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
  16 #ifndef DISABLE_JIT
  17
  18 #include <signal.h>
  19
  20 #ifdef HAVE_UNISTD_H
  21 #include <unistd.h>
  22 #endif
  23
  24 #include <math.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27
  28 #ifdef HAVE_SYS_TIME_H
  29 #include <sys/time.h>
  30 #endif
  31
  32 #ifdef HAVE_ALLOCA_H
  33 #include <alloca.h>
  34 #endif
  35
  36 #include <mono/utils/memcheck.h>
  37 #include "mini.h"
  38 #include <mono/metadata/abi-details.h>
  39 #include <mono/metadata/assembly.h>
  40 #include <mono/metadata/attrdefs.h>
  41 #include <mono/metadata/loader.h>
  42 #include <mono/metadata/tabledefs.h>
  43 #include <mono/metadata/class.h>
  44 #include <mono/metadata/object.h>
  45 #include <mono/metadata/exception.h>
  46 #include <mono/metadata/opcodes.h>
  47 #include <mono/metadata/mono-endian.h>
  48 #include <mono/metadata/tokentype.h>
  49 #include <mono/metadata/tabledefs.h>
  50 #include <mono/metadata/marshal.h>
  51 #include <mono/metadata/debug-helpers.h>
  52 #include <mono/metadata/mono-debug.h>
  53 #include <mono/metadata/mono-debug-debugger.h>
  54 #include <mono/metadata/gc-internals.h>
  55 #include <mono/metadata/security-manager.h>
  56 #include <mono/metadata/threads-types.h>
  57 #include <mono/metadata/security-core-clr.h>
  58 #include <mono/metadata/profiler-private.h>
  59 #include <mono/metadata/profiler.h>
  60 #include <mono/metadata/monitor.h>
  61 #include <mono/metadata/debug-mono-symfile.h>
  62 #include <mono/utils/mono-compiler.h>
  63 #include <mono/utils/mono-memory-model.h>
  64 #include <mono/utils/mono-error-internals.h>
  65 #include <mono/metadata/mono-basic-block.h>
  66 #include <mono/metadata/reflection-internals.h>
  67 #include <mono/utils/mono-threads-coop.h>
  68
  69 #include "trace.h"
  70
  71 #include "ir-emit.h"
  72
  73 #include "jit-icalls.h"
  74 #include "jit.h"
  75 #include "debugger-agent.h"
  76 #include "seq-points.h"
  77 #include "aot-compiler.h"
  78 #include "mini-llvm.h"
  79
  80 #define BRANCH_COST 10
  81 #define INLINE_LENGTH_LIMIT 20
  82
  83 /* These have 'cfg' as an implicit argument */
  84 #define INLINE_FAILURE(msg) do {                                                                        \
  85         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  86                 inline_failure (cfg, msg);                                                                              \
  87                 goto exception_exit;                                                                                    \
  88         } \
  89         } while (0)
  90 #define CHECK_CFG_EXCEPTION do {\
  91                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  92                         goto exception_exit;                                            \
  93         } while (0)
  94 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  95                 field_access_failure ((cfg), (method), (field));                        \
  96                 goto exception_exit;    \
  97         } while (0)
  98 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  99                 if (cfg->gshared) {                                                                     \
 100                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 101                         goto exception_exit;    \
 102                 }                       \
 103         } while (0)
 104 #define GSHAREDVT_FAILURE(opcode) do {          \
 105         if (cfg->gsharedvt) {                                                                                           \
 106                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 107                 goto exception_exit;                                                                                    \
 108         }                                                                                                                                       \
 109         } while (0)
 110 #define OUT_OF_MEMORY_FAILURE do {      \
 111                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 112                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 113                 goto exception_exit;    \
 114         } while (0)
 115 #define DISABLE_AOT(cfg) do { \
 116                 if ((cfg)->verbose_level >= 2)                                            \
 117                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 118                 (cfg)->disable_aot = TRUE;                                                        \
 119         } while (0)
 120 #define LOAD_ERROR do { \
 121                 break_on_unverified ();                                                         \
 122                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 123                 goto exception_exit;                                                                    \
 124         } while (0)
 125
 126 #define TYPE_LOAD_ERROR(klass) do { \
 127                 cfg->exception_ptr = klass; \
 128                 LOAD_ERROR;                                     \
 129         } while (0)
 130
 131 #define CHECK_CFG_ERROR do {\
 132                 if (!mono_error_ok (&cfg->error)) { \
 133                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 134                         goto mono_error_exit; \
 135                 } \
 136         } while (0)
 137
 138 /* Determine whenever 'ins' represents a load of the 'this' argument */
 139 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 140
 141 static int ldind_to_load_membase (int opcode);
 142 static int stind_to_store_membase (int opcode);
 143
 144 int mono_op_to_op_imm (int opcode);
 145 int mono_op_to_op_imm_noemul (int opcode);
 146
 147 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 148
 149 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 150                                                   guchar *ip, guint real_offset, gboolean inline_always);
 151 static MonoInst*
 152 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 153
 154 /* helper methods signatures */
 155 static MonoMethodSignature *helper_sig_domain_get;
 156 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 157 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 158
 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_thunk = 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_LOADU2_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_LOADU2_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 (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
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                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
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 && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
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 || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
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 (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
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 && !klass->generic_class) {
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 (klass->generic_class) {
4437                 container = klass->generic_class->container_class->generic_container;
4438                 ginst = klass->generic_class->context.class_inst;
4439         } else if (klass->generic_container && context_used) {
4440                 container = klass->generic_container;
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 #define is_complex_isinst(klass) ((klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || mono_class_is_marshalbyref (klass) || (klass->flags & TYPE_ATTRIBUTE_SEALED) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
4490
4491 static MonoInst*
4492 emit_isinst_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4493 {
4494         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4495         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4496 }
4497
4498 static MonoInst*
4499 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4500 {
4501         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
4502         MonoInst *res;
4503
4504         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4505         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4506         reset_cast_details (cfg);
4507
4508         return res;
4509 }
4510
4511 static int
4512 get_castclass_cache_idx (MonoCompile *cfg)
4513 {
4514         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4515         cfg->castclass_cache_index ++;
4516         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4517 }
4518
4519
4520 static MonoInst*
4521 emit_isinst_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4522 {
4523         MonoInst *args [3];
4524         int idx;
4525
4526         args [0] = obj; /* obj */
4527         EMIT_NEW_CLASSCONST (cfg, args [1], klass); /* klass */
4528
4529         idx = get_castclass_cache_idx (cfg); /* inline cache*/
4530         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4531
4532         return emit_isinst_with_cache (cfg, klass, args);
4533 }
4534
4535 static MonoInst*
4536 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4537 {
4538         MonoInst *args [3];
4539         int idx;
4540
4541         /* obj */
4542         args [0] = obj;
4543
4544         /* klass */
4545         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4546
4547         /* inline cache*/
4548         idx = get_castclass_cache_idx (cfg);
4549         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4550
4551         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4552         return emit_castclass_with_cache (cfg, klass, args);
4553 }
4554
4555 /*
4556  * Returns NULL and set the cfg exception on error.
4557  */
4558 static MonoInst*
4559 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4560 {
4561         MonoBasicBlock *is_null_bb;
4562         int obj_reg = src->dreg;
4563         int vtable_reg = alloc_preg (cfg);
4564         MonoInst *klass_inst = NULL;
4565
4566         if (src->opcode == OP_PCONST && src->inst_p0 == 0)
4567                 return src;
4568
4569         if (context_used) {
4570                 MonoInst *args [3];
4571
4572                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4573                         MonoInst *cache_ins;
4574
4575                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4576
4577                         /* obj */
4578                         args [0] = src;
4579
4580                         /* klass - it's the second element of the cache entry*/
4581                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4582
4583                         /* cache */
4584                         args [2] = cache_ins;
4585
4586                         return emit_castclass_with_cache (cfg, klass, args);
4587                 }
4588
4589                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4590         }
4591
4592         NEW_BBLOCK (cfg, is_null_bb);
4593
4594         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4595         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4596
4597         save_cast_details (cfg, klass, obj_reg, FALSE);
4598
4599         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4600                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4601                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4602         } else {
4603                 int klass_reg = alloc_preg (cfg);
4604
4605                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4606
4607                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4608                         /* the remoting code is broken, access the class for now */
4609                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4610                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4611                                 if (!vt) {
4612                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4613                                         cfg->exception_ptr = klass;
4614                                         return NULL;
4615                                 }
4616                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4617                         } else {
4618                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4619                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4620                         }
4621                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4622                 } else {
4623                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4624                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4625                 }
4626         }
4627
4628         MONO_START_BB (cfg, is_null_bb);
4629
4630         reset_cast_details (cfg);
4631
4632         return src;
4633 }
4634
4635 /*
4636  * Returns NULL and set the cfg exception on error.
4637  */
4638 static MonoInst*
4639 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4640 {
4641         MonoInst *ins;
4642         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4643         int obj_reg = src->dreg;
4644         int vtable_reg = alloc_preg (cfg);
4645         int res_reg = alloc_ireg_ref (cfg);
4646         MonoInst *klass_inst = NULL;
4647
4648         if (context_used) {
4649                 MonoInst *args [3];
4650
4651                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4652                         MonoInst *cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4653
4654                         args [0] = src; /* obj */
4655
4656                         /* klass - it's the second element of the cache entry*/
4657                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4658
4659                         args [2] = cache_ins; /* cache */
4660                         return emit_isinst_with_cache (cfg, klass, args);
4661                 }
4662
4663                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4664         }
4665
4666         NEW_BBLOCK (cfg, is_null_bb);
4667         NEW_BBLOCK (cfg, false_bb);
4668         NEW_BBLOCK (cfg, end_bb);
4669
4670         /* Do the assignment at the beginning, so the other assignment can be if converted */
4671         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4672         ins->type = STACK_OBJ;
4673         ins->klass = klass;
4674
4675         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4676         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4677
4678         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4679
4680         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4681                 g_assert (!context_used);
4682                 /* the is_null_bb target simply copies the input register to the output */
4683                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4684         } else {
4685                 int klass_reg = alloc_preg (cfg);
4686
4687                 if (klass->rank) {
4688                         int rank_reg = alloc_preg (cfg);
4689                         int eclass_reg = alloc_preg (cfg);
4690
4691                         g_assert (!context_used);
4692                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4693                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4694                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4695                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4696                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4697                         if (klass->cast_class == mono_defaults.object_class) {
4698                                 int parent_reg = alloc_preg (cfg);
4699                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4700                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4701                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4702                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4703                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4704                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4705                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4706                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4707                         } else if (klass->cast_class == mono_defaults.enum_class) {
4708                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4709                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4710                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4711                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4712                         } else {
4713                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4714                                         /* Check that the object is a vector too */
4715                                         int bounds_reg = alloc_preg (cfg);
4716                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4717                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4718                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4719                                 }
4720
4721                                 /* the is_null_bb target simply copies the input register to the output */
4722                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4723                         }
4724                 } else if (mono_class_is_nullable (klass)) {
4725                         g_assert (!context_used);
4726                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4727                         /* the is_null_bb target simply copies the input register to the output */
4728                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4729                 } else {
4730                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4731                                 g_assert (!context_used);
4732                                 /* the remoting code is broken, access the class for now */
4733                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4734                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4735                                         if (!vt) {
4736                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4737                                                 cfg->exception_ptr = klass;
4738                                                 return NULL;
4739                                         }
4740                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4741                                 } else {
4742                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4743                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4744                                 }
4745                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4746                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4747                         } else {
4748                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4749                                 /* the is_null_bb target simply copies the input register to the output */
4750                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4751                         }
4752                 }
4753         }
4754
4755         MONO_START_BB (cfg, false_bb);
4756
4757         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4758         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4759
4760         MONO_START_BB (cfg, is_null_bb);
4761
4762         MONO_START_BB (cfg, end_bb);
4763
4764         return ins;
4765 }
4766
4767 static MonoInst*
4768 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4769 {
4770         /* This opcode takes as input an object reference and a class, and returns:
4771         0) if the object is an instance of the class,
4772         1) if the object is not instance of the class,
4773         2) if the object is a proxy whose type cannot be determined */
4774
4775         MonoInst *ins;
4776 #ifndef DISABLE_REMOTING
4777         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4778 #else
4779         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4780 #endif
4781         int obj_reg = src->dreg;
4782         int dreg = alloc_ireg (cfg);
4783         int tmp_reg;
4784 #ifndef DISABLE_REMOTING
4785         int klass_reg = alloc_preg (cfg);
4786 #endif
4787
4788         NEW_BBLOCK (cfg, true_bb);
4789         NEW_BBLOCK (cfg, false_bb);
4790         NEW_BBLOCK (cfg, end_bb);
4791 #ifndef DISABLE_REMOTING
4792         NEW_BBLOCK (cfg, false2_bb);
4793         NEW_BBLOCK (cfg, no_proxy_bb);
4794 #endif
4795
4796         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4797         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4798
4799         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4800 #ifndef DISABLE_REMOTING
4801                 NEW_BBLOCK (cfg, interface_fail_bb);
4802 #endif
4803
4804                 tmp_reg = alloc_preg (cfg);
4805                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4806 #ifndef DISABLE_REMOTING
4807                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4808                 MONO_START_BB (cfg, interface_fail_bb);
4809                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4810
4811                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4812
4813                 tmp_reg = alloc_preg (cfg);
4814                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4815                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4817 #else
4818                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4819 #endif
4820         } else {
4821 #ifndef DISABLE_REMOTING
4822                 tmp_reg = alloc_preg (cfg);
4823                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4824                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4825
4826                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4827                 tmp_reg = alloc_preg (cfg);
4828                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4829                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4830
4831                 tmp_reg = alloc_preg (cfg);
4832                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4833                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4834                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4835
4836                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4837                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4838
4839                 MONO_START_BB (cfg, no_proxy_bb);
4840
4841                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4842 #else
4843                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4844 #endif
4845         }
4846
4847         MONO_START_BB (cfg, false_bb);
4848
4849         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4850         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4851
4852 #ifndef DISABLE_REMOTING
4853         MONO_START_BB (cfg, false2_bb);
4854
4855         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4856         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4857 #endif
4858
4859         MONO_START_BB (cfg, true_bb);
4860
4861         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4862
4863         MONO_START_BB (cfg, end_bb);
4864
4865         /* FIXME: */
4866         MONO_INST_NEW (cfg, ins, OP_ICONST);
4867         ins->dreg = dreg;
4868         ins->type = STACK_I4;
4869
4870         return ins;
4871 }
4872
4873 static MonoInst*
4874 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4875 {
4876         /* This opcode takes as input an object reference and a class, and returns:
4877         0) if the object is an instance of the class,
4878         1) if the object is a proxy whose type cannot be determined
4879         an InvalidCastException exception is thrown otherwhise*/
4880
4881         MonoInst *ins;
4882 #ifndef DISABLE_REMOTING
4883         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4884 #else
4885         MonoBasicBlock *ok_result_bb;
4886 #endif
4887         int obj_reg = src->dreg;
4888         int dreg = alloc_ireg (cfg);
4889         int tmp_reg = alloc_preg (cfg);
4890
4891 #ifndef DISABLE_REMOTING
4892         int klass_reg = alloc_preg (cfg);
4893         NEW_BBLOCK (cfg, end_bb);
4894 #endif
4895
4896         NEW_BBLOCK (cfg, ok_result_bb);
4897
4898         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4899         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4900
4901         save_cast_details (cfg, klass, obj_reg, FALSE);
4902
4903         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4904 #ifndef DISABLE_REMOTING
4905                 NEW_BBLOCK (cfg, interface_fail_bb);
4906
4907                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4908                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4909                 MONO_START_BB (cfg, interface_fail_bb);
4910                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4911
4912                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4913
4914                 tmp_reg = alloc_preg (cfg);
4915                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4916                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4917                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4918
4919                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4920                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4921 #else
4922                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4923                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4924                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4925 #endif
4926         } else {
4927 #ifndef DISABLE_REMOTING
4928                 NEW_BBLOCK (cfg, no_proxy_bb);
4929
4930                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4931                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4932                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4933
4934                 tmp_reg = alloc_preg (cfg);
4935                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4936                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4937
4938                 tmp_reg = alloc_preg (cfg);
4939                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4940                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4941                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4942
4943                 NEW_BBLOCK (cfg, fail_1_bb);
4944
4945                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4946
4947                 MONO_START_BB (cfg, fail_1_bb);
4948
4949                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4950                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4951
4952                 MONO_START_BB (cfg, no_proxy_bb);
4953
4954                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4955 #else
4956                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4957 #endif
4958         }
4959
4960         MONO_START_BB (cfg, ok_result_bb);
4961
4962         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4963
4964 #ifndef DISABLE_REMOTING
4965         MONO_START_BB (cfg, end_bb);
4966 #endif
4967
4968         /* FIXME: */
4969         MONO_INST_NEW (cfg, ins, OP_ICONST);
4970         ins->dreg = dreg;
4971         ins->type = STACK_I4;
4972
4973         return ins;
4974 }
4975
4976 static G_GNUC_UNUSED MonoInst*
4977 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4978 {
4979         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4980         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4981         gboolean is_i4;
4982
4983         switch (enum_type->type) {
4984         case MONO_TYPE_I8:
4985         case MONO_TYPE_U8:
4986 #if SIZEOF_REGISTER == 8
4987         case MONO_TYPE_I:
4988         case MONO_TYPE_U:
4989 #endif
4990                 is_i4 = FALSE;
4991                 break;
4992         default:
4993                 is_i4 = TRUE;
4994                 break;
4995         }
4996
4997         {
4998                 MonoInst *load, *and_, *cmp, *ceq;
4999                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5000                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5001                 int dest_reg = alloc_ireg (cfg);
5002
5003                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5004                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5005                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5006                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5007
5008                 ceq->type = STACK_I4;
5009
5010                 if (!is_i4) {
5011                         load = mono_decompose_opcode (cfg, load);
5012                         and_ = mono_decompose_opcode (cfg, and_);
5013                         cmp = mono_decompose_opcode (cfg, cmp);
5014                         ceq = mono_decompose_opcode (cfg, ceq);
5015                 }
5016
5017                 return ceq;
5018         }
5019 }
5020
5021 /*
5022  * Returns NULL and set the cfg exception on error.
5023  */
5024 static G_GNUC_UNUSED MonoInst*
5025 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5026 {
5027         MonoInst *ptr;
5028         int dreg;
5029         gpointer trampoline;
5030         MonoInst *obj, *method_ins, *tramp_ins;
5031         MonoDomain *domain;
5032         guint8 **code_slot;
5033
5034         if (virtual_ && !cfg->llvm_only) {
5035                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5036                 g_assert (invoke);
5037
5038                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5039                         return NULL;
5040         }
5041
5042         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5043         if (!obj)
5044                 return NULL;
5045
5046         /* Inline the contents of mono_delegate_ctor */
5047
5048         /* Set target field */
5049         /* Optimize away setting of NULL target */
5050         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5051                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5052                 if (cfg->gen_write_barriers) {
5053                         dreg = alloc_preg (cfg);
5054                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5055                         emit_write_barrier (cfg, ptr, target);
5056                 }
5057         }
5058
5059         /* Set method field */
5060         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5061         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5062
5063         /*
5064          * To avoid looking up the compiled code belonging to the target method
5065          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5066          * store it, and we fill it after the method has been compiled.
5067          */
5068         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5069                 MonoInst *code_slot_ins;
5070
5071                 if (context_used) {
5072                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5073                 } else {
5074                         domain = mono_domain_get ();
5075                         mono_domain_lock (domain);
5076                         if (!domain_jit_info (domain)->method_code_hash)
5077                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5078                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5079                         if (!code_slot) {
5080                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5081                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5082                         }
5083                         mono_domain_unlock (domain);
5084
5085                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5086                 }
5087                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5088         }
5089
5090         if (cfg->llvm_only) {
5091                 MonoInst *args [16];
5092
5093                 if (virtual_) {
5094                         args [0] = obj;
5095                         args [1] = target;
5096                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5097                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5098                 } else {
5099                         args [0] = obj;
5100                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5101                 }
5102
5103                 return obj;
5104         }
5105
5106         if (cfg->compile_aot) {
5107                 MonoDelegateClassMethodPair *del_tramp;
5108
5109                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5110                 del_tramp->klass = klass;
5111                 del_tramp->method = context_used ? NULL : method;
5112                 del_tramp->is_virtual = virtual_;
5113                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5114         } else {
5115                 if (virtual_)
5116                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5117                 else
5118                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5119                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5120         }
5121
5122         /* Set invoke_impl field */
5123         if (virtual_) {
5124                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5125         } else {
5126                 dreg = alloc_preg (cfg);
5127                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5128                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5129
5130                 dreg = alloc_preg (cfg);
5131                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5132                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5133         }
5134
5135         dreg = alloc_preg (cfg);
5136         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5137         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5138
5139         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5140
5141         return obj;
5142 }
5143
5144 static MonoInst*
5145 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5146 {
5147         MonoJitICallInfo *info;
5148
5149         /* Need to register the icall so it gets an icall wrapper */
5150         info = mono_get_array_new_va_icall (rank);
5151
5152         cfg->flags |= MONO_CFG_HAS_VARARGS;
5153
5154         /* mono_array_new_va () needs a vararg calling convention */
5155         cfg->exception_message = g_strdup ("array-new");
5156         cfg->disable_llvm = TRUE;
5157
5158         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5159         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5160 }
5161
5162 /*
5163  * handle_constrained_gsharedvt_call:
5164  *
5165  *   Handle constrained calls where the receiver is a gsharedvt type.
5166  * Return the instruction representing the call. Set the cfg exception on failure.
5167  */
5168 static MonoInst*
5169 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5170                                                                    gboolean *ref_emit_widen)
5171 {
5172         MonoInst *ins = NULL;
5173         gboolean emit_widen = *ref_emit_widen;
5174
5175         /*
5176          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5177          * 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
5178          * pack the arguments into an array, and do the rest of the work in in an icall.
5179          */
5180         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5181                 (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)) &&
5182                 (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]))))) {
5183                 MonoInst *args [16];
5184
5185                 /*
5186                  * This case handles calls to
5187                  * - object:ToString()/Equals()/GetHashCode(),
5188                  * - System.IComparable<T>:CompareTo()
5189                  * - System.IEquatable<T>:Equals ()
5190                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5191                  */
5192
5193                 args [0] = sp [0];
5194                 if (mono_method_check_context_used (cmethod))
5195                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5196                 else
5197                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5198                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5199
5200                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5201                 if (fsig->hasthis && fsig->param_count) {
5202                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5203                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5204                         ins->dreg = alloc_preg (cfg);
5205                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5206                         MONO_ADD_INS (cfg->cbb, ins);
5207                         args [4] = ins;
5208
5209                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5210                                 int addr_reg, deref_arg_reg;
5211
5212                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5213                                 deref_arg_reg = alloc_preg (cfg);
5214                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5215                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5216
5217                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5218                                 addr_reg = ins->dreg;
5219                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5220                         } else {
5221                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5222                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5223                         }
5224                 } else {
5225                         EMIT_NEW_ICONST (cfg, args [3], 0);
5226                         EMIT_NEW_ICONST (cfg, args [4], 0);
5227                 }
5228                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5229                 emit_widen = FALSE;
5230
5231                 if (mini_is_gsharedvt_type (fsig->ret)) {
5232                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5233                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5234                         MonoInst *add;
5235
5236                         /* Unbox */
5237                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5238                         MONO_ADD_INS (cfg->cbb, add);
5239                         /* Load value */
5240                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5241                         MONO_ADD_INS (cfg->cbb, ins);
5242                         /* ins represents the call result */
5243                 }
5244         } else {
5245                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5246         }
5247
5248         *ref_emit_widen = emit_widen;
5249
5250         return ins;
5251
5252  exception_exit:
5253         return NULL;
5254 }
5255
5256 static void
5257 mono_emit_load_got_addr (MonoCompile *cfg)
5258 {
5259         MonoInst *getaddr, *dummy_use;
5260
5261         if (!cfg->got_var || cfg->got_var_allocated)
5262                 return;
5263
5264         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5265         getaddr->cil_code = cfg->header->code;
5266         getaddr->dreg = cfg->got_var->dreg;
5267
5268         /* Add it to the start of the first bblock */
5269         if (cfg->bb_entry->code) {
5270                 getaddr->next = cfg->bb_entry->code;
5271                 cfg->bb_entry->code = getaddr;
5272         }
5273         else
5274                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5275
5276         cfg->got_var_allocated = TRUE;
5277
5278         /*
5279          * Add a dummy use to keep the got_var alive, since real uses might
5280          * only be generated by the back ends.
5281          * Add it to end_bblock, so the variable's lifetime covers the whole
5282          * method.
5283          * It would be better to make the usage of the got var explicit in all
5284          * cases when the backend needs it (i.e. calls, throw etc.), so this
5285          * wouldn't be needed.
5286          */
5287         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5288         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5289 }
5290
5291 static int inline_limit;
5292 static gboolean inline_limit_inited;
5293
5294 static gboolean
5295 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5296 {
5297         MonoMethodHeaderSummary header;
5298         MonoVTable *vtable;
5299 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5300         MonoMethodSignature *sig = mono_method_signature (method);
5301         int i;
5302 #endif
5303
5304         if (cfg->disable_inline)
5305                 return FALSE;
5306         if (cfg->gshared)
5307                 return FALSE;
5308
5309         if (cfg->inline_depth > 10)
5310                 return FALSE;
5311
5312         if (!mono_method_get_header_summary (method, &header))
5313                 return FALSE;
5314
5315         /*runtime, icall and pinvoke are checked by summary call*/
5316         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5317             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5318             (mono_class_is_marshalbyref (method->klass)) ||
5319             header.has_clauses)
5320                 return FALSE;
5321
5322         /* also consider num_locals? */
5323         /* Do the size check early to avoid creating vtables */
5324         if (!inline_limit_inited) {
5325                 if (g_getenv ("MONO_INLINELIMIT"))
5326                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5327                 else
5328                         inline_limit = INLINE_LENGTH_LIMIT;
5329                 inline_limit_inited = TRUE;
5330         }
5331         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5332                 return FALSE;
5333
5334         /*
5335          * if we can initialize the class of the method right away, we do,
5336          * otherwise we don't allow inlining if the class needs initialization,
5337          * since it would mean inserting a call to mono_runtime_class_init()
5338          * inside the inlined code
5339          */
5340         if (!(cfg->opt & MONO_OPT_SHARED)) {
5341                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5342                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5343                         vtable = mono_class_vtable (cfg->domain, method->klass);
5344                         if (!vtable)
5345                                 return FALSE;
5346                         if (!cfg->compile_aot) {
5347                                 MonoError error;
5348                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5349                                         mono_error_cleanup (&error);
5350                                         return FALSE;
5351                                 }
5352                         }
5353                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5354                         if (cfg->run_cctors && method->klass->has_cctor) {
5355                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5356                                 if (!method->klass->runtime_info)
5357                                         /* No vtable created yet */
5358                                         return FALSE;
5359                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5360                                 if (!vtable)
5361                                         return FALSE;
5362                                 /* This makes so that inline cannot trigger */
5363                                 /* .cctors: too many apps depend on them */
5364                                 /* running with a specific order... */
5365                                 if (! vtable->initialized)
5366                                         return FALSE;
5367                                 MonoError error;
5368                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5369                                         mono_error_cleanup (&error);
5370                                         return FALSE;
5371                                 }
5372                         }
5373                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5374                         if (!method->klass->runtime_info)
5375                                 /* No vtable created yet */
5376                                 return FALSE;
5377                         vtable = mono_class_vtable (cfg->domain, method->klass);
5378                         if (!vtable)
5379                                 return FALSE;
5380                         if (!vtable->initialized)
5381                                 return FALSE;
5382                 }
5383         } else {
5384                 /*
5385                  * If we're compiling for shared code
5386                  * the cctor will need to be run at aot method load time, for example,
5387                  * or at the end of the compilation of the inlining method.
5388                  */
5389                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5390                         return FALSE;
5391         }
5392
5393 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5394         if (mono_arch_is_soft_float ()) {
5395                 /* FIXME: */
5396                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5397                         return FALSE;
5398                 for (i = 0; i < sig->param_count; ++i)
5399                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5400                                 return FALSE;
5401         }
5402 #endif
5403
5404         if (g_list_find (cfg->dont_inline, method))
5405                 return FALSE;
5406
5407         return TRUE;
5408 }
5409
5410 static gboolean
5411 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5412 {
5413         if (!cfg->compile_aot) {
5414                 g_assert (vtable);
5415                 if (vtable->initialized)
5416                         return FALSE;
5417         }
5418
5419         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5420                 if (cfg->method == method)
5421                         return FALSE;
5422         }
5423
5424         if (!mono_class_needs_cctor_run (klass, method))
5425                 return FALSE;
5426
5427         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5428                 /* The initialization is already done before the method is called */
5429                 return FALSE;
5430
5431         return TRUE;
5432 }
5433
5434 static MonoInst*
5435 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5436 {
5437         MonoInst *ins;
5438         guint32 size;
5439         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5440         int context_used;
5441
5442         if (mini_is_gsharedvt_variable_klass (klass)) {
5443                 size = -1;
5444         } else {
5445                 mono_class_init (klass);
5446                 size = mono_class_array_element_size (klass);
5447         }
5448
5449         mult_reg = alloc_preg (cfg);
5450         array_reg = arr->dreg;
5451         index_reg = index->dreg;
5452
5453 #if SIZEOF_REGISTER == 8
5454         /* The array reg is 64 bits but the index reg is only 32 */
5455         if (COMPILE_LLVM (cfg)) {
5456                 /* Not needed */
5457                 index2_reg = index_reg;
5458         } else {
5459                 index2_reg = alloc_preg (cfg);
5460                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5461         }
5462 #else
5463         if (index->type == STACK_I8) {
5464                 index2_reg = alloc_preg (cfg);
5465                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5466         } else {
5467                 index2_reg = index_reg;
5468         }
5469 #endif
5470
5471         if (bcheck)
5472                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5473
5474 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5475         if (size == 1 || size == 2 || size == 4 || size == 8) {
5476                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5477
5478                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5479                 ins->klass = mono_class_get_element_class (klass);
5480                 ins->type = STACK_MP;
5481
5482                 return ins;
5483         }
5484 #endif
5485
5486         add_reg = alloc_ireg_mp (cfg);
5487
5488         if (size == -1) {
5489                 MonoInst *rgctx_ins;
5490
5491                 /* gsharedvt */
5492                 g_assert (cfg->gshared);
5493                 context_used = mini_class_check_context_used (cfg, klass);
5494                 g_assert (context_used);
5495                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5496                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5497         } else {
5498                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5499         }
5500         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5501         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5502         ins->klass = mono_class_get_element_class (klass);
5503         ins->type = STACK_MP;
5504         MONO_ADD_INS (cfg->cbb, ins);
5505
5506         return ins;
5507 }
5508
5509 static MonoInst*
5510 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5511 {
5512         int bounds_reg = alloc_preg (cfg);
5513         int add_reg = alloc_ireg_mp (cfg);
5514         int mult_reg = alloc_preg (cfg);
5515         int mult2_reg = alloc_preg (cfg);
5516         int low1_reg = alloc_preg (cfg);
5517         int low2_reg = alloc_preg (cfg);
5518         int high1_reg = alloc_preg (cfg);
5519         int high2_reg = alloc_preg (cfg);
5520         int realidx1_reg = alloc_preg (cfg);
5521         int realidx2_reg = alloc_preg (cfg);
5522         int sum_reg = alloc_preg (cfg);
5523         int index1, index2, tmpreg;
5524         MonoInst *ins;
5525         guint32 size;
5526
5527         mono_class_init (klass);
5528         size = mono_class_array_element_size (klass);
5529
5530         index1 = index_ins1->dreg;
5531         index2 = index_ins2->dreg;
5532
5533 #if SIZEOF_REGISTER == 8
5534         /* The array reg is 64 bits but the index reg is only 32 */
5535         if (COMPILE_LLVM (cfg)) {
5536                 /* Not needed */
5537         } else {
5538                 tmpreg = alloc_preg (cfg);
5539                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5540                 index1 = tmpreg;
5541                 tmpreg = alloc_preg (cfg);
5542                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5543                 index2 = tmpreg;
5544         }
5545 #else
5546         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5547         tmpreg = -1;
5548 #endif
5549
5550         /* range checking */
5551         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5552                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5553
5554         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5555                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5556         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5557         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5558                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5559         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5560         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5561
5562         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5563                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5564         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5565         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5566                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5567         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5568         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5569
5570         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5571         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5572         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5573         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5574         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5575
5576         ins->type = STACK_MP;
5577         ins->klass = klass;
5578         MONO_ADD_INS (cfg->cbb, ins);
5579
5580         return ins;
5581 }
5582
5583 static MonoInst*
5584 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5585 {
5586         int rank;
5587         MonoInst *addr;
5588         MonoMethod *addr_method;
5589         int element_size;
5590         MonoClass *eclass = cmethod->klass->element_class;
5591
5592         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5593
5594         if (rank == 1)
5595                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5596
5597         /* emit_ldelema_2 depends on OP_LMUL */
5598         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5599                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5600         }
5601
5602         if (mini_is_gsharedvt_variable_klass (eclass))
5603                 element_size = 0;
5604         else
5605                 element_size = mono_class_array_element_size (eclass);
5606         addr_method = mono_marshal_get_array_address (rank, element_size);
5607         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5608
5609         return addr;
5610 }
5611
5612 static MonoBreakPolicy
5613 always_insert_breakpoint (MonoMethod *method)
5614 {
5615         return MONO_BREAK_POLICY_ALWAYS;
5616 }
5617
5618 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5619
5620 /**
5621  * mono_set_break_policy:
5622  * policy_callback: the new callback function
5623  *
5624  * Allow embedders to decide wherther to actually obey breakpoint instructions
5625  * (both break IL instructions and Debugger.Break () method calls), for example
5626  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5627  * untrusted or semi-trusted code.
5628  *
5629  * @policy_callback will be called every time a break point instruction needs to
5630  * be inserted with the method argument being the method that calls Debugger.Break()
5631  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5632  * if it wants the breakpoint to not be effective in the given method.
5633  * #MONO_BREAK_POLICY_ALWAYS is the default.
5634  */
5635 void
5636 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5637 {
5638         if (policy_callback)
5639                 break_policy_func = policy_callback;
5640         else
5641                 break_policy_func = always_insert_breakpoint;
5642 }
5643
5644 static gboolean
5645 should_insert_brekpoint (MonoMethod *method) {
5646         switch (break_policy_func (method)) {
5647         case MONO_BREAK_POLICY_ALWAYS:
5648                 return TRUE;
5649         case MONO_BREAK_POLICY_NEVER:
5650                 return FALSE;
5651         case MONO_BREAK_POLICY_ON_DBG:
5652                 g_warning ("mdb no longer supported");
5653                 return FALSE;
5654         default:
5655                 g_warning ("Incorrect value returned from break policy callback");
5656                 return FALSE;
5657         }
5658 }
5659
5660 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5661 static MonoInst*
5662 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5663 {
5664         MonoInst *addr, *store, *load;
5665         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5666
5667         /* the bounds check is already done by the callers */
5668         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5669         if (is_set) {
5670                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5671                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5672                 if (mini_type_is_reference (fsig->params [2]))
5673                         emit_write_barrier (cfg, addr, load);
5674         } else {
5675                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5676                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5677         }
5678         return store;
5679 }
5680
5681
5682 static gboolean
5683 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5684 {
5685         return mini_type_is_reference (&klass->byval_arg);
5686 }
5687
5688 static MonoInst*
5689 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5690 {
5691         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5692                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5693                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5694                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5695                 MonoInst *iargs [3];
5696
5697                 if (!helper->slot)
5698                         mono_class_setup_vtable (obj_array);
5699                 g_assert (helper->slot);
5700
5701                 if (sp [0]->type != STACK_OBJ)
5702                         return NULL;
5703                 if (sp [2]->type != STACK_OBJ)
5704                         return NULL;
5705
5706                 iargs [2] = sp [2];
5707                 iargs [1] = sp [1];
5708                 iargs [0] = sp [0];
5709
5710                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5711         } else {
5712                 MonoInst *ins;
5713
5714                 if (mini_is_gsharedvt_variable_klass (klass)) {
5715                         MonoInst *addr;
5716
5717                         // FIXME-VT: OP_ICONST optimization
5718                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5719                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5720                         ins->opcode = OP_STOREV_MEMBASE;
5721                 } else if (sp [1]->opcode == OP_ICONST) {
5722                         int array_reg = sp [0]->dreg;
5723                         int index_reg = sp [1]->dreg;
5724                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5725
5726                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5727                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5728
5729                         if (safety_checks)
5730                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5731                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5732                 } else {
5733                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5734                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5735                         if (generic_class_is_reference_type (cfg, klass))
5736                                 emit_write_barrier (cfg, addr, sp [2]);
5737                 }
5738                 return ins;
5739         }
5740 }
5741
5742 static MonoInst*
5743 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5744 {
5745         MonoClass *eklass;
5746
5747         if (is_set)
5748                 eklass = mono_class_from_mono_type (fsig->params [2]);
5749         else
5750                 eklass = mono_class_from_mono_type (fsig->ret);
5751
5752         if (is_set) {
5753                 return emit_array_store (cfg, eklass, args, FALSE);
5754         } else {
5755                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5756                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5757                 return ins;
5758         }
5759 }
5760
5761 static gboolean
5762 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5763 {
5764         uint32_t align;
5765         int param_size, return_size;
5766
5767         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5768         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5769
5770         if (cfg->verbose_level > 3)
5771                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5772
5773         //Don't allow mixing reference types with value types
5774         if (param_klass->valuetype != return_klass->valuetype) {
5775                 if (cfg->verbose_level > 3)
5776                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5777                 return FALSE;
5778         }
5779
5780         if (!param_klass->valuetype) {
5781                 if (cfg->verbose_level > 3)
5782                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5783                 return TRUE;
5784         }
5785
5786         //That are blitable
5787         if (param_klass->has_references || return_klass->has_references)
5788                 return FALSE;
5789
5790         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5791         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5792                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5793                         if (cfg->verbose_level > 3)
5794                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5795                 return FALSE;
5796         }
5797
5798         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5799                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5800                 if (cfg->verbose_level > 3)
5801                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5802                 return FALSE;
5803         }
5804
5805         param_size = mono_class_value_size (param_klass, &align);
5806         return_size = mono_class_value_size (return_klass, &align);
5807
5808         //We can do it if sizes match
5809         if (param_size == return_size) {
5810                 if (cfg->verbose_level > 3)
5811                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5812                 return TRUE;
5813         }
5814
5815         //No simple way to handle struct if sizes don't match
5816         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5817                 if (cfg->verbose_level > 3)
5818                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5819                 return FALSE;
5820         }
5821
5822         /*
5823          * Same reg size category.
5824          * A quick note on why we don't require widening here.
