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         unsigned char* prev_cil_start;
7084         guint32 prev_cil_offset_to_bb_len;
7085         MonoMethod *prev_current_method;
7086         MonoGenericContext *prev_generic_context;
7087         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7088
7089         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7090
7091 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7092         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7093                 return 0;
7094 #endif
7095 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7096         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7097                 return 0;
7098 #endif
7099
7100         if (!fsig)
7101                 fsig = mono_method_signature (cmethod);
7102
7103         if (cfg->verbose_level > 2)
7104                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7105
7106         if (!cmethod->inline_info) {
7107                 cfg->stat_inlineable_methods++;
7108                 cmethod->inline_info = 1;
7109         }
7110
7111         /* allocate local variables */
7112         cheader = mono_method_get_header_checked (cmethod, &error);
7113         if (!cheader) {
7114                 if (inline_always) {
7115                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7116                         mono_error_move (&cfg->error, &error);
7117                 } else {
7118                         mono_error_cleanup (&error);
7119                 }
7120                 return 0;
7121         }
7122
7123         /*Must verify before creating locals as it can cause the JIT to assert.*/
7124         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7125                 mono_metadata_free_mh (cheader);
7126                 return 0;
7127         }
7128
7129         /* allocate space to store the return value */
7130         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7131                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7132         }
7133
7134         prev_locals = cfg->locals;
7135         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7136         for (i = 0; i < cheader->num_locals; ++i)
7137                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7138
7139         /* allocate start and end blocks */
7140         /* This is needed so if the inline is aborted, we can clean up */
7141         NEW_BBLOCK (cfg, sbblock);
7142         sbblock->real_offset = real_offset;
7143
7144         NEW_BBLOCK (cfg, ebblock);
7145         ebblock->block_num = cfg->num_bblocks++;
7146         ebblock->real_offset = real_offset;
7147
7148         prev_args = cfg->args;
7149         prev_arg_types = cfg->arg_types;
7150         prev_inlined_method = cfg->inlined_method;
7151         cfg->inlined_method = cmethod;
7152         cfg->ret_var_set = FALSE;
7153         cfg->inline_depth ++;
7154         prev_real_offset = cfg->real_offset;
7155         prev_cbb_hash = cfg->cbb_hash;
7156         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7157         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7158         prev_cil_start = cfg->cil_start;
7159         prev_cbb = cfg->cbb;
7160         prev_current_method = cfg->current_method;
7161         prev_generic_context = cfg->generic_context;
7162         prev_ret_var_set = cfg->ret_var_set;
7163         prev_disable_inline = cfg->disable_inline;
7164
7165         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7166                 virtual_ = TRUE;
7167
7168         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7169
7170         ret_var_set = cfg->ret_var_set;
7171
7172         cfg->inlined_method = prev_inlined_method;
7173         cfg->real_offset = prev_real_offset;
7174         cfg->cbb_hash = prev_cbb_hash;
7175         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7176         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7177         cfg->cil_start = prev_cil_start;
7178         cfg->locals = prev_locals;
7179         cfg->args = prev_args;
7180         cfg->arg_types = prev_arg_types;
7181         cfg->current_method = prev_current_method;
7182         cfg->generic_context = prev_generic_context;
7183         cfg->ret_var_set = prev_ret_var_set;
7184         cfg->disable_inline = prev_disable_inline;
7185         cfg->inline_depth --;
7186
7187         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7188                 if (cfg->verbose_level > 2)
7189                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7190
7191                 cfg->stat_inlined_methods++;
7192
7193                 /* always add some code to avoid block split failures */
7194                 MONO_INST_NEW (cfg, ins, OP_NOP);
7195                 MONO_ADD_INS (prev_cbb, ins);
7196
7197                 prev_cbb->next_bb = sbblock;
7198                 link_bblock (cfg, prev_cbb, sbblock);
7199
7200                 /*
7201                  * Get rid of the begin and end bblocks if possible to aid local
7202                  * optimizations.
7203                  */
7204                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7205
7206                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7207                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7208
7209                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7210                         MonoBasicBlock *prev = ebblock->in_bb [0];
7211
7212                         if (prev->next_bb == ebblock) {
7213                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7214                                 cfg->cbb = prev;
7215                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7216                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7217                                         cfg->cbb = prev_cbb;
7218                                 }
7219                         } else {
7220                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7221                                 cfg->cbb = ebblock;
7222                         }
7223                 } else {
7224                         /*
7225                          * Its possible that the rvar is set in some prev bblock, but not in others.
7226                          * (#1835).
7227                          */
7228                         if (rvar) {
7229                                 MonoBasicBlock *bb;
7230
7231                                 for (i = 0; i < ebblock->in_count; ++i) {
7232                                         bb = ebblock->in_bb [i];
7233
7234                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7235                                                 cfg->cbb = bb;
7236
7237                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7238                                         }
7239                                 }
7240                         }
7241
7242                         cfg->cbb = ebblock;
7243                 }
7244
7245                 if (rvar) {
7246                         /*
7247                          * If the inlined method contains only a throw, then the ret var is not
7248                          * set, so set it to a dummy value.
7249                          */
7250                         if (!ret_var_set)
7251                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7252
7253                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7254                         *sp++ = ins;
7255                 }
7256                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7257                 return costs + 1;
7258         } else {
7259                 if (cfg->verbose_level > 2)
7260                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7261                 cfg->exception_type = MONO_EXCEPTION_NONE;
7262
7263                 /* This gets rid of the newly added bblocks */
7264                 cfg->cbb = prev_cbb;
7265         }
7266         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7267         return 0;
7268 }
7269
7270 /*
7271  * Some of these comments may well be out-of-date.
7272  * Design decisions: we do a single pass over the IL code (and we do bblock
7273  * splitting/merging in the few cases when it's required: a back jump to an IL
7274  * address that was not already seen as bblock starting point).
7275  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7276  * Complex operations are decomposed in simpler ones right away. We need to let the
7277  * arch-specific code peek and poke inside this process somehow (except when the
7278  * optimizations can take advantage of the full semantic info of coarse opcodes).
7279  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7280  * MonoInst->opcode initially is the IL opcode or some simplification of that
7281  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7282  * opcode with value bigger than OP_LAST.
7283  * At this point the IR can be handed over to an interpreter, a dumb code generator
7284  * or to the optimizing code generator that will translate it to SSA form.
7285  *
7286  * Profiling directed optimizations.
7287  * We may compile by default with few or no optimizations and instrument the code
7288  * or the user may indicate what methods to optimize the most either in a config file
7289  * or through repeated runs where the compiler applies offline the optimizations to
7290  * each method and then decides if it was worth it.
7291  */
7292
7293 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7294 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7295 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7296 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7297 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7298 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7299 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7300 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7301
7302 /* offset from br.s -> br like opcodes */
7303 #define BIG_BRANCH_OFFSET 13
7304
7305 static gboolean
7306 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7307 {
7308         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7309
7310         return b == NULL || b == bb;
7311 }
7312
7313 static int
7314 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7315 {
7316         unsigned char *ip = start;
7317         unsigned char *target;
7318         int i;
7319         guint cli_addr;
7320         MonoBasicBlock *bblock;
7321         const MonoOpcode *opcode;
7322
7323         while (ip < end) {
7324                 cli_addr = ip - start;
7325                 i = mono_opcode_value ((const guint8 **)&ip, end);
7326                 if (i < 0)
7327                         UNVERIFIED;
7328                 opcode = &mono_opcodes [i];
7329                 switch (opcode->argument) {
7330                 case MonoInlineNone:
7331                         ip++;
7332                         break;
7333                 case MonoInlineString:
7334                 case MonoInlineType:
7335                 case MonoInlineField:
7336                 case MonoInlineMethod:
7337                 case MonoInlineTok:
7338                 case MonoInlineSig:
7339                 case MonoShortInlineR:
7340                 case MonoInlineI:
7341                         ip += 5;
7342                         break;
7343                 case MonoInlineVar:
7344                         ip += 3;
7345                         break;
7346                 case MonoShortInlineVar:
7347                 case MonoShortInlineI:
7348                         ip += 2;
7349                         break;
7350                 case MonoShortInlineBrTarget:
7351                         target = start + cli_addr + 2 + (signed char)ip [1];
7352                         GET_BBLOCK (cfg, bblock, target);
7353                         ip += 2;
7354                         if (ip < end)
7355                                 GET_BBLOCK (cfg, bblock, ip);
7356                         break;
7357                 case MonoInlineBrTarget:
7358                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7359                         GET_BBLOCK (cfg, bblock, target);
7360                         ip += 5;
7361                         if (ip < end)
7362                                 GET_BBLOCK (cfg, bblock, ip);
7363                         break;
7364                 case MonoInlineSwitch: {
7365                         guint32 n = read32 (ip + 1);
7366                         guint32 j;
7367                         ip += 5;
7368                         cli_addr += 5 + 4 * n;
7369                         target = start + cli_addr;
7370                         GET_BBLOCK (cfg, bblock, target);
7371
7372                         for (j = 0; j < n; ++j) {
7373                                 target = start + cli_addr + (gint32)read32 (ip);
7374                                 GET_BBLOCK (cfg, bblock, target);
7375                                 ip += 4;
7376                         }
7377                         break;
7378                 }
7379                 case MonoInlineR:
7380                 case MonoInlineI8:
7381                         ip += 9;
7382                         break;
7383                 default:
7384                         g_assert_not_reached ();
7385                 }
7386
7387                 if (i == CEE_THROW) {
7388                         unsigned char *bb_start = ip - 1;
7389
7390                         /* Find the start of the bblock containing the throw */
7391                         bblock = NULL;
7392                         while ((bb_start >= start) && !bblock) {
7393                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7394                                 bb_start --;
7395                         }
7396                         if (bblock)
7397                                 bblock->out_of_line = 1;
7398                 }
7399         }
7400         return 0;
7401 unverified:
7402 exception_exit:
7403         *pos = ip;
7404         return 1;
7405 }
7406
7407 static inline MonoMethod *
7408 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7409 {
7410         MonoMethod *method;
7411
7412         mono_error_init (error);
7413
7414         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7415                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7416                 if (context) {
7417                         method = mono_class_inflate_generic_method_checked (method, context, error);
7418                 }
7419         } else {
7420                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7421         }
7422
7423         return method;
7424 }
7425
7426 static inline MonoMethod *
7427 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7428 {
7429         MonoError error;
7430         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7431
7432         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7433                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7434                 method = NULL;
7435         }
7436
7437         if (!method && !cfg)
7438                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7439
7440         return method;
7441 }
7442
7443 static inline MonoClass*
7444 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7445 {
7446         MonoError error;
7447         MonoClass *klass;
7448
7449         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7450                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7451                 if (context) {
7452                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7453                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7454                 }
7455         } else {
7456                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7457                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7458         }
7459         if (klass)
7460                 mono_class_init (klass);
7461         return klass;
7462 }
7463
7464 static inline MonoMethodSignature*
7465 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7466 {
7467         MonoMethodSignature *fsig;
7468
7469         mono_error_init (error);
7470         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7471                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7472         } else {
7473                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7474                 return_val_if_nok (error, NULL);
7475         }
7476         if (context) {
7477                 fsig = mono_inflate_generic_signature(fsig, context, error);
7478         }
7479         return fsig;
7480 }
7481
7482 static MonoMethod*
7483 throw_exception (void)
7484 {
7485         static MonoMethod *method = NULL;
7486
7487         if (!method) {
7488                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7489                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7490         }
7491         g_assert (method);
7492         return method;
7493 }
7494
7495 static void
7496 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7497 {
7498         MonoMethod *thrower = throw_exception ();
7499         MonoInst *args [1];
7500
7501         EMIT_NEW_PCONST (cfg, args [0], ex);
7502         mono_emit_method_call (cfg, thrower, args, NULL);
7503 }
7504
7505 /*
7506  * Return the original method is a wrapper is specified. We can only access
7507  * the custom attributes from the original method.
7508  */
7509 static MonoMethod*
7510 get_original_method (MonoMethod *method)
7511 {
7512         if (method->wrapper_type == MONO_WRAPPER_NONE)
7513                 return method;
7514
7515         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7516         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7517                 return NULL;
7518
7519         /* in other cases we need to find the original method */
7520         return mono_marshal_method_from_wrapper (method);
7521 }
7522
7523 static void
7524 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7525 {
7526         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7527         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7528         if (ex)
7529                 emit_throw_exception (cfg, ex);
7530 }
7531
7532 static void
7533 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7534 {
7535         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7536         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7537         if (ex)
7538                 emit_throw_exception (cfg, ex);
7539 }
7540
7541 /*
7542  * Check that the IL instructions at ip are the array initialization
7543  * sequence and return the pointer to the data and the size.
7544  */
7545 static const char*
7546 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7547 {
7548         /*
7549          * newarr[System.Int32]
7550          * dup
7551          * ldtoken field valuetype ...
7552          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7553          */
7554         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7555                 MonoError error;
7556                 guint32 token = read32 (ip + 7);
7557                 guint32 field_token = read32 (ip + 2);
7558                 guint32 field_index = field_token & 0xffffff;
7559                 guint32 rva;
7560                 const char *data_ptr;
7561                 int size = 0;
7562                 MonoMethod *cmethod;
7563                 MonoClass *dummy_class;
7564                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7565                 int dummy_align;
7566
7567                 if (!field) {
7568                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7569                         return NULL;
7570                 }
7571
7572                 *out_field_token = field_token;
7573
7574                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7575                 if (!cmethod)
7576                         return NULL;
7577                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7578                         return NULL;
7579                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7580                 case MONO_TYPE_BOOLEAN:
7581                 case MONO_TYPE_I1:
7582                 case MONO_TYPE_U1:
7583                         size = 1; break;
7584                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7585 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7586                 case MONO_TYPE_CHAR:
7587                 case MONO_TYPE_I2:
7588                 case MONO_TYPE_U2:
7589                         size = 2; break;
7590                 case MONO_TYPE_I4:
7591                 case MONO_TYPE_U4:
7592                 case MONO_TYPE_R4:
7593                         size = 4; break;
7594                 case MONO_TYPE_R8:
7595                 case MONO_TYPE_I8:
7596                 case MONO_TYPE_U8:
7597                         size = 8; break;
7598 #endif
7599                 default:
7600                         return NULL;
7601                 }
7602                 size *= len;
7603                 if (size > mono_type_size (field->type, &dummy_align))
7604                     return NULL;
7605                 *out_size = size;
7606                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7607                 if (!image_is_dynamic (method->klass->image)) {
7608                         field_index = read32 (ip + 2) & 0xffffff;
7609                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7610                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7611                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7612                         /* for aot code we do the lookup on load */
7613                         if (aot && data_ptr)
7614                                 return (const char *)GUINT_TO_POINTER (rva);
7615                 } else {
7616                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7617                         g_assert (!aot);
7618                         data_ptr = mono_field_get_data (field);
7619                 }
7620                 return data_ptr;
7621         }
7622         return NULL;
7623 }
7624
7625 static void
7626 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7627 {
7628         MonoError error;
7629         char *method_fname = mono_method_full_name (method, TRUE);
7630         char *method_code;
7631         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7632
7633         if (!header) {
7634                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7635                 mono_error_cleanup (&error);
7636         } else if (header->code_size == 0)
7637                 method_code = g_strdup ("method body is empty.");
7638         else
7639                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7640         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7641         g_free (method_fname);
7642         g_free (method_code);
7643         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7644 }
7645
7646 static void
7647 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7648 {
7649         MonoInst *ins;
7650         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7651         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7652                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7653                 /* Optimize reg-reg moves away */
7654                 /*
7655                  * Can't optimize other opcodes, since sp[0] might point to
7656                  * the last ins of a decomposed opcode.
7657                  */
7658                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7659         } else {
7660                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7661         }
7662 }
7663
7664 /*
7665  * ldloca inhibits many optimizations so try to get rid of it in common
7666  * cases.
7667  */
7668 static inline unsigned char *
7669 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7670 {
7671         int local, token;
7672         MonoClass *klass;
7673         MonoType *type;
7674
7675         if (size == 1) {
7676                 local = ip [1];
7677                 ip += 2;
7678         } else {
7679                 local = read16 (ip + 2);
7680                 ip += 4;
7681         }
7682
7683         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7684                 /* From the INITOBJ case */
7685                 token = read32 (ip + 2);
7686                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7687                 CHECK_TYPELOAD (klass);
7688                 type = mini_get_underlying_type (&klass->byval_arg);
7689                 emit_init_local (cfg, local, type, TRUE);
7690                 return ip + 6;
7691         }
7692  exception_exit:
7693         return NULL;
7694 }
7695
7696 static MonoInst*
7697 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7698 {
7699         MonoInst *icall_args [16];
7700         MonoInst *call_target, *ins, *vtable_ins;
7701         int arg_reg, this_reg, vtable_reg;
7702         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7703         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7704         gboolean variant_iface = FALSE;
7705         guint32 slot;
7706         int offset;
7707
7708         /*
7709          * In llvm-only mode, vtables contain function descriptors instead of
7710          * method addresses/trampolines.
7711          */
7712         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7713
7714         if (is_iface)
7715                 slot = mono_method_get_imt_slot (cmethod);
7716         else
7717                 slot = mono_method_get_vtable_index (cmethod);
7718
7719         this_reg = sp [0]->dreg;
7720
7721         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7722                 variant_iface = TRUE;
7723
7724         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7725                 /*
7726                  * The simplest case, a normal virtual call.
7727                  */
7728                 int slot_reg = alloc_preg (cfg);
7729                 int addr_reg = alloc_preg (cfg);
7730                 int arg_reg = alloc_preg (cfg);
7731                 MonoBasicBlock *non_null_bb;
7732
7733                 vtable_reg = alloc_preg (cfg);
7734                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7735                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7736
7737                 /* Load the vtable slot, which contains a function descriptor. */
7738                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7739
7740                 NEW_BBLOCK (cfg, non_null_bb);
7741
7742                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7743                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7744                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7745
7746                 /* Slow path */
7747                 // FIXME: Make the wrapper use the preserveall cconv
7748                 // FIXME: Use one icall per slot for small slot numbers ?
7749                 icall_args [0] = vtable_ins;
7750                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7751                 /* Make the icall return the vtable slot value to save some code space */
7752                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7753                 ins->dreg = slot_reg;
7754                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7755
7756                 /* Fastpath */
7757                 MONO_START_BB (cfg, non_null_bb);
7758                 /* Load the address + arg from the vtable slot */
7759                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7760                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7761
7762                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7763         }
7764
7765         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7766                 /*
7767                  * A simple interface call
7768                  *
7769                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7770                  * The imt slot contains a function descriptor for a runtime function + arg.
7771                  */
7772                 int slot_reg = alloc_preg (cfg);
7773                 int addr_reg = alloc_preg (cfg);
7774                 int arg_reg = alloc_preg (cfg);
7775                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7776
7777                 vtable_reg = alloc_preg (cfg);
7778                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7779                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7780
7781                 /*
7782                  * The slot is already initialized when the vtable is created so there is no need
7783                  * to check it here.
7784                  */
7785
7786                 /* Load the imt slot, which contains a function descriptor. */
7787                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7788
7789                 /* Load the address + arg of the imt thunk from the imt slot */
7790                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7791                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7792                 /*
7793                  * IMT thunks in llvm-only mode are C functions which take an info argument
7794                  * plus the imt method and return the ftndesc to call.
7795                  */
7796                 icall_args [0] = thunk_arg_ins;
7797                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7798                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7799                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7800
7801                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7802         }
7803
7804         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7805                 /*
7806                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7807                  * dynamically extended as more instantiations are discovered.
7808                  * This handles generic virtual methods both on classes and interfaces.
7809                  */
7810                 int slot_reg = alloc_preg (cfg);
7811                 int addr_reg = alloc_preg (cfg);
7812                 int arg_reg = alloc_preg (cfg);
7813                 int ftndesc_reg = alloc_preg (cfg);
7814                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7815                 MonoBasicBlock *slowpath_bb, *end_bb;
7816
7817                 NEW_BBLOCK (cfg, slowpath_bb);
7818                 NEW_BBLOCK (cfg, end_bb);
7819
7820                 vtable_reg = alloc_preg (cfg);
7821                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7822                 if (is_iface)
7823                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7824                 else
7825                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7826
7827                 /* Load the slot, which contains a function descriptor. */
7828                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7829
7830                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7831                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7832                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7833                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7834
7835                 /* Fastpath */
7836                 /* Same as with iface calls */
7837                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7838                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7839                 icall_args [0] = thunk_arg_ins;
7840                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7841                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7842                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7843                 ftndesc_ins->dreg = ftndesc_reg;
7844                 /*
7845                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7846                  * they don't know about yet. Fall back to the slowpath in that case.
7847                  */
7848                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7849                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7850
7851                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7852
7853                 /* Slowpath */
7854                 MONO_START_BB (cfg, slowpath_bb);
7855                 icall_args [0] = vtable_ins;
7856                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7857                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7858                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7859                 if (is_iface)
7860                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7861                 else
7862                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7863                 ftndesc_ins->dreg = ftndesc_reg;
7864                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7865
7866                 /* Common case */
7867                 MONO_START_BB (cfg, end_bb);
7868                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7869         }
7870
7871         /*
7872          * Non-optimized cases
7873          */
7874         icall_args [0] = sp [0];
7875         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7876
7877         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7878                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7879
7880         arg_reg = alloc_preg (cfg);
7881         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7882         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7883
7884         g_assert (is_gsharedvt);
7885         if (is_iface)
7886                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7887         else
7888                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7889
7890         /*
7891          * Pass the extra argument even if the callee doesn't receive it, most
7892          * calling conventions allow this.
7893          */
7894         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7895 }
7896
7897 static gboolean
7898 is_exception_class (MonoClass *klass)
7899 {
7900         while (klass) {
7901                 if (klass == mono_defaults.exception_class)
7902                         return TRUE;
7903                 klass = klass->parent;
7904         }
7905         return FALSE;
7906 }
7907
7908 /*
7909  * is_jit_optimizer_disabled:
7910  *
7911  *   Determine whenever M's assembly has a DebuggableAttribute with the
7912  * IsJITOptimizerDisabled flag set.
7913  */
7914 static gboolean
7915 is_jit_optimizer_disabled (MonoMethod *m)
7916 {
7917         MonoError error;
7918         MonoAssembly *ass = m->klass->image->assembly;
7919         MonoCustomAttrInfo* attrs;
7920         MonoClass *klass;
7921         int i;
7922         gboolean val = FALSE;
7923
7924         g_assert (ass);
7925         if (ass->jit_optimizer_disabled_inited)
7926                 return ass->jit_optimizer_disabled;
7927
7928         klass = mono_class_try_get_debuggable_attribute_class ();
7929
7930         if (!klass) {
7931                 /* Linked away */
7932                 ass->jit_optimizer_disabled = FALSE;
7933                 mono_memory_barrier ();
7934                 ass->jit_optimizer_disabled_inited = TRUE;
7935                 return FALSE;
7936         }
7937
7938         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7939         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7940         if (attrs) {
7941                 for (i = 0; i < attrs->num_attrs; ++i) {
7942                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7943                         const gchar *p;
7944                         MonoMethodSignature *sig;
7945
7946                         if (!attr->ctor || attr->ctor->klass != klass)
7947                                 continue;
7948                         /* Decode the attribute. See reflection.c */
7949                         p = (const char*)attr->data;
7950                         g_assert (read16 (p) == 0x0001);
7951                         p += 2;
7952
7953                         // FIXME: Support named parameters
7954                         sig = mono_method_signature (attr->ctor);
7955                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7956                                 continue;
7957                         /* Two boolean arguments */
7958                         p ++;
7959                         val = *p;
7960                 }
7961                 mono_custom_attrs_free (attrs);
7962         }
7963
7964         ass->jit_optimizer_disabled = val;
7965         mono_memory_barrier ();
7966         ass->jit_optimizer_disabled_inited = TRUE;
7967
7968         return val;
7969 }
7970
7971 static gboolean
7972 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7973 {
7974         gboolean supported_tail_call;
7975         int i;
7976
7977         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7978
7979         for (i = 0; i < fsig->param_count; ++i) {
7980                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7981                         /* These can point to the current method's stack */
7982                         supported_tail_call = FALSE;
7983         }
7984         if (fsig->hasthis && cmethod->klass->valuetype)
7985                 /* this might point to the current method's stack */
7986                 supported_tail_call = FALSE;
7987         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7988                 supported_tail_call = FALSE;
7989         if (cfg->method->save_lmf)
7990                 supported_tail_call = FALSE;
7991         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7992                 supported_tail_call = FALSE;
7993         if (call_opcode != CEE_CALL)
7994                 supported_tail_call = FALSE;
7995
7996         /* Debugging support */
7997 #if 0
7998         if (supported_tail_call) {
7999                 if (!mono_debug_count ())
8000                         supported_tail_call = FALSE;
8001         }
8002 #endif
8003
8004         return supported_tail_call;
8005 }
8006
8007 /*
8008  * handle_ctor_call:
8009  *
8010  *   Handle calls made to ctors from NEWOBJ opcodes.
8011  */
8012 static void
8013 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8014                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8015 {
8016         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8017
8018         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8019                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8020                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8021                         mono_class_vtable (cfg->domain, cmethod->klass);
8022                         CHECK_TYPELOAD (cmethod->klass);
8023
8024                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8025                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8026                 } else {
8027                         if (context_used) {
8028                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8029                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8030                         } else {
8031                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8032
8033                                 CHECK_TYPELOAD (cmethod->klass);
8034                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8035                         }
8036                 }
8037         }
8038
8039         /* Avoid virtual calls to ctors if possible */
8040         if (mono_class_is_marshalbyref (cmethod->klass))
8041                 callvirt_this_arg = sp [0];
8042
8043         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8044                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8045                 CHECK_CFG_EXCEPTION;
8046         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8047                            mono_method_check_inlining (cfg, cmethod) &&
8048                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8049                 int costs;
8050
8051                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8052                         cfg->real_offset += 5;
8053
8054                         *inline_costs += costs - 5;
8055                 } else {
8056                         INLINE_FAILURE ("inline failure");
8057                         // FIXME-VT: Clean this up
8058                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8059                                 GSHAREDVT_FAILURE(*ip);
8060                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8061                 }
8062         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8063                 MonoInst *addr;
8064
8065                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8066
8067                 if (cfg->llvm_only) {
8068                         // FIXME: Avoid initializing vtable_arg
8069                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8070                 } else {
8071                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8072                 }
8073         } else if (context_used &&
8074                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8075                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8076                 MonoInst *cmethod_addr;
8077
8078                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8079
8080                 if (cfg->llvm_only) {
8081                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8082                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8083                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8084                 } else {
8085                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8086                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8087
8088                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8089                 }
8090         } else {
8091                 INLINE_FAILURE ("ctor call");
8092                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8093                                                                                   callvirt_this_arg, NULL, vtable_arg);
8094         }
8095  exception_exit:
8096         return;
8097 }
8098
8099 static void
8100 emit_setret (MonoCompile *cfg, MonoInst *val)
8101 {
8102         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8103         MonoInst *ins;
8104
8105         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8106                 MonoInst *ret_addr;
8107
8108                 if (!cfg->vret_addr) {
8109                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8110                 } else {
8111                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8112
8113                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8114                         ins->klass = mono_class_from_mono_type (ret_type);
8115                 }
8116         } else {
8117 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8118                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8119                         MonoInst *iargs [1];
8120                         MonoInst *conv;
8121
8122                         iargs [0] = val;
8123                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8124                         mono_arch_emit_setret (cfg, cfg->method, conv);
8125                 } else {
8126                         mono_arch_emit_setret (cfg, cfg->method, val);
8127                 }
8128 #else
8129                 mono_arch_emit_setret (cfg, cfg->method, val);
8130 #endif
8131         }
8132 }
8133
8134 /*
8135  * mono_method_to_ir:
8136  *
8137  *   Translate the .net IL into linear IR.
8138  */
8139 int
8140 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8141                    MonoInst *return_var, MonoInst **inline_args,
8142                    guint inline_offset, gboolean is_virtual_call)
8143 {
8144         MonoError error;
8145         MonoInst *ins, **sp, **stack_start;
8146         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8147         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8148         MonoMethod *cmethod, *method_definition;
8149         MonoInst **arg_array;
8150         MonoMethodHeader *header;
8151         MonoImage *image;
8152         guint32 token, ins_flag;
8153         MonoClass *klass;
8154         MonoClass *constrained_class = NULL;
8155         unsigned char *ip, *end, *target, *err_pos;
8156         MonoMethodSignature *sig;
8157         MonoGenericContext *generic_context = NULL;
8158         MonoGenericContainer *generic_container = NULL;
8159         MonoType **param_types;
8160         int i, n, start_new_bblock, dreg;
8161         int num_calls = 0, inline_costs = 0;
8162         int breakpoint_id = 0;
8163         guint num_args;
8164         GSList *class_inits = NULL;
8165         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8166         int context_used;
8167         gboolean init_locals, seq_points, skip_dead_blocks;
8168         gboolean sym_seq_points = FALSE;
8169         MonoDebugMethodInfo *minfo;
8170         MonoBitSet *seq_point_locs = NULL;
8171         MonoBitSet *seq_point_set_locs = NULL;
8172
8173         cfg->disable_inline = is_jit_optimizer_disabled (method);
8174
8175         /* serialization and xdomain stuff may need access to private fields and methods */
8176         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8177         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8178         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8179         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8182
8183         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8184         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8185         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8186         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8187         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8188
8189         image = method->klass->image;
8190         header = mono_method_get_header_checked (method, &cfg->error);
8191         if (!header) {
8192                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8193                 goto exception_exit;
8194         } else {
8195                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
8196         }
8197
8198         generic_container = mono_method_get_generic_container (method);
8199         sig = mono_method_signature (method);
8200         num_args = sig->hasthis + sig->param_count;
8201         ip = (unsigned char*)header->code;
8202         cfg->cil_start = ip;
8203         end = ip + header->code_size;
8204         cfg->stat_cil_code_size += header->code_size;
8205
8206         seq_points = cfg->gen_seq_points && cfg->method == method;
8207
8208         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8209                 /* We could hit a seq point before attaching to the JIT (#8338) */
8210                 seq_points = FALSE;
8211         }
8212
8213         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8214                 minfo = mono_debug_lookup_method (method);
8215                 if (minfo) {
8216                         MonoSymSeqPoint *sps;
8217                         int i, n_il_offsets;
8218
8219                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8220                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8221                         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);
8222                         sym_seq_points = TRUE;
8223                         for (i = 0; i < n_il_offsets; ++i) {
8224                                 if (sps [i].il_offset < header->code_size)
8225                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8226                         }
8227                         g_free (sps);
8228                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8229                         /* Methods without line number info like auto-generated property accessors */
8230                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8231                         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);
8232                         sym_seq_points = TRUE;
8233                 }
8234         }
8235
8236         /*
8237          * Methods without init_locals set could cause asserts in various passes
8238          * (#497220). To work around this, we emit dummy initialization opcodes
8239          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8240          * on some platforms.
