mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15 #include <mono/utils/mono-compiler.h>
  16
  17 #ifndef DISABLE_JIT
  18
  19 #include <signal.h>
  20
  21 #ifdef HAVE_UNISTD_H
  22 #include <unistd.h>
  23 #endif
  24
  25 #include <math.h>
  26 #include <string.h>
  27 #include <ctype.h>
  28
  29 #ifdef HAVE_SYS_TIME_H
  30 #include <sys/time.h>
  31 #endif
  32
  33 #ifdef HAVE_ALLOCA_H
  34 #include <alloca.h>
  35 #endif
  36
  37 #include <mono/utils/memcheck.h>
  38 #include "mini.h"
  39 #include <mono/metadata/abi-details.h>
  40 #include <mono/metadata/assembly.h>
  41 #include <mono/metadata/attrdefs.h>
  42 #include <mono/metadata/loader.h>
  43 #include <mono/metadata/tabledefs.h>
  44 #include <mono/metadata/class.h>
  45 #include <mono/metadata/object.h>
  46 #include <mono/metadata/exception.h>
  47 #include <mono/metadata/opcodes.h>
  48 #include <mono/metadata/mono-endian.h>
  49 #include <mono/metadata/tokentype.h>
  50 #include <mono/metadata/tabledefs.h>
  51 #include <mono/metadata/marshal.h>
  52 #include <mono/metadata/debug-helpers.h>
  53 #include <mono/metadata/mono-debug.h>
  54 #include <mono/metadata/mono-debug-debugger.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/metadata/debug-mono-symfile.h>
  63 #include <mono/utils/mono-compiler.h>
  64 #include <mono/utils/mono-memory-model.h>
  65 #include <mono/utils/mono-error-internals.h>
  66 #include <mono/metadata/mono-basic-block.h>
  67 #include <mono/metadata/reflection-internals.h>
  68 #include <mono/utils/mono-threads-coop.h>
  69
  70 #include "trace.h"
  71
  72 #include "ir-emit.h"
  73
  74 #include "jit-icalls.h"
  75 #include "jit.h"
  76 #include "debugger-agent.h"
  77 #include "seq-points.h"
  78 #include "aot-compiler.h"
  79 #include "mini-llvm.h"
  80
  81 #define BRANCH_COST 10
  82 #define INLINE_LENGTH_LIMIT 20
  83
  84 /* These have 'cfg' as an implicit argument */
  85 #define INLINE_FAILURE(msg) do {                                                                        \
  86         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  87                 inline_failure (cfg, msg);                                                                              \
  88                 goto exception_exit;                                                                                    \
  89         } \
  90         } while (0)
  91 #define CHECK_CFG_EXCEPTION do {\
  92                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  93                         goto exception_exit;                                            \
  94         } while (0)
  95 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  96                 field_access_failure ((cfg), (method), (field));                        \
  97                 goto exception_exit;    \
  98         } while (0)
  99 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 100                 if (cfg->gshared) {                                                                     \
 101                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 102                         goto exception_exit;    \
 103                 }                       \
 104         } while (0)
 105 #define GSHAREDVT_FAILURE(opcode) do {          \
 106         if (cfg->gsharedvt) {                                                                                           \
 107                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 108                 goto exception_exit;                                                                                    \
 109         }                                                                                                                                       \
 110         } while (0)
 111 #define OUT_OF_MEMORY_FAILURE do {      \
 112                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 113                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 114                 goto exception_exit;    \
 115         } while (0)
 116 #define DISABLE_AOT(cfg) do { \
 117                 if ((cfg)->verbose_level >= 2)                                            \
 118                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 119                 (cfg)->disable_aot = TRUE;                                                        \
 120         } while (0)
 121 #define LOAD_ERROR do { \
 122                 break_on_unverified ();                                                         \
 123                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 124                 goto exception_exit;                                                                    \
 125         } while (0)
 126
 127 #define TYPE_LOAD_ERROR(klass) do { \
 128                 cfg->exception_ptr = klass; \
 129                 LOAD_ERROR;                                     \
 130         } while (0)
 131
 132 #define CHECK_CFG_ERROR do {\
 133                 if (!mono_error_ok (&cfg->error)) { \
 134                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 135                         goto mono_error_exit; \
 136                 } \
 137         } while (0)
 138
 139 /* Determine whenever 'ins' represents a load of the 'this' argument */
 140 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 141
 142 static int ldind_to_load_membase (int opcode);
 143 static int stind_to_store_membase (int opcode);
 144
 145 int mono_op_to_op_imm (int opcode);
 146 int mono_op_to_op_imm_noemul (int opcode);
 147
 148 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 149
 150 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 151                                                   guchar *ip, guint real_offset, gboolean inline_always);
 152 static MonoInst*
 153 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 154
 155 /* helper methods signatures */
 156 static MonoMethodSignature *helper_sig_domain_get;
 157 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 158 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 159
 160 /* type loading helpers */
 161 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 162 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 163
 164 /*
 165  * Instruction metadata
 166  */
 167 #ifdef MINI_OP
 168 #undef MINI_OP
 169 #endif
 170 #ifdef MINI_OP3
 171 #undef MINI_OP3
 172 #endif
 173 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 174 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 175 #define NONE ' '
 176 #define IREG 'i'
 177 #define FREG 'f'
 178 #define VREG 'v'
 179 #define XREG 'x'
 180 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 181 #define LREG IREG
 182 #else
 183 #define LREG 'l'
 184 #endif
 185 /* keep in sync with the enum in mini.h */
 186 const char
 187 ins_info[] = {
 188 #include "mini-ops.h"
 189 };
 190 #undef MINI_OP
 191 #undef MINI_OP3
 192
 193 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 194 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 195 /*
 196  * This should contain the index of the last sreg + 1. This is not the same
 197  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 198  */
 199 const gint8 ins_sreg_counts[] = {
 200 #include "mini-ops.h"
 201 };
 202 #undef MINI_OP
 203 #undef MINI_OP3
 204
 205 #define MONO_INIT_VARINFO(vi,id) do { \
 206         (vi)->range.first_use.pos.bid = 0xffff; \
 207         (vi)->reg = -1; \
 208         (vi)->idx = (id); \
 209 } while (0)
 210
 211 guint32
 212 mono_alloc_ireg (MonoCompile *cfg)
 213 {
 214         return alloc_ireg (cfg);
 215 }
 216
 217 guint32
 218 mono_alloc_lreg (MonoCompile *cfg)
 219 {
 220         return alloc_lreg (cfg);
 221 }
 222
 223 guint32
 224 mono_alloc_freg (MonoCompile *cfg)
 225 {
 226         return alloc_freg (cfg);
 227 }
 228
 229 guint32
 230 mono_alloc_preg (MonoCompile *cfg)
 231 {
 232         return alloc_preg (cfg);
 233 }
 234
 235 guint32
 236 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 237 {
 238         return alloc_dreg (cfg, stack_type);
 239 }
 240
 241 /*
 242  * mono_alloc_ireg_ref:
 243  *
 244  *   Allocate an IREG, and mark it as holding a GC ref.
 245  */
 246 guint32
 247 mono_alloc_ireg_ref (MonoCompile *cfg)
 248 {
 249         return alloc_ireg_ref (cfg);
 250 }
 251
 252 /*
 253  * mono_alloc_ireg_mp:
 254  *
 255  *   Allocate an IREG, and mark it as holding a managed pointer.
 256  */
 257 guint32
 258 mono_alloc_ireg_mp (MonoCompile *cfg)
 259 {
 260         return alloc_ireg_mp (cfg);
 261 }
 262
 263 /*
 264  * mono_alloc_ireg_copy:
 265  *
 266  *   Allocate an IREG with the same GC type as VREG.
 267  */
 268 guint32
 269 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 270 {
 271         if (vreg_is_ref (cfg, vreg))
 272                 return alloc_ireg_ref (cfg);
 273         else if (vreg_is_mp (cfg, vreg))
 274                 return alloc_ireg_mp (cfg);
 275         else
 276                 return alloc_ireg (cfg);
 277 }
 278
 279 guint
 280 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 281 {
 282         if (type->byref)
 283                 return OP_MOVE;
 284
 285         type = mini_get_underlying_type (type);
 286 handle_enum:
 287         switch (type->type) {
 288         case MONO_TYPE_I1:
 289         case MONO_TYPE_U1:
 290                 return OP_MOVE;
 291         case MONO_TYPE_I2:
 292         case MONO_TYPE_U2:
 293                 return OP_MOVE;
 294         case MONO_TYPE_I4:
 295         case MONO_TYPE_U4:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I:
 298         case MONO_TYPE_U:
 299         case MONO_TYPE_PTR:
 300         case MONO_TYPE_FNPTR:
 301                 return OP_MOVE;
 302         case MONO_TYPE_CLASS:
 303         case MONO_TYPE_STRING:
 304         case MONO_TYPE_OBJECT:
 305         case MONO_TYPE_SZARRAY:
 306         case MONO_TYPE_ARRAY:
 307                 return OP_MOVE;
 308         case MONO_TYPE_I8:
 309         case MONO_TYPE_U8:
 310 #if SIZEOF_REGISTER == 8
 311                 return OP_MOVE;
 312 #else
 313                 return OP_LMOVE;
 314 #endif
 315         case MONO_TYPE_R4:
 316                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 317         case MONO_TYPE_R8:
 318                 return OP_FMOVE;
 319         case MONO_TYPE_VALUETYPE:
 320                 if (type->data.klass->enumtype) {
 321                         type = mono_class_enum_basetype (type->data.klass);
 322                         goto handle_enum;
 323                 }
 324                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 325                         return OP_XMOVE;
 326                 return OP_VMOVE;
 327         case MONO_TYPE_TYPEDBYREF:
 328                 return OP_VMOVE;
 329         case MONO_TYPE_GENERICINST:
 330                 type = &type->data.generic_class->container_class->byval_arg;
 331                 goto handle_enum;
 332         case MONO_TYPE_VAR:
 333         case MONO_TYPE_MVAR:
 334                 g_assert (cfg->gshared);
 335                 if (mini_type_var_is_vt (type))
 336                         return OP_VMOVE;
 337                 else
 338                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 339         default:
 340                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 341         }
 342         return -1;
 343 }
 344
 345 void
 346 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 347 {
 348         int i;
 349         MonoInst *tree;
 350
 351         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 352         for (i = 0; i < bb->in_count; ++i)
 353                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 354         printf (", OUT: ");
 355         for (i = 0; i < bb->out_count; ++i)
 356                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 357         printf (" ]\n");
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368 }
 369
 370 static MONO_NEVER_INLINE void
 371 break_on_unverified (void)
 372 {
 373         if (mini_get_debug_options ()->break_on_unverified)
 374                 G_BREAKPOINT ();
 375 }
 376
 377 static MONO_NEVER_INLINE void
 378 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 379 {
 380         char *method_fname = mono_method_full_name (method, TRUE);
 381         char *field_fname = mono_field_full_name (field);
 382         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 383         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 384         g_free (method_fname);
 385         g_free (field_fname);
 386 }
 387
 388 static MONO_NEVER_INLINE void
 389 inline_failure (MonoCompile *cfg, const char *msg)
 390 {
 391         if (cfg->verbose_level >= 2)
 392                 printf ("inline failed: %s\n", msg);
 393         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 394 }
 395
 396 static MONO_NEVER_INLINE void
 397 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 398 {
 399         if (cfg->verbose_level > 2)                                                                                     \
 400                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 401         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 402 }
 403
 404 static MONO_NEVER_INLINE void
 405 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 406 {
 407         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 408         if (cfg->verbose_level >= 2)
 409                 printf ("%s\n", cfg->exception_message);
 410         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 411 }
 412
 413 /*
 414  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 415  * foo<T> (int i) { ldarg.0; box T; }
 416  */
 417 #define UNVERIFIED do { \
 418         if (cfg->gsharedvt) { \
 419                 if (cfg->verbose_level > 2)                                                                     \
 420                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 421                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 422                 goto exception_exit;                                                                                    \
 423         }                                                                                                                                       \
 424         break_on_unverified ();                                                                                         \
 425         goto unverified;                                                                                                        \
 426 } while (0)
 427
 428 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 429                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 430                 if (!(tblock)) {        \
 431                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 432             NEW_BBLOCK (cfg, (tblock)); \
 433                         (tblock)->cil_code = (ip);      \
 434                         ADD_BBLOCK (cfg, (tblock));     \
 435                 } \
 436         } while (0)
 437
 438 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 439 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 440                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 441                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 442                 (dest)->sreg1 = (sr1); \
 443                 (dest)->sreg2 = (sr2); \
 444                 (dest)->inst_imm = (imm); \
 445                 (dest)->backend.shift_amount = (shift); \
 446                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 447         } while (0)
 448 #endif
 449
 450 /* Emit conversions so both operands of a binary opcode are of the same type */
 451 static void
 452 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 453 {
 454         MonoInst *arg1 = *arg1_ref;
 455         MonoInst *arg2 = *arg2_ref;
 456
 457         if (cfg->r4fp &&
 458                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 459                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 460                 MonoInst *conv;
 461
 462                 /* Mixing r4/r8 is allowed by the spec */
 463                 if (arg1->type == STACK_R4) {
 464                         int dreg = alloc_freg (cfg);
 465
 466                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 467                         conv->type = STACK_R8;
 468                         ins->sreg1 = dreg;
 469                         *arg1_ref = conv;
 470                 }
 471                 if (arg2->type == STACK_R4) {
 472                         int dreg = alloc_freg (cfg);
 473
 474                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 475                         conv->type = STACK_R8;
 476                         ins->sreg2 = dreg;
 477                         *arg2_ref = conv;
 478                 }
 479         }
 480
 481 #if SIZEOF_REGISTER == 8
 482         /* FIXME: Need to add many more cases */
 483         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 484                 MonoInst *widen;
 485
 486                 int dr = alloc_preg (cfg);
 487                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 488                 (ins)->sreg2 = widen->dreg;
 489         }
 490 #endif
 491 }
 492
 493 #define ADD_BINOP(op) do {      \
 494                 MONO_INST_NEW (cfg, ins, (op)); \
 495                 sp -= 2;        \
 496                 ins->sreg1 = sp [0]->dreg;      \
 497                 ins->sreg2 = sp [1]->dreg;      \
 498                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 499                 CHECK_TYPE (ins);       \
 500                 /* Have to insert a widening op */               \
 501         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 502         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 503         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 504         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 505         } while (0)
 506
 507 #define ADD_UNOP(op) do {       \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp--;   \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 type_from_op (cfg, ins, sp [0], NULL);  \
 512                 CHECK_TYPE (ins);       \
 513         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 514         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 515                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 516         } while (0)
 517
 518 #define ADD_BINCOND(next_block) do {    \
 519                 MonoInst *cmp;  \
 520                 sp -= 2; \
 521                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 522                 cmp->sreg1 = sp [0]->dreg;      \
 523                 cmp->sreg2 = sp [1]->dreg;      \
 524                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 525                 CHECK_TYPE (cmp);       \
 526                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 527                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 528                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 529                 GET_BBLOCK (cfg, tblock, target);               \
 530                 link_bblock (cfg, cfg->cbb, tblock);    \
 531                 ins->inst_true_bb = tblock;     \
 532                 if ((next_block)) {     \
 533                         link_bblock (cfg, cfg->cbb, (next_block));      \
 534                         ins->inst_false_bb = (next_block);      \
 535                         start_new_bblock = 1;   \
 536                 } else {        \
 537                         GET_BBLOCK (cfg, tblock, ip);           \
 538                         link_bblock (cfg, cfg->cbb, tblock);    \
 539                         ins->inst_false_bb = tblock;    \
 540                         start_new_bblock = 2;   \
 541                 }       \
 542                 if (sp != stack_start) {                                                                        \
 543                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 544                         CHECK_UNVERIFIABLE (cfg); \
 545                 } \
 546         MONO_ADD_INS (cfg->cbb, cmp); \
 547                 MONO_ADD_INS (cfg->cbb, ins);   \
 548         } while (0)
 549
 550 /* *
 551  * link_bblock: Links two basic blocks
 552  *
 553  * links two basic blocks in the control flow graph, the 'from'
 554  * argument is the starting block and the 'to' argument is the block
 555  * the control flow ends to after 'from'.
 556  */
 557 static void
 558 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 559 {
 560         MonoBasicBlock **newa;
 561         int i, found;
 562
 563 #if 0
 564         if (from->cil_code) {
 565                 if (to->cil_code)
 566                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 567                 else
 568                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 569         } else {
 570                 if (to->cil_code)
 571                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 572                 else
 573                         printf ("edge from entry to exit\n");
 574         }
 575 #endif
 576
 577         found = FALSE;
 578         for (i = 0; i < from->out_count; ++i) {
 579                 if (to == from->out_bb [i]) {
 580                         found = TRUE;
 581                         break;
 582                 }
 583         }
 584         if (!found) {
 585                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 586                 for (i = 0; i < from->out_count; ++i) {
 587                         newa [i] = from->out_bb [i];
 588                 }
 589                 newa [i] = to;
 590                 from->out_count++;
 591                 from->out_bb = newa;
 592         }
 593
 594         found = FALSE;
 595         for (i = 0; i < to->in_count; ++i) {
 596                 if (from == to->in_bb [i]) {
 597                         found = TRUE;
 598                         break;
 599                 }
 600         }
 601         if (!found) {
 602                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 603                 for (i = 0; i < to->in_count; ++i) {
 604                         newa [i] = to->in_bb [i];
 605                 }
 606                 newa [i] = from;
 607                 to->in_count++;
 608                 to->in_bb = newa;
 609         }
 610 }
 611
 612 void
 613 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 614 {
 615         link_bblock (cfg, from, to);
 616 }
 617
 618 /**
 619  * mono_find_block_region:
 620  *
 621  *   We mark each basic block with a region ID. We use that to avoid BB
 622  *   optimizations when blocks are in different regions.
 623  *
 624  * Returns:
 625  *   A region token that encodes where this region is, and information
 626  *   about the clause owner for this block.
 627  *
 628  *   The region encodes the try/catch/filter clause that owns this block
 629  *   as well as the type.  -1 is a special value that represents a block
 630  *   that is in none of try/catch/filter.
 631  */
 632 static int
 633 mono_find_block_region (MonoCompile *cfg, int offset)
 634 {
 635         MonoMethodHeader *header = cfg->header;
 636         MonoExceptionClause *clause;
 637         int i;
 638
 639         for (i = 0; i < header->num_clauses; ++i) {
 640                 clause = &header->clauses [i];
 641                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 642                     (offset < (clause->handler_offset)))
 643                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 644
 645                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 646                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 647                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 648                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 649                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 650                         else
 651                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 652                 }
 653         }
 654         for (i = 0; i < header->num_clauses; ++i) {
 655                 clause = &header->clauses [i];
 656
 657                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 658                         return ((i + 1) << 8) | clause->flags;
 659         }
 660
 661         return -1;
 662 }
 663
 664 static gboolean
 665 ip_in_finally_clause (MonoCompile *cfg, int offset)
 666 {
 667         MonoMethodHeader *header = cfg->header;
 668         MonoExceptionClause *clause;
 669         int i;
 670
 671         for (i = 0; i < header->num_clauses; ++i) {
 672                 clause = &header->clauses [i];
 673                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 674                         continue;
 675
 676                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 677                         return TRUE;
 678         }
 679         return FALSE;
 680 }
 681
 682 static GList*
 683 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 684 {
 685         MonoMethodHeader *header = cfg->header;
 686         MonoExceptionClause *clause;
 687         int i;
 688         GList *res = NULL;
 689
 690         for (i = 0; i < header->num_clauses; ++i) {
 691                 clause = &header->clauses [i];
 692                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 693                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 694                         if (clause->flags == type)
 695                                 res = g_list_append (res, clause);
 696                 }
 697         }
 698         return res;
 699 }
 700
 701 static void
 702 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 703 {
 704         MonoInst *var;
 705
 706         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 707         if (var)
 708                 return;
 709
 710         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 711         /* prevent it from being register allocated */
 712         var->flags |= MONO_INST_VOLATILE;
 713
 714         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 715 }
 716
 717 MonoInst *
 718 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 719 {
 720         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 721 }
 722
 723 static MonoInst*
 724 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 725 {
 726         MonoInst *var;
 727
 728         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 729         if (var)
 730                 return var;
 731
 732         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 733         /* prevent it from being register allocated */
 734         var->flags |= MONO_INST_VOLATILE;
 735
 736         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 737
 738         return var;
 739 }
 740
 741 /*
 742  * Returns the type used in the eval stack when @type is loaded.
 743  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 744  */
 745 void
 746 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 747 {
 748         MonoClass *klass;
 749
 750         type = mini_get_underlying_type (type);
 751         inst->klass = klass = mono_class_from_mono_type (type);
 752         if (type->byref) {
 753                 inst->type = STACK_MP;
 754                 return;
 755         }
 756
 757 handle_enum:
 758         switch (type->type) {
 759         case MONO_TYPE_VOID:
 760                 inst->type = STACK_INV;
 761                 return;
 762         case MONO_TYPE_I1:
 763         case MONO_TYPE_U1:
 764         case MONO_TYPE_I2:
 765         case MONO_TYPE_U2:
 766         case MONO_TYPE_I4:
 767         case MONO_TYPE_U4:
 768                 inst->type = STACK_I4;
 769                 return;
 770         case MONO_TYPE_I:
 771         case MONO_TYPE_U:
 772         case MONO_TYPE_PTR:
 773         case MONO_TYPE_FNPTR:
 774                 inst->type = STACK_PTR;
 775                 return;
 776         case MONO_TYPE_CLASS:
 777         case MONO_TYPE_STRING:
 778         case MONO_TYPE_OBJECT:
 779         case MONO_TYPE_SZARRAY:
 780         case MONO_TYPE_ARRAY:
 781                 inst->type = STACK_OBJ;
 782                 return;
 783         case MONO_TYPE_I8:
 784         case MONO_TYPE_U8:
 785                 inst->type = STACK_I8;
 786                 return;
 787         case MONO_TYPE_R4:
 788                 inst->type = cfg->r4_stack_type;
 789                 break;
 790         case MONO_TYPE_R8:
 791                 inst->type = STACK_R8;
 792                 return;
 793         case MONO_TYPE_VALUETYPE:
 794                 if (type->data.klass->enumtype) {
 795                         type = mono_class_enum_basetype (type->data.klass);
 796                         goto handle_enum;
 797                 } else {
 798                         inst->klass = klass;
 799                         inst->type = STACK_VTYPE;
 800                         return;
 801                 }
 802         case MONO_TYPE_TYPEDBYREF:
 803                 inst->klass = mono_defaults.typed_reference_class;
 804                 inst->type = STACK_VTYPE;
 805                 return;
 806         case MONO_TYPE_GENERICINST:
 807                 type = &type->data.generic_class->container_class->byval_arg;
 808                 goto handle_enum;
 809         case MONO_TYPE_VAR:
 810         case MONO_TYPE_MVAR:
 811                 g_assert (cfg->gshared);
 812                 if (mini_is_gsharedvt_type (type)) {
 813                         g_assert (cfg->gsharedvt);
 814                         inst->type = STACK_VTYPE;
 815                 } else {
 816                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 817                 }
 818                 return;
 819         default:
 820                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 821         }
 822 }
 823
 824 /*
 825  * The following tables are used to quickly validate the IL code in type_from_op ().
 826  */
 827 static const char
 828 bin_num_table [STACK_MAX] [STACK_MAX] = {
 829         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 830         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 834         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 837         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 838 };
 839
 840 static const char
 841 neg_table [] = {
 842         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 843 };
 844
 845 /* reduce the size of this table */
 846 static const char
 847 bin_int_table [STACK_MAX] [STACK_MAX] = {
 848         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 849         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 850         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 851         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 856 };
 857
 858 static const char
 859 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 860 /*      Inv i  L  p  F  &  O  vt r4 */
 861         {0},
 862         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 863         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 864         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 865         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 866         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 867         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 868         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 869         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 870 };
 871
 872 /* reduce the size of this table */
 873 static const char
 874 shift_table [STACK_MAX] [STACK_MAX] = {
 875         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 876         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 877         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 878         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 883 };
 884
 885 /*
 886  * Tables to map from the non-specific opcode to the matching
 887  * type-specific opcode.
 888  */
 889 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 890 static const guint16
 891 binops_op_map [STACK_MAX] = {
 892         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 893 };
 894
 895 /* handles from CEE_NEG to CEE_CONV_U8 */
 896 static const guint16
 897 unops_op_map [STACK_MAX] = {
 898         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 899 };
 900
 901 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 902 static const guint16
 903 ovfops_op_map [STACK_MAX] = {
 904         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 905 };
 906
 907 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 908 static const guint16
 909 ovf2ops_op_map [STACK_MAX] = {
 910         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 911 };
 912
 913 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 914 static const guint16
 915 ovf3ops_op_map [STACK_MAX] = {
 916         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 917 };
 918
 919 /* handles from CEE_BEQ to CEE_BLT_UN */
 920 static const guint16
 921 beqops_op_map [STACK_MAX] = {
 922         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 923 };
 924
 925 /* handles from CEE_CEQ to CEE_CLT_UN */
 926 static const guint16
 927 ceqops_op_map [STACK_MAX] = {
 928         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 929 };
 930
 931 /*
 932  * Sets ins->type (the type on the eval stack) according to the
 933  * type of the opcode and the arguments to it.
 934  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 935  *
 936  * FIXME: this function sets ins->type unconditionally in some cases, but
 937  * it should set it to invalid for some types (a conv.x on an object)
 938  */
 939 static void
 940 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 941 {
 942         switch (ins->opcode) {
 943         /* binops */
 944         case CEE_ADD:
 945         case CEE_SUB:
 946         case CEE_MUL:
 947         case CEE_DIV:
 948         case CEE_REM:
 949                 /* FIXME: check unverifiable args for STACK_MP */
 950                 ins->type = bin_num_table [src1->type] [src2->type];
 951                 ins->opcode += binops_op_map [ins->type];
 952                 break;
 953         case CEE_DIV_UN:
 954         case CEE_REM_UN:
 955         case CEE_AND:
 956         case CEE_OR:
 957         case CEE_XOR:
 958                 ins->type = bin_int_table [src1->type] [src2->type];
 959                 ins->opcode += binops_op_map [ins->type];
 960                 break;
 961         case CEE_SHL:
 962         case CEE_SHR:
 963         case CEE_SHR_UN:
 964                 ins->type = shift_table [src1->type] [src2->type];
 965                 ins->opcode += binops_op_map [ins->type];
 966                 break;
 967         case OP_COMPARE:
 968         case OP_LCOMPARE:
 969         case OP_ICOMPARE:
 970                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 971                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 972                         ins->opcode = OP_LCOMPARE;
 973                 else if (src1->type == STACK_R4)
 974                         ins->opcode = OP_RCOMPARE;
 975                 else if (src1->type == STACK_R8)
 976                         ins->opcode = OP_FCOMPARE;
 977                 else
 978                         ins->opcode = OP_ICOMPARE;
 979                 break;
 980         case OP_ICOMPARE_IMM:
 981                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 982                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 983                         ins->opcode = OP_LCOMPARE_IMM;
 984                 break;
 985         case CEE_BEQ:
 986         case CEE_BGE:
 987         case CEE_BGT:
 988         case CEE_BLE:
 989         case CEE_BLT:
 990         case CEE_BNE_UN:
 991         case CEE_BGE_UN:
 992         case CEE_BGT_UN:
 993         case CEE_BLE_UN:
 994         case CEE_BLT_UN:
 995                 ins->opcode += beqops_op_map [src1->type];
 996                 break;
 997         case OP_CEQ:
 998                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 999                 ins->opcode += ceqops_op_map [src1->type];
1000                 break;
1001         case OP_CGT:
1002         case OP_CGT_UN:
1003         case OP_CLT:
1004         case OP_CLT_UN:
1005                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1006                 ins->opcode += ceqops_op_map [src1->type];
1007                 break;
1008         /* unops */
1009         case CEE_NEG:
1010                 ins->type = neg_table [src1->type];
1011                 ins->opcode += unops_op_map [ins->type];
1012                 break;
1013         case CEE_NOT:
1014                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1015                         ins->type = src1->type;
1016                 else
1017                         ins->type = STACK_INV;
1018                 ins->opcode += unops_op_map [ins->type];
1019                 break;
1020         case CEE_CONV_I1:
1021         case CEE_CONV_I2:
1022         case CEE_CONV_I4:
1023         case CEE_CONV_U4:
1024                 ins->type = STACK_I4;
1025                 ins->opcode += unops_op_map [src1->type];
1026                 break;
1027         case CEE_CONV_R_UN:
1028                 ins->type = STACK_R8;
1029                 switch (src1->type) {
1030                 case STACK_I4:
1031                 case STACK_PTR:
1032                         ins->opcode = OP_ICONV_TO_R_UN;
1033                         break;
1034                 case STACK_I8:
1035                         ins->opcode = OP_LCONV_TO_R_UN;
1036                         break;
1037                 }
1038                 break;
1039         case CEE_CONV_OVF_I1:
1040         case CEE_CONV_OVF_U1:
1041         case CEE_CONV_OVF_I2:
1042         case CEE_CONV_OVF_U2:
1043         case CEE_CONV_OVF_I4:
1044         case CEE_CONV_OVF_U4:
1045                 ins->type = STACK_I4;
1046                 ins->opcode += ovf3ops_op_map [src1->type];
1047                 break;
1048         case CEE_CONV_OVF_I_UN:
1049         case CEE_CONV_OVF_U_UN:
1050                 ins->type = STACK_PTR;
1051                 ins->opcode += ovf2ops_op_map [src1->type];
1052                 break;
1053         case CEE_CONV_OVF_I1_UN:
1054         case CEE_CONV_OVF_I2_UN:
1055         case CEE_CONV_OVF_I4_UN:
1056         case CEE_CONV_OVF_U1_UN:
1057         case CEE_CONV_OVF_U2_UN:
1058         case CEE_CONV_OVF_U4_UN:
1059                 ins->type = STACK_I4;
1060                 ins->opcode += ovf2ops_op_map [src1->type];
1061                 break;
1062         case CEE_CONV_U:
1063                 ins->type = STACK_PTR;
1064                 switch (src1->type) {
1065                 case STACK_I4:
1066                         ins->opcode = OP_ICONV_TO_U;
1067                         break;
1068                 case STACK_PTR:
1069                 case STACK_MP:
1070 #if SIZEOF_VOID_P == 8
1071                         ins->opcode = OP_LCONV_TO_U;
1072 #else
1073                         ins->opcode = OP_MOVE;
1074 #endif
1075                         break;
1076                 case STACK_I8:
1077                         ins->opcode = OP_LCONV_TO_U;
1078                         break;
1079                 case STACK_R8:
1080                         ins->opcode = OP_FCONV_TO_U;
1081                         break;
1082                 }
1083                 break;
1084         case CEE_CONV_I8:
1085         case CEE_CONV_U8:
1086                 ins->type = STACK_I8;
1087                 ins->opcode += unops_op_map [src1->type];
1088                 break;
1089         case CEE_CONV_OVF_I8:
1090         case CEE_CONV_OVF_U8:
1091                 ins->type = STACK_I8;
1092                 ins->opcode += ovf3ops_op_map [src1->type];
1093                 break;
1094         case CEE_CONV_OVF_U8_UN:
1095         case CEE_CONV_OVF_I8_UN:
1096                 ins->type = STACK_I8;
1097                 ins->opcode += ovf2ops_op_map [src1->type];
1098                 break;
1099         case CEE_CONV_R4:
1100                 ins->type = cfg->r4_stack_type;
1101                 ins->opcode += unops_op_map [src1->type];
1102                 break;
1103         case CEE_CONV_R8:
1104                 ins->type = STACK_R8;
1105                 ins->opcode += unops_op_map [src1->type];
1106                 break;
1107         case OP_CKFINITE:
1108                 ins->type = STACK_R8;
1109                 break;
1110         case CEE_CONV_U2:
1111         case CEE_CONV_U1:
1112                 ins->type = STACK_I4;
1113                 ins->opcode += ovfops_op_map [src1->type];
1114                 break;
1115         case CEE_CONV_I:
1116         case CEE_CONV_OVF_I:
1117         case CEE_CONV_OVF_U:
1118                 ins->type = STACK_PTR;
1119                 ins->opcode += ovfops_op_map [src1->type];
1120                 break;
1121         case CEE_ADD_OVF:
1122         case CEE_ADD_OVF_UN:
1123         case CEE_MUL_OVF:
1124         case CEE_MUL_OVF_UN:
1125         case CEE_SUB_OVF:
1126         case CEE_SUB_OVF_UN:
1127                 ins->type = bin_num_table [src1->type] [src2->type];
1128                 ins->opcode += ovfops_op_map [src1->type];
1129                 if (ins->type == STACK_R8)
1130                         ins->type = STACK_INV;
1131                 break;
1132         case OP_LOAD_MEMBASE:
1133                 ins->type = STACK_PTR;
1134                 break;
1135         case OP_LOADI1_MEMBASE:
1136         case OP_LOADU1_MEMBASE:
1137         case OP_LOADI2_MEMBASE:
1138         case OP_LOADU2_MEMBASE:
1139         case OP_LOADI4_MEMBASE:
1140         case OP_LOADU4_MEMBASE:
1141                 ins->type = STACK_PTR;
1142                 break;
1143         case OP_LOADI8_MEMBASE:
1144                 ins->type = STACK_I8;
1145                 break;
1146         case OP_LOADR4_MEMBASE:
1147                 ins->type = cfg->r4_stack_type;
1148                 break;
1149         case OP_LOADR8_MEMBASE:
1150                 ins->type = STACK_R8;
1151                 break;
1152         default:
1153                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1154                 break;
1155         }
1156
1157         if (ins->type == STACK_MP)
1158                 ins->klass = mono_defaults.object_class;
1159 }
1160
1161 static const char
1162 ldind_type [] = {
1163         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1164 };
1165
1166 #if 0
1167
1168 static const char
1169 param_table [STACK_MAX] [STACK_MAX] = {
1170         {0},
1171 };
1172
1173 static int
1174 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1175 {
1176         int i;
1177
1178         if (sig->hasthis) {
1179                 switch (args->type) {
1180                 case STACK_I4:
1181                 case STACK_I8:
1182                 case STACK_R8:
1183                 case STACK_VTYPE:
1184                 case STACK_INV:
1185                         return 0;
1186                 }
1187                 args++;
1188         }
1189         for (i = 0; i < sig->param_count; ++i) {
1190                 switch (args [i].type) {
1191                 case STACK_INV:
1192                         return 0;
1193                 case STACK_MP:
1194                         if (!sig->params [i]->byref)
1195                                 return 0;
1196                         continue;
1197                 case STACK_OBJ:
1198                         if (sig->params [i]->byref)
1199                                 return 0;
1200                         switch (sig->params [i]->type) {
1201                         case MONO_TYPE_CLASS:
1202                         case MONO_TYPE_STRING:
1203                         case MONO_TYPE_OBJECT:
1204                         case MONO_TYPE_SZARRAY:
1205                         case MONO_TYPE_ARRAY:
1206                                 break;
1207                         default:
1208                                 return 0;
1209                         }
1210                         continue;
1211                 case STACK_R8:
1212                         if (sig->params [i]->byref)
1213                                 return 0;
1214                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1215                                 return 0;
1216                         continue;
1217                 case STACK_PTR:
1218                 case STACK_I4:
1219                 case STACK_I8:
1220                 case STACK_VTYPE:
1221                         break;
1222                 }
1223                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1224                         return 0;*/
1225         }
1226         return 1;
1227 }
1228 #endif
1229
1230 /*
1231  * When we need a pointer to the current domain many times in a method, we
1232  * call mono_domain_get() once and we store the result in a local variable.
1233  * This function returns the variable that represents the MonoDomain*.
1234  */
1235 inline static MonoInst *
1236 mono_get_domainvar (MonoCompile *cfg)
1237 {
1238         if (!cfg->domainvar)
1239                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1240         return cfg->domainvar;
1241 }
1242
1243 /*
1244  * The got_var contains the address of the Global Offset Table when AOT
1245  * compiling.
1246  */
1247 MonoInst *
1248 mono_get_got_var (MonoCompile *cfg)
1249 {
1250         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1251                 return NULL;
1252         if (!cfg->got_var) {
1253                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1254         }
1255         return cfg->got_var;
1256 }
1257
1258 static MonoInst *
1259 mono_get_vtable_var (MonoCompile *cfg)
1260 {
1261         g_assert (cfg->gshared);
1262
1263         if (!cfg->rgctx_var) {
1264                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1265                 /* force the var to be stack allocated */
1266                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1267         }
1268
1269         return cfg->rgctx_var;
1270 }
1271
1272 static MonoType*
1273 type_from_stack_type (MonoInst *ins) {
1274         switch (ins->type) {
1275         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1276         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1277         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1278         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1279         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1280         case STACK_MP:
1281                 return &ins->klass->this_arg;
1282         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1283         case STACK_VTYPE: return &ins->klass->byval_arg;
1284         default:
1285                 g_error ("stack type %d to monotype not handled\n", ins->type);
1286         }
1287         return NULL;
1288 }
1289
1290 static G_GNUC_UNUSED int
1291 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1292 {
1293         t = mono_type_get_underlying_type (t);
1294         switch (t->type) {
1295         case MONO_TYPE_I1:
1296         case MONO_TYPE_U1:
1297         case MONO_TYPE_I2:
1298         case MONO_TYPE_U2:
1299         case MONO_TYPE_I4:
1300         case MONO_TYPE_U4:
1301                 return STACK_I4;
1302         case MONO_TYPE_I:
1303         case MONO_TYPE_U:
1304         case MONO_TYPE_PTR:
1305         case MONO_TYPE_FNPTR:
1306                 return STACK_PTR;
1307         case MONO_TYPE_CLASS:
1308         case MONO_TYPE_STRING:
1309         case MONO_TYPE_OBJECT:
1310         case MONO_TYPE_SZARRAY:
1311         case MONO_TYPE_ARRAY:
1312                 return STACK_OBJ;
1313         case MONO_TYPE_I8:
1314         case MONO_TYPE_U8:
1315                 return STACK_I8;
1316         case MONO_TYPE_R4:
1317                 return cfg->r4_stack_type;
1318         case MONO_TYPE_R8:
1319                 return STACK_R8;
1320         case MONO_TYPE_VALUETYPE:
1321         case MONO_TYPE_TYPEDBYREF:
1322                 return STACK_VTYPE;
1323         case MONO_TYPE_GENERICINST:
1324                 if (mono_type_generic_inst_is_valuetype (t))
1325                         return STACK_VTYPE;
1326                 else
1327                         return STACK_OBJ;
1328                 break;
1329         default:
1330                 g_assert_not_reached ();
1331         }
1332
1333         return -1;
1334 }
1335
1336 static MonoClass*
1337 array_access_to_klass (int opcode)
1338 {
1339         switch (opcode) {
1340         case CEE_LDELEM_U1:
1341                 return mono_defaults.byte_class;
1342         case CEE_LDELEM_U2:
1343                 return mono_defaults.uint16_class;
1344         case CEE_LDELEM_I:
1345         case CEE_STELEM_I:
1346                 return mono_defaults.int_class;
1347         case CEE_LDELEM_I1:
1348         case CEE_STELEM_I1:
1349                 return mono_defaults.sbyte_class;
1350         case CEE_LDELEM_I2:
1351         case CEE_STELEM_I2:
1352                 return mono_defaults.int16_class;
1353         case CEE_LDELEM_I4:
1354         case CEE_STELEM_I4:
1355                 return mono_defaults.int32_class;
1356         case CEE_LDELEM_U4:
1357                 return mono_defaults.uint32_class;
1358         case CEE_LDELEM_I8:
1359         case CEE_STELEM_I8:
1360                 return mono_defaults.int64_class;
1361         case CEE_LDELEM_R4:
1362         case CEE_STELEM_R4:
1363                 return mono_defaults.single_class;
1364         case CEE_LDELEM_R8:
1365         case CEE_STELEM_R8:
1366                 return mono_defaults.double_class;
1367         case CEE_LDELEM_REF:
1368         case CEE_STELEM_REF:
1369                 return mono_defaults.object_class;
1370         default:
1371                 g_assert_not_reached ();
1372         }
1373         return NULL;
1374 }
1375
1376 /*
1377  * We try to share variables when possible
1378  */
1379 static MonoInst *
1380 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1381 {
1382         MonoInst *res;
1383         int pos, vnum;
1384
1385         /* inlining can result in deeper stacks */
1386         if (slot >= cfg->header->max_stack)
1387                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1388
1389         pos = ins->type - 1 + slot * STACK_MAX;
1390
1391         switch (ins->type) {
1392         case STACK_I4:
1393         case STACK_I8:
1394         case STACK_R8:
1395         case STACK_PTR:
1396         case STACK_MP:
1397         case STACK_OBJ:
1398                 if ((vnum = cfg->intvars [pos]))
1399                         return cfg->varinfo [vnum];
1400                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1401                 cfg->intvars [pos] = res->inst_c0;
1402                 break;
1403         default:
1404                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1405         }
1406         return res;
1407 }
1408
1409 static void
1410 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1411 {
1412         /*
1413          * Don't use this if a generic_context is set, since that means AOT can't
1414          * look up the method using just the image+token.
1415          * table == 0 means this is a reference made from a wrapper.
1416          */
1417         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1418                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1419                 jump_info_token->image = image;
1420                 jump_info_token->token = token;
1421                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1422         }
1423 }
1424
1425 /*
1426  * This function is called to handle items that are left on the evaluation stack
1427  * at basic block boundaries. What happens is that we save the values to local variables
1428  * and we reload them later when first entering the target basic block (with the
1429  * handle_loaded_temps () function).
1430  * A single joint point will use the same variables (stored in the array bb->out_stack or
1431  * bb->in_stack, if the basic block is before or after the joint point).
1432  *
1433  * This function needs to be called _before_ emitting the last instruction of
1434  * the bb (i.e. before emitting a branch).
1435  * If the stack merge fails at a join point, cfg->unverifiable is set.
1436  */
1437 static void
1438 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1439 {
1440         int i, bindex;
1441         MonoBasicBlock *bb = cfg->cbb;
1442         MonoBasicBlock *outb;
1443         MonoInst *inst, **locals;
1444         gboolean found;
1445
1446         if (!count)
1447                 return;
1448         if (cfg->verbose_level > 3)
1449                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1450         if (!bb->out_scount) {
1451                 bb->out_scount = count;
1452                 //printf ("bblock %d has out:", bb->block_num);
1453                 found = FALSE;
1454                 for (i = 0; i < bb->out_count; ++i) {
1455                         outb = bb->out_bb [i];
1456                         /* exception handlers are linked, but they should not be considered for stack args */
1457                         if (outb->flags & BB_EXCEPTION_HANDLER)
1458                                 continue;
1459                         //printf (" %d", outb->block_num);
1460                         if (outb->in_stack) {
1461                                 found = TRUE;
1462                                 bb->out_stack = outb->in_stack;
1463                                 break;
1464                         }
1465                 }
1466                 //printf ("\n");
1467                 if (!found) {
1468                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1469                         for (i = 0; i < count; ++i) {
1470                                 /*
1471                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1472                                  * stack slot and if they are of the same type.
1473                                  * This won't cause conflicts since if 'local' is used to
1474                                  * store one of the values in the in_stack of a bblock, then
1475                                  * the same variable will be used for the same outgoing stack
1476                                  * slot as well.
1477                                  * This doesn't work when inlining methods, since the bblocks
1478                                  * in the inlined methods do not inherit their in_stack from
1479                                  * the bblock they are inlined to. See bug #58863 for an
1480                                  * example.
1481                                  */
1482                                 if (cfg->inlined_method)
1483                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1484                                 else
1485                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1486                         }
1487                 }
1488         }
1489
1490         for (i = 0; i < bb->out_count; ++i) {
1491                 outb = bb->out_bb [i];
1492                 /* exception handlers are linked, but they should not be considered for stack args */
1493                 if (outb->flags & BB_EXCEPTION_HANDLER)
1494                         continue;
1495                 if (outb->in_scount) {
1496                         if (outb->in_scount != bb->out_scount) {
1497                                 cfg->unverifiable = TRUE;
1498                                 return;
1499                         }
1500                         continue; /* check they are the same locals */
1501                 }
1502                 outb->in_scount = count;
1503                 outb->in_stack = bb->out_stack;
1504         }
1505
1506         locals = bb->out_stack;
1507         cfg->cbb = bb;
1508         for (i = 0; i < count; ++i) {
1509                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1510                 inst->cil_code = sp [i]->cil_code;
1511                 sp [i] = locals [i];
1512                 if (cfg->verbose_level > 3)
1513                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1514         }
1515
1516         /*
1517          * It is possible that the out bblocks already have in_stack assigned, and
1518          * the in_stacks differ. In this case, we will store to all the different
1519          * in_stacks.
1520          */
1521
1522         found = TRUE;
1523         bindex = 0;
1524         while (found) {
1525                 /* Find a bblock which has a different in_stack */
1526                 found = FALSE;
1527                 while (bindex < bb->out_count) {
1528                         outb = bb->out_bb [bindex];
1529                         /* exception handlers are linked, but they should not be considered for stack args */
1530                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1531                                 bindex++;
1532                                 continue;
1533                         }
1534                         if (outb->in_stack != locals) {
1535                                 for (i = 0; i < count; ++i) {
1536                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1537                                         inst->cil_code = sp [i]->cil_code;
1538                                         sp [i] = locals [i];
1539                                         if (cfg->verbose_level > 3)
1540                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1541                                 }
1542                                 locals = outb->in_stack;
1543                                 found = TRUE;
1544                                 break;
1545                         }
1546                         bindex ++;
1547                 }
1548         }
1549 }
1550
1551 static MonoInst*
1552 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1553 {
1554         MonoInst *ins;
1555
1556         if (cfg->compile_aot) {
1557                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1558         } else {
1559                 MonoJumpInfo ji;
1560                 gpointer target;
1561                 MonoError error;
1562
1563                 ji.type = patch_type;
1564                 ji.data.target = data;
1565                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1566                 mono_error_assert_ok (&error);
1567
1568                 EMIT_NEW_PCONST (cfg, ins, target);
1569         }
1570         return ins;
1571 }
1572
1573 static void
1574 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1575 {
1576         int ibitmap_reg = alloc_preg (cfg);
1577 #ifdef COMPRESSED_INTERFACE_BITMAP
1578         MonoInst *args [2];
1579         MonoInst *res, *ins;
1580         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1581         MONO_ADD_INS (cfg->cbb, ins);
1582         args [0] = ins;
1583         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1584         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1585         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1586 #else
1587         int ibitmap_byte_reg = alloc_preg (cfg);
1588
1589         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1590
1591         if (cfg->compile_aot) {
1592                 int iid_reg = alloc_preg (cfg);
1593                 int shifted_iid_reg = alloc_preg (cfg);
1594                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1595                 int masked_iid_reg = alloc_preg (cfg);
1596                 int iid_one_bit_reg = alloc_preg (cfg);
1597                 int iid_bit_reg = alloc_preg (cfg);
1598                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1599                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1600                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1601                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1602                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1603                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1604                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1605                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1606         } else {
1607                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1608                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1609         }
1610 #endif
1611 }
1612
1613 /*
1614  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1615  * stored in "klass_reg" implements the interface "klass".
1616  */
1617 static void
1618 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1619 {
1620         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1621 }
1622
1623 /*
1624  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1625  * stored in "vtable_reg" implements the interface "klass".
1626  */
1627 static void
1628 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1629 {
1630         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1631 }
1632
1633 /*
1634  * Emit code which checks whenever the interface id of @klass is smaller than
1635  * than the value given by max_iid_reg.
1636 */
1637 static void
1638 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1639                                                  MonoBasicBlock *false_target)
1640 {
1641         if (cfg->compile_aot) {
1642                 int iid_reg = alloc_preg (cfg);
1643                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1644                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1645         }
1646         else
1647                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1648         if (false_target)
1649                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1650         else
1651                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1652 }
1653
1654 /* Same as above, but obtains max_iid from a vtable */
1655 static void
1656 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1657                                                                  MonoBasicBlock *false_target)
1658 {
1659         int max_iid_reg = alloc_preg (cfg);
1660
1661         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU4_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1662         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1663 }
1664
1665 /* Same as above, but obtains max_iid from a klass */
1666 static void
1667 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1668                                                                  MonoBasicBlock *false_target)
1669 {
1670         int max_iid_reg = alloc_preg (cfg);
1671
1672         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU4_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1673         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1674 }
1675
1676 static void
1677 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1678 {
1679         int idepth_reg = alloc_preg (cfg);
1680         int stypes_reg = alloc_preg (cfg);
1681         int stype = alloc_preg (cfg);
1682
1683         mono_class_setup_supertypes (klass);
1684
1685         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1686                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1687                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1688                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1689         }
1690         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1691         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1692         if (klass_ins) {
1693                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1694         } else if (cfg->compile_aot) {
1695                 int const_reg = alloc_preg (cfg);
1696                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1697                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1698         } else {
1699                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1700         }
1701         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1702 }
1703
1704 static void
1705 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1706 {
1707         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1708 }
1709
1710 static void
1711 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1712 {
1713         int intf_reg = alloc_preg (cfg);
1714
1715         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1716         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1717         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1718         if (true_target)
1719                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1720         else
1721                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1722 }
1723
1724 /*
1725  * Variant of the above that takes a register to the class, not the vtable.
1726  */
1727 static void
1728 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1729 {
1730         int intf_bit_reg = alloc_preg (cfg);
1731
1732         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1733         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1734         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1735         if (true_target)
1736                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1737         else
1738                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1739 }
1740
1741 static inline void
1742 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1743 {
1744         if (klass_inst) {
1745                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1746         } else {
1747                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1748                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1749         }
1750         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1751 }
1752
1753 static inline void
1754 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1755 {
1756         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1757 }
1758
1759 static inline void
1760 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1761 {
1762         if (cfg->compile_aot) {
1763                 int const_reg = alloc_preg (cfg);
1764                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1765                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1766         } else {
1767                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1768         }
1769         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1770 }
1771
1772 static void
1773 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1774
1775 static void
1776 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1777 {
1778         if (klass->rank) {
1779                 int rank_reg = alloc_preg (cfg);
1780                 int eclass_reg = alloc_preg (cfg);
1781
1782                 g_assert (!klass_inst);
1783                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1784                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1785                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1786                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1787                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1788                 if (klass->cast_class == mono_defaults.object_class) {
1789                         int parent_reg = alloc_preg (cfg);
1790                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1791                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1792                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1793                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1794                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1795                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1796                 } else if (klass->cast_class == mono_defaults.enum_class) {
1797                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1798                 } else if (mono_class_is_interface (klass->cast_class)) {
1799                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1800                 } else {
1801                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1802                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1803                 }
1804
1805                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1806                         /* Check that the object is a vector too */
1807                         int bounds_reg = alloc_preg (cfg);
1808                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1809                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1810                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1811                 }
1812         } else {
1813                 int idepth_reg = alloc_preg (cfg);
1814                 int stypes_reg = alloc_preg (cfg);
1815                 int stype = alloc_preg (cfg);
1816
1817                 mono_class_setup_supertypes (klass);
1818
1819                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1820                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1821                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1822                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1823                 }
1824                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1825                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1826                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1827         }
1828 }
1829
1830 static void
1831 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1832 {
1833         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1834 }
1835
1836 static void
1837 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1838 {
1839         int val_reg;
1840
1841         g_assert (val == 0);
1842
1843         if (align == 0)
1844                 align = 4;
1845
1846         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1847                 switch (size) {
1848                 case 1:
1849                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1850                         return;
1851                 case 2:
1852                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1853                         return;
1854                 case 4:
1855                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1856                         return;
1857 #if SIZEOF_REGISTER == 8
1858                 case 8:
1859                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1860                         return;
1861 #endif
1862                 }
1863         }
1864
1865         val_reg = alloc_preg (cfg);
1866
1867         if (SIZEOF_REGISTER == 8)
1868                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1869         else
1870                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1871
1872         if (align < 4) {
1873                 /* This could be optimized further if neccesary */
1874                 while (size >= 1) {
1875                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1876                         offset += 1;
1877                         size -= 1;
1878                 }
1879                 return;
1880         }
1881
1882         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1883                 if (offset % 8) {
1884                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1885                         offset += 4;
1886                         size -= 4;
1887                 }
1888                 while (size >= 8) {
1889                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1890                         offset += 8;
1891                         size -= 8;
1892                 }
1893         }
1894
1895         while (size >= 4) {
1896                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1897                 offset += 4;
1898                 size -= 4;
1899         }
1900         while (size >= 2) {
1901                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1902                 offset += 2;
1903                 size -= 2;
1904         }
1905         while (size >= 1) {
1906                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1907                 offset += 1;
1908                 size -= 1;
1909         }
1910 }
1911
1912 void
1913 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1914 {
1915         int cur_reg;
1916
1917         if (align == 0)
1918                 align = 4;
1919
1920         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1921         g_assert (size < 10000);
1922
1923         if (align < 4) {
1924                 /* This could be optimized further if neccesary */
1925                 while (size >= 1) {
1926                         cur_reg = alloc_preg (cfg);
1927                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1928                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1929                         doffset += 1;
1930                         soffset += 1;
1931                         size -= 1;
1932                 }
1933         }
1934
1935         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1936                 while (size >= 8) {
1937                         cur_reg = alloc_preg (cfg);
1938                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1939                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1940                         doffset += 8;
1941                         soffset += 8;
1942                         size -= 8;
1943                 }
1944         }
1945
1946         while (size >= 4) {
1947                 cur_reg = alloc_preg (cfg);
1948                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1949                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1950                 doffset += 4;
1951                 soffset += 4;
1952                 size -= 4;
1953         }
1954         while (size >= 2) {
1955                 cur_reg = alloc_preg (cfg);
1956                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1957                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1958                 doffset += 2;
1959                 soffset += 2;
1960                 size -= 2;
1961         }
1962         while (size >= 1) {
1963                 cur_reg = alloc_preg (cfg);
1964                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1965                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1966                 doffset += 1;
1967                 soffset += 1;
1968                 size -= 1;
1969         }
1970 }
1971
1972 static void
1973 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1974 {
1975         MonoInst *ins, *c;
1976
1977         if (cfg->compile_aot) {
1978                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1979                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1980                 ins->sreg1 = sreg1;
1981                 ins->sreg2 = c->dreg;
1982                 MONO_ADD_INS (cfg->cbb, ins);
1983         } else {
1984                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1985                 ins->sreg1 = sreg1;
1986                 ins->inst_offset = mini_get_tls_offset (tls_key);
1987                 MONO_ADD_INS (cfg->cbb, ins);
1988         }
1989 }
1990
1991 /*
1992  * emit_push_lmf:
1993  *
1994  *   Emit IR to push the current LMF onto the LMF stack.