5825          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5826          *
5827          * Since the source value comes from a function argument, the JIT will already have
5828          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5829          */
5830         if (param_size <= 4 && return_size <= 4) {
5831                 if (cfg->verbose_level > 3)
5832                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5833                 return TRUE;
5834         }
5835
5836         return FALSE;
5837 }
5838
5839 static MonoInst*
5840 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5841 {
5842         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5843         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5844
5845         if (mini_is_gsharedvt_variable_type (fsig->ret))
5846                 return NULL;
5847
5848         //Valuetypes that are semantically equivalent or numbers than can be widened to
5849         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5850                 return args [0];
5851
5852         //Arrays of valuetypes that are semantically equivalent
5853         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5854                 return args [0];
5855
5856         return NULL;
5857 }
5858
5859 static MonoInst*
5860 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5861 {
5862 #ifdef MONO_ARCH_SIMD_INTRINSICS
5863         MonoInst *ins = NULL;
5864
5865         if (cfg->opt & MONO_OPT_SIMD) {
5866                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5867                 if (ins)
5868                         return ins;
5869         }
5870 #endif
5871
5872         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5873 }
5874
5875 static MonoInst*
5876 emit_memory_barrier (MonoCompile *cfg, int kind)
5877 {
5878         MonoInst *ins = NULL;
5879         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5880         MONO_ADD_INS (cfg->cbb, ins);
5881         ins->backend.memory_barrier_kind = kind;
5882
5883         return ins;
5884 }
5885
5886 static MonoInst*
5887 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5888 {
5889         MonoInst *ins = NULL;
5890         int opcode = 0;
5891
5892         /* The LLVM backend supports these intrinsics */
5893         if (cmethod->klass == mono_defaults.math_class) {
5894                 if (strcmp (cmethod->name, "Sin") == 0) {
5895                         opcode = OP_SIN;
5896                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5897                         opcode = OP_COS;
5898                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5899                         opcode = OP_SQRT;
5900                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5901                         opcode = OP_ABS;
5902                 }
5903
5904                 if (opcode && fsig->param_count == 1) {
5905                         MONO_INST_NEW (cfg, ins, opcode);
5906                         ins->type = STACK_R8;
5907                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5908                         ins->sreg1 = args [0]->dreg;
5909                         MONO_ADD_INS (cfg->cbb, ins);
5910                 }
5911
5912                 opcode = 0;
5913                 if (cfg->opt & MONO_OPT_CMOV) {
5914                         if (strcmp (cmethod->name, "Min") == 0) {
5915                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5916                                         opcode = OP_IMIN;
5917                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5918                                         opcode = OP_IMIN_UN;
5919                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5920                                         opcode = OP_LMIN;
5921                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5922                                         opcode = OP_LMIN_UN;
5923                         } else if (strcmp (cmethod->name, "Max") == 0) {
5924                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5925                                         opcode = OP_IMAX;
5926                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5927                                         opcode = OP_IMAX_UN;
5928                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5929                                         opcode = OP_LMAX;
5930                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5931                                         opcode = OP_LMAX_UN;
5932                         }
5933                 }
5934
5935                 if (opcode && fsig->param_count == 2) {
5936                         MONO_INST_NEW (cfg, ins, opcode);
5937                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5938                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5939                         ins->sreg1 = args [0]->dreg;
5940                         ins->sreg2 = args [1]->dreg;
5941                         MONO_ADD_INS (cfg->cbb, ins);
5942                 }
5943         }
5944
5945         return ins;
5946 }
5947
5948 static MonoInst*
5949 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5950 {
5951         if (cmethod->klass == mono_defaults.array_class) {
5952                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5953                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5954                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5955                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5956                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5957                         return emit_array_unsafe_mov (cfg, fsig, args);
5958         }
5959
5960         return NULL;
5961 }
5962
5963 static MonoInst*
5964 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5965 {
5966         MonoInst *ins = NULL;
5967
5968          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5969
5970         if (cmethod->klass == mono_defaults.string_class) {
5971                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5972                         int dreg = alloc_ireg (cfg);
5973                         int index_reg = alloc_preg (cfg);
5974                         int add_reg = alloc_preg (cfg);
5975
5976 #if SIZEOF_REGISTER == 8
5977                         if (COMPILE_LLVM (cfg)) {
5978                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5979                         } else {
5980                                 /* The array reg is 64 bits but the index reg is only 32 */
5981                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5982                         }
5983 #else
5984                         index_reg = args [1]->dreg;
5985 #endif
5986                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5987
5988 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5989                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5990                         add_reg = ins->dreg;
5991                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5992                                                                    add_reg, 0);
5993 #else
5994                         int mult_reg = alloc_preg (cfg);
5995                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5996                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5997                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5998                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5999 #endif
6000                         type_from_op (cfg, ins, NULL, NULL);
6001                         return ins;
6002                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6003                         int dreg = alloc_ireg (cfg);
6004                         /* Decompose later to allow more optimizations */
6005                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6006                         ins->type = STACK_I4;
6007                         ins->flags |= MONO_INST_FAULT;
6008                         cfg->cbb->has_array_access = TRUE;
6009                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6010
6011                         return ins;
6012                 } else
6013                         return NULL;
6014         } else if (cmethod->klass == mono_defaults.object_class) {
6015                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6016                         int dreg = alloc_ireg_ref (cfg);
6017                         int vt_reg = alloc_preg (cfg);
6018                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6019                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6020                         type_from_op (cfg, ins, NULL, NULL);
6021
6022                         return ins;
6023                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6024                         int dreg = alloc_ireg (cfg);
6025                         int t1 = alloc_ireg (cfg);
6026
6027                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6028                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6029                         ins->type = STACK_I4;
6030
6031                         return ins;
6032                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6033                         MONO_INST_NEW (cfg, ins, OP_NOP);
6034                         MONO_ADD_INS (cfg->cbb, ins);
6035                         return ins;
6036                 } else
6037                         return NULL;
6038         } else if (cmethod->klass == mono_defaults.array_class) {
6039                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6040                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6041                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6042                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6043
6044 #ifndef MONO_BIG_ARRAYS
6045                 /*
6046                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6047                  * Array methods.
6048                  */
6049                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6050                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6051                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6052                         int dreg = alloc_ireg (cfg);
6053                         int bounds_reg = alloc_ireg_mp (cfg);
6054                         MonoBasicBlock *end_bb, *szarray_bb;
6055                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6056
6057                         NEW_BBLOCK (cfg, end_bb);
6058                         NEW_BBLOCK (cfg, szarray_bb);
6059
6060                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6061                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6062                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6063                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6064                         /* Non-szarray case */
6065                         if (get_length)
6066                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6067                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6068                         else
6069                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6070                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6071                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6072                         MONO_START_BB (cfg, szarray_bb);
6073                         /* Szarray case */
6074                         if (get_length)
6075                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6076                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6077                         else
6078                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6079                         MONO_START_BB (cfg, end_bb);
6080
6081                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6082                         ins->type = STACK_I4;
6083
6084                         return ins;
6085                 }
6086 #endif
6087
6088                 if (cmethod->name [0] != 'g')
6089                         return NULL;
6090
6091                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6092                         int dreg = alloc_ireg (cfg);
6093                         int vtable_reg = alloc_preg (cfg);
6094                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6095                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6096                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6097                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6098                         type_from_op (cfg, ins, NULL, NULL);
6099
6100                         return ins;
6101                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6102                         int dreg = alloc_ireg (cfg);
6103
6104                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6105                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6106                         type_from_op (cfg, ins, NULL, NULL);
6107
6108                         return ins;
6109                 } else
6110                         return NULL;
6111         } else if (cmethod->klass == runtime_helpers_class) {
6112                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6113                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6114                         return ins;
6115                 } else
6116                         return NULL;
6117         } else if (cmethod->klass == mono_defaults.monitor_class) {
6118                 gboolean is_enter = FALSE;
6119
6120                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6121                         is_enter = TRUE;
6122
6123                 if (is_enter) {
6124                         /*
6125                          * To make async stack traces work, icalls which can block should have a wrapper.
6126                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6127                          */
6128                         MonoBasicBlock *end_bb;
6129
6130                         NEW_BBLOCK (cfg, end_bb);
6131
6132                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6133                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6134                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6135                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6136                         MONO_START_BB (cfg, end_bb);
6137                         return ins;
6138                 }
6139         } else if (cmethod->klass == mono_defaults.thread_class) {
6140                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6141                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6142                         MONO_ADD_INS (cfg->cbb, ins);
6143                         return ins;
6144                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6145                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6146                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6147                         guint32 opcode = 0;
6148                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6149
6150                         if (fsig->params [0]->type == MONO_TYPE_I1)
6151                                 opcode = OP_LOADI1_MEMBASE;
6152                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6153                                 opcode = OP_LOADU1_MEMBASE;
6154                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6155                                 opcode = OP_LOADI2_MEMBASE;
6156                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6157                                 opcode = OP_LOADU2_MEMBASE;
6158                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6159                                 opcode = OP_LOADI4_MEMBASE;
6160                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6161                                 opcode = OP_LOADU4_MEMBASE;
6162                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6163                                 opcode = OP_LOADI8_MEMBASE;
6164                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6165                                 opcode = OP_LOADR4_MEMBASE;
6166                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6167                                 opcode = OP_LOADR8_MEMBASE;
6168                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6169                                 opcode = OP_LOAD_MEMBASE;
6170
6171                         if (opcode) {
6172                                 MONO_INST_NEW (cfg, ins, opcode);
6173                                 ins->inst_basereg = args [0]->dreg;
6174                                 ins->inst_offset = 0;
6175                                 MONO_ADD_INS (cfg->cbb, ins);
6176
6177                                 switch (fsig->params [0]->type) {
6178                                 case MONO_TYPE_I1:
6179                                 case MONO_TYPE_U1:
6180                                 case MONO_TYPE_I2:
6181                                 case MONO_TYPE_U2:
6182                                 case MONO_TYPE_I4:
6183                                 case MONO_TYPE_U4:
6184                                         ins->dreg = mono_alloc_ireg (cfg);
6185                                         ins->type = STACK_I4;
6186                                         break;
6187                                 case MONO_TYPE_I8:
6188                                 case MONO_TYPE_U8:
6189                                         ins->dreg = mono_alloc_lreg (cfg);
6190                                         ins->type = STACK_I8;
6191                                         break;
6192                                 case MONO_TYPE_I:
6193                                 case MONO_TYPE_U:
6194                                         ins->dreg = mono_alloc_ireg (cfg);
6195 #if SIZEOF_REGISTER == 8
6196                                         ins->type = STACK_I8;
6197 #else
6198                                         ins->type = STACK_I4;
6199 #endif
6200                                         break;
6201                                 case MONO_TYPE_R4:
6202                                 case MONO_TYPE_R8:
6203                                         ins->dreg = mono_alloc_freg (cfg);
6204                                         ins->type = STACK_R8;
6205                                         break;
6206                                 default:
6207                                         g_assert (mini_type_is_reference (fsig->params [0]));
6208                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6209                                         ins->type = STACK_OBJ;
6210                                         break;
6211                                 }
6212
6213                                 if (opcode == OP_LOADI8_MEMBASE)
6214                                         ins = mono_decompose_opcode (cfg, ins);
6215
6216                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6217
6218                                 return ins;
6219                         }
6220                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6221                         guint32 opcode = 0;
6222                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6223
6224                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6225                                 opcode = OP_STOREI1_MEMBASE_REG;
6226                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6227                                 opcode = OP_STOREI2_MEMBASE_REG;
6228                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6229                                 opcode = OP_STOREI4_MEMBASE_REG;
6230                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6231                                 opcode = OP_STOREI8_MEMBASE_REG;
6232                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6233                                 opcode = OP_STORER4_MEMBASE_REG;
6234                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6235                                 opcode = OP_STORER8_MEMBASE_REG;
6236                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6237                                 opcode = OP_STORE_MEMBASE_REG;
6238
6239                         if (opcode) {
6240                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6241
6242                                 MONO_INST_NEW (cfg, ins, opcode);
6243                                 ins->sreg1 = args [1]->dreg;
6244                                 ins->inst_destbasereg = args [0]->dreg;
6245                                 ins->inst_offset = 0;
6246                                 MONO_ADD_INS (cfg->cbb, ins);
6247
6248                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6249                                         ins = mono_decompose_opcode (cfg, ins);
6250
6251                                 return ins;
6252                         }
6253                 }
6254         } else if (cmethod->klass->image == mono_defaults.corlib &&
6255                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6256                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6257                 ins = NULL;
6258
6259 #if SIZEOF_REGISTER == 8
6260                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6261                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6262                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6263                                 ins->dreg = mono_alloc_preg (cfg);
6264                                 ins->sreg1 = args [0]->dreg;
6265                                 ins->type = STACK_I8;
6266                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6267                                 MONO_ADD_INS (cfg->cbb, ins);
6268                         } else {
6269                                 MonoInst *load_ins;
6270
6271                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6272
6273                                 /* 64 bit reads are already atomic */
6274                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6275                                 load_ins->dreg = mono_alloc_preg (cfg);
6276                                 load_ins->inst_basereg = args [0]->dreg;
6277                                 load_ins->inst_offset = 0;
6278                                 load_ins->type = STACK_I8;
6279                                 MONO_ADD_INS (cfg->cbb, load_ins);
6280
6281                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6282
6283                                 ins = load_ins;
6284                         }
6285                 }
6286 #endif
6287
6288                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6289                         MonoInst *ins_iconst;
6290                         guint32 opcode = 0;
6291
6292                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6293                                 opcode = OP_ATOMIC_ADD_I4;
6294                                 cfg->has_atomic_add_i4 = TRUE;
6295                         }
6296 #if SIZEOF_REGISTER == 8
6297                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6298                                 opcode = OP_ATOMIC_ADD_I8;
6299 #endif
6300                         if (opcode) {
6301                                 if (!mono_arch_opcode_supported (opcode))
6302                                         return NULL;
6303                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6304                                 ins_iconst->inst_c0 = 1;
6305                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6306                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6307
6308                                 MONO_INST_NEW (cfg, ins, opcode);
6309                                 ins->dreg = mono_alloc_ireg (cfg);
6310                                 ins->inst_basereg = args [0]->dreg;
6311                                 ins->inst_offset = 0;
6312                                 ins->sreg2 = ins_iconst->dreg;
6313                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6314                                 MONO_ADD_INS (cfg->cbb, ins);
6315                         }
6316                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6317                         MonoInst *ins_iconst;
6318                         guint32 opcode = 0;
6319
6320                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6321                                 opcode = OP_ATOMIC_ADD_I4;
6322                                 cfg->has_atomic_add_i4 = TRUE;
6323                         }
6324 #if SIZEOF_REGISTER == 8
6325                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6326                                 opcode = OP_ATOMIC_ADD_I8;
6327 #endif
6328                         if (opcode) {
6329                                 if (!mono_arch_opcode_supported (opcode))
6330                                         return NULL;
6331                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6332                                 ins_iconst->inst_c0 = -1;
6333                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6334                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6335
6336                                 MONO_INST_NEW (cfg, ins, opcode);
6337                                 ins->dreg = mono_alloc_ireg (cfg);
6338                                 ins->inst_basereg = args [0]->dreg;
6339                                 ins->inst_offset = 0;
6340                                 ins->sreg2 = ins_iconst->dreg;
6341                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6342                                 MONO_ADD_INS (cfg->cbb, ins);
6343                         }
6344                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6345                         guint32 opcode = 0;
6346
6347                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6348                                 opcode = OP_ATOMIC_ADD_I4;
6349                                 cfg->has_atomic_add_i4 = TRUE;
6350                         }
6351 #if SIZEOF_REGISTER == 8
6352                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6353                                 opcode = OP_ATOMIC_ADD_I8;
6354 #endif
6355                         if (opcode) {
6356                                 if (!mono_arch_opcode_supported (opcode))
6357                                         return NULL;
6358                                 MONO_INST_NEW (cfg, ins, opcode);
6359                                 ins->dreg = mono_alloc_ireg (cfg);
6360                                 ins->inst_basereg = args [0]->dreg;
6361                                 ins->inst_offset = 0;
6362                                 ins->sreg2 = args [1]->dreg;
6363                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6364                                 MONO_ADD_INS (cfg->cbb, ins);
6365                         }
6366                 }
6367                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6368                         MonoInst *f2i = NULL, *i2f;
6369                         guint32 opcode, f2i_opcode, i2f_opcode;
6370                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6371                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6372
6373                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6374                             fsig->params [0]->type == MONO_TYPE_R4) {
6375                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6376                                 f2i_opcode = OP_MOVE_F_TO_I4;
6377                                 i2f_opcode = OP_MOVE_I4_TO_F;
6378                                 cfg->has_atomic_exchange_i4 = TRUE;
6379                         }
6380 #if SIZEOF_REGISTER == 8
6381                         else if (is_ref ||
6382                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6383                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6384                                  fsig->params [0]->type == MONO_TYPE_I) {
6385                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6386                                 f2i_opcode = OP_MOVE_F_TO_I8;
6387                                 i2f_opcode = OP_MOVE_I8_TO_F;
6388                         }
6389 #else
6390                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6391                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6392                                 cfg->has_atomic_exchange_i4 = TRUE;
6393                         }
6394 #endif
6395                         else
6396                                 return NULL;
6397
6398                         if (!mono_arch_opcode_supported (opcode))
6399                                 return NULL;
6400
6401                         if (is_float) {
6402                                 /* TODO: Decompose these opcodes instead of bailing here. */
6403                                 if (COMPILE_SOFT_FLOAT (cfg))
6404                                         return NULL;
6405
6406                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6407                                 f2i->dreg = mono_alloc_ireg (cfg);
6408                                 f2i->sreg1 = args [1]->dreg;
6409                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6410                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6411                                 MONO_ADD_INS (cfg->cbb, f2i);
6412                         }
6413
6414                         MONO_INST_NEW (cfg, ins, opcode);
6415                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6416                         ins->inst_basereg = args [0]->dreg;
6417                         ins->inst_offset = 0;
6418                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6419                         MONO_ADD_INS (cfg->cbb, ins);
6420
6421                         switch (fsig->params [0]->type) {
6422                         case MONO_TYPE_I4:
6423                                 ins->type = STACK_I4;
6424                                 break;
6425                         case MONO_TYPE_I8:
6426                                 ins->type = STACK_I8;
6427                                 break;
6428                         case MONO_TYPE_I:
6429 #if SIZEOF_REGISTER == 8
6430                                 ins->type = STACK_I8;
6431 #else
6432                                 ins->type = STACK_I4;
6433 #endif
6434                                 break;
6435                         case MONO_TYPE_R4:
6436                         case MONO_TYPE_R8:
6437                                 ins->type = STACK_R8;
6438                                 break;
6439                         default:
6440                                 g_assert (mini_type_is_reference (fsig->params [0]));
6441                                 ins->type = STACK_OBJ;
6442                                 break;
6443                         }
6444
6445                         if (is_float) {
6446                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6447                                 i2f->dreg = mono_alloc_freg (cfg);
6448                                 i2f->sreg1 = ins->dreg;
6449                                 i2f->type = STACK_R8;
6450                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6451                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6452                                 MONO_ADD_INS (cfg->cbb, i2f);
6453
6454                                 ins = i2f;
6455                         }
6456
6457                         if (cfg->gen_write_barriers && is_ref)
6458                                 emit_write_barrier (cfg, args [0], args [1]);
6459                 }
6460                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6461                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6462                         guint32 opcode, f2i_opcode, i2f_opcode;
6463                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6464                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6465
6466                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6467                             fsig->params [1]->type == MONO_TYPE_R4) {
6468                                 opcode = OP_ATOMIC_CAS_I4;
6469                                 f2i_opcode = OP_MOVE_F_TO_I4;
6470                                 i2f_opcode = OP_MOVE_I4_TO_F;
6471                                 cfg->has_atomic_cas_i4 = TRUE;
6472                         }
6473 #if SIZEOF_REGISTER == 8
6474                         else if (is_ref ||
6475                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6476                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6477                                  fsig->params [1]->type == MONO_TYPE_I) {
6478                                 opcode = OP_ATOMIC_CAS_I8;
6479                                 f2i_opcode = OP_MOVE_F_TO_I8;
6480                                 i2f_opcode = OP_MOVE_I8_TO_F;
6481                         }
6482 #else
6483                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6484                                 opcode = OP_ATOMIC_CAS_I4;
6485                                 cfg->has_atomic_cas_i4 = TRUE;
6486                         }
6487 #endif
6488                         else
6489                                 return NULL;
6490
6491                         if (!mono_arch_opcode_supported (opcode))
6492                                 return NULL;
6493
6494                         if (is_float) {
6495                                 /* TODO: Decompose these opcodes instead of bailing here. */
6496                                 if (COMPILE_SOFT_FLOAT (cfg))
6497                                         return NULL;
6498
6499                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6500                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6501                                 f2i_new->sreg1 = args [1]->dreg;
6502                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6503                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6504                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6505
6506                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6507                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6508                                 f2i_cmp->sreg1 = args [2]->dreg;
6509                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6510                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6511                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6512                         }
6513
6514                         MONO_INST_NEW (cfg, ins, opcode);
6515                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6516                         ins->sreg1 = args [0]->dreg;
6517                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6518                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6519                         MONO_ADD_INS (cfg->cbb, ins);
6520
6521                         switch (fsig->params [1]->type) {
6522                         case MONO_TYPE_I4:
6523                                 ins->type = STACK_I4;
6524                                 break;
6525                         case MONO_TYPE_I8:
6526                                 ins->type = STACK_I8;
6527                                 break;
6528                         case MONO_TYPE_I:
6529 #if SIZEOF_REGISTER == 8
6530                                 ins->type = STACK_I8;
6531 #else
6532                                 ins->type = STACK_I4;
6533 #endif
6534                                 break;
6535                         case MONO_TYPE_R4:
6536                                 ins->type = cfg->r4_stack_type;
6537                                 break;
6538                         case MONO_TYPE_R8:
6539                                 ins->type = STACK_R8;
6540                                 break;
6541                         default:
6542                                 g_assert (mini_type_is_reference (fsig->params [1]));
6543                                 ins->type = STACK_OBJ;
6544                                 break;
6545                         }
6546
6547                         if (is_float) {
6548                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6549                                 i2f->dreg = mono_alloc_freg (cfg);
6550                                 i2f->sreg1 = ins->dreg;
6551                                 i2f->type = STACK_R8;
6552                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6553                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6554                                 MONO_ADD_INS (cfg->cbb, i2f);
6555
6556                                 ins = i2f;
6557                         }
6558
6559                         if (cfg->gen_write_barriers && is_ref)
6560                                 emit_write_barrier (cfg, args [0], args [1]);
6561                 }
6562                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6563                          fsig->params [1]->type == MONO_TYPE_I4) {
6564                         MonoInst *cmp, *ceq;
6565
6566                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6567                                 return NULL;
6568
6569                         /* int32 r = CAS (location, value, comparand); */
6570                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6571                         ins->dreg = alloc_ireg (cfg);
6572                         ins->sreg1 = args [0]->dreg;
6573                         ins->sreg2 = args [1]->dreg;
6574                         ins->sreg3 = args [2]->dreg;
6575                         ins->type = STACK_I4;
6576                         MONO_ADD_INS (cfg->cbb, ins);
6577
6578                         /* bool result = r == comparand; */
6579                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6580                         cmp->sreg1 = ins->dreg;
6581                         cmp->sreg2 = args [2]->dreg;
6582                         cmp->type = STACK_I4;
6583                         MONO_ADD_INS (cfg->cbb, cmp);
6584
6585                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6586                         ceq->dreg = alloc_ireg (cfg);
6587                         ceq->type = STACK_I4;
6588                         MONO_ADD_INS (cfg->cbb, ceq);
6589
6590                         /* *success = result; */
6591                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6592
6593                         cfg->has_atomic_cas_i4 = TRUE;
6594                 }
6595                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6596                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6597
6598                 if (ins)
6599                         return ins;
6600         } else if (cmethod->klass->image == mono_defaults.corlib &&
6601                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6602                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6603                 ins = NULL;
6604
6605                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6606                         guint32 opcode = 0;
6607                         MonoType *t = fsig->params [0];
6608                         gboolean is_ref;
6609                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6610
6611                         g_assert (t->byref);
6612                         /* t is a byref type, so the reference check is more complicated */
6613                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6614                         if (t->type == MONO_TYPE_I1)
6615                                 opcode = OP_ATOMIC_LOAD_I1;
6616                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6617                                 opcode = OP_ATOMIC_LOAD_U1;
6618                         else if (t->type == MONO_TYPE_I2)
6619                                 opcode = OP_ATOMIC_LOAD_I2;
6620                         else if (t->type == MONO_TYPE_U2)
6621                                 opcode = OP_ATOMIC_LOAD_U2;
6622                         else if (t->type == MONO_TYPE_I4)
6623                                 opcode = OP_ATOMIC_LOAD_I4;
6624                         else if (t->type == MONO_TYPE_U4)
6625                                 opcode = OP_ATOMIC_LOAD_U4;
6626                         else if (t->type == MONO_TYPE_R4)
6627                                 opcode = OP_ATOMIC_LOAD_R4;
6628                         else if (t->type == MONO_TYPE_R8)
6629                                 opcode = OP_ATOMIC_LOAD_R8;
6630 #if SIZEOF_REGISTER == 8
6631                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6632                                 opcode = OP_ATOMIC_LOAD_I8;
6633                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6634                                 opcode = OP_ATOMIC_LOAD_U8;
6635 #else
6636                         else if (t->type == MONO_TYPE_I)
6637                                 opcode = OP_ATOMIC_LOAD_I4;
6638                         else if (is_ref || t->type == MONO_TYPE_U)
6639                                 opcode = OP_ATOMIC_LOAD_U4;
6640 #endif
6641
6642                         if (opcode) {
6643                                 if (!mono_arch_opcode_supported (opcode))
6644                                         return NULL;
6645
6646                                 MONO_INST_NEW (cfg, ins, opcode);
6647                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6648                                 ins->sreg1 = args [0]->dreg;
6649                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6650                                 MONO_ADD_INS (cfg->cbb, ins);
6651
6652                                 switch (t->type) {
6653                                 case MONO_TYPE_BOOLEAN:
6654                                 case MONO_TYPE_I1:
6655                                 case MONO_TYPE_U1:
6656                                 case MONO_TYPE_I2:
6657                                 case MONO_TYPE_U2:
6658                                 case MONO_TYPE_I4:
6659                                 case MONO_TYPE_U4:
6660                                         ins->type = STACK_I4;
6661                                         break;
6662                                 case MONO_TYPE_I8:
6663                                 case MONO_TYPE_U8:
6664                                         ins->type = STACK_I8;
6665                                         break;
6666                                 case MONO_TYPE_I:
6667                                 case MONO_TYPE_U:
6668 #if SIZEOF_REGISTER == 8
6669                                         ins->type = STACK_I8;
6670 #else
6671                                         ins->type = STACK_I4;
6672 #endif
6673                                         break;
6674                                 case MONO_TYPE_R4:
6675                                         ins->type = cfg->r4_stack_type;
6676                                         break;
6677                                 case MONO_TYPE_R8:
6678                                         ins->type = STACK_R8;
6679                                         break;
6680                                 default:
6681                                         g_assert (is_ref);
6682                                         ins->type = STACK_OBJ;
6683                                         break;
6684                                 }
6685                         }
6686                 }
6687
6688                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6689                         guint32 opcode = 0;
6690                         MonoType *t = fsig->params [0];
6691                         gboolean is_ref;
6692
6693                         g_assert (t->byref);
6694                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6695                         if (t->type == MONO_TYPE_I1)
6696                                 opcode = OP_ATOMIC_STORE_I1;
6697                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6698                                 opcode = OP_ATOMIC_STORE_U1;
6699                         else if (t->type == MONO_TYPE_I2)
6700                                 opcode = OP_ATOMIC_STORE_I2;
6701                         else if (t->type == MONO_TYPE_U2)
6702                                 opcode = OP_ATOMIC_STORE_U2;
6703                         else if (t->type == MONO_TYPE_I4)
6704                                 opcode = OP_ATOMIC_STORE_I4;
6705                         else if (t->type == MONO_TYPE_U4)
6706                                 opcode = OP_ATOMIC_STORE_U4;
6707                         else if (t->type == MONO_TYPE_R4)
6708                                 opcode = OP_ATOMIC_STORE_R4;
6709                         else if (t->type == MONO_TYPE_R8)
6710                                 opcode = OP_ATOMIC_STORE_R8;
6711 #if SIZEOF_REGISTER == 8
6712                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6713                                 opcode = OP_ATOMIC_STORE_I8;
6714                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6715                                 opcode = OP_ATOMIC_STORE_U8;
6716 #else
6717                         else if (t->type == MONO_TYPE_I)
6718                                 opcode = OP_ATOMIC_STORE_I4;
6719                         else if (is_ref || t->type == MONO_TYPE_U)
6720                                 opcode = OP_ATOMIC_STORE_U4;
6721 #endif
6722
6723                         if (opcode) {
6724                                 if (!mono_arch_opcode_supported (opcode))
6725                                         return NULL;
6726
6727                                 MONO_INST_NEW (cfg, ins, opcode);
6728                                 ins->dreg = args [0]->dreg;
6729                                 ins->sreg1 = args [1]->dreg;
6730                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6731                                 MONO_ADD_INS (cfg->cbb, ins);
6732
6733                                 if (cfg->gen_write_barriers && is_ref)
6734                                         emit_write_barrier (cfg, args [0], args [1]);
6735                         }
6736                 }
6737
6738                 if (ins)
6739                         return ins;
6740         } else if (cmethod->klass->image == mono_defaults.corlib &&
6741                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6742                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6743                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6744                         if (should_insert_brekpoint (cfg->method)) {
6745                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6746                         } else {
6747                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6748                                 MONO_ADD_INS (cfg->cbb, ins);
6749                         }
6750                         return ins;
6751                 }
6752         } else if (cmethod->klass->image == mono_defaults.corlib &&
6753                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6754                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6755                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6756 #ifdef TARGET_WIN32
6757                         EMIT_NEW_ICONST (cfg, ins, 1);
6758 #else
6759                         EMIT_NEW_ICONST (cfg, ins, 0);
6760 #endif
6761                 }
6762         } else if (cmethod->klass->image == mono_defaults.corlib &&
6763                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6764                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6765                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6766                         /* No stack walks are currently available, so implement this as an intrinsic */
6767                         MonoInst *assembly_ins;
6768
6769                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6770                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6771                         return ins;
6772                 }
6773         } else if (cmethod->klass->image == mono_defaults.corlib &&
6774                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6775                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6776                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6777                         /* No stack walks are currently available, so implement this as an intrinsic */
6778                         MonoInst *method_ins;
6779                         MonoMethod *declaring = cfg->method;
6780
6781                         /* This returns the declaring generic method */
6782                         if (declaring->is_inflated)
6783                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6784                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6785                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6786                         cfg->no_inline = TRUE;
6787                         if (cfg->method != cfg->current_method)
6788                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6789                         return ins;
6790                 }
6791         } else if (cmethod->klass == mono_defaults.math_class) {
6792                 /*
6793                  * There is general branchless code for Min/Max, but it does not work for
6794                  * all inputs:
6795                  * http://everything2.com/?node_id=1051618
6796                  */
6797         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6798                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6799                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6800                                 !strcmp (cmethod->klass->name, "Selector")) ||
6801                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6802                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6803                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6804                                 !strcmp (cmethod->klass->name, "Selector"))
6805                            ) {
6806                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6807                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6808                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6809                     cfg->compile_aot) {
6810                         MonoInst *pi;
6811                         MonoJumpInfoToken *ji;
6812                         char *s;
6813
6814                         if (args [0]->opcode == OP_GOT_ENTRY) {
6815                                 pi = (MonoInst *)args [0]->inst_p1;
6816                                 g_assert (pi->opcode == OP_PATCH_INFO);
6817                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6818                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6819                         } else {
6820                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6821                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6822                         }
6823
6824                         NULLIFY_INS (args [0]);
6825
6826                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6827                         return_val_if_nok (&cfg->error, NULL);
6828
6829                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6830                         ins->dreg = mono_alloc_ireg (cfg);
6831                         // FIXME: Leaks
6832                         ins->inst_p0 = s;
6833                         MONO_ADD_INS (cfg->cbb, ins);
6834                         return ins;
6835                 }
6836         }
6837
6838 #ifdef MONO_ARCH_SIMD_INTRINSICS
6839         if (cfg->opt & MONO_OPT_SIMD) {
6840                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6841                 if (ins)
6842                         return ins;
6843         }
6844 #endif
6845
6846         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6847         if (ins)
6848                 return ins;
6849
6850         if (COMPILE_LLVM (cfg)) {
6851                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6852                 if (ins)
6853                         return ins;
6854         }
6855
6856         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6857 }
6858
6859 /*
6860  * This entry point could be used later for arbitrary method
6861  * redirection.
6862  */
6863 inline static MonoInst*
6864 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6865                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6866 {
6867         if (method->klass == mono_defaults.string_class) {
6868                 /* managed string allocation support */
6869                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6870                         MonoInst *iargs [2];
6871                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6872                         MonoMethod *managed_alloc = NULL;
6873
6874                         g_assert (vtable); /*Should not fail since it System.String*/
6875 #ifndef MONO_CROSS_COMPILE
6876                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6877 #endif
6878                         if (!managed_alloc)
6879                                 return NULL;
6880                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6881                         iargs [1] = args [0];
6882                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6883                 }
6884         }
6885         return NULL;
6886 }
6887
6888 static void
6889 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6890 {
6891         MonoInst *store, *temp;
6892         int i;
6893
6894         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6895                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6896
6897                 /*
6898                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6899                  * would be different than the MonoInst's used to represent arguments, and
6900                  * the ldelema implementation can't deal with that.
6901                  * Solution: When ldelema is used on an inline argument, create a var for
6902                  * it, emit ldelema on that var, and emit the saving code below in
6903                  * inline_method () if needed.
6904                  */
6905                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6906                 cfg->args [i] = temp;
6907                 /* This uses cfg->args [i] which is set by the preceeding line */
6908                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6909                 store->cil_code = sp [0]->cil_code;
6910                 sp++;
6911         }
6912 }
6913
6914 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6915 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6916
6917 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6918 static gboolean
6919 check_inline_called_method_name_limit (MonoMethod *called_method)
6920 {
6921         int strncmp_result;
6922         static const char *limit = NULL;
6923
6924         if (limit == NULL) {
6925                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6926
6927                 if (limit_string != NULL)
6928                         limit = limit_string;
6929                 else
6930                         limit = "";
6931         }
6932
6933         if (limit [0] != '\0') {
6934                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6935
6936                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6937                 g_free (called_method_name);
6938
6939                 //return (strncmp_result <= 0);
6940                 return (strncmp_result == 0);
6941         } else {
6942                 return TRUE;
6943         }
6944 }
6945 #endif
6946
6947 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6948 static gboolean
6949 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6950 {
6951         int strncmp_result;
6952         static const char *limit = NULL;
6953
6954         if (limit == NULL) {
6955                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6956                 if (limit_string != NULL) {
6957                         limit = limit_string;
6958                 } else {
6959                         limit = "";
6960                 }
6961         }
6962
6963         if (limit [0] != '\0') {
6964                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6965
6966                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6967                 g_free (caller_method_name);
6968
6969                 //return (strncmp_result <= 0);
6970                 return (strncmp_result == 0);
6971         } else {
6972                 return TRUE;
6973         }
6974 }
6975 #endif
6976
6977 static void
6978 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6979 {
6980         static double r8_0 = 0.0;
6981         static float r4_0 = 0.0;
6982         MonoInst *ins;
6983         int t;
6984
6985         rtype = mini_get_underlying_type (rtype);
6986         t = rtype->type;
6987
6988         if (rtype->byref) {
6989                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6990         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6991                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6992         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6993                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6994         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6995                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6996                 ins->type = STACK_R4;
6997                 ins->inst_p0 = (void*)&r4_0;
6998                 ins->dreg = dreg;
6999                 MONO_ADD_INS (cfg->cbb, ins);
7000         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7001                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7002                 ins->type = STACK_R8;
7003                 ins->inst_p0 = (void*)&r8_0;
7004                 ins->dreg = dreg;
7005                 MONO_ADD_INS (cfg->cbb, ins);
7006         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7007                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7008                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7009         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7010                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7011         } else {
7012                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7013         }
7014 }
7015
7016 static void
7017 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7018 {
7019         int t;
7020
7021         rtype = mini_get_underlying_type (rtype);
7022         t = rtype->type;
7023
7024         if (rtype->byref) {
7025                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7026         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7027                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7028         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7029                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7030         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7032         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7034         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7035                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7036                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7037         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7038                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7039         } else {
7040                 emit_init_rvar (cfg, dreg, rtype);
7041         }
7042 }
7043
7044 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7045 static void
7046 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7047 {
7048         MonoInst *var = cfg->locals [local];
7049         if (COMPILE_SOFT_FLOAT (cfg)) {
7050                 MonoInst *store;
7051                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7052                 emit_init_rvar (cfg, reg, type);
7053                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7054         } else {
7055                 if (init)
7056                         emit_init_rvar (cfg, var->dreg, type);
7057                 else
7058                         emit_dummy_init_rvar (cfg, var->dreg, type);
7059         }
7060 }
7061
7062 /*
7063  * inline_method:
7064  *
7065  *   Return the cost of inlining CMETHOD.
7066  */
7067 static int
7068 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7069                            guchar *ip, guint real_offset, gboolean inline_always)
7070 {
7071         MonoError error;
7072         MonoInst *ins, *rvar = NULL;
7073         MonoMethodHeader *cheader;
7074         MonoBasicBlock *ebblock, *sbblock;
7075         int i, costs;
7076         MonoMethod *prev_inlined_method;
7077         MonoInst **prev_locals, **prev_args;
7078         MonoType **prev_arg_types;
7079         guint prev_real_offset;
7080         GHashTable *prev_cbb_hash;
7081         MonoBasicBlock **prev_cil_offset_to_bb;
7082         MonoBasicBlock *prev_cbb;
7083         const unsigned char *prev_ip;
7084         unsigned char *prev_cil_start;
7085         guint32 prev_cil_offset_to_bb_len;
7086         MonoMethod *prev_current_method;
7087         MonoGenericContext *prev_generic_context;
7088         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7089
7090         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7091
7092 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7093         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7094                 return 0;
7095 #endif
7096 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7097         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7098                 return 0;
7099 #endif
7100
7101         if (!fsig)
7102                 fsig = mono_method_signature (cmethod);
7103
7104         if (cfg->verbose_level > 2)
7105                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7106
7107         if (!cmethod->inline_info) {
7108                 cfg->stat_inlineable_methods++;
7109                 cmethod->inline_info = 1;
7110         }
7111
7112         /* allocate local variables */
7113         cheader = mono_method_get_header_checked (cmethod, &error);
7114         if (!cheader) {
7115                 if (inline_always) {
7116                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7117                         mono_error_move (&cfg->error, &error);
7118                 } else {
7119                         mono_error_cleanup (&error);
7120                 }
7121                 return 0;
7122         }
7123
7124         /*Must verify before creating locals as it can cause the JIT to assert.*/
7125         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7126                 mono_metadata_free_mh (cheader);
7127                 return 0;
7128         }
7129
7130         /* allocate space to store the return value */
7131         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7132                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7133         }
7134
7135         prev_locals = cfg->locals;
7136         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7137         for (i = 0; i < cheader->num_locals; ++i)
7138                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7139
7140         /* allocate start and end blocks */
7141         /* This is needed so if the inline is aborted, we can clean up */
7142         NEW_BBLOCK (cfg, sbblock);
7143         sbblock->real_offset = real_offset;
7144
7145         NEW_BBLOCK (cfg, ebblock);
7146         ebblock->block_num = cfg->num_bblocks++;
7147         ebblock->real_offset = real_offset;
7148
7149         prev_args = cfg->args;
7150         prev_arg_types = cfg->arg_types;
7151         prev_inlined_method = cfg->inlined_method;
7152         cfg->inlined_method = cmethod;
7153         cfg->ret_var_set = FALSE;
7154         cfg->inline_depth ++;
7155         prev_real_offset = cfg->real_offset;
7156         prev_cbb_hash = cfg->cbb_hash;
7157         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7158         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7159         prev_cil_start = cfg->cil_start;
7160         prev_ip = cfg->ip;
7161         prev_cbb = cfg->cbb;
7162         prev_current_method = cfg->current_method;
7163         prev_generic_context = cfg->generic_context;
7164         prev_ret_var_set = cfg->ret_var_set;
7165         prev_disable_inline = cfg->disable_inline;
7166
7167         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7168                 virtual_ = TRUE;
7169
7170         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7171
7172         ret_var_set = cfg->ret_var_set;
7173
7174         cfg->inlined_method = prev_inlined_method;
7175         cfg->real_offset = prev_real_offset;
7176         cfg->cbb_hash = prev_cbb_hash;
7177         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7178         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7179         cfg->cil_start = prev_cil_start;
7180         cfg->ip = prev_ip;
7181         cfg->locals = prev_locals;
7182         cfg->args = prev_args;
7183         cfg->arg_types = prev_arg_types;
7184         cfg->current_method = prev_current_method;
7185         cfg->generic_context = prev_generic_context;
7186         cfg->ret_var_set = prev_ret_var_set;
7187         cfg->disable_inline = prev_disable_inline;
7188         cfg->inline_depth --;
7189
7190         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7191                 if (cfg->verbose_level > 2)
7192                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7193
7194                 cfg->stat_inlined_methods++;
7195
7196                 /* always add some code to avoid block split failures */
7197                 MONO_INST_NEW (cfg, ins, OP_NOP);
7198                 MONO_ADD_INS (prev_cbb, ins);
7199
7200                 prev_cbb->next_bb = sbblock;
7201                 link_bblock (cfg, prev_cbb, sbblock);
7202
7203                 /*
7204                  * Get rid of the begin and end bblocks if possible to aid local
7205                  * optimizations.
