mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 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);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         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);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, 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         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, 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         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         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
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         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
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         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
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         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
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         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
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         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
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         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
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var || cfg->llvm_only)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static void
1768 emit_instrumentation_call (MonoCompile *cfg, void *func, gboolean entry)
1769 {
1770         MonoInst *iargs [1];
1771
1772         /*
1773          * Avoid instrumenting inlined methods since it can
1774          * distort profiling results.
1775          */
1776         if (cfg->method != cfg->current_method)
1777                 return;
1778
1779         if (mono_profiler_should_instrument_method (cfg->method, entry)) {
1780                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1781                 mono_emit_jit_icall (cfg, func, iargs);
1782         }
1783 }
1784
1785 static int
1786 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1787 {
1788 handle_enum:
1789         type = mini_get_underlying_type (type);
1790         switch (type->type) {
1791         case MONO_TYPE_VOID:
1792                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1793         case MONO_TYPE_I1:
1794         case MONO_TYPE_U1:
1795         case MONO_TYPE_I2:
1796         case MONO_TYPE_U2:
1797         case MONO_TYPE_I4:
1798         case MONO_TYPE_U4:
1799                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1800         case MONO_TYPE_I:
1801         case MONO_TYPE_U:
1802         case MONO_TYPE_PTR:
1803         case MONO_TYPE_FNPTR:
1804                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1805         case MONO_TYPE_CLASS:
1806         case MONO_TYPE_STRING:
1807         case MONO_TYPE_OBJECT:
1808         case MONO_TYPE_SZARRAY:
1809         case MONO_TYPE_ARRAY:
1810                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1811         case MONO_TYPE_I8:
1812         case MONO_TYPE_U8:
1813                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1814         case MONO_TYPE_R4:
1815                 if (cfg->r4fp)
1816                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1817                 else
1818                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1819         case MONO_TYPE_R8:
1820                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1821         case MONO_TYPE_VALUETYPE:
1822                 if (type->data.klass->enumtype) {
1823                         type = mono_class_enum_basetype (type->data.klass);
1824                         goto handle_enum;
1825                 } else
1826                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1827         case MONO_TYPE_TYPEDBYREF:
1828                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1829         case MONO_TYPE_GENERICINST:
1830                 type = &type->data.generic_class->container_class->byval_arg;
1831                 goto handle_enum;
1832         case MONO_TYPE_VAR:
1833         case MONO_TYPE_MVAR:
1834                 /* gsharedvt */
1835                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1836         default:
1837                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1838         }
1839         return -1;
1840 }
1841
1842 //XXX this ignores if t is byref
1843 #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)))))
1844
1845 /*
1846  * target_type_is_incompatible:
1847  * @cfg: MonoCompile context
1848  *
1849  * Check that the item @arg on the evaluation stack can be stored
1850  * in the target type (can be a local, or field, etc).
1851  * The cfg arg can be used to check if we need verification or just
1852  * validity checks.
1853  *
1854  * Returns: non-0 value if arg can't be stored on a target.
1855  */
1856 static int
1857 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1858 {
1859         MonoType *simple_type;
1860         MonoClass *klass;
1861
1862         if (target->byref) {
1863                 /* FIXME: check that the pointed to types match */
1864                 if (arg->type == STACK_MP) {
1865                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1866                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1867                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1868
1869                         /* if the target is native int& or same type */
1870                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1871                                 return 0;
1872
1873                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1874                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1875                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1876                                 return 0;
1877                         return 1;
1878                 }
1879                 if (arg->type == STACK_PTR)
1880                         return 0;
1881                 return 1;
1882         }
1883
1884         simple_type = mini_get_underlying_type (target);
1885         switch (simple_type->type) {
1886         case MONO_TYPE_VOID:
1887                 return 1;
1888         case MONO_TYPE_I1:
1889         case MONO_TYPE_U1:
1890         case MONO_TYPE_I2:
1891         case MONO_TYPE_U2:
1892         case MONO_TYPE_I4:
1893         case MONO_TYPE_U4:
1894                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1895                         return 1;
1896                 return 0;
1897         case MONO_TYPE_PTR:
1898                 /* STACK_MP is needed when setting pinned locals */
1899                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1900                         return 1;
1901                 return 0;
1902         case MONO_TYPE_I:
1903         case MONO_TYPE_U:
1904         case MONO_TYPE_FNPTR:
1905                 /*
1906                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1907                  * in native int. (#688008).
1908                  */
1909                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_CLASS:
1913         case MONO_TYPE_STRING:
1914         case MONO_TYPE_OBJECT:
1915         case MONO_TYPE_SZARRAY:
1916         case MONO_TYPE_ARRAY:
1917                 if (arg->type != STACK_OBJ)
1918                         return 1;
1919                 /* FIXME: check type compatibility */
1920                 return 0;
1921         case MONO_TYPE_I8:
1922         case MONO_TYPE_U8:
1923                 if (arg->type != STACK_I8)
1924                         return 1;
1925                 return 0;
1926         case MONO_TYPE_R4:
1927                 if (arg->type != cfg->r4_stack_type)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_R8:
1931                 if (arg->type != STACK_R8)
1932                         return 1;
1933                 return 0;
1934         case MONO_TYPE_VALUETYPE:
1935                 if (arg->type != STACK_VTYPE)
1936                         return 1;
1937                 klass = mono_class_from_mono_type (simple_type);
1938                 if (klass != arg->klass)
1939                         return 1;
1940                 return 0;
1941         case MONO_TYPE_TYPEDBYREF:
1942                 if (arg->type != STACK_VTYPE)
1943                         return 1;
1944                 klass = mono_class_from_mono_type (simple_type);
1945                 if (klass != arg->klass)
1946                         return 1;
1947                 return 0;
1948         case MONO_TYPE_GENERICINST:
1949                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1950                         MonoClass *target_class;
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                         klass = mono_class_from_mono_type (simple_type);
1954                         target_class = mono_class_from_mono_type (target);
1955                         /* The second cases is needed when doing partial sharing */
1956                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1957                                 return 1;
1958                         return 0;
1959                 } else {
1960                         if (arg->type != STACK_OBJ)
1961                                 return 1;
1962                         /* FIXME: check type compatibility */
1963                         return 0;
1964                 }
1965         case MONO_TYPE_VAR:
1966         case MONO_TYPE_MVAR:
1967                 g_assert (cfg->gshared);
1968                 if (mini_type_var_is_vt (simple_type)) {
1969                         if (arg->type != STACK_VTYPE)
1970                                 return 1;
1971                 } else {
1972                         if (arg->type != STACK_OBJ)
1973                                 return 1;
1974                 }
1975                 return 0;
1976         default:
1977                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1978         }
1979         return 1;
1980 }
1981
1982 /*
1983  * Prepare arguments for passing to a function call.
1984  * Return a non-zero value if the arguments can't be passed to the given
1985  * signature.
1986  * The type checks are not yet complete and some conversions may need
1987  * casts on 32 or 64 bit architectures.
1988  *
1989  * FIXME: implement this using target_type_is_incompatible ()
1990  */
1991 static int
1992 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1993 {
1994         MonoType *simple_type;
1995         int i;
1996
1997         if (sig->hasthis) {
1998                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1999                         return 1;
2000                 args++;
2001         }
2002         for (i = 0; i < sig->param_count; ++i) {
2003                 if (sig->params [i]->byref) {
2004                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2005                                 return 1;
2006                         continue;
2007                 }
2008                 simple_type = mini_get_underlying_type (sig->params [i]);
2009 handle_enum:
2010                 switch (simple_type->type) {
2011                 case MONO_TYPE_VOID:
2012                         return 1;
2013                         continue;
2014                 case MONO_TYPE_I1:
2015                 case MONO_TYPE_U1:
2016                 case MONO_TYPE_I2:
2017                 case MONO_TYPE_U2:
2018                 case MONO_TYPE_I4:
2019                 case MONO_TYPE_U4:
2020                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2021                                 return 1;
2022                         continue;
2023                 case MONO_TYPE_I:
2024                 case MONO_TYPE_U:
2025                 case MONO_TYPE_PTR:
2026                 case MONO_TYPE_FNPTR:
2027                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_CLASS:
2031                 case MONO_TYPE_STRING:
2032                 case MONO_TYPE_OBJECT:
2033                 case MONO_TYPE_SZARRAY:
2034                 case MONO_TYPE_ARRAY:
2035                         if (args [i]->type != STACK_OBJ)
2036                                 return 1;
2037                         continue;
2038                 case MONO_TYPE_I8:
2039                 case MONO_TYPE_U8:
2040                         if (args [i]->type != STACK_I8)
2041                                 return 1;
2042                         continue;
2043                 case MONO_TYPE_R4:
2044                         if (args [i]->type != cfg->r4_stack_type)
2045                                 return 1;
2046                         continue;
2047                 case MONO_TYPE_R8:
2048                         if (args [i]->type != STACK_R8)
2049                                 return 1;
2050                         continue;
2051                 case MONO_TYPE_VALUETYPE:
2052                         if (simple_type->data.klass->enumtype) {
2053                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2054                                 goto handle_enum;
2055                         }
2056                         if (args [i]->type != STACK_VTYPE)
2057                                 return 1;
2058                         continue;
2059                 case MONO_TYPE_TYPEDBYREF:
2060                         if (args [i]->type != STACK_VTYPE)
2061                                 return 1;
2062                         continue;
2063                 case MONO_TYPE_GENERICINST:
2064                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2065                         goto handle_enum;
2066                 case MONO_TYPE_VAR:
2067                 case MONO_TYPE_MVAR:
2068                         /* gsharedvt */
2069                         if (args [i]->type != STACK_VTYPE)
2070                                 return 1;
2071                         continue;
2072                 default:
2073                         g_error ("unknown type 0x%02x in check_call_signature",
2074                                  simple_type->type);
2075                 }
2076         }
2077         return 0;
2078 }
2079
2080 static int
2081 callvirt_to_call (int opcode)
2082 {
2083         switch (opcode) {
2084         case OP_CALL_MEMBASE:
2085                 return OP_CALL;
2086         case OP_VOIDCALL_MEMBASE:
2087                 return OP_VOIDCALL;
2088         case OP_FCALL_MEMBASE:
2089                 return OP_FCALL;
2090         case OP_RCALL_MEMBASE:
2091                 return OP_RCALL;
2092         case OP_VCALL_MEMBASE:
2093                 return OP_VCALL;
2094         case OP_LCALL_MEMBASE:
2095                 return OP_LCALL;
2096         default:
2097                 g_assert_not_reached ();
2098         }
2099
2100         return -1;
2101 }
2102
2103 static int
2104 callvirt_to_call_reg (int opcode)
2105 {
2106         switch (opcode) {
2107         case OP_CALL_MEMBASE:
2108                 return OP_CALL_REG;
2109         case OP_VOIDCALL_MEMBASE:
2110                 return OP_VOIDCALL_REG;
2111         case OP_FCALL_MEMBASE:
2112                 return OP_FCALL_REG;
2113         case OP_RCALL_MEMBASE:
2114                 return OP_RCALL_REG;
2115         case OP_VCALL_MEMBASE:
2116                 return OP_VCALL_REG;
2117         case OP_LCALL_MEMBASE:
2118                 return OP_LCALL_REG;
2119         default:
2120                 g_assert_not_reached ();
2121         }
2122
2123         return -1;
2124 }
2125
2126 /* Either METHOD or IMT_ARG needs to be set */
2127 static void
2128 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2129 {
2130         int method_reg;
2131
2132         if (COMPILE_LLVM (cfg)) {
2133                 if (imt_arg) {
2134                         method_reg = alloc_preg (cfg);
2135                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2136                 } else {
2137                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2138                         method_reg = ins->dreg;
2139                 }
2140
2141 #ifdef ENABLE_LLVM
2142                 call->imt_arg_reg = method_reg;
2143 #endif
2144                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2145                 return;
2146         }
2147
2148         if (imt_arg) {
2149                 method_reg = alloc_preg (cfg);
2150                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2151         } else {
2152                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2153                 method_reg = ins->dreg;
2154         }
2155
2156         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2157 }
2158
2159 static MonoJumpInfo *
2160 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2161 {
2162         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2163
2164         ji->ip.i = ip;
2165         ji->type = type;
2166         ji->data.target = target;
2167
2168         return ji;
2169 }
2170
2171 int
2172 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2173 {
2174         if (cfg->gshared)
2175                 return mono_class_check_context_used (klass);
2176         else
2177                 return 0;
2178 }
2179
2180 static int
2181 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2182 {
2183         if (cfg->gshared)
2184                 return mono_method_check_context_used (method);
2185         else
2186                 return 0;
2187 }
2188
2189 /*
2190  * check_method_sharing:
2191  *
2192  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2193  */
2194 static void
2195 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2196 {
2197         gboolean pass_vtable = FALSE;
2198         gboolean pass_mrgctx = FALSE;
2199
2200         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2201                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2202                 gboolean sharable = FALSE;
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2205                         sharable = TRUE;
2206
2207                 /*
2208                  * Pass vtable iff target method might
2209                  * be shared, which means that sharing
2210                  * is enabled for its class and its
2211                  * context is sharable (and it's not a
2212                  * generic method).
2213                  */
2214                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2215                         pass_vtable = TRUE;
2216         }
2217
2218         if (mini_method_get_context (cmethod) &&
2219                 mini_method_get_context (cmethod)->method_inst) {
2220                 g_assert (!pass_vtable);
2221
2222                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2223                         pass_mrgctx = TRUE;
2224                 } else {
2225                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2226                                 pass_mrgctx = TRUE;
2227                 }
2228         }
2229
2230         if (out_pass_vtable)
2231                 *out_pass_vtable = pass_vtable;
2232         if (out_pass_mrgctx)
2233                 *out_pass_mrgctx = pass_mrgctx;
2234 }
2235
2236 inline static MonoCallInst *
2237 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2238                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2239 {
2240         MonoType *sig_ret;
2241         MonoCallInst *call;
2242 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2243         int i;
2244 #endif
2245
2246         if (cfg->llvm_only)
2247                 tail = FALSE;
2248
2249         if (tail) {
2250                 emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
2251
2252                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2253         } else
2254                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2255
2256         call->args = args;
2257         call->signature = sig;
2258         call->rgctx_reg = rgctx;
2259         sig_ret = mini_get_underlying_type (sig->ret);
2260
2261         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2262
2263         if (tail) {
2264                 if (mini_type_is_vtype (sig_ret)) {
2265                         call->vret_var = cfg->vret_addr;
2266                         //g_assert_not_reached ();
2267                 }
2268         } else if (mini_type_is_vtype (sig_ret)) {
2269                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2270                 MonoInst *loada;
2271
2272                 temp->backend.is_pinvoke = sig->pinvoke;
2273
2274                 /*
2275                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2276                  * address of return value to increase optimization opportunities.
2277                  * Before vtype decomposition, the dreg of the call ins itself represents the
2278                  * fact the call modifies the return value. After decomposition, the call will
2279                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2280                  * will be transformed into an LDADDR.
2281                  */
2282                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2283                 loada->dreg = alloc_preg (cfg);
2284                 loada->inst_p0 = temp;
2285                 /* We reference the call too since call->dreg could change during optimization */
2286                 loada->inst_p1 = call;
2287                 MONO_ADD_INS (cfg->cbb, loada);
2288
2289                 call->inst.dreg = temp->dreg;
2290
2291                 call->vret_var = loada;
2292         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2293                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2294
2295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2296         if (COMPILE_SOFT_FLOAT (cfg)) {
2297                 /*
2298                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2299                  * an icall, but that cannot be done during the call sequence since it would clobber
2300                  * the call registers + the stack. So we do it before emitting the call.
2301                  */
2302                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2303                         MonoType *t;
2304                         MonoInst *in = call->args [i];
2305
2306                         if (i >= sig->hasthis)
2307                                 t = sig->params [i - sig->hasthis];
2308                         else
2309                                 t = &mono_defaults.int_class->byval_arg;
2310                         t = mono_type_get_underlying_type (t);
2311
2312                         if (!t->byref && t->type == MONO_TYPE_R4) {
2313                                 MonoInst *iargs [1];
2314                                 MonoInst *conv;
2315
2316                                 iargs [0] = in;
2317                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2318
2319                                 /* The result will be in an int vreg */
2320                                 call->args [i] = conv;
2321                         }
2322                 }
2323         }
2324 #endif
2325
2326         call->need_unbox_trampoline = unbox_trampoline;
2327
2328 #ifdef ENABLE_LLVM
2329         if (COMPILE_LLVM (cfg))
2330                 mono_llvm_emit_call (cfg, call);
2331         else
2332                 mono_arch_emit_call (cfg, call);
2333 #else
2334         mono_arch_emit_call (cfg, call);
2335 #endif
2336
2337         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2338         cfg->flags |= MONO_CFG_HAS_CALLS;
2339
2340         return call;
2341 }
2342
2343 static void
2344 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2345 {
2346         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2347         cfg->uses_rgctx_reg = TRUE;
2348         call->rgctx_reg = TRUE;
2349 #ifdef ENABLE_LLVM
2350         call->rgctx_arg_reg = rgctx_reg;
2351 #endif
2352 }
2353
2354 MonoInst*
2355 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2356 {
2357         MonoCallInst *call;
2358         MonoInst *ins;
2359         int rgctx_reg = -1;
2360         gboolean check_sp = FALSE;
2361
2362         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2363                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2364
2365                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2366                         check_sp = TRUE;
2367         }
2368
2369         if (rgctx_arg) {
2370                 rgctx_reg = mono_alloc_preg (cfg);
2371                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2372         }
2373
2374         if (check_sp) {
2375                 if (!cfg->stack_inbalance_var)
2376                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2377
2378                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2379                 ins->dreg = cfg->stack_inbalance_var->dreg;
2380                 MONO_ADD_INS (cfg->cbb, ins);
2381         }
2382
2383         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2384
2385         call->inst.sreg1 = addr->dreg;
2386
2387         if (imt_arg)
2388                 emit_imt_argument (cfg, call, NULL, imt_arg);
2389
2390         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2391
2392         if (check_sp) {
2393                 int sp_reg;
2394
2395                 sp_reg = mono_alloc_preg (cfg);
2396
2397                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2398                 ins->dreg = sp_reg;
2399                 MONO_ADD_INS (cfg->cbb, ins);
2400
2401                 /* Restore the stack so we don't crash when throwing the exception */
2402                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2403                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2404                 MONO_ADD_INS (cfg->cbb, ins);
2405
2406                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2407                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2408         }
2409
2410         if (rgctx_arg)
2411                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2412
2413         return (MonoInst*)call;
2414 }
2415
2416 static MonoInst*
2417 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2418
2419 static MonoInst*
2420 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2421                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2422 {
2423 #ifndef DISABLE_REMOTING
2424         gboolean might_be_remote = FALSE;
2425 #endif
2426         gboolean virtual_ = this_ins != NULL;
2427         gboolean enable_for_aot = TRUE;
2428         int context_used;
2429         MonoCallInst *call;
2430         MonoInst *call_target = NULL;
2431         int rgctx_reg = 0;
2432         gboolean need_unbox_trampoline;
2433
2434         if (!sig)
2435                 sig = mono_method_signature (method);
2436
2437         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2438                 g_assert_not_reached ();
2439
2440         if (rgctx_arg) {
2441                 rgctx_reg = mono_alloc_preg (cfg);
2442                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2443         }
2444
2445         if (method->string_ctor) {
2446                 /* Create the real signature */
2447                 /* FIXME: Cache these */
2448                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2449                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2450
2451                 sig = ctor_sig;
2452         }
2453
2454         context_used = mini_method_check_context_used (cfg, method);
2455
2456 #ifndef DISABLE_REMOTING
2457         might_be_remote = this_ins && sig->hasthis &&
2458                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2459                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2460
2461         if (might_be_remote && context_used) {
2462                 MonoInst *addr;
2463
2464                 g_assert (cfg->gshared);
2465
2466                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2467
2468                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2469         }
2470 #endif
2471
2472         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2473                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2474
2475         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2476
2477         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2478
2479 #ifndef DISABLE_REMOTING
2480         if (might_be_remote)
2481                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2482         else
2483 #endif
2484                 call->method = method;
2485         call->inst.flags |= MONO_INST_HAS_METHOD;
2486         call->inst.inst_left = this_ins;
2487         call->tail_call = tail;
2488
2489         if (virtual_) {
2490                 int vtable_reg, slot_reg, this_reg;
2491                 int offset;
2492
2493                 this_reg = this_ins->dreg;
2494
2495                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2496                         MonoInst *dummy_use;
2497
2498                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2499
2500                         /* Make a call to delegate->invoke_impl */
2501                         call->inst.inst_basereg = this_reg;
2502                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2503                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2504
2505                         /* We must emit a dummy use here because the delegate trampoline will
2506                         replace the 'this' argument with the delegate target making this activation
2507                         no longer a root for the delegate.
2508                         This is an issue for delegates that target collectible code such as dynamic
2509                         methods of GC'able assemblies.
2510
2511                         For a test case look into #667921.
2512
2513                         FIXME: a dummy use is not the best way to do it as the local register allocator
2514                         will put it on a caller save register and spil it around the call.
2515                         Ideally, we would either put it on a callee save register or only do the store part.
2516                          */
2517                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2518
2519                         return (MonoInst*)call;
2520                 }
2521
2522                 if ((!cfg->compile_aot || enable_for_aot) &&
2523                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2524                          (MONO_METHOD_IS_FINAL (method) &&
2525                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2526                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2527                         /*
2528                          * the method is not virtual, we just need to ensure this is not null
2529                          * and then we can call the method directly.
2530                          */
2531 #ifndef DISABLE_REMOTING
2532                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2533                                 /*
2534                                  * The check above ensures method is not gshared, this is needed since
2535                                  * gshared methods can't have wrappers.
2536                                  */
2537                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2538                         }
2539 #endif
2540
2541                         if (!method->string_ctor)
2542                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2543
2544                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2545                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2546                         /*
2547                          * the method is virtual, but we can statically dispatch since either
2548                          * it's class or the method itself are sealed.
2549                          * But first we need to ensure it's not a null reference.
2550                          */
2551                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2552
2553                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2554                 } else if (call_target) {
2555                         vtable_reg = alloc_preg (cfg);
2556                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2557
2558                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2559                         call->inst.sreg1 = call_target->dreg;
2560                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2561                 } else {
2562                         vtable_reg = alloc_preg (cfg);
2563                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2564                         if (mono_class_is_interface (method->klass)) {
2565                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2566                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2567                                 slot_reg = vtable_reg;
2568                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2569                         } else {
2570                                 slot_reg = vtable_reg;
2571                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2572                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2573                                 if (imt_arg) {
2574                                         g_assert (mono_method_signature (method)->generic_param_count);
2575                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2576                                 }
2577                         }
2578
2579                         call->inst.sreg1 = slot_reg;
2580                         call->inst.inst_offset = offset;
2581                         call->is_virtual = TRUE;
2582                 }
2583         }
2584
2585         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2586
2587         if (rgctx_arg)
2588                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2589
2590         return (MonoInst*)call;
2591 }
2592
2593 MonoInst*
2594 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2595 {
2596         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2597 }
2598
2599 MonoInst*
2600 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2601                                            MonoInst **args)
2602 {
2603         MonoCallInst *call;
2604
2605         g_assert (sig);
2606
2607         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2608         call->fptr = func;
2609
2610         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2611
2612         return (MonoInst*)call;
2613 }
2614
2615 MonoInst*
2616 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2617 {
2618         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2619
2620         g_assert (info);
2621
2622         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2623 }
2624
2625 /*
2626  * mono_emit_abs_call:
2627  *
2628  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2629  */
2630 inline static MonoInst*
2631 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2632                                         MonoMethodSignature *sig, MonoInst **args)
2633 {
2634         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2635         MonoInst *ins;
2636
2637         /*
2638          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2639          * handle it.
2640          */
2641         if (cfg->abs_patches == NULL)
2642                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2643         g_hash_table_insert (cfg->abs_patches, ji, ji);
2644         ins = mono_emit_native_call (cfg, ji, sig, args);
2645         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2646         return ins;
2647 }
2648
2649 static MonoMethodSignature*
2650 sig_to_rgctx_sig (MonoMethodSignature *sig)
2651 {
2652         // FIXME: memory allocation
2653         MonoMethodSignature *res;
2654         int i;
2655
2656         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2657         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2658         res->param_count = sig->param_count + 1;
2659         for (i = 0; i < sig->param_count; ++i)
2660                 res->params [i] = sig->params [i];
2661         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2662         return res;
2663 }
2664
2665 /* Make an indirect call to FSIG passing an additional argument */
2666 static MonoInst*
2667 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2668 {
2669         MonoMethodSignature *csig;
2670         MonoInst *args_buf [16];
2671         MonoInst **args;
2672         int i, pindex, tmp_reg;
2673
2674         /* Make a call with an rgctx/extra arg */
2675         if (fsig->param_count + 2 < 16)
2676                 args = args_buf;
2677         else
2678                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2679         pindex = 0;
2680         if (fsig->hasthis)
2681                 args [pindex ++] = orig_args [0];
2682         for (i = 0; i < fsig->param_count; ++i)
2683                 args [pindex ++] = orig_args [fsig->hasthis + i];
2684         tmp_reg = alloc_preg (cfg);
2685         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2686         csig = sig_to_rgctx_sig (fsig);
2687         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2688 }
2689
2690 /* Emit an indirect call to the function descriptor ADDR */
2691 static MonoInst*
2692 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2693 {
2694         int addr_reg, arg_reg;
2695         MonoInst *call_target;
2696
2697         g_assert (cfg->llvm_only);
2698
2699         /*
2700          * addr points to a <addr, arg> pair, load both of them, and
2701          * make a call to addr, passing arg as an extra arg.
2702          */
2703         addr_reg = alloc_preg (cfg);
2704         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2705         arg_reg = alloc_preg (cfg);
2706         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2707
2708         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2709 }
2710
2711 static gboolean
2712 direct_icalls_enabled (MonoCompile *cfg)
2713 {
2714         return FALSE;
2715
2716         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2717 #ifdef TARGET_AMD64
2718         if (cfg->compile_llvm && !cfg->llvm_only)
2719                 return FALSE;
2720 #endif
2721         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2722                 return FALSE;
2723         return TRUE;
2724 }
2725
2726 MonoInst*
2727 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2728 {
2729         /*
2730          * Call the jit icall without a wrapper if possible.
2731          * The wrapper is needed for the following reasons:
2732          * - to handle exceptions thrown using mono_raise_exceptions () from the
2733          *   icall function. The EH code needs the lmf frame pushed by the
2734          *   wrapper to be able to unwind back to managed code.
2735          * - to be able to do stack walks for asynchronously suspended
2736          *   threads when debugging.
2737          */
2738         if (info->no_raise && direct_icalls_enabled (cfg)) {
2739                 char *name;
2740                 int costs;
2741
2742                 if (!info->wrapper_method) {
2743                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2744                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2745                         g_free (name);
2746                         mono_memory_barrier ();
2747                 }
2748
2749                 /*
2750                  * Inline the wrapper method, which is basically a call to the C icall, and
2751                  * an exception check.
2752                  */
2753                 costs = inline_method (cfg, info->wrapper_method, NULL,
2754                                                            args, NULL, il_offset, TRUE);
2755                 g_assert (costs > 0);
2756                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2757
2758                 return args [0];
2759         } else {
2760                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2761         }
2762 }
2763
2764 static MonoInst*
2765 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2766 {
2767         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2768                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2769                         int widen_op = -1;
2770
2771                         /*
2772                          * Native code might return non register sized integers
2773                          * without initializing the upper bits.
2774                          */
2775                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2776                         case OP_LOADI1_MEMBASE:
2777                                 widen_op = OP_ICONV_TO_I1;
2778                                 break;
2779                         case OP_LOADU1_MEMBASE:
2780                                 widen_op = OP_ICONV_TO_U1;
2781                                 break;
2782                         case OP_LOADI2_MEMBASE:
2783                                 widen_op = OP_ICONV_TO_I2;
2784                                 break;
2785                         case OP_LOADU2_MEMBASE:
2786                                 widen_op = OP_ICONV_TO_U2;
2787                                 break;
2788                         default:
2789                                 break;
2790                         }
2791
2792                         if (widen_op != -1) {
2793                                 int dreg = alloc_preg (cfg);
2794                                 MonoInst *widen;
2795
2796                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2797                                 widen->type = ins->type;
2798                                 ins = widen;
2799                         }
2800                 }
2801         }
2802
2803         return ins;
2804 }
2805
2806
2807 static void
2808 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2809 {
2810         MonoInst *args [16];
2811
2812         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2813         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2814
2815         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2816 }
2817
2818 MonoMethod*
2819 mini_get_memcpy_method (void)
2820 {
2821         static MonoMethod *memcpy_method = NULL;
2822         if (!memcpy_method) {
2823                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2824                 if (!memcpy_method)
2825                         g_error ("Old corlib found. Install a new one");
2826         }
2827         return memcpy_method;
2828 }
2829
2830 void
2831 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2832 {
2833         int card_table_shift_bits;
2834         gpointer card_table_mask;
2835         guint8 *card_table;
2836         MonoInst *dummy_use;
2837         int nursery_shift_bits;
2838         size_t nursery_size;
2839
2840         if (!cfg->gen_write_barriers)
2841                 return;
2842
2843         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2844
2845         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2846
2847         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2848
2849         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2850                 MonoInst *wbarrier;
2851
2852                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2853                 wbarrier->sreg1 = ptr->dreg;
2854                 wbarrier->sreg2 = value->dreg;
2855                 MONO_ADD_INS (cfg->cbb, wbarrier);
2856         } else if (card_table) {
2857                 int offset_reg = alloc_preg (cfg);
2858                 int card_reg;
2859                 MonoInst *ins;
2860
2861                 /*
2862                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2863                  * collector case, so, for the serial collector, it might slightly slow down nursery
2864                  * collections. We also expect that the host system and the target system have the same card
2865                  * table configuration, which is the case if they have the same pointer size.
2866                  */
2867
2868                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2869                 if (card_table_mask)
2870                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2871
2872                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2873                  * IMM's larger than 32bits.
2874                  */
2875                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2876                 card_reg = ins->dreg;
2877
2878                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2879                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2880         } else {
2881                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2882                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2883         }
2884
2885         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2886 }
2887
2888 MonoMethod*
2889 mini_get_memset_method (void)
2890 {
2891         static MonoMethod *memset_method = NULL;
2892         if (!memset_method) {
2893                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2894                 if (!memset_method)
2895                         g_error ("Old corlib found. Install a new one");
2896         }
2897         return memset_method;
2898 }
2899
2900 void
2901 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2902 {
2903         MonoInst *iargs [3];
2904         int n;
2905         guint32 align;
2906         MonoMethod *memset_method;
2907         MonoInst *size_ins = NULL;
2908         MonoInst *bzero_ins = NULL;
2909         static MonoMethod *bzero_method;
2910
2911         /* FIXME: Optimize this for the case when dest is an LDADDR */
2912         mono_class_init (klass);
2913         if (mini_is_gsharedvt_klass (klass)) {
2914                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2915                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2916                 if (!bzero_method)
2917                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2918                 g_assert (bzero_method);
2919                 iargs [0] = dest;
2920                 iargs [1] = size_ins;
2921                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2922                 return;
2923         }
2924
2925         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2926
2927         n = mono_class_value_size (klass, &align);
2928
2929         if (n <= sizeof (gpointer) * 8) {
2930                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2931         }
2932         else {
2933                 memset_method = mini_get_memset_method ();
2934                 iargs [0] = dest;
2935                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2936                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2937                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2938         }
2939 }
2940
2941 /*
2942  * emit_get_rgctx:
2943  *
2944  *   Emit IR to return either the this pointer for instance method,
2945  * or the mrgctx for static methods.
2946  */
2947 static MonoInst*
2948 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2949 {
2950         MonoInst *this_ins = NULL;
2951
2952         g_assert (cfg->gshared);
2953
2954         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2955                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2956                 !method->klass->valuetype)
2957                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2958
2959         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2960                 MonoInst *mrgctx_loc, *mrgctx_var;
2961
2962                 g_assert (!this_ins);
2963                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2964
2965                 mrgctx_loc = mono_get_vtable_var (cfg);
2966                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2967
2968                 return mrgctx_var;
2969         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2970                 MonoInst *mrgctx_loc, *mrgctx_var;
2971
2972                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2973                 mrgctx_loc = mono_get_vtable_var (cfg);
2974                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2975
2976                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2977
2978                 return mrgctx_var;
2979         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2980                 MonoInst *vtable_loc, *vtable_var;
2981
2982                 g_assert (!this_ins);
2983
2984                 vtable_loc = mono_get_vtable_var (cfg);
2985                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2986
2987                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2988                         MonoInst *mrgctx_var = vtable_var;
2989                         int vtable_reg;
2990
2991                         vtable_reg = alloc_preg (cfg);
2992                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2993                         vtable_var->type = STACK_PTR;
2994                 }
2995
2996                 return vtable_var;
2997         } else {
2998                 MonoInst *ins;
2999                 int vtable_reg;
3000
3001                 vtable_reg = alloc_preg (cfg);
3002                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3003                 return ins;
3004         }
3005 }
3006
3007 static MonoJumpInfoRgctxEntry *
3008 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3009 {
3010         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3011         res->method = method;
3012         res->in_mrgctx = in_mrgctx;
3013         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3014         res->data->type = patch_type;
3015         res->data->data.target = patch_data;
3016         res->info_type = info_type;
3017
3018         return res;
3019 }
3020
3021 static inline MonoInst*
3022 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3023 {
3024         MonoInst *args [16];
3025         MonoInst *call;
3026
3027         // FIXME: No fastpath since the slot is not a compile time constant
3028         args [0] = rgctx;
3029         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3030         if (entry->in_mrgctx)
3031                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3032         else
3033                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3034         return call;
3035 #if 0
3036         /*
3037          * FIXME: This can be called during decompose, which is a problem since it creates
3038          * new bblocks.