1995  */
1996 static void
1997 emit_push_lmf (MonoCompile *cfg)
1998 {
1999         /*
2000          * Emit IR to push the LMF:
2001          * lmf_addr = <lmf_addr from tls>
2002          * lmf->lmf_addr = lmf_addr
2003          * lmf->prev_lmf = *lmf_addr
2004          * *lmf_addr = lmf
2005          */
2006         int lmf_reg, prev_lmf_reg;
2007         MonoInst *ins, *lmf_ins;
2008
2009         if (!cfg->lmf_ir)
2010                 return;
2011
2012         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2013                 /* Load current lmf */
2014                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2015                 g_assert (lmf_ins);
2016                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2017                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2018                 lmf_reg = ins->dreg;
2019                 /* Save previous_lmf */
2020                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2021                 /* Set new LMF */
2022                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2023         } else {
2024                 /*
2025                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2026                  */
2027                 if (!cfg->lmf_addr_var)
2028                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2029
2030 #ifdef HOST_WIN32
2031                 ins = mono_get_jit_tls_intrinsic (cfg);
2032                 if (ins) {
2033                         int jit_tls_dreg = ins->dreg;
2034
2035                         MONO_ADD_INS (cfg->cbb, ins);
2036                         lmf_reg = alloc_preg (cfg);
2037                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2038                 } else {
2039                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2040                 }
2041 #else
2042                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2043                 if (lmf_ins) {
2044                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2045                 } else {
2046 #ifdef TARGET_IOS
2047                         MonoInst *args [16], *jit_tls_ins, *ins;
2048
2049                         /* Inline mono_get_lmf_addr () */
2050                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2051
2052                         /* Load mono_jit_tls_id */
2053                         if (cfg->compile_aot)
2054                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2055                         else
2056                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2057                         /* call pthread_getspecific () */
2058                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2059                         /* lmf_addr = &jit_tls->lmf */
2060                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2061                         lmf_ins = ins;
2062 #else
2063                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2064 #endif
2065                 }
2066 #endif
2067                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2068
2069                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2070                 lmf_reg = ins->dreg;
2071
2072                 prev_lmf_reg = alloc_preg (cfg);
2073                 /* Save previous_lmf */
2074                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2075                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2076                 /* Set new lmf */
2077                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2078         }
2079 }
2080
2081 /*
2082  * emit_pop_lmf:
2083  *
2084  *   Emit IR to pop the current LMF from the LMF stack.
2085  */
2086 static void
2087 emit_pop_lmf (MonoCompile *cfg)
2088 {
2089         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2090         MonoInst *ins;
2091
2092         if (!cfg->lmf_ir)
2093                 return;
2094
2095         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2096         lmf_reg = ins->dreg;
2097
2098         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2099                 /* Load previous_lmf */
2100                 prev_lmf_reg = alloc_preg (cfg);
2101                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2102                 /* Set new LMF */
2103                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2104         } else {
2105                 /*
2106                  * Emit IR to pop the LMF:
2107                  * *(lmf->lmf_addr) = lmf->prev_lmf
2108                  */
2109                 /* This could be called before emit_push_lmf () */
2110                 if (!cfg->lmf_addr_var)
2111                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2112                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2113
2114                 prev_lmf_reg = alloc_preg (cfg);
2115                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2116                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2117         }
2118 }
2119
2120 static void
2121 emit_instrumentation_call (MonoCompile *cfg, void *func)
2122 {
2123         MonoInst *iargs [1];
2124
2125         /*
2126          * Avoid instrumenting inlined methods since it can
2127          * distort profiling results.
2128          */
2129         if (cfg->method != cfg->current_method)
2130                 return;
2131
2132         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2133                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2134                 mono_emit_jit_icall (cfg, func, iargs);
2135         }
2136 }
2137
2138 static int
2139 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2140 {
2141 handle_enum:
2142         type = mini_get_underlying_type (type);
2143         switch (type->type) {
2144         case MONO_TYPE_VOID:
2145                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2146         case MONO_TYPE_I1:
2147         case MONO_TYPE_U1:
2148         case MONO_TYPE_I2:
2149         case MONO_TYPE_U2:
2150         case MONO_TYPE_I4:
2151         case MONO_TYPE_U4:
2152                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2153         case MONO_TYPE_I:
2154         case MONO_TYPE_U:
2155         case MONO_TYPE_PTR:
2156         case MONO_TYPE_FNPTR:
2157                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2158         case MONO_TYPE_CLASS:
2159         case MONO_TYPE_STRING:
2160         case MONO_TYPE_OBJECT:
2161         case MONO_TYPE_SZARRAY:
2162         case MONO_TYPE_ARRAY:
2163                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2164         case MONO_TYPE_I8:
2165         case MONO_TYPE_U8:
2166                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2167         case MONO_TYPE_R4:
2168                 if (cfg->r4fp)
2169                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2170                 else
2171                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2172         case MONO_TYPE_R8:
2173                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2174         case MONO_TYPE_VALUETYPE:
2175                 if (type->data.klass->enumtype) {
2176                         type = mono_class_enum_basetype (type->data.klass);
2177                         goto handle_enum;
2178                 } else
2179                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2180         case MONO_TYPE_TYPEDBYREF:
2181                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2182         case MONO_TYPE_GENERICINST:
2183                 type = &type->data.generic_class->container_class->byval_arg;
2184                 goto handle_enum;
2185         case MONO_TYPE_VAR:
2186         case MONO_TYPE_MVAR:
2187                 /* gsharedvt */
2188                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2189         default:
2190                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2191         }
2192         return -1;
2193 }
2194
2195 //XXX this ignores if t is byref
2196 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
2197
2198 /*
2199  * target_type_is_incompatible:
2200  * @cfg: MonoCompile context
2201  *
2202  * Check that the item @arg on the evaluation stack can be stored
2203  * in the target type (can be a local, or field, etc).
2204  * The cfg arg can be used to check if we need verification or just
2205  * validity checks.
2206  *
2207  * Returns: non-0 value if arg can't be stored on a target.
2208  */
2209 static int
2210 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2211 {
2212         MonoType *simple_type;
2213         MonoClass *klass;
2214
2215         if (target->byref) {
2216                 /* FIXME: check that the pointed to types match */
2217                 if (arg->type == STACK_MP) {
2218                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2219                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2220                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2221
2222                         /* if the target is native int& or same type */
2223                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2224                                 return 0;
2225
2226                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2227                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2228                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2229                                 return 0;
2230                         return 1;
2231                 }
2232                 if (arg->type == STACK_PTR)
2233                         return 0;
2234                 return 1;
2235         }
2236
2237         simple_type = mini_get_underlying_type (target);
2238         switch (simple_type->type) {
2239         case MONO_TYPE_VOID:
2240                 return 1;
2241         case MONO_TYPE_I1:
2242         case MONO_TYPE_U1:
2243         case MONO_TYPE_I2:
2244         case MONO_TYPE_U2:
2245         case MONO_TYPE_I4:
2246         case MONO_TYPE_U4:
2247                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2248                         return 1;
2249                 return 0;
2250         case MONO_TYPE_PTR:
2251                 /* STACK_MP is needed when setting pinned locals */
2252                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2253                         return 1;
2254                 return 0;
2255         case MONO_TYPE_I:
2256         case MONO_TYPE_U:
2257         case MONO_TYPE_FNPTR:
2258                 /*
2259                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2260                  * in native int. (#688008).
2261                  */
2262                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2263                         return 1;
2264                 return 0;
2265         case MONO_TYPE_CLASS:
2266         case MONO_TYPE_STRING:
2267         case MONO_TYPE_OBJECT:
2268         case MONO_TYPE_SZARRAY:
2269         case MONO_TYPE_ARRAY:
2270                 if (arg->type != STACK_OBJ)
2271                         return 1;
2272                 /* FIXME: check type compatibility */
2273                 return 0;
2274         case MONO_TYPE_I8:
2275         case MONO_TYPE_U8:
2276                 if (arg->type != STACK_I8)
2277                         return 1;
2278                 return 0;
2279         case MONO_TYPE_R4:
2280                 if (arg->type != cfg->r4_stack_type)
2281                         return 1;
2282                 return 0;
2283         case MONO_TYPE_R8:
2284                 if (arg->type != STACK_R8)
2285                         return 1;
2286                 return 0;
2287         case MONO_TYPE_VALUETYPE:
2288                 if (arg->type != STACK_VTYPE)
2289                         return 1;
2290                 klass = mono_class_from_mono_type (simple_type);
2291                 if (klass != arg->klass)
2292                         return 1;
2293                 return 0;
2294         case MONO_TYPE_TYPEDBYREF:
2295                 if (arg->type != STACK_VTYPE)
2296                         return 1;
2297                 klass = mono_class_from_mono_type (simple_type);
2298                 if (klass != arg->klass)
2299                         return 1;
2300                 return 0;
2301         case MONO_TYPE_GENERICINST:
2302                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2303                         MonoClass *target_class;
2304                         if (arg->type != STACK_VTYPE)
2305                                 return 1;
2306                         klass = mono_class_from_mono_type (simple_type);
2307                         target_class = mono_class_from_mono_type (target);
2308                         /* The second cases is needed when doing partial sharing */
2309                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2310                                 return 1;
2311                         return 0;
2312                 } else {
2313                         if (arg->type != STACK_OBJ)
2314                                 return 1;
2315                         /* FIXME: check type compatibility */
2316                         return 0;
2317                 }
2318         case MONO_TYPE_VAR:
2319         case MONO_TYPE_MVAR:
2320                 g_assert (cfg->gshared);
2321                 if (mini_type_var_is_vt (simple_type)) {
2322                         if (arg->type != STACK_VTYPE)
2323                                 return 1;
2324                 } else {
2325                         if (arg->type != STACK_OBJ)
2326                                 return 1;
2327                 }
2328                 return 0;
2329         default:
2330                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2331         }
2332         return 1;
2333 }
2334
2335 /*
2336  * Prepare arguments for passing to a function call.
2337  * Return a non-zero value if the arguments can't be passed to the given
2338  * signature.
2339  * The type checks are not yet complete and some conversions may need
2340  * casts on 32 or 64 bit architectures.
2341  *
2342  * FIXME: implement this using target_type_is_incompatible ()
2343  */
2344 static int
2345 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2346 {
2347         MonoType *simple_type;
2348         int i;
2349
2350         if (sig->hasthis) {
2351                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2352                         return 1;
2353                 args++;
2354         }
2355         for (i = 0; i < sig->param_count; ++i) {
2356                 if (sig->params [i]->byref) {
2357                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2358                                 return 1;
2359                         continue;
2360                 }
2361                 simple_type = mini_get_underlying_type (sig->params [i]);
2362 handle_enum:
2363                 switch (simple_type->type) {
2364                 case MONO_TYPE_VOID:
2365                         return 1;
2366                         continue;
2367                 case MONO_TYPE_I1:
2368                 case MONO_TYPE_U1:
2369                 case MONO_TYPE_I2:
2370                 case MONO_TYPE_U2:
2371                 case MONO_TYPE_I4:
2372                 case MONO_TYPE_U4:
2373                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2374                                 return 1;
2375                         continue;
2376                 case MONO_TYPE_I:
2377                 case MONO_TYPE_U:
2378                 case MONO_TYPE_PTR:
2379                 case MONO_TYPE_FNPTR:
2380                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2381                                 return 1;
2382                         continue;
2383                 case MONO_TYPE_CLASS:
2384                 case MONO_TYPE_STRING:
2385                 case MONO_TYPE_OBJECT:
2386                 case MONO_TYPE_SZARRAY:
2387                 case MONO_TYPE_ARRAY:
2388                         if (args [i]->type != STACK_OBJ)
2389                                 return 1;
2390                         continue;
2391                 case MONO_TYPE_I8:
2392                 case MONO_TYPE_U8:
2393                         if (args [i]->type != STACK_I8)
2394                                 return 1;
2395                         continue;
2396                 case MONO_TYPE_R4:
2397                         if (args [i]->type != cfg->r4_stack_type)
2398                                 return 1;
2399                         continue;
2400                 case MONO_TYPE_R8:
2401                         if (args [i]->type != STACK_R8)
2402                                 return 1;
2403                         continue;
2404                 case MONO_TYPE_VALUETYPE:
2405                         if (simple_type->data.klass->enumtype) {
2406                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2407                                 goto handle_enum;
2408                         }
2409                         if (args [i]->type != STACK_VTYPE)
2410                                 return 1;
2411                         continue;
2412                 case MONO_TYPE_TYPEDBYREF:
2413                         if (args [i]->type != STACK_VTYPE)
2414                                 return 1;
2415                         continue;
2416                 case MONO_TYPE_GENERICINST:
2417                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2418                         goto handle_enum;
2419                 case MONO_TYPE_VAR:
2420                 case MONO_TYPE_MVAR:
2421                         /* gsharedvt */
2422                         if (args [i]->type != STACK_VTYPE)
2423                                 return 1;
2424                         continue;
2425                 default:
2426                         g_error ("unknown type 0x%02x in check_call_signature",
2427                                  simple_type->type);
2428                 }
2429         }
2430         return 0;
2431 }
2432
2433 static int
2434 callvirt_to_call (int opcode)
2435 {
2436         switch (opcode) {
2437         case OP_CALL_MEMBASE:
2438                 return OP_CALL;
2439         case OP_VOIDCALL_MEMBASE:
2440                 return OP_VOIDCALL;
2441         case OP_FCALL_MEMBASE:
2442                 return OP_FCALL;
2443         case OP_RCALL_MEMBASE:
2444                 return OP_RCALL;
2445         case OP_VCALL_MEMBASE:
2446                 return OP_VCALL;
2447         case OP_LCALL_MEMBASE:
2448                 return OP_LCALL;
2449         default:
2450                 g_assert_not_reached ();
2451         }
2452
2453         return -1;
2454 }
2455
2456 static int
2457 callvirt_to_call_reg (int opcode)
2458 {
2459         switch (opcode) {
2460         case OP_CALL_MEMBASE:
2461                 return OP_CALL_REG;
2462         case OP_VOIDCALL_MEMBASE:
2463                 return OP_VOIDCALL_REG;
2464         case OP_FCALL_MEMBASE:
2465                 return OP_FCALL_REG;
2466         case OP_RCALL_MEMBASE:
2467                 return OP_RCALL_REG;
2468         case OP_VCALL_MEMBASE:
2469                 return OP_VCALL_REG;
2470         case OP_LCALL_MEMBASE:
2471                 return OP_LCALL_REG;
2472         default:
2473                 g_assert_not_reached ();
2474         }
2475
2476         return -1;
2477 }
2478
2479 /* Either METHOD or IMT_ARG needs to be set */
2480 static void
2481 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2482 {
2483         int method_reg;
2484
2485         if (COMPILE_LLVM (cfg)) {
2486                 if (imt_arg) {
2487                         method_reg = alloc_preg (cfg);
2488                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2489                 } else {
2490                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2491                         method_reg = ins->dreg;
2492                 }
2493
2494 #ifdef ENABLE_LLVM
2495                 call->imt_arg_reg = method_reg;
2496 #endif
2497                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2498                 return;
2499         }
2500
2501         if (imt_arg) {
2502                 method_reg = alloc_preg (cfg);
2503                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2504         } else {
2505                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2506                 method_reg = ins->dreg;
2507         }
2508
2509         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2510 }
2511
2512 static MonoJumpInfo *
2513 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2514 {
2515         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2516
2517         ji->ip.i = ip;
2518         ji->type = type;
2519         ji->data.target = target;
2520
2521         return ji;
2522 }
2523
2524 static int
2525 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2526 {
2527         if (cfg->gshared)
2528                 return mono_class_check_context_used (klass);
2529         else
2530                 return 0;
2531 }
2532
2533 static int
2534 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2535 {
2536         if (cfg->gshared)
2537                 return mono_method_check_context_used (method);
2538         else
2539                 return 0;
2540 }
2541
2542 /*
2543  * check_method_sharing:
2544  *
2545  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2546  */
2547 static void
2548 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2549 {
2550         gboolean pass_vtable = FALSE;
2551         gboolean pass_mrgctx = FALSE;
2552
2553         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2554                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2555                 gboolean sharable = FALSE;
2556
2557                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2558                         sharable = TRUE;
2559
2560                 /*
2561                  * Pass vtable iff target method might
2562                  * be shared, which means that sharing
2563                  * is enabled for its class and its
2564                  * context is sharable (and it's not a
2565                  * generic method).
2566                  */
2567                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2568                         pass_vtable = TRUE;
2569         }
2570
2571         if (mini_method_get_context (cmethod) &&
2572                 mini_method_get_context (cmethod)->method_inst) {
2573                 g_assert (!pass_vtable);
2574
2575                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2576                         pass_mrgctx = TRUE;
2577                 } else {
2578                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2579                                 pass_mrgctx = TRUE;
2580                 }
2581         }
2582
2583         if (out_pass_vtable)
2584                 *out_pass_vtable = pass_vtable;
2585         if (out_pass_mrgctx)
2586                 *out_pass_mrgctx = pass_mrgctx;
2587 }
2588
2589 inline static MonoCallInst *
2590 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2591                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2592 {
2593         MonoType *sig_ret;
2594         MonoCallInst *call;
2595 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2596         int i;
2597 #endif
2598
2599         if (cfg->llvm_only)
2600                 tail = FALSE;
2601
2602         if (tail) {
2603                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2604
2605                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2606         } else
2607                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2608
2609         call->args = args;
2610         call->signature = sig;
2611         call->rgctx_reg = rgctx;
2612         sig_ret = mini_get_underlying_type (sig->ret);
2613
2614         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2615
2616         if (tail) {
2617                 if (mini_type_is_vtype (sig_ret)) {
2618                         call->vret_var = cfg->vret_addr;
2619                         //g_assert_not_reached ();
2620                 }
2621         } else if (mini_type_is_vtype (sig_ret)) {
2622                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2623                 MonoInst *loada;
2624
2625                 temp->backend.is_pinvoke = sig->pinvoke;
2626
2627                 /*
2628                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2629                  * address of return value to increase optimization opportunities.
2630                  * Before vtype decomposition, the dreg of the call ins itself represents the
2631                  * fact the call modifies the return value. After decomposition, the call will
2632                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2633                  * will be transformed into an LDADDR.
2634                  */
2635                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2636                 loada->dreg = alloc_preg (cfg);
2637                 loada->inst_p0 = temp;
2638                 /* We reference the call too since call->dreg could change during optimization */
2639                 loada->inst_p1 = call;
2640                 MONO_ADD_INS (cfg->cbb, loada);
2641
2642                 call->inst.dreg = temp->dreg;
2643
2644                 call->vret_var = loada;
2645         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2646                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2647
2648 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2649         if (COMPILE_SOFT_FLOAT (cfg)) {
2650                 /*
2651                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2652                  * an icall, but that cannot be done during the call sequence since it would clobber
2653                  * the call registers + the stack. So we do it before emitting the call.
2654                  */
2655                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2656                         MonoType *t;
2657                         MonoInst *in = call->args [i];
2658
2659                         if (i >= sig->hasthis)
2660                                 t = sig->params [i - sig->hasthis];
2661                         else
2662                                 t = &mono_defaults.int_class->byval_arg;
2663                         t = mono_type_get_underlying_type (t);
2664
2665                         if (!t->byref && t->type == MONO_TYPE_R4) {
2666                                 MonoInst *iargs [1];
2667                                 MonoInst *conv;
2668
2669                                 iargs [0] = in;
2670                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2671
2672                                 /* The result will be in an int vreg */
2673                                 call->args [i] = conv;
2674                         }
2675                 }
2676         }
2677 #endif
2678
2679         call->need_unbox_trampoline = unbox_trampoline;
2680
2681 #ifdef ENABLE_LLVM
2682         if (COMPILE_LLVM (cfg))
2683                 mono_llvm_emit_call (cfg, call);
2684         else
2685                 mono_arch_emit_call (cfg, call);
2686 #else
2687         mono_arch_emit_call (cfg, call);
2688 #endif
2689
2690         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2691         cfg->flags |= MONO_CFG_HAS_CALLS;
2692
2693         return call;
2694 }
2695
2696 static void
2697 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2698 {
2699         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2700         cfg->uses_rgctx_reg = TRUE;
2701         call->rgctx_reg = TRUE;
2702 #ifdef ENABLE_LLVM
2703         call->rgctx_arg_reg = rgctx_reg;
2704 #endif
2705 }
2706
2707 inline static MonoInst*
2708 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2709 {
2710         MonoCallInst *call;
2711         MonoInst *ins;
2712         int rgctx_reg = -1;
2713         gboolean check_sp = FALSE;
2714
2715         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2716                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2717
2718                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2719                         check_sp = TRUE;
2720         }
2721
2722         if (rgctx_arg) {
2723                 rgctx_reg = mono_alloc_preg (cfg);
2724                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2725         }
2726
2727         if (check_sp) {
2728                 if (!cfg->stack_inbalance_var)
2729                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2730
2731                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2732                 ins->dreg = cfg->stack_inbalance_var->dreg;
2733                 MONO_ADD_INS (cfg->cbb, ins);
2734         }
2735
2736         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2737
2738         call->inst.sreg1 = addr->dreg;
2739
2740         if (imt_arg)
2741                 emit_imt_argument (cfg, call, NULL, imt_arg);
2742
2743         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2744
2745         if (check_sp) {
2746                 int sp_reg;
2747
2748                 sp_reg = mono_alloc_preg (cfg);
2749
2750                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2751                 ins->dreg = sp_reg;
2752                 MONO_ADD_INS (cfg->cbb, ins);
2753
2754                 /* Restore the stack so we don't crash when throwing the exception */
2755                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2756                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2757                 MONO_ADD_INS (cfg->cbb, ins);
2758
2759                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2760                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2761         }
2762
2763         if (rgctx_arg)
2764                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2765
2766         return (MonoInst*)call;
2767 }
2768
2769 static MonoInst*
2770 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2771
2772 static MonoInst*
2773 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2774 static MonoInst*
2775 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2776
2777 static MonoInst*
2778 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2779                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2780 {
2781 #ifndef DISABLE_REMOTING
2782         gboolean might_be_remote = FALSE;
2783 #endif
2784         gboolean virtual_ = this_ins != NULL;
2785         gboolean enable_for_aot = TRUE;
2786         int context_used;
2787         MonoCallInst *call;
2788         MonoInst *call_target = NULL;
2789         int rgctx_reg = 0;
2790         gboolean need_unbox_trampoline;
2791
2792         if (!sig)
2793                 sig = mono_method_signature (method);
2794
2795         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2796                 g_assert_not_reached ();
2797
2798         if (rgctx_arg) {
2799                 rgctx_reg = mono_alloc_preg (cfg);
2800                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2801         }
2802
2803         if (method->string_ctor) {
2804                 /* Create the real signature */
2805                 /* FIXME: Cache these */
2806                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2807                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2808
2809                 sig = ctor_sig;
2810         }
2811
2812         context_used = mini_method_check_context_used (cfg, method);
2813
2814 #ifndef DISABLE_REMOTING
2815         might_be_remote = this_ins && sig->hasthis &&
2816                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2817                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2818
2819         if (might_be_remote && context_used) {
2820                 MonoInst *addr;
2821
2822                 g_assert (cfg->gshared);
2823
2824                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2825
2826                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2827         }
2828 #endif
2829
2830         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2831                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2832
2833         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2834
2835         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2836
2837 #ifndef DISABLE_REMOTING
2838         if (might_be_remote)
2839                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2840         else
2841 #endif
2842                 call->method = method;
2843         call->inst.flags |= MONO_INST_HAS_METHOD;
2844         call->inst.inst_left = this_ins;
2845         call->tail_call = tail;
2846
2847         if (virtual_) {
2848                 int vtable_reg, slot_reg, this_reg;
2849                 int offset;
2850
2851                 this_reg = this_ins->dreg;
2852
2853                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2854                         MonoInst *dummy_use;
2855
2856                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2857
2858                         /* Make a call to delegate->invoke_impl */
2859                         call->inst.inst_basereg = this_reg;
2860                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2861                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2862
2863                         /* We must emit a dummy use here because the delegate trampoline will
2864                         replace the 'this' argument with the delegate target making this activation
2865                         no longer a root for the delegate.
2866                         This is an issue for delegates that target collectible code such as dynamic
2867                         methods of GC'able assemblies.
2868
2869                         For a test case look into #667921.
2870
2871                         FIXME: a dummy use is not the best way to do it as the local register allocator
2872                         will put it on a caller save register and spil it around the call.
2873                         Ideally, we would either put it on a callee save register or only do the store part.
2874                          */
2875                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2876
2877                         return (MonoInst*)call;
2878                 }
2879
2880                 if ((!cfg->compile_aot || enable_for_aot) &&
2881                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2882                          (MONO_METHOD_IS_FINAL (method) &&
2883                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2884                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2885                         /*
2886                          * the method is not virtual, we just need to ensure this is not null
2887                          * and then we can call the method directly.
2888                          */
2889 #ifndef DISABLE_REMOTING
2890                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2891                                 /*
2892                                  * The check above ensures method is not gshared, this is needed since
2893                                  * gshared methods can't have wrappers.
2894                                  */
2895                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2896                         }
2897 #endif
2898
2899                         if (!method->string_ctor)
2900                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2901
2902                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2903                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2904                         /*
2905                          * the method is virtual, but we can statically dispatch since either
2906                          * it's class or the method itself are sealed.
2907                          * But first we need to ensure it's not a null reference.
2908                          */
2909                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2910
2911                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2912                 } else if (call_target) {
2913                         vtable_reg = alloc_preg (cfg);
2914                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2915
2916                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2917                         call->inst.sreg1 = call_target->dreg;
2918                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2919                 } else {
2920                         vtable_reg = alloc_preg (cfg);
2921                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2922                         if (mono_class_is_interface (method->klass)) {
2923                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2924                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2925                                 slot_reg = vtable_reg;
2926                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2927                         } else {
2928                                 slot_reg = vtable_reg;
2929                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2930                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2931                                 if (imt_arg) {
2932                                         g_assert (mono_method_signature (method)->generic_param_count);
2933                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2934                                 }
2935                         }
2936
2937                         call->inst.sreg1 = slot_reg;
2938                         call->inst.inst_offset = offset;
2939                         call->is_virtual = TRUE;
2940                 }
2941         }
2942
2943         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2944
2945         if (rgctx_arg)
2946                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2947
2948         return (MonoInst*)call;
2949 }
2950
2951 MonoInst*
2952 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2953 {
2954         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2955 }
2956
2957 MonoInst*
2958 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2959                                            MonoInst **args)
2960 {
2961         MonoCallInst *call;
2962
2963         g_assert (sig);
2964
2965         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2966         call->fptr = func;
2967
2968         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2969
2970         return (MonoInst*)call;
2971 }
2972
2973 MonoInst*
2974 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2975 {
2976         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2977
2978         g_assert (info);
2979
2980         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2981 }
2982
2983 /*
2984  * mono_emit_abs_call:
2985  *
2986  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2987  */
2988 inline static MonoInst*
2989 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2990                                         MonoMethodSignature *sig, MonoInst **args)
2991 {
2992         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2993         MonoInst *ins;
2994
2995         /*
2996          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2997          * handle it.
2998          */
2999         if (cfg->abs_patches == NULL)
3000                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
3001         g_hash_table_insert (cfg->abs_patches, ji, ji);
3002         ins = mono_emit_native_call (cfg, ji, sig, args);
3003         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
3004         return ins;
3005 }
3006
3007 static MonoMethodSignature*
3008 sig_to_rgctx_sig (MonoMethodSignature *sig)
3009 {
3010         // FIXME: memory allocation
3011         MonoMethodSignature *res;
3012         int i;
3013
3014         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
3015         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
3016         res->param_count = sig->param_count + 1;
3017         for (i = 0; i < sig->param_count; ++i)
3018                 res->params [i] = sig->params [i];
3019         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3020         return res;
3021 }
3022
3023 /* Make an indirect call to FSIG passing an additional argument */
3024 static MonoInst*
3025 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3026 {
3027         MonoMethodSignature *csig;
3028         MonoInst *args_buf [16];
3029         MonoInst **args;
3030         int i, pindex, tmp_reg;
3031
3032         /* Make a call with an rgctx/extra arg */
3033         if (fsig->param_count + 2 < 16)
3034                 args = args_buf;
3035         else
3036                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3037         pindex = 0;
3038         if (fsig->hasthis)
3039                 args [pindex ++] = orig_args [0];
3040         for (i = 0; i < fsig->param_count; ++i)
3041                 args [pindex ++] = orig_args [fsig->hasthis + i];
3042         tmp_reg = alloc_preg (cfg);
3043         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3044         csig = sig_to_rgctx_sig (fsig);
3045         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3046 }
3047
3048 /* Emit an indirect call to the function descriptor ADDR */
3049 static MonoInst*
3050 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3051 {
3052         int addr_reg, arg_reg;
3053         MonoInst *call_target;
3054
3055         g_assert (cfg->llvm_only);
3056
3057         /*
3058          * addr points to a <addr, arg> pair, load both of them, and
3059          * make a call to addr, passing arg as an extra arg.
3060          */
3061         addr_reg = alloc_preg (cfg);
3062         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3063         arg_reg = alloc_preg (cfg);
3064         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3065
3066         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3067 }
3068
3069 static gboolean
3070 direct_icalls_enabled (MonoCompile *cfg)
3071 {
3072         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3073 #ifdef TARGET_AMD64
3074         if (cfg->compile_llvm && !cfg->llvm_only)
3075                 return FALSE;
3076 #endif
3077         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3078                 return FALSE;
3079         return TRUE;
3080 }
3081
3082 MonoInst*
3083 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
3084 {
3085         /*
3086          * Call the jit icall without a wrapper if possible.
3087          * The wrapper is needed for the following reasons:
3088          * - to handle exceptions thrown using mono_raise_exceptions () from the
3089          *   icall function. The EH code needs the lmf frame pushed by the
3090          *   wrapper to be able to unwind back to managed code.
3091          * - to be able to do stack walks for asynchronously suspended
3092          *   threads when debugging.
3093          */
3094         if (info->no_raise && direct_icalls_enabled (cfg)) {
3095                 char *name;
3096                 int costs;
3097
3098                 if (!info->wrapper_method) {
3099                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3100                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3101                         g_free (name);
3102                         mono_memory_barrier ();
3103                 }
3104
3105                 /*
3106                  * Inline the wrapper method, which is basically a call to the C icall, and
3107                  * an exception check.
3108                  */
3109                 costs = inline_method (cfg, info->wrapper_method, NULL,
3110                                                            args, NULL, il_offset, TRUE);
3111                 g_assert (costs > 0);
3112                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3113
3114                 return args [0];
3115         } else {
3116                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3117         }
3118 }
3119
3120 static MonoInst*
3121 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3122 {
3123         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3124                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3125                         int widen_op = -1;
3126
3127                         /*
3128                          * Native code might return non register sized integers
3129                          * without initializing the upper bits.
3130                          */
3131                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3132                         case OP_LOADI1_MEMBASE:
3133                                 widen_op = OP_ICONV_TO_I1;
3134                                 break;
3135                         case OP_LOADU1_MEMBASE:
3136                                 widen_op = OP_ICONV_TO_U1;
3137                                 break;
3138                         case OP_LOADI2_MEMBASE:
3139                                 widen_op = OP_ICONV_TO_I2;
3140                                 break;
3141                         case OP_LOADU2_MEMBASE:
3142                                 widen_op = OP_ICONV_TO_U2;
3143                                 break;
3144                         default:
3145                                 break;
3146                         }
3147
3148                         if (widen_op != -1) {
3149                                 int dreg = alloc_preg (cfg);
3150                                 MonoInst *widen;
3151
3152                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3153                                 widen->type = ins->type;
3154                                 ins = widen;
3155                         }
3156                 }
3157         }
3158
3159         return ins;
3160 }
3161
3162
3163 static void
3164 emit_method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
3165 {
3166         MonoInst *args [16];
3167
3168         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (method), method, MONO_RGCTX_INFO_METHOD);
3169         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cil_method), cil_method, MONO_RGCTX_INFO_METHOD);
3170
3171         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
3172 }
3173
3174 static MonoMethod*
3175 get_memcpy_method (void)
3176 {
3177         static MonoMethod *memcpy_method = NULL;
3178         if (!memcpy_method) {
3179                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3180                 if (!memcpy_method)
3181                         g_error ("Old corlib found. Install a new one");
3182         }
3183         return memcpy_method;
3184 }
3185
3186 static void
3187 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3188 {
3189         MonoClassField *field;
3190         gpointer iter = NULL;
3191
3192         while ((field = mono_class_get_fields (klass, &iter))) {
3193                 int foffset;
3194
3195                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3196                         continue;
3197                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3198                 if (mini_type_is_reference (mono_field_get_type (field))) {
3199                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3200                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3201                 } else {
3202                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3203                         if (field_class->has_references)
3204                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3205                 }
3206         }
3207 }
3208
3209 static void
3210 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3211 {
3212         int card_table_shift_bits;
3213         gpointer card_table_mask;
3214         guint8 *card_table;
3215         MonoInst *dummy_use;
3216         int nursery_shift_bits;
3217         size_t nursery_size;
3218
3219         if (!cfg->gen_write_barriers)
3220                 return;
3221
3222         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3223
3224         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3225
3226         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3227                 MonoInst *wbarrier;
3228
3229                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3230                 wbarrier->sreg1 = ptr->dreg;
3231                 wbarrier->sreg2 = value->dreg;
3232                 MONO_ADD_INS (cfg->cbb, wbarrier);
3233         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3234                 int offset_reg = alloc_preg (cfg);
3235                 int card_reg;
3236                 MonoInst *ins;
3237
3238                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3239                 if (card_table_mask)
3240                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3241
3242                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3243                  * IMM's larger than 32bits.
3244                  */
3245                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3246                 card_reg = ins->dreg;
3247
3248                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3249                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3250         } else {
3251                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3252                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3253         }
3254
3255         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3256 }
3257
3258 static gboolean
3259 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3260 {
3261         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3262         unsigned need_wb = 0;
3263
3264         if (align == 0)
3265                 align = 4;
3266
3267         /*types with references can't have alignment smaller than sizeof(void*) */
3268         if (align < SIZEOF_VOID_P)
3269                 return FALSE;
3270
3271         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3272         if (size > 32 * SIZEOF_VOID_P)
3273                 return FALSE;
3274
3275         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3276
3277         /* We don't unroll more than 5 stores to avoid code bloat. */
3278         if (size > 5 * SIZEOF_VOID_P) {
3279                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3280                 size += (SIZEOF_VOID_P - 1);
3281                 size &= ~(SIZEOF_VOID_P - 1);
3282
3283                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3284                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3285                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3286                 return TRUE;
3287         }
3288
3289         destreg = iargs [0]->dreg;
3290         srcreg = iargs [1]->dreg;
3291         offset = 0;
3292
3293         dest_ptr_reg = alloc_preg (cfg);
3294         tmp_reg = alloc_preg (cfg);
3295
3296         /*tmp = dreg*/
3297         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3298
3299         while (size >= SIZEOF_VOID_P) {
3300                 MonoInst *load_inst;
3301                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3302                 load_inst->dreg = tmp_reg;
3303                 load_inst->inst_basereg = srcreg;
3304                 load_inst->inst_offset = offset;
3305                 MONO_ADD_INS (cfg->cbb, load_inst);
3306
3307                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3308
3309                 if (need_wb & 0x1)
3310                         emit_write_barrier (cfg, iargs [0], load_inst);
3311
3312                 offset += SIZEOF_VOID_P;
3313                 size -= SIZEOF_VOID_P;
3314                 need_wb >>= 1;
3315
3316                 /*tmp += sizeof (void*)*/
3317                 if (size >= SIZEOF_VOID_P) {
3318                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3319                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3320                 }
3321         }
3322
3323         /* Those cannot be references since size < sizeof (void*) */
3324         while (size >= 4) {
3325                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3326                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3327                 offset += 4;
3328                 size -= 4;
3329         }
3330
3331         while (size >= 2) {
3332                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3333                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3334                 offset += 2;
3335                 size -= 2;
3336         }
3337
3338         while (size >= 1) {
3339                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3340                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3341                 offset += 1;
3342                 size -= 1;
3343         }
3344
3345         return TRUE;
3346 }
3347
3348 /*
3349  * Emit code to copy a valuetype of type @klass whose address is stored in
3350  * @src->dreg to memory whose address is stored at @dest->dreg.
3351  */
3352 void
3353 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3354 {
3355         MonoInst *iargs [4];
3356         int n;
3357         guint32 align = 0;
3358         MonoMethod *memcpy_method;
3359         MonoInst *size_ins = NULL;
3360         MonoInst *memcpy_ins = NULL;
3361
3362         g_assert (klass);
3363         if (cfg->gshared)
3364                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3365
3366         /*
3367          * This check breaks with spilled vars... need to handle it during verification anyway.
3368          * g_assert (klass && klass == src->klass && klass == dest->klass);
3369          */
3370
3371         if (mini_is_gsharedvt_klass (klass)) {
3372                 g_assert (!native);
3373                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3374                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3375         }
3376
3377         if (native)
3378                 n = mono_class_native_size (klass, &align);
3379         else
3380                 n = mono_class_value_size (klass, &align);
3381
3382         /* if native is true there should be no references in the struct */
3383         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3384                 /* Avoid barriers when storing to the stack */
3385                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3386                           (dest->opcode == OP_LDADDR))) {
3387                         int context_used;
3388
3389                         iargs [0] = dest;
3390                         iargs [1] = src;
3391
3392                         context_used = mini_class_check_context_used (cfg, klass);
3393
3394                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3395                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3396                                 return;
3397                         } else if (context_used) {
3398                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3399                         }  else {
3400                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3401                                 if (!cfg->compile_aot)
3402                                         mono_class_compute_gc_descriptor (klass);
3403                         }
3404
3405                         if (size_ins)
3406                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3407                         else
3408                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3409                         return;
3410                 }
3411         }
3412
3413         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3414                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3415                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3416         } else {
3417                 iargs [0] = dest;
3418                 iargs [1] = src;
3419                 if (size_ins)
3420                         iargs [2] = size_ins;
3421                 else
3422                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3423
3424                 memcpy_method = get_memcpy_method ();
3425                 if (memcpy_ins)
3426                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3427                 else
3428                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3429         }
3430 }
3431
3432 static MonoMethod*
3433 get_memset_method (void)
3434 {
3435         static MonoMethod *memset_method = NULL;
3436         if (!memset_method) {
3437                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3438                 if (!memset_method)
3439                         g_error ("Old corlib found. Install a new one");
3440         }
3441         return memset_method;
3442 }
3443
3444 void
3445 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3446 {
3447         MonoInst *iargs [3];
3448         int n;
3449         guint32 align;
3450         MonoMethod *memset_method;
3451         MonoInst *size_ins = NULL;
3452         MonoInst *bzero_ins = NULL;
3453         static MonoMethod *bzero_method;
3454
3455         /* FIXME: Optimize this for the case when dest is an LDADDR */
3456         mono_class_init (klass);
3457         if (mini_is_gsharedvt_klass (klass)) {
3458                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3459                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3460                 if (!bzero_method)
3461                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3462                 g_assert (bzero_method);
3463                 iargs [0] = dest;
3464                 iargs [1] = size_ins;
3465                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3466                 return;
3467         }
3468
3469         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3470
3471         n = mono_class_value_size (klass, &align);
3472
3473         if (n <= sizeof (gpointer) * 8) {
3474                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3475         }
3476         else {
3477                 memset_method = get_memset_method ();
3478                 iargs [0] = dest;
3479                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3480                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3481                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3482         }
3483 }
3484
3485 /*
3486  * emit_get_rgctx:
3487  *
3488  *   Emit IR to return either the this pointer for instance method,
3489  * or the mrgctx for static methods.
3490  */
3491 static MonoInst*
3492 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3493 {
3494         MonoInst *this_ins = NULL;
3495
3496         g_assert (cfg->gshared);
3497
3498         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3499                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3500                         !method->klass->valuetype)
3501                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3502
3503         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3504                 MonoInst *mrgctx_loc, *mrgctx_var;
3505
3506                 g_assert (!this_ins);
3507                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3508
3509                 mrgctx_loc = mono_get_vtable_var (cfg);
3510                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3511
3512                 return mrgctx_var;
3513         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3514                 MonoInst *vtable_loc, *vtable_var;
3515
3516                 g_assert (!this_ins);
3517
3518                 vtable_loc = mono_get_vtable_var (cfg);
3519                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3520
3521                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3522                         MonoInst *mrgctx_var = vtable_var;
3523                         int vtable_reg;
3524
3525                         vtable_reg = alloc_preg (cfg);
3526                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3527                         vtable_var->type = STACK_PTR;
3528                 }
3529
3530                 return vtable_var;
3531         } else {
3532                 MonoInst *ins;
3533                 int vtable_reg;
3534
3535                 vtable_reg = alloc_preg (cfg);
3536                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3537                 return ins;
3538         }
3539 }
3540
3541 static MonoJumpInfoRgctxEntry *
3542 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3543 {
3544         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3545         res->method = method;
3546         res->in_mrgctx = in_mrgctx;
3547         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3548         res->data->type = patch_type;
3549         res->data->data.target = patch_data;
3550         res->info_type = info_type;
3551
3552         return res;
3553 }
3554
3555 static inline MonoInst*
3556 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3557 {
3558         MonoInst *args [16];
3559         MonoInst *call;
3560
3561         // FIXME: No fastpath since the slot is not a compile time constant
3562         args [0] = rgctx;
3563         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3564         if (entry->in_mrgctx)
3565                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3566         else
3567                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3568         return call;
3569 #if 0
3570         /*
3571          * FIXME: This can be called during decompose, which is a problem since it creates
3572          * new bblocks.
3573          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3574          */
3575         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3576         gboolean mrgctx;
3577         MonoBasicBlock *is_null_bb, *end_bb;
3578         MonoInst *res, *ins, *call;
3579         MonoInst *args[16];
3580
3581         slot = mini_get_rgctx_entry_slot (entry);
3582
3583         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3584         index = MONO_RGCTX_SLOT_INDEX (slot);
3585         if (mrgctx)
3586                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3587         for (depth = 0; ; ++depth) {
3588                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3589
3590                 if (index < size - 1)
3591                         break;
3592                 index -= size - 1;
3593         }
3594
3595         NEW_BBLOCK (cfg, end_bb);
3596         NEW_BBLOCK (cfg, is_null_bb);
3597
3598         if (mrgctx) {
3599                 rgctx_reg = rgctx->dreg;
3600         } else {
3601                 rgctx_reg = alloc_preg (cfg);
3602
3603                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3604                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3605                 NEW_BBLOCK (cfg, is_null_bb);
3606
3607                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3608                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3609         }
3610
3611         for (i = 0; i < depth; ++i) {
3612                 int array_reg = alloc_preg (cfg);
3613
3614                 /* load ptr to next array */
3615                 if (mrgctx && i == 0)
3616                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3617                 else
3618                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3619                 rgctx_reg = array_reg;
3620                 /* is the ptr null? */
3621                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3622                 /* if yes, jump to actual trampoline */
3623                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3624         }
3625
3626         /* fetch slot */
3627         val_reg = alloc_preg (cfg);
3628         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3629         /* is the slot null? */
3630         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3631         /* if yes, jump to actual trampoline */
3632         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3633
3634         /* Fastpath */
3635         res_reg = alloc_preg (cfg);
3636         MONO_INST_NEW (cfg, ins, OP_MOVE);
3637         ins->dreg = res_reg;
3638         ins->sreg1 = val_reg;
3639         MONO_ADD_INS (cfg->cbb, ins);
3640         res = ins;
3641         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3642
3643         /* Slowpath */
3644         MONO_START_BB (cfg, is_null_bb);
3645         args [0] = rgctx;
3646         EMIT_NEW_ICONST (cfg, args [1], index);
3647         if (mrgctx)
3648                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3649         else
3650                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3651         MONO_INST_NEW (cfg, ins, OP_MOVE);
3652         ins->dreg = res_reg;
3653         ins->sreg1 = call->dreg;
3654         MONO_ADD_INS (cfg->cbb, ins);
3655         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3656
3657         MONO_START_BB (cfg, end_bb);
3658
3659         return res;
3660 #endif
3661 }
3662
3663 /*
3664  * emit_rgctx_fetch:
3665  *
3666  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3667  * given by RGCTX.
3668  */
3669 static inline MonoInst*
3670 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3671 {
3672         if (cfg->llvm_only)
3673                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3674         else
3675                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3676 }
3677
3678 static MonoInst*
3679 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3680                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3681 {
3682         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3683         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3684
3685         return emit_rgctx_fetch (cfg, rgctx, entry);
3686 }
3687
3688 static MonoInst*
3689 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3690                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3691 {
3692         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3693         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3694
3695         return emit_rgctx_fetch (cfg, rgctx, entry);
3696 }
3697
3698 static MonoInst*
3699 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3700                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3701 {
3702         MonoJumpInfoGSharedVtCall *call_info;
3703         MonoJumpInfoRgctxEntry *entry;
3704         MonoInst *rgctx;
3705
3706         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3707         call_info->sig = sig;
3708         call_info->method = cmethod;
3709
3710         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3711         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3712
3713         return emit_rgctx_fetch (cfg, rgctx, entry);
3714 }
3715
3716 /*
3717  * emit_get_rgctx_virt_method:
3718  *
3719  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3720  */
3721 static MonoInst*
3722 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3723                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3724 {
3725         MonoJumpInfoVirtMethod *info;
3726         MonoJumpInfoRgctxEntry *entry;
3727         MonoInst *rgctx;
3728
3729         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3730         info->klass = klass;
3731         info->method = virt_method;
3732
3733         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3734         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3735
3736         return emit_rgctx_fetch (cfg, rgctx, entry);
3737 }
3738
3739 static MonoInst*
3740 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3741                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3742 {
3743         MonoJumpInfoRgctxEntry *entry;
3744         MonoInst *rgctx;
3745
3746         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3747         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3748
3749         return emit_rgctx_fetch (cfg, rgctx, entry);
3750 }
3751
3752 /*
3753  * emit_get_rgctx_method:
3754  *
3755  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3756  * normal constants, else emit a load from the rgctx.
3757  */
3758 static MonoInst*
3759 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3760                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3761 {
3762         if (!context_used) {
3763                 MonoInst *ins;
3764
3765                 switch (rgctx_type) {
3766                 case MONO_RGCTX_INFO_METHOD:
3767                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3768                         return ins;
3769                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3770                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3771                         return ins;
3772                 default:
3773                         g_assert_not_reached ();
3774                 }
3775         } else {
3776                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3777                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3778
3779                 return emit_rgctx_fetch (cfg, rgctx, entry);
3780         }
3781 }
3782
3783 static MonoInst*
3784 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3785                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3786 {
3787         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3788         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3789
3790         return emit_rgctx_fetch (cfg, rgctx, entry);
3791 }
3792
3793 static int
3794 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3795 {
3796         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3797         MonoRuntimeGenericContextInfoTemplate *template_;
3798         int i, idx;
3799
3800         g_assert (info);
3801
3802         for (i = 0; i < info->num_entries; ++i) {
3803                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3804
3805                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3806                         return i;
3807         }
3808
3809         if (info->num_entries == info->count_entries) {
3810                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3811                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3812
3813                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3814
3815                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3816                 info->entries = new_entries;
3817                 info->count_entries = new_count_entries;
3818         }
3819
3820         idx = info->num_entries;
3821         template_ = &info->entries [idx];
3822         template_->info_type = rgctx_type;
3823         template_->data = data;
3824
3825         info->num_entries ++;
3826
3827         return idx;
3828 }
3829
3830 /*
3831  * emit_get_gsharedvt_info:
3832  *
3833  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3834  */
3835 static MonoInst*
3836 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3837 {
3838         MonoInst *ins;
3839         int idx, dreg;
3840
3841         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3842         /* Load info->entries [idx] */
3843         dreg = alloc_preg (cfg);
3844         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3845
3846         return ins;
3847 }
3848
3849 static MonoInst*
3850 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3851 {
3852         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3853 }
3854
3855 /*
3856  * On return the caller must check @klass for load errors.
3857  */
3858 static void
3859 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3860 {
3861         MonoInst *vtable_arg;
3862         int context_used;
3863
3864         context_used = mini_class_check_context_used (cfg, klass);
3865
3866         if (context_used) {
3867                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3868                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3869         } else {
3870                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3871
3872                 if (!vtable)
3873                         return;
3874                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3875         }
3876
3877         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3878                 MonoInst *ins;
3879
3880                 /*
3881                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3882                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3883                  */
3884                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3885                 ins->sreg1 = vtable_arg->dreg;
3886                 MONO_ADD_INS (cfg->cbb, ins);
3887         } else {
3888                 static int byte_offset = -1;
3889                 static guint8 bitmask;
3890                 int bits_reg, inited_reg;
3891                 MonoBasicBlock *inited_bb;
3892                 MonoInst *args [16];
3893
3894                 if (byte_offset < 0)
3895                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3896
3897                 bits_reg = alloc_ireg (cfg);
3898                 inited_reg = alloc_ireg (cfg);
3899
3900                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3901                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3902
3903                 NEW_BBLOCK (cfg, inited_bb);
3904
3905                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3906                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3907
3908                 args [0] = vtable_arg;
3909                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3910
3911                 MONO_START_BB (cfg, inited_bb);
3912         }
3913 }
3914
3915 static void
3916 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3917 {
3918         MonoInst *ins;
3919
3920         if (cfg->gen_seq_points && cfg->method == method) {
3921                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3922                 if (nonempty_stack)
3923                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3924                 MONO_ADD_INS (cfg->cbb, ins);
3925         }
3926 }
3927
3928 static void
3929 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3930 {
3931         if (mini_get_debug_options ()->better_cast_details) {
3932                 int vtable_reg = alloc_preg (cfg);
3933                 int klass_reg = alloc_preg (cfg);
3934                 MonoBasicBlock *is_null_bb = NULL;
3935                 MonoInst *tls_get;
3936                 int to_klass_reg, context_used;
3937
3938                 if (null_check) {
3939                         NEW_BBLOCK (cfg, is_null_bb);
3940
3941                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3942                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3943                 }
3944
3945                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3946                 if (!tls_get) {
3947                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3948                         exit (1);
3949                 }
3950
3951                 MONO_ADD_INS (cfg->cbb, tls_get);
3952                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3953                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3954
3955                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3956
3957                 context_used = mini_class_check_context_used (cfg, klass);
3958                 if (context_used) {
3959                         MonoInst *class_ins;
3960
3961                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3962                         to_klass_reg = class_ins->dreg;
3963                 } else {
3964                         to_klass_reg = alloc_preg (cfg);
3965                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3966                 }
3967                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3968
3969                 if (null_check)
3970                         MONO_START_BB (cfg, is_null_bb);
3971         }
3972 }
3973
3974 static void
3975 reset_cast_details (MonoCompile *cfg)
3976 {
3977         /* Reset the variables holding the cast details */
3978         if (mini_get_debug_options ()->better_cast_details) {
3979                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3980
3981                 MONO_ADD_INS (cfg->cbb, tls_get);
3982                 /* It is enough to reset the from field */
3983                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3984         }
3985 }
3986
3987 /*
3988  * On return the caller must check @array_class for load errors
3989  */
3990 static void
3991 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3992 {
3993         int vtable_reg = alloc_preg (cfg);
3994         int context_used;
3995
3996         context_used = mini_class_check_context_used (cfg, array_class);
3997
3998         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3999
4000         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4001
4002         if (cfg->opt & MONO_OPT_SHARED) {
4003                 int class_reg = alloc_preg (cfg);
4004                 MonoInst *ins;
4005
4006                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4007                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
4008                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
4009         } else if (context_used) {
4010                 MonoInst *vtable_ins;
4011
4012                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
4013                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
4014         } else {
4015                 if (cfg->compile_aot) {
4016                         int vt_reg;
4017                         MonoVTable *vtable;
4018
4019                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4020                                 return;
4021                         vt_reg = alloc_preg (cfg);
4022                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4023                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4024                 } else {
4025                         MonoVTable *vtable;
4026                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4027                                 return;
4028                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4029                 }
4030         }
4031
4032         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4033
4034         reset_cast_details (cfg);
4035 }
4036
4037 /**
4038  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4039  * generic code is generated.
4040  */
4041 static MonoInst*
4042 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4043 {
4044         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4045
4046         if (context_used) {
4047                 MonoInst *rgctx, *addr;
4048
4049                 /* FIXME: What if the class is shared?  We might not
4050                    have to get the address of the method from the
4051                    RGCTX. */
4052                 addr = emit_get_rgctx_method (cfg, context_used, method,
4053                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4054                 if (cfg->llvm_only) {
4055                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
4056                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4057                 } else {
4058                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4059
4060                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4061                 }
4062         } else {
4063                 gboolean pass_vtable, pass_mrgctx;
4064                 MonoInst *rgctx_arg = NULL;
4065
4066                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4067                 g_assert (!pass_mrgctx);
4068
4069                 if (pass_vtable) {
4070                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4071
4072                         g_assert (vtable);
4073                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4074                 }
4075
4076                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4077         }
4078 }
4079
4080 static MonoInst*
4081 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4082 {
4083         MonoInst *add;
4084         int obj_reg;
4085         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4086         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4087         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4088         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4089
4090         obj_reg = sp [0]->dreg;
4091         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4092         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4093
4094         /* FIXME: generics */
4095         g_assert (klass->rank == 0);
4096
4097         // Check rank == 0
4098         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4099         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4100
4101         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4102         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4103
4104         if (context_used) {
4105                 MonoInst *element_class;
4106
4107                 /* This assertion is from the unboxcast insn */
4108                 g_assert (klass->rank == 0);
4109
4110                 element_class = emit_get_rgctx_klass (cfg, context_used,
4111                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4112
4113                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4114                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4115         } else {
4116                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4117                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4118                 reset_cast_details (cfg);
4119         }
4120
4121         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4122         MONO_ADD_INS (cfg->cbb, add);
4123         add->type = STACK_MP;
4124         add->klass = klass;
4125
4126         return add;
4127 }
4128
4129 static MonoInst*
4130 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4131 {
4132         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4133         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4134         MonoInst *ins;
4135         int dreg, addr_reg;
4136
4137         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4138
4139         /* obj */
4140         args [0] = obj;
4141
4142         /* klass */
4143         args [1] = klass_inst;
4144
4145         /* CASTCLASS */
4146         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4147
4148         NEW_BBLOCK (cfg, is_ref_bb);
4149         NEW_BBLOCK (cfg, is_nullable_bb);
4150         NEW_BBLOCK (cfg, end_bb);
4151         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4152         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4153         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4154
4155         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4156         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4157
4158         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4159         addr_reg = alloc_dreg (cfg, STACK_MP);
4160
4161         /* Non-ref case */
4162         /* UNBOX */
4163         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4164         MONO_ADD_INS (cfg->cbb, addr);
4165
4166         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4167
4168         /* Ref case */
4169         MONO_START_BB (cfg, is_ref_bb);
4170
4171         /* Save the ref to a temporary */
4172         dreg = alloc_ireg (cfg);
4173         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4174         addr->dreg = addr_reg;
4175         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4176         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4177
4178         /* Nullable case */
4179         MONO_START_BB (cfg, is_nullable_bb);
4180
4181         {
4182                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4183                 MonoInst *unbox_call;
4184                 MonoMethodSignature *unbox_sig;
4185
4186                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4187                 unbox_sig->ret = &klass->byval_arg;
4188                 unbox_sig->param_count = 1;
4189                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4190
4191                 if (cfg->llvm_only)
4192                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4193                 else
4194                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4195
4196                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4197                 addr->dreg = addr_reg;
4198         }
4199
4200         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4201
4202         /* End */
4203         MONO_START_BB (cfg, end_bb);
4204
4205         /* LDOBJ */
4206         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4207
4208         return ins;
4209 }
4210
4211 /*
4212  * Returns NULL and set the cfg exception on error.