7206                  */
7207                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7208
7209                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7210                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7211
7212                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7213                         MonoBasicBlock *prev = ebblock->in_bb [0];
7214
7215                         if (prev->next_bb == ebblock) {
7216                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7217                                 cfg->cbb = prev;
7218                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7219                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7220                                         cfg->cbb = prev_cbb;
7221                                 }
7222                         } else {
7223                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7224                                 cfg->cbb = ebblock;
7225                         }
7226                 } else {
7227                         /*
7228                          * Its possible that the rvar is set in some prev bblock, but not in others.
7229                          * (#1835).
7230                          */
7231                         if (rvar) {
7232                                 MonoBasicBlock *bb;
7233
7234                                 for (i = 0; i < ebblock->in_count; ++i) {
7235                                         bb = ebblock->in_bb [i];
7236
7237                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7238                                                 cfg->cbb = bb;
7239
7240                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7241                                         }
7242                                 }
7243                         }
7244
7245                         cfg->cbb = ebblock;
7246                 }
7247
7248                 if (rvar) {
7249                         /*
7250                          * If the inlined method contains only a throw, then the ret var is not
7251                          * set, so set it to a dummy value.
7252                          */
7253                         if (!ret_var_set)
7254                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7255
7256                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7257                         *sp++ = ins;
7258                 }
7259                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7260                 return costs + 1;
7261         } else {
7262                 if (cfg->verbose_level > 2)
7263                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7264                 cfg->exception_type = MONO_EXCEPTION_NONE;
7265
7266                 /* This gets rid of the newly added bblocks */
7267                 cfg->cbb = prev_cbb;
7268         }
7269         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7270         return 0;
7271 }
7272
7273 /*
7274  * Some of these comments may well be out-of-date.
7275  * Design decisions: we do a single pass over the IL code (and we do bblock
7276  * splitting/merging in the few cases when it's required: a back jump to an IL
7277  * address that was not already seen as bblock starting point).
7278  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7279  * Complex operations are decomposed in simpler ones right away. We need to let the
7280  * arch-specific code peek and poke inside this process somehow (except when the
7281  * optimizations can take advantage of the full semantic info of coarse opcodes).
7282  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7283  * MonoInst->opcode initially is the IL opcode or some simplification of that
7284  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7285  * opcode with value bigger than OP_LAST.
7286  * At this point the IR can be handed over to an interpreter, a dumb code generator
7287  * or to the optimizing code generator that will translate it to SSA form.
7288  *
7289  * Profiling directed optimizations.
7290  * We may compile by default with few or no optimizations and instrument the code
7291  * or the user may indicate what methods to optimize the most either in a config file
7292  * or through repeated runs where the compiler applies offline the optimizations to
7293  * each method and then decides if it was worth it.
7294  */
7295
7296 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7297 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7298 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7299 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7300 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7301 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7302 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7303 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7304
7305 /* offset from br.s -> br like opcodes */
7306 #define BIG_BRANCH_OFFSET 13
7307
7308 static gboolean
7309 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7310 {
7311         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7312
7313         return b == NULL || b == bb;
7314 }
7315
7316 static int
7317 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7318 {
7319         unsigned char *ip = start;
7320         unsigned char *target;
7321         int i;
7322         guint cli_addr;
7323         MonoBasicBlock *bblock;
7324         const MonoOpcode *opcode;
7325
7326         while (ip < end) {
7327                 cli_addr = ip - start;
7328                 i = mono_opcode_value ((const guint8 **)&ip, end);
7329                 if (i < 0)
7330                         UNVERIFIED;
7331                 opcode = &mono_opcodes [i];
7332                 switch (opcode->argument) {
7333                 case MonoInlineNone:
7334                         ip++;
7335                         break;
7336                 case MonoInlineString:
7337                 case MonoInlineType:
7338                 case MonoInlineField:
7339                 case MonoInlineMethod:
7340                 case MonoInlineTok:
7341                 case MonoInlineSig:
7342                 case MonoShortInlineR:
7343                 case MonoInlineI:
7344                         ip += 5;
7345                         break;
7346                 case MonoInlineVar:
7347                         ip += 3;
7348                         break;
7349                 case MonoShortInlineVar:
7350                 case MonoShortInlineI:
7351                         ip += 2;
7352                         break;
7353                 case MonoShortInlineBrTarget:
7354                         target = start + cli_addr + 2 + (signed char)ip [1];
7355                         GET_BBLOCK (cfg, bblock, target);
7356                         ip += 2;
7357                         if (ip < end)
7358                                 GET_BBLOCK (cfg, bblock, ip);
7359                         break;
7360                 case MonoInlineBrTarget:
7361                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7362                         GET_BBLOCK (cfg, bblock, target);
7363                         ip += 5;
7364                         if (ip < end)
7365                                 GET_BBLOCK (cfg, bblock, ip);
7366                         break;
7367                 case MonoInlineSwitch: {
7368                         guint32 n = read32 (ip + 1);
7369                         guint32 j;
7370                         ip += 5;
7371                         cli_addr += 5 + 4 * n;
7372                         target = start + cli_addr;
7373                         GET_BBLOCK (cfg, bblock, target);
7374
7375                         for (j = 0; j < n; ++j) {
7376                                 target = start + cli_addr + (gint32)read32 (ip);
7377                                 GET_BBLOCK (cfg, bblock, target);
7378                                 ip += 4;
7379                         }
7380                         break;
7381                 }
7382                 case MonoInlineR:
7383                 case MonoInlineI8:
7384                         ip += 9;
7385                         break;
7386                 default:
7387                         g_assert_not_reached ();
7388                 }
7389
7390                 if (i == CEE_THROW) {
7391                         unsigned char *bb_start = ip - 1;
7392
7393                         /* Find the start of the bblock containing the throw */
7394                         bblock = NULL;
7395                         while ((bb_start >= start) && !bblock) {
7396                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7397                                 bb_start --;
7398                         }
7399                         if (bblock)
7400                                 bblock->out_of_line = 1;
7401                 }
7402         }
7403         return 0;
7404 unverified:
7405 exception_exit:
7406         *pos = ip;
7407         return 1;
7408 }
7409
7410 static inline MonoMethod *
7411 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7412 {
7413         MonoMethod *method;
7414
7415         mono_error_init (error);
7416
7417         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7418                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7419                 if (context) {
7420                         method = mono_class_inflate_generic_method_checked (method, context, error);
7421                 }
7422         } else {
7423                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7424         }
7425
7426         return method;
7427 }
7428
7429 static inline MonoMethod *
7430 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7431 {
7432         MonoError error;
7433         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7434
7435         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7436                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7437                 method = NULL;
7438         }
7439
7440         if (!method && !cfg)
7441                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7442
7443         return method;
7444 }
7445
7446 static inline MonoClass*
7447 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7448 {
7449         MonoError error;
7450         MonoClass *klass;
7451
7452         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7453                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7454                 if (context) {
7455                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7456                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7457                 }
7458         } else {
7459                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7460                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7461         }
7462         if (klass)
7463                 mono_class_init (klass);
7464         return klass;
7465 }
7466
7467 static inline MonoMethodSignature*
7468 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7469 {
7470         MonoMethodSignature *fsig;
7471
7472         mono_error_init (error);
7473         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7474                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7475         } else {
7476                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7477                 return_val_if_nok (error, NULL);
7478         }
7479         if (context) {
7480                 fsig = mono_inflate_generic_signature(fsig, context, error);
7481         }
7482         return fsig;
7483 }
7484
7485 static MonoMethod*
7486 throw_exception (void)
7487 {
7488         static MonoMethod *method = NULL;
7489
7490         if (!method) {
7491                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7492                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7493         }
7494         g_assert (method);
7495         return method;
7496 }
7497
7498 static void
7499 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7500 {
7501         MonoMethod *thrower = throw_exception ();
7502         MonoInst *args [1];
7503
7504         EMIT_NEW_PCONST (cfg, args [0], ex);
7505         mono_emit_method_call (cfg, thrower, args, NULL);
7506 }
7507
7508 /*
7509  * Return the original method is a wrapper is specified. We can only access
7510  * the custom attributes from the original method.
7511  */
7512 static MonoMethod*
7513 get_original_method (MonoMethod *method)
7514 {
7515         if (method->wrapper_type == MONO_WRAPPER_NONE)
7516                 return method;
7517
7518         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7519         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7520                 return NULL;
7521
7522         /* in other cases we need to find the original method */
7523         return mono_marshal_method_from_wrapper (method);
7524 }
7525
7526 static void
7527 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7528 {
7529         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7530         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7531         if (ex)
7532                 emit_throw_exception (cfg, ex);
7533 }
7534
7535 static void
7536 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7537 {
7538         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7539         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7540         if (ex)
7541                 emit_throw_exception (cfg, ex);
7542 }
7543
7544 /*
7545  * Check that the IL instructions at ip are the array initialization
7546  * sequence and return the pointer to the data and the size.
7547  */
7548 static const char*
7549 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7550 {
7551         /*
7552          * newarr[System.Int32]
7553          * dup
7554          * ldtoken field valuetype ...
7555          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7556          */
7557         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7558                 MonoError error;
7559                 guint32 token = read32 (ip + 7);
7560                 guint32 field_token = read32 (ip + 2);
7561                 guint32 field_index = field_token & 0xffffff;
7562                 guint32 rva;
7563                 const char *data_ptr;
7564                 int size = 0;
7565                 MonoMethod *cmethod;
7566                 MonoClass *dummy_class;
7567                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7568                 int dummy_align;
7569
7570                 if (!field) {
7571                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7572                         return NULL;
7573                 }
7574
7575                 *out_field_token = field_token;
7576
7577                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7578                 if (!cmethod)
7579                         return NULL;
7580                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7581                         return NULL;
7582                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7583                 case MONO_TYPE_BOOLEAN:
7584                 case MONO_TYPE_I1:
7585                 case MONO_TYPE_U1:
7586                         size = 1; break;
7587                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7588 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7589                 case MONO_TYPE_CHAR:
7590                 case MONO_TYPE_I2:
7591                 case MONO_TYPE_U2:
7592                         size = 2; break;
7593                 case MONO_TYPE_I4:
7594                 case MONO_TYPE_U4:
7595                 case MONO_TYPE_R4:
7596                         size = 4; break;
7597                 case MONO_TYPE_R8:
7598                 case MONO_TYPE_I8:
7599                 case MONO_TYPE_U8:
7600                         size = 8; break;
7601 #endif
7602                 default:
7603                         return NULL;
7604                 }
7605                 size *= len;
7606                 if (size > mono_type_size (field->type, &dummy_align))
7607                     return NULL;
7608                 *out_size = size;
7609                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7610                 if (!image_is_dynamic (method->klass->image)) {
7611                         field_index = read32 (ip + 2) & 0xffffff;
7612                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7613                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7614                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7615                         /* for aot code we do the lookup on load */
7616                         if (aot && data_ptr)
7617                                 return (const char *)GUINT_TO_POINTER (rva);
7618                 } else {
7619                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7620                         g_assert (!aot);
7621                         data_ptr = mono_field_get_data (field);
7622                 }
7623                 return data_ptr;
7624         }
7625         return NULL;
7626 }
7627
7628 static void
7629 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7630 {
7631         MonoError error;
7632         char *method_fname = mono_method_full_name (method, TRUE);
7633         char *method_code;
7634         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7635
7636         if (!header) {
7637                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7638                 mono_error_cleanup (&error);
7639         } else if (header->code_size == 0)
7640                 method_code = g_strdup ("method body is empty.");
7641         else
7642                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7643         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7644         g_free (method_fname);
7645         g_free (method_code);
7646         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7647 }
7648
7649 static void
7650 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7651 {
7652         MonoInst *ins;
7653         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7654         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7655                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7656                 /* Optimize reg-reg moves away */
7657                 /*
7658                  * Can't optimize other opcodes, since sp[0] might point to
7659                  * the last ins of a decomposed opcode.
7660                  */
7661                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7662         } else {
7663                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7664         }
7665 }
7666
7667 /*
7668  * ldloca inhibits many optimizations so try to get rid of it in common
7669  * cases.
7670  */
7671 static inline unsigned char *
7672 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7673 {
7674         int local, token;
7675         MonoClass *klass;
7676         MonoType *type;
7677
7678         if (size == 1) {
7679                 local = ip [1];
7680                 ip += 2;
7681         } else {
7682                 local = read16 (ip + 2);
7683                 ip += 4;
7684         }
7685
7686         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7687                 /* From the INITOBJ case */
7688                 token = read32 (ip + 2);
7689                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7690                 CHECK_TYPELOAD (klass);
7691                 type = mini_get_underlying_type (&klass->byval_arg);
7692                 emit_init_local (cfg, local, type, TRUE);
7693                 return ip + 6;
7694         }
7695  exception_exit:
7696         return NULL;
7697 }
7698
7699 static MonoInst*
7700 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7701 {
7702         MonoInst *icall_args [16];
7703         MonoInst *call_target, *ins, *vtable_ins;
7704         int arg_reg, this_reg, vtable_reg;
7705         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7706         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7707         gboolean variant_iface = FALSE;
7708         guint32 slot;
7709         int offset;
7710
7711         /*
7712          * In llvm-only mode, vtables contain function descriptors instead of
7713          * method addresses/trampolines.
7714          */
7715         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7716
7717         if (is_iface)
7718                 slot = mono_method_get_imt_slot (cmethod);
7719         else
7720                 slot = mono_method_get_vtable_index (cmethod);
7721
7722         this_reg = sp [0]->dreg;
7723
7724         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7725                 variant_iface = TRUE;
7726
7727         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7728                 /*
7729                  * The simplest case, a normal virtual call.
7730                  */
7731                 int slot_reg = alloc_preg (cfg);
7732                 int addr_reg = alloc_preg (cfg);
7733                 int arg_reg = alloc_preg (cfg);
7734                 MonoBasicBlock *non_null_bb;
7735
7736                 vtable_reg = alloc_preg (cfg);
7737                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7738                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7739
7740                 /* Load the vtable slot, which contains a function descriptor. */
7741                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7742
7743                 NEW_BBLOCK (cfg, non_null_bb);
7744
7745                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7746                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7747                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7748
7749                 /* Slow path */
7750                 // FIXME: Make the wrapper use the preserveall cconv
7751                 // FIXME: Use one icall per slot for small slot numbers ?
7752                 icall_args [0] = vtable_ins;
7753                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7754                 /* Make the icall return the vtable slot value to save some code space */
7755                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7756                 ins->dreg = slot_reg;
7757                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7758
7759                 /* Fastpath */
7760                 MONO_START_BB (cfg, non_null_bb);
7761                 /* Load the address + arg from the vtable slot */
7762                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7763                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7764
7765                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7766         }
7767
7768         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7769                 /*
7770                  * A simple interface call
7771                  *
7772                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7773                  * The imt slot contains a function descriptor for a runtime function + arg.
7774                  */
7775                 int slot_reg = alloc_preg (cfg);
7776                 int addr_reg = alloc_preg (cfg);
7777                 int arg_reg = alloc_preg (cfg);
7778                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7779
7780                 vtable_reg = alloc_preg (cfg);
7781                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7782                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7783
7784                 /*
7785                  * The slot is already initialized when the vtable is created so there is no need
7786                  * to check it here.
7787                  */
7788
7789                 /* Load the imt slot, which contains a function descriptor. */
7790                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7791
7792                 /* Load the address + arg of the imt thunk from the imt slot */
7793                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7794                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7795                 /*
7796                  * IMT thunks in llvm-only mode are C functions which take an info argument
7797                  * plus the imt method and return the ftndesc to call.
7798                  */
7799                 icall_args [0] = thunk_arg_ins;
7800                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7801                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7802                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7803
7804                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7805         }
7806
7807         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7808                 /*
7809                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7810                  * dynamically extended as more instantiations are discovered.
7811                  * This handles generic virtual methods both on classes and interfaces.
7812                  */
7813                 int slot_reg = alloc_preg (cfg);
7814                 int addr_reg = alloc_preg (cfg);
7815                 int arg_reg = alloc_preg (cfg);
7816                 int ftndesc_reg = alloc_preg (cfg);
7817                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7818                 MonoBasicBlock *slowpath_bb, *end_bb;
7819
7820                 NEW_BBLOCK (cfg, slowpath_bb);
7821                 NEW_BBLOCK (cfg, end_bb);
7822
7823                 vtable_reg = alloc_preg (cfg);
7824                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7825                 if (is_iface)
7826                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7827                 else
7828                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7829
7830                 /* Load the slot, which contains a function descriptor. */
7831                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7832
7833                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7834                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7835                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7836                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7837
7838                 /* Fastpath */
7839                 /* Same as with iface calls */
7840                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7841                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7842                 icall_args [0] = thunk_arg_ins;
7843                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7844                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7845                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7846                 ftndesc_ins->dreg = ftndesc_reg;
7847                 /*
7848                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7849                  * they don't know about yet. Fall back to the slowpath in that case.
7850                  */
7851                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7852                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7853
7854                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7855
7856                 /* Slowpath */
7857                 MONO_START_BB (cfg, slowpath_bb);
7858                 icall_args [0] = vtable_ins;
7859                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7860                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7861                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7862                 if (is_iface)
7863                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7864                 else
7865                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7866                 ftndesc_ins->dreg = ftndesc_reg;
7867                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7868
7869                 /* Common case */
7870                 MONO_START_BB (cfg, end_bb);
7871                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7872         }
7873
7874         /*
7875          * Non-optimized cases
7876          */
7877         icall_args [0] = sp [0];
7878         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7879
7880         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7881                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7882
7883         arg_reg = alloc_preg (cfg);
7884         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7885         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7886
7887         g_assert (is_gsharedvt);
7888         if (is_iface)
7889                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7890         else
7891                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7892
7893         /*
7894          * Pass the extra argument even if the callee doesn't receive it, most
7895          * calling conventions allow this.
7896          */
7897         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7898 }
7899
7900 static gboolean
7901 is_exception_class (MonoClass *klass)
7902 {
7903         while (klass) {
7904                 if (klass == mono_defaults.exception_class)
7905                         return TRUE;
7906                 klass = klass->parent;
7907         }
7908         return FALSE;
7909 }
7910
7911 /*
7912  * is_jit_optimizer_disabled:
7913  *
7914  *   Determine whenever M's assembly has a DebuggableAttribute with the
7915  * IsJITOptimizerDisabled flag set.
7916  */
7917 static gboolean
7918 is_jit_optimizer_disabled (MonoMethod *m)
7919 {
7920         MonoError error;
7921         MonoAssembly *ass = m->klass->image->assembly;
7922         MonoCustomAttrInfo* attrs;
7923         MonoClass *klass;
7924         int i;
7925         gboolean val = FALSE;
7926
7927         g_assert (ass);
7928         if (ass->jit_optimizer_disabled_inited)
7929                 return ass->jit_optimizer_disabled;
7930
7931         klass = mono_class_try_get_debuggable_attribute_class ();
7932
7933         if (!klass) {
7934                 /* Linked away */
7935                 ass->jit_optimizer_disabled = FALSE;
7936                 mono_memory_barrier ();
7937                 ass->jit_optimizer_disabled_inited = TRUE;
7938                 return FALSE;
7939         }
7940
7941         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7942         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7943         if (attrs) {
7944                 for (i = 0; i < attrs->num_attrs; ++i) {
7945                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7946                         const gchar *p;
7947                         MonoMethodSignature *sig;
7948
7949                         if (!attr->ctor || attr->ctor->klass != klass)
7950                                 continue;
7951                         /* Decode the attribute. See reflection.c */
7952                         p = (const char*)attr->data;
7953                         g_assert (read16 (p) == 0x0001);
7954                         p += 2;
7955
7956                         // FIXME: Support named parameters
7957                         sig = mono_method_signature (attr->ctor);
7958                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7959                                 continue;
7960                         /* Two boolean arguments */
7961                         p ++;
7962                         val = *p;
7963                 }
7964                 mono_custom_attrs_free (attrs);
7965         }
7966
7967         ass->jit_optimizer_disabled = val;
7968         mono_memory_barrier ();
7969         ass->jit_optimizer_disabled_inited = TRUE;
7970
7971         return val;
7972 }
7973
7974 static gboolean
7975 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7976 {
7977         gboolean supported_tail_call;
7978         int i;
7979
7980         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7981
7982         for (i = 0; i < fsig->param_count; ++i) {
7983                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7984                         /* These can point to the current method's stack */
7985                         supported_tail_call = FALSE;
7986         }
7987         if (fsig->hasthis && cmethod->klass->valuetype)
7988                 /* this might point to the current method's stack */
7989                 supported_tail_call = FALSE;
7990         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7991                 supported_tail_call = FALSE;
7992         if (cfg->method->save_lmf)
7993                 supported_tail_call = FALSE;
7994         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7995                 supported_tail_call = FALSE;
7996         if (call_opcode != CEE_CALL)
7997                 supported_tail_call = FALSE;
7998
7999         /* Debugging support */
8000 #if 0
8001         if (supported_tail_call) {
8002                 if (!mono_debug_count ())
8003                         supported_tail_call = FALSE;
8004         }
8005 #endif
8006
8007         return supported_tail_call;
8008 }
8009
8010 /*
8011  * handle_ctor_call:
8012  *
8013  *   Handle calls made to ctors from NEWOBJ opcodes.
8014  */
8015 static void
8016 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8017                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8018 {
8019         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8020
8021         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8022                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8023                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8024                         mono_class_vtable (cfg->domain, cmethod->klass);
8025                         CHECK_TYPELOAD (cmethod->klass);
8026
8027                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8028                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8029                 } else {
8030                         if (context_used) {
8031                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8032                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8033                         } else {
8034                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8035
8036                                 CHECK_TYPELOAD (cmethod->klass);
8037                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8038                         }
8039                 }
8040         }
8041
8042         /* Avoid virtual calls to ctors if possible */
8043         if (mono_class_is_marshalbyref (cmethod->klass))
8044                 callvirt_this_arg = sp [0];
8045
8046         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8047                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8048                 CHECK_CFG_EXCEPTION;
8049         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8050                            mono_method_check_inlining (cfg, cmethod) &&
8051                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8052                 int costs;
8053
8054                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8055                         cfg->real_offset += 5;
8056
8057                         *inline_costs += costs - 5;
8058                 } else {
8059                         INLINE_FAILURE ("inline failure");
8060                         // FIXME-VT: Clean this up
8061                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8062                                 GSHAREDVT_FAILURE(*ip);
8063                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8064                 }
8065         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8066                 MonoInst *addr;
8067
8068                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8069
8070                 if (cfg->llvm_only) {
8071                         // FIXME: Avoid initializing vtable_arg
8072                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8073                 } else {
8074                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8075                 }
8076         } else if (context_used &&
8077                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8078                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8079                 MonoInst *cmethod_addr;
8080
8081                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8082
8083                 if (cfg->llvm_only) {
8084                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8085                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8086                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8087                 } else {
8088                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8089                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8090
8091                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8092                 }
8093         } else {
8094                 INLINE_FAILURE ("ctor call");
8095                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8096                                                                                   callvirt_this_arg, NULL, vtable_arg);
8097         }
8098  exception_exit:
8099         return;
8100 }
8101
8102 static void
8103 emit_setret (MonoCompile *cfg, MonoInst *val)
8104 {
8105         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8106         MonoInst *ins;
8107
8108         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8109                 MonoInst *ret_addr;
8110
8111                 if (!cfg->vret_addr) {
8112                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8113                 } else {
8114                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8115
8116                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8117                         ins->klass = mono_class_from_mono_type (ret_type);
8118                 }
8119         } else {
8120 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8121                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8122                         MonoInst *iargs [1];
8123                         MonoInst *conv;
8124
8125                         iargs [0] = val;
8126                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8127                         mono_arch_emit_setret (cfg, cfg->method, conv);
8128                 } else {
8129                         mono_arch_emit_setret (cfg, cfg->method, val);
8130                 }
8131 #else
8132                 mono_arch_emit_setret (cfg, cfg->method, val);
8133 #endif
8134         }
8135 }
8136
8137 /*
8138  * mono_method_to_ir:
8139  *
8140  *   Translate the .net IL into linear IR.
8141  */
8142 int
8143 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8144                    MonoInst *return_var, MonoInst **inline_args,
8145                    guint inline_offset, gboolean is_virtual_call)
8146 {
8147         MonoError error;
8148         MonoInst *ins, **sp, **stack_start;
8149         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8150         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8151         MonoMethod *cmethod, *method_definition;
8152         MonoInst **arg_array;
8153         MonoMethodHeader *header;
8154         MonoImage *image;
8155         guint32 token, ins_flag;
8156         MonoClass *klass;
8157         MonoClass *constrained_class = NULL;
8158         unsigned char *ip, *end, *target, *err_pos;
8159         MonoMethodSignature *sig;
8160         MonoGenericContext *generic_context = NULL;
8161         MonoGenericContainer *generic_container = NULL;
8162         MonoType **param_types;
8163         int i, n, start_new_bblock, dreg;
8164         int num_calls = 0, inline_costs = 0;
8165         int breakpoint_id = 0;
8166         guint num_args;
8167         GSList *class_inits = NULL;
8168         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8169         int context_used;
8170         gboolean init_locals, seq_points, skip_dead_blocks;
8171         gboolean sym_seq_points = FALSE;
8172         MonoDebugMethodInfo *minfo;
8173         MonoBitSet *seq_point_locs = NULL;
8174         MonoBitSet *seq_point_set_locs = NULL;
8175
8176         cfg->disable_inline = is_jit_optimizer_disabled (method);
8177
8178         /* serialization and xdomain stuff may need access to private fields and methods */
8179         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8185
8186         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8187         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8188         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8191
8192         image = method->klass->image;
8193         header = mono_method_get_header_checked (method, &cfg->error);
8194         if (!header) {
8195                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8196                 goto exception_exit;
8197         } else {
8198                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
8199         }
8200
8201         generic_container = mono_method_get_generic_container (method);
8202         sig = mono_method_signature (method);
8203         num_args = sig->hasthis + sig->param_count;
8204         ip = (unsigned char*)header->code;
8205         cfg->cil_start = ip;
8206         end = ip + header->code_size;
8207         cfg->stat_cil_code_size += header->code_size;
8208
8209         seq_points = cfg->gen_seq_points && cfg->method == method;
8210
8211         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8212                 /* We could hit a seq point before attaching to the JIT (#8338) */
8213                 seq_points = FALSE;
8214         }
8215
8216         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8217                 minfo = mono_debug_lookup_method (method);
8218                 if (minfo) {
8219                         MonoSymSeqPoint *sps;
8220                         int i, n_il_offsets;
8221
8222                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8223                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8224                         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);
8225                         sym_seq_points = TRUE;
8226                         for (i = 0; i < n_il_offsets; ++i) {
8227                                 if (sps [i].il_offset < header->code_size)
8228                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8229                         }
8230                         g_free (sps);
8231                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8232                         /* Methods without line number info like auto-generated property accessors */
8233                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8234                         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);
8235                         sym_seq_points = TRUE;
8236                 }
8237         }
8238
8239         /*
8240          * Methods without init_locals set could cause asserts in various passes
8241          * (#497220). To work around this, we emit dummy initialization opcodes
8242          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8243          * on some platforms.
8244          */
8245         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8246                 init_locals = header->init_locals;
8247         else
8248                 init_locals = TRUE;
8249
8250         method_definition = method;
8251         while (method_definition->is_inflated) {
8252                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8253                 method_definition = imethod->declaring;
8254         }
8255
8256         /* SkipVerification is not allowed if core-clr is enabled */
8257         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8258                 dont_verify = TRUE;
8259                 dont_verify_stloc = TRUE;
8260         }
8261
8262         if (sig->is_inflated)
8263                 generic_context = mono_method_get_context (method);
8264         else if (generic_container)
8265                 generic_context = &generic_container->context;
8266         cfg->generic_context = generic_context;
8267
8268         if (!cfg->gshared)
8269                 g_assert (!sig->has_type_parameters);
8270
8271         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8272                 g_assert (method->is_inflated);
8273                 g_assert (mono_method_get_context (method)->method_inst);
8274         }
8275         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8276                 g_assert (sig->generic_param_count);
8277
8278         if (cfg->method == method) {
8279                 cfg->real_offset = 0;
8280         } else {
8281                 cfg->real_offset = inline_offset;
8282         }
8283
8284         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8285         cfg->cil_offset_to_bb_len = header->code_size;
8286
8287         cfg->current_method = method;
8288
8289         if (cfg->verbose_level > 2)
8290                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8291
8292         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8293         if (sig->hasthis)
8294                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8295         for (n = 0; n < sig->param_count; ++n)
8296                 param_types [n + sig->hasthis] = sig->params [n];
8297         cfg->arg_types = param_types;
8298
8299         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8300         if (cfg->method == method) {
8301
8302                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8303                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8304
8305                 /* ENTRY BLOCK */
8306                 NEW_BBLOCK (cfg, start_bblock);
8307                 cfg->bb_entry = start_bblock;
8308                 start_bblock->cil_code = NULL;
8309                 start_bblock->cil_length = 0;
8310
8311                 /* EXIT BLOCK */
8312                 NEW_BBLOCK (cfg, end_bblock);
8313                 cfg->bb_exit = end_bblock;
8314                 end_bblock->cil_code = NULL;
8315                 end_bblock->cil_length = 0;
8316                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8317                 g_assert (cfg->num_bblocks == 2);
8318
8319                 arg_array = cfg->args;
8320
8321                 if (header->num_clauses) {
8322                         cfg->spvars = g_hash_table_new (NULL, NULL);
8323                         cfg->exvars = g_hash_table_new (NULL, NULL);
8324                 }
8325                 /* handle exception clauses */
8326                 for (i = 0; i < header->num_clauses; ++i) {
8327                         MonoBasicBlock *try_bb;
8328                         MonoExceptionClause *clause = &header->clauses [i];
8329                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8330
8331                         try_bb->real_offset = clause->try_offset;
8332                         try_bb->try_start = TRUE;
8333                         try_bb->region = ((i + 1) << 8) | clause->flags;
8334                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8335                         tblock->real_offset = clause->handler_offset;
8336                         tblock->flags |= BB_EXCEPTION_HANDLER;
8337
8338                         /*
8339                          * Linking the try block with the EH block hinders inlining as we won't be able to
8340                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8341                          */
8342                         if (COMPILE_LLVM (cfg))
8343                                 link_bblock (cfg, try_bb, tblock);
8344
8345                         if (*(ip + clause->handler_offset) == CEE_POP)
8346                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8347
8348                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8349                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8350                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8351                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8352                                 MONO_ADD_INS (tblock, ins);
8353
8354                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8355                                         /* finally clauses already have a seq point */
8356                                         /* seq points for filter clauses are emitted below */
8357                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8358                                         MONO_ADD_INS (tblock, ins);
8359                                 }
8360
8361                                 /* todo: is a fault block unsafe to optimize? */
8362                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8363                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8364                         }
8365
8366                         /*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);
8367                           while (p < end) {
8368                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8369                           }*/
8370                         /* catch and filter blocks get the exception object on the stack */
8371                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8372                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8373
8374                                 /* mostly like handle_stack_args (), but just sets the input args */
8375                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8376                                 tblock->in_scount = 1;
8377                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8378                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8379
8380                                 cfg->cbb = tblock;
8381
8382 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8383                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8384                                 if (!cfg->compile_llvm) {
8385                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8386                                         ins->dreg = tblock->in_stack [0]->dreg;
8387                                         MONO_ADD_INS (tblock, ins);
8388                                 }
8389 #else
8390                                 MonoInst *dummy_use;
8391
8392                                 /*
8393                                  * Add a dummy use for the exvar so its liveness info will be
8394                                  * correct.
8395                                  */
8396                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8397 #endif
8398
8399                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8400                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8401                                         MONO_ADD_INS (tblock, ins);
8402                                 }
8403
8404                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8405                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8406                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8407                                         tblock->real_offset = clause->data.filter_offset;
8408                                         tblock->in_scount = 1;
8409                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8410                                         /* The filter block shares the exvar with the handler block */
8411                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8412                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8413                                         MONO_ADD_INS (tblock, ins);
8414                                 }
8415                         }
8416
8417                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8418                                         clause->data.catch_class &&
8419                                         cfg->gshared &&
8420                                         mono_class_check_context_used (clause->data.catch_class)) {
8421                                 /*
8422                                  * In shared generic code with catch
8423                                  * clauses containing type variables
8424                                  * the exception handling code has to
8425                                  * be able to get to the rgctx.
8426                                  * Therefore we have to make sure that
8427                                  * the vtable/mrgctx argument (for
8428                                  * static or generic methods) or the
8429                                  * "this" argument (for non-static
8430                                  * methods) are live.
8431                                  */
8432                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8433                                                 mini_method_get_context (method)->method_inst ||
8434                                                 method->klass->valuetype) {
8435                                         mono_get_vtable_var (cfg);
8436                                 } else {
8437                                         MonoInst *dummy_use;
8438
8439                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8440                                 }
8441                         }
8442                 }
8443         } else {
8444                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8445                 cfg->cbb = start_bblock;
8446                 cfg->args = arg_array;
8447                 mono_save_args (cfg, sig, inline_args);
8448         }
8449
8450         /* FIRST CODE BLOCK */
8451         NEW_BBLOCK (cfg, tblock);
8452         tblock->cil_code = ip;
8453         cfg->cbb = tblock;
8454         cfg->ip = ip;
8455
8456         ADD_BBLOCK (cfg, tblock);
8457
8458         if (cfg->method == method) {
8459                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8460                 if (breakpoint_id) {
8461                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8462                         MONO_ADD_INS (cfg->cbb, ins);
8463                 }
8464         }
8465
8466         /* we use a separate basic block for the initialization code */
8467         NEW_BBLOCK (cfg, init_localsbb);
8468         cfg->bb_init = init_localsbb;
8469         init_localsbb->real_offset = cfg->real_offset;
8470         start_bblock->next_bb = init_localsbb;
8471         init_localsbb->next_bb = cfg->cbb;
8472         link_bblock (cfg, start_bblock, init_localsbb);
8473         link_bblock (cfg, init_localsbb, cfg->cbb);
8474
8475         cfg->cbb = init_localsbb;
8476
8477         if (cfg->gsharedvt && cfg->method == method) {
8478                 MonoGSharedVtMethodInfo *info;
8479                 MonoInst *var, *locals_var;
8480                 int dreg;
8481
8482                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8483                 info->method = cfg->method;
8484                 info->count_entries = 16;
8485                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8486                 cfg->gsharedvt_info = info;
8487
8488                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8489                 /* prevent it from being register allocated */
8490                 //var->flags |= MONO_INST_VOLATILE;
8491                 cfg->gsharedvt_info_var = var;
8492
8493                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8494                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8495
8496                 /* Allocate locals */
8497                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8498                 /* prevent it from being register allocated */
8499                 //locals_var->flags |= MONO_INST_VOLATILE;
8500                 cfg->gsharedvt_locals_var = locals_var;
8501
8502                 dreg = alloc_ireg (cfg);
8503                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8504
8505                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8506                 ins->dreg = locals_var->dreg;
8507                 ins->sreg1 = dreg;
8508                 MONO_ADD_INS (cfg->cbb, ins);
8509                 cfg->gsharedvt_locals_var_ins = ins;
8510
8511                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8512                 /*
8513                 if (init_locals)
8514                         ins->flags |= MONO_INST_INIT;
8515                 */
8516         }
8517
8518         if (mono_security_core_clr_enabled ()) {
8519                 /* check if this is native code, e.g. an icall or a p/invoke */
8520                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8521                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8522                         if (wrapped) {
8523                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8524                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8525
8526                                 /* if this ia a native call then it can only be JITted from platform code */
8527                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8528                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8529                                                 MonoException *ex = icall ? mono_get_exception_security () :
8530                                                         mono_get_exception_method_access ();
8531                                                 emit_throw_exception (cfg, ex);
8532                                         }
8533                                 }
8534                         }
8535                 }
8536         }
8537
8538         CHECK_CFG_EXCEPTION;
8539
8540         if (header->code_size == 0)
8541                 UNVERIFIED;
8542
8543         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8544                 ip = err_pos;
8545                 UNVERIFIED;
8546         }
8547
8548         if (cfg->method == method)
8549                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8550
8551         for (n = 0; n < header->num_locals; ++n) {
8552                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8553                         UNVERIFIED;
8554         }
8555         class_inits = NULL;
8556
8557         /* We force the vtable variable here for all shared methods
8558            for the possibility that they might show up in a stack
8559            trace where their exact instantiation is needed. */
8560         if (cfg->gshared && method == cfg->method) {
8561                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8562                                 mini_method_get_context (method)->method_inst ||
8563                                 method->klass->valuetype) {
8564                         mono_get_vtable_var (cfg);
8565                 } else {
8566                         /* FIXME: Is there a better way to do this?
8567                            We need the variable live for the duration
8568                            of the whole method. */
8569                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8570                 }
8571         }
8572
8573         /* add a check for this != NULL to inlined methods */
8574         if (is_virtual_call) {
8575                 MonoInst *arg_ins;
8576
8577                 NEW_ARGLOAD (cfg, arg_ins, 0);
8578                 MONO_ADD_INS (cfg->cbb, arg_ins);
8579                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8580         }
8581
8582         skip_dead_blocks = !dont_verify;
8583         if (skip_dead_blocks) {
8584                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8585                 CHECK_CFG_ERROR;
8586                 g_assert (bb);
8587         }
8588
8589         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8590         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8591
8592         ins_flag = 0;
8593         start_new_bblock = 0;
8594         while (ip < end) {
8595                 if (cfg->method == method)
8596                         cfg->real_offset = ip - header->code;
8597                 else
8598                         cfg->real_offset = inline_offset;
8599                 cfg->ip = ip;
8600
8601                 context_used = 0;
8602
8603                 if (start_new_bblock) {
8604                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8605                         if (start_new_bblock == 2) {
8606                                 g_assert (ip == tblock->cil_code);
8607                         } else {
8608                                 GET_BBLOCK (cfg, tblock, ip);
8609                         }
8610                         cfg->cbb->next_bb = tblock;
8611                         cfg->cbb = tblock;
8612                         start_new_bblock = 0;
8613                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8614                                 if (cfg->verbose_level > 3)
8615                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8616                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8617                                 *sp++ = ins;
8618                         }
8619                         if (class_inits)
8620                                 g_slist_free (class_inits);
8621                         class_inits = NULL;
8622                 } else {
8623                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8624                                 link_bblock (cfg, cfg->cbb, tblock);
8625                                 if (sp != stack_start) {
8626                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8627                                         sp = stack_start;
8628                                         CHECK_UNVERIFIABLE (cfg);
8629                                 }
8630                                 cfg->cbb->next_bb = tblock;
8631                                 cfg->cbb = tblock;
8632                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8633                                         if (cfg->verbose_level > 3)
8634                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8635                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8636                                         *sp++ = ins;
8637                                 }
8638                                 g_slist_free (class_inits);
8639                                 class_inits = NULL;
8640                         }
8641                 }
8642
8643                 if (skip_dead_blocks) {
8644                         int ip_offset = ip - header->code;
8645
8646                         if (ip_offset == bb->end)
8647                                 bb = bb->next;
8648
8649                         if (bb->dead) {
8650                                 int op_size = mono_opcode_size (ip, end);
8651                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8652
8653                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8654
8655                                 if (ip_offset + op_size == bb->end) {
8656                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8657                                         MONO_ADD_INS (cfg->cbb, ins);
8658                                         start_new_bblock = 1;
8659                                 }
8660
8661                                 ip += op_size;
8662                                 continue;
8663                         }
8664                 }
8665                 /*
8666                  * Sequence points are points where the debugger can place a breakpoint.
8667                  * Currently, we generate these automatically at points where the IL
8668                  * stack is empty.
8669                  */
8670                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8671                         /*
8672                          * Make methods interruptable at the beginning, and at the targets of
8673                          * backward branches.
8674                          * Also, do this at the start of every bblock in methods with clauses too,
8675                          * to be able to handle instructions with inprecise control flow like
8676                          * throw/endfinally.
8677                          * Backward branches are handled at the end of method-to-ir ().