3039          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3040          */
3041         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3042         gboolean mrgctx;
3043         MonoBasicBlock *is_null_bb, *end_bb;
3044         MonoInst *res, *ins, *call;
3045         MonoInst *args[16];
3046
3047         slot = mini_get_rgctx_entry_slot (entry);
3048
3049         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3050         index = MONO_RGCTX_SLOT_INDEX (slot);
3051         if (mrgctx)
3052                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3053         for (depth = 0; ; ++depth) {
3054                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3055
3056                 if (index < size - 1)
3057                         break;
3058                 index -= size - 1;
3059         }
3060
3061         NEW_BBLOCK (cfg, end_bb);
3062         NEW_BBLOCK (cfg, is_null_bb);
3063
3064         if (mrgctx) {
3065                 rgctx_reg = rgctx->dreg;
3066         } else {
3067                 rgctx_reg = alloc_preg (cfg);
3068
3069                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3070                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3071                 NEW_BBLOCK (cfg, is_null_bb);
3072
3073                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3074                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3075         }
3076
3077         for (i = 0; i < depth; ++i) {
3078                 int array_reg = alloc_preg (cfg);
3079
3080                 /* load ptr to next array */
3081                 if (mrgctx && i == 0)
3082                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3083                 else
3084                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3085                 rgctx_reg = array_reg;
3086                 /* is the ptr null? */
3087                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3088                 /* if yes, jump to actual trampoline */
3089                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3090         }
3091
3092         /* fetch slot */
3093         val_reg = alloc_preg (cfg);
3094         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3095         /* is the slot null? */
3096         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3097         /* if yes, jump to actual trampoline */
3098         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3099
3100         /* Fastpath */
3101         res_reg = alloc_preg (cfg);
3102         MONO_INST_NEW (cfg, ins, OP_MOVE);
3103         ins->dreg = res_reg;
3104         ins->sreg1 = val_reg;
3105         MONO_ADD_INS (cfg->cbb, ins);
3106         res = ins;
3107         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3108
3109         /* Slowpath */
3110         MONO_START_BB (cfg, is_null_bb);
3111         args [0] = rgctx;
3112         EMIT_NEW_ICONST (cfg, args [1], index);
3113         if (mrgctx)
3114                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3115         else
3116                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3117         MONO_INST_NEW (cfg, ins, OP_MOVE);
3118         ins->dreg = res_reg;
3119         ins->sreg1 = call->dreg;
3120         MONO_ADD_INS (cfg->cbb, ins);
3121         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3122
3123         MONO_START_BB (cfg, end_bb);
3124
3125         return res;
3126 #endif
3127 }
3128
3129 /*
3130  * emit_rgctx_fetch:
3131  *
3132  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3133  * given by RGCTX.
3134  */
3135 static inline MonoInst*
3136 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3137 {
3138         if (cfg->llvm_only)
3139                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3140         else
3141                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3142 }
3143
3144 MonoInst*
3145 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3146                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3147 {
3148         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3149         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3150
3151         return emit_rgctx_fetch (cfg, rgctx, entry);
3152 }
3153
3154 static MonoInst*
3155 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3156                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3157 {
3158         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3159         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3160
3161         return emit_rgctx_fetch (cfg, rgctx, entry);
3162 }
3163
3164 static MonoInst*
3165 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3166                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3167 {
3168         MonoJumpInfoGSharedVtCall *call_info;
3169         MonoJumpInfoRgctxEntry *entry;
3170         MonoInst *rgctx;
3171
3172         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3173         call_info->sig = sig;
3174         call_info->method = cmethod;
3175
3176         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3177         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3178
3179         return emit_rgctx_fetch (cfg, rgctx, entry);
3180 }
3181
3182 /*
3183  * emit_get_rgctx_virt_method:
3184  *
3185  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3186  */
3187 static MonoInst*
3188 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3189                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3190 {
3191         MonoJumpInfoVirtMethod *info;
3192         MonoJumpInfoRgctxEntry *entry;
3193         MonoInst *rgctx;
3194
3195         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3196         info->klass = klass;
3197         info->method = virt_method;
3198
3199         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3200         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3201
3202         return emit_rgctx_fetch (cfg, rgctx, entry);
3203 }
3204
3205 static MonoInst*
3206 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3207                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3208 {
3209         MonoJumpInfoRgctxEntry *entry;
3210         MonoInst *rgctx;
3211
3212         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3213         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3214
3215         return emit_rgctx_fetch (cfg, rgctx, entry);
3216 }
3217
3218 /*
3219  * emit_get_rgctx_method:
3220  *
3221  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3222  * normal constants, else emit a load from the rgctx.
3223  */
3224 static MonoInst*
3225 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3226                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3227 {
3228         if (!context_used) {
3229                 MonoInst *ins;
3230
3231                 switch (rgctx_type) {
3232                 case MONO_RGCTX_INFO_METHOD:
3233                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3234                         return ins;
3235                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3236                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3237                         return ins;
3238                 default:
3239                         g_assert_not_reached ();
3240                 }
3241         } else {
3242                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3243                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3244
3245                 return emit_rgctx_fetch (cfg, rgctx, entry);
3246         }
3247 }
3248
3249 static MonoInst*
3250 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3251                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3252 {
3253         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3254         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3255
3256         return emit_rgctx_fetch (cfg, rgctx, entry);
3257 }
3258
3259 static int
3260 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3261 {
3262         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3263         MonoRuntimeGenericContextInfoTemplate *template_;
3264         int i, idx;
3265
3266         g_assert (info);
3267
3268         for (i = 0; i < info->num_entries; ++i) {
3269                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3270
3271                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3272                         return i;
3273         }
3274
3275         if (info->num_entries == info->count_entries) {
3276                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3277                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3278
3279                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3280
3281                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3282                 info->entries = new_entries;
3283                 info->count_entries = new_count_entries;
3284         }
3285
3286         idx = info->num_entries;
3287         template_ = &info->entries [idx];
3288         template_->info_type = rgctx_type;
3289         template_->data = data;
3290
3291         info->num_entries ++;
3292
3293         return idx;
3294 }
3295
3296 /*
3297  * emit_get_gsharedvt_info:
3298  *
3299  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3300  */
3301 static MonoInst*
3302 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3303 {
3304         MonoInst *ins;
3305         int idx, dreg;
3306
3307         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3308         /* Load info->entries [idx] */
3309         dreg = alloc_preg (cfg);
3310         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3311
3312         return ins;
3313 }
3314
3315 MonoInst*
3316 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3317 {
3318         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3319 }
3320
3321 /*
3322  * On return the caller must check @klass for load errors.
3323  */
3324 static void
3325 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3326 {
3327         MonoInst *vtable_arg;
3328         int context_used;
3329
3330         context_used = mini_class_check_context_used (cfg, klass);
3331
3332         if (context_used) {
3333                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3334                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3335         } else {
3336                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3337
3338                 if (!vtable)
3339                         return;
3340                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3341         }
3342
3343         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3344                 MonoInst *ins;
3345
3346                 /*
3347                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3348                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3349                  */
3350                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3351                 ins->sreg1 = vtable_arg->dreg;
3352                 MONO_ADD_INS (cfg->cbb, ins);
3353         } else {
3354                 int inited_reg;
3355                 MonoBasicBlock *inited_bb;
3356                 MonoInst *args [16];
3357
3358                 inited_reg = alloc_ireg (cfg);
3359
3360                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3361
3362                 NEW_BBLOCK (cfg, inited_bb);
3363
3364                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3365                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3366
3367                 args [0] = vtable_arg;
3368                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3369
3370                 MONO_START_BB (cfg, inited_bb);
3371         }
3372 }
3373
3374 static void
3375 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3376 {
3377         MonoInst *ins;
3378
3379         if (cfg->gen_seq_points && cfg->method == method) {
3380                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3381                 if (nonempty_stack)
3382                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3383                 MONO_ADD_INS (cfg->cbb, ins);
3384         }
3385 }
3386
3387 void
3388 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3389 {
3390         if (mini_get_debug_options ()->better_cast_details) {
3391                 int vtable_reg = alloc_preg (cfg);
3392                 int klass_reg = alloc_preg (cfg);
3393                 MonoBasicBlock *is_null_bb = NULL;
3394                 MonoInst *tls_get;
3395                 int to_klass_reg, context_used;
3396
3397                 if (null_check) {
3398                         NEW_BBLOCK (cfg, is_null_bb);
3399
3400                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3401                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3402                 }
3403
3404                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3405                 if (!tls_get) {
3406                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3407                         exit (1);
3408                 }
3409
3410                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3411                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3412
3413                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3414
3415                 context_used = mini_class_check_context_used (cfg, klass);
3416                 if (context_used) {
3417                         MonoInst *class_ins;
3418
3419                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3420                         to_klass_reg = class_ins->dreg;
3421                 } else {
3422                         to_klass_reg = alloc_preg (cfg);
3423                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3424                 }
3425                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3426
3427                 if (null_check)
3428                         MONO_START_BB (cfg, is_null_bb);
3429         }
3430 }
3431
3432 void
3433 mini_reset_cast_details (MonoCompile *cfg)
3434 {
3435         /* Reset the variables holding the cast details */
3436         if (mini_get_debug_options ()->better_cast_details) {
3437                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3438                 /* It is enough to reset the from field */
3439                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3440         }
3441 }
3442
3443 /*
3444  * On return the caller must check @array_class for load errors
3445  */
3446 static void
3447 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3448 {
3449         int vtable_reg = alloc_preg (cfg);
3450         int context_used;
3451
3452         context_used = mini_class_check_context_used (cfg, array_class);
3453
3454         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3455
3456         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3457
3458         if (cfg->opt & MONO_OPT_SHARED) {
3459                 int class_reg = alloc_preg (cfg);
3460                 MonoInst *ins;
3461
3462                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3463                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3464                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3465         } else if (context_used) {
3466                 MonoInst *vtable_ins;
3467
3468                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3469                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3470         } else {
3471                 if (cfg->compile_aot) {
3472                         int vt_reg;
3473                         MonoVTable *vtable;
3474
3475                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3476                                 return;
3477                         vt_reg = alloc_preg (cfg);
3478                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3479                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3480                 } else {
3481                         MonoVTable *vtable;
3482                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3483                                 return;
3484                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3485                 }
3486         }
3487
3488         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3489
3490         mini_reset_cast_details (cfg);
3491 }
3492
3493 /**
3494  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3495  * generic code is generated.
3496  */
3497 static MonoInst*
3498 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3499 {
3500         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3501
3502         if (context_used) {
3503                 MonoInst *rgctx, *addr;
3504
3505                 /* FIXME: What if the class is shared?  We might not
3506                    have to get the address of the method from the
3507                    RGCTX. */
3508                 addr = emit_get_rgctx_method (cfg, context_used, method,
3509                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3510                 if (cfg->llvm_only) {
3511                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3512                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3513                 } else {
3514                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3515
3516                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3517                 }
3518         } else {
3519                 gboolean pass_vtable, pass_mrgctx;
3520                 MonoInst *rgctx_arg = NULL;
3521
3522                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3523                 g_assert (!pass_mrgctx);
3524
3525                 if (pass_vtable) {
3526                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3527
3528                         g_assert (vtable);
3529                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3530                 }
3531
3532                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3533         }
3534 }
3535
3536 static MonoInst*
3537 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3538 {
3539         MonoInst *add;
3540         int obj_reg;
3541         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3542         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3543         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3544         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3545
3546         obj_reg = sp [0]->dreg;
3547         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3549
3550         /* FIXME: generics */
3551         g_assert (klass->rank == 0);
3552
3553         // Check rank == 0
3554         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3555         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3556
3557         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3558         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3559
3560         if (context_used) {
3561                 MonoInst *element_class;
3562
3563                 /* This assertion is from the unboxcast insn */
3564                 g_assert (klass->rank == 0);
3565
3566                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3567                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3568
3569                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3570                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3571         } else {
3572                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3573                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3574                 mini_reset_cast_details (cfg);
3575         }
3576
3577         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3578         MONO_ADD_INS (cfg->cbb, add);
3579         add->type = STACK_MP;
3580         add->klass = klass;
3581
3582         return add;
3583 }
3584
3585 static MonoInst*
3586 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3587 {
3588         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3589         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3590         MonoInst *ins;
3591         int dreg, addr_reg;
3592
3593         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3594
3595         /* obj */
3596         args [0] = obj;
3597
3598         /* klass */
3599         args [1] = klass_inst;
3600
3601         /* CASTCLASS */
3602         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3603
3604         NEW_BBLOCK (cfg, is_ref_bb);
3605         NEW_BBLOCK (cfg, is_nullable_bb);
3606         NEW_BBLOCK (cfg, end_bb);
3607         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3608         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3609         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3610
3611         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3612         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3613
3614         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3615         addr_reg = alloc_dreg (cfg, STACK_MP);
3616
3617         /* Non-ref case */
3618         /* UNBOX */
3619         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3620         MONO_ADD_INS (cfg->cbb, addr);
3621
3622         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3623
3624         /* Ref case */
3625         MONO_START_BB (cfg, is_ref_bb);
3626
3627         /* Save the ref to a temporary */
3628         dreg = alloc_ireg (cfg);
3629         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3630         addr->dreg = addr_reg;
3631         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3632         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3633
3634         /* Nullable case */
3635         MONO_START_BB (cfg, is_nullable_bb);
3636
3637         {
3638                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3639                 MonoInst *unbox_call;
3640                 MonoMethodSignature *unbox_sig;
3641
3642                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3643                 unbox_sig->ret = &klass->byval_arg;
3644                 unbox_sig->param_count = 1;
3645                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3646
3647                 if (cfg->llvm_only)
3648                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3649                 else
3650                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3651
3652                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3653                 addr->dreg = addr_reg;
3654         }
3655
3656         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3657
3658         /* End */
3659         MONO_START_BB (cfg, end_bb);
3660
3661         /* LDOBJ */
3662         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3663
3664         return ins;
3665 }
3666
3667 /*
3668  * Returns NULL and set the cfg exception on error.
3669  */
3670 static MonoInst*
3671 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3672 {
3673         MonoInst *iargs [2];
3674         void *alloc_ftn;
3675
3676         if (context_used) {
3677                 MonoInst *data;
3678                 MonoRgctxInfoType rgctx_info;
3679                 MonoInst *iargs [2];
3680                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3681
3682                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3683
3684                 if (cfg->opt & MONO_OPT_SHARED)
3685                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3686                 else
3687                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3688                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3689
3690                 if (cfg->opt & MONO_OPT_SHARED) {
3691                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3692                         iargs [1] = data;
3693                         alloc_ftn = ves_icall_object_new;
3694                 } else {
3695                         iargs [0] = data;
3696                         alloc_ftn = ves_icall_object_new_specific;
3697                 }
3698
3699                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3700                         if (known_instance_size) {
3701                                 int size = mono_class_instance_size (klass);
3702                                 if (size < sizeof (MonoObject))
3703                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3704
3705                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3706                         }
3707                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3708                 }
3709
3710                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3711         }
3712
3713         if (cfg->opt & MONO_OPT_SHARED) {
3714                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3715                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3716
3717                 alloc_ftn = ves_icall_object_new;
3718         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3719                 /* This happens often in argument checking code, eg. throw new FooException... */
3720                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3721                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3722                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3723         } else {
3724                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3725                 MonoMethod *managed_alloc = NULL;
3726                 gboolean pass_lw;
3727
3728                 if (!vtable) {
3729                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3730                         cfg->exception_ptr = klass;
3731                         return NULL;
3732                 }
3733
3734                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3735
3736                 if (managed_alloc) {
3737                         int size = mono_class_instance_size (klass);
3738                         if (size < sizeof (MonoObject))
3739                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3740
3741                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3742                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3743                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3744                 }
3745                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3746                 if (pass_lw) {
3747                         guint32 lw = vtable->klass->instance_size;
3748                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3749                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3750                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3751                 }
3752                 else {
3753                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3754                 }
3755         }
3756
3757         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3758 }
3759
3760 /*
3761  * Returns NULL and set the cfg exception on error.
3762  */
3763 static MonoInst*
3764 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3765 {
3766         MonoInst *alloc, *ins;
3767
3768         if (mono_class_is_nullable (klass)) {
3769                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3770
3771                 if (context_used) {
3772                         if (cfg->llvm_only && cfg->gsharedvt) {
3773                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3774                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3775                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3776                         } else {
3777                                 /* FIXME: What if the class is shared?  We might not
3778                                    have to get the method address from the RGCTX. */
3779                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3780                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3781                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3782
3783                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3784                         }
3785                 } else {
3786                         gboolean pass_vtable, pass_mrgctx;
3787                         MonoInst *rgctx_arg = NULL;
3788
3789                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3790                         g_assert (!pass_mrgctx);
3791
3792                         if (pass_vtable) {
3793                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3794
3795                                 g_assert (vtable);
3796                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3797                         }
3798
3799                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3800                 }
3801         }
3802
3803         if (mini_is_gsharedvt_klass (klass)) {
3804                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3805                 MonoInst *res, *is_ref, *src_var, *addr;
3806                 int dreg;
3807
3808                 dreg = alloc_ireg (cfg);
3809
3810                 NEW_BBLOCK (cfg, is_ref_bb);
3811                 NEW_BBLOCK (cfg, is_nullable_bb);
3812                 NEW_BBLOCK (cfg, end_bb);
3813                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3814                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3816
3817                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3818                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3819
3820                 /* Non-ref case */
3821                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3822                 if (!alloc)
3823                         return NULL;
3824                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3825                 ins->opcode = OP_STOREV_MEMBASE;
3826
3827                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3828                 res->type = STACK_OBJ;
3829                 res->klass = klass;
3830                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3831
3832                 /* Ref case */
3833                 MONO_START_BB (cfg, is_ref_bb);
3834
3835                 /* val is a vtype, so has to load the value manually */
3836                 src_var = get_vreg_to_inst (cfg, val->dreg);
3837                 if (!src_var)
3838                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3839                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3840                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3841                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3842
3843                 /* Nullable case */
3844                 MONO_START_BB (cfg, is_nullable_bb);
3845
3846                 {
3847                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3848                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3849                         MonoInst *box_call;
3850                         MonoMethodSignature *box_sig;
3851
3852                         /*
3853                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3854                          * construct that method at JIT time, so have to do things by hand.
3855                          */
3856                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3857                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3858                         box_sig->param_count = 1;
3859                         box_sig->params [0] = &klass->byval_arg;
3860
3861                         if (cfg->llvm_only)
3862                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3863                         else
3864                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3865                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3866                         res->type = STACK_OBJ;
3867                         res->klass = klass;
3868                 }
3869
3870                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3871
3872                 MONO_START_BB (cfg, end_bb);
3873
3874                 return res;
3875         } else {
3876                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3877                 if (!alloc)
3878                         return NULL;
3879
3880                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3881                 return alloc;
3882         }
3883 }
3884
3885 static GHashTable* direct_icall_type_hash;
3886
3887 static gboolean
3888 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3889 {
3890         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3891         if (!direct_icalls_enabled (cfg))
3892                 return FALSE;
3893
3894         /*
3895          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3896          * Whitelist a few icalls for now.
3897          */
3898         if (!direct_icall_type_hash) {
3899                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3900
3901                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3902                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3903                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3904                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3905                 mono_memory_barrier ();
3906                 direct_icall_type_hash = h;
3907         }
3908
3909         if (cmethod->klass == mono_defaults.math_class)
3910                 return TRUE;
3911         /* No locking needed */
3912         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3913                 return TRUE;
3914         return FALSE;
3915 }
3916
3917 static gboolean
3918 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3919 {
3920         if (cmethod->klass == mono_defaults.systemtype_class) {
3921                 if (!strcmp (cmethod->name, "GetType"))
3922                         return TRUE;
3923         }
3924         return FALSE;
3925 }
3926
3927 static G_GNUC_UNUSED MonoInst*
3928 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3929 {
3930         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3931         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3932         gboolean is_i4;
3933
3934         switch (enum_type->type) {
3935         case MONO_TYPE_I8:
3936         case MONO_TYPE_U8:
3937 #if SIZEOF_REGISTER == 8
3938         case MONO_TYPE_I:
3939         case MONO_TYPE_U:
3940 #endif
3941                 is_i4 = FALSE;
3942                 break;
3943         default:
3944                 is_i4 = TRUE;
3945                 break;
3946         }
3947
3948         {
3949                 MonoInst *load, *and_, *cmp, *ceq;
3950                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3951                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3952                 int dest_reg = alloc_ireg (cfg);
3953
3954                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3955                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3956                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3957                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3958
3959                 ceq->type = STACK_I4;
3960
3961                 if (!is_i4) {
3962                         load = mono_decompose_opcode (cfg, load);
3963                         and_ = mono_decompose_opcode (cfg, and_);
3964                         cmp = mono_decompose_opcode (cfg, cmp);
3965                         ceq = mono_decompose_opcode (cfg, ceq);
3966                 }
3967
3968                 return ceq;
3969         }
3970 }
3971
3972 /*
3973  * Returns NULL and set the cfg exception on error.
3974  */
3975 static G_GNUC_UNUSED MonoInst*
3976 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3977 {
3978         MonoInst *ptr;
3979         int dreg;
3980         gpointer trampoline;
3981         MonoInst *obj, *method_ins, *tramp_ins;
3982         MonoDomain *domain;
3983         guint8 **code_slot;
3984
3985         if (virtual_ && !cfg->llvm_only) {
3986                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3987                 g_assert (invoke);
3988
3989                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3990                         return NULL;
3991         }
3992
3993         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3994         if (!obj)
3995                 return NULL;
3996
3997         /* Inline the contents of mono_delegate_ctor */
3998
3999         /* Set target field */
4000         /* Optimize away setting of NULL target */
4001         if (!MONO_INS_IS_PCONST_NULL (target)) {
4002                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4003                 if (cfg->gen_write_barriers) {
4004                         dreg = alloc_preg (cfg);
4005                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4006                         mini_emit_write_barrier (cfg, ptr, target);
4007                 }
4008         }
4009
4010         /* Set method field */
4011         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4012         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4013
4014         /*
4015          * To avoid looking up the compiled code belonging to the target method
4016          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4017          * store it, and we fill it after the method has been compiled.
4018          */
4019         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4020                 MonoInst *code_slot_ins;
4021
4022                 if (context_used) {
4023                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4024                 } else {
4025                         domain = mono_domain_get ();
4026                         mono_domain_lock (domain);
4027                         if (!domain_jit_info (domain)->method_code_hash)
4028                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4029                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4030                         if (!code_slot) {
4031                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4032                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4033                         }
4034                         mono_domain_unlock (domain);
4035
4036                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4037                 }
4038                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4039         }
4040
4041         if (cfg->llvm_only) {
4042                 MonoInst *args [16];
4043
4044                 if (virtual_) {
4045                         args [0] = obj;
4046                         args [1] = target;
4047                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4048                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4049                 } else {
4050                         args [0] = obj;
4051                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4052                 }
4053
4054                 return obj;
4055         }
4056
4057         if (cfg->compile_aot) {
4058                 MonoDelegateClassMethodPair *del_tramp;
4059
4060                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4061                 del_tramp->klass = klass;
4062                 del_tramp->method = context_used ? NULL : method;
4063                 del_tramp->is_virtual = virtual_;
4064                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4065         } else {
4066                 if (virtual_)
4067                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4068                 else
4069                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4070                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4071         }
4072
4073         /* Set invoke_impl field */
4074         if (virtual_) {
4075                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4076         } else {
4077                 dreg = alloc_preg (cfg);
4078                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4079                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4080
4081                 dreg = alloc_preg (cfg);
4082                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4083                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4084         }
4085
4086         dreg = alloc_preg (cfg);
4087         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4088         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4089
4090         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4091
4092         return obj;
4093 }
4094
4095 static MonoInst*
4096 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4097 {
4098         MonoJitICallInfo *info;
4099
4100         /* Need to register the icall so it gets an icall wrapper */
4101         info = mono_get_array_new_va_icall (rank);
4102
4103         cfg->flags |= MONO_CFG_HAS_VARARGS;
4104
4105         /* mono_array_new_va () needs a vararg calling convention */
4106         cfg->exception_message = g_strdup ("array-new");
4107         cfg->disable_llvm = TRUE;
4108
4109         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4110         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4111 }
4112
4113 /*
4114  * handle_constrained_gsharedvt_call:
4115  *
4116  *   Handle constrained calls where the receiver is a gsharedvt type.
4117  * Return the instruction representing the call. Set the cfg exception on failure.
4118  */
4119 static MonoInst*
4120 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4121                                                                    gboolean *ref_emit_widen)
4122 {
4123         MonoInst *ins = NULL;
4124         gboolean emit_widen = *ref_emit_widen;
4125
4126         /*
4127          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4128          * 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
4129          * pack the arguments into an array, and do the rest of the work in in an icall.
4130          */
4131         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4132                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4133                 (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]))))) {
4134                 MonoInst *args [16];
4135
4136                 /*
4137                  * This case handles calls to
4138                  * - object:ToString()/Equals()/GetHashCode(),
4139                  * - System.IComparable<T>:CompareTo()
4140                  * - System.IEquatable<T>:Equals ()
4141                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4142                  */
4143
4144                 args [0] = sp [0];
4145                 if (mono_method_check_context_used (cmethod))
4146                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4147                 else
4148                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4149                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4150
4151                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4152                 if (fsig->hasthis && fsig->param_count) {
4153                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4154                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4155                         ins->dreg = alloc_preg (cfg);
4156                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4157                         MONO_ADD_INS (cfg->cbb, ins);
4158                         args [4] = ins;
4159
4160                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4161                                 int addr_reg, deref_arg_reg;
4162
4163                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4164                                 deref_arg_reg = alloc_preg (cfg);
4165                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4166                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4167
4168                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4169                                 addr_reg = ins->dreg;
4170                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4171                         } else {
4172                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4173                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4174                         }
4175                 } else {
4176                         EMIT_NEW_ICONST (cfg, args [3], 0);
4177                         EMIT_NEW_ICONST (cfg, args [4], 0);
4178                 }
4179                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4180                 emit_widen = FALSE;
4181
4182                 if (mini_is_gsharedvt_type (fsig->ret)) {
4183                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4184                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4185                         MonoInst *add;
4186
4187                         /* Unbox */
4188                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4189                         MONO_ADD_INS (cfg->cbb, add);
4190                         /* Load value */
4191                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4192                         MONO_ADD_INS (cfg->cbb, ins);
4193                         /* ins represents the call result */
4194                 }
4195         } else {
4196                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4197         }
4198
4199         *ref_emit_widen = emit_widen;
4200
4201         return ins;
4202
4203  exception_exit:
4204         return NULL;
4205 }
4206
4207 static void
4208 mono_emit_load_got_addr (MonoCompile *cfg)
4209 {
4210         MonoInst *getaddr, *dummy_use;
4211
4212         if (!cfg->got_var || cfg->got_var_allocated)
4213                 return;
4214
4215         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4216         getaddr->cil_code = cfg->header->code;
4217         getaddr->dreg = cfg->got_var->dreg;
4218
4219         /* Add it to the start of the first bblock */
4220         if (cfg->bb_entry->code) {
4221                 getaddr->next = cfg->bb_entry->code;
4222                 cfg->bb_entry->code = getaddr;
4223         }
4224         else
4225                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4226
4227         cfg->got_var_allocated = TRUE;
4228
4229         /*
4230          * Add a dummy use to keep the got_var alive, since real uses might
4231          * only be generated by the back ends.
4232          * Add it to end_bblock, so the variable's lifetime covers the whole
4233          * method.
4234          * It would be better to make the usage of the got var explicit in all
4235          * cases when the backend needs it (i.e. calls, throw etc.), so this
4236          * wouldn't be needed.
4237          */
4238         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4239         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4240 }
4241
4242 static int inline_limit;
4243 static gboolean inline_limit_inited;
4244
4245 static gboolean
4246 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4247 {
4248         MonoMethodHeaderSummary header;
4249         MonoVTable *vtable;
4250 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4251         MonoMethodSignature *sig = mono_method_signature (method);
4252         int i;
4253 #endif
4254
4255         if (cfg->disable_inline)
4256                 return FALSE;
4257         if (cfg->gsharedvt)
4258                 return FALSE;
4259
4260         if (cfg->inline_depth > 10)
4261                 return FALSE;
4262
4263         if (!mono_method_get_header_summary (method, &header))
4264                 return FALSE;
4265
4266         /*runtime, icall and pinvoke are checked by summary call*/
4267         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4268             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4269             (mono_class_is_marshalbyref (method->klass)) ||
4270             header.has_clauses)
4271                 return FALSE;
4272
4273         /* also consider num_locals? */
4274         /* Do the size check early to avoid creating vtables */
4275         if (!inline_limit_inited) {
4276                 char *inlinelimit;
4277                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4278                         inline_limit = atoi (inlinelimit);
4279                         g_free (inlinelimit);
4280                 } else
4281                         inline_limit = INLINE_LENGTH_LIMIT;
4282                 inline_limit_inited = TRUE;
4283         }
4284         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4285                 return FALSE;
4286
4287         /*
4288          * if we can initialize the class of the method right away, we do,
4289          * otherwise we don't allow inlining if the class needs initialization,
4290          * since it would mean inserting a call to mono_runtime_class_init()
4291          * inside the inlined code
4292          */
4293         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4294                 return FALSE;
4295
4296         if (!(cfg->opt & MONO_OPT_SHARED)) {
4297                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4298                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4299                         if (method->klass->has_cctor) {
4300                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4301                                 if (!vtable)
4302                                         return FALSE;
4303                                 if (!cfg->compile_aot) {
4304                                         MonoError error;
4305                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4306                                                 mono_error_cleanup (&error);
4307                                                 return FALSE;
4308                                         }
4309                                 }
4310                         }
4311                 } else if (mono_class_is_before_field_init (method->klass)) {
4312                         if (cfg->run_cctors && method->klass->has_cctor) {
4313                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4314                                 if (!method->klass->runtime_info)
4315                                         /* No vtable created yet */
4316                                         return FALSE;
4317                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4318                                 if (!vtable)
4319                                         return FALSE;
4320                                 /* This makes so that inline cannot trigger */
4321                                 /* .cctors: too many apps depend on them */
4322                                 /* running with a specific order... */
4323                                 if (! vtable->initialized)
4324                                         return FALSE;
4325                                 MonoError error;
4326                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4327                                         mono_error_cleanup (&error);
4328                                         return FALSE;
4329                                 }
4330                         }
4331                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4332                         if (!method->klass->runtime_info)
4333                                 /* No vtable created yet */
4334                                 return FALSE;
4335                         vtable = mono_class_vtable (cfg->domain, method->klass);
4336                         if (!vtable)
4337                                 return FALSE;
4338                         if (!vtable->initialized)
4339                                 return FALSE;
4340                 }
4341         } else {
4342                 /*
4343                  * If we're compiling for shared code
4344                  * the cctor will need to be run at aot method load time, for example,
4345                  * or at the end of the compilation of the inlining method.