8241          */
8242         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8243                 init_locals = header->init_locals;
8244         else
8245                 init_locals = TRUE;
8246
8247         method_definition = method;
8248         while (method_definition->is_inflated) {
8249                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8250                 method_definition = imethod->declaring;
8251         }
8252
8253         /* SkipVerification is not allowed if core-clr is enabled */
8254         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8255                 dont_verify = TRUE;
8256                 dont_verify_stloc = TRUE;
8257         }
8258
8259         if (sig->is_inflated)
8260                 generic_context = mono_method_get_context (method);
8261         else if (generic_container)
8262                 generic_context = &generic_container->context;
8263         cfg->generic_context = generic_context;
8264
8265         if (!cfg->gshared)
8266                 g_assert (!sig->has_type_parameters);
8267
8268         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8269                 g_assert (method->is_inflated);
8270                 g_assert (mono_method_get_context (method)->method_inst);
8271         }
8272         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8273                 g_assert (sig->generic_param_count);
8274
8275         if (cfg->method == method) {
8276                 cfg->real_offset = 0;
8277         } else {
8278                 cfg->real_offset = inline_offset;
8279         }
8280
8281         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8282         cfg->cil_offset_to_bb_len = header->code_size;
8283
8284         cfg->current_method = method;
8285
8286         if (cfg->verbose_level > 2)
8287                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8288
8289         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8290         if (sig->hasthis)
8291                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8292         for (n = 0; n < sig->param_count; ++n)
8293                 param_types [n + sig->hasthis] = sig->params [n];
8294         cfg->arg_types = param_types;
8295
8296         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8297         if (cfg->method == method) {
8298
8299                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8300                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8301
8302                 /* ENTRY BLOCK */
8303                 NEW_BBLOCK (cfg, start_bblock);
8304                 cfg->bb_entry = start_bblock;
8305                 start_bblock->cil_code = NULL;
8306                 start_bblock->cil_length = 0;
8307
8308                 /* EXIT BLOCK */
8309                 NEW_BBLOCK (cfg, end_bblock);
8310                 cfg->bb_exit = end_bblock;
8311                 end_bblock->cil_code = NULL;
8312                 end_bblock->cil_length = 0;
8313                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8314                 g_assert (cfg->num_bblocks == 2);
8315
8316                 arg_array = cfg->args;
8317
8318                 if (header->num_clauses) {
8319                         cfg->spvars = g_hash_table_new (NULL, NULL);
8320                         cfg->exvars = g_hash_table_new (NULL, NULL);
8321                 }
8322                 /* handle exception clauses */
8323                 for (i = 0; i < header->num_clauses; ++i) {
8324                         MonoBasicBlock *try_bb;
8325                         MonoExceptionClause *clause = &header->clauses [i];
8326                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8327
8328                         try_bb->real_offset = clause->try_offset;
8329                         try_bb->try_start = TRUE;
8330                         try_bb->region = ((i + 1) << 8) | clause->flags;
8331                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8332                         tblock->real_offset = clause->handler_offset;
8333                         tblock->flags |= BB_EXCEPTION_HANDLER;
8334
8335                         /*
8336                          * Linking the try block with the EH block hinders inlining as we won't be able to
8337                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8338                          */
8339                         if (COMPILE_LLVM (cfg))
8340                                 link_bblock (cfg, try_bb, tblock);
8341
8342                         if (*(ip + clause->handler_offset) == CEE_POP)
8343                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8344
8345                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8346                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8347                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8348                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8349                                 MONO_ADD_INS (tblock, ins);
8350
8351                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8352                                         /* finally clauses already have a seq point */
8353                                         /* seq points for filter clauses are emitted below */
8354                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8355                                         MONO_ADD_INS (tblock, ins);
8356                                 }
8357
8358                                 /* todo: is a fault block unsafe to optimize? */
8359                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8360                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8361                         }
8362
8363                         /*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);
8364                           while (p < end) {
8365                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8366                           }*/
8367                         /* catch and filter blocks get the exception object on the stack */
8368                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8369                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8370
8371                                 /* mostly like handle_stack_args (), but just sets the input args */
8372                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8373                                 tblock->in_scount = 1;
8374                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8375                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8376
8377                                 cfg->cbb = tblock;
8378
8379 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8380                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8381                                 if (!cfg->compile_llvm) {
8382                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8383                                         ins->dreg = tblock->in_stack [0]->dreg;
8384                                         MONO_ADD_INS (tblock, ins);
8385                                 }
8386 #else
8387                                 MonoInst *dummy_use;
8388
8389                                 /*
8390                                  * Add a dummy use for the exvar so its liveness info will be
8391                                  * correct.
8392                                  */
8393                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8394 #endif
8395
8396                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8397                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8398                                         MONO_ADD_INS (tblock, ins);
8399                                 }
8400
8401                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8402                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8403                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8404                                         tblock->real_offset = clause->data.filter_offset;
8405                                         tblock->in_scount = 1;
8406                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8407                                         /* The filter block shares the exvar with the handler block */
8408                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8409                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8410                                         MONO_ADD_INS (tblock, ins);
8411                                 }
8412                         }
8413
8414                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8415                                         clause->data.catch_class &&
8416                                         cfg->gshared &&
8417                                         mono_class_check_context_used (clause->data.catch_class)) {
8418                                 /*
8419                                  * In shared generic code with catch
8420                                  * clauses containing type variables
8421                                  * the exception handling code has to
8422                                  * be able to get to the rgctx.
8423                                  * Therefore we have to make sure that
8424                                  * the vtable/mrgctx argument (for
8425                                  * static or generic methods) or the
8426                                  * "this" argument (for non-static
8427                                  * methods) are live.
8428                                  */
8429                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8430                                                 mini_method_get_context (method)->method_inst ||
8431                                                 method->klass->valuetype) {
8432                                         mono_get_vtable_var (cfg);
8433                                 } else {
8434                                         MonoInst *dummy_use;
8435
8436                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8437                                 }
8438                         }
8439                 }
8440         } else {
8441                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8442                 cfg->cbb = start_bblock;
8443                 cfg->args = arg_array;
8444                 mono_save_args (cfg, sig, inline_args);
8445         }
8446
8447         /* FIRST CODE BLOCK */
8448         NEW_BBLOCK (cfg, tblock);
8449         tblock->cil_code = ip;
8450         cfg->cbb = tblock;
8451         cfg->ip = ip;
8452
8453         ADD_BBLOCK (cfg, tblock);
8454
8455         if (cfg->method == method) {
8456                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8457                 if (breakpoint_id) {
8458                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8459                         MONO_ADD_INS (cfg->cbb, ins);
8460                 }
8461         }
8462
8463         /* we use a separate basic block for the initialization code */
8464         NEW_BBLOCK (cfg, init_localsbb);
8465         cfg->bb_init = init_localsbb;
8466         init_localsbb->real_offset = cfg->real_offset;
8467         start_bblock->next_bb = init_localsbb;
8468         init_localsbb->next_bb = cfg->cbb;
8469         link_bblock (cfg, start_bblock, init_localsbb);
8470         link_bblock (cfg, init_localsbb, cfg->cbb);
8471
8472         cfg->cbb = init_localsbb;
8473
8474         if (cfg->gsharedvt && cfg->method == method) {
8475                 MonoGSharedVtMethodInfo *info;
8476                 MonoInst *var, *locals_var;
8477                 int dreg;
8478
8479                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8480                 info->method = cfg->method;
8481                 info->count_entries = 16;
8482                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8483                 cfg->gsharedvt_info = info;
8484
8485                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8486                 /* prevent it from being register allocated */
8487                 //var->flags |= MONO_INST_VOLATILE;
8488                 cfg->gsharedvt_info_var = var;
8489
8490                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8491                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8492
8493                 /* Allocate locals */
8494                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8495                 /* prevent it from being register allocated */
8496                 //locals_var->flags |= MONO_INST_VOLATILE;
8497                 cfg->gsharedvt_locals_var = locals_var;
8498
8499                 dreg = alloc_ireg (cfg);
8500                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8501
8502                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8503                 ins->dreg = locals_var->dreg;
8504                 ins->sreg1 = dreg;
8505                 MONO_ADD_INS (cfg->cbb, ins);
8506                 cfg->gsharedvt_locals_var_ins = ins;
8507
8508                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8509                 /*
8510                 if (init_locals)
8511                         ins->flags |= MONO_INST_INIT;
8512                 */
8513         }
8514
8515         if (mono_security_core_clr_enabled ()) {
8516                 /* check if this is native code, e.g. an icall or a p/invoke */
8517                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8518                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8519                         if (wrapped) {
8520                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8521                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8522
8523                                 /* if this ia a native call then it can only be JITted from platform code */
8524                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8525                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8526                                                 MonoException *ex = icall ? mono_get_exception_security () :
8527                                                         mono_get_exception_method_access ();
8528                                                 emit_throw_exception (cfg, ex);
8529                                         }
8530                                 }
8531                         }
8532                 }
8533         }
8534
8535         CHECK_CFG_EXCEPTION;
8536
8537         if (header->code_size == 0)
8538                 UNVERIFIED;
8539
8540         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8541                 ip = err_pos;
8542                 UNVERIFIED;
8543         }
8544
8545         if (cfg->method == method)
8546                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8547
8548         for (n = 0; n < header->num_locals; ++n) {
8549                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8550                         UNVERIFIED;
8551         }
8552         class_inits = NULL;
8553
8554         /* We force the vtable variable here for all shared methods
8555            for the possibility that they might show up in a stack
8556            trace where their exact instantiation is needed. */
8557         if (cfg->gshared && method == cfg->method) {
8558                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8559                                 mini_method_get_context (method)->method_inst ||
8560                                 method->klass->valuetype) {
8561                         mono_get_vtable_var (cfg);
8562                 } else {
8563                         /* FIXME: Is there a better way to do this?
8564                            We need the variable live for the duration
8565                            of the whole method. */
8566                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8567                 }
8568         }
8569
8570         /* add a check for this != NULL to inlined methods */
8571         if (is_virtual_call) {
8572                 MonoInst *arg_ins;
8573
8574                 NEW_ARGLOAD (cfg, arg_ins, 0);
8575                 MONO_ADD_INS (cfg->cbb, arg_ins);
8576                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8577         }
8578
8579         skip_dead_blocks = !dont_verify;
8580         if (skip_dead_blocks) {
8581                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8582                 CHECK_CFG_ERROR;
8583                 g_assert (bb);
8584         }
8585
8586         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8587         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8588
8589         ins_flag = 0;
8590         start_new_bblock = 0;
8591         while (ip < end) {
8592                 if (cfg->method == method)
8593                         cfg->real_offset = ip - header->code;
8594                 else
8595                         cfg->real_offset = inline_offset;
8596                 cfg->ip = ip;
8597
8598                 context_used = 0;
8599
8600                 if (start_new_bblock) {
8601                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8602                         if (start_new_bblock == 2) {
8603                                 g_assert (ip == tblock->cil_code);
8604                         } else {
8605                                 GET_BBLOCK (cfg, tblock, ip);
8606                         }
8607                         cfg->cbb->next_bb = tblock;
8608                         cfg->cbb = tblock;
8609                         start_new_bblock = 0;
8610                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8611                                 if (cfg->verbose_level > 3)
8612                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8613                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8614                                 *sp++ = ins;
8615                         }
8616                         if (class_inits)
8617                                 g_slist_free (class_inits);
8618                         class_inits = NULL;
8619                 } else {
8620                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8621                                 link_bblock (cfg, cfg->cbb, tblock);
8622                                 if (sp != stack_start) {
8623                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8624                                         sp = stack_start;
8625                                         CHECK_UNVERIFIABLE (cfg);
8626                                 }
8627                                 cfg->cbb->next_bb = tblock;
8628                                 cfg->cbb = tblock;
8629                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8630                                         if (cfg->verbose_level > 3)
8631                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8632                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8633                                         *sp++ = ins;
8634                                 }
8635                                 g_slist_free (class_inits);
8636                                 class_inits = NULL;
8637                         }
8638                 }
8639
8640                 if (skip_dead_blocks) {
8641                         int ip_offset = ip - header->code;
8642
8643                         if (ip_offset == bb->end)
8644                                 bb = bb->next;
8645
8646                         if (bb->dead) {
8647                                 int op_size = mono_opcode_size (ip, end);
8648                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8649
8650                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8651
8652                                 if (ip_offset + op_size == bb->end) {
8653                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8654                                         MONO_ADD_INS (cfg->cbb, ins);
8655                                         start_new_bblock = 1;
8656                                 }
8657
8658                                 ip += op_size;
8659                                 continue;
8660                         }
8661                 }
8662                 /*
8663                  * Sequence points are points where the debugger can place a breakpoint.
8664                  * Currently, we generate these automatically at points where the IL
8665                  * stack is empty.
8666                  */
8667                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8668                         /*
8669                          * Make methods interruptable at the beginning, and at the targets of
8670                          * backward branches.
8671                          * Also, do this at the start of every bblock in methods with clauses too,
8672                          * to be able to handle instructions with inprecise control flow like
8673                          * throw/endfinally.
8674                          * Backward branches are handled at the end of method-to-ir ().
8675                          */
8676                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8677                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8678
8679                         /* Avoid sequence points on empty IL like .volatile */
8680                         // FIXME: Enable this
8681                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8682                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8683                         if ((sp != stack_start) && !sym_seq_point)
8684                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8685                         MONO_ADD_INS (cfg->cbb, ins);
8686
8687                         if (sym_seq_points)
8688                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8689                 }
8690
8691                 cfg->cbb->real_offset = cfg->real_offset;
8692
8693                 if ((cfg->method == method) && cfg->coverage_info) {
8694                         guint32 cil_offset = ip - header->code;
8695                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8696
8697                         /* TODO: Use an increment here */
8698 #if defined(TARGET_X86)
8699                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8700                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8701                         ins->inst_imm = 1;
8702                         MONO_ADD_INS (cfg->cbb, ins);
8703 #else
8704                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8705                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8706 #endif
8707                 }
8708
8709                 if (cfg->verbose_level > 3)
8710                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8711
8712                 switch (*ip) {
8713                 case CEE_NOP:
8714                         if (seq_points && !sym_seq_points && sp != stack_start) {
8715                                 /*
8716                                  * The C# compiler uses these nops to notify the JIT that it should
8717                                  * insert seq points.
8718                                  */
8719                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8720                                 MONO_ADD_INS (cfg->cbb, ins);
8721                         }
8722                         if (cfg->keep_cil_nops)
8723                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8724                         else
8725                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8726                         ip++;
8727                         MONO_ADD_INS (cfg->cbb, ins);
8728                         break;
8729                 case CEE_BREAK:
8730                         if (should_insert_brekpoint (cfg->method)) {
8731                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8732                         } else {
8733                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8734                         }
8735                         ip++;
8736                         MONO_ADD_INS (cfg->cbb, ins);
8737                         break;
8738                 case CEE_LDARG_0:
8739                 case CEE_LDARG_1:
8740                 case CEE_LDARG_2:
8741                 case CEE_LDARG_3:
8742                         CHECK_STACK_OVF (1);
8743                         n = (*ip)-CEE_LDARG_0;
8744                         CHECK_ARG (n);
8745                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8746                         ip++;
8747                         *sp++ = ins;
8748                         break;
8749                 case CEE_LDLOC_0:
8750                 case CEE_LDLOC_1:
8751                 case CEE_LDLOC_2:
8752                 case CEE_LDLOC_3:
8753                         CHECK_STACK_OVF (1);
8754                         n = (*ip)-CEE_LDLOC_0;
8755                         CHECK_LOCAL (n);
8756                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8757                         ip++;
8758                         *sp++ = ins;
8759                         break;
8760                 case CEE_STLOC_0:
8761                 case CEE_STLOC_1:
8762                 case CEE_STLOC_2:
8763                 case CEE_STLOC_3: {
8764                         CHECK_STACK (1);
8765                         n = (*ip)-CEE_STLOC_0;
8766                         CHECK_LOCAL (n);
8767                         --sp;
8768                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8769                                 UNVERIFIED;
8770                         emit_stloc_ir (cfg, sp, header, n);
8771                         ++ip;
8772                         inline_costs += 1;
8773                         break;
8774                         }
8775                 case CEE_LDARG_S:
8776                         CHECK_OPSIZE (2);
8777                         CHECK_STACK_OVF (1);
8778                         n = ip [1];
8779                         CHECK_ARG (n);
8780                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8781                         *sp++ = ins;
8782                         ip += 2;
8783                         break;
8784                 case CEE_LDARGA_S:
8785                         CHECK_OPSIZE (2);
8786                         CHECK_STACK_OVF (1);
8787                         n = ip [1];
8788                         CHECK_ARG (n);
8789                         NEW_ARGLOADA (cfg, ins, n);
8790                         MONO_ADD_INS (cfg->cbb, ins);
8791                         *sp++ = ins;
8792                         ip += 2;
8793                         break;
8794                 case CEE_STARG_S:
8795                         CHECK_OPSIZE (2);
8796                         CHECK_STACK (1);
8797                         --sp;
8798                         n = ip [1];
8799                         CHECK_ARG (n);
8800                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8801                                 UNVERIFIED;
8802                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8803                         ip += 2;
8804                         break;
8805                 case CEE_LDLOC_S:
8806                         CHECK_OPSIZE (2);
8807                         CHECK_STACK_OVF (1);
8808                         n = ip [1];
8809                         CHECK_LOCAL (n);
8810                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8811                         *sp++ = ins;
8812                         ip += 2;
8813                         break;
8814                 case CEE_LDLOCA_S: {
8815                         unsigned char *tmp_ip;
8816                         CHECK_OPSIZE (2);
8817                         CHECK_STACK_OVF (1);
8818                         CHECK_LOCAL (ip [1]);
8819
8820                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8821                                 ip = tmp_ip;
8822                                 inline_costs += 1;
8823                                 break;
8824                         }
8825
8826                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8827                         *sp++ = ins;
8828                         ip += 2;
8829                         break;
8830                 }
8831                 case CEE_STLOC_S:
8832                         CHECK_OPSIZE (2);
8833                         CHECK_STACK (1);
8834                         --sp;
8835                         CHECK_LOCAL (ip [1]);
8836                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8837                                 UNVERIFIED;
8838                         emit_stloc_ir (cfg, sp, header, ip [1]);
8839                         ip += 2;
8840                         inline_costs += 1;
8841                         break;
8842                 case CEE_LDNULL:
8843                         CHECK_STACK_OVF (1);
8844                         EMIT_NEW_PCONST (cfg, ins, NULL);
8845                         ins->type = STACK_OBJ;
8846                         ++ip;
8847                         *sp++ = ins;
8848                         break;
8849                 case CEE_LDC_I4_M1:
8850                         CHECK_STACK_OVF (1);
8851                         EMIT_NEW_ICONST (cfg, ins, -1);
8852                         ++ip;
8853                         *sp++ = ins;
8854                         break;
8855                 case CEE_LDC_I4_0:
8856                 case CEE_LDC_I4_1:
8857                 case CEE_LDC_I4_2:
8858                 case CEE_LDC_I4_3:
8859                 case CEE_LDC_I4_4:
8860                 case CEE_LDC_I4_5:
8861                 case CEE_LDC_I4_6:
8862                 case CEE_LDC_I4_7:
8863                 case CEE_LDC_I4_8:
8864                         CHECK_STACK_OVF (1);
8865                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8866                         ++ip;
8867                         *sp++ = ins;
8868                         break;
8869                 case CEE_LDC_I4_S:
8870                         CHECK_OPSIZE (2);
8871                         CHECK_STACK_OVF (1);
8872                         ++ip;
8873                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8874                         ++ip;
8875                         *sp++ = ins;
8876                         break;
8877                 case CEE_LDC_I4:
8878                         CHECK_OPSIZE (5);
8879                         CHECK_STACK_OVF (1);
8880                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8881                         ip += 5;
8882                         *sp++ = ins;
8883                         break;
8884                 case CEE_LDC_I8:
8885                         CHECK_OPSIZE (9);
8886                         CHECK_STACK_OVF (1);
8887                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8888                         ins->type = STACK_I8;
8889                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8890                         ++ip;
8891                         ins->inst_l = (gint64)read64 (ip);
8892                         MONO_ADD_INS (cfg->cbb, ins);
8893                         ip += 8;
8894                         *sp++ = ins;
8895                         break;
8896                 case CEE_LDC_R4: {
8897                         float *f;
8898                         gboolean use_aotconst = FALSE;
8899
8900 #ifdef TARGET_POWERPC
8901                         /* FIXME: Clean this up */
8902                         if (cfg->compile_aot)
8903                                 use_aotconst = TRUE;
8904 #endif
8905
8906                         /* FIXME: we should really allocate this only late in the compilation process */
8907                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8908                         CHECK_OPSIZE (5);
8909                         CHECK_STACK_OVF (1);
8910
8911                         if (use_aotconst) {
8912                                 MonoInst *cons;
8913                                 int dreg;
8914
8915                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8916
8917                                 dreg = alloc_freg (cfg);
8918                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8919                                 ins->type = cfg->r4_stack_type;
8920                         } else {
8921                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8922                                 ins->type = cfg->r4_stack_type;
8923                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8924                                 ins->inst_p0 = f;
8925                                 MONO_ADD_INS (cfg->cbb, ins);
8926                         }
8927                         ++ip;
8928                         readr4 (ip, f);
8929                         ip += 4;
8930                         *sp++ = ins;
8931                         break;
8932                 }
8933                 case CEE_LDC_R8: {
8934                         double *d;
8935                         gboolean use_aotconst = FALSE;
8936
8937 #ifdef TARGET_POWERPC
8938                         /* FIXME: Clean this up */
8939                         if (cfg->compile_aot)
8940                                 use_aotconst = TRUE;
8941 #endif
8942
8943                         /* FIXME: we should really allocate this only late in the compilation process */
8944                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8945                         CHECK_OPSIZE (9);
8946                         CHECK_STACK_OVF (1);
8947
8948                         if (use_aotconst) {
8949                                 MonoInst *cons;
8950                                 int dreg;
8951
8952                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8953
8954                                 dreg = alloc_freg (cfg);
8955                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8956                                 ins->type = STACK_R8;
8957                         } else {
8958                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8959                                 ins->type = STACK_R8;
8960                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8961                                 ins->inst_p0 = d;
8962                                 MONO_ADD_INS (cfg->cbb, ins);
8963                         }
8964                         ++ip;
8965                         readr8 (ip, d);
8966                         ip += 8;
8967                         *sp++ = ins;
8968                         break;
8969                 }
8970                 case CEE_DUP: {
8971                         MonoInst *temp, *store;
8972                         CHECK_STACK (1);
8973                         CHECK_STACK_OVF (1);
8974                         sp--;
8975                         ins = *sp;
8976
8977                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8978                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8979
8980                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8981                         *sp++ = ins;
8982
8983                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8984                         *sp++ = ins;
8985
8986                         ++ip;
8987                         inline_costs += 2;
8988                         break;
8989                 }
8990                 case CEE_POP:
8991                         CHECK_STACK (1);
8992                         ip++;
8993                         --sp;
8994
8995 #ifdef TARGET_X86
8996                         if (sp [0]->type == STACK_R8)
8997                                 /* we need to pop the value from the x86 FP stack */
8998                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8999 #endif
9000                         break;
9001                 case CEE_JMP: {
9002                         MonoCallInst *call;
9003                         MonoMethodSignature *fsig;
9004                         int i, n;
9005
9006                         INLINE_FAILURE ("jmp");
9007                         GSHAREDVT_FAILURE (*ip);
9008
9009                         CHECK_OPSIZE (5);
9010                         if (stack_start != sp)
9011                                 UNVERIFIED;
9012                         token = read32 (ip + 1);
9013                         /* FIXME: check the signature matches */
9014                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9015                         CHECK_CFG_ERROR;
9016
9017                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9018                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9019
9020                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9021
9022                         fsig = mono_method_signature (cmethod);
9023                         n = fsig->param_count + fsig->hasthis;
9024                         if (cfg->llvm_only) {
9025                                 MonoInst **args;
9026
9027                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9028                                 for (i = 0; i < n; ++i)
9029                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9030                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9031                                 /*
9032                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9033                                  * have to emit a normal return since llvm expects it.
9034                                  */
9035                                 if (cfg->ret)
9036                                         emit_setret (cfg, ins);
9037                                 MONO_INST_NEW (cfg, ins, OP_BR);
9038                                 ins->inst_target_bb = end_bblock;
9039                                 MONO_ADD_INS (cfg->cbb, ins);
9040                                 link_bblock (cfg, cfg->cbb, end_bblock);
9041                                 ip += 5;
9042                                 break;
9043                         } else if (cfg->backend->have_op_tail_call) {
9044                                 /* Handle tail calls similarly to calls */
9045                                 DISABLE_AOT (cfg);
9046
9047                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9048                                 call->method = cmethod;
9049                                 call->tail_call = TRUE;
9050                                 call->signature = mono_method_signature (cmethod);
9051                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9052                                 call->inst.inst_p0 = cmethod;
9053                                 for (i = 0; i < n; ++i)
9054                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9055
9056                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
9057                                         call->vret_var = cfg->vret_addr;
9058
9059                                 mono_arch_emit_call (cfg, call);
9060                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9061                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9062                         } else {
9063                                 for (i = 0; i < num_args; ++i)
9064                                         /* Prevent arguments from being optimized away */
9065                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9066
9067                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9068                                 ins = (MonoInst*)call;
9069                                 ins->inst_p0 = cmethod;
9070                                 MONO_ADD_INS (cfg->cbb, ins);
9071                         }
9072
9073                         ip += 5;
9074                         start_new_bblock = 1;
9075                         break;
9076                 }
9077                 case CEE_CALLI: {
9078                         MonoInst *addr;
9079                         MonoMethodSignature *fsig;
9080
9081                         CHECK_OPSIZE (5);
9082                         token = read32 (ip + 1);
9083
9084                         ins = NULL;
9085
9086                         //GSHAREDVT_FAILURE (*ip);
9087                         cmethod = NULL;
9088                         CHECK_STACK (1);
9089                         --sp;
9090                         addr = *sp;
9091                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9092                         CHECK_CFG_ERROR;
9093
9094                         if (method->dynamic && fsig->pinvoke) {
9095                                 MonoInst *args [3];
9096
9097                                 /*
9098                                  * This is a call through a function pointer using a pinvoke
9099                                  * signature. Have to create a wrapper and call that instead.
9100                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9101                                  * instead based on the signature.
9102                                  */
9103                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9104                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9105                                 args [2] = addr;
9106                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9107                         }
9108
9109                         n = fsig->param_count + fsig->hasthis;
9110
9111                         CHECK_STACK (n);
9112
9113                         //g_assert (!virtual_ || fsig->hasthis);
9114
9115                         sp -= n;
9116
9117                         inline_costs += 10 * num_calls++;
9118
9119                         /*
9120                          * Making generic calls out of gsharedvt methods.
9121                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9122                          * patching gshared method addresses into a gsharedvt method.
9123                          */
9124                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9125                                 /*
9126                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9127                                  */
9128                                 MonoInst *callee = addr;
9129
9130                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9131                                         /* Not tested */
9132                                         GSHAREDVT_FAILURE (*ip);
9133
9134                                 if (cfg->llvm_only)
9135                                         // FIXME:
9136                                         GSHAREDVT_FAILURE (*ip);
9137
9138                                 addr = emit_get_rgctx_sig (cfg, context_used,
9139                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9140                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9141                                 goto calli_end;
9142                         }
9143
9144                         /* Prevent inlining of methods with indirect calls */
9145                         INLINE_FAILURE ("indirect call");
9146
9147                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9148                                 MonoJumpInfoType info_type;
9149                                 gpointer info_data;
9150
9151                                 /*
9152                                  * Instead of emitting an indirect call, emit a direct call
9153                                  * with the contents of the aotconst as the patch info.
9154                                  */
9155                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9156                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9157                                         info_data = addr->inst_p0;
9158                                 } else {
9159                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9160                                         info_data = addr->inst_right->inst_left;
9161                                 }
9162
9163                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9164                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9165                                         NULLIFY_INS (addr);
9166                                         goto calli_end;
9167                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9168                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9169                                         NULLIFY_INS (addr);
9170                                         goto calli_end;
9171                                 }
9172                         }
9173                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9174
9175                         calli_end:
9176
9177                         /* End of call, INS should contain the result of the call, if any */
9178
9179                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9180                                 g_assert (ins);
9181                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9182                         }
9183
9184                         CHECK_CFG_EXCEPTION;
9185
9186                         ip += 5;
9187                         ins_flag = 0;
9188                         constrained_class = NULL;
9189                         break;
9190                 }
9191                 case CEE_CALL:
9192                 case CEE_CALLVIRT: {
9193                         MonoInst *addr = NULL;
9194                         MonoMethodSignature *fsig = NULL;
9195                         int array_rank = 0;
9196                         int virtual_ = *ip == CEE_CALLVIRT;
9197                         gboolean pass_imt_from_rgctx = FALSE;
9198                         MonoInst *imt_arg = NULL;
9199                         MonoInst *keep_this_alive = NULL;
9200                         gboolean pass_vtable = FALSE;
9201                         gboolean pass_mrgctx = FALSE;
9202                         MonoInst *vtable_arg = NULL;
9203                         gboolean check_this = FALSE;
9204                         gboolean supported_tail_call = FALSE;
9205                         gboolean tail_call = FALSE;
9206                         gboolean need_seq_point = FALSE;
9207                         guint32 call_opcode = *ip;
9208                         gboolean emit_widen = TRUE;
9209                         gboolean push_res = TRUE;
9210                         gboolean skip_ret = FALSE;
9211                         gboolean delegate_invoke = FALSE;
9212                         gboolean direct_icall = FALSE;
9213                         gboolean constrained_partial_call = FALSE;
9214                         MonoMethod *cil_method;
9215
9216                         CHECK_OPSIZE (5);
9217                         token = read32 (ip + 1);
9218
9219                         ins = NULL;
9220
9221                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9222                         CHECK_CFG_ERROR;
9223
9224                         cil_method = cmethod;
9225
9226                         if (constrained_class) {
9227                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9228                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9229                                                 g_assert (!cmethod->klass->valuetype);
9230                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9231                                                         constrained_partial_call = TRUE;
9232                                         }
9233                                 }
9234
9235                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9236                                         if (cfg->verbose_level > 2)
9237                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9238                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9239                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9240                                                   cfg->gshared)) {
9241                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9242                                                 CHECK_CFG_ERROR;
9243                                         }
9244                                 } else {
9245                                         if (cfg->verbose_level > 2)
9246                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9247
9248                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9249                                                 /*
9250                                                  * This is needed since get_method_constrained can't find
9251                                                  * the method in klass representing a type var.