4213  */
4214 static MonoInst*
4215 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4216 {
4217         MonoInst *iargs [2];
4218         void *alloc_ftn;
4219
4220         if (context_used) {
4221                 MonoInst *data;
4222                 MonoRgctxInfoType rgctx_info;
4223                 MonoInst *iargs [2];
4224                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4225
4226                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4227
4228                 if (cfg->opt & MONO_OPT_SHARED)
4229                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4230                 else
4231                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4232                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4233
4234                 if (cfg->opt & MONO_OPT_SHARED) {
4235                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4236                         iargs [1] = data;
4237                         alloc_ftn = ves_icall_object_new;
4238                 } else {
4239                         iargs [0] = data;
4240                         alloc_ftn = ves_icall_object_new_specific;
4241                 }
4242
4243                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4244                         if (known_instance_size) {
4245                                 int size = mono_class_instance_size (klass);
4246                                 if (size < sizeof (MonoObject))
4247                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4248
4249                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4250                         }
4251                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4252                 }
4253
4254                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4255         }
4256
4257         if (cfg->opt & MONO_OPT_SHARED) {
4258                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4259                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4260
4261                 alloc_ftn = ves_icall_object_new;
4262         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
4263                 /* This happens often in argument checking code, eg. throw new FooException... */
4264                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4265                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4266                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4267         } else {
4268                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4269                 MonoMethod *managed_alloc = NULL;
4270                 gboolean pass_lw;
4271
4272                 if (!vtable) {
4273                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4274                         cfg->exception_ptr = klass;
4275                         return NULL;
4276                 }
4277
4278                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4279
4280                 if (managed_alloc) {
4281                         int size = mono_class_instance_size (klass);
4282                         if (size < sizeof (MonoObject))
4283                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4284
4285                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4286                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4287                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4288                 }
4289                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4290                 if (pass_lw) {
4291                         guint32 lw = vtable->klass->instance_size;
4292                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4293                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4294                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4295                 }
4296                 else {
4297                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4298                 }
4299         }
4300
4301         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4302 }
4303
4304 /*
4305  * Returns NULL and set the cfg exception on error.
4306  */
4307 static MonoInst*
4308 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4309 {
4310         MonoInst *alloc, *ins;
4311
4312         if (mono_class_is_nullable (klass)) {
4313                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4314
4315                 if (context_used) {
4316                         if (cfg->llvm_only && cfg->gsharedvt) {
4317                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4318                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4319                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4320                         } else {
4321                                 /* FIXME: What if the class is shared?  We might not
4322                                    have to get the method address from the RGCTX. */
4323                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4324                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4325                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4326
4327                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4328                         }
4329                 } else {
4330                         gboolean pass_vtable, pass_mrgctx;
4331                         MonoInst *rgctx_arg = NULL;
4332
4333                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4334                         g_assert (!pass_mrgctx);
4335
4336                         if (pass_vtable) {
4337                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4338
4339                                 g_assert (vtable);
4340                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4341                         }
4342
4343                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4344                 }
4345         }
4346
4347         if (mini_is_gsharedvt_klass (klass)) {
4348                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4349                 MonoInst *res, *is_ref, *src_var, *addr;
4350                 int dreg;
4351
4352                 dreg = alloc_ireg (cfg);
4353
4354                 NEW_BBLOCK (cfg, is_ref_bb);
4355                 NEW_BBLOCK (cfg, is_nullable_bb);
4356                 NEW_BBLOCK (cfg, end_bb);
4357                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4358                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4359                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4360
4361                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4362                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4363
4364                 /* Non-ref case */
4365                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4366                 if (!alloc)
4367                         return NULL;
4368                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4369                 ins->opcode = OP_STOREV_MEMBASE;
4370
4371                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4372                 res->type = STACK_OBJ;
4373                 res->klass = klass;
4374                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4375
4376                 /* Ref case */
4377                 MONO_START_BB (cfg, is_ref_bb);
4378
4379                 /* val is a vtype, so has to load the value manually */
4380                 src_var = get_vreg_to_inst (cfg, val->dreg);
4381                 if (!src_var)
4382                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4383                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4384                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4385                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4386
4387                 /* Nullable case */
4388                 MONO_START_BB (cfg, is_nullable_bb);
4389
4390                 {
4391                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4392                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4393                         MonoInst *box_call;
4394                         MonoMethodSignature *box_sig;
4395
4396                         /*
4397                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4398                          * construct that method at JIT time, so have to do things by hand.
4399                          */
4400                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4401                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4402                         box_sig->param_count = 1;
4403                         box_sig->params [0] = &klass->byval_arg;
4404
4405                         if (cfg->llvm_only)
4406                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4407                         else
4408                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4409                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4410                         res->type = STACK_OBJ;
4411                         res->klass = klass;
4412                 }
4413
4414                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4415
4416                 MONO_START_BB (cfg, end_bb);
4417
4418                 return res;
4419         } else {
4420                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4421                 if (!alloc)
4422                         return NULL;
4423
4424                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4425                 return alloc;
4426         }
4427 }
4428
4429 static gboolean
4430 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4431 {
4432         int i;
4433         MonoGenericContainer *container;
4434         MonoGenericInst *ginst;
4435
4436         if (mono_class_is_ginst (klass)) {
4437                 container = mono_class_get_generic_container (mono_class_get_generic_class (klass)->container_class);
4438                 ginst = mono_class_get_generic_class (klass)->context.class_inst;
4439         } else if (mono_class_is_gtd (klass) && context_used) {
4440                 container = mono_class_get_generic_container (klass);
4441                 ginst = container->context.class_inst;
4442         } else {
4443                 return FALSE;
4444         }
4445
4446         for (i = 0; i < container->type_argc; ++i) {
4447                 MonoType *type;
4448                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4449                         continue;
4450                 type = ginst->type_argv [i];
4451                 if (mini_type_is_reference (type))
4452                         return TRUE;
4453         }
4454         return FALSE;
4455 }
4456
4457 static GHashTable* direct_icall_type_hash;
4458
4459 static gboolean
4460 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4461 {
4462         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4463         if (!direct_icalls_enabled (cfg))
4464                 return FALSE;
4465
4466         /*
4467          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4468          * Whitelist a few icalls for now.
4469          */
4470         if (!direct_icall_type_hash) {
4471                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4472
4473                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4474                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4475                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4476                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4477                 mono_memory_barrier ();
4478                 direct_icall_type_hash = h;
4479         }
4480
4481         if (cmethod->klass == mono_defaults.math_class)
4482                 return TRUE;
4483         /* No locking needed */
4484         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4485                 return TRUE;
4486         return FALSE;
4487 }
4488
4489 static gboolean
4490 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
4491 {
4492         if (cmethod->klass == mono_defaults.systemtype_class) {
4493                 if (!strcmp (cmethod->name, "GetType"))
4494                         return TRUE;
4495         }
4496         return FALSE;
4497 }
4498
4499 #define is_complex_isinst(klass) (mono_class_is_interface (klass) || klass->rank || mono_class_is_nullable (klass) || mono_class_is_marshalbyref (klass) || mono_class_is_sealed (klass) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
4500
4501 static MonoInst*
4502 emit_isinst_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4503 {
4504         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4505         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4506 }
4507
4508 static MonoInst*
4509 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4510 {
4511         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
4512         MonoInst *res;
4513
4514         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4515         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4516         reset_cast_details (cfg);
4517
4518         return res;
4519 }
4520
4521 static int
4522 get_castclass_cache_idx (MonoCompile *cfg)
4523 {
4524         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4525         cfg->castclass_cache_index ++;
4526         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4527 }
4528
4529
4530 static MonoInst*
4531 emit_isinst_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4532 {
4533         MonoInst *args [3];
4534         int idx;
4535
4536         args [0] = obj; /* obj */
4537         EMIT_NEW_CLASSCONST (cfg, args [1], klass); /* klass */
4538
4539         idx = get_castclass_cache_idx (cfg); /* inline cache*/
4540         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4541
4542         return emit_isinst_with_cache (cfg, klass, args);
4543 }
4544
4545 static MonoInst*
4546 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4547 {
4548         MonoInst *args [3];
4549         int idx;
4550
4551         /* obj */
4552         args [0] = obj;
4553
4554         /* klass */
4555         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4556
4557         /* inline cache*/
4558         idx = get_castclass_cache_idx (cfg);
4559         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4560
4561         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4562         return emit_castclass_with_cache (cfg, klass, args);
4563 }
4564
4565 /*
4566  * Returns NULL and set the cfg exception on error.
4567  */
4568 static MonoInst*
4569 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4570 {
4571         MonoBasicBlock *is_null_bb;
4572         int obj_reg = src->dreg;
4573         int vtable_reg = alloc_preg (cfg);
4574         MonoInst *klass_inst = NULL;
4575
4576         if (MONO_INS_IS_PCONST_NULL (src))
4577                 return src;
4578
4579         if (context_used) {
4580                 MonoInst *args [3];
4581
4582                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4583                         MonoInst *cache_ins;
4584
4585                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4586
4587                         /* obj */
4588                         args [0] = src;
4589
4590                         /* klass - it's the second element of the cache entry*/
4591                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4592
4593                         /* cache */
4594                         args [2] = cache_ins;
4595
4596                         return emit_castclass_with_cache (cfg, klass, args);
4597                 }
4598
4599                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4600         }
4601
4602         NEW_BBLOCK (cfg, is_null_bb);
4603
4604         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4605         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4606
4607         save_cast_details (cfg, klass, obj_reg, FALSE);
4608
4609         if (mono_class_is_interface (klass)) {
4610                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4611                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4612         } else {
4613                 int klass_reg = alloc_preg (cfg);
4614
4615                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4616
4617                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && mono_class_is_sealed (klass)) {
4618                         /* the remoting code is broken, access the class for now */
4619                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4620                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4621                                 if (!vt) {
4622                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4623                                         cfg->exception_ptr = klass;
4624                                         return NULL;
4625                                 }
4626                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4627                         } else {
4628                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4629                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4630                         }
4631                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4632                 } else {
4633                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4634                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4635                 }
4636         }
4637
4638         MONO_START_BB (cfg, is_null_bb);
4639
4640         reset_cast_details (cfg);
4641
4642         return src;
4643 }
4644
4645 /*
4646  * Returns NULL and set the cfg exception on error.
4647  */
4648 static MonoInst*
4649 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4650 {
4651         MonoInst *ins;
4652         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4653         int obj_reg = src->dreg;
4654         int vtable_reg = alloc_preg (cfg);
4655         int res_reg = alloc_ireg_ref (cfg);
4656         MonoInst *klass_inst = NULL;
4657
4658         if (context_used) {
4659                 MonoInst *args [3];
4660
4661                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4662                         MonoInst *cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4663
4664                         args [0] = src; /* obj */
4665
4666                         /* klass - it's the second element of the cache entry*/
4667                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4668
4669                         args [2] = cache_ins; /* cache */
4670                         return emit_isinst_with_cache (cfg, klass, args);
4671                 }
4672
4673                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4674         }
4675
4676         NEW_BBLOCK (cfg, is_null_bb);
4677         NEW_BBLOCK (cfg, false_bb);
4678         NEW_BBLOCK (cfg, end_bb);
4679
4680         /* Do the assignment at the beginning, so the other assignment can be if converted */
4681         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4682         ins->type = STACK_OBJ;
4683         ins->klass = klass;
4684
4685         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4686         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4687
4688         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4689
4690         if (mono_class_is_interface (klass)) {
4691                 g_assert (!context_used);
4692                 /* the is_null_bb target simply copies the input register to the output */
4693                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4694         } else {
4695                 int klass_reg = alloc_preg (cfg);
4696
4697                 if (klass->rank) {
4698                         int rank_reg = alloc_preg (cfg);
4699                         int eclass_reg = alloc_preg (cfg);
4700
4701                         g_assert (!context_used);
4702                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4703                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4704                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4705                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4706                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4707                         if (klass->cast_class == mono_defaults.object_class) {
4708                                 int parent_reg = alloc_preg (cfg);
4709                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4710                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4711                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4712                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4713                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4714                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4715                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4716                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4717                         } else if (klass->cast_class == mono_defaults.enum_class) {
4718                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4719                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4720                         } else if (mono_class_is_interface (klass->cast_class)) {
4721                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4722                         } else {
4723                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4724                                         /* Check that the object is a vector too */
4725                                         int bounds_reg = alloc_preg (cfg);
4726                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4727                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4728                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4729                                 }
4730
4731                                 /* the is_null_bb target simply copies the input register to the output */
4732                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4733                         }
4734                 } else if (mono_class_is_nullable (klass)) {
4735                         g_assert (!context_used);
4736                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4737                         /* the is_null_bb target simply copies the input register to the output */
4738                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4739                 } else {
4740                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && mono_class_is_sealed (klass)) {
4741                                 g_assert (!context_used);
4742                                 /* the remoting code is broken, access the class for now */
4743                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4744                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4745                                         if (!vt) {
4746                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4747                                                 cfg->exception_ptr = klass;
4748                                                 return NULL;
4749                                         }
4750                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4751                                 } else {
4752                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4753                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4754                                 }
4755                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4756                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4757                         } else {
4758                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4759                                 /* the is_null_bb target simply copies the input register to the output */
4760                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4761                         }
4762                 }
4763         }
4764
4765         MONO_START_BB (cfg, false_bb);
4766
4767         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4768         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4769
4770         MONO_START_BB (cfg, is_null_bb);
4771
4772         MONO_START_BB (cfg, end_bb);
4773
4774         return ins;
4775 }
4776
4777 static MonoInst*
4778 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4779 {
4780         /* This opcode takes as input an object reference and a class, and returns:
4781         0) if the object is an instance of the class,
4782         1) if the object is not instance of the class,
4783         2) if the object is a proxy whose type cannot be determined */
4784
4785         MonoInst *ins;
4786 #ifndef DISABLE_REMOTING
4787         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4788 #else
4789         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4790 #endif
4791         int obj_reg = src->dreg;
4792         int dreg = alloc_ireg (cfg);
4793         int tmp_reg;
4794 #ifndef DISABLE_REMOTING
4795         int klass_reg = alloc_preg (cfg);
4796 #endif
4797
4798         NEW_BBLOCK (cfg, true_bb);
4799         NEW_BBLOCK (cfg, false_bb);
4800         NEW_BBLOCK (cfg, end_bb);
4801 #ifndef DISABLE_REMOTING
4802         NEW_BBLOCK (cfg, false2_bb);
4803         NEW_BBLOCK (cfg, no_proxy_bb);
4804 #endif
4805
4806         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4807         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4808
4809         if (mono_class_is_interface (klass)) {
4810 #ifndef DISABLE_REMOTING
4811                 NEW_BBLOCK (cfg, interface_fail_bb);
4812 #endif
4813
4814                 tmp_reg = alloc_preg (cfg);
4815                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4816 #ifndef DISABLE_REMOTING
4817                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4818                 MONO_START_BB (cfg, interface_fail_bb);
4819                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4820
4821                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4822
4823                 tmp_reg = alloc_preg (cfg);
4824                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4825                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4826                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4827 #else
4828                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4829 #endif
4830         } else {
4831 #ifndef DISABLE_REMOTING
4832                 tmp_reg = alloc_preg (cfg);
4833                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4834                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4835
4836                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4837                 tmp_reg = alloc_preg (cfg);
4838                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4839                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4840
4841                 tmp_reg = alloc_preg (cfg);
4842                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4843                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4844                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4845
4846                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4847                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4848
4849                 MONO_START_BB (cfg, no_proxy_bb);
4850
4851                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4852 #else
4853                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4854 #endif
4855         }
4856
4857         MONO_START_BB (cfg, false_bb);
4858
4859         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4860         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4861
4862 #ifndef DISABLE_REMOTING
4863         MONO_START_BB (cfg, false2_bb);
4864
4865         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4866         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4867 #endif
4868
4869         MONO_START_BB (cfg, true_bb);
4870
4871         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4872
4873         MONO_START_BB (cfg, end_bb);
4874
4875         /* FIXME: */
4876         MONO_INST_NEW (cfg, ins, OP_ICONST);
4877         ins->dreg = dreg;
4878         ins->type = STACK_I4;
4879
4880         return ins;
4881 }
4882
4883 static MonoInst*
4884 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4885 {
4886         /* This opcode takes as input an object reference and a class, and returns:
4887         0) if the object is an instance of the class,
4888         1) if the object is a proxy whose type cannot be determined
4889         an InvalidCastException exception is thrown otherwhise*/
4890
4891         MonoInst *ins;
4892 #ifndef DISABLE_REMOTING
4893         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4894 #else
4895         MonoBasicBlock *ok_result_bb;
4896 #endif
4897         int obj_reg = src->dreg;
4898         int dreg = alloc_ireg (cfg);
4899         int tmp_reg = alloc_preg (cfg);
4900
4901 #ifndef DISABLE_REMOTING
4902         int klass_reg = alloc_preg (cfg);
4903         NEW_BBLOCK (cfg, end_bb);
4904 #endif
4905
4906         NEW_BBLOCK (cfg, ok_result_bb);
4907
4908         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4909         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4910
4911         save_cast_details (cfg, klass, obj_reg, FALSE);
4912
4913         if (mono_class_is_interface (klass)) {
4914 #ifndef DISABLE_REMOTING
4915                 NEW_BBLOCK (cfg, interface_fail_bb);
4916
4917                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4918                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4919                 MONO_START_BB (cfg, interface_fail_bb);
4920                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4921
4922                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4923
4924                 tmp_reg = alloc_preg (cfg);
4925                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4926                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4927                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4928
4929                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4930                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4931 #else
4932                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4933                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4934                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4935 #endif
4936         } else {
4937 #ifndef DISABLE_REMOTING
4938                 NEW_BBLOCK (cfg, no_proxy_bb);
4939
4940                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4941                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4942                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4943
4944                 tmp_reg = alloc_preg (cfg);
4945                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4946                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4947
4948                 tmp_reg = alloc_preg (cfg);
4949                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4950                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4951                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4952
4953                 NEW_BBLOCK (cfg, fail_1_bb);
4954
4955                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4956
4957                 MONO_START_BB (cfg, fail_1_bb);
4958
4959                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4960                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4961
4962                 MONO_START_BB (cfg, no_proxy_bb);
4963
4964                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4965 #else
4966                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4967 #endif
4968         }
4969
4970         MONO_START_BB (cfg, ok_result_bb);
4971
4972         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4973
4974 #ifndef DISABLE_REMOTING
4975         MONO_START_BB (cfg, end_bb);
4976 #endif
4977
4978         /* FIXME: */
4979         MONO_INST_NEW (cfg, ins, OP_ICONST);
4980         ins->dreg = dreg;
4981         ins->type = STACK_I4;
4982
4983         return ins;
4984 }
4985
4986 static G_GNUC_UNUSED MonoInst*
4987 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4988 {
4989         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4990         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4991         gboolean is_i4;
4992
4993         switch (enum_type->type) {
4994         case MONO_TYPE_I8:
4995         case MONO_TYPE_U8:
4996 #if SIZEOF_REGISTER == 8
4997         case MONO_TYPE_I:
4998         case MONO_TYPE_U:
4999 #endif
5000                 is_i4 = FALSE;
5001                 break;
5002         default:
5003                 is_i4 = TRUE;
5004                 break;
5005         }
5006
5007         {
5008                 MonoInst *load, *and_, *cmp, *ceq;
5009                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5010                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5011                 int dest_reg = alloc_ireg (cfg);
5012
5013                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5014                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5015                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5016                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5017
5018                 ceq->type = STACK_I4;
5019
5020                 if (!is_i4) {
5021                         load = mono_decompose_opcode (cfg, load);
5022                         and_ = mono_decompose_opcode (cfg, and_);
5023                         cmp = mono_decompose_opcode (cfg, cmp);
5024                         ceq = mono_decompose_opcode (cfg, ceq);
5025                 }
5026
5027                 return ceq;
5028         }
5029 }
5030
5031 /*
5032  * Returns NULL and set the cfg exception on error.
5033  */
5034 static G_GNUC_UNUSED MonoInst*
5035 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5036 {
5037         MonoInst *ptr;
5038         int dreg;
5039         gpointer trampoline;
5040         MonoInst *obj, *method_ins, *tramp_ins;
5041         MonoDomain *domain;
5042         guint8 **code_slot;
5043
5044         if (virtual_ && !cfg->llvm_only) {
5045                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5046                 g_assert (invoke);
5047
5048                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5049                         return NULL;
5050         }
5051
5052         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5053         if (!obj)
5054                 return NULL;
5055
5056         /* Inline the contents of mono_delegate_ctor */
5057
5058         /* Set target field */
5059         /* Optimize away setting of NULL target */
5060         if (!MONO_INS_IS_PCONST_NULL (target)) {
5061                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5062                 if (cfg->gen_write_barriers) {
5063                         dreg = alloc_preg (cfg);
5064                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5065                         emit_write_barrier (cfg, ptr, target);
5066                 }
5067         }
5068
5069         /* Set method field */
5070         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5071         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5072
5073         /*
5074          * To avoid looking up the compiled code belonging to the target method
5075          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5076          * store it, and we fill it after the method has been compiled.
5077          */
5078         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5079                 MonoInst *code_slot_ins;
5080
5081                 if (context_used) {
5082                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5083                 } else {
5084                         domain = mono_domain_get ();
5085                         mono_domain_lock (domain);
5086                         if (!domain_jit_info (domain)->method_code_hash)
5087                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5088                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5089                         if (!code_slot) {
5090                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5091                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5092                         }
5093                         mono_domain_unlock (domain);
5094
5095                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5096                 }
5097                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5098         }
5099
5100         if (cfg->llvm_only) {
5101                 MonoInst *args [16];
5102
5103                 if (virtual_) {
5104                         args [0] = obj;
5105                         args [1] = target;
5106                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5107                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5108                 } else {
5109                         args [0] = obj;
5110                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5111                 }
5112
5113                 return obj;
5114         }
5115
5116         if (cfg->compile_aot) {
5117                 MonoDelegateClassMethodPair *del_tramp;
5118
5119                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5120                 del_tramp->klass = klass;
5121                 del_tramp->method = context_used ? NULL : method;
5122                 del_tramp->is_virtual = virtual_;
5123                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5124         } else {
5125                 if (virtual_)
5126                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5127                 else
5128                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5129                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5130         }
5131
5132         /* Set invoke_impl field */
5133         if (virtual_) {
5134                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5135         } else {
5136                 dreg = alloc_preg (cfg);
5137                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5138                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5139
5140                 dreg = alloc_preg (cfg);
5141                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5142                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5143         }
5144
5145         dreg = alloc_preg (cfg);
5146         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5147         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5148
5149         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5150
5151         return obj;
5152 }
5153
5154 static MonoInst*
5155 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5156 {
5157         MonoJitICallInfo *info;
5158
5159         /* Need to register the icall so it gets an icall wrapper */
5160         info = mono_get_array_new_va_icall (rank);
5161
5162         cfg->flags |= MONO_CFG_HAS_VARARGS;
5163
5164         /* mono_array_new_va () needs a vararg calling convention */
5165         cfg->exception_message = g_strdup ("array-new");
5166         cfg->disable_llvm = TRUE;
5167
5168         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5169         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5170 }
5171
5172 /*
5173  * handle_constrained_gsharedvt_call:
5174  *
5175  *   Handle constrained calls where the receiver is a gsharedvt type.
5176  * Return the instruction representing the call. Set the cfg exception on failure.
5177  */
5178 static MonoInst*
5179 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5180                                                                    gboolean *ref_emit_widen)
5181 {
5182         MonoInst *ins = NULL;
5183         gboolean emit_widen = *ref_emit_widen;
5184
5185         /*
5186          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5187          * This is hard to do with the current call code, since we would have to emit a branch and two different calls. So instead, we
5188          * pack the arguments into an array, and do the rest of the work in in an icall.
5189          */
5190         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5191                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (fsig->ret)) &&
5192                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
5193                 MonoInst *args [16];
5194
5195                 /*
5196                  * This case handles calls to
5197                  * - object:ToString()/Equals()/GetHashCode(),
5198                  * - System.IComparable<T>:CompareTo()
5199                  * - System.IEquatable<T>:Equals ()
5200                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5201                  */
5202
5203                 args [0] = sp [0];
5204                 if (mono_method_check_context_used (cmethod))
5205                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5206                 else
5207                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5208                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5209
5210                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5211                 if (fsig->hasthis && fsig->param_count) {
5212                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5213                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5214                         ins->dreg = alloc_preg (cfg);
5215                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5216                         MONO_ADD_INS (cfg->cbb, ins);
5217                         args [4] = ins;
5218
5219                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5220                                 int addr_reg, deref_arg_reg;
5221
5222                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5223                                 deref_arg_reg = alloc_preg (cfg);
5224                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5225                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5226
5227                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5228                                 addr_reg = ins->dreg;
5229                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5230                         } else {
5231                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5232                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5233                         }
5234                 } else {
5235                         EMIT_NEW_ICONST (cfg, args [3], 0);
5236                         EMIT_NEW_ICONST (cfg, args [4], 0);
5237                 }
5238                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5239                 emit_widen = FALSE;
5240
5241                 if (mini_is_gsharedvt_type (fsig->ret)) {
5242                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5243                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5244                         MonoInst *add;
5245
5246                         /* Unbox */
5247                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5248                         MONO_ADD_INS (cfg->cbb, add);
5249                         /* Load value */
5250                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5251                         MONO_ADD_INS (cfg->cbb, ins);
5252                         /* ins represents the call result */
5253                 }
5254         } else {
5255                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5256         }
5257
5258         *ref_emit_widen = emit_widen;
5259
5260         return ins;
5261
5262  exception_exit:
5263         return NULL;
5264 }
5265
5266 static void
5267 mono_emit_load_got_addr (MonoCompile *cfg)
5268 {
5269         MonoInst *getaddr, *dummy_use;
5270
5271         if (!cfg->got_var || cfg->got_var_allocated)
5272                 return;
5273
5274         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5275         getaddr->cil_code = cfg->header->code;
5276         getaddr->dreg = cfg->got_var->dreg;
5277
5278         /* Add it to the start of the first bblock */
5279         if (cfg->bb_entry->code) {
5280                 getaddr->next = cfg->bb_entry->code;
5281                 cfg->bb_entry->code = getaddr;
5282         }
5283         else
5284                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5285
5286         cfg->got_var_allocated = TRUE;
5287
5288         /*
5289          * Add a dummy use to keep the got_var alive, since real uses might
5290          * only be generated by the back ends.
5291          * Add it to end_bblock, so the variable's lifetime covers the whole
5292          * method.
5293          * It would be better to make the usage of the got var explicit in all
5294          * cases when the backend needs it (i.e. calls, throw etc.), so this
5295          * wouldn't be needed.
5296          */
5297         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5298         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5299 }
5300
5301 static int inline_limit;
5302 static gboolean inline_limit_inited;
5303
5304 static gboolean
5305 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5306 {
5307         MonoMethodHeaderSummary header;
5308         MonoVTable *vtable;
5309 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5310         MonoMethodSignature *sig = mono_method_signature (method);
5311         int i;
5312 #endif
5313
5314         if (cfg->disable_inline)
5315                 return FALSE;
5316         if (cfg->gshared)
5317                 return FALSE;
5318
5319         if (cfg->inline_depth > 10)
5320                 return FALSE;
5321
5322         if (!mono_method_get_header_summary (method, &header))
5323                 return FALSE;
5324
5325         /*runtime, icall and pinvoke are checked by summary call*/
5326         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5327             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5328             (mono_class_is_marshalbyref (method->klass)) ||
5329             header.has_clauses)
5330                 return FALSE;
5331
5332         /* also consider num_locals? */
5333         /* Do the size check early to avoid creating vtables */
5334         if (!inline_limit_inited) {
5335                 if (g_getenv ("MONO_INLINELIMIT"))
5336                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5337                 else
5338                         inline_limit = INLINE_LENGTH_LIMIT;
5339                 inline_limit_inited = TRUE;
5340         }
5341         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5342                 return FALSE;
5343
5344         /*
5345          * if we can initialize the class of the method right away, we do,
5346          * otherwise we don't allow inlining if the class needs initialization,
5347          * since it would mean inserting a call to mono_runtime_class_init()
5348          * inside the inlined code
5349          */
5350         if (!(cfg->opt & MONO_OPT_SHARED)) {
5351                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5352                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5353                         vtable = mono_class_vtable (cfg->domain, method->klass);
5354                         if (!vtable)
5355                                 return FALSE;
5356                         if (!cfg->compile_aot) {
5357                                 MonoError error;
5358                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5359                                         mono_error_cleanup (&error);
5360                                         return FALSE;
5361                                 }
5362                         }
5363                 } else if (mono_class_is_before_field_init (method->klass)) {
5364                         if (cfg->run_cctors && method->klass->has_cctor) {
5365                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5366                                 if (!method->klass->runtime_info)
5367                                         /* No vtable created yet */
5368                                         return FALSE;
5369                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5370                                 if (!vtable)
5371                                         return FALSE;
5372                                 /* This makes so that inline cannot trigger */
5373                                 /* .cctors: too many apps depend on them */
5374                                 /* running with a specific order... */
5375                                 if (! vtable->initialized)
5376                                         return FALSE;
5377                                 MonoError error;
5378                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5379                                         mono_error_cleanup (&error);
5380                                         return FALSE;
5381                                 }
5382                         }
5383                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5384                         if (!method->klass->runtime_info)
5385                                 /* No vtable created yet */
5386                                 return FALSE;
5387                         vtable = mono_class_vtable (cfg->domain, method->klass);
5388                         if (!vtable)
5389                                 return FALSE;
5390                         if (!vtable->initialized)
5391                                 return FALSE;
5392                 }
5393         } else {
5394                 /*
5395                  * If we're compiling for shared code
5396                  * the cctor will need to be run at aot method load time, for example,
5397                  * or at the end of the compilation of the inlining method.
5398                  */
5399                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
5400                         return FALSE;
5401         }
5402
5403 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5404         if (mono_arch_is_soft_float ()) {
5405                 /* FIXME: */
5406                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5407                         return FALSE;
5408                 for (i = 0; i < sig->param_count; ++i)
5409                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5410                                 return FALSE;
5411         }
5412 #endif
5413
5414         if (g_list_find (cfg->dont_inline, method))
5415                 return FALSE;
5416
5417         return TRUE;
5418 }
5419
5420 static gboolean
5421 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5422 {
5423         if (!cfg->compile_aot) {
5424                 g_assert (vtable);
5425                 if (vtable->initialized)
5426                         return FALSE;
5427         }
5428
5429         if (mono_class_is_before_field_init (klass)) {
5430                 if (cfg->method == method)
5431                         return FALSE;
5432         }
5433
5434         if (!mono_class_needs_cctor_run (klass, method))
5435                 return FALSE;
5436
5437         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5438                 /* The initialization is already done before the method is called */
5439                 return FALSE;
5440
5441         return TRUE;
5442 }
5443
5444 static MonoInst*
5445 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5446 {
5447         MonoInst *ins;
5448         guint32 size;
5449         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5450         int context_used;
5451
5452         if (mini_is_gsharedvt_variable_klass (klass)) {
5453                 size = -1;
5454         } else {
5455                 mono_class_init (klass);
5456                 size = mono_class_array_element_size (klass);
5457         }
5458
5459         mult_reg = alloc_preg (cfg);
5460         array_reg = arr->dreg;
5461         index_reg = index->dreg;
5462
5463 #if SIZEOF_REGISTER == 8
5464         /* The array reg is 64 bits but the index reg is only 32 */
5465         if (COMPILE_LLVM (cfg)) {
5466                 /* Not needed */
5467                 index2_reg = index_reg;
5468         } else {
5469                 index2_reg = alloc_preg (cfg);
5470                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5471         }
5472 #else
5473         if (index->type == STACK_I8) {
5474                 index2_reg = alloc_preg (cfg);
5475                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5476         } else {
5477                 index2_reg = index_reg;
5478         }
5479 #endif
5480
5481         if (bcheck)
5482                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5483
5484 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5485         if (size == 1 || size == 2 || size == 4 || size == 8) {
5486                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5487
5488                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5489                 ins->klass = mono_class_get_element_class (klass);
5490                 ins->type = STACK_MP;
5491
5492                 return ins;
5493         }
5494 #endif
5495
5496         add_reg = alloc_ireg_mp (cfg);
5497
5498         if (size == -1) {
5499                 MonoInst *rgctx_ins;
5500
5501                 /* gsharedvt */
5502                 g_assert (cfg->gshared);
5503                 context_used = mini_class_check_context_used (cfg, klass);
5504                 g_assert (context_used);
5505                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5506                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5507         } else {
5508                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5509         }
5510         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5511         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5512         ins->klass = mono_class_get_element_class (klass);
5513         ins->type = STACK_MP;
5514         MONO_ADD_INS (cfg->cbb, ins);
5515
5516         return ins;
5517 }
5518
5519 static MonoInst*
5520 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5521 {
5522         int bounds_reg = alloc_preg (cfg);
5523         int add_reg = alloc_ireg_mp (cfg);
5524         int mult_reg = alloc_preg (cfg);
5525         int mult2_reg = alloc_preg (cfg);
5526         int low1_reg = alloc_preg (cfg);
5527         int low2_reg = alloc_preg (cfg);
5528         int high1_reg = alloc_preg (cfg);
5529         int high2_reg = alloc_preg (cfg);
5530         int realidx1_reg = alloc_preg (cfg);
5531         int realidx2_reg = alloc_preg (cfg);
5532         int sum_reg = alloc_preg (cfg);
5533         int index1, index2, tmpreg;
5534         MonoInst *ins;
5535         guint32 size;
5536
5537         mono_class_init (klass);
5538         size = mono_class_array_element_size (klass);
5539
5540         index1 = index_ins1->dreg;
5541         index2 = index_ins2->dreg;
5542
5543 #if SIZEOF_REGISTER == 8
5544         /* The array reg is 64 bits but the index reg is only 32 */
5545         if (COMPILE_LLVM (cfg)) {
5546                 /* Not needed */
5547         } else {
5548                 tmpreg = alloc_preg (cfg);
5549                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5550                 index1 = tmpreg;
5551                 tmpreg = alloc_preg (cfg);
5552                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5553                 index2 = tmpreg;
5554         }
5555 #else
5556         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5557         tmpreg = -1;
5558 #endif
5559
5560         /* range checking */
5561         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5562                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5563
5564         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5565                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5566         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5567         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5568                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5569         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5570         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5571
5572         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5573                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5574         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5575         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5576                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5577         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5578         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5579
5580         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5581         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5582         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5583         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5584         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5585
5586         ins->type = STACK_MP;
5587         ins->klass = klass;
5588         MONO_ADD_INS (cfg->cbb, ins);
5589
5590         return ins;
5591 }
5592
5593 static MonoInst*
5594 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5595 {
5596         int rank;
5597         MonoInst *addr;
5598         MonoMethod *addr_method;
5599         int element_size;
5600         MonoClass *eclass = cmethod->klass->element_class;
5601
5602         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5603
5604         if (rank == 1)
5605                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5606
5607         /* emit_ldelema_2 depends on OP_LMUL */
5608         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5609                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5610         }
5611
5612         if (mini_is_gsharedvt_variable_klass (eclass))
5613                 element_size = 0;
5614         else
5615                 element_size = mono_class_array_element_size (eclass);
5616         addr_method = mono_marshal_get_array_address (rank, element_size);
5617         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5618
5619         return addr;
5620 }
5621
5622 static MonoBreakPolicy
5623 always_insert_breakpoint (MonoMethod *method)
5624 {
5625         return MONO_BREAK_POLICY_ALWAYS;
5626 }
5627
5628 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5629
5630 /**
5631  * mono_set_break_policy:
5632  * policy_callback: the new callback function
5633  *
5634  * Allow embedders to decide wherther to actually obey breakpoint instructions
5635  * (both break IL instructions and Debugger.Break () method calls), for example
5636  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5637  * untrusted or semi-trusted code.
5638  *
5639  * @policy_callback will be called every time a break point instruction needs to
5640  * be inserted with the method argument being the method that calls Debugger.Break()
5641  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5642  * if it wants the breakpoint to not be effective in the given method.
5643  * #MONO_BREAK_POLICY_ALWAYS is the default.
5644  */
5645 void
5646 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5647 {
5648         if (policy_callback)
5649                 break_policy_func = policy_callback;
5650         else
5651                 break_policy_func = always_insert_breakpoint;
5652 }
5653
5654 static gboolean
5655 should_insert_brekpoint (MonoMethod *method) {
5656         switch (break_policy_func (method)) {
5657         case MONO_BREAK_POLICY_ALWAYS:
5658                 return TRUE;
5659         case MONO_BREAK_POLICY_NEVER:
5660                 return FALSE;
5661         case MONO_BREAK_POLICY_ON_DBG:
5662                 g_warning ("mdb no longer supported");
5663                 return FALSE;
5664         default:
5665                 g_warning ("Incorrect value returned from break policy callback");
5666                 return FALSE;
5667         }
5668 }
5669
5670 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5671 static MonoInst*
5672 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5673 {
5674         MonoInst *addr, *store, *load;
5675         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5676
5677         /* the bounds check is already done by the callers */
5678         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5679         if (is_set) {
5680                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5681                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5682                 if (mini_type_is_reference (&eklass->byval_arg))
5683                         emit_write_barrier (cfg, addr, load);
5684         } else {
5685                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5686                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5687         }
5688         return store;
5689 }
5690
5691
5692 static gboolean
5693 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5694 {
5695         return mini_type_is_reference (&klass->byval_arg);
5696 }
5697
5698 static MonoInst*
5699 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5700 {
5701         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5702                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
5703                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5704                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5705                 MonoInst *iargs [3];
5706
5707                 if (!helper->slot)
5708                         mono_class_setup_vtable (obj_array);
5709                 g_assert (helper->slot);
5710
5711                 if (sp [0]->type != STACK_OBJ)
5712                         return NULL;
5713                 if (sp [2]->type != STACK_OBJ)
5714                         return NULL;
5715
5716                 iargs [2] = sp [2];
5717                 iargs [1] = sp [1];
5718                 iargs [0] = sp [0];
5719
5720                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5721         } else {
5722                 MonoInst *ins;
5723
5724                 if (mini_is_gsharedvt_variable_klass (klass)) {
5725                         MonoInst *addr;
5726
5727                         // FIXME-VT: OP_ICONST optimization
5728                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5729                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5730                         ins->opcode = OP_STOREV_MEMBASE;
5731                 } else if (sp [1]->opcode == OP_ICONST) {
5732                         int array_reg = sp [0]->dreg;
5733                         int index_reg = sp [1]->dreg;
5734                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5735
5736                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5737                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5738
5739                         if (safety_checks)
5740                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5741                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5742                 } else {
5743                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5744                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5745                         if (generic_class_is_reference_type (cfg, klass))
5746                                 emit_write_barrier (cfg, addr, sp [2]);
5747                 }
5748                 return ins;
5749         }
5750 }
5751
5752 static MonoInst*
5753 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5754 {
5755         MonoClass *eklass;
5756
5757         if (is_set)
5758                 eklass = mono_class_from_mono_type (fsig->params [2]);
5759         else
5760                 eklass = mono_class_from_mono_type (fsig->ret);
5761
5762         if (is_set) {
5763                 return emit_array_store (cfg, eklass, args, FALSE);
5764         } else {
5765                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5766                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5767                 return ins;
5768         }
5769 }
5770
5771 static gboolean
5772 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5773 {
5774         uint32_t align;
5775         int param_size, return_size;
5776
5777         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5778         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5779
5780         if (cfg->verbose_level > 3)
5781                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5782
5783         //Don't allow mixing reference types with value types
5784         if (param_klass->valuetype != return_klass->valuetype) {
5785                 if (cfg->verbose_level > 3)
5786                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5787                 return FALSE;
5788         }
5789
5790         if (!param_klass->valuetype) {
5791                 if (cfg->verbose_level > 3)
5792                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5793                 return TRUE;
5794         }
5795
5796         //That are blitable
5797         if (param_klass->has_references || return_klass->has_references)
5798                 return FALSE;
5799
5800         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5801         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5802                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5803                         if (cfg->verbose_level > 3)
5804                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5805                 return FALSE;
5806         }
5807
5808         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5809                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5810                 if (cfg->verbose_level > 3)
5811                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5812                 return FALSE;
5813         }
5814
5815         param_size = mono_class_value_size (param_klass, &align);
5816         return_size = mono_class_value_size (return_klass, &align);
5817
5818         //We can do it if sizes match
5819         if (param_size == return_size) {
5820                 if (cfg->verbose_level > 3)
5821                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5822                 return TRUE;
5823         }
5824
5825         //No simple way to handle struct if sizes don't match
5826         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5827                 if (cfg->verbose_level > 3)
5828                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5829                 return FALSE;
5830         }
5831
5832         /*
5833          * Same reg size category.
5834          * A quick note on why we don't require widening here.
5835          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5836          *
5837          * Since the source value comes from a function argument, the JIT will already have
5838          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5839          */
5840         if (param_size <= 4 && return_size <= 4) {
5841                 if (cfg->verbose_level > 3)
5842                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5843                 return TRUE;
5844         }
5845
5846         return FALSE;
5847 }
5848
5849 static MonoInst*
5850 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5851 {
5852         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5853         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5854
5855         if (mini_is_gsharedvt_variable_type (fsig->ret))
5856                 return NULL;
5857
5858         //Valuetypes that are semantically equivalent or numbers than can be widened to
5859         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5860                 return args [0];
5861
5862         //Arrays of valuetypes that are semantically equivalent
5863         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5864                 return args [0];
5865
5866         return NULL;
5867 }
5868
5869 static MonoInst*
5870 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5871 {
5872 #ifdef MONO_ARCH_SIMD_INTRINSICS
5873         MonoInst *ins = NULL;
5874
5875         if (cfg->opt & MONO_OPT_SIMD) {
5876                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5877                 if (ins)
5878                         return ins;
5879         }
5880 #endif
5881
5882         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5883 }
5884
5885 static MonoInst*
5886 emit_memory_barrier (MonoCompile *cfg, int kind)
5887 {
5888         MonoInst *ins = NULL;
5889         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5890         MONO_ADD_INS (cfg->cbb, ins);
5891         ins->backend.memory_barrier_kind = kind;
5892
5893         return ins;
5894 }
5895
5896 static MonoInst*
5897 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5898 {
5899         MonoInst *ins = NULL;
5900         int opcode = 0;
5901
5902         /* The LLVM backend supports these intrinsics */
5903         if (cmethod->klass == mono_defaults.math_class) {
5904                 if (strcmp (cmethod->name, "Sin") == 0) {
5905                         opcode = OP_SIN;
5906                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5907                         opcode = OP_COS;
5908                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5909                         opcode = OP_SQRT;
5910                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5911                         opcode = OP_ABS;
5912                 }
5913
5914                 if (opcode && fsig->param_count == 1) {
5915                         MONO_INST_NEW (cfg, ins, opcode);
5916                         ins->type = STACK_R8;
5917                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5918                         ins->sreg1 = args [0]->dreg;
5919                         MONO_ADD_INS (cfg->cbb, ins);
5920                 }
5921
5922                 opcode = 0;
5923                 if (cfg->opt & MONO_OPT_CMOV) {
5924                         if (strcmp (cmethod->name, "Min") == 0) {
5925                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5926                                         opcode = OP_IMIN;
5927                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5928                                         opcode = OP_IMIN_UN;
5929                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5930                                         opcode = OP_LMIN;
5931                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5932                                         opcode = OP_LMIN_UN;
5933                         } else if (strcmp (cmethod->name, "Max") == 0) {
5934                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5935                                         opcode = OP_IMAX;
5936                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5937                                         opcode = OP_IMAX_UN;
5938                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5939                                         opcode = OP_LMAX;
5940                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5941                                         opcode = OP_LMAX_UN;
5942                         }
5943                 }
5944
5945                 if (opcode && fsig->param_count == 2) {
5946                         MONO_INST_NEW (cfg, ins, opcode);
5947                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5948                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5949                         ins->sreg1 = args [0]->dreg;
5950                         ins->sreg2 = args [1]->dreg;
5951                         MONO_ADD_INS (cfg->cbb, ins);
5952                 }
5953         }
5954
5955         return ins;
5956 }
5957
5958 static MonoInst*
5959 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5960 {
5961         if (cmethod->klass == mono_defaults.array_class) {
5962                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5963                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5964                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5965                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5966                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5967                         return emit_array_unsafe_mov (cfg, fsig, args);
5968         }
5969
5970         return NULL;
5971 }
5972
5973 static MonoInst*
5974 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5975 {
5976         MonoInst *ins = NULL;
5977
5978          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5979
5980         if (cmethod->klass == mono_defaults.string_class) {
5981                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5982                         int dreg = alloc_ireg (cfg);
5983                         int index_reg = alloc_preg (cfg);
5984                         int add_reg = alloc_preg (cfg);
5985
5986 #if SIZEOF_REGISTER == 8
5987                         if (COMPILE_LLVM (cfg)) {
5988                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5989                         } else {
5990                                 /* The array reg is 64 bits but the index reg is only 32 */
5991                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5992                         }
5993 #else
5994                         index_reg = args [1]->dreg;
5995 #endif
5996                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5997
5998 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5999                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
6000                         add_reg = ins->dreg;
6001                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
6002                                                                    add_reg, 0);
6003 #else
6004                         int mult_reg = alloc_preg (cfg);
6005                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
6006                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
6007                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
6008                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
6009 #endif
6010                         type_from_op (cfg, ins, NULL, NULL);
6011                         return ins;
6012                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6013                         int dreg = alloc_ireg (cfg);
6014                         /* Decompose later to allow more optimizations */
6015                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6016                         ins->type = STACK_I4;
6017                         ins->flags |= MONO_INST_FAULT;
6018                         cfg->cbb->has_array_access = TRUE;
6019                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6020
6021                         return ins;
6022                 } else
6023                         return NULL;
6024         } else if (cmethod->klass == mono_defaults.object_class) {
6025                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6026                         int dreg = alloc_ireg_ref (cfg);
6027                         int vt_reg = alloc_preg (cfg);
6028                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6029                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6030                         type_from_op (cfg, ins, NULL, NULL);
6031
6032                         return ins;
6033                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6034                         int dreg = alloc_ireg (cfg);
6035                         int t1 = alloc_ireg (cfg);
6036
6037                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6038                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6039                         ins->type = STACK_I4;
6040
6041                         return ins;
6042                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6043                         MONO_INST_NEW (cfg, ins, OP_NOP);
6044                         MONO_ADD_INS (cfg->cbb, ins);
6045                         return ins;
6046                 } else
6047                         return NULL;
6048         } else if (cmethod->klass == mono_defaults.array_class) {
6049                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6050                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6051                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6052                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6053
6054 #ifndef MONO_BIG_ARRAYS
6055                 /*
6056                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6057                  * Array methods.
6058                  */
6059                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6060                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6061                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6062                         int dreg = alloc_ireg (cfg);
6063                         int bounds_reg = alloc_ireg_mp (cfg);
6064                         MonoBasicBlock *end_bb, *szarray_bb;
6065                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6066
6067                         NEW_BBLOCK (cfg, end_bb);
6068                         NEW_BBLOCK (cfg, szarray_bb);
6069
6070                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6071                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6072                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6073                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6074                         /* Non-szarray case */
6075                         if (get_length)
6076                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6077                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6078                         else
6079                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6080                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6081                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6082                         MONO_START_BB (cfg, szarray_bb);
6083                         /* Szarray case */
6084                         if (get_length)
6085                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6086                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6087                         else
6088                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6089                         MONO_START_BB (cfg, end_bb);
6090
6091                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6092                         ins->type = STACK_I4;
6093
6094                         return ins;
6095                 }
6096 #endif
6097
6098                 if (cmethod->name [0] != 'g')
6099                         return NULL;
6100
6101                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6102                         int dreg = alloc_ireg (cfg);
6103                         int vtable_reg = alloc_preg (cfg);
6104                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6105                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6106                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6107                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6108                         type_from_op (cfg, ins, NULL, NULL);
6109
6110                         return ins;
6111                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6112                         int dreg = alloc_ireg (cfg);
6113
6114                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6115                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6116                         type_from_op (cfg, ins, NULL, NULL);
6117
6118                         return ins;
6119                 } else
6120                         return NULL;
6121         } else if (cmethod->klass == runtime_helpers_class) {
6122                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6123                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6124                         return ins;
6125                 } else
6126                         return NULL;
6127         } else if (cmethod->klass == mono_defaults.monitor_class) {
6128                 gboolean is_enter = FALSE;
6129                 gboolean is_v4 = FALSE;
6130
6131                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
6132                         is_enter = TRUE;
6133                         is_v4 = TRUE;
6134                 }
6135                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
6136                         is_enter = TRUE;
6137
6138                 if (is_enter) {
6139                         /*
6140                          * To make async stack traces work, icalls which can block should have a wrapper.