4346                  */
4347                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4348                         return FALSE;
4349         }
4350
4351 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4352         if (mono_arch_is_soft_float ()) {
4353                 /* FIXME: */
4354                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4355                         return FALSE;
4356                 for (i = 0; i < sig->param_count; ++i)
4357                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4358                                 return FALSE;
4359         }
4360 #endif
4361
4362         if (g_list_find (cfg->dont_inline, method))
4363                 return FALSE;
4364
4365         return TRUE;
4366 }
4367
4368 static gboolean
4369 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4370 {
4371         if (!cfg->compile_aot) {
4372                 g_assert (vtable);
4373                 if (vtable->initialized)
4374                         return FALSE;
4375         }
4376
4377         if (mono_class_is_before_field_init (klass)) {
4378                 if (cfg->method == method)
4379                         return FALSE;
4380         }
4381
4382         if (!mono_class_needs_cctor_run (klass, method))
4383                 return FALSE;
4384
4385         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4386                 /* The initialization is already done before the method is called */
4387                 return FALSE;
4388
4389         return TRUE;
4390 }
4391
4392 MonoInst*
4393 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4394 {
4395         MonoInst *ins;
4396         guint32 size;
4397         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4398         int context_used;
4399
4400         if (mini_is_gsharedvt_variable_klass (klass)) {
4401                 size = -1;
4402         } else {
4403                 mono_class_init (klass);
4404                 size = mono_class_array_element_size (klass);
4405         }
4406
4407         mult_reg = alloc_preg (cfg);
4408         array_reg = arr->dreg;
4409         index_reg = index->dreg;
4410
4411 #if SIZEOF_REGISTER == 8
4412         /* The array reg is 64 bits but the index reg is only 32 */
4413         if (COMPILE_LLVM (cfg)) {
4414                 /*
4415                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4416                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4417                  * of OP_X86_LEA for llvm.
4418                  */
4419                 index2_reg = index_reg;
4420         } else {
4421                 index2_reg = alloc_preg (cfg);
4422                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4423         }
4424 #else
4425         if (index->type == STACK_I8) {
4426                 index2_reg = alloc_preg (cfg);
4427                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4428         } else {
4429                 index2_reg = index_reg;
4430         }
4431 #endif
4432
4433         if (bcheck)
4434                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4435
4436 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4437         if (size == 1 || size == 2 || size == 4 || size == 8) {
4438                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4439
4440                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4441                 ins->klass = mono_class_get_element_class (klass);
4442                 ins->type = STACK_MP;
4443
4444                 return ins;
4445         }
4446 #endif
4447
4448         add_reg = alloc_ireg_mp (cfg);
4449
4450         if (size == -1) {
4451                 MonoInst *rgctx_ins;
4452
4453                 /* gsharedvt */
4454                 g_assert (cfg->gshared);
4455                 context_used = mini_class_check_context_used (cfg, klass);
4456                 g_assert (context_used);
4457                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4458                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4459         } else {
4460                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4461         }
4462         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4463         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4464         ins->klass = mono_class_get_element_class (klass);
4465         ins->type = STACK_MP;
4466         MONO_ADD_INS (cfg->cbb, ins);
4467
4468         return ins;
4469 }
4470
4471 static MonoInst*
4472 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4473 {
4474         int bounds_reg = alloc_preg (cfg);
4475         int add_reg = alloc_ireg_mp (cfg);
4476         int mult_reg = alloc_preg (cfg);
4477         int mult2_reg = alloc_preg (cfg);
4478         int low1_reg = alloc_preg (cfg);
4479         int low2_reg = alloc_preg (cfg);
4480         int high1_reg = alloc_preg (cfg);
4481         int high2_reg = alloc_preg (cfg);
4482         int realidx1_reg = alloc_preg (cfg);
4483         int realidx2_reg = alloc_preg (cfg);
4484         int sum_reg = alloc_preg (cfg);
4485         int index1, index2, tmpreg;
4486         MonoInst *ins;
4487         guint32 size;
4488
4489         mono_class_init (klass);
4490         size = mono_class_array_element_size (klass);
4491
4492         index1 = index_ins1->dreg;
4493         index2 = index_ins2->dreg;
4494
4495 #if SIZEOF_REGISTER == 8
4496         /* The array reg is 64 bits but the index reg is only 32 */
4497         if (COMPILE_LLVM (cfg)) {
4498                 /* Not needed */
4499         } else {
4500                 tmpreg = alloc_preg (cfg);
4501                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4502                 index1 = tmpreg;
4503                 tmpreg = alloc_preg (cfg);
4504                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4505                 index2 = tmpreg;
4506         }
4507 #else
4508         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4509         tmpreg = -1;
4510 #endif
4511
4512         /* range checking */
4513         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4514                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4515
4516         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4517                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4518         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4519         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4520                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4521         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4522         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4523
4524         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4525                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4526         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4527         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4528                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4529         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4530         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4531
4532         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4533         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4534         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4535         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4536         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4537
4538         ins->type = STACK_MP;
4539         ins->klass = klass;
4540         MONO_ADD_INS (cfg->cbb, ins);
4541
4542         return ins;
4543 }
4544
4545 static MonoInst*
4546 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4547 {
4548         int rank;
4549         MonoInst *addr;
4550         MonoMethod *addr_method;
4551         int element_size;
4552         MonoClass *eclass = cmethod->klass->element_class;
4553
4554         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4555
4556         if (rank == 1)
4557                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4558
4559         /* emit_ldelema_2 depends on OP_LMUL */
4560         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4561                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4562         }
4563
4564         if (mini_is_gsharedvt_variable_klass (eclass))
4565                 element_size = 0;
4566         else
4567                 element_size = mono_class_array_element_size (eclass);
4568         addr_method = mono_marshal_get_array_address (rank, element_size);
4569         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4570
4571         return addr;
4572 }
4573
4574 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4575 static MonoInst*
4576 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4577 {
4578         MonoInst *addr, *store, *load;
4579         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4580
4581         /* the bounds check is already done by the callers */
4582         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4583         if (is_set) {
4584                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4585                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4586                 if (mini_type_is_reference (&eklass->byval_arg))
4587                         mini_emit_write_barrier (cfg, addr, load);
4588         } else {
4589                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4590                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4591         }
4592         return store;
4593 }
4594
4595
4596 static gboolean
4597 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4598 {
4599         return mini_type_is_reference (&klass->byval_arg);
4600 }
4601
4602 static MonoInst*
4603 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4604 {
4605         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4606                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4607                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4608                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4609                 MonoInst *iargs [3];
4610
4611                 if (!helper->slot)
4612                         mono_class_setup_vtable (obj_array);
4613                 g_assert (helper->slot);
4614
4615                 if (sp [0]->type != STACK_OBJ)
4616                         return NULL;
4617                 if (sp [2]->type != STACK_OBJ)
4618                         return NULL;
4619
4620                 iargs [2] = sp [2];
4621                 iargs [1] = sp [1];
4622                 iargs [0] = sp [0];
4623
4624                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4625         } else {
4626                 MonoInst *ins;
4627
4628                 if (mini_is_gsharedvt_variable_klass (klass)) {
4629                         MonoInst *addr;
4630
4631                         // FIXME-VT: OP_ICONST optimization
4632                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4633                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4634                         ins->opcode = OP_STOREV_MEMBASE;
4635                 } else if (sp [1]->opcode == OP_ICONST) {
4636                         int array_reg = sp [0]->dreg;
4637                         int index_reg = sp [1]->dreg;
4638                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4639
4640                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4641                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4642
4643                         if (safety_checks)
4644                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4645                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4646                 } else {
4647                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4648                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4649                         if (generic_class_is_reference_type (cfg, klass))
4650                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4651                 }
4652                 return ins;
4653         }
4654 }
4655
4656 static MonoInst*
4657 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4658 {
4659         MonoClass *eklass;
4660
4661         if (is_set)
4662                 eklass = mono_class_from_mono_type (fsig->params [2]);
4663         else
4664                 eklass = mono_class_from_mono_type (fsig->ret);
4665
4666         if (is_set) {
4667                 return emit_array_store (cfg, eklass, args, FALSE);
4668         } else {
4669                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4670                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4671                 return ins;
4672         }
4673 }
4674
4675 static gboolean
4676 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4677 {
4678         uint32_t align;
4679         int param_size, return_size;
4680
4681         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4682         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4683
4684         if (cfg->verbose_level > 3)
4685                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4686
4687         //Don't allow mixing reference types with value types
4688         if (param_klass->valuetype != return_klass->valuetype) {
4689                 if (cfg->verbose_level > 3)
4690                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4691                 return FALSE;
4692         }
4693
4694         if (!param_klass->valuetype) {
4695                 if (cfg->verbose_level > 3)
4696                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4697                 return TRUE;
4698         }
4699
4700         //That are blitable
4701         if (param_klass->has_references || return_klass->has_references)
4702                 return FALSE;
4703
4704         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4705         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4706                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4707                         if (cfg->verbose_level > 3)
4708                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4709                 return FALSE;
4710         }
4711
4712         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4713                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4714                 if (cfg->verbose_level > 3)
4715                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4716                 return FALSE;
4717         }
4718
4719         param_size = mono_class_value_size (param_klass, &align);
4720         return_size = mono_class_value_size (return_klass, &align);
4721
4722         //We can do it if sizes match
4723         if (param_size == return_size) {
4724                 if (cfg->verbose_level > 3)
4725                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4726                 return TRUE;
4727         }
4728
4729         //No simple way to handle struct if sizes don't match
4730         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4731                 if (cfg->verbose_level > 3)
4732                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4733                 return FALSE;
4734         }
4735
4736         /*
4737          * Same reg size category.
4738          * A quick note on why we don't require widening here.
4739          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4740          *
4741          * Since the source value comes from a function argument, the JIT will already have
4742          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4743          */
4744         if (param_size <= 4 && return_size <= 4) {
4745                 if (cfg->verbose_level > 3)
4746                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4747                 return TRUE;
4748         }
4749
4750         return FALSE;
4751 }
4752
4753 static MonoInst*
4754 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4755 {
4756         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4757         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4758
4759         if (mini_is_gsharedvt_variable_type (fsig->ret))
4760                 return NULL;
4761
4762         //Valuetypes that are semantically equivalent or numbers than can be widened to
4763         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4764                 return args [0];
4765
4766         //Arrays of valuetypes that are semantically equivalent
4767         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4768                 return args [0];
4769
4770         return NULL;
4771 }
4772
4773 static MonoInst*
4774 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4775 {
4776 #ifdef MONO_ARCH_SIMD_INTRINSICS
4777         MonoInst *ins = NULL;
4778
4779         if (cfg->opt & MONO_OPT_SIMD) {
4780                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4781                 if (ins)
4782                         return ins;
4783         }
4784 #endif
4785
4786         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4787 }
4788
4789 MonoInst*
4790 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4791 {
4792         MonoInst *ins = NULL;
4793         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4794         MONO_ADD_INS (cfg->cbb, ins);
4795         ins->backend.memory_barrier_kind = kind;
4796
4797         return ins;
4798 }
4799
4800 static MonoInst*
4801 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4802 {
4803         MonoInst *ins = NULL;
4804         int opcode = 0;
4805
4806         /* The LLVM backend supports these intrinsics */
4807         if (cmethod->klass == mono_defaults.math_class) {
4808                 if (strcmp (cmethod->name, "Sin") == 0) {
4809                         opcode = OP_SIN;
4810                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4811                         opcode = OP_COS;
4812                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4813                         opcode = OP_SQRT;
4814                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4815                         opcode = OP_ABS;
4816                 }
4817
4818                 if (opcode && fsig->param_count == 1) {
4819                         MONO_INST_NEW (cfg, ins, opcode);
4820                         ins->type = STACK_R8;
4821                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4822                         ins->sreg1 = args [0]->dreg;
4823                         MONO_ADD_INS (cfg->cbb, ins);
4824                 }
4825
4826                 opcode = 0;
4827                 if (cfg->opt & MONO_OPT_CMOV) {
4828                         if (strcmp (cmethod->name, "Min") == 0) {
4829                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4830                                         opcode = OP_IMIN;
4831                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4832                                         opcode = OP_IMIN_UN;
4833                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4834                                         opcode = OP_LMIN;
4835                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4836                                         opcode = OP_LMIN_UN;
4837                         } else if (strcmp (cmethod->name, "Max") == 0) {
4838                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4839                                         opcode = OP_IMAX;
4840                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4841                                         opcode = OP_IMAX_UN;
4842                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4843                                         opcode = OP_LMAX;
4844                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4845                                         opcode = OP_LMAX_UN;
4846                         }
4847                 }
4848
4849                 if (opcode && fsig->param_count == 2) {
4850                         MONO_INST_NEW (cfg, ins, opcode);
4851                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4852                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4853                         ins->sreg1 = args [0]->dreg;
4854                         ins->sreg2 = args [1]->dreg;
4855                         MONO_ADD_INS (cfg->cbb, ins);
4856                 }
4857         }
4858
4859         return ins;
4860 }
4861
4862 static MonoInst*
4863 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4864 {
4865         if (cmethod->klass == mono_defaults.array_class) {
4866                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4867                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4868                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4869                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4870                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4871                         return emit_array_unsafe_mov (cfg, fsig, args);
4872         }
4873
4874         return NULL;
4875 }
4876
4877
4878 static gboolean
4879 mono_type_is_native_blittable (MonoType *t)
4880 {
4881         if (MONO_TYPE_IS_REFERENCE (t))
4882                 return FALSE;
4883
4884         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4885                 return TRUE;
4886
4887         MonoClass *klass = mono_class_from_mono_type (t);
4888
4889         //MonoClass::blitable depends on mono_class_setup_fields being done.
4890         mono_class_setup_fields (klass);
4891         if (!klass->blittable)
4892                 return FALSE;
4893
4894         // If the native marshal size is different we can't convert PtrToStructure to a type load
4895         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4896                 return FALSE;
4897
4898         return TRUE;
4899 }
4900
4901
4902 static MonoInst*
4903 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4904 {
4905         MonoInst *ins = NULL;
4906         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4907
4908         if (cmethod->klass == mono_defaults.string_class) {
4909                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4910                         int dreg = alloc_ireg (cfg);
4911                         int index_reg = alloc_preg (cfg);
4912                         int add_reg = alloc_preg (cfg);
4913
4914 #if SIZEOF_REGISTER == 8
4915                         if (COMPILE_LLVM (cfg)) {
4916                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4917                         } else {
4918                                 /* The array reg is 64 bits but the index reg is only 32 */
4919                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4920                         }
4921 #else
4922                         index_reg = args [1]->dreg;
4923 #endif
4924                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4925
4926 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4927                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4928                         add_reg = ins->dreg;
4929                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4930                                                                    add_reg, 0);
4931 #else
4932                         int mult_reg = alloc_preg (cfg);
4933                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4934                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4935                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4936                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4937 #endif
4938                         type_from_op (cfg, ins, NULL, NULL);
4939                         return ins;
4940                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4941                         int dreg = alloc_ireg (cfg);
4942                         /* Decompose later to allow more optimizations */
4943                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4944                         ins->type = STACK_I4;
4945                         ins->flags |= MONO_INST_FAULT;
4946                         cfg->cbb->has_array_access = TRUE;
4947                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4948
4949                         return ins;
4950                 } else
4951                         return NULL;
4952         } else if (cmethod->klass == mono_defaults.object_class) {
4953                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4954                         int dreg = alloc_ireg_ref (cfg);
4955                         int vt_reg = alloc_preg (cfg);
4956                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4957                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4958                         type_from_op (cfg, ins, NULL, NULL);
4959
4960                         return ins;
4961                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4962                         int dreg = alloc_ireg (cfg);
4963                         int t1 = alloc_ireg (cfg);
4964
4965                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4966                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4967                         ins->type = STACK_I4;
4968
4969                         return ins;
4970                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4971                         MONO_INST_NEW (cfg, ins, OP_NOP);
4972                         MONO_ADD_INS (cfg->cbb, ins);
4973                         return ins;
4974                 } else
4975                         return NULL;
4976         } else if (cmethod->klass == mono_defaults.array_class) {
4977                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4978                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4979                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4980                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4981
4982 #ifndef MONO_BIG_ARRAYS
4983                 /*
4984                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4985                  * Array methods.
4986                  */
4987                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4988                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4989                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4990                         int dreg = alloc_ireg (cfg);
4991                         int bounds_reg = alloc_ireg_mp (cfg);
4992                         MonoBasicBlock *end_bb, *szarray_bb;
4993                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4994
4995                         NEW_BBLOCK (cfg, end_bb);
4996                         NEW_BBLOCK (cfg, szarray_bb);
4997
4998                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4999                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5000                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5001                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5002                         /* Non-szarray case */
5003                         if (get_length)
5004                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5005                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5006                         else
5007                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5008                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5009                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5010                         MONO_START_BB (cfg, szarray_bb);
5011                         /* Szarray case */
5012                         if (get_length)
5013                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5014                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5015                         else
5016                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5017                         MONO_START_BB (cfg, end_bb);
5018
5019                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5020                         ins->type = STACK_I4;
5021
5022                         return ins;
5023                 }
5024 #endif
5025
5026                 if (cmethod->name [0] != 'g')
5027                         return NULL;
5028
5029                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5030                         int dreg = alloc_ireg (cfg);
5031                         int vtable_reg = alloc_preg (cfg);
5032                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5033                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5034                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5035                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5036                         type_from_op (cfg, ins, NULL, NULL);
5037
5038                         return ins;
5039                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5040                         int dreg = alloc_ireg (cfg);
5041
5042                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5043                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5044                         type_from_op (cfg, ins, NULL, NULL);
5045
5046                         return ins;
5047                 } else
5048                         return NULL;
5049         } else if (cmethod->klass == runtime_helpers_class) {
5050                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5051                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5052                         return ins;
5053                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5054                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5055                         g_assert (ctx);
5056                         g_assert (ctx->method_inst);
5057                         g_assert (ctx->method_inst->type_argc == 1);
5058                         MonoType *arg_type = ctx->method_inst->type_argv [0];
5059                         MonoType *t;
5060                         MonoClass *klass;
5061
5062                         ins = NULL;
5063
5064                         /* Resolve the argument class as possible so we can handle common cases fast */
5065                         t = mini_get_underlying_type (arg_type);
5066                         klass = mono_class_from_mono_type (t);
5067                         mono_class_init (klass);
5068                         if (MONO_TYPE_IS_REFERENCE (t))
5069                                 EMIT_NEW_ICONST (cfg, ins, 1);
5070                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5071                                 EMIT_NEW_ICONST (cfg, ins, 0);
5072                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5073                                 EMIT_NEW_ICONST (cfg, ins, 1);
5074                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5075                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5076                         else {
5077                                 g_assert (cfg->gshared);
5078
5079                                 /* Have to use the original argument class here */
5080                                 MonoClass *arg_class = mono_class_from_mono_type (arg_type);
5081                                 int context_used = mini_class_check_context_used (cfg, arg_class);
5082
5083                                 /* This returns 1 or 2 */
5084                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, arg_class, MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5085                                 int dreg = alloc_ireg (cfg);
5086                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5087                         }
5088
5089                         return ins;
5090                 } else
5091                         return NULL;
5092         } else if (cmethod->klass == mono_defaults.monitor_class) {
5093                 gboolean is_enter = FALSE;
5094                 gboolean is_v4 = FALSE;
5095
5096                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5097                         is_enter = TRUE;
5098                         is_v4 = TRUE;
5099                 }
5100                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5101                         is_enter = TRUE;
5102
5103                 if (is_enter) {
5104                         /*
5105                          * To make async stack traces work, icalls which can block should have a wrapper.
5106                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5107                          */
5108                         MonoBasicBlock *end_bb;
5109
5110                         NEW_BBLOCK (cfg, end_bb);
5111
5112                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5113                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5114                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5115                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5116                         MONO_START_BB (cfg, end_bb);
5117                         return ins;
5118                 }
5119         } else if (cmethod->klass == mono_defaults.thread_class) {
5120                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5121                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5122                         MONO_ADD_INS (cfg->cbb, ins);
5123                         return ins;
5124                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5125                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5126                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5127                         guint32 opcode = 0;
5128                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5129
5130                         if (fsig->params [0]->type == MONO_TYPE_I1)
5131                                 opcode = OP_LOADI1_MEMBASE;
5132                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5133                                 opcode = OP_LOADU1_MEMBASE;
5134                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5135                                 opcode = OP_LOADI2_MEMBASE;
5136                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5137                                 opcode = OP_LOADU2_MEMBASE;
5138                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5139                                 opcode = OP_LOADI4_MEMBASE;
5140                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5141                                 opcode = OP_LOADU4_MEMBASE;
5142                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5143                                 opcode = OP_LOADI8_MEMBASE;
5144                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5145                                 opcode = OP_LOADR4_MEMBASE;
5146                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5147                                 opcode = OP_LOADR8_MEMBASE;
5148                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5149                                 opcode = OP_LOAD_MEMBASE;
5150
5151                         if (opcode) {
5152                                 MONO_INST_NEW (cfg, ins, opcode);
5153                                 ins->inst_basereg = args [0]->dreg;
5154                                 ins->inst_offset = 0;
5155                                 MONO_ADD_INS (cfg->cbb, ins);
5156
5157                                 switch (fsig->params [0]->type) {
5158                                 case MONO_TYPE_I1:
5159                                 case MONO_TYPE_U1:
5160                                 case MONO_TYPE_I2:
5161                                 case MONO_TYPE_U2:
5162                                 case MONO_TYPE_I4:
5163                                 case MONO_TYPE_U4:
5164                                         ins->dreg = mono_alloc_ireg (cfg);
5165                                         ins->type = STACK_I4;
5166                                         break;
5167                                 case MONO_TYPE_I8:
5168                                 case MONO_TYPE_U8:
5169                                         ins->dreg = mono_alloc_lreg (cfg);
5170                                         ins->type = STACK_I8;
5171                                         break;
5172                                 case MONO_TYPE_I:
5173                                 case MONO_TYPE_U:
5174                                         ins->dreg = mono_alloc_ireg (cfg);
5175 #if SIZEOF_REGISTER == 8
5176                                         ins->type = STACK_I8;
5177 #else
5178                                         ins->type = STACK_I4;
5179 #endif
5180                                         break;
5181                                 case MONO_TYPE_R4:
5182                                 case MONO_TYPE_R8:
5183                                         ins->dreg = mono_alloc_freg (cfg);
5184                                         ins->type = STACK_R8;
5185                                         break;
5186                                 default:
5187                                         g_assert (mini_type_is_reference (fsig->params [0]));
5188                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5189                                         ins->type = STACK_OBJ;
5190                                         break;
5191                                 }
5192
5193                                 if (opcode == OP_LOADI8_MEMBASE)
5194                                         ins = mono_decompose_opcode (cfg, ins);
5195
5196                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5197
5198                                 return ins;
5199                         }
5200                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5201                         guint32 opcode = 0;
5202                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5203
5204                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5205                                 opcode = OP_STOREI1_MEMBASE_REG;
5206                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5207                                 opcode = OP_STOREI2_MEMBASE_REG;
5208                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5209                                 opcode = OP_STOREI4_MEMBASE_REG;
5210                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5211                                 opcode = OP_STOREI8_MEMBASE_REG;
5212                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5213                                 opcode = OP_STORER4_MEMBASE_REG;
5214                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5215                                 opcode = OP_STORER8_MEMBASE_REG;
5216                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5217                                 opcode = OP_STORE_MEMBASE_REG;
5218
5219                         if (opcode) {
5220                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5221
5222                                 MONO_INST_NEW (cfg, ins, opcode);
5223                                 ins->sreg1 = args [1]->dreg;
5224                                 ins->inst_destbasereg = args [0]->dreg;
5225                                 ins->inst_offset = 0;
5226                                 MONO_ADD_INS (cfg->cbb, ins);
5227
5228                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5229                                         ins = mono_decompose_opcode (cfg, ins);
5230
5231                                 return ins;
5232                         }
5233                 }
5234         } else if (cmethod->klass->image == mono_defaults.corlib &&
5235                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5236                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5237                 ins = NULL;
5238
5239 #if SIZEOF_REGISTER == 8
5240                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5241                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5242                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5243                                 ins->dreg = mono_alloc_preg (cfg);
5244                                 ins->sreg1 = args [0]->dreg;
5245                                 ins->type = STACK_I8;
5246                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5247                                 MONO_ADD_INS (cfg->cbb, ins);
5248                         } else {
5249                                 MonoInst *load_ins;
5250
5251                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5252
5253                                 /* 64 bit reads are already atomic */
5254                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5255                                 load_ins->dreg = mono_alloc_preg (cfg);
5256                                 load_ins->inst_basereg = args [0]->dreg;
5257                                 load_ins->inst_offset = 0;
5258                                 load_ins->type = STACK_I8;
5259                                 MONO_ADD_INS (cfg->cbb, load_ins);
5260
5261                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5262
5263                                 ins = load_ins;
5264                         }
5265                 }
5266 #endif
5267
5268                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5269                         MonoInst *ins_iconst;
5270                         guint32 opcode = 0;
5271
5272                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5273                                 opcode = OP_ATOMIC_ADD_I4;
5274                                 cfg->has_atomic_add_i4 = TRUE;
5275                         }
5276 #if SIZEOF_REGISTER == 8
5277                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5278                                 opcode = OP_ATOMIC_ADD_I8;
5279 #endif
5280                         if (opcode) {
5281                                 if (!mono_arch_opcode_supported (opcode))
5282                                         return NULL;
5283                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5284                                 ins_iconst->inst_c0 = 1;
5285                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5286                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5287
5288                                 MONO_INST_NEW (cfg, ins, opcode);
5289                                 ins->dreg = mono_alloc_ireg (cfg);
5290                                 ins->inst_basereg = args [0]->dreg;
5291                                 ins->inst_offset = 0;
5292                                 ins->sreg2 = ins_iconst->dreg;
5293                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5294                                 MONO_ADD_INS (cfg->cbb, ins);
5295                         }
5296                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5297                         MonoInst *ins_iconst;
5298                         guint32 opcode = 0;
5299
5300                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5301                                 opcode = OP_ATOMIC_ADD_I4;
5302                                 cfg->has_atomic_add_i4 = TRUE;
5303                         }
5304 #if SIZEOF_REGISTER == 8
5305                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5306                                 opcode = OP_ATOMIC_ADD_I8;
5307 #endif
5308                         if (opcode) {
5309                                 if (!mono_arch_opcode_supported (opcode))
5310                                         return NULL;
5311                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5312                                 ins_iconst->inst_c0 = -1;
5313                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5314                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5315
5316                                 MONO_INST_NEW (cfg, ins, opcode);
5317                                 ins->dreg = mono_alloc_ireg (cfg);
5318                                 ins->inst_basereg = args [0]->dreg;
5319                                 ins->inst_offset = 0;
5320                                 ins->sreg2 = ins_iconst->dreg;
5321                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5322                                 MONO_ADD_INS (cfg->cbb, ins);
5323                         }
5324                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5325                         guint32 opcode = 0;
5326
5327                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5328                                 opcode = OP_ATOMIC_ADD_I4;
5329                                 cfg->has_atomic_add_i4 = TRUE;
5330                         }
5331 #if SIZEOF_REGISTER == 8
5332                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5333                                 opcode = OP_ATOMIC_ADD_I8;
5334 #endif
5335                         if (opcode) {
5336                                 if (!mono_arch_opcode_supported (opcode))
5337                                         return NULL;
5338                                 MONO_INST_NEW (cfg, ins, opcode);
5339                                 ins->dreg = mono_alloc_ireg (cfg);
5340                                 ins->inst_basereg = args [0]->dreg;
5341                                 ins->inst_offset = 0;
5342                                 ins->sreg2 = args [1]->dreg;
5343                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5344                                 MONO_ADD_INS (cfg->cbb, ins);
5345                         }
5346                 }
5347                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5348                         MonoInst *f2i = NULL, *i2f;
5349                         guint32 opcode, f2i_opcode, i2f_opcode;
5350                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5351                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5352
5353                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5354                             fsig->params [0]->type == MONO_TYPE_R4) {
5355                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5356                                 f2i_opcode = OP_MOVE_F_TO_I4;
5357                                 i2f_opcode = OP_MOVE_I4_TO_F;
5358                                 cfg->has_atomic_exchange_i4 = TRUE;
5359                         }
5360 #if SIZEOF_REGISTER == 8
5361                         else if (is_ref ||
5362                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5363                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5364                                  fsig->params [0]->type == MONO_TYPE_I) {
5365                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5366                                 f2i_opcode = OP_MOVE_F_TO_I8;
5367                                 i2f_opcode = OP_MOVE_I8_TO_F;
5368                         }
5369 #else
5370                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5371                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5372                                 cfg->has_atomic_exchange_i4 = TRUE;
5373                         }
5374 #endif
5375                         else
5376                                 return NULL;
5377
5378                         if (!mono_arch_opcode_supported (opcode))
5379                                 return NULL;
5380
5381                         if (is_float) {
5382                                 /* TODO: Decompose these opcodes instead of bailing here. */
5383                                 if (COMPILE_SOFT_FLOAT (cfg))
5384                                         return NULL;
5385
5386                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5387                                 f2i->dreg = mono_alloc_ireg (cfg);
5388                                 f2i->sreg1 = args [1]->dreg;
5389                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5390                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5391                                 MONO_ADD_INS (cfg->cbb, f2i);
5392                         }
5393
5394                         MONO_INST_NEW (cfg, ins, opcode);
5395                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5396                         ins->inst_basereg = args [0]->dreg;
5397                         ins->inst_offset = 0;
5398                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5399                         MONO_ADD_INS (cfg->cbb, ins);
5400
5401                         switch (fsig->params [0]->type) {
5402                         case MONO_TYPE_I4:
5403                                 ins->type = STACK_I4;
5404                                 break;
5405                         case MONO_TYPE_I8:
5406                                 ins->type = STACK_I8;
5407                                 break;
5408                         case MONO_TYPE_I:
5409 #if SIZEOF_REGISTER == 8
5410                                 ins->type = STACK_I8;
5411 #else
5412                                 ins->type = STACK_I4;
5413 #endif
5414                                 break;
5415                         case MONO_TYPE_R4:
5416                         case MONO_TYPE_R8:
5417                                 ins->type = STACK_R8;
5418                                 break;
5419                         default:
5420                                 g_assert (mini_type_is_reference (fsig->params [0]));
5421                                 ins->type = STACK_OBJ;
5422                                 break;
5423                         }
5424
5425                         if (is_float) {
5426                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5427                                 i2f->dreg = mono_alloc_freg (cfg);
5428                                 i2f->sreg1 = ins->dreg;
5429                                 i2f->type = STACK_R8;
5430                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5431                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5432                                 MONO_ADD_INS (cfg->cbb, i2f);
5433
5434                                 ins = i2f;
5435                         }
5436
5437                         if (cfg->gen_write_barriers && is_ref)
5438                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5439                 }
5440                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5441                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5442                         guint32 opcode, f2i_opcode, i2f_opcode;
5443                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5444                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5445
5446                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5447                             fsig->params [1]->type == MONO_TYPE_R4) {
5448                                 opcode = OP_ATOMIC_CAS_I4;
5449                                 f2i_opcode = OP_MOVE_F_TO_I4;
5450                                 i2f_opcode = OP_MOVE_I4_TO_F;
5451                                 cfg->has_atomic_cas_i4 = TRUE;
5452                         }
5453 #if SIZEOF_REGISTER == 8
5454                         else if (is_ref ||
5455                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5456                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5457                                  fsig->params [1]->type == MONO_TYPE_I) {
5458                                 opcode = OP_ATOMIC_CAS_I8;
5459                                 f2i_opcode = OP_MOVE_F_TO_I8;
5460                                 i2f_opcode = OP_MOVE_I8_TO_F;
5461                         }
5462 #else
5463                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5464                                 opcode = OP_ATOMIC_CAS_I4;
5465                                 cfg->has_atomic_cas_i4 = TRUE;
5466                         }
5467 #endif
5468                         else
5469                                 return NULL;
5470
5471                         if (!mono_arch_opcode_supported (opcode))
5472                                 return NULL;
5473
5474                         if (is_float) {
5475                                 /* TODO: Decompose these opcodes instead of bailing here. */
5476                                 if (COMPILE_SOFT_FLOAT (cfg))
5477                                         return NULL;
5478
5479                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5480                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5481                                 f2i_new->sreg1 = args [1]->dreg;
5482                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5483                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5484                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5485
5486                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5487                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5488                                 f2i_cmp->sreg1 = args [2]->dreg;