9252                                                  * The type var is guaranteed to be a reference type in this
9253                                                  * case.
9254                                                  */
9255                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9256                                                         g_assert (!cmethod->klass->valuetype);
9257                                         } else {
9258                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9259                                                 CHECK_CFG_ERROR;
9260                                         }
9261                                 }
9262                         }
9263
9264                         if (!dont_verify && !cfg->skip_visibility) {
9265                                 MonoMethod *target_method = cil_method;
9266                                 if (method->is_inflated) {
9267                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9268                                         CHECK_CFG_ERROR;
9269                                 }
9270                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9271                                         !mono_method_can_access_method (method, cil_method))
9272                                         emit_method_access_failure (cfg, method, cil_method);
9273                         }
9274
9275                         if (mono_security_core_clr_enabled ())
9276                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9277
9278                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9279                                 /* MS.NET seems to silently convert this to a callvirt */
9280                                 virtual_ = 1;
9281
9282                         {
9283                                 /*
9284                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9285                                  * converts to a callvirt.
9286                                  *
9287                                  * tests/bug-515884.il is an example of this behavior
9288                                  */
9289                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9290                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9291                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9292                                         virtual_ = 1;
9293                         }
9294
9295                         if (!cmethod->klass->inited)
9296                                 if (!mono_class_init (cmethod->klass))
9297                                         TYPE_LOAD_ERROR (cmethod->klass);
9298
9299                         fsig = mono_method_signature (cmethod);
9300                         if (!fsig)
9301                                 LOAD_ERROR;
9302                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9303                                 mini_class_is_system_array (cmethod->klass)) {
9304                                 array_rank = cmethod->klass->rank;
9305                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9306                                 direct_icall = TRUE;
9307                         } else if (fsig->pinvoke) {
9308                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9309                                 fsig = mono_method_signature (wrapper);
9310                         } else if (constrained_class) {
9311                         } else {
9312                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9313                                 CHECK_CFG_ERROR;
9314                         }
9315
9316                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9317                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9318
9319                         /* See code below */
9320                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9321                                 MonoBasicBlock *tbb;
9322
9323                                 GET_BBLOCK (cfg, tbb, ip + 5);
9324                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9325                                         /*
9326                                          * We want to extend the try block to cover the call, but we can't do it if the
9327                                          * call is made directly since its followed by an exception check.
9328                                          */
9329                                         direct_icall = FALSE;
9330                                 }
9331                         }
9332
9333                         mono_save_token_info (cfg, image, token, cil_method);
9334
9335                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9336                                 need_seq_point = TRUE;
9337
9338                         /* Don't support calls made using type arguments for now */
9339                         /*
9340                           if (cfg->gsharedvt) {
9341                           if (mini_is_gsharedvt_signature (fsig))
9342                           GSHAREDVT_FAILURE (*ip);
9343                           }
9344                         */
9345
9346                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9347                                 g_assert_not_reached ();
9348
9349                         n = fsig->param_count + fsig->hasthis;
9350
9351                         if (!cfg->gshared && cmethod->klass->generic_container)
9352                                 UNVERIFIED;
9353
9354                         if (!cfg->gshared)
9355                                 g_assert (!mono_method_check_context_used (cmethod));
9356
9357                         CHECK_STACK (n);
9358
9359                         //g_assert (!virtual_ || fsig->hasthis);
9360
9361                         sp -= n;
9362
9363                         /*
9364                          * We have the `constrained.' prefix opcode.
9365                          */
9366                         if (constrained_class) {
9367                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9368                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9369                                                 /* The 'Own method' case below */
9370                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9371                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9372                                         } else {
9373                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9374                                                 CHECK_CFG_EXCEPTION;
9375                                                 g_assert (ins);
9376                                                 goto call_end;
9377                                         }
9378                                 }
9379
9380                                 if (constrained_partial_call) {
9381                                         gboolean need_box = TRUE;
9382
9383                                         /*
9384                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9385                                          * called method is not known at compile time either. The called method could end up being
9386                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9387                                          * to box the receiver.
9388                                          * A simple solution would be to box always and make a normal virtual call, but that would
9389                                          * be bad performance wise.
9390                                          */
9391                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9392                                                 /*
9393                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9394                                                  */
9395                                                 need_box = FALSE;
9396                                         }
9397
9398                                         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)) {
9399                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9400                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9401                                                 ins->klass = constrained_class;
9402                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9403                                                 CHECK_CFG_EXCEPTION;
9404                                         } else if (need_box) {
9405                                                 MonoInst *box_type;
9406                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9407                                                 MonoInst *nonbox_call;
9408
9409                                                 /*
9410                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9411                                                  * if needed.
9412                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9413                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9414                                                  */
9415                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9416
9417                                                 NEW_BBLOCK (cfg, is_ref_bb);
9418                                                 NEW_BBLOCK (cfg, end_bb);
9419
9420                                                 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);
9421                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9422                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9423
9424                                                 /* Non-ref case */
9425                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9426
9427                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9428
9429                                                 /* Ref case */
9430                                                 MONO_START_BB (cfg, is_ref_bb);
9431                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9432                                                 ins->klass = constrained_class;
9433                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9434                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9435
9436                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9437
9438                                                 MONO_START_BB (cfg, end_bb);
9439                                                 cfg->cbb = end_bb;
9440
9441                                                 nonbox_call->dreg = ins->dreg;
9442                                                 goto call_end;
9443                                         } else {
9444                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9445                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9446                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9447                                                 goto call_end;
9448                                         }
9449                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9450                                         /*
9451                                          * The type parameter is instantiated as a valuetype,
9452                                          * but that type doesn't override the method we're
9453                                          * calling, so we need to box `this'.
9454                                          */
9455                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9456                                         ins->klass = constrained_class;
9457                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9458                                         CHECK_CFG_EXCEPTION;
9459                                 } else if (!constrained_class->valuetype) {
9460                                         int dreg = alloc_ireg_ref (cfg);
9461
9462                                         /*
9463                                          * The type parameter is instantiated as a reference
9464                                          * type.  We have a managed pointer on the stack, so
9465                                          * we need to dereference it here.
9466                                          */
9467                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9468                                         ins->type = STACK_OBJ;
9469                                         sp [0] = ins;
9470                                 } else {
9471                                         if (cmethod->klass->valuetype) {
9472                                                 /* Own method */
9473                                         } else {
9474                                                 /* Interface method */
9475                                                 int ioffset, slot;
9476
9477                                                 mono_class_setup_vtable (constrained_class);
9478                                                 CHECK_TYPELOAD (constrained_class);
9479                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9480                                                 if (ioffset == -1)
9481                                                         TYPE_LOAD_ERROR (constrained_class);
9482                                                 slot = mono_method_get_vtable_slot (cmethod);
9483                                                 if (slot == -1)
9484                                                         TYPE_LOAD_ERROR (cmethod->klass);
9485                                                 cmethod = constrained_class->vtable [ioffset + slot];
9486
9487                                                 if (cmethod->klass == mono_defaults.enum_class) {
9488                                                         /* Enum implements some interfaces, so treat this as the first case */
9489                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9490                                                         ins->klass = constrained_class;
9491                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9492                                                         CHECK_CFG_EXCEPTION;
9493                                                 }
9494                                         }
9495                                         virtual_ = 0;
9496                                 }
9497                                 constrained_class = NULL;
9498                         }
9499
9500                         if (check_call_signature (cfg, fsig, sp))
9501                                 UNVERIFIED;
9502
9503                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9504                                 delegate_invoke = TRUE;
9505
9506                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9507                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9508                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9509                                         emit_widen = FALSE;
9510                                 }
9511
9512                                 goto call_end;
9513                         }
9514
9515                         /*
9516                          * If the callee is a shared method, then its static cctor
9517                          * might not get called after the call was patched.
9518                          */
9519                         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)) {
9520                                 emit_class_init (cfg, cmethod->klass);
9521                                 CHECK_TYPELOAD (cmethod->klass);
9522                         }
9523
9524                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9525
9526                         if (cfg->gshared) {
9527                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9528
9529                                 context_used = mini_method_check_context_used (cfg, cmethod);
9530
9531                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9532                                         /* Generic method interface
9533                                            calls are resolved via a
9534                                            helper function and don't
9535                                            need an imt. */
9536                                         if (!cmethod_context || !cmethod_context->method_inst)
9537                                                 pass_imt_from_rgctx = TRUE;
9538                                 }
9539
9540                                 /*
9541                                  * If a shared method calls another
9542                                  * shared method then the caller must
9543                                  * have a generic sharing context
9544                                  * because the magic trampoline
9545                                  * requires it.  FIXME: We shouldn't
9546                                  * have to force the vtable/mrgctx
9547                                  * variable here.  Instead there
9548                                  * should be a flag in the cfg to
9549                                  * request a generic sharing context.
9550                                  */
9551                                 if (context_used &&
9552                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9553                                         mono_get_vtable_var (cfg);
9554                         }
9555
9556                         if (pass_vtable) {
9557                                 if (context_used) {
9558                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9559                                 } else {
9560                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9561
9562                                         CHECK_TYPELOAD (cmethod->klass);
9563                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9564                                 }
9565                         }
9566
9567                         if (pass_mrgctx) {
9568                                 g_assert (!vtable_arg);
9569
9570                                 if (!cfg->compile_aot) {
9571                                         /*
9572                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9573                                          * for type load errors before.
9574                                          */
9575                                         mono_class_setup_vtable (cmethod->klass);
9576                                         CHECK_TYPELOAD (cmethod->klass);
9577                                 }
9578
9579                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9580
9581                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9582                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9583                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9584                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9585                                         if (virtual_)
9586                                                 check_this = TRUE;
9587                                         virtual_ = 0;
9588                                 }
9589                         }
9590
9591                         if (pass_imt_from_rgctx) {
9592                                 g_assert (!pass_vtable);
9593
9594                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9595                                         cmethod, MONO_RGCTX_INFO_METHOD);
9596                         }
9597
9598                         if (check_this)
9599                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9600
9601                         /* Calling virtual generic methods */
9602                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9603                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9604                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9605                             fsig->generic_param_count &&
9606                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9607                                 !cfg->llvm_only) {
9608                                 MonoInst *this_temp, *this_arg_temp, *store;
9609                                 MonoInst *iargs [4];
9610
9611                                 g_assert (fsig->is_inflated);
9612
9613                                 /* Prevent inlining of methods that contain indirect calls */
9614                                 INLINE_FAILURE ("virtual generic call");
9615
9616                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9617                                         GSHAREDVT_FAILURE (*ip);
9618
9619                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9620                                         g_assert (!imt_arg);
9621                                         if (!context_used)
9622                                                 g_assert (cmethod->is_inflated);
9623                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9624                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9625                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9626                                 } else {
9627                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9628                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9629                                         MONO_ADD_INS (cfg->cbb, store);
9630
9631                                         /* FIXME: This should be a managed pointer */
9632                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9633
9634                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9635                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9636                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9637                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9638                                         addr = mono_emit_jit_icall (cfg,
9639                                                                                                 mono_helper_compile_generic_method, iargs);
9640
9641                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9642
9643                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9644                                 }
9645
9646                                 goto call_end;
9647                         }
9648
9649                         /*
9650                          * Implement a workaround for the inherent races involved in locking:
9651                          * Monitor.Enter ()
9652                          * try {
9653                          * } finally {
9654                          *    Monitor.Exit ()
9655                          * }
9656                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9657                          * try block, the Exit () won't be executed, see:
9658                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9659                          * To work around this, we extend such try blocks to include the last x bytes
9660                          * of the Monitor.Enter () call.
9661                          */
9662                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9663                                 MonoBasicBlock *tbb;
9664
9665                                 GET_BBLOCK (cfg, tbb, ip + 5);
9666                                 /*
9667                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9668                                  * from Monitor.Enter like ArgumentNullException.
9669                                  */
9670                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9671                                         /* Mark this bblock as needing to be extended */
9672                                         tbb->extend_try_block = TRUE;
9673                                 }
9674                         }
9675
9676                         /* Conversion to a JIT intrinsic */
9677                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9678                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9679                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9680                                         emit_widen = FALSE;
9681                                 }
9682                                 goto call_end;
9683                         }
9684                         CHECK_CFG_ERROR;
9685
9686                         /* Inlining */
9687                         if ((cfg->opt & MONO_OPT_INLINE) &&
9688                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9689                             mono_method_check_inlining (cfg, cmethod)) {
9690                                 int costs;
9691                                 gboolean always = FALSE;
9692
9693                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9694                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9695                                         /* Prevent inlining of methods that call wrappers */
9696                                         INLINE_FAILURE ("wrapper call");
9697                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9698                                         always = TRUE;
9699                                 }
9700
9701                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9702                                 if (costs) {
9703                                         cfg->real_offset += 5;
9704
9705                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9706                                                 /* *sp is already set by inline_method */
9707                                                 sp++;
9708                                                 push_res = FALSE;
9709                                         }
9710
9711                                         inline_costs += costs;
9712
9713                                         goto call_end;
9714                                 }
9715                         }
9716
9717                         /* Tail recursion elimination */
9718                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9719                                 gboolean has_vtargs = FALSE;
9720                                 int i;
9721
9722                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9723                                 INLINE_FAILURE ("tail call");
9724
9725                                 /* keep it simple */
9726                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9727                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9728                                                 has_vtargs = TRUE;
9729                                 }
9730
9731                                 if (!has_vtargs) {
9732                                         for (i = 0; i < n; ++i)
9733                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9734                                         MONO_INST_NEW (cfg, ins, OP_BR);
9735                                         MONO_ADD_INS (cfg->cbb, ins);
9736                                         tblock = start_bblock->out_bb [0];
9737                                         link_bblock (cfg, cfg->cbb, tblock);
9738                                         ins->inst_target_bb = tblock;
9739                                         start_new_bblock = 1;
9740
9741                                         /* skip the CEE_RET, too */
9742                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9743                                                 skip_ret = TRUE;
9744                                         push_res = FALSE;
9745                                         goto call_end;
9746                                 }
9747                         }
9748
9749                         inline_costs += 10 * num_calls++;
9750
9751                         /*
9752                          * Synchronized wrappers.
9753                          * Its hard to determine where to replace a method with its synchronized
9754                          * wrapper without causing an infinite recursion. The current solution is
9755                          * to add the synchronized wrapper in the trampolines, and to
9756                          * change the called method to a dummy wrapper, and resolve that wrapper
9757                          * to the real method in mono_jit_compile_method ().
9758                          */
9759                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9760                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9761                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9762                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9763                         }
9764
9765                         /*
9766                          * Making generic calls out of gsharedvt methods.
9767                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9768                          * patching gshared method addresses into a gsharedvt method.
9769                          */
9770                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9771                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9772                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9773                                 MonoRgctxInfoType info_type;
9774
9775                                 if (virtual_) {
9776                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9777                                                 //GSHAREDVT_FAILURE (*ip);
9778                                         // disable for possible remoting calls
9779                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9780                                                 GSHAREDVT_FAILURE (*ip);
9781                                         if (fsig->generic_param_count) {
9782                                                 /* virtual generic call */
9783                                                 g_assert (!imt_arg);
9784                                                 /* Same as the virtual generic case above */
9785                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9786                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9787                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9788                                                 vtable_arg = NULL;
9789                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9790                                                 /* This can happen when we call a fully instantiated iface method */
9791                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9792                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9793                                                 vtable_arg = NULL;
9794                                         }
9795                                 }
9796
9797                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9798                                         keep_this_alive = sp [0];
9799
9800                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9801                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9802                                 else
9803                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9804                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9805
9806                                 if (cfg->llvm_only) {
9807                                         // FIXME: Avoid initializing vtable_arg
9808                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9809                                 } else {
9810                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9811                                 }
9812                                 goto call_end;
9813                         }
9814
9815                         /* Generic sharing */
9816
9817                         /*
9818                          * Use this if the callee is gsharedvt sharable too, since
9819                          * at runtime we might find an instantiation so the call cannot
9820                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9821                          */
9822                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9823                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9824                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9825                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9826                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9827                                 INLINE_FAILURE ("gshared");
9828
9829                                 g_assert (cfg->gshared && cmethod);
9830                                 g_assert (!addr);
9831
9832                                 /*
9833                                  * We are compiling a call to a
9834                                  * generic method from shared code,
9835                                  * which means that we have to look up
9836                                  * the method in the rgctx and do an
9837                                  * indirect call.
9838                                  */
9839                                 if (fsig->hasthis)
9840                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9841
9842                                 if (cfg->llvm_only) {
9843                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9844                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9845                                         else
9846                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9847                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9848                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9849                                 } else {
9850                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9851                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9852                                 }
9853                                 goto call_end;
9854                         }
9855
9856                         /* Direct calls to icalls */
9857                         if (direct_icall) {
9858                                 MonoMethod *wrapper;
9859                                 int costs;
9860
9861                                 /* Inline the wrapper */
9862                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9863
9864                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9865                                 g_assert (costs > 0);
9866                                 cfg->real_offset += 5;
9867
9868                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9869                                         /* *sp is already set by inline_method */
9870                                         sp++;
9871                                         push_res = FALSE;
9872                                 }
9873
9874                                 inline_costs += costs;
9875
9876                                 goto call_end;
9877                         }
9878
9879                         /* Array methods */
9880                         if (array_rank) {
9881                                 MonoInst *addr;
9882
9883                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9884                                         MonoInst *val = sp [fsig->param_count];
9885
9886                                         if (val->type == STACK_OBJ) {
9887                                                 MonoInst *iargs [2];
9888
9889                                                 iargs [0] = sp [0];
9890                                                 iargs [1] = val;
9891
9892                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9893                                         }
9894
9895                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9896                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9897                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9898                                                 emit_write_barrier (cfg, addr, val);
9899                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9900                                                 GSHAREDVT_FAILURE (*ip);
9901                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9902                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9903
9904                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9905                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9906                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9907                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9908                                         CHECK_TYPELOAD (cmethod->klass);
9909
9910                                         readonly = FALSE;
9911                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9912                                         ins = addr;
9913                                 } else {
9914                                         g_assert_not_reached ();
9915                                 }
9916
9917                                 emit_widen = FALSE;
9918                                 goto call_end;
9919                         }
9920
9921                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9922                         if (ins)
9923                                 goto call_end;
9924
9925                         /* Tail prefix / tail call optimization */
9926
9927                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9928                         /* FIXME: runtime generic context pointer for jumps? */
9929                         /* FIXME: handle this for generic sharing eventually */
9930                         if ((ins_flag & MONO_INST_TAILCALL) &&
9931                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9932                                 supported_tail_call = TRUE;
9933
9934                         if (supported_tail_call) {
9935                                 MonoCallInst *call;
9936
9937                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9938                                 INLINE_FAILURE ("tail call");
9939
9940                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9941
9942                                 if (cfg->backend->have_op_tail_call) {
9943                                         /* Handle tail calls similarly to normal calls */
9944                                         tail_call = TRUE;
9945                                 } else {
9946                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9947
9948                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9949                                         call->tail_call = TRUE;
9950                                         call->method = cmethod;
9951                                         call->signature = mono_method_signature (cmethod);
9952
9953                                         /*
9954                                          * We implement tail calls by storing the actual arguments into the
9955                                          * argument variables, then emitting a CEE_JMP.
9956                                          */
9957                                         for (i = 0; i < n; ++i) {
9958                                                 /* Prevent argument from being register allocated */
9959                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9960                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9961                                         }
9962                                         ins = (MonoInst*)call;
9963                                         ins->inst_p0 = cmethod;
9964                                         ins->inst_p1 = arg_array [0];
9965                                         MONO_ADD_INS (cfg->cbb, ins);
9966                                         link_bblock (cfg, cfg->cbb, end_bblock);
9967                                         start_new_bblock = 1;
9968
9969                                         // FIXME: Eliminate unreachable epilogs
9970
9971                                         /*
9972                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9973                                          * only reachable from this call.
9974                                          */
9975                                         GET_BBLOCK (cfg, tblock, ip + 5);
9976                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9977                                                 skip_ret = TRUE;
9978                                         push_res = FALSE;
9979
9980                                         goto call_end;
9981                                 }
9982                         }
9983
9984                         /*
9985                          * Virtual calls in llvm-only mode.
9986                          */
9987                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9988                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9989                                 goto call_end;
9990                         }
9991
9992                         /* Common call */
9993                         INLINE_FAILURE ("call");
9994                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9995                                                                                           imt_arg, vtable_arg);
9996
9997                         if (tail_call && !cfg->llvm_only) {
9998                                 link_bblock (cfg, cfg->cbb, end_bblock);
9999                                 start_new_bblock = 1;
10000
10001                                 // FIXME: Eliminate unreachable epilogs
10002
10003                                 /*
10004                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10005                                  * only reachable from this call.
10006                                  */
10007                                 GET_BBLOCK (cfg, tblock, ip + 5);
10008                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10009                                         skip_ret = TRUE;
10010                                 push_res = FALSE;
10011                         }
10012
10013                         call_end:
10014
10015                         /* End of call, INS should contain the result of the call, if any */
10016
10017                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10018                                 g_assert (ins);
10019                                 if (emit_widen)
10020                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10021                                 else
10022                                         *sp++ = ins;
10023                         }
10024
10025                         if (keep_this_alive) {
10026                                 MonoInst *dummy_use;
10027
10028                                 /* See mono_emit_method_call_full () */
10029                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10030                         }
10031
10032                         CHECK_CFG_EXCEPTION;
10033
10034                         ip += 5;
10035                         if (skip_ret) {
10036                                 g_assert (*ip == CEE_RET);
10037                                 ip += 1;
10038                         }
10039                         ins_flag = 0;
10040                         constrained_class = NULL;
10041                         if (need_seq_point)
10042                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10043                         break;
10044                 }
10045                 case CEE_RET:
10046                         if (cfg->method != method) {
10047                                 /* return from inlined method */
10048                                 /*
10049                                  * If in_count == 0, that means the ret is unreachable due to
10050                                  * being preceeded by a throw. In that case, inline_method () will
10051                                  * handle setting the return value
10052                                  * (test case: test_0_inline_throw ()).
10053                                  */
10054                                 if (return_var && cfg->cbb->in_count) {
10055                                         MonoType *ret_type = mono_method_signature (method)->ret;
10056
10057                                         MonoInst *store;
10058                                         CHECK_STACK (1);
10059                                         --sp;
10060
10061                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10062                                                 UNVERIFIED;
10063
10064                                         //g_assert (returnvar != -1);
10065                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10066                                         cfg->ret_var_set = TRUE;
10067                                 }
10068                         } else {
10069                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10070
10071                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10072                                         emit_pop_lmf (cfg);
10073
10074                                 if (cfg->ret) {
10075                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10076
10077                                         if (seq_points && !sym_seq_points) {
10078                                                 /*
10079                                                  * Place a seq point here too even through the IL stack is not
10080                                                  * empty, so a step over on
10081                                                  * call <FOO>
10082                                                  * ret
10083                                                  * will work correctly.
10084                                                  */
10085                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10086                                                 MONO_ADD_INS (cfg->cbb, ins);
10087                                         }
10088
10089                                         g_assert (!return_var);
10090                                         CHECK_STACK (1);
10091                                         --sp;
10092
10093                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10094                                                 UNVERIFIED;
10095
10096                                         emit_setret (cfg, *sp);
10097                                 }
10098                         }
10099                         if (sp != stack_start)
10100                                 UNVERIFIED;
10101                         MONO_INST_NEW (cfg, ins, OP_BR);
10102                         ip++;
10103                         ins->inst_target_bb = end_bblock;
10104                         MONO_ADD_INS (cfg->cbb, ins);
10105                         link_bblock (cfg, cfg->cbb, end_bblock);
10106                         start_new_bblock = 1;
10107                         break;
10108                 case CEE_BR_S:
10109                         CHECK_OPSIZE (2);
10110                         MONO_INST_NEW (cfg, ins, OP_BR);
10111                         ip++;
10112                         target = ip + 1 + (signed char)(*ip);
10113                         ++ip;
10114                         GET_BBLOCK (cfg, tblock, target);
10115                         link_bblock (cfg, cfg->cbb, tblock);
10116                         ins->inst_target_bb = tblock;
10117                         if (sp != stack_start) {
10118                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10119                                 sp = stack_start;
10120                                 CHECK_UNVERIFIABLE (cfg);
10121                         }
10122                         MONO_ADD_INS (cfg->cbb, ins);
10123                         start_new_bblock = 1;
10124                         inline_costs += BRANCH_COST;
10125                         break;
10126                 case CEE_BEQ_S:
10127                 case CEE_BGE_S:
10128                 case CEE_BGT_S:
10129                 case CEE_BLE_S:
10130                 case CEE_BLT_S:
10131                 case CEE_BNE_UN_S:
10132                 case CEE_BGE_UN_S:
10133                 case CEE_BGT_UN_S:
10134                 case CEE_BLE_UN_S:
10135                 case CEE_BLT_UN_S:
10136                         CHECK_OPSIZE (2);
10137                         CHECK_STACK (2);
10138                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10139                         ip++;
10140                         target = ip + 1 + *(signed char*)ip;
10141                         ip++;
10142
10143                         ADD_BINCOND (NULL);
10144
10145                         sp = stack_start;
10146                         inline_costs += BRANCH_COST;
10147                         break;
10148                 case CEE_BR:
10149                         CHECK_OPSIZE (5);
10150                         MONO_INST_NEW (cfg, ins, OP_BR);
10151                         ip++;
10152
10153                         target = ip + 4 + (gint32)read32(ip);
10154                         ip += 4;
10155                         GET_BBLOCK (cfg, tblock, target);
10156                         link_bblock (cfg, cfg->cbb, tblock);
10157                         ins->inst_target_bb = tblock;
10158                         if (sp != stack_start) {
10159                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10160                                 sp = stack_start;
10161                                 CHECK_UNVERIFIABLE (cfg);
10162                         }
10163
10164                         MONO_ADD_INS (cfg->cbb, ins);
10165
10166                         start_new_bblock = 1;
10167                         inline_costs += BRANCH_COST;
10168                         break;
10169                 case CEE_BRFALSE_S:
10170                 case CEE_BRTRUE_S:
10171                 case CEE_BRFALSE:
10172                 case CEE_BRTRUE: {
10173                         MonoInst *cmp;
10174                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10175                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10176                         guint32 opsize = is_short ? 1 : 4;
10177
10178                         CHECK_OPSIZE (opsize);
10179                         CHECK_STACK (1);
10180                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10181                                 UNVERIFIED;
10182                         ip ++;
10183                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10184                         ip += opsize;
10185
10186                         sp--;
10187
10188                         GET_BBLOCK (cfg, tblock, target);
10189                         link_bblock (cfg, cfg->cbb, tblock);
10190                         GET_BBLOCK (cfg, tblock, ip);
10191                         link_bblock (cfg, cfg->cbb, tblock);
10192
10193                         if (sp != stack_start) {
10194                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10195                                 CHECK_UNVERIFIABLE (cfg);
10196                         }
10197
10198                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10199                         cmp->sreg1 = sp [0]->dreg;
10200                         type_from_op (cfg, cmp, sp [0], NULL);
10201                         CHECK_TYPE (cmp);
10202
10203 #if SIZEOF_REGISTER == 4
10204                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10205                                 /* Convert it to OP_LCOMPARE */
10206                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10207                                 ins->type = STACK_I8;
10208                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10209                                 ins->inst_l = 0;
10210                                 MONO_ADD_INS (cfg->cbb, ins);
10211                                 cmp->opcode = OP_LCOMPARE;
10212                                 cmp->sreg2 = ins->dreg;
10213                         }
10214 #endif
10215                         MONO_ADD_INS (cfg->cbb, cmp);
10216
10217                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10218                         type_from_op (cfg, ins, sp [0], NULL);
10219                         MONO_ADD_INS (cfg->cbb, ins);
10220                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10221                         GET_BBLOCK (cfg, tblock, target);
10222                         ins->inst_true_bb = tblock;
10223                         GET_BBLOCK (cfg, tblock, ip);
10224                         ins->inst_false_bb = tblock;
10225                         start_new_bblock = 2;
10226
10227                         sp = stack_start;
10228                         inline_costs += BRANCH_COST;
10229                         break;
10230                 }
10231                 case CEE_BEQ:
10232                 case CEE_BGE:
10233                 case CEE_BGT:
10234                 case CEE_BLE:
10235                 case CEE_BLT:
10236                 case CEE_BNE_UN:
10237                 case CEE_BGE_UN:
10238                 case CEE_BGT_UN:
10239                 case CEE_BLE_UN:
10240                 case CEE_BLT_UN:
10241                         CHECK_OPSIZE (5);
10242                         CHECK_STACK (2);
10243                         MONO_INST_NEW (cfg, ins, *ip);
10244                         ip++;
10245                         target = ip + 4 + (gint32)read32(ip);
10246                         ip += 4;
10247
10248                         ADD_BINCOND (NULL);
10249
10250                         sp = stack_start;
10251                         inline_costs += BRANCH_COST;
10252                         break;
10253                 case CEE_SWITCH: {
10254                         MonoInst *src1;
10255                         MonoBasicBlock **targets;
10256                         MonoBasicBlock *default_bblock;
10257                         MonoJumpInfoBBTable *table;
10258                         int offset_reg = alloc_preg (cfg);
10259                         int target_reg = alloc_preg (cfg);
10260                         int table_reg = alloc_preg (cfg);
10261                         int sum_reg = alloc_preg (cfg);
10262                         gboolean use_op_switch;
10263
10264                         CHECK_OPSIZE (5);
10265                         CHECK_STACK (1);
10266                         n = read32 (ip + 1);
10267                         --sp;
10268                         src1 = sp [0];
10269                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10270                                 UNVERIFIED;
10271
10272                         ip += 5;
10273                         CHECK_OPSIZE (n * sizeof (guint32));
10274                         target = ip + n * sizeof (guint32);
10275
10276                         GET_BBLOCK (cfg, default_bblock, target);
10277                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10278
10279                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10280                         for (i = 0; i < n; ++i) {
10281                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10282                                 targets [i] = tblock;
10283                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10284                                 ip += 4;
10285                         }
10286
10287                         if (sp != stack_start) {
10288                                 /*
10289                                  * Link the current bb with the targets as well, so handle_stack_args
10290                                  * will set their in_stack correctly.