6141                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6142                          */
6143                         MonoBasicBlock *end_bb;
6144
6145                         NEW_BBLOCK (cfg, end_bb);
6146
6147                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
6148                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6149                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6150                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4 : (gpointer)mono_monitor_enter, args);
6151                         MONO_START_BB (cfg, end_bb);
6152                         return ins;
6153                 }
6154         } else if (cmethod->klass == mono_defaults.thread_class) {
6155                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6156                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6157                         MONO_ADD_INS (cfg->cbb, ins);
6158                         return ins;
6159                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6160                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6161                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6162                         guint32 opcode = 0;
6163                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6164
6165                         if (fsig->params [0]->type == MONO_TYPE_I1)
6166                                 opcode = OP_LOADI1_MEMBASE;
6167                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6168                                 opcode = OP_LOADU1_MEMBASE;
6169                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6170                                 opcode = OP_LOADI2_MEMBASE;
6171                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6172                                 opcode = OP_LOADU2_MEMBASE;
6173                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6174                                 opcode = OP_LOADI4_MEMBASE;
6175                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6176                                 opcode = OP_LOADU4_MEMBASE;
6177                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6178                                 opcode = OP_LOADI8_MEMBASE;
6179                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6180                                 opcode = OP_LOADR4_MEMBASE;
6181                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6182                                 opcode = OP_LOADR8_MEMBASE;
6183                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6184                                 opcode = OP_LOAD_MEMBASE;
6185
6186                         if (opcode) {
6187                                 MONO_INST_NEW (cfg, ins, opcode);
6188                                 ins->inst_basereg = args [0]->dreg;
6189                                 ins->inst_offset = 0;
6190                                 MONO_ADD_INS (cfg->cbb, ins);
6191
6192                                 switch (fsig->params [0]->type) {
6193                                 case MONO_TYPE_I1:
6194                                 case MONO_TYPE_U1:
6195                                 case MONO_TYPE_I2:
6196                                 case MONO_TYPE_U2:
6197                                 case MONO_TYPE_I4:
6198                                 case MONO_TYPE_U4:
6199                                         ins->dreg = mono_alloc_ireg (cfg);
6200                                         ins->type = STACK_I4;
6201                                         break;
6202                                 case MONO_TYPE_I8:
6203                                 case MONO_TYPE_U8:
6204                                         ins->dreg = mono_alloc_lreg (cfg);
6205                                         ins->type = STACK_I8;
6206                                         break;
6207                                 case MONO_TYPE_I:
6208                                 case MONO_TYPE_U:
6209                                         ins->dreg = mono_alloc_ireg (cfg);
6210 #if SIZEOF_REGISTER == 8
6211                                         ins->type = STACK_I8;
6212 #else
6213                                         ins->type = STACK_I4;
6214 #endif
6215                                         break;
6216                                 case MONO_TYPE_R4:
6217                                 case MONO_TYPE_R8:
6218                                         ins->dreg = mono_alloc_freg (cfg);
6219                                         ins->type = STACK_R8;
6220                                         break;
6221                                 default:
6222                                         g_assert (mini_type_is_reference (fsig->params [0]));
6223                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6224                                         ins->type = STACK_OBJ;
6225                                         break;
6226                                 }
6227
6228                                 if (opcode == OP_LOADI8_MEMBASE)
6229                                         ins = mono_decompose_opcode (cfg, ins);
6230
6231                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6232
6233                                 return ins;
6234                         }
6235                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6236                         guint32 opcode = 0;
6237                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6238
6239                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6240                                 opcode = OP_STOREI1_MEMBASE_REG;
6241                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6242                                 opcode = OP_STOREI2_MEMBASE_REG;
6243                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6244                                 opcode = OP_STOREI4_MEMBASE_REG;
6245                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6246                                 opcode = OP_STOREI8_MEMBASE_REG;
6247                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6248                                 opcode = OP_STORER4_MEMBASE_REG;
6249                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6250                                 opcode = OP_STORER8_MEMBASE_REG;
6251                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6252                                 opcode = OP_STORE_MEMBASE_REG;
6253
6254                         if (opcode) {
6255                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6256
6257                                 MONO_INST_NEW (cfg, ins, opcode);
6258                                 ins->sreg1 = args [1]->dreg;
6259                                 ins->inst_destbasereg = args [0]->dreg;
6260                                 ins->inst_offset = 0;
6261                                 MONO_ADD_INS (cfg->cbb, ins);
6262
6263                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6264                                         ins = mono_decompose_opcode (cfg, ins);
6265
6266                                 return ins;
6267                         }
6268                 }
6269         } else if (cmethod->klass->image == mono_defaults.corlib &&
6270                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6271                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6272                 ins = NULL;
6273
6274 #if SIZEOF_REGISTER == 8
6275                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6276                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6277                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6278                                 ins->dreg = mono_alloc_preg (cfg);
6279                                 ins->sreg1 = args [0]->dreg;
6280                                 ins->type = STACK_I8;
6281                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6282                                 MONO_ADD_INS (cfg->cbb, ins);
6283                         } else {
6284                                 MonoInst *load_ins;
6285
6286                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6287
6288                                 /* 64 bit reads are already atomic */
6289                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6290                                 load_ins->dreg = mono_alloc_preg (cfg);
6291                                 load_ins->inst_basereg = args [0]->dreg;
6292                                 load_ins->inst_offset = 0;
6293                                 load_ins->type = STACK_I8;
6294                                 MONO_ADD_INS (cfg->cbb, load_ins);
6295
6296                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6297
6298                                 ins = load_ins;
6299                         }
6300                 }
6301 #endif
6302
6303                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6304                         MonoInst *ins_iconst;
6305                         guint32 opcode = 0;
6306
6307                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6308                                 opcode = OP_ATOMIC_ADD_I4;
6309                                 cfg->has_atomic_add_i4 = TRUE;
6310                         }
6311 #if SIZEOF_REGISTER == 8
6312                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6313                                 opcode = OP_ATOMIC_ADD_I8;
6314 #endif
6315                         if (opcode) {
6316                                 if (!mono_arch_opcode_supported (opcode))
6317                                         return NULL;
6318                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6319                                 ins_iconst->inst_c0 = 1;
6320                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6321                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6322
6323                                 MONO_INST_NEW (cfg, ins, opcode);
6324                                 ins->dreg = mono_alloc_ireg (cfg);
6325                                 ins->inst_basereg = args [0]->dreg;
6326                                 ins->inst_offset = 0;
6327                                 ins->sreg2 = ins_iconst->dreg;
6328                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6329                                 MONO_ADD_INS (cfg->cbb, ins);
6330                         }
6331                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6332                         MonoInst *ins_iconst;
6333                         guint32 opcode = 0;
6334
6335                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6336                                 opcode = OP_ATOMIC_ADD_I4;
6337                                 cfg->has_atomic_add_i4 = TRUE;
6338                         }
6339 #if SIZEOF_REGISTER == 8
6340                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6341                                 opcode = OP_ATOMIC_ADD_I8;
6342 #endif
6343                         if (opcode) {
6344                                 if (!mono_arch_opcode_supported (opcode))
6345                                         return NULL;
6346                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6347                                 ins_iconst->inst_c0 = -1;
6348                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6349                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6350
6351                                 MONO_INST_NEW (cfg, ins, opcode);
6352                                 ins->dreg = mono_alloc_ireg (cfg);
6353                                 ins->inst_basereg = args [0]->dreg;
6354                                 ins->inst_offset = 0;
6355                                 ins->sreg2 = ins_iconst->dreg;
6356                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6357                                 MONO_ADD_INS (cfg->cbb, ins);
6358                         }
6359                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6360                         guint32 opcode = 0;
6361
6362                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6363                                 opcode = OP_ATOMIC_ADD_I4;
6364                                 cfg->has_atomic_add_i4 = TRUE;
6365                         }
6366 #if SIZEOF_REGISTER == 8
6367                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6368                                 opcode = OP_ATOMIC_ADD_I8;
6369 #endif
6370                         if (opcode) {
6371                                 if (!mono_arch_opcode_supported (opcode))
6372                                         return NULL;
6373                                 MONO_INST_NEW (cfg, ins, opcode);
6374                                 ins->dreg = mono_alloc_ireg (cfg);
6375                                 ins->inst_basereg = args [0]->dreg;
6376                                 ins->inst_offset = 0;
6377                                 ins->sreg2 = args [1]->dreg;
6378                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6379                                 MONO_ADD_INS (cfg->cbb, ins);
6380                         }
6381                 }
6382                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6383                         MonoInst *f2i = NULL, *i2f;
6384                         guint32 opcode, f2i_opcode, i2f_opcode;
6385                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6386                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6387
6388                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6389                             fsig->params [0]->type == MONO_TYPE_R4) {
6390                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6391                                 f2i_opcode = OP_MOVE_F_TO_I4;
6392                                 i2f_opcode = OP_MOVE_I4_TO_F;
6393                                 cfg->has_atomic_exchange_i4 = TRUE;
6394                         }
6395 #if SIZEOF_REGISTER == 8
6396                         else if (is_ref ||
6397                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6398                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6399                                  fsig->params [0]->type == MONO_TYPE_I) {
6400                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6401                                 f2i_opcode = OP_MOVE_F_TO_I8;
6402                                 i2f_opcode = OP_MOVE_I8_TO_F;
6403                         }
6404 #else
6405                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6406                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6407                                 cfg->has_atomic_exchange_i4 = TRUE;
6408                         }
6409 #endif
6410                         else
6411                                 return NULL;
6412
6413                         if (!mono_arch_opcode_supported (opcode))
6414                                 return NULL;
6415
6416                         if (is_float) {
6417                                 /* TODO: Decompose these opcodes instead of bailing here. */
6418                                 if (COMPILE_SOFT_FLOAT (cfg))
6419                                         return NULL;
6420
6421                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6422                                 f2i->dreg = mono_alloc_ireg (cfg);
6423                                 f2i->sreg1 = args [1]->dreg;
6424                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6425                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6426                                 MONO_ADD_INS (cfg->cbb, f2i);
6427                         }
6428
6429                         MONO_INST_NEW (cfg, ins, opcode);
6430                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6431                         ins->inst_basereg = args [0]->dreg;
6432                         ins->inst_offset = 0;
6433                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6434                         MONO_ADD_INS (cfg->cbb, ins);
6435
6436                         switch (fsig->params [0]->type) {
6437                         case MONO_TYPE_I4:
6438                                 ins->type = STACK_I4;
6439                                 break;
6440                         case MONO_TYPE_I8:
6441                                 ins->type = STACK_I8;
6442                                 break;
6443                         case MONO_TYPE_I:
6444 #if SIZEOF_REGISTER == 8
6445                                 ins->type = STACK_I8;
6446 #else
6447                                 ins->type = STACK_I4;
6448 #endif
6449                                 break;
6450                         case MONO_TYPE_R4:
6451                         case MONO_TYPE_R8:
6452                                 ins->type = STACK_R8;
6453                                 break;
6454                         default:
6455                                 g_assert (mini_type_is_reference (fsig->params [0]));
6456                                 ins->type = STACK_OBJ;
6457                                 break;
6458                         }
6459
6460                         if (is_float) {
6461                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6462                                 i2f->dreg = mono_alloc_freg (cfg);
6463                                 i2f->sreg1 = ins->dreg;
6464                                 i2f->type = STACK_R8;
6465                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6466                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6467                                 MONO_ADD_INS (cfg->cbb, i2f);
6468
6469                                 ins = i2f;
6470                         }
6471
6472                         if (cfg->gen_write_barriers && is_ref)
6473                                 emit_write_barrier (cfg, args [0], args [1]);
6474                 }
6475                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6476                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6477                         guint32 opcode, f2i_opcode, i2f_opcode;
6478                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6479                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6480
6481                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6482                             fsig->params [1]->type == MONO_TYPE_R4) {
6483                                 opcode = OP_ATOMIC_CAS_I4;
6484                                 f2i_opcode = OP_MOVE_F_TO_I4;
6485                                 i2f_opcode = OP_MOVE_I4_TO_F;
6486                                 cfg->has_atomic_cas_i4 = TRUE;
6487                         }
6488 #if SIZEOF_REGISTER == 8
6489                         else if (is_ref ||
6490                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6491                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6492                                  fsig->params [1]->type == MONO_TYPE_I) {
6493                                 opcode = OP_ATOMIC_CAS_I8;
6494                                 f2i_opcode = OP_MOVE_F_TO_I8;
6495                                 i2f_opcode = OP_MOVE_I8_TO_F;
6496                         }
6497 #else
6498                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6499                                 opcode = OP_ATOMIC_CAS_I4;
6500                                 cfg->has_atomic_cas_i4 = TRUE;
6501                         }
6502 #endif
6503                         else
6504                                 return NULL;
6505
6506                         if (!mono_arch_opcode_supported (opcode))
6507                                 return NULL;
6508
6509                         if (is_float) {
6510                                 /* TODO: Decompose these opcodes instead of bailing here. */
6511                                 if (COMPILE_SOFT_FLOAT (cfg))
6512                                         return NULL;
6513
6514                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6515                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6516                                 f2i_new->sreg1 = args [1]->dreg;
6517                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6518                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6519                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6520
6521                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6522                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6523                                 f2i_cmp->sreg1 = args [2]->dreg;
6524                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6525                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6526                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6527                         }
6528
6529                         MONO_INST_NEW (cfg, ins, opcode);
6530                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6531                         ins->sreg1 = args [0]->dreg;
6532                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6533                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6534                         MONO_ADD_INS (cfg->cbb, ins);
6535
6536                         switch (fsig->params [1]->type) {
6537                         case MONO_TYPE_I4:
6538                                 ins->type = STACK_I4;
6539                                 break;
6540                         case MONO_TYPE_I8:
6541                                 ins->type = STACK_I8;
6542                                 break;
6543                         case MONO_TYPE_I:
6544 #if SIZEOF_REGISTER == 8
6545                                 ins->type = STACK_I8;
6546 #else
6547                                 ins->type = STACK_I4;
6548 #endif
6549                                 break;
6550                         case MONO_TYPE_R4:
6551                                 ins->type = cfg->r4_stack_type;
6552                                 break;
6553                         case MONO_TYPE_R8:
6554                                 ins->type = STACK_R8;
6555                                 break;
6556                         default:
6557                                 g_assert (mini_type_is_reference (fsig->params [1]));
6558                                 ins->type = STACK_OBJ;
6559                                 break;
6560                         }
6561
6562                         if (is_float) {
6563                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6564                                 i2f->dreg = mono_alloc_freg (cfg);
6565                                 i2f->sreg1 = ins->dreg;
6566                                 i2f->type = STACK_R8;
6567                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6568                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6569                                 MONO_ADD_INS (cfg->cbb, i2f);
6570
6571                                 ins = i2f;
6572                         }
6573
6574                         if (cfg->gen_write_barriers && is_ref)
6575                                 emit_write_barrier (cfg, args [0], args [1]);
6576                 }
6577                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6578                          fsig->params [1]->type == MONO_TYPE_I4) {
6579                         MonoInst *cmp, *ceq;
6580
6581                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6582                                 return NULL;
6583
6584                         /* int32 r = CAS (location, value, comparand); */
6585                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6586                         ins->dreg = alloc_ireg (cfg);
6587                         ins->sreg1 = args [0]->dreg;
6588                         ins->sreg2 = args [1]->dreg;
6589                         ins->sreg3 = args [2]->dreg;
6590                         ins->type = STACK_I4;
6591                         MONO_ADD_INS (cfg->cbb, ins);
6592
6593                         /* bool result = r == comparand; */
6594                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6595                         cmp->sreg1 = ins->dreg;
6596                         cmp->sreg2 = args [2]->dreg;
6597                         cmp->type = STACK_I4;
6598                         MONO_ADD_INS (cfg->cbb, cmp);
6599
6600                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6601                         ceq->dreg = alloc_ireg (cfg);
6602                         ceq->type = STACK_I4;
6603                         MONO_ADD_INS (cfg->cbb, ceq);
6604
6605                         /* *success = result; */
6606                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6607
6608                         cfg->has_atomic_cas_i4 = TRUE;
6609                 }
6610                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6611                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6612
6613                 if (ins)
6614                         return ins;
6615         } else if (cmethod->klass->image == mono_defaults.corlib &&
6616                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6617                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6618                 ins = NULL;
6619
6620                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6621                         guint32 opcode = 0;
6622                         MonoType *t = fsig->params [0];
6623                         gboolean is_ref;
6624                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6625
6626                         g_assert (t->byref);
6627                         /* t is a byref type, so the reference check is more complicated */
6628                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6629                         if (t->type == MONO_TYPE_I1)
6630                                 opcode = OP_ATOMIC_LOAD_I1;
6631                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6632                                 opcode = OP_ATOMIC_LOAD_U1;
6633                         else if (t->type == MONO_TYPE_I2)
6634                                 opcode = OP_ATOMIC_LOAD_I2;
6635                         else if (t->type == MONO_TYPE_U2)
6636                                 opcode = OP_ATOMIC_LOAD_U2;
6637                         else if (t->type == MONO_TYPE_I4)
6638                                 opcode = OP_ATOMIC_LOAD_I4;
6639                         else if (t->type == MONO_TYPE_U4)
6640                                 opcode = OP_ATOMIC_LOAD_U4;
6641                         else if (t->type == MONO_TYPE_R4)
6642                                 opcode = OP_ATOMIC_LOAD_R4;
6643                         else if (t->type == MONO_TYPE_R8)
6644                                 opcode = OP_ATOMIC_LOAD_R8;
6645 #if SIZEOF_REGISTER == 8
6646                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6647                                 opcode = OP_ATOMIC_LOAD_I8;
6648                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6649                                 opcode = OP_ATOMIC_LOAD_U8;
6650 #else
6651                         else if (t->type == MONO_TYPE_I)
6652                                 opcode = OP_ATOMIC_LOAD_I4;
6653                         else if (is_ref || t->type == MONO_TYPE_U)
6654                                 opcode = OP_ATOMIC_LOAD_U4;
6655 #endif
6656
6657                         if (opcode) {
6658                                 if (!mono_arch_opcode_supported (opcode))
6659                                         return NULL;
6660
6661                                 MONO_INST_NEW (cfg, ins, opcode);
6662                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6663                                 ins->sreg1 = args [0]->dreg;
6664                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6665                                 MONO_ADD_INS (cfg->cbb, ins);
6666
6667                                 switch (t->type) {
6668                                 case MONO_TYPE_BOOLEAN:
6669                                 case MONO_TYPE_I1:
6670                                 case MONO_TYPE_U1:
6671                                 case MONO_TYPE_I2:
6672                                 case MONO_TYPE_U2:
6673                                 case MONO_TYPE_I4:
6674                                 case MONO_TYPE_U4:
6675                                         ins->type = STACK_I4;
6676                                         break;
6677                                 case MONO_TYPE_I8:
6678                                 case MONO_TYPE_U8:
6679                                         ins->type = STACK_I8;
6680                                         break;
6681                                 case MONO_TYPE_I:
6682                                 case MONO_TYPE_U:
6683 #if SIZEOF_REGISTER == 8
6684                                         ins->type = STACK_I8;
6685 #else
6686                                         ins->type = STACK_I4;
6687 #endif
6688                                         break;
6689                                 case MONO_TYPE_R4:
6690                                         ins->type = cfg->r4_stack_type;
6691                                         break;
6692                                 case MONO_TYPE_R8:
6693                                         ins->type = STACK_R8;
6694                                         break;
6695                                 default:
6696                                         g_assert (is_ref);
6697                                         ins->type = STACK_OBJ;
6698                                         break;
6699                                 }
6700                         }
6701                 }
6702
6703                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6704                         guint32 opcode = 0;
6705                         MonoType *t = fsig->params [0];
6706                         gboolean is_ref;
6707
6708                         g_assert (t->byref);
6709                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6710                         if (t->type == MONO_TYPE_I1)
6711                                 opcode = OP_ATOMIC_STORE_I1;
6712                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6713                                 opcode = OP_ATOMIC_STORE_U1;
6714                         else if (t->type == MONO_TYPE_I2)
6715                                 opcode = OP_ATOMIC_STORE_I2;
6716                         else if (t->type == MONO_TYPE_U2)
6717                                 opcode = OP_ATOMIC_STORE_U2;
6718                         else if (t->type == MONO_TYPE_I4)
6719                                 opcode = OP_ATOMIC_STORE_I4;
6720                         else if (t->type == MONO_TYPE_U4)
6721                                 opcode = OP_ATOMIC_STORE_U4;
6722                         else if (t->type == MONO_TYPE_R4)
6723                                 opcode = OP_ATOMIC_STORE_R4;
6724                         else if (t->type == MONO_TYPE_R8)
6725                                 opcode = OP_ATOMIC_STORE_R8;
6726 #if SIZEOF_REGISTER == 8
6727                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6728                                 opcode = OP_ATOMIC_STORE_I8;
6729                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6730                                 opcode = OP_ATOMIC_STORE_U8;
6731 #else
6732                         else if (t->type == MONO_TYPE_I)
6733                                 opcode = OP_ATOMIC_STORE_I4;
6734                         else if (is_ref || t->type == MONO_TYPE_U)
6735                                 opcode = OP_ATOMIC_STORE_U4;
6736 #endif
6737
6738                         if (opcode) {
6739                                 if (!mono_arch_opcode_supported (opcode))
6740                                         return NULL;
6741
6742                                 MONO_INST_NEW (cfg, ins, opcode);
6743                                 ins->dreg = args [0]->dreg;
6744                                 ins->sreg1 = args [1]->dreg;
6745                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6746                                 MONO_ADD_INS (cfg->cbb, ins);
6747
6748                                 if (cfg->gen_write_barriers && is_ref)
6749                                         emit_write_barrier (cfg, args [0], args [1]);
6750                         }
6751                 }
6752
6753                 if (ins)
6754                         return ins;
6755         } else if (cmethod->klass->image == mono_defaults.corlib &&
6756                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6757                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6758                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6759                         if (should_insert_brekpoint (cfg->method)) {
6760                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6761                         } else {
6762                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6763                                 MONO_ADD_INS (cfg->cbb, ins);
6764                         }
6765                         return ins;
6766                 }
6767         } else if (cmethod->klass->image == mono_defaults.corlib &&
6768                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6769                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6770                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6771 #ifdef TARGET_WIN32
6772                         EMIT_NEW_ICONST (cfg, ins, 1);
6773 #else
6774                         EMIT_NEW_ICONST (cfg, ins, 0);
6775 #endif
6776                 }
6777         } else if (cmethod->klass->image == mono_defaults.corlib &&
6778                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6779                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6780                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6781                         /* No stack walks are currently available, so implement this as an intrinsic */
6782                         MonoInst *assembly_ins;
6783
6784                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6785                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6786                         return ins;
6787                 }
6788         } else if (cmethod->klass->image == mono_defaults.corlib &&
6789                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6790                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6791                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6792                         /* No stack walks are currently available, so implement this as an intrinsic */
6793                         MonoInst *method_ins;
6794                         MonoMethod *declaring = cfg->method;
6795
6796                         /* This returns the declaring generic method */
6797                         if (declaring->is_inflated)
6798                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6799                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6800                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6801                         cfg->no_inline = TRUE;
6802                         if (cfg->method != cfg->current_method)
6803                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6804                         return ins;
6805                 }
6806         } else if (cmethod->klass == mono_defaults.math_class) {
6807                 /*
6808                  * There is general branchless code for Min/Max, but it does not work for
6809                  * all inputs:
6810                  * http://everything2.com/?node_id=1051618
6811                  */
6812         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6813                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6814                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6815                                 !strcmp (cmethod->klass->name, "Selector")) ||
6816                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6817                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6818                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6819                                 !strcmp (cmethod->klass->name, "Selector"))
6820                            ) {
6821                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6822                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6823                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6824                     cfg->compile_aot) {
6825                         MonoInst *pi;
6826                         MonoJumpInfoToken *ji;
6827                         char *s;
6828
6829                         if (args [0]->opcode == OP_GOT_ENTRY) {
6830                                 pi = (MonoInst *)args [0]->inst_p1;
6831                                 g_assert (pi->opcode == OP_PATCH_INFO);
6832                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6833                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6834                         } else {
6835                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6836                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6837                         }
6838
6839                         NULLIFY_INS (args [0]);
6840
6841                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6842                         return_val_if_nok (&cfg->error, NULL);
6843
6844                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6845                         ins->dreg = mono_alloc_ireg (cfg);
6846                         // FIXME: Leaks
6847                         ins->inst_p0 = s;
6848                         MONO_ADD_INS (cfg->cbb, ins);
6849                         return ins;
6850                 }
6851         }
6852
6853 #ifdef MONO_ARCH_SIMD_INTRINSICS
6854         if (cfg->opt & MONO_OPT_SIMD) {
6855                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6856                 if (ins)
6857                         return ins;
6858         }
6859 #endif
6860
6861         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6862         if (ins)
6863                 return ins;
6864
6865         if (COMPILE_LLVM (cfg)) {
6866                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6867                 if (ins)
6868                         return ins;
6869         }
6870
6871         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6872 }
6873
6874 /*
6875  * This entry point could be used later for arbitrary method
6876  * redirection.
6877  */
6878 inline static MonoInst*
6879 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6880                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6881 {
6882         if (method->klass == mono_defaults.string_class) {
6883                 /* managed string allocation support */
6884                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6885                         MonoInst *iargs [2];
6886                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6887                         MonoMethod *managed_alloc = NULL;
6888
6889                         g_assert (vtable); /*Should not fail since it System.String*/
6890 #ifndef MONO_CROSS_COMPILE
6891                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6892 #endif
6893                         if (!managed_alloc)
6894                                 return NULL;
6895                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6896                         iargs [1] = args [0];
6897                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6898                 }
6899         }
6900         return NULL;
6901 }
6902
6903 static void
6904 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6905 {
6906         MonoInst *store, *temp;
6907         int i;
6908
6909         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6910                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6911
6912                 /*
6913                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6914                  * would be different than the MonoInst's used to represent arguments, and
6915                  * the ldelema implementation can't deal with that.
6916                  * Solution: When ldelema is used on an inline argument, create a var for
6917                  * it, emit ldelema on that var, and emit the saving code below in
6918                  * inline_method () if needed.
6919                  */
6920                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6921                 cfg->args [i] = temp;
6922                 /* This uses cfg->args [i] which is set by the preceeding line */
6923                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6924                 store->cil_code = sp [0]->cil_code;
6925                 sp++;
6926         }
6927 }
6928
6929 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6930 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6931
6932 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6933 static gboolean
6934 check_inline_called_method_name_limit (MonoMethod *called_method)
6935 {
6936         int strncmp_result;
6937         static const char *limit = NULL;
6938
6939         if (limit == NULL) {
6940                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6941
6942                 if (limit_string != NULL)
6943                         limit = limit_string;
6944                 else
6945                         limit = "";
6946         }
6947
6948         if (limit [0] != '\0') {
6949                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6950
6951                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6952                 g_free (called_method_name);
6953
6954                 //return (strncmp_result <= 0);
6955                 return (strncmp_result == 0);
6956         } else {
6957                 return TRUE;
6958         }
6959 }
6960 #endif
6961
6962 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6963 static gboolean
6964 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6965 {
6966         int strncmp_result;
6967         static const char *limit = NULL;
6968
6969         if (limit == NULL) {
6970                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6971                 if (limit_string != NULL) {
6972                         limit = limit_string;
6973                 } else {
6974                         limit = "";
6975                 }
6976         }
6977
6978         if (limit [0] != '\0') {
6979                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6980
6981                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6982                 g_free (caller_method_name);
6983
6984                 //return (strncmp_result <= 0);
6985                 return (strncmp_result == 0);
6986         } else {
6987                 return TRUE;
6988         }
6989 }
6990 #endif
6991
6992 static void
6993 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6994 {
6995         static double r8_0 = 0.0;
6996         static float r4_0 = 0.0;
6997         MonoInst *ins;
6998         int t;
6999
7000         rtype = mini_get_underlying_type (rtype);
7001         t = rtype->type;
7002
7003         if (rtype->byref) {
7004                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7005         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7006                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
7007         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7008                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
7009         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7010                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7011                 ins->type = STACK_R4;
7012                 ins->inst_p0 = (void*)&r4_0;
7013                 ins->dreg = dreg;
7014                 MONO_ADD_INS (cfg->cbb, ins);
7015         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7016                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7017                 ins->type = STACK_R8;
7018                 ins->inst_p0 = (void*)&r8_0;
7019                 ins->dreg = dreg;
7020                 MONO_ADD_INS (cfg->cbb, ins);
7021         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7022                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7023                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7024         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7025                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7026         } else {
7027                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7028         }
7029 }
7030
7031 static void
7032 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7033 {
7034         int t;
7035
7036         rtype = mini_get_underlying_type (rtype);
7037         t = rtype->type;
7038
7039         if (rtype->byref) {
7040                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7041         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7042                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7043         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7044                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7045         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7046                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7047         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7048                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7049         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7050                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7051                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7052         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7053                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7054         } else {
7055                 emit_init_rvar (cfg, dreg, rtype);
7056         }
7057 }
7058
7059 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7060 static void
7061 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7062 {
7063         MonoInst *var = cfg->locals [local];
7064         if (COMPILE_SOFT_FLOAT (cfg)) {
7065                 MonoInst *store;
7066                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7067                 emit_init_rvar (cfg, reg, type);
7068                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7069         } else {
7070                 if (init)
7071                         emit_init_rvar (cfg, var->dreg, type);
7072                 else
7073                         emit_dummy_init_rvar (cfg, var->dreg, type);
7074         }
7075 }
7076
7077 /*
7078  * inline_method:
7079  *
7080  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
7081  */
7082 static int
7083 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7084                guchar *ip, guint real_offset, gboolean inline_always)
7085 {
7086         MonoError error;
7087         MonoInst *ins, *rvar = NULL;
7088         MonoMethodHeader *cheader;
7089         MonoBasicBlock *ebblock, *sbblock;
7090         int i, costs;
7091         MonoMethod *prev_inlined_method;
7092         MonoInst **prev_locals, **prev_args;
7093         MonoType **prev_arg_types;
7094         guint prev_real_offset;
7095         GHashTable *prev_cbb_hash;
7096         MonoBasicBlock **prev_cil_offset_to_bb;
7097         MonoBasicBlock *prev_cbb;
7098         const unsigned char *prev_ip;
7099         unsigned char *prev_cil_start;
7100         guint32 prev_cil_offset_to_bb_len;
7101         MonoMethod *prev_current_method;
7102         MonoGenericContext *prev_generic_context;
7103         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7104
7105         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7106
7107 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7108         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7109                 return 0;
7110 #endif
7111 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7112         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7113                 return 0;
7114 #endif
7115
7116         if (!fsig)
7117                 fsig = mono_method_signature (cmethod);
7118
7119         if (cfg->verbose_level > 2)
7120                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7121
7122         if (!cmethod->inline_info) {
7123                 cfg->stat_inlineable_methods++;
7124                 cmethod->inline_info = 1;
7125         }
7126
7127         /* allocate local variables */
7128         cheader = mono_method_get_header_checked (cmethod, &error);
7129         if (!cheader) {
7130                 if (inline_always) {
7131                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7132                         mono_error_move (&cfg->error, &error);
7133                 } else {
7134                         mono_error_cleanup (&error);
7135                 }
7136                 return 0;
7137         }
7138
7139         /*Must verify before creating locals as it can cause the JIT to assert.*/
7140         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7141                 mono_metadata_free_mh (cheader);
7142                 return 0;
7143         }
7144
7145         /* allocate space to store the return value */
7146         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7147                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7148         }
7149
7150         prev_locals = cfg->locals;
7151         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7152         for (i = 0; i < cheader->num_locals; ++i)
7153                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7154
7155         /* allocate start and end blocks */
7156         /* This is needed so if the inline is aborted, we can clean up */
7157         NEW_BBLOCK (cfg, sbblock);
7158         sbblock->real_offset = real_offset;
7159
7160         NEW_BBLOCK (cfg, ebblock);
7161         ebblock->block_num = cfg->num_bblocks++;
7162         ebblock->real_offset = real_offset;
7163
7164         prev_args = cfg->args;
7165         prev_arg_types = cfg->arg_types;
7166         prev_inlined_method = cfg->inlined_method;
7167         cfg->inlined_method = cmethod;
7168         cfg->ret_var_set = FALSE;
7169         cfg->inline_depth ++;
7170         prev_real_offset = cfg->real_offset;
7171         prev_cbb_hash = cfg->cbb_hash;
7172         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7173         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7174         prev_cil_start = cfg->cil_start;
7175         prev_ip = cfg->ip;
7176         prev_cbb = cfg->cbb;
7177         prev_current_method = cfg->current_method;
7178         prev_generic_context = cfg->generic_context;
7179         prev_ret_var_set = cfg->ret_var_set;
7180         prev_disable_inline = cfg->disable_inline;
7181
7182         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7183                 virtual_ = TRUE;
7184
7185         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7186
7187         ret_var_set = cfg->ret_var_set;
7188
7189         cfg->inlined_method = prev_inlined_method;
7190         cfg->real_offset = prev_real_offset;
7191         cfg->cbb_hash = prev_cbb_hash;
7192         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7193         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7194         cfg->cil_start = prev_cil_start;
7195         cfg->ip = prev_ip;
7196         cfg->locals = prev_locals;
7197         cfg->args = prev_args;
7198         cfg->arg_types = prev_arg_types;
7199         cfg->current_method = prev_current_method;
7200         cfg->generic_context = prev_generic_context;
7201         cfg->ret_var_set = prev_ret_var_set;
7202         cfg->disable_inline = prev_disable_inline;
7203         cfg->inline_depth --;
7204
7205         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7206                 if (cfg->verbose_level > 2)
7207                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7208
7209                 cfg->stat_inlined_methods++;
7210
7211                 /* always add some code to avoid block split failures */
7212                 MONO_INST_NEW (cfg, ins, OP_NOP);
7213                 MONO_ADD_INS (prev_cbb, ins);
7214
7215                 prev_cbb->next_bb = sbblock;
7216                 link_bblock (cfg, prev_cbb, sbblock);
7217
7218                 /*
7219                  * Get rid of the begin and end bblocks if possible to aid local
7220                  * optimizations.
7221                  */
7222                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7223
7224                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7225                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7226
7227                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7228                         MonoBasicBlock *prev = ebblock->in_bb [0];
7229
7230                         if (prev->next_bb == ebblock) {
7231                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7232                                 cfg->cbb = prev;
7233                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7234                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7235                                         cfg->cbb = prev_cbb;
7236                                 }
7237                         } else {
7238                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7239                                 cfg->cbb = ebblock;
7240                         }
7241                 } else {
7242                         /*
7243                          * Its possible that the rvar is set in some prev bblock, but not in others.
7244                          * (#1835).
7245                          */
7246                         if (rvar) {
7247                                 MonoBasicBlock *bb;
7248
7249                                 for (i = 0; i < ebblock->in_count; ++i) {
7250                                         bb = ebblock->in_bb [i];
7251
7252                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7253                                                 cfg->cbb = bb;
7254
7255                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7256                                         }
7257                                 }
7258                         }
7259
7260                         cfg->cbb = ebblock;
7261                 }
7262
7263                 if (rvar) {
7264                         /*
7265                          * If the inlined method contains only a throw, then the ret var is not
7266                          * set, so set it to a dummy value.
7267                          */
7268                         if (!ret_var_set)
7269                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7270
7271                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7272                         *sp++ = ins;
7273                 }
7274                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7275                 return costs + 1;
7276         } else {
7277                 if (cfg->verbose_level > 2)
7278                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7279                 cfg->exception_type = MONO_EXCEPTION_NONE;
7280
7281                 /* This gets rid of the newly added bblocks */
7282                 cfg->cbb = prev_cbb;
7283         }
7284         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7285         return 0;
7286 }
7287
7288 /*
7289  * Some of these comments may well be out-of-date.
7290  * Design decisions: we do a single pass over the IL code (and we do bblock
7291  * splitting/merging in the few cases when it's required: a back jump to an IL
7292  * address that was not already seen as bblock starting point).
7293  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7294  * Complex operations are decomposed in simpler ones right away. We need to let the
7295  * arch-specific code peek and poke inside this process somehow (except when the
7296  * optimizations can take advantage of the full semantic info of coarse opcodes).
7297  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7298  * MonoInst->opcode initially is the IL opcode or some simplification of that
7299  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7300  * opcode with value bigger than OP_LAST.
7301  * At this point the IR can be handed over to an interpreter, a dumb code generator
7302  * or to the optimizing code generator that will translate it to SSA form.
7303  *
7304  * Profiling directed optimizations.
7305  * We may compile by default with few or no optimizations and instrument the code
7306  * or the user may indicate what methods to optimize the most either in a config file
7307  * or through repeated runs where the compiler applies offline the optimizations to
7308  * each method and then decides if it was worth it.
7309  */
7310
7311 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7312 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7313 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7314 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7315 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7316 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7317 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7318 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7319
7320 /* offset from br.s -> br like opcodes */
7321 #define BIG_BRANCH_OFFSET 13
7322
7323 static gboolean
7324 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7325 {
7326         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7327
7328         return b == NULL || b == bb;
7329 }
7330
7331 static int
7332 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7333 {
7334         unsigned char *ip = start;
7335         unsigned char *target;
7336         int i;
7337         guint cli_addr;
7338         MonoBasicBlock *bblock;
7339         const MonoOpcode *opcode;
7340
7341         while (ip < end) {
7342                 cli_addr = ip - start;
7343                 i = mono_opcode_value ((const guint8 **)&ip, end);
7344                 if (i < 0)
7345                         UNVERIFIED;
7346                 opcode = &mono_opcodes [i];
7347                 switch (opcode->argument) {
7348                 case MonoInlineNone:
7349                         ip++;
7350                         break;
7351                 case MonoInlineString:
7352                 case MonoInlineType:
7353                 case MonoInlineField:
7354                 case MonoInlineMethod:
7355                 case MonoInlineTok:
7356                 case MonoInlineSig:
7357                 case MonoShortInlineR:
7358                 case MonoInlineI:
7359                         ip += 5;
7360                         break;
7361                 case MonoInlineVar:
7362                         ip += 3;
7363                         break;
7364                 case MonoShortInlineVar:
7365                 case MonoShortInlineI:
7366                         ip += 2;
7367                         break;
7368                 case MonoShortInlineBrTarget:
7369                         target = start + cli_addr + 2 + (signed char)ip [1];
7370                         GET_BBLOCK (cfg, bblock, target);
7371                         ip += 2;
7372                         if (ip < end)
7373                                 GET_BBLOCK (cfg, bblock, ip);
7374                         break;
7375                 case MonoInlineBrTarget:
7376                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7377                         GET_BBLOCK (cfg, bblock, target);
7378                         ip += 5;
7379                         if (ip < end)
7380                                 GET_BBLOCK (cfg, bblock, ip);
7381                         break;
7382                 case MonoInlineSwitch: {
7383                         guint32 n = read32 (ip + 1);
7384                         guint32 j;
7385                         ip += 5;
7386                         cli_addr += 5 + 4 * n;
7387                         target = start + cli_addr;
7388                         GET_BBLOCK (cfg, bblock, target);
7389
7390                         for (j = 0; j < n; ++j) {
7391                                 target = start + cli_addr + (gint32)read32 (ip);
7392                                 GET_BBLOCK (cfg, bblock, target);
7393                                 ip += 4;
7394                         }
7395                         break;
7396                 }
7397                 case MonoInlineR:
7398                 case MonoInlineI8:
7399                         ip += 9;
7400                         break;
7401                 default:
7402                         g_assert_not_reached ();
7403                 }
7404
7405                 if (i == CEE_THROW) {
7406                         unsigned char *bb_start = ip - 1;
7407
7408                         /* Find the start of the bblock containing the throw */
7409                         bblock = NULL;
7410                         while ((bb_start >= start) && !bblock) {
7411                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7412                                 bb_start --;
7413                         }
7414                         if (bblock)
7415                                 bblock->out_of_line = 1;
7416                 }
7417         }
7418         return 0;
7419 unverified:
7420 exception_exit:
7421         *pos = ip;
7422         return 1;
7423 }
7424
7425 static inline MonoMethod *
7426 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7427 {
7428         MonoMethod *method;
7429
7430         mono_error_init (error);
7431
7432         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7433                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7434                 if (context) {
7435                         method = mono_class_inflate_generic_method_checked (method, context, error);
7436                 }
7437         } else {
7438                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7439         }
7440
7441         return method;
7442 }
7443
7444 static inline MonoMethod *
7445 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7446 {
7447         MonoError error;
7448         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7449
7450         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7451                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7452                 method = NULL;
7453         }
7454
7455         if (!method && !cfg)
7456                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7457
7458         return method;
7459 }
7460
7461 static inline MonoClass*
7462 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7463 {
7464         MonoError error;
7465         MonoClass *klass;
7466
7467         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7468                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7469                 if (context) {
7470                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7471                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7472                 }
7473         } else {
7474                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7475                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7476         }
7477         if (klass)
7478                 mono_class_init (klass);
7479         return klass;
7480 }
7481
7482 static inline MonoMethodSignature*
7483 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7484 {
7485         MonoMethodSignature *fsig;
7486
7487         mono_error_init (error);
7488         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7489                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7490         } else {
7491                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7492                 return_val_if_nok (error, NULL);
7493         }
7494         if (context) {
7495                 fsig = mono_inflate_generic_signature(fsig, context, error);
7496         }
7497         return fsig;
7498 }
7499
7500 static MonoMethod*
7501 throw_exception (void)
7502 {
7503         static MonoMethod *method = NULL;
7504
7505         if (!method) {
7506                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7507                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7508         }
7509         g_assert (method);
7510         return method;
7511 }
7512
7513 static void
7514 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7515 {
7516         MonoMethod *thrower = throw_exception ();
7517         MonoInst *args [1];
7518
7519         EMIT_NEW_PCONST (cfg, args [0], ex);
7520         mono_emit_method_call (cfg, thrower, args, NULL);
7521 }
7522
7523 /*
7524  * Return the original method is a wrapper is specified. We can only access
7525  * the custom attributes from the original method.
7526  */
7527 static MonoMethod*
7528 get_original_method (MonoMethod *method)
7529 {
7530         if (method->wrapper_type == MONO_WRAPPER_NONE)
7531                 return method;
7532
7533         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7534         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7535                 return NULL;
7536
7537         /* in other cases we need to find the original method */
7538         return mono_marshal_method_from_wrapper (method);
7539 }
7540
7541 static void
7542 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7543 {
7544         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7545         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7546         if (ex)
7547                 emit_throw_exception (cfg, ex);
7548 }
7549
7550 static void
7551 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7552 {
7553         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7554         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7555         if (ex)
7556                 emit_throw_exception (cfg, ex);
7557 }
7558
7559 /*
7560  * Check that the IL instructions at ip are the array initialization
7561  * sequence and return the pointer to the data and the size.
7562  */
7563 static const char*
7564 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7565 {
7566         /*
7567          * newarr[System.Int32]
7568          * dup
7569          * ldtoken field valuetype ...
7570          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7571          */
7572         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7573                 MonoError error;
7574                 guint32 token = read32 (ip + 7);
7575                 guint32 field_token = read32 (ip + 2);
7576                 guint32 field_index = field_token & 0xffffff;
7577                 guint32 rva;
7578                 const char *data_ptr;
7579                 int size = 0;
7580                 MonoMethod *cmethod;
7581                 MonoClass *dummy_class;
7582                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7583                 int dummy_align;
7584
7585                 if (!field) {
7586                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7587                         return NULL;
7588                 }
7589
7590                 *out_field_token = field_token;
7591
7592                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7593                 if (!cmethod)
7594                         return NULL;
7595                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7596                         return NULL;
7597                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7598                 case MONO_TYPE_BOOLEAN:
7599                 case MONO_TYPE_I1:
7600                 case MONO_TYPE_U1:
7601                         size = 1; break;
7602                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7603 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7604                 case MONO_TYPE_CHAR:
7605                 case MONO_TYPE_I2:
7606                 case MONO_TYPE_U2:
7607                         size = 2; break;
7608                 case MONO_TYPE_I4:
7609                 case MONO_TYPE_U4:
7610                 case MONO_TYPE_R4:
7611                         size = 4; break;
7612                 case MONO_TYPE_R8:
7613                 case MONO_TYPE_I8:
7614                 case MONO_TYPE_U8:
7615                         size = 8; break;
7616 #endif
7617                 default:
7618                         return NULL;
7619                 }
7620                 size *= len;
7621                 if (size > mono_type_size (field->type, &dummy_align))
7622                     return NULL;
7623                 *out_size = size;
7624                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7625                 if (!image_is_dynamic (method->klass->image)) {
7626                         field_index = read32 (ip + 2) & 0xffffff;
7627                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7628                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7629                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7630                         /* for aot code we do the lookup on load */
7631                         if (aot && data_ptr)
7632                                 return (const char *)GUINT_TO_POINTER (rva);
7633                 } else {
7634                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7635                         g_assert (!aot);
7636                         data_ptr = mono_field_get_data (field);
7637                 }
7638                 return data_ptr;
7639         }
7640         return NULL;
7641 }
7642
7643 static void
7644 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7645 {
7646         MonoError error;
7647         char *method_fname = mono_method_full_name (method, TRUE);
7648         char *method_code;
7649         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7650
7651         if (!header) {
7652                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7653                 mono_error_cleanup (&error);
7654         } else if (header->code_size == 0)
7655                 method_code = g_strdup ("method body is empty.");
7656         else
7657                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7658         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7659         g_free (method_fname);
7660         g_free (method_code);
7661         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7662 }
7663
7664 static void
7665 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7666 {
7667         MonoInst *ins;
7668         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7669         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7670                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7671                 /* Optimize reg-reg moves away */
7672                 /*
7673                  * Can't optimize other opcodes, since sp[0] might point to
7674                  * the last ins of a decomposed opcode.
7675                  */
7676                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7677         } else {
7678                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7679         }
7680 }
7681
7682 /*
7683  * ldloca inhibits many optimizations so try to get rid of it in common
7684  * cases.
7685  */
7686 static inline unsigned char *
7687 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7688 {
7689         int local, token;
7690         MonoClass *klass;
7691         MonoType *type;
7692
7693         if (size == 1) {
7694                 local = ip [1];
7695                 ip += 2;
7696         } else {
7697                 local = read16 (ip + 2);
7698                 ip += 4;
7699         }
7700
7701         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7702                 /* From the INITOBJ case */
7703                 token = read32 (ip + 2);
7704                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7705                 CHECK_TYPELOAD (klass);
7706                 type = mini_get_underlying_type (&klass->byval_arg);
7707                 emit_init_local (cfg, local, type, TRUE);
7708                 return ip + 6;
7709         }
7710  exception_exit:
7711         return NULL;
7712 }
7713
7714 static MonoInst*
7715 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7716 {
7717         MonoInst *icall_args [16];
7718         MonoInst *call_target, *ins, *vtable_ins;
7719         int arg_reg, this_reg, vtable_reg;
7720         gboolean is_iface = mono_class_is_interface (cmethod->klass);
7721         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7722         gboolean variant_iface = FALSE;
7723         guint32 slot;
7724         int offset;
7725
7726         /*
7727          * In llvm-only mode, vtables contain function descriptors instead of
7728          * method addresses/trampolines.
7729          */
7730         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7731
7732         if (is_iface)
7733                 slot = mono_method_get_imt_slot (cmethod);
7734         else
7735                 slot = mono_method_get_vtable_index (cmethod);
7736
7737         this_reg = sp [0]->dreg;
7738
7739         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7740                 variant_iface = TRUE;
7741
7742         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7743                 /*
7744                  * The simplest case, a normal virtual call.
7745                  */
7746                 int slot_reg = alloc_preg (cfg);
7747                 int addr_reg = alloc_preg (cfg);
7748                 int arg_reg = alloc_preg (cfg);
7749                 MonoBasicBlock *non_null_bb;
7750
7751                 vtable_reg = alloc_preg (cfg);
7752                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7753                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7754
7755                 /* Load the vtable slot, which contains a function descriptor. */
7756                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7757
7758                 NEW_BBLOCK (cfg, non_null_bb);
7759
7760                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7761                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7762                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7763
7764                 /* Slow path */
7765                 // FIXME: Make the wrapper use the preserveall cconv
7766                 // FIXME: Use one icall per slot for small slot numbers ?
7767                 icall_args [0] = vtable_ins;
7768                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7769                 /* Make the icall return the vtable slot value to save some code space */
7770                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7771                 ins->dreg = slot_reg;
7772                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7773
7774                 /* Fastpath */
7775                 MONO_START_BB (cfg, non_null_bb);
7776                 /* Load the address + arg from the vtable slot */
7777                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7778                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7779
7780                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7781         }
7782
7783         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7784                 /*
7785                  * A simple interface call
7786                  *
7787                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7788                  * The imt slot contains a function descriptor for a runtime function + arg.
7789                  */
7790                 int slot_reg = alloc_preg (cfg);
7791                 int addr_reg = alloc_preg (cfg);
7792                 int arg_reg = alloc_preg (cfg);
7793                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7794
7795                 vtable_reg = alloc_preg (cfg);
7796                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7797                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7798
7799                 /*
7800                  * The slot is already initialized when the vtable is created so there is no need
7801                  * to check it here.
7802                  */
7803
7804                 /* Load the imt slot, which contains a function descriptor. */
7805                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7806
7807                 /* Load the address + arg of the imt thunk from the imt slot */
7808                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7809                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7810                 /*
7811                  * IMT thunks in llvm-only mode are C functions which take an info argument
7812                  * plus the imt method and return the ftndesc to call.
7813                  */
7814                 icall_args [0] = thunk_arg_ins;
7815                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7816                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7817                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7818
7819                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7820         }
7821
7822         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7823                 /*
7824                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7825                  * dynamically extended as more instantiations are discovered.
7826                  * This handles generic virtual methods both on classes and interfaces.
7827                  */
7828                 int slot_reg = alloc_preg (cfg);
7829                 int addr_reg = alloc_preg (cfg);
7830                 int arg_reg = alloc_preg (cfg);
7831                 int ftndesc_reg = alloc_preg (cfg);
7832                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7833                 MonoBasicBlock *slowpath_bb, *end_bb;
7834
7835                 NEW_BBLOCK (cfg, slowpath_bb);
7836                 NEW_BBLOCK (cfg, end_bb);
7837
7838                 vtable_reg = alloc_preg (cfg);
7839                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7840                 if (is_iface)
7841                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7842                 else
7843                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7844
7845                 /* Load the slot, which contains a function descriptor. */
7846                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7847
7848                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7849                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7850                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7851                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7852
7853                 /* Fastpath */
7854                 /* Same as with iface calls */
7855                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7856                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7857                 icall_args [0] = thunk_arg_ins;
7858                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7859                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7860                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7861                 ftndesc_ins->dreg = ftndesc_reg;
7862                 /*
7863                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7864                  * they don't know about yet. Fall back to the slowpath in that case.
7865                  */
7866                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7867                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7868
7869                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7870
7871                 /* Slowpath */
7872                 MONO_START_BB (cfg, slowpath_bb);
7873                 icall_args [0] = vtable_ins;
7874                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7875                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7876                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7877                 if (is_iface)
7878                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7879                 else
7880                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7881                 ftndesc_ins->dreg = ftndesc_reg;
7882                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7883
7884                 /* Common case */
7885                 MONO_START_BB (cfg, end_bb);
7886                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7887         }
7888
7889         /*
7890          * Non-optimized cases
7891          */
7892         icall_args [0] = sp [0];
7893         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7894
7895         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7896                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7897
7898         arg_reg = alloc_preg (cfg);
7899         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7900         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7901
7902         g_assert (is_gsharedvt);
7903         if (is_iface)
7904                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7905         else
7906                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7907
7908         /*
7909          * Pass the extra argument even if the callee doesn't receive it, most
7910          * calling conventions allow this.
7911          */
7912         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7913 }
7914
7915 static gboolean
7916 is_exception_class (MonoClass *klass)
7917 {
7918         while (klass) {
7919                 if (klass == mono_defaults.exception_class)
7920                         return TRUE;
7921                 klass = klass->parent;
7922         }
7923         return FALSE;
7924 }
7925
7926 /*
7927  * is_jit_optimizer_disabled:
7928  *
7929  *   Determine whenever M's assembly has a DebuggableAttribute with the
7930  * IsJITOptimizerDisabled flag set.
7931  */
7932 static gboolean
7933 is_jit_optimizer_disabled (MonoMethod *m)
7934 {
7935         MonoError error;
7936         MonoAssembly *ass = m->klass->image->assembly;
7937         MonoCustomAttrInfo* attrs;
7938         MonoClass *klass;
7939         int i;
7940         gboolean val = FALSE;
7941
7942         g_assert (ass);
7943         if (ass->jit_optimizer_disabled_inited)
7944                 return ass->jit_optimizer_disabled;
7945
7946         klass = mono_class_try_get_debuggable_attribute_class ();
7947
7948         if (!klass) {
7949                 /* Linked away */
7950                 ass->jit_optimizer_disabled = FALSE;
7951                 mono_memory_barrier ();
7952                 ass->jit_optimizer_disabled_inited = TRUE;
7953                 return FALSE;
7954         }
7955
7956         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7957         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7958         if (attrs) {
7959                 for (i = 0; i < attrs->num_attrs; ++i) {
7960                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7961                         const gchar *p;
7962                         MonoMethodSignature *sig;
7963
7964                         if (!attr->ctor || attr->ctor->klass != klass)
7965                                 continue;
7966                         /* Decode the attribute. See reflection.c */
7967                         p = (const char*)attr->data;
7968                         g_assert (read16 (p) == 0x0001);
7969                         p += 2;
7970
7971                         // FIXME: Support named parameters
7972                         sig = mono_method_signature (attr->ctor);
7973                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7974                                 continue;
7975                         /* Two boolean arguments */
7976                         p ++;
7977                         val = *p;
7978                 }
7979                 mono_custom_attrs_free (attrs);
7980         }
7981
7982         ass->jit_optimizer_disabled = val;
7983         mono_memory_barrier ();
7984         ass->jit_optimizer_disabled_inited = TRUE;
7985
7986         return val;
7987 }
7988
7989 static gboolean
7990 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7991 {
7992         gboolean supported_tail_call;
7993         int i;
7994
7995         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7996
7997         for (i = 0; i < fsig->param_count; ++i) {
7998                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7999                         /* These can point to the current method's stack */
8000                         supported_tail_call = FALSE;
8001         }
8002         if (fsig->hasthis && cmethod->klass->valuetype)
8003                 /* this might point to the current method's stack */
8004                 supported_tail_call = FALSE;
8005         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
8006                 supported_tail_call = FALSE;
8007         if (cfg->method->save_lmf)
8008                 supported_tail_call = FALSE;
8009         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
8010                 supported_tail_call = FALSE;
8011         if (call_opcode != CEE_CALL)
8012                 supported_tail_call = FALSE;
8013
8014         /* Debugging support */
8015 #if 0
8016         if (supported_tail_call) {
8017                 if (!mono_debug_count ())
8018                         supported_tail_call = FALSE;
8019         }
8020 #endif
8021
8022         return supported_tail_call;
8023 }
8024
8025 /*
8026  * handle_ctor_call:
8027  *
8028  *   Handle calls made to ctors from NEWOBJ opcodes.
8029  */
8030 static void
8031 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8032                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8033 {
8034         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8035
8036         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8037                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8038                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8039                         mono_class_vtable (cfg->domain, cmethod->klass);
8040                         CHECK_TYPELOAD (cmethod->klass);
8041
8042                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8043                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8044                 } else {
8045                         if (context_used) {
8046                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8047                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8048                         } else {
8049                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8050
8051                                 CHECK_TYPELOAD (cmethod->klass);
8052                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8053                         }
8054                 }
8055         }
8056
8057         /* Avoid virtual calls to ctors if possible */
8058         if (mono_class_is_marshalbyref (cmethod->klass))
8059                 callvirt_this_arg = sp [0];
8060
8061         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8062                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8063                 CHECK_CFG_EXCEPTION;
8064         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8065                            mono_method_check_inlining (cfg, cmethod) &&
8066                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8067                 int costs;
8068
8069                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8070                         cfg->real_offset += 5;
8071
8072                         *inline_costs += costs - 5;
8073                 } else {
8074                         INLINE_FAILURE ("inline failure");
8075                         // FIXME-VT: Clean this up
8076                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8077                                 GSHAREDVT_FAILURE(*ip);
8078                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8079                 }
8080         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8081                 MonoInst *addr;
8082
8083                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8084
8085                 if (cfg->llvm_only) {
8086                         // FIXME: Avoid initializing vtable_arg
8087                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8088                 } else {
8089                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8090                 }
8091         } else if (context_used &&
8092                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8093                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8094                 MonoInst *cmethod_addr;
8095
8096                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8097
8098                 if (cfg->llvm_only) {
8099                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8100                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8101                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8102                 } else {
8103                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8104                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8105
8106                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8107                 }
8108         } else {
8109                 INLINE_FAILURE ("ctor call");
8110                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8111                                                                                   callvirt_this_arg, NULL, vtable_arg);
8112         }
8113  exception_exit:
8114         return;
8115 }
8116
8117 static void
8118 emit_setret (MonoCompile *cfg, MonoInst *val)
8119 {
8120         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8121         MonoInst *ins;
8122
8123         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8124                 MonoInst *ret_addr;
8125
8126                 if (!cfg->vret_addr) {
8127                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8128                 } else {
8129                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8130
8131                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8132                         ins->klass = mono_class_from_mono_type (ret_type);
8133                 }
8134         } else {
8135 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8136                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8137                         MonoInst *iargs [1];
8138                         MonoInst *conv;
8139
8140                         iargs [0] = val;
8141                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8142                         mono_arch_emit_setret (cfg, cfg->method, conv);
8143                 } else {
8144                         mono_arch_emit_setret (cfg, cfg->method, val);
8145                 }
8146 #else
8147                 mono_arch_emit_setret (cfg, cfg->method, val);
8148 #endif
8149         }
8150 }
8151
8152 /*
8153  * mono_method_to_ir:
8154  *
8155  * Translate the .net IL into linear IR.
8156  *
8157  * @start_bblock: if not NULL, the starting basic block, used during inlining.
8158  * @end_bblock: if not NULL, the ending basic block, used during inlining.
8159  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
8160  * @inline_args: if not NULL, contains the arguments to the inline call
8161  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
8162  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
8163  *
8164  * This method is used to turn ECMA IL into Mono's internal Linear IR
8165  * reprensetation.  It is used both for entire methods, as well as
8166  * inlining existing methods.  In the former case, the @start_bblock,
8167  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
8168  * inline_offset is set to zero.
8169  *
8170  * Returns: the inline cost, or -1 if there was an error processing this method.