5489                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5490                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5491                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5492                         }
5493
5494                         MONO_INST_NEW (cfg, ins, opcode);
5495                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5496                         ins->sreg1 = args [0]->dreg;
5497                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5498                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5499                         MONO_ADD_INS (cfg->cbb, ins);
5500
5501                         switch (fsig->params [1]->type) {
5502                         case MONO_TYPE_I4:
5503                                 ins->type = STACK_I4;
5504                                 break;
5505                         case MONO_TYPE_I8:
5506                                 ins->type = STACK_I8;
5507                                 break;
5508                         case MONO_TYPE_I:
5509 #if SIZEOF_REGISTER == 8
5510                                 ins->type = STACK_I8;
5511 #else
5512                                 ins->type = STACK_I4;
5513 #endif
5514                                 break;
5515                         case MONO_TYPE_R4:
5516                                 ins->type = cfg->r4_stack_type;
5517                                 break;
5518                         case MONO_TYPE_R8:
5519                                 ins->type = STACK_R8;
5520                                 break;
5521                         default:
5522                                 g_assert (mini_type_is_reference (fsig->params [1]));
5523                                 ins->type = STACK_OBJ;
5524                                 break;
5525                         }
5526
5527                         if (is_float) {
5528                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5529                                 i2f->dreg = mono_alloc_freg (cfg);
5530                                 i2f->sreg1 = ins->dreg;
5531                                 i2f->type = STACK_R8;
5532                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5533                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5534                                 MONO_ADD_INS (cfg->cbb, i2f);
5535
5536                                 ins = i2f;
5537                         }
5538
5539                         if (cfg->gen_write_barriers && is_ref)
5540                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5541                 }
5542                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5543                          fsig->params [1]->type == MONO_TYPE_I4) {
5544                         MonoInst *cmp, *ceq;
5545
5546                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5547                                 return NULL;
5548
5549                         /* int32 r = CAS (location, value, comparand); */
5550                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5551                         ins->dreg = alloc_ireg (cfg);
5552                         ins->sreg1 = args [0]->dreg;
5553                         ins->sreg2 = args [1]->dreg;
5554                         ins->sreg3 = args [2]->dreg;
5555                         ins->type = STACK_I4;
5556                         MONO_ADD_INS (cfg->cbb, ins);
5557
5558                         /* bool result = r == comparand; */
5559                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5560                         cmp->sreg1 = ins->dreg;
5561                         cmp->sreg2 = args [2]->dreg;
5562                         cmp->type = STACK_I4;
5563                         MONO_ADD_INS (cfg->cbb, cmp);
5564
5565                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5566                         ceq->dreg = alloc_ireg (cfg);
5567                         ceq->type = STACK_I4;
5568                         MONO_ADD_INS (cfg->cbb, ceq);
5569
5570                         /* *success = result; */
5571                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5572
5573                         cfg->has_atomic_cas_i4 = TRUE;
5574                 }
5575                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5576                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5577
5578                 if (ins)
5579                         return ins;
5580         } else if (cmethod->klass->image == mono_defaults.corlib &&
5581                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5582                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5583                 ins = NULL;
5584
5585                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5586                         guint32 opcode = 0;
5587                         MonoType *t = fsig->params [0];
5588                         gboolean is_ref;
5589                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5590
5591                         g_assert (t->byref);
5592                         /* t is a byref type, so the reference check is more complicated */
5593                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5594                         if (t->type == MONO_TYPE_I1)
5595                                 opcode = OP_ATOMIC_LOAD_I1;
5596                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5597                                 opcode = OP_ATOMIC_LOAD_U1;
5598                         else if (t->type == MONO_TYPE_I2)
5599                                 opcode = OP_ATOMIC_LOAD_I2;
5600                         else if (t->type == MONO_TYPE_U2)
5601                                 opcode = OP_ATOMIC_LOAD_U2;
5602                         else if (t->type == MONO_TYPE_I4)
5603                                 opcode = OP_ATOMIC_LOAD_I4;
5604                         else if (t->type == MONO_TYPE_U4)
5605                                 opcode = OP_ATOMIC_LOAD_U4;
5606                         else if (t->type == MONO_TYPE_R4)
5607                                 opcode = OP_ATOMIC_LOAD_R4;
5608                         else if (t->type == MONO_TYPE_R8)
5609                                 opcode = OP_ATOMIC_LOAD_R8;
5610 #if SIZEOF_REGISTER == 8
5611                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5612                                 opcode = OP_ATOMIC_LOAD_I8;
5613                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5614                                 opcode = OP_ATOMIC_LOAD_U8;
5615 #else
5616                         else if (t->type == MONO_TYPE_I)
5617                                 opcode = OP_ATOMIC_LOAD_I4;
5618                         else if (is_ref || t->type == MONO_TYPE_U)
5619                                 opcode = OP_ATOMIC_LOAD_U4;
5620 #endif
5621
5622                         if (opcode) {
5623                                 if (!mono_arch_opcode_supported (opcode))
5624                                         return NULL;
5625
5626                                 MONO_INST_NEW (cfg, ins, opcode);
5627                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5628                                 ins->sreg1 = args [0]->dreg;
5629                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5630                                 MONO_ADD_INS (cfg->cbb, ins);
5631
5632                                 switch (t->type) {
5633                                 case MONO_TYPE_BOOLEAN:
5634                                 case MONO_TYPE_I1:
5635                                 case MONO_TYPE_U1:
5636                                 case MONO_TYPE_I2:
5637                                 case MONO_TYPE_U2:
5638                                 case MONO_TYPE_I4:
5639                                 case MONO_TYPE_U4:
5640                                         ins->type = STACK_I4;
5641                                         break;
5642                                 case MONO_TYPE_I8:
5643                                 case MONO_TYPE_U8:
5644                                         ins->type = STACK_I8;
5645                                         break;
5646                                 case MONO_TYPE_I:
5647                                 case MONO_TYPE_U:
5648 #if SIZEOF_REGISTER == 8
5649                                         ins->type = STACK_I8;
5650 #else
5651                                         ins->type = STACK_I4;
5652 #endif
5653                                         break;
5654                                 case MONO_TYPE_R4:
5655                                         ins->type = cfg->r4_stack_type;
5656                                         break;
5657                                 case MONO_TYPE_R8:
5658                                         ins->type = STACK_R8;
5659                                         break;
5660                                 default:
5661                                         g_assert (is_ref);
5662                                         ins->type = STACK_OBJ;
5663                                         break;
5664                                 }
5665                         }
5666                 }
5667
5668                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5669                         guint32 opcode = 0;
5670                         MonoType *t = fsig->params [0];
5671                         gboolean is_ref;
5672
5673                         g_assert (t->byref);
5674                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5675                         if (t->type == MONO_TYPE_I1)
5676                                 opcode = OP_ATOMIC_STORE_I1;
5677                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5678                                 opcode = OP_ATOMIC_STORE_U1;
5679                         else if (t->type == MONO_TYPE_I2)
5680                                 opcode = OP_ATOMIC_STORE_I2;
5681                         else if (t->type == MONO_TYPE_U2)
5682                                 opcode = OP_ATOMIC_STORE_U2;
5683                         else if (t->type == MONO_TYPE_I4)
5684                                 opcode = OP_ATOMIC_STORE_I4;
5685                         else if (t->type == MONO_TYPE_U4)
5686                                 opcode = OP_ATOMIC_STORE_U4;
5687                         else if (t->type == MONO_TYPE_R4)
5688                                 opcode = OP_ATOMIC_STORE_R4;
5689                         else if (t->type == MONO_TYPE_R8)
5690                                 opcode = OP_ATOMIC_STORE_R8;
5691 #if SIZEOF_REGISTER == 8
5692                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5693                                 opcode = OP_ATOMIC_STORE_I8;
5694                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5695                                 opcode = OP_ATOMIC_STORE_U8;
5696 #else
5697                         else if (t->type == MONO_TYPE_I)
5698                                 opcode = OP_ATOMIC_STORE_I4;
5699                         else if (is_ref || t->type == MONO_TYPE_U)
5700                                 opcode = OP_ATOMIC_STORE_U4;
5701 #endif
5702
5703                         if (opcode) {
5704                                 if (!mono_arch_opcode_supported (opcode))
5705                                         return NULL;
5706
5707                                 MONO_INST_NEW (cfg, ins, opcode);
5708                                 ins->dreg = args [0]->dreg;
5709                                 ins->sreg1 = args [1]->dreg;
5710                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5711                                 MONO_ADD_INS (cfg->cbb, ins);
5712
5713                                 if (cfg->gen_write_barriers && is_ref)
5714                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5715                         }
5716                 }
5717
5718                 if (ins)
5719                         return ins;
5720         } else if (cmethod->klass->image == mono_defaults.corlib &&
5721                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5722                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5723                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5724                         if (mini_should_insert_breakpoint (cfg->method)) {
5725                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5726                         } else {
5727                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5728                                 MONO_ADD_INS (cfg->cbb, ins);
5729                         }
5730                         return ins;
5731                 }
5732         } else if (cmethod->klass->image == mono_defaults.corlib &&
5733                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5734                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5735                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5736 #ifdef TARGET_WIN32
5737                         EMIT_NEW_ICONST (cfg, ins, 1);
5738 #else
5739                         EMIT_NEW_ICONST (cfg, ins, 0);
5740 #endif
5741                 }
5742         } else if (cmethod->klass->image == mono_defaults.corlib &&
5743                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5744                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5745                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5746                         /* No stack walks are currently available, so implement this as an intrinsic */
5747                         MonoInst *assembly_ins;
5748
5749                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5750                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5751                         return ins;
5752                 }
5753         } else if (cmethod->klass->image == mono_defaults.corlib &&
5754                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5755                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5756                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5757                         /* No stack walks are currently available, so implement this as an intrinsic */
5758                         MonoInst *method_ins;
5759                         MonoMethod *declaring = cfg->method;
5760
5761                         /* This returns the declaring generic method */
5762                         if (declaring->is_inflated)
5763                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5764                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5765                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5766                         cfg->no_inline = TRUE;
5767                         if (cfg->method != cfg->current_method)
5768                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5769                         return ins;
5770                 }
5771         } else if (cmethod->klass == mono_defaults.math_class) {
5772                 /*
5773                  * There is general branchless code for Min/Max, but it does not work for
5774                  * all inputs:
5775                  * http://everything2.com/?node_id=1051618
5776                  */
5777         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5778                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5779                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5780                 ins->dreg = alloc_preg (cfg);
5781                 ins->type = STACK_I4;
5782                 MONO_ADD_INS (cfg->cbb, ins);
5783                 return ins;
5784         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5785                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5786                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5787                                 !strcmp (cmethod->klass->name, "Selector")) ||
5788                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5789                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5790                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5791                                 !strcmp (cmethod->klass->name, "Selector"))
5792                            ) {
5793                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5794                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5795                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5796                     cfg->compile_aot) {
5797                         MonoInst *pi;
5798                         MonoJumpInfoToken *ji;
5799                         char *s;
5800
5801                         if (args [0]->opcode == OP_GOT_ENTRY) {
5802                                 pi = (MonoInst *)args [0]->inst_p1;
5803                                 g_assert (pi->opcode == OP_PATCH_INFO);
5804                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5805                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5806                         } else {
5807                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5808                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5809                         }
5810
5811                         NULLIFY_INS (args [0]);
5812
5813                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5814                         return_val_if_nok (&cfg->error, NULL);
5815
5816                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5817                         ins->dreg = mono_alloc_ireg (cfg);
5818                         // FIXME: Leaks
5819                         ins->inst_p0 = s;
5820                         MONO_ADD_INS (cfg->cbb, ins);
5821                         return ins;
5822                 }
5823         } else if (cmethod->klass->image == mono_defaults.corlib &&
5824                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5825                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5826                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5827                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5828                                 cmethod->is_inflated &&
5829                                 fsig->param_count == 1 &&
5830                                 !mini_method_check_context_used (cfg, cmethod)) {
5831
5832                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5833                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5834                         if (mono_type_is_native_blittable (arg0))
5835                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5836                 }
5837         }
5838
5839 #ifdef MONO_ARCH_SIMD_INTRINSICS
5840         if (cfg->opt & MONO_OPT_SIMD) {
5841                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5842                 if (ins)
5843                         return ins;
5844         }
5845 #endif
5846
5847         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5848         if (ins)
5849                 return ins;
5850
5851         if (COMPILE_LLVM (cfg)) {
5852                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5853                 if (ins)
5854                         return ins;
5855         }
5856
5857         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5858 }
5859
5860 /*
5861  * This entry point could be used later for arbitrary method
5862  * redirection.
5863  */
5864 inline static MonoInst*
5865 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5866                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5867 {
5868         if (method->klass == mono_defaults.string_class) {
5869                 /* managed string allocation support */
5870                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(cfg->opt & MONO_OPT_SHARED)) {
5871                         MonoInst *iargs [2];
5872                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5873                         MonoMethod *managed_alloc = NULL;
5874
5875                         g_assert (vtable); /*Should not fail since it System.String*/
5876 #ifndef MONO_CROSS_COMPILE
5877                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5878 #endif
5879                         if (!managed_alloc)
5880                                 return NULL;
5881                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5882                         iargs [1] = args [0];
5883                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5884                 }
5885         }
5886         return NULL;
5887 }
5888
5889 static void
5890 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5891 {
5892         MonoInst *store, *temp;
5893         int i;
5894
5895         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5896                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5897
5898                 /*
5899                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5900                  * would be different than the MonoInst's used to represent arguments, and
5901                  * the ldelema implementation can't deal with that.
5902                  * Solution: When ldelema is used on an inline argument, create a var for
5903                  * it, emit ldelema on that var, and emit the saving code below in
5904                  * inline_method () if needed.
5905                  */
5906                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5907                 cfg->args [i] = temp;
5908                 /* This uses cfg->args [i] which is set by the preceeding line */
5909                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5910                 store->cil_code = sp [0]->cil_code;
5911                 sp++;
5912         }
5913 }
5914
5915 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5916 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5917
5918 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5919 static gboolean
5920 check_inline_called_method_name_limit (MonoMethod *called_method)
5921 {
5922         int strncmp_result;
5923         static const char *limit = NULL;
5924
5925         if (limit == NULL) {
5926                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5927
5928                 if (limit_string != NULL)
5929                         limit = limit_string;
5930                 else
5931                         limit = "";
5932         }
5933
5934         if (limit [0] != '\0') {
5935                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5936
5937                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5938                 g_free (called_method_name);
5939
5940                 //return (strncmp_result <= 0);
5941                 return (strncmp_result == 0);
5942         } else {
5943                 return TRUE;
5944         }
5945 }
5946 #endif
5947
5948 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5949 static gboolean
5950 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5951 {
5952         int strncmp_result;
5953         static const char *limit = NULL;
5954
5955         if (limit == NULL) {
5956                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5957                 if (limit_string != NULL) {
5958                         limit = limit_string;
5959                 } else {
5960                         limit = "";
5961                 }
5962         }
5963
5964         if (limit [0] != '\0') {
5965                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5966
5967                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5968                 g_free (caller_method_name);
5969
5970                 //return (strncmp_result <= 0);
5971                 return (strncmp_result == 0);
5972         } else {
5973                 return TRUE;
5974         }
5975 }
5976 #endif
5977
5978 static void
5979 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5980 {
5981         static double r8_0 = 0.0;
5982         static float r4_0 = 0.0;
5983         MonoInst *ins;
5984         int t;
5985
5986         rtype = mini_get_underlying_type (rtype);
5987         t = rtype->type;
5988
5989         if (rtype->byref) {
5990                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5991         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5992                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5993         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5994                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5995         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5996                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5997                 ins->type = STACK_R4;
5998                 ins->inst_p0 = (void*)&r4_0;
5999                 ins->dreg = dreg;
6000                 MONO_ADD_INS (cfg->cbb, ins);
6001         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6002                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6003                 ins->type = STACK_R8;
6004                 ins->inst_p0 = (void*)&r8_0;
6005                 ins->dreg = dreg;
6006                 MONO_ADD_INS (cfg->cbb, ins);
6007         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6008                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6009                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6010         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6011                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6012         } else {
6013                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6014         }
6015 }
6016
6017 static void
6018 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6019 {
6020         int t;
6021
6022         rtype = mini_get_underlying_type (rtype);
6023         t = rtype->type;
6024
6025         if (rtype->byref) {
6026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6027         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6029         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6030                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6031         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6032                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6033         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6034                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6035         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6036                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6037                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6038         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6039                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6040         } else {
6041                 emit_init_rvar (cfg, dreg, rtype);
6042         }
6043 }
6044
6045 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6046 static void
6047 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6048 {
6049         MonoInst *var = cfg->locals [local];
6050         if (COMPILE_SOFT_FLOAT (cfg)) {
6051                 MonoInst *store;
6052                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6053                 emit_init_rvar (cfg, reg, type);
6054                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6055         } else {
6056                 if (init)
6057                         emit_init_rvar (cfg, var->dreg, type);
6058                 else
6059                         emit_dummy_init_rvar (cfg, var->dreg, type);
6060         }
6061 }
6062
6063 int
6064 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6065 {
6066         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6067 }
6068
6069 /*
6070  * inline_method:
6071  *
6072  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6073  */
6074 static int
6075 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6076                guchar *ip, guint real_offset, gboolean inline_always)
6077 {
6078         MonoError error;
6079         MonoInst *ins, *rvar = NULL;
6080         MonoMethodHeader *cheader;
6081         MonoBasicBlock *ebblock, *sbblock;
6082         int i, costs;
6083         MonoMethod *prev_inlined_method;
6084         MonoInst **prev_locals, **prev_args;
6085         MonoType **prev_arg_types;
6086         guint prev_real_offset;
6087         GHashTable *prev_cbb_hash;
6088         MonoBasicBlock **prev_cil_offset_to_bb;
6089         MonoBasicBlock *prev_cbb;
6090         const unsigned char *prev_ip;
6091         unsigned char *prev_cil_start;
6092         guint32 prev_cil_offset_to_bb_len;
6093         MonoMethod *prev_current_method;
6094         MonoGenericContext *prev_generic_context;
6095         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6096
6097         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6098
6099 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6100         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6101                 return 0;
6102 #endif
6103 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6104         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6105                 return 0;
6106 #endif
6107
6108         if (!fsig)
6109                 fsig = mono_method_signature (cmethod);
6110
6111         if (cfg->verbose_level > 2)
6112                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6113
6114         if (!cmethod->inline_info) {
6115                 cfg->stat_inlineable_methods++;
6116                 cmethod->inline_info = 1;
6117         }
6118
6119         /* allocate local variables */
6120         cheader = mono_method_get_header_checked (cmethod, &error);
6121         if (!cheader) {
6122                 if (inline_always) {
6123                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6124                         mono_error_move (&cfg->error, &error);
6125                 } else {
6126                         mono_error_cleanup (&error);
6127                 }
6128                 return 0;
6129         }
6130
6131         /*Must verify before creating locals as it can cause the JIT to assert.*/
6132         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6133                 mono_metadata_free_mh (cheader);
6134                 return 0;
6135         }
6136
6137         /* allocate space to store the return value */
6138         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6139                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6140         }
6141
6142         prev_locals = cfg->locals;
6143         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6144         for (i = 0; i < cheader->num_locals; ++i)
6145                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6146
6147         /* allocate start and end blocks */
6148         /* This is needed so if the inline is aborted, we can clean up */
6149         NEW_BBLOCK (cfg, sbblock);
6150         sbblock->real_offset = real_offset;
6151
6152         NEW_BBLOCK (cfg, ebblock);
6153         ebblock->block_num = cfg->num_bblocks++;
6154         ebblock->real_offset = real_offset;
6155
6156         prev_args = cfg->args;
6157         prev_arg_types = cfg->arg_types;
6158         prev_inlined_method = cfg->inlined_method;
6159         cfg->inlined_method = cmethod;
6160         cfg->ret_var_set = FALSE;
6161         cfg->inline_depth ++;
6162         prev_real_offset = cfg->real_offset;
6163         prev_cbb_hash = cfg->cbb_hash;
6164         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6165         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6166         prev_cil_start = cfg->cil_start;
6167         prev_ip = cfg->ip;
6168         prev_cbb = cfg->cbb;
6169         prev_current_method = cfg->current_method;
6170         prev_generic_context = cfg->generic_context;
6171         prev_ret_var_set = cfg->ret_var_set;
6172         prev_disable_inline = cfg->disable_inline;
6173
6174         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6175                 virtual_ = TRUE;
6176
6177         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6178
6179         ret_var_set = cfg->ret_var_set;
6180
6181         cfg->inlined_method = prev_inlined_method;
6182         cfg->real_offset = prev_real_offset;
6183         cfg->cbb_hash = prev_cbb_hash;
6184         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6185         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6186         cfg->cil_start = prev_cil_start;
6187         cfg->ip = prev_ip;
6188         cfg->locals = prev_locals;
6189         cfg->args = prev_args;
6190         cfg->arg_types = prev_arg_types;
6191         cfg->current_method = prev_current_method;
6192         cfg->generic_context = prev_generic_context;
6193         cfg->ret_var_set = prev_ret_var_set;
6194         cfg->disable_inline = prev_disable_inline;
6195         cfg->inline_depth --;
6196
6197         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6198                 if (cfg->verbose_level > 2)
6199                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6200
6201                 cfg->stat_inlined_methods++;
6202
6203                 /* always add some code to avoid block split failures */
6204                 MONO_INST_NEW (cfg, ins, OP_NOP);
6205                 MONO_ADD_INS (prev_cbb, ins);
6206
6207                 prev_cbb->next_bb = sbblock;
6208                 link_bblock (cfg, prev_cbb, sbblock);
6209
6210                 /*
6211                  * Get rid of the begin and end bblocks if possible to aid local
6212                  * optimizations.
6213                  */
6214                 if (prev_cbb->out_count == 1)
6215                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6216
6217                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6218                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6219
6220                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6221                         MonoBasicBlock *prev = ebblock->in_bb [0];
6222
6223                         if (prev->next_bb == ebblock) {
6224                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6225                                 cfg->cbb = prev;
6226                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6227                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6228                                         cfg->cbb = prev_cbb;
6229                                 }
6230                         } else {
6231                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6232                                 cfg->cbb = ebblock;
6233                         }
6234                 } else {
6235                         /*
6236                          * Its possible that the rvar is set in some prev bblock, but not in others.
6237                          * (#1835).
6238                          */
6239                         if (rvar) {
6240                                 MonoBasicBlock *bb;
6241
6242                                 for (i = 0; i < ebblock->in_count; ++i) {
6243                                         bb = ebblock->in_bb [i];
6244
6245                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6246                                                 cfg->cbb = bb;
6247
6248                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6249                                         }
6250                                 }
6251                         }
6252
6253                         cfg->cbb = ebblock;
6254                 }
6255
6256                 if (rvar) {
6257                         /*
6258                          * If the inlined method contains only a throw, then the ret var is not
6259                          * set, so set it to a dummy value.
6260                          */
6261                         if (!ret_var_set)
6262                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6263
6264                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6265                         *sp++ = ins;
6266                 }
6267                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6268                 return costs + 1;
6269         } else {
6270                 if (cfg->verbose_level > 2)
6271                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6272                 cfg->exception_type = MONO_EXCEPTION_NONE;
6273
6274                 /* This gets rid of the newly added bblocks */
6275                 cfg->cbb = prev_cbb;
6276         }
6277         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6278         return 0;
6279 }
6280
6281 /*
6282  * Some of these comments may well be out-of-date.
6283  * Design decisions: we do a single pass over the IL code (and we do bblock
6284  * splitting/merging in the few cases when it's required: a back jump to an IL
6285  * address that was not already seen as bblock starting point).
6286  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6287  * Complex operations are decomposed in simpler ones right away. We need to let the
6288  * arch-specific code peek and poke inside this process somehow (except when the
6289  * optimizations can take advantage of the full semantic info of coarse opcodes).
6290  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6291  * MonoInst->opcode initially is the IL opcode or some simplification of that
6292  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6293  * opcode with value bigger than OP_LAST.
6294  * At this point the IR can be handed over to an interpreter, a dumb code generator
6295  * or to the optimizing code generator that will translate it to SSA form.
6296  *
6297  * Profiling directed optimizations.
6298  * We may compile by default with few or no optimizations and instrument the code
6299  * or the user may indicate what methods to optimize the most either in a config file
6300  * or through repeated runs where the compiler applies offline the optimizations to
6301  * each method and then decides if it was worth it.
6302  */
6303
6304 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6305 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6306 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6307 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6308 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6309 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6310 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6311 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6312
6313 /* offset from br.s -> br like opcodes */
6314 #define BIG_BRANCH_OFFSET 13
6315
6316 static gboolean
6317 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6318 {
6319         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6320
6321         return b == NULL || b == bb;
6322 }
6323
6324 static int
6325 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6326 {
6327         unsigned char *ip = start;
6328         unsigned char *target;
6329         int i;
6330         guint cli_addr;
6331         MonoBasicBlock *bblock;
6332         const MonoOpcode *opcode;
6333
6334         while (ip < end) {
6335                 cli_addr = ip - start;
6336                 i = mono_opcode_value ((const guint8 **)&ip, end);
6337                 if (i < 0)
6338                         UNVERIFIED;
6339                 opcode = &mono_opcodes [i];
6340                 switch (opcode->argument) {
6341                 case MonoInlineNone:
6342                         ip++;
6343                         break;
6344                 case MonoInlineString:
6345                 case MonoInlineType:
6346                 case MonoInlineField:
6347                 case MonoInlineMethod:
6348                 case MonoInlineTok:
6349                 case MonoInlineSig:
6350                 case MonoShortInlineR:
6351                 case MonoInlineI:
6352                         ip += 5;
6353                         break;
6354                 case MonoInlineVar:
6355                         ip += 3;
6356                         break;
6357                 case MonoShortInlineVar:
6358                 case MonoShortInlineI:
6359                         ip += 2;
6360                         break;
6361                 case MonoShortInlineBrTarget:
6362                         target = start + cli_addr + 2 + (signed char)ip [1];
6363                         GET_BBLOCK (cfg, bblock, target);
6364                         ip += 2;
6365                         if (ip < end)
6366                                 GET_BBLOCK (cfg, bblock, ip);
6367                         break;
6368                 case MonoInlineBrTarget:
6369                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6370                         GET_BBLOCK (cfg, bblock, target);
6371                         ip += 5;
6372                         if (ip < end)
6373                                 GET_BBLOCK (cfg, bblock, ip);
6374                         break;
6375                 case MonoInlineSwitch: {
6376                         guint32 n = read32 (ip + 1);
6377                         guint32 j;
6378                         ip += 5;
6379                         cli_addr += 5 + 4 * n;
6380                         target = start + cli_addr;
6381                         GET_BBLOCK (cfg, bblock, target);
6382
6383                         for (j = 0; j < n; ++j) {
6384                                 target = start + cli_addr + (gint32)read32 (ip);
6385                                 GET_BBLOCK (cfg, bblock, target);
6386                                 ip += 4;
6387                         }
6388                         break;
6389                 }
6390                 case MonoInlineR:
6391                 case MonoInlineI8:
6392                         ip += 9;
6393                         break;
6394                 default:
6395                         g_assert_not_reached ();
6396                 }
6397
6398                 if (i == CEE_THROW) {
6399                         unsigned char *bb_start = ip - 1;
6400
6401                         /* Find the start of the bblock containing the throw */
6402                         bblock = NULL;
6403                         while ((bb_start >= start) && !bblock) {
6404                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6405                                 bb_start --;
6406                         }
6407                         if (bblock)
6408                                 bblock->out_of_line = 1;
6409                 }
6410         }
6411         return 0;
6412 unverified:
6413 exception_exit:
6414         *pos = ip;
6415         return 1;
6416 }
6417
6418 static inline MonoMethod *
6419 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6420 {
6421         MonoMethod *method;
6422
6423         error_init (error);
6424
6425         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6426                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6427                 if (context) {
6428                         method = mono_class_inflate_generic_method_checked (method, context, error);
6429                 }
6430         } else {
6431                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6432         }
6433
6434         return method;
6435 }
6436
6437 static inline MonoMethod *
6438 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6439 {
6440         MonoError error;
6441         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6442
6443         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6444                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6445                 method = NULL;
6446         }
6447
6448         if (!method && !cfg)
6449                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6450
6451         return method;
6452 }
6453
6454 static inline MonoMethodSignature*
6455 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6456 {
6457         MonoMethodSignature *fsig;
6458
6459         error_init (error);
6460         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6461                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6462         } else {
6463                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6464                 return_val_if_nok (error, NULL);
6465         }
6466         if (context) {
6467                 fsig = mono_inflate_generic_signature(fsig, context, error);
6468         }
6469         return fsig;
6470 }
6471
6472 static MonoMethod*
6473 throw_exception (void)
6474 {
6475         static MonoMethod *method = NULL;
6476
6477         if (!method) {
6478                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6479                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6480         }
6481         g_assert (method);
6482         return method;
6483 }
6484
6485 static void
6486 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6487 {
6488         MonoMethod *thrower = throw_exception ();
6489         MonoInst *args [1];
6490
6491         EMIT_NEW_PCONST (cfg, args [0], ex);
6492         mono_emit_method_call (cfg, thrower, args, NULL);
6493 }
6494
6495 /*
6496  * Return the original method is a wrapper is specified. We can only access
6497  * the custom attributes from the original method.
6498  */
6499 static MonoMethod*
6500 get_original_method (MonoMethod *method)
6501 {
6502         if (method->wrapper_type == MONO_WRAPPER_NONE)
6503                 return method;
6504
6505         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6506         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6507                 return NULL;
6508
6509         /* in other cases we need to find the original method */
6510         return mono_marshal_method_from_wrapper (method);
6511 }
6512
6513 static void
6514 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6515 {
6516         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6517         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6518         if (ex)
6519                 emit_throw_exception (cfg, ex);
6520 }
6521
6522 static void
6523 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6524 {
6525         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6526         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6527         if (ex)
6528                 emit_throw_exception (cfg, ex);
6529 }
6530
6531 /*
6532  * Check that the IL instructions at ip are the array initialization
6533  * sequence and return the pointer to the data and the size.
6534  */
6535 static const char*
6536 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6537 {
6538         /*
6539          * newarr[System.Int32]
6540          * dup
6541          * ldtoken field valuetype ...
6542          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6543          */
6544         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6545                 MonoError error;
6546                 guint32 token = read32 (ip + 7);
6547                 guint32 field_token = read32 (ip + 2);
6548                 guint32 field_index = field_token & 0xffffff;
6549                 guint32 rva;
6550                 const char *data_ptr;
6551                 int size = 0;
6552                 MonoMethod *cmethod;
6553                 MonoClass *dummy_class;
6554                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6555                 int dummy_align;
6556
6557                 if (!field) {
6558                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6559                         return NULL;
6560                 }
6561
6562                 *out_field_token = field_token;
6563
6564                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6565                 if (!cmethod)
6566                         return NULL;
6567                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6568                         return NULL;
6569                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6570                 case MONO_TYPE_I1:
6571                 case MONO_TYPE_U1:
6572                         size = 1; break;
6573                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6574 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6575                 case MONO_TYPE_I2:
6576                 case MONO_TYPE_U2:
6577                         size = 2; break;
6578                 case MONO_TYPE_I4:
6579                 case MONO_TYPE_U4:
6580                 case MONO_TYPE_R4:
6581                         size = 4; break;
6582                 case MONO_TYPE_R8:
6583                 case MONO_TYPE_I8:
6584                 case MONO_TYPE_U8:
6585                         size = 8; break;
6586 #endif
6587                 default:
6588                         return NULL;
6589                 }
6590                 size *= len;
6591                 if (size > mono_type_size (field->type, &dummy_align))
6592                     return NULL;
6593                 *out_size = size;
6594                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6595                 if (!image_is_dynamic (method->klass->image)) {
6596                         field_index = read32 (ip + 2) & 0xffffff;
6597                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6598                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6599                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6600                         /* for aot code we do the lookup on load */
6601                         if (aot && data_ptr)
6602                                 return (const char *)GUINT_TO_POINTER (rva);
6603                 } else {
6604                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6605                         g_assert (!aot);
6606                         data_ptr = mono_field_get_data (field);
6607                 }
6608                 return data_ptr;
6609         }
6610         return NULL;
6611 }
6612
6613 static void
6614 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6615 {
6616         MonoError error;
6617         char *method_fname = mono_method_full_name (method, TRUE);
6618         char *method_code;
6619         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6620
6621         if (!header) {
6622                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6623                 mono_error_cleanup (&error);
6624         } else if (header->code_size == 0)
6625                 method_code = g_strdup ("method body is empty.");
6626         else
6627                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6628         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6629         g_free (method_fname);
6630         g_free (method_code);
6631         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6632 }
6633
6634 static void
6635 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6636 {
6637         MonoInst *ins;
6638         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6639         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6640                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6641                 /* Optimize reg-reg moves away */
6642                 /*
6643                  * Can't optimize other opcodes, since sp[0] might point to
6644                  * the last ins of a decomposed opcode.
6645                  */
6646                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6647         } else {
6648                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6649         }
6650 }
6651
6652 /*
6653  * ldloca inhibits many optimizations so try to get rid of it in common
6654  * cases.
6655  */
6656 static inline unsigned char *
6657 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6658 {
6659         int local, token;
6660         MonoClass *klass;
6661         MonoType *type;
6662
6663         if (size == 1) {
6664                 local = ip [1];
6665                 ip += 2;
6666         } else {
6667                 local = read16 (ip + 2);
6668                 ip += 4;
6669         }
6670
6671         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6672                 /* From the INITOBJ case */
6673                 token = read32 (ip + 2);
6674                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6675                 CHECK_TYPELOAD (klass);
6676                 type = mini_get_underlying_type (&klass->byval_arg);
6677                 emit_init_local (cfg, local, type, TRUE);
6678                 return ip + 6;
6679         }
6680  exception_exit:
6681         return NULL;
6682 }
6683
6684 static MonoInst*
6685 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6686 {
6687         MonoInst *icall_args [16];
6688         MonoInst *call_target, *ins, *vtable_ins;
6689         int arg_reg, this_reg, vtable_reg;
6690         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6691         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6692         gboolean variant_iface = FALSE;
6693         guint32 slot;
6694         int offset;
6695         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6696
6697         /*
6698          * In llvm-only mode, vtables contain function descriptors instead of
6699          * method addresses/trampolines.