10291                                  */
10292                                 link_bblock (cfg, cfg->cbb, default_bblock);
10293                                 for (i = 0; i < n; ++i)
10294                                         link_bblock (cfg, cfg->cbb, targets [i]);
10295
10296                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10297                                 sp = stack_start;
10298                                 CHECK_UNVERIFIABLE (cfg);
10299
10300                                 /* Undo the links */
10301                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10302                                 for (i = 0; i < n; ++i)
10303                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10304                         }
10305
10306                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10307                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10308
10309                         for (i = 0; i < n; ++i)
10310                                 link_bblock (cfg, cfg->cbb, targets [i]);
10311
10312                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10313                         table->table = targets;
10314                         table->table_size = n;
10315
10316                         use_op_switch = FALSE;
10317 #ifdef TARGET_ARM
10318                         /* ARM implements SWITCH statements differently */
10319                         /* FIXME: Make it use the generic implementation */
10320                         if (!cfg->compile_aot)
10321                                 use_op_switch = TRUE;
10322 #endif
10323
10324                         if (COMPILE_LLVM (cfg))
10325                                 use_op_switch = TRUE;
10326
10327                         cfg->cbb->has_jump_table = 1;
10328
10329                         if (use_op_switch) {
10330                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10331                                 ins->sreg1 = src1->dreg;
10332                                 ins->inst_p0 = table;
10333                                 ins->inst_many_bb = targets;
10334                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10335                                 MONO_ADD_INS (cfg->cbb, ins);
10336                         } else {
10337                                 if (sizeof (gpointer) == 8)
10338                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10339                                 else
10340                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10341
10342 #if SIZEOF_REGISTER == 8
10343                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10344                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10345 #endif
10346
10347                                 if (cfg->compile_aot) {
10348                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10349                                 } else {
10350                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10351                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10352                                         ins->inst_p0 = table;
10353                                         ins->dreg = table_reg;
10354                                         MONO_ADD_INS (cfg->cbb, ins);
10355                                 }
10356
10357                                 /* FIXME: Use load_memindex */
10358                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10359                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10360                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10361                         }
10362                         start_new_bblock = 1;
10363                         inline_costs += (BRANCH_COST * 2);
10364                         break;
10365                 }
10366                 case CEE_LDIND_I1:
10367                 case CEE_LDIND_U1:
10368                 case CEE_LDIND_I2:
10369                 case CEE_LDIND_U2:
10370                 case CEE_LDIND_I4:
10371                 case CEE_LDIND_U4:
10372                 case CEE_LDIND_I8:
10373                 case CEE_LDIND_I:
10374                 case CEE_LDIND_R4:
10375                 case CEE_LDIND_R8:
10376                 case CEE_LDIND_REF:
10377                         CHECK_STACK (1);
10378                         --sp;
10379
10380                         switch (*ip) {
10381                         case CEE_LDIND_R4:
10382                         case CEE_LDIND_R8:
10383                                 dreg = alloc_freg (cfg);
10384                                 break;
10385                         case CEE_LDIND_I8:
10386                                 dreg = alloc_lreg (cfg);
10387                                 break;
10388                         case CEE_LDIND_REF:
10389                                 dreg = alloc_ireg_ref (cfg);
10390                                 break;
10391                         default:
10392                                 dreg = alloc_preg (cfg);
10393                         }
10394
10395                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10396                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10397                         if (*ip == CEE_LDIND_R4)
10398                                 ins->type = cfg->r4_stack_type;
10399                         ins->flags |= ins_flag;
10400                         MONO_ADD_INS (cfg->cbb, ins);
10401                         *sp++ = ins;
10402                         if (ins_flag & MONO_INST_VOLATILE) {
10403                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10404                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10405                         }
10406                         ins_flag = 0;
10407                         ++ip;
10408                         break;
10409                 case CEE_STIND_REF:
10410                 case CEE_STIND_I1:
10411                 case CEE_STIND_I2:
10412                 case CEE_STIND_I4:
10413                 case CEE_STIND_I8:
10414                 case CEE_STIND_R4:
10415                 case CEE_STIND_R8:
10416                 case CEE_STIND_I:
10417                         CHECK_STACK (2);
10418                         sp -= 2;
10419
10420                         if (ins_flag & MONO_INST_VOLATILE) {
10421                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10422                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10423                         }
10424
10425                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10426                         ins->flags |= ins_flag;
10427                         ins_flag = 0;
10428
10429                         MONO_ADD_INS (cfg->cbb, ins);
10430
10431                         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)))
10432                                 emit_write_barrier (cfg, sp [0], sp [1]);
10433
10434                         inline_costs += 1;
10435                         ++ip;
10436                         break;
10437
10438                 case CEE_MUL:
10439                         CHECK_STACK (2);
10440
10441                         MONO_INST_NEW (cfg, ins, (*ip));
10442                         sp -= 2;
10443                         ins->sreg1 = sp [0]->dreg;
10444                         ins->sreg2 = sp [1]->dreg;
10445                         type_from_op (cfg, ins, sp [0], sp [1]);
10446                         CHECK_TYPE (ins);
10447                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10448
10449                         /* Use the immediate opcodes if possible */
10450                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10451                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10452                                 if (imm_opcode != -1) {
10453                                         ins->opcode = imm_opcode;
10454                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10455                                         ins->sreg2 = -1;
10456
10457                                         NULLIFY_INS (sp [1]);
10458                                 }
10459                         }
10460
10461                         MONO_ADD_INS ((cfg)->cbb, (ins));
10462
10463                         *sp++ = mono_decompose_opcode (cfg, ins);
10464                         ip++;
10465                         break;
10466                 case CEE_ADD:
10467                 case CEE_SUB:
10468                 case CEE_DIV:
10469                 case CEE_DIV_UN:
10470                 case CEE_REM:
10471                 case CEE_REM_UN:
10472                 case CEE_AND:
10473                 case CEE_OR:
10474                 case CEE_XOR:
10475                 case CEE_SHL:
10476                 case CEE_SHR:
10477                 case CEE_SHR_UN:
10478                         CHECK_STACK (2);
10479
10480                         MONO_INST_NEW (cfg, ins, (*ip));
10481                         sp -= 2;
10482                         ins->sreg1 = sp [0]->dreg;
10483                         ins->sreg2 = sp [1]->dreg;
10484                         type_from_op (cfg, ins, sp [0], sp [1]);
10485                         CHECK_TYPE (ins);
10486                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10487                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10488
10489                         /* FIXME: Pass opcode to is_inst_imm */
10490
10491                         /* Use the immediate opcodes if possible */
10492                         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)) {
10493                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10494                                 if (imm_opcode != -1) {
10495                                         ins->opcode = imm_opcode;
10496                                         if (sp [1]->opcode == OP_I8CONST) {
10497 #if SIZEOF_REGISTER == 8
10498                                                 ins->inst_imm = sp [1]->inst_l;
10499 #else
10500                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10501                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10502 #endif
10503                                         }
10504                                         else
10505                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10506                                         ins->sreg2 = -1;
10507
10508                                         /* Might be followed by an instruction added by add_widen_op */
10509                                         if (sp [1]->next == NULL)
10510                                                 NULLIFY_INS (sp [1]);
10511                                 }
10512                         }
10513                         MONO_ADD_INS ((cfg)->cbb, (ins));
10514
10515                         *sp++ = mono_decompose_opcode (cfg, ins);
10516                         ip++;
10517                         break;
10518                 case CEE_NEG:
10519                 case CEE_NOT:
10520                 case CEE_CONV_I1:
10521                 case CEE_CONV_I2:
10522                 case CEE_CONV_I4:
10523                 case CEE_CONV_R4:
10524                 case CEE_CONV_R8:
10525                 case CEE_CONV_U4:
10526                 case CEE_CONV_I8:
10527                 case CEE_CONV_U8:
10528                 case CEE_CONV_OVF_I8:
10529                 case CEE_CONV_OVF_U8:
10530                 case CEE_CONV_R_UN:
10531                         CHECK_STACK (1);
10532
10533                         /* Special case this earlier so we have long constants in the IR */
10534                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10535                                 int data = sp [-1]->inst_c0;
10536                                 sp [-1]->opcode = OP_I8CONST;
10537                                 sp [-1]->type = STACK_I8;
10538 #if SIZEOF_REGISTER == 8
10539                                 if ((*ip) == CEE_CONV_U8)
10540                                         sp [-1]->inst_c0 = (guint32)data;
10541                                 else
10542                                         sp [-1]->inst_c0 = data;
10543 #else
10544                                 sp [-1]->inst_ls_word = data;
10545                                 if ((*ip) == CEE_CONV_U8)
10546                                         sp [-1]->inst_ms_word = 0;
10547                                 else
10548                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10549 #endif
10550                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10551                         }
10552                         else {
10553                                 ADD_UNOP (*ip);
10554                         }
10555                         ip++;
10556                         break;
10557                 case CEE_CONV_OVF_I4:
10558                 case CEE_CONV_OVF_I1:
10559                 case CEE_CONV_OVF_I2:
10560                 case CEE_CONV_OVF_I:
10561                 case CEE_CONV_OVF_U:
10562                         CHECK_STACK (1);
10563
10564                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10565                                 ADD_UNOP (CEE_CONV_OVF_I8);
10566                                 ADD_UNOP (*ip);
10567                         } else {
10568                                 ADD_UNOP (*ip);
10569                         }
10570                         ip++;
10571                         break;
10572                 case CEE_CONV_OVF_U1:
10573                 case CEE_CONV_OVF_U2:
10574                 case CEE_CONV_OVF_U4:
10575                         CHECK_STACK (1);
10576
10577                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10578                                 ADD_UNOP (CEE_CONV_OVF_U8);
10579                                 ADD_UNOP (*ip);
10580                         } else {
10581                                 ADD_UNOP (*ip);
10582                         }
10583                         ip++;
10584                         break;
10585                 case CEE_CONV_OVF_I1_UN:
10586                 case CEE_CONV_OVF_I2_UN:
10587                 case CEE_CONV_OVF_I4_UN:
10588                 case CEE_CONV_OVF_I8_UN:
10589                 case CEE_CONV_OVF_U1_UN:
10590                 case CEE_CONV_OVF_U2_UN:
10591                 case CEE_CONV_OVF_U4_UN:
10592                 case CEE_CONV_OVF_U8_UN:
10593                 case CEE_CONV_OVF_I_UN:
10594                 case CEE_CONV_OVF_U_UN:
10595                 case CEE_CONV_U2:
10596                 case CEE_CONV_U1:
10597                 case CEE_CONV_I:
10598                 case CEE_CONV_U:
10599                         CHECK_STACK (1);
10600                         ADD_UNOP (*ip);
10601                         CHECK_CFG_EXCEPTION;
10602                         ip++;
10603                         break;
10604                 case CEE_ADD_OVF:
10605                 case CEE_ADD_OVF_UN:
10606                 case CEE_MUL_OVF:
10607                 case CEE_MUL_OVF_UN:
10608                 case CEE_SUB_OVF:
10609                 case CEE_SUB_OVF_UN:
10610                         CHECK_STACK (2);
10611                         ADD_BINOP (*ip);
10612                         ip++;
10613                         break;
10614                 case CEE_CPOBJ:
10615                         GSHAREDVT_FAILURE (*ip);
10616                         CHECK_OPSIZE (5);
10617                         CHECK_STACK (2);
10618                         token = read32 (ip + 1);
10619                         klass = mini_get_class (method, token, generic_context);
10620                         CHECK_TYPELOAD (klass);
10621                         sp -= 2;
10622                         if (generic_class_is_reference_type (cfg, klass)) {
10623                                 MonoInst *store, *load;
10624                                 int dreg = alloc_ireg_ref (cfg);
10625
10626                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10627                                 load->flags |= ins_flag;
10628                                 MONO_ADD_INS (cfg->cbb, load);
10629
10630                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10631                                 store->flags |= ins_flag;
10632                                 MONO_ADD_INS (cfg->cbb, store);
10633
10634                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10635                                         emit_write_barrier (cfg, sp [0], sp [1]);
10636                         } else {
10637                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10638                         }
10639                         ins_flag = 0;
10640                         ip += 5;
10641                         break;
10642                 case CEE_LDOBJ: {
10643                         int loc_index = -1;
10644                         int stloc_len = 0;
10645
10646                         CHECK_OPSIZE (5);
10647                         CHECK_STACK (1);
10648                         --sp;
10649                         token = read32 (ip + 1);
10650                         klass = mini_get_class (method, token, generic_context);
10651                         CHECK_TYPELOAD (klass);
10652
10653                         /* Optimize the common ldobj+stloc combination */
10654                         switch (ip [5]) {
10655                         case CEE_STLOC_S:
10656                                 loc_index = ip [6];
10657                                 stloc_len = 2;
10658                                 break;
10659                         case CEE_STLOC_0:
10660                         case CEE_STLOC_1:
10661                         case CEE_STLOC_2:
10662                         case CEE_STLOC_3:
10663                                 loc_index = ip [5] - CEE_STLOC_0;
10664                                 stloc_len = 1;
10665                                 break;
10666                         default:
10667                                 break;
10668                         }
10669
10670                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10671                                 CHECK_LOCAL (loc_index);
10672
10673                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10674                                 ins->dreg = cfg->locals [loc_index]->dreg;
10675                                 ins->flags |= ins_flag;
10676                                 ip += 5;
10677                                 ip += stloc_len;
10678                                 if (ins_flag & MONO_INST_VOLATILE) {
10679                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10680                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10681                                 }
10682                                 ins_flag = 0;
10683                                 break;
10684                         }
10685
10686                         /* Optimize the ldobj+stobj combination */
10687                         /* The reference case ends up being a load+store anyway */
10688                         /* Skip this if the operation is volatile. */
10689                         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)) {
10690                                 CHECK_STACK (1);
10691
10692                                 sp --;
10693
10694                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10695
10696                                 ip += 5 + 5;
10697                                 ins_flag = 0;
10698                                 break;
10699                         }
10700
10701                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10702                         ins->flags |= ins_flag;
10703                         *sp++ = ins;
10704
10705                         if (ins_flag & MONO_INST_VOLATILE) {
10706                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10707                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10708                         }
10709
10710                         ip += 5;
10711                         ins_flag = 0;
10712                         inline_costs += 1;
10713                         break;
10714                 }
10715                 case CEE_LDSTR:
10716                         CHECK_STACK_OVF (1);
10717                         CHECK_OPSIZE (5);
10718                         n = read32 (ip + 1);
10719
10720                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10721                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10722                                 ins->type = STACK_OBJ;
10723                                 *sp = ins;
10724                         }
10725                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10726                                 MonoInst *iargs [1];
10727                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10728
10729                                 if (cfg->compile_aot)
10730                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10731                                 else
10732                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10733                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10734                         } else {
10735                                 if (cfg->opt & MONO_OPT_SHARED) {
10736                                         MonoInst *iargs [3];
10737
10738                                         if (cfg->compile_aot) {
10739                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10740                                         }
10741                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10742                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10743                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10744                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10745                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10746                                         CHECK_CFG_ERROR;
10747                                 } else {
10748                                         if (cfg->cbb->out_of_line) {
10749                                                 MonoInst *iargs [2];
10750
10751                                                 if (image == mono_defaults.corlib) {
10752                                                         /*
10753                                                          * Avoid relocations in AOT and save some space by using a
10754                                                          * version of helper_ldstr specialized to mscorlib.
10755                                                          */
10756                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10757                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10758                                                 } else {
10759                                                         /* Avoid creating the string object */
10760                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10761                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10762                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10763                                                 }
10764                                         }
10765                                         else
10766                                         if (cfg->compile_aot) {
10767                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10768                                                 *sp = ins;
10769                                                 MONO_ADD_INS (cfg->cbb, ins);
10770                                         }
10771                                         else {
10772                                                 NEW_PCONST (cfg, ins, NULL);
10773                                                 ins->type = STACK_OBJ;
10774                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10775                                                 CHECK_CFG_ERROR;
10776
10777                                                 if (!ins->inst_p0)
10778                                                         OUT_OF_MEMORY_FAILURE;
10779
10780                                                 *sp = ins;
10781                                                 MONO_ADD_INS (cfg->cbb, ins);
10782                                         }
10783                                 }
10784                         }
10785
10786                         sp++;
10787                         ip += 5;
10788                         break;
10789                 case CEE_NEWOBJ: {
10790                         MonoInst *iargs [2];
10791                         MonoMethodSignature *fsig;
10792                         MonoInst this_ins;
10793                         MonoInst *alloc;
10794                         MonoInst *vtable_arg = NULL;
10795
10796                         CHECK_OPSIZE (5);
10797                         token = read32 (ip + 1);
10798                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10799                         CHECK_CFG_ERROR;
10800
10801                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10802                         CHECK_CFG_ERROR;
10803
10804                         mono_save_token_info (cfg, image, token, cmethod);
10805
10806                         if (!mono_class_init (cmethod->klass))
10807                                 TYPE_LOAD_ERROR (cmethod->klass);
10808
10809                         context_used = mini_method_check_context_used (cfg, cmethod);
10810
10811                         if (mono_security_core_clr_enabled ())
10812                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10813
10814                         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)) {
10815                                 emit_class_init (cfg, cmethod->klass);
10816                                 CHECK_TYPELOAD (cmethod->klass);
10817                         }
10818
10819                         /*
10820                         if (cfg->gsharedvt) {
10821                                 if (mini_is_gsharedvt_variable_signature (sig))
10822                                         GSHAREDVT_FAILURE (*ip);
10823                         }
10824                         */
10825
10826                         n = fsig->param_count;
10827                         CHECK_STACK (n);
10828
10829                         /*
10830                          * Generate smaller code for the common newobj <exception> instruction in
10831                          * argument checking code.
10832                          */
10833                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10834                                 is_exception_class (cmethod->klass) && n <= 2 &&
10835                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10836                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10837                                 MonoInst *iargs [3];
10838
10839                                 sp -= n;
10840
10841                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10842                                 switch (n) {
10843                                 case 0:
10844                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10845                                         break;
10846                                 case 1:
10847                                         iargs [1] = sp [0];
10848                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10849                                         break;
10850                                 case 2:
10851                                         iargs [1] = sp [0];
10852                                         iargs [2] = sp [1];
10853                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10854                                         break;
10855                                 default:
10856                                         g_assert_not_reached ();
10857                                 }
10858
10859                                 ip += 5;
10860                                 inline_costs += 5;
10861                                 break;
10862                         }
10863
10864                         /* move the args to allow room for 'this' in the first position */
10865                         while (n--) {
10866                                 --sp;
10867                                 sp [1] = sp [0];
10868                         }
10869
10870                         /* check_call_signature () requires sp[0] to be set */
10871                         this_ins.type = STACK_OBJ;
10872                         sp [0] = &this_ins;
10873                         if (check_call_signature (cfg, fsig, sp))
10874                                 UNVERIFIED;
10875
10876                         iargs [0] = NULL;
10877
10878                         if (mini_class_is_system_array (cmethod->klass)) {
10879                                 *sp = emit_get_rgctx_method (cfg, context_used,
10880                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10881
10882                                 /* Avoid varargs in the common case */
10883                                 if (fsig->param_count == 1)
10884                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10885                                 else if (fsig->param_count == 2)
10886                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10887                                 else if (fsig->param_count == 3)
10888                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10889                                 else if (fsig->param_count == 4)
10890                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10891                                 else
10892                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10893                         } else if (cmethod->string_ctor) {
10894                                 g_assert (!context_used);
10895                                 g_assert (!vtable_arg);
10896                                 /* we simply pass a null pointer */
10897                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10898                                 /* now call the string ctor */
10899                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10900                         } else {
10901                                 if (cmethod->klass->valuetype) {
10902                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10903                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10904                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10905
10906                                         alloc = NULL;
10907
10908                                         /*
10909                                          * The code generated by mini_emit_virtual_call () expects
10910                                          * iargs [0] to be a boxed instance, but luckily the vcall
10911                                          * will be transformed into a normal call there.
10912                                          */
10913                                 } else if (context_used) {
10914                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10915                                         *sp = alloc;
10916                                 } else {
10917                                         MonoVTable *vtable = NULL;
10918
10919                                         if (!cfg->compile_aot)
10920                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10921                                         CHECK_TYPELOAD (cmethod->klass);
10922
10923                                         /*
10924                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10925                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10926                                          * As a workaround, we call class cctors before allocating objects.
10927                                          */
10928                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10929                                                 emit_class_init (cfg, cmethod->klass);
10930                                                 if (cfg->verbose_level > 2)
10931                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10932                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10933                                         }
10934
10935                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10936                                         *sp = alloc;
10937                                 }
10938                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10939
10940                                 if (alloc)
10941                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10942
10943                                 /* Now call the actual ctor */
10944                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10945                                 CHECK_CFG_EXCEPTION;
10946                         }
10947
10948                         if (alloc == NULL) {
10949                                 /* Valuetype */
10950                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10951                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10952                                 *sp++= ins;
10953                         } else {
10954                                 *sp++ = alloc;
10955                         }
10956
10957                         ip += 5;
10958                         inline_costs += 5;
10959                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10960                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10961                         break;
10962                 }
10963                 case CEE_CASTCLASS:
10964                 case CEE_ISINST: {
10965                         CHECK_STACK (1);
10966                         --sp;
10967                         CHECK_OPSIZE (5);
10968                         token = read32 (ip + 1);
10969                         klass = mini_get_class (method, token, generic_context);
10970                         CHECK_TYPELOAD (klass);
10971                         if (sp [0]->type != STACK_OBJ)
10972                                 UNVERIFIED;
10973
10974                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10975                         ins->dreg = alloc_preg (cfg);
10976                         ins->sreg1 = (*sp)->dreg;
10977                         ins->klass = klass;
10978                         ins->type = STACK_OBJ;
10979                         MONO_ADD_INS (cfg->cbb, ins);
10980
10981                         CHECK_CFG_EXCEPTION;
10982                         *sp++ = ins;
10983                         ip += 5;
10984
10985                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10986                         break;
10987                 }
10988                 case CEE_UNBOX_ANY: {
10989                         MonoInst *res, *addr;
10990
10991                         CHECK_STACK (1);
10992                         --sp;
10993                         CHECK_OPSIZE (5);
10994                         token = read32 (ip + 1);
10995                         klass = mini_get_class (method, token, generic_context);
10996                         CHECK_TYPELOAD (klass);
10997
10998                         mono_save_token_info (cfg, image, token, klass);
10999
11000                         context_used = mini_class_check_context_used (cfg, klass);
11001
11002                         if (mini_is_gsharedvt_klass (klass)) {
11003                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11004                                 inline_costs += 2;
11005                         } else if (generic_class_is_reference_type (cfg, klass)) {
11006                                 MONO_INST_NEW (cfg, res, OP_CASTCLASS);
11007                                 res->dreg = alloc_preg (cfg);
11008                                 res->sreg1 = (*sp)->dreg;
11009                                 res->klass = klass;
11010                                 res->type = STACK_OBJ;
11011                                 MONO_ADD_INS (cfg->cbb, res);
11012                                 cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
11013                         } else if (mono_class_is_nullable (klass)) {
11014                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11015                         } else {
11016                                 addr = handle_unbox (cfg, klass, sp, context_used);
11017                                 /* LDOBJ */
11018                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11019                                 res = ins;
11020                                 inline_costs += 2;
11021                         }
11022
11023                         *sp ++ = res;
11024                         ip += 5;
11025                         break;
11026                 }
11027                 case CEE_BOX: {
11028                         MonoInst *val;
11029                         MonoClass *enum_class;
11030                         MonoMethod *has_flag;
11031
11032                         CHECK_STACK (1);
11033                         --sp;
11034                         val = *sp;
11035                         CHECK_OPSIZE (5);
11036                         token = read32 (ip + 1);
11037                         klass = mini_get_class (method, token, generic_context);
11038                         CHECK_TYPELOAD (klass);
11039
11040                         mono_save_token_info (cfg, image, token, klass);
11041
11042                         context_used = mini_class_check_context_used (cfg, klass);
11043
11044                         if (generic_class_is_reference_type (cfg, klass)) {
11045                                 *sp++ = val;
11046                                 ip += 5;
11047                                 break;
11048                         }
11049
11050                         if (klass == mono_defaults.void_class)
11051                                 UNVERIFIED;
11052                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11053                                 UNVERIFIED;
11054                         /* frequent check in generic code: box (struct), brtrue */
11055
11056                         /*
11057                          * Look for:
11058                          *
11059                          *   <push int/long ptr>
11060                          *   <push int/long>
11061                          *   box MyFlags
11062                          *   constrained. MyFlags
11063                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11064                          *
11065                          * If we find this sequence and the operand types on box and constrained
11066                          * are equal, we can emit a specialized instruction sequence instead of
11067                          * the very slow HasFlag () call.
11068                          */
11069                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11070                             /* Cheap checks first. */
11071                             ip + 5 + 6 + 5 < end &&
11072                             ip [5] == CEE_PREFIX1 &&
11073                             ip [6] == CEE_CONSTRAINED_ &&
11074                             ip [11] == CEE_CALLVIRT &&
11075                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11076                             mono_class_is_enum (klass) &&
11077                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11078                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11079                             has_flag->klass == mono_defaults.enum_class &&
11080                             !strcmp (has_flag->name, "HasFlag") &&
11081                             has_flag->signature->hasthis &&
11082                             has_flag->signature->param_count == 1) {
11083                                 CHECK_TYPELOAD (enum_class);
11084
11085                                 if (enum_class == klass) {
11086                                         MonoInst *enum_this, *enum_flag;
11087
11088                                         ip += 5 + 6 + 5;
11089                                         --sp;
11090
11091                                         enum_this = sp [0];
11092                                         enum_flag = sp [1];
11093
11094                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11095                                         break;
11096                                 }
11097                         }
11098
11099                         // FIXME: LLVM can't handle the inconsistent bb linking
11100                         if (!mono_class_is_nullable (klass) &&
11101                                 !mini_is_gsharedvt_klass (klass) &&
11102                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11103                                 (ip [5] == CEE_BRTRUE ||
11104                                  ip [5] == CEE_BRTRUE_S ||
11105                                  ip [5] == CEE_BRFALSE ||
11106                                  ip [5] == CEE_BRFALSE_S)) {
11107                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11108                                 int dreg;
11109                                 MonoBasicBlock *true_bb, *false_bb;
11110
11111                                 ip += 5;
11112
11113                                 if (cfg->verbose_level > 3) {
11114                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11115                                         printf ("<box+brtrue opt>\n");
11116                                 }
11117
11118                                 switch (*ip) {
11119                                 case CEE_BRTRUE_S:
11120                                 case CEE_BRFALSE_S:
11121                                         CHECK_OPSIZE (2);
11122                                         ip++;
11123                                         target = ip + 1 + (signed char)(*ip);
11124                                         ip++;
11125                                         break;
11126                                 case CEE_BRTRUE:
11127                                 case CEE_BRFALSE:
11128                                         CHECK_OPSIZE (5);
11129                                         ip++;
11130                                         target = ip + 4 + (gint)(read32 (ip));
11131                                         ip += 4;
11132                                         break;
11133                                 default:
11134                                         g_assert_not_reached ();
11135                                 }
11136
11137                                 /*
11138                                  * We need to link both bblocks, since it is needed for handling stack
11139                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11140                                  * Branching to only one of them would lead to inconsistencies, so
11141                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11142                                  */
11143                                 GET_BBLOCK (cfg, true_bb, target);
11144                                 GET_BBLOCK (cfg, false_bb, ip);
11145
11146                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11147                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11148
11149                                 if (sp != stack_start) {
11150                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11151                                         sp = stack_start;
11152                                         CHECK_UNVERIFIABLE (cfg);
11153                                 }
11154
11155                                 if (COMPILE_LLVM (cfg)) {
11156                                         dreg = alloc_ireg (cfg);
11157                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11158                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11159
11160                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11161                                 } else {
11162                                         /* The JIT can't eliminate the iconst+compare */
11163                                         MONO_INST_NEW (cfg, ins, OP_BR);
11164                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11165                                         MONO_ADD_INS (cfg->cbb, ins);
11166                                 }
11167
11168                                 start_new_bblock = 1;
11169                                 break;
11170                         }
11171
11172                         *sp++ = handle_box (cfg, val, klass, context_used);
11173
11174                         CHECK_CFG_EXCEPTION;
11175                         ip += 5;
11176                         inline_costs += 1;
11177                         break;
11178                 }
11179                 case CEE_UNBOX: {
11180                         CHECK_STACK (1);
11181                         --sp;
11182                         CHECK_OPSIZE (5);
11183                         token = read32 (ip + 1);
11184                         klass = mini_get_class (method, token, generic_context);
11185                         CHECK_TYPELOAD (klass);
11186
11187                         mono_save_token_info (cfg, image, token, klass);
11188
11189                         context_used = mini_class_check_context_used (cfg, klass);
11190
11191                         if (mono_class_is_nullable (klass)) {
11192                                 MonoInst *val;
11193
11194                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11195                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11196
11197                                 *sp++= ins;
11198                         } else {
11199                                 ins = handle_unbox (cfg, klass, sp, context_used);
11200                                 *sp++ = ins;
11201                         }
11202                         ip += 5;
11203                         inline_costs += 2;
11204                         break;
11205                 }
11206                 case CEE_LDFLD:
11207                 case CEE_LDFLDA:
11208                 case CEE_STFLD:
11209                 case CEE_LDSFLD:
11210                 case CEE_LDSFLDA:
11211                 case CEE_STSFLD: {
11212                         MonoClassField *field;
11213 #ifndef DISABLE_REMOTING
11214                         int costs;
11215 #endif
11216                         guint foffset;
11217                         gboolean is_instance;
11218                         int op;
11219                         gpointer addr = NULL;
11220                         gboolean is_special_static;
11221                         MonoType *ftype;
11222                         MonoInst *store_val = NULL;
11223                         MonoInst *thread_ins;
11224
11225                         op = *ip;
11226                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11227                         if (is_instance) {
11228                                 if (op == CEE_STFLD) {
11229                                         CHECK_STACK (2);
11230                                         sp -= 2;
11231                                         store_val = sp [1];
11232                                 } else {
11233                                         CHECK_STACK (1);
11234                                         --sp;
11235                                 }
11236                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11237                                         UNVERIFIED;
11238                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11239                                         UNVERIFIED;
11240                         } else {
11241                                 if (op == CEE_STSFLD) {
11242                                         CHECK_STACK (1);
11243                                         sp--;
11244                                         store_val = sp [0];
11245                                 }
11246                         }
11247
11248                         CHECK_OPSIZE (5);
11249                         token = read32 (ip + 1);
11250                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11251                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11252                                 klass = field->parent;
11253                         }
11254                         else {
11255                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11256                                 CHECK_CFG_ERROR;
11257                         }
11258                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11259                                 FIELD_ACCESS_FAILURE (method, field);
11260                         mono_class_init (klass);
11261
11262                         /* if the class is Critical then transparent code cannot access it's fields */
11263                         if (!is_instance && mono_security_core_clr_enabled ())
11264                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11265
11266                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11267                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11268                         if (mono_security_core_clr_enabled ())
11269                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11270                         */
11271
11272                         ftype = mono_field_get_type (field);
11273
11274                         /*
11275                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11276                          * the static case.