8171  */
8172 int
8173 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8174                    MonoInst *return_var, MonoInst **inline_args,
8175                    guint inline_offset, gboolean is_virtual_call)
8176 {
8177         MonoError error;
8178         MonoInst *ins, **sp, **stack_start;
8179         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8180         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8181         MonoMethod *cmethod, *method_definition;
8182         MonoInst **arg_array;
8183         MonoMethodHeader *header;
8184         MonoImage *image;
8185         guint32 token, ins_flag;
8186         MonoClass *klass;
8187         MonoClass *constrained_class = NULL;
8188         unsigned char *ip, *end, *target, *err_pos;
8189         MonoMethodSignature *sig;
8190         MonoGenericContext *generic_context = NULL;
8191         MonoGenericContainer *generic_container = NULL;
8192         MonoType **param_types;
8193         int i, n, start_new_bblock, dreg;
8194         int num_calls = 0, inline_costs = 0;
8195         int breakpoint_id = 0;
8196         guint num_args;
8197         GSList *class_inits = NULL;
8198         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8199         int context_used;
8200         gboolean init_locals, seq_points, skip_dead_blocks;
8201         gboolean sym_seq_points = FALSE;
8202         MonoDebugMethodInfo *minfo;
8203         MonoBitSet *seq_point_locs = NULL;
8204         MonoBitSet *seq_point_set_locs = NULL;
8205
8206         cfg->disable_inline = is_jit_optimizer_disabled (method);
8207
8208         /* serialization and xdomain stuff may need access to private fields and methods */
8209         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8210         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8211         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8212         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8213         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8214         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8215
8216         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8217         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8218         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8219         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8220         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8221
8222         image = method->klass->image;
8223         header = mono_method_get_header_checked (method, &cfg->error);
8224         if (!header) {
8225                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8226                 goto exception_exit;
8227         } else {
8228                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
8229         }
8230
8231         generic_container = mono_method_get_generic_container (method);
8232         sig = mono_method_signature (method);
8233         num_args = sig->hasthis + sig->param_count;
8234         ip = (unsigned char*)header->code;
8235         cfg->cil_start = ip;
8236         end = ip + header->code_size;
8237         cfg->stat_cil_code_size += header->code_size;
8238
8239         seq_points = cfg->gen_seq_points && cfg->method == method;
8240
8241         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8242                 /* We could hit a seq point before attaching to the JIT (#8338) */
8243                 seq_points = FALSE;
8244         }
8245
8246         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8247                 minfo = mono_debug_lookup_method (method);
8248                 if (minfo) {
8249                         MonoSymSeqPoint *sps;
8250                         int i, n_il_offsets;
8251
8252                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8253                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8254                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8255                         sym_seq_points = TRUE;
8256                         for (i = 0; i < n_il_offsets; ++i) {
8257                                 if (sps [i].il_offset < header->code_size)
8258                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8259                         }
8260                         g_free (sps);
8261                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8262                         /* Methods without line number info like auto-generated property accessors */
8263                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8264                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8265                         sym_seq_points = TRUE;
8266                 }
8267         }
8268
8269         /*
8270          * Methods without init_locals set could cause asserts in various passes
8271          * (#497220). To work around this, we emit dummy initialization opcodes
8272          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8273          * on some platforms.
8274          */
8275         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8276                 init_locals = header->init_locals;
8277         else
8278                 init_locals = TRUE;
8279
8280         method_definition = method;
8281         while (method_definition->is_inflated) {
8282                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8283                 method_definition = imethod->declaring;
8284         }
8285
8286         /* SkipVerification is not allowed if core-clr is enabled */
8287         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8288                 dont_verify = TRUE;
8289                 dont_verify_stloc = TRUE;
8290         }
8291
8292         if (sig->is_inflated)
8293                 generic_context = mono_method_get_context (method);
8294         else if (generic_container)
8295                 generic_context = &generic_container->context;
8296         cfg->generic_context = generic_context;
8297
8298         if (!cfg->gshared)
8299                 g_assert (!sig->has_type_parameters);
8300
8301         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8302                 g_assert (method->is_inflated);
8303                 g_assert (mono_method_get_context (method)->method_inst);
8304         }
8305         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8306                 g_assert (sig->generic_param_count);
8307
8308         if (cfg->method == method) {
8309                 cfg->real_offset = 0;
8310         } else {
8311                 cfg->real_offset = inline_offset;
8312         }
8313
8314         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8315         cfg->cil_offset_to_bb_len = header->code_size;
8316
8317         cfg->current_method = method;
8318
8319         if (cfg->verbose_level > 2)
8320                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8321
8322         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8323         if (sig->hasthis)
8324                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8325         for (n = 0; n < sig->param_count; ++n)
8326                 param_types [n + sig->hasthis] = sig->params [n];
8327         cfg->arg_types = param_types;
8328
8329         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8330         if (cfg->method == method) {
8331
8332                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8333                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8334
8335                 /* ENTRY BLOCK */
8336                 NEW_BBLOCK (cfg, start_bblock);
8337                 cfg->bb_entry = start_bblock;
8338                 start_bblock->cil_code = NULL;
8339                 start_bblock->cil_length = 0;
8340
8341                 /* EXIT BLOCK */
8342                 NEW_BBLOCK (cfg, end_bblock);
8343                 cfg->bb_exit = end_bblock;
8344                 end_bblock->cil_code = NULL;
8345                 end_bblock->cil_length = 0;
8346                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8347                 g_assert (cfg->num_bblocks == 2);
8348
8349                 arg_array = cfg->args;
8350
8351                 if (header->num_clauses) {
8352                         cfg->spvars = g_hash_table_new (NULL, NULL);
8353                         cfg->exvars = g_hash_table_new (NULL, NULL);
8354                 }
8355                 /* handle exception clauses */
8356                 for (i = 0; i < header->num_clauses; ++i) {
8357                         MonoBasicBlock *try_bb;
8358                         MonoExceptionClause *clause = &header->clauses [i];
8359                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8360
8361                         try_bb->real_offset = clause->try_offset;
8362                         try_bb->try_start = TRUE;
8363                         try_bb->region = ((i + 1) << 8) | clause->flags;
8364                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8365                         tblock->real_offset = clause->handler_offset;
8366                         tblock->flags |= BB_EXCEPTION_HANDLER;
8367
8368                         /*
8369                          * Linking the try block with the EH block hinders inlining as we won't be able to
8370                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8371                          */
8372                         if (COMPILE_LLVM (cfg))
8373                                 link_bblock (cfg, try_bb, tblock);
8374
8375                         if (*(ip + clause->handler_offset) == CEE_POP)
8376                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8377
8378                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8379                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8380                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8381                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8382                                 MONO_ADD_INS (tblock, ins);
8383
8384                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8385                                         /* finally clauses already have a seq point */
8386                                         /* seq points for filter clauses are emitted below */
8387                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8388                                         MONO_ADD_INS (tblock, ins);
8389                                 }
8390
8391                                 /* todo: is a fault block unsafe to optimize? */
8392                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8393                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8394                         }
8395
8396                         /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
8397                           while (p < end) {
8398                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8399                           }*/
8400                         /* catch and filter blocks get the exception object on the stack */
8401                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8402                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8403
8404                                 /* mostly like handle_stack_args (), but just sets the input args */
8405                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8406                                 tblock->in_scount = 1;
8407                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8408                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8409
8410                                 cfg->cbb = tblock;
8411
8412 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8413                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8414                                 if (!cfg->compile_llvm) {
8415                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8416                                         ins->dreg = tblock->in_stack [0]->dreg;
8417                                         MONO_ADD_INS (tblock, ins);
8418                                 }
8419 #else
8420                                 MonoInst *dummy_use;
8421
8422                                 /*
8423                                  * Add a dummy use for the exvar so its liveness info will be
8424                                  * correct.
8425                                  */
8426                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8427 #endif
8428
8429                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8430                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8431                                         MONO_ADD_INS (tblock, ins);
8432                                 }
8433
8434                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8435                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8436                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8437                                         tblock->real_offset = clause->data.filter_offset;
8438                                         tblock->in_scount = 1;
8439                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8440                                         /* The filter block shares the exvar with the handler block */
8441                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8442                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8443                                         MONO_ADD_INS (tblock, ins);
8444                                 }
8445                         }
8446
8447                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8448                                         clause->data.catch_class &&
8449                                         cfg->gshared &&
8450                                         mono_class_check_context_used (clause->data.catch_class)) {
8451                                 /*
8452                                  * In shared generic code with catch
8453                                  * clauses containing type variables
8454                                  * the exception handling code has to
8455                                  * be able to get to the rgctx.
8456                                  * Therefore we have to make sure that
8457                                  * the vtable/mrgctx argument (for
8458                                  * static or generic methods) or the
8459                                  * "this" argument (for non-static
8460                                  * methods) are live.
8461                                  */
8462                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8463                                                 mini_method_get_context (method)->method_inst ||
8464                                                 method->klass->valuetype) {
8465                                         mono_get_vtable_var (cfg);
8466                                 } else {
8467                                         MonoInst *dummy_use;
8468
8469                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8470                                 }
8471                         }
8472                 }
8473         } else {
8474                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8475                 cfg->cbb = start_bblock;
8476                 cfg->args = arg_array;
8477                 mono_save_args (cfg, sig, inline_args);
8478         }
8479
8480         /* FIRST CODE BLOCK */
8481         NEW_BBLOCK (cfg, tblock);
8482         tblock->cil_code = ip;
8483         cfg->cbb = tblock;
8484         cfg->ip = ip;
8485
8486         ADD_BBLOCK (cfg, tblock);
8487
8488         if (cfg->method == method) {
8489                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8490                 if (breakpoint_id) {
8491                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8492                         MONO_ADD_INS (cfg->cbb, ins);
8493                 }
8494         }
8495
8496         /* we use a separate basic block for the initialization code */
8497         NEW_BBLOCK (cfg, init_localsbb);
8498         if (cfg->method == method)
8499                 cfg->bb_init = init_localsbb;
8500         init_localsbb->real_offset = cfg->real_offset;
8501         start_bblock->next_bb = init_localsbb;
8502         init_localsbb->next_bb = cfg->cbb;
8503         link_bblock (cfg, start_bblock, init_localsbb);
8504         link_bblock (cfg, init_localsbb, cfg->cbb);
8505
8506         cfg->cbb = init_localsbb;
8507
8508         if (cfg->gsharedvt && cfg->method == method) {
8509                 MonoGSharedVtMethodInfo *info;
8510                 MonoInst *var, *locals_var;
8511                 int dreg;
8512
8513                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8514                 info->method = cfg->method;
8515                 info->count_entries = 16;
8516                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8517                 cfg->gsharedvt_info = info;
8518
8519                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8520                 /* prevent it from being register allocated */
8521                 //var->flags |= MONO_INST_VOLATILE;
8522                 cfg->gsharedvt_info_var = var;
8523
8524                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8525                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8526
8527                 /* Allocate locals */
8528                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8529                 /* prevent it from being register allocated */
8530                 //locals_var->flags |= MONO_INST_VOLATILE;
8531                 cfg->gsharedvt_locals_var = locals_var;
8532
8533                 dreg = alloc_ireg (cfg);
8534                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8535
8536                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8537                 ins->dreg = locals_var->dreg;
8538                 ins->sreg1 = dreg;
8539                 MONO_ADD_INS (cfg->cbb, ins);
8540                 cfg->gsharedvt_locals_var_ins = ins;
8541
8542                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8543                 /*
8544                 if (init_locals)
8545                         ins->flags |= MONO_INST_INIT;
8546                 */
8547         }
8548
8549         if (mono_security_core_clr_enabled ()) {
8550                 /* check if this is native code, e.g. an icall or a p/invoke */
8551                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8552                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8553                         if (wrapped) {
8554                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8555                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8556
8557                                 /* if this ia a native call then it can only be JITted from platform code */
8558                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8559                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8560                                                 MonoException *ex = icall ? mono_get_exception_security () :
8561                                                         mono_get_exception_method_access ();
8562                                                 emit_throw_exception (cfg, ex);
8563                                         }
8564                                 }
8565                         }
8566                 }
8567         }
8568
8569         CHECK_CFG_EXCEPTION;
8570
8571         if (header->code_size == 0)
8572                 UNVERIFIED;
8573
8574         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8575                 ip = err_pos;
8576                 UNVERIFIED;
8577         }
8578
8579         if (cfg->method == method)
8580                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8581
8582         for (n = 0; n < header->num_locals; ++n) {
8583                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8584                         UNVERIFIED;
8585         }
8586         class_inits = NULL;
8587
8588         /* We force the vtable variable here for all shared methods
8589            for the possibility that they might show up in a stack
8590            trace where their exact instantiation is needed. */
8591         if (cfg->gshared && method == cfg->method) {
8592                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8593                                 mini_method_get_context (method)->method_inst ||
8594                                 method->klass->valuetype) {
8595                         mono_get_vtable_var (cfg);
8596                 } else {
8597                         /* FIXME: Is there a better way to do this?
8598                            We need the variable live for the duration
8599                            of the whole method. */
8600                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8601                 }
8602         }
8603
8604         /* add a check for this != NULL to inlined methods */
8605         if (is_virtual_call) {
8606                 MonoInst *arg_ins;
8607
8608                 NEW_ARGLOAD (cfg, arg_ins, 0);
8609                 MONO_ADD_INS (cfg->cbb, arg_ins);
8610                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8611         }
8612
8613         skip_dead_blocks = !dont_verify;
8614         if (skip_dead_blocks) {
8615                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8616                 CHECK_CFG_ERROR;
8617                 g_assert (bb);
8618         }
8619
8620         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8621         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8622
8623         ins_flag = 0;
8624         start_new_bblock = 0;
8625         while (ip < end) {
8626                 if (cfg->method == method)
8627                         cfg->real_offset = ip - header->code;
8628                 else
8629                         cfg->real_offset = inline_offset;
8630                 cfg->ip = ip;
8631
8632                 context_used = 0;
8633
8634                 if (start_new_bblock) {
8635                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8636                         if (start_new_bblock == 2) {
8637                                 g_assert (ip == tblock->cil_code);
8638                         } else {
8639                                 GET_BBLOCK (cfg, tblock, ip);
8640                         }
8641                         cfg->cbb->next_bb = tblock;
8642                         cfg->cbb = tblock;
8643                         start_new_bblock = 0;
8644                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8645                                 if (cfg->verbose_level > 3)
8646                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8647                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8648                                 *sp++ = ins;
8649                         }
8650                         if (class_inits)
8651                                 g_slist_free (class_inits);
8652                         class_inits = NULL;
8653                 } else {
8654                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8655                                 link_bblock (cfg, cfg->cbb, tblock);
8656                                 if (sp != stack_start) {
8657                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8658                                         sp = stack_start;
8659                                         CHECK_UNVERIFIABLE (cfg);
8660                                 }
8661                                 cfg->cbb->next_bb = tblock;
8662                                 cfg->cbb = tblock;
8663                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8664                                         if (cfg->verbose_level > 3)
8665                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8666                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8667                                         *sp++ = ins;
8668                                 }
8669                                 g_slist_free (class_inits);
8670                                 class_inits = NULL;
8671                         }
8672                 }
8673
8674                 if (skip_dead_blocks) {
8675                         int ip_offset = ip - header->code;
8676
8677                         if (ip_offset == bb->end)
8678                                 bb = bb->next;
8679
8680                         if (bb->dead) {
8681                                 int op_size = mono_opcode_size (ip, end);
8682                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8683
8684                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8685
8686                                 if (ip_offset + op_size == bb->end) {
8687                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8688                                         MONO_ADD_INS (cfg->cbb, ins);
8689                                         start_new_bblock = 1;
8690                                 }
8691
8692                                 ip += op_size;
8693                                 continue;
8694                         }
8695                 }
8696                 /*
8697                  * Sequence points are points where the debugger can place a breakpoint.
8698                  * Currently, we generate these automatically at points where the IL
8699                  * stack is empty.
8700                  */
8701                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8702                         /*
8703                          * Make methods interruptable at the beginning, and at the targets of
8704                          * backward branches.
8705                          * Also, do this at the start of every bblock in methods with clauses too,
8706                          * to be able to handle instructions with inprecise control flow like
8707                          * throw/endfinally.
8708                          * Backward branches are handled at the end of method-to-ir ().
8709                          */
8710                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8711                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8712
8713                         /* Avoid sequence points on empty IL like .volatile */
8714                         // FIXME: Enable this
8715                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8716                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8717                         if ((sp != stack_start) && !sym_seq_point)
8718                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8719                         MONO_ADD_INS (cfg->cbb, ins);
8720
8721                         if (sym_seq_points)
8722                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8723                 }
8724
8725                 cfg->cbb->real_offset = cfg->real_offset;
8726
8727                 if ((cfg->method == method) && cfg->coverage_info) {
8728                         guint32 cil_offset = ip - header->code;
8729                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8730
8731                         /* TODO: Use an increment here */
8732 #if defined(TARGET_X86)
8733                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8734                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8735                         ins->inst_imm = 1;
8736                         MONO_ADD_INS (cfg->cbb, ins);
8737 #else
8738                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8739                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8740 #endif
8741                 }
8742
8743                 if (cfg->verbose_level > 3)
8744                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8745
8746                 switch (*ip) {
8747                 case CEE_NOP:
8748                         if (seq_points && !sym_seq_points && sp != stack_start) {
8749                                 /*
8750                                  * The C# compiler uses these nops to notify the JIT that it should
8751                                  * insert seq points.
8752                                  */
8753                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8754                                 MONO_ADD_INS (cfg->cbb, ins);
8755                         }
8756                         if (cfg->keep_cil_nops)
8757                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8758                         else
8759                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8760                         ip++;
8761                         MONO_ADD_INS (cfg->cbb, ins);
8762                         break;
8763                 case CEE_BREAK:
8764                         if (should_insert_brekpoint (cfg->method)) {
8765                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8766                         } else {
8767                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8768                         }
8769                         ip++;
8770                         MONO_ADD_INS (cfg->cbb, ins);
8771                         break;
8772                 case CEE_LDARG_0:
8773                 case CEE_LDARG_1:
8774                 case CEE_LDARG_2:
8775                 case CEE_LDARG_3:
8776                         CHECK_STACK_OVF (1);
8777                         n = (*ip)-CEE_LDARG_0;
8778                         CHECK_ARG (n);
8779                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8780                         ip++;
8781                         *sp++ = ins;
8782                         break;
8783                 case CEE_LDLOC_0:
8784                 case CEE_LDLOC_1:
8785                 case CEE_LDLOC_2:
8786                 case CEE_LDLOC_3:
8787                         CHECK_STACK_OVF (1);
8788                         n = (*ip)-CEE_LDLOC_0;
8789                         CHECK_LOCAL (n);
8790                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8791                         ip++;
8792                         *sp++ = ins;
8793                         break;
8794                 case CEE_STLOC_0:
8795                 case CEE_STLOC_1:
8796                 case CEE_STLOC_2:
8797                 case CEE_STLOC_3: {
8798                         CHECK_STACK (1);
8799                         n = (*ip)-CEE_STLOC_0;
8800                         CHECK_LOCAL (n);
8801                         --sp;
8802                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8803                                 UNVERIFIED;
8804                         emit_stloc_ir (cfg, sp, header, n);
8805                         ++ip;
8806                         inline_costs += 1;
8807                         break;
8808                         }
8809                 case CEE_LDARG_S:
8810                         CHECK_OPSIZE (2);
8811                         CHECK_STACK_OVF (1);
8812                         n = ip [1];
8813                         CHECK_ARG (n);
8814                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8815                         *sp++ = ins;
8816                         ip += 2;
8817                         break;
8818                 case CEE_LDARGA_S:
8819                         CHECK_OPSIZE (2);
8820                         CHECK_STACK_OVF (1);
8821                         n = ip [1];
8822                         CHECK_ARG (n);
8823                         NEW_ARGLOADA (cfg, ins, n);
8824                         MONO_ADD_INS (cfg->cbb, ins);
8825                         *sp++ = ins;
8826                         ip += 2;
8827                         break;
8828                 case CEE_STARG_S:
8829                         CHECK_OPSIZE (2);
8830                         CHECK_STACK (1);
8831                         --sp;
8832                         n = ip [1];
8833                         CHECK_ARG (n);
8834                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8835                                 UNVERIFIED;
8836                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8837                         ip += 2;
8838                         break;
8839                 case CEE_LDLOC_S:
8840                         CHECK_OPSIZE (2);
8841                         CHECK_STACK_OVF (1);
8842                         n = ip [1];
8843                         CHECK_LOCAL (n);
8844                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8845                         *sp++ = ins;
8846                         ip += 2;
8847                         break;
8848                 case CEE_LDLOCA_S: {
8849                         unsigned char *tmp_ip;
8850                         CHECK_OPSIZE (2);
8851                         CHECK_STACK_OVF (1);
8852                         CHECK_LOCAL (ip [1]);
8853
8854                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8855                                 ip = tmp_ip;
8856                                 inline_costs += 1;
8857                                 break;
8858                         }
8859
8860                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8861                         *sp++ = ins;
8862                         ip += 2;
8863                         break;
8864                 }
8865                 case CEE_STLOC_S:
8866                         CHECK_OPSIZE (2);
8867                         CHECK_STACK (1);
8868                         --sp;
8869                         CHECK_LOCAL (ip [1]);
8870                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8871                                 UNVERIFIED;
8872                         emit_stloc_ir (cfg, sp, header, ip [1]);
8873                         ip += 2;
8874                         inline_costs += 1;
8875                         break;
8876                 case CEE_LDNULL:
8877                         CHECK_STACK_OVF (1);
8878                         EMIT_NEW_PCONST (cfg, ins, NULL);
8879                         ins->type = STACK_OBJ;
8880                         ++ip;
8881                         *sp++ = ins;
8882                         break;
8883                 case CEE_LDC_I4_M1:
8884                         CHECK_STACK_OVF (1);
8885                         EMIT_NEW_ICONST (cfg, ins, -1);
8886                         ++ip;
8887                         *sp++ = ins;
8888                         break;
8889                 case CEE_LDC_I4_0:
8890                 case CEE_LDC_I4_1:
8891                 case CEE_LDC_I4_2:
8892                 case CEE_LDC_I4_3:
8893                 case CEE_LDC_I4_4:
8894                 case CEE_LDC_I4_5:
8895                 case CEE_LDC_I4_6:
8896                 case CEE_LDC_I4_7:
8897                 case CEE_LDC_I4_8:
8898                         CHECK_STACK_OVF (1);
8899                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8900                         ++ip;
8901                         *sp++ = ins;
8902                         break;
8903                 case CEE_LDC_I4_S:
8904                         CHECK_OPSIZE (2);
8905                         CHECK_STACK_OVF (1);
8906                         ++ip;
8907                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8908                         ++ip;
8909                         *sp++ = ins;
8910                         break;
8911                 case CEE_LDC_I4:
8912                         CHECK_OPSIZE (5);
8913                         CHECK_STACK_OVF (1);
8914                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8915                         ip += 5;
8916                         *sp++ = ins;
8917                         break;
8918                 case CEE_LDC_I8:
8919                         CHECK_OPSIZE (9);
8920                         CHECK_STACK_OVF (1);
8921                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8922                         ins->type = STACK_I8;
8923                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8924                         ++ip;
8925                         ins->inst_l = (gint64)read64 (ip);
8926                         MONO_ADD_INS (cfg->cbb, ins);
8927                         ip += 8;
8928                         *sp++ = ins;
8929                         break;
8930                 case CEE_LDC_R4: {
8931                         float *f;
8932                         gboolean use_aotconst = FALSE;
8933
8934 #ifdef TARGET_POWERPC
8935                         /* FIXME: Clean this up */
8936                         if (cfg->compile_aot)
8937                                 use_aotconst = TRUE;
8938 #endif
8939
8940                         /* FIXME: we should really allocate this only late in the compilation process */
8941                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8942                         CHECK_OPSIZE (5);
8943                         CHECK_STACK_OVF (1);
8944
8945                         if (use_aotconst) {
8946                                 MonoInst *cons;
8947                                 int dreg;
8948
8949                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8950
8951                                 dreg = alloc_freg (cfg);
8952                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8953                                 ins->type = cfg->r4_stack_type;
8954                         } else {
8955                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8956                                 ins->type = cfg->r4_stack_type;
8957                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8958                                 ins->inst_p0 = f;
8959                                 MONO_ADD_INS (cfg->cbb, ins);
8960                         }
8961                         ++ip;
8962                         readr4 (ip, f);
8963                         ip += 4;
8964                         *sp++ = ins;
8965                         break;
8966                 }
8967                 case CEE_LDC_R8: {
8968                         double *d;
8969                         gboolean use_aotconst = FALSE;
8970
8971 #ifdef TARGET_POWERPC
8972                         /* FIXME: Clean this up */
8973                         if (cfg->compile_aot)
8974                                 use_aotconst = TRUE;
8975 #endif
8976
8977                         /* FIXME: we should really allocate this only late in the compilation process */
8978                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8979                         CHECK_OPSIZE (9);
8980                         CHECK_STACK_OVF (1);
8981
8982                         if (use_aotconst) {
8983                                 MonoInst *cons;
8984                                 int dreg;
8985
8986                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8987
8988                                 dreg = alloc_freg (cfg);
8989                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8990                                 ins->type = STACK_R8;
8991                         } else {
8992                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8993                                 ins->type = STACK_R8;
8994                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8995                                 ins->inst_p0 = d;
8996                                 MONO_ADD_INS (cfg->cbb, ins);
8997                         }
8998                         ++ip;
8999                         readr8 (ip, d);
9000                         ip += 8;
9001                         *sp++ = ins;
9002                         break;
9003                 }
9004                 case CEE_DUP: {
9005                         MonoInst *temp, *store;
9006                         CHECK_STACK (1);
9007                         CHECK_STACK_OVF (1);
9008                         sp--;
9009                         ins = *sp;
9010
9011                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
9012                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
9013
9014                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
9015                         *sp++ = ins;
9016
9017                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
9018                         *sp++ = ins;
9019
9020                         ++ip;
9021                         inline_costs += 2;
9022                         break;
9023                 }
9024                 case CEE_POP:
9025                         CHECK_STACK (1);
9026                         ip++;
9027                         --sp;
9028
9029 #ifdef TARGET_X86
9030                         if (sp [0]->type == STACK_R8)
9031                                 /* we need to pop the value from the x86 FP stack */
9032                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
9033 #endif
9034                         break;
9035                 case CEE_JMP: {
9036                         MonoCallInst *call;
9037                         MonoMethodSignature *fsig;
9038                         int i, n;
9039
9040                         INLINE_FAILURE ("jmp");
9041                         GSHAREDVT_FAILURE (*ip);
9042
9043                         CHECK_OPSIZE (5);
9044                         if (stack_start != sp)
9045                                 UNVERIFIED;
9046                         token = read32 (ip + 1);
9047                         /* FIXME: check the signature matches */
9048                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9049                         CHECK_CFG_ERROR;
9050
9051                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9052                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9053
9054                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9055
9056                         fsig = mono_method_signature (cmethod);
9057                         n = fsig->param_count + fsig->hasthis;
9058                         if (cfg->llvm_only) {
9059                                 MonoInst **args;
9060
9061                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9062                                 for (i = 0; i < n; ++i)
9063                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9064                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9065                                 /*
9066                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9067                                  * have to emit a normal return since llvm expects it.
9068                                  */
9069                                 if (cfg->ret)
9070                                         emit_setret (cfg, ins);
9071                                 MONO_INST_NEW (cfg, ins, OP_BR);
9072                                 ins->inst_target_bb = end_bblock;
9073                                 MONO_ADD_INS (cfg->cbb, ins);
9074                                 link_bblock (cfg, cfg->cbb, end_bblock);
9075                                 ip += 5;
9076                                 break;
9077                         } else if (cfg->backend->have_op_tail_call) {
9078                                 /* Handle tail calls similarly to calls */
9079                                 DISABLE_AOT (cfg);
9080
9081                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9082                                 call->method = cmethod;
9083                                 call->tail_call = TRUE;
9084                                 call->signature = mono_method_signature (cmethod);
9085                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9086                                 call->inst.inst_p0 = cmethod;
9087                                 for (i = 0; i < n; ++i)
9088                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9089
9090                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
9091                                         call->vret_var = cfg->vret_addr;
9092
9093                                 mono_arch_emit_call (cfg, call);
9094                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9095                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9096                         } else {
9097                                 for (i = 0; i < num_args; ++i)
9098                                         /* Prevent arguments from being optimized away */
9099                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9100
9101                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9102                                 ins = (MonoInst*)call;
9103                                 ins->inst_p0 = cmethod;
9104                                 MONO_ADD_INS (cfg->cbb, ins);
9105                         }
9106
9107                         ip += 5;
9108                         start_new_bblock = 1;
9109                         break;
9110                 }
9111                 case CEE_CALLI: {
9112                         MonoInst *addr;
9113                         MonoMethodSignature *fsig;
9114
9115                         CHECK_OPSIZE (5);
9116                         token = read32 (ip + 1);
9117
9118                         ins = NULL;
9119
9120                         //GSHAREDVT_FAILURE (*ip);
9121                         cmethod = NULL;
9122                         CHECK_STACK (1);
9123                         --sp;
9124                         addr = *sp;
9125                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9126                         CHECK_CFG_ERROR;
9127
9128                         if (method->dynamic && fsig->pinvoke) {
9129                                 MonoInst *args [3];
9130
9131                                 /*
9132                                  * This is a call through a function pointer using a pinvoke
9133                                  * signature. Have to create a wrapper and call that instead.
9134                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9135                                  * instead based on the signature.
9136                                  */
9137                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9138                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9139                                 args [2] = addr;
9140                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9141                         }
9142
9143                         n = fsig->param_count + fsig->hasthis;
9144
9145                         CHECK_STACK (n);
9146
9147                         //g_assert (!virtual_ || fsig->hasthis);
9148
9149                         sp -= n;
9150
9151                         inline_costs += 10 * num_calls++;
9152
9153                         /*
9154                          * Making generic calls out of gsharedvt methods.
9155                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9156                          * patching gshared method addresses into a gsharedvt method.
9157                          */
9158                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9159                                 /*
9160                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9161                                  */
9162                                 MonoInst *callee = addr;
9163
9164                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9165                                         /* Not tested */
9166                                         GSHAREDVT_FAILURE (*ip);
9167
9168                                 if (cfg->llvm_only)
9169                                         // FIXME:
9170                                         GSHAREDVT_FAILURE (*ip);
9171
9172                                 addr = emit_get_rgctx_sig (cfg, context_used,
9173                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9174                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9175                                 goto calli_end;
9176                         }
9177
9178                         /* Prevent inlining of methods with indirect calls */
9179                         INLINE_FAILURE ("indirect call");
9180
9181                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9182                                 MonoJumpInfoType info_type;
9183                                 gpointer info_data;
9184
9185                                 /*
9186                                  * Instead of emitting an indirect call, emit a direct call
9187                                  * with the contents of the aotconst as the patch info.
9188                                  */
9189                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9190                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9191                                         info_data = addr->inst_p0;
9192                                 } else {
9193                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9194                                         info_data = addr->inst_right->inst_left;
9195                                 }
9196
9197                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9198                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9199                                         NULLIFY_INS (addr);
9200                                         goto calli_end;
9201                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9202                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9203                                         NULLIFY_INS (addr);
9204                                         goto calli_end;
9205                                 }
9206                         }
9207                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9208
9209                         calli_end:
9210
9211                         /* End of call, INS should contain the result of the call, if any */
9212
9213                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9214                                 g_assert (ins);
9215                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9216                         }
9217
9218                         CHECK_CFG_EXCEPTION;
9219
9220                         ip += 5;
9221                         ins_flag = 0;
9222                         constrained_class = NULL;
9223                         break;
9224                 }
9225                 case CEE_CALL:
9226                 case CEE_CALLVIRT: {
9227                         MonoInst *addr = NULL;
9228                         MonoMethodSignature *fsig = NULL;
9229                         int array_rank = 0;
9230                         int virtual_ = *ip == CEE_CALLVIRT;
9231                         gboolean pass_imt_from_rgctx = FALSE;
9232                         MonoInst *imt_arg = NULL;
9233                         MonoInst *keep_this_alive = NULL;
9234                         gboolean pass_vtable = FALSE;
9235                         gboolean pass_mrgctx = FALSE;
9236                         MonoInst *vtable_arg = NULL;
9237                         gboolean check_this = FALSE;
9238                         gboolean supported_tail_call = FALSE;
9239                         gboolean tail_call = FALSE;
9240                         gboolean need_seq_point = FALSE;
9241                         guint32 call_opcode = *ip;
9242                         gboolean emit_widen = TRUE;
9243                         gboolean push_res = TRUE;
9244                         gboolean skip_ret = FALSE;
9245                         gboolean delegate_invoke = FALSE;
9246                         gboolean direct_icall = FALSE;
9247                         gboolean constrained_partial_call = FALSE;
9248                         MonoMethod *cil_method;
9249
9250                         CHECK_OPSIZE (5);
9251                         token = read32 (ip + 1);
9252
9253                         ins = NULL;
9254
9255                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9256                         CHECK_CFG_ERROR;
9257
9258                         cil_method = cmethod;
9259
9260                         if (constrained_class) {
9261                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9262                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9263                                                 g_assert (!cmethod->klass->valuetype);
9264                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9265                                                         constrained_partial_call = TRUE;
9266                                         }
9267                                 }
9268
9269                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9270                                         if (cfg->verbose_level > 2)
9271                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9272                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9273                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9274                                                   cfg->gshared)) {
9275                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9276                                                 CHECK_CFG_ERROR;
9277                                         }
9278                                 } else {
9279                                         if (cfg->verbose_level > 2)
9280                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9281
9282                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9283                                                 /*
9284                                                  * This is needed since get_method_constrained can't find
9285                                                  * the method in klass representing a type var.
9286                                                  * The type var is guaranteed to be a reference type in this
9287                                                  * case.
9288                                                  */
9289                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9290                                                         g_assert (!cmethod->klass->valuetype);
9291                                         } else {
9292                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9293                                                 CHECK_CFG_ERROR;
9294                                         }
9295                                 }
9296                         }
9297
9298                         if (!dont_verify && !cfg->skip_visibility) {
9299                                 MonoMethod *target_method = cil_method;
9300                                 if (method->is_inflated) {
9301                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9302                                         CHECK_CFG_ERROR;
9303                                 }
9304                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9305                                         !mono_method_can_access_method (method, cil_method))
9306                                         emit_method_access_failure (cfg, method, cil_method);
9307                         }
9308
9309                         if (mono_security_core_clr_enabled ())
9310                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9311
9312                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9313                                 /* MS.NET seems to silently convert this to a callvirt */
9314                                 virtual_ = 1;
9315
9316                         {
9317                                 /*
9318                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9319                                  * converts to a callvirt.
9320                                  *
9321                                  * tests/bug-515884.il is an example of this behavior
9322                                  */
9323                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9324                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9325                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9326                                         virtual_ = 1;
9327                         }
9328
9329                         if (!cmethod->klass->inited)
9330                                 if (!mono_class_init (cmethod->klass))
9331                                         TYPE_LOAD_ERROR (cmethod->klass);
9332
9333                         fsig = mono_method_signature (cmethod);
9334                         if (!fsig)
9335                                 LOAD_ERROR;
9336                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9337                                 mini_class_is_system_array (cmethod->klass)) {
9338                                 array_rank = cmethod->klass->rank;
9339                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9340                                 direct_icall = TRUE;
9341                         } else if (fsig->pinvoke) {
9342                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9343                                 fsig = mono_method_signature (wrapper);
9344                         } else if (constrained_class) {
9345                         } else {
9346                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9347                                 CHECK_CFG_ERROR;
9348                         }
9349
9350                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9351                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9352
9353                         /* See code below */
9354                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9355                                 MonoBasicBlock *tbb;
9356
9357                                 GET_BBLOCK (cfg, tbb, ip + 5);
9358                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9359                                         /*
9360                                          * We want to extend the try block to cover the call, but we can't do it if the
9361                                          * call is made directly since its followed by an exception check.
9362                                          */
9363                                         direct_icall = FALSE;
9364                                 }
9365                         }
9366
9367                         mono_save_token_info (cfg, image, token, cil_method);
9368
9369                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9370                                 need_seq_point = TRUE;
9371
9372                         /* Don't support calls made using type arguments for now */
9373                         /*
9374                           if (cfg->gsharedvt) {
9375                           if (mini_is_gsharedvt_signature (fsig))
9376                           GSHAREDVT_FAILURE (*ip);
9377                           }
9378                         */
9379
9380                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9381                                 g_assert_not_reached ();
9382
9383                         n = fsig->param_count + fsig->hasthis;
9384
9385                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
9386                                 UNVERIFIED;
9387
9388                         if (!cfg->gshared)
9389                                 g_assert (!mono_method_check_context_used (cmethod));
9390
9391                         CHECK_STACK (n);
9392
9393                         //g_assert (!virtual_ || fsig->hasthis);
9394
9395                         sp -= n;
9396
9397                         /*
9398                          * We have the `constrained.' prefix opcode.
9399                          */
9400                         if (constrained_class) {
9401                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9402                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9403                                                 /* The 'Own method' case below */
9404                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
9405                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9406                                         } else {
9407                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9408                                                 CHECK_CFG_EXCEPTION;
9409                                                 g_assert (ins);
9410                                                 goto call_end;
9411                                         }
9412                                 }
9413
9414                                 if (constrained_partial_call) {
9415                                         gboolean need_box = TRUE;
9416
9417                                         /*
9418                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9419                                          * called method is not known at compile time either. The called method could end up being
9420                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9421                                          * to box the receiver.
9422                                          * A simple solution would be to box always and make a normal virtual call, but that would
9423                                          * be bad performance wise.
9424                                          */
9425                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
9426                                                 /*
9427                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9428                                                  */
9429                                                 need_box = FALSE;
9430                                         }
9431
9432                                         if (!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9433                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9434                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9435                                                 ins->klass = constrained_class;
9436                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9437                                                 CHECK_CFG_EXCEPTION;
9438                                         } else if (need_box) {
9439                                                 MonoInst *box_type;
9440                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9441                                                 MonoInst *nonbox_call;
9442
9443                                                 /*
9444                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9445                                                  * if needed.
9446                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9447                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9448                                                  */
9449                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9450
9451                                                 NEW_BBLOCK (cfg, is_ref_bb);
9452                                                 NEW_BBLOCK (cfg, end_bb);
9453
9454                                                 box_type = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_BOX_TYPE);
9455                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9456                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9457
9458                                                 /* Non-ref case */
9459                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9460
9461                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9462
9463                                                 /* Ref case */
9464                                                 MONO_START_BB (cfg, is_ref_bb);
9465                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9466                                                 ins->klass = constrained_class;
9467                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9468                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9469
9470                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9471
9472                                                 MONO_START_BB (cfg, end_bb);
9473                                                 cfg->cbb = end_bb;
9474
9475                                                 nonbox_call->dreg = ins->dreg;
9476                                                 goto call_end;
9477                                         } else {
9478                                                 g_assert (mono_class_is_interface (cmethod->klass));
9479                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9480                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9481                                                 goto call_end;
9482                                         }
9483                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9484                                         /*
9485                                          * The type parameter is instantiated as a valuetype,
9486                                          * but that type doesn't override the method we're
9487                                          * calling, so we need to box `this'.
9488                                          */
9489                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9490                                         ins->klass = constrained_class;
9491                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9492                                         CHECK_CFG_EXCEPTION;
9493                                 } else if (!constrained_class->valuetype) {
9494                                         int dreg = alloc_ireg_ref (cfg);
9495
9496                                         /*
9497                                          * The type parameter is instantiated as a reference
9498                                          * type.  We have a managed pointer on the stack, so
9499                                          * we need to dereference it here.
9500                                          */
9501                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9502                                         ins->type = STACK_OBJ;
9503                                         sp [0] = ins;
9504                                 } else {
9505                                         if (cmethod->klass->valuetype) {
9506                                                 /* Own method */
9507                                         } else {
9508                                                 /* Interface method */
9509                                                 int ioffset, slot;
9510
9511                                                 mono_class_setup_vtable (constrained_class);
9512                                                 CHECK_TYPELOAD (constrained_class);
9513                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9514                                                 if (ioffset == -1)
9515                                                         TYPE_LOAD_ERROR (constrained_class);
9516                                                 slot = mono_method_get_vtable_slot (cmethod);
9517                                                 if (slot == -1)
9518                                                         TYPE_LOAD_ERROR (cmethod->klass);
9519                                                 cmethod = constrained_class->vtable [ioffset + slot];
9520
9521                                                 if (cmethod->klass == mono_defaults.enum_class) {
9522                                                         /* Enum implements some interfaces, so treat this as the first case */
9523                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9524                                                         ins->klass = constrained_class;
9525                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9526                                                         CHECK_CFG_EXCEPTION;
9527                                                 }
9528                                         }
9529                                         virtual_ = 0;
9530                                 }
9531                                 constrained_class = NULL;
9532                         }
9533
9534                         if (check_call_signature (cfg, fsig, sp))
9535                                 UNVERIFIED;
9536
9537                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9538                                 delegate_invoke = TRUE;
9539
9540                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9541                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9542                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9543                                         emit_widen = FALSE;
9544                                 }
9545
9546                                 goto call_end;
9547                         }
9548
9549                         /*
9550                          * If the callee is a shared method, then its static cctor
9551                          * might not get called after the call was patched.
9552                          */
9553                         if (cfg->gshared && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9554                                 emit_class_init (cfg, cmethod->klass);
9555                                 CHECK_TYPELOAD (cmethod->klass);
9556                         }
9557
9558                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9559
9560                         if (cfg->gshared) {
9561                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9562
9563                                 context_used = mini_method_check_context_used (cfg, cmethod);
9564
9565                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
9566                                         /* Generic method interface
9567                                            calls are resolved via a
9568                                            helper function and don't
9569                                            need an imt. */
9570                                         if (!cmethod_context || !cmethod_context->method_inst)
9571                                                 pass_imt_from_rgctx = TRUE;
9572                                 }
9573
9574                                 /*
9575                                  * If a shared method calls another
9576                                  * shared method then the caller must
9577                                  * have a generic sharing context
9578                                  * because the magic trampoline
9579                                  * requires it.  FIXME: We shouldn't
9580                                  * have to force the vtable/mrgctx
9581                                  * variable here.  Instead there
9582                                  * should be a flag in the cfg to
9583                                  * request a generic sharing context.
9584                                  */
9585                                 if (context_used &&
9586                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9587                                         mono_get_vtable_var (cfg);
9588                         }
9589
9590                         if (pass_vtable) {
9591                                 if (context_used) {
9592                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9593                                 } else {
9594                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9595
9596                                         CHECK_TYPELOAD (cmethod->klass);
9597                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9598                                 }
9599                         }
9600
9601                         if (pass_mrgctx) {
9602                                 g_assert (!vtable_arg);
9603
9604                                 if (!cfg->compile_aot) {
9605                                         /*
9606                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9607                                          * for type load errors before.
9608                                          */
9609                                         mono_class_setup_vtable (cmethod->klass);
9610                                         CHECK_TYPELOAD (cmethod->klass);
9611                                 }
9612
9613                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9614
9615                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9616                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9617                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9618                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9619                                         if (virtual_)
9620                                                 check_this = TRUE;
9621                                         virtual_ = 0;
9622                                 }
9623                         }
9624
9625                         if (pass_imt_from_rgctx) {
9626                                 g_assert (!pass_vtable);
9627
9628                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9629                                         cmethod, MONO_RGCTX_INFO_METHOD);
9630                         }
9631
9632                         if (check_this)
9633                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9634
9635                         /* Calling virtual generic methods */
9636                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9637                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9638                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9639                             fsig->generic_param_count &&
9640                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9641                                 !cfg->llvm_only) {
9642                                 MonoInst *this_temp, *this_arg_temp, *store;
9643                                 MonoInst *iargs [4];
9644
9645                                 g_assert (fsig->is_inflated);
9646
9647                                 /* Prevent inlining of methods that contain indirect calls */
9648                                 INLINE_FAILURE ("virtual generic call");
9649
9650                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9651                                         GSHAREDVT_FAILURE (*ip);
9652
9653                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9654                                         g_assert (!imt_arg);
9655                                         if (!context_used)
9656                                                 g_assert (cmethod->is_inflated);
9657                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9658                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9659                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9660                                 } else {
9661                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9662                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9663                                         MONO_ADD_INS (cfg->cbb, store);
9664
9665                                         /* FIXME: This should be a managed pointer */
9666                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9667
9668                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9669                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9670                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9671                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9672                                         addr = mono_emit_jit_icall (cfg,
9673                                                                                                 mono_helper_compile_generic_method, iargs);
9674
9675                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9676
9677                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9678                                 }
9679
9680                                 goto call_end;
9681                         }
9682
9683                         /*
9684                          * Implement a workaround for the inherent races involved in locking:
9685                          * Monitor.Enter ()
9686                          * try {
9687                          * } finally {
9688                          *    Monitor.Exit ()
9689                          * }
9690                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9691                          * try block, the Exit () won't be executed, see:
9692                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9693                          * To work around this, we extend such try blocks to include the last x bytes
9694                          * of the Monitor.Enter () call.
9695                          */
9696                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9697                                 MonoBasicBlock *tbb;
9698
9699                                 GET_BBLOCK (cfg, tbb, ip + 5);
9700                                 /*
9701                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9702                                  * from Monitor.Enter like ArgumentNullException.
9703                                  */
9704                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9705                                         /* Mark this bblock as needing to be extended */
9706                                         tbb->extend_try_block = TRUE;
9707                                 }
9708                         }
9709
9710                         /* Conversion to a JIT intrinsic */
9711                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9712                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9713                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9714                                         emit_widen = FALSE;
9715                                 }
9716                                 goto call_end;
9717                         }
9718                         CHECK_CFG_ERROR;
9719
9720                         /* Inlining */
9721                         if ((cfg->opt & MONO_OPT_INLINE) &&
9722                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9723                             mono_method_check_inlining (cfg, cmethod)) {
9724                                 int costs;
9725                                 gboolean always = FALSE;
9726
9727                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9728                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9729                                         /* Prevent inlining of methods that call wrappers */
9730                                         INLINE_FAILURE ("wrapper call");
9731                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9732                                         always = TRUE;
9733                                 }
9734
9735                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9736                                 if (costs) {
9737                                         cfg->real_offset += 5;
9738
9739                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9740                                                 /* *sp is already set by inline_method */
9741                                                 sp++;
9742                                                 push_res = FALSE;
9743                                         }
9744
9745                                         inline_costs += costs;
9746
9747                                         goto call_end;
9748                                 }
9749                         }
9750
9751                         /* Tail recursion elimination */
9752                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9753                                 gboolean has_vtargs = FALSE;
9754                                 int i;
9755
9756                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9757                                 INLINE_FAILURE ("tail call");
9758
9759                                 /* keep it simple */
9760                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9761                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9762                                                 has_vtargs = TRUE;
9763                                 }
9764
9765                                 if (!has_vtargs) {
9766                                         if (need_seq_point) {
9767                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9768                                                 need_seq_point = FALSE;
9769                                         }
9770                                         for (i = 0; i < n; ++i)
9771                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9772                                         MONO_INST_NEW (cfg, ins, OP_BR);
9773                                         MONO_ADD_INS (cfg->cbb, ins);
9774                                         tblock = start_bblock->out_bb [0];
9775                                         link_bblock (cfg, cfg->cbb, tblock);
9776                                         ins->inst_target_bb = tblock;
9777                                         start_new_bblock = 1;
9778
9779                                         /* skip the CEE_RET, too */
9780                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9781                                                 skip_ret = TRUE;
9782                                         push_res = FALSE;
9783                                         goto call_end;
9784                                 }
9785                         }
9786
9787                         inline_costs += 10 * num_calls++;
9788
9789                         /*
9790                          * Synchronized wrappers.
9791                          * Its hard to determine where to replace a method with its synchronized
9792                          * wrapper without causing an infinite recursion. The current solution is
9793                          * to add the synchronized wrapper in the trampolines, and to
9794                          * change the called method to a dummy wrapper, and resolve that wrapper
9795                          * to the real method in mono_jit_compile_method ().
9796                          */
9797                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9798                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9799                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9800                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9801                         }
9802
9803                         /*
9804                          * Making generic calls out of gsharedvt methods.
9805                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9806                          * patching gshared method addresses into a gsharedvt method.
9807                          */
9808                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
9809                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9810                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9811                                 MonoRgctxInfoType info_type;
9812
9813                                 if (virtual_) {
9814                                         //if (mono_class_is_interface (cmethod->klass))
9815                                                 //GSHAREDVT_FAILURE (*ip);
9816                                         // disable for possible remoting calls
9817                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9818                                                 GSHAREDVT_FAILURE (*ip);
9819                                         if (fsig->generic_param_count) {
9820                                                 /* virtual generic call */
9821                                                 g_assert (!imt_arg);
9822                                                 /* Same as the virtual generic case above */
9823                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9824                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9825                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9826                                                 vtable_arg = NULL;
9827                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
9828                                                 /* This can happen when we call a fully instantiated iface method */
9829                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9830                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9831                                                 vtable_arg = NULL;
9832                                         }
9833                                 }
9834
9835                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9836                                         keep_this_alive = sp [0];
9837
9838                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9839                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9840                                 else
9841                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9842                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9843
9844                                 if (cfg->llvm_only) {
9845                                         // FIXME: Avoid initializing vtable_arg
9846                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9847                                 } else {
9848                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9849                                 }
9850                                 goto call_end;
9851                         }
9852
9853                         /* Generic sharing */
9854
9855                         /*
9856                          * Use this if the callee is gsharedvt sharable too, since
9857                          * at runtime we might find an instantiation so the call cannot
9858                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9859                          */
9860                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9861                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9862                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9863                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9864                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9865                                 INLINE_FAILURE ("gshared");
9866
9867                                 g_assert (cfg->gshared && cmethod);
9868                                 g_assert (!addr);
9869
9870                                 /*
9871                                  * We are compiling a call to a
9872                                  * generic method from shared code,
9873                                  * which means that we have to look up
9874                                  * the method in the rgctx and do an
9875                                  * indirect call.
9876                                  */
9877                                 if (fsig->hasthis)
9878                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9879
9880                                 if (cfg->llvm_only) {
9881                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9882                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9883                                         else
9884                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9885                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9886                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9887                                 } else {
9888                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9889                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9890                                 }
9891                                 goto call_end;
9892                         }
9893
9894                         /* Direct calls to icalls */
9895                         if (direct_icall) {
9896                                 MonoMethod *wrapper;
9897                                 int costs;
9898
9899                                 /* Inline the wrapper */
9900                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9901
9902                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9903                                 g_assert (costs > 0);
9904                                 cfg->real_offset += 5;
9905
9906                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9907                                         /* *sp is already set by inline_method */
9908                                         sp++;
9909                                         push_res = FALSE;
9910                                 }
9911
9912                                 inline_costs += costs;
9913
9914                                 goto call_end;
9915                         }
9916
9917                         /* Array methods */
9918                         if (array_rank) {
9919                                 MonoInst *addr;
9920
9921                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9922                                         MonoInst *val = sp [fsig->param_count];
9923
9924                                         if (val->type == STACK_OBJ) {
9925                                                 MonoInst *iargs [2];
9926
9927                                                 iargs [0] = sp [0];
9928                                                 iargs [1] = val;
9929
9930                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9931                                         }
9932
9933                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9934                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9935                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9936                                                 emit_write_barrier (cfg, addr, val);
9937                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9938                                                 GSHAREDVT_FAILURE (*ip);
9939                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9940                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9941
9942                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9943                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9944                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9945                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9946                                         CHECK_TYPELOAD (cmethod->klass);
9947
9948                                         readonly = FALSE;
9949                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9950                                         ins = addr;
9951                                 } else {
9952                                         g_assert_not_reached ();
9953                                 }
9954
9955                                 emit_widen = FALSE;
9956                                 goto call_end;
9957                         }
9958
9959                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9960                         if (ins)
9961                                 goto call_end;
9962
9963                         /* Tail prefix / tail call optimization */
9964
9965                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9966                         /* FIXME: runtime generic context pointer for jumps? */
9967                         /* FIXME: handle this for generic sharing eventually */
9968                         if ((ins_flag & MONO_INST_TAILCALL) &&
9969                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9970                                 supported_tail_call = TRUE;
9971
9972                         if (supported_tail_call) {
9973                                 MonoCallInst *call;
9974
9975                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9976                                 INLINE_FAILURE ("tail call");
9977
9978                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9979
9980                                 if (cfg->backend->have_op_tail_call) {
9981                                         /* Handle tail calls similarly to normal calls */
9982                                         tail_call = TRUE;
9983                                 } else {
9984                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9985
9986                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9987                                         call->tail_call = TRUE;
9988                                         call->method = cmethod;
9989                                         call->signature = mono_method_signature (cmethod);
9990
9991                                         /*
9992                                          * We implement tail calls by storing the actual arguments into the
9993                                          * argument variables, then emitting a CEE_JMP.
9994                                          */
9995                                         for (i = 0; i < n; ++i) {
9996                                                 /* Prevent argument from being register allocated */
9997                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9998                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9999                                         }
10000                                         ins = (MonoInst*)call;
10001                                         ins->inst_p0 = cmethod;
10002                                         ins->inst_p1 = arg_array [0];
10003                                         MONO_ADD_INS (cfg->cbb, ins);
10004                                         link_bblock (cfg, cfg->cbb, end_bblock);
10005                                         start_new_bblock = 1;
10006
10007                                         // FIXME: Eliminate unreachable epilogs
10008
10009                                         /*
10010                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10011                                          * only reachable from this call.
10012                                          */
10013                                         GET_BBLOCK (cfg, tblock, ip + 5);
10014                                         if (tblock == cfg->cbb || tblock->in_count == 0)
10015                                                 skip_ret = TRUE;
10016                                         push_res = FALSE;
10017
10018                                         goto call_end;
10019                                 }
10020                         }
10021
10022                         /*
10023                          * Virtual calls in llvm-only mode.
10024                          */
10025                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
10026                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
10027                                 goto call_end;
10028                         }
10029
10030                         /* Common call */
10031                         INLINE_FAILURE ("call");
10032                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
10033                                                                                           imt_arg, vtable_arg);
10034
10035                         if (tail_call && !cfg->llvm_only) {
10036                                 link_bblock (cfg, cfg->cbb, end_bblock);
10037                                 start_new_bblock = 1;
10038
10039                                 // FIXME: Eliminate unreachable epilogs
10040
10041                                 /*
10042                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10043                                  * only reachable from this call.
10044                                  */
10045                                 GET_BBLOCK (cfg, tblock, ip + 5);
10046                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10047                                         skip_ret = TRUE;
10048                                 push_res = FALSE;
10049                         }
10050
10051                         call_end:
10052
10053                         /* End of call, INS should contain the result of the call, if any */
10054
10055                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10056                                 g_assert (ins);
10057                                 if (emit_widen)
10058                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10059                                 else
10060                                         *sp++ = ins;
10061                         }
10062
10063                         if (keep_this_alive) {
10064                                 MonoInst *dummy_use;
10065
10066                                 /* See mono_emit_method_call_full () */
10067                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10068                         }
10069
10070                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
10071                                 /*
10072                                  * Clang can convert these calls to tail calls which screw up the stack
10073                                  * walk. This happens even when the -fno-optimize-sibling-calls
10074                                  * option is passed to clang.
10075                                  * Work around this by emitting a dummy call.