6700          */
6701         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6702
6703         if (is_iface)
6704                 slot = mono_method_get_imt_slot (cmethod);
6705         else
6706                 slot = mono_method_get_vtable_index (cmethod);
6707
6708         this_reg = sp [0]->dreg;
6709
6710         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6711                 variant_iface = TRUE;
6712
6713         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6714                 /*
6715                  * The simplest case, a normal virtual call.
6716                  */
6717                 int slot_reg = alloc_preg (cfg);
6718                 int addr_reg = alloc_preg (cfg);
6719                 int arg_reg = alloc_preg (cfg);
6720                 MonoBasicBlock *non_null_bb;
6721
6722                 vtable_reg = alloc_preg (cfg);
6723                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6724                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6725
6726                 /* Load the vtable slot, which contains a function descriptor. */
6727                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6728
6729                 NEW_BBLOCK (cfg, non_null_bb);
6730
6731                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6732                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6733                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6734
6735                 /* Slow path */
6736                 // FIXME: Make the wrapper use the preserveall cconv
6737                 // FIXME: Use one icall per slot for small slot numbers ?
6738                 icall_args [0] = vtable_ins;
6739                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6740                 /* Make the icall return the vtable slot value to save some code space */
6741                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6742                 ins->dreg = slot_reg;
6743                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6744
6745                 /* Fastpath */
6746                 MONO_START_BB (cfg, non_null_bb);
6747                 /* Load the address + arg from the vtable slot */
6748                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6749                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6750
6751                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6752         }
6753
6754         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6755                 /*
6756                  * A simple interface call
6757                  *
6758                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6759                  * The imt slot contains a function descriptor for a runtime function + arg.
6760                  */
6761                 int slot_reg = alloc_preg (cfg);
6762                 int addr_reg = alloc_preg (cfg);
6763                 int arg_reg = alloc_preg (cfg);
6764                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6765
6766                 vtable_reg = alloc_preg (cfg);
6767                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6768                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6769
6770                 /*
6771                  * The slot is already initialized when the vtable is created so there is no need
6772                  * to check it here.
6773                  */
6774
6775                 /* Load the imt slot, which contains a function descriptor. */
6776                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6777
6778                 /* Load the address + arg of the imt thunk from the imt slot */
6779                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6780                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6781                 /*
6782                  * IMT thunks in llvm-only mode are C functions which take an info argument
6783                  * plus the imt method and return the ftndesc to call.
6784                  */
6785                 icall_args [0] = thunk_arg_ins;
6786                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6787                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6788                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6789
6790                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6791         }
6792
6793         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6794                 /*
6795                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6796                  * dynamically extended as more instantiations are discovered.
6797                  * This handles generic virtual methods both on classes and interfaces.
6798                  */
6799                 int slot_reg = alloc_preg (cfg);
6800                 int addr_reg = alloc_preg (cfg);
6801                 int arg_reg = alloc_preg (cfg);
6802                 int ftndesc_reg = alloc_preg (cfg);
6803                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6804                 MonoBasicBlock *slowpath_bb, *end_bb;
6805
6806                 NEW_BBLOCK (cfg, slowpath_bb);
6807                 NEW_BBLOCK (cfg, end_bb);
6808
6809                 vtable_reg = alloc_preg (cfg);
6810                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6811                 if (is_iface)
6812                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6813                 else
6814                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6815
6816                 /* Load the slot, which contains a function descriptor. */
6817                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6818
6819                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6820                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6821                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6822                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6823
6824                 /* Fastpath */
6825                 /* Same as with iface calls */
6826                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6827                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6828                 icall_args [0] = thunk_arg_ins;
6829                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6830                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6831                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6832                 ftndesc_ins->dreg = ftndesc_reg;
6833                 /*
6834                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6835                  * they don't know about yet. Fall back to the slowpath in that case.
6836                  */
6837                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6838                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6839
6840                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6841
6842                 /* Slowpath */
6843                 MONO_START_BB (cfg, slowpath_bb);
6844                 icall_args [0] = vtable_ins;
6845                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6846                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6847                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6848                 if (is_iface)
6849                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6850                 else
6851                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6852                 ftndesc_ins->dreg = ftndesc_reg;
6853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6854
6855                 /* Common case */
6856                 MONO_START_BB (cfg, end_bb);
6857                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6858         }
6859
6860         /*
6861          * Non-optimized cases
6862          */
6863         icall_args [0] = sp [0];
6864         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6865
6866         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6867                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6868
6869         arg_reg = alloc_preg (cfg);
6870         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6871         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6872
6873         g_assert (is_gsharedvt);
6874         if (is_iface)
6875                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6876         else
6877                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6878
6879         /*
6880          * Pass the extra argument even if the callee doesn't receive it, most
6881          * calling conventions allow this.
6882          */
6883         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6884 }
6885
6886 static gboolean
6887 is_exception_class (MonoClass *klass)
6888 {
6889         while (klass) {
6890                 if (klass == mono_defaults.exception_class)
6891                         return TRUE;
6892                 klass = klass->parent;
6893         }
6894         return FALSE;
6895 }
6896
6897 /*
6898  * is_jit_optimizer_disabled:
6899  *
6900  *   Determine whenever M's assembly has a DebuggableAttribute with the
6901  * IsJITOptimizerDisabled flag set.
6902  */
6903 static gboolean
6904 is_jit_optimizer_disabled (MonoMethod *m)
6905 {
6906         MonoError error;
6907         MonoAssembly *ass = m->klass->image->assembly;
6908         MonoCustomAttrInfo* attrs;
6909         MonoClass *klass;
6910         int i;
6911         gboolean val = FALSE;
6912
6913         g_assert (ass);
6914         if (ass->jit_optimizer_disabled_inited)
6915                 return ass->jit_optimizer_disabled;
6916
6917         klass = mono_class_try_get_debuggable_attribute_class ();
6918
6919         if (!klass) {
6920                 /* Linked away */
6921                 ass->jit_optimizer_disabled = FALSE;
6922                 mono_memory_barrier ();
6923                 ass->jit_optimizer_disabled_inited = TRUE;
6924                 return FALSE;
6925         }
6926
6927         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6928         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6929         if (attrs) {
6930                 for (i = 0; i < attrs->num_attrs; ++i) {
6931                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6932                         const gchar *p;
6933                         MonoMethodSignature *sig;
6934
6935                         if (!attr->ctor || attr->ctor->klass != klass)
6936                                 continue;
6937                         /* Decode the attribute. See reflection.c */
6938                         p = (const char*)attr->data;
6939                         g_assert (read16 (p) == 0x0001);
6940                         p += 2;
6941
6942                         // FIXME: Support named parameters
6943                         sig = mono_method_signature (attr->ctor);
6944                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6945                                 continue;
6946                         /* Two boolean arguments */
6947                         p ++;
6948                         val = *p;
6949                 }
6950                 mono_custom_attrs_free (attrs);
6951         }
6952
6953         ass->jit_optimizer_disabled = val;
6954         mono_memory_barrier ();
6955         ass->jit_optimizer_disabled_inited = TRUE;
6956
6957         return val;
6958 }
6959
6960 static gboolean
6961 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
6962 {
6963         gboolean supported_tail_call;
6964         int i;
6965
6966         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
6967
6968         for (i = 0; i < fsig->param_count; ++i) {
6969                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6970                         /* These can point to the current method's stack */
6971                         supported_tail_call = FALSE;
6972         }
6973         if (fsig->hasthis && cmethod->klass->valuetype)
6974                 /* this might point to the current method's stack */
6975                 supported_tail_call = FALSE;
6976         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6977                 supported_tail_call = FALSE;
6978         if (cfg->method->save_lmf)
6979                 supported_tail_call = FALSE;
6980         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6981                 supported_tail_call = FALSE;
6982         if (call_opcode != CEE_CALL)
6983                 supported_tail_call = FALSE;
6984
6985         /* Debugging support */
6986 #if 0
6987         if (supported_tail_call) {
6988                 if (!mono_debug_count ())
6989                         supported_tail_call = FALSE;
6990         }
6991 #endif
6992
6993         return supported_tail_call;
6994 }
6995
6996 /*
6997  * handle_ctor_call:
6998  *
6999  *   Handle calls made to ctors from NEWOBJ opcodes.
7000  */
7001 static void
7002 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7003                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7004 {
7005         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7006
7007         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7008                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7009                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7010                         mono_class_vtable (cfg->domain, cmethod->klass);
7011                         CHECK_TYPELOAD (cmethod->klass);
7012
7013                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7014                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7015                 } else {
7016                         if (context_used) {
7017                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7018                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7019                         } else {
7020                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7021
7022                                 CHECK_TYPELOAD (cmethod->klass);
7023                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7024                         }
7025                 }
7026         }
7027
7028         /* Avoid virtual calls to ctors if possible */
7029         if (mono_class_is_marshalbyref (cmethod->klass))
7030                 callvirt_this_arg = sp [0];
7031
7032         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7033                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7034                 CHECK_CFG_EXCEPTION;
7035         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7036                            mono_method_check_inlining (cfg, cmethod) &&
7037                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7038                 int costs;
7039
7040                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7041                         cfg->real_offset += 5;
7042
7043                         *inline_costs += costs - 5;
7044                 } else {
7045                         INLINE_FAILURE ("inline failure");
7046                         // FIXME-VT: Clean this up
7047                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7048                                 GSHAREDVT_FAILURE(*ip);
7049                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7050                 }
7051         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7052                 MonoInst *addr;
7053
7054                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7055
7056                 if (cfg->llvm_only) {
7057                         // FIXME: Avoid initializing vtable_arg
7058                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7059                 } else {
7060                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7061                 }
7062         } else if (context_used &&
7063                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7064                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7065                 MonoInst *cmethod_addr;
7066
7067                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7068
7069                 if (cfg->llvm_only) {
7070                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7071                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7072                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7073                 } else {
7074                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7075                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7076
7077                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7078                 }
7079         } else {
7080                 INLINE_FAILURE ("ctor call");
7081                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7082                                                                                   callvirt_this_arg, NULL, vtable_arg);
7083         }
7084  exception_exit:
7085         return;
7086 }
7087
7088 static void
7089 emit_setret (MonoCompile *cfg, MonoInst *val)
7090 {
7091         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7092         MonoInst *ins;
7093
7094         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7095                 MonoInst *ret_addr;
7096
7097                 if (!cfg->vret_addr) {
7098                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7099                 } else {
7100                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7101
7102                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7103                         ins->klass = mono_class_from_mono_type (ret_type);
7104                 }
7105         } else {
7106 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7107                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7108                         MonoInst *iargs [1];
7109                         MonoInst *conv;
7110
7111                         iargs [0] = val;
7112                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7113                         mono_arch_emit_setret (cfg, cfg->method, conv);
7114                 } else {
7115                         mono_arch_emit_setret (cfg, cfg->method, val);
7116                 }
7117 #else
7118                 mono_arch_emit_setret (cfg, cfg->method, val);
7119 #endif
7120         }
7121 }
7122
7123 /*
7124  * mono_method_to_ir:
7125  *
7126  * Translate the .net IL into linear IR.
7127  *
7128  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7129  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7130  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7131  * @inline_args: if not NULL, contains the arguments to the inline call
7132  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7133  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7134  *
7135  * This method is used to turn ECMA IL into Mono's internal Linear IR
7136  * reprensetation.  It is used both for entire methods, as well as
7137  * inlining existing methods.  In the former case, the @start_bblock,
7138  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7139  * inline_offset is set to zero.
7140  *
7141  * Returns: the inline cost, or -1 if there was an error processing this method.
7142  */
7143 int
7144 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7145                    MonoInst *return_var, MonoInst **inline_args,
7146                    guint inline_offset, gboolean is_virtual_call)
7147 {
7148         MonoError error;
7149         MonoInst *ins, **sp, **stack_start;
7150         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7151         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7152         MonoMethod *cmethod, *method_definition;
7153         MonoInst **arg_array;
7154         MonoMethodHeader *header;
7155         MonoImage *image;
7156         guint32 token, ins_flag;
7157         MonoClass *klass;
7158         MonoClass *constrained_class = NULL;
7159         unsigned char *ip, *end, *target, *err_pos;
7160         MonoMethodSignature *sig;
7161         MonoGenericContext *generic_context = NULL;
7162         MonoGenericContainer *generic_container = NULL;
7163         MonoType **param_types;
7164         int i, n, start_new_bblock, dreg;
7165         int num_calls = 0, inline_costs = 0;
7166         int breakpoint_id = 0;
7167         guint num_args;
7168         GSList *class_inits = NULL;
7169         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7170         int context_used;
7171         gboolean init_locals, seq_points, skip_dead_blocks;
7172         gboolean sym_seq_points = FALSE;
7173         MonoDebugMethodInfo *minfo;
7174         MonoBitSet *seq_point_locs = NULL;
7175         MonoBitSet *seq_point_set_locs = NULL;
7176
7177         cfg->disable_inline = is_jit_optimizer_disabled (method);
7178
7179         /* serialization and xdomain stuff may need access to private fields and methods */
7180         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7182         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7183         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7185         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7186
7187         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7188         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7191         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7192
7193         image = method->klass->image;
7194         header = mono_method_get_header_checked (method, &cfg->error);
7195         if (!header) {
7196                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7197                 goto exception_exit;
7198         } else {
7199                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7200         }
7201
7202         generic_container = mono_method_get_generic_container (method);
7203         sig = mono_method_signature (method);
7204         num_args = sig->hasthis + sig->param_count;
7205         ip = (unsigned char*)header->code;
7206         cfg->cil_start = ip;
7207         end = ip + header->code_size;
7208         cfg->stat_cil_code_size += header->code_size;
7209
7210         seq_points = cfg->gen_seq_points && cfg->method == method;
7211
7212         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7213                 /* We could hit a seq point before attaching to the JIT (#8338) */
7214                 seq_points = FALSE;
7215         }
7216
7217         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7218                 minfo = mono_debug_lookup_method (method);
7219                 if (minfo) {
7220                         MonoSymSeqPoint *sps;
7221                         int i, n_il_offsets;
7222
7223                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7224                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7225                         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);
7226                         sym_seq_points = TRUE;
7227                         for (i = 0; i < n_il_offsets; ++i) {
7228                                 if (sps [i].il_offset < header->code_size)
7229                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7230                         }
7231                         g_free (sps);
7232
7233                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7234                         if (asyncMethod) {
7235                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7236                                 {
7237                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7238                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7239                                 }
7240                                 mono_debug_free_method_async_debug_info (asyncMethod);
7241                         }
7242                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7243                         /* Methods without line number info like auto-generated property accessors */
7244                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7245                         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);
7246                         sym_seq_points = TRUE;
7247                 }
7248         }
7249
7250         /*
7251          * Methods without init_locals set could cause asserts in various passes
7252          * (#497220). To work around this, we emit dummy initialization opcodes
7253          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7254          * on some platforms.
7255          */
7256         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7257                 init_locals = header->init_locals;
7258         else
7259                 init_locals = TRUE;
7260
7261         method_definition = method;
7262         while (method_definition->is_inflated) {
7263                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7264                 method_definition = imethod->declaring;
7265         }
7266
7267         /* SkipVerification is not allowed if core-clr is enabled */
7268         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7269                 dont_verify = TRUE;
7270                 dont_verify_stloc = TRUE;
7271         }
7272
7273         if (sig->is_inflated)
7274                 generic_context = mono_method_get_context (method);
7275         else if (generic_container)
7276                 generic_context = &generic_container->context;
7277         cfg->generic_context = generic_context;
7278
7279         if (!cfg->gshared)
7280                 g_assert (!sig->has_type_parameters);
7281
7282         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7283                 g_assert (method->is_inflated);
7284                 g_assert (mono_method_get_context (method)->method_inst);
7285         }
7286         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7287                 g_assert (sig->generic_param_count);
7288
7289         if (cfg->method == method) {
7290                 cfg->real_offset = 0;
7291         } else {
7292                 cfg->real_offset = inline_offset;
7293         }
7294
7295         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7296         cfg->cil_offset_to_bb_len = header->code_size;
7297
7298         cfg->current_method = method;
7299
7300         if (cfg->verbose_level > 2)
7301                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7302
7303         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7304         if (sig->hasthis)
7305                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7306         for (n = 0; n < sig->param_count; ++n)
7307                 param_types [n + sig->hasthis] = sig->params [n];
7308         cfg->arg_types = param_types;
7309
7310         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7311         if (cfg->method == method) {
7312
7313                 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7314
7315                 /* ENTRY BLOCK */
7316                 NEW_BBLOCK (cfg, start_bblock);
7317                 cfg->bb_entry = start_bblock;
7318                 start_bblock->cil_code = NULL;
7319                 start_bblock->cil_length = 0;
7320
7321                 /* EXIT BLOCK */
7322                 NEW_BBLOCK (cfg, end_bblock);
7323                 cfg->bb_exit = end_bblock;
7324                 end_bblock->cil_code = NULL;
7325                 end_bblock->cil_length = 0;
7326                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7327                 g_assert (cfg->num_bblocks == 2);
7328
7329                 arg_array = cfg->args;
7330
7331                 if (header->num_clauses) {
7332                         cfg->spvars = g_hash_table_new (NULL, NULL);
7333                         cfg->exvars = g_hash_table_new (NULL, NULL);
7334                 }
7335                 /* handle exception clauses */
7336                 for (i = 0; i < header->num_clauses; ++i) {
7337                         MonoBasicBlock *try_bb;
7338                         MonoExceptionClause *clause = &header->clauses [i];
7339                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7340
7341                         try_bb->real_offset = clause->try_offset;
7342                         try_bb->try_start = TRUE;
7343                         try_bb->region = ((i + 1) << 8) | clause->flags;
7344                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7345                         tblock->real_offset = clause->handler_offset;
7346                         tblock->flags |= BB_EXCEPTION_HANDLER;
7347
7348                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
7349                                 mono_create_exvar_for_offset (cfg, clause->handler_offset);
7350                         /*
7351                          * Linking the try block with the EH block hinders inlining as we won't be able to
7352                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7353                          */
7354                         if (COMPILE_LLVM (cfg))
7355                                 link_bblock (cfg, try_bb, tblock);
7356
7357                         if (*(ip + clause->handler_offset) == CEE_POP)
7358                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7359
7360                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7361                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7362                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7363                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7364                                 MONO_ADD_INS (tblock, ins);
7365
7366                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7367                                         /* finally clauses already have a seq point */
7368                                         /* seq points for filter clauses are emitted below */
7369                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7370                                         MONO_ADD_INS (tblock, ins);
7371                                 }
7372
7373                                 /* todo: is a fault block unsafe to optimize? */
7374                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7375                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7376                         }
7377
7378                         /*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);
7379                           while (p < end) {
7380                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7381                           }*/
7382                         /* catch and filter blocks get the exception object on the stack */
7383                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7384                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7385
7386                                 /* mostly like handle_stack_args (), but just sets the input args */
7387                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7388                                 tblock->in_scount = 1;
7389                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7390                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7391
7392                                 cfg->cbb = tblock;
7393
7394 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7395                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7396                                 if (!cfg->compile_llvm) {
7397                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7398                                         ins->dreg = tblock->in_stack [0]->dreg;
7399                                         MONO_ADD_INS (tblock, ins);
7400                                 }
7401 #else
7402                                 MonoInst *dummy_use;
7403
7404                                 /*
7405                                  * Add a dummy use for the exvar so its liveness info will be
7406                                  * correct.
7407                                  */
7408                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7409 #endif
7410
7411                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7412                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7413                                         MONO_ADD_INS (tblock, ins);
7414                                 }
7415
7416                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7417                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7418                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7419                                         tblock->real_offset = clause->data.filter_offset;
7420                                         tblock->in_scount = 1;
7421                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7422                                         /* The filter block shares the exvar with the handler block */
7423                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7424                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7425                                         MONO_ADD_INS (tblock, ins);
7426                                 }
7427                         }
7428
7429                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7430                                         clause->data.catch_class &&
7431                                         cfg->gshared &&
7432                                         mono_class_check_context_used (clause->data.catch_class)) {
7433                                 /*
7434                                  * In shared generic code with catch
7435                                  * clauses containing type variables
7436                                  * the exception handling code has to
7437                                  * be able to get to the rgctx.
7438                                  * Therefore we have to make sure that
7439                                  * the vtable/mrgctx argument (for
7440                                  * static or generic methods) or the
7441                                  * "this" argument (for non-static
7442                                  * methods) are live.
7443                                  */
7444                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7445                                                 mini_method_get_context (method)->method_inst ||
7446                                                 method->klass->valuetype) {
7447                                         mono_get_vtable_var (cfg);
7448                                 } else {
7449                                         MonoInst *dummy_use;
7450
7451                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7452                                 }
7453                         }
7454                 }
7455         } else {
7456                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7457                 cfg->cbb = start_bblock;
7458                 cfg->args = arg_array;
7459                 mono_save_args (cfg, sig, inline_args);
7460         }
7461
7462         /* FIRST CODE BLOCK */
7463         NEW_BBLOCK (cfg, tblock);
7464         tblock->cil_code = ip;
7465         cfg->cbb = tblock;
7466         cfg->ip = ip;
7467
7468         ADD_BBLOCK (cfg, tblock);
7469
7470         if (cfg->method == method) {
7471                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7472                 if (breakpoint_id) {
7473                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7474                         MONO_ADD_INS (cfg->cbb, ins);
7475                 }
7476         }
7477
7478         /* we use a separate basic block for the initialization code */
7479         NEW_BBLOCK (cfg, init_localsbb);
7480         if (cfg->method == method)
7481                 cfg->bb_init = init_localsbb;
7482         init_localsbb->real_offset = cfg->real_offset;
7483         start_bblock->next_bb = init_localsbb;
7484         init_localsbb->next_bb = cfg->cbb;
7485         link_bblock (cfg, start_bblock, init_localsbb);
7486         link_bblock (cfg, init_localsbb, cfg->cbb);
7487
7488         cfg->cbb = init_localsbb;
7489
7490         if (cfg->gsharedvt && cfg->method == method) {
7491                 MonoGSharedVtMethodInfo *info;
7492                 MonoInst *var, *locals_var;
7493                 int dreg;
7494
7495                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7496                 info->method = cfg->method;
7497                 info->count_entries = 16;
7498                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7499                 cfg->gsharedvt_info = info;
7500
7501                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7502                 /* prevent it from being register allocated */
7503                 //var->flags |= MONO_INST_VOLATILE;
7504                 cfg->gsharedvt_info_var = var;
7505
7506                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7507                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7508
7509                 /* Allocate locals */
7510                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7511                 /* prevent it from being register allocated */
7512                 //locals_var->flags |= MONO_INST_VOLATILE;
7513                 cfg->gsharedvt_locals_var = locals_var;
7514
7515                 dreg = alloc_ireg (cfg);
7516                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7517
7518                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7519                 ins->dreg = locals_var->dreg;
7520                 ins->sreg1 = dreg;
7521                 MONO_ADD_INS (cfg->cbb, ins);
7522                 cfg->gsharedvt_locals_var_ins = ins;
7523
7524                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7525                 /*
7526                 if (init_locals)
7527                         ins->flags |= MONO_INST_INIT;
7528                 */
7529         }
7530
7531         if (mono_security_core_clr_enabled ()) {
7532                 /* check if this is native code, e.g. an icall or a p/invoke */
7533                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7534                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7535                         if (wrapped) {
7536                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7537                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7538
7539                                 /* if this ia a native call then it can only be JITted from platform code */
7540                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7541                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7542                                                 MonoException *ex = icall ? mono_get_exception_security () :
7543                                                         mono_get_exception_method_access ();
7544                                                 emit_throw_exception (cfg, ex);
7545                                         }
7546                                 }
7547                         }
7548                 }
7549         }
7550
7551         CHECK_CFG_EXCEPTION;
7552
7553         if (header->code_size == 0)
7554                 UNVERIFIED;
7555
7556         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7557                 ip = err_pos;
7558                 UNVERIFIED;
7559         }
7560
7561         if (cfg->method == method)
7562                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7563
7564         for (n = 0; n < header->num_locals; ++n) {
7565                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7566                         UNVERIFIED;
7567         }
7568         class_inits = NULL;
7569
7570         /* We force the vtable variable here for all shared methods
7571            for the possibility that they might show up in a stack
7572            trace where their exact instantiation is needed. */
7573         if (cfg->gshared && method == cfg->method) {
7574                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7575                                 mini_method_get_context (method)->method_inst ||
7576                                 method->klass->valuetype) {
7577                         mono_get_vtable_var (cfg);
7578                 } else {
7579                         /* FIXME: Is there a better way to do this?
7580                            We need the variable live for the duration
7581                            of the whole method. */
7582                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7583                 }
7584         }
7585
7586         /* add a check for this != NULL to inlined methods */
7587         if (is_virtual_call) {
7588                 MonoInst *arg_ins;
7589
7590                 NEW_ARGLOAD (cfg, arg_ins, 0);
7591                 MONO_ADD_INS (cfg->cbb, arg_ins);
7592                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7593         }
7594
7595         skip_dead_blocks = !dont_verify;
7596         if (skip_dead_blocks) {
7597                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7598                 CHECK_CFG_ERROR;
7599                 g_assert (bb);
7600         }
7601
7602         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7603         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7604
7605         ins_flag = 0;
7606         start_new_bblock = 0;
7607         while (ip < end) {
7608                 if (cfg->method == method)
7609                         cfg->real_offset = ip - header->code;
7610                 else
7611                         cfg->real_offset = inline_offset;
7612                 cfg->ip = ip;
7613
7614                 context_used = 0;
7615
7616                 if (start_new_bblock) {
7617                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7618                         if (start_new_bblock == 2) {
7619                                 g_assert (ip == tblock->cil_code);
7620                         } else {
7621                                 GET_BBLOCK (cfg, tblock, ip);
7622                         }
7623                         cfg->cbb->next_bb = tblock;
7624                         cfg->cbb = tblock;
7625                         start_new_bblock = 0;
7626                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7627                                 if (cfg->verbose_level > 3)
7628                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7629                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7630                                 *sp++ = ins;
7631                         }
7632                         if (class_inits)
7633                                 g_slist_free (class_inits);
7634                         class_inits = NULL;
7635                 } else {
7636                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7637                                 link_bblock (cfg, cfg->cbb, tblock);
7638                                 if (sp != stack_start) {
7639                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7640                                         sp = stack_start;
7641                                         CHECK_UNVERIFIABLE (cfg);
7642                                 }
7643                                 cfg->cbb->next_bb = tblock;
7644                                 cfg->cbb = tblock;
7645                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7646                                         if (cfg->verbose_level > 3)
7647                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7648                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7649                                         *sp++ = ins;
7650                                 }
7651                                 g_slist_free (class_inits);
7652                                 class_inits = NULL;
7653                         }
7654                 }
7655
7656                 if (skip_dead_blocks) {
7657                         int ip_offset = ip - header->code;
7658
7659                         if (ip_offset == bb->end)
7660                                 bb = bb->next;
7661
7662                         if (bb->dead) {
7663                                 int op_size = mono_opcode_size (ip, end);
7664                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7665
7666                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7667
7668                                 if (ip_offset + op_size == bb->end) {
7669                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7670                                         MONO_ADD_INS (cfg->cbb, ins);
7671                                         start_new_bblock = 1;
7672                                 }
7673
7674                                 ip += op_size;
7675                                 continue;
7676                         }
7677                 }
7678                 /*
7679                  * Sequence points are points where the debugger can place a breakpoint.
7680                  * Currently, we generate these automatically at points where the IL
7681                  * stack is empty.
7682                  */
7683                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7684                         /*
7685                          * Make methods interruptable at the beginning, and at the targets of
7686                          * backward branches.
7687                          * Also, do this at the start of every bblock in methods with clauses too,
7688                          * to be able to handle instructions with inprecise control flow like
7689                          * throw/endfinally.
7690                          * Backward branches are handled at the end of method-to-ir ().
7691                          */
7692                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7693                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7694
7695                         /* Avoid sequence points on empty IL like .volatile */
7696                         // FIXME: Enable this
7697                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7698                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7699                         if ((sp != stack_start) && !sym_seq_point)
7700                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7701                         MONO_ADD_INS (cfg->cbb, ins);
7702
7703                         if (sym_seq_points)
7704                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7705                 }
7706
7707                 cfg->cbb->real_offset = cfg->real_offset;
7708
7709                 if ((cfg->method == method) && cfg->coverage_info) {
7710                         guint32 cil_offset = ip - header->code;
7711                         gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7712                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7713
7714                         if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7715                                 MonoInst *one_ins, *load_ins;
7716
7717                                 EMIT_NEW_PCONST (cfg, load_ins, counter);
7718                                 EMIT_NEW_ICONST (cfg, one_ins, 1);
7719                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7720                                 ins->dreg = mono_alloc_ireg (cfg);
7721                                 ins->inst_basereg = load_ins->dreg;
7722                                 ins->inst_offset = 0;
7723                                 ins->sreg2 = one_ins->dreg;
7724                                 ins->type = STACK_I4;
7725                                 MONO_ADD_INS (cfg->cbb, ins);
7726                         } else {
7727                                 EMIT_NEW_PCONST (cfg, ins, counter);
7728                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7729                         }
7730                 }
7731
7732                 if (cfg->verbose_level > 3)
7733                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7734
7735                 switch (*ip) {
7736                 case CEE_NOP:
7737                         if (seq_points && !sym_seq_points && sp != stack_start) {
7738                                 /*
7739                                  * The C# compiler uses these nops to notify the JIT that it should
7740                                  * insert seq points.