11277                          */
11278                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11279                                 switch (op) {
11280                                 case CEE_LDFLD:
11281                                         op = CEE_LDSFLD;
11282                                         break;
11283                                 case CEE_STFLD:
11284                                         op = CEE_STSFLD;
11285                                         break;
11286                                 case CEE_LDFLDA:
11287                                         op = CEE_LDSFLDA;
11288                                         break;
11289                                 default:
11290                                         g_assert_not_reached ();
11291                                 }
11292                                 is_instance = FALSE;
11293                         }
11294
11295                         context_used = mini_class_check_context_used (cfg, klass);
11296
11297                         /* INSTANCE CASE */
11298
11299                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11300                         if (op == CEE_STFLD) {
11301                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11302                                         UNVERIFIED;
11303 #ifndef DISABLE_REMOTING
11304                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11305                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11306                                         MonoInst *iargs [5];
11307
11308                                         GSHAREDVT_FAILURE (op);
11309
11310                                         iargs [0] = sp [0];
11311                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11312                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11313                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11314                                                     field->offset);
11315                                         iargs [4] = sp [1];
11316
11317                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11318                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11319                                                                                            iargs, ip, cfg->real_offset, TRUE);
11320                                                 CHECK_CFG_EXCEPTION;
11321                                                 g_assert (costs > 0);
11322
11323                                                 cfg->real_offset += 5;
11324
11325                                                 inline_costs += costs;
11326                                         } else {
11327                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11328                                         }
11329                                 } else
11330 #endif
11331                                 {
11332                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11333
11334                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11335
11336                                         if (ins_flag & MONO_INST_VOLATILE) {
11337                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11338                                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11339                                         }
11340
11341                                         if (mini_is_gsharedvt_klass (klass)) {
11342                                                 MonoInst *offset_ins;
11343
11344                                                 context_used = mini_class_check_context_used (cfg, klass);
11345
11346                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11347                                                 /* The value is offset by 1 */
11348                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11349                                                 dreg = alloc_ireg_mp (cfg);
11350                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11351                                                 wbarrier_ptr_ins = ins;
11352                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11353                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11354                                         } else {
11355                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11356                                         }
11357                                         if (sp [0]->opcode != OP_LDADDR)
11358                                                 store->flags |= MONO_INST_FAULT;
11359
11360                                         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)) {
11361                                                 if (mini_is_gsharedvt_klass (klass)) {
11362                                                         g_assert (wbarrier_ptr_ins);
11363                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11364                                                 } else {
11365                                                         /* insert call to write barrier */
11366                                                         MonoInst *ptr;
11367                                                         int dreg;
11368
11369                                                         dreg = alloc_ireg_mp (cfg);
11370                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11371                                                         emit_write_barrier (cfg, ptr, sp [1]);
11372                                                 }
11373                                         }
11374
11375                                         store->flags |= ins_flag;
11376                                 }
11377                                 ins_flag = 0;
11378                                 ip += 5;
11379                                 break;
11380                         }
11381
11382 #ifndef DISABLE_REMOTING
11383                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11384                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11385                                 MonoInst *iargs [4];
11386
11387                                 GSHAREDVT_FAILURE (op);
11388
11389                                 iargs [0] = sp [0];
11390                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11391                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11392                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11393                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11394                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11395                                                                                    iargs, ip, cfg->real_offset, TRUE);
11396                                         CHECK_CFG_EXCEPTION;
11397                                         g_assert (costs > 0);
11398
11399                                         cfg->real_offset += 5;
11400
11401                                         *sp++ = iargs [0];
11402
11403                                         inline_costs += costs;
11404                                 } else {
11405                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11406                                         *sp++ = ins;
11407                                 }
11408                         } else
11409 #endif
11410                         if (is_instance) {
11411                                 if (sp [0]->type == STACK_VTYPE) {
11412                                         MonoInst *var;
11413
11414                                         /* Have to compute the address of the variable */
11415
11416                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11417                                         if (!var)
11418                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11419                                         else
11420                                                 g_assert (var->klass == klass);
11421
11422                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11423                                         sp [0] = ins;
11424                                 }
11425
11426                                 if (op == CEE_LDFLDA) {
11427                                         if (sp [0]->type == STACK_OBJ) {
11428                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11429                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11430                                         }
11431
11432                                         dreg = alloc_ireg_mp (cfg);
11433
11434                                         if (mini_is_gsharedvt_klass (klass)) {
11435                                                 MonoInst *offset_ins;
11436
11437                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11438                                                 /* The value is offset by 1 */
11439                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11440                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11441                                         } else {
11442                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11443                                         }
11444                                         ins->klass = mono_class_from_mono_type (field->type);
11445                                         ins->type = STACK_MP;
11446                                         *sp++ = ins;
11447                                 } else {
11448                                         MonoInst *load;
11449
11450                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11451
11452                                         if (mini_is_gsharedvt_klass (klass)) {
11453                                                 MonoInst *offset_ins;
11454
11455                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11456                                                 /* The value is offset by 1 */
11457                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11458                                                 dreg = alloc_ireg_mp (cfg);
11459                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11460                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11461                                         } else {
11462                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11463                                         }
11464                                         load->flags |= ins_flag;
11465                                         if (sp [0]->opcode != OP_LDADDR)
11466                                                 load->flags |= MONO_INST_FAULT;
11467                                         *sp++ = load;
11468                                 }
11469                         }
11470
11471                         if (is_instance) {
11472                                 ins_flag = 0;
11473                                 ip += 5;
11474                                 break;
11475                         }
11476
11477                         /* STATIC CASE */
11478                         context_used = mini_class_check_context_used (cfg, klass);
11479
11480                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11481                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11482                                 CHECK_CFG_ERROR;
11483                         }
11484
11485                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11486                          * to be called here.
11487                          */
11488                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11489                                 mono_class_vtable (cfg->domain, klass);
11490                                 CHECK_TYPELOAD (klass);
11491                         }
11492                         mono_domain_lock (cfg->domain);
11493                         if (cfg->domain->special_static_fields)
11494                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11495                         mono_domain_unlock (cfg->domain);
11496
11497                         is_special_static = mono_class_field_is_special_static (field);
11498
11499                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11500                                 thread_ins = mono_get_thread_intrinsic (cfg);
11501                         else
11502                                 thread_ins = NULL;
11503
11504                         /* Generate IR to compute the field address */
11505                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11506                                 /*
11507                                  * Fast access to TLS data
11508                                  * Inline version of get_thread_static_data () in
11509                                  * threads.c.
11510                                  */
11511                                 guint32 offset;
11512                                 int idx, static_data_reg, array_reg, dreg;
11513
11514                                 GSHAREDVT_FAILURE (op);
11515
11516                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11517                                 static_data_reg = alloc_ireg (cfg);
11518                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11519
11520                                 if (cfg->compile_aot) {
11521                                         int offset_reg, offset2_reg, idx_reg;
11522
11523                                         /* For TLS variables, this will return the TLS offset */
11524                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11525                                         offset_reg = ins->dreg;
11526                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11527                                         idx_reg = alloc_ireg (cfg);
11528                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11529                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11530                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11531                                         array_reg = alloc_ireg (cfg);
11532                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11533                                         offset2_reg = alloc_ireg (cfg);
11534                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11535                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11536                                         dreg = alloc_ireg (cfg);
11537                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11538                                 } else {
11539                                         offset = (gsize)addr & 0x7fffffff;
11540                                         idx = offset & 0x3f;
11541
11542                                         array_reg = alloc_ireg (cfg);
11543                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11544                                         dreg = alloc_ireg (cfg);
11545                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11546                                 }
11547                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11548                                         (cfg->compile_aot && is_special_static) ||
11549                                         (context_used && is_special_static)) {
11550                                 MonoInst *iargs [2];
11551
11552                                 g_assert (field->parent);
11553                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11554                                 if (context_used) {
11555                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11556                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11557                                 } else {
11558                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11559                                 }
11560                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11561                         } else if (context_used) {
11562                                 MonoInst *static_data;
11563
11564                                 /*
11565                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11566                                         method->klass->name_space, method->klass->name, method->name,
11567                                         depth, field->offset);
11568                                 */
11569
11570                                 if (mono_class_needs_cctor_run (klass, method))
11571                                         emit_class_init (cfg, klass);
11572
11573                                 /*
11574                                  * The pointer we're computing here is
11575                                  *
11576                                  *   super_info.static_data + field->offset
11577                                  */
11578                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11579                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11580
11581                                 if (mini_is_gsharedvt_klass (klass)) {
11582                                         MonoInst *offset_ins;
11583
11584                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11585                                         /* The value is offset by 1 */
11586                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11587                                         dreg = alloc_ireg_mp (cfg);
11588                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11589                                 } else if (field->offset == 0) {
11590                                         ins = static_data;
11591                                 } else {
11592                                         int addr_reg = mono_alloc_preg (cfg);
11593                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11594                                 }
11595                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11596                                 MonoInst *iargs [2];
11597
11598                                 g_assert (field->parent);
11599                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11600                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11601                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11602                         } else {
11603                                 MonoVTable *vtable = NULL;
11604
11605                                 if (!cfg->compile_aot)
11606                                         vtable = mono_class_vtable (cfg->domain, klass);
11607                                 CHECK_TYPELOAD (klass);
11608
11609                                 if (!addr) {
11610                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11611                                                 if (!(g_slist_find (class_inits, klass))) {
11612                                                         emit_class_init (cfg, klass);
11613                                                         if (cfg->verbose_level > 2)
11614                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11615                                                         class_inits = g_slist_prepend (class_inits, klass);
11616                                                 }
11617                                         } else {
11618                                                 if (cfg->run_cctors) {
11619                                                         /* This makes so that inline cannot trigger */
11620                                                         /* .cctors: too many apps depend on them */
11621                                                         /* running with a specific order... */
11622                                                         g_assert (vtable);
11623                                                         if (! vtable->initialized)
11624                                                                 INLINE_FAILURE ("class init");
11625                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11626                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11627                                                                 goto exception_exit;
11628                                                         }
11629                                                 }
11630                                         }
11631                                         if (cfg->compile_aot)
11632                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11633                                         else {
11634                                                 g_assert (vtable);
11635                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11636                                                 g_assert (addr);
11637                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11638                                         }
11639                                 } else {
11640                                         MonoInst *iargs [1];
11641                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11642                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11643                                 }
11644                         }
11645
11646                         /* Generate IR to do the actual load/store operation */
11647
11648                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11649                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11650                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11651                         }
11652
11653                         if (op == CEE_LDSFLDA) {
11654                                 ins->klass = mono_class_from_mono_type (ftype);
11655                                 ins->type = STACK_PTR;
11656                                 *sp++ = ins;
11657                         } else if (op == CEE_STSFLD) {
11658                                 MonoInst *store;
11659
11660                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11661                                 store->flags |= ins_flag;
11662                         } else {
11663                                 gboolean is_const = FALSE;
11664                                 MonoVTable *vtable = NULL;
11665                                 gpointer addr = NULL;
11666
11667                                 if (!context_used) {
11668                                         vtable = mono_class_vtable (cfg->domain, klass);
11669                                         CHECK_TYPELOAD (klass);
11670                                 }
11671                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11672                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11673                                         int ro_type = ftype->type;
11674                                         if (!addr)
11675                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11676                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11677                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11678                                         }
11679
11680                                         GSHAREDVT_FAILURE (op);
11681
11682                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11683                                         is_const = TRUE;
11684                                         switch (ro_type) {
11685                                         case MONO_TYPE_BOOLEAN:
11686                                         case MONO_TYPE_U1:
11687                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11688                                                 sp++;
11689                                                 break;
11690                                         case MONO_TYPE_I1:
11691                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11692                                                 sp++;
11693                                                 break;
11694                                         case MONO_TYPE_CHAR:
11695                                         case MONO_TYPE_U2:
11696                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11697                                                 sp++;
11698                                                 break;
11699                                         case MONO_TYPE_I2:
11700                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11701                                                 sp++;
11702                                                 break;
11703                                                 break;
11704                                         case MONO_TYPE_I4:
11705                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11706                                                 sp++;
11707                                                 break;
11708                                         case MONO_TYPE_U4:
11709                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11710                                                 sp++;
11711                                                 break;
11712                                         case MONO_TYPE_I:
11713                                         case MONO_TYPE_U:
11714                                         case MONO_TYPE_PTR:
11715                                         case MONO_TYPE_FNPTR:
11716                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11717                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11718                                                 sp++;
11719                                                 break;
11720                                         case MONO_TYPE_STRING:
11721                                         case MONO_TYPE_OBJECT:
11722                                         case MONO_TYPE_CLASS:
11723                                         case MONO_TYPE_SZARRAY:
11724                                         case MONO_TYPE_ARRAY:
11725                                                 if (!mono_gc_is_moving ()) {
11726                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11727                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11728                                                         sp++;
11729                                                 } else {
11730                                                         is_const = FALSE;
11731                                                 }
11732                                                 break;
11733                                         case MONO_TYPE_I8:
11734                                         case MONO_TYPE_U8:
11735                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_R4:
11739                                         case MONO_TYPE_R8:
11740                                         case MONO_TYPE_VALUETYPE:
11741                                         default:
11742                                                 is_const = FALSE;
11743                                                 break;
11744                                         }
11745                                 }
11746
11747                                 if (!is_const) {
11748                                         MonoInst *load;
11749
11750                                         CHECK_STACK_OVF (1);
11751
11752                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11753                                         load->flags |= ins_flag;
11754                                         ins_flag = 0;
11755                                         *sp++ = load;
11756                                 }
11757                         }
11758
11759                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11760                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11761                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11762                         }
11763
11764                         ins_flag = 0;
11765                         ip += 5;
11766                         break;
11767                 }
11768                 case CEE_STOBJ:
11769                         CHECK_STACK (2);
11770                         sp -= 2;
11771                         CHECK_OPSIZE (5);
11772                         token = read32 (ip + 1);
11773                         klass = mini_get_class (method, token, generic_context);
11774                         CHECK_TYPELOAD (klass);
11775                         if (ins_flag & MONO_INST_VOLATILE) {
11776                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11777                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11778                         }
11779                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11780                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11781                         ins->flags |= ins_flag;
11782                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11783                                         generic_class_is_reference_type (cfg, klass)) {
11784                                 /* insert call to write barrier */
11785                                 emit_write_barrier (cfg, sp [0], sp [1]);
11786                         }
11787                         ins_flag = 0;
11788                         ip += 5;
11789                         inline_costs += 1;
11790                         break;
11791
11792                         /*
11793                          * Array opcodes
11794                          */
11795                 case CEE_NEWARR: {
11796                         MonoInst *len_ins;
11797                         const char *data_ptr;
11798                         int data_size = 0;
11799                         guint32 field_token;
11800
11801                         CHECK_STACK (1);
11802                         --sp;
11803
11804                         CHECK_OPSIZE (5);
11805                         token = read32 (ip + 1);
11806
11807                         klass = mini_get_class (method, token, generic_context);
11808                         CHECK_TYPELOAD (klass);
11809
11810                         context_used = mini_class_check_context_used (cfg, klass);
11811
11812                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11813                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11814                                 ins->sreg1 = sp [0]->dreg;
11815                                 ins->type = STACK_I4;
11816                                 ins->dreg = alloc_ireg (cfg);
11817                                 MONO_ADD_INS (cfg->cbb, ins);
11818                                 *sp = mono_decompose_opcode (cfg, ins);
11819                         }
11820
11821                         if (context_used) {
11822                                 MonoInst *args [3];
11823                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11824                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11825
11826                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11827
11828                                 /* vtable */
11829                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11830                                         array_class, MONO_RGCTX_INFO_VTABLE);
11831                                 /* array len */
11832                                 args [1] = sp [0];
11833
11834                                 if (managed_alloc)
11835                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11836                                 else
11837                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11838                         } else {
11839                                 if (cfg->opt & MONO_OPT_SHARED) {
11840                                         /* Decompose now to avoid problems with references to the domainvar */
11841                                         MonoInst *iargs [3];
11842
11843                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11844                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11845                                         iargs [2] = sp [0];
11846
11847                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11848                                 } else {
11849                                         /* Decompose later since it is needed by abcrem */
11850                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11851                                         mono_class_vtable (cfg->domain, array_type);
11852                                         CHECK_TYPELOAD (array_type);
11853
11854                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11855                                         ins->dreg = alloc_ireg_ref (cfg);
11856                                         ins->sreg1 = sp [0]->dreg;
11857                                         ins->inst_newa_class = klass;
11858                                         ins->type = STACK_OBJ;
11859                                         ins->klass = array_type;
11860                                         MONO_ADD_INS (cfg->cbb, ins);
11861                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11862                                         cfg->cbb->has_array_access = TRUE;
11863
11864                                         /* Needed so mono_emit_load_get_addr () gets called */
11865                                         mono_get_got_var (cfg);
11866                                 }
11867                         }
11868
11869                         len_ins = sp [0];
11870                         ip += 5;
11871                         *sp++ = ins;
11872                         inline_costs += 1;
11873
11874                         /*
11875                          * we inline/optimize the initialization sequence if possible.
11876                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11877                          * for small sizes open code the memcpy
11878                          * ensure the rva field is big enough
11879                          */
11880                         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))) {
11881                                 MonoMethod *memcpy_method = get_memcpy_method ();
11882                                 MonoInst *iargs [3];
11883                                 int add_reg = alloc_ireg_mp (cfg);
11884
11885                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11886                                 if (cfg->compile_aot) {
11887                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11888                                 } else {
11889                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11890                                 }
11891                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11892                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11893                                 ip += 11;
11894                         }
11895
11896                         break;
11897                 }
11898                 case CEE_LDLEN:
11899                         CHECK_STACK (1);
11900                         --sp;
11901                         if (sp [0]->type != STACK_OBJ)
11902                                 UNVERIFIED;
11903
11904                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11905                         ins->dreg = alloc_preg (cfg);
11906                         ins->sreg1 = sp [0]->dreg;
11907                         ins->type = STACK_I4;
11908                         /* This flag will be inherited by the decomposition */
11909                         ins->flags |= MONO_INST_FAULT;
11910                         MONO_ADD_INS (cfg->cbb, ins);
11911                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11912                         cfg->cbb->has_array_access = TRUE;
11913                         ip ++;
11914                         *sp++ = ins;
11915                         break;
11916                 case CEE_LDELEMA:
11917                         CHECK_STACK (2);
11918                         sp -= 2;
11919                         CHECK_OPSIZE (5);
11920                         if (sp [0]->type != STACK_OBJ)
11921                                 UNVERIFIED;
11922
11923                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11924
11925                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11926                         CHECK_TYPELOAD (klass);
11927                         /* we need to make sure that this array is exactly the type it needs
11928                          * to be for correctness. the wrappers are lax with their usage
11929                          * so we need to ignore them here
11930                          */
11931                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11932                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11933                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11934                                 CHECK_TYPELOAD (array_class);
11935                         }
11936
11937                         readonly = FALSE;
11938                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11939                         *sp++ = ins;
11940                         ip += 5;
11941                         break;
11942                 case CEE_LDELEM:
11943                 case CEE_LDELEM_I1:
11944                 case CEE_LDELEM_U1:
11945                 case CEE_LDELEM_I2:
11946                 case CEE_LDELEM_U2:
11947                 case CEE_LDELEM_I4:
11948                 case CEE_LDELEM_U4:
11949                 case CEE_LDELEM_I8:
11950                 case CEE_LDELEM_I:
11951                 case CEE_LDELEM_R4:
11952                 case CEE_LDELEM_R8:
11953                 case CEE_LDELEM_REF: {
11954                         MonoInst *addr;
11955
11956                         CHECK_STACK (2);
11957                         sp -= 2;
11958
11959                         if (*ip == CEE_LDELEM) {
11960                                 CHECK_OPSIZE (5);
11961                                 token = read32 (ip + 1);
11962                                 klass = mini_get_class (method, token, generic_context);
11963                                 CHECK_TYPELOAD (klass);
11964                                 mono_class_init (klass);
11965                         }
11966                         else
11967                                 klass = array_access_to_klass (*ip);
11968
11969                         if (sp [0]->type != STACK_OBJ)
11970                                 UNVERIFIED;
11971
11972                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11973
11974                         if (mini_is_gsharedvt_variable_klass (klass)) {
11975                                 // FIXME-VT: OP_ICONST optimization
11976                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11977                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11978                                 ins->opcode = OP_LOADV_MEMBASE;
11979                         } else if (sp [1]->opcode == OP_ICONST) {
11980                                 int array_reg = sp [0]->dreg;
11981                                 int index_reg = sp [1]->dreg;
11982                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11983
11984                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11985                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11986
11987                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11988                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11989                         } else {
11990                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11991                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11992                         }
11993                         *sp++ = ins;
11994                         if (*ip == CEE_LDELEM)
11995                                 ip += 5;
11996                         else
11997                                 ++ip;
11998                         break;
11999                 }
12000                 case CEE_STELEM_I:
12001                 case CEE_STELEM_I1:
12002                 case CEE_STELEM_I2:
12003                 case CEE_STELEM_I4:
12004                 case CEE_STELEM_I8:
12005                 case CEE_STELEM_R4:
12006                 case CEE_STELEM_R8:
12007                 case CEE_STELEM_REF:
12008                 case CEE_STELEM: {
12009                         CHECK_STACK (3);
12010                         sp -= 3;
12011
12012                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12013
12014                         if (*ip == CEE_STELEM) {
12015                                 CHECK_OPSIZE (5);
12016                                 token = read32 (ip + 1);
12017                                 klass = mini_get_class (method, token, generic_context);
12018                                 CHECK_TYPELOAD (klass);
12019                                 mono_class_init (klass);
12020                         }
12021                         else
12022                                 klass = array_access_to_klass (*ip);
12023
12024                         if (sp [0]->type != STACK_OBJ)
12025                                 UNVERIFIED;
12026
12027                         emit_array_store (cfg, klass, sp, TRUE);
12028
12029                         if (*ip == CEE_STELEM)
12030                                 ip += 5;
12031                         else
12032                                 ++ip;
12033                         inline_costs += 1;
12034                         break;
12035                 }
12036                 case CEE_CKFINITE: {
12037                         CHECK_STACK (1);
12038                         --sp;
12039
12040                         if (cfg->llvm_only) {
12041                                 MonoInst *iargs [1];
12042
12043                                 iargs [0] = sp [0];
12044                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12045                         } else  {
12046                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12047                                 ins->sreg1 = sp [0]->dreg;
12048                                 ins->dreg = alloc_freg (cfg);
12049                                 ins->type = STACK_R8;
12050                                 MONO_ADD_INS (cfg->cbb, ins);
12051
12052                                 *sp++ = mono_decompose_opcode (cfg, ins);
12053                         }
12054
12055                         ++ip;
12056                         break;
12057                 }
12058                 case CEE_REFANYVAL: {
12059                         MonoInst *src_var, *src;
12060
12061                         int klass_reg = alloc_preg (cfg);
12062                         int dreg = alloc_preg (cfg);
12063
12064                         GSHAREDVT_FAILURE (*ip);
12065
12066                         CHECK_STACK (1);
12067                         MONO_INST_NEW (cfg, ins, *ip);
12068                         --sp;
12069                         CHECK_OPSIZE (5);
12070                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12071                         CHECK_TYPELOAD (klass);
12072
12073                         context_used = mini_class_check_context_used (cfg, klass);
12074
12075                         // FIXME:
12076                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12077                         if (!src_var)
12078                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12079                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12080                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12081
12082                         if (context_used) {
12083                                 MonoInst *klass_ins;
12084
12085                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12086                                                 klass, MONO_RGCTX_INFO_KLASS);
12087
12088                                 // FIXME:
12089                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12090                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12091                         } else {
12092                                 mini_emit_class_check (cfg, klass_reg, klass);
12093                         }
12094                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12095                         ins->type = STACK_MP;
12096                         ins->klass = klass;
12097                         *sp++ = ins;
12098                         ip += 5;
12099                         break;
12100                 }
12101                 case CEE_MKREFANY: {
12102                         MonoInst *loc, *addr;
12103
12104                         GSHAREDVT_FAILURE (*ip);
12105
12106                         CHECK_STACK (1);
12107                         MONO_INST_NEW (cfg, ins, *ip);
12108                         --sp;
12109                         CHECK_OPSIZE (5);
12110                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12111                         CHECK_TYPELOAD (klass);
12112
12113                         context_used = mini_class_check_context_used (cfg, klass);
12114
12115                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12116                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12117
12118                         if (context_used) {
12119                                 MonoInst *const_ins;
12120                                 int type_reg = alloc_preg (cfg);
12121
12122                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12123                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12124                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12125                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12126                         } else if (cfg->compile_aot) {
12127                                 int const_reg = alloc_preg (cfg);
12128                                 int type_reg = alloc_preg (cfg);
12129
12130                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12131                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12132                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12133                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12134                         } else {
12135                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12136                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12137                         }
12138                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12139
12140                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12141                         ins->type = STACK_VTYPE;
12142                         ins->klass = mono_defaults.typed_reference_class;
12143                         *sp++ = ins;
12144                         ip += 5;
12145                         break;
12146                 }
12147                 case CEE_LDTOKEN: {
12148                         gpointer handle;
12149                         MonoClass *handle_class;
12150
12151                         CHECK_STACK_OVF (1);
12152
12153                         CHECK_OPSIZE (5);
12154                         n = read32 (ip + 1);
12155
12156                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12157                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12158                                 handle = mono_method_get_wrapper_data (method, n);
12159                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12160                                 if (handle_class == mono_defaults.typehandle_class)
12161                                         handle = &((MonoClass*)handle)->byval_arg;
12162                         }
12163                         else {
12164                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12165                                 CHECK_CFG_ERROR;
12166                         }
12167                         if (!handle)
12168                                 LOAD_ERROR;
12169                         mono_class_init (handle_class);
12170                         if (cfg->gshared) {
12171                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12172                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12173                                         /* This case handles ldtoken
12174                                            of an open type, like for
12175                                            typeof(Gen<>). */
12176                                         context_used = 0;
12177                                 } else if (handle_class == mono_defaults.typehandle_class) {
12178                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12179                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12180                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12181                                 else if (handle_class == mono_defaults.methodhandle_class)
12182                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12183                                 else
12184                                         g_assert_not_reached ();
12185                         }
12186
12187                         if ((cfg->opt & MONO_OPT_SHARED) &&
12188                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12189                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12190                                 MonoInst *addr, *vtvar, *iargs [3];
12191                                 int method_context_used;
12192
12193                                 method_context_used = mini_method_check_context_used (cfg, method);
12194
12195                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12196
12197                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12198                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12199                                 if (method_context_used) {
12200                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12201                                                 method, MONO_RGCTX_INFO_METHOD);
12202                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12203                                 } else {
12204                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12205                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12206                                 }
12207                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12208
12209                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12210
12211                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12212                         } else {
12213                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12214                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12215                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12216                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12217                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12218                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12219
12220                                         mono_class_init (tclass);
12221                                         if (context_used) {
12222                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12223                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12224                                         } else if (cfg->compile_aot) {
12225                                                 if (method->wrapper_type) {
12226                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12227                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12228                                                                 /* Special case for static synchronized wrappers */
12229                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12230                                                         } else {
12231                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12232                                                                 /* FIXME: n is not a normal token */
12233                                                                 DISABLE_AOT (cfg);
12234                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12235                                                         }
12236                                                 } else {
12237                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12238                                                 }
12239                                         } else {
12240                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12241                                                 CHECK_CFG_ERROR;
12242                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12243                                         }
12244                                         ins->type = STACK_OBJ;
12245                                         ins->klass = cmethod->klass;
12246                                         ip += 5;
12247                                 } else {
12248                                         MonoInst *addr, *vtvar;
12249
12250                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12251
12252                                         if (context_used) {
12253                                                 if (handle_class == mono_defaults.typehandle_class) {
12254                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12255                                                                         mono_class_from_mono_type ((MonoType *)handle),
12256                                                                         MONO_RGCTX_INFO_TYPE);
12257                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12258                                                         ins = emit_get_rgctx_method (cfg, context_used,
12259                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12260                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12261                                                         ins = emit_get_rgctx_field (cfg, context_used,
12262                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12263                                                 } else {
12264                                                         g_assert_not_reached ();
12265                                                 }
12266                                         } else if (cfg->compile_aot) {
12267                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12268                                         } else {
12269                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12270                                         }
12271                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12272                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12273                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12274                                 }
12275                         }
12276
12277                         *sp++ = ins;
12278                         ip += 5;
12279                         break;
12280                 }
12281                 case CEE_THROW:
12282                         CHECK_STACK (1);
12283                         MONO_INST_NEW (cfg, ins, OP_THROW);
12284                         --sp;
12285                         ins->sreg1 = sp [0]->dreg;
12286                         ip++;
12287                         cfg->cbb->out_of_line = TRUE;
12288                         MONO_ADD_INS (cfg->cbb, ins);
12289                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12290                         MONO_ADD_INS (cfg->cbb, ins);
12291                         sp = stack_start;
12292
12293                         link_bblock (cfg, cfg->cbb, end_bblock);
12294                         start_new_bblock = 1;
12295                         /* This can complicate code generation for llvm since the return value might not be defined */
12296                         if (COMPILE_LLVM (cfg))
12297                                 INLINE_FAILURE ("throw");
12298                         break;
12299                 case CEE_ENDFINALLY:
12300                         if (!ip_in_finally_clause (cfg, ip - header->code))
12301                                 UNVERIFIED;
12302                         /* mono_save_seq_point_info () depends on this */
12303                         if (sp != stack_start)
12304                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12305                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12306                         MONO_ADD_INS (cfg->cbb, ins);
12307                         ip++;
12308                         start_new_bblock = 1;
12309
12310                         /*
12311                          * Control will leave the method so empty the stack, otherwise
12312                          * the next basic block will start with a nonempty stack.
12313                          */
12314                         while (sp != stack_start) {
12315                                 sp--;
12316                         }
12317                         break;
12318                 case CEE_LEAVE:
12319                 case CEE_LEAVE_S: {
12320                         GList *handlers;
12321
12322                         if (*ip == CEE_LEAVE) {
12323                                 CHECK_OPSIZE (5);
12324                                 target = ip + 5 + (gint32)read32(ip + 1);
12325                         } else {
12326                                 CHECK_OPSIZE (2);
12327                                 target = ip + 2 + (signed char)(ip [1]);
12328                         }
12329
12330                         /* empty the stack */
12331                         while (sp != stack_start) {
12332                                 sp--;
12333                         }
12334
12335                         /*
12336                          * If this leave statement is in a catch block, check for a
12337                          * pending exception, and rethrow it if necessary.
12338                          * We avoid doing this in runtime invoke wrappers, since those are called
12339                          * by native code which excepts the wrapper to catch all exceptions.