8678                          */
8679                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8680                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8681
8682                         /* Avoid sequence points on empty IL like .volatile */
8683                         // FIXME: Enable this
8684                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8685                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8686                         if ((sp != stack_start) && !sym_seq_point)
8687                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8688                         MONO_ADD_INS (cfg->cbb, ins);
8689
8690                         if (sym_seq_points)
8691                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8692                 }
8693
8694                 cfg->cbb->real_offset = cfg->real_offset;
8695
8696                 if ((cfg->method == method) && cfg->coverage_info) {
8697                         guint32 cil_offset = ip - header->code;
8698                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8699
8700                         /* TODO: Use an increment here */
8701 #if defined(TARGET_X86)
8702                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8703                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8704                         ins->inst_imm = 1;
8705                         MONO_ADD_INS (cfg->cbb, ins);
8706 #else
8707                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8708                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8709 #endif
8710                 }
8711
8712                 if (cfg->verbose_level > 3)
8713                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8714
8715                 switch (*ip) {
8716                 case CEE_NOP:
8717                         if (seq_points && !sym_seq_points && sp != stack_start) {
8718                                 /*
8719                                  * The C# compiler uses these nops to notify the JIT that it should
8720                                  * insert seq points.
8721                                  */
8722                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8723                                 MONO_ADD_INS (cfg->cbb, ins);
8724                         }
8725                         if (cfg->keep_cil_nops)
8726                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8727                         else
8728                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8729                         ip++;
8730                         MONO_ADD_INS (cfg->cbb, ins);
8731                         break;
8732                 case CEE_BREAK:
8733                         if (should_insert_brekpoint (cfg->method)) {
8734                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8735                         } else {
8736                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8737                         }
8738                         ip++;
8739                         MONO_ADD_INS (cfg->cbb, ins);
8740                         break;
8741                 case CEE_LDARG_0:
8742                 case CEE_LDARG_1:
8743                 case CEE_LDARG_2:
8744                 case CEE_LDARG_3:
8745                         CHECK_STACK_OVF (1);
8746                         n = (*ip)-CEE_LDARG_0;
8747                         CHECK_ARG (n);
8748                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8749                         ip++;
8750                         *sp++ = ins;
8751                         break;
8752                 case CEE_LDLOC_0:
8753                 case CEE_LDLOC_1:
8754                 case CEE_LDLOC_2:
8755                 case CEE_LDLOC_3:
8756                         CHECK_STACK_OVF (1);
8757                         n = (*ip)-CEE_LDLOC_0;
8758                         CHECK_LOCAL (n);
8759                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8760                         ip++;
8761                         *sp++ = ins;
8762                         break;
8763                 case CEE_STLOC_0:
8764                 case CEE_STLOC_1:
8765                 case CEE_STLOC_2:
8766                 case CEE_STLOC_3: {
8767                         CHECK_STACK (1);
8768                         n = (*ip)-CEE_STLOC_0;
8769                         CHECK_LOCAL (n);
8770                         --sp;
8771                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8772                                 UNVERIFIED;
8773                         emit_stloc_ir (cfg, sp, header, n);
8774                         ++ip;
8775                         inline_costs += 1;
8776                         break;
8777                         }
8778                 case CEE_LDARG_S:
8779                         CHECK_OPSIZE (2);
8780                         CHECK_STACK_OVF (1);
8781                         n = ip [1];
8782                         CHECK_ARG (n);
8783                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8784                         *sp++ = ins;
8785                         ip += 2;
8786                         break;
8787                 case CEE_LDARGA_S:
8788                         CHECK_OPSIZE (2);
8789                         CHECK_STACK_OVF (1);
8790                         n = ip [1];
8791                         CHECK_ARG (n);
8792                         NEW_ARGLOADA (cfg, ins, n);
8793                         MONO_ADD_INS (cfg->cbb, ins);
8794                         *sp++ = ins;
8795                         ip += 2;
8796                         break;
8797                 case CEE_STARG_S:
8798                         CHECK_OPSIZE (2);
8799                         CHECK_STACK (1);
8800                         --sp;
8801                         n = ip [1];
8802                         CHECK_ARG (n);
8803                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8804                                 UNVERIFIED;
8805                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8806                         ip += 2;
8807                         break;
8808                 case CEE_LDLOC_S:
8809                         CHECK_OPSIZE (2);
8810                         CHECK_STACK_OVF (1);
8811                         n = ip [1];
8812                         CHECK_LOCAL (n);
8813                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8814                         *sp++ = ins;
8815                         ip += 2;
8816                         break;
8817                 case CEE_LDLOCA_S: {
8818                         unsigned char *tmp_ip;
8819                         CHECK_OPSIZE (2);
8820                         CHECK_STACK_OVF (1);
8821                         CHECK_LOCAL (ip [1]);
8822
8823                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8824                                 ip = tmp_ip;
8825                                 inline_costs += 1;
8826                                 break;
8827                         }
8828
8829                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8830                         *sp++ = ins;
8831                         ip += 2;
8832                         break;
8833                 }
8834                 case CEE_STLOC_S:
8835                         CHECK_OPSIZE (2);
8836                         CHECK_STACK (1);
8837                         --sp;
8838                         CHECK_LOCAL (ip [1]);
8839                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8840                                 UNVERIFIED;
8841                         emit_stloc_ir (cfg, sp, header, ip [1]);
8842                         ip += 2;
8843                         inline_costs += 1;
8844                         break;
8845                 case CEE_LDNULL:
8846                         CHECK_STACK_OVF (1);
8847                         EMIT_NEW_PCONST (cfg, ins, NULL);
8848                         ins->type = STACK_OBJ;
8849                         ++ip;
8850                         *sp++ = ins;
8851                         break;
8852                 case CEE_LDC_I4_M1:
8853                         CHECK_STACK_OVF (1);
8854                         EMIT_NEW_ICONST (cfg, ins, -1);
8855                         ++ip;
8856                         *sp++ = ins;
8857                         break;
8858                 case CEE_LDC_I4_0:
8859                 case CEE_LDC_I4_1:
8860                 case CEE_LDC_I4_2:
8861                 case CEE_LDC_I4_3:
8862                 case CEE_LDC_I4_4:
8863                 case CEE_LDC_I4_5:
8864                 case CEE_LDC_I4_6:
8865                 case CEE_LDC_I4_7:
8866                 case CEE_LDC_I4_8:
8867                         CHECK_STACK_OVF (1);
8868                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8869                         ++ip;
8870                         *sp++ = ins;
8871                         break;
8872                 case CEE_LDC_I4_S:
8873                         CHECK_OPSIZE (2);
8874                         CHECK_STACK_OVF (1);
8875                         ++ip;
8876                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8877                         ++ip;
8878                         *sp++ = ins;
8879                         break;
8880                 case CEE_LDC_I4:
8881                         CHECK_OPSIZE (5);
8882                         CHECK_STACK_OVF (1);
8883                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8884                         ip += 5;
8885                         *sp++ = ins;
8886                         break;
8887                 case CEE_LDC_I8:
8888                         CHECK_OPSIZE (9);
8889                         CHECK_STACK_OVF (1);
8890                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8891                         ins->type = STACK_I8;
8892                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8893                         ++ip;
8894                         ins->inst_l = (gint64)read64 (ip);
8895                         MONO_ADD_INS (cfg->cbb, ins);
8896                         ip += 8;
8897                         *sp++ = ins;
8898                         break;
8899                 case CEE_LDC_R4: {
8900                         float *f;
8901                         gboolean use_aotconst = FALSE;
8902
8903 #ifdef TARGET_POWERPC
8904                         /* FIXME: Clean this up */
8905                         if (cfg->compile_aot)
8906                                 use_aotconst = TRUE;
8907 #endif
8908
8909                         /* FIXME: we should really allocate this only late in the compilation process */
8910                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8911                         CHECK_OPSIZE (5);
8912                         CHECK_STACK_OVF (1);
8913
8914                         if (use_aotconst) {
8915                                 MonoInst *cons;
8916                                 int dreg;
8917
8918                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8919
8920                                 dreg = alloc_freg (cfg);
8921                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8922                                 ins->type = cfg->r4_stack_type;
8923                         } else {
8924                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8925                                 ins->type = cfg->r4_stack_type;
8926                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8927                                 ins->inst_p0 = f;
8928                                 MONO_ADD_INS (cfg->cbb, ins);
8929                         }
8930                         ++ip;
8931                         readr4 (ip, f);
8932                         ip += 4;
8933                         *sp++ = ins;
8934                         break;
8935                 }
8936                 case CEE_LDC_R8: {
8937                         double *d;
8938                         gboolean use_aotconst = FALSE;
8939
8940 #ifdef TARGET_POWERPC
8941                         /* FIXME: Clean this up */
8942                         if (cfg->compile_aot)
8943                                 use_aotconst = TRUE;
8944 #endif
8945
8946                         /* FIXME: we should really allocate this only late in the compilation process */
8947                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8948                         CHECK_OPSIZE (9);
8949                         CHECK_STACK_OVF (1);
8950
8951                         if (use_aotconst) {
8952                                 MonoInst *cons;
8953                                 int dreg;
8954
8955                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8956
8957                                 dreg = alloc_freg (cfg);
8958                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8959                                 ins->type = STACK_R8;
8960                         } else {
8961                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8962                                 ins->type = STACK_R8;
8963                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8964                                 ins->inst_p0 = d;
8965                                 MONO_ADD_INS (cfg->cbb, ins);
8966                         }
8967                         ++ip;
8968                         readr8 (ip, d);
8969                         ip += 8;
8970                         *sp++ = ins;
8971                         break;
8972                 }
8973                 case CEE_DUP: {
8974                         MonoInst *temp, *store;
8975                         CHECK_STACK (1);
8976                         CHECK_STACK_OVF (1);
8977                         sp--;
8978                         ins = *sp;
8979
8980                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8981                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8982
8983                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8984                         *sp++ = ins;
8985
8986                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8987                         *sp++ = ins;
8988
8989                         ++ip;
8990                         inline_costs += 2;
8991                         break;
8992                 }
8993                 case CEE_POP:
8994                         CHECK_STACK (1);
8995                         ip++;
8996                         --sp;
8997
8998 #ifdef TARGET_X86
8999                         if (sp [0]->type == STACK_R8)
9000                                 /* we need to pop the value from the x86 FP stack */
9001                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
9002 #endif
9003                         break;
9004                 case CEE_JMP: {
9005                         MonoCallInst *call;
9006                         MonoMethodSignature *fsig;
9007                         int i, n;
9008
9009                         INLINE_FAILURE ("jmp");
9010                         GSHAREDVT_FAILURE (*ip);
9011
9012                         CHECK_OPSIZE (5);
9013                         if (stack_start != sp)
9014                                 UNVERIFIED;
9015                         token = read32 (ip + 1);
9016                         /* FIXME: check the signature matches */
9017                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9018                         CHECK_CFG_ERROR;
9019
9020                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9021                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9022
9023                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9024
9025                         fsig = mono_method_signature (cmethod);
9026                         n = fsig->param_count + fsig->hasthis;
9027                         if (cfg->llvm_only) {
9028                                 MonoInst **args;
9029
9030                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9031                                 for (i = 0; i < n; ++i)
9032                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9033                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9034                                 /*
9035                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9036                                  * have to emit a normal return since llvm expects it.
9037                                  */
9038                                 if (cfg->ret)
9039                                         emit_setret (cfg, ins);
9040                                 MONO_INST_NEW (cfg, ins, OP_BR);
9041                                 ins->inst_target_bb = end_bblock;
9042                                 MONO_ADD_INS (cfg->cbb, ins);
9043                                 link_bblock (cfg, cfg->cbb, end_bblock);
9044                                 ip += 5;
9045                                 break;
9046                         } else if (cfg->backend->have_op_tail_call) {
9047                                 /* Handle tail calls similarly to calls */
9048                                 DISABLE_AOT (cfg);
9049
9050                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9051                                 call->method = cmethod;
9052                                 call->tail_call = TRUE;
9053                                 call->signature = mono_method_signature (cmethod);
9054                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9055                                 call->inst.inst_p0 = cmethod;
9056                                 for (i = 0; i < n; ++i)
9057                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9058
9059                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
9060                                         call->vret_var = cfg->vret_addr;
9061
9062                                 mono_arch_emit_call (cfg, call);
9063                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9064                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9065                         } else {
9066                                 for (i = 0; i < num_args; ++i)
9067                                         /* Prevent arguments from being optimized away */
9068                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9069
9070                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9071                                 ins = (MonoInst*)call;
9072                                 ins->inst_p0 = cmethod;
9073                                 MONO_ADD_INS (cfg->cbb, ins);
9074                         }
9075
9076                         ip += 5;
9077                         start_new_bblock = 1;
9078                         break;
9079                 }
9080                 case CEE_CALLI: {
9081                         MonoInst *addr;
9082                         MonoMethodSignature *fsig;
9083
9084                         CHECK_OPSIZE (5);
9085                         token = read32 (ip + 1);
9086
9087                         ins = NULL;
9088
9089                         //GSHAREDVT_FAILURE (*ip);
9090                         cmethod = NULL;
9091                         CHECK_STACK (1);
9092                         --sp;
9093                         addr = *sp;
9094                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9095                         CHECK_CFG_ERROR;
9096
9097                         if (method->dynamic && fsig->pinvoke) {
9098                                 MonoInst *args [3];
9099
9100                                 /*
9101                                  * This is a call through a function pointer using a pinvoke
9102                                  * signature. Have to create a wrapper and call that instead.
9103                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9104                                  * instead based on the signature.
9105                                  */
9106                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9107                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9108                                 args [2] = addr;
9109                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9110                         }
9111
9112                         n = fsig->param_count + fsig->hasthis;
9113
9114                         CHECK_STACK (n);
9115
9116                         //g_assert (!virtual_ || fsig->hasthis);
9117
9118                         sp -= n;
9119
9120                         inline_costs += 10 * num_calls++;
9121
9122                         /*
9123                          * Making generic calls out of gsharedvt methods.
9124                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9125                          * patching gshared method addresses into a gsharedvt method.
9126                          */
9127                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9128                                 /*
9129                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9130                                  */
9131                                 MonoInst *callee = addr;
9132
9133                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9134                                         /* Not tested */
9135                                         GSHAREDVT_FAILURE (*ip);
9136
9137                                 if (cfg->llvm_only)
9138                                         // FIXME:
9139                                         GSHAREDVT_FAILURE (*ip);
9140
9141                                 addr = emit_get_rgctx_sig (cfg, context_used,
9142                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9143                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9144                                 goto calli_end;
9145                         }
9146
9147                         /* Prevent inlining of methods with indirect calls */
9148                         INLINE_FAILURE ("indirect call");
9149
9150                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9151                                 MonoJumpInfoType info_type;
9152                                 gpointer info_data;
9153
9154                                 /*
9155                                  * Instead of emitting an indirect call, emit a direct call
9156                                  * with the contents of the aotconst as the patch info.
9157                                  */
9158                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9159                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9160                                         info_data = addr->inst_p0;
9161                                 } else {
9162                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9163                                         info_data = addr->inst_right->inst_left;
9164                                 }
9165
9166                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9167                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9168                                         NULLIFY_INS (addr);
9169                                         goto calli_end;
9170                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9171                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9172                                         NULLIFY_INS (addr);
9173                                         goto calli_end;
9174                                 }
9175                         }
9176                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9177
9178                         calli_end:
9179
9180                         /* End of call, INS should contain the result of the call, if any */
9181
9182                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9183                                 g_assert (ins);
9184                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9185                         }
9186
9187                         CHECK_CFG_EXCEPTION;
9188
9189                         ip += 5;
9190                         ins_flag = 0;
9191                         constrained_class = NULL;
9192                         break;
9193                 }
9194                 case CEE_CALL:
9195                 case CEE_CALLVIRT: {
9196                         MonoInst *addr = NULL;
9197                         MonoMethodSignature *fsig = NULL;
9198                         int array_rank = 0;
9199                         int virtual_ = *ip == CEE_CALLVIRT;
9200                         gboolean pass_imt_from_rgctx = FALSE;
9201                         MonoInst *imt_arg = NULL;
9202                         MonoInst *keep_this_alive = NULL;
9203                         gboolean pass_vtable = FALSE;
9204                         gboolean pass_mrgctx = FALSE;
9205                         MonoInst *vtable_arg = NULL;
9206                         gboolean check_this = FALSE;
9207                         gboolean supported_tail_call = FALSE;
9208                         gboolean tail_call = FALSE;
9209                         gboolean need_seq_point = FALSE;
9210                         guint32 call_opcode = *ip;
9211                         gboolean emit_widen = TRUE;
9212                         gboolean push_res = TRUE;
9213                         gboolean skip_ret = FALSE;
9214                         gboolean delegate_invoke = FALSE;
9215                         gboolean direct_icall = FALSE;
9216                         gboolean constrained_partial_call = FALSE;
9217                         MonoMethod *cil_method;
9218
9219                         CHECK_OPSIZE (5);
9220                         token = read32 (ip + 1);
9221
9222                         ins = NULL;
9223
9224                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9225                         CHECK_CFG_ERROR;
9226
9227                         cil_method = cmethod;
9228
9229                         if (constrained_class) {
9230                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9231                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9232                                                 g_assert (!cmethod->klass->valuetype);
9233                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9234                                                         constrained_partial_call = TRUE;
9235                                         }
9236                                 }
9237
9238                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9239                                         if (cfg->verbose_level > 2)
9240                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9241                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9242                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9243                                                   cfg->gshared)) {
9244                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9245                                                 CHECK_CFG_ERROR;
9246                                         }
9247                                 } else {
9248                                         if (cfg->verbose_level > 2)
9249                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9250
9251                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9252                                                 /*
9253                                                  * This is needed since get_method_constrained can't find
9254                                                  * the method in klass representing a type var.
9255                                                  * The type var is guaranteed to be a reference type in this
9256                                                  * case.
9257                                                  */
9258                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9259                                                         g_assert (!cmethod->klass->valuetype);
9260                                         } else {
9261                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9262                                                 CHECK_CFG_ERROR;
9263                                         }
9264                                 }
9265                         }
9266
9267                         if (!dont_verify && !cfg->skip_visibility) {
9268                                 MonoMethod *target_method = cil_method;
9269                                 if (method->is_inflated) {
9270                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9271                                         CHECK_CFG_ERROR;
9272                                 }
9273                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9274                                         !mono_method_can_access_method (method, cil_method))
9275                                         emit_method_access_failure (cfg, method, cil_method);
9276                         }
9277
9278                         if (mono_security_core_clr_enabled ())
9279                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9280
9281                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9282                                 /* MS.NET seems to silently convert this to a callvirt */
9283                                 virtual_ = 1;
9284
9285                         {
9286                                 /*
9287                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9288                                  * converts to a callvirt.
9289                                  *
9290                                  * tests/bug-515884.il is an example of this behavior
9291                                  */
9292                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9293                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9294                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9295                                         virtual_ = 1;
9296                         }
9297
9298                         if (!cmethod->klass->inited)
9299                                 if (!mono_class_init (cmethod->klass))
9300                                         TYPE_LOAD_ERROR (cmethod->klass);
9301
9302                         fsig = mono_method_signature (cmethod);
9303                         if (!fsig)
9304                                 LOAD_ERROR;
9305                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9306                                 mini_class_is_system_array (cmethod->klass)) {
9307                                 array_rank = cmethod->klass->rank;
9308                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9309                                 direct_icall = TRUE;
9310                         } else if (fsig->pinvoke) {
9311                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9312                                 fsig = mono_method_signature (wrapper);
9313                         } else if (constrained_class) {
9314                         } else {
9315                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9316                                 CHECK_CFG_ERROR;
9317                         }
9318
9319                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9320                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9321
9322                         /* See code below */
9323                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9324                                 MonoBasicBlock *tbb;
9325
9326                                 GET_BBLOCK (cfg, tbb, ip + 5);
9327                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9328                                         /*
9329                                          * We want to extend the try block to cover the call, but we can't do it if the
9330                                          * call is made directly since its followed by an exception check.
9331                                          */
9332                                         direct_icall = FALSE;
9333                                 }
9334                         }
9335
9336                         mono_save_token_info (cfg, image, token, cil_method);
9337
9338                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9339                                 need_seq_point = TRUE;
9340
9341                         /* Don't support calls made using type arguments for now */
9342                         /*
9343                           if (cfg->gsharedvt) {
9344                           if (mini_is_gsharedvt_signature (fsig))
9345                           GSHAREDVT_FAILURE (*ip);
9346                           }
9347                         */
9348
9349                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9350                                 g_assert_not_reached ();
9351
9352                         n = fsig->param_count + fsig->hasthis;
9353
9354                         if (!cfg->gshared && cmethod->klass->generic_container)
9355                                 UNVERIFIED;
9356
9357                         if (!cfg->gshared)
9358                                 g_assert (!mono_method_check_context_used (cmethod));
9359
9360                         CHECK_STACK (n);
9361
9362                         //g_assert (!virtual_ || fsig->hasthis);
9363
9364                         sp -= n;
9365
9366                         /*
9367                          * We have the `constrained.' prefix opcode.
9368                          */
9369                         if (constrained_class) {
9370                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9371                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9372                                                 /* The 'Own method' case below */
9373                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9374                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9375                                         } else {
9376                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9377                                                 CHECK_CFG_EXCEPTION;
9378                                                 g_assert (ins);
9379                                                 goto call_end;
9380                                         }
9381                                 }
9382
9383                                 if (constrained_partial_call) {
9384                                         gboolean need_box = TRUE;
9385
9386                                         /*
9387                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9388                                          * called method is not known at compile time either. The called method could end up being
9389                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9390                                          * to box the receiver.
9391                                          * A simple solution would be to box always and make a normal virtual call, but that would
9392                                          * be bad performance wise.
9393                                          */
9394                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9395                                                 /*
9396                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9397                                                  */
9398                                                 need_box = FALSE;
9399                                         }
9400
9401                                         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)) {
9402                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9403                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9404                                                 ins->klass = constrained_class;
9405                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9406                                                 CHECK_CFG_EXCEPTION;
9407                                         } else if (need_box) {
9408                                                 MonoInst *box_type;
9409                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9410                                                 MonoInst *nonbox_call;
9411
9412                                                 /*
9413                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9414                                                  * if needed.
9415                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9416                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9417                                                  */
9418                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9419
9420                                                 NEW_BBLOCK (cfg, is_ref_bb);
9421                                                 NEW_BBLOCK (cfg, end_bb);
9422
9423                                                 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);
9424                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9425                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9426
9427                                                 /* Non-ref case */
9428                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9429
9430                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9431
9432                                                 /* Ref case */
9433                                                 MONO_START_BB (cfg, is_ref_bb);
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                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9438
9439                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9440
9441                                                 MONO_START_BB (cfg, end_bb);
9442                                                 cfg->cbb = end_bb;
9443
9444                                                 nonbox_call->dreg = ins->dreg;
9445                                                 goto call_end;
9446                                         } else {
9447                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9448                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9449                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9450                                                 goto call_end;
9451                                         }
9452                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9453                                         /*
9454                                          * The type parameter is instantiated as a valuetype,
9455                                          * but that type doesn't override the method we're
9456                                          * calling, so we need to box `this'.
9457                                          */
9458                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9459                                         ins->klass = constrained_class;
9460                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9461                                         CHECK_CFG_EXCEPTION;
9462                                 } else if (!constrained_class->valuetype) {
9463                                         int dreg = alloc_ireg_ref (cfg);
9464
9465                                         /*
9466                                          * The type parameter is instantiated as a reference
9467                                          * type.  We have a managed pointer on the stack, so
9468                                          * we need to dereference it here.
9469                                          */
9470                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9471                                         ins->type = STACK_OBJ;
9472                                         sp [0] = ins;
9473                                 } else {
9474                                         if (cmethod->klass->valuetype) {
9475                                                 /* Own method */
9476                                         } else {
9477                                                 /* Interface method */
9478                                                 int ioffset, slot;
9479
9480                                                 mono_class_setup_vtable (constrained_class);
9481                                                 CHECK_TYPELOAD (constrained_class);
9482                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9483                                                 if (ioffset == -1)
9484                                                         TYPE_LOAD_ERROR (constrained_class);
9485                                                 slot = mono_method_get_vtable_slot (cmethod);
9486                                                 if (slot == -1)
9487                                                         TYPE_LOAD_ERROR (cmethod->klass);
9488                                                 cmethod = constrained_class->vtable [ioffset + slot];
9489
9490                                                 if (cmethod->klass == mono_defaults.enum_class) {
9491                                                         /* Enum implements some interfaces, so treat this as the first case */
9492                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9493                                                         ins->klass = constrained_class;
9494                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9495                                                         CHECK_CFG_EXCEPTION;
9496                                                 }
9497                                         }
9498                                         virtual_ = 0;
9499                                 }
9500                                 constrained_class = NULL;
9501                         }
9502
9503                         if (check_call_signature (cfg, fsig, sp))
9504                                 UNVERIFIED;
9505
9506                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9507                                 delegate_invoke = TRUE;
9508
9509                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9510                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9511                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9512                                         emit_widen = FALSE;
9513                                 }
9514
9515                                 goto call_end;
9516                         }
9517
9518                         /*
9519                          * If the callee is a shared method, then its static cctor
9520                          * might not get called after the call was patched.
9521                          */
9522                         if (cfg->gshared && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9523                                 emit_class_init (cfg, cmethod->klass);
9524                                 CHECK_TYPELOAD (cmethod->klass);
9525                         }
9526
9527                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9528
9529                         if (cfg->gshared) {
9530                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9531
9532                                 context_used = mini_method_check_context_used (cfg, cmethod);
9533
9534                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9535                                         /* Generic method interface
9536                                            calls are resolved via a
9537                                            helper function and don't
9538                                            need an imt. */
9539                                         if (!cmethod_context || !cmethod_context->method_inst)
9540                                                 pass_imt_from_rgctx = TRUE;
9541                                 }
9542
9543                                 /*
9544                                  * If a shared method calls another
9545                                  * shared method then the caller must
9546                                  * have a generic sharing context
9547                                  * because the magic trampoline
9548                                  * requires it.  FIXME: We shouldn't
9549                                  * have to force the vtable/mrgctx
9550                                  * variable here.  Instead there
9551                                  * should be a flag in the cfg to
9552                                  * request a generic sharing context.
9553                                  */
9554                                 if (context_used &&
9555                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9556                                         mono_get_vtable_var (cfg);
9557                         }
9558
9559                         if (pass_vtable) {
9560                                 if (context_used) {
9561                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9562                                 } else {
9563                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9564
9565                                         CHECK_TYPELOAD (cmethod->klass);
9566                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9567                                 }
9568                         }
9569
9570                         if (pass_mrgctx) {
9571                                 g_assert (!vtable_arg);
9572
9573                                 if (!cfg->compile_aot) {
9574                                         /*
9575                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9576                                          * for type load errors before.
9577                                          */
9578                                         mono_class_setup_vtable (cmethod->klass);
9579                                         CHECK_TYPELOAD (cmethod->klass);
9580                                 }
9581
9582                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9583
9584                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9585                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9586                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9587                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9588                                         if (virtual_)
9589                                                 check_this = TRUE;
9590                                         virtual_ = 0;
9591                                 }
9592                         }
9593
9594                         if (pass_imt_from_rgctx) {
9595                                 g_assert (!pass_vtable);
9596
9597                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9598                                         cmethod, MONO_RGCTX_INFO_METHOD);
9599                         }
9600
9601                         if (check_this)
9602                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9603
9604                         /* Calling virtual generic methods */
9605                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9606                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9607                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9608                             fsig->generic_param_count &&
9609                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9610                                 !cfg->llvm_only) {
9611                                 MonoInst *this_temp, *this_arg_temp, *store;
9612                                 MonoInst *iargs [4];
9613
9614                                 g_assert (fsig->is_inflated);
9615
9616                                 /* Prevent inlining of methods that contain indirect calls */
9617                                 INLINE_FAILURE ("virtual generic call");
9618
9619                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9620                                         GSHAREDVT_FAILURE (*ip);
9621
9622                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9623                                         g_assert (!imt_arg);
9624                                         if (!context_used)
9625                                                 g_assert (cmethod->is_inflated);
9626                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9627                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9628                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9629                                 } else {
9630                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9631                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9632                                         MONO_ADD_INS (cfg->cbb, store);
9633
9634                                         /* FIXME: This should be a managed pointer */
9635                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9636
9637                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9638                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9639                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9640                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9641                                         addr = mono_emit_jit_icall (cfg,
9642                                                                                                 mono_helper_compile_generic_method, iargs);
9643
9644                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9645
9646                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9647                                 }
9648
9649                                 goto call_end;
9650                         }
9651
9652                         /*
9653                          * Implement a workaround for the inherent races involved in locking:
9654                          * Monitor.Enter ()
9655                          * try {
9656                          * } finally {
9657                          *    Monitor.Exit ()
9658                          * }
9659                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9660                          * try block, the Exit () won't be executed, see:
9661                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9662                          * To work around this, we extend such try blocks to include the last x bytes
9663                          * of the Monitor.Enter () call.
9664                          */
9665                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9666                                 MonoBasicBlock *tbb;
9667
9668                                 GET_BBLOCK (cfg, tbb, ip + 5);
9669                                 /*
9670                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9671                                  * from Monitor.Enter like ArgumentNullException.
9672                                  */
9673                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9674                                         /* Mark this bblock as needing to be extended */
9675                                         tbb->extend_try_block = TRUE;
9676                                 }
9677                         }
9678
9679                         /* Conversion to a JIT intrinsic */
9680                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9681                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9682                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9683                                         emit_widen = FALSE;
9684                                 }
9685                                 goto call_end;
9686                         }
9687                         CHECK_CFG_ERROR;
9688
9689                         /* Inlining */
9690                         if ((cfg->opt & MONO_OPT_INLINE) &&
9691                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9692                             mono_method_check_inlining (cfg, cmethod)) {
9693                                 int costs;
9694                                 gboolean always = FALSE;
9695
9696                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9697                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9698                                         /* Prevent inlining of methods that call wrappers */
9699                                         INLINE_FAILURE ("wrapper call");
9700                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9701                                         always = TRUE;
9702                                 }
9703
9704                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9705                                 if (costs) {
9706                                         cfg->real_offset += 5;
9707
9708                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9709                                                 /* *sp is already set by inline_method */
9710                                                 sp++;
9711                                                 push_res = FALSE;
9712                                         }
9713
9714                                         inline_costs += costs;
9715
9716                                         goto call_end;
9717                                 }
9718                         }
9719
9720                         /* Tail recursion elimination */
9721                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9722                                 gboolean has_vtargs = FALSE;
9723                                 int i;
9724
9725                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9726                                 INLINE_FAILURE ("tail call");
9727
9728                                 /* keep it simple */
9729                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9730                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9731                                                 has_vtargs = TRUE;
9732                                 }
9733
9734                                 if (!has_vtargs) {
9735                                         for (i = 0; i < n; ++i)
9736                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9737                                         MONO_INST_NEW (cfg, ins, OP_BR);
9738                                         MONO_ADD_INS (cfg->cbb, ins);
9739                                         tblock = start_bblock->out_bb [0];
9740                                         link_bblock (cfg, cfg->cbb, tblock);
9741                                         ins->inst_target_bb = tblock;
9742                                         start_new_bblock = 1;
9743
9744                                         /* skip the CEE_RET, too */
9745                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9746                                                 skip_ret = TRUE;
9747                                         push_res = FALSE;
9748                                         goto call_end;
9749                                 }
9750                         }
9751
9752                         inline_costs += 10 * num_calls++;
9753
9754                         /*
9755                          * Synchronized wrappers.
9756                          * Its hard to determine where to replace a method with its synchronized
9757                          * wrapper without causing an infinite recursion. The current solution is
9758                          * to add the synchronized wrapper in the trampolines, and to
9759                          * change the called method to a dummy wrapper, and resolve that wrapper
9760                          * to the real method in mono_jit_compile_method ().
9761                          */
9762                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9763                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9764                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9765                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9766                         }
9767
9768                         /*
9769                          * Making generic calls out of gsharedvt methods.
9770                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9771                          * patching gshared method addresses into a gsharedvt method.
9772                          */
9773                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9774                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9775                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9776                                 MonoRgctxInfoType info_type;
9777
9778                                 if (virtual_) {
9779                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9780                                                 //GSHAREDVT_FAILURE (*ip);
9781                                         // disable for possible remoting calls
9782                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9783                                                 GSHAREDVT_FAILURE (*ip);
9784                                         if (fsig->generic_param_count) {
9785                                                 /* virtual generic call */
9786                                                 g_assert (!imt_arg);
9787                                                 /* Same as the virtual generic case above */
9788                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9789                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9790                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9791                                                 vtable_arg = NULL;
9792                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9793                                                 /* This can happen when we call a fully instantiated iface method */
9794                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9795                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9796                                                 vtable_arg = NULL;
9797                                         }
9798                                 }
9799
9800                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9801                                         keep_this_alive = sp [0];
9802
9803                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9804                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9805                                 else
9806                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9807                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9808
9809                                 if (cfg->llvm_only) {
9810                                         // FIXME: Avoid initializing vtable_arg
9811                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9812                                 } else {
9813                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9814                                 }
9815                                 goto call_end;
9816                         }
9817
9818                         /* Generic sharing */
9819
9820                         /*
9821                          * Use this if the callee is gsharedvt sharable too, since
9822                          * at runtime we might find an instantiation so the call cannot
9823                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9824                          */
9825                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9826                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9827                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9828                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9829                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9830                                 INLINE_FAILURE ("gshared");
9831
9832                                 g_assert (cfg->gshared && cmethod);
9833                                 g_assert (!addr);
9834
9835                                 /*
9836                                  * We are compiling a call to a
9837                                  * generic method from shared code,
9838                                  * which means that we have to look up
9839                                  * the method in the rgctx and do an
9840                                  * indirect call.
9841                                  */
9842                                 if (fsig->hasthis)
9843                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9844
9845                                 if (cfg->llvm_only) {
9846                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9847                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9848                                         else
9849                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9850                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9851                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9852                                 } else {
9853                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9854                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9855                                 }
9856                                 goto call_end;
9857                         }
9858
9859                         /* Direct calls to icalls */
9860                         if (direct_icall) {
9861                                 MonoMethod *wrapper;
9862                                 int costs;
9863
9864                                 /* Inline the wrapper */
9865                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9866
9867                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9868                                 g_assert (costs > 0);
9869                                 cfg->real_offset += 5;
9870
9871                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9872                                         /* *sp is already set by inline_method */
9873                                         sp++;
9874                                         push_res = FALSE;
9875                                 }
9876
9877                                 inline_costs += costs;
9878
9879                                 goto call_end;
9880                         }
9881
9882                         /* Array methods */
9883                         if (array_rank) {
9884                                 MonoInst *addr;
9885
9886                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9887                                         MonoInst *val = sp [fsig->param_count];
9888
9889                                         if (val->type == STACK_OBJ) {
9890                                                 MonoInst *iargs [2];
9891
9892                                                 iargs [0] = sp [0];
9893                                                 iargs [1] = val;
9894
9895                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9896                                         }
9897
9898                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9899                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9900                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9901                                                 emit_write_barrier (cfg, addr, val);
9902                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9903                                                 GSHAREDVT_FAILURE (*ip);
9904                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9905                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9906
9907                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9908                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9909                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9910                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9911                                         CHECK_TYPELOAD (cmethod->klass);
9912
9913                                         readonly = FALSE;
9914                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9915                                         ins = addr;
9916                                 } else {
9917                                         g_assert_not_reached ();
9918                                 }
9919
9920                                 emit_widen = FALSE;
9921                                 goto call_end;
9922                         }
9923
9924                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9925                         if (ins)
9926                                 goto call_end;
9927
9928                         /* Tail prefix / tail call optimization */
9929
9930                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9931                         /* FIXME: runtime generic context pointer for jumps? */
9932                         /* FIXME: handle this for generic sharing eventually */
9933                         if ((ins_flag & MONO_INST_TAILCALL) &&
9934                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9935                                 supported_tail_call = TRUE;
9936
9937                         if (supported_tail_call) {
9938                                 MonoCallInst *call;
9939
9940                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9941                                 INLINE_FAILURE ("tail call");
9942
9943                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9944
9945                                 if (cfg->backend->have_op_tail_call) {
9946                                         /* Handle tail calls similarly to normal calls */
9947                                         tail_call = TRUE;
9948                                 } else {
9949                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9950
9951                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9952                                         call->tail_call = TRUE;
9953                                         call->method = cmethod;
9954                                         call->signature = mono_method_signature (cmethod);
9955
9956                                         /*
9957                                          * We implement tail calls by storing the actual arguments into the
9958                                          * argument variables, then emitting a CEE_JMP.
9959                                          */
9960                                         for (i = 0; i < n; ++i) {
9961                                                 /* Prevent argument from being register allocated */
9962                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9963                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9964                                         }
9965                                         ins = (MonoInst*)call;
9966                                         ins->inst_p0 = cmethod;
9967                                         ins->inst_p1 = arg_array [0];
9968                                         MONO_ADD_INS (cfg->cbb, ins);
9969                                         link_bblock (cfg, cfg->cbb, end_bblock);
9970                                         start_new_bblock = 1;
9971
9972                                         // FIXME: Eliminate unreachable epilogs
9973
9974                                         /*
9975                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9976                                          * only reachable from this call.
9977                                          */
9978                                         GET_BBLOCK (cfg, tblock, ip + 5);
9979                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9980                                                 skip_ret = TRUE;
9981                                         push_res = FALSE;
9982
9983                                         goto call_end;
9984                                 }
9985                         }
9986
9987                         /*
9988                          * Virtual calls in llvm-only mode.
9989                          */
9990                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9991                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9992                                 goto call_end;
9993                         }
9994
9995                         /* Common call */
9996                         INLINE_FAILURE ("call");
9997                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9998                                                                                           imt_arg, vtable_arg);
9999
10000                         if (tail_call && !cfg->llvm_only) {
10001                                 link_bblock (cfg, cfg->cbb, end_bblock);
10002                                 start_new_bblock = 1;
10003
10004                                 // FIXME: Eliminate unreachable epilogs
10005
10006                                 /*
10007                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10008                                  * only reachable from this call.
10009                                  */
10010                                 GET_BBLOCK (cfg, tblock, ip + 5);
10011                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10012                                         skip_ret = TRUE;
10013                                 push_res = FALSE;
10014                         }
10015
10016                         call_end:
10017
10018                         /* End of call, INS should contain the result of the call, if any */
10019
10020                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10021                                 g_assert (ins);
10022                                 if (emit_widen)
10023                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10024                                 else
10025                                         *sp++ = ins;
10026                         }
10027
10028                         if (keep_this_alive) {
10029                                 MonoInst *dummy_use;
10030
10031                                 /* See mono_emit_method_call_full () */
10032                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10033                         }
10034
10035                         CHECK_CFG_EXCEPTION;
10036
10037                         ip += 5;
10038                         if (skip_ret) {
10039                                 g_assert (*ip == CEE_RET);
10040                                 ip += 1;
10041                         }
10042                         ins_flag = 0;
10043                         constrained_class = NULL;
10044                         if (need_seq_point)
10045                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10046                         break;
10047                 }
10048                 case CEE_RET:
10049                         if (cfg->method != method) {
10050                                 /* return from inlined method */
10051                                 /*
10052                                  * If in_count == 0, that means the ret is unreachable due to
10053                                  * being preceeded by a throw. In that case, inline_method () will
10054                                  * handle setting the return value
10055                                  * (test case: test_0_inline_throw ()).
10056                                  */
10057                                 if (return_var && cfg->cbb->in_count) {
10058                                         MonoType *ret_type = mono_method_signature (method)->ret;
10059
10060                                         MonoInst *store;
10061                                         CHECK_STACK (1);
10062                                         --sp;
10063
10064                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10065                                                 UNVERIFIED;
10066
10067                                         //g_assert (returnvar != -1);
10068                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10069                                         cfg->ret_var_set = TRUE;
10070                                 }
10071                         } else {
10072                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10073
10074                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10075                                         emit_pop_lmf (cfg);
10076
10077                                 if (cfg->ret) {
10078                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10079
10080                                         if (seq_points && !sym_seq_points) {
10081                                                 /*
10082                                                  * Place a seq point here too even through the IL stack is not
10083                                                  * empty, so a step over on
10084                                                  * call <FOO>
10085                                                  * ret
10086                                                  * will work correctly.