7741                                  */
7742                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7743                                 MONO_ADD_INS (cfg->cbb, ins);
7744                         }
7745                         if (cfg->keep_cil_nops)
7746                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7747                         else
7748                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7749                         ip++;
7750                         MONO_ADD_INS (cfg->cbb, ins);
7751                         break;
7752                 case CEE_BREAK:
7753                         if (mini_should_insert_breakpoint (cfg->method)) {
7754                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7755                         } else {
7756                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7757                         }
7758                         ip++;
7759                         MONO_ADD_INS (cfg->cbb, ins);
7760                         break;
7761                 case CEE_LDARG_0:
7762                 case CEE_LDARG_1:
7763                 case CEE_LDARG_2:
7764                 case CEE_LDARG_3:
7765                         CHECK_STACK_OVF (1);
7766                         n = (*ip)-CEE_LDARG_0;
7767                         CHECK_ARG (n);
7768                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7769                         ip++;
7770                         *sp++ = ins;
7771                         break;
7772                 case CEE_LDLOC_0:
7773                 case CEE_LDLOC_1:
7774                 case CEE_LDLOC_2:
7775                 case CEE_LDLOC_3:
7776                         CHECK_STACK_OVF (1);
7777                         n = (*ip)-CEE_LDLOC_0;
7778                         CHECK_LOCAL (n);
7779                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7780                         ip++;
7781                         *sp++ = ins;
7782                         break;
7783                 case CEE_STLOC_0:
7784                 case CEE_STLOC_1:
7785                 case CEE_STLOC_2:
7786                 case CEE_STLOC_3: {
7787                         CHECK_STACK (1);
7788                         n = (*ip)-CEE_STLOC_0;
7789                         CHECK_LOCAL (n);
7790                         --sp;
7791                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7792                                 UNVERIFIED;
7793                         emit_stloc_ir (cfg, sp, header, n);
7794                         ++ip;
7795                         inline_costs += 1;
7796                         break;
7797                         }
7798                 case CEE_LDARG_S:
7799                         CHECK_OPSIZE (2);
7800                         CHECK_STACK_OVF (1);
7801                         n = ip [1];
7802                         CHECK_ARG (n);
7803                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7804                         *sp++ = ins;
7805                         ip += 2;
7806                         break;
7807                 case CEE_LDARGA_S:
7808                         CHECK_OPSIZE (2);
7809                         CHECK_STACK_OVF (1);
7810                         n = ip [1];
7811                         CHECK_ARG (n);
7812                         NEW_ARGLOADA (cfg, ins, n);
7813                         MONO_ADD_INS (cfg->cbb, ins);
7814                         *sp++ = ins;
7815                         ip += 2;
7816                         break;
7817                 case CEE_STARG_S:
7818                         CHECK_OPSIZE (2);
7819                         CHECK_STACK (1);
7820                         --sp;
7821                         n = ip [1];
7822                         CHECK_ARG (n);
7823                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7824                                 UNVERIFIED;
7825                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7826                         ip += 2;
7827                         break;
7828                 case CEE_LDLOC_S:
7829                         CHECK_OPSIZE (2);
7830                         CHECK_STACK_OVF (1);
7831                         n = ip [1];
7832                         CHECK_LOCAL (n);
7833                         if ((ip [2] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 2) && MONO_TYPE_ISSTRUCT (header->locals [n])) {
7834                                 /* Avoid loading a struct just to load one of its fields */
7835                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
7836                         } else {
7837                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
7838                         }
7839                         *sp++ = ins;
7840                         ip += 2;
7841                         break;
7842                 case CEE_LDLOCA_S: {
7843                         unsigned char *tmp_ip;
7844                         CHECK_OPSIZE (2);
7845                         CHECK_STACK_OVF (1);
7846                         CHECK_LOCAL (ip [1]);
7847
7848                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7849                                 ip = tmp_ip;
7850                                 inline_costs += 1;
7851                                 break;
7852                         }
7853
7854                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7855                         *sp++ = ins;
7856                         ip += 2;
7857                         break;
7858                 }
7859                 case CEE_STLOC_S:
7860                         CHECK_OPSIZE (2);
7861                         CHECK_STACK (1);
7862                         --sp;
7863                         CHECK_LOCAL (ip [1]);
7864                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7865                                 UNVERIFIED;
7866                         emit_stloc_ir (cfg, sp, header, ip [1]);
7867                         ip += 2;
7868                         inline_costs += 1;
7869                         break;
7870                 case CEE_LDNULL:
7871                         CHECK_STACK_OVF (1);
7872                         EMIT_NEW_PCONST (cfg, ins, NULL);
7873                         ins->type = STACK_OBJ;
7874                         ++ip;
7875                         *sp++ = ins;
7876                         break;
7877                 case CEE_LDC_I4_M1:
7878                         CHECK_STACK_OVF (1);
7879                         EMIT_NEW_ICONST (cfg, ins, -1);
7880                         ++ip;
7881                         *sp++ = ins;
7882                         break;
7883                 case CEE_LDC_I4_0:
7884                 case CEE_LDC_I4_1:
7885                 case CEE_LDC_I4_2:
7886                 case CEE_LDC_I4_3:
7887                 case CEE_LDC_I4_4:
7888                 case CEE_LDC_I4_5:
7889                 case CEE_LDC_I4_6:
7890                 case CEE_LDC_I4_7:
7891                 case CEE_LDC_I4_8:
7892                         CHECK_STACK_OVF (1);
7893                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7894                         ++ip;
7895                         *sp++ = ins;
7896                         break;
7897                 case CEE_LDC_I4_S:
7898                         CHECK_OPSIZE (2);
7899                         CHECK_STACK_OVF (1);
7900                         ++ip;
7901                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7902                         ++ip;
7903                         *sp++ = ins;
7904                         break;
7905                 case CEE_LDC_I4:
7906                         CHECK_OPSIZE (5);
7907                         CHECK_STACK_OVF (1);
7908                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7909                         ip += 5;
7910                         *sp++ = ins;
7911                         break;
7912                 case CEE_LDC_I8:
7913                         CHECK_OPSIZE (9);
7914                         CHECK_STACK_OVF (1);
7915                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7916                         ins->type = STACK_I8;
7917                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7918                         ++ip;
7919                         ins->inst_l = (gint64)read64 (ip);
7920                         MONO_ADD_INS (cfg->cbb, ins);
7921                         ip += 8;
7922                         *sp++ = ins;
7923                         break;
7924                 case CEE_LDC_R4: {
7925                         float *f;
7926                         gboolean use_aotconst = FALSE;
7927
7928 #ifdef TARGET_POWERPC
7929                         /* FIXME: Clean this up */
7930                         if (cfg->compile_aot)
7931                                 use_aotconst = TRUE;
7932 #endif
7933
7934                         /* FIXME: we should really allocate this only late in the compilation process */
7935                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7936                         CHECK_OPSIZE (5);
7937                         CHECK_STACK_OVF (1);
7938
7939                         if (use_aotconst) {
7940                                 MonoInst *cons;
7941                                 int dreg;
7942
7943                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7944
7945                                 dreg = alloc_freg (cfg);
7946                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7947                                 ins->type = cfg->r4_stack_type;
7948                         } else {
7949                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7950                                 ins->type = cfg->r4_stack_type;
7951                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7952                                 ins->inst_p0 = f;
7953                                 MONO_ADD_INS (cfg->cbb, ins);
7954                         }
7955                         ++ip;
7956                         readr4 (ip, f);
7957                         ip += 4;
7958                         *sp++ = ins;
7959                         break;
7960                 }
7961                 case CEE_LDC_R8: {
7962                         double *d;
7963                         gboolean use_aotconst = FALSE;
7964
7965 #ifdef TARGET_POWERPC
7966                         /* FIXME: Clean this up */
7967                         if (cfg->compile_aot)
7968                                 use_aotconst = TRUE;
7969 #endif
7970
7971                         /* FIXME: we should really allocate this only late in the compilation process */
7972                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
7973                         CHECK_OPSIZE (9);
7974                         CHECK_STACK_OVF (1);
7975
7976                         if (use_aotconst) {
7977                                 MonoInst *cons;
7978                                 int dreg;
7979
7980                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7981
7982                                 dreg = alloc_freg (cfg);
7983                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7984                                 ins->type = STACK_R8;
7985                         } else {
7986                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7987                                 ins->type = STACK_R8;
7988                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7989                                 ins->inst_p0 = d;
7990                                 MONO_ADD_INS (cfg->cbb, ins);
7991                         }
7992                         ++ip;
7993                         readr8 (ip, d);
7994                         ip += 8;
7995                         *sp++ = ins;
7996                         break;
7997                 }
7998                 case CEE_DUP: {
7999                         MonoInst *temp, *store;
8000                         CHECK_STACK (1);
8001                         CHECK_STACK_OVF (1);
8002                         sp--;
8003                         ins = *sp;
8004
8005                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8006                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8007
8008                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8009                         *sp++ = ins;
8010
8011                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8012                         *sp++ = ins;
8013
8014                         ++ip;
8015                         inline_costs += 2;
8016                         break;
8017                 }
8018                 case CEE_POP:
8019                         CHECK_STACK (1);
8020                         ip++;
8021                         --sp;
8022
8023 #ifdef TARGET_X86
8024                         if (sp [0]->type == STACK_R8)
8025                                 /* we need to pop the value from the x86 FP stack */
8026                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8027 #endif
8028                         break;
8029                 case CEE_JMP: {
8030                         MonoCallInst *call;
8031                         MonoMethodSignature *fsig;
8032                         int i, n;
8033
8034                         INLINE_FAILURE ("jmp");
8035                         GSHAREDVT_FAILURE (*ip);
8036
8037                         CHECK_OPSIZE (5);
8038                         if (stack_start != sp)
8039                                 UNVERIFIED;
8040                         token = read32 (ip + 1);
8041                         /* FIXME: check the signature matches */
8042                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8043                         CHECK_CFG_ERROR;
8044
8045                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8046                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8047
8048                         emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
8049
8050                         fsig = mono_method_signature (cmethod);
8051                         n = fsig->param_count + fsig->hasthis;
8052                         if (cfg->llvm_only) {
8053                                 MonoInst **args;
8054
8055                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8056                                 for (i = 0; i < n; ++i)
8057                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8058                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8059                                 /*
8060                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8061                                  * have to emit a normal return since llvm expects it.
8062                                  */
8063                                 if (cfg->ret)
8064                                         emit_setret (cfg, ins);
8065                                 MONO_INST_NEW (cfg, ins, OP_BR);
8066                                 ins->inst_target_bb = end_bblock;
8067                                 MONO_ADD_INS (cfg->cbb, ins);
8068                                 link_bblock (cfg, cfg->cbb, end_bblock);
8069                                 ip += 5;
8070                                 break;
8071                         } else if (cfg->backend->have_op_tail_call) {
8072                                 /* Handle tail calls similarly to calls */
8073                                 DISABLE_AOT (cfg);
8074
8075                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8076                                 call->method = cmethod;
8077                                 call->tail_call = TRUE;
8078                                 call->signature = mono_method_signature (cmethod);
8079                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8080                                 call->inst.inst_p0 = cmethod;
8081                                 for (i = 0; i < n; ++i)
8082                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8083
8084                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8085                                         call->vret_var = cfg->vret_addr;
8086
8087                                 mono_arch_emit_call (cfg, call);
8088                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8089                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8090                         } else {
8091                                 for (i = 0; i < num_args; ++i)
8092                                         /* Prevent arguments from being optimized away */
8093                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8094
8095                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8096                                 ins = (MonoInst*)call;
8097                                 ins->inst_p0 = cmethod;
8098                                 MONO_ADD_INS (cfg->cbb, ins);
8099                         }
8100
8101                         ip += 5;
8102                         start_new_bblock = 1;
8103                         break;
8104                 }
8105                 case CEE_CALLI: {
8106                         MonoInst *addr;
8107                         MonoMethodSignature *fsig;
8108
8109                         CHECK_OPSIZE (5);
8110                         token = read32 (ip + 1);
8111
8112                         ins = NULL;
8113
8114                         //GSHAREDVT_FAILURE (*ip);
8115                         cmethod = NULL;
8116                         CHECK_STACK (1);
8117                         --sp;
8118                         addr = *sp;
8119                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8120                         CHECK_CFG_ERROR;
8121
8122                         if (method->dynamic && fsig->pinvoke) {
8123                                 MonoInst *args [3];
8124
8125                                 /*
8126                                  * This is a call through a function pointer using a pinvoke
8127                                  * signature. Have to create a wrapper and call that instead.
8128                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8129                                  * instead based on the signature.
8130                                  */
8131                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8132                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8133                                 args [2] = addr;
8134                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8135                         }
8136
8137                         n = fsig->param_count + fsig->hasthis;
8138
8139                         CHECK_STACK (n);
8140
8141                         //g_assert (!virtual_ || fsig->hasthis);
8142
8143                         sp -= n;
8144
8145                         inline_costs += 10 * num_calls++;
8146
8147                         /*
8148                          * Making generic calls out of gsharedvt methods.
8149                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8150                          * patching gshared method addresses into a gsharedvt method.
8151                          */
8152                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8153                                 /*
8154                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8155                                  */
8156                                 MonoInst *callee = addr;
8157
8158                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8159                                         /* Not tested */
8160                                         GSHAREDVT_FAILURE (*ip);
8161
8162                                 if (cfg->llvm_only)
8163                                         // FIXME:
8164                                         GSHAREDVT_FAILURE (*ip);
8165
8166                                 addr = emit_get_rgctx_sig (cfg, context_used,
8167                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8168                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8169                                 goto calli_end;
8170                         }
8171
8172                         /* Prevent inlining of methods with indirect calls */
8173                         INLINE_FAILURE ("indirect call");
8174
8175                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8176                                 MonoJumpInfoType info_type;
8177                                 gpointer info_data;
8178
8179                                 /*
8180                                  * Instead of emitting an indirect call, emit a direct call
8181                                  * with the contents of the aotconst as the patch info.
8182                                  */
8183                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8184                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8185                                         info_data = addr->inst_p0;
8186                                 } else {
8187                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8188                                         info_data = addr->inst_right->inst_left;
8189                                 }
8190
8191                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8192                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8193                                         NULLIFY_INS (addr);
8194                                         goto calli_end;
8195                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8196                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8197                                         NULLIFY_INS (addr);
8198                                         goto calli_end;
8199                                 }
8200                         }
8201                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8202
8203                         calli_end:
8204
8205                         /* End of call, INS should contain the result of the call, if any */
8206
8207                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8208                                 g_assert (ins);
8209                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8210                         }
8211
8212                         CHECK_CFG_EXCEPTION;
8213
8214                         ip += 5;
8215                         ins_flag = 0;
8216                         constrained_class = NULL;
8217                         break;
8218                 }
8219                 case CEE_CALL:
8220                 case CEE_CALLVIRT: {
8221                         MonoInst *addr = NULL;
8222                         MonoMethodSignature *fsig = NULL;
8223                         int array_rank = 0;
8224                         int virtual_ = *ip == CEE_CALLVIRT;
8225                         gboolean pass_imt_from_rgctx = FALSE;
8226                         MonoInst *imt_arg = NULL;
8227                         MonoInst *keep_this_alive = NULL;
8228                         gboolean pass_vtable = FALSE;
8229                         gboolean pass_mrgctx = FALSE;
8230                         MonoInst *vtable_arg = NULL;
8231                         gboolean check_this = FALSE;
8232                         gboolean supported_tail_call = FALSE;
8233                         gboolean tail_call = FALSE;
8234                         gboolean need_seq_point = FALSE;
8235                         guint32 call_opcode = *ip;
8236                         gboolean emit_widen = TRUE;
8237                         gboolean push_res = TRUE;
8238                         gboolean skip_ret = FALSE;
8239                         gboolean delegate_invoke = FALSE;
8240                         gboolean direct_icall = FALSE;
8241                         gboolean constrained_partial_call = FALSE;
8242                         MonoMethod *cil_method;
8243
8244                         CHECK_OPSIZE (5);
8245                         token = read32 (ip + 1);
8246
8247                         ins = NULL;
8248
8249                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8250                         CHECK_CFG_ERROR;
8251
8252                         cil_method = cmethod;
8253
8254                         if (constrained_class) {
8255                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8256                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8257                                                 g_assert (!cmethod->klass->valuetype);
8258                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8259                                                         constrained_partial_call = TRUE;
8260                                         }
8261                                 }
8262
8263                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8264                                         if (cfg->verbose_level > 2)
8265                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8266                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8267                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8268                                                   cfg->gshared)) {
8269                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8270                                                 CHECK_CFG_ERROR;
8271                                         }
8272                                 } else {
8273                                         if (cfg->verbose_level > 2)
8274                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8275
8276                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8277                                                 /*
8278                                                  * This is needed since get_method_constrained can't find
8279                                                  * the method in klass representing a type var.
8280                                                  * The type var is guaranteed to be a reference type in this
8281                                                  * case.
8282                                                  */
8283                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8284                                                         g_assert (!cmethod->klass->valuetype);
8285                                         } else {
8286                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8287                                                 CHECK_CFG_ERROR;
8288                                         }
8289                                 }
8290
8291                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8292                                         /* Use the corresponding method from the base type to avoid boxing */
8293                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8294                                         g_assert (base_type);
8295                                         constrained_class = mono_class_from_mono_type (base_type);
8296                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8297                                         g_assert (cmethod);
8298                                 }
8299                         }
8300
8301                         if (!dont_verify && !cfg->skip_visibility) {
8302                                 MonoMethod *target_method = cil_method;
8303                                 if (method->is_inflated) {
8304                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8305                                         CHECK_CFG_ERROR;
8306                                 }
8307                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8308                                         !mono_method_can_access_method (method, cil_method))
8309                                         emit_method_access_failure (cfg, method, cil_method);
8310                         }
8311
8312                         if (mono_security_core_clr_enabled ())
8313                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8314
8315                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8316                                 /* MS.NET seems to silently convert this to a callvirt */
8317                                 virtual_ = 1;
8318
8319                         {
8320                                 /*
8321                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8322                                  * converts to a callvirt.
8323                                  *
8324                                  * tests/bug-515884.il is an example of this behavior
8325                                  */
8326                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8327                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8328                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8329                                         virtual_ = 1;
8330                         }
8331
8332                         if (!cmethod->klass->inited)
8333                                 if (!mono_class_init (cmethod->klass))
8334                                         TYPE_LOAD_ERROR (cmethod->klass);
8335
8336                         fsig = mono_method_signature (cmethod);
8337                         if (!fsig)
8338                                 LOAD_ERROR;
8339                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8340                                 mini_class_is_system_array (cmethod->klass)) {
8341                                 array_rank = cmethod->klass->rank;
8342                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8343                                 direct_icall = TRUE;
8344                         } else if (fsig->pinvoke) {
8345                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8346                                 fsig = mono_method_signature (wrapper);
8347                         } else if (constrained_class) {
8348                         } else {
8349                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8350                                 CHECK_CFG_ERROR;
8351                         }
8352
8353                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8354                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8355
8356                         /* See code below */
8357                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8358                                 MonoBasicBlock *tbb;
8359
8360                                 GET_BBLOCK (cfg, tbb, ip + 5);
8361                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8362                                         /*
8363                                          * We want to extend the try block to cover the call, but we can't do it if the
8364                                          * call is made directly since its followed by an exception check.
8365                                          */
8366                                         direct_icall = FALSE;
8367                                 }
8368                         }
8369
8370                         mono_save_token_info (cfg, image, token, cil_method);
8371
8372                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8373                                 need_seq_point = TRUE;
8374
8375                         /* Don't support calls made using type arguments for now */
8376                         /*
8377                           if (cfg->gsharedvt) {
8378                           if (mini_is_gsharedvt_signature (fsig))
8379                           GSHAREDVT_FAILURE (*ip);
8380                           }
8381                         */
8382
8383                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8384                                 g_assert_not_reached ();
8385
8386                         n = fsig->param_count + fsig->hasthis;
8387
8388                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8389                                 UNVERIFIED;
8390
8391                         if (!cfg->gshared)
8392                                 g_assert (!mono_method_check_context_used (cmethod));
8393
8394                         CHECK_STACK (n);
8395
8396                         //g_assert (!virtual_ || fsig->hasthis);
8397
8398                         sp -= n;
8399
8400                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8401                                 cfg->cbb->out_of_line = TRUE;
8402
8403                         /*
8404                          * We have the `constrained.' prefix opcode.
8405                          */
8406                         if (constrained_class) {
8407                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8408                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8409                                                 /* The 'Own method' case below */
8410                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8411                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8412                                         } else {
8413                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8414                                                 CHECK_CFG_EXCEPTION;
8415                                                 g_assert (ins);
8416                                                 goto call_end;
8417                                         }
8418                                 }
8419
8420                                 if (constrained_partial_call) {
8421                                         gboolean need_box = TRUE;
8422
8423                                         /*
8424                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8425                                          * called method is not known at compile time either. The called method could end up being
8426                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8427                                          * to box the receiver.
8428                                          * A simple solution would be to box always and make a normal virtual call, but that would
8429                                          * be bad performance wise.
8430                                          */
8431                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8432                                                 /*
8433                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8434                                                  */
8435                                                 need_box = FALSE;
8436                                         }
8437
8438                                         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)) {
8439                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8440                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8441                                                 ins->klass = constrained_class;
8442                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8443                                                 CHECK_CFG_EXCEPTION;
8444                                         } else if (need_box) {
8445                                                 MonoInst *box_type;
8446                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8447                                                 MonoInst *nonbox_call;
8448
8449                                                 /*
8450                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8451                                                  * if needed.
8452                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8453                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8454                                                  */
8455                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8456
8457                                                 NEW_BBLOCK (cfg, is_ref_bb);
8458                                                 NEW_BBLOCK (cfg, end_bb);
8459
8460                                                 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);
8461                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8462                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8463
8464                                                 /* Non-ref case */
8465                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8466
8467                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8468
8469                                                 /* Ref case */
8470                                                 MONO_START_BB (cfg, is_ref_bb);
8471                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8472                                                 ins->klass = constrained_class;
8473                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8474                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8475
8476                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8477
8478                                                 MONO_START_BB (cfg, end_bb);
8479                                                 cfg->cbb = end_bb;
8480
8481                                                 nonbox_call->dreg = ins->dreg;
8482                                                 goto call_end;
8483                                         } else {
8484                                                 g_assert (mono_class_is_interface (cmethod->klass));
8485                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8486                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8487                                                 goto call_end;
8488                                         }
8489                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8490                                         /*
8491                                          * The type parameter is instantiated as a valuetype,
8492                                          * but that type doesn't override the method we're
8493                                          * calling, so we need to box `this'.
8494                                          */
8495                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8496                                         ins->klass = constrained_class;
8497                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8498                                         CHECK_CFG_EXCEPTION;
8499                                 } else if (!constrained_class->valuetype) {
8500                                         int dreg = alloc_ireg_ref (cfg);
8501
8502                                         /*
8503                                          * The type parameter is instantiated as a reference
8504                                          * type.  We have a managed pointer on the stack, so
8505                                          * we need to dereference it here.
8506                                          */
8507                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8508                                         ins->type = STACK_OBJ;
8509                                         sp [0] = ins;
8510                                 } else {
8511                                         if (cmethod->klass->valuetype) {
8512                                                 /* Own method */
8513                                         } else {
8514                                                 /* Interface method */
8515                                                 int ioffset, slot;
8516
8517                                                 mono_class_setup_vtable (constrained_class);
8518                                                 CHECK_TYPELOAD (constrained_class);
8519                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8520                                                 if (ioffset == -1)
8521                                                         TYPE_LOAD_ERROR (constrained_class);
8522                                                 slot = mono_method_get_vtable_slot (cmethod);
8523                                                 if (slot == -1)
8524                                                         TYPE_LOAD_ERROR (cmethod->klass);
8525                                                 cmethod = constrained_class->vtable [ioffset + slot];
8526
8527                                                 if (cmethod->klass == mono_defaults.enum_class) {
8528                                                         /* Enum implements some interfaces, so treat this as the first case */
8529                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8530                                                         ins->klass = constrained_class;
8531                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8532                                                         CHECK_CFG_EXCEPTION;
8533                                                 }
8534                                         }
8535                                         virtual_ = 0;
8536                                 }
8537                                 constrained_class = NULL;
8538                         }
8539
8540                         if (check_call_signature (cfg, fsig, sp))
8541                                 UNVERIFIED;
8542
8543                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8544                                 delegate_invoke = TRUE;
8545
8546                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8547                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8548                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8549                                         emit_widen = FALSE;
8550                                 }
8551
8552                                 goto call_end;
8553                         }
8554
8555                         /*
8556                          * If the callee is a shared method, then its static cctor
8557                          * might not get called after the call was patched.
8558                          */
8559                         if (cfg->gshared && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
8560                                 emit_class_init (cfg, cmethod->klass);
8561                                 CHECK_TYPELOAD (cmethod->klass);
8562                         }
8563
8564                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8565
8566                         if (cfg->gshared) {
8567                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8568
8569                                 context_used = mini_method_check_context_used (cfg, cmethod);
8570
8571                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8572                                         /* Generic method interface
8573                                            calls are resolved via a
8574                                            helper function and don't
8575                                            need an imt. */
8576                                         if (!cmethod_context || !cmethod_context->method_inst)
8577                                                 pass_imt_from_rgctx = TRUE;
8578                                 }
8579
8580                                 /*
8581                                  * If a shared method calls another
8582                                  * shared method then the caller must
8583                                  * have a generic sharing context
8584                                  * because the magic trampoline
8585                                  * requires it.  FIXME: We shouldn't
8586                                  * have to force the vtable/mrgctx
8587                                  * variable here.  Instead there
8588                                  * should be a flag in the cfg to
8589                                  * request a generic sharing context.
8590                                  */
8591                                 if (context_used &&
8592                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8593                                         mono_get_vtable_var (cfg);
8594                         }
8595
8596                         if (pass_vtable) {
8597                                 if (context_used) {
8598                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8599                                 } else {
8600                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8601
8602                                         CHECK_TYPELOAD (cmethod->klass);
8603                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8604                                 }
8605                         }
8606
8607                         if (pass_mrgctx) {
8608                                 g_assert (!vtable_arg);
8609
8610                                 if (!cfg->compile_aot) {
8611                                         /*
8612                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8613                                          * for type load errors before.
8614                                          */
8615                                         mono_class_setup_vtable (cmethod->klass);
8616                                         CHECK_TYPELOAD (cmethod->klass);
8617                                 }
8618
8619                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8620
8621                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8622                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8623                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8624                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8625                                         if (virtual_)
8626                                                 check_this = TRUE;
8627                                         virtual_ = 0;
8628                                 }
8629                         }
8630
8631                         if (pass_imt_from_rgctx) {
8632                                 g_assert (!pass_vtable);
8633
8634                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8635                                         cmethod, MONO_RGCTX_INFO_METHOD);
8636                         }
8637
8638                         if (check_this)
8639                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8640
8641                         /* Calling virtual generic methods */
8642                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8643                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8644                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8645                             fsig->generic_param_count &&
8646                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8647                                 !cfg->llvm_only) {
8648                                 MonoInst *this_temp, *this_arg_temp, *store;
8649                                 MonoInst *iargs [4];
8650
8651                                 g_assert (fsig->is_inflated);
8652
8653                                 /* Prevent inlining of methods that contain indirect calls */
8654                                 INLINE_FAILURE ("virtual generic call");
8655
8656                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8657                                         GSHAREDVT_FAILURE (*ip);
8658
8659                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8660                                         g_assert (!imt_arg);
8661                                         if (!context_used)
8662                                                 g_assert (cmethod->is_inflated);
8663                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8664                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8665                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8666                                 } else {
8667                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8668                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8669                                         MONO_ADD_INS (cfg->cbb, store);
8670
8671                                         /* FIXME: This should be a managed pointer */
8672                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8673
8674                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8675                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8676                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8677                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8678                                         addr = mono_emit_jit_icall (cfg,
8679                                                                                                 mono_helper_compile_generic_method, iargs);
8680
8681                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8682
8683                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8684                                 }
8685
8686                                 goto call_end;
8687                         }
8688
8689                         /*
8690                          * Implement a workaround for the inherent races involved in locking:
8691                          * Monitor.Enter ()
8692                          * try {
8693                          * } finally {
8694                          *    Monitor.Exit ()
8695                          * }
8696                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8697                          * try block, the Exit () won't be executed, see:
8698                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8699                          * To work around this, we extend such try blocks to include the last x bytes
8700                          * of the Monitor.Enter () call.
8701                          */
8702                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8703                                 MonoBasicBlock *tbb;
8704
8705                                 GET_BBLOCK (cfg, tbb, ip + 5);
8706                                 /*
8707                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8708                                  * from Monitor.Enter like ArgumentNullException.
8709                                  */
8710                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8711                                         /* Mark this bblock as needing to be extended */
8712                                         tbb->extend_try_block = TRUE;
8713                                 }
8714                         }
8715
8716                         /* Conversion to a JIT intrinsic */
8717                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8718                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8719                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8720                                         emit_widen = FALSE;
8721                                 }
8722                                 goto call_end;
8723                         }
8724                         CHECK_CFG_ERROR;
8725
8726                         /* Inlining */
8727                         if ((cfg->opt & MONO_OPT_INLINE) &&
8728                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8729                             mono_method_check_inlining (cfg, cmethod)) {
8730                                 int costs;
8731                                 gboolean always = FALSE;
8732
8733                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8734                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8735                                         /* Prevent inlining of methods that call wrappers */
8736                                         INLINE_FAILURE ("wrapper call");
8737                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8738                                         always = TRUE;
8739                                 }
8740
8741                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8742                                 if (costs) {
8743                                         cfg->real_offset += 5;
8744
8745                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8746                                                 /* *sp is already set by inline_method */
8747                                                 sp++;
8748                                                 push_res = FALSE;
8749                                         }
8750
8751                                         inline_costs += costs;
8752
8753                                         goto call_end;
8754                                 }
8755                         }
8756
8757                         /* Tail recursion elimination */
8758                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8759                                 gboolean has_vtargs = FALSE;
8760                                 int i;
8761
8762                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8763                                 INLINE_FAILURE ("tail call");
8764
8765                                 /* keep it simple */
8766                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8767                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8768                                                 has_vtargs = TRUE;
8769                                 }
8770
8771                                 if (!has_vtargs) {
8772                                         if (need_seq_point) {
8773                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8774                                                 need_seq_point = FALSE;
8775                                         }
8776                                         for (i = 0; i < n; ++i)
8777                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8778                                         MONO_INST_NEW (cfg, ins, OP_BR);
8779                                         MONO_ADD_INS (cfg->cbb, ins);
8780                                         tblock = start_bblock->out_bb [0];
8781                                         link_bblock (cfg, cfg->cbb, tblock);
8782                                         ins->inst_target_bb = tblock;
8783                                         start_new_bblock = 1;
8784
8785                                         /* skip the CEE_RET, too */
8786                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8787                                                 skip_ret = TRUE;
8788                                         push_res = FALSE;
8789                                         goto call_end;
8790                                 }
8791                         }
8792
8793                         inline_costs += 10 * num_calls++;
8794
8795                         /*
8796                          * Synchronized wrappers.
8797                          * Its hard to determine where to replace a method with its synchronized
8798                          * wrapper without causing an infinite recursion. The current solution is
8799                          * to add the synchronized wrapper in the trampolines, and to
8800                          * change the called method to a dummy wrapper, and resolve that wrapper
8801                          * to the real method in mono_jit_compile_method ().
8802                          */
8803                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8804                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8805                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8806                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8807                         }
8808
8809                         /*
8810                          * Making generic calls out of gsharedvt methods.
8811                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8812                          * patching gshared method addresses into a gsharedvt method.
8813                          */
8814                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8815                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8816                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8817                                 MonoRgctxInfoType info_type;
8818
8819                                 if (virtual_) {
8820                                         //if (mono_class_is_interface (cmethod->klass))
8821                                                 //GSHAREDVT_FAILURE (*ip);
8822                                         // disable for possible remoting calls
8823                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8824                                                 GSHAREDVT_FAILURE (*ip);
8825                                         if (fsig->generic_param_count) {
8826                                                 /* virtual generic call */
8827                                                 g_assert (!imt_arg);
8828                                                 /* Same as the virtual generic case above */
8829                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8830                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8831                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8832                                                 vtable_arg = NULL;
8833                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8834                                                 /* This can happen when we call a fully instantiated iface method */
8835                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8836                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8837                                                 vtable_arg = NULL;
8838                                         }
8839                                 }
8840
8841                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8842                                         keep_this_alive = sp [0];
8843
8844                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8845                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8846                                 else
8847                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8848                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8849
8850                                 if (cfg->llvm_only) {
8851                                         // FIXME: Avoid initializing vtable_arg
8852                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8853                                 } else {
8854                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8855                                 }
8856                                 goto call_end;
8857                         }
8858
8859                         /* Generic sharing */
8860
8861                         /*
8862                          * Use this if the callee is gsharedvt sharable too, since
8863                          * at runtime we might find an instantiation so the call cannot
8864                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8865                          */
8866                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8867                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8868                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8869                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8870                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8871                                 INLINE_FAILURE ("gshared");
8872
8873                                 g_assert (cfg->gshared && cmethod);
8874                                 g_assert (!addr);
8875
8876                                 /*
8877                                  * We are compiling a call to a
8878                                  * generic method from shared code,
8879                                  * which means that we have to look up
8880                                  * the method in the rgctx and do an
8881                                  * indirect call.
8882                                  */
8883                                 if (fsig->hasthis)
8884                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8885
8886                                 if (cfg->llvm_only) {
8887                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8888                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8889                                         else
8890                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8891                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8892                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8893                                 } else {
8894                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8895                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8896                                 }
8897                                 goto call_end;
8898                         }
8899
8900                         /* Direct calls to icalls */
8901                         if (direct_icall) {
8902                                 MonoMethod *wrapper;
8903                                 int costs;
8904
8905                                 /* Inline the wrapper */
8906                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8907
8908                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8909                                 g_assert (costs > 0);
8910                                 cfg->real_offset += 5;
8911
8912                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8913                                         /* *sp is already set by inline_method */
8914                                         sp++;
8915                                         push_res = FALSE;
8916                                 }
8917
8918                                 inline_costs += costs;
8919
8920                                 goto call_end;
8921                         }
8922
8923                         /* Array methods */
8924                         if (array_rank) {
8925                                 MonoInst *addr;
8926
8927                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8928                                         MonoInst *val = sp [fsig->param_count];
8929
8930                                         if (val->type == STACK_OBJ) {
8931                                                 MonoInst *iargs [2];
8932
8933                                                 iargs [0] = sp [0];
8934                                                 iargs [1] = val;
8935
8936                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8937                                         }
8938
8939                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8940                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8941                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8942                                                 mini_emit_write_barrier (cfg, addr, val);
8943                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8944                                                 GSHAREDVT_FAILURE (*ip);
8945                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8946                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8947
8948                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8949                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8950                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8951                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8952                                         CHECK_TYPELOAD (cmethod->klass);
8953
8954                                         readonly = FALSE;
8955                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8956                                         ins = addr;
8957                                 } else {
8958                                         g_assert_not_reached ();
8959                                 }
8960
8961                                 emit_widen = FALSE;
8962                                 goto call_end;
8963                         }
8964
8965                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
8966                         if (ins)
8967                                 goto call_end;
8968
8969                         /* Tail prefix / tail call optimization */
8970
8971                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8972                         /* FIXME: runtime generic context pointer for jumps? */
8973                         /* FIXME: handle this for generic sharing eventually */
8974                         if ((ins_flag & MONO_INST_TAILCALL) &&
8975                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
8976                                 supported_tail_call = TRUE;
8977
8978                         if (supported_tail_call) {
8979                                 MonoCallInst *call;
8980
8981                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8982                                 INLINE_FAILURE ("tail call");
8983
8984                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8985
8986                                 if (cfg->backend->have_op_tail_call) {
8987                                         /* Handle tail calls similarly to normal calls */
8988                                         tail_call = TRUE;
8989                                 } else {
8990                                         emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
8991
8992                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8993                                         call->tail_call = TRUE;
8994                                         call->method = cmethod;
8995                                         call->signature = mono_method_signature (cmethod);
8996
8997                                         /*
8998                                          * We implement tail calls by storing the actual arguments into the
8999                                          * argument variables, then emitting a CEE_JMP.