10076                                  */
10077                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
10078                         }
10079
10080                         CHECK_CFG_EXCEPTION;
10081
10082                         ip += 5;
10083                         if (skip_ret) {
10084                                 g_assert (*ip == CEE_RET);
10085                                 ip += 1;
10086                         }
10087                         ins_flag = 0;
10088                         constrained_class = NULL;
10089                         if (need_seq_point)
10090                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10091                         break;
10092                 }
10093                 case CEE_RET:
10094                         if (cfg->method != method) {
10095                                 /* return from inlined method */
10096                                 /*
10097                                  * If in_count == 0, that means the ret is unreachable due to
10098                                  * being preceeded by a throw. In that case, inline_method () will
10099                                  * handle setting the return value
10100                                  * (test case: test_0_inline_throw ()).
10101                                  */
10102                                 if (return_var && cfg->cbb->in_count) {
10103                                         MonoType *ret_type = mono_method_signature (method)->ret;
10104
10105                                         MonoInst *store;
10106                                         CHECK_STACK (1);
10107                                         --sp;
10108
10109                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10110                                                 UNVERIFIED;
10111
10112                                         //g_assert (returnvar != -1);
10113                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10114                                         cfg->ret_var_set = TRUE;
10115                                 }
10116                         } else {
10117                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10118
10119                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10120                                         emit_pop_lmf (cfg);
10121
10122                                 if (cfg->ret) {
10123                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10124
10125                                         if (seq_points && !sym_seq_points) {
10126                                                 /*
10127                                                  * Place a seq point here too even through the IL stack is not
10128                                                  * empty, so a step over on
10129                                                  * call <FOO>
10130                                                  * ret
10131                                                  * will work correctly.
10132                                                  */
10133                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10134                                                 MONO_ADD_INS (cfg->cbb, ins);
10135                                         }
10136
10137                                         g_assert (!return_var);
10138                                         CHECK_STACK (1);
10139                                         --sp;
10140
10141                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10142                                                 UNVERIFIED;
10143
10144                                         emit_setret (cfg, *sp);
10145                                 }
10146                         }
10147                         if (sp != stack_start)
10148                                 UNVERIFIED;
10149                         MONO_INST_NEW (cfg, ins, OP_BR);
10150                         ip++;
10151                         ins->inst_target_bb = end_bblock;
10152                         MONO_ADD_INS (cfg->cbb, ins);
10153                         link_bblock (cfg, cfg->cbb, end_bblock);
10154                         start_new_bblock = 1;
10155                         break;
10156                 case CEE_BR_S:
10157                         CHECK_OPSIZE (2);
10158                         MONO_INST_NEW (cfg, ins, OP_BR);
10159                         ip++;
10160                         target = ip + 1 + (signed char)(*ip);
10161                         ++ip;
10162                         GET_BBLOCK (cfg, tblock, target);
10163                         link_bblock (cfg, cfg->cbb, tblock);
10164                         ins->inst_target_bb = tblock;
10165                         if (sp != stack_start) {
10166                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10167                                 sp = stack_start;
10168                                 CHECK_UNVERIFIABLE (cfg);
10169                         }
10170                         MONO_ADD_INS (cfg->cbb, ins);
10171                         start_new_bblock = 1;
10172                         inline_costs += BRANCH_COST;
10173                         break;
10174                 case CEE_BEQ_S:
10175                 case CEE_BGE_S:
10176                 case CEE_BGT_S:
10177                 case CEE_BLE_S:
10178                 case CEE_BLT_S:
10179                 case CEE_BNE_UN_S:
10180                 case CEE_BGE_UN_S:
10181                 case CEE_BGT_UN_S:
10182                 case CEE_BLE_UN_S:
10183                 case CEE_BLT_UN_S:
10184                         CHECK_OPSIZE (2);
10185                         CHECK_STACK (2);
10186                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10187                         ip++;
10188                         target = ip + 1 + *(signed char*)ip;
10189                         ip++;
10190
10191                         ADD_BINCOND (NULL);
10192
10193                         sp = stack_start;
10194                         inline_costs += BRANCH_COST;
10195                         break;
10196                 case CEE_BR:
10197                         CHECK_OPSIZE (5);
10198                         MONO_INST_NEW (cfg, ins, OP_BR);
10199                         ip++;
10200
10201                         target = ip + 4 + (gint32)read32(ip);
10202                         ip += 4;
10203                         GET_BBLOCK (cfg, tblock, target);
10204                         link_bblock (cfg, cfg->cbb, tblock);
10205                         ins->inst_target_bb = tblock;
10206                         if (sp != stack_start) {
10207                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10208                                 sp = stack_start;
10209                                 CHECK_UNVERIFIABLE (cfg);
10210                         }
10211
10212                         MONO_ADD_INS (cfg->cbb, ins);
10213
10214                         start_new_bblock = 1;
10215                         inline_costs += BRANCH_COST;
10216                         break;
10217                 case CEE_BRFALSE_S:
10218                 case CEE_BRTRUE_S:
10219                 case CEE_BRFALSE:
10220                 case CEE_BRTRUE: {
10221                         MonoInst *cmp;
10222                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10223                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10224                         guint32 opsize = is_short ? 1 : 4;
10225
10226                         CHECK_OPSIZE (opsize);
10227                         CHECK_STACK (1);
10228                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10229                                 UNVERIFIED;
10230                         ip ++;
10231                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10232                         ip += opsize;
10233
10234                         sp--;
10235
10236                         GET_BBLOCK (cfg, tblock, target);
10237                         link_bblock (cfg, cfg->cbb, tblock);
10238                         GET_BBLOCK (cfg, tblock, ip);
10239                         link_bblock (cfg, cfg->cbb, tblock);
10240
10241                         if (sp != stack_start) {
10242                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10243                                 CHECK_UNVERIFIABLE (cfg);
10244                         }
10245
10246                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10247                         cmp->sreg1 = sp [0]->dreg;
10248                         type_from_op (cfg, cmp, sp [0], NULL);
10249                         CHECK_TYPE (cmp);
10250
10251 #if SIZEOF_REGISTER == 4
10252                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10253                                 /* Convert it to OP_LCOMPARE */
10254                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10255                                 ins->type = STACK_I8;
10256                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10257                                 ins->inst_l = 0;
10258                                 MONO_ADD_INS (cfg->cbb, ins);
10259                                 cmp->opcode = OP_LCOMPARE;
10260                                 cmp->sreg2 = ins->dreg;
10261                         }
10262 #endif
10263                         MONO_ADD_INS (cfg->cbb, cmp);
10264
10265                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10266                         type_from_op (cfg, ins, sp [0], NULL);
10267                         MONO_ADD_INS (cfg->cbb, ins);
10268                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10269                         GET_BBLOCK (cfg, tblock, target);
10270                         ins->inst_true_bb = tblock;
10271                         GET_BBLOCK (cfg, tblock, ip);
10272                         ins->inst_false_bb = tblock;
10273                         start_new_bblock = 2;
10274
10275                         sp = stack_start;
10276                         inline_costs += BRANCH_COST;
10277                         break;
10278                 }
10279                 case CEE_BEQ:
10280                 case CEE_BGE:
10281                 case CEE_BGT:
10282                 case CEE_BLE:
10283                 case CEE_BLT:
10284                 case CEE_BNE_UN:
10285                 case CEE_BGE_UN:
10286                 case CEE_BGT_UN:
10287                 case CEE_BLE_UN:
10288                 case CEE_BLT_UN:
10289                         CHECK_OPSIZE (5);
10290                         CHECK_STACK (2);
10291                         MONO_INST_NEW (cfg, ins, *ip);
10292                         ip++;
10293                         target = ip + 4 + (gint32)read32(ip);
10294                         ip += 4;
10295
10296                         ADD_BINCOND (NULL);
10297
10298                         sp = stack_start;
10299                         inline_costs += BRANCH_COST;
10300                         break;
10301                 case CEE_SWITCH: {
10302                         MonoInst *src1;
10303                         MonoBasicBlock **targets;
10304                         MonoBasicBlock *default_bblock;
10305                         MonoJumpInfoBBTable *table;
10306                         int offset_reg = alloc_preg (cfg);
10307                         int target_reg = alloc_preg (cfg);
10308                         int table_reg = alloc_preg (cfg);
10309                         int sum_reg = alloc_preg (cfg);
10310                         gboolean use_op_switch;
10311
10312                         CHECK_OPSIZE (5);
10313                         CHECK_STACK (1);
10314                         n = read32 (ip + 1);
10315                         --sp;
10316                         src1 = sp [0];
10317                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10318                                 UNVERIFIED;
10319
10320                         ip += 5;
10321                         CHECK_OPSIZE (n * sizeof (guint32));
10322                         target = ip + n * sizeof (guint32);
10323
10324                         GET_BBLOCK (cfg, default_bblock, target);
10325                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10326
10327                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10328                         for (i = 0; i < n; ++i) {
10329                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10330                                 targets [i] = tblock;
10331                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10332                                 ip += 4;
10333                         }
10334
10335                         if (sp != stack_start) {
10336                                 /*
10337                                  * Link the current bb with the targets as well, so handle_stack_args
10338                                  * will set their in_stack correctly.
10339                                  */
10340                                 link_bblock (cfg, cfg->cbb, default_bblock);
10341                                 for (i = 0; i < n; ++i)
10342                                         link_bblock (cfg, cfg->cbb, targets [i]);
10343
10344                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10345                                 sp = stack_start;
10346                                 CHECK_UNVERIFIABLE (cfg);
10347
10348                                 /* Undo the links */
10349                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10350                                 for (i = 0; i < n; ++i)
10351                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10352                         }
10353
10354                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10355                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10356
10357                         for (i = 0; i < n; ++i)
10358                                 link_bblock (cfg, cfg->cbb, targets [i]);
10359
10360                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10361                         table->table = targets;
10362                         table->table_size = n;
10363
10364                         use_op_switch = FALSE;
10365 #ifdef TARGET_ARM
10366                         /* ARM implements SWITCH statements differently */
10367                         /* FIXME: Make it use the generic implementation */
10368                         if (!cfg->compile_aot)
10369                                 use_op_switch = TRUE;
10370 #endif
10371
10372                         if (COMPILE_LLVM (cfg))
10373                                 use_op_switch = TRUE;
10374
10375                         cfg->cbb->has_jump_table = 1;
10376
10377                         if (use_op_switch) {
10378                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10379                                 ins->sreg1 = src1->dreg;
10380                                 ins->inst_p0 = table;
10381                                 ins->inst_many_bb = targets;
10382                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10383                                 MONO_ADD_INS (cfg->cbb, ins);
10384                         } else {
10385                                 if (sizeof (gpointer) == 8)
10386                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10387                                 else
10388                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10389
10390 #if SIZEOF_REGISTER == 8
10391                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10392                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10393 #endif
10394
10395                                 if (cfg->compile_aot) {
10396                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10397                                 } else {
10398                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10399                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10400                                         ins->inst_p0 = table;
10401                                         ins->dreg = table_reg;
10402                                         MONO_ADD_INS (cfg->cbb, ins);
10403                                 }
10404
10405                                 /* FIXME: Use load_memindex */
10406                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10407                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10408                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10409                         }
10410                         start_new_bblock = 1;
10411                         inline_costs += (BRANCH_COST * 2);
10412                         break;
10413                 }
10414                 case CEE_LDIND_I1:
10415                 case CEE_LDIND_U1:
10416                 case CEE_LDIND_I2:
10417                 case CEE_LDIND_U2:
10418                 case CEE_LDIND_I4:
10419                 case CEE_LDIND_U4:
10420                 case CEE_LDIND_I8:
10421                 case CEE_LDIND_I:
10422                 case CEE_LDIND_R4:
10423                 case CEE_LDIND_R8:
10424                 case CEE_LDIND_REF:
10425                         CHECK_STACK (1);
10426                         --sp;
10427
10428                         switch (*ip) {
10429                         case CEE_LDIND_R4:
10430                         case CEE_LDIND_R8:
10431                                 dreg = alloc_freg (cfg);
10432                                 break;
10433                         case CEE_LDIND_I8:
10434                                 dreg = alloc_lreg (cfg);
10435                                 break;
10436                         case CEE_LDIND_REF:
10437                                 dreg = alloc_ireg_ref (cfg);
10438                                 break;
10439                         default:
10440                                 dreg = alloc_preg (cfg);
10441                         }
10442
10443                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10444                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10445                         if (*ip == CEE_LDIND_R4)
10446                                 ins->type = cfg->r4_stack_type;
10447                         ins->flags |= ins_flag;
10448                         MONO_ADD_INS (cfg->cbb, ins);
10449                         *sp++ = ins;
10450                         if (ins_flag & MONO_INST_VOLATILE) {
10451                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10452                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10453                         }
10454                         ins_flag = 0;
10455                         ++ip;
10456                         break;
10457                 case CEE_STIND_REF:
10458                 case CEE_STIND_I1:
10459                 case CEE_STIND_I2:
10460                 case CEE_STIND_I4:
10461                 case CEE_STIND_I8:
10462                 case CEE_STIND_R4:
10463                 case CEE_STIND_R8:
10464                 case CEE_STIND_I:
10465                         CHECK_STACK (2);
10466                         sp -= 2;
10467
10468                         if (ins_flag & MONO_INST_VOLATILE) {
10469                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10470                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10471                         }
10472
10473                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10474                         ins->flags |= ins_flag;
10475                         ins_flag = 0;
10476
10477                         MONO_ADD_INS (cfg->cbb, ins);
10478
10479                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
10480                                 emit_write_barrier (cfg, sp [0], sp [1]);
10481
10482                         inline_costs += 1;
10483                         ++ip;
10484                         break;
10485
10486                 case CEE_MUL:
10487                         CHECK_STACK (2);
10488
10489                         MONO_INST_NEW (cfg, ins, (*ip));
10490                         sp -= 2;
10491                         ins->sreg1 = sp [0]->dreg;
10492                         ins->sreg2 = sp [1]->dreg;
10493                         type_from_op (cfg, ins, sp [0], sp [1]);
10494                         CHECK_TYPE (ins);
10495                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10496
10497                         /* Use the immediate opcodes if possible */
10498                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10499                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10500                                 if (imm_opcode != -1) {
10501                                         ins->opcode = imm_opcode;
10502                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10503                                         ins->sreg2 = -1;
10504
10505                                         NULLIFY_INS (sp [1]);
10506                                 }
10507                         }
10508
10509                         MONO_ADD_INS ((cfg)->cbb, (ins));
10510
10511                         *sp++ = mono_decompose_opcode (cfg, ins);
10512                         ip++;
10513                         break;
10514                 case CEE_ADD:
10515                 case CEE_SUB:
10516                 case CEE_DIV:
10517                 case CEE_DIV_UN:
10518                 case CEE_REM:
10519                 case CEE_REM_UN:
10520                 case CEE_AND:
10521                 case CEE_OR:
10522                 case CEE_XOR:
10523                 case CEE_SHL:
10524                 case CEE_SHR:
10525                 case CEE_SHR_UN:
10526                         CHECK_STACK (2);
10527
10528                         MONO_INST_NEW (cfg, ins, (*ip));
10529                         sp -= 2;
10530                         ins->sreg1 = sp [0]->dreg;
10531                         ins->sreg2 = sp [1]->dreg;
10532                         type_from_op (cfg, ins, sp [0], sp [1]);
10533                         CHECK_TYPE (ins);
10534                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10535                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10536
10537                         /* FIXME: Pass opcode to is_inst_imm */
10538
10539                         /* Use the immediate opcodes if possible */
10540                         if (((sp [1]->opcode == OP_ICONST) || (sp [1]->opcode == OP_I8CONST)) && mono_arch_is_inst_imm (sp [1]->opcode == OP_ICONST ? sp [1]->inst_c0 : sp [1]->inst_l)) {
10541                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10542                                 if (imm_opcode != -1) {
10543                                         ins->opcode = imm_opcode;
10544                                         if (sp [1]->opcode == OP_I8CONST) {
10545 #if SIZEOF_REGISTER == 8
10546                                                 ins->inst_imm = sp [1]->inst_l;
10547 #else
10548                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10549                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10550 #endif
10551                                         }
10552                                         else
10553                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10554                                         ins->sreg2 = -1;
10555
10556                                         /* Might be followed by an instruction added by add_widen_op */
10557                                         if (sp [1]->next == NULL)
10558                                                 NULLIFY_INS (sp [1]);
10559                                 }
10560                         }
10561                         MONO_ADD_INS ((cfg)->cbb, (ins));
10562
10563                         *sp++ = mono_decompose_opcode (cfg, ins);
10564                         ip++;
10565                         break;
10566                 case CEE_NEG:
10567                 case CEE_NOT:
10568                 case CEE_CONV_I1:
10569                 case CEE_CONV_I2:
10570                 case CEE_CONV_I4:
10571                 case CEE_CONV_R4:
10572                 case CEE_CONV_R8:
10573                 case CEE_CONV_U4:
10574                 case CEE_CONV_I8:
10575                 case CEE_CONV_U8:
10576                 case CEE_CONV_OVF_I8:
10577                 case CEE_CONV_OVF_U8:
10578                 case CEE_CONV_R_UN:
10579                         CHECK_STACK (1);
10580
10581                         /* Special case this earlier so we have long constants in the IR */
10582                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10583                                 int data = sp [-1]->inst_c0;
10584                                 sp [-1]->opcode = OP_I8CONST;
10585                                 sp [-1]->type = STACK_I8;
10586 #if SIZEOF_REGISTER == 8
10587                                 if ((*ip) == CEE_CONV_U8)
10588                                         sp [-1]->inst_c0 = (guint32)data;
10589                                 else
10590                                         sp [-1]->inst_c0 = data;
10591 #else
10592                                 sp [-1]->inst_ls_word = data;
10593                                 if ((*ip) == CEE_CONV_U8)
10594                                         sp [-1]->inst_ms_word = 0;
10595                                 else
10596                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10597 #endif
10598                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10599                         }
10600                         else {
10601                                 ADD_UNOP (*ip);
10602                         }
10603                         ip++;
10604                         break;
10605                 case CEE_CONV_OVF_I4:
10606                 case CEE_CONV_OVF_I1:
10607                 case CEE_CONV_OVF_I2:
10608                 case CEE_CONV_OVF_I:
10609                 case CEE_CONV_OVF_U:
10610                         CHECK_STACK (1);
10611
10612                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10613                                 ADD_UNOP (CEE_CONV_OVF_I8);
10614                                 ADD_UNOP (*ip);
10615                         } else {
10616                                 ADD_UNOP (*ip);
10617                         }
10618                         ip++;
10619                         break;
10620                 case CEE_CONV_OVF_U1:
10621                 case CEE_CONV_OVF_U2:
10622                 case CEE_CONV_OVF_U4:
10623                         CHECK_STACK (1);
10624
10625                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10626                                 ADD_UNOP (CEE_CONV_OVF_U8);
10627                                 ADD_UNOP (*ip);
10628                         } else {
10629                                 ADD_UNOP (*ip);
10630                         }
10631                         ip++;
10632                         break;
10633                 case CEE_CONV_OVF_I1_UN:
10634                 case CEE_CONV_OVF_I2_UN:
10635                 case CEE_CONV_OVF_I4_UN:
10636                 case CEE_CONV_OVF_I8_UN:
10637                 case CEE_CONV_OVF_U1_UN:
10638                 case CEE_CONV_OVF_U2_UN:
10639                 case CEE_CONV_OVF_U4_UN:
10640                 case CEE_CONV_OVF_U8_UN:
10641                 case CEE_CONV_OVF_I_UN:
10642                 case CEE_CONV_OVF_U_UN:
10643                 case CEE_CONV_U2:
10644                 case CEE_CONV_U1:
10645                 case CEE_CONV_I:
10646                 case CEE_CONV_U:
10647                         CHECK_STACK (1);
10648                         ADD_UNOP (*ip);
10649                         CHECK_CFG_EXCEPTION;
10650                         ip++;
10651                         break;
10652                 case CEE_ADD_OVF:
10653                 case CEE_ADD_OVF_UN:
10654                 case CEE_MUL_OVF:
10655                 case CEE_MUL_OVF_UN:
10656                 case CEE_SUB_OVF:
10657                 case CEE_SUB_OVF_UN:
10658                         CHECK_STACK (2);
10659                         ADD_BINOP (*ip);
10660                         ip++;
10661                         break;
10662                 case CEE_CPOBJ:
10663                         GSHAREDVT_FAILURE (*ip);
10664                         CHECK_OPSIZE (5);
10665                         CHECK_STACK (2);
10666                         token = read32 (ip + 1);
10667                         klass = mini_get_class (method, token, generic_context);
10668                         CHECK_TYPELOAD (klass);
10669                         sp -= 2;
10670                         if (generic_class_is_reference_type (cfg, klass)) {
10671                                 MonoInst *store, *load;
10672                                 int dreg = alloc_ireg_ref (cfg);
10673
10674                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10675                                 load->flags |= ins_flag;
10676                                 MONO_ADD_INS (cfg->cbb, load);
10677
10678                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10679                                 store->flags |= ins_flag;
10680                                 MONO_ADD_INS (cfg->cbb, store);
10681
10682                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10683                                         emit_write_barrier (cfg, sp [0], sp [1]);
10684                         } else {
10685                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10686                         }
10687                         ins_flag = 0;
10688                         ip += 5;
10689                         break;
10690                 case CEE_LDOBJ: {
10691                         int loc_index = -1;
10692                         int stloc_len = 0;
10693
10694                         CHECK_OPSIZE (5);
10695                         CHECK_STACK (1);
10696                         --sp;
10697                         token = read32 (ip + 1);
10698                         klass = mini_get_class (method, token, generic_context);
10699                         CHECK_TYPELOAD (klass);
10700
10701                         /* Optimize the common ldobj+stloc combination */
10702                         switch (ip [5]) {
10703                         case CEE_STLOC_S:
10704                                 loc_index = ip [6];
10705                                 stloc_len = 2;
10706                                 break;
10707                         case CEE_STLOC_0:
10708                         case CEE_STLOC_1:
10709                         case CEE_STLOC_2:
10710                         case CEE_STLOC_3:
10711                                 loc_index = ip [5] - CEE_STLOC_0;
10712                                 stloc_len = 1;
10713                                 break;
10714                         default:
10715                                 break;
10716                         }
10717
10718                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10719                                 CHECK_LOCAL (loc_index);
10720
10721                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10722                                 ins->dreg = cfg->locals [loc_index]->dreg;
10723                                 ins->flags |= ins_flag;
10724                                 ip += 5;
10725                                 ip += stloc_len;
10726                                 if (ins_flag & MONO_INST_VOLATILE) {
10727                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10728                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10729                                 }
10730                                 ins_flag = 0;
10731                                 break;
10732                         }
10733
10734                         /* Optimize the ldobj+stobj combination */
10735                         /* The reference case ends up being a load+store anyway */
10736                         /* Skip this if the operation is volatile. */
10737                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass) && !(ins_flag & MONO_INST_VOLATILE)) {
10738                                 CHECK_STACK (1);
10739
10740                                 sp --;
10741
10742                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10743
10744                                 ip += 5 + 5;
10745                                 ins_flag = 0;
10746                                 break;
10747                         }
10748
10749                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10750                         ins->flags |= ins_flag;
10751                         *sp++ = ins;
10752
10753                         if (ins_flag & MONO_INST_VOLATILE) {
10754                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10755                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10756                         }
10757
10758                         ip += 5;
10759                         ins_flag = 0;
10760                         inline_costs += 1;
10761                         break;
10762                 }
10763                 case CEE_LDSTR:
10764                         CHECK_STACK_OVF (1);
10765                         CHECK_OPSIZE (5);
10766                         n = read32 (ip + 1);
10767
10768                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10769                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10770                                 ins->type = STACK_OBJ;
10771                                 *sp = ins;
10772                         }
10773                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10774                                 MonoInst *iargs [1];
10775                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10776
10777                                 if (cfg->compile_aot)
10778                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10779                                 else
10780                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10781                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10782                         } else {
10783                                 if (cfg->opt & MONO_OPT_SHARED) {
10784                                         MonoInst *iargs [3];
10785
10786                                         if (cfg->compile_aot) {
10787                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10788                                         }
10789                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10790                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10791                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10792                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10793                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10794                                         CHECK_CFG_ERROR;
10795                                 } else {
10796                                         if (cfg->cbb->out_of_line) {
10797                                                 MonoInst *iargs [2];
10798
10799                                                 if (image == mono_defaults.corlib) {
10800                                                         /*
10801                                                          * Avoid relocations in AOT and save some space by using a
10802                                                          * version of helper_ldstr specialized to mscorlib.
10803                                                          */
10804                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10805                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10806                                                 } else {
10807                                                         /* Avoid creating the string object */
10808                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10809                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10810                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10811                                                 }
10812                                         }
10813                                         else
10814                                         if (cfg->compile_aot) {
10815                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10816                                                 *sp = ins;
10817                                                 MONO_ADD_INS (cfg->cbb, ins);
10818                                         }
10819                                         else {
10820                                                 NEW_PCONST (cfg, ins, NULL);
10821                                                 ins->type = STACK_OBJ;
10822                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10823                                                 CHECK_CFG_ERROR;
10824
10825                                                 if (!ins->inst_p0)
10826                                                         OUT_OF_MEMORY_FAILURE;
10827
10828                                                 *sp = ins;
10829                                                 MONO_ADD_INS (cfg->cbb, ins);
10830                                         }
10831                                 }
10832                         }
10833
10834                         sp++;
10835                         ip += 5;
10836                         break;
10837                 case CEE_NEWOBJ: {
10838                         MonoInst *iargs [2];
10839                         MonoMethodSignature *fsig;
10840                         MonoInst this_ins;
10841                         MonoInst *alloc;
10842                         MonoInst *vtable_arg = NULL;
10843
10844                         CHECK_OPSIZE (5);
10845                         token = read32 (ip + 1);
10846                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10847                         CHECK_CFG_ERROR;
10848
10849                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10850                         CHECK_CFG_ERROR;
10851
10852                         mono_save_token_info (cfg, image, token, cmethod);
10853
10854                         if (!mono_class_init (cmethod->klass))
10855                                 TYPE_LOAD_ERROR (cmethod->klass);
10856
10857                         context_used = mini_method_check_context_used (cfg, cmethod);
10858
10859                         if (mono_security_core_clr_enabled ())
10860                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10861
10862                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10863                                 emit_class_init (cfg, cmethod->klass);
10864                                 CHECK_TYPELOAD (cmethod->klass);
10865                         }
10866
10867                         /*
10868                         if (cfg->gsharedvt) {
10869                                 if (mini_is_gsharedvt_variable_signature (sig))
10870                                         GSHAREDVT_FAILURE (*ip);
10871                         }
10872                         */
10873
10874                         n = fsig->param_count;
10875                         CHECK_STACK (n);
10876
10877                         /*
10878                          * Generate smaller code for the common newobj <exception> instruction in
10879                          * argument checking code.
10880                          */
10881                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10882                                 is_exception_class (cmethod->klass) && n <= 2 &&
10883                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10884                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10885                                 MonoInst *iargs [3];
10886
10887                                 sp -= n;
10888
10889                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10890                                 switch (n) {
10891                                 case 0:
10892                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10893                                         break;
10894                                 case 1:
10895                                         iargs [1] = sp [0];
10896                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10897                                         break;
10898                                 case 2:
10899                                         iargs [1] = sp [0];
10900                                         iargs [2] = sp [1];
10901                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10902                                         break;
10903                                 default:
10904                                         g_assert_not_reached ();
10905                                 }
10906
10907                                 ip += 5;
10908                                 inline_costs += 5;
10909                                 break;
10910                         }
10911
10912                         /* move the args to allow room for 'this' in the first position */
10913                         while (n--) {
10914                                 --sp;
10915                                 sp [1] = sp [0];
10916                         }
10917
10918                         /* check_call_signature () requires sp[0] to be set */
10919                         this_ins.type = STACK_OBJ;
10920                         sp [0] = &this_ins;
10921                         if (check_call_signature (cfg, fsig, sp))
10922                                 UNVERIFIED;
10923
10924                         iargs [0] = NULL;
10925
10926                         if (mini_class_is_system_array (cmethod->klass)) {
10927                                 *sp = emit_get_rgctx_method (cfg, context_used,
10928                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10929
10930                                 /* Avoid varargs in the common case */
10931                                 if (fsig->param_count == 1)
10932                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10933                                 else if (fsig->param_count == 2)
10934                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10935                                 else if (fsig->param_count == 3)
10936                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10937                                 else if (fsig->param_count == 4)
10938                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10939                                 else
10940                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10941                         } else if (cmethod->string_ctor) {
10942                                 g_assert (!context_used);
10943                                 g_assert (!vtable_arg);
10944                                 /* we simply pass a null pointer */
10945                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10946                                 /* now call the string ctor */
10947                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10948                         } else {
10949                                 if (cmethod->klass->valuetype) {
10950                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10951                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10952                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10953
10954                                         alloc = NULL;
10955
10956                                         /*
10957                                          * The code generated by mini_emit_virtual_call () expects
10958                                          * iargs [0] to be a boxed instance, but luckily the vcall
10959                                          * will be transformed into a normal call there.
10960                                          */
10961                                 } else if (context_used) {
10962                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10963                                         *sp = alloc;
10964                                 } else {
10965                                         MonoVTable *vtable = NULL;
10966
10967                                         if (!cfg->compile_aot)
10968                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10969                                         CHECK_TYPELOAD (cmethod->klass);
10970
10971                                         /*
10972                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10973                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10974                                          * As a workaround, we call class cctors before allocating objects.
10975                                          */
10976                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10977                                                 emit_class_init (cfg, cmethod->klass);
10978                                                 if (cfg->verbose_level > 2)
10979                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10980                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10981                                         }
10982
10983                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10984                                         *sp = alloc;
10985                                 }
10986                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10987
10988                                 if (alloc)
10989                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10990
10991                                 /* Now call the actual ctor */
10992                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10993                                 CHECK_CFG_EXCEPTION;
10994                         }
10995
10996                         if (alloc == NULL) {
10997                                 /* Valuetype */
10998                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10999                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
11000                                 *sp++= ins;
11001                         } else {
11002                                 *sp++ = alloc;
11003                         }
11004
11005                         ip += 5;
11006                         inline_costs += 5;
11007                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
11008                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
11009                         break;
11010                 }
11011                 case CEE_CASTCLASS:
11012                 case CEE_ISINST: {
11013                         CHECK_STACK (1);
11014                         --sp;
11015                         CHECK_OPSIZE (5);
11016                         token = read32 (ip + 1);
11017                         klass = mini_get_class (method, token, generic_context);
11018                         CHECK_TYPELOAD (klass);
11019                         if (sp [0]->type != STACK_OBJ)
11020                                 UNVERIFIED;
11021
11022                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
11023                         ins->dreg = alloc_preg (cfg);
11024                         ins->sreg1 = (*sp)->dreg;
11025                         ins->klass = klass;
11026                         ins->type = STACK_OBJ;
11027                         MONO_ADD_INS (cfg->cbb, ins);
11028
11029                         CHECK_CFG_EXCEPTION;
11030                         *sp++ = ins;
11031                         ip += 5;
11032
11033                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
11034                         break;
11035                 }
11036                 case CEE_UNBOX_ANY: {
11037                         MonoInst *res, *addr;
11038
11039                         CHECK_STACK (1);
11040                         --sp;
11041                         CHECK_OPSIZE (5);
11042                         token = read32 (ip + 1);
11043                         klass = mini_get_class (method, token, generic_context);
11044                         CHECK_TYPELOAD (klass);
11045
11046                         mono_save_token_info (cfg, image, token, klass);
11047
11048                         context_used = mini_class_check_context_used (cfg, klass);
11049
11050                         if (mini_is_gsharedvt_klass (klass)) {
11051                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11052                                 inline_costs += 2;
11053                         } else if (generic_class_is_reference_type (cfg, klass)) {
11054                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
11055                                         EMIT_NEW_PCONST (cfg, res, NULL);
11056                                         res->type = STACK_OBJ;
11057                                 } else {
11058                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
11059                                         res->dreg = alloc_preg (cfg);
11060                                         res->sreg1 = (*sp)->dreg;
11061                                         res->klass = klass;
11062                                         res->type = STACK_OBJ;
11063                                         MONO_ADD_INS (cfg->cbb, res);
11064                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
11065                                 }
11066                         } else if (mono_class_is_nullable (klass)) {
11067                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11068                         } else {
11069                                 addr = handle_unbox (cfg, klass, sp, context_used);
11070                                 /* LDOBJ */
11071                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11072                                 res = ins;
11073                                 inline_costs += 2;
11074                         }
11075
11076                         *sp ++ = res;
11077                         ip += 5;
11078                         break;
11079                 }
11080                 case CEE_BOX: {
11081                         MonoInst *val;
11082                         MonoClass *enum_class;
11083                         MonoMethod *has_flag;
11084
11085                         CHECK_STACK (1);
11086                         --sp;
11087                         val = *sp;
11088                         CHECK_OPSIZE (5);
11089                         token = read32 (ip + 1);
11090                         klass = mini_get_class (method, token, generic_context);
11091                         CHECK_TYPELOAD (klass);
11092
11093                         mono_save_token_info (cfg, image, token, klass);
11094
11095                         context_used = mini_class_check_context_used (cfg, klass);
11096
11097                         if (generic_class_is_reference_type (cfg, klass)) {
11098                                 *sp++ = val;
11099                                 ip += 5;
11100                                 break;
11101                         }
11102
11103                         if (klass == mono_defaults.void_class)
11104                                 UNVERIFIED;
11105                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11106                                 UNVERIFIED;
11107                         /* frequent check in generic code: box (struct), brtrue */
11108
11109                         /*
11110                          * Look for:
11111                          *
11112                          *   <push int/long ptr>
11113                          *   <push int/long>
11114                          *   box MyFlags
11115                          *   constrained. MyFlags
11116                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11117                          *
11118                          * If we find this sequence and the operand types on box and constrained
11119                          * are equal, we can emit a specialized instruction sequence instead of
11120                          * the very slow HasFlag () call.
11121                          */
11122                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11123                             /* Cheap checks first. */
11124                             ip + 5 + 6 + 5 < end &&
11125                             ip [5] == CEE_PREFIX1 &&
11126                             ip [6] == CEE_CONSTRAINED_ &&
11127                             ip [11] == CEE_CALLVIRT &&
11128                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11129                             mono_class_is_enum (klass) &&
11130                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11131                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11132                             has_flag->klass == mono_defaults.enum_class &&
11133                             !strcmp (has_flag->name, "HasFlag") &&
11134                             has_flag->signature->hasthis &&
11135                             has_flag->signature->param_count == 1) {
11136                                 CHECK_TYPELOAD (enum_class);
11137
11138                                 if (enum_class == klass) {
11139                                         MonoInst *enum_this, *enum_flag;
11140
11141                                         ip += 5 + 6 + 5;
11142                                         --sp;
11143
11144                                         enum_this = sp [0];
11145                                         enum_flag = sp [1];
11146
11147                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11148                                         break;
11149                                 }
11150                         }
11151
11152                         // FIXME: LLVM can't handle the inconsistent bb linking
11153                         if (!mono_class_is_nullable (klass) &&
11154                                 !mini_is_gsharedvt_klass (klass) &&
11155                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11156                                 (ip [5] == CEE_BRTRUE ||
11157                                  ip [5] == CEE_BRTRUE_S ||
11158                                  ip [5] == CEE_BRFALSE ||
11159                                  ip [5] == CEE_BRFALSE_S)) {
11160                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11161                                 int dreg;
11162                                 MonoBasicBlock *true_bb, *false_bb;
11163
11164                                 ip += 5;
11165
11166                                 if (cfg->verbose_level > 3) {
11167                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11168                                         printf ("<box+brtrue opt>\n");
11169                                 }
11170
11171                                 switch (*ip) {
11172                                 case CEE_BRTRUE_S:
11173                                 case CEE_BRFALSE_S:
11174                                         CHECK_OPSIZE (2);
11175                                         ip++;
11176                                         target = ip + 1 + (signed char)(*ip);
11177                                         ip++;
11178                                         break;
11179                                 case CEE_BRTRUE:
11180                                 case CEE_BRFALSE:
11181                                         CHECK_OPSIZE (5);
11182                                         ip++;
11183                                         target = ip + 4 + (gint)(read32 (ip));
11184                                         ip += 4;
11185                                         break;
11186                                 default:
11187                                         g_assert_not_reached ();
11188                                 }
11189
11190                                 /*
11191                                  * We need to link both bblocks, since it is needed for handling stack
11192                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11193                                  * Branching to only one of them would lead to inconsistencies, so
11194                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11195                                  */
11196                                 GET_BBLOCK (cfg, true_bb, target);
11197                                 GET_BBLOCK (cfg, false_bb, ip);
11198
11199                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11200                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11201
11202                                 if (sp != stack_start) {
11203                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11204                                         sp = stack_start;
11205                                         CHECK_UNVERIFIABLE (cfg);
11206                                 }
11207
11208                                 if (COMPILE_LLVM (cfg)) {
11209                                         dreg = alloc_ireg (cfg);
11210                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11211                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11212
11213                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11214                                 } else {
11215                                         /* The JIT can't eliminate the iconst+compare */
11216                                         MONO_INST_NEW (cfg, ins, OP_BR);
11217                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11218                                         MONO_ADD_INS (cfg->cbb, ins);
11219                                 }
11220
11221                                 start_new_bblock = 1;
11222                                 break;
11223                         }
11224
11225                         *sp++ = handle_box (cfg, val, klass, context_used);
11226
11227                         CHECK_CFG_EXCEPTION;
11228                         ip += 5;
11229                         inline_costs += 1;
11230                         break;
11231                 }
11232                 case CEE_UNBOX: {
11233                         CHECK_STACK (1);
11234                         --sp;
11235                         CHECK_OPSIZE (5);
11236                         token = read32 (ip + 1);
11237                         klass = mini_get_class (method, token, generic_context);
11238                         CHECK_TYPELOAD (klass);
11239
11240                         mono_save_token_info (cfg, image, token, klass);
11241
11242                         context_used = mini_class_check_context_used (cfg, klass);
11243
11244                         if (mono_class_is_nullable (klass)) {
11245                                 MonoInst *val;
11246
11247                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11248                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11249
11250                                 *sp++= ins;
11251                         } else {
11252                                 ins = handle_unbox (cfg, klass, sp, context_used);
11253                                 *sp++ = ins;
11254                         }
11255                         ip += 5;
11256                         inline_costs += 2;
11257                         break;
11258                 }
11259                 case CEE_LDFLD:
11260                 case CEE_LDFLDA:
11261                 case CEE_STFLD:
11262                 case CEE_LDSFLD:
11263                 case CEE_LDSFLDA:
11264                 case CEE_STSFLD: {
11265                         MonoClassField *field;
11266 #ifndef DISABLE_REMOTING
11267                         int costs;
11268 #endif
11269                         guint foffset;
11270                         gboolean is_instance;
11271                         int op;
11272                         gpointer addr = NULL;
11273                         gboolean is_special_static;
11274                         MonoType *ftype;
11275                         MonoInst *store_val = NULL;
11276                         MonoInst *thread_ins;
11277
11278                         op = *ip;
11279                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11280                         if (is_instance) {
11281                                 if (op == CEE_STFLD) {
11282                                         CHECK_STACK (2);
11283                                         sp -= 2;
11284                                         store_val = sp [1];
11285                                 } else {
11286                                         CHECK_STACK (1);
11287                                         --sp;
11288                                 }
11289                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11290                                         UNVERIFIED;
11291                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11292                                         UNVERIFIED;
11293                         } else {
11294                                 if (op == CEE_STSFLD) {
11295                                         CHECK_STACK (1);
11296                                         sp--;
11297                                         store_val = sp [0];
11298                                 }
11299                         }
11300
11301                         CHECK_OPSIZE (5);
11302                         token = read32 (ip + 1);
11303                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11304                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11305                                 klass = field->parent;
11306                         }
11307                         else {
11308                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11309                                 CHECK_CFG_ERROR;
11310                         }
11311                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11312                                 FIELD_ACCESS_FAILURE (method, field);
11313                         mono_class_init (klass);
11314
11315                         /* if the class is Critical then transparent code cannot access it's fields */
11316                         if (!is_instance && mono_security_core_clr_enabled ())
11317                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11318
11319                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11320                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11321                         if (mono_security_core_clr_enabled ())
11322                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11323                         */
11324
11325                         ftype = mono_field_get_type (field);
11326
11327                         /*
11328                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11329                          * the static case.
11330                          */
11331                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11332                                 switch (op) {
11333                                 case CEE_LDFLD:
11334                                         op = CEE_LDSFLD;
11335                                         break;
11336                                 case CEE_STFLD:
11337                                         op = CEE_STSFLD;
11338                                         break;
11339                                 case CEE_LDFLDA:
11340                                         op = CEE_LDSFLDA;
11341                                         break;
11342                                 default:
11343                                         g_assert_not_reached ();
11344                                 }
11345                                 is_instance = FALSE;
11346                         }
11347
11348                         context_used = mini_class_check_context_used (cfg, klass);
11349
11350                         /* INSTANCE CASE */
11351
11352                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11353                         if (op == CEE_STFLD) {
11354                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11355                                         UNVERIFIED;
11356 #ifndef DISABLE_REMOTING
11357                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11358                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11359                                         MonoInst *iargs [5];
11360
11361                                         GSHAREDVT_FAILURE (op);
11362
11363                                         iargs [0] = sp [0];
11364                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11365                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11366                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11367                                                     field->offset);
11368                                         iargs [4] = sp [1];
11369
11370                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11371                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11372                                                                                            iargs, ip, cfg->real_offset, TRUE);
11373                                                 CHECK_CFG_EXCEPTION;
11374                                                 g_assert (costs > 0);
11375
11376                                                 cfg->real_offset += 5;
11377
11378                                                 inline_costs += costs;
11379                                         } else {
11380                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11381                                         }
11382                                 } else
11383 #endif
11384                                 {
11385                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11386
11387                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11388
11389                                         if (ins_flag & MONO_INST_VOLATILE) {
11390                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11391                                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11392                                         }
11393
11394                                         if (mini_is_gsharedvt_klass (klass)) {
11395                                                 MonoInst *offset_ins;
11396
11397                                                 context_used = mini_class_check_context_used (cfg, klass);
11398
11399                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11400                                                 /* The value is offset by 1 */
11401                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11402                                                 dreg = alloc_ireg_mp (cfg);
11403                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11404                                                 wbarrier_ptr_ins = ins;
11405                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11406                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11407                                         } else {
11408                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11409                                         }
11410                                         if (sp [0]->opcode != OP_LDADDR)
11411                                                 store->flags |= MONO_INST_FAULT;
11412
11413                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
11414                                                 if (mini_is_gsharedvt_klass (klass)) {
11415                                                         g_assert (wbarrier_ptr_ins);
11416                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11417                                                 } else {
11418                                                         /* insert call to write barrier */
11419                                                         MonoInst *ptr;
11420                                                         int dreg;
11421
11422                                                         dreg = alloc_ireg_mp (cfg);
11423                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11424                                                         emit_write_barrier (cfg, ptr, sp [1]);
11425                                                 }
11426                                         }
11427
11428                                         store->flags |= ins_flag;
11429                                 }
11430                                 ins_flag = 0;
11431                                 ip += 5;
11432                                 break;
11433                         }
11434
11435 #ifndef DISABLE_REMOTING
11436                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11437                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11438                                 MonoInst *iargs [4];
11439
11440                                 GSHAREDVT_FAILURE (op);
11441
11442                                 iargs [0] = sp [0];
11443                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11444                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11445                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11446                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11447                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11448                                                                                    iargs, ip, cfg->real_offset, TRUE);
11449                                         CHECK_CFG_EXCEPTION;
11450                                         g_assert (costs > 0);
11451
11452                                         cfg->real_offset += 5;
11453
11454                                         *sp++ = iargs [0];
11455
11456                                         inline_costs += costs;
11457                                 } else {
11458                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11459                                         *sp++ = ins;
11460                                 }
11461                         } else
11462 #endif
11463                         if (is_instance) {
11464                                 if (sp [0]->type == STACK_VTYPE) {
11465                                         MonoInst *var;
11466
11467                                         /* Have to compute the address of the variable */
11468
11469                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11470                                         if (!var)
11471                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11472                                         else
11473                                                 g_assert (var->klass == klass);
11474
11475                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11476                                         sp [0] = ins;
11477                                 }
11478
11479                                 if (op == CEE_LDFLDA) {
11480                                         if (sp [0]->type == STACK_OBJ) {
11481                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11482                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11483                                         }
11484
11485                                         dreg = alloc_ireg_mp (cfg);
11486
11487                                         if (mini_is_gsharedvt_klass (klass)) {
11488                                                 MonoInst *offset_ins;
11489
11490                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11491                                                 /* The value is offset by 1 */
11492                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11493                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11494                                         } else {
11495                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11496                                         }
11497                                         ins->klass = mono_class_from_mono_type (field->type);
11498                                         ins->type = STACK_MP;
11499                                         *sp++ = ins;
11500                                 } else {
11501                                         MonoInst *load;
11502
11503                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11504
11505                                         if (mini_is_gsharedvt_klass (klass)) {
11506                                                 MonoInst *offset_ins;
11507
11508                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11509                                                 /* The value is offset by 1 */
11510                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11511                                                 dreg = alloc_ireg_mp (cfg);
11512                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11513                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11514                                         } else {
11515                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11516                                         }
11517                                         load->flags |= ins_flag;
11518                                         if (sp [0]->opcode != OP_LDADDR)
11519                                                 load->flags |= MONO_INST_FAULT;
11520                                         *sp++ = load;
11521                                 }
11522                         }
11523
11524                         if (is_instance) {
11525                                 ins_flag = 0;
11526                                 ip += 5;
11527                                 break;
11528                         }
11529
11530                         /* STATIC CASE */
11531                         context_used = mini_class_check_context_used (cfg, klass);
11532
11533                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11534                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11535                                 CHECK_CFG_ERROR;
11536                         }
11537
11538                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11539                          * to be called here.
11540                          */
11541                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11542                                 mono_class_vtable (cfg->domain, klass);
11543                                 CHECK_TYPELOAD (klass);
11544                         }
11545                         mono_domain_lock (cfg->domain);
11546                         if (cfg->domain->special_static_fields)
11547                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11548                         mono_domain_unlock (cfg->domain);
11549
11550                         is_special_static = mono_class_field_is_special_static (field);
11551
11552                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11553                                 thread_ins = mono_get_thread_intrinsic (cfg);
11554                         else
11555                                 thread_ins = NULL;
11556
11557                         /* Generate IR to compute the field address */
11558                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11559                                 /*
11560                                  * Fast access to TLS data
11561                                  * Inline version of get_thread_static_data () in
11562                                  * threads.c.
11563                                  */
11564                                 guint32 offset;
11565                                 int idx, static_data_reg, array_reg, dreg;
11566
11567                                 GSHAREDVT_FAILURE (op);
11568
11569                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11570                                 static_data_reg = alloc_ireg (cfg);
11571                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11572
11573                                 if (cfg->compile_aot) {
11574                                         int offset_reg, offset2_reg, idx_reg;
11575
11576                                         /* For TLS variables, this will return the TLS offset */
11577                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11578                                         offset_reg = ins->dreg;
11579                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11580                                         idx_reg = alloc_ireg (cfg);
11581                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11582                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11583                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11584                                         array_reg = alloc_ireg (cfg);
11585                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11586                                         offset2_reg = alloc_ireg (cfg);
11587                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11588                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11589                                         dreg = alloc_ireg (cfg);
11590                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11591                                 } else {
11592                                         offset = (gsize)addr & 0x7fffffff;
11593                                         idx = offset & 0x3f;
11594
11595                                         array_reg = alloc_ireg (cfg);
11596                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11597                                         dreg = alloc_ireg (cfg);
11598                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11599                                 }
11600                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11601                                         (cfg->compile_aot && is_special_static) ||
11602                                         (context_used && is_special_static)) {
11603                                 MonoInst *iargs [2];
11604
11605                                 g_assert (field->parent);
11606                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11607                                 if (context_used) {
11608                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11609                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11610                                 } else {
11611                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11612                                 }
11613                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11614                         } else if (context_used) {
11615                                 MonoInst *static_data;
11616
11617                                 /*
11618                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11619                                         method->klass->name_space, method->klass->name, method->name,
11620                                         depth, field->offset);
11621                                 */
11622
11623                                 if (mono_class_needs_cctor_run (klass, method))
11624                                         emit_class_init (cfg, klass);
11625
11626                                 /*
11627                                  * The pointer we're computing here is
11628                                  *
11629                                  *   super_info.static_data + field->offset
11630                                  */
11631                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11632                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11633
11634                                 if (mini_is_gsharedvt_klass (klass)) {
11635                                         MonoInst *offset_ins;
11636
11637                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11638                                         /* The value is offset by 1 */
11639                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11640                                         dreg = alloc_ireg_mp (cfg);
11641                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11642                                 } else if (field->offset == 0) {
11643                                         ins = static_data;
11644                                 } else {
11645                                         int addr_reg = mono_alloc_preg (cfg);
11646                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11647                                 }
11648                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11649                                 MonoInst *iargs [2];
11650
11651                                 g_assert (field->parent);
11652                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11653                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11654                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11655                         } else {
11656                                 MonoVTable *vtable = NULL;
11657
11658                                 if (!cfg->compile_aot)
11659                                         vtable = mono_class_vtable (cfg->domain, klass);
11660                                 CHECK_TYPELOAD (klass);
11661
11662                                 if (!addr) {
11663                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11664                                                 if (!(g_slist_find (class_inits, klass))) {
11665                                                         emit_class_init (cfg, klass);
11666                                                         if (cfg->verbose_level > 2)
11667                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11668                                                         class_inits = g_slist_prepend (class_inits, klass);
11669                                                 }
11670                                         } else {
11671                                                 if (cfg->run_cctors) {
11672                                                         /* This makes so that inline cannot trigger */
11673                                                         /* .cctors: too many apps depend on them */
11674                                                         /* running with a specific order... */
11675                                                         g_assert (vtable);
11676                                                         if (! vtable->initialized)
11677                                                                 INLINE_FAILURE ("class init");
11678                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11679                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11680                                                                 goto exception_exit;
11681                                                         }
11682                                                 }
11683                                         }
11684                                         if (cfg->compile_aot)
11685                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11686                                         else {
11687                                                 g_assert (vtable);
11688                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11689                                                 g_assert (addr);
11690                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11691                                         }
11692                                 } else {
11693                                         MonoInst *iargs [1];
11694                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11695                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11696                                 }
11697                         }
11698
11699                         /* Generate IR to do the actual load/store operation */
11700
11701                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11702                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11703                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11704                         }
11705
11706                         if (op == CEE_LDSFLDA) {
11707                                 ins->klass = mono_class_from_mono_type (ftype);
11708                                 ins->type = STACK_PTR;
11709                                 *sp++ = ins;
11710                         } else if (op == CEE_STSFLD) {
11711                                 MonoInst *store;
11712
11713                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11714                                 store->flags |= ins_flag;
11715                         } else {
11716                                 gboolean is_const = FALSE;
11717                                 MonoVTable *vtable = NULL;
11718                                 gpointer addr = NULL;
11719
11720                                 if (!context_used) {
11721                                         vtable = mono_class_vtable (cfg->domain, klass);
11722                                         CHECK_TYPELOAD (klass);
11723                                 }
11724                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11725                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11726                                         int ro_type = ftype->type;
11727                                         if (!addr)
11728                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11729                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11730                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11731                                         }
11732
11733                                         GSHAREDVT_FAILURE (op);
11734
11735                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11736                                         is_const = TRUE;
11737                                         switch (ro_type) {
11738                                         case MONO_TYPE_BOOLEAN:
11739                                         case MONO_TYPE_U1:
11740                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11741                                                 sp++;
11742                                                 break;
11743                                         case MONO_TYPE_I1:
11744                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11745                                                 sp++;
11746                                                 break;
11747                                         case MONO_TYPE_CHAR:
11748                                         case MONO_TYPE_U2:
11749                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11750                                                 sp++;
11751                                                 break;
11752                                         case MONO_TYPE_I2:
11753                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11754                                                 sp++;
11755                                                 break;
11756                                                 break;
11757                                         case MONO_TYPE_I4:
11758                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11759                                                 sp++;
11760                                                 break;
11761                                         case MONO_TYPE_U4:
11762                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11763                                                 sp++;
11764                                                 break;
11765                                         case MONO_TYPE_I:
11766                                         case MONO_TYPE_U:
11767                                         case MONO_TYPE_PTR:
11768                                         case MONO_TYPE_FNPTR:
11769                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11770                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11771                                                 sp++;
11772                                                 break;
11773                                         case MONO_TYPE_STRING:
11774                                         case MONO_TYPE_OBJECT:
11775                                         case MONO_TYPE_CLASS:
11776                                         case MONO_TYPE_SZARRAY:
11777                                         case MONO_TYPE_ARRAY:
11778                                                 if (!mono_gc_is_moving ()) {
11779                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11780                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11781                                                         sp++;
11782                                                 } else {
11783                                                         is_const = FALSE;
11784                                                 }
11785                                                 break;
11786                                         case MONO_TYPE_I8:
11787                                         case MONO_TYPE_U8:
11788                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11789                                                 sp++;
11790                                                 break;
11791                                         case MONO_TYPE_R4:
11792                                         case MONO_TYPE_R8:
11793                                         case MONO_TYPE_VALUETYPE:
11794                                         default:
11795                                                 is_const = FALSE;
11796                                                 break;
11797                                         }
11798                                 }
11799
11800                                 if (!is_const) {
11801                                         MonoInst *load;
11802
11803                                         CHECK_STACK_OVF (1);
11804
11805                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11806                                         load->flags |= ins_flag;
11807                                         ins_flag = 0;
11808                                         *sp++ = load;
11809                                 }
11810                         }
11811
11812                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11813                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11814                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11815                         }
11816
11817                         ins_flag = 0;
11818                         ip += 5;
11819                         break;
11820                 }
11821                 case CEE_STOBJ:
11822                         CHECK_STACK (2);
11823                         sp -= 2;
11824                         CHECK_OPSIZE (5);
11825                         token = read32 (ip + 1);
11826                         klass = mini_get_class (method, token, generic_context);
11827                         CHECK_TYPELOAD (klass);
11828                         if (ins_flag & MONO_INST_VOLATILE) {
11829                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11830                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11831                         }
11832                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11833                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11834                         ins->flags |= ins_flag;
11835                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11836                                 generic_class_is_reference_type (cfg, klass) && !MONO_INS_IS_PCONST_NULL (sp [1])) {
11837                                 /* insert call to write barrier */
11838                                 emit_write_barrier (cfg, sp [0], sp [1]);
11839                         }
11840                         ins_flag = 0;
11841                         ip += 5;
11842                         inline_costs += 1;
11843                         break;
11844
11845                         /*
11846                          * Array opcodes
11847                          */
11848                 case CEE_NEWARR: {
11849                         MonoInst *len_ins;
11850                         const char *data_ptr;
11851                         int data_size = 0;
11852                         guint32 field_token;
11853
11854                         CHECK_STACK (1);
11855                         --sp;
11856
11857                         CHECK_OPSIZE (5);
11858                         token = read32 (ip + 1);
11859
11860                         klass = mini_get_class (method, token, generic_context);
11861                         CHECK_TYPELOAD (klass);
11862
11863                         context_used = mini_class_check_context_used (cfg, klass);
11864
11865                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11866                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11867                                 ins->sreg1 = sp [0]->dreg;
11868                                 ins->type = STACK_I4;
11869                                 ins->dreg = alloc_ireg (cfg);
11870                                 MONO_ADD_INS (cfg->cbb, ins);
11871                                 *sp = mono_decompose_opcode (cfg, ins);
11872                         }
11873
11874                         if (context_used) {
11875                                 MonoInst *args [3];
11876                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11877                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11878
11879                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11880
11881                                 /* vtable */
11882                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11883                                         array_class, MONO_RGCTX_INFO_VTABLE);
11884                                 /* array len */
11885                                 args [1] = sp [0];
11886
11887                                 if (managed_alloc)
11888                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11889                                 else
11890                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11891                         } else {
11892                                 if (cfg->opt & MONO_OPT_SHARED) {
11893                                         /* Decompose now to avoid problems with references to the domainvar */
11894                                         MonoInst *iargs [3];
11895
11896                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11897                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11898                                         iargs [2] = sp [0];
11899
11900                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11901                                 } else {
11902                                         /* Decompose later since it is needed by abcrem */
11903                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11904                                         mono_class_vtable (cfg->domain, array_type);
11905                                         CHECK_TYPELOAD (array_type);
11906
11907                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11908                                         ins->dreg = alloc_ireg_ref (cfg);
11909                                         ins->sreg1 = sp [0]->dreg;
11910                                         ins->inst_newa_class = klass;
11911                                         ins->type = STACK_OBJ;
11912                                         ins->klass = array_type;
11913                                         MONO_ADD_INS (cfg->cbb, ins);
11914                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11915                                         cfg->cbb->has_array_access = TRUE;
11916
11917                                         /* Needed so mono_emit_load_get_addr () gets called */
11918                                         mono_get_got_var (cfg);
11919                                 }
11920                         }
11921
11922                         len_ins = sp [0];
11923                         ip += 5;
11924                         *sp++ = ins;
11925                         inline_costs += 1;
11926
11927                         /*
11928                          * we inline/optimize the initialization sequence if possible.