10087                                                  */
10088                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10089                                                 MONO_ADD_INS (cfg->cbb, ins);
10090                                         }
10091
10092                                         g_assert (!return_var);
10093                                         CHECK_STACK (1);
10094                                         --sp;
10095
10096                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10097                                                 UNVERIFIED;
10098
10099                                         emit_setret (cfg, *sp);
10100                                 }
10101                         }
10102                         if (sp != stack_start)
10103                                 UNVERIFIED;
10104                         MONO_INST_NEW (cfg, ins, OP_BR);
10105                         ip++;
10106                         ins->inst_target_bb = end_bblock;
10107                         MONO_ADD_INS (cfg->cbb, ins);
10108                         link_bblock (cfg, cfg->cbb, end_bblock);
10109                         start_new_bblock = 1;
10110                         break;
10111                 case CEE_BR_S:
10112                         CHECK_OPSIZE (2);
10113                         MONO_INST_NEW (cfg, ins, OP_BR);
10114                         ip++;
10115                         target = ip + 1 + (signed char)(*ip);
10116                         ++ip;
10117                         GET_BBLOCK (cfg, tblock, target);
10118                         link_bblock (cfg, cfg->cbb, tblock);
10119                         ins->inst_target_bb = tblock;
10120                         if (sp != stack_start) {
10121                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10122                                 sp = stack_start;
10123                                 CHECK_UNVERIFIABLE (cfg);
10124                         }
10125                         MONO_ADD_INS (cfg->cbb, ins);
10126                         start_new_bblock = 1;
10127                         inline_costs += BRANCH_COST;
10128                         break;
10129                 case CEE_BEQ_S:
10130                 case CEE_BGE_S:
10131                 case CEE_BGT_S:
10132                 case CEE_BLE_S:
10133                 case CEE_BLT_S:
10134                 case CEE_BNE_UN_S:
10135                 case CEE_BGE_UN_S:
10136                 case CEE_BGT_UN_S:
10137                 case CEE_BLE_UN_S:
10138                 case CEE_BLT_UN_S:
10139                         CHECK_OPSIZE (2);
10140                         CHECK_STACK (2);
10141                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10142                         ip++;
10143                         target = ip + 1 + *(signed char*)ip;
10144                         ip++;
10145
10146                         ADD_BINCOND (NULL);
10147
10148                         sp = stack_start;
10149                         inline_costs += BRANCH_COST;
10150                         break;
10151                 case CEE_BR:
10152                         CHECK_OPSIZE (5);
10153                         MONO_INST_NEW (cfg, ins, OP_BR);
10154                         ip++;
10155
10156                         target = ip + 4 + (gint32)read32(ip);
10157                         ip += 4;
10158                         GET_BBLOCK (cfg, tblock, target);
10159                         link_bblock (cfg, cfg->cbb, tblock);
10160                         ins->inst_target_bb = tblock;
10161                         if (sp != stack_start) {
10162                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10163                                 sp = stack_start;
10164                                 CHECK_UNVERIFIABLE (cfg);
10165                         }
10166
10167                         MONO_ADD_INS (cfg->cbb, ins);
10168
10169                         start_new_bblock = 1;
10170                         inline_costs += BRANCH_COST;
10171                         break;
10172                 case CEE_BRFALSE_S:
10173                 case CEE_BRTRUE_S:
10174                 case CEE_BRFALSE:
10175                 case CEE_BRTRUE: {
10176                         MonoInst *cmp;
10177                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10178                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10179                         guint32 opsize = is_short ? 1 : 4;
10180
10181                         CHECK_OPSIZE (opsize);
10182                         CHECK_STACK (1);
10183                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10184                                 UNVERIFIED;
10185                         ip ++;
10186                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10187                         ip += opsize;
10188
10189                         sp--;
10190
10191                         GET_BBLOCK (cfg, tblock, target);
10192                         link_bblock (cfg, cfg->cbb, tblock);
10193                         GET_BBLOCK (cfg, tblock, ip);
10194                         link_bblock (cfg, cfg->cbb, tblock);
10195
10196                         if (sp != stack_start) {
10197                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10198                                 CHECK_UNVERIFIABLE (cfg);
10199                         }
10200
10201                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10202                         cmp->sreg1 = sp [0]->dreg;
10203                         type_from_op (cfg, cmp, sp [0], NULL);
10204                         CHECK_TYPE (cmp);
10205
10206 #if SIZEOF_REGISTER == 4
10207                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10208                                 /* Convert it to OP_LCOMPARE */
10209                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10210                                 ins->type = STACK_I8;
10211                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10212                                 ins->inst_l = 0;
10213                                 MONO_ADD_INS (cfg->cbb, ins);
10214                                 cmp->opcode = OP_LCOMPARE;
10215                                 cmp->sreg2 = ins->dreg;
10216                         }
10217 #endif
10218                         MONO_ADD_INS (cfg->cbb, cmp);
10219
10220                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10221                         type_from_op (cfg, ins, sp [0], NULL);
10222                         MONO_ADD_INS (cfg->cbb, ins);
10223                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10224                         GET_BBLOCK (cfg, tblock, target);
10225                         ins->inst_true_bb = tblock;
10226                         GET_BBLOCK (cfg, tblock, ip);
10227                         ins->inst_false_bb = tblock;
10228                         start_new_bblock = 2;
10229
10230                         sp = stack_start;
10231                         inline_costs += BRANCH_COST;
10232                         break;
10233                 }
10234                 case CEE_BEQ:
10235                 case CEE_BGE:
10236                 case CEE_BGT:
10237                 case CEE_BLE:
10238                 case CEE_BLT:
10239                 case CEE_BNE_UN:
10240                 case CEE_BGE_UN:
10241                 case CEE_BGT_UN:
10242                 case CEE_BLE_UN:
10243                 case CEE_BLT_UN:
10244                         CHECK_OPSIZE (5);
10245                         CHECK_STACK (2);
10246                         MONO_INST_NEW (cfg, ins, *ip);
10247                         ip++;
10248                         target = ip + 4 + (gint32)read32(ip);
10249                         ip += 4;
10250
10251                         ADD_BINCOND (NULL);
10252
10253                         sp = stack_start;
10254                         inline_costs += BRANCH_COST;
10255                         break;
10256                 case CEE_SWITCH: {
10257                         MonoInst *src1;
10258                         MonoBasicBlock **targets;
10259                         MonoBasicBlock *default_bblock;
10260                         MonoJumpInfoBBTable *table;
10261                         int offset_reg = alloc_preg (cfg);
10262                         int target_reg = alloc_preg (cfg);
10263                         int table_reg = alloc_preg (cfg);
10264                         int sum_reg = alloc_preg (cfg);
10265                         gboolean use_op_switch;
10266
10267                         CHECK_OPSIZE (5);
10268                         CHECK_STACK (1);
10269                         n = read32 (ip + 1);
10270                         --sp;
10271                         src1 = sp [0];
10272                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10273                                 UNVERIFIED;
10274
10275                         ip += 5;
10276                         CHECK_OPSIZE (n * sizeof (guint32));
10277                         target = ip + n * sizeof (guint32);
10278
10279                         GET_BBLOCK (cfg, default_bblock, target);
10280                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10281
10282                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10283                         for (i = 0; i < n; ++i) {
10284                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10285                                 targets [i] = tblock;
10286                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10287                                 ip += 4;
10288                         }
10289
10290                         if (sp != stack_start) {
10291                                 /*
10292                                  * Link the current bb with the targets as well, so handle_stack_args
10293                                  * will set their in_stack correctly.
10294                                  */
10295                                 link_bblock (cfg, cfg->cbb, default_bblock);
10296                                 for (i = 0; i < n; ++i)
10297                                         link_bblock (cfg, cfg->cbb, targets [i]);
10298
10299                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10300                                 sp = stack_start;
10301                                 CHECK_UNVERIFIABLE (cfg);
10302
10303                                 /* Undo the links */
10304                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10305                                 for (i = 0; i < n; ++i)
10306                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10307                         }
10308
10309                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10310                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10311
10312                         for (i = 0; i < n; ++i)
10313                                 link_bblock (cfg, cfg->cbb, targets [i]);
10314
10315                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10316                         table->table = targets;
10317                         table->table_size = n;
10318
10319                         use_op_switch = FALSE;
10320 #ifdef TARGET_ARM
10321                         /* ARM implements SWITCH statements differently */
10322                         /* FIXME: Make it use the generic implementation */
10323                         if (!cfg->compile_aot)
10324                                 use_op_switch = TRUE;
10325 #endif
10326
10327                         if (COMPILE_LLVM (cfg))
10328                                 use_op_switch = TRUE;
10329
10330                         cfg->cbb->has_jump_table = 1;
10331
10332                         if (use_op_switch) {
10333                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10334                                 ins->sreg1 = src1->dreg;
10335                                 ins->inst_p0 = table;
10336                                 ins->inst_many_bb = targets;
10337                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10338                                 MONO_ADD_INS (cfg->cbb, ins);
10339                         } else {
10340                                 if (sizeof (gpointer) == 8)
10341                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10342                                 else
10343                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10344
10345 #if SIZEOF_REGISTER == 8
10346                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10347                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10348 #endif
10349
10350                                 if (cfg->compile_aot) {
10351                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10352                                 } else {
10353                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10354                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10355                                         ins->inst_p0 = table;
10356                                         ins->dreg = table_reg;
10357                                         MONO_ADD_INS (cfg->cbb, ins);
10358                                 }
10359
10360                                 /* FIXME: Use load_memindex */
10361                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10362                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10363                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10364                         }
10365                         start_new_bblock = 1;
10366                         inline_costs += (BRANCH_COST * 2);
10367                         break;
10368                 }
10369                 case CEE_LDIND_I1:
10370                 case CEE_LDIND_U1:
10371                 case CEE_LDIND_I2:
10372                 case CEE_LDIND_U2:
10373                 case CEE_LDIND_I4:
10374                 case CEE_LDIND_U4:
10375                 case CEE_LDIND_I8:
10376                 case CEE_LDIND_I:
10377                 case CEE_LDIND_R4:
10378                 case CEE_LDIND_R8:
10379                 case CEE_LDIND_REF:
10380                         CHECK_STACK (1);
10381                         --sp;
10382
10383                         switch (*ip) {
10384                         case CEE_LDIND_R4:
10385                         case CEE_LDIND_R8:
10386                                 dreg = alloc_freg (cfg);
10387                                 break;
10388                         case CEE_LDIND_I8:
10389                                 dreg = alloc_lreg (cfg);
10390                                 break;
10391                         case CEE_LDIND_REF:
10392                                 dreg = alloc_ireg_ref (cfg);
10393                                 break;
10394                         default:
10395                                 dreg = alloc_preg (cfg);
10396                         }
10397
10398                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10399                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10400                         if (*ip == CEE_LDIND_R4)
10401                                 ins->type = cfg->r4_stack_type;
10402                         ins->flags |= ins_flag;
10403                         MONO_ADD_INS (cfg->cbb, ins);
10404                         *sp++ = ins;
10405                         if (ins_flag & MONO_INST_VOLATILE) {
10406                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10407                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10408                         }
10409                         ins_flag = 0;
10410                         ++ip;
10411                         break;
10412                 case CEE_STIND_REF:
10413                 case CEE_STIND_I1:
10414                 case CEE_STIND_I2:
10415                 case CEE_STIND_I4:
10416                 case CEE_STIND_I8:
10417                 case CEE_STIND_R4:
10418                 case CEE_STIND_R8:
10419                 case CEE_STIND_I:
10420                         CHECK_STACK (2);
10421                         sp -= 2;
10422
10423                         if (ins_flag & MONO_INST_VOLATILE) {
10424                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10425                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10426                         }
10427
10428                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10429                         ins->flags |= ins_flag;
10430                         ins_flag = 0;
10431
10432                         MONO_ADD_INS (cfg->cbb, ins);
10433
10434                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0)))
10435                                 emit_write_barrier (cfg, sp [0], sp [1]);
10436
10437                         inline_costs += 1;
10438                         ++ip;
10439                         break;
10440
10441                 case CEE_MUL:
10442                         CHECK_STACK (2);
10443
10444                         MONO_INST_NEW (cfg, ins, (*ip));
10445                         sp -= 2;
10446                         ins->sreg1 = sp [0]->dreg;
10447                         ins->sreg2 = sp [1]->dreg;
10448                         type_from_op (cfg, ins, sp [0], sp [1]);
10449                         CHECK_TYPE (ins);
10450                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10451
10452                         /* Use the immediate opcodes if possible */
10453                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10454                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10455                                 if (imm_opcode != -1) {
10456                                         ins->opcode = imm_opcode;
10457                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10458                                         ins->sreg2 = -1;
10459
10460                                         NULLIFY_INS (sp [1]);
10461                                 }
10462                         }
10463
10464                         MONO_ADD_INS ((cfg)->cbb, (ins));
10465
10466                         *sp++ = mono_decompose_opcode (cfg, ins);
10467                         ip++;
10468                         break;
10469                 case CEE_ADD:
10470                 case CEE_SUB:
10471                 case CEE_DIV:
10472                 case CEE_DIV_UN:
10473                 case CEE_REM:
10474                 case CEE_REM_UN:
10475                 case CEE_AND:
10476                 case CEE_OR:
10477                 case CEE_XOR:
10478                 case CEE_SHL:
10479                 case CEE_SHR:
10480                 case CEE_SHR_UN:
10481                         CHECK_STACK (2);
10482
10483                         MONO_INST_NEW (cfg, ins, (*ip));
10484                         sp -= 2;
10485                         ins->sreg1 = sp [0]->dreg;
10486                         ins->sreg2 = sp [1]->dreg;
10487                         type_from_op (cfg, ins, sp [0], sp [1]);
10488                         CHECK_TYPE (ins);
10489                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10490                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10491
10492                         /* FIXME: Pass opcode to is_inst_imm */
10493
10494                         /* Use the immediate opcodes if possible */
10495                         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)) {
10496                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10497                                 if (imm_opcode != -1) {
10498                                         ins->opcode = imm_opcode;
10499                                         if (sp [1]->opcode == OP_I8CONST) {
10500 #if SIZEOF_REGISTER == 8
10501                                                 ins->inst_imm = sp [1]->inst_l;
10502 #else
10503                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10504                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10505 #endif
10506                                         }
10507                                         else
10508                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10509                                         ins->sreg2 = -1;
10510
10511                                         /* Might be followed by an instruction added by add_widen_op */
10512                                         if (sp [1]->next == NULL)
10513                                                 NULLIFY_INS (sp [1]);
10514                                 }
10515                         }
10516                         MONO_ADD_INS ((cfg)->cbb, (ins));
10517
10518                         *sp++ = mono_decompose_opcode (cfg, ins);
10519                         ip++;
10520                         break;
10521                 case CEE_NEG:
10522                 case CEE_NOT:
10523                 case CEE_CONV_I1:
10524                 case CEE_CONV_I2:
10525                 case CEE_CONV_I4:
10526                 case CEE_CONV_R4:
10527                 case CEE_CONV_R8:
10528                 case CEE_CONV_U4:
10529                 case CEE_CONV_I8:
10530                 case CEE_CONV_U8:
10531                 case CEE_CONV_OVF_I8:
10532                 case CEE_CONV_OVF_U8:
10533                 case CEE_CONV_R_UN:
10534                         CHECK_STACK (1);
10535
10536                         /* Special case this earlier so we have long constants in the IR */
10537                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10538                                 int data = sp [-1]->inst_c0;
10539                                 sp [-1]->opcode = OP_I8CONST;
10540                                 sp [-1]->type = STACK_I8;
10541 #if SIZEOF_REGISTER == 8
10542                                 if ((*ip) == CEE_CONV_U8)
10543                                         sp [-1]->inst_c0 = (guint32)data;
10544                                 else
10545                                         sp [-1]->inst_c0 = data;
10546 #else
10547                                 sp [-1]->inst_ls_word = data;
10548                                 if ((*ip) == CEE_CONV_U8)
10549                                         sp [-1]->inst_ms_word = 0;
10550                                 else
10551                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10552 #endif
10553                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10554                         }
10555                         else {
10556                                 ADD_UNOP (*ip);
10557                         }
10558                         ip++;
10559                         break;
10560                 case CEE_CONV_OVF_I4:
10561                 case CEE_CONV_OVF_I1:
10562                 case CEE_CONV_OVF_I2:
10563                 case CEE_CONV_OVF_I:
10564                 case CEE_CONV_OVF_U:
10565                         CHECK_STACK (1);
10566
10567                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10568                                 ADD_UNOP (CEE_CONV_OVF_I8);
10569                                 ADD_UNOP (*ip);
10570                         } else {
10571                                 ADD_UNOP (*ip);
10572                         }
10573                         ip++;
10574                         break;
10575                 case CEE_CONV_OVF_U1:
10576                 case CEE_CONV_OVF_U2:
10577                 case CEE_CONV_OVF_U4:
10578                         CHECK_STACK (1);
10579
10580                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10581                                 ADD_UNOP (CEE_CONV_OVF_U8);
10582                                 ADD_UNOP (*ip);
10583                         } else {
10584                                 ADD_UNOP (*ip);
10585                         }
10586                         ip++;
10587                         break;
10588                 case CEE_CONV_OVF_I1_UN:
10589                 case CEE_CONV_OVF_I2_UN:
10590                 case CEE_CONV_OVF_I4_UN:
10591                 case CEE_CONV_OVF_I8_UN:
10592                 case CEE_CONV_OVF_U1_UN:
10593                 case CEE_CONV_OVF_U2_UN:
10594                 case CEE_CONV_OVF_U4_UN:
10595                 case CEE_CONV_OVF_U8_UN:
10596                 case CEE_CONV_OVF_I_UN:
10597                 case CEE_CONV_OVF_U_UN:
10598                 case CEE_CONV_U2:
10599                 case CEE_CONV_U1:
10600                 case CEE_CONV_I:
10601                 case CEE_CONV_U:
10602                         CHECK_STACK (1);
10603                         ADD_UNOP (*ip);
10604                         CHECK_CFG_EXCEPTION;
10605                         ip++;
10606                         break;
10607                 case CEE_ADD_OVF:
10608                 case CEE_ADD_OVF_UN:
10609                 case CEE_MUL_OVF:
10610                 case CEE_MUL_OVF_UN:
10611                 case CEE_SUB_OVF:
10612                 case CEE_SUB_OVF_UN:
10613                         CHECK_STACK (2);
10614                         ADD_BINOP (*ip);
10615                         ip++;
10616                         break;
10617                 case CEE_CPOBJ:
10618                         GSHAREDVT_FAILURE (*ip);
10619                         CHECK_OPSIZE (5);
10620                         CHECK_STACK (2);
10621                         token = read32 (ip + 1);
10622                         klass = mini_get_class (method, token, generic_context);
10623                         CHECK_TYPELOAD (klass);
10624                         sp -= 2;
10625                         if (generic_class_is_reference_type (cfg, klass)) {
10626                                 MonoInst *store, *load;
10627                                 int dreg = alloc_ireg_ref (cfg);
10628
10629                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10630                                 load->flags |= ins_flag;
10631                                 MONO_ADD_INS (cfg->cbb, load);
10632
10633                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10634                                 store->flags |= ins_flag;
10635                                 MONO_ADD_INS (cfg->cbb, store);
10636
10637                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10638                                         emit_write_barrier (cfg, sp [0], sp [1]);
10639                         } else {
10640                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10641                         }
10642                         ins_flag = 0;
10643                         ip += 5;
10644                         break;
10645                 case CEE_LDOBJ: {
10646                         int loc_index = -1;
10647                         int stloc_len = 0;
10648
10649                         CHECK_OPSIZE (5);
10650                         CHECK_STACK (1);
10651                         --sp;
10652                         token = read32 (ip + 1);
10653                         klass = mini_get_class (method, token, generic_context);
10654                         CHECK_TYPELOAD (klass);
10655
10656                         /* Optimize the common ldobj+stloc combination */
10657                         switch (ip [5]) {
10658                         case CEE_STLOC_S:
10659                                 loc_index = ip [6];
10660                                 stloc_len = 2;
10661                                 break;
10662                         case CEE_STLOC_0:
10663                         case CEE_STLOC_1:
10664                         case CEE_STLOC_2:
10665                         case CEE_STLOC_3:
10666                                 loc_index = ip [5] - CEE_STLOC_0;
10667                                 stloc_len = 1;
10668                                 break;
10669                         default:
10670                                 break;
10671                         }
10672
10673                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10674                                 CHECK_LOCAL (loc_index);
10675
10676                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10677                                 ins->dreg = cfg->locals [loc_index]->dreg;
10678                                 ins->flags |= ins_flag;
10679                                 ip += 5;
10680                                 ip += stloc_len;
10681                                 if (ins_flag & MONO_INST_VOLATILE) {
10682                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10683                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10684                                 }
10685                                 ins_flag = 0;
10686                                 break;
10687                         }
10688
10689                         /* Optimize the ldobj+stobj combination */
10690                         /* The reference case ends up being a load+store anyway */
10691                         /* Skip this if the operation is volatile. */
10692                         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)) {
10693                                 CHECK_STACK (1);
10694
10695                                 sp --;
10696
10697                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10698
10699                                 ip += 5 + 5;
10700                                 ins_flag = 0;
10701                                 break;
10702                         }
10703
10704                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10705                         ins->flags |= ins_flag;
10706                         *sp++ = ins;
10707
10708                         if (ins_flag & MONO_INST_VOLATILE) {
10709                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10710                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10711                         }
10712
10713                         ip += 5;
10714                         ins_flag = 0;
10715                         inline_costs += 1;
10716                         break;
10717                 }
10718                 case CEE_LDSTR:
10719                         CHECK_STACK_OVF (1);
10720                         CHECK_OPSIZE (5);
10721                         n = read32 (ip + 1);
10722
10723                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10724                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10725                                 ins->type = STACK_OBJ;
10726                                 *sp = ins;
10727                         }
10728                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10729                                 MonoInst *iargs [1];
10730                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10731
10732                                 if (cfg->compile_aot)
10733                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10734                                 else
10735                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10736                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10737                         } else {
10738                                 if (cfg->opt & MONO_OPT_SHARED) {
10739                                         MonoInst *iargs [3];
10740
10741                                         if (cfg->compile_aot) {
10742                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10743                                         }
10744                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10745                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10746                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10747                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10748                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10749                                         CHECK_CFG_ERROR;
10750                                 } else {
10751                                         if (cfg->cbb->out_of_line) {
10752                                                 MonoInst *iargs [2];
10753
10754                                                 if (image == mono_defaults.corlib) {
10755                                                         /*
10756                                                          * Avoid relocations in AOT and save some space by using a
10757                                                          * version of helper_ldstr specialized to mscorlib.
10758                                                          */
10759                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10760                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10761                                                 } else {
10762                                                         /* Avoid creating the string object */
10763                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10764                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10765                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10766                                                 }
10767                                         }
10768                                         else
10769                                         if (cfg->compile_aot) {
10770                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10771                                                 *sp = ins;
10772                                                 MONO_ADD_INS (cfg->cbb, ins);
10773                                         }
10774                                         else {
10775                                                 NEW_PCONST (cfg, ins, NULL);
10776                                                 ins->type = STACK_OBJ;
10777                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10778                                                 CHECK_CFG_ERROR;
10779
10780                                                 if (!ins->inst_p0)
10781                                                         OUT_OF_MEMORY_FAILURE;
10782
10783                                                 *sp = ins;
10784                                                 MONO_ADD_INS (cfg->cbb, ins);
10785                                         }
10786                                 }
10787                         }
10788
10789                         sp++;
10790                         ip += 5;
10791                         break;
10792                 case CEE_NEWOBJ: {
10793                         MonoInst *iargs [2];
10794                         MonoMethodSignature *fsig;
10795                         MonoInst this_ins;
10796                         MonoInst *alloc;
10797                         MonoInst *vtable_arg = NULL;
10798
10799                         CHECK_OPSIZE (5);
10800                         token = read32 (ip + 1);
10801                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10802                         CHECK_CFG_ERROR;
10803
10804                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10805                         CHECK_CFG_ERROR;
10806
10807                         mono_save_token_info (cfg, image, token, cmethod);
10808
10809                         if (!mono_class_init (cmethod->klass))
10810                                 TYPE_LOAD_ERROR (cmethod->klass);
10811
10812                         context_used = mini_method_check_context_used (cfg, cmethod);
10813
10814                         if (mono_security_core_clr_enabled ())
10815                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10816
10817                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10818                                 emit_class_init (cfg, cmethod->klass);
10819                                 CHECK_TYPELOAD (cmethod->klass);
10820                         }
10821
10822                         /*
10823                         if (cfg->gsharedvt) {
10824                                 if (mini_is_gsharedvt_variable_signature (sig))
10825                                         GSHAREDVT_FAILURE (*ip);
10826                         }
10827                         */
10828
10829                         n = fsig->param_count;
10830                         CHECK_STACK (n);
10831
10832                         /*
10833                          * Generate smaller code for the common newobj <exception> instruction in
10834                          * argument checking code.
10835                          */
10836                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10837                                 is_exception_class (cmethod->klass) && n <= 2 &&
10838                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10839                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10840                                 MonoInst *iargs [3];
10841
10842                                 sp -= n;
10843
10844                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10845                                 switch (n) {
10846                                 case 0:
10847                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10848                                         break;
10849                                 case 1:
10850                                         iargs [1] = sp [0];
10851                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10852                                         break;
10853                                 case 2:
10854                                         iargs [1] = sp [0];
10855                                         iargs [2] = sp [1];
10856                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10857                                         break;
10858                                 default:
10859                                         g_assert_not_reached ();
10860                                 }
10861
10862                                 ip += 5;
10863                                 inline_costs += 5;
10864                                 break;
10865                         }
10866
10867                         /* move the args to allow room for 'this' in the first position */
10868                         while (n--) {
10869                                 --sp;
10870                                 sp [1] = sp [0];
10871                         }
10872
10873                         /* check_call_signature () requires sp[0] to be set */
10874                         this_ins.type = STACK_OBJ;
10875                         sp [0] = &this_ins;
10876                         if (check_call_signature (cfg, fsig, sp))
10877                                 UNVERIFIED;
10878
10879                         iargs [0] = NULL;
10880
10881                         if (mini_class_is_system_array (cmethod->klass)) {
10882                                 *sp = emit_get_rgctx_method (cfg, context_used,
10883                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10884
10885                                 /* Avoid varargs in the common case */
10886                                 if (fsig->param_count == 1)
10887                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10888                                 else if (fsig->param_count == 2)
10889                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10890                                 else if (fsig->param_count == 3)
10891                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10892                                 else if (fsig->param_count == 4)
10893                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10894                                 else
10895                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10896                         } else if (cmethod->string_ctor) {
10897                                 g_assert (!context_used);
10898                                 g_assert (!vtable_arg);
10899                                 /* we simply pass a null pointer */
10900                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10901                                 /* now call the string ctor */
10902                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10903                         } else {
10904                                 if (cmethod->klass->valuetype) {
10905                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10906                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10907                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10908
10909                                         alloc = NULL;
10910
10911                                         /*
10912                                          * The code generated by mini_emit_virtual_call () expects
10913                                          * iargs [0] to be a boxed instance, but luckily the vcall
10914                                          * will be transformed into a normal call there.
10915                                          */
10916                                 } else if (context_used) {
10917                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10918                                         *sp = alloc;
10919                                 } else {
10920                                         MonoVTable *vtable = NULL;
10921
10922                                         if (!cfg->compile_aot)
10923                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10924                                         CHECK_TYPELOAD (cmethod->klass);
10925
10926                                         /*
10927                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10928                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10929                                          * As a workaround, we call class cctors before allocating objects.
10930                                          */
10931                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10932                                                 emit_class_init (cfg, cmethod->klass);
10933                                                 if (cfg->verbose_level > 2)
10934                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10935                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10936                                         }
10937
10938                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10939                                         *sp = alloc;
10940                                 }
10941                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10942
10943                                 if (alloc)
10944                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10945
10946                                 /* Now call the actual ctor */
10947                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10948                                 CHECK_CFG_EXCEPTION;
10949                         }
10950
10951                         if (alloc == NULL) {
10952                                 /* Valuetype */
10953                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10954                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10955                                 *sp++= ins;
10956                         } else {
10957                                 *sp++ = alloc;
10958                         }
10959
10960                         ip += 5;
10961                         inline_costs += 5;
10962                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10963                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10964                         break;
10965                 }
10966                 case CEE_CASTCLASS:
10967                 case CEE_ISINST: {
10968                         CHECK_STACK (1);
10969                         --sp;
10970                         CHECK_OPSIZE (5);
10971                         token = read32 (ip + 1);
10972                         klass = mini_get_class (method, token, generic_context);
10973                         CHECK_TYPELOAD (klass);
10974                         if (sp [0]->type != STACK_OBJ)
10975                                 UNVERIFIED;
10976
10977                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10978                         ins->dreg = alloc_preg (cfg);
10979                         ins->sreg1 = (*sp)->dreg;
10980                         ins->klass = klass;
10981                         ins->type = STACK_OBJ;
10982                         MONO_ADD_INS (cfg->cbb, ins);
10983
10984                         CHECK_CFG_EXCEPTION;
10985                         *sp++ = ins;
10986                         ip += 5;
10987
10988                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10989                         break;
10990                 }
10991                 case CEE_UNBOX_ANY: {
10992                         MonoInst *res, *addr;
10993
10994                         CHECK_STACK (1);
10995                         --sp;
10996                         CHECK_OPSIZE (5);
10997                         token = read32 (ip + 1);
10998                         klass = mini_get_class (method, token, generic_context);
10999                         CHECK_TYPELOAD (klass);
11000
11001                         mono_save_token_info (cfg, image, token, klass);
11002
11003                         context_used = mini_class_check_context_used (cfg, klass);
11004
11005                         if (mini_is_gsharedvt_klass (klass)) {
11006                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11007                                 inline_costs += 2;
11008                         } else if (generic_class_is_reference_type (cfg, klass)) {
11009                                 MONO_INST_NEW (cfg, res, OP_CASTCLASS);
11010                                 res->dreg = alloc_preg (cfg);
11011                                 res->sreg1 = (*sp)->dreg;
11012                                 res->klass = klass;
11013                                 res->type = STACK_OBJ;
11014                                 MONO_ADD_INS (cfg->cbb, res);
11015                                 cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
11016                         } else if (mono_class_is_nullable (klass)) {
11017                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11018                         } else {
11019                                 addr = handle_unbox (cfg, klass, sp, context_used);
11020                                 /* LDOBJ */
11021                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11022                                 res = ins;
11023                                 inline_costs += 2;
11024                         }
11025
11026                         *sp ++ = res;
11027                         ip += 5;
11028                         break;
11029                 }
11030                 case CEE_BOX: {
11031                         MonoInst *val;
11032                         MonoClass *enum_class;
11033                         MonoMethod *has_flag;
11034
11035                         CHECK_STACK (1);
11036                         --sp;
11037                         val = *sp;
11038                         CHECK_OPSIZE (5);
11039                         token = read32 (ip + 1);
11040                         klass = mini_get_class (method, token, generic_context);
11041                         CHECK_TYPELOAD (klass);
11042
11043                         mono_save_token_info (cfg, image, token, klass);
11044
11045                         context_used = mini_class_check_context_used (cfg, klass);
11046
11047                         if (generic_class_is_reference_type (cfg, klass)) {
11048                                 *sp++ = val;
11049                                 ip += 5;
11050                                 break;
11051                         }
11052
11053                         if (klass == mono_defaults.void_class)
11054                                 UNVERIFIED;
11055                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11056                                 UNVERIFIED;
11057                         /* frequent check in generic code: box (struct), brtrue */
11058
11059                         /*
11060                          * Look for:
11061                          *
11062                          *   <push int/long ptr>
11063                          *   <push int/long>
11064                          *   box MyFlags
11065                          *   constrained. MyFlags
11066                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11067                          *
11068                          * If we find this sequence and the operand types on box and constrained
11069                          * are equal, we can emit a specialized instruction sequence instead of
11070                          * the very slow HasFlag () call.
11071                          */
11072                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11073                             /* Cheap checks first. */
11074                             ip + 5 + 6 + 5 < end &&
11075                             ip [5] == CEE_PREFIX1 &&
11076                             ip [6] == CEE_CONSTRAINED_ &&
11077                             ip [11] == CEE_CALLVIRT &&
11078                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11079                             mono_class_is_enum (klass) &&
11080                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11081                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11082                             has_flag->klass == mono_defaults.enum_class &&
11083                             !strcmp (has_flag->name, "HasFlag") &&
11084                             has_flag->signature->hasthis &&
11085                             has_flag->signature->param_count == 1) {
11086                                 CHECK_TYPELOAD (enum_class);
11087
11088                                 if (enum_class == klass) {
11089                                         MonoInst *enum_this, *enum_flag;
11090
11091                                         ip += 5 + 6 + 5;
11092                                         --sp;
11093
11094                                         enum_this = sp [0];
11095                                         enum_flag = sp [1];
11096
11097                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11098                                         break;
11099                                 }
11100                         }
11101
11102                         // FIXME: LLVM can't handle the inconsistent bb linking
11103                         if (!mono_class_is_nullable (klass) &&
11104                                 !mini_is_gsharedvt_klass (klass) &&
11105                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11106                                 (ip [5] == CEE_BRTRUE ||
11107                                  ip [5] == CEE_BRTRUE_S ||
11108                                  ip [5] == CEE_BRFALSE ||
11109                                  ip [5] == CEE_BRFALSE_S)) {
11110                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11111                                 int dreg;
11112                                 MonoBasicBlock *true_bb, *false_bb;
11113
11114                                 ip += 5;
11115
11116                                 if (cfg->verbose_level > 3) {
11117                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11118                                         printf ("<box+brtrue opt>\n");
11119                                 }
11120
11121                                 switch (*ip) {
11122                                 case CEE_BRTRUE_S:
11123                                 case CEE_BRFALSE_S:
11124                                         CHECK_OPSIZE (2);
11125                                         ip++;
11126                                         target = ip + 1 + (signed char)(*ip);
11127                                         ip++;
11128                                         break;
11129                                 case CEE_BRTRUE:
11130                                 case CEE_BRFALSE:
11131                                         CHECK_OPSIZE (5);
11132                                         ip++;
11133                                         target = ip + 4 + (gint)(read32 (ip));
11134                                         ip += 4;
11135                                         break;
11136                                 default:
11137                                         g_assert_not_reached ();
11138                                 }
11139
11140                                 /*
11141                                  * We need to link both bblocks, since it is needed for handling stack
11142                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11143                                  * Branching to only one of them would lead to inconsistencies, so
11144                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11145                                  */
11146                                 GET_BBLOCK (cfg, true_bb, target);
11147                                 GET_BBLOCK (cfg, false_bb, ip);
11148
11149                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11150                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11151
11152                                 if (sp != stack_start) {
11153                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11154                                         sp = stack_start;
11155                                         CHECK_UNVERIFIABLE (cfg);
11156                                 }
11157
11158                                 if (COMPILE_LLVM (cfg)) {
11159                                         dreg = alloc_ireg (cfg);
11160                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11161                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11162
11163                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11164                                 } else {
11165                                         /* The JIT can't eliminate the iconst+compare */
11166                                         MONO_INST_NEW (cfg, ins, OP_BR);
11167                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11168                                         MONO_ADD_INS (cfg->cbb, ins);
11169                                 }
11170
11171                                 start_new_bblock = 1;
11172                                 break;
11173                         }
11174
11175                         *sp++ = handle_box (cfg, val, klass, context_used);
11176
11177                         CHECK_CFG_EXCEPTION;
11178                         ip += 5;
11179                         inline_costs += 1;
11180                         break;
11181                 }
11182                 case CEE_UNBOX: {
11183                         CHECK_STACK (1);
11184                         --sp;
11185                         CHECK_OPSIZE (5);
11186                         token = read32 (ip + 1);
11187                         klass = mini_get_class (method, token, generic_context);
11188                         CHECK_TYPELOAD (klass);
11189
11190                         mono_save_token_info (cfg, image, token, klass);
11191
11192                         context_used = mini_class_check_context_used (cfg, klass);
11193
11194                         if (mono_class_is_nullable (klass)) {
11195                                 MonoInst *val;
11196
11197                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11198                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11199
11200                                 *sp++= ins;
11201                         } else {
11202                                 ins = handle_unbox (cfg, klass, sp, context_used);
11203                                 *sp++ = ins;
11204                         }
11205                         ip += 5;
11206                         inline_costs += 2;
11207                         break;
11208                 }
11209                 case CEE_LDFLD:
11210                 case CEE_LDFLDA:
11211                 case CEE_STFLD:
11212                 case CEE_LDSFLD:
11213                 case CEE_LDSFLDA:
11214                 case CEE_STSFLD: {
11215                         MonoClassField *field;
11216 #ifndef DISABLE_REMOTING
11217                         int costs;
11218 #endif
11219                         guint foffset;
11220                         gboolean is_instance;
11221                         int op;
11222                         gpointer addr = NULL;
11223                         gboolean is_special_static;
11224                         MonoType *ftype;
11225                         MonoInst *store_val = NULL;
11226                         MonoInst *thread_ins;
11227
11228                         op = *ip;
11229                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11230                         if (is_instance) {
11231                                 if (op == CEE_STFLD) {
11232                                         CHECK_STACK (2);
11233                                         sp -= 2;
11234                                         store_val = sp [1];
11235                                 } else {
11236                                         CHECK_STACK (1);
11237                                         --sp;
11238                                 }
11239                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11240                                         UNVERIFIED;
11241                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11242                                         UNVERIFIED;
11243                         } else {
11244                                 if (op == CEE_STSFLD) {
11245                                         CHECK_STACK (1);
11246                                         sp--;
11247                                         store_val = sp [0];
11248                                 }
11249                         }
11250
11251                         CHECK_OPSIZE (5);
11252                         token = read32 (ip + 1);
11253                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11254                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11255                                 klass = field->parent;
11256                         }
11257                         else {
11258                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11259                                 CHECK_CFG_ERROR;
11260                         }
11261                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11262                                 FIELD_ACCESS_FAILURE (method, field);
11263                         mono_class_init (klass);
11264
11265                         /* if the class is Critical then transparent code cannot access it's fields */
11266                         if (!is_instance && mono_security_core_clr_enabled ())
11267                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11268
11269                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11270                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11271                         if (mono_security_core_clr_enabled ())
11272                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11273                         */
11274
11275                         ftype = mono_field_get_type (field);
11276
11277                         /*
11278                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11279                          * the static case.