9000                                          */
9001                                         for (i = 0; i < n; ++i) {
9002                                                 /* Prevent argument from being register allocated */
9003                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9004                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9005                                         }
9006                                         ins = (MonoInst*)call;
9007                                         ins->inst_p0 = cmethod;
9008                                         ins->inst_p1 = arg_array [0];
9009                                         MONO_ADD_INS (cfg->cbb, ins);
9010                                         link_bblock (cfg, cfg->cbb, end_bblock);
9011                                         start_new_bblock = 1;
9012
9013                                         // FIXME: Eliminate unreachable epilogs
9014
9015                                         /*
9016                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9017                                          * only reachable from this call.
9018                                          */
9019                                         GET_BBLOCK (cfg, tblock, ip + 5);
9020                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9021                                                 skip_ret = TRUE;
9022                                         push_res = FALSE;
9023
9024                                         goto call_end;
9025                                 }
9026                         }
9027
9028                         /*
9029                          * Virtual calls in llvm-only mode.
9030                          */
9031                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9032                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9033                                 goto call_end;
9034                         }
9035
9036                         /* Common call */
9037                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9038                                 INLINE_FAILURE ("call");
9039                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9040                                                                                           imt_arg, vtable_arg);
9041
9042                         if (tail_call && !cfg->llvm_only) {
9043                                 link_bblock (cfg, cfg->cbb, end_bblock);
9044                                 start_new_bblock = 1;
9045
9046                                 // FIXME: Eliminate unreachable epilogs
9047
9048                                 /*
9049                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9050                                  * only reachable from this call.
9051                                  */
9052                                 GET_BBLOCK (cfg, tblock, ip + 5);
9053                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9054                                         skip_ret = TRUE;
9055                                 push_res = FALSE;
9056                         }
9057
9058                         call_end:
9059
9060                         /* End of call, INS should contain the result of the call, if any */
9061
9062                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9063                                 g_assert (ins);
9064                                 if (emit_widen)
9065                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9066                                 else
9067                                         *sp++ = ins;
9068                         }
9069
9070                         if (keep_this_alive) {
9071                                 MonoInst *dummy_use;
9072
9073                                 /* See mono_emit_method_call_full () */
9074                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9075                         }
9076
9077                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9078                                 /*
9079                                  * Clang can convert these calls to tail calls which screw up the stack
9080                                  * walk. This happens even when the -fno-optimize-sibling-calls
9081                                  * option is passed to clang.
9082                                  * Work around this by emitting a dummy call.
9083                                  */
9084                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9085                         }
9086
9087                         CHECK_CFG_EXCEPTION;
9088
9089                         ip += 5;
9090                         if (skip_ret) {
9091                                 g_assert (*ip == CEE_RET);
9092                                 ip += 1;
9093                         }
9094                         ins_flag = 0;
9095                         constrained_class = NULL;
9096                         if (need_seq_point)
9097                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9098                         break;
9099                 }
9100                 case CEE_RET:
9101                         if (cfg->method != method) {
9102                                 /* return from inlined method */
9103                                 /*
9104                                  * If in_count == 0, that means the ret is unreachable due to
9105                                  * being preceeded by a throw. In that case, inline_method () will
9106                                  * handle setting the return value
9107                                  * (test case: test_0_inline_throw ()).
9108                                  */
9109                                 if (return_var && cfg->cbb->in_count) {
9110                                         MonoType *ret_type = mono_method_signature (method)->ret;
9111
9112                                         MonoInst *store;
9113                                         CHECK_STACK (1);
9114                                         --sp;
9115
9116                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9117                                                 UNVERIFIED;
9118
9119                                         //g_assert (returnvar != -1);
9120                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9121                                         cfg->ret_var_set = TRUE;
9122                                 }
9123                         } else {
9124                                 emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
9125
9126                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9127                                         emit_pop_lmf (cfg);
9128
9129                                 if (cfg->ret) {
9130                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9131
9132                                         if (seq_points && !sym_seq_points) {
9133                                                 /*
9134                                                  * Place a seq point here too even through the IL stack is not
9135                                                  * empty, so a step over on
9136                                                  * call <FOO>
9137                                                  * ret
9138                                                  * will work correctly.
9139                                                  */
9140                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9141                                                 MONO_ADD_INS (cfg->cbb, ins);
9142                                         }
9143
9144                                         g_assert (!return_var);
9145                                         CHECK_STACK (1);
9146                                         --sp;
9147
9148                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9149                                                 UNVERIFIED;
9150
9151                                         emit_setret (cfg, *sp);
9152                                 }
9153                         }
9154                         if (sp != stack_start)
9155                                 UNVERIFIED;
9156                         MONO_INST_NEW (cfg, ins, OP_BR);
9157                         ip++;
9158                         ins->inst_target_bb = end_bblock;
9159                         MONO_ADD_INS (cfg->cbb, ins);
9160                         link_bblock (cfg, cfg->cbb, end_bblock);
9161                         start_new_bblock = 1;
9162                         break;
9163                 case CEE_BR_S:
9164                         CHECK_OPSIZE (2);
9165                         MONO_INST_NEW (cfg, ins, OP_BR);
9166                         ip++;
9167                         target = ip + 1 + (signed char)(*ip);
9168                         ++ip;
9169                         GET_BBLOCK (cfg, tblock, target);
9170                         link_bblock (cfg, cfg->cbb, tblock);
9171                         ins->inst_target_bb = tblock;
9172                         if (sp != stack_start) {
9173                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9174                                 sp = stack_start;
9175                                 CHECK_UNVERIFIABLE (cfg);
9176                         }
9177                         MONO_ADD_INS (cfg->cbb, ins);
9178                         start_new_bblock = 1;
9179                         inline_costs += BRANCH_COST;
9180                         break;
9181                 case CEE_BEQ_S:
9182                 case CEE_BGE_S:
9183                 case CEE_BGT_S:
9184                 case CEE_BLE_S:
9185                 case CEE_BLT_S:
9186                 case CEE_BNE_UN_S:
9187                 case CEE_BGE_UN_S:
9188                 case CEE_BGT_UN_S:
9189                 case CEE_BLE_UN_S:
9190                 case CEE_BLT_UN_S:
9191                         CHECK_OPSIZE (2);
9192                         CHECK_STACK (2);
9193                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9194                         ip++;
9195                         target = ip + 1 + *(signed char*)ip;
9196                         ip++;
9197
9198                         ADD_BINCOND (NULL);
9199
9200                         sp = stack_start;
9201                         inline_costs += BRANCH_COST;
9202                         break;
9203                 case CEE_BR:
9204                         CHECK_OPSIZE (5);
9205                         MONO_INST_NEW (cfg, ins, OP_BR);
9206                         ip++;
9207
9208                         target = ip + 4 + (gint32)read32(ip);
9209                         ip += 4;
9210                         GET_BBLOCK (cfg, tblock, target);
9211                         link_bblock (cfg, cfg->cbb, tblock);
9212                         ins->inst_target_bb = tblock;
9213                         if (sp != stack_start) {
9214                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9215                                 sp = stack_start;
9216                                 CHECK_UNVERIFIABLE (cfg);
9217                         }
9218
9219                         MONO_ADD_INS (cfg->cbb, ins);
9220
9221                         start_new_bblock = 1;
9222                         inline_costs += BRANCH_COST;
9223                         break;
9224                 case CEE_BRFALSE_S:
9225                 case CEE_BRTRUE_S:
9226                 case CEE_BRFALSE:
9227                 case CEE_BRTRUE: {
9228                         MonoInst *cmp;
9229                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9230                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9231                         guint32 opsize = is_short ? 1 : 4;
9232
9233                         CHECK_OPSIZE (opsize);
9234                         CHECK_STACK (1);
9235                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9236                                 UNVERIFIED;
9237                         ip ++;
9238                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9239                         ip += opsize;
9240
9241                         sp--;
9242
9243                         GET_BBLOCK (cfg, tblock, target);
9244                         link_bblock (cfg, cfg->cbb, tblock);
9245                         GET_BBLOCK (cfg, tblock, ip);
9246                         link_bblock (cfg, cfg->cbb, tblock);
9247
9248                         if (sp != stack_start) {
9249                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9250                                 CHECK_UNVERIFIABLE (cfg);
9251                         }
9252
9253                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9254                         cmp->sreg1 = sp [0]->dreg;
9255                         type_from_op (cfg, cmp, sp [0], NULL);
9256                         CHECK_TYPE (cmp);
9257
9258 #if SIZEOF_REGISTER == 4
9259                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9260                                 /* Convert it to OP_LCOMPARE */
9261                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9262                                 ins->type = STACK_I8;
9263                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9264                                 ins->inst_l = 0;
9265                                 MONO_ADD_INS (cfg->cbb, ins);
9266                                 cmp->opcode = OP_LCOMPARE;
9267                                 cmp->sreg2 = ins->dreg;
9268                         }
9269 #endif
9270                         MONO_ADD_INS (cfg->cbb, cmp);
9271
9272                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9273                         type_from_op (cfg, ins, sp [0], NULL);
9274                         MONO_ADD_INS (cfg->cbb, ins);
9275                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9276                         GET_BBLOCK (cfg, tblock, target);
9277                         ins->inst_true_bb = tblock;
9278                         GET_BBLOCK (cfg, tblock, ip);
9279                         ins->inst_false_bb = tblock;
9280                         start_new_bblock = 2;
9281
9282                         sp = stack_start;
9283                         inline_costs += BRANCH_COST;
9284                         break;
9285                 }
9286                 case CEE_BEQ:
9287                 case CEE_BGE:
9288                 case CEE_BGT:
9289                 case CEE_BLE:
9290                 case CEE_BLT:
9291                 case CEE_BNE_UN:
9292                 case CEE_BGE_UN:
9293                 case CEE_BGT_UN:
9294                 case CEE_BLE_UN:
9295                 case CEE_BLT_UN:
9296                         CHECK_OPSIZE (5);
9297                         CHECK_STACK (2);
9298                         MONO_INST_NEW (cfg, ins, *ip);
9299                         ip++;
9300                         target = ip + 4 + (gint32)read32(ip);
9301                         ip += 4;
9302
9303                         ADD_BINCOND (NULL);
9304
9305                         sp = stack_start;
9306                         inline_costs += BRANCH_COST;
9307                         break;
9308                 case CEE_SWITCH: {
9309                         MonoInst *src1;
9310                         MonoBasicBlock **targets;
9311                         MonoBasicBlock *default_bblock;
9312                         MonoJumpInfoBBTable *table;
9313                         int offset_reg = alloc_preg (cfg);
9314                         int target_reg = alloc_preg (cfg);
9315                         int table_reg = alloc_preg (cfg);
9316                         int sum_reg = alloc_preg (cfg);
9317                         gboolean use_op_switch;
9318
9319                         CHECK_OPSIZE (5);
9320                         CHECK_STACK (1);
9321                         n = read32 (ip + 1);
9322                         --sp;
9323                         src1 = sp [0];
9324                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9325                                 UNVERIFIED;
9326
9327                         ip += 5;
9328                         CHECK_OPSIZE (n * sizeof (guint32));
9329                         target = ip + n * sizeof (guint32);
9330
9331                         GET_BBLOCK (cfg, default_bblock, target);
9332                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9333
9334                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9335                         for (i = 0; i < n; ++i) {
9336                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9337                                 targets [i] = tblock;
9338                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9339                                 ip += 4;
9340                         }
9341
9342                         if (sp != stack_start) {
9343                                 /*
9344                                  * Link the current bb with the targets as well, so handle_stack_args
9345                                  * will set their in_stack correctly.
9346                                  */
9347                                 link_bblock (cfg, cfg->cbb, default_bblock);
9348                                 for (i = 0; i < n; ++i)
9349                                         link_bblock (cfg, cfg->cbb, targets [i]);
9350
9351                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9352                                 sp = stack_start;
9353                                 CHECK_UNVERIFIABLE (cfg);
9354
9355                                 /* Undo the links */
9356                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9357                                 for (i = 0; i < n; ++i)
9358                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9359                         }
9360
9361                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9362                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9363
9364                         for (i = 0; i < n; ++i)
9365                                 link_bblock (cfg, cfg->cbb, targets [i]);
9366
9367                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9368                         table->table = targets;
9369                         table->table_size = n;
9370
9371                         use_op_switch = FALSE;
9372 #ifdef TARGET_ARM
9373                         /* ARM implements SWITCH statements differently */
9374                         /* FIXME: Make it use the generic implementation */
9375                         if (!cfg->compile_aot)
9376                                 use_op_switch = TRUE;
9377 #endif
9378
9379                         if (COMPILE_LLVM (cfg))
9380                                 use_op_switch = TRUE;
9381
9382                         cfg->cbb->has_jump_table = 1;
9383
9384                         if (use_op_switch) {
9385                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9386                                 ins->sreg1 = src1->dreg;
9387                                 ins->inst_p0 = table;
9388                                 ins->inst_many_bb = targets;
9389                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9390                                 MONO_ADD_INS (cfg->cbb, ins);
9391                         } else {
9392                                 if (sizeof (gpointer) == 8)
9393                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9394                                 else
9395                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9396
9397 #if SIZEOF_REGISTER == 8
9398                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9399                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9400 #endif
9401
9402                                 if (cfg->compile_aot) {
9403                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9404                                 } else {
9405                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9406                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9407                                         ins->inst_p0 = table;
9408                                         ins->dreg = table_reg;
9409                                         MONO_ADD_INS (cfg->cbb, ins);
9410                                 }
9411
9412                                 /* FIXME: Use load_memindex */
9413                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9414                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9415                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9416                         }
9417                         start_new_bblock = 1;
9418                         inline_costs += (BRANCH_COST * 2);
9419                         break;
9420                 }
9421                 case CEE_LDIND_I1:
9422                 case CEE_LDIND_U1:
9423                 case CEE_LDIND_I2:
9424                 case CEE_LDIND_U2:
9425                 case CEE_LDIND_I4:
9426                 case CEE_LDIND_U4:
9427                 case CEE_LDIND_I8:
9428                 case CEE_LDIND_I:
9429                 case CEE_LDIND_R4:
9430                 case CEE_LDIND_R8:
9431                 case CEE_LDIND_REF:
9432                         CHECK_STACK (1);
9433                         --sp;
9434
9435                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9436                         *sp++ = ins;
9437                         ins_flag = 0;
9438                         ++ip;
9439                         break;
9440                 case CEE_STIND_REF:
9441                 case CEE_STIND_I1:
9442                 case CEE_STIND_I2:
9443                 case CEE_STIND_I4:
9444                 case CEE_STIND_I8:
9445                 case CEE_STIND_R4:
9446                 case CEE_STIND_R8:
9447                 case CEE_STIND_I:
9448                         CHECK_STACK (2);
9449                         sp -= 2;
9450
9451                         if (ins_flag & MONO_INST_VOLATILE) {
9452                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9453                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9454                         }
9455
9456                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9457                         ins->flags |= ins_flag;
9458                         ins_flag = 0;
9459
9460                         MONO_ADD_INS (cfg->cbb, ins);
9461
9462                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9463                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9464
9465                         inline_costs += 1;
9466                         ++ip;
9467                         break;
9468
9469                 case CEE_MUL:
9470                         CHECK_STACK (2);
9471
9472                         MONO_INST_NEW (cfg, ins, (*ip));
9473                         sp -= 2;
9474                         ins->sreg1 = sp [0]->dreg;
9475                         ins->sreg2 = sp [1]->dreg;
9476                         type_from_op (cfg, ins, sp [0], sp [1]);
9477                         CHECK_TYPE (ins);
9478                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9479
9480                         /* Use the immediate opcodes if possible */
9481                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9482                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9483                                 if (imm_opcode != -1) {
9484                                         ins->opcode = imm_opcode;
9485                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9486                                         ins->sreg2 = -1;
9487
9488                                         NULLIFY_INS (sp [1]);
9489                                 }
9490                         }
9491
9492                         MONO_ADD_INS ((cfg)->cbb, (ins));
9493
9494                         *sp++ = mono_decompose_opcode (cfg, ins);
9495                         ip++;
9496                         break;
9497                 case CEE_ADD:
9498                 case CEE_SUB:
9499                 case CEE_DIV:
9500                 case CEE_DIV_UN:
9501                 case CEE_REM:
9502                 case CEE_REM_UN:
9503                 case CEE_AND:
9504                 case CEE_OR:
9505                 case CEE_XOR:
9506                 case CEE_SHL:
9507                 case CEE_SHR:
9508                 case CEE_SHR_UN:
9509                         CHECK_STACK (2);
9510
9511                         MONO_INST_NEW (cfg, ins, (*ip));
9512                         sp -= 2;
9513                         ins->sreg1 = sp [0]->dreg;
9514                         ins->sreg2 = sp [1]->dreg;
9515                         type_from_op (cfg, ins, sp [0], sp [1]);
9516                         CHECK_TYPE (ins);
9517                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9518                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9519
9520                         /* FIXME: Pass opcode to is_inst_imm */
9521
9522                         /* Use the immediate opcodes if possible */
9523                         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)) {
9524                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9525                                 if (imm_opcode != -1) {
9526                                         ins->opcode = imm_opcode;
9527                                         if (sp [1]->opcode == OP_I8CONST) {
9528 #if SIZEOF_REGISTER == 8
9529                                                 ins->inst_imm = sp [1]->inst_l;
9530 #else
9531                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9532                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9533 #endif
9534                                         }
9535                                         else
9536                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9537                                         ins->sreg2 = -1;
9538
9539                                         /* Might be followed by an instruction added by add_widen_op */
9540                                         if (sp [1]->next == NULL)
9541                                                 NULLIFY_INS (sp [1]);
9542                                 }
9543                         }
9544                         MONO_ADD_INS ((cfg)->cbb, (ins));
9545
9546                         *sp++ = mono_decompose_opcode (cfg, ins);
9547                         ip++;
9548                         break;
9549                 case CEE_NEG:
9550                 case CEE_NOT:
9551                 case CEE_CONV_I1:
9552                 case CEE_CONV_I2:
9553                 case CEE_CONV_I4:
9554                 case CEE_CONV_R4:
9555                 case CEE_CONV_R8:
9556                 case CEE_CONV_U4:
9557                 case CEE_CONV_I8:
9558                 case CEE_CONV_U8:
9559                 case CEE_CONV_OVF_I8:
9560                 case CEE_CONV_OVF_U8:
9561                 case CEE_CONV_R_UN:
9562                         CHECK_STACK (1);
9563
9564                         /* Special case this earlier so we have long constants in the IR */
9565                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9566                                 int data = sp [-1]->inst_c0;
9567                                 sp [-1]->opcode = OP_I8CONST;
9568                                 sp [-1]->type = STACK_I8;
9569 #if SIZEOF_REGISTER == 8
9570                                 if ((*ip) == CEE_CONV_U8)
9571                                         sp [-1]->inst_c0 = (guint32)data;
9572                                 else
9573                                         sp [-1]->inst_c0 = data;
9574 #else
9575                                 sp [-1]->inst_ls_word = data;
9576                                 if ((*ip) == CEE_CONV_U8)
9577                                         sp [-1]->inst_ms_word = 0;
9578                                 else
9579                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9580 #endif
9581                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9582                         }
9583                         else {
9584                                 ADD_UNOP (*ip);
9585                         }
9586                         ip++;
9587                         break;
9588                 case CEE_CONV_OVF_I4:
9589                 case CEE_CONV_OVF_I1:
9590                 case CEE_CONV_OVF_I2:
9591                 case CEE_CONV_OVF_I:
9592                 case CEE_CONV_OVF_U:
9593                         CHECK_STACK (1);
9594
9595                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9596                                 ADD_UNOP (CEE_CONV_OVF_I8);
9597                                 ADD_UNOP (*ip);
9598                         } else {
9599                                 ADD_UNOP (*ip);
9600                         }
9601                         ip++;
9602                         break;
9603                 case CEE_CONV_OVF_U1:
9604                 case CEE_CONV_OVF_U2:
9605                 case CEE_CONV_OVF_U4:
9606                         CHECK_STACK (1);
9607
9608                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9609                                 ADD_UNOP (CEE_CONV_OVF_U8);
9610                                 ADD_UNOP (*ip);
9611                         } else {
9612                                 ADD_UNOP (*ip);
9613                         }
9614                         ip++;
9615                         break;
9616                 case CEE_CONV_OVF_I1_UN:
9617                 case CEE_CONV_OVF_I2_UN:
9618                 case CEE_CONV_OVF_I4_UN:
9619                 case CEE_CONV_OVF_I8_UN:
9620                 case CEE_CONV_OVF_U1_UN:
9621                 case CEE_CONV_OVF_U2_UN:
9622                 case CEE_CONV_OVF_U4_UN:
9623                 case CEE_CONV_OVF_U8_UN:
9624                 case CEE_CONV_OVF_I_UN:
9625                 case CEE_CONV_OVF_U_UN:
9626                 case CEE_CONV_U2:
9627                 case CEE_CONV_U1:
9628                 case CEE_CONV_I:
9629                 case CEE_CONV_U:
9630                         CHECK_STACK (1);
9631                         ADD_UNOP (*ip);
9632                         CHECK_CFG_EXCEPTION;
9633                         ip++;
9634                         break;
9635                 case CEE_ADD_OVF:
9636                 case CEE_ADD_OVF_UN:
9637                 case CEE_MUL_OVF:
9638                 case CEE_MUL_OVF_UN:
9639                 case CEE_SUB_OVF:
9640                 case CEE_SUB_OVF_UN:
9641                         CHECK_STACK (2);
9642                         ADD_BINOP (*ip);
9643                         ip++;
9644                         break;
9645                 case CEE_CPOBJ:
9646                         GSHAREDVT_FAILURE (*ip);
9647                         CHECK_OPSIZE (5);
9648                         CHECK_STACK (2);
9649                         token = read32 (ip + 1);
9650                         klass = mini_get_class (method, token, generic_context);
9651                         CHECK_TYPELOAD (klass);
9652                         sp -= 2;
9653                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9654                         ins_flag = 0;
9655                         ip += 5;
9656                         break;
9657                 case CEE_LDOBJ: {
9658                         int loc_index = -1;
9659                         int stloc_len = 0;
9660
9661                         CHECK_OPSIZE (5);
9662                         CHECK_STACK (1);
9663                         --sp;
9664                         token = read32 (ip + 1);
9665                         klass = mini_get_class (method, token, generic_context);
9666                         CHECK_TYPELOAD (klass);
9667
9668                         /* Optimize the common ldobj+stloc combination */
9669                         switch (ip [5]) {
9670                         case CEE_STLOC_S:
9671                                 loc_index = ip [6];
9672                                 stloc_len = 2;
9673                                 break;
9674                         case CEE_STLOC_0:
9675                         case CEE_STLOC_1:
9676                         case CEE_STLOC_2:
9677                         case CEE_STLOC_3:
9678                                 loc_index = ip [5] - CEE_STLOC_0;
9679                                 stloc_len = 1;
9680                                 break;
9681                         default:
9682                                 break;
9683                         }
9684
9685                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9686                                 CHECK_LOCAL (loc_index);
9687
9688                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9689                                 ins->dreg = cfg->locals [loc_index]->dreg;
9690                                 ins->flags |= ins_flag;
9691                                 ip += 5;
9692                                 ip += stloc_len;
9693                                 if (ins_flag & MONO_INST_VOLATILE) {
9694                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9695                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9696                                 }
9697                                 ins_flag = 0;
9698                                 break;
9699                         }
9700
9701                         /* Optimize the ldobj+stobj combination */
9702                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9703                                 CHECK_STACK (1);
9704
9705                                 sp --;
9706
9707                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9708
9709                                 ip += 5 + 5;
9710                                 ins_flag = 0;
9711                                 break;
9712                         }
9713
9714                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9715                         *sp++ = ins;
9716
9717                         ip += 5;
9718                         ins_flag = 0;
9719                         inline_costs += 1;
9720                         break;
9721                 }
9722                 case CEE_LDSTR:
9723                         CHECK_STACK_OVF (1);
9724                         CHECK_OPSIZE (5);
9725                         n = read32 (ip + 1);
9726
9727                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9728                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9729                                 ins->type = STACK_OBJ;
9730                                 *sp = ins;
9731                         }
9732                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9733                                 MonoInst *iargs [1];
9734                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9735
9736                                 if (cfg->compile_aot)
9737                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9738                                 else
9739                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9740                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9741                         } else {
9742                                 if (cfg->opt & MONO_OPT_SHARED) {
9743                                         MonoInst *iargs [3];
9744
9745                                         if (cfg->compile_aot) {
9746                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9747                                         }
9748                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9749                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9750                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9751                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9752                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9753                                         CHECK_CFG_ERROR;
9754                                 } else {
9755                                         if (cfg->cbb->out_of_line) {
9756                                                 MonoInst *iargs [2];
9757
9758                                                 if (image == mono_defaults.corlib) {
9759                                                         /*
9760                                                          * Avoid relocations in AOT and save some space by using a
9761                                                          * version of helper_ldstr specialized to mscorlib.
9762                                                          */
9763                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9764                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9765                                                 } else {
9766                                                         /* Avoid creating the string object */
9767                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9768                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9769                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9770                                                 }
9771                                         }
9772                                         else
9773                                         if (cfg->compile_aot) {
9774                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9775                                                 *sp = ins;
9776                                                 MONO_ADD_INS (cfg->cbb, ins);
9777                                         }
9778                                         else {
9779                                                 NEW_PCONST (cfg, ins, NULL);
9780                                                 ins->type = STACK_OBJ;
9781                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9782                                                 CHECK_CFG_ERROR;
9783
9784                                                 if (!ins->inst_p0)
9785                                                         OUT_OF_MEMORY_FAILURE;
9786
9787                                                 *sp = ins;
9788                                                 MONO_ADD_INS (cfg->cbb, ins);
9789                                         }
9790                                 }
9791                         }
9792
9793                         sp++;
9794                         ip += 5;
9795                         break;
9796                 case CEE_NEWOBJ: {
9797                         MonoInst *iargs [2];
9798                         MonoMethodSignature *fsig;
9799                         MonoInst this_ins;
9800                         MonoInst *alloc;
9801                         MonoInst *vtable_arg = NULL;
9802
9803                         CHECK_OPSIZE (5);
9804                         token = read32 (ip + 1);
9805                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9806                         CHECK_CFG_ERROR;
9807
9808                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9809                         CHECK_CFG_ERROR;
9810
9811                         mono_save_token_info (cfg, image, token, cmethod);
9812
9813                         if (!mono_class_init (cmethod->klass))
9814                                 TYPE_LOAD_ERROR (cmethod->klass);
9815
9816                         context_used = mini_method_check_context_used (cfg, cmethod);
9817
9818                         if (!dont_verify && !cfg->skip_visibility) {
9819                                 MonoMethod *cil_method = cmethod;
9820                                 MonoMethod *target_method = cil_method;
9821
9822                                 if (method->is_inflated) {
9823                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9824                                         CHECK_CFG_ERROR;
9825                                 }
9826
9827                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9828                                         !mono_method_can_access_method (method, cil_method))
9829                                         emit_method_access_failure (cfg, method, cil_method);
9830                         }
9831
9832                         if (mono_security_core_clr_enabled ())
9833                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9834
9835                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && mono_class_is_ginst (cmethod->klass) && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9836                                 emit_class_init (cfg, cmethod->klass);
9837                                 CHECK_TYPELOAD (cmethod->klass);
9838                         }
9839
9840                         /*
9841                         if (cfg->gsharedvt) {
9842                                 if (mini_is_gsharedvt_variable_signature (sig))
9843                                         GSHAREDVT_FAILURE (*ip);
9844                         }
9845                         */
9846
9847                         n = fsig->param_count;
9848                         CHECK_STACK (n);
9849
9850                         /*
9851                          * Generate smaller code for the common newobj <exception> instruction in
9852                          * argument checking code.
9853                          */
9854                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9855                                 is_exception_class (cmethod->klass) && n <= 2 &&
9856                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9857                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9858                                 MonoInst *iargs [3];
9859
9860                                 sp -= n;
9861
9862                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9863                                 switch (n) {
9864                                 case 0:
9865                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9866                                         break;
9867                                 case 1:
9868                                         iargs [1] = sp [0];
9869                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9870                                         break;
9871                                 case 2:
9872                                         iargs [1] = sp [0];
9873                                         iargs [2] = sp [1];
9874                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9875                                         break;
9876                                 default:
9877                                         g_assert_not_reached ();
9878                                 }
9879
9880                                 ip += 5;
9881                                 inline_costs += 5;
9882                                 break;
9883                         }
9884
9885                         /* move the args to allow room for 'this' in the first position */
9886                         while (n--) {
9887                                 --sp;
9888                                 sp [1] = sp [0];
9889                         }
9890
9891                         /* check_call_signature () requires sp[0] to be set */
9892                         this_ins.type = STACK_OBJ;
9893                         sp [0] = &this_ins;
9894                         if (check_call_signature (cfg, fsig, sp))
9895                                 UNVERIFIED;
9896
9897                         iargs [0] = NULL;
9898
9899                         if (mini_class_is_system_array (cmethod->klass)) {
9900                                 *sp = emit_get_rgctx_method (cfg, context_used,
9901                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9902
9903                                 /* Avoid varargs in the common case */
9904                                 if (fsig->param_count == 1)
9905                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9906                                 else if (fsig->param_count == 2)
9907                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9908                                 else if (fsig->param_count == 3)
9909                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9910                                 else if (fsig->param_count == 4)
9911                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9912                                 else
9913                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9914                         } else if (cmethod->string_ctor) {
9915                                 g_assert (!context_used);
9916                                 g_assert (!vtable_arg);
9917                                 /* we simply pass a null pointer */
9918                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9919                                 /* now call the string ctor */
9920                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9921                         } else {
9922                                 if (cmethod->klass->valuetype) {
9923                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9924                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9925                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9926
9927                                         alloc = NULL;
9928
9929                                         /*
9930                                          * The code generated by mini_emit_virtual_call () expects
9931                                          * iargs [0] to be a boxed instance, but luckily the vcall
9932                                          * will be transformed into a normal call there.
9933                                          */
9934                                 } else if (context_used) {
9935                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9936                                         *sp = alloc;
9937                                 } else {
9938                                         MonoVTable *vtable = NULL;
9939
9940                                         if (!cfg->compile_aot)
9941                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9942                                         CHECK_TYPELOAD (cmethod->klass);
9943
9944                                         /*
9945                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9946                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9947                                          * As a workaround, we call class cctors before allocating objects.