12340                          */
12341                         for (i = 0; i < header->num_clauses; ++i) {
12342                                 MonoExceptionClause *clause = &header->clauses [i];
12343
12344                                 /*
12345                                  * Use <= in the final comparison to handle clauses with multiple
12346                                  * leave statements, like in bug #78024.
12347                                  * The ordering of the exception clauses guarantees that we find the
12348                                  * innermost clause.
12349                                  */
12350                                 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) {
12351                                         MonoInst *exc_ins;
12352                                         MonoBasicBlock *dont_throw;
12353
12354                                         /*
12355                                           MonoInst *load;
12356
12357                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12358                                         */
12359
12360                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12361
12362                                         NEW_BBLOCK (cfg, dont_throw);
12363
12364                                         /*
12365                                          * Currently, we always rethrow the abort exception, despite the
12366                                          * fact that this is not correct. See thread6.cs for an example.
12367                                          * But propagating the abort exception is more important than
12368                                          * getting the sematics right.
12369                                          */
12370                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12371                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12372                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12373
12374                                         MONO_START_BB (cfg, dont_throw);
12375                                 }
12376                         }
12377
12378 #ifdef ENABLE_LLVM
12379                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12380 #endif
12381
12382                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12383                                 GList *tmp;
12384                                 MonoExceptionClause *clause;
12385
12386                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12387                                         clause = (MonoExceptionClause *)tmp->data;
12388                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12389                                         g_assert (tblock);
12390                                         link_bblock (cfg, cfg->cbb, tblock);
12391                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12392                                         ins->inst_target_bb = tblock;
12393                                         ins->inst_eh_block = clause;
12394                                         MONO_ADD_INS (cfg->cbb, ins);
12395                                         cfg->cbb->has_call_handler = 1;
12396                                         if (COMPILE_LLVM (cfg)) {
12397                                                 MonoBasicBlock *target_bb;
12398
12399                                                 /*
12400                                                  * Link the finally bblock with the target, since it will
12401                                                  * conceptually branch there.
12402                                                  */
12403                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12404                                                 GET_BBLOCK (cfg, target_bb, target);
12405                                                 link_bblock (cfg, tblock, target_bb);
12406                                         }
12407                                 }
12408                                 g_list_free (handlers);
12409                         }
12410
12411                         MONO_INST_NEW (cfg, ins, OP_BR);
12412                         MONO_ADD_INS (cfg->cbb, ins);
12413                         GET_BBLOCK (cfg, tblock, target);
12414                         link_bblock (cfg, cfg->cbb, tblock);
12415                         ins->inst_target_bb = tblock;
12416
12417                         start_new_bblock = 1;
12418
12419                         if (*ip == CEE_LEAVE)
12420                                 ip += 5;
12421                         else
12422                                 ip += 2;
12423
12424                         break;
12425                 }
12426
12427                         /*
12428                          * Mono specific opcodes
12429                          */
12430                 case MONO_CUSTOM_PREFIX: {
12431
12432                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12433
12434                         CHECK_OPSIZE (2);
12435                         switch (ip [1]) {
12436                         case CEE_MONO_ICALL: {
12437                                 gpointer func;
12438                                 MonoJitICallInfo *info;
12439
12440                                 token = read32 (ip + 2);
12441                                 func = mono_method_get_wrapper_data (method, token);
12442                                 info = mono_find_jit_icall_by_addr (func);
12443                                 if (!info)
12444                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12445                                 g_assert (info);
12446
12447                                 CHECK_STACK (info->sig->param_count);
12448                                 sp -= info->sig->param_count;
12449
12450                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12451                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12452                                         *sp++ = ins;
12453
12454                                 ip += 6;
12455                                 inline_costs += 10 * num_calls++;
12456
12457                                 break;
12458                         }
12459                         case CEE_MONO_LDPTR_CARD_TABLE:
12460                         case CEE_MONO_LDPTR_NURSERY_START:
12461                         case CEE_MONO_LDPTR_NURSERY_BITS:
12462                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12463                                 CHECK_STACK_OVF (1);
12464
12465                                 switch (ip [1]) {
12466                                         case CEE_MONO_LDPTR_CARD_TABLE:
12467                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12468                                                 break;
12469                                         case CEE_MONO_LDPTR_NURSERY_START:
12470                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12471                                                 break;
12472                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12473                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12474                                                 break;
12475                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12476                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12477                                                 break;
12478                                 }
12479
12480                                 *sp++ = ins;
12481                                 ip += 2;
12482                                 inline_costs += 10 * num_calls++;
12483                                 break;
12484                         }
12485                         case CEE_MONO_LDPTR: {
12486                                 gpointer ptr;
12487
12488                                 CHECK_STACK_OVF (1);
12489                                 CHECK_OPSIZE (6);
12490                                 token = read32 (ip + 2);
12491
12492                                 ptr = mono_method_get_wrapper_data (method, token);
12493                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12494                                 *sp++ = ins;
12495                                 ip += 6;
12496                                 inline_costs += 10 * num_calls++;
12497                                 /* Can't embed random pointers into AOT code */
12498                                 DISABLE_AOT (cfg);
12499                                 break;
12500                         }
12501                         case CEE_MONO_JIT_ICALL_ADDR: {
12502                                 MonoJitICallInfo *callinfo;
12503                                 gpointer ptr;
12504
12505                                 CHECK_STACK_OVF (1);
12506                                 CHECK_OPSIZE (6);
12507                                 token = read32 (ip + 2);
12508
12509                                 ptr = mono_method_get_wrapper_data (method, token);
12510                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12511                                 g_assert (callinfo);
12512                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12513                                 *sp++ = ins;
12514                                 ip += 6;
12515                                 inline_costs += 10 * num_calls++;
12516                                 break;
12517                         }
12518                         case CEE_MONO_ICALL_ADDR: {
12519                                 MonoMethod *cmethod;
12520                                 gpointer ptr;
12521
12522                                 CHECK_STACK_OVF (1);
12523                                 CHECK_OPSIZE (6);
12524                                 token = read32 (ip + 2);
12525
12526                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12527
12528                                 if (cfg->compile_aot) {
12529                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12530                                 } else {
12531                                         ptr = mono_lookup_internal_call (cmethod);
12532                                         g_assert (ptr);
12533                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12534                                 }
12535                                 *sp++ = ins;
12536                                 ip += 6;
12537                                 break;
12538                         }
12539                         case CEE_MONO_VTADDR: {
12540                                 MonoInst *src_var, *src;
12541
12542                                 CHECK_STACK (1);
12543                                 --sp;
12544
12545                                 // FIXME:
12546                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12547                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12548                                 *sp++ = src;
12549                                 ip += 2;
12550                                 break;
12551                         }
12552                         case CEE_MONO_NEWOBJ: {
12553                                 MonoInst *iargs [2];
12554
12555                                 CHECK_STACK_OVF (1);
12556                                 CHECK_OPSIZE (6);
12557                                 token = read32 (ip + 2);
12558                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12559                                 mono_class_init (klass);
12560                                 NEW_DOMAINCONST (cfg, iargs [0]);
12561                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12562                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12563                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12564                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12565                                 ip += 6;
12566                                 inline_costs += 10 * num_calls++;
12567                                 break;
12568                         }
12569                         case CEE_MONO_OBJADDR:
12570                                 CHECK_STACK (1);
12571                                 --sp;
12572                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12573                                 ins->dreg = alloc_ireg_mp (cfg);
12574                                 ins->sreg1 = sp [0]->dreg;
12575                                 ins->type = STACK_MP;
12576                                 MONO_ADD_INS (cfg->cbb, ins);
12577                                 *sp++ = ins;
12578                                 ip += 2;
12579                                 break;
12580                         case CEE_MONO_LDNATIVEOBJ:
12581                                 /*
12582                                  * Similar to LDOBJ, but instead load the unmanaged
12583                                  * representation of the vtype to the stack.
12584                                  */
12585                                 CHECK_STACK (1);
12586                                 CHECK_OPSIZE (6);
12587                                 --sp;
12588                                 token = read32 (ip + 2);
12589                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12590                                 g_assert (klass->valuetype);
12591                                 mono_class_init (klass);
12592
12593                                 {
12594                                         MonoInst *src, *dest, *temp;
12595
12596                                         src = sp [0];
12597                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12598                                         temp->backend.is_pinvoke = 1;
12599                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12600                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12601
12602                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12603                                         dest->type = STACK_VTYPE;
12604                                         dest->klass = klass;
12605
12606                                         *sp ++ = dest;
12607                                         ip += 6;
12608                                 }
12609                                 break;
12610                         case CEE_MONO_RETOBJ: {
12611                                 /*
12612                                  * Same as RET, but return the native representation of a vtype
12613                                  * to the caller.
12614                                  */
12615                                 g_assert (cfg->ret);
12616                                 g_assert (mono_method_signature (method)->pinvoke);
12617                                 CHECK_STACK (1);
12618                                 --sp;
12619
12620                                 CHECK_OPSIZE (6);
12621                                 token = read32 (ip + 2);
12622                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12623
12624                                 if (!cfg->vret_addr) {
12625                                         g_assert (cfg->ret_var_is_local);
12626
12627                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12628                                 } else {
12629                                         EMIT_NEW_RETLOADA (cfg, ins);
12630                                 }
12631                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12632
12633                                 if (sp != stack_start)
12634                                         UNVERIFIED;
12635
12636                                 MONO_INST_NEW (cfg, ins, OP_BR);
12637                                 ins->inst_target_bb = end_bblock;
12638                                 MONO_ADD_INS (cfg->cbb, ins);
12639                                 link_bblock (cfg, cfg->cbb, end_bblock);
12640                                 start_new_bblock = 1;
12641                                 ip += 6;
12642                                 break;
12643                         }
12644                         case CEE_MONO_CISINST:
12645                         case CEE_MONO_CCASTCLASS: {
12646                                 int token;
12647                                 CHECK_STACK (1);
12648                                 --sp;
12649                                 CHECK_OPSIZE (6);
12650                                 token = read32 (ip + 2);
12651                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12652                                 if (ip [1] == CEE_MONO_CISINST)
12653                                         ins = handle_cisinst (cfg, klass, sp [0]);
12654                                 else
12655                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12656                                 *sp++ = ins;
12657                                 ip += 6;
12658                                 break;
12659                         }
12660                         case CEE_MONO_SAVE_LMF:
12661                         case CEE_MONO_RESTORE_LMF:
12662                                 ip += 2;
12663                                 break;
12664                         case CEE_MONO_CLASSCONST:
12665                                 CHECK_STACK_OVF (1);
12666                                 CHECK_OPSIZE (6);
12667                                 token = read32 (ip + 2);
12668                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12669                                 *sp++ = ins;
12670                                 ip += 6;
12671                                 inline_costs += 10 * num_calls++;
12672                                 break;
12673                         case CEE_MONO_NOT_TAKEN:
12674                                 cfg->cbb->out_of_line = TRUE;
12675                                 ip += 2;
12676                                 break;
12677                         case CEE_MONO_TLS: {
12678                                 MonoTlsKey key;
12679
12680                                 CHECK_STACK_OVF (1);
12681                                 CHECK_OPSIZE (6);
12682                                 key = (MonoTlsKey)read32 (ip + 2);
12683                                 g_assert (key < TLS_KEY_NUM);
12684
12685                                 ins = mono_create_tls_get (cfg, key);
12686                                 if (!ins) {
12687                                         if (cfg->compile_aot) {
12688                                                 DISABLE_AOT (cfg);
12689                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12690                                                 ins->dreg = alloc_preg (cfg);
12691                                                 ins->type = STACK_PTR;
12692                                         } else {
12693                                                 g_assert_not_reached ();
12694                                         }
12695                                 }
12696                                 ins->type = STACK_PTR;
12697                                 MONO_ADD_INS (cfg->cbb, ins);
12698                                 *sp++ = ins;
12699                                 ip += 6;
12700                                 break;
12701                         }
12702                         case CEE_MONO_DYN_CALL: {
12703                                 MonoCallInst *call;
12704
12705                                 /* It would be easier to call a trampoline, but that would put an
12706                                  * extra frame on the stack, confusing exception handling. So
12707                                  * implement it inline using an opcode for now.
12708                                  */
12709
12710                                 if (!cfg->dyn_call_var) {
12711                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12712                                         /* prevent it from being register allocated */
12713                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12714                                 }
12715
12716                                 /* Has to use a call inst since it local regalloc expects it */
12717                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12718                                 ins = (MonoInst*)call;
12719                                 sp -= 2;
12720                                 ins->sreg1 = sp [0]->dreg;
12721                                 ins->sreg2 = sp [1]->dreg;
12722                                 MONO_ADD_INS (cfg->cbb, ins);
12723
12724                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12725
12726                                 ip += 2;
12727                                 inline_costs += 10 * num_calls++;
12728
12729                                 break;
12730                         }
12731                         case CEE_MONO_MEMORY_BARRIER: {
12732                                 CHECK_OPSIZE (6);
12733                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12734                                 ip += 6;
12735                                 break;
12736                         }
12737                         case CEE_MONO_ATOMIC_STORE_I4: {
12738                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12739
12740                                 CHECK_OPSIZE (6);
12741                                 CHECK_STACK (2);
12742                                 sp -= 2;
12743
12744                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12745                                 ins->dreg = sp [0]->dreg;
12746                                 ins->sreg1 = sp [1]->dreg;
12747                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12748                                 MONO_ADD_INS (cfg->cbb, ins);
12749
12750                                 ip += 6;
12751                                 break;
12752                         }
12753                         case CEE_MONO_JIT_ATTACH: {
12754                                 MonoInst *args [16], *domain_ins;
12755                                 MonoInst *ad_ins, *jit_tls_ins;
12756                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12757
12758                                 g_assert (!mono_threads_is_coop_enabled ());
12759
12760                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12761
12762                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12763                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12764
12765                                 ad_ins = mono_get_domain_intrinsic (cfg);
12766                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12767
12768                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12769                                         NEW_BBLOCK (cfg, next_bb);
12770                                         NEW_BBLOCK (cfg, call_bb);
12771
12772                                         if (cfg->compile_aot) {
12773                                                 /* AOT code is only used in the root domain */
12774                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12775                                         } else {
12776                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12777                                         }
12778                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12779                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12780                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12781
12782                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12783                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12784                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12785
12786                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12787                                         MONO_START_BB (cfg, call_bb);
12788                                 }
12789
12790                                 /* AOT code is only used in the root domain */
12791                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12792                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12793                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12794
12795                                 if (next_bb)
12796                                         MONO_START_BB (cfg, next_bb);
12797
12798
12799                                 ip += 2;
12800                                 break;
12801                         }
12802                         case CEE_MONO_JIT_DETACH: {
12803                                 MonoInst *args [16];
12804
12805                                 /* Restore the original domain */
12806                                 dreg = alloc_ireg (cfg);
12807                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12808                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12809                                 ip += 2;
12810                                 break;
12811                         }
12812                         case CEE_MONO_CALLI_EXTRA_ARG: {
12813                                 MonoInst *addr;
12814                                 MonoMethodSignature *fsig;
12815                                 MonoInst *arg;
12816
12817                                 /*
12818                                  * This is the same as CEE_CALLI, but passes an additional argument
12819                                  * to the called method in llvmonly mode.
12820                                  * This is only used by delegate invoke wrappers to call the
12821                                  * actual delegate method.
12822                                  */
12823                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12824
12825                                 CHECK_OPSIZE (6);
12826                                 token = read32 (ip + 2);
12827
12828                                 ins = NULL;
12829
12830                                 cmethod = NULL;
12831                                 CHECK_STACK (1);
12832                                 --sp;
12833                                 addr = *sp;
12834                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12835                                 CHECK_CFG_ERROR;
12836
12837                                 if (cfg->llvm_only)
12838                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12839
12840                                 n = fsig->param_count + fsig->hasthis + 1;
12841
12842                                 CHECK_STACK (n);
12843
12844                                 sp -= n;
12845                                 arg = sp [n - 1];
12846
12847                                 if (cfg->llvm_only) {
12848                                         /*
12849                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12850                                          * cconv. This is set by mono_init_delegate ().
12851                                          */
12852                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12853                                                 MonoInst *callee = addr;
12854                                                 MonoInst *call, *localloc_ins;
12855                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12856                                                 int low_bit_reg = alloc_preg (cfg);
12857
12858                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12859                                                 NEW_BBLOCK (cfg, end_bb);
12860
12861                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12862                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12863                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12864
12865                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12866                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12867                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12868                                                 /*
12869                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12870                                                  */
12871                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12872                                                 ins->dreg = alloc_preg (cfg);
12873                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12874                                                 MONO_ADD_INS (cfg->cbb, ins);
12875                                                 localloc_ins = ins;
12876                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12877                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12878                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12879
12880                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12881                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12882
12883                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12884                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12885                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12886                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12887                                                 ins->dreg = call->dreg;
12888
12889                                                 MONO_START_BB (cfg, end_bb);
12890                                         } else {
12891                                                 /* Caller uses a normal calling conv */
12892
12893                                                 MonoInst *callee = addr;
12894                                                 MonoInst *call, *localloc_ins;
12895                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12896                                                 int low_bit_reg = alloc_preg (cfg);
12897
12898                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12899                                                 NEW_BBLOCK (cfg, end_bb);
12900
12901                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12902                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12903                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12904
12905                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12906                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12907                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12908                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12909                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12910                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12911                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12912                                                 MONO_ADD_INS (cfg->cbb, addr);
12913                                                 /*
12914                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12915                                                  */
12916                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12917                                                 ins->dreg = alloc_preg (cfg);
12918                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12919                                                 MONO_ADD_INS (cfg->cbb, ins);
12920                                                 localloc_ins = ins;
12921                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12922                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12923                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12924
12925                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12926                                                 ins->dreg = call->dreg;
12927                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12928
12929                                                 MONO_START_BB (cfg, end_bb);
12930                                         }
12931                                 } else {
12932                                         /* Same as CEE_CALLI */
12933                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12934                                                 /*
12935                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12936                                                  */
12937                                                 MonoInst *callee = addr;
12938
12939                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12940                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12941                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12942                                         } else {
12943                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12944                                         }
12945                                 }
12946
12947                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12948                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12949
12950                                 CHECK_CFG_EXCEPTION;
12951
12952                                 ip += 6;
12953                                 ins_flag = 0;
12954                                 constrained_class = NULL;
12955                                 break;
12956                         }
12957                         case CEE_MONO_LDDOMAIN:
12958                                 CHECK_STACK_OVF (1);
12959                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12960                                 ip += 2;
12961                                 *sp++ = ins;
12962                                 break;
12963                         case CEE_MONO_GET_LAST_ERROR:
12964                                 CHECK_OPSIZE (2);
12965                                 CHECK_STACK_OVF (1);
12966
12967                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12968                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12969                                 ins->type = STACK_I4;
12970                                 MONO_ADD_INS (cfg->cbb, ins);
12971
12972                                 ip += 2;
12973                                 *sp++ = ins;
12974                                 break;
12975                         default:
12976                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12977                                 break;
12978                         }
12979                         break;
12980                 }
12981
12982                 case CEE_PREFIX1: {
12983                         CHECK_OPSIZE (2);
12984                         switch (ip [1]) {
12985                         case CEE_ARGLIST: {
12986                                 /* somewhat similar to LDTOKEN */
12987                                 MonoInst *addr, *vtvar;
12988                                 CHECK_STACK_OVF (1);
12989                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12990
12991                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12992                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12993
12994                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12995                                 ins->type = STACK_VTYPE;
12996                                 ins->klass = mono_defaults.argumenthandle_class;
12997                                 *sp++ = ins;
12998                                 ip += 2;
12999                                 break;
13000                         }
13001                         case CEE_CEQ:
13002                         case CEE_CGT:
13003                         case CEE_CGT_UN:
13004                         case CEE_CLT:
13005                         case CEE_CLT_UN: {
13006                                 MonoInst *cmp, *arg1, *arg2;
13007
13008                                 CHECK_STACK (2);
13009                                 sp -= 2;
13010                                 arg1 = sp [0];
13011                                 arg2 = sp [1];
13012
13013                                 /*
13014                                  * The following transforms:
13015                                  *    CEE_CEQ    into OP_CEQ
13016                                  *    CEE_CGT    into OP_CGT
13017                                  *    CEE_CGT_UN into OP_CGT_UN
13018                                  *    CEE_CLT    into OP_CLT
13019                                  *    CEE_CLT_UN into OP_CLT_UN
13020                                  */
13021                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13022
13023                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13024                                 cmp->sreg1 = arg1->dreg;
13025                                 cmp->sreg2 = arg2->dreg;
13026                                 type_from_op (cfg, cmp, arg1, arg2);
13027                                 CHECK_TYPE (cmp);
13028                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13029                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13030                                         cmp->opcode = OP_LCOMPARE;
13031                                 else if (arg1->type == STACK_R4)
13032                                         cmp->opcode = OP_RCOMPARE;
13033                                 else if (arg1->type == STACK_R8)
13034                                         cmp->opcode = OP_FCOMPARE;
13035                                 else
13036                                         cmp->opcode = OP_ICOMPARE;
13037                                 MONO_ADD_INS (cfg->cbb, cmp);
13038                                 ins->type = STACK_I4;
13039                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13040                                 type_from_op (cfg, ins, arg1, arg2);
13041
13042                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13043                                         /*
13044                                          * The backends expect the fceq opcodes to do the
13045                                          * comparison too.
13046                                          */
13047                                         ins->sreg1 = cmp->sreg1;
13048                                         ins->sreg2 = cmp->sreg2;
13049                                         NULLIFY_INS (cmp);
13050                                 }
13051                                 MONO_ADD_INS (cfg->cbb, ins);
13052                                 *sp++ = ins;
13053                                 ip += 2;
13054                                 break;
13055                         }
13056                         case CEE_LDFTN: {
13057                                 MonoInst *argconst;
13058                                 MonoMethod *cil_method;
13059
13060                                 CHECK_STACK_OVF (1);
13061                                 CHECK_OPSIZE (6);
13062                                 n = read32 (ip + 2);
13063                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13064                                 CHECK_CFG_ERROR;
13065
13066                                 mono_class_init (cmethod->klass);
13067
13068                                 mono_save_token_info (cfg, image, n, cmethod);
13069
13070                                 context_used = mini_method_check_context_used (cfg, cmethod);
13071
13072                                 cil_method = cmethod;
13073                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13074                                         emit_method_access_failure (cfg, method, cil_method);
13075
13076                                 if (mono_security_core_clr_enabled ())
13077                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13078
13079                                 /*
13080                                  * Optimize the common case of ldftn+delegate creation
13081                                  */
13082                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13083                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13084                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13085                                                 MonoInst *target_ins, *handle_ins;
13086                                                 MonoMethod *invoke;
13087                                                 int invoke_context_used;
13088
13089                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13090                                                 if (!invoke || !mono_method_signature (invoke))
13091                                                         LOAD_ERROR;
13092
13093                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13094
13095                                                 target_ins = sp [-1];
13096
13097                                                 if (mono_security_core_clr_enabled ())
13098                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13099
13100                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13101                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13102                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13103                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13104                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13105                                                         }
13106                                                 }
13107
13108                                                 /* FIXME: SGEN support */
13109                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13110                                                         ip += 6;
13111                                                         if (cfg->verbose_level > 3)
13112                                                                 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));
13113                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13114                                                                 sp --;
13115                                                                 *sp = handle_ins;
13116                                                                 CHECK_CFG_EXCEPTION;
13117                                                                 ip += 5;
13118                                                                 sp ++;
13119                                                                 break;
13120                                                         }
13121                                                         ip -= 6;
13122                                                 }
13123                                         }
13124                                 }
13125
13126                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13127                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13128                                 *sp++ = ins;
13129
13130                                 ip += 6;
13131                                 inline_costs += 10 * num_calls++;
13132                                 break;
13133                         }
13134                         case CEE_LDVIRTFTN: {
13135                                 MonoInst *args [2];
13136
13137                                 CHECK_STACK (1);
13138                                 CHECK_OPSIZE (6);
13139                                 n = read32 (ip + 2);
13140                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13141                                 CHECK_CFG_ERROR;
13142
13143                                 mono_class_init (cmethod->klass);
13144
13145                                 context_used = mini_method_check_context_used (cfg, cmethod);
13146
13147                                 if (mono_security_core_clr_enabled ())
13148                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13149
13150                                 /*
13151                                  * Optimize the common case of ldvirtftn+delegate creation
13152                                  */
13153                                 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)) {
13154                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13155                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13156                                                 MonoInst *target_ins, *handle_ins;
13157                                                 MonoMethod *invoke;
13158                                                 int invoke_context_used;
13159                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13160
13161                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13162                                                 if (!invoke || !mono_method_signature (invoke))
13163                                                         LOAD_ERROR;
13164
13165                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13166
13167                                                 target_ins = sp [-1];
13168
13169                                                 if (mono_security_core_clr_enabled ())
13170                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13171
13172                                                 /* FIXME: SGEN support */
13173                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13174                                                         ip += 6;
13175                                                         if (cfg->verbose_level > 3)
13176                                                                 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));
13177                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13178                                                                 sp -= 2;
13179                                                                 *sp = handle_ins;
13180                                                                 CHECK_CFG_EXCEPTION;
13181                                                                 ip += 5;
13182                                                                 sp ++;
13183                                                                 break;
13184                                                         }
13185                                                         ip -= 6;
13186                                                 }
13187                                         }
13188                                 }
13189
13190                                 --sp;
13191                                 args [0] = *sp;
13192
13193                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13194                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13195
13196                                 if (context_used)
13197                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13198                                 else
13199                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13200
13201                                 ip += 6;
13202                                 inline_costs += 10 * num_calls++;
13203                                 break;
13204                         }
13205                         case CEE_LDARG:
13206                                 CHECK_STACK_OVF (1);
13207                                 CHECK_OPSIZE (4);
13208                                 n = read16 (ip + 2);
13209                                 CHECK_ARG (n);
13210                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13211                                 *sp++ = ins;
13212                                 ip += 4;
13213                                 break;
13214                         case CEE_LDARGA:
13215                                 CHECK_STACK_OVF (1);
13216                                 CHECK_OPSIZE (4);
13217                                 n = read16 (ip + 2);
13218                                 CHECK_ARG (n);
13219                                 NEW_ARGLOADA (cfg, ins, n);
13220                                 MONO_ADD_INS (cfg->cbb, ins);
13221                                 *sp++ = ins;
13222                                 ip += 4;
13223                                 break;
13224                         case CEE_STARG:
13225                                 CHECK_STACK (1);
13226                                 --sp;
13227                                 CHECK_OPSIZE (4);
13228                                 n = read16 (ip + 2);
13229                                 CHECK_ARG (n);
13230                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13231                                         UNVERIFIED;
13232                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13233                                 ip += 4;
13234                                 break;
13235                         case CEE_LDLOC:
13236                                 CHECK_STACK_OVF (1);
13237                                 CHECK_OPSIZE (4);
13238                                 n = read16 (ip + 2);
13239                                 CHECK_LOCAL (n);
13240                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13241                                 *sp++ = ins;
13242                                 ip += 4;
13243                                 break;
13244                         case CEE_LDLOCA: {
13245                                 unsigned char *tmp_ip;
13246                                 CHECK_STACK_OVF (1);
13247                                 CHECK_OPSIZE (4);
13248                                 n = read16 (ip + 2);
13249                                 CHECK_LOCAL (n);
13250
13251                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13252                                         ip = tmp_ip;
13253                                         inline_costs += 1;
13254                                         break;
13255                                 }
13256
13257                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13258                                 *sp++ = ins;
13259                                 ip += 4;
13260                                 break;
13261                         }
13262                         case CEE_STLOC:
13263                                 CHECK_STACK (1);
13264                                 --sp;
13265                                 CHECK_OPSIZE (4);
13266                                 n = read16 (ip + 2);
13267                                 CHECK_LOCAL (n);
13268                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13269                                         UNVERIFIED;
13270                                 emit_stloc_ir (cfg, sp, header, n);
13271                                 ip += 4;
13272                                 inline_costs += 1;
13273                                 break;
13274                         case CEE_LOCALLOC: {
13275                                 CHECK_STACK (1);
13276                                 MonoBasicBlock *non_zero_bb, *end_bb;
13277                                 int alloc_ptr = alloc_preg (cfg);
13278                                 --sp;
13279                                 if (sp != stack_start)
13280                                         UNVERIFIED;
13281                                 if (cfg->method != method)
13282                                         /*
13283                                          * Inlining this into a loop in a parent could lead to
13284                                          * stack overflows which is different behavior than the
13285                                          * non-inlined case, thus disable inlining in this case.
13286                                          */
13287                                         INLINE_FAILURE("localloc");
13288
13289                                 NEW_BBLOCK (cfg, non_zero_bb);
13290                                 NEW_BBLOCK (cfg, end_bb);
13291
13292                                 /* if size != zero */
13293                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
13294                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
13295
13296                                 //size is zero, so result is NULL
13297                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
13298                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
13299
13300                                 MONO_START_BB (cfg, non_zero_bb);
13301                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13302                                 ins->dreg = alloc_ptr;
13303                                 ins->sreg1 = sp [0]->dreg;
13304                                 ins->type = STACK_PTR;
13305                                 MONO_ADD_INS (cfg->cbb, ins);
13306
13307                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13308                                 if (init_locals)
13309                                         ins->flags |= MONO_INST_INIT;
13310
13311                                 MONO_START_BB (cfg, end_bb);
13312                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
13313                                 ins->type = STACK_PTR;
13314
13315                                 *sp++ = ins;
13316                                 ip += 2;
13317                                 break;
13318                         }
13319                         case CEE_ENDFILTER: {
13320                                 MonoExceptionClause *clause, *nearest;
13321                                 int cc;
13322
13323                                 CHECK_STACK (1);
13324                                 --sp;
13325                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13326                                         UNVERIFIED;
13327                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13328                                 ins->sreg1 = (*sp)->dreg;
13329                                 MONO_ADD_INS (cfg->cbb, ins);
13330                                 start_new_bblock = 1;
13331                                 ip += 2;
13332
13333                                 nearest = NULL;
13334                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13335                                         clause = &header->clauses [cc];
13336                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13337                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13338                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13339                                                 nearest = clause;
13340                                 }
13341                                 g_assert (nearest);
13342                                 if ((ip - header->code) != nearest->handler_offset)
13343                                         UNVERIFIED;
13344
13345                                 break;
13346                         }
13347                         case CEE_UNALIGNED_:
13348                                 ins_flag |= MONO_INST_UNALIGNED;
13349                                 /* FIXME: record alignment? we can assume 1 for now */
13350                                 CHECK_OPSIZE (3);
13351                                 ip += 3;
13352                                 break;
13353                         case CEE_VOLATILE_:
13354                                 ins_flag |= MONO_INST_VOLATILE;
13355                                 ip += 2;
13356                                 break;
13357                         case CEE_TAIL_:
13358                                 ins_flag   |= MONO_INST_TAILCALL;
13359                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13360                                 /* Can't inline tail calls at this time */
13361                                 inline_costs += 100000;
13362                                 ip += 2;
13363                                 break;
13364                         case CEE_INITOBJ:
13365                                 CHECK_STACK (1);
13366                                 --sp;
13367                                 CHECK_OPSIZE (6);
13368                                 token = read32 (ip + 2);
13369                                 klass = mini_get_class (method, token, generic_context);
13370                                 CHECK_TYPELOAD (klass);
13371                                 if (generic_class_is_reference_type (cfg, klass))
13372                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13373                                 else
13374                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13375                                 ip += 6;
13376                                 inline_costs += 1;
13377                                 break;
13378                         case CEE_CONSTRAINED_:
13379                                 CHECK_OPSIZE (6);
13380                                 token = read32 (ip + 2);
13381                                 constrained_class = mini_get_class (method, token, generic_context);
13382                                 CHECK_TYPELOAD (constrained_class);
13383                                 ip += 6;
13384                                 break;
13385                         case CEE_CPBLK:
13386                         case CEE_INITBLK: {
13387                                 MonoInst *iargs [3];
13388                                 CHECK_STACK (3);
13389                                 sp -= 3;
13390
13391                                 /* Skip optimized paths for volatile operations. */
13392                                 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)) {
13393                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13394                                 } 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)) {
13395                                         /* emit_memset only works when val == 0 */
13396                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13397                                 } else {
13398                                         MonoInst *call;
13399                                         iargs [0] = sp [0];
13400                                         iargs [1] = sp [1];
13401                                         iargs [2] = sp [2];
13402                                         if (ip [1] == CEE_CPBLK) {
13403                                                 /*
13404                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13405                                                  * and release barriers for cpblk. It is technically both a load and
13406                                                  * store operation, so it seems like that's the sensible thing to do.