11929                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11930                          * for small sizes open code the memcpy
11931                          * ensure the rva field is big enough
11932                          */
11933                         if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, cfg->cbb, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
11934                                 MonoMethod *memcpy_method = get_memcpy_method ();
11935                                 MonoInst *iargs [3];
11936                                 int add_reg = alloc_ireg_mp (cfg);
11937
11938                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11939                                 if (cfg->compile_aot) {
11940                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11941                                 } else {
11942                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11943                                 }
11944                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11945                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11946                                 ip += 11;
11947                         }
11948
11949                         break;
11950                 }
11951                 case CEE_LDLEN:
11952                         CHECK_STACK (1);
11953                         --sp;
11954                         if (sp [0]->type != STACK_OBJ)
11955                                 UNVERIFIED;
11956
11957                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11958                         ins->dreg = alloc_preg (cfg);
11959                         ins->sreg1 = sp [0]->dreg;
11960                         ins->type = STACK_I4;
11961                         /* This flag will be inherited by the decomposition */
11962                         ins->flags |= MONO_INST_FAULT;
11963                         MONO_ADD_INS (cfg->cbb, ins);
11964                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11965                         cfg->cbb->has_array_access = TRUE;
11966                         ip ++;
11967                         *sp++ = ins;
11968                         break;
11969                 case CEE_LDELEMA:
11970                         CHECK_STACK (2);
11971                         sp -= 2;
11972                         CHECK_OPSIZE (5);
11973                         if (sp [0]->type != STACK_OBJ)
11974                                 UNVERIFIED;
11975
11976                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11977
11978                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11979                         CHECK_TYPELOAD (klass);
11980                         /* we need to make sure that this array is exactly the type it needs
11981                          * to be for correctness. the wrappers are lax with their usage
11982                          * so we need to ignore them here
11983                          */
11984                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11985                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11986                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11987                                 CHECK_TYPELOAD (array_class);
11988                         }
11989
11990                         readonly = FALSE;
11991                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11992                         *sp++ = ins;
11993                         ip += 5;
11994                         break;
11995                 case CEE_LDELEM:
11996                 case CEE_LDELEM_I1:
11997                 case CEE_LDELEM_U1:
11998                 case CEE_LDELEM_I2:
11999                 case CEE_LDELEM_U2:
12000                 case CEE_LDELEM_I4:
12001                 case CEE_LDELEM_U4:
12002                 case CEE_LDELEM_I8:
12003                 case CEE_LDELEM_I:
12004                 case CEE_LDELEM_R4:
12005                 case CEE_LDELEM_R8:
12006                 case CEE_LDELEM_REF: {
12007                         MonoInst *addr;
12008
12009                         CHECK_STACK (2);
12010                         sp -= 2;
12011
12012                         if (*ip == CEE_LDELEM) {
12013                                 CHECK_OPSIZE (5);
12014                                 token = read32 (ip + 1);
12015                                 klass = mini_get_class (method, token, generic_context);
12016                                 CHECK_TYPELOAD (klass);
12017                                 mono_class_init (klass);
12018                         }
12019                         else
12020                                 klass = array_access_to_klass (*ip);
12021
12022                         if (sp [0]->type != STACK_OBJ)
12023                                 UNVERIFIED;
12024
12025                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12026
12027                         if (mini_is_gsharedvt_variable_klass (klass)) {
12028                                 // FIXME-VT: OP_ICONST optimization
12029                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12030                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12031                                 ins->opcode = OP_LOADV_MEMBASE;
12032                         } else if (sp [1]->opcode == OP_ICONST) {
12033                                 int array_reg = sp [0]->dreg;
12034                                 int index_reg = sp [1]->dreg;
12035                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12036
12037                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12038                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12039
12040                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12041                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12042                         } else {
12043                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12044                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12045                         }
12046                         *sp++ = ins;
12047                         if (*ip == CEE_LDELEM)
12048                                 ip += 5;
12049                         else
12050                                 ++ip;
12051                         break;
12052                 }
12053                 case CEE_STELEM_I:
12054                 case CEE_STELEM_I1:
12055                 case CEE_STELEM_I2:
12056                 case CEE_STELEM_I4:
12057                 case CEE_STELEM_I8:
12058                 case CEE_STELEM_R4:
12059                 case CEE_STELEM_R8:
12060                 case CEE_STELEM_REF:
12061                 case CEE_STELEM: {
12062                         CHECK_STACK (3);
12063                         sp -= 3;
12064
12065                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12066
12067                         if (*ip == CEE_STELEM) {
12068                                 CHECK_OPSIZE (5);
12069                                 token = read32 (ip + 1);
12070                                 klass = mini_get_class (method, token, generic_context);
12071                                 CHECK_TYPELOAD (klass);
12072                                 mono_class_init (klass);
12073                         }
12074                         else
12075                                 klass = array_access_to_klass (*ip);
12076
12077                         if (sp [0]->type != STACK_OBJ)
12078                                 UNVERIFIED;
12079
12080                         emit_array_store (cfg, klass, sp, TRUE);
12081
12082                         if (*ip == CEE_STELEM)
12083                                 ip += 5;
12084                         else
12085                                 ++ip;
12086                         inline_costs += 1;
12087                         break;
12088                 }
12089                 case CEE_CKFINITE: {
12090                         CHECK_STACK (1);
12091                         --sp;
12092
12093                         if (cfg->llvm_only) {
12094                                 MonoInst *iargs [1];
12095
12096                                 iargs [0] = sp [0];
12097                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12098                         } else  {
12099                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12100                                 ins->sreg1 = sp [0]->dreg;
12101                                 ins->dreg = alloc_freg (cfg);
12102                                 ins->type = STACK_R8;
12103                                 MONO_ADD_INS (cfg->cbb, ins);
12104
12105                                 *sp++ = mono_decompose_opcode (cfg, ins);
12106                         }
12107
12108                         ++ip;
12109                         break;
12110                 }
12111                 case CEE_REFANYVAL: {
12112                         MonoInst *src_var, *src;
12113
12114                         int klass_reg = alloc_preg (cfg);
12115                         int dreg = alloc_preg (cfg);
12116
12117                         GSHAREDVT_FAILURE (*ip);
12118
12119                         CHECK_STACK (1);
12120                         MONO_INST_NEW (cfg, ins, *ip);
12121                         --sp;
12122                         CHECK_OPSIZE (5);
12123                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12124                         CHECK_TYPELOAD (klass);
12125
12126                         context_used = mini_class_check_context_used (cfg, klass);
12127
12128                         // FIXME:
12129                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12130                         if (!src_var)
12131                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12132                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12133                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12134
12135                         if (context_used) {
12136                                 MonoInst *klass_ins;
12137
12138                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12139                                                 klass, MONO_RGCTX_INFO_KLASS);
12140
12141                                 // FIXME:
12142                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12143                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12144                         } else {
12145                                 mini_emit_class_check (cfg, klass_reg, klass);
12146                         }
12147                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12148                         ins->type = STACK_MP;
12149                         ins->klass = klass;
12150                         *sp++ = ins;
12151                         ip += 5;
12152                         break;
12153                 }
12154                 case CEE_MKREFANY: {
12155                         MonoInst *loc, *addr;
12156
12157                         GSHAREDVT_FAILURE (*ip);
12158
12159                         CHECK_STACK (1);
12160                         MONO_INST_NEW (cfg, ins, *ip);
12161                         --sp;
12162                         CHECK_OPSIZE (5);
12163                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12164                         CHECK_TYPELOAD (klass);
12165
12166                         context_used = mini_class_check_context_used (cfg, klass);
12167
12168                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12169                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12170
12171                         if (context_used) {
12172                                 MonoInst *const_ins;
12173                                 int type_reg = alloc_preg (cfg);
12174
12175                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12176                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12177                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12178                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12179                         } else {
12180                                 int const_reg = alloc_preg (cfg);
12181                                 int type_reg = alloc_preg (cfg);
12182
12183                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12184                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12185                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12186                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12187                         }
12188                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12189
12190                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12191                         ins->type = STACK_VTYPE;
12192                         ins->klass = mono_defaults.typed_reference_class;
12193                         *sp++ = ins;
12194                         ip += 5;
12195                         break;
12196                 }
12197                 case CEE_LDTOKEN: {
12198                         gpointer handle;
12199                         MonoClass *handle_class;
12200
12201                         CHECK_STACK_OVF (1);
12202
12203                         CHECK_OPSIZE (5);
12204                         n = read32 (ip + 1);
12205
12206                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12207                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12208                                 handle = mono_method_get_wrapper_data (method, n);
12209                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12210                                 if (handle_class == mono_defaults.typehandle_class)
12211                                         handle = &((MonoClass*)handle)->byval_arg;
12212                         }
12213                         else {
12214                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12215                                 CHECK_CFG_ERROR;
12216                         }
12217                         if (!handle)
12218                                 LOAD_ERROR;
12219                         mono_class_init (handle_class);
12220                         if (cfg->gshared) {
12221                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12222                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12223                                         /* This case handles ldtoken
12224                                            of an open type, like for
12225                                            typeof(Gen<>). */
12226                                         context_used = 0;
12227                                 } else if (handle_class == mono_defaults.typehandle_class) {
12228                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12229                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12230                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12231                                 else if (handle_class == mono_defaults.methodhandle_class)
12232                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12233                                 else
12234                                         g_assert_not_reached ();
12235                         }
12236
12237                         if ((cfg->opt & MONO_OPT_SHARED) &&
12238                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12239                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12240                                 MonoInst *addr, *vtvar, *iargs [3];
12241                                 int method_context_used;
12242
12243                                 method_context_used = mini_method_check_context_used (cfg, method);
12244
12245                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12246
12247                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12248                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12249                                 if (method_context_used) {
12250                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12251                                                 method, MONO_RGCTX_INFO_METHOD);
12252                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12253                                 } else {
12254                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12255                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12256                                 }
12257                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12258
12259                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12260
12261                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12262                         } else {
12263                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12264                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12265                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12266                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12267                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12268                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12269
12270                                         mono_class_init (tclass);
12271                                         if (context_used) {
12272                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12273                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12274                                         } else if (cfg->compile_aot) {
12275                                                 if (method->wrapper_type) {
12276                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12277                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12278                                                                 /* Special case for static synchronized wrappers */
12279                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12280                                                         } else {
12281                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12282                                                                 /* FIXME: n is not a normal token */
12283                                                                 DISABLE_AOT (cfg);
12284                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12285                                                         }
12286                                                 } else {
12287                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12288                                                 }
12289                                         } else {
12290                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12291                                                 CHECK_CFG_ERROR;
12292                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12293                                         }
12294                                         ins->type = STACK_OBJ;
12295                                         ins->klass = cmethod->klass;
12296                                         ip += 5;
12297                                 } else {
12298                                         MonoInst *addr, *vtvar;
12299
12300                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12301
12302                                         if (context_used) {
12303                                                 if (handle_class == mono_defaults.typehandle_class) {
12304                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12305                                                                         mono_class_from_mono_type ((MonoType *)handle),
12306                                                                         MONO_RGCTX_INFO_TYPE);
12307                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12308                                                         ins = emit_get_rgctx_method (cfg, context_used,
12309                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12310                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12311                                                         ins = emit_get_rgctx_field (cfg, context_used,
12312                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12313                                                 } else {
12314                                                         g_assert_not_reached ();
12315                                                 }
12316                                         } else if (cfg->compile_aot) {
12317                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12318                                         } else {
12319                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12320                                         }
12321                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12322                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12323                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12324                                 }
12325                         }
12326
12327                         *sp++ = ins;
12328                         ip += 5;
12329                         break;
12330                 }
12331                 case CEE_THROW:
12332                         CHECK_STACK (1);
12333                         if (sp [-1]->type != STACK_OBJ)
12334                                 UNVERIFIED;
12335
12336                         MONO_INST_NEW (cfg, ins, OP_THROW);
12337                         --sp;
12338                         ins->sreg1 = sp [0]->dreg;
12339                         ip++;
12340                         cfg->cbb->out_of_line = TRUE;
12341                         MONO_ADD_INS (cfg->cbb, ins);
12342                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12343                         MONO_ADD_INS (cfg->cbb, ins);
12344                         sp = stack_start;
12345
12346                         link_bblock (cfg, cfg->cbb, end_bblock);
12347                         start_new_bblock = 1;
12348                         /* This can complicate code generation for llvm since the return value might not be defined */
12349                         if (COMPILE_LLVM (cfg))
12350                                 INLINE_FAILURE ("throw");
12351                         break;
12352                 case CEE_ENDFINALLY:
12353                         if (!ip_in_finally_clause (cfg, ip - header->code))
12354                                 UNVERIFIED;
12355                         /* mono_save_seq_point_info () depends on this */
12356                         if (sp != stack_start)
12357                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12358                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12359                         MONO_ADD_INS (cfg->cbb, ins);
12360                         ip++;
12361                         start_new_bblock = 1;
12362
12363                         /*
12364                          * Control will leave the method so empty the stack, otherwise
12365                          * the next basic block will start with a nonempty stack.
12366                          */
12367                         while (sp != stack_start) {
12368                                 sp--;
12369                         }
12370                         break;
12371                 case CEE_LEAVE:
12372                 case CEE_LEAVE_S: {
12373                         GList *handlers;
12374
12375                         if (*ip == CEE_LEAVE) {
12376                                 CHECK_OPSIZE (5);
12377                                 target = ip + 5 + (gint32)read32(ip + 1);
12378                         } else {
12379                                 CHECK_OPSIZE (2);
12380                                 target = ip + 2 + (signed char)(ip [1]);
12381                         }
12382
12383                         /* empty the stack */
12384                         while (sp != stack_start) {
12385                                 sp--;
12386                         }
12387
12388                         /*
12389                          * If this leave statement is in a catch block, check for a
12390                          * pending exception, and rethrow it if necessary.
12391                          * We avoid doing this in runtime invoke wrappers, since those are called
12392                          * by native code which excepts the wrapper to catch all exceptions.
12393                          */
12394                         for (i = 0; i < header->num_clauses; ++i) {
12395                                 MonoExceptionClause *clause = &header->clauses [i];
12396
12397                                 /*
12398                                  * Use <= in the final comparison to handle clauses with multiple
12399                                  * leave statements, like in bug #78024.
12400                                  * The ordering of the exception clauses guarantees that we find the
12401                                  * innermost clause.
12402                                  */
12403                                 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
12404                                         MonoInst *exc_ins;
12405                                         MonoBasicBlock *dont_throw;
12406
12407                                         /*
12408                                           MonoInst *load;
12409
12410                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12411                                         */
12412
12413                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12414
12415                                         NEW_BBLOCK (cfg, dont_throw);
12416
12417                                         /*
12418                                          * Currently, we always rethrow the abort exception, despite the
12419                                          * fact that this is not correct. See thread6.cs for an example.
12420                                          * But propagating the abort exception is more important than
12421                                          * getting the sematics right.
12422                                          */
12423                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12424                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12425                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12426
12427                                         MONO_START_BB (cfg, dont_throw);
12428                                 }
12429                         }
12430
12431 #ifdef ENABLE_LLVM
12432                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12433 #endif
12434
12435                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12436                                 GList *tmp;
12437                                 MonoExceptionClause *clause;
12438
12439                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12440                                         clause = (MonoExceptionClause *)tmp->data;
12441                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12442                                         g_assert (tblock);
12443                                         link_bblock (cfg, cfg->cbb, tblock);
12444                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12445                                         ins->inst_target_bb = tblock;
12446                                         ins->inst_eh_block = clause;
12447                                         MONO_ADD_INS (cfg->cbb, ins);
12448                                         cfg->cbb->has_call_handler = 1;
12449                                         if (COMPILE_LLVM (cfg)) {
12450                                                 MonoBasicBlock *target_bb;
12451
12452                                                 /*
12453                                                  * Link the finally bblock with the target, since it will
12454                                                  * conceptually branch there.
12455                                                  */
12456                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12457                                                 GET_BBLOCK (cfg, target_bb, target);
12458                                                 link_bblock (cfg, tblock, target_bb);
12459                                         }
12460                                 }
12461                                 g_list_free (handlers);
12462                         }
12463
12464                         MONO_INST_NEW (cfg, ins, OP_BR);
12465                         MONO_ADD_INS (cfg->cbb, ins);
12466                         GET_BBLOCK (cfg, tblock, target);
12467                         link_bblock (cfg, cfg->cbb, tblock);
12468                         ins->inst_target_bb = tblock;
12469
12470                         start_new_bblock = 1;
12471
12472                         if (*ip == CEE_LEAVE)
12473                                 ip += 5;
12474                         else
12475                                 ip += 2;
12476
12477                         break;
12478                 }
12479
12480                         /*
12481                          * Mono specific opcodes
12482                          */
12483                 case MONO_CUSTOM_PREFIX: {
12484
12485                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12486
12487                         CHECK_OPSIZE (2);
12488                         switch (ip [1]) {
12489                         case CEE_MONO_ICALL: {
12490                                 gpointer func;
12491                                 MonoJitICallInfo *info;
12492
12493                                 token = read32 (ip + 2);
12494                                 func = mono_method_get_wrapper_data (method, token);
12495                                 info = mono_find_jit_icall_by_addr (func);
12496                                 if (!info)
12497                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12498                                 g_assert (info);
12499
12500                                 CHECK_STACK (info->sig->param_count);
12501                                 sp -= info->sig->param_count;
12502
12503                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12504                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12505                                         *sp++ = ins;
12506
12507                                 ip += 6;
12508                                 inline_costs += 10 * num_calls++;
12509
12510                                 break;
12511                         }
12512                         case CEE_MONO_LDPTR_CARD_TABLE:
12513                         case CEE_MONO_LDPTR_NURSERY_START:
12514                         case CEE_MONO_LDPTR_NURSERY_BITS:
12515                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12516                                 CHECK_STACK_OVF (1);
12517
12518                                 switch (ip [1]) {
12519                                         case CEE_MONO_LDPTR_CARD_TABLE:
12520                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12521                                                 break;
12522                                         case CEE_MONO_LDPTR_NURSERY_START:
12523                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12524                                                 break;
12525                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12526                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12527                                                 break;
12528                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12529                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12530                                                 break;
12531                                 }
12532
12533                                 *sp++ = ins;
12534                                 ip += 2;
12535                                 inline_costs += 10 * num_calls++;
12536                                 break;
12537                         }
12538                         case CEE_MONO_LDPTR: {
12539                                 gpointer ptr;
12540
12541                                 CHECK_STACK_OVF (1);
12542                                 CHECK_OPSIZE (6);
12543                                 token = read32 (ip + 2);
12544
12545                                 ptr = mono_method_get_wrapper_data (method, token);
12546                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12547                                 *sp++ = ins;
12548                                 ip += 6;
12549                                 inline_costs += 10 * num_calls++;
12550                                 /* Can't embed random pointers into AOT code */
12551                                 DISABLE_AOT (cfg);
12552                                 break;
12553                         }
12554                         case CEE_MONO_JIT_ICALL_ADDR: {
12555                                 MonoJitICallInfo *callinfo;
12556                                 gpointer ptr;
12557
12558                                 CHECK_STACK_OVF (1);
12559                                 CHECK_OPSIZE (6);
12560                                 token = read32 (ip + 2);
12561
12562                                 ptr = mono_method_get_wrapper_data (method, token);
12563                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12564                                 g_assert (callinfo);
12565                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12566                                 *sp++ = ins;
12567                                 ip += 6;
12568                                 inline_costs += 10 * num_calls++;
12569                                 break;
12570                         }
12571                         case CEE_MONO_ICALL_ADDR: {
12572                                 MonoMethod *cmethod;
12573                                 gpointer ptr;
12574
12575                                 CHECK_STACK_OVF (1);
12576                                 CHECK_OPSIZE (6);
12577                                 token = read32 (ip + 2);
12578
12579                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12580
12581                                 if (cfg->compile_aot) {
12582                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12583                                 } else {
12584                                         ptr = mono_lookup_internal_call (cmethod);
12585                                         g_assert (ptr);
12586                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12587                                 }
12588                                 *sp++ = ins;
12589                                 ip += 6;
12590                                 break;
12591                         }
12592                         case CEE_MONO_VTADDR: {
12593                                 MonoInst *src_var, *src;
12594
12595                                 CHECK_STACK (1);
12596                                 --sp;
12597
12598                                 // FIXME:
12599                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12600                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12601                                 *sp++ = src;
12602                                 ip += 2;
12603                                 break;
12604                         }
12605                         case CEE_MONO_NEWOBJ: {
12606                                 MonoInst *iargs [2];
12607
12608                                 CHECK_STACK_OVF (1);
12609                                 CHECK_OPSIZE (6);
12610                                 token = read32 (ip + 2);
12611                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12612                                 mono_class_init (klass);
12613                                 NEW_DOMAINCONST (cfg, iargs [0]);
12614                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12615                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12616                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12617                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12618                                 ip += 6;
12619                                 inline_costs += 10 * num_calls++;
12620                                 break;
12621                         }
12622                         case CEE_MONO_OBJADDR:
12623                                 CHECK_STACK (1);
12624                                 --sp;
12625                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12626                                 ins->dreg = alloc_ireg_mp (cfg);
12627                                 ins->sreg1 = sp [0]->dreg;
12628                                 ins->type = STACK_MP;
12629                                 MONO_ADD_INS (cfg->cbb, ins);
12630                                 *sp++ = ins;
12631                                 ip += 2;
12632                                 break;
12633                         case CEE_MONO_LDNATIVEOBJ:
12634                                 /*
12635                                  * Similar to LDOBJ, but instead load the unmanaged
12636                                  * representation of the vtype to the stack.
12637                                  */
12638                                 CHECK_STACK (1);
12639                                 CHECK_OPSIZE (6);
12640                                 --sp;
12641                                 token = read32 (ip + 2);
12642                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12643                                 g_assert (klass->valuetype);
12644                                 mono_class_init (klass);
12645
12646                                 {
12647                                         MonoInst *src, *dest, *temp;
12648
12649                                         src = sp [0];
12650                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12651                                         temp->backend.is_pinvoke = 1;
12652                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12653                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12654
12655                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12656                                         dest->type = STACK_VTYPE;
12657                                         dest->klass = klass;
12658
12659                                         *sp ++ = dest;
12660                                         ip += 6;
12661                                 }
12662                                 break;
12663                         case CEE_MONO_RETOBJ: {
12664                                 /*
12665                                  * Same as RET, but return the native representation of a vtype
12666                                  * to the caller.
12667                                  */
12668                                 g_assert (cfg->ret);
12669                                 g_assert (mono_method_signature (method)->pinvoke);
12670                                 CHECK_STACK (1);
12671                                 --sp;
12672
12673                                 CHECK_OPSIZE (6);
12674                                 token = read32 (ip + 2);
12675                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12676
12677                                 if (!cfg->vret_addr) {
12678                                         g_assert (cfg->ret_var_is_local);
12679
12680                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12681                                 } else {
12682                                         EMIT_NEW_RETLOADA (cfg, ins);
12683                                 }
12684                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12685
12686                                 if (sp != stack_start)
12687                                         UNVERIFIED;
12688
12689                                 MONO_INST_NEW (cfg, ins, OP_BR);
12690                                 ins->inst_target_bb = end_bblock;
12691                                 MONO_ADD_INS (cfg->cbb, ins);
12692                                 link_bblock (cfg, cfg->cbb, end_bblock);
12693                                 start_new_bblock = 1;
12694                                 ip += 6;
12695                                 break;
12696                         }
12697                         case CEE_MONO_CISINST:
12698                         case CEE_MONO_CCASTCLASS: {
12699                                 int token;
12700                                 CHECK_STACK (1);
12701                                 --sp;
12702                                 CHECK_OPSIZE (6);
12703                                 token = read32 (ip + 2);
12704                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12705                                 if (ip [1] == CEE_MONO_CISINST)
12706                                         ins = handle_cisinst (cfg, klass, sp [0]);
12707                                 else
12708                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12709                                 *sp++ = ins;
12710                                 ip += 6;
12711                                 break;
12712                         }
12713                         case CEE_MONO_SAVE_LMF:
12714                         case CEE_MONO_RESTORE_LMF:
12715                                 ip += 2;
12716                                 break;
12717                         case CEE_MONO_CLASSCONST:
12718                                 CHECK_STACK_OVF (1);
12719                                 CHECK_OPSIZE (6);
12720                                 token = read32 (ip + 2);
12721                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12722                                 *sp++ = ins;
12723                                 ip += 6;
12724                                 inline_costs += 10 * num_calls++;
12725                                 break;
12726                         case CEE_MONO_NOT_TAKEN:
12727                                 cfg->cbb->out_of_line = TRUE;
12728                                 ip += 2;
12729                                 break;
12730                         case CEE_MONO_TLS: {
12731                                 MonoTlsKey key;
12732
12733                                 CHECK_STACK_OVF (1);
12734                                 CHECK_OPSIZE (6);
12735                                 key = (MonoTlsKey)read32 (ip + 2);
12736                                 g_assert (key < TLS_KEY_NUM);
12737
12738                                 ins = mono_create_tls_get (cfg, key);
12739                                 if (!ins) {
12740                                         if (cfg->compile_aot) {
12741                                                 DISABLE_AOT (cfg);
12742                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12743                                                 ins->dreg = alloc_preg (cfg);
12744                                                 ins->type = STACK_PTR;
12745                                         } else {
12746                                                 g_assert_not_reached ();
12747                                         }
12748                                 }
12749                                 ins->type = STACK_PTR;
12750                                 MONO_ADD_INS (cfg->cbb, ins);
12751                                 *sp++ = ins;
12752                                 ip += 6;
12753                                 break;
12754                         }
12755                         case CEE_MONO_DYN_CALL: {
12756                                 MonoCallInst *call;
12757
12758                                 /* It would be easier to call a trampoline, but that would put an
12759                                  * extra frame on the stack, confusing exception handling. So
12760                                  * implement it inline using an opcode for now.
12761                                  */
12762
12763                                 if (!cfg->dyn_call_var) {
12764                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12765                                         /* prevent it from being register allocated */
12766                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12767                                 }
12768
12769                                 /* Has to use a call inst since it local regalloc expects it */
12770                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12771                                 ins = (MonoInst*)call;
12772                                 sp -= 2;
12773                                 ins->sreg1 = sp [0]->dreg;
12774                                 ins->sreg2 = sp [1]->dreg;
12775                                 MONO_ADD_INS (cfg->cbb, ins);
12776
12777                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12778
12779                                 ip += 2;
12780                                 inline_costs += 10 * num_calls++;
12781
12782                                 break;
12783                         }
12784                         case CEE_MONO_MEMORY_BARRIER: {
12785                                 CHECK_OPSIZE (6);
12786                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12787                                 ip += 6;
12788                                 break;
12789                         }
12790                         case CEE_MONO_ATOMIC_STORE_I4: {
12791                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12792
12793                                 CHECK_OPSIZE (6);
12794                                 CHECK_STACK (2);
12795                                 sp -= 2;
12796
12797                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12798                                 ins->dreg = sp [0]->dreg;
12799                                 ins->sreg1 = sp [1]->dreg;
12800                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12801                                 MONO_ADD_INS (cfg->cbb, ins);
12802
12803                                 ip += 6;
12804                                 break;
12805                         }
12806                         case CEE_MONO_JIT_ATTACH: {
12807                                 MonoInst *args [16], *domain_ins;
12808                                 MonoInst *ad_ins, *jit_tls_ins;
12809                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12810
12811                                 g_assert (!mono_threads_is_coop_enabled ());
12812
12813                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12814
12815                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12816                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12817
12818                                 ad_ins = mono_get_domain_intrinsic (cfg);
12819                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12820
12821                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12822                                         NEW_BBLOCK (cfg, next_bb);
12823                                         NEW_BBLOCK (cfg, call_bb);
12824
12825                                         if (cfg->compile_aot) {
12826                                                 /* AOT code is only used in the root domain */
12827                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12828                                         } else {
12829                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12830                                         }
12831                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12832                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12833                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12834
12835                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12836                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12837                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12838
12839                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12840                                         MONO_START_BB (cfg, call_bb);
12841                                 }
12842
12843                                 /* AOT code is only used in the root domain */
12844                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12845                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12846                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12847
12848                                 if (next_bb)
12849                                         MONO_START_BB (cfg, next_bb);
12850
12851
12852                                 ip += 2;
12853                                 break;
12854                         }
12855                         case CEE_MONO_JIT_DETACH: {
12856                                 MonoInst *args [16];
12857
12858                                 /* Restore the original domain */
12859                                 dreg = alloc_ireg (cfg);
12860                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12861                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12862                                 ip += 2;
12863                                 break;
12864                         }
12865                         case CEE_MONO_CALLI_EXTRA_ARG: {
12866                                 MonoInst *addr;
12867                                 MonoMethodSignature *fsig;
12868                                 MonoInst *arg;
12869
12870                                 /*
12871                                  * This is the same as CEE_CALLI, but passes an additional argument
12872                                  * to the called method in llvmonly mode.
12873                                  * This is only used by delegate invoke wrappers to call the
12874                                  * actual delegate method.
12875                                  */
12876                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12877
12878                                 CHECK_OPSIZE (6);
12879                                 token = read32 (ip + 2);
12880
12881                                 ins = NULL;
12882
12883                                 cmethod = NULL;
12884                                 CHECK_STACK (1);
12885                                 --sp;
12886                                 addr = *sp;
12887                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12888                                 CHECK_CFG_ERROR;
12889
12890                                 if (cfg->llvm_only)
12891                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12892
12893                                 n = fsig->param_count + fsig->hasthis + 1;
12894
12895                                 CHECK_STACK (n);
12896
12897                                 sp -= n;
12898                                 arg = sp [n - 1];
12899
12900                                 if (cfg->llvm_only) {
12901                                         /*
12902                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12903                                          * cconv. This is set by mono_init_delegate ().
12904                                          */
12905                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12906                                                 MonoInst *callee = addr;
12907                                                 MonoInst *call, *localloc_ins;
12908                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12909                                                 int low_bit_reg = alloc_preg (cfg);
12910
12911                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12912                                                 NEW_BBLOCK (cfg, end_bb);
12913
12914                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12915                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12916                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12917
12918                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12919                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12920                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12921                                                 /*
12922                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12923                                                  */
12924                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12925                                                 ins->dreg = alloc_preg (cfg);
12926                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12927                                                 MONO_ADD_INS (cfg->cbb, ins);
12928                                                 localloc_ins = ins;
12929                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12930                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12931                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12932
12933                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12934                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12935
12936                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12937                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12938                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12939                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12940                                                 ins->dreg = call->dreg;
12941
12942                                                 MONO_START_BB (cfg, end_bb);
12943                                         } else {
12944                                                 /* Caller uses a normal calling conv */
12945
12946                                                 MonoInst *callee = addr;
12947                                                 MonoInst *call, *localloc_ins;
12948                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12949                                                 int low_bit_reg = alloc_preg (cfg);
12950
12951                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12952                                                 NEW_BBLOCK (cfg, end_bb);
12953
12954                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12955                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12956                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12957
12958                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12959                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12960                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12961                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12962                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12963                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12964                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12965                                                 MONO_ADD_INS (cfg->cbb, addr);
12966                                                 /*
12967                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12968                                                  */
12969                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12970                                                 ins->dreg = alloc_preg (cfg);
12971                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12972                                                 MONO_ADD_INS (cfg->cbb, ins);
12973                                                 localloc_ins = ins;
12974                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12975                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12976                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12977
12978                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12979                                                 ins->dreg = call->dreg;
12980                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12981
12982                                                 MONO_START_BB (cfg, end_bb);
12983                                         }
12984                                 } else {
12985                                         /* Same as CEE_CALLI */
12986                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12987                                                 /*
12988                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12989                                                  */
12990                                                 MonoInst *callee = addr;
12991
12992                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12993                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12994                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12995                                         } else {
12996                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12997                                         }
12998                                 }
12999
13000                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
13001                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
13002
13003                                 CHECK_CFG_EXCEPTION;
13004
13005                                 ip += 6;
13006                                 ins_flag = 0;
13007                                 constrained_class = NULL;
13008                                 break;
13009                         }
13010                         case CEE_MONO_LDDOMAIN:
13011                                 CHECK_STACK_OVF (1);
13012                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
13013                                 ip += 2;
13014                                 *sp++ = ins;
13015                                 break;
13016                         case CEE_MONO_GET_LAST_ERROR:
13017                                 CHECK_OPSIZE (2);
13018                                 CHECK_STACK_OVF (1);
13019
13020                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
13021                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
13022                                 ins->type = STACK_I4;
13023                                 MONO_ADD_INS (cfg->cbb, ins);
13024
13025                                 ip += 2;
13026                                 *sp++ = ins;
13027                                 break;
13028                         default:
13029                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
13030                                 break;
13031                         }
13032                         break;
13033                 }
13034
13035                 case CEE_PREFIX1: {
13036                         CHECK_OPSIZE (2);
13037                         switch (ip [1]) {
13038                         case CEE_ARGLIST: {
13039                                 /* somewhat similar to LDTOKEN */
13040                                 MonoInst *addr, *vtvar;
13041                                 CHECK_STACK_OVF (1);
13042                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
13043
13044                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
13045                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
13046
13047                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
13048                                 ins->type = STACK_VTYPE;
13049                                 ins->klass = mono_defaults.argumenthandle_class;
13050                                 *sp++ = ins;
13051                                 ip += 2;
13052                                 break;
13053                         }
13054                         case CEE_CEQ:
13055                         case CEE_CGT:
13056                         case CEE_CGT_UN:
13057                         case CEE_CLT:
13058                         case CEE_CLT_UN: {
13059                                 MonoInst *cmp, *arg1, *arg2;
13060
13061                                 CHECK_STACK (2);
13062                                 sp -= 2;
13063                                 arg1 = sp [0];
13064                                 arg2 = sp [1];
13065
13066                                 /*
13067                                  * The following transforms:
13068                                  *    CEE_CEQ    into OP_CEQ
13069                                  *    CEE_CGT    into OP_CGT
13070                                  *    CEE_CGT_UN into OP_CGT_UN
13071                                  *    CEE_CLT    into OP_CLT
13072                                  *    CEE_CLT_UN into OP_CLT_UN
13073                                  */
13074                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13075
13076                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13077                                 cmp->sreg1 = arg1->dreg;
13078                                 cmp->sreg2 = arg2->dreg;
13079                                 type_from_op (cfg, cmp, arg1, arg2);
13080                                 CHECK_TYPE (cmp);
13081                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13082                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13083                                         cmp->opcode = OP_LCOMPARE;
13084                                 else if (arg1->type == STACK_R4)
13085                                         cmp->opcode = OP_RCOMPARE;
13086                                 else if (arg1->type == STACK_R8)
13087                                         cmp->opcode = OP_FCOMPARE;
13088                                 else
13089                                         cmp->opcode = OP_ICOMPARE;
13090                                 MONO_ADD_INS (cfg->cbb, cmp);
13091                                 ins->type = STACK_I4;
13092                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13093                                 type_from_op (cfg, ins, arg1, arg2);
13094
13095                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13096                                         /*
13097                                          * The backends expect the fceq opcodes to do the
13098                                          * comparison too.
13099                                          */
13100                                         ins->sreg1 = cmp->sreg1;
13101                                         ins->sreg2 = cmp->sreg2;
13102                                         NULLIFY_INS (cmp);
13103                                 }
13104                                 MONO_ADD_INS (cfg->cbb, ins);
13105                                 *sp++ = ins;
13106                                 ip += 2;
13107                                 break;
13108                         }
13109                         case CEE_LDFTN: {
13110                                 MonoInst *argconst;
13111                                 MonoMethod *cil_method;
13112
13113                                 CHECK_STACK_OVF (1);
13114                                 CHECK_OPSIZE (6);
13115                                 n = read32 (ip + 2);
13116                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13117                                 CHECK_CFG_ERROR;
13118
13119                                 mono_class_init (cmethod->klass);
13120
13121                                 mono_save_token_info (cfg, image, n, cmethod);
13122
13123                                 context_used = mini_method_check_context_used (cfg, cmethod);
13124
13125                                 cil_method = cmethod;
13126                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13127                                         emit_method_access_failure (cfg, method, cil_method);
13128
13129                                 if (mono_security_core_clr_enabled ())
13130                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13131
13132                                 /*
13133                                  * Optimize the common case of ldftn+delegate creation
13134                                  */
13135                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13136                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13137                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13138                                                 MonoInst *target_ins, *handle_ins;
13139                                                 MonoMethod *invoke;
13140                                                 int invoke_context_used;
13141
13142                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13143                                                 if (!invoke || !mono_method_signature (invoke))
13144                                                         LOAD_ERROR;
13145
13146                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13147
13148                                                 target_ins = sp [-1];
13149
13150                                                 if (mono_security_core_clr_enabled ())
13151                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13152
13153                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13154                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13155                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13156                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13157                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13158                                                         }
13159                                                 }
13160
13161                                                 /* FIXME: SGEN support */
13162                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13163                                                         ip += 6;
13164                                                         if (cfg->verbose_level > 3)
13165                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13166                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13167                                                                 sp --;
13168                                                                 *sp = handle_ins;
13169                                                                 CHECK_CFG_EXCEPTION;
13170                                                                 ip += 5;
13171                                                                 sp ++;
13172                                                                 break;
13173                                                         }
13174                                                         ip -= 6;
13175                                                 }
13176                                         }
13177                                 }
13178
13179                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13180                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13181                                 *sp++ = ins;
13182
13183                                 ip += 6;
13184                                 inline_costs += 10 * num_calls++;
13185                                 break;
13186                         }
13187                         case CEE_LDVIRTFTN: {
13188                                 MonoInst *args [2];
13189
13190                                 CHECK_STACK (1);
13191                                 CHECK_OPSIZE (6);
13192                                 n = read32 (ip + 2);
13193                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13194                                 CHECK_CFG_ERROR;
13195
13196                                 mono_class_init (cmethod->klass);
13197
13198                                 context_used = mini_method_check_context_used (cfg, cmethod);
13199
13200                                 if (mono_security_core_clr_enabled ())
13201                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13202
13203                                 /*
13204                                  * Optimize the common case of ldvirtftn+delegate creation
13205                                  */
13206                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ) && (ip > header->code && ip [-1] == CEE_DUP)) {
13207                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13208                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13209                                                 MonoInst *target_ins, *handle_ins;
13210                                                 MonoMethod *invoke;
13211                                                 int invoke_context_used;
13212                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13213
13214                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13215                                                 if (!invoke || !mono_method_signature (invoke))
13216                                                         LOAD_ERROR;
13217
13218                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13219
13220                                                 target_ins = sp [-1];
13221
13222                                                 if (mono_security_core_clr_enabled ())
13223                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13224
13225                                                 /* FIXME: SGEN support */
13226                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13227                                                         ip += 6;
13228                                                         if (cfg->verbose_level > 3)
13229                                                                 g_print ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
13230                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13231                                                                 sp -= 2;
13232                                                                 *sp = handle_ins;
13233                                                                 CHECK_CFG_EXCEPTION;
13234                                                                 ip += 5;
13235                                                                 sp ++;
13236                                                                 break;
13237                                                         }
13238                                                         ip -= 6;
13239                                                 }
13240                                         }
13241                                 }
13242
13243                                 --sp;
13244                                 args [0] = *sp;
13245
13246                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13247                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13248
13249                                 if (context_used)
13250                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13251                                 else
13252                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13253
13254                                 ip += 6;
13255                                 inline_costs += 10 * num_calls++;
13256                                 break;
13257                         }
13258                         case CEE_LDARG:
13259                                 CHECK_STACK_OVF (1);
13260                                 CHECK_OPSIZE (4);
13261                                 n = read16 (ip + 2);
13262                                 CHECK_ARG (n);
13263                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13264                                 *sp++ = ins;
13265                                 ip += 4;
13266                                 break;
13267                         case CEE_LDARGA:
13268                                 CHECK_STACK_OVF (1);
13269                                 CHECK_OPSIZE (4);
13270                                 n = read16 (ip + 2);
13271                                 CHECK_ARG (n);
13272                                 NEW_ARGLOADA (cfg, ins, n);
13273                                 MONO_ADD_INS (cfg->cbb, ins);
13274                                 *sp++ = ins;
13275                                 ip += 4;
13276                                 break;
13277                         case CEE_STARG:
13278                                 CHECK_STACK (1);
13279                                 --sp;
13280                                 CHECK_OPSIZE (4);
13281                                 n = read16 (ip + 2);
13282                                 CHECK_ARG (n);
13283                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13284                                         UNVERIFIED;
13285                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13286                                 ip += 4;
13287                                 break;
13288                         case CEE_LDLOC:
13289                                 CHECK_STACK_OVF (1);
13290                                 CHECK_OPSIZE (4);
13291                                 n = read16 (ip + 2);
13292                                 CHECK_LOCAL (n);
13293                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13294                                 *sp++ = ins;
13295                                 ip += 4;
13296                                 break;
13297                         case CEE_LDLOCA: {
13298                                 unsigned char *tmp_ip;
13299                                 CHECK_STACK_OVF (1);
13300                                 CHECK_OPSIZE (4);
13301                                 n = read16 (ip + 2);
13302                                 CHECK_LOCAL (n);
13303
13304                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13305                                         ip = tmp_ip;
13306                                         inline_costs += 1;
13307                                         break;
13308                                 }
13309
13310                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13311                                 *sp++ = ins;
13312                                 ip += 4;
13313                                 break;
13314                         }
13315                         case CEE_STLOC:
13316                                 CHECK_STACK (1);
13317                                 --sp;
13318                                 CHECK_OPSIZE (4);
13319                                 n = read16 (ip + 2);
13320                                 CHECK_LOCAL (n);
13321                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13322                                         UNVERIFIED;
13323                                 emit_stloc_ir (cfg, sp, header, n);
13324                                 ip += 4;
13325                                 inline_costs += 1;
13326                                 break;
13327                         case CEE_LOCALLOC: {
13328                                 CHECK_STACK (1);
13329                                 MonoBasicBlock *non_zero_bb, *end_bb;
13330                                 int alloc_ptr = alloc_preg (cfg);
13331                                 --sp;
13332                                 if (sp != stack_start)
13333                                         UNVERIFIED;
13334                                 if (cfg->method != method)
13335                                         /*
13336                                          * Inlining this into a loop in a parent could lead to
13337                                          * stack overflows which is different behavior than the
13338                                          * non-inlined case, thus disable inlining in this case.
13339                                          */
13340                                         INLINE_FAILURE("localloc");
13341
13342                                 NEW_BBLOCK (cfg, non_zero_bb);
13343                                 NEW_BBLOCK (cfg, end_bb);
13344
13345                                 /* if size != zero */
13346                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
13347                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
13348
13349                                 //size is zero, so result is NULL
13350                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
13351                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
13352
13353                                 MONO_START_BB (cfg, non_zero_bb);
13354                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13355                                 ins->dreg = alloc_ptr;
13356                                 ins->sreg1 = sp [0]->dreg;
13357                                 ins->type = STACK_PTR;
13358                                 MONO_ADD_INS (cfg->cbb, ins);
13359
13360                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13361                                 if (init_locals)
13362                                         ins->flags |= MONO_INST_INIT;
13363
13364                                 MONO_START_BB (cfg, end_bb);
13365                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
13366                                 ins->type = STACK_PTR;
13367
13368                                 *sp++ = ins;
13369                                 ip += 2;
13370                                 break;
13371                         }
13372                         case CEE_ENDFILTER: {
13373                                 MonoExceptionClause *clause, *nearest;
13374                                 int cc;
13375
13376                                 CHECK_STACK (1);
13377                                 --sp;
13378                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13379                                         UNVERIFIED;
13380                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13381                                 ins->sreg1 = (*sp)->dreg;
13382                                 MONO_ADD_INS (cfg->cbb, ins);
13383                                 start_new_bblock = 1;
13384                                 ip += 2;
13385
13386                                 nearest = NULL;
13387                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13388                                         clause = &header->clauses [cc];
13389                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13390                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13391                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13392                                                 nearest = clause;
13393                                 }
13394                                 g_assert (nearest);
13395                                 if ((ip - header->code) != nearest->handler_offset)
13396                                         UNVERIFIED;
13397
13398                                 break;
13399                         }
13400                         case CEE_UNALIGNED_:
13401                                 ins_flag |= MONO_INST_UNALIGNED;
13402                                 /* FIXME: record alignment? we can assume 1 for now */
13403                                 CHECK_OPSIZE (3);
13404                                 ip += 3;
13405                                 break;
13406                         case CEE_VOLATILE_:
13407                                 ins_flag |= MONO_INST_VOLATILE;
13408                                 ip += 2;
13409                                 break;
13410                         case CEE_TAIL_:
13411                                 ins_flag   |= MONO_INST_TAILCALL;
13412                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13413                                 /* Can't inline tail calls at this time */
13414                                 inline_costs += 100000;
13415                                 ip += 2;
13416                                 break;
13417                         case CEE_INITOBJ:
13418                                 CHECK_STACK (1);
13419                                 --sp;
13420                                 CHECK_OPSIZE (6);
13421                                 token = read32 (ip + 2);
13422                                 klass = mini_get_class (method, token, generic_context);
13423                                 CHECK_TYPELOAD (klass);
13424                                 if (generic_class_is_reference_type (cfg, klass))
13425                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13426                                 else
13427                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13428                                 ip += 6;
13429                                 inline_costs += 1;
13430                                 break;
13431                         case CEE_CONSTRAINED_:
13432                                 CHECK_OPSIZE (6);
13433                                 token = read32 (ip + 2);
13434                                 constrained_class = mini_get_class (method, token, generic_context);
13435                                 CHECK_TYPELOAD (constrained_class);
13436                                 ip += 6;
13437                                 break;
13438                         case CEE_CPBLK:
13439                         case CEE_INITBLK: {
13440                                 MonoInst *iargs [3];
13441                                 CHECK_STACK (3);
13442                                 sp -= 3;
13443
13444                                 /* Skip optimized paths for volatile operations. */
13445                                 if ((ip [1] == CEE_CPBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
13446                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13447                                 } else if ((ip [1] == CEE_INITBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
13448                                         /* emit_memset only works when val == 0 */
13449                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13450                                 } else {
13451                                         MonoInst *call;
13452                                         iargs [0] = sp [0];
13453                                         iargs [1] = sp [1];
13454                                         iargs [2] = sp [2];
13455                                         if (ip [1] == CEE_CPBLK) {
13456                                                 /*
13457                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13458                                                  * and release barriers for cpblk. It is technically both a load and
13459                                                  * store operation, so it seems like that's the sensible thing to do.
13460                                                  *
13461                                                  * FIXME: We emit full barriers on both sides of the operation for
13462                                                  * simplicity. We should have a separate atomic memcpy method instead.
13463                                                  */
13464                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13465
13466                                                 if (ins_flag & MONO_INST_VOLATILE)
13467                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13468
13469                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13470                                                 call->flags |= ins_flag;
13471
13472                                                 if (ins_flag & MONO_INST_VOLATILE)
13473                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13474                                         } else {
13475                                                 MonoMethod *memset_method = get_memset_method ();
13476                                                 if (ins_flag & MONO_INST_VOLATILE) {
13477                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13478                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13479                                                 }
13480                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13481                                                 call->flags |= ins_flag;
13482                                         }
13483                                 }
13484                                 ip += 2;
13485                                 ins_flag = 0;
13486                                 inline_costs += 1;
13487                                 break;
13488                         }
13489                         case CEE_NO_:
13490                                 CHECK_OPSIZE (3);
13491                                 if (ip [2] & 0x1)
13492                                         ins_flag |= MONO_INST_NOTYPECHECK;
13493                                 if (ip [2] & 0x2)
13494                                         ins_flag |= MONO_INST_NORANGECHECK;
13495                                 /* we ignore the no-nullcheck for now since we
13496                                  * really do it explicitly only when doing callvirt->call
13497                                  */
13498                                 ip += 3;
13499                                 break;
13500                         case CEE_RETHROW: {
13501                                 MonoInst *load;
13502                                 int handler_offset = -1;
13503
13504                                 for (i = 0; i < header->num_clauses; ++i) {
13505                                         MonoExceptionClause *clause = &header->clauses [i];
13506                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13507                                                 handler_offset = clause->handler_offset;
13508                                                 break;
13509                                         }
13510                                 }
13511
13512                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13513
13514                                 if (handler_offset == -1)
13515                                         UNVERIFIED;
13516
13517                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13518                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13519                                 ins->sreg1 = load->dreg;
13520                                 MONO_ADD_INS (cfg->cbb, ins);
13521
13522                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13523                                 MONO_ADD_INS (cfg->cbb, ins);
13524
13525                                 sp = stack_start;
13526                                 link_bblock (cfg, cfg->cbb, end_bblock);
13527                                 start_new_bblock = 1;
13528                                 ip += 2;
13529                                 break;
13530                         }
13531                         case CEE_SIZEOF: {
13532                                 guint32 val;
13533                                 int ialign;
13534
13535                                 CHECK_STACK_OVF (1);
13536                                 CHECK_OPSIZE (6);
13537                                 token = read32 (ip + 2);
13538                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13539                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13540                                         CHECK_CFG_ERROR;
13541
13542                                         val = mono_type_size (type, &ialign);
13543                                 } else {
13544                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13545                                         CHECK_TYPELOAD (klass);
13546
13547                                         val = mono_type_size (&klass->byval_arg, &ialign);
13548
13549                                         if (mini_is_gsharedvt_klass (klass))
13550                                                 GSHAREDVT_FAILURE (*ip);
13551                                 }
13552                                 EMIT_NEW_ICONST (cfg, ins, val);
13553                                 *sp++= ins;
13554                                 ip += 6;
13555                                 break;
13556                         }
13557                         case CEE_REFANYTYPE: {
13558                                 MonoInst *src_var, *src;
13559
13560                                 GSHAREDVT_FAILURE (*ip);
13561
13562                                 CHECK_STACK (1);
13563                                 --sp;
13564
13565                                 // FIXME:
13566                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13567                                 if (!src_var)
13568                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13569                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13570                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13571                                 *sp++ = ins;
13572                                 ip += 2;
13573                                 break;
13574                         }
13575                         case CEE_READONLY_:
13576                                 readonly = TRUE;
13577                                 ip += 2;
13578                                 break;
13579
13580                         case CEE_UNUSED56:
13581                         case CEE_UNUSED57:
13582                         case CEE_UNUSED70:
13583                         case CEE_UNUSED:
13584                         case CEE_UNUSED99:
13585                                 UNVERIFIED;
13586
13587                         default:
13588                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13589                                 UNVERIFIED;
13590                         }
13591                         break;
13592                 }
13593                 case CEE_UNUSED58:
13594                 case CEE_UNUSED1:
13595                         UNVERIFIED;
13596
13597                 default:
13598                         g_warning ("opcode 0x%02x not handled", *ip);
13599                         UNVERIFIED;
13600                 }
13601         }
13602         if (start_new_bblock != 1)
13603                 UNVERIFIED;
13604
13605         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13606         if (cfg->cbb->next_bb) {
13607                 /* This could already be set because of inlining, #693905 */
13608                 MonoBasicBlock *bb = cfg->cbb;
13609
13610                 while (bb->next_bb)
13611                         bb = bb->next_bb;
13612                 bb->next_bb = end_bblock;
13613         } else {
13614                 cfg->cbb->next_bb = end_bblock;
13615         }
13616
13617         if (cfg->method == method && cfg->domainvar) {
13618                 MonoInst *store;
13619                 MonoInst *get_domain;
13620
13621                 cfg->cbb = init_localsbb;
13622
13623                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13624                         MONO_ADD_INS (cfg->cbb, get_domain);
13625                 } else {
13626                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13627                 }
13628                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13629                 MONO_ADD_INS (cfg->cbb, store);
13630         }
13631
13632 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13633         if (cfg->compile_aot)
13634                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13635                 mono_get_got_var (cfg);
13636 #endif
13637
13638         if (cfg->method == method && cfg->got_var)
13639                 mono_emit_load_got_addr (cfg);
13640
13641         if (init_localsbb) {
13642                 cfg->cbb = init_localsbb;
13643                 cfg->ip = NULL;
13644                 for (i = 0; i < header->num_locals; ++i) {
13645                         emit_init_local (cfg, i, header->locals [i], init_locals);
13646                 }
13647         }
13648
13649         if (cfg->init_ref_vars && cfg->method == method) {
13650                 /* Emit initialization for ref vars */
13651                 // FIXME: Avoid duplication initialization for IL locals.