11280                          */
11281                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11282                                 switch (op) {
11283                                 case CEE_LDFLD:
11284                                         op = CEE_LDSFLD;
11285                                         break;
11286                                 case CEE_STFLD:
11287                                         op = CEE_STSFLD;
11288                                         break;
11289                                 case CEE_LDFLDA:
11290                                         op = CEE_LDSFLDA;
11291                                         break;
11292                                 default:
11293                                         g_assert_not_reached ();
11294                                 }
11295                                 is_instance = FALSE;
11296                         }
11297
11298                         context_used = mini_class_check_context_used (cfg, klass);
11299
11300                         /* INSTANCE CASE */
11301
11302                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11303                         if (op == CEE_STFLD) {
11304                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11305                                         UNVERIFIED;
11306 #ifndef DISABLE_REMOTING
11307                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11308                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11309                                         MonoInst *iargs [5];
11310
11311                                         GSHAREDVT_FAILURE (op);
11312
11313                                         iargs [0] = sp [0];
11314                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11315                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11316                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11317                                                     field->offset);
11318                                         iargs [4] = sp [1];
11319
11320                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11321                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11322                                                                                            iargs, ip, cfg->real_offset, TRUE);
11323                                                 CHECK_CFG_EXCEPTION;
11324                                                 g_assert (costs > 0);
11325
11326                                                 cfg->real_offset += 5;
11327
11328                                                 inline_costs += costs;
11329                                         } else {
11330                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11331                                         }
11332                                 } else
11333 #endif
11334                                 {
11335                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11336
11337                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11338
11339                                         if (ins_flag & MONO_INST_VOLATILE) {
11340                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11341                                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11342                                         }
11343
11344                                         if (mini_is_gsharedvt_klass (klass)) {
11345                                                 MonoInst *offset_ins;
11346
11347                                                 context_used = mini_class_check_context_used (cfg, klass);
11348
11349                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11350                                                 /* The value is offset by 1 */
11351                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11352                                                 dreg = alloc_ireg_mp (cfg);
11353                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11354                                                 wbarrier_ptr_ins = ins;
11355                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11356                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11357                                         } else {
11358                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11359                                         }
11360                                         if (sp [0]->opcode != OP_LDADDR)
11361                                                 store->flags |= MONO_INST_FAULT;
11362
11363                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
11364                                                 if (mini_is_gsharedvt_klass (klass)) {
11365                                                         g_assert (wbarrier_ptr_ins);
11366                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11367                                                 } else {
11368                                                         /* insert call to write barrier */
11369                                                         MonoInst *ptr;
11370                                                         int dreg;
11371
11372                                                         dreg = alloc_ireg_mp (cfg);
11373                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11374                                                         emit_write_barrier (cfg, ptr, sp [1]);
11375                                                 }
11376                                         }
11377
11378                                         store->flags |= ins_flag;
11379                                 }
11380                                 ins_flag = 0;
11381                                 ip += 5;
11382                                 break;
11383                         }
11384
11385 #ifndef DISABLE_REMOTING
11386                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11387                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11388                                 MonoInst *iargs [4];
11389
11390                                 GSHAREDVT_FAILURE (op);
11391
11392                                 iargs [0] = sp [0];
11393                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11394                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11395                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11396                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11397                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11398                                                                                    iargs, ip, cfg->real_offset, TRUE);
11399                                         CHECK_CFG_EXCEPTION;
11400                                         g_assert (costs > 0);
11401
11402                                         cfg->real_offset += 5;
11403
11404                                         *sp++ = iargs [0];
11405
11406                                         inline_costs += costs;
11407                                 } else {
11408                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11409                                         *sp++ = ins;
11410                                 }
11411                         } else
11412 #endif
11413                         if (is_instance) {
11414                                 if (sp [0]->type == STACK_VTYPE) {
11415                                         MonoInst *var;
11416
11417                                         /* Have to compute the address of the variable */
11418
11419                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11420                                         if (!var)
11421                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11422                                         else
11423                                                 g_assert (var->klass == klass);
11424
11425                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11426                                         sp [0] = ins;
11427                                 }
11428
11429                                 if (op == CEE_LDFLDA) {
11430                                         if (sp [0]->type == STACK_OBJ) {
11431                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11432                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11433                                         }
11434
11435                                         dreg = alloc_ireg_mp (cfg);
11436
11437                                         if (mini_is_gsharedvt_klass (klass)) {
11438                                                 MonoInst *offset_ins;
11439
11440                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11441                                                 /* The value is offset by 1 */
11442                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11443                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11444                                         } else {
11445                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11446                                         }
11447                                         ins->klass = mono_class_from_mono_type (field->type);
11448                                         ins->type = STACK_MP;
11449                                         *sp++ = ins;
11450                                 } else {
11451                                         MonoInst *load;
11452
11453                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11454
11455                                         if (mini_is_gsharedvt_klass (klass)) {
11456                                                 MonoInst *offset_ins;
11457
11458                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11459                                                 /* The value is offset by 1 */
11460                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11461                                                 dreg = alloc_ireg_mp (cfg);
11462                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11463                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11464                                         } else {
11465                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11466                                         }
11467                                         load->flags |= ins_flag;
11468                                         if (sp [0]->opcode != OP_LDADDR)
11469                                                 load->flags |= MONO_INST_FAULT;
11470                                         *sp++ = load;
11471                                 }
11472                         }
11473
11474                         if (is_instance) {
11475                                 ins_flag = 0;
11476                                 ip += 5;
11477                                 break;
11478                         }
11479
11480                         /* STATIC CASE */
11481                         context_used = mini_class_check_context_used (cfg, klass);
11482
11483                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11484                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11485                                 CHECK_CFG_ERROR;
11486                         }
11487
11488                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11489                          * to be called here.
11490                          */
11491                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11492                                 mono_class_vtable (cfg->domain, klass);
11493                                 CHECK_TYPELOAD (klass);
11494                         }
11495                         mono_domain_lock (cfg->domain);
11496                         if (cfg->domain->special_static_fields)
11497                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11498                         mono_domain_unlock (cfg->domain);
11499
11500                         is_special_static = mono_class_field_is_special_static (field);
11501
11502                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11503                                 thread_ins = mono_get_thread_intrinsic (cfg);
11504                         else
11505                                 thread_ins = NULL;
11506
11507                         /* Generate IR to compute the field address */
11508                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11509                                 /*
11510                                  * Fast access to TLS data
11511                                  * Inline version of get_thread_static_data () in
11512                                  * threads.c.
11513                                  */
11514                                 guint32 offset;
11515                                 int idx, static_data_reg, array_reg, dreg;
11516
11517                                 GSHAREDVT_FAILURE (op);
11518
11519                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11520                                 static_data_reg = alloc_ireg (cfg);
11521                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11522
11523                                 if (cfg->compile_aot) {
11524                                         int offset_reg, offset2_reg, idx_reg;
11525
11526                                         /* For TLS variables, this will return the TLS offset */
11527                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11528                                         offset_reg = ins->dreg;
11529                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11530                                         idx_reg = alloc_ireg (cfg);
11531                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11532                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11533                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11534                                         array_reg = alloc_ireg (cfg);
11535                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11536                                         offset2_reg = alloc_ireg (cfg);
11537                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11538                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11539                                         dreg = alloc_ireg (cfg);
11540                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11541                                 } else {
11542                                         offset = (gsize)addr & 0x7fffffff;
11543                                         idx = offset & 0x3f;
11544
11545                                         array_reg = alloc_ireg (cfg);
11546                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11547                                         dreg = alloc_ireg (cfg);
11548                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11549                                 }
11550                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11551                                         (cfg->compile_aot && is_special_static) ||
11552                                         (context_used && is_special_static)) {
11553                                 MonoInst *iargs [2];
11554
11555                                 g_assert (field->parent);
11556                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11557                                 if (context_used) {
11558                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11559                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11560                                 } else {
11561                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11562                                 }
11563                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11564                         } else if (context_used) {
11565                                 MonoInst *static_data;
11566
11567                                 /*
11568                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11569                                         method->klass->name_space, method->klass->name, method->name,
11570                                         depth, field->offset);
11571                                 */
11572
11573                                 if (mono_class_needs_cctor_run (klass, method))
11574                                         emit_class_init (cfg, klass);
11575
11576                                 /*
11577                                  * The pointer we're computing here is
11578                                  *
11579                                  *   super_info.static_data + field->offset
11580                                  */
11581                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11582                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11583
11584                                 if (mini_is_gsharedvt_klass (klass)) {
11585                                         MonoInst *offset_ins;
11586
11587                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11588                                         /* The value is offset by 1 */
11589                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11590                                         dreg = alloc_ireg_mp (cfg);
11591                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11592                                 } else if (field->offset == 0) {
11593                                         ins = static_data;
11594                                 } else {
11595                                         int addr_reg = mono_alloc_preg (cfg);
11596                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11597                                 }
11598                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11599                                 MonoInst *iargs [2];
11600
11601                                 g_assert (field->parent);
11602                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11603                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11604                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11605                         } else {
11606                                 MonoVTable *vtable = NULL;
11607
11608                                 if (!cfg->compile_aot)
11609                                         vtable = mono_class_vtable (cfg->domain, klass);
11610                                 CHECK_TYPELOAD (klass);
11611
11612                                 if (!addr) {
11613                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11614                                                 if (!(g_slist_find (class_inits, klass))) {
11615                                                         emit_class_init (cfg, klass);
11616                                                         if (cfg->verbose_level > 2)
11617                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11618                                                         class_inits = g_slist_prepend (class_inits, klass);
11619                                                 }
11620                                         } else {
11621                                                 if (cfg->run_cctors) {
11622                                                         /* This makes so that inline cannot trigger */
11623                                                         /* .cctors: too many apps depend on them */
11624                                                         /* running with a specific order... */
11625                                                         g_assert (vtable);
11626                                                         if (! vtable->initialized)
11627                                                                 INLINE_FAILURE ("class init");
11628                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11629                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11630                                                                 goto exception_exit;
11631                                                         }
11632                                                 }
11633                                         }
11634                                         if (cfg->compile_aot)
11635                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11636                                         else {
11637                                                 g_assert (vtable);
11638                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11639                                                 g_assert (addr);
11640                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11641                                         }
11642                                 } else {
11643                                         MonoInst *iargs [1];
11644                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11645                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11646                                 }
11647                         }
11648
11649                         /* Generate IR to do the actual load/store operation */
11650
11651                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11652                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11653                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11654                         }
11655
11656                         if (op == CEE_LDSFLDA) {
11657                                 ins->klass = mono_class_from_mono_type (ftype);
11658                                 ins->type = STACK_PTR;
11659                                 *sp++ = ins;
11660                         } else if (op == CEE_STSFLD) {
11661                                 MonoInst *store;
11662
11663                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11664                                 store->flags |= ins_flag;
11665                         } else {
11666                                 gboolean is_const = FALSE;
11667                                 MonoVTable *vtable = NULL;
11668                                 gpointer addr = NULL;
11669
11670                                 if (!context_used) {
11671                                         vtable = mono_class_vtable (cfg->domain, klass);
11672                                         CHECK_TYPELOAD (klass);
11673                                 }
11674                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11675                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11676                                         int ro_type = ftype->type;
11677                                         if (!addr)
11678                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11679                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11680                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11681                                         }
11682
11683                                         GSHAREDVT_FAILURE (op);
11684
11685                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11686                                         is_const = TRUE;
11687                                         switch (ro_type) {
11688                                         case MONO_TYPE_BOOLEAN:
11689                                         case MONO_TYPE_U1:
11690                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11691                                                 sp++;
11692                                                 break;
11693                                         case MONO_TYPE_I1:
11694                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11695                                                 sp++;
11696                                                 break;
11697                                         case MONO_TYPE_CHAR:
11698                                         case MONO_TYPE_U2:
11699                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11700                                                 sp++;
11701                                                 break;
11702                                         case MONO_TYPE_I2:
11703                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11704                                                 sp++;
11705                                                 break;
11706                                                 break;
11707                                         case MONO_TYPE_I4:
11708                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11709                                                 sp++;
11710                                                 break;
11711                                         case MONO_TYPE_U4:
11712                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11713                                                 sp++;
11714                                                 break;
11715                                         case MONO_TYPE_I:
11716                                         case MONO_TYPE_U:
11717                                         case MONO_TYPE_PTR:
11718                                         case MONO_TYPE_FNPTR:
11719                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11720                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11721                                                 sp++;
11722                                                 break;
11723                                         case MONO_TYPE_STRING:
11724                                         case MONO_TYPE_OBJECT:
11725                                         case MONO_TYPE_CLASS:
11726                                         case MONO_TYPE_SZARRAY:
11727                                         case MONO_TYPE_ARRAY:
11728                                                 if (!mono_gc_is_moving ()) {
11729                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11730                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11731                                                         sp++;
11732                                                 } else {
11733                                                         is_const = FALSE;
11734                                                 }
11735                                                 break;
11736                                         case MONO_TYPE_I8:
11737                                         case MONO_TYPE_U8:
11738                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11739                                                 sp++;
11740                                                 break;
11741                                         case MONO_TYPE_R4:
11742                                         case MONO_TYPE_R8:
11743                                         case MONO_TYPE_VALUETYPE:
11744                                         default:
11745                                                 is_const = FALSE;
11746                                                 break;
11747                                         }
11748                                 }
11749
11750                                 if (!is_const) {
11751                                         MonoInst *load;
11752
11753                                         CHECK_STACK_OVF (1);
11754
11755                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11756                                         load->flags |= ins_flag;
11757                                         ins_flag = 0;
11758                                         *sp++ = load;
11759                                 }
11760                         }
11761
11762                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11763                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11764                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11765                         }
11766
11767                         ins_flag = 0;
11768                         ip += 5;
11769                         break;
11770                 }
11771                 case CEE_STOBJ:
11772                         CHECK_STACK (2);
11773                         sp -= 2;
11774                         CHECK_OPSIZE (5);
11775                         token = read32 (ip + 1);
11776                         klass = mini_get_class (method, token, generic_context);
11777                         CHECK_TYPELOAD (klass);
11778                         if (ins_flag & MONO_INST_VOLATILE) {
11779                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11780                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11781                         }
11782                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11783                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11784                         ins->flags |= ins_flag;
11785                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11786                                         generic_class_is_reference_type (cfg, klass)) {
11787                                 /* insert call to write barrier */
11788                                 emit_write_barrier (cfg, sp [0], sp [1]);
11789                         }
11790                         ins_flag = 0;
11791                         ip += 5;
11792                         inline_costs += 1;
11793                         break;
11794
11795                         /*
11796                          * Array opcodes
11797                          */
11798                 case CEE_NEWARR: {
11799                         MonoInst *len_ins;
11800                         const char *data_ptr;
11801                         int data_size = 0;
11802                         guint32 field_token;
11803
11804                         CHECK_STACK (1);
11805                         --sp;
11806
11807                         CHECK_OPSIZE (5);
11808                         token = read32 (ip + 1);
11809
11810                         klass = mini_get_class (method, token, generic_context);
11811                         CHECK_TYPELOAD (klass);
11812
11813                         context_used = mini_class_check_context_used (cfg, klass);
11814
11815                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11816                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11817                                 ins->sreg1 = sp [0]->dreg;
11818                                 ins->type = STACK_I4;
11819                                 ins->dreg = alloc_ireg (cfg);
11820                                 MONO_ADD_INS (cfg->cbb, ins);
11821                                 *sp = mono_decompose_opcode (cfg, ins);
11822                         }
11823
11824                         if (context_used) {
11825                                 MonoInst *args [3];
11826                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11827                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11828
11829                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11830
11831                                 /* vtable */
11832                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11833                                         array_class, MONO_RGCTX_INFO_VTABLE);
11834                                 /* array len */
11835                                 args [1] = sp [0];
11836
11837                                 if (managed_alloc)
11838                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11839                                 else
11840                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11841                         } else {
11842                                 if (cfg->opt & MONO_OPT_SHARED) {
11843                                         /* Decompose now to avoid problems with references to the domainvar */
11844                                         MonoInst *iargs [3];
11845
11846                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11847                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11848                                         iargs [2] = sp [0];
11849
11850                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11851                                 } else {
11852                                         /* Decompose later since it is needed by abcrem */
11853                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11854                                         mono_class_vtable (cfg->domain, array_type);
11855                                         CHECK_TYPELOAD (array_type);
11856
11857                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11858                                         ins->dreg = alloc_ireg_ref (cfg);
11859                                         ins->sreg1 = sp [0]->dreg;
11860                                         ins->inst_newa_class = klass;
11861                                         ins->type = STACK_OBJ;
11862                                         ins->klass = array_type;
11863                                         MONO_ADD_INS (cfg->cbb, ins);
11864                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11865                                         cfg->cbb->has_array_access = TRUE;
11866
11867                                         /* Needed so mono_emit_load_get_addr () gets called */
11868                                         mono_get_got_var (cfg);
11869                                 }
11870                         }
11871
11872                         len_ins = sp [0];
11873                         ip += 5;
11874                         *sp++ = ins;
11875                         inline_costs += 1;
11876
11877                         /*
11878                          * we inline/optimize the initialization sequence if possible.
11879                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11880                          * for small sizes open code the memcpy
11881                          * ensure the rva field is big enough
11882                          */
11883                         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))) {
11884                                 MonoMethod *memcpy_method = get_memcpy_method ();
11885                                 MonoInst *iargs [3];
11886                                 int add_reg = alloc_ireg_mp (cfg);
11887
11888                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11889                                 if (cfg->compile_aot) {
11890                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11891                                 } else {
11892                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11893                                 }
11894                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11895                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11896                                 ip += 11;
11897                         }
11898
11899                         break;
11900                 }
11901                 case CEE_LDLEN:
11902                         CHECK_STACK (1);
11903                         --sp;
11904                         if (sp [0]->type != STACK_OBJ)
11905                                 UNVERIFIED;
11906
11907                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11908                         ins->dreg = alloc_preg (cfg);
11909                         ins->sreg1 = sp [0]->dreg;
11910                         ins->type = STACK_I4;
11911                         /* This flag will be inherited by the decomposition */
11912                         ins->flags |= MONO_INST_FAULT;
11913                         MONO_ADD_INS (cfg->cbb, ins);
11914                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11915                         cfg->cbb->has_array_access = TRUE;
11916                         ip ++;
11917                         *sp++ = ins;
11918                         break;
11919                 case CEE_LDELEMA:
11920                         CHECK_STACK (2);
11921                         sp -= 2;
11922                         CHECK_OPSIZE (5);
11923                         if (sp [0]->type != STACK_OBJ)
11924                                 UNVERIFIED;
11925
11926                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11927
11928                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11929                         CHECK_TYPELOAD (klass);
11930                         /* we need to make sure that this array is exactly the type it needs
11931                          * to be for correctness. the wrappers are lax with their usage
11932                          * so we need to ignore them here
11933                          */
11934                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11935                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11936                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11937                                 CHECK_TYPELOAD (array_class);
11938                         }
11939
11940                         readonly = FALSE;
11941                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11942                         *sp++ = ins;
11943                         ip += 5;
11944                         break;
11945                 case CEE_LDELEM:
11946                 case CEE_LDELEM_I1:
11947                 case CEE_LDELEM_U1:
11948                 case CEE_LDELEM_I2:
11949                 case CEE_LDELEM_U2:
11950                 case CEE_LDELEM_I4:
11951                 case CEE_LDELEM_U4:
11952                 case CEE_LDELEM_I8:
11953                 case CEE_LDELEM_I:
11954                 case CEE_LDELEM_R4:
11955                 case CEE_LDELEM_R8:
11956                 case CEE_LDELEM_REF: {
11957                         MonoInst *addr;
11958
11959                         CHECK_STACK (2);
11960                         sp -= 2;
11961
11962                         if (*ip == CEE_LDELEM) {
11963                                 CHECK_OPSIZE (5);
11964                                 token = read32 (ip + 1);
11965                                 klass = mini_get_class (method, token, generic_context);
11966                                 CHECK_TYPELOAD (klass);
11967                                 mono_class_init (klass);
11968                         }
11969                         else
11970                                 klass = array_access_to_klass (*ip);
11971
11972                         if (sp [0]->type != STACK_OBJ)
11973                                 UNVERIFIED;
11974
11975                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11976
11977                         if (mini_is_gsharedvt_variable_klass (klass)) {
11978                                 // FIXME-VT: OP_ICONST optimization
11979                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11980                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11981                                 ins->opcode = OP_LOADV_MEMBASE;
11982                         } else if (sp [1]->opcode == OP_ICONST) {
11983                                 int array_reg = sp [0]->dreg;
11984                                 int index_reg = sp [1]->dreg;
11985                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11986
11987                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11988                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11989
11990                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11991                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11992                         } else {
11993                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11994                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11995                         }
11996                         *sp++ = ins;
11997                         if (*ip == CEE_LDELEM)
11998                                 ip += 5;
11999                         else
12000                                 ++ip;
12001                         break;
12002                 }
12003                 case CEE_STELEM_I:
12004                 case CEE_STELEM_I1:
12005                 case CEE_STELEM_I2:
12006                 case CEE_STELEM_I4:
12007                 case CEE_STELEM_I8:
12008                 case CEE_STELEM_R4:
12009                 case CEE_STELEM_R8:
12010                 case CEE_STELEM_REF:
12011                 case CEE_STELEM: {
12012                         CHECK_STACK (3);
12013                         sp -= 3;
12014
12015                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12016
12017                         if (*ip == CEE_STELEM) {
12018                                 CHECK_OPSIZE (5);
12019                                 token = read32 (ip + 1);
12020                                 klass = mini_get_class (method, token, generic_context);
12021                                 CHECK_TYPELOAD (klass);
12022                                 mono_class_init (klass);
12023                         }
12024                         else
12025                                 klass = array_access_to_klass (*ip);
12026
12027                         if (sp [0]->type != STACK_OBJ)
12028                                 UNVERIFIED;
12029
12030                         emit_array_store (cfg, klass, sp, TRUE);
12031
12032                         if (*ip == CEE_STELEM)
12033                                 ip += 5;
12034                         else
12035                                 ++ip;
12036                         inline_costs += 1;
12037                         break;
12038                 }
12039                 case CEE_CKFINITE: {
12040                         CHECK_STACK (1);
12041                         --sp;
12042
12043                         if (cfg->llvm_only) {
12044                                 MonoInst *iargs [1];
12045
12046                                 iargs [0] = sp [0];
12047                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12048                         } else  {
12049                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12050                                 ins->sreg1 = sp [0]->dreg;
12051                                 ins->dreg = alloc_freg (cfg);
12052                                 ins->type = STACK_R8;
12053                                 MONO_ADD_INS (cfg->cbb, ins);
12054
12055                                 *sp++ = mono_decompose_opcode (cfg, ins);
12056                         }
12057
12058                         ++ip;
12059                         break;
12060                 }
12061                 case CEE_REFANYVAL: {
12062                         MonoInst *src_var, *src;
12063
12064                         int klass_reg = alloc_preg (cfg);
12065                         int dreg = alloc_preg (cfg);
12066
12067                         GSHAREDVT_FAILURE (*ip);
12068
12069                         CHECK_STACK (1);
12070                         MONO_INST_NEW (cfg, ins, *ip);
12071                         --sp;
12072                         CHECK_OPSIZE (5);
12073                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12074                         CHECK_TYPELOAD (klass);
12075
12076                         context_used = mini_class_check_context_used (cfg, klass);
12077
12078                         // FIXME:
12079                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12080                         if (!src_var)
12081                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12082                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12083                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12084
12085                         if (context_used) {
12086                                 MonoInst *klass_ins;
12087
12088                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12089                                                 klass, MONO_RGCTX_INFO_KLASS);
12090
12091                                 // FIXME:
12092                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12093                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12094                         } else {
12095                                 mini_emit_class_check (cfg, klass_reg, klass);
12096                         }
12097                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12098                         ins->type = STACK_MP;
12099                         ins->klass = klass;
12100                         *sp++ = ins;
12101                         ip += 5;
12102                         break;
12103                 }
12104                 case CEE_MKREFANY: {
12105                         MonoInst *loc, *addr;
12106
12107                         GSHAREDVT_FAILURE (*ip);
12108
12109                         CHECK_STACK (1);
12110                         MONO_INST_NEW (cfg, ins, *ip);
12111                         --sp;
12112                         CHECK_OPSIZE (5);
12113                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12114                         CHECK_TYPELOAD (klass);
12115
12116                         context_used = mini_class_check_context_used (cfg, klass);
12117
12118                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12119                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12120
12121                         if (context_used) {
12122                                 MonoInst *const_ins;
12123                                 int type_reg = alloc_preg (cfg);
12124
12125                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12126                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12127                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12128                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12129                         } else if (cfg->compile_aot) {
12130                                 int const_reg = alloc_preg (cfg);
12131                                 int type_reg = alloc_preg (cfg);
12132
12133                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12134                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12135                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12136                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12137                         } else {
12138                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12139                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12140                         }
12141                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12142
12143                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12144                         ins->type = STACK_VTYPE;
12145                         ins->klass = mono_defaults.typed_reference_class;
12146                         *sp++ = ins;
12147                         ip += 5;
12148                         break;
12149                 }
12150                 case CEE_LDTOKEN: {
12151                         gpointer handle;
12152                         MonoClass *handle_class;
12153
12154                         CHECK_STACK_OVF (1);
12155
12156                         CHECK_OPSIZE (5);
12157                         n = read32 (ip + 1);
12158
12159                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12160                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12161                                 handle = mono_method_get_wrapper_data (method, n);
12162                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12163                                 if (handle_class == mono_defaults.typehandle_class)
12164                                         handle = &((MonoClass*)handle)->byval_arg;
12165                         }
12166                         else {
12167                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12168                                 CHECK_CFG_ERROR;
12169                         }
12170                         if (!handle)
12171                                 LOAD_ERROR;
12172                         mono_class_init (handle_class);
12173                         if (cfg->gshared) {
12174                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12175                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12176                                         /* This case handles ldtoken
12177                                            of an open type, like for
12178                                            typeof(Gen<>). */
12179                                         context_used = 0;
12180                                 } else if (handle_class == mono_defaults.typehandle_class) {
12181                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12182                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12183                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12184                                 else if (handle_class == mono_defaults.methodhandle_class)
12185                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12186                                 else
12187                                         g_assert_not_reached ();
12188                         }
12189
12190                         if ((cfg->opt & MONO_OPT_SHARED) &&
12191                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12192                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12193                                 MonoInst *addr, *vtvar, *iargs [3];
12194                                 int method_context_used;
12195
12196                                 method_context_used = mini_method_check_context_used (cfg, method);
12197
12198                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12199
12200                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12201                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12202                                 if (method_context_used) {
12203                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12204                                                 method, MONO_RGCTX_INFO_METHOD);
12205                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12206                                 } else {
12207                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12208                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12209                                 }
12210                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12211
12212                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12213
12214                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12215                         } else {
12216                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12217                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12218                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12219                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12220                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12221                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12222
12223                                         mono_class_init (tclass);
12224                                         if (context_used) {
12225                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12226                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12227                                         } else if (cfg->compile_aot) {
12228                                                 if (method->wrapper_type) {
12229                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12230                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12231                                                                 /* Special case for static synchronized wrappers */
12232                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12233                                                         } else {
12234                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12235                                                                 /* FIXME: n is not a normal token */
12236                                                                 DISABLE_AOT (cfg);
12237                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12238                                                         }
12239                                                 } else {
12240                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12241                                                 }
12242                                         } else {
12243                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12244                                                 CHECK_CFG_ERROR;
12245                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12246                                         }
12247                                         ins->type = STACK_OBJ;
12248                                         ins->klass = cmethod->klass;
12249                                         ip += 5;
12250                                 } else {
12251                                         MonoInst *addr, *vtvar;
12252
12253                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12254
12255                                         if (context_used) {
12256                                                 if (handle_class == mono_defaults.typehandle_class) {
12257                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12258                                                                         mono_class_from_mono_type ((MonoType *)handle),
12259                                                                         MONO_RGCTX_INFO_TYPE);
12260                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12261                                                         ins = emit_get_rgctx_method (cfg, context_used,
12262                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12263                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12264                                                         ins = emit_get_rgctx_field (cfg, context_used,
12265                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12266                                                 } else {
12267                                                         g_assert_not_reached ();
12268                                                 }
12269                                         } else if (cfg->compile_aot) {
12270                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12271                                         } else {
12272                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12273                                         }
12274                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12275                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12276                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12277                                 }
12278                         }
12279
12280                         *sp++ = ins;
12281                         ip += 5;
12282                         break;
12283                 }
12284                 case CEE_THROW:
12285                         CHECK_STACK (1);
12286                         if (sp [-1]->type != STACK_OBJ)
12287                                 UNVERIFIED;
12288
12289                         MONO_INST_NEW (cfg, ins, OP_THROW);
12290                         --sp;
12291                         ins->sreg1 = sp [0]->dreg;
12292                         ip++;
12293                         cfg->cbb->out_of_line = TRUE;
12294                         MONO_ADD_INS (cfg->cbb, ins);
12295                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12296                         MONO_ADD_INS (cfg->cbb, ins);
12297                         sp = stack_start;
12298
12299                         link_bblock (cfg, cfg->cbb, end_bblock);
12300                         start_new_bblock = 1;
12301                         /* This can complicate code generation for llvm since the return value might not be defined */
12302                         if (COMPILE_LLVM (cfg))
12303                                 INLINE_FAILURE ("throw");
12304                         break;
12305                 case CEE_ENDFINALLY:
12306                         if (!ip_in_finally_clause (cfg, ip - header->code))
12307                                 UNVERIFIED;
12308                         /* mono_save_seq_point_info () depends on this */
12309                         if (sp != stack_start)
12310                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12311                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12312                         MONO_ADD_INS (cfg->cbb, ins);
12313                         ip++;
12314                         start_new_bblock = 1;
12315
12316                         /*
12317                          * Control will leave the method so empty the stack, otherwise
12318                          * the next basic block will start with a nonempty stack.
12319                          */
12320                         while (sp != stack_start) {
12321                                 sp--;
12322                         }
12323                         break;
12324                 case CEE_LEAVE:
12325                 case CEE_LEAVE_S: {
12326                         GList *handlers;
12327
12328                         if (*ip == CEE_LEAVE) {
12329                                 CHECK_OPSIZE (5);
12330                                 target = ip + 5 + (gint32)read32(ip + 1);
12331                         } else {
12332                                 CHECK_OPSIZE (2);
12333                                 target = ip + 2 + (signed char)(ip [1]);
12334                         }
12335
12336                         /* empty the stack */
12337                         while (sp != stack_start) {
12338                                 sp--;
12339                         }
12340
12341                         /*
12342                          * If this leave statement is in a catch block, check for a
12343                          * pending exception, and rethrow it if necessary.
12344                          * We avoid doing this in runtime invoke wrappers, since those are called
12345                          * by native code which excepts the wrapper to catch all exceptions.
12346                          */
12347                         for (i = 0; i < header->num_clauses; ++i) {
12348                                 MonoExceptionClause *clause = &header->clauses [i];
12349
12350                                 /*
12351                                  * Use <= in the final comparison to handle clauses with multiple
12352                                  * leave statements, like in bug #78024.
12353                                  * The ordering of the exception clauses guarantees that we find the
12354                                  * innermost clause.
12355                                  */
12356                                 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) {
12357                                         MonoInst *exc_ins;
12358                                         MonoBasicBlock *dont_throw;
12359
12360                                         /*
12361                                           MonoInst *load;
12362
12363                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12364                                         */
12365
12366                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12367
12368                                         NEW_BBLOCK (cfg, dont_throw);
12369
12370                                         /*
12371                                          * Currently, we always rethrow the abort exception, despite the
12372                                          * fact that this is not correct. See thread6.cs for an example.
12373                                          * But propagating the abort exception is more important than
12374                                          * getting the sematics right.
12375                                          */
12376                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12377                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12378                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12379
12380                                         MONO_START_BB (cfg, dont_throw);
12381                                 }
12382                         }
12383
12384 #ifdef ENABLE_LLVM
12385                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12386 #endif
12387
12388                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12389                                 GList *tmp;
12390                                 MonoExceptionClause *clause;
12391
12392                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12393                                         clause = (MonoExceptionClause *)tmp->data;
12394                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12395                                         g_assert (tblock);
12396                                         link_bblock (cfg, cfg->cbb, tblock);
12397                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12398                                         ins->inst_target_bb = tblock;
12399                                         ins->inst_eh_block = clause;
12400                                         MONO_ADD_INS (cfg->cbb, ins);
12401                                         cfg->cbb->has_call_handler = 1;
12402                                         if (COMPILE_LLVM (cfg)) {
12403                                                 MonoBasicBlock *target_bb;
12404
12405                                                 /*
12406                                                  * Link the finally bblock with the target, since it will
12407                                                  * conceptually branch there.
12408                                                  */
12409                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12410                                                 GET_BBLOCK (cfg, target_bb, target);
12411                                                 link_bblock (cfg, tblock, target_bb);
12412                                         }
12413                                 }
12414                                 g_list_free (handlers);
12415                         }
12416
12417                         MONO_INST_NEW (cfg, ins, OP_BR);
12418                         MONO_ADD_INS (cfg->cbb, ins);
12419                         GET_BBLOCK (cfg, tblock, target);
12420                         link_bblock (cfg, cfg->cbb, tblock);
12421                         ins->inst_target_bb = tblock;
12422
12423                         start_new_bblock = 1;
12424
12425                         if (*ip == CEE_LEAVE)
12426                                 ip += 5;
12427                         else
12428                                 ip += 2;
12429
12430                         break;
12431                 }
12432
12433                         /*
12434                          * Mono specific opcodes
12435                          */
12436                 case MONO_CUSTOM_PREFIX: {
12437
12438                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12439
12440                         CHECK_OPSIZE (2);
12441                         switch (ip [1]) {
12442                         case CEE_MONO_ICALL: {
12443                                 gpointer func;
12444                                 MonoJitICallInfo *info;
12445
12446                                 token = read32 (ip + 2);
12447                                 func = mono_method_get_wrapper_data (method, token);
12448                                 info = mono_find_jit_icall_by_addr (func);
12449                                 if (!info)
12450                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12451                                 g_assert (info);
12452
12453                                 CHECK_STACK (info->sig->param_count);
12454                                 sp -= info->sig->param_count;
12455
12456                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12457                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12458                                         *sp++ = ins;
12459
12460                                 ip += 6;
12461                                 inline_costs += 10 * num_calls++;
12462
12463                                 break;
12464                         }
12465                         case CEE_MONO_LDPTR_CARD_TABLE:
12466                         case CEE_MONO_LDPTR_NURSERY_START:
12467                         case CEE_MONO_LDPTR_NURSERY_BITS:
12468                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12469                                 CHECK_STACK_OVF (1);
12470
12471                                 switch (ip [1]) {
12472                                         case CEE_MONO_LDPTR_CARD_TABLE:
12473                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12474                                                 break;
12475                                         case CEE_MONO_LDPTR_NURSERY_START:
12476                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12477                                                 break;
12478                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12479                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12480                                                 break;
12481                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12482                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12483                                                 break;
12484                                 }
12485
12486                                 *sp++ = ins;
12487                                 ip += 2;
12488                                 inline_costs += 10 * num_calls++;
12489                                 break;
12490                         }
12491                         case CEE_MONO_LDPTR: {
12492                                 gpointer ptr;
12493
12494                                 CHECK_STACK_OVF (1);
12495                                 CHECK_OPSIZE (6);
12496                                 token = read32 (ip + 2);
12497
12498                                 ptr = mono_method_get_wrapper_data (method, token);
12499                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12500                                 *sp++ = ins;
12501                                 ip += 6;
12502                                 inline_costs += 10 * num_calls++;
12503                                 /* Can't embed random pointers into AOT code */
12504                                 DISABLE_AOT (cfg);
12505                                 break;
12506                         }
12507                         case CEE_MONO_JIT_ICALL_ADDR: {
12508                                 MonoJitICallInfo *callinfo;
12509                                 gpointer ptr;
12510
12511                                 CHECK_STACK_OVF (1);
12512                                 CHECK_OPSIZE (6);
12513                                 token = read32 (ip + 2);
12514
12515                                 ptr = mono_method_get_wrapper_data (method, token);
12516                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12517                                 g_assert (callinfo);
12518                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12519                                 *sp++ = ins;
12520                                 ip += 6;
12521                                 inline_costs += 10 * num_calls++;
12522                                 break;
12523                         }
12524                         case CEE_MONO_ICALL_ADDR: {
12525                                 MonoMethod *cmethod;
12526                                 gpointer ptr;
12527
12528                                 CHECK_STACK_OVF (1);
12529                                 CHECK_OPSIZE (6);
12530                                 token = read32 (ip + 2);
12531
12532                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12533
12534                                 if (cfg->compile_aot) {
12535                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12536                                 } else {
12537                                         ptr = mono_lookup_internal_call (cmethod);
12538                                         g_assert (ptr);
12539                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12540                                 }
12541                                 *sp++ = ins;
12542                                 ip += 6;
12543                                 break;
12544                         }
12545                         case CEE_MONO_VTADDR: {
12546                                 MonoInst *src_var, *src;
12547
12548                                 CHECK_STACK (1);
12549                                 --sp;
12550
12551                                 // FIXME:
12552                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12553                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12554                                 *sp++ = src;
12555                                 ip += 2;
12556                                 break;
12557                         }
12558                         case CEE_MONO_NEWOBJ: {
12559                                 MonoInst *iargs [2];
12560
12561                                 CHECK_STACK_OVF (1);
12562                                 CHECK_OPSIZE (6);
12563                                 token = read32 (ip + 2);
12564                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12565                                 mono_class_init (klass);
12566                                 NEW_DOMAINCONST (cfg, iargs [0]);
12567                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12568                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12569                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12570                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12571                                 ip += 6;
12572                                 inline_costs += 10 * num_calls++;
12573                                 break;
12574                         }
12575                         case CEE_MONO_OBJADDR:
12576                                 CHECK_STACK (1);
12577                                 --sp;
12578                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12579                                 ins->dreg = alloc_ireg_mp (cfg);
12580                                 ins->sreg1 = sp [0]->dreg;
12581                                 ins->type = STACK_MP;
12582                                 MONO_ADD_INS (cfg->cbb, ins);
12583                                 *sp++ = ins;
12584                                 ip += 2;
12585                                 break;
12586                         case CEE_MONO_LDNATIVEOBJ:
12587                                 /*
12588                                  * Similar to LDOBJ, but instead load the unmanaged
12589                                  * representation of the vtype to the stack.
12590                                  */
12591                                 CHECK_STACK (1);
12592                                 CHECK_OPSIZE (6);
12593                                 --sp;
12594                                 token = read32 (ip + 2);
12595                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12596                                 g_assert (klass->valuetype);
12597                                 mono_class_init (klass);
12598
12599                                 {
12600                                         MonoInst *src, *dest, *temp;
12601
12602                                         src = sp [0];
12603                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12604                                         temp->backend.is_pinvoke = 1;
12605                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12606                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12607
12608                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12609                                         dest->type = STACK_VTYPE;
12610                                         dest->klass = klass;
12611
12612                                         *sp ++ = dest;
12613                                         ip += 6;
12614                                 }
12615                                 break;
12616                         case CEE_MONO_RETOBJ: {
12617                                 /*
12618                                  * Same as RET, but return the native representation of a vtype
12619                                  * to the caller.
12620                                  */
12621                                 g_assert (cfg->ret);
12622                                 g_assert (mono_method_signature (method)->pinvoke);
12623                                 CHECK_STACK (1);
12624                                 --sp;
12625
12626                                 CHECK_OPSIZE (6);
12627                                 token = read32 (ip + 2);
12628                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12629
12630                                 if (!cfg->vret_addr) {
12631                                         g_assert (cfg->ret_var_is_local);
12632
12633                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12634                                 } else {
12635                                         EMIT_NEW_RETLOADA (cfg, ins);
12636                                 }
12637                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12638
12639                                 if (sp != stack_start)
12640                                         UNVERIFIED;
12641
12642                                 MONO_INST_NEW (cfg, ins, OP_BR);
12643                                 ins->inst_target_bb = end_bblock;
12644                                 MONO_ADD_INS (cfg->cbb, ins);
12645                                 link_bblock (cfg, cfg->cbb, end_bblock);
12646                                 start_new_bblock = 1;
12647                                 ip += 6;
12648                                 break;
12649                         }
12650                         case CEE_MONO_CISINST:
12651                         case CEE_MONO_CCASTCLASS: {
12652                                 int token;
12653                                 CHECK_STACK (1);
12654                                 --sp;
12655                                 CHECK_OPSIZE (6);
12656                                 token = read32 (ip + 2);
12657                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12658                                 if (ip [1] == CEE_MONO_CISINST)
12659                                         ins = handle_cisinst (cfg, klass, sp [0]);
12660                                 else
12661                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12662                                 *sp++ = ins;
12663                                 ip += 6;
12664                                 break;
12665                         }
12666                         case CEE_MONO_SAVE_LMF:
12667                         case CEE_MONO_RESTORE_LMF:
12668                                 ip += 2;
12669                                 break;
12670                         case CEE_MONO_CLASSCONST:
12671                                 CHECK_STACK_OVF (1);
12672                                 CHECK_OPSIZE (6);
12673                                 token = read32 (ip + 2);
12674                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12675                                 *sp++ = ins;
12676                                 ip += 6;
12677                                 inline_costs += 10 * num_calls++;
12678                                 break;
12679                         case CEE_MONO_NOT_TAKEN:
12680                                 cfg->cbb->out_of_line = TRUE;
12681                                 ip += 2;
12682                                 break;
12683                         case CEE_MONO_TLS: {
12684                                 MonoTlsKey key;
12685
12686                                 CHECK_STACK_OVF (1);
12687                                 CHECK_OPSIZE (6);
12688                                 key = (MonoTlsKey)read32 (ip + 2);
12689                                 g_assert (key < TLS_KEY_NUM);
12690
12691                                 ins = mono_create_tls_get (cfg, key);
12692                                 if (!ins) {
12693                                         if (cfg->compile_aot) {
12694                                                 DISABLE_AOT (cfg);
12695                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12696                                                 ins->dreg = alloc_preg (cfg);
12697                                                 ins->type = STACK_PTR;
12698                                         } else {
12699                                                 g_assert_not_reached ();
12700                                         }
12701                                 }
12702                                 ins->type = STACK_PTR;
12703                                 MONO_ADD_INS (cfg->cbb, ins);
12704                                 *sp++ = ins;
12705                                 ip += 6;
12706                                 break;
12707                         }
12708                         case CEE_MONO_DYN_CALL: {
12709                                 MonoCallInst *call;
12710
12711                                 /* It would be easier to call a trampoline, but that would put an
12712                                  * extra frame on the stack, confusing exception handling. So
12713                                  * implement it inline using an opcode for now.