13407                                                  *
13408                                                  * FIXME: We emit full barriers on both sides of the operation for
13409                                                  * simplicity. We should have a separate atomic memcpy method instead.
13410                                                  */
13411                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13412
13413                                                 if (ins_flag & MONO_INST_VOLATILE)
13414                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13415
13416                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13417                                                 call->flags |= ins_flag;
13418
13419                                                 if (ins_flag & MONO_INST_VOLATILE)
13420                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13421                                         } else {
13422                                                 MonoMethod *memset_method = get_memset_method ();
13423                                                 if (ins_flag & MONO_INST_VOLATILE) {
13424                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13425                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13426                                                 }
13427                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13428                                                 call->flags |= ins_flag;
13429                                         }
13430                                 }
13431                                 ip += 2;
13432                                 ins_flag = 0;
13433                                 inline_costs += 1;
13434                                 break;
13435                         }
13436                         case CEE_NO_:
13437                                 CHECK_OPSIZE (3);
13438                                 if (ip [2] & 0x1)
13439                                         ins_flag |= MONO_INST_NOTYPECHECK;
13440                                 if (ip [2] & 0x2)
13441                                         ins_flag |= MONO_INST_NORANGECHECK;
13442                                 /* we ignore the no-nullcheck for now since we
13443                                  * really do it explicitly only when doing callvirt->call
13444                                  */
13445                                 ip += 3;
13446                                 break;
13447                         case CEE_RETHROW: {
13448                                 MonoInst *load;
13449                                 int handler_offset = -1;
13450
13451                                 for (i = 0; i < header->num_clauses; ++i) {
13452                                         MonoExceptionClause *clause = &header->clauses [i];
13453                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13454                                                 handler_offset = clause->handler_offset;
13455                                                 break;
13456                                         }
13457                                 }
13458
13459                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13460
13461                                 if (handler_offset == -1)
13462                                         UNVERIFIED;
13463
13464                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13465                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13466                                 ins->sreg1 = load->dreg;
13467                                 MONO_ADD_INS (cfg->cbb, ins);
13468
13469                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13470                                 MONO_ADD_INS (cfg->cbb, ins);
13471
13472                                 sp = stack_start;
13473                                 link_bblock (cfg, cfg->cbb, end_bblock);
13474                                 start_new_bblock = 1;
13475                                 ip += 2;
13476                                 break;
13477                         }
13478                         case CEE_SIZEOF: {
13479                                 guint32 val;
13480                                 int ialign;
13481
13482                                 CHECK_STACK_OVF (1);
13483                                 CHECK_OPSIZE (6);
13484                                 token = read32 (ip + 2);
13485                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13486                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13487                                         CHECK_CFG_ERROR;
13488
13489                                         val = mono_type_size (type, &ialign);
13490                                 } else {
13491                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13492                                         CHECK_TYPELOAD (klass);
13493
13494                                         val = mono_type_size (&klass->byval_arg, &ialign);
13495
13496                                         if (mini_is_gsharedvt_klass (klass))
13497                                                 GSHAREDVT_FAILURE (*ip);
13498                                 }
13499                                 EMIT_NEW_ICONST (cfg, ins, val);
13500                                 *sp++= ins;
13501                                 ip += 6;
13502                                 break;
13503                         }
13504                         case CEE_REFANYTYPE: {
13505                                 MonoInst *src_var, *src;
13506
13507                                 GSHAREDVT_FAILURE (*ip);
13508
13509                                 CHECK_STACK (1);
13510                                 --sp;
13511
13512                                 // FIXME:
13513                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13514                                 if (!src_var)
13515                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13516                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13517                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13518                                 *sp++ = ins;
13519                                 ip += 2;
13520                                 break;
13521                         }
13522                         case CEE_READONLY_:
13523                                 readonly = TRUE;
13524                                 ip += 2;
13525                                 break;
13526
13527                         case CEE_UNUSED56:
13528                         case CEE_UNUSED57:
13529                         case CEE_UNUSED70:
13530                         case CEE_UNUSED:
13531                         case CEE_UNUSED99:
13532                                 UNVERIFIED;
13533
13534                         default:
13535                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13536                                 UNVERIFIED;
13537                         }
13538                         break;
13539                 }
13540                 case CEE_UNUSED58:
13541                 case CEE_UNUSED1:
13542                         UNVERIFIED;
13543
13544                 default:
13545                         g_warning ("opcode 0x%02x not handled", *ip);
13546                         UNVERIFIED;
13547                 }
13548         }
13549         if (start_new_bblock != 1)
13550                 UNVERIFIED;
13551
13552         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13553         if (cfg->cbb->next_bb) {
13554                 /* This could already be set because of inlining, #693905 */
13555                 MonoBasicBlock *bb = cfg->cbb;
13556
13557                 while (bb->next_bb)
13558                         bb = bb->next_bb;
13559                 bb->next_bb = end_bblock;
13560         } else {
13561                 cfg->cbb->next_bb = end_bblock;
13562         }
13563
13564         if (cfg->method == method && cfg->domainvar) {
13565                 MonoInst *store;
13566                 MonoInst *get_domain;
13567
13568                 cfg->cbb = init_localsbb;
13569
13570                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13571                         MONO_ADD_INS (cfg->cbb, get_domain);
13572                 } else {
13573                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13574                 }
13575                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13576                 MONO_ADD_INS (cfg->cbb, store);
13577         }
13578
13579 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13580         if (cfg->compile_aot)
13581                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13582                 mono_get_got_var (cfg);
13583 #endif
13584
13585         if (cfg->method == method && cfg->got_var)
13586                 mono_emit_load_got_addr (cfg);
13587
13588         if (init_localsbb) {
13589                 cfg->cbb = init_localsbb;
13590                 cfg->ip = NULL;
13591                 for (i = 0; i < header->num_locals; ++i) {
13592                         emit_init_local (cfg, i, header->locals [i], init_locals);
13593                 }
13594         }
13595
13596         if (cfg->init_ref_vars && cfg->method == method) {
13597                 /* Emit initialization for ref vars */
13598                 // FIXME: Avoid duplication initialization for IL locals.
13599                 for (i = 0; i < cfg->num_varinfo; ++i) {
13600                         MonoInst *ins = cfg->varinfo [i];
13601
13602                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13603                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13604                 }
13605         }
13606
13607         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13608                 cfg->cbb = init_localsbb;
13609                 emit_push_lmf (cfg);
13610         }
13611
13612         cfg->cbb = init_localsbb;
13613         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13614
13615         if (seq_points) {
13616                 MonoBasicBlock *bb;
13617
13618                 /*
13619                  * Make seq points at backward branch targets interruptable.
13620                  */
13621                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13622                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13623                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13624         }
13625
13626         /* Add a sequence point for method entry/exit events */
13627         if (seq_points && cfg->gen_sdb_seq_points) {
13628                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13629                 MONO_ADD_INS (init_localsbb, ins);
13630                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13631                 MONO_ADD_INS (cfg->bb_exit, ins);
13632         }
13633
13634         /*
13635          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13636          * the code they refer to was dead (#11880).
13637          */
13638         if (sym_seq_points) {
13639                 for (i = 0; i < header->code_size; ++i) {
13640                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13641                                 MonoInst *ins;
13642
13643                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13644                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13645                         }
13646                 }
13647         }
13648
13649         cfg->ip = NULL;
13650
13651         if (cfg->method == method) {
13652                 MonoBasicBlock *bb;
13653                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13654                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13655                         if (cfg->spvars)
13656                                 mono_create_spvar_for_region (cfg, bb->region);
13657                         if (cfg->verbose_level > 2)
13658                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13659                 }
13660         } else {
13661                 MonoBasicBlock *bb;
13662                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13663                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13664                         bb->real_offset = inline_offset;
13665                 }
13666         }
13667
13668         if (inline_costs < 0) {
13669                 char *mname;
13670
13671                 /* Method is too large */
13672                 mname = mono_method_full_name (method, TRUE);
13673                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13674                 g_free (mname);
13675         }
13676
13677         if ((cfg->verbose_level > 2) && (cfg->method == method))
13678                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13679
13680         goto cleanup;
13681
13682 mono_error_exit:
13683         g_assert (!mono_error_ok (&cfg->error));
13684         goto cleanup;
13685
13686  exception_exit:
13687         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13688         goto cleanup;
13689
13690  unverified:
13691         set_exception_type_from_invalid_il (cfg, method, ip);
13692         goto cleanup;
13693
13694  cleanup:
13695         g_slist_free (class_inits);
13696         mono_basic_block_free (original_bb);
13697         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13698         if (cfg->exception_type)
13699                 return -1;
13700         else
13701                 return inline_costs;
13702 }
13703
13704 static int
13705 store_membase_reg_to_store_membase_imm (int opcode)
13706 {
13707         switch (opcode) {
13708         case OP_STORE_MEMBASE_REG:
13709                 return OP_STORE_MEMBASE_IMM;
13710         case OP_STOREI1_MEMBASE_REG:
13711                 return OP_STOREI1_MEMBASE_IMM;
13712         case OP_STOREI2_MEMBASE_REG:
13713                 return OP_STOREI2_MEMBASE_IMM;
13714         case OP_STOREI4_MEMBASE_REG:
13715                 return OP_STOREI4_MEMBASE_IMM;
13716         case OP_STOREI8_MEMBASE_REG:
13717                 return OP_STOREI8_MEMBASE_IMM;
13718         default:
13719                 g_assert_not_reached ();
13720         }
13721
13722         return -1;
13723 }
13724
13725 int
13726 mono_op_to_op_imm (int opcode)
13727 {
13728         switch (opcode) {
13729         case OP_IADD:
13730                 return OP_IADD_IMM;
13731         case OP_ISUB:
13732                 return OP_ISUB_IMM;
13733         case OP_IDIV:
13734                 return OP_IDIV_IMM;
13735         case OP_IDIV_UN:
13736                 return OP_IDIV_UN_IMM;
13737         case OP_IREM:
13738                 return OP_IREM_IMM;
13739         case OP_IREM_UN:
13740                 return OP_IREM_UN_IMM;
13741         case OP_IMUL:
13742                 return OP_IMUL_IMM;
13743         case OP_IAND:
13744                 return OP_IAND_IMM;
13745         case OP_IOR:
13746                 return OP_IOR_IMM;
13747         case OP_IXOR:
13748                 return OP_IXOR_IMM;
13749         case OP_ISHL:
13750                 return OP_ISHL_IMM;
13751         case OP_ISHR:
13752                 return OP_ISHR_IMM;
13753         case OP_ISHR_UN:
13754                 return OP_ISHR_UN_IMM;
13755
13756         case OP_LADD:
13757                 return OP_LADD_IMM;
13758         case OP_LSUB:
13759                 return OP_LSUB_IMM;
13760         case OP_LAND:
13761                 return OP_LAND_IMM;
13762         case OP_LOR:
13763                 return OP_LOR_IMM;
13764         case OP_LXOR:
13765                 return OP_LXOR_IMM;
13766         case OP_LSHL:
13767                 return OP_LSHL_IMM;
13768         case OP_LSHR:
13769                 return OP_LSHR_IMM;
13770         case OP_LSHR_UN:
13771                 return OP_LSHR_UN_IMM;
13772 #if SIZEOF_REGISTER == 8
13773         case OP_LREM:
13774                 return OP_LREM_IMM;
13775 #endif
13776
13777         case OP_COMPARE:
13778                 return OP_COMPARE_IMM;
13779         case OP_ICOMPARE:
13780                 return OP_ICOMPARE_IMM;
13781         case OP_LCOMPARE:
13782                 return OP_LCOMPARE_IMM;
13783
13784         case OP_STORE_MEMBASE_REG:
13785                 return OP_STORE_MEMBASE_IMM;
13786         case OP_STOREI1_MEMBASE_REG:
13787                 return OP_STOREI1_MEMBASE_IMM;
13788         case OP_STOREI2_MEMBASE_REG:
13789                 return OP_STOREI2_MEMBASE_IMM;
13790         case OP_STOREI4_MEMBASE_REG:
13791                 return OP_STOREI4_MEMBASE_IMM;
13792
13793 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13794         case OP_X86_PUSH:
13795                 return OP_X86_PUSH_IMM;
13796         case OP_X86_COMPARE_MEMBASE_REG:
13797                 return OP_X86_COMPARE_MEMBASE_IMM;
13798 #endif
13799 #if defined(TARGET_AMD64)
13800         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13801                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13802 #endif
13803         case OP_VOIDCALL_REG:
13804                 return OP_VOIDCALL;
13805         case OP_CALL_REG:
13806                 return OP_CALL;
13807         case OP_LCALL_REG:
13808                 return OP_LCALL;
13809         case OP_FCALL_REG:
13810                 return OP_FCALL;
13811         case OP_LOCALLOC:
13812                 return OP_LOCALLOC_IMM;
13813         }
13814
13815         return -1;
13816 }
13817
13818 static int
13819 ldind_to_load_membase (int opcode)
13820 {
13821         switch (opcode) {
13822         case CEE_LDIND_I1:
13823                 return OP_LOADI1_MEMBASE;
13824         case CEE_LDIND_U1:
13825                 return OP_LOADU1_MEMBASE;
13826         case CEE_LDIND_I2:
13827                 return OP_LOADI2_MEMBASE;
13828         case CEE_LDIND_U2:
13829                 return OP_LOADU2_MEMBASE;
13830         case CEE_LDIND_I4:
13831                 return OP_LOADI4_MEMBASE;
13832         case CEE_LDIND_U4:
13833                 return OP_LOADU4_MEMBASE;
13834         case CEE_LDIND_I:
13835                 return OP_LOAD_MEMBASE;
13836         case CEE_LDIND_REF:
13837                 return OP_LOAD_MEMBASE;
13838         case CEE_LDIND_I8:
13839                 return OP_LOADI8_MEMBASE;
13840         case CEE_LDIND_R4:
13841                 return OP_LOADR4_MEMBASE;
13842         case CEE_LDIND_R8:
13843                 return OP_LOADR8_MEMBASE;
13844         default:
13845                 g_assert_not_reached ();
13846         }
13847
13848         return -1;
13849 }
13850
13851 static int
13852 stind_to_store_membase (int opcode)
13853 {
13854         switch (opcode) {
13855         case CEE_STIND_I1:
13856                 return OP_STOREI1_MEMBASE_REG;
13857         case CEE_STIND_I2:
13858                 return OP_STOREI2_MEMBASE_REG;
13859         case CEE_STIND_I4:
13860                 return OP_STOREI4_MEMBASE_REG;
13861         case CEE_STIND_I:
13862         case CEE_STIND_REF:
13863                 return OP_STORE_MEMBASE_REG;
13864         case CEE_STIND_I8:
13865                 return OP_STOREI8_MEMBASE_REG;
13866         case CEE_STIND_R4:
13867                 return OP_STORER4_MEMBASE_REG;
13868         case CEE_STIND_R8:
13869                 return OP_STORER8_MEMBASE_REG;
13870         default:
13871                 g_assert_not_reached ();
13872         }
13873
13874         return -1;
13875 }
13876
13877 int
13878 mono_load_membase_to_load_mem (int opcode)
13879 {
13880         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13881 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13882         switch (opcode) {
13883         case OP_LOAD_MEMBASE:
13884                 return OP_LOAD_MEM;
13885         case OP_LOADU1_MEMBASE:
13886                 return OP_LOADU1_MEM;
13887         case OP_LOADU2_MEMBASE:
13888                 return OP_LOADU2_MEM;
13889         case OP_LOADI4_MEMBASE:
13890                 return OP_LOADI4_MEM;
13891         case OP_LOADU4_MEMBASE:
13892                 return OP_LOADU4_MEM;
13893 #if SIZEOF_REGISTER == 8
13894         case OP_LOADI8_MEMBASE:
13895                 return OP_LOADI8_MEM;
13896 #endif
13897         }
13898 #endif
13899
13900         return -1;
13901 }
13902
13903 static inline int
13904 op_to_op_dest_membase (int store_opcode, int opcode)
13905 {
13906 #if defined(TARGET_X86)
13907         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13908                 return -1;
13909
13910         switch (opcode) {
13911         case OP_IADD:
13912                 return OP_X86_ADD_MEMBASE_REG;
13913         case OP_ISUB:
13914                 return OP_X86_SUB_MEMBASE_REG;
13915         case OP_IAND:
13916                 return OP_X86_AND_MEMBASE_REG;
13917         case OP_IOR:
13918                 return OP_X86_OR_MEMBASE_REG;
13919         case OP_IXOR:
13920                 return OP_X86_XOR_MEMBASE_REG;
13921         case OP_ADD_IMM:
13922         case OP_IADD_IMM:
13923                 return OP_X86_ADD_MEMBASE_IMM;
13924         case OP_SUB_IMM:
13925         case OP_ISUB_IMM:
13926                 return OP_X86_SUB_MEMBASE_IMM;
13927         case OP_AND_IMM:
13928         case OP_IAND_IMM:
13929                 return OP_X86_AND_MEMBASE_IMM;
13930         case OP_OR_IMM:
13931         case OP_IOR_IMM:
13932                 return OP_X86_OR_MEMBASE_IMM;
13933         case OP_XOR_IMM:
13934         case OP_IXOR_IMM:
13935                 return OP_X86_XOR_MEMBASE_IMM;
13936         case OP_MOVE:
13937                 return OP_NOP;
13938         }
13939 #endif
13940
13941 #if defined(TARGET_AMD64)
13942         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13943                 return -1;
13944
13945         switch (opcode) {
13946         case OP_IADD:
13947                 return OP_X86_ADD_MEMBASE_REG;
13948         case OP_ISUB:
13949                 return OP_X86_SUB_MEMBASE_REG;
13950         case OP_IAND:
13951                 return OP_X86_AND_MEMBASE_REG;
13952         case OP_IOR:
13953                 return OP_X86_OR_MEMBASE_REG;
13954         case OP_IXOR:
13955                 return OP_X86_XOR_MEMBASE_REG;
13956         case OP_IADD_IMM:
13957                 return OP_X86_ADD_MEMBASE_IMM;
13958         case OP_ISUB_IMM:
13959                 return OP_X86_SUB_MEMBASE_IMM;
13960         case OP_IAND_IMM:
13961                 return OP_X86_AND_MEMBASE_IMM;
13962         case OP_IOR_IMM:
13963                 return OP_X86_OR_MEMBASE_IMM;
13964         case OP_IXOR_IMM:
13965                 return OP_X86_XOR_MEMBASE_IMM;
13966         case OP_LADD:
13967                 return OP_AMD64_ADD_MEMBASE_REG;
13968         case OP_LSUB:
13969                 return OP_AMD64_SUB_MEMBASE_REG;
13970         case OP_LAND:
13971                 return OP_AMD64_AND_MEMBASE_REG;
13972         case OP_LOR:
13973                 return OP_AMD64_OR_MEMBASE_REG;
13974         case OP_LXOR:
13975                 return OP_AMD64_XOR_MEMBASE_REG;
13976         case OP_ADD_IMM:
13977         case OP_LADD_IMM:
13978                 return OP_AMD64_ADD_MEMBASE_IMM;
13979         case OP_SUB_IMM:
13980         case OP_LSUB_IMM:
13981                 return OP_AMD64_SUB_MEMBASE_IMM;
13982         case OP_AND_IMM:
13983         case OP_LAND_IMM:
13984                 return OP_AMD64_AND_MEMBASE_IMM;
13985         case OP_OR_IMM:
13986         case OP_LOR_IMM:
13987                 return OP_AMD64_OR_MEMBASE_IMM;
13988         case OP_XOR_IMM:
13989         case OP_LXOR_IMM:
13990                 return OP_AMD64_XOR_MEMBASE_IMM;
13991         case OP_MOVE:
13992                 return OP_NOP;
13993         }
13994 #endif
13995
13996         return -1;
13997 }
13998
13999 static inline int
14000 op_to_op_store_membase (int store_opcode, int opcode)
14001 {
14002 #if defined(TARGET_X86) || defined(TARGET_AMD64)
14003         switch (opcode) {
14004         case OP_ICEQ:
14005                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14006                         return OP_X86_SETEQ_MEMBASE;
14007         case OP_CNE:
14008                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14009                         return OP_X86_SETNE_MEMBASE;
14010         }
14011 #endif
14012
14013         return -1;
14014 }
14015
14016 static inline int
14017 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14018 {
14019 #ifdef TARGET_X86
14020         /* FIXME: This has sign extension issues */
14021         /*
14022         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14023                 return OP_X86_COMPARE_MEMBASE8_IMM;
14024         */
14025
14026         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14027                 return -1;
14028
14029         switch (opcode) {
14030         case OP_X86_PUSH:
14031                 return OP_X86_PUSH_MEMBASE;
14032         case OP_COMPARE_IMM:
14033         case OP_ICOMPARE_IMM:
14034                 return OP_X86_COMPARE_MEMBASE_IMM;
14035         case OP_COMPARE:
14036         case OP_ICOMPARE:
14037                 return OP_X86_COMPARE_MEMBASE_REG;
14038         }
14039 #endif
14040
14041 #ifdef TARGET_AMD64
14042         /* FIXME: This has sign extension issues */
14043         /*
14044         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14045                 return OP_X86_COMPARE_MEMBASE8_IMM;
14046         */
14047
14048         switch (opcode) {
14049         case OP_X86_PUSH:
14050                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14051                         return OP_X86_PUSH_MEMBASE;
14052                 break;
14053                 /* FIXME: This only works for 32 bit immediates
14054         case OP_COMPARE_IMM:
14055         case OP_LCOMPARE_IMM:
14056                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14057                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14058                 */
14059         case OP_ICOMPARE_IMM:
14060                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14061                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14062                 break;
14063         case OP_COMPARE:
14064         case OP_LCOMPARE:
14065                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14066                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14067                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14068                         return OP_AMD64_COMPARE_MEMBASE_REG;
14069                 break;
14070         case OP_ICOMPARE:
14071                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14072                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14073                 break;
14074         }
14075 #endif
14076
14077         return -1;
14078 }
14079
14080 static inline int
14081 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14082 {
14083 #ifdef TARGET_X86
14084         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14085                 return -1;
14086
14087         switch (opcode) {
14088         case OP_COMPARE:
14089         case OP_ICOMPARE:
14090                 return OP_X86_COMPARE_REG_MEMBASE;
14091         case OP_IADD:
14092                 return OP_X86_ADD_REG_MEMBASE;
14093         case OP_ISUB:
14094                 return OP_X86_SUB_REG_MEMBASE;
14095         case OP_IAND:
14096                 return OP_X86_AND_REG_MEMBASE;
14097         case OP_IOR:
14098                 return OP_X86_OR_REG_MEMBASE;
14099         case OP_IXOR:
14100                 return OP_X86_XOR_REG_MEMBASE;
14101         }
14102 #endif
14103
14104 #ifdef TARGET_AMD64
14105         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14106                 switch (opcode) {
14107                 case OP_ICOMPARE:
14108                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14109                 case OP_IADD:
14110                         return OP_X86_ADD_REG_MEMBASE;
14111                 case OP_ISUB:
14112                         return OP_X86_SUB_REG_MEMBASE;
14113                 case OP_IAND:
14114                         return OP_X86_AND_REG_MEMBASE;
14115                 case OP_IOR:
14116                         return OP_X86_OR_REG_MEMBASE;
14117                 case OP_IXOR:
14118                         return OP_X86_XOR_REG_MEMBASE;
14119                 }
14120         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14121                 switch (opcode) {
14122                 case OP_COMPARE:
14123                 case OP_LCOMPARE:
14124                         return OP_AMD64_COMPARE_REG_MEMBASE;
14125                 case OP_LADD:
14126                         return OP_AMD64_ADD_REG_MEMBASE;
14127                 case OP_LSUB:
14128                         return OP_AMD64_SUB_REG_MEMBASE;
14129                 case OP_LAND:
14130                         return OP_AMD64_AND_REG_MEMBASE;
14131                 case OP_LOR:
14132                         return OP_AMD64_OR_REG_MEMBASE;
14133                 case OP_LXOR:
14134                         return OP_AMD64_XOR_REG_MEMBASE;
14135                 }
14136         }
14137 #endif
14138
14139         return -1;
14140 }
14141
14142 int
14143 mono_op_to_op_imm_noemul (int opcode)
14144 {
14145         switch (opcode) {
14146 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14147         case OP_LSHR:
14148         case OP_LSHL:
14149         case OP_LSHR_UN:
14150                 return -1;
14151 #endif
14152 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14153         case OP_IDIV:
14154         case OP_IDIV_UN:
14155         case OP_IREM:
14156         case OP_IREM_UN:
14157                 return -1;
14158 #endif
14159 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14160         case OP_IMUL:
14161                 return -1;
14162 #endif
14163         default:
14164                 return mono_op_to_op_imm (opcode);
14165         }
14166 }
14167
14168 /**
14169  * mono_handle_global_vregs:
14170  *
14171  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14172  * for them.
14173  */
14174 void
14175 mono_handle_global_vregs (MonoCompile *cfg)
14176 {
14177         gint32 *vreg_to_bb;
14178         MonoBasicBlock *bb;
14179         int i, pos;
14180
14181         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14182
14183 #ifdef MONO_ARCH_SIMD_INTRINSICS
14184         if (cfg->uses_simd_intrinsics)
14185                 mono_simd_simplify_indirection (cfg);
14186 #endif
14187
14188         /* Find local vregs used in more than one bb */
14189         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14190                 MonoInst *ins = bb->code;
14191                 int block_num = bb->block_num;
14192
14193                 if (cfg->verbose_level > 2)
14194                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14195
14196                 cfg->cbb = bb;
14197                 for (; ins; ins = ins->next) {
14198                         const char *spec = INS_INFO (ins->opcode);
14199                         int regtype = 0, regindex;
14200                         gint32 prev_bb;
14201
14202                         if (G_UNLIKELY (cfg->verbose_level > 2))
14203                                 mono_print_ins (ins);
14204
14205                         g_assert (ins->opcode >= MONO_CEE_LAST);
14206
14207                         for (regindex = 0; regindex < 4; regindex ++) {
14208                                 int vreg = 0;
14209
14210                                 if (regindex == 0) {
14211                                         regtype = spec [MONO_INST_DEST];
14212                                         if (regtype == ' ')
14213                                                 continue;
14214                                         vreg = ins->dreg;
14215                                 } else if (regindex == 1) {
14216                                         regtype = spec [MONO_INST_SRC1];
14217                                         if (regtype == ' ')
14218                                                 continue;
14219                                         vreg = ins->sreg1;
14220                                 } else if (regindex == 2) {
14221                                         regtype = spec [MONO_INST_SRC2];
14222                                         if (regtype == ' ')
14223                                                 continue;
14224                                         vreg = ins->sreg2;
14225                                 } else if (regindex == 3) {
14226                                         regtype = spec [MONO_INST_SRC3];
14227                                         if (regtype == ' ')
14228                                                 continue;
14229                                         vreg = ins->sreg3;
14230                                 }
14231
14232 #if SIZEOF_REGISTER == 4
14233                                 /* In the LLVM case, the long opcodes are not decomposed */
14234                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14235                                         /*
14236                                          * Since some instructions reference the original long vreg,
14237                                          * and some reference the two component vregs, it is quite hard
14238                                          * to determine when it needs to be global. So be conservative.
14239                                          */
14240                                         if (!get_vreg_to_inst (cfg, vreg)) {
14241                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14242
14243                                                 if (cfg->verbose_level > 2)
14244                                                         printf ("LONG VREG R%d made global.\n", vreg);
14245                                         }
14246
14247                                         /*
14248                                          * Make the component vregs volatile since the optimizations can
14249                                          * get confused otherwise.
14250                                          */
14251                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14252                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14253                                 }
14254 #endif
14255
14256                                 g_assert (vreg != -1);
14257
14258                                 prev_bb = vreg_to_bb [vreg];
14259                                 if (prev_bb == 0) {
14260                                         /* 0 is a valid block num */
14261                                         vreg_to_bb [vreg] = block_num + 1;
14262                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14263                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14264                                                 continue;
14265
14266                                         if (!get_vreg_to_inst (cfg, vreg)) {
14267                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14268                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14269
14270                                                 switch (regtype) {
14271                                                 case 'i':
14272                                                         if (vreg_is_ref (cfg, vreg))
14273                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14274                                                         else
14275                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14276                                                         break;
14277                                                 case 'l':
14278                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14279                                                         break;
14280                                                 case 'f':
14281                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14282                                                         break;
14283                                                 case 'v':
14284                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14285                                                         break;
14286                                                 default:
14287                                                         g_assert_not_reached ();
14288                                                 }
14289                                         }
14290
14291                                         /* Flag as having been used in more than one bb */
14292                                         vreg_to_bb [vreg] = -1;
14293                                 }
14294                         }
14295                 }
14296         }
14297
14298         /* If a variable is used in only one bblock, convert it into a local vreg */
14299         for (i = 0; i < cfg->num_varinfo; i++) {
14300                 MonoInst *var = cfg->varinfo [i];
14301                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14302
14303                 switch (var->type) {
14304                 case STACK_I4:
14305                 case STACK_OBJ:
14306                 case STACK_PTR:
14307                 case STACK_MP:
14308                 case STACK_VTYPE:
14309 #if SIZEOF_REGISTER == 8
14310                 case STACK_I8:
14311 #endif
14312 #if !defined(TARGET_X86)
14313                 /* Enabling this screws up the fp stack on x86 */
14314                 case STACK_R8:
14315 #endif
14316                         if (mono_arch_is_soft_float ())
14317                                 break;
14318
14319                         /*
14320                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14321                                 break;
14322                         */
14323
14324                         /* Arguments are implicitly global */
14325                         /* Putting R4 vars into registers doesn't work currently */
14326                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14327                         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) {
14328                                 /*
14329                                  * Make that the variable's liveness interval doesn't contain a call, since
14330                                  * that would cause the lvreg to be spilled, making the whole optimization
14331                                  * useless.