13652                 for (i = 0; i < cfg->num_varinfo; ++i) {
13653                         MonoInst *ins = cfg->varinfo [i];
13654
13655                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13656                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13657                 }
13658         }
13659
13660         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13661                 cfg->cbb = init_localsbb;
13662                 emit_push_lmf (cfg);
13663         }
13664
13665         cfg->cbb = init_localsbb;
13666         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13667
13668         if (seq_points) {
13669                 MonoBasicBlock *bb;
13670
13671                 /*
13672                  * Make seq points at backward branch targets interruptable.
13673                  */
13674                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13675                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13676                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13677         }
13678
13679         /* Add a sequence point for method entry/exit events */
13680         if (seq_points && cfg->gen_sdb_seq_points) {
13681                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13682                 MONO_ADD_INS (init_localsbb, ins);
13683                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13684                 MONO_ADD_INS (cfg->bb_exit, ins);
13685         }
13686
13687         /*
13688          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13689          * the code they refer to was dead (#11880).
13690          */
13691         if (sym_seq_points) {
13692                 for (i = 0; i < header->code_size; ++i) {
13693                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13694                                 MonoInst *ins;
13695
13696                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13697                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13698                         }
13699                 }
13700         }
13701
13702         cfg->ip = NULL;
13703
13704         if (cfg->method == method) {
13705                 MonoBasicBlock *bb;
13706                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13707                         if (bb == cfg->bb_init)
13708                                 bb->region = -1;
13709                         else
13710                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
13711                         if (cfg->spvars)
13712                                 mono_create_spvar_for_region (cfg, bb->region);
13713                         if (cfg->verbose_level > 2)
13714                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13715                 }
13716         } else {
13717                 MonoBasicBlock *bb;
13718                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13719                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13720                         bb->real_offset = inline_offset;
13721                 }
13722         }
13723
13724         if (inline_costs < 0) {
13725                 char *mname;
13726
13727                 /* Method is too large */
13728                 mname = mono_method_full_name (method, TRUE);
13729                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13730                 g_free (mname);
13731         }
13732
13733         if ((cfg->verbose_level > 2) && (cfg->method == method))
13734                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13735
13736         goto cleanup;
13737
13738 mono_error_exit:
13739         g_assert (!mono_error_ok (&cfg->error));
13740         goto cleanup;
13741
13742  exception_exit:
13743         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13744         goto cleanup;
13745
13746  unverified:
13747         set_exception_type_from_invalid_il (cfg, method, ip);
13748         goto cleanup;
13749
13750  cleanup:
13751         g_slist_free (class_inits);
13752         mono_basic_block_free (original_bb);
13753         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13754         if (cfg->exception_type)
13755                 return -1;
13756         else
13757                 return inline_costs;
13758 }
13759
13760 static int
13761 store_membase_reg_to_store_membase_imm (int opcode)
13762 {
13763         switch (opcode) {
13764         case OP_STORE_MEMBASE_REG:
13765                 return OP_STORE_MEMBASE_IMM;
13766         case OP_STOREI1_MEMBASE_REG:
13767                 return OP_STOREI1_MEMBASE_IMM;
13768         case OP_STOREI2_MEMBASE_REG:
13769                 return OP_STOREI2_MEMBASE_IMM;
13770         case OP_STOREI4_MEMBASE_REG:
13771                 return OP_STOREI4_MEMBASE_IMM;
13772         case OP_STOREI8_MEMBASE_REG:
13773                 return OP_STOREI8_MEMBASE_IMM;
13774         default:
13775                 g_assert_not_reached ();
13776         }
13777
13778         return -1;
13779 }
13780
13781 int
13782 mono_op_to_op_imm (int opcode)
13783 {
13784         switch (opcode) {
13785         case OP_IADD:
13786                 return OP_IADD_IMM;
13787         case OP_ISUB:
13788                 return OP_ISUB_IMM;
13789         case OP_IDIV:
13790                 return OP_IDIV_IMM;
13791         case OP_IDIV_UN:
13792                 return OP_IDIV_UN_IMM;
13793         case OP_IREM:
13794                 return OP_IREM_IMM;
13795         case OP_IREM_UN:
13796                 return OP_IREM_UN_IMM;
13797         case OP_IMUL:
13798                 return OP_IMUL_IMM;
13799         case OP_IAND:
13800                 return OP_IAND_IMM;
13801         case OP_IOR:
13802                 return OP_IOR_IMM;
13803         case OP_IXOR:
13804                 return OP_IXOR_IMM;
13805         case OP_ISHL:
13806                 return OP_ISHL_IMM;
13807         case OP_ISHR:
13808                 return OP_ISHR_IMM;
13809         case OP_ISHR_UN:
13810                 return OP_ISHR_UN_IMM;
13811
13812         case OP_LADD:
13813                 return OP_LADD_IMM;
13814         case OP_LSUB:
13815                 return OP_LSUB_IMM;
13816         case OP_LAND:
13817                 return OP_LAND_IMM;
13818         case OP_LOR:
13819                 return OP_LOR_IMM;
13820         case OP_LXOR:
13821                 return OP_LXOR_IMM;
13822         case OP_LSHL:
13823                 return OP_LSHL_IMM;
13824         case OP_LSHR:
13825                 return OP_LSHR_IMM;
13826         case OP_LSHR_UN:
13827                 return OP_LSHR_UN_IMM;
13828 #if SIZEOF_REGISTER == 8
13829         case OP_LREM:
13830                 return OP_LREM_IMM;
13831 #endif
13832
13833         case OP_COMPARE:
13834                 return OP_COMPARE_IMM;
13835         case OP_ICOMPARE:
13836                 return OP_ICOMPARE_IMM;
13837         case OP_LCOMPARE:
13838                 return OP_LCOMPARE_IMM;
13839
13840         case OP_STORE_MEMBASE_REG:
13841                 return OP_STORE_MEMBASE_IMM;
13842         case OP_STOREI1_MEMBASE_REG:
13843                 return OP_STOREI1_MEMBASE_IMM;
13844         case OP_STOREI2_MEMBASE_REG:
13845                 return OP_STOREI2_MEMBASE_IMM;
13846         case OP_STOREI4_MEMBASE_REG:
13847                 return OP_STOREI4_MEMBASE_IMM;
13848
13849 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13850         case OP_X86_PUSH:
13851                 return OP_X86_PUSH_IMM;
13852         case OP_X86_COMPARE_MEMBASE_REG:
13853                 return OP_X86_COMPARE_MEMBASE_IMM;
13854 #endif
13855 #if defined(TARGET_AMD64)
13856         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13857                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13858 #endif
13859         case OP_VOIDCALL_REG:
13860                 return OP_VOIDCALL;
13861         case OP_CALL_REG:
13862                 return OP_CALL;
13863         case OP_LCALL_REG:
13864                 return OP_LCALL;
13865         case OP_FCALL_REG:
13866                 return OP_FCALL;
13867         case OP_LOCALLOC:
13868                 return OP_LOCALLOC_IMM;
13869         }
13870
13871         return -1;
13872 }
13873
13874 static int
13875 ldind_to_load_membase (int opcode)
13876 {
13877         switch (opcode) {
13878         case CEE_LDIND_I1:
13879                 return OP_LOADI1_MEMBASE;
13880         case CEE_LDIND_U1:
13881                 return OP_LOADU1_MEMBASE;
13882         case CEE_LDIND_I2:
13883                 return OP_LOADI2_MEMBASE;
13884         case CEE_LDIND_U2:
13885                 return OP_LOADU2_MEMBASE;
13886         case CEE_LDIND_I4:
13887                 return OP_LOADI4_MEMBASE;
13888         case CEE_LDIND_U4:
13889                 return OP_LOADU4_MEMBASE;
13890         case CEE_LDIND_I:
13891                 return OP_LOAD_MEMBASE;
13892         case CEE_LDIND_REF:
13893                 return OP_LOAD_MEMBASE;
13894         case CEE_LDIND_I8:
13895                 return OP_LOADI8_MEMBASE;
13896         case CEE_LDIND_R4:
13897                 return OP_LOADR4_MEMBASE;
13898         case CEE_LDIND_R8:
13899                 return OP_LOADR8_MEMBASE;
13900         default:
13901                 g_assert_not_reached ();
13902         }
13903
13904         return -1;
13905 }
13906
13907 static int
13908 stind_to_store_membase (int opcode)
13909 {
13910         switch (opcode) {
13911         case CEE_STIND_I1:
13912                 return OP_STOREI1_MEMBASE_REG;
13913         case CEE_STIND_I2:
13914                 return OP_STOREI2_MEMBASE_REG;
13915         case CEE_STIND_I4:
13916                 return OP_STOREI4_MEMBASE_REG;
13917         case CEE_STIND_I:
13918         case CEE_STIND_REF:
13919                 return OP_STORE_MEMBASE_REG;
13920         case CEE_STIND_I8:
13921                 return OP_STOREI8_MEMBASE_REG;
13922         case CEE_STIND_R4:
13923                 return OP_STORER4_MEMBASE_REG;
13924         case CEE_STIND_R8:
13925                 return OP_STORER8_MEMBASE_REG;
13926         default:
13927                 g_assert_not_reached ();
13928         }
13929
13930         return -1;
13931 }
13932
13933 int
13934 mono_load_membase_to_load_mem (int opcode)
13935 {
13936         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13937 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13938         switch (opcode) {
13939         case OP_LOAD_MEMBASE:
13940                 return OP_LOAD_MEM;
13941         case OP_LOADU1_MEMBASE:
13942                 return OP_LOADU1_MEM;
13943         case OP_LOADU2_MEMBASE:
13944                 return OP_LOADU2_MEM;
13945         case OP_LOADI4_MEMBASE:
13946                 return OP_LOADI4_MEM;
13947         case OP_LOADU4_MEMBASE:
13948                 return OP_LOADU4_MEM;
13949 #if SIZEOF_REGISTER == 8
13950         case OP_LOADI8_MEMBASE:
13951                 return OP_LOADI8_MEM;
13952 #endif
13953         }
13954 #endif
13955
13956         return -1;
13957 }
13958
13959 static inline int
13960 op_to_op_dest_membase (int store_opcode, int opcode)
13961 {
13962 #if defined(TARGET_X86)
13963         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13964                 return -1;
13965
13966         switch (opcode) {
13967         case OP_IADD:
13968                 return OP_X86_ADD_MEMBASE_REG;
13969         case OP_ISUB:
13970                 return OP_X86_SUB_MEMBASE_REG;
13971         case OP_IAND:
13972                 return OP_X86_AND_MEMBASE_REG;
13973         case OP_IOR:
13974                 return OP_X86_OR_MEMBASE_REG;
13975         case OP_IXOR:
13976                 return OP_X86_XOR_MEMBASE_REG;
13977         case OP_ADD_IMM:
13978         case OP_IADD_IMM:
13979                 return OP_X86_ADD_MEMBASE_IMM;
13980         case OP_SUB_IMM:
13981         case OP_ISUB_IMM:
13982                 return OP_X86_SUB_MEMBASE_IMM;
13983         case OP_AND_IMM:
13984         case OP_IAND_IMM:
13985                 return OP_X86_AND_MEMBASE_IMM;
13986         case OP_OR_IMM:
13987         case OP_IOR_IMM:
13988                 return OP_X86_OR_MEMBASE_IMM;
13989         case OP_XOR_IMM:
13990         case OP_IXOR_IMM:
13991                 return OP_X86_XOR_MEMBASE_IMM;
13992         case OP_MOVE:
13993                 return OP_NOP;
13994         }
13995 #endif
13996
13997 #if defined(TARGET_AMD64)
13998         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13999                 return -1;
14000
14001         switch (opcode) {
14002         case OP_IADD:
14003                 return OP_X86_ADD_MEMBASE_REG;
14004         case OP_ISUB:
14005                 return OP_X86_SUB_MEMBASE_REG;
14006         case OP_IAND:
14007                 return OP_X86_AND_MEMBASE_REG;
14008         case OP_IOR:
14009                 return OP_X86_OR_MEMBASE_REG;
14010         case OP_IXOR:
14011                 return OP_X86_XOR_MEMBASE_REG;
14012         case OP_IADD_IMM:
14013                 return OP_X86_ADD_MEMBASE_IMM;
14014         case OP_ISUB_IMM:
14015                 return OP_X86_SUB_MEMBASE_IMM;
14016         case OP_IAND_IMM:
14017                 return OP_X86_AND_MEMBASE_IMM;
14018         case OP_IOR_IMM:
14019                 return OP_X86_OR_MEMBASE_IMM;
14020         case OP_IXOR_IMM:
14021                 return OP_X86_XOR_MEMBASE_IMM;
14022         case OP_LADD:
14023                 return OP_AMD64_ADD_MEMBASE_REG;
14024         case OP_LSUB:
14025                 return OP_AMD64_SUB_MEMBASE_REG;
14026         case OP_LAND:
14027                 return OP_AMD64_AND_MEMBASE_REG;
14028         case OP_LOR:
14029                 return OP_AMD64_OR_MEMBASE_REG;
14030         case OP_LXOR:
14031                 return OP_AMD64_XOR_MEMBASE_REG;
14032         case OP_ADD_IMM:
14033         case OP_LADD_IMM:
14034                 return OP_AMD64_ADD_MEMBASE_IMM;
14035         case OP_SUB_IMM:
14036         case OP_LSUB_IMM:
14037                 return OP_AMD64_SUB_MEMBASE_IMM;
14038         case OP_AND_IMM:
14039         case OP_LAND_IMM:
14040                 return OP_AMD64_AND_MEMBASE_IMM;
14041         case OP_OR_IMM:
14042         case OP_LOR_IMM:
14043                 return OP_AMD64_OR_MEMBASE_IMM;
14044         case OP_XOR_IMM:
14045         case OP_LXOR_IMM:
14046                 return OP_AMD64_XOR_MEMBASE_IMM;
14047         case OP_MOVE:
14048                 return OP_NOP;
14049         }
14050 #endif
14051
14052         return -1;
14053 }
14054
14055 static inline int
14056 op_to_op_store_membase (int store_opcode, int opcode)
14057 {
14058 #if defined(TARGET_X86) || defined(TARGET_AMD64)
14059         switch (opcode) {
14060         case OP_ICEQ:
14061                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14062                         return OP_X86_SETEQ_MEMBASE;
14063         case OP_CNE:
14064                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14065                         return OP_X86_SETNE_MEMBASE;
14066         }
14067 #endif
14068
14069         return -1;
14070 }
14071
14072 static inline int
14073 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14074 {
14075 #ifdef TARGET_X86
14076         /* FIXME: This has sign extension issues */
14077         /*
14078         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14079                 return OP_X86_COMPARE_MEMBASE8_IMM;
14080         */
14081
14082         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14083                 return -1;
14084
14085         switch (opcode) {
14086         case OP_X86_PUSH:
14087                 return OP_X86_PUSH_MEMBASE;
14088         case OP_COMPARE_IMM:
14089         case OP_ICOMPARE_IMM:
14090                 return OP_X86_COMPARE_MEMBASE_IMM;
14091         case OP_COMPARE:
14092         case OP_ICOMPARE:
14093                 return OP_X86_COMPARE_MEMBASE_REG;
14094         }
14095 #endif
14096
14097 #ifdef TARGET_AMD64
14098         /* FIXME: This has sign extension issues */
14099         /*
14100         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14101                 return OP_X86_COMPARE_MEMBASE8_IMM;
14102         */
14103
14104         switch (opcode) {
14105         case OP_X86_PUSH:
14106                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14107                         return OP_X86_PUSH_MEMBASE;
14108                 break;
14109                 /* FIXME: This only works for 32 bit immediates
14110         case OP_COMPARE_IMM:
14111         case OP_LCOMPARE_IMM:
14112                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14113                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14114                 */
14115         case OP_ICOMPARE_IMM:
14116                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14117                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14118                 break;
14119         case OP_COMPARE:
14120         case OP_LCOMPARE:
14121                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14122                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14123                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14124                         return OP_AMD64_COMPARE_MEMBASE_REG;
14125                 break;
14126         case OP_ICOMPARE:
14127                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14128                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14129                 break;
14130         }
14131 #endif
14132
14133         return -1;
14134 }
14135
14136 static inline int
14137 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14138 {
14139 #ifdef TARGET_X86
14140         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14141                 return -1;
14142
14143         switch (opcode) {
14144         case OP_COMPARE:
14145         case OP_ICOMPARE:
14146                 return OP_X86_COMPARE_REG_MEMBASE;
14147         case OP_IADD:
14148                 return OP_X86_ADD_REG_MEMBASE;
14149         case OP_ISUB:
14150                 return OP_X86_SUB_REG_MEMBASE;
14151         case OP_IAND:
14152                 return OP_X86_AND_REG_MEMBASE;
14153         case OP_IOR:
14154                 return OP_X86_OR_REG_MEMBASE;
14155         case OP_IXOR:
14156                 return OP_X86_XOR_REG_MEMBASE;
14157         }
14158 #endif
14159
14160 #ifdef TARGET_AMD64
14161         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14162                 switch (opcode) {
14163                 case OP_ICOMPARE:
14164                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14165                 case OP_IADD:
14166                         return OP_X86_ADD_REG_MEMBASE;
14167                 case OP_ISUB:
14168                         return OP_X86_SUB_REG_MEMBASE;
14169                 case OP_IAND:
14170                         return OP_X86_AND_REG_MEMBASE;
14171                 case OP_IOR:
14172                         return OP_X86_OR_REG_MEMBASE;
14173                 case OP_IXOR:
14174                         return OP_X86_XOR_REG_MEMBASE;
14175                 }
14176         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14177                 switch (opcode) {
14178                 case OP_COMPARE:
14179                 case OP_LCOMPARE:
14180                         return OP_AMD64_COMPARE_REG_MEMBASE;
14181                 case OP_LADD:
14182                         return OP_AMD64_ADD_REG_MEMBASE;
14183                 case OP_LSUB:
14184                         return OP_AMD64_SUB_REG_MEMBASE;
14185                 case OP_LAND:
14186                         return OP_AMD64_AND_REG_MEMBASE;
14187                 case OP_LOR:
14188                         return OP_AMD64_OR_REG_MEMBASE;
14189                 case OP_LXOR:
14190                         return OP_AMD64_XOR_REG_MEMBASE;
14191                 }
14192         }
14193 #endif
14194
14195         return -1;
14196 }
14197
14198 int
14199 mono_op_to_op_imm_noemul (int opcode)
14200 {
14201         switch (opcode) {
14202 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14203         case OP_LSHR:
14204         case OP_LSHL:
14205         case OP_LSHR_UN:
14206                 return -1;
14207 #endif
14208 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14209         case OP_IDIV:
14210         case OP_IDIV_UN:
14211         case OP_IREM:
14212         case OP_IREM_UN:
14213                 return -1;
14214 #endif
14215 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14216         case OP_IMUL:
14217                 return -1;
14218 #endif
14219         default:
14220                 return mono_op_to_op_imm (opcode);
14221         }
14222 }
14223
14224 /**
14225  * mono_handle_global_vregs:
14226  *
14227  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14228  * for them.
14229  */
14230 void
14231 mono_handle_global_vregs (MonoCompile *cfg)
14232 {
14233         gint32 *vreg_to_bb;
14234         MonoBasicBlock *bb;
14235         int i, pos;
14236
14237         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14238
14239 #ifdef MONO_ARCH_SIMD_INTRINSICS
14240         if (cfg->uses_simd_intrinsics)
14241                 mono_simd_simplify_indirection (cfg);
14242 #endif
14243
14244         /* Find local vregs used in more than one bb */
14245         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14246                 MonoInst *ins = bb->code;
14247                 int block_num = bb->block_num;
14248
14249                 if (cfg->verbose_level > 2)
14250                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14251
14252                 cfg->cbb = bb;
14253                 for (; ins; ins = ins->next) {
14254                         const char *spec = INS_INFO (ins->opcode);
14255                         int regtype = 0, regindex;
14256                         gint32 prev_bb;
14257
14258                         if (G_UNLIKELY (cfg->verbose_level > 2))
14259                                 mono_print_ins (ins);
14260
14261                         g_assert (ins->opcode >= MONO_CEE_LAST);
14262
14263                         for (regindex = 0; regindex < 4; regindex ++) {
14264                                 int vreg = 0;
14265
14266                                 if (regindex == 0) {
14267                                         regtype = spec [MONO_INST_DEST];
14268                                         if (regtype == ' ')
14269                                                 continue;
14270                                         vreg = ins->dreg;
14271                                 } else if (regindex == 1) {
14272                                         regtype = spec [MONO_INST_SRC1];
14273                                         if (regtype == ' ')
14274                                                 continue;
14275                                         vreg = ins->sreg1;
14276                                 } else if (regindex == 2) {
14277                                         regtype = spec [MONO_INST_SRC2];
14278                                         if (regtype == ' ')
14279                                                 continue;
14280                                         vreg = ins->sreg2;
14281                                 } else if (regindex == 3) {
14282                                         regtype = spec [MONO_INST_SRC3];
14283                                         if (regtype == ' ')
14284                                                 continue;
14285                                         vreg = ins->sreg3;
14286                                 }
14287
14288 #if SIZEOF_REGISTER == 4
14289                                 /* In the LLVM case, the long opcodes are not decomposed */
14290                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14291                                         /*
14292                                          * Since some instructions reference the original long vreg,
14293                                          * and some reference the two component vregs, it is quite hard
14294                                          * to determine when it needs to be global. So be conservative.
14295                                          */
14296                                         if (!get_vreg_to_inst (cfg, vreg)) {
14297                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14298
14299                                                 if (cfg->verbose_level > 2)
14300                                                         printf ("LONG VREG R%d made global.\n", vreg);
14301                                         }
14302
14303                                         /*
14304                                          * Make the component vregs volatile since the optimizations can
14305                                          * get confused otherwise.
14306                                          */
14307                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14308                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14309                                 }
14310 #endif
14311
14312                                 g_assert (vreg != -1);
14313
14314                                 prev_bb = vreg_to_bb [vreg];
14315                                 if (prev_bb == 0) {
14316                                         /* 0 is a valid block num */
14317                                         vreg_to_bb [vreg] = block_num + 1;
14318                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14319                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14320                                                 continue;
14321
14322                                         if (!get_vreg_to_inst (cfg, vreg)) {
14323                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14324                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14325
14326                                                 switch (regtype) {
14327                                                 case 'i':
14328                                                         if (vreg_is_ref (cfg, vreg))
14329                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14330                                                         else
14331                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14332                                                         break;
14333                                                 case 'l':
14334                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14335                                                         break;
14336                                                 case 'f':
14337                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14338                                                         break;
14339                                                 case 'v':
14340                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14341                                                         break;
14342                                                 default:
14343                                                         g_assert_not_reached ();
14344                                                 }
14345                                         }
14346
14347                                         /* Flag as having been used in more than one bb */
14348                                         vreg_to_bb [vreg] = -1;
14349                                 }
14350                         }
14351                 }
14352         }
14353
14354         /* If a variable is used in only one bblock, convert it into a local vreg */
14355         for (i = 0; i < cfg->num_varinfo; i++) {
14356                 MonoInst *var = cfg->varinfo [i];
14357                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14358
14359                 switch (var->type) {
14360                 case STACK_I4:
14361                 case STACK_OBJ:
14362                 case STACK_PTR:
14363                 case STACK_MP:
14364                 case STACK_VTYPE:
14365 #if SIZEOF_REGISTER == 8
14366                 case STACK_I8:
14367 #endif
14368 #if !defined(TARGET_X86)
14369                 /* Enabling this screws up the fp stack on x86 */
14370                 case STACK_R8:
14371 #endif
14372                         if (mono_arch_is_soft_float ())
14373                                 break;
14374
14375                         /*
14376                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14377                                 break;
14378                         */
14379
14380                         /* Arguments are implicitly global */
14381                         /* Putting R4 vars into registers doesn't work currently */
14382                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14383                         if ((var->opcode != OP_ARG) && (var != cfg->ret) && !(var->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && (vreg_to_bb [var->dreg] != -1) && (var->klass->byval_arg.type != MONO_TYPE_R4) && !cfg->disable_vreg_to_lvreg && var != cfg->gsharedvt_info_var && var != cfg->gsharedvt_locals_var && var != cfg->lmf_addr_var) {
14384                                 /*
14385                                  * Make that the variable's liveness interval doesn't contain a call, since
14386                                  * that would cause the lvreg to be spilled, making the whole optimization
14387                                  * useless.
14388                                  */
14389                                 /* This is too slow for JIT compilation */
14390 #if 0
14391                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14392                                         MonoInst *ins;
14393                                         int def_index, call_index, ins_index;
14394                                         gboolean spilled = FALSE;
14395
14396                                         def_index = -1;
14397                                         call_index = -1;
14398                                         ins_index = 0;
14399                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14400                                                 const char *spec = INS_INFO (ins->opcode);
14401
14402                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14403                                                         def_index = ins_index;
14404
14405                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14406                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14407                                                         if (call_index > def_index) {
14408                                                                 spilled = TRUE;
14409                                                                 break;
14410                                                         }
14411                                                 }
14412
14413                                                 if (MONO_IS_CALL (ins))
14414                                                         call_index = ins_index;
14415
14416                                                 ins_index ++;
14417                                         }
14418
14419                                         if (spilled)
14420                                                 break;
14421                                 }
14422 #endif
14423
14424                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14425                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14426                                 var->flags |= MONO_INST_IS_DEAD;
14427                                 cfg->vreg_to_inst [var->dreg] = NULL;
14428                         }
14429                         break;
14430                 }
14431         }
14432
14433         /*
14434          * Compress the varinfo and vars tables so the liveness computation is faster and
14435          * takes up less space.
14436          */
14437         pos = 0;
14438         for (i = 0; i < cfg->num_varinfo; ++i) {
14439                 MonoInst *var = cfg->varinfo [i];
14440                 if (pos < i && cfg->locals_start == i)
14441                         cfg->locals_start = pos;
14442                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14443                         if (pos < i) {
14444                                 cfg->varinfo [pos] = cfg->varinfo [i];
14445                                 cfg->varinfo [pos]->inst_c0 = pos;
14446                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14447                                 cfg->vars [pos].idx = pos;
14448 #if SIZEOF_REGISTER == 4
14449                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14450                                         /* Modify the two component vars too */
14451                                         MonoInst *var1;
14452
14453                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14454                                         var1->inst_c0 = pos;
14455                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14456                                         var1->inst_c0 = pos;
14457                                 }
14458 #endif
14459                         }
14460                         pos ++;
14461                 }
14462         }
14463         cfg->num_varinfo = pos;
14464         if (cfg->locals_start > cfg->num_varinfo)
14465                 cfg->locals_start = cfg->num_varinfo;
14466 }
14467
14468 /*
14469  * mono_allocate_gsharedvt_vars:
14470  *
14471  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14472  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14473  */
14474 void
14475 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14476 {
14477         int i;
14478
14479         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14480
14481         for (i = 0; i < cfg->num_varinfo; ++i) {
14482                 MonoInst *ins = cfg->varinfo [i];
14483                 int idx;
14484
14485                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14486                         if (i >= cfg->locals_start) {
14487                                 /* Local */
14488                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14489                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14490                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14491                                 ins->inst_imm = idx;
14492                         } else {
14493                                 /* Arg */
14494                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14495                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14496                         }
14497                 }
14498         }
14499 }
14500
14501 /**
14502  * mono_spill_global_vars:
14503  *
14504  *   Generate spill code for variables which are not allocated to registers,
14505  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14506  * code is generated which could be optimized by the local optimization passes.
14507  */
14508 void
14509 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14510 {
14511         MonoBasicBlock *bb;
14512         char spec2 [16];
14513         int orig_next_vreg;
14514         guint32 *vreg_to_lvreg;
14515         guint32 *lvregs;
14516         guint32 i, lvregs_len;
14517         gboolean dest_has_lvreg = FALSE;
14518         MonoStackType stacktypes [128];
14519         MonoInst **live_range_start, **live_range_end;
14520         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14521
14522         *need_local_opts = FALSE;
14523
14524         memset (spec2, 0, sizeof (spec2));
14525
14526         /* FIXME: Move this function to mini.c */
14527         stacktypes ['i'] = STACK_PTR;
14528         stacktypes ['l'] = STACK_I8;
14529         stacktypes ['f'] = STACK_R8;
14530 #ifdef MONO_ARCH_SIMD_INTRINSICS
14531         stacktypes ['x'] = STACK_VTYPE;
14532 #endif
14533
14534 #if SIZEOF_REGISTER == 4
14535         /* Create MonoInsts for longs */
14536         for (i = 0; i < cfg->num_varinfo; i++) {
14537                 MonoInst *ins = cfg->varinfo [i];
14538
14539                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14540                         switch (ins->type) {
14541                         case STACK_R8:
14542                         case STACK_I8: {
14543                                 MonoInst *tree;
14544
14545                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14546                                         break;
14547
14548                                 g_assert (ins->opcode == OP_REGOFFSET);
14549
14550                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14551                                 g_assert (tree);
14552                                 tree->opcode = OP_REGOFFSET;
14553                                 tree->inst_basereg = ins->inst_basereg;
14554                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14555
14556                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14557                                 g_assert (tree);
14558                                 tree->opcode = OP_REGOFFSET;
14559                                 tree->inst_basereg = ins->inst_basereg;
14560                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14561                                 break;
14562                         }
14563                         default:
14564                                 break;
14565                         }
14566                 }
14567         }
14568 #endif
14569
14570         if (cfg->compute_gc_maps) {
14571                 /* registers need liveness info even for !non refs */
14572                 for (i = 0; i < cfg->num_varinfo; i++) {
14573                         MonoInst *ins = cfg->varinfo [i];
14574
14575                         if (ins->opcode == OP_REGVAR)
14576                                 ins->flags |= MONO_INST_GC_TRACK;
14577                 }
14578         }
14579
14580         /* FIXME: widening and truncation */
14581
14582         /*
14583          * As an optimization, when a variable allocated to the stack is first loaded into
14584          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14585          * the variable again.
14586          */
14587         orig_next_vreg = cfg->next_vreg;
14588         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14589         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14590         lvregs_len = 0;
14591
14592         /*
14593          * These arrays contain the first and last instructions accessing a given
14594          * variable.
14595          * Since we emit bblocks in the same order we process them here, and we
14596          * don't split live ranges, these will precisely describe the live range of
14597          * the variable, i.e. the instruction range where a valid value can be found
14598          * in the variables location.
14599          * The live range is computed using the liveness info computed by the liveness pass.
14600          * We can't use vmv->range, since that is an abstract live range, and we need
14601          * one which is instruction precise.
14602          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14603          */
14604         /* FIXME: Only do this if debugging info is requested */
14605         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14606         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14607         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14608         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14609
14610         /* Add spill loads/stores */
14611         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14612                 MonoInst *ins;
14613
14614                 if (cfg->verbose_level > 2)
14615                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14616
14617                 /* Clear vreg_to_lvreg array */
14618                 for (i = 0; i < lvregs_len; i++)
14619                         vreg_to_lvreg [lvregs [i]] = 0;
14620                 lvregs_len = 0;
14621
14622                 cfg->cbb = bb;
14623                 MONO_BB_FOR_EACH_INS (bb, ins) {
14624                         const char *spec = INS_INFO (ins->opcode);
14625                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14626                         gboolean store, no_lvreg;
14627                         int sregs [MONO_MAX_SRC_REGS];
14628
14629                         if (G_UNLIKELY (cfg->verbose_level > 2))
14630                                 mono_print_ins (ins);
14631
14632                         if (ins->opcode == OP_NOP)
14633                                 continue;
14634
14635                         /*
14636                          * We handle LDADDR here as well, since it can only be decomposed
14637                          * when variable addresses are known.
14638                          */
14639                         if (ins->opcode == OP_LDADDR) {
14640                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14641
14642                                 if (var->opcode == OP_VTARG_ADDR) {
14643                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14644                                         MonoInst *vtaddr = var->inst_left;
14645                                         if (vtaddr->opcode == OP_REGVAR) {
14646                                                 ins->opcode = OP_MOVE;
14647                                                 ins->sreg1 = vtaddr->dreg;
14648                                         }
14649                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14650                                                 ins->opcode = OP_LOAD_MEMBASE;
14651                                                 ins->inst_basereg = vtaddr->inst_basereg;
14652                                                 ins->inst_offset = vtaddr->inst_offset;
14653                                         } else
14654                                                 NOT_IMPLEMENTED;
14655                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14656                                         /* gsharedvt arg passed by ref */
14657                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14658
14659                                         ins->opcode = OP_LOAD_MEMBASE;
14660                                         ins->inst_basereg = var->inst_basereg;
14661                                         ins->inst_offset = var->inst_offset;
14662                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14663                                         MonoInst *load, *load2, *load3;
14664                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14665                                         int reg1, reg2, reg3;
14666                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14667                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14668
14669                                         /*
14670                                          * gsharedvt local.
14671                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14672                                          */
14673
14674                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14675
14676                                         g_assert (info_var);
14677                                         g_assert (locals_var);
14678
14679                                         /* Mark the instruction used to compute the locals var as used */
14680                                         cfg->gsharedvt_locals_var_ins = NULL;
14681
14682                                         /* Load the offset */
14683                                         if (info_var->opcode == OP_REGOFFSET) {
14684                                                 reg1 = alloc_ireg (cfg);
14685                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14686                                         } else if (info_var->opcode == OP_REGVAR) {
14687                                                 load = NULL;
14688                                                 reg1 = info_var->dreg;
14689                                         } else {
14690                                                 g_assert_not_reached ();
14691                                         }
14692                                         reg2 = alloc_ireg (cfg);
14693                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14694                                         /* Load the locals area address */
14695                                         reg3 = alloc_ireg (cfg);
14696                                         if (locals_var->opcode == OP_REGOFFSET) {
14697                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14698                                         } else if (locals_var->opcode == OP_REGVAR) {
14699                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14700                                         } else {
14701                                                 g_assert_not_reached ();
14702                                         }
14703                                         /* Compute the address */
14704                                         ins->opcode = OP_PADD;
14705                                         ins->sreg1 = reg3;
14706                                         ins->sreg2 = reg2;
14707
14708                                         mono_bblock_insert_before_ins (bb, ins, load3);
14709                                         mono_bblock_insert_before_ins (bb, load3, load2);
14710                                         if (load)
14711                                                 mono_bblock_insert_before_ins (bb, load2, load);
14712                                 } else {
14713                                         g_assert (var->opcode == OP_REGOFFSET);
14714
14715                                         ins->opcode = OP_ADD_IMM;
14716                                         ins->sreg1 = var->inst_basereg;
14717                                         ins->inst_imm = var->inst_offset;
14718                                 }
14719
14720                                 *need_local_opts = TRUE;
14721                                 spec = INS_INFO (ins->opcode);
14722                         }
14723
14724                         if (ins->opcode < MONO_CEE_LAST) {
14725                                 mono_print_ins (ins);
14726                                 g_assert_not_reached ();
14727                         }
14728
14729                         /*
14730                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14731                          * src register.
14732                          * FIXME:
14733                          */
14734                         if (MONO_IS_STORE_MEMBASE (ins)) {
14735                                 tmp_reg = ins->dreg;
14736                                 ins->dreg = ins->sreg2;
14737                                 ins->sreg2 = tmp_reg;
14738                                 store = TRUE;
14739
14740                                 spec2 [MONO_INST_DEST] = ' ';
14741                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14742                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14743                                 spec2 [MONO_INST_SRC3] = ' ';
14744                                 spec = spec2;
14745                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14746                                 g_assert_not_reached ();
14747                         else
14748                                 store = FALSE;
14749                         no_lvreg = FALSE;
14750
14751                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14752                                 printf ("\t %.3s %d", spec, ins->dreg);
14753                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14754                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14755                                         printf (" %d", sregs [srcindex]);
14756                                 printf ("\n");
14757                         }
14758
14759                         /***************/
14760                         /*    DREG     */
14761                         /***************/
14762                         regtype = spec [MONO_INST_DEST];
14763                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14764                         prev_dreg = -1;
14765
14766                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14767                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14768                                 MonoInst *store_ins;
14769                                 int store_opcode;
14770                                 MonoInst *def_ins = ins;
14771                                 int dreg = ins->dreg; /* The original vreg */
14772
14773                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14774
14775                                 if (var->opcode == OP_REGVAR) {
14776                                         ins->dreg = var->dreg;
14777                                 } else if ((ins->dreg == ins->sreg1) && (spec [MONO_INST_DEST] == 'i') && (spec [MONO_INST_SRC1] == 'i') && !vreg_to_lvreg [ins->dreg] && (op_to_op_dest_membase (store_opcode, ins->opcode) != -1)) {
14778                                         /*
14779                                          * Instead of emitting a load+store, use a _membase opcode.
14780                                          */
14781                                         g_assert (var->opcode == OP_REGOFFSET);
14782                                         if (ins->opcode == OP_MOVE) {
14783                                                 NULLIFY_INS (ins);
14784                                                 def_ins = NULL;
14785                                         } else {
14786                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14787                                                 ins->inst_basereg = var->inst_basereg;
14788                                                 ins->inst_offset = var->inst_offset;
14789                                                 ins->dreg = -1;
14790                                         }
14791                                         spec = INS_INFO (ins->opcode);
14792                                 } else {
14793                                         guint32 lvreg;
14794
14795                                         g_assert (var->opcode == OP_REGOFFSET);
14796
14797                                         prev_dreg = ins->dreg;
14798
14799                                         /* Invalidate any previous lvreg for this vreg */
14800                                         vreg_to_lvreg [ins->dreg] = 0;
14801
14802                                         lvreg = 0;
14803
14804                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14805                                                 regtype = 'l';
14806                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14807                                         }
14808
14809                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14810
14811 #if SIZEOF_REGISTER != 8
14812                                         if (regtype == 'l') {
14813                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, MONO_LVREG_LS (ins->dreg));
14814                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14815                                                 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, MONO_LVREG_MS (ins->dreg));
14816                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14817                                                 def_ins = store_ins;
14818                                         }
14819                                         else
14820 #endif
14821                                         {
14822                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14823
14824                                                 /* Try to fuse the store into the instruction itself */
14825                                                 /* FIXME: Add more instructions */
14826                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14827                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14828                                                         ins->inst_imm = ins->inst_c0;
14829                                                         ins->inst_destbasereg = var->inst_basereg;
14830                                                         ins->inst_offset = var->inst_offset;
14831                                                         spec = INS_INFO (ins->opcode);
14832                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14833                                                         ins->opcode = store_opcode;
14834                                                         ins->inst_destbasereg = var->inst_basereg;
14835                                                         ins->inst_offset = var->inst_offset;
14836
14837                                                         no_lvreg = TRUE;
14838
14839                                                         tmp_reg = ins->dreg;
14840                                                         ins->dreg = ins->sreg2;
14841                                                         ins->sreg2 = tmp_reg;
14842                                                         store = TRUE;
14843
14844                                                         spec2 [MONO_INST_DEST] = ' ';
14845                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14846                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14847                                                         spec2 [MONO_INST_SRC3] = ' ';
14848                                                         spec = spec2;
14849                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14850                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14851                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14852                                                         ins->dreg = -1;
14853                                                         ins->inst_basereg = var->inst_basereg;
14854                                                         ins->inst_offset = var->inst_offset;
14855                                                         spec = INS_INFO (ins->opcode);
14856                                                 } else {
14857                                                         /* printf ("INS: "); mono_print_ins (ins); */
14858                                                         /* Create a store instruction */
14859                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14860
14861                                                         /* Insert it after the instruction */
14862                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14863
14864                                                         def_ins = store_ins;
14865
14866                                                         /*
14867                                                          * We can't assign ins->dreg to var->dreg here, since the
14868                                                          * sregs could use it. So set a flag, and do it after
14869                                                          * the sregs.
14870                                                          */
14871                                                         if ((!cfg->backend->use_fpstack || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
14872                                                                 dest_has_lvreg = TRUE;
14873                                                 }
14874                                         }
14875                                 }
14876
14877                                 if (def_ins && !live_range_start [dreg]) {
14878                                         live_range_start [dreg] = def_ins;
14879                                         live_range_start_bb [dreg] = bb;
14880                                 }
14881
14882                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14883                                         MonoInst *tmp;
14884
14885                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14886                                         tmp->inst_c1 = dreg;
14887                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14888                                 }
14889                         }
14890
14891                         /************/
14892                         /*  SREGS   */
14893                         /************/
14894                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14895                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14896                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14897                                 sreg = sregs [srcindex];
14898
14899                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14900                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14901                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14902                                         MonoInst *use_ins = ins;
14903                                         MonoInst *load_ins;
14904                                         guint32 load_opcode;
14905
14906                                         if (var->opcode == OP_REGVAR) {
14907                                                 sregs [srcindex] = var->dreg;
14908                                                 //mono_inst_set_src_registers (ins, sregs);
14909                                                 live_range_end [sreg] = use_ins;
14910                                                 live_range_end_bb [sreg] = bb;
14911
14912                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14913                                                         MonoInst *tmp;
14914
14915                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14916                                                         /* var->dreg is a hreg */
14917                                                         tmp->inst_c1 = sreg;
14918                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14919                                                 }
14920
14921                                                 continue;
14922                                         }
14923
14924                                         g_assert (var->opcode == OP_REGOFFSET);
14925
14926                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14927
14928                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14929
14930                                         if (vreg_to_lvreg [sreg]) {
14931                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14932
14933                                                 /* The variable is already loaded to an lvreg */
14934                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14935                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14936                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14937                                                 //mono_inst_set_src_registers (ins, sregs);
14938                                                 continue;
14939                                         }
14940
14941                                         /* Try to fuse the load into the instruction */
14942                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14943                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14944                                                 sregs [0] = var->inst_basereg;
14945                                                 //mono_inst_set_src_registers (ins, sregs);
14946                                                 ins->inst_offset = var->inst_offset;
14947                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14948                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14949                                                 sregs [1] = var->inst_basereg;
14950                                                 //mono_inst_set_src_registers (ins, sregs);
14951                                                 ins->inst_offset = var->inst_offset;
14952                                         } else {
14953                                                 if (MONO_IS_REAL_MOVE (ins)) {
14954                                                         ins->opcode = OP_NOP;
14955                                                         sreg = ins->dreg;
14956                                                 } else {
14957                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14958
14959                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14960
14961                                                         if ((!cfg->backend->use_fpstack || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
14962                                                                 if (var->dreg == prev_dreg) {
14963                                                                         /*
14964                                                                          * sreg refers to the value loaded by the load
14965                                                                          * emitted below, but we need to use ins->dreg
14966                                                                          * since it refers to the store emitted earlier.
14967                                                                          */
14968                                                                         sreg = ins->dreg;
14969                                                                 }
14970                                                                 g_assert (sreg != -1);
14971                                                                 vreg_to_lvreg [var->dreg] = sreg;
14972                                                                 g_assert (lvregs_len < 1024);
14973                                                                 lvregs [lvregs_len ++] = var->dreg;
14974                                                         }
14975                                                 }
14976
14977                                                 sregs [srcindex] = sreg;
14978                                                 //mono_inst_set_src_registers (ins, sregs);
14979
14980 #if SIZEOF_REGISTER != 8
14981                                                 if (regtype == 'l') {
14982                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14983                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14984                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14985                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14986                                                         use_ins = load_ins;
14987                                                 }
14988                                                 else
14989 #endif
14990                                                 {
14991 #if SIZEOF_REGISTER == 4
14992                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14993 #endif
14994                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14995                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14996                                                         use_ins = load_ins;
14997                                                 }
14998                                         }
14999
15000                                         if (var->dreg < orig_next_vreg) {
15001                                                 live_range_end [var->dreg] = use_ins;
15002                                                 live_range_end_bb [var->dreg] = bb;
15003                                         }
15004
15005                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
15006                                                 MonoInst *tmp;
15007
15008                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
15009                                                 tmp->inst_c1 = var->dreg;
15010                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
15011                                         }
15012                                 }
15013                         }
15014                         mono_inst_set_src_registers (ins, sregs);
15015
15016                         if (dest_has_lvreg) {
15017                                 g_assert (ins->dreg != -1);
15018                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
15019                                 g_assert (lvregs_len < 1024);
15020                                 lvregs [lvregs_len ++] = prev_dreg;
15021                                 dest_has_lvreg = FALSE;
15022                         }
15023
15024                         if (store) {
15025                                 tmp_reg = ins->dreg;
15026                                 ins->dreg = ins->sreg2;
15027                                 ins->sreg2 = tmp_reg;
15028                         }
15029
15030                         if (MONO_IS_CALL (ins)) {
15031                                 /* Clear vreg_to_lvreg array */
15032                                 for (i = 0; i < lvregs_len; i++)
15033                                         vreg_to_lvreg [lvregs [i]] = 0;
15034                                 lvregs_len = 0;
15035                         } else if (ins->opcode == OP_NOP) {
15036                                 ins->dreg = -1;
15037                                 MONO_INST_NULLIFY_SREGS (ins);
15038                         }
15039
15040                         if (cfg->verbose_level > 2)
15041                                 mono_print_ins_index (1, ins);
15042                 }
15043
15044                 /* Extend the live range based on the liveness info */
15045                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
15046                         for (i = 0; i < cfg->num_varinfo; i ++) {
15047                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
15048
15049                                 if (vreg_is_volatile (cfg, vi->vreg))
15050                                         /* The liveness info is incomplete */
15051                                         continue;
15052
15053                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
15054                                         /* Live from at least the first ins of this bb */
15055                                         live_range_start [vi->vreg] = bb->code;
15056                                         live_range_start_bb [vi->vreg] = bb;
15057                                 }
15058
15059                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
15060                                         /* Live at least until the last ins of this bb */
15061                                         live_range_end [vi->vreg] = bb->last_ins;
15062                                         live_range_end_bb [vi->vreg] = bb;
15063                                 }
15064                         }
15065                 }
15066         }
15067
15068         /*
15069          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
15070          * by storing the current native offset into MonoMethodVar->live_range_start/end.
15071          */
15072         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15073                 for (i = 0; i < cfg->num_varinfo; ++i) {
15074                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15075                         MonoInst *ins;
15076
15077                         if (live_range_start [vreg]) {
15078                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15079                                 ins->inst_c0 = i;
15080                                 ins->inst_c1 = vreg;
15081                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15082                         }
15083                         if (live_range_end [vreg]) {
15084                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15085                                 ins->inst_c0 = i;
15086                                 ins->inst_c1 = vreg;
15087                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15088                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15089                                 else
15090                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15091                         }
15092                 }
15093         }
15094
15095         if (cfg->gsharedvt_locals_var_ins) {
15096                 /* Nullify if unused */
15097                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15098                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15099         }
15100
15101         g_free (live_range_start);
15102         g_free (live_range_end);
15103         g_free (live_range_start_bb);
15104         g_free (live_range_end_bb);
15105 }
15106
15107 static void
15108 mono_decompose_typecheck (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
15109 {
15110         MonoInst *ret, *move, *source;
15111         MonoClass *klass = ins->klass;
15112         int context_used = mini_class_check_context_used (cfg, klass);
15113         int is_isinst = ins->opcode == OP_ISINST;
15114         g_assert (is_isinst || ins->opcode == OP_CASTCLASS);
15115         source = get_vreg_to_inst (cfg, ins->sreg1);
15116         if (!source || source == (MonoInst *) -1)
15117                 source = mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, ins->sreg1);
15118         g_assert (source && source != (MonoInst *) -1);
15119
15120         MonoBasicBlock *first_bb;
15121         NEW_BBLOCK (cfg, first_bb);
15122         cfg->cbb = first_bb;
15123
15124         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
15125                 if (is_isinst)
15126                         ret = emit_isinst_with_cache_nonshared (cfg, source, klass);
15127                 else
15128                         ret = emit_castclass_with_cache_nonshared (cfg, source, klass);
15129         } else if (!context_used && (mono_class_is_marshalbyref (klass) || mono_class_is_interface (klass))) {
15130                 MonoInst *iargs [1];
15131                 int costs;
15132
15133                 iargs [0] = source;
15134                 if (is_isinst) {
15135                         MonoMethod *wrapper = mono_marshal_get_isinst (klass);
15136                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15137                 } else {
15138                         MonoMethod *wrapper = mono_marshal_get_castclass (klass);
15139                         save_cast_details (cfg, klass, source->dreg, TRUE);
15140                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15141                         reset_cast_details (cfg);
15142                 }
15143                 g_assert (costs > 0);
15144                 ret = iargs [0];
15145         } else {
15146                 if (is_isinst)
15147                         ret = handle_isinst (cfg, klass, source, context_used);
15148                 else
15149                         ret = handle_castclass (cfg, klass, source, context_used);
15150         }
15151         EMIT_NEW_UNALU (cfg, move, OP_MOVE, ins->dreg, ret->dreg);
15152
15153         g_assert (cfg->cbb->code || first_bb->code);
15154         MonoInst *prev = ins->prev;
15155         mono_replace_ins (cfg, bb, ins, &prev, first_bb, cfg->cbb);
15156 }
15157
15158 void
15159 mono_decompose_typechecks (MonoCompile *cfg)
15160 {
15161         for (MonoBasicBlock *bb = cfg->bb_entry; bb; bb = bb->next_bb) {
15162                 MonoInst *ins;
15163                 MONO_BB_FOR_EACH_INS (bb, ins) {
15164                         switch (ins->opcode) {
15165                         case OP_ISINST:
15166                         case OP_CASTCLASS:
15167                                 mono_decompose_typecheck (cfg, bb, ins);
15168                                 break;
15169                         }
15170                 }
15171         }
15172 }
15173
15174
15175 /**
15176  * FIXME:
15177  * - use 'iadd' instead of 'int_add'
15178  * - handling ovf opcodes: decompose in method_to_ir.
15179  * - unify iregs/fregs
15180  *   -> partly done, the missing parts are:
15181  *   - a more complete unification would involve unifying the hregs as well, so
15182  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15183  *     would no longer map to the machine hregs, so the code generators would need to
15184  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15185  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15186  *     fp/non-fp branches speeds it up by about 15%.
15187  * - use sext/zext opcodes instead of shifts
15188  * - add OP_ICALL
15189  * - get rid of TEMPLOADs if possible and use vregs instead
15190  * - clean up usage of OP_P/OP_ opcodes
15191  * - cleanup usage of DUMMY_USE
15192  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15193  *   stack
15194  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15195  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15196  * - make sure handle_stack_args () is called before the branch is emitted
15197  * - when the new IR is done, get rid of all unused stuff
15198  * - COMPARE/BEQ as separate instructions or unify them ?
15199  *   - keeping them separate allows specialized compare instructions like
15200  *     compare_imm, compare_membase
15201  *   - most back ends unify fp compare+branch, fp compare+ceq
15202  * - integrate mono_save_args into inline_method
15203  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15204  * - handle long shift opts on 32 bit platforms somehow: they require
15205  *   3 sregs (2 for arg1 and 1 for arg2)
15206  * - make byref a 'normal' type.
15207  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15208  *   variable if needed.
15209  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15210  *   like inline_method.
15211  * - remove inlining restrictions
15212  * - fix LNEG and enable cfold of INEG
15213  * - generalize x86 optimizations like ldelema as a peephole optimization
15214  * - add store_mem_imm for amd64
15215  * - optimize the loading of the interruption flag in the managed->native wrappers
15216  * - avoid special handling of OP_NOP in passes
15217  * - move code inserting instructions into one function/macro.
15218  * - try a coalescing phase after liveness analysis
15219  * - add float -> vreg conversion + local optimizations on !x86
15220  * - figure out how to handle decomposed branches during optimizations, ie.
15221  *   compare+branch, op_jump_table+op_br etc.
15222  * - promote RuntimeXHandles to vregs
15223  * - vtype cleanups:
15224  *   - add a NEW_VARLOADA_VREG macro
15225  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15226  *   accessing vtype fields.
15227  * - get rid of I8CONST on 64 bit platforms
15228  * - dealing with the increase in code size due to branches created during opcode
15229  *   decomposition:
15230  *   - use extended basic blocks
15231  *     - all parts of the JIT
15232  *     - handle_global_vregs () && local regalloc
15233  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15234  * - sources of increase in code size:
15235  *   - vtypes
15236  *   - long compares
15237  *   - isinst and castclass
15238  *   - lvregs not allocated to global registers even if used multiple times
15239  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15240  *   meaningful.
15241  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15242  * - add all micro optimizations from the old JIT
15243  * - put tree optimizations into the deadce pass
15244  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15245  *   specific function.
15246  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15247  *   fcompare + branchCC.
15248  * - create a helper function for allocating a stack slot, taking into account
15249  *   MONO_CFG_HAS_SPILLUP.
15250  * - merge r68207.
15251  * - merge the ia64 switch changes.
15252  * - optimize mono_regstate2_alloc_int/float.
15253  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15254  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15255  *   parts of the tree could be separated by other instructions, killing the tree
15256  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15257  *   instructions if the result of the load is used multiple times ?
15258  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15259  * - LAST MERGE: 108395.
15260  * - when returning vtypes in registers, generate IR and append it to the end of the
15261  *   last bb instead of doing it in the epilog.
15262  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15263  */
15264
15265 /*
15266
15267 NOTES
15268 -----
15269
15270 - When to decompose opcodes:
15271   - earlier: this makes some optimizations hard to implement, since the low level IR
15272   no longer contains the neccessary information. But it is easier to do.
15273   - later: harder to implement, enables more optimizations.
15274 - Branches inside bblocks:
15275   - created when decomposing complex opcodes.
15276     - branches to another bblock: harmless, but not tracked by the branch
15277       optimizations, so need to branch to a label at the start of the bblock.
15278     - branches to inside the same bblock: very problematic, trips up the local
15279       reg allocator. Can be fixed by spitting the current bblock, but that is a
15280       complex operation, since some local vregs can become global vregs etc.
15281 - Local/global vregs:
15282   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15283     local register allocator.
15284   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15285     structure, created by mono_create_var (). Assigned to hregs or the stack by
15286     the global register allocator.
15287 - When to do optimizations like alu->alu_imm:
15288   - earlier -> saves work later on since the IR will be smaller/simpler
15289   - later -> can work on more instructions
15290 - Handling of valuetypes:
15291   - When a vtype is pushed on the stack, a new temporary is created, an
15292     instruction computing its address (LDADDR) is emitted and pushed on
15293     the stack. Need to optimize cases when the vtype is used immediately as in
15294     argument passing, stloc etc.
15295 - Instead of the to_end stuff in the old JIT, simply call the function handling
15296   the values on the stack before emitting the last instruction of the bb.
15297 */
15298
15299 #else /* !DISABLE_JIT */
15300
15301 MONO_EMPTY_SOURCE_FILE (method_to_ir);
15302
15303 #endif /* !DISABLE_JIT */