12714                                  */
12715
12716                                 if (!cfg->dyn_call_var) {
12717                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12718                                         /* prevent it from being register allocated */
12719                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12720                                 }
12721
12722                                 /* Has to use a call inst since it local regalloc expects it */
12723                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12724                                 ins = (MonoInst*)call;
12725                                 sp -= 2;
12726                                 ins->sreg1 = sp [0]->dreg;
12727                                 ins->sreg2 = sp [1]->dreg;
12728                                 MONO_ADD_INS (cfg->cbb, ins);
12729
12730                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12731
12732                                 ip += 2;
12733                                 inline_costs += 10 * num_calls++;
12734
12735                                 break;
12736                         }
12737                         case CEE_MONO_MEMORY_BARRIER: {
12738                                 CHECK_OPSIZE (6);
12739                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12740                                 ip += 6;
12741                                 break;
12742                         }
12743                         case CEE_MONO_ATOMIC_STORE_I4: {
12744                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12745
12746                                 CHECK_OPSIZE (6);
12747                                 CHECK_STACK (2);
12748                                 sp -= 2;
12749
12750                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12751                                 ins->dreg = sp [0]->dreg;
12752                                 ins->sreg1 = sp [1]->dreg;
12753                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12754                                 MONO_ADD_INS (cfg->cbb, ins);
12755
12756                                 ip += 6;
12757                                 break;
12758                         }
12759                         case CEE_MONO_JIT_ATTACH: {
12760                                 MonoInst *args [16], *domain_ins;
12761                                 MonoInst *ad_ins, *jit_tls_ins;
12762                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12763
12764                                 g_assert (!mono_threads_is_coop_enabled ());
12765
12766                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12767
12768                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12769                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12770
12771                                 ad_ins = mono_get_domain_intrinsic (cfg);
12772                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12773
12774                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12775                                         NEW_BBLOCK (cfg, next_bb);
12776                                         NEW_BBLOCK (cfg, call_bb);
12777
12778                                         if (cfg->compile_aot) {
12779                                                 /* AOT code is only used in the root domain */
12780                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12781                                         } else {
12782                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12783                                         }
12784                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12785                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12786                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12787
12788                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12789                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12790                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12791
12792                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12793                                         MONO_START_BB (cfg, call_bb);
12794                                 }
12795
12796                                 /* AOT code is only used in the root domain */
12797                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12798                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12799                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12800
12801                                 if (next_bb)
12802                                         MONO_START_BB (cfg, next_bb);
12803
12804
12805                                 ip += 2;
12806                                 break;
12807                         }
12808                         case CEE_MONO_JIT_DETACH: {
12809                                 MonoInst *args [16];
12810
12811                                 /* Restore the original domain */
12812                                 dreg = alloc_ireg (cfg);
12813                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12814                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12815                                 ip += 2;
12816                                 break;
12817                         }
12818                         case CEE_MONO_CALLI_EXTRA_ARG: {
12819                                 MonoInst *addr;
12820                                 MonoMethodSignature *fsig;
12821                                 MonoInst *arg;
12822
12823                                 /*
12824                                  * This is the same as CEE_CALLI, but passes an additional argument
12825                                  * to the called method in llvmonly mode.
12826                                  * This is only used by delegate invoke wrappers to call the
12827                                  * actual delegate method.
12828                                  */
12829                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12830
12831                                 CHECK_OPSIZE (6);
12832                                 token = read32 (ip + 2);
12833
12834                                 ins = NULL;
12835
12836                                 cmethod = NULL;
12837                                 CHECK_STACK (1);
12838                                 --sp;
12839                                 addr = *sp;
12840                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12841                                 CHECK_CFG_ERROR;
12842
12843                                 if (cfg->llvm_only)
12844                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12845
12846                                 n = fsig->param_count + fsig->hasthis + 1;
12847
12848                                 CHECK_STACK (n);
12849
12850                                 sp -= n;
12851                                 arg = sp [n - 1];
12852
12853                                 if (cfg->llvm_only) {
12854                                         /*
12855                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12856                                          * cconv. This is set by mono_init_delegate ().
12857                                          */
12858                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12859                                                 MonoInst *callee = addr;
12860                                                 MonoInst *call, *localloc_ins;
12861                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12862                                                 int low_bit_reg = alloc_preg (cfg);
12863
12864                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12865                                                 NEW_BBLOCK (cfg, end_bb);
12866
12867                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12868                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12869                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12870
12871                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12872                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12873                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12874                                                 /*
12875                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12876                                                  */
12877                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12878                                                 ins->dreg = alloc_preg (cfg);
12879                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12880                                                 MONO_ADD_INS (cfg->cbb, ins);
12881                                                 localloc_ins = ins;
12882                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12883                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12884                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12885
12886                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12887                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12888
12889                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12890                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12891                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12892                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12893                                                 ins->dreg = call->dreg;
12894
12895                                                 MONO_START_BB (cfg, end_bb);
12896                                         } else {
12897                                                 /* Caller uses a normal calling conv */
12898
12899                                                 MonoInst *callee = addr;
12900                                                 MonoInst *call, *localloc_ins;
12901                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12902                                                 int low_bit_reg = alloc_preg (cfg);
12903
12904                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12905                                                 NEW_BBLOCK (cfg, end_bb);
12906
12907                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12908                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12909                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12910
12911                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12912                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12913                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12914                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12915                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12916                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12917                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12918                                                 MONO_ADD_INS (cfg->cbb, addr);
12919                                                 /*
12920                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12921                                                  */
12922                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12923                                                 ins->dreg = alloc_preg (cfg);
12924                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12925                                                 MONO_ADD_INS (cfg->cbb, ins);
12926                                                 localloc_ins = ins;
12927                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12928                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12929                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12930
12931                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12932                                                 ins->dreg = call->dreg;
12933                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12934
12935                                                 MONO_START_BB (cfg, end_bb);
12936                                         }
12937                                 } else {
12938                                         /* Same as CEE_CALLI */
12939                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12940                                                 /*
12941                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12942                                                  */
12943                                                 MonoInst *callee = addr;
12944
12945                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12946                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12947                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12948                                         } else {
12949                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12950                                         }
12951                                 }
12952
12953                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12954                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12955
12956                                 CHECK_CFG_EXCEPTION;
12957
12958                                 ip += 6;
12959                                 ins_flag = 0;
12960                                 constrained_class = NULL;
12961                                 break;
12962                         }
12963                         case CEE_MONO_LDDOMAIN:
12964                                 CHECK_STACK_OVF (1);
12965                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12966                                 ip += 2;
12967                                 *sp++ = ins;
12968                                 break;
12969                         case CEE_MONO_GET_LAST_ERROR:
12970                                 CHECK_OPSIZE (2);
12971                                 CHECK_STACK_OVF (1);
12972
12973                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12974                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12975                                 ins->type = STACK_I4;
12976                                 MONO_ADD_INS (cfg->cbb, ins);
12977
12978                                 ip += 2;
12979                                 *sp++ = ins;
12980                                 break;
12981                         default:
12982                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12983                                 break;
12984                         }
12985                         break;
12986                 }
12987
12988                 case CEE_PREFIX1: {
12989                         CHECK_OPSIZE (2);
12990                         switch (ip [1]) {
12991                         case CEE_ARGLIST: {
12992                                 /* somewhat similar to LDTOKEN */
12993                                 MonoInst *addr, *vtvar;
12994                                 CHECK_STACK_OVF (1);
12995                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12996
12997                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12998                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12999
13000                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
13001                                 ins->type = STACK_VTYPE;
13002                                 ins->klass = mono_defaults.argumenthandle_class;
13003                                 *sp++ = ins;
13004                                 ip += 2;
13005                                 break;
13006                         }
13007                         case CEE_CEQ:
13008                         case CEE_CGT:
13009                         case CEE_CGT_UN:
13010                         case CEE_CLT:
13011                         case CEE_CLT_UN: {
13012                                 MonoInst *cmp, *arg1, *arg2;
13013
13014                                 CHECK_STACK (2);
13015                                 sp -= 2;
13016                                 arg1 = sp [0];
13017                                 arg2 = sp [1];
13018
13019                                 /*
13020                                  * The following transforms:
13021                                  *    CEE_CEQ    into OP_CEQ
13022                                  *    CEE_CGT    into OP_CGT
13023                                  *    CEE_CGT_UN into OP_CGT_UN
13024                                  *    CEE_CLT    into OP_CLT
13025                                  *    CEE_CLT_UN into OP_CLT_UN
13026                                  */
13027                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13028
13029                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13030                                 cmp->sreg1 = arg1->dreg;
13031                                 cmp->sreg2 = arg2->dreg;
13032                                 type_from_op (cfg, cmp, arg1, arg2);
13033                                 CHECK_TYPE (cmp);
13034                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13035                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13036                                         cmp->opcode = OP_LCOMPARE;
13037                                 else if (arg1->type == STACK_R4)
13038                                         cmp->opcode = OP_RCOMPARE;
13039                                 else if (arg1->type == STACK_R8)
13040                                         cmp->opcode = OP_FCOMPARE;
13041                                 else
13042                                         cmp->opcode = OP_ICOMPARE;
13043                                 MONO_ADD_INS (cfg->cbb, cmp);
13044                                 ins->type = STACK_I4;
13045                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13046                                 type_from_op (cfg, ins, arg1, arg2);
13047
13048                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13049                                         /*
13050                                          * The backends expect the fceq opcodes to do the
13051                                          * comparison too.
13052                                          */
13053                                         ins->sreg1 = cmp->sreg1;
13054                                         ins->sreg2 = cmp->sreg2;
13055                                         NULLIFY_INS (cmp);
13056                                 }
13057                                 MONO_ADD_INS (cfg->cbb, ins);
13058                                 *sp++ = ins;
13059                                 ip += 2;
13060                                 break;
13061                         }
13062                         case CEE_LDFTN: {
13063                                 MonoInst *argconst;
13064                                 MonoMethod *cil_method;
13065
13066                                 CHECK_STACK_OVF (1);
13067                                 CHECK_OPSIZE (6);
13068                                 n = read32 (ip + 2);
13069                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13070                                 CHECK_CFG_ERROR;
13071
13072                                 mono_class_init (cmethod->klass);
13073
13074                                 mono_save_token_info (cfg, image, n, cmethod);
13075
13076                                 context_used = mini_method_check_context_used (cfg, cmethod);
13077
13078                                 cil_method = cmethod;
13079                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13080                                         emit_method_access_failure (cfg, method, cil_method);
13081
13082                                 if (mono_security_core_clr_enabled ())
13083                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13084
13085                                 /*
13086                                  * Optimize the common case of ldftn+delegate creation
13087                                  */
13088                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13089                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13090                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13091                                                 MonoInst *target_ins, *handle_ins;
13092                                                 MonoMethod *invoke;
13093                                                 int invoke_context_used;
13094
13095                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13096                                                 if (!invoke || !mono_method_signature (invoke))
13097                                                         LOAD_ERROR;
13098
13099                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13100
13101                                                 target_ins = sp [-1];
13102
13103                                                 if (mono_security_core_clr_enabled ())
13104                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13105
13106                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13107                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13108                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13109                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13110                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13111                                                         }
13112                                                 }
13113
13114                                                 /* FIXME: SGEN support */
13115                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13116                                                         ip += 6;
13117                                                         if (cfg->verbose_level > 3)
13118                                                                 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));
13119                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13120                                                                 sp --;
13121                                                                 *sp = handle_ins;
13122                                                                 CHECK_CFG_EXCEPTION;
13123                                                                 ip += 5;
13124                                                                 sp ++;
13125                                                                 break;
13126                                                         }
13127                                                         ip -= 6;
13128                                                 }
13129                                         }
13130                                 }
13131
13132                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13133                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13134                                 *sp++ = ins;
13135
13136                                 ip += 6;
13137                                 inline_costs += 10 * num_calls++;
13138                                 break;
13139                         }
13140                         case CEE_LDVIRTFTN: {
13141                                 MonoInst *args [2];
13142
13143                                 CHECK_STACK (1);
13144                                 CHECK_OPSIZE (6);
13145                                 n = read32 (ip + 2);
13146                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13147                                 CHECK_CFG_ERROR;
13148
13149                                 mono_class_init (cmethod->klass);
13150
13151                                 context_used = mini_method_check_context_used (cfg, cmethod);
13152
13153                                 if (mono_security_core_clr_enabled ())
13154                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13155
13156                                 /*
13157                                  * Optimize the common case of ldvirtftn+delegate creation
13158                                  */
13159                                 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)) {
13160                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13161                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13162                                                 MonoInst *target_ins, *handle_ins;
13163                                                 MonoMethod *invoke;
13164                                                 int invoke_context_used;
13165                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13166
13167                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13168                                                 if (!invoke || !mono_method_signature (invoke))
13169                                                         LOAD_ERROR;
13170
13171                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13172
13173                                                 target_ins = sp [-1];
13174
13175                                                 if (mono_security_core_clr_enabled ())
13176                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13177
13178                                                 /* FIXME: SGEN support */
13179                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13180                                                         ip += 6;
13181                                                         if (cfg->verbose_level > 3)
13182                                                                 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));
13183                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13184                                                                 sp -= 2;
13185                                                                 *sp = handle_ins;
13186                                                                 CHECK_CFG_EXCEPTION;
13187                                                                 ip += 5;
13188                                                                 sp ++;
13189                                                                 break;
13190                                                         }
13191                                                         ip -= 6;
13192                                                 }
13193                                         }
13194                                 }
13195
13196                                 --sp;
13197                                 args [0] = *sp;
13198
13199                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13200                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13201
13202                                 if (context_used)
13203                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13204                                 else
13205                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13206
13207                                 ip += 6;
13208                                 inline_costs += 10 * num_calls++;
13209                                 break;
13210                         }
13211                         case CEE_LDARG:
13212                                 CHECK_STACK_OVF (1);
13213                                 CHECK_OPSIZE (4);
13214                                 n = read16 (ip + 2);
13215                                 CHECK_ARG (n);
13216                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13217                                 *sp++ = ins;
13218                                 ip += 4;
13219                                 break;
13220                         case CEE_LDARGA:
13221                                 CHECK_STACK_OVF (1);
13222                                 CHECK_OPSIZE (4);
13223                                 n = read16 (ip + 2);
13224                                 CHECK_ARG (n);
13225                                 NEW_ARGLOADA (cfg, ins, n);
13226                                 MONO_ADD_INS (cfg->cbb, ins);
13227                                 *sp++ = ins;
13228                                 ip += 4;
13229                                 break;
13230                         case CEE_STARG:
13231                                 CHECK_STACK (1);
13232                                 --sp;
13233                                 CHECK_OPSIZE (4);
13234                                 n = read16 (ip + 2);
13235                                 CHECK_ARG (n);
13236                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13237                                         UNVERIFIED;
13238                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13239                                 ip += 4;
13240                                 break;
13241                         case CEE_LDLOC:
13242                                 CHECK_STACK_OVF (1);
13243                                 CHECK_OPSIZE (4);
13244                                 n = read16 (ip + 2);
13245                                 CHECK_LOCAL (n);
13246                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13247                                 *sp++ = ins;
13248                                 ip += 4;
13249                                 break;
13250                         case CEE_LDLOCA: {
13251                                 unsigned char *tmp_ip;
13252                                 CHECK_STACK_OVF (1);
13253                                 CHECK_OPSIZE (4);
13254                                 n = read16 (ip + 2);
13255                                 CHECK_LOCAL (n);
13256
13257                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13258                                         ip = tmp_ip;
13259                                         inline_costs += 1;
13260                                         break;
13261                                 }
13262
13263                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13264                                 *sp++ = ins;
13265                                 ip += 4;
13266                                 break;
13267                         }
13268                         case CEE_STLOC:
13269                                 CHECK_STACK (1);
13270                                 --sp;
13271                                 CHECK_OPSIZE (4);
13272                                 n = read16 (ip + 2);
13273                                 CHECK_LOCAL (n);
13274                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13275                                         UNVERIFIED;
13276                                 emit_stloc_ir (cfg, sp, header, n);
13277                                 ip += 4;
13278                                 inline_costs += 1;
13279                                 break;
13280                         case CEE_LOCALLOC: {
13281                                 CHECK_STACK (1);
13282                                 MonoBasicBlock *non_zero_bb, *end_bb;
13283                                 int alloc_ptr = alloc_preg (cfg);
13284                                 --sp;
13285                                 if (sp != stack_start)
13286                                         UNVERIFIED;
13287                                 if (cfg->method != method)
13288                                         /*
13289                                          * Inlining this into a loop in a parent could lead to
13290                                          * stack overflows which is different behavior than the
13291                                          * non-inlined case, thus disable inlining in this case.
13292                                          */
13293                                         INLINE_FAILURE("localloc");
13294
13295                                 NEW_BBLOCK (cfg, non_zero_bb);
13296                                 NEW_BBLOCK (cfg, end_bb);
13297
13298                                 /* if size != zero */
13299                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
13300                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
13301
13302                                 //size is zero, so result is NULL
13303                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
13304                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
13305
13306                                 MONO_START_BB (cfg, non_zero_bb);
13307                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13308                                 ins->dreg = alloc_ptr;
13309                                 ins->sreg1 = sp [0]->dreg;
13310                                 ins->type = STACK_PTR;
13311                                 MONO_ADD_INS (cfg->cbb, ins);
13312
13313                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13314                                 if (init_locals)
13315                                         ins->flags |= MONO_INST_INIT;
13316
13317                                 MONO_START_BB (cfg, end_bb);
13318                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
13319                                 ins->type = STACK_PTR;
13320
13321                                 *sp++ = ins;
13322                                 ip += 2;
13323                                 break;
13324                         }
13325                         case CEE_ENDFILTER: {
13326                                 MonoExceptionClause *clause, *nearest;
13327                                 int cc;
13328
13329                                 CHECK_STACK (1);
13330                                 --sp;
13331                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13332                                         UNVERIFIED;
13333                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13334                                 ins->sreg1 = (*sp)->dreg;
13335                                 MONO_ADD_INS (cfg->cbb, ins);
13336                                 start_new_bblock = 1;
13337                                 ip += 2;
13338
13339                                 nearest = NULL;
13340                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13341                                         clause = &header->clauses [cc];
13342                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13343                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13344                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13345                                                 nearest = clause;
13346                                 }
13347                                 g_assert (nearest);
13348                                 if ((ip - header->code) != nearest->handler_offset)
13349                                         UNVERIFIED;
13350
13351                                 break;
13352                         }
13353                         case CEE_UNALIGNED_:
13354                                 ins_flag |= MONO_INST_UNALIGNED;
13355                                 /* FIXME: record alignment? we can assume 1 for now */
13356                                 CHECK_OPSIZE (3);
13357                                 ip += 3;
13358                                 break;
13359                         case CEE_VOLATILE_:
13360                                 ins_flag |= MONO_INST_VOLATILE;
13361                                 ip += 2;
13362                                 break;
13363                         case CEE_TAIL_:
13364                                 ins_flag   |= MONO_INST_TAILCALL;
13365                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13366                                 /* Can't inline tail calls at this time */
13367                                 inline_costs += 100000;
13368                                 ip += 2;
13369                                 break;
13370                         case CEE_INITOBJ:
13371                                 CHECK_STACK (1);
13372                                 --sp;
13373                                 CHECK_OPSIZE (6);
13374                                 token = read32 (ip + 2);
13375                                 klass = mini_get_class (method, token, generic_context);
13376                                 CHECK_TYPELOAD (klass);
13377                                 if (generic_class_is_reference_type (cfg, klass))
13378                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13379                                 else
13380                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13381                                 ip += 6;
13382                                 inline_costs += 1;
13383                                 break;
13384                         case CEE_CONSTRAINED_:
13385                                 CHECK_OPSIZE (6);
13386                                 token = read32 (ip + 2);
13387                                 constrained_class = mini_get_class (method, token, generic_context);
13388                                 CHECK_TYPELOAD (constrained_class);
13389                                 ip += 6;
13390                                 break;
13391                         case CEE_CPBLK:
13392                         case CEE_INITBLK: {
13393                                 MonoInst *iargs [3];
13394                                 CHECK_STACK (3);
13395                                 sp -= 3;
13396
13397                                 /* Skip optimized paths for volatile operations. */
13398                                 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)) {
13399                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13400                                 } 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)) {
13401                                         /* emit_memset only works when val == 0 */
13402                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13403                                 } else {
13404                                         MonoInst *call;
13405                                         iargs [0] = sp [0];
13406                                         iargs [1] = sp [1];
13407                                         iargs [2] = sp [2];
13408                                         if (ip [1] == CEE_CPBLK) {
13409                                                 /*
13410                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13411                                                  * and release barriers for cpblk. It is technically both a load and
13412                                                  * store operation, so it seems like that's the sensible thing to do.
13413                                                  *
13414                                                  * FIXME: We emit full barriers on both sides of the operation for
13415                                                  * simplicity. We should have a separate atomic memcpy method instead.
13416                                                  */
13417                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13418
13419                                                 if (ins_flag & MONO_INST_VOLATILE)
13420                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13421
13422                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13423                                                 call->flags |= ins_flag;
13424
13425                                                 if (ins_flag & MONO_INST_VOLATILE)
13426                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13427                                         } else {
13428                                                 MonoMethod *memset_method = get_memset_method ();
13429                                                 if (ins_flag & MONO_INST_VOLATILE) {
13430                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13431                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13432                                                 }
13433                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13434                                                 call->flags |= ins_flag;
13435                                         }
13436                                 }
13437                                 ip += 2;
13438                                 ins_flag = 0;
13439                                 inline_costs += 1;
13440                                 break;
13441                         }
13442                         case CEE_NO_:
13443                                 CHECK_OPSIZE (3);
13444                                 if (ip [2] & 0x1)
13445                                         ins_flag |= MONO_INST_NOTYPECHECK;
13446                                 if (ip [2] & 0x2)
13447                                         ins_flag |= MONO_INST_NORANGECHECK;
13448                                 /* we ignore the no-nullcheck for now since we
13449                                  * really do it explicitly only when doing callvirt->call
13450                                  */
13451                                 ip += 3;
13452                                 break;
13453                         case CEE_RETHROW: {
13454                                 MonoInst *load;
13455                                 int handler_offset = -1;
13456
13457                                 for (i = 0; i < header->num_clauses; ++i) {
13458                                         MonoExceptionClause *clause = &header->clauses [i];
13459                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13460                                                 handler_offset = clause->handler_offset;
13461                                                 break;
13462                                         }
13463                                 }
13464
13465                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13466
13467                                 if (handler_offset == -1)
13468                                         UNVERIFIED;
13469
13470                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13471                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13472                                 ins->sreg1 = load->dreg;
13473                                 MONO_ADD_INS (cfg->cbb, ins);
13474
13475                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13476                                 MONO_ADD_INS (cfg->cbb, ins);
13477
13478                                 sp = stack_start;
13479                                 link_bblock (cfg, cfg->cbb, end_bblock);
13480                                 start_new_bblock = 1;
13481                                 ip += 2;
13482                                 break;
13483                         }
13484                         case CEE_SIZEOF: {
13485                                 guint32 val;
13486                                 int ialign;
13487
13488                                 CHECK_STACK_OVF (1);
13489                                 CHECK_OPSIZE (6);
13490                                 token = read32 (ip + 2);
13491                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13492                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13493                                         CHECK_CFG_ERROR;
13494
13495                                         val = mono_type_size (type, &ialign);
13496                                 } else {
13497                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13498                                         CHECK_TYPELOAD (klass);
13499
13500                                         val = mono_type_size (&klass->byval_arg, &ialign);
13501
13502                                         if (mini_is_gsharedvt_klass (klass))
13503                                                 GSHAREDVT_FAILURE (*ip);
13504                                 }
13505                                 EMIT_NEW_ICONST (cfg, ins, val);
13506                                 *sp++= ins;
13507                                 ip += 6;
13508                                 break;
13509                         }
13510                         case CEE_REFANYTYPE: {
13511                                 MonoInst *src_var, *src;
13512
13513                                 GSHAREDVT_FAILURE (*ip);
13514
13515                                 CHECK_STACK (1);
13516                                 --sp;
13517
13518                                 // FIXME:
13519                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13520                                 if (!src_var)
13521                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13522                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13523                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13524                                 *sp++ = ins;
13525                                 ip += 2;
13526                                 break;
13527                         }
13528                         case CEE_READONLY_:
13529                                 readonly = TRUE;
13530                                 ip += 2;
13531                                 break;
13532
13533                         case CEE_UNUSED56:
13534                         case CEE_UNUSED57:
13535                         case CEE_UNUSED70:
13536                         case CEE_UNUSED:
13537                         case CEE_UNUSED99:
13538                                 UNVERIFIED;
13539
13540                         default:
13541                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13542                                 UNVERIFIED;
13543                         }
13544                         break;
13545                 }
13546                 case CEE_UNUSED58:
13547                 case CEE_UNUSED1:
13548                         UNVERIFIED;
13549
13550                 default:
13551                         g_warning ("opcode 0x%02x not handled", *ip);
13552                         UNVERIFIED;
13553                 }
13554         }
13555         if (start_new_bblock != 1)
13556                 UNVERIFIED;
13557
13558         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13559         if (cfg->cbb->next_bb) {
13560                 /* This could already be set because of inlining, #693905 */
13561                 MonoBasicBlock *bb = cfg->cbb;
13562
13563                 while (bb->next_bb)
13564                         bb = bb->next_bb;
13565                 bb->next_bb = end_bblock;
13566         } else {
13567                 cfg->cbb->next_bb = end_bblock;
13568         }
13569
13570         if (cfg->method == method && cfg->domainvar) {
13571                 MonoInst *store;
13572                 MonoInst *get_domain;
13573
13574                 cfg->cbb = init_localsbb;
13575
13576                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13577                         MONO_ADD_INS (cfg->cbb, get_domain);
13578                 } else {
13579                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13580                 }
13581                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13582                 MONO_ADD_INS (cfg->cbb, store);
13583         }
13584
13585 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13586         if (cfg->compile_aot)
13587                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13588                 mono_get_got_var (cfg);
13589 #endif
13590
13591         if (cfg->method == method && cfg->got_var)
13592                 mono_emit_load_got_addr (cfg);
13593
13594         if (init_localsbb) {
13595                 cfg->cbb = init_localsbb;
13596                 cfg->ip = NULL;
13597                 for (i = 0; i < header->num_locals; ++i) {
13598                         emit_init_local (cfg, i, header->locals [i], init_locals);
13599                 }
13600         }
13601
13602         if (cfg->init_ref_vars && cfg->method == method) {
13603                 /* Emit initialization for ref vars */
13604                 // FIXME: Avoid duplication initialization for IL locals.
13605                 for (i = 0; i < cfg->num_varinfo; ++i) {
13606                         MonoInst *ins = cfg->varinfo [i];
13607
13608                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13609                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13610                 }
13611         }
13612
13613         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13614                 cfg->cbb = init_localsbb;
13615                 emit_push_lmf (cfg);
13616         }
13617
13618         cfg->cbb = init_localsbb;
13619         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13620
13621         if (seq_points) {
13622                 MonoBasicBlock *bb;
13623
13624                 /*
13625                  * Make seq points at backward branch targets interruptable.
13626                  */
13627                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13628                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13629                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13630         }
13631
13632         /* Add a sequence point for method entry/exit events */
13633         if (seq_points && cfg->gen_sdb_seq_points) {
13634                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13635                 MONO_ADD_INS (init_localsbb, ins);
13636                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13637                 MONO_ADD_INS (cfg->bb_exit, ins);
13638         }
13639
13640         /*
13641          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13642          * the code they refer to was dead (#11880).
13643          */
13644         if (sym_seq_points) {
13645                 for (i = 0; i < header->code_size; ++i) {
13646                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13647                                 MonoInst *ins;
13648
13649                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13650                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13651                         }
13652                 }
13653         }
13654
13655         cfg->ip = NULL;
13656
13657         if (cfg->method == method) {
13658                 MonoBasicBlock *bb;
13659                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13660                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13661                         if (cfg->spvars)
13662                                 mono_create_spvar_for_region (cfg, bb->region);
13663                         if (cfg->verbose_level > 2)
13664                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13665                 }
13666         } else {
13667                 MonoBasicBlock *bb;
13668                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13669                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13670                         bb->real_offset = inline_offset;
13671                 }
13672         }
13673
13674         if (inline_costs < 0) {
13675                 char *mname;
13676
13677                 /* Method is too large */
13678                 mname = mono_method_full_name (method, TRUE);
13679                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13680                 g_free (mname);
13681         }
13682
13683         if ((cfg->verbose_level > 2) && (cfg->method == method))
13684                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13685
13686         goto cleanup;
13687
13688 mono_error_exit:
13689         g_assert (!mono_error_ok (&cfg->error));
13690         goto cleanup;
13691
13692  exception_exit:
13693         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13694         goto cleanup;
13695
13696  unverified:
13697         set_exception_type_from_invalid_il (cfg, method, ip);
13698         goto cleanup;
13699
13700  cleanup:
13701         g_slist_free (class_inits);
13702         mono_basic_block_free (original_bb);
13703         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13704         if (cfg->exception_type)
13705                 return -1;
13706         else
13707                 return inline_costs;
13708 }
13709
13710 static int
13711 store_membase_reg_to_store_membase_imm (int opcode)
13712 {
13713         switch (opcode) {
13714         case OP_STORE_MEMBASE_REG:
13715                 return OP_STORE_MEMBASE_IMM;
13716         case OP_STOREI1_MEMBASE_REG:
13717                 return OP_STOREI1_MEMBASE_IMM;
13718         case OP_STOREI2_MEMBASE_REG:
13719                 return OP_STOREI2_MEMBASE_IMM;
13720         case OP_STOREI4_MEMBASE_REG:
13721                 return OP_STOREI4_MEMBASE_IMM;
13722         case OP_STOREI8_MEMBASE_REG:
13723                 return OP_STOREI8_MEMBASE_IMM;
13724         default:
13725                 g_assert_not_reached ();
13726         }
13727
13728         return -1;
13729 }
13730
13731 int
13732 mono_op_to_op_imm (int opcode)
13733 {
13734         switch (opcode) {
13735         case OP_IADD:
13736                 return OP_IADD_IMM;
13737         case OP_ISUB:
13738                 return OP_ISUB_IMM;
13739         case OP_IDIV:
13740                 return OP_IDIV_IMM;
13741         case OP_IDIV_UN:
13742                 return OP_IDIV_UN_IMM;
13743         case OP_IREM:
13744                 return OP_IREM_IMM;
13745         case OP_IREM_UN:
13746                 return OP_IREM_UN_IMM;
13747         case OP_IMUL:
13748                 return OP_IMUL_IMM;
13749         case OP_IAND:
13750                 return OP_IAND_IMM;
13751         case OP_IOR:
13752                 return OP_IOR_IMM;
13753         case OP_IXOR:
13754                 return OP_IXOR_IMM;
13755         case OP_ISHL:
13756                 return OP_ISHL_IMM;
13757         case OP_ISHR:
13758                 return OP_ISHR_IMM;
13759         case OP_ISHR_UN:
13760                 return OP_ISHR_UN_IMM;
13761
13762         case OP_LADD:
13763                 return OP_LADD_IMM;
13764         case OP_LSUB:
13765                 return OP_LSUB_IMM;
13766         case OP_LAND:
13767                 return OP_LAND_IMM;
13768         case OP_LOR:
13769                 return OP_LOR_IMM;
13770         case OP_LXOR:
13771                 return OP_LXOR_IMM;
13772         case OP_LSHL:
13773                 return OP_LSHL_IMM;
13774         case OP_LSHR:
13775                 return OP_LSHR_IMM;
13776         case OP_LSHR_UN:
13777                 return OP_LSHR_UN_IMM;
13778 #if SIZEOF_REGISTER == 8
13779         case OP_LREM:
13780                 return OP_LREM_IMM;
13781 #endif
13782
13783         case OP_COMPARE:
13784                 return OP_COMPARE_IMM;
13785         case OP_ICOMPARE:
13786                 return OP_ICOMPARE_IMM;
13787         case OP_LCOMPARE:
13788                 return OP_LCOMPARE_IMM;
13789
13790         case OP_STORE_MEMBASE_REG:
13791                 return OP_STORE_MEMBASE_IMM;
13792         case OP_STOREI1_MEMBASE_REG:
13793                 return OP_STOREI1_MEMBASE_IMM;
13794         case OP_STOREI2_MEMBASE_REG:
13795                 return OP_STOREI2_MEMBASE_IMM;
13796         case OP_STOREI4_MEMBASE_REG:
13797                 return OP_STOREI4_MEMBASE_IMM;
13798
13799 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13800         case OP_X86_PUSH:
13801                 return OP_X86_PUSH_IMM;
13802         case OP_X86_COMPARE_MEMBASE_REG:
13803                 return OP_X86_COMPARE_MEMBASE_IMM;
13804 #endif
13805 #if defined(TARGET_AMD64)
13806         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13807                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13808 #endif
13809         case OP_VOIDCALL_REG:
13810                 return OP_VOIDCALL;
13811         case OP_CALL_REG:
13812                 return OP_CALL;
13813         case OP_LCALL_REG:
13814                 return OP_LCALL;
13815         case OP_FCALL_REG:
13816                 return OP_FCALL;
13817         case OP_LOCALLOC:
13818                 return OP_LOCALLOC_IMM;
13819         }
13820
13821         return -1;
13822 }
13823
13824 static int
13825 ldind_to_load_membase (int opcode)
13826 {
13827         switch (opcode) {
13828         case CEE_LDIND_I1:
13829                 return OP_LOADI1_MEMBASE;
13830         case CEE_LDIND_U1:
13831                 return OP_LOADU1_MEMBASE;
13832         case CEE_LDIND_I2:
13833                 return OP_LOADI2_MEMBASE;
13834         case CEE_LDIND_U2:
13835                 return OP_LOADU2_MEMBASE;
13836         case CEE_LDIND_I4:
13837                 return OP_LOADI4_MEMBASE;
13838         case CEE_LDIND_U4:
13839                 return OP_LOADU4_MEMBASE;
13840         case CEE_LDIND_I:
13841                 return OP_LOAD_MEMBASE;
13842         case CEE_LDIND_REF:
13843                 return OP_LOAD_MEMBASE;
13844         case CEE_LDIND_I8:
13845                 return OP_LOADI8_MEMBASE;
13846         case CEE_LDIND_R4:
13847                 return OP_LOADR4_MEMBASE;
13848         case CEE_LDIND_R8:
13849                 return OP_LOADR8_MEMBASE;
13850         default:
13851                 g_assert_not_reached ();
13852         }
13853
13854         return -1;
13855 }
13856
13857 static int
13858 stind_to_store_membase (int opcode)
13859 {
13860         switch (opcode) {
13861         case CEE_STIND_I1:
13862                 return OP_STOREI1_MEMBASE_REG;
13863         case CEE_STIND_I2:
13864                 return OP_STOREI2_MEMBASE_REG;
13865         case CEE_STIND_I4:
13866                 return OP_STOREI4_MEMBASE_REG;
13867         case CEE_STIND_I:
13868         case CEE_STIND_REF:
13869                 return OP_STORE_MEMBASE_REG;
13870         case CEE_STIND_I8:
13871                 return OP_STOREI8_MEMBASE_REG;
13872         case CEE_STIND_R4:
13873                 return OP_STORER4_MEMBASE_REG;
13874         case CEE_STIND_R8:
13875                 return OP_STORER8_MEMBASE_REG;
13876         default:
13877                 g_assert_not_reached ();
13878         }
13879
13880         return -1;
13881 }
13882
13883 int
13884 mono_load_membase_to_load_mem (int opcode)
13885 {
13886         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13887 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13888         switch (opcode) {
13889         case OP_LOAD_MEMBASE:
13890                 return OP_LOAD_MEM;
13891         case OP_LOADU1_MEMBASE:
13892                 return OP_LOADU1_MEM;
13893         case OP_LOADU2_MEMBASE:
13894                 return OP_LOADU2_MEM;
13895         case OP_LOADI4_MEMBASE:
13896                 return OP_LOADI4_MEM;
13897         case OP_LOADU4_MEMBASE:
13898                 return OP_LOADU4_MEM;
13899 #if SIZEOF_REGISTER == 8
13900         case OP_LOADI8_MEMBASE:
13901                 return OP_LOADI8_MEM;
13902 #endif
13903         }
13904 #endif
13905
13906         return -1;
13907 }
13908
13909 static inline int
13910 op_to_op_dest_membase (int store_opcode, int opcode)
13911 {
13912 #if defined(TARGET_X86)
13913         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13914                 return -1;
13915
13916         switch (opcode) {
13917         case OP_IADD:
13918                 return OP_X86_ADD_MEMBASE_REG;
13919         case OP_ISUB:
13920                 return OP_X86_SUB_MEMBASE_REG;
13921         case OP_IAND:
13922                 return OP_X86_AND_MEMBASE_REG;
13923         case OP_IOR:
13924                 return OP_X86_OR_MEMBASE_REG;
13925         case OP_IXOR:
13926                 return OP_X86_XOR_MEMBASE_REG;
13927         case OP_ADD_IMM:
13928         case OP_IADD_IMM:
13929                 return OP_X86_ADD_MEMBASE_IMM;
13930         case OP_SUB_IMM:
13931         case OP_ISUB_IMM:
13932                 return OP_X86_SUB_MEMBASE_IMM;
13933         case OP_AND_IMM:
13934         case OP_IAND_IMM:
13935                 return OP_X86_AND_MEMBASE_IMM;
13936         case OP_OR_IMM:
13937         case OP_IOR_IMM:
13938                 return OP_X86_OR_MEMBASE_IMM;
13939         case OP_XOR_IMM:
13940         case OP_IXOR_IMM:
13941                 return OP_X86_XOR_MEMBASE_IMM;
13942         case OP_MOVE:
13943                 return OP_NOP;
13944         }
13945 #endif
13946
13947 #if defined(TARGET_AMD64)
13948         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13949                 return -1;
13950
13951         switch (opcode) {
13952         case OP_IADD:
13953                 return OP_X86_ADD_MEMBASE_REG;
13954         case OP_ISUB:
13955                 return OP_X86_SUB_MEMBASE_REG;
13956         case OP_IAND:
13957                 return OP_X86_AND_MEMBASE_REG;
13958         case OP_IOR:
13959                 return OP_X86_OR_MEMBASE_REG;
13960         case OP_IXOR:
13961                 return OP_X86_XOR_MEMBASE_REG;
13962         case OP_IADD_IMM:
13963                 return OP_X86_ADD_MEMBASE_IMM;
13964         case OP_ISUB_IMM:
13965                 return OP_X86_SUB_MEMBASE_IMM;
13966         case OP_IAND_IMM:
13967                 return OP_X86_AND_MEMBASE_IMM;
13968         case OP_IOR_IMM:
13969                 return OP_X86_OR_MEMBASE_IMM;
13970         case OP_IXOR_IMM:
13971                 return OP_X86_XOR_MEMBASE_IMM;
13972         case OP_LADD:
13973                 return OP_AMD64_ADD_MEMBASE_REG;
13974         case OP_LSUB:
13975                 return OP_AMD64_SUB_MEMBASE_REG;
13976         case OP_LAND:
13977                 return OP_AMD64_AND_MEMBASE_REG;
13978         case OP_LOR:
13979                 return OP_AMD64_OR_MEMBASE_REG;
13980         case OP_LXOR:
13981                 return OP_AMD64_XOR_MEMBASE_REG;
13982         case OP_ADD_IMM:
13983         case OP_LADD_IMM:
13984                 return OP_AMD64_ADD_MEMBASE_IMM;
13985         case OP_SUB_IMM:
13986         case OP_LSUB_IMM:
13987                 return OP_AMD64_SUB_MEMBASE_IMM;
13988         case OP_AND_IMM:
13989         case OP_LAND_IMM:
13990                 return OP_AMD64_AND_MEMBASE_IMM;
13991         case OP_OR_IMM:
13992         case OP_LOR_IMM:
13993                 return OP_AMD64_OR_MEMBASE_IMM;
13994         case OP_XOR_IMM:
13995         case OP_LXOR_IMM:
13996                 return OP_AMD64_XOR_MEMBASE_IMM;
13997         case OP_MOVE:
13998                 return OP_NOP;
13999         }
14000 #endif
14001
14002         return -1;
14003 }
14004
14005 static inline int
14006 op_to_op_store_membase (int store_opcode, int opcode)
14007 {
14008 #if defined(TARGET_X86) || defined(TARGET_AMD64)
14009         switch (opcode) {
14010         case OP_ICEQ:
14011                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14012                         return OP_X86_SETEQ_MEMBASE;
14013         case OP_CNE:
14014                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14015                         return OP_X86_SETNE_MEMBASE;
14016         }
14017 #endif
14018
14019         return -1;
14020 }
14021
14022 static inline int
14023 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14024 {
14025 #ifdef TARGET_X86
14026         /* FIXME: This has sign extension issues */
14027         /*
14028         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14029                 return OP_X86_COMPARE_MEMBASE8_IMM;
14030         */
14031
14032         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14033                 return -1;
14034
14035         switch (opcode) {
14036         case OP_X86_PUSH:
14037                 return OP_X86_PUSH_MEMBASE;
14038         case OP_COMPARE_IMM:
14039         case OP_ICOMPARE_IMM:
14040                 return OP_X86_COMPARE_MEMBASE_IMM;
14041         case OP_COMPARE:
14042         case OP_ICOMPARE:
14043                 return OP_X86_COMPARE_MEMBASE_REG;
14044         }
14045 #endif
14046
14047 #ifdef TARGET_AMD64
14048         /* FIXME: This has sign extension issues */
14049         /*
14050         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14051                 return OP_X86_COMPARE_MEMBASE8_IMM;
14052         */
14053
14054         switch (opcode) {
14055         case OP_X86_PUSH:
14056                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14057                         return OP_X86_PUSH_MEMBASE;
14058                 break;
14059                 /* FIXME: This only works for 32 bit immediates
14060         case OP_COMPARE_IMM:
14061         case OP_LCOMPARE_IMM:
14062                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14063                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14064                 */
14065         case OP_ICOMPARE_IMM:
14066                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14067                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14068                 break;
14069         case OP_COMPARE:
14070         case OP_LCOMPARE:
14071                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14072                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14073                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14074                         return OP_AMD64_COMPARE_MEMBASE_REG;
14075                 break;
14076         case OP_ICOMPARE:
14077                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14078                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14079                 break;
14080         }
14081 #endif
14082
14083         return -1;
14084 }
14085
14086 static inline int
14087 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14088 {
14089 #ifdef TARGET_X86
14090         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14091                 return -1;
14092
14093         switch (opcode) {
14094         case OP_COMPARE:
14095         case OP_ICOMPARE:
14096                 return OP_X86_COMPARE_REG_MEMBASE;
14097         case OP_IADD:
14098                 return OP_X86_ADD_REG_MEMBASE;
14099         case OP_ISUB:
14100                 return OP_X86_SUB_REG_MEMBASE;
14101         case OP_IAND:
14102                 return OP_X86_AND_REG_MEMBASE;
14103         case OP_IOR:
14104                 return OP_X86_OR_REG_MEMBASE;
14105         case OP_IXOR:
14106                 return OP_X86_XOR_REG_MEMBASE;
14107         }
14108 #endif
14109
14110 #ifdef TARGET_AMD64
14111         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14112                 switch (opcode) {
14113                 case OP_ICOMPARE:
14114                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14115                 case OP_IADD:
14116                         return OP_X86_ADD_REG_MEMBASE;
14117                 case OP_ISUB:
14118                         return OP_X86_SUB_REG_MEMBASE;
14119                 case OP_IAND:
14120                         return OP_X86_AND_REG_MEMBASE;
14121                 case OP_IOR:
14122                         return OP_X86_OR_REG_MEMBASE;
14123                 case OP_IXOR:
14124                         return OP_X86_XOR_REG_MEMBASE;
14125                 }
14126         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14127                 switch (opcode) {
14128                 case OP_COMPARE:
14129                 case OP_LCOMPARE:
14130                         return OP_AMD64_COMPARE_REG_MEMBASE;
14131                 case OP_LADD:
14132                         return OP_AMD64_ADD_REG_MEMBASE;
14133                 case OP_LSUB:
14134                         return OP_AMD64_SUB_REG_MEMBASE;
14135                 case OP_LAND:
14136                         return OP_AMD64_AND_REG_MEMBASE;
14137                 case OP_LOR:
14138                         return OP_AMD64_OR_REG_MEMBASE;
14139                 case OP_LXOR:
14140                         return OP_AMD64_XOR_REG_MEMBASE;
14141                 }
14142         }
14143 #endif
14144
14145         return -1;
14146 }
14147
14148 int
14149 mono_op_to_op_imm_noemul (int opcode)
14150 {
14151         switch (opcode) {
14152 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14153         case OP_LSHR:
14154         case OP_LSHL:
14155         case OP_LSHR_UN:
14156                 return -1;
14157 #endif
14158 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14159         case OP_IDIV:
14160         case OP_IDIV_UN:
14161         case OP_IREM:
14162         case OP_IREM_UN:
14163                 return -1;
14164 #endif
14165 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14166         case OP_IMUL:
14167                 return -1;
14168 #endif
14169         default:
14170                 return mono_op_to_op_imm (opcode);
14171         }
14172 }
14173
14174 /**
14175  * mono_handle_global_vregs:
14176  *
14177  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14178  * for them.