14332                                  */
14333                                 /* This is too slow for JIT compilation */
14334 #if 0
14335                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14336                                         MonoInst *ins;
14337                                         int def_index, call_index, ins_index;
14338                                         gboolean spilled = FALSE;
14339
14340                                         def_index = -1;
14341                                         call_index = -1;
14342                                         ins_index = 0;
14343                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14344                                                 const char *spec = INS_INFO (ins->opcode);
14345
14346                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14347                                                         def_index = ins_index;
14348
14349                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14350                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14351                                                         if (call_index > def_index) {
14352                                                                 spilled = TRUE;
14353                                                                 break;
14354                                                         }
14355                                                 }
14356
14357                                                 if (MONO_IS_CALL (ins))
14358                                                         call_index = ins_index;
14359
14360                                                 ins_index ++;
14361                                         }
14362
14363                                         if (spilled)
14364                                                 break;
14365                                 }
14366 #endif
14367
14368                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14369                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14370                                 var->flags |= MONO_INST_IS_DEAD;
14371                                 cfg->vreg_to_inst [var->dreg] = NULL;
14372                         }
14373                         break;
14374                 }
14375         }
14376
14377         /*
14378          * Compress the varinfo and vars tables so the liveness computation is faster and
14379          * takes up less space.
14380          */
14381         pos = 0;
14382         for (i = 0; i < cfg->num_varinfo; ++i) {
14383                 MonoInst *var = cfg->varinfo [i];
14384                 if (pos < i && cfg->locals_start == i)
14385                         cfg->locals_start = pos;
14386                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14387                         if (pos < i) {
14388                                 cfg->varinfo [pos] = cfg->varinfo [i];
14389                                 cfg->varinfo [pos]->inst_c0 = pos;
14390                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14391                                 cfg->vars [pos].idx = pos;
14392 #if SIZEOF_REGISTER == 4
14393                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14394                                         /* Modify the two component vars too */
14395                                         MonoInst *var1;
14396
14397                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14398                                         var1->inst_c0 = pos;
14399                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14400                                         var1->inst_c0 = pos;
14401                                 }
14402 #endif
14403                         }
14404                         pos ++;
14405                 }
14406         }
14407         cfg->num_varinfo = pos;
14408         if (cfg->locals_start > cfg->num_varinfo)
14409                 cfg->locals_start = cfg->num_varinfo;
14410 }
14411
14412 /*
14413  * mono_allocate_gsharedvt_vars:
14414  *
14415  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14416  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14417  */
14418 void
14419 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14420 {
14421         int i;
14422
14423         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14424
14425         for (i = 0; i < cfg->num_varinfo; ++i) {
14426                 MonoInst *ins = cfg->varinfo [i];
14427                 int idx;
14428
14429                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14430                         if (i >= cfg->locals_start) {
14431                                 /* Local */
14432                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14433                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14434                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14435                                 ins->inst_imm = idx;
14436                         } else {
14437                                 /* Arg */
14438                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14439                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14440                         }
14441                 }
14442         }
14443 }
14444
14445 /**
14446  * mono_spill_global_vars:
14447  *
14448  *   Generate spill code for variables which are not allocated to registers,
14449  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14450  * code is generated which could be optimized by the local optimization passes.
14451  */
14452 void
14453 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14454 {
14455         MonoBasicBlock *bb;
14456         char spec2 [16];
14457         int orig_next_vreg;
14458         guint32 *vreg_to_lvreg;
14459         guint32 *lvregs;
14460         guint32 i, lvregs_len;
14461         gboolean dest_has_lvreg = FALSE;
14462         MonoStackType stacktypes [128];
14463         MonoInst **live_range_start, **live_range_end;
14464         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14465
14466         *need_local_opts = FALSE;
14467
14468         memset (spec2, 0, sizeof (spec2));
14469
14470         /* FIXME: Move this function to mini.c */
14471         stacktypes ['i'] = STACK_PTR;
14472         stacktypes ['l'] = STACK_I8;
14473         stacktypes ['f'] = STACK_R8;
14474 #ifdef MONO_ARCH_SIMD_INTRINSICS
14475         stacktypes ['x'] = STACK_VTYPE;
14476 #endif
14477
14478 #if SIZEOF_REGISTER == 4
14479         /* Create MonoInsts for longs */
14480         for (i = 0; i < cfg->num_varinfo; i++) {
14481                 MonoInst *ins = cfg->varinfo [i];
14482
14483                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14484                         switch (ins->type) {
14485                         case STACK_R8:
14486                         case STACK_I8: {
14487                                 MonoInst *tree;
14488
14489                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14490                                         break;
14491
14492                                 g_assert (ins->opcode == OP_REGOFFSET);
14493
14494                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14495                                 g_assert (tree);
14496                                 tree->opcode = OP_REGOFFSET;
14497                                 tree->inst_basereg = ins->inst_basereg;
14498                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14499
14500                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (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_MS_WORD_OFFSET;
14505                                 break;
14506                         }
14507                         default:
14508                                 break;
14509                         }
14510                 }
14511         }
14512 #endif
14513
14514         if (cfg->compute_gc_maps) {
14515                 /* registers need liveness info even for !non refs */
14516                 for (i = 0; i < cfg->num_varinfo; i++) {
14517                         MonoInst *ins = cfg->varinfo [i];
14518
14519                         if (ins->opcode == OP_REGVAR)
14520                                 ins->flags |= MONO_INST_GC_TRACK;
14521                 }
14522         }
14523
14524         /* FIXME: widening and truncation */
14525
14526         /*
14527          * As an optimization, when a variable allocated to the stack is first loaded into
14528          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14529          * the variable again.
14530          */
14531         orig_next_vreg = cfg->next_vreg;
14532         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14533         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14534         lvregs_len = 0;
14535
14536         /*
14537          * These arrays contain the first and last instructions accessing a given
14538          * variable.
14539          * Since we emit bblocks in the same order we process them here, and we
14540          * don't split live ranges, these will precisely describe the live range of
14541          * the variable, i.e. the instruction range where a valid value can be found
14542          * in the variables location.
14543          * The live range is computed using the liveness info computed by the liveness pass.
14544          * We can't use vmv->range, since that is an abstract live range, and we need
14545          * one which is instruction precise.
14546          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14547          */
14548         /* FIXME: Only do this if debugging info is requested */
14549         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14550         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14551         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14552         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14553
14554         /* Add spill loads/stores */
14555         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14556                 MonoInst *ins;
14557
14558                 if (cfg->verbose_level > 2)
14559                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14560
14561                 /* Clear vreg_to_lvreg array */
14562                 for (i = 0; i < lvregs_len; i++)
14563                         vreg_to_lvreg [lvregs [i]] = 0;
14564                 lvregs_len = 0;
14565
14566                 cfg->cbb = bb;
14567                 MONO_BB_FOR_EACH_INS (bb, ins) {
14568                         const char *spec = INS_INFO (ins->opcode);
14569                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14570                         gboolean store, no_lvreg;
14571                         int sregs [MONO_MAX_SRC_REGS];
14572
14573                         if (G_UNLIKELY (cfg->verbose_level > 2))
14574                                 mono_print_ins (ins);
14575
14576                         if (ins->opcode == OP_NOP)
14577                                 continue;
14578
14579                         /*
14580                          * We handle LDADDR here as well, since it can only be decomposed
14581                          * when variable addresses are known.
14582                          */
14583                         if (ins->opcode == OP_LDADDR) {
14584                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14585
14586                                 if (var->opcode == OP_VTARG_ADDR) {
14587                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14588                                         MonoInst *vtaddr = var->inst_left;
14589                                         if (vtaddr->opcode == OP_REGVAR) {
14590                                                 ins->opcode = OP_MOVE;
14591                                                 ins->sreg1 = vtaddr->dreg;
14592                                         }
14593                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14594                                                 ins->opcode = OP_LOAD_MEMBASE;
14595                                                 ins->inst_basereg = vtaddr->inst_basereg;
14596                                                 ins->inst_offset = vtaddr->inst_offset;
14597                                         } else
14598                                                 NOT_IMPLEMENTED;
14599                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14600                                         /* gsharedvt arg passed by ref */
14601                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14602
14603                                         ins->opcode = OP_LOAD_MEMBASE;
14604                                         ins->inst_basereg = var->inst_basereg;
14605                                         ins->inst_offset = var->inst_offset;
14606                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14607                                         MonoInst *load, *load2, *load3;
14608                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14609                                         int reg1, reg2, reg3;
14610                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14611                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14612
14613                                         /*
14614                                          * gsharedvt local.
14615                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14616                                          */
14617
14618                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14619
14620                                         g_assert (info_var);
14621                                         g_assert (locals_var);
14622
14623                                         /* Mark the instruction used to compute the locals var as used */
14624                                         cfg->gsharedvt_locals_var_ins = NULL;
14625
14626                                         /* Load the offset */
14627                                         if (info_var->opcode == OP_REGOFFSET) {
14628                                                 reg1 = alloc_ireg (cfg);
14629                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14630                                         } else if (info_var->opcode == OP_REGVAR) {
14631                                                 load = NULL;
14632                                                 reg1 = info_var->dreg;
14633                                         } else {
14634                                                 g_assert_not_reached ();
14635                                         }
14636                                         reg2 = alloc_ireg (cfg);
14637                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14638                                         /* Load the locals area address */
14639                                         reg3 = alloc_ireg (cfg);
14640                                         if (locals_var->opcode == OP_REGOFFSET) {
14641                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14642                                         } else if (locals_var->opcode == OP_REGVAR) {
14643                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14644                                         } else {
14645                                                 g_assert_not_reached ();
14646                                         }
14647                                         /* Compute the address */
14648                                         ins->opcode = OP_PADD;
14649                                         ins->sreg1 = reg3;
14650                                         ins->sreg2 = reg2;
14651
14652                                         mono_bblock_insert_before_ins (bb, ins, load3);
14653                                         mono_bblock_insert_before_ins (bb, load3, load2);
14654                                         if (load)
14655                                                 mono_bblock_insert_before_ins (bb, load2, load);
14656                                 } else {
14657                                         g_assert (var->opcode == OP_REGOFFSET);
14658
14659                                         ins->opcode = OP_ADD_IMM;
14660                                         ins->sreg1 = var->inst_basereg;
14661                                         ins->inst_imm = var->inst_offset;
14662                                 }
14663
14664                                 *need_local_opts = TRUE;
14665                                 spec = INS_INFO (ins->opcode);
14666                         }
14667
14668                         if (ins->opcode < MONO_CEE_LAST) {
14669                                 mono_print_ins (ins);
14670                                 g_assert_not_reached ();
14671                         }
14672
14673                         /*
14674                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14675                          * src register.
14676                          * FIXME:
14677                          */
14678                         if (MONO_IS_STORE_MEMBASE (ins)) {
14679                                 tmp_reg = ins->dreg;
14680                                 ins->dreg = ins->sreg2;
14681                                 ins->sreg2 = tmp_reg;
14682                                 store = TRUE;
14683
14684                                 spec2 [MONO_INST_DEST] = ' ';
14685                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14686                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14687                                 spec2 [MONO_INST_SRC3] = ' ';
14688                                 spec = spec2;
14689                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14690                                 g_assert_not_reached ();
14691                         else
14692                                 store = FALSE;
14693                         no_lvreg = FALSE;
14694
14695                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14696                                 printf ("\t %.3s %d", spec, ins->dreg);
14697                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14698                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14699                                         printf (" %d", sregs [srcindex]);
14700                                 printf ("\n");
14701                         }
14702
14703                         /***************/
14704                         /*    DREG     */
14705                         /***************/
14706                         regtype = spec [MONO_INST_DEST];
14707                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14708                         prev_dreg = -1;
14709
14710                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14711                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14712                                 MonoInst *store_ins;
14713                                 int store_opcode;
14714                                 MonoInst *def_ins = ins;
14715                                 int dreg = ins->dreg; /* The original vreg */
14716
14717                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14718
14719                                 if (var->opcode == OP_REGVAR) {
14720                                         ins->dreg = var->dreg;
14721                                 } 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)) {
14722                                         /*
14723                                          * Instead of emitting a load+store, use a _membase opcode.
14724                                          */
14725                                         g_assert (var->opcode == OP_REGOFFSET);
14726                                         if (ins->opcode == OP_MOVE) {
14727                                                 NULLIFY_INS (ins);
14728                                                 def_ins = NULL;
14729                                         } else {
14730                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14731                                                 ins->inst_basereg = var->inst_basereg;
14732                                                 ins->inst_offset = var->inst_offset;
14733                                                 ins->dreg = -1;
14734                                         }
14735                                         spec = INS_INFO (ins->opcode);
14736                                 } else {
14737                                         guint32 lvreg;
14738
14739                                         g_assert (var->opcode == OP_REGOFFSET);
14740
14741                                         prev_dreg = ins->dreg;
14742
14743                                         /* Invalidate any previous lvreg for this vreg */
14744                                         vreg_to_lvreg [ins->dreg] = 0;
14745
14746                                         lvreg = 0;
14747
14748                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14749                                                 regtype = 'l';
14750                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14751                                         }
14752
14753                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14754
14755 #if SIZEOF_REGISTER != 8
14756                                         if (regtype == 'l') {
14757                                                 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));
14758                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14759                                                 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));
14760                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14761                                                 def_ins = store_ins;
14762                                         }
14763                                         else
14764 #endif
14765                                         {
14766                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14767
14768                                                 /* Try to fuse the store into the instruction itself */
14769                                                 /* FIXME: Add more instructions */
14770                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14771                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14772                                                         ins->inst_imm = ins->inst_c0;
14773                                                         ins->inst_destbasereg = var->inst_basereg;
14774                                                         ins->inst_offset = var->inst_offset;
14775                                                         spec = INS_INFO (ins->opcode);
14776                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14777                                                         ins->opcode = store_opcode;
14778                                                         ins->inst_destbasereg = var->inst_basereg;
14779                                                         ins->inst_offset = var->inst_offset;
14780
14781                                                         no_lvreg = TRUE;
14782
14783                                                         tmp_reg = ins->dreg;
14784                                                         ins->dreg = ins->sreg2;
14785                                                         ins->sreg2 = tmp_reg;
14786                                                         store = TRUE;
14787
14788                                                         spec2 [MONO_INST_DEST] = ' ';
14789                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14790                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14791                                                         spec2 [MONO_INST_SRC3] = ' ';
14792                                                         spec = spec2;
14793                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14794                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14795                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14796                                                         ins->dreg = -1;
14797                                                         ins->inst_basereg = var->inst_basereg;
14798                                                         ins->inst_offset = var->inst_offset;
14799                                                         spec = INS_INFO (ins->opcode);
14800                                                 } else {
14801                                                         /* printf ("INS: "); mono_print_ins (ins); */
14802                                                         /* Create a store instruction */
14803                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14804
14805                                                         /* Insert it after the instruction */
14806                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14807
14808                                                         def_ins = store_ins;
14809
14810                                                         /*
14811                                                          * We can't assign ins->dreg to var->dreg here, since the
14812                                                          * sregs could use it. So set a flag, and do it after
14813                                                          * the sregs.
14814                                                          */
14815                                                         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)))
14816                                                                 dest_has_lvreg = TRUE;
14817                                                 }
14818                                         }
14819                                 }
14820
14821                                 if (def_ins && !live_range_start [dreg]) {
14822                                         live_range_start [dreg] = def_ins;
14823                                         live_range_start_bb [dreg] = bb;
14824                                 }
14825
14826                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14827                                         MonoInst *tmp;
14828
14829                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14830                                         tmp->inst_c1 = dreg;
14831                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14832                                 }
14833                         }
14834
14835                         /************/
14836                         /*  SREGS   */
14837                         /************/
14838                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14839                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14840                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14841                                 sreg = sregs [srcindex];
14842
14843                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14844                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14845                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14846                                         MonoInst *use_ins = ins;
14847                                         MonoInst *load_ins;
14848                                         guint32 load_opcode;
14849
14850                                         if (var->opcode == OP_REGVAR) {
14851                                                 sregs [srcindex] = var->dreg;
14852                                                 //mono_inst_set_src_registers (ins, sregs);
14853                                                 live_range_end [sreg] = use_ins;
14854                                                 live_range_end_bb [sreg] = bb;
14855
14856                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14857                                                         MonoInst *tmp;
14858
14859                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14860                                                         /* var->dreg is a hreg */
14861                                                         tmp->inst_c1 = sreg;
14862                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14863                                                 }
14864
14865                                                 continue;
14866                                         }
14867
14868                                         g_assert (var->opcode == OP_REGOFFSET);
14869
14870                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14871
14872                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14873
14874                                         if (vreg_to_lvreg [sreg]) {
14875                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14876
14877                                                 /* The variable is already loaded to an lvreg */
14878                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14879                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14880                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14881                                                 //mono_inst_set_src_registers (ins, sregs);
14882                                                 continue;
14883                                         }
14884
14885                                         /* Try to fuse the load into the instruction */
14886                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14887                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14888                                                 sregs [0] = var->inst_basereg;
14889                                                 //mono_inst_set_src_registers (ins, sregs);
14890                                                 ins->inst_offset = var->inst_offset;
14891                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14892                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14893                                                 sregs [1] = var->inst_basereg;
14894                                                 //mono_inst_set_src_registers (ins, sregs);
14895                                                 ins->inst_offset = var->inst_offset;
14896                                         } else {
14897                                                 if (MONO_IS_REAL_MOVE (ins)) {
14898                                                         ins->opcode = OP_NOP;
14899                                                         sreg = ins->dreg;
14900                                                 } else {
14901                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14902
14903                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14904
14905                                                         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) {
14906                                                                 if (var->dreg == prev_dreg) {
14907                                                                         /*
14908                                                                          * sreg refers to the value loaded by the load
14909                                                                          * emitted below, but we need to use ins->dreg
14910                                                                          * since it refers to the store emitted earlier.
14911                                                                          */
14912                                                                         sreg = ins->dreg;
14913                                                                 }
14914                                                                 g_assert (sreg != -1);
14915                                                                 vreg_to_lvreg [var->dreg] = sreg;
14916                                                                 g_assert (lvregs_len < 1024);
14917                                                                 lvregs [lvregs_len ++] = var->dreg;
14918                                                         }
14919                                                 }
14920
14921                                                 sregs [srcindex] = sreg;
14922                                                 //mono_inst_set_src_registers (ins, sregs);
14923
14924 #if SIZEOF_REGISTER != 8
14925                                                 if (regtype == 'l') {
14926                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14927                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14928                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14929                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14930                                                         use_ins = load_ins;
14931                                                 }
14932                                                 else
14933 #endif
14934                                                 {
14935 #if SIZEOF_REGISTER == 4
14936                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14937 #endif
14938                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14939                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14940                                                         use_ins = load_ins;
14941                                                 }
14942                                         }
14943
14944                                         if (var->dreg < orig_next_vreg) {
14945                                                 live_range_end [var->dreg] = use_ins;
14946                                                 live_range_end_bb [var->dreg] = bb;
14947                                         }
14948
14949                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14950                                                 MonoInst *tmp;
14951
14952                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14953                                                 tmp->inst_c1 = var->dreg;
14954                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14955                                         }
14956                                 }
14957                         }
14958                         mono_inst_set_src_registers (ins, sregs);
14959
14960                         if (dest_has_lvreg) {
14961                                 g_assert (ins->dreg != -1);
14962                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14963                                 g_assert (lvregs_len < 1024);
14964                                 lvregs [lvregs_len ++] = prev_dreg;
14965                                 dest_has_lvreg = FALSE;
14966                         }
14967
14968                         if (store) {
14969                                 tmp_reg = ins->dreg;
14970                                 ins->dreg = ins->sreg2;
14971                                 ins->sreg2 = tmp_reg;
14972                         }
14973
14974                         if (MONO_IS_CALL (ins)) {
14975                                 /* Clear vreg_to_lvreg array */
14976                                 for (i = 0; i < lvregs_len; i++)
14977                                         vreg_to_lvreg [lvregs [i]] = 0;
14978                                 lvregs_len = 0;
14979                         } else if (ins->opcode == OP_NOP) {
14980                                 ins->dreg = -1;
14981                                 MONO_INST_NULLIFY_SREGS (ins);
14982                         }
14983
14984                         if (cfg->verbose_level > 2)
14985                                 mono_print_ins_index (1, ins);
14986                 }
14987
14988                 /* Extend the live range based on the liveness info */
14989                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14990                         for (i = 0; i < cfg->num_varinfo; i ++) {
14991                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14992
14993                                 if (vreg_is_volatile (cfg, vi->vreg))
14994                                         /* The liveness info is incomplete */
14995                                         continue;
14996
14997                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14998                                         /* Live from at least the first ins of this bb */
14999                                         live_range_start [vi->vreg] = bb->code;
15000                                         live_range_start_bb [vi->vreg] = bb;
15001                                 }
15002
15003                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
15004                                         /* Live at least until the last ins of this bb */
15005                                         live_range_end [vi->vreg] = bb->last_ins;
15006                                         live_range_end_bb [vi->vreg] = bb;
15007                                 }
15008                         }
15009                 }
15010         }
15011
15012         /*
15013          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
15014          * by storing the current native offset into MonoMethodVar->live_range_start/end.
15015          */
15016         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15017                 for (i = 0; i < cfg->num_varinfo; ++i) {
15018                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15019                         MonoInst *ins;
15020
15021                         if (live_range_start [vreg]) {
15022                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15023                                 ins->inst_c0 = i;
15024                                 ins->inst_c1 = vreg;
15025                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15026                         }
15027                         if (live_range_end [vreg]) {
15028                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15029                                 ins->inst_c0 = i;
15030                                 ins->inst_c1 = vreg;
15031                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15032                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15033                                 else
15034                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15035                         }
15036                 }
15037         }
15038
15039         if (cfg->gsharedvt_locals_var_ins) {
15040                 /* Nullify if unused */
15041                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15042                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15043         }
15044
15045         g_free (live_range_start);
15046         g_free (live_range_end);
15047         g_free (live_range_start_bb);
15048         g_free (live_range_end_bb);
15049 }
15050
15051 static void
15052 mono_decompose_typecheck (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
15053 {
15054         MonoInst *ret, *move, *source;
15055         MonoClass *klass = ins->klass;
15056         int context_used = mini_class_check_context_used (cfg, klass);
15057         int is_isinst = ins->opcode == OP_ISINST;
15058         g_assert (is_isinst || ins->opcode == OP_CASTCLASS);
15059         source = get_vreg_to_inst (cfg, ins->sreg1);
15060         if (!source || source == (MonoInst *) -1)
15061                 source = mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, ins->sreg1);
15062         g_assert (source && source != (MonoInst *) -1);
15063
15064         MonoBasicBlock *first_bb;
15065         NEW_BBLOCK (cfg, first_bb);
15066         cfg->cbb = first_bb;
15067
15068         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
15069                 if (is_isinst)
15070                         ret = emit_isinst_with_cache_nonshared (cfg, source, klass);
15071                 else
15072                         ret = emit_castclass_with_cache_nonshared (cfg, source, klass);
15073         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
15074                 MonoInst *iargs [1];
15075                 int costs;
15076
15077                 iargs [0] = source;
15078                 if (is_isinst) {
15079                         MonoMethod *wrapper = mono_marshal_get_isinst (klass);
15080                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15081                 } else {
15082                         MonoMethod *wrapper = mono_marshal_get_castclass (klass);
15083                         save_cast_details (cfg, klass, source->dreg, TRUE);
15084                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15085                         reset_cast_details (cfg);
15086                 }
15087                 g_assert (costs > 0);
15088                 ret = iargs [0];
15089         } else {
15090                 if (is_isinst)
15091                         ret = handle_isinst (cfg, klass, source, context_used);
15092                 else
15093                         ret = handle_castclass (cfg, klass, source, context_used);
15094         }
15095         EMIT_NEW_UNALU (cfg, move, OP_MOVE, ins->dreg, ret->dreg);
15096
15097         g_assert (cfg->cbb->code || first_bb->code);
15098         MonoInst *prev = ins->prev;
15099         mono_replace_ins (cfg, bb, ins, &prev, first_bb, cfg->cbb);
15100 }
15101
15102 void
15103 mono_decompose_typechecks (MonoCompile *cfg)
15104 {
15105         for (MonoBasicBlock *bb = cfg->bb_entry; bb; bb = bb->next_bb) {
15106                 MonoInst *ins;
15107                 MONO_BB_FOR_EACH_INS (bb, ins) {
15108                         switch (ins->opcode) {
15109                         case OP_ISINST:
15110                         case OP_CASTCLASS:
15111                                 mono_decompose_typecheck (cfg, bb, ins);
15112                                 break;
15113                         }
15114                 }
15115         }
15116 }
15117
15118
15119 /**
15120  * FIXME:
15121  * - use 'iadd' instead of 'int_add'
15122  * - handling ovf opcodes: decompose in method_to_ir.
15123  * - unify iregs/fregs
15124  *   -> partly done, the missing parts are:
15125  *   - a more complete unification would involve unifying the hregs as well, so
15126  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15127  *     would no longer map to the machine hregs, so the code generators would need to
15128  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15129  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15130  *     fp/non-fp branches speeds it up by about 15%.
15131  * - use sext/zext opcodes instead of shifts
15132  * - add OP_ICALL
15133  * - get rid of TEMPLOADs if possible and use vregs instead
15134  * - clean up usage of OP_P/OP_ opcodes
15135  * - cleanup usage of DUMMY_USE
15136  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15137  *   stack
15138  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15139  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15140  * - make sure handle_stack_args () is called before the branch is emitted
15141  * - when the new IR is done, get rid of all unused stuff
15142  * - COMPARE/BEQ as separate instructions or unify them ?
15143  *   - keeping them separate allows specialized compare instructions like
15144  *     compare_imm, compare_membase
15145  *   - most back ends unify fp compare+branch, fp compare+ceq
15146  * - integrate mono_save_args into inline_method
15147  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15148  * - handle long shift opts on 32 bit platforms somehow: they require
15149  *   3 sregs (2 for arg1 and 1 for arg2)
15150  * - make byref a 'normal' type.
15151  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15152  *   variable if needed.
15153  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15154  *   like inline_method.
15155  * - remove inlining restrictions
15156  * - fix LNEG and enable cfold of INEG
15157  * - generalize x86 optimizations like ldelema as a peephole optimization
15158  * - add store_mem_imm for amd64
15159  * - optimize the loading of the interruption flag in the managed->native wrappers
15160  * - avoid special handling of OP_NOP in passes
15161  * - move code inserting instructions into one function/macro.
15162  * - try a coalescing phase after liveness analysis
15163  * - add float -> vreg conversion + local optimizations on !x86
15164  * - figure out how to handle decomposed branches during optimizations, ie.
15165  *   compare+branch, op_jump_table+op_br etc.
15166  * - promote RuntimeXHandles to vregs
15167  * - vtype cleanups:
15168  *   - add a NEW_VARLOADA_VREG macro
15169  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15170  *   accessing vtype fields.
15171  * - get rid of I8CONST on 64 bit platforms
15172  * - dealing with the increase in code size due to branches created during opcode
15173  *   decomposition:
15174  *   - use extended basic blocks
15175  *     - all parts of the JIT
15176  *     - handle_global_vregs () && local regalloc
15177  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15178  * - sources of increase in code size:
15179  *   - vtypes
15180  *   - long compares
15181  *   - isinst and castclass
15182  *   - lvregs not allocated to global registers even if used multiple times
15183  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15184  *   meaningful.
15185  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15186  * - add all micro optimizations from the old JIT
15187  * - put tree optimizations into the deadce pass
15188  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15189  *   specific function.
15190  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15191  *   fcompare + branchCC.
15192  * - create a helper function for allocating a stack slot, taking into account
15193  *   MONO_CFG_HAS_SPILLUP.
15194  * - merge r68207.
15195  * - merge the ia64 switch changes.
15196  * - optimize mono_regstate2_alloc_int/float.
15197  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15198  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15199  *   parts of the tree could be separated by other instructions, killing the tree
15200  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15201  *   instructions if the result of the load is used multiple times ?
15202  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15203  * - LAST MERGE: 108395.
15204  * - when returning vtypes in registers, generate IR and append it to the end of the
15205  *   last bb instead of doing it in the epilog.
15206  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15207  */
15208
15209 /*
15210
15211 NOTES
15212 -----
15213
15214 - When to decompose opcodes:
15215   - earlier: this makes some optimizations hard to implement, since the low level IR
15216   no longer contains the neccessary information. But it is easier to do.
15217   - later: harder to implement, enables more optimizations.
15218 - Branches inside bblocks:
15219   - created when decomposing complex opcodes.
15220     - branches to another bblock: harmless, but not tracked by the branch
15221       optimizations, so need to branch to a label at the start of the bblock.
15222     - branches to inside the same bblock: very problematic, trips up the local
15223       reg allocator. Can be fixed by spitting the current bblock, but that is a
15224       complex operation, since some local vregs can become global vregs etc.
15225 - Local/global vregs:
15226   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15227     local register allocator.
15228   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15229     structure, created by mono_create_var (). Assigned to hregs or the stack by
15230     the global register allocator.
15231 - When to do optimizations like alu->alu_imm:
15232   - earlier -> saves work later on since the IR will be smaller/simpler
15233   - later -> can work on more instructions
15234 - Handling of valuetypes:
15235   - When a vtype is pushed on the stack, a new temporary is created, an
15236     instruction computing its address (LDADDR) is emitted and pushed on
15237     the stack. Need to optimize cases when the vtype is used immediately as in
15238     argument passing, stloc etc.
15239 - Instead of the to_end stuff in the old JIT, simply call the function handling
15240   the values on the stack before emitting the last instruction of the bb.
15241 */
15242
15243 #endif /* DISABLE_JIT */