14179  */
14180 void
14181 mono_handle_global_vregs (MonoCompile *cfg)
14182 {
14183         gint32 *vreg_to_bb;
14184         MonoBasicBlock *bb;
14185         int i, pos;
14186
14187         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14188
14189 #ifdef MONO_ARCH_SIMD_INTRINSICS
14190         if (cfg->uses_simd_intrinsics)
14191                 mono_simd_simplify_indirection (cfg);
14192 #endif
14193
14194         /* Find local vregs used in more than one bb */
14195         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14196                 MonoInst *ins = bb->code;
14197                 int block_num = bb->block_num;
14198
14199                 if (cfg->verbose_level > 2)
14200                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14201
14202                 cfg->cbb = bb;
14203                 for (; ins; ins = ins->next) {
14204                         const char *spec = INS_INFO (ins->opcode);
14205                         int regtype = 0, regindex;
14206                         gint32 prev_bb;
14207
14208                         if (G_UNLIKELY (cfg->verbose_level > 2))
14209                                 mono_print_ins (ins);
14210
14211                         g_assert (ins->opcode >= MONO_CEE_LAST);
14212
14213                         for (regindex = 0; regindex < 4; regindex ++) {
14214                                 int vreg = 0;
14215
14216                                 if (regindex == 0) {
14217                                         regtype = spec [MONO_INST_DEST];
14218                                         if (regtype == ' ')
14219                                                 continue;
14220                                         vreg = ins->dreg;
14221                                 } else if (regindex == 1) {
14222                                         regtype = spec [MONO_INST_SRC1];
14223                                         if (regtype == ' ')
14224                                                 continue;
14225                                         vreg = ins->sreg1;
14226                                 } else if (regindex == 2) {
14227                                         regtype = spec [MONO_INST_SRC2];
14228                                         if (regtype == ' ')
14229                                                 continue;
14230                                         vreg = ins->sreg2;
14231                                 } else if (regindex == 3) {
14232                                         regtype = spec [MONO_INST_SRC3];
14233                                         if (regtype == ' ')
14234                                                 continue;
14235                                         vreg = ins->sreg3;
14236                                 }
14237
14238 #if SIZEOF_REGISTER == 4
14239                                 /* In the LLVM case, the long opcodes are not decomposed */
14240                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14241                                         /*
14242                                          * Since some instructions reference the original long vreg,
14243                                          * and some reference the two component vregs, it is quite hard
14244                                          * to determine when it needs to be global. So be conservative.
14245                                          */
14246                                         if (!get_vreg_to_inst (cfg, vreg)) {
14247                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14248
14249                                                 if (cfg->verbose_level > 2)
14250                                                         printf ("LONG VREG R%d made global.\n", vreg);
14251                                         }
14252
14253                                         /*
14254                                          * Make the component vregs volatile since the optimizations can
14255                                          * get confused otherwise.
14256                                          */
14257                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14258                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14259                                 }
14260 #endif
14261
14262                                 g_assert (vreg != -1);
14263
14264                                 prev_bb = vreg_to_bb [vreg];
14265                                 if (prev_bb == 0) {
14266                                         /* 0 is a valid block num */
14267                                         vreg_to_bb [vreg] = block_num + 1;
14268                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14269                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14270                                                 continue;
14271
14272                                         if (!get_vreg_to_inst (cfg, vreg)) {
14273                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14274                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14275
14276                                                 switch (regtype) {
14277                                                 case 'i':
14278                                                         if (vreg_is_ref (cfg, vreg))
14279                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14280                                                         else
14281                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14282                                                         break;
14283                                                 case 'l':
14284                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14285                                                         break;
14286                                                 case 'f':
14287                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14288                                                         break;
14289                                                 case 'v':
14290                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14291                                                         break;
14292                                                 default:
14293                                                         g_assert_not_reached ();
14294                                                 }
14295                                         }
14296
14297                                         /* Flag as having been used in more than one bb */
14298                                         vreg_to_bb [vreg] = -1;
14299                                 }
14300                         }
14301                 }
14302         }
14303
14304         /* If a variable is used in only one bblock, convert it into a local vreg */
14305         for (i = 0; i < cfg->num_varinfo; i++) {
14306                 MonoInst *var = cfg->varinfo [i];
14307                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14308
14309                 switch (var->type) {
14310                 case STACK_I4:
14311                 case STACK_OBJ:
14312                 case STACK_PTR:
14313                 case STACK_MP:
14314                 case STACK_VTYPE:
14315 #if SIZEOF_REGISTER == 8
14316                 case STACK_I8:
14317 #endif
14318 #if !defined(TARGET_X86)
14319                 /* Enabling this screws up the fp stack on x86 */
14320                 case STACK_R8:
14321 #endif
14322                         if (mono_arch_is_soft_float ())
14323                                 break;
14324
14325                         /*
14326                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14327                                 break;
14328                         */
14329
14330                         /* Arguments are implicitly global */
14331                         /* Putting R4 vars into registers doesn't work currently */
14332                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14333                         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) {
14334                                 /*
14335                                  * Make that the variable's liveness interval doesn't contain a call, since
14336                                  * that would cause the lvreg to be spilled, making the whole optimization
14337                                  * useless.
14338                                  */
14339                                 /* This is too slow for JIT compilation */
14340 #if 0
14341                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14342                                         MonoInst *ins;
14343                                         int def_index, call_index, ins_index;
14344                                         gboolean spilled = FALSE;
14345
14346                                         def_index = -1;
14347                                         call_index = -1;
14348                                         ins_index = 0;
14349                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14350                                                 const char *spec = INS_INFO (ins->opcode);
14351
14352                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14353                                                         def_index = ins_index;
14354
14355                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14356                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14357                                                         if (call_index > def_index) {
14358                                                                 spilled = TRUE;
14359                                                                 break;
14360                                                         }
14361                                                 }
14362
14363                                                 if (MONO_IS_CALL (ins))
14364                                                         call_index = ins_index;
14365
14366                                                 ins_index ++;
14367                                         }
14368
14369                                         if (spilled)
14370                                                 break;
14371                                 }
14372 #endif
14373
14374                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14375                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14376                                 var->flags |= MONO_INST_IS_DEAD;
14377                                 cfg->vreg_to_inst [var->dreg] = NULL;
14378                         }
14379                         break;
14380                 }
14381         }
14382
14383         /*
14384          * Compress the varinfo and vars tables so the liveness computation is faster and
14385          * takes up less space.
14386          */
14387         pos = 0;
14388         for (i = 0; i < cfg->num_varinfo; ++i) {
14389                 MonoInst *var = cfg->varinfo [i];
14390                 if (pos < i && cfg->locals_start == i)
14391                         cfg->locals_start = pos;
14392                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14393                         if (pos < i) {
14394                                 cfg->varinfo [pos] = cfg->varinfo [i];
14395                                 cfg->varinfo [pos]->inst_c0 = pos;
14396                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14397                                 cfg->vars [pos].idx = pos;
14398 #if SIZEOF_REGISTER == 4
14399                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14400                                         /* Modify the two component vars too */
14401                                         MonoInst *var1;
14402
14403                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14404                                         var1->inst_c0 = pos;
14405                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14406                                         var1->inst_c0 = pos;
14407                                 }
14408 #endif
14409                         }
14410                         pos ++;
14411                 }
14412         }
14413         cfg->num_varinfo = pos;
14414         if (cfg->locals_start > cfg->num_varinfo)
14415                 cfg->locals_start = cfg->num_varinfo;
14416 }
14417
14418 /*
14419  * mono_allocate_gsharedvt_vars:
14420  *
14421  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14422  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14423  */
14424 void
14425 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14426 {
14427         int i;
14428
14429         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14430
14431         for (i = 0; i < cfg->num_varinfo; ++i) {
14432                 MonoInst *ins = cfg->varinfo [i];
14433                 int idx;
14434
14435                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14436                         if (i >= cfg->locals_start) {
14437                                 /* Local */
14438                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14439                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14440                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14441                                 ins->inst_imm = idx;
14442                         } else {
14443                                 /* Arg */
14444                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14445                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14446                         }
14447                 }
14448         }
14449 }
14450
14451 /**
14452  * mono_spill_global_vars:
14453  *
14454  *   Generate spill code for variables which are not allocated to registers,
14455  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14456  * code is generated which could be optimized by the local optimization passes.
14457  */
14458 void
14459 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14460 {
14461         MonoBasicBlock *bb;
14462         char spec2 [16];
14463         int orig_next_vreg;
14464         guint32 *vreg_to_lvreg;
14465         guint32 *lvregs;
14466         guint32 i, lvregs_len;
14467         gboolean dest_has_lvreg = FALSE;
14468         MonoStackType stacktypes [128];
14469         MonoInst **live_range_start, **live_range_end;
14470         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14471
14472         *need_local_opts = FALSE;
14473
14474         memset (spec2, 0, sizeof (spec2));
14475
14476         /* FIXME: Move this function to mini.c */
14477         stacktypes ['i'] = STACK_PTR;
14478         stacktypes ['l'] = STACK_I8;
14479         stacktypes ['f'] = STACK_R8;
14480 #ifdef MONO_ARCH_SIMD_INTRINSICS
14481         stacktypes ['x'] = STACK_VTYPE;
14482 #endif
14483
14484 #if SIZEOF_REGISTER == 4
14485         /* Create MonoInsts for longs */
14486         for (i = 0; i < cfg->num_varinfo; i++) {
14487                 MonoInst *ins = cfg->varinfo [i];
14488
14489                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14490                         switch (ins->type) {
14491                         case STACK_R8:
14492                         case STACK_I8: {
14493                                 MonoInst *tree;
14494
14495                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14496                                         break;
14497
14498                                 g_assert (ins->opcode == OP_REGOFFSET);
14499
14500                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14501                                 g_assert (tree);
14502                                 tree->opcode = OP_REGOFFSET;
14503                                 tree->inst_basereg = ins->inst_basereg;
14504                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14505
14506                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14507                                 g_assert (tree);
14508                                 tree->opcode = OP_REGOFFSET;
14509                                 tree->inst_basereg = ins->inst_basereg;
14510                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14511                                 break;
14512                         }
14513                         default:
14514                                 break;
14515                         }
14516                 }
14517         }
14518 #endif
14519
14520         if (cfg->compute_gc_maps) {
14521                 /* registers need liveness info even for !non refs */
14522                 for (i = 0; i < cfg->num_varinfo; i++) {
14523                         MonoInst *ins = cfg->varinfo [i];
14524
14525                         if (ins->opcode == OP_REGVAR)
14526                                 ins->flags |= MONO_INST_GC_TRACK;
14527                 }
14528         }
14529
14530         /* FIXME: widening and truncation */
14531
14532         /*
14533          * As an optimization, when a variable allocated to the stack is first loaded into
14534          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14535          * the variable again.
14536          */
14537         orig_next_vreg = cfg->next_vreg;
14538         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14539         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14540         lvregs_len = 0;
14541
14542         /*
14543          * These arrays contain the first and last instructions accessing a given
14544          * variable.
14545          * Since we emit bblocks in the same order we process them here, and we
14546          * don't split live ranges, these will precisely describe the live range of
14547          * the variable, i.e. the instruction range where a valid value can be found
14548          * in the variables location.
14549          * The live range is computed using the liveness info computed by the liveness pass.
14550          * We can't use vmv->range, since that is an abstract live range, and we need
14551          * one which is instruction precise.
14552          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14553          */
14554         /* FIXME: Only do this if debugging info is requested */
14555         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14556         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14557         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14558         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14559
14560         /* Add spill loads/stores */
14561         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14562                 MonoInst *ins;
14563
14564                 if (cfg->verbose_level > 2)
14565                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14566
14567                 /* Clear vreg_to_lvreg array */
14568                 for (i = 0; i < lvregs_len; i++)
14569                         vreg_to_lvreg [lvregs [i]] = 0;
14570                 lvregs_len = 0;
14571
14572                 cfg->cbb = bb;
14573                 MONO_BB_FOR_EACH_INS (bb, ins) {
14574                         const char *spec = INS_INFO (ins->opcode);
14575                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14576                         gboolean store, no_lvreg;
14577                         int sregs [MONO_MAX_SRC_REGS];
14578
14579                         if (G_UNLIKELY (cfg->verbose_level > 2))
14580                                 mono_print_ins (ins);
14581
14582                         if (ins->opcode == OP_NOP)
14583                                 continue;
14584
14585                         /*
14586                          * We handle LDADDR here as well, since it can only be decomposed
14587                          * when variable addresses are known.
14588                          */
14589                         if (ins->opcode == OP_LDADDR) {
14590                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14591
14592                                 if (var->opcode == OP_VTARG_ADDR) {
14593                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14594                                         MonoInst *vtaddr = var->inst_left;
14595                                         if (vtaddr->opcode == OP_REGVAR) {
14596                                                 ins->opcode = OP_MOVE;
14597                                                 ins->sreg1 = vtaddr->dreg;
14598                                         }
14599                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14600                                                 ins->opcode = OP_LOAD_MEMBASE;
14601                                                 ins->inst_basereg = vtaddr->inst_basereg;
14602                                                 ins->inst_offset = vtaddr->inst_offset;
14603                                         } else
14604                                                 NOT_IMPLEMENTED;
14605                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14606                                         /* gsharedvt arg passed by ref */
14607                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14608
14609                                         ins->opcode = OP_LOAD_MEMBASE;
14610                                         ins->inst_basereg = var->inst_basereg;
14611                                         ins->inst_offset = var->inst_offset;
14612                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14613                                         MonoInst *load, *load2, *load3;
14614                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14615                                         int reg1, reg2, reg3;
14616                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14617                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14618
14619                                         /*
14620                                          * gsharedvt local.
14621                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14622                                          */
14623
14624                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14625
14626                                         g_assert (info_var);
14627                                         g_assert (locals_var);
14628
14629                                         /* Mark the instruction used to compute the locals var as used */
14630                                         cfg->gsharedvt_locals_var_ins = NULL;
14631
14632                                         /* Load the offset */
14633                                         if (info_var->opcode == OP_REGOFFSET) {
14634                                                 reg1 = alloc_ireg (cfg);
14635                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14636                                         } else if (info_var->opcode == OP_REGVAR) {
14637                                                 load = NULL;
14638                                                 reg1 = info_var->dreg;
14639                                         } else {
14640                                                 g_assert_not_reached ();
14641                                         }
14642                                         reg2 = alloc_ireg (cfg);
14643                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14644                                         /* Load the locals area address */
14645                                         reg3 = alloc_ireg (cfg);
14646                                         if (locals_var->opcode == OP_REGOFFSET) {
14647                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14648                                         } else if (locals_var->opcode == OP_REGVAR) {
14649                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14650                                         } else {
14651                                                 g_assert_not_reached ();
14652                                         }
14653                                         /* Compute the address */
14654                                         ins->opcode = OP_PADD;
14655                                         ins->sreg1 = reg3;
14656                                         ins->sreg2 = reg2;
14657
14658                                         mono_bblock_insert_before_ins (bb, ins, load3);
14659                                         mono_bblock_insert_before_ins (bb, load3, load2);
14660                                         if (load)
14661                                                 mono_bblock_insert_before_ins (bb, load2, load);
14662                                 } else {
14663                                         g_assert (var->opcode == OP_REGOFFSET);
14664
14665                                         ins->opcode = OP_ADD_IMM;
14666                                         ins->sreg1 = var->inst_basereg;
14667                                         ins->inst_imm = var->inst_offset;
14668                                 }
14669
14670                                 *need_local_opts = TRUE;
14671                                 spec = INS_INFO (ins->opcode);
14672                         }
14673
14674                         if (ins->opcode < MONO_CEE_LAST) {
14675                                 mono_print_ins (ins);
14676                                 g_assert_not_reached ();
14677                         }
14678
14679                         /*
14680                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14681                          * src register.
14682                          * FIXME:
14683                          */
14684                         if (MONO_IS_STORE_MEMBASE (ins)) {
14685                                 tmp_reg = ins->dreg;
14686                                 ins->dreg = ins->sreg2;
14687                                 ins->sreg2 = tmp_reg;
14688                                 store = TRUE;
14689
14690                                 spec2 [MONO_INST_DEST] = ' ';
14691                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14692                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14693                                 spec2 [MONO_INST_SRC3] = ' ';
14694                                 spec = spec2;
14695                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14696                                 g_assert_not_reached ();
14697                         else
14698                                 store = FALSE;
14699                         no_lvreg = FALSE;
14700
14701                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14702                                 printf ("\t %.3s %d", spec, ins->dreg);
14703                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14704                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14705                                         printf (" %d", sregs [srcindex]);
14706                                 printf ("\n");
14707                         }
14708
14709                         /***************/
14710                         /*    DREG     */
14711                         /***************/
14712                         regtype = spec [MONO_INST_DEST];
14713                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14714                         prev_dreg = -1;
14715
14716                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14717                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14718                                 MonoInst *store_ins;
14719                                 int store_opcode;
14720                                 MonoInst *def_ins = ins;
14721                                 int dreg = ins->dreg; /* The original vreg */
14722
14723                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14724
14725                                 if (var->opcode == OP_REGVAR) {
14726                                         ins->dreg = var->dreg;
14727                                 } 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)) {
14728                                         /*
14729                                          * Instead of emitting a load+store, use a _membase opcode.
14730                                          */
14731                                         g_assert (var->opcode == OP_REGOFFSET);
14732                                         if (ins->opcode == OP_MOVE) {
14733                                                 NULLIFY_INS (ins);
14734                                                 def_ins = NULL;
14735                                         } else {
14736                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14737                                                 ins->inst_basereg = var->inst_basereg;
14738                                                 ins->inst_offset = var->inst_offset;
14739                                                 ins->dreg = -1;
14740                                         }
14741                                         spec = INS_INFO (ins->opcode);
14742                                 } else {
14743                                         guint32 lvreg;
14744
14745                                         g_assert (var->opcode == OP_REGOFFSET);
14746
14747                                         prev_dreg = ins->dreg;
14748
14749                                         /* Invalidate any previous lvreg for this vreg */
14750                                         vreg_to_lvreg [ins->dreg] = 0;
14751
14752                                         lvreg = 0;
14753
14754                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14755                                                 regtype = 'l';
14756                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14757                                         }
14758
14759                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14760
14761 #if SIZEOF_REGISTER != 8
14762                                         if (regtype == 'l') {
14763                                                 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));
14764                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14765                                                 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));
14766                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14767                                                 def_ins = store_ins;
14768                                         }
14769                                         else
14770 #endif
14771                                         {
14772                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14773
14774                                                 /* Try to fuse the store into the instruction itself */
14775                                                 /* FIXME: Add more instructions */
14776                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14777                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14778                                                         ins->inst_imm = ins->inst_c0;
14779                                                         ins->inst_destbasereg = var->inst_basereg;
14780                                                         ins->inst_offset = var->inst_offset;
14781                                                         spec = INS_INFO (ins->opcode);
14782                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14783                                                         ins->opcode = store_opcode;
14784                                                         ins->inst_destbasereg = var->inst_basereg;
14785                                                         ins->inst_offset = var->inst_offset;
14786
14787                                                         no_lvreg = TRUE;
14788
14789                                                         tmp_reg = ins->dreg;
14790                                                         ins->dreg = ins->sreg2;
14791                                                         ins->sreg2 = tmp_reg;
14792                                                         store = TRUE;
14793
14794                                                         spec2 [MONO_INST_DEST] = ' ';
14795                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14796                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14797                                                         spec2 [MONO_INST_SRC3] = ' ';
14798                                                         spec = spec2;
14799                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14800                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14801                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14802                                                         ins->dreg = -1;
14803                                                         ins->inst_basereg = var->inst_basereg;
14804                                                         ins->inst_offset = var->inst_offset;
14805                                                         spec = INS_INFO (ins->opcode);
14806                                                 } else {
14807                                                         /* printf ("INS: "); mono_print_ins (ins); */
14808                                                         /* Create a store instruction */
14809                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14810
14811                                                         /* Insert it after the instruction */
14812                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14813
14814                                                         def_ins = store_ins;
14815
14816                                                         /*
14817                                                          * We can't assign ins->dreg to var->dreg here, since the
14818                                                          * sregs could use it. So set a flag, and do it after
14819                                                          * the sregs.
14820                                                          */
14821                                                         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)))
14822                                                                 dest_has_lvreg = TRUE;
14823                                                 }
14824                                         }
14825                                 }
14826
14827                                 if (def_ins && !live_range_start [dreg]) {
14828                                         live_range_start [dreg] = def_ins;
14829                                         live_range_start_bb [dreg] = bb;
14830                                 }
14831
14832                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14833                                         MonoInst *tmp;
14834
14835                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14836                                         tmp->inst_c1 = dreg;
14837                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14838                                 }
14839                         }
14840
14841                         /************/
14842                         /*  SREGS   */
14843                         /************/
14844                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14845                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14846                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14847                                 sreg = sregs [srcindex];
14848
14849                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14850                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14851                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14852                                         MonoInst *use_ins = ins;
14853                                         MonoInst *load_ins;
14854                                         guint32 load_opcode;
14855
14856                                         if (var->opcode == OP_REGVAR) {
14857                                                 sregs [srcindex] = var->dreg;
14858                                                 //mono_inst_set_src_registers (ins, sregs);
14859                                                 live_range_end [sreg] = use_ins;
14860                                                 live_range_end_bb [sreg] = bb;
14861
14862                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14863                                                         MonoInst *tmp;
14864
14865                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14866                                                         /* var->dreg is a hreg */
14867                                                         tmp->inst_c1 = sreg;
14868                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14869                                                 }
14870
14871                                                 continue;
14872                                         }
14873
14874                                         g_assert (var->opcode == OP_REGOFFSET);
14875
14876                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14877
14878                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14879
14880                                         if (vreg_to_lvreg [sreg]) {
14881                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14882
14883                                                 /* The variable is already loaded to an lvreg */
14884                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14885                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14886                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14887                                                 //mono_inst_set_src_registers (ins, sregs);
14888                                                 continue;
14889                                         }
14890
14891                                         /* Try to fuse the load into the instruction */
14892                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14893                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14894                                                 sregs [0] = var->inst_basereg;
14895                                                 //mono_inst_set_src_registers (ins, sregs);
14896                                                 ins->inst_offset = var->inst_offset;
14897                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14898                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14899                                                 sregs [1] = var->inst_basereg;
14900                                                 //mono_inst_set_src_registers (ins, sregs);
14901                                                 ins->inst_offset = var->inst_offset;
14902                                         } else {
14903                                                 if (MONO_IS_REAL_MOVE (ins)) {
14904                                                         ins->opcode = OP_NOP;
14905                                                         sreg = ins->dreg;
14906                                                 } else {
14907                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14908
14909                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14910
14911                                                         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) {
14912                                                                 if (var->dreg == prev_dreg) {
14913                                                                         /*
14914                                                                          * sreg refers to the value loaded by the load
14915                                                                          * emitted below, but we need to use ins->dreg
14916                                                                          * since it refers to the store emitted earlier.
14917                                                                          */
14918                                                                         sreg = ins->dreg;
14919                                                                 }
14920                                                                 g_assert (sreg != -1);
14921                                                                 vreg_to_lvreg [var->dreg] = sreg;
14922                                                                 g_assert (lvregs_len < 1024);
14923                                                                 lvregs [lvregs_len ++] = var->dreg;
14924                                                         }
14925                                                 }
14926
14927                                                 sregs [srcindex] = sreg;
14928                                                 //mono_inst_set_src_registers (ins, sregs);
14929
14930 #if SIZEOF_REGISTER != 8
14931                                                 if (regtype == 'l') {
14932                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14933                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14934                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14935                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14936                                                         use_ins = load_ins;
14937                                                 }
14938                                                 else
14939 #endif
14940                                                 {
14941 #if SIZEOF_REGISTER == 4
14942                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14943 #endif
14944                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14945                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14946                                                         use_ins = load_ins;
14947                                                 }
14948                                         }
14949
14950                                         if (var->dreg < orig_next_vreg) {
14951                                                 live_range_end [var->dreg] = use_ins;
14952                                                 live_range_end_bb [var->dreg] = bb;
14953                                         }
14954
14955                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14956                                                 MonoInst *tmp;
14957
14958                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14959                                                 tmp->inst_c1 = var->dreg;
14960                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14961                                         }
14962                                 }
14963                         }
14964                         mono_inst_set_src_registers (ins, sregs);
14965
14966                         if (dest_has_lvreg) {
14967                                 g_assert (ins->dreg != -1);
14968                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14969                                 g_assert (lvregs_len < 1024);
14970                                 lvregs [lvregs_len ++] = prev_dreg;
14971                                 dest_has_lvreg = FALSE;
14972                         }
14973
14974                         if (store) {
14975                                 tmp_reg = ins->dreg;
14976                                 ins->dreg = ins->sreg2;
14977                                 ins->sreg2 = tmp_reg;
14978                         }
14979
14980                         if (MONO_IS_CALL (ins)) {
14981                                 /* Clear vreg_to_lvreg array */
14982                                 for (i = 0; i < lvregs_len; i++)
14983                                         vreg_to_lvreg [lvregs [i]] = 0;
14984                                 lvregs_len = 0;
14985                         } else if (ins->opcode == OP_NOP) {
14986                                 ins->dreg = -1;
14987                                 MONO_INST_NULLIFY_SREGS (ins);
14988                         }
14989
14990                         if (cfg->verbose_level > 2)
14991                                 mono_print_ins_index (1, ins);
14992                 }
14993
14994                 /* Extend the live range based on the liveness info */
14995                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14996                         for (i = 0; i < cfg->num_varinfo; i ++) {
14997                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14998
14999                                 if (vreg_is_volatile (cfg, vi->vreg))
15000                                         /* The liveness info is incomplete */
15001                                         continue;
15002
15003                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
15004                                         /* Live from at least the first ins of this bb */
15005                                         live_range_start [vi->vreg] = bb->code;
15006                                         live_range_start_bb [vi->vreg] = bb;
15007                                 }
15008
15009                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
15010                                         /* Live at least until the last ins of this bb */
15011                                         live_range_end [vi->vreg] = bb->last_ins;
15012                                         live_range_end_bb [vi->vreg] = bb;
15013                                 }
15014                         }
15015                 }
15016         }
15017
15018         /*
15019          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
15020          * by storing the current native offset into MonoMethodVar->live_range_start/end.
15021          */
15022         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15023                 for (i = 0; i < cfg->num_varinfo; ++i) {
15024                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15025                         MonoInst *ins;
15026
15027                         if (live_range_start [vreg]) {
15028                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15029                                 ins->inst_c0 = i;
15030                                 ins->inst_c1 = vreg;
15031                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15032                         }
15033                         if (live_range_end [vreg]) {
15034                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15035                                 ins->inst_c0 = i;
15036                                 ins->inst_c1 = vreg;
15037                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15038                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15039                                 else
15040                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15041                         }
15042                 }
15043         }
15044
15045         if (cfg->gsharedvt_locals_var_ins) {
15046                 /* Nullify if unused */
15047                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15048                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15049         }
15050
15051         g_free (live_range_start);
15052         g_free (live_range_end);
15053         g_free (live_range_start_bb);
15054         g_free (live_range_end_bb);
15055 }
15056
15057 static void
15058 mono_decompose_typecheck (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
15059 {
15060         MonoInst *ret, *move, *source;
15061         MonoClass *klass = ins->klass;
15062         int context_used = mini_class_check_context_used (cfg, klass);
15063         int is_isinst = ins->opcode == OP_ISINST;
15064         g_assert (is_isinst || ins->opcode == OP_CASTCLASS);
15065         source = get_vreg_to_inst (cfg, ins->sreg1);
15066         if (!source || source == (MonoInst *) -1)
15067                 source = mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, ins->sreg1);
15068         g_assert (source && source != (MonoInst *) -1);
15069
15070         MonoBasicBlock *first_bb;
15071         NEW_BBLOCK (cfg, first_bb);
15072         cfg->cbb = first_bb;
15073
15074         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
15075                 if (is_isinst)
15076                         ret = emit_isinst_with_cache_nonshared (cfg, source, klass);
15077                 else
15078                         ret = emit_castclass_with_cache_nonshared (cfg, source, klass);
15079         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
15080                 MonoInst *iargs [1];
15081                 int costs;
15082
15083                 iargs [0] = source;
15084                 if (is_isinst) {
15085                         MonoMethod *wrapper = mono_marshal_get_isinst (klass);
15086                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15087                 } else {
15088                         MonoMethod *wrapper = mono_marshal_get_castclass (klass);
15089                         save_cast_details (cfg, klass, source->dreg, TRUE);
15090                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15091                         reset_cast_details (cfg);
15092                 }
15093                 g_assert (costs > 0);
15094                 ret = iargs [0];
15095         } else {
15096                 if (is_isinst)
15097                         ret = handle_isinst (cfg, klass, source, context_used);
15098                 else
15099                         ret = handle_castclass (cfg, klass, source, context_used);
15100         }
15101         EMIT_NEW_UNALU (cfg, move, OP_MOVE, ins->dreg, ret->dreg);
15102
15103         g_assert (cfg->cbb->code || first_bb->code);
15104         MonoInst *prev = ins->prev;
15105         mono_replace_ins (cfg, bb, ins, &prev, first_bb, cfg->cbb);
15106 }
15107
15108 void
15109 mono_decompose_typechecks (MonoCompile *cfg)
15110 {
15111         for (MonoBasicBlock *bb = cfg->bb_entry; bb; bb = bb->next_bb) {
15112                 MonoInst *ins;
15113                 MONO_BB_FOR_EACH_INS (bb, ins) {
15114                         switch (ins->opcode) {
15115                         case OP_ISINST:
15116                         case OP_CASTCLASS:
15117                                 mono_decompose_typecheck (cfg, bb, ins);
15118                                 break;
15119                         }
15120                 }
15121         }
15122 }
15123
15124
15125 /**
15126  * FIXME:
15127  * - use 'iadd' instead of 'int_add'
15128  * - handling ovf opcodes: decompose in method_to_ir.
15129  * - unify iregs/fregs
15130  *   -> partly done, the missing parts are:
15131  *   - a more complete unification would involve unifying the hregs as well, so
15132  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15133  *     would no longer map to the machine hregs, so the code generators would need to
15134  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15135  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15136  *     fp/non-fp branches speeds it up by about 15%.
15137  * - use sext/zext opcodes instead of shifts
15138  * - add OP_ICALL
15139  * - get rid of TEMPLOADs if possible and use vregs instead
15140  * - clean up usage of OP_P/OP_ opcodes
15141  * - cleanup usage of DUMMY_USE
15142  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15143  *   stack
15144  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15145  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15146  * - make sure handle_stack_args () is called before the branch is emitted
15147  * - when the new IR is done, get rid of all unused stuff
15148  * - COMPARE/BEQ as separate instructions or unify them ?
15149  *   - keeping them separate allows specialized compare instructions like
15150  *     compare_imm, compare_membase
15151  *   - most back ends unify fp compare+branch, fp compare+ceq
15152  * - integrate mono_save_args into inline_method
15153  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15154  * - handle long shift opts on 32 bit platforms somehow: they require
15155  *   3 sregs (2 for arg1 and 1 for arg2)
15156  * - make byref a 'normal' type.
15157  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15158  *   variable if needed.
15159  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15160  *   like inline_method.
15161  * - remove inlining restrictions
15162  * - fix LNEG and enable cfold of INEG
15163  * - generalize x86 optimizations like ldelema as a peephole optimization
15164  * - add store_mem_imm for amd64
15165  * - optimize the loading of the interruption flag in the managed->native wrappers
15166  * - avoid special handling of OP_NOP in passes
15167  * - move code inserting instructions into one function/macro.
15168  * - try a coalescing phase after liveness analysis
15169  * - add float -> vreg conversion + local optimizations on !x86
15170  * - figure out how to handle decomposed branches during optimizations, ie.
15171  *   compare+branch, op_jump_table+op_br etc.
15172  * - promote RuntimeXHandles to vregs
15173  * - vtype cleanups:
15174  *   - add a NEW_VARLOADA_VREG macro
15175  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15176  *   accessing vtype fields.
15177  * - get rid of I8CONST on 64 bit platforms
15178  * - dealing with the increase in code size due to branches created during opcode
15179  *   decomposition:
15180  *   - use extended basic blocks
15181  *     - all parts of the JIT
15182  *     - handle_global_vregs () && local regalloc
15183  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15184  * - sources of increase in code size:
15185  *   - vtypes
15186  *   - long compares
15187  *   - isinst and castclass
15188  *   - lvregs not allocated to global registers even if used multiple times
15189  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15190  *   meaningful.
15191  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15192  * - add all micro optimizations from the old JIT
15193  * - put tree optimizations into the deadce pass
15194  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15195  *   specific function.
15196  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15197  *   fcompare + branchCC.
15198  * - create a helper function for allocating a stack slot, taking into account
15199  *   MONO_CFG_HAS_SPILLUP.
15200  * - merge r68207.
15201  * - merge the ia64 switch changes.
15202  * - optimize mono_regstate2_alloc_int/float.
15203  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15204  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15205  *   parts of the tree could be separated by other instructions, killing the tree
15206  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15207  *   instructions if the result of the load is used multiple times ?
15208  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15209  * - LAST MERGE: 108395.
15210  * - when returning vtypes in registers, generate IR and append it to the end of the
15211  *   last bb instead of doing it in the epilog.
15212  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15213  */
15214
15215 /*
15216
15217 NOTES
15218 -----
15219
15220 - When to decompose opcodes:
15221   - earlier: this makes some optimizations hard to implement, since the low level IR
15222   no longer contains the neccessary information. But it is easier to do.
15223   - later: harder to implement, enables more optimizations.
15224 - Branches inside bblocks:
15225   - created when decomposing complex opcodes.
15226     - branches to another bblock: harmless, but not tracked by the branch
15227       optimizations, so need to branch to a label at the start of the bblock.
15228     - branches to inside the same bblock: very problematic, trips up the local
15229       reg allocator. Can be fixed by spitting the current bblock, but that is a
15230       complex operation, since some local vregs can become global vregs etc.
15231 - Local/global vregs:
15232   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15233     local register allocator.
15234   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15235     structure, created by mono_create_var (). Assigned to hregs or the stack by
15236     the global register allocator.
15237 - When to do optimizations like alu->alu_imm:
15238   - earlier -> saves work later on since the IR will be smaller/simpler
15239   - later -> can work on more instructions
15240 - Handling of valuetypes:
15241   - When a vtype is pushed on the stack, a new temporary is created, an
15242     instruction computing its address (LDADDR) is emitted and pushed on
15243     the stack. Need to optimize cases when the vtype is used immediately as in
15244     argument passing, stloc etc.
15245 - Instead of the to_end stuff in the old JIT, simply call the function handling
15246   the values on the stack before emitting the last instruction of the bb.
15247 */
15248
15249 #endif /* DISABLE_JIT */