9948                                          */
9949                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9950                                                 emit_class_init (cfg, cmethod->klass);
9951                                                 if (cfg->verbose_level > 2)
9952                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9953                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9954                                         }
9955
9956                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9957                                         *sp = alloc;
9958                                 }
9959                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9960
9961                                 if (alloc)
9962                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9963
9964                                 /* Now call the actual ctor */
9965                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
9966                                 CHECK_CFG_EXCEPTION;
9967                         }
9968
9969                         if (alloc == NULL) {
9970                                 /* Valuetype */
9971                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9972                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9973                                 *sp++= ins;
9974                         } else {
9975                                 *sp++ = alloc;
9976                         }
9977
9978                         ip += 5;
9979                         inline_costs += 5;
9980                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
9981                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9982                         break;
9983                 }
9984                 case CEE_CASTCLASS:
9985                 case CEE_ISINST: {
9986                         CHECK_STACK (1);
9987                         --sp;
9988                         CHECK_OPSIZE (5);
9989                         token = read32 (ip + 1);
9990                         klass = mini_get_class (method, token, generic_context);
9991                         CHECK_TYPELOAD (klass);
9992                         if (sp [0]->type != STACK_OBJ)
9993                                 UNVERIFIED;
9994
9995                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
9996                         ins->dreg = alloc_preg (cfg);
9997                         ins->sreg1 = (*sp)->dreg;
9998                         ins->klass = klass;
9999                         ins->type = STACK_OBJ;
10000                         MONO_ADD_INS (cfg->cbb, ins);
10001
10002                         CHECK_CFG_EXCEPTION;
10003                         *sp++ = ins;
10004                         ip += 5;
10005
10006                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10007                         break;
10008                 }
10009                 case CEE_UNBOX_ANY: {
10010                         MonoInst *res, *addr;
10011
10012                         CHECK_STACK (1);
10013                         --sp;
10014                         CHECK_OPSIZE (5);
10015                         token = read32 (ip + 1);
10016                         klass = mini_get_class (method, token, generic_context);
10017                         CHECK_TYPELOAD (klass);
10018
10019                         mono_save_token_info (cfg, image, token, klass);
10020
10021                         context_used = mini_class_check_context_used (cfg, klass);
10022
10023                         if (mini_is_gsharedvt_klass (klass)) {
10024                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10025                                 inline_costs += 2;
10026                         } else if (generic_class_is_reference_type (cfg, klass)) {
10027                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10028                                         EMIT_NEW_PCONST (cfg, res, NULL);
10029                                         res->type = STACK_OBJ;
10030                                 } else {
10031                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10032                                         res->dreg = alloc_preg (cfg);
10033                                         res->sreg1 = (*sp)->dreg;
10034                                         res->klass = klass;
10035                                         res->type = STACK_OBJ;
10036                                         MONO_ADD_INS (cfg->cbb, res);
10037                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10038                                 }
10039                         } else if (mono_class_is_nullable (klass)) {
10040                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10041                         } else {
10042                                 addr = handle_unbox (cfg, klass, sp, context_used);
10043                                 /* LDOBJ */
10044                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10045                                 res = ins;
10046                                 inline_costs += 2;
10047                         }
10048
10049                         *sp ++ = res;
10050                         ip += 5;
10051                         break;
10052                 }
10053                 case CEE_BOX: {
10054                         MonoInst *val;
10055                         MonoClass *enum_class;
10056                         MonoMethod *has_flag;
10057
10058                         CHECK_STACK (1);
10059                         --sp;
10060                         val = *sp;
10061                         CHECK_OPSIZE (5);
10062                         token = read32 (ip + 1);
10063                         klass = mini_get_class (method, token, generic_context);
10064                         CHECK_TYPELOAD (klass);
10065
10066                         mono_save_token_info (cfg, image, token, klass);
10067
10068                         context_used = mini_class_check_context_used (cfg, klass);
10069
10070                         if (generic_class_is_reference_type (cfg, klass)) {
10071                                 *sp++ = val;
10072                                 ip += 5;
10073                                 break;
10074                         }
10075
10076                         if (klass == mono_defaults.void_class)
10077                                 UNVERIFIED;
10078                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10079                                 UNVERIFIED;
10080                         /* frequent check in generic code: box (struct), brtrue */
10081
10082                         /*
10083                          * Look for:
10084                          *
10085                          *   <push int/long ptr>
10086                          *   <push int/long>
10087                          *   box MyFlags
10088                          *   constrained. MyFlags
10089                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10090                          *
10091                          * If we find this sequence and the operand types on box and constrained
10092                          * are equal, we can emit a specialized instruction sequence instead of
10093                          * the very slow HasFlag () call.
10094                          */
10095                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10096                             /* Cheap checks first. */
10097                             ip + 5 + 6 + 5 < end &&
10098                             ip [5] == CEE_PREFIX1 &&
10099                             ip [6] == CEE_CONSTRAINED_ &&
10100                             ip [11] == CEE_CALLVIRT &&
10101                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10102                             mono_class_is_enum (klass) &&
10103                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10104                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10105                             has_flag->klass == mono_defaults.enum_class &&
10106                             !strcmp (has_flag->name, "HasFlag") &&
10107                             has_flag->signature->hasthis &&
10108                             has_flag->signature->param_count == 1) {
10109                                 CHECK_TYPELOAD (enum_class);
10110
10111                                 if (enum_class == klass) {
10112                                         MonoInst *enum_this, *enum_flag;
10113
10114                                         ip += 5 + 6 + 5;
10115                                         --sp;
10116
10117                                         enum_this = sp [0];
10118                                         enum_flag = sp [1];
10119
10120                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10121                                         break;
10122                                 }
10123                         }
10124
10125                         // FIXME: LLVM can't handle the inconsistent bb linking
10126                         if (!mono_class_is_nullable (klass) &&
10127                                 !mini_is_gsharedvt_klass (klass) &&
10128                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10129                                 (ip [5] == CEE_BRTRUE ||
10130                                  ip [5] == CEE_BRTRUE_S ||
10131                                  ip [5] == CEE_BRFALSE ||
10132                                  ip [5] == CEE_BRFALSE_S)) {
10133                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10134                                 int dreg;
10135                                 MonoBasicBlock *true_bb, *false_bb;
10136
10137                                 ip += 5;
10138
10139                                 if (cfg->verbose_level > 3) {
10140                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10141                                         printf ("<box+brtrue opt>\n");
10142                                 }
10143
10144                                 switch (*ip) {
10145                                 case CEE_BRTRUE_S:
10146                                 case CEE_BRFALSE_S:
10147                                         CHECK_OPSIZE (2);
10148                                         ip++;
10149                                         target = ip + 1 + (signed char)(*ip);
10150                                         ip++;
10151                                         break;
10152                                 case CEE_BRTRUE:
10153                                 case CEE_BRFALSE:
10154                                         CHECK_OPSIZE (5);
10155                                         ip++;
10156                                         target = ip + 4 + (gint)(read32 (ip));
10157                                         ip += 4;
10158                                         break;
10159                                 default:
10160                                         g_assert_not_reached ();
10161                                 }
10162
10163                                 /*
10164                                  * We need to link both bblocks, since it is needed for handling stack
10165                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10166                                  * Branching to only one of them would lead to inconsistencies, so
10167                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10168                                  */
10169                                 GET_BBLOCK (cfg, true_bb, target);
10170                                 GET_BBLOCK (cfg, false_bb, ip);
10171
10172                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10173                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10174
10175                                 if (sp != stack_start) {
10176                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10177                                         sp = stack_start;
10178                                         CHECK_UNVERIFIABLE (cfg);
10179                                 }
10180
10181                                 if (COMPILE_LLVM (cfg)) {
10182                                         dreg = alloc_ireg (cfg);
10183                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10184                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10185
10186                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10187                                 } else {
10188                                         /* The JIT can't eliminate the iconst+compare */
10189                                         MONO_INST_NEW (cfg, ins, OP_BR);
10190                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10191                                         MONO_ADD_INS (cfg->cbb, ins);
10192                                 }
10193
10194                                 start_new_bblock = 1;
10195                                 break;
10196                         }
10197
10198                         *sp++ = handle_box (cfg, val, klass, context_used);
10199
10200                         CHECK_CFG_EXCEPTION;
10201                         ip += 5;
10202                         inline_costs += 1;
10203                         break;
10204                 }
10205                 case CEE_UNBOX: {
10206                         CHECK_STACK (1);
10207                         --sp;
10208                         CHECK_OPSIZE (5);
10209                         token = read32 (ip + 1);
10210                         klass = mini_get_class (method, token, generic_context);
10211                         CHECK_TYPELOAD (klass);
10212
10213                         mono_save_token_info (cfg, image, token, klass);
10214
10215                         context_used = mini_class_check_context_used (cfg, klass);
10216
10217                         if (mono_class_is_nullable (klass)) {
10218                                 MonoInst *val;
10219
10220                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10221                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10222
10223                                 *sp++= ins;
10224                         } else {
10225                                 ins = handle_unbox (cfg, klass, sp, context_used);
10226                                 *sp++ = ins;
10227                         }
10228                         ip += 5;
10229                         inline_costs += 2;
10230                         break;
10231                 }
10232                 case CEE_LDFLD:
10233                 case CEE_LDFLDA:
10234                 case CEE_STFLD:
10235                 case CEE_LDSFLD:
10236                 case CEE_LDSFLDA:
10237                 case CEE_STSFLD: {
10238                         MonoClassField *field;
10239 #ifndef DISABLE_REMOTING
10240                         int costs;
10241 #endif
10242                         guint foffset;
10243                         gboolean is_instance;
10244                         int op;
10245                         gpointer addr = NULL;
10246                         gboolean is_special_static;
10247                         MonoType *ftype;
10248                         MonoInst *store_val = NULL;
10249                         MonoInst *thread_ins;
10250
10251                         op = *ip;
10252                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10253                         if (is_instance) {
10254                                 if (op == CEE_STFLD) {
10255                                         CHECK_STACK (2);
10256                                         sp -= 2;
10257                                         store_val = sp [1];
10258                                 } else {
10259                                         CHECK_STACK (1);
10260                                         --sp;
10261                                 }
10262                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10263                                         UNVERIFIED;
10264                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10265                                         UNVERIFIED;
10266                         } else {
10267                                 if (op == CEE_STSFLD) {
10268                                         CHECK_STACK (1);
10269                                         sp--;
10270                                         store_val = sp [0];
10271                                 }
10272                         }
10273
10274                         CHECK_OPSIZE (5);
10275                         token = read32 (ip + 1);
10276                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10277                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10278                                 klass = field->parent;
10279                         }
10280                         else {
10281                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10282                                 CHECK_CFG_ERROR;
10283                         }
10284                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10285                                 FIELD_ACCESS_FAILURE (method, field);
10286                         mono_class_init (klass);
10287
10288                         /* if the class is Critical then transparent code cannot access it's fields */
10289                         if (!is_instance && mono_security_core_clr_enabled ())
10290                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10291
10292                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10293                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10294                         if (mono_security_core_clr_enabled ())
10295                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10296                         */
10297
10298                         ftype = mono_field_get_type (field);
10299
10300                         /*
10301                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10302                          * the static case.
10303                          */
10304                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10305                                 switch (op) {
10306                                 case CEE_LDFLD:
10307                                         op = CEE_LDSFLD;
10308                                         break;
10309                                 case CEE_STFLD:
10310                                         op = CEE_STSFLD;
10311                                         break;
10312                                 case CEE_LDFLDA:
10313                                         op = CEE_LDSFLDA;
10314                                         break;
10315                                 default:
10316                                         g_assert_not_reached ();
10317                                 }
10318                                 is_instance = FALSE;
10319                         }
10320
10321                         context_used = mini_class_check_context_used (cfg, klass);
10322
10323                         /* INSTANCE CASE */
10324
10325                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10326                         if (op == CEE_STFLD) {
10327                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10328                                         UNVERIFIED;
10329 #ifndef DISABLE_REMOTING
10330                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10331                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10332                                         MonoInst *iargs [5];
10333
10334                                         GSHAREDVT_FAILURE (op);
10335
10336                                         iargs [0] = sp [0];
10337                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10338                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10339                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10340                                                     field->offset);
10341                                         iargs [4] = sp [1];
10342
10343                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10344                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10345                                                                                            iargs, ip, cfg->real_offset, TRUE);
10346                                                 CHECK_CFG_EXCEPTION;
10347                                                 g_assert (costs > 0);
10348
10349                                                 cfg->real_offset += 5;
10350
10351                                                 inline_costs += costs;
10352                                         } else {
10353                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10354                                         }
10355                                 } else
10356 #endif
10357                                 {
10358                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10359
10360                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10361
10362                                         if (ins_flag & MONO_INST_VOLATILE) {
10363                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10364                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10365                                         }
10366
10367                                         if (mini_is_gsharedvt_klass (klass)) {
10368                                                 MonoInst *offset_ins;
10369
10370                                                 context_used = mini_class_check_context_used (cfg, klass);
10371
10372                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10373                                                 /* The value is offset by 1 */
10374                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10375                                                 dreg = alloc_ireg_mp (cfg);
10376                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10377                                                 wbarrier_ptr_ins = ins;
10378                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10379                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10380                                         } else {
10381                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10382                                         }
10383                                         if (sp [0]->opcode != OP_LDADDR)
10384                                                 store->flags |= MONO_INST_FAULT;
10385
10386                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10387                                                 if (mini_is_gsharedvt_klass (klass)) {
10388                                                         g_assert (wbarrier_ptr_ins);
10389                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10390                                                 } else {
10391                                                         /* insert call to write barrier */
10392                                                         MonoInst *ptr;
10393                                                         int dreg;
10394
10395                                                         dreg = alloc_ireg_mp (cfg);
10396                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10397                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10398                                                 }
10399                                         }
10400
10401                                         store->flags |= ins_flag;
10402                                 }
10403                                 ins_flag = 0;
10404                                 ip += 5;
10405                                 break;
10406                         }
10407
10408 #ifndef DISABLE_REMOTING
10409                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10410                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10411                                 MonoInst *iargs [4];
10412
10413                                 GSHAREDVT_FAILURE (op);
10414
10415                                 iargs [0] = sp [0];
10416                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10417                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10418                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10419                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10420                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10421                                                                                    iargs, ip, cfg->real_offset, TRUE);
10422                                         CHECK_CFG_EXCEPTION;
10423                                         g_assert (costs > 0);
10424
10425                                         cfg->real_offset += 5;
10426
10427                                         *sp++ = iargs [0];
10428
10429                                         inline_costs += costs;
10430                                 } else {
10431                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10432                                         *sp++ = ins;
10433                                 }
10434                         } else
10435 #endif
10436                         if (is_instance) {
10437                                 if (sp [0]->type == STACK_VTYPE) {
10438                                         MonoInst *var;
10439
10440                                         /* Have to compute the address of the variable */
10441
10442                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10443                                         if (!var)
10444                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10445                                         else
10446                                                 g_assert (var->klass == klass);
10447
10448                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10449                                         sp [0] = ins;
10450                                 }
10451
10452                                 if (op == CEE_LDFLDA) {
10453                                         if (sp [0]->type == STACK_OBJ) {
10454                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10455                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10456                                         }
10457
10458                                         dreg = alloc_ireg_mp (cfg);
10459
10460                                         if (mini_is_gsharedvt_klass (klass)) {
10461                                                 MonoInst *offset_ins;
10462
10463                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10464                                                 /* The value is offset by 1 */
10465                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10466                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10467                                         } else {
10468                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10469                                         }
10470                                         ins->klass = mono_class_from_mono_type (field->type);
10471                                         ins->type = STACK_MP;
10472                                         *sp++ = ins;
10473                                 } else {
10474                                         MonoInst *load;
10475
10476                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10477
10478                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10479                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10480                                                 if (ins) {
10481                                                         *sp++ = ins;
10482                                                         ins_flag = 0;
10483                                                         ip += 5;
10484                                                         break;
10485                                                 }
10486                                         }
10487
10488                                         MonoInst *field_add_inst = sp [0];
10489                                         if (mini_is_gsharedvt_klass (klass)) {
10490                                                 MonoInst *offset_ins;
10491
10492                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10493                                                 /* The value is offset by 1 */
10494                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10495                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10496                                                 foffset = 0;
10497                                         }
10498
10499                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10500
10501                                         if (sp [0]->opcode != OP_LDADDR)
10502                                                 load->flags |= MONO_INST_FAULT;
10503                                         *sp++ = load;
10504                                 }
10505                         }
10506
10507                         if (is_instance) {
10508                                 ins_flag = 0;
10509                                 ip += 5;
10510                                 break;
10511                         }
10512
10513                         /* STATIC CASE */
10514                         context_used = mini_class_check_context_used (cfg, klass);
10515
10516                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10517                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10518                                 CHECK_CFG_ERROR;
10519                         }
10520
10521                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10522                          * to be called here.
10523                          */
10524                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10525                                 mono_class_vtable (cfg->domain, klass);
10526                                 CHECK_TYPELOAD (klass);
10527                         }
10528                         mono_domain_lock (cfg->domain);
10529                         if (cfg->domain->special_static_fields)
10530                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10531                         mono_domain_unlock (cfg->domain);
10532
10533                         is_special_static = mono_class_field_is_special_static (field);
10534
10535                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10536                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10537                         else
10538                                 thread_ins = NULL;
10539
10540                         /* Generate IR to compute the field address */
10541                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10542                                 /*
10543                                  * Fast access to TLS data
10544                                  * Inline version of get_thread_static_data () in
10545                                  * threads.c.
10546                                  */
10547                                 guint32 offset;
10548                                 int idx, static_data_reg, array_reg, dreg;
10549
10550                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10551                                         GSHAREDVT_FAILURE (op);
10552
10553                                 static_data_reg = alloc_ireg (cfg);
10554                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10555
10556                                 if (cfg->compile_aot) {
10557                                         int offset_reg, offset2_reg, idx_reg;
10558
10559                                         /* For TLS variables, this will return the TLS offset */
10560                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10561                                         offset_reg = ins->dreg;
10562                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10563                                         idx_reg = alloc_ireg (cfg);
10564                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10565                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10566                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10567                                         array_reg = alloc_ireg (cfg);
10568                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10569                                         offset2_reg = alloc_ireg (cfg);
10570                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10571                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10572                                         dreg = alloc_ireg (cfg);
10573                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10574                                 } else {
10575                                         offset = (gsize)addr & 0x7fffffff;
10576                                         idx = offset & 0x3f;
10577
10578                                         array_reg = alloc_ireg (cfg);
10579                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10580                                         dreg = alloc_ireg (cfg);
10581                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10582                                 }
10583                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10584                                         (cfg->compile_aot && is_special_static) ||
10585                                         (context_used && is_special_static)) {
10586                                 MonoInst *iargs [2];
10587
10588                                 g_assert (field->parent);
10589                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10590                                 if (context_used) {
10591                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10592                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10593                                 } else {
10594                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10595                                 }
10596                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10597                         } else if (context_used) {
10598                                 MonoInst *static_data;
10599
10600                                 /*
10601                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10602                                         method->klass->name_space, method->klass->name, method->name,
10603                                         depth, field->offset);
10604                                 */
10605
10606                                 if (mono_class_needs_cctor_run (klass, method))
10607                                         emit_class_init (cfg, klass);
10608
10609                                 /*
10610                                  * The pointer we're computing here is
10611                                  *
10612                                  *   super_info.static_data + field->offset
10613                                  */
10614                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10615                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10616
10617                                 if (mini_is_gsharedvt_klass (klass)) {
10618                                         MonoInst *offset_ins;
10619
10620                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10621                                         /* The value is offset by 1 */
10622                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10623                                         dreg = alloc_ireg_mp (cfg);
10624                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10625                                 } else if (field->offset == 0) {
10626                                         ins = static_data;
10627                                 } else {
10628                                         int addr_reg = mono_alloc_preg (cfg);
10629                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10630                                 }
10631                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10632                                 MonoInst *iargs [2];
10633
10634                                 g_assert (field->parent);
10635                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10636                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10637                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10638                         } else {
10639                                 MonoVTable *vtable = NULL;
10640
10641                                 if (!cfg->compile_aot)
10642                                         vtable = mono_class_vtable (cfg->domain, klass);
10643                                 CHECK_TYPELOAD (klass);
10644
10645                                 if (!addr) {
10646                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10647                                                 if (!(g_slist_find (class_inits, klass))) {
10648                                                         emit_class_init (cfg, klass);
10649                                                         if (cfg->verbose_level > 2)
10650                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10651                                                         class_inits = g_slist_prepend (class_inits, klass);
10652                                                 }
10653                                         } else {
10654                                                 if (cfg->run_cctors) {
10655                                                         /* This makes so that inline cannot trigger */
10656                                                         /* .cctors: too many apps depend on them */
10657                                                         /* running with a specific order... */
10658                                                         g_assert (vtable);
10659                                                         if (! vtable->initialized)
10660                                                                 INLINE_FAILURE ("class init");
10661                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10662                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10663                                                                 goto exception_exit;
10664                                                         }
10665                                                 }
10666                                         }
10667                                         if (cfg->compile_aot)
10668                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10669                                         else {
10670                                                 g_assert (vtable);
10671                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10672                                                 g_assert (addr);
10673                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10674                                         }
10675                                 } else {
10676                                         MonoInst *iargs [1];
10677                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10678                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10679                                 }
10680                         }
10681
10682                         /* Generate IR to do the actual load/store operation */
10683
10684                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10685                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10686                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10687                         }
10688
10689                         if (op == CEE_LDSFLDA) {
10690                                 ins->klass = mono_class_from_mono_type (ftype);
10691                                 ins->type = STACK_PTR;
10692                                 *sp++ = ins;
10693                         } else if (op == CEE_STSFLD) {
10694                                 MonoInst *store;
10695
10696                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10697                                 store->flags |= ins_flag;
10698                         } else {
10699                                 gboolean is_const = FALSE;
10700                                 MonoVTable *vtable = NULL;
10701                                 gpointer addr = NULL;
10702
10703                                 if (!context_used) {
10704                                         vtable = mono_class_vtable (cfg->domain, klass);
10705                                         CHECK_TYPELOAD (klass);
10706                                 }
10707                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10708                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10709                                         int ro_type = ftype->type;
10710                                         if (!addr)
10711                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10712                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10713                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10714                                         }
10715
10716                                         GSHAREDVT_FAILURE (op);
10717
10718                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10719                                         is_const = TRUE;
10720                                         switch (ro_type) {
10721                                         case MONO_TYPE_BOOLEAN:
10722                                         case MONO_TYPE_U1:
10723                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10724                                                 sp++;
10725                                                 break;
10726                                         case MONO_TYPE_I1:
10727                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10728                                                 sp++;
10729                                                 break;
10730                                         case MONO_TYPE_CHAR:
10731                                         case MONO_TYPE_U2:
10732                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10733                                                 sp++;
10734                                                 break;
10735                                         case MONO_TYPE_I2:
10736                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10737                                                 sp++;
10738                                                 break;
10739                                                 break;
10740                                         case MONO_TYPE_I4:
10741                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10742                                                 sp++;
10743                                                 break;
10744                                         case MONO_TYPE_U4:
10745                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10746                                                 sp++;
10747                                                 break;
10748                                         case MONO_TYPE_I:
10749                                         case MONO_TYPE_U:
10750                                         case MONO_TYPE_PTR:
10751                                         case MONO_TYPE_FNPTR:
10752                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10753                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10754                                                 sp++;
10755                                                 break;
10756                                         case MONO_TYPE_STRING:
10757                                         case MONO_TYPE_OBJECT:
10758                                         case MONO_TYPE_CLASS:
10759                                         case MONO_TYPE_SZARRAY:
10760                                         case MONO_TYPE_ARRAY:
10761                                                 if (!mono_gc_is_moving ()) {
10762                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10763                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10764                                                         sp++;
10765                                                 } else {
10766                                                         is_const = FALSE;
10767                                                 }
10768                                                 break;
10769                                         case MONO_TYPE_I8:
10770                                         case MONO_TYPE_U8:
10771                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10772                                                 sp++;
10773                                                 break;
10774                                         case MONO_TYPE_R4:
10775                                         case MONO_TYPE_R8:
10776                                         case MONO_TYPE_VALUETYPE:
10777                                         default:
10778                                                 is_const = FALSE;
10779                                                 break;
10780                                         }
10781                                 }
10782
10783                                 if (!is_const) {
10784                                         MonoInst *load;
10785
10786                                         CHECK_STACK_OVF (1);
10787
10788                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10789                                         load->flags |= ins_flag;
10790                                         ins_flag = 0;
10791                                         *sp++ = load;
10792                                 }
10793                         }
10794
10795                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10796                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10797                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10798                         }
10799
10800                         ins_flag = 0;
10801                         ip += 5;
10802                         break;
10803                 }
10804                 case CEE_STOBJ:
10805                         CHECK_STACK (2);
10806                         sp -= 2;
10807                         CHECK_OPSIZE (5);
10808                         token = read32 (ip + 1);
10809                         klass = mini_get_class (method, token, generic_context);
10810                         CHECK_TYPELOAD (klass);
10811
10812                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10813                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10814                         ins_flag = 0;
10815                         ip += 5;
10816                         inline_costs += 1;
10817                         break;
10818
10819                         /*
10820                          * Array opcodes
10821                          */
10822                 case CEE_NEWARR: {
10823                         MonoInst *len_ins;
10824                         const char *data_ptr;
10825                         int data_size = 0;
10826                         guint32 field_token;
10827
10828                         CHECK_STACK (1);
10829                         --sp;
10830
10831                         CHECK_OPSIZE (5);
10832                         token = read32 (ip + 1);
10833
10834                         klass = mini_get_class (method, token, generic_context);
10835                         CHECK_TYPELOAD (klass);
10836                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10837                                 UNVERIFIED;
10838
10839                         context_used = mini_class_check_context_used (cfg, klass);
10840
10841                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10842                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10843                                 ins->sreg1 = sp [0]->dreg;
10844                                 ins->type = STACK_I4;
10845                                 ins->dreg = alloc_ireg (cfg);
10846                                 MONO_ADD_INS (cfg->cbb, ins);
10847                                 *sp = mono_decompose_opcode (cfg, ins);
10848                         }
10849
10850                         if (context_used) {
10851                                 MonoInst *args [3];
10852                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10853                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10854
10855                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10856
10857                                 /* vtable */
10858                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10859                                         array_class, MONO_RGCTX_INFO_VTABLE);
10860                                 /* array len */
10861                                 args [1] = sp [0];
10862
10863                                 if (managed_alloc)
10864                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10865                                 else
10866                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10867                         } else {
10868                                 if (cfg->opt & MONO_OPT_SHARED) {
10869                                         /* Decompose now to avoid problems with references to the domainvar */
10870                                         MonoInst *iargs [3];
10871
10872                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10873                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10874                                         iargs [2] = sp [0];
10875
10876                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10877                                 } else {
10878                                         /* Decompose later since it is needed by abcrem */
10879                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10880                                         mono_class_vtable (cfg->domain, array_type);
10881                                         CHECK_TYPELOAD (array_type);
10882
10883                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10884                                         ins->dreg = alloc_ireg_ref (cfg);
10885                                         ins->sreg1 = sp [0]->dreg;
10886                                         ins->inst_newa_class = klass;
10887                                         ins->type = STACK_OBJ;
10888                                         ins->klass = array_type;
10889                                         MONO_ADD_INS (cfg->cbb, ins);
10890                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10891                                         cfg->cbb->has_array_access = TRUE;
10892
10893                                         /* Needed so mono_emit_load_get_addr () gets called */
10894                                         mono_get_got_var (cfg);
10895                                 }
10896                         }
10897
10898                         len_ins = sp [0];
10899                         ip += 5;
10900                         *sp++ = ins;
10901                         inline_costs += 1;
10902
10903                         /*
10904                          * we inline/optimize the initialization sequence if possible.
10905                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10906                          * for small sizes open code the memcpy
10907                          * ensure the rva field is big enough
10908                          */
10909                         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))) {
10910                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10911                                 MonoInst *iargs [3];
10912                                 int add_reg = alloc_ireg_mp (cfg);
10913
10914                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10915                                 if (cfg->compile_aot) {
10916                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10917                                 } else {
10918                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10919                                 }
10920                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10921                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10922                                 ip += 11;
10923                         }
10924
10925                         break;
10926                 }
10927                 case CEE_LDLEN:
10928                         CHECK_STACK (1);
10929                         --sp;
10930                         if (sp [0]->type != STACK_OBJ)
10931                                 UNVERIFIED;
10932
10933                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10934                         ins->dreg = alloc_preg (cfg);
10935                         ins->sreg1 = sp [0]->dreg;
10936                         ins->type = STACK_I4;
10937                         /* This flag will be inherited by the decomposition */
10938                         ins->flags |= MONO_INST_FAULT;
10939                         MONO_ADD_INS (cfg->cbb, ins);
10940                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10941                         cfg->cbb->has_array_access = TRUE;
10942                         ip ++;
10943                         *sp++ = ins;
10944                         break;
10945                 case CEE_LDELEMA:
10946                         CHECK_STACK (2);
10947                         sp -= 2;
10948                         CHECK_OPSIZE (5);
10949                         if (sp [0]->type != STACK_OBJ)
10950                                 UNVERIFIED;
10951
10952                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10953
10954                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10955                         CHECK_TYPELOAD (klass);
10956                         /* we need to make sure that this array is exactly the type it needs
10957                          * to be for correctness. the wrappers are lax with their usage
10958                          * so we need to ignore them here
10959                          */
10960                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10961                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10962                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10963                                 CHECK_TYPELOAD (array_class);
10964                         }
10965
10966                         readonly = FALSE;
10967                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10968                         *sp++ = ins;
10969                         ip += 5;
10970                         break;
10971                 case CEE_LDELEM:
10972                 case CEE_LDELEM_I1:
10973                 case CEE_LDELEM_U1:
10974                 case CEE_LDELEM_I2:
10975                 case CEE_LDELEM_U2:
10976                 case CEE_LDELEM_I4:
10977                 case CEE_LDELEM_U4:
10978                 case CEE_LDELEM_I8:
10979                 case CEE_LDELEM_I:
10980                 case CEE_LDELEM_R4:
10981                 case CEE_LDELEM_R8:
10982                 case CEE_LDELEM_REF: {
10983                         MonoInst *addr;
10984
10985                         CHECK_STACK (2);
10986                         sp -= 2;
10987
10988                         if (*ip == CEE_LDELEM) {
10989                                 CHECK_OPSIZE (5);
10990                                 token = read32 (ip + 1);
10991                                 klass = mini_get_class (method, token, generic_context);
10992                                 CHECK_TYPELOAD (klass);
10993                                 mono_class_init (klass);
10994                         }
10995                         else
10996                                 klass = array_access_to_klass (*ip);
10997
10998                         if (sp [0]->type != STACK_OBJ)
10999                                 UNVERIFIED;
11000
11001                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11002
11003                         if (mini_is_gsharedvt_variable_klass (klass)) {
11004                                 // FIXME-VT: OP_ICONST optimization
11005                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11006                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11007                                 ins->opcode = OP_LOADV_MEMBASE;
11008                         } else if (sp [1]->opcode == OP_ICONST) {
11009                                 int array_reg = sp [0]->dreg;
11010                                 int index_reg = sp [1]->dreg;
11011                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11012
11013                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11014                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11015
11016                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11017                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11018                         } else {
11019                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11020                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11021                         }
11022                         *sp++ = ins;
11023                         if (*ip == CEE_LDELEM)
11024                                 ip += 5;
11025                         else
11026                                 ++ip;
11027                         break;
11028                 }
11029                 case CEE_STELEM_I:
11030                 case CEE_STELEM_I1:
11031                 case CEE_STELEM_I2:
11032                 case CEE_STELEM_I4:
11033                 case CEE_STELEM_I8:
11034                 case CEE_STELEM_R4:
11035                 case CEE_STELEM_R8:
11036                 case CEE_STELEM_REF:
11037                 case CEE_STELEM: {
11038                         CHECK_STACK (3);
11039                         sp -= 3;
11040
11041                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11042
11043                         if (*ip == CEE_STELEM) {
11044                                 CHECK_OPSIZE (5);
11045                                 token = read32 (ip + 1);
11046                                 klass = mini_get_class (method, token, generic_context);
11047                                 CHECK_TYPELOAD (klass);
11048                                 mono_class_init (klass);
11049                         }
11050                         else
11051                                 klass = array_access_to_klass (*ip);
11052
11053                         if (sp [0]->type != STACK_OBJ)
11054                                 UNVERIFIED;
11055
11056                         emit_array_store (cfg, klass, sp, TRUE);
11057
11058                         if (*ip == CEE_STELEM)
11059                                 ip += 5;
11060                         else
11061                                 ++ip;
11062                         inline_costs += 1;
11063                         break;
11064                 }
11065                 case CEE_CKFINITE: {
11066                         CHECK_STACK (1);
11067                         --sp;
11068
11069                         if (cfg->llvm_only) {
11070                                 MonoInst *iargs [1];
11071
11072                                 iargs [0] = sp [0];
11073                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11074                         } else  {
11075                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11076                                 ins->sreg1 = sp [0]->dreg;
11077                                 ins->dreg = alloc_freg (cfg);
11078                                 ins->type = STACK_R8;
11079                                 MONO_ADD_INS (cfg->cbb, ins);
11080
11081                                 *sp++ = mono_decompose_opcode (cfg, ins);
11082                         }
11083
11084                         ++ip;
11085                         break;
11086                 }
11087                 case CEE_REFANYVAL: {
11088                         MonoInst *src_var, *src;
11089
11090                         int klass_reg = alloc_preg (cfg);
11091                         int dreg = alloc_preg (cfg);
11092
11093                         GSHAREDVT_FAILURE (*ip);
11094
11095                         CHECK_STACK (1);
11096                         MONO_INST_NEW (cfg, ins, *ip);
11097                         --sp;
11098                         CHECK_OPSIZE (5);
11099                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11100                         CHECK_TYPELOAD (klass);
11101
11102                         context_used = mini_class_check_context_used (cfg, klass);
11103
11104                         // FIXME:
11105                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11106                         if (!src_var)
11107                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11108                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11109                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11110
11111                         if (context_used) {
11112                                 MonoInst *klass_ins;
11113
11114                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11115                                                 klass, MONO_RGCTX_INFO_KLASS);
11116
11117                                 // FIXME:
11118                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11119                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11120                         } else {
11121                                 mini_emit_class_check (cfg, klass_reg, klass);
11122                         }
11123                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11124                         ins->type = STACK_MP;
11125                         ins->klass = klass;
11126                         *sp++ = ins;
11127                         ip += 5;
11128                         break;
11129                 }
11130                 case CEE_MKREFANY: {
11131                         MonoInst *loc, *addr;
11132
11133                         GSHAREDVT_FAILURE (*ip);
11134
11135                         CHECK_STACK (1);
11136                         MONO_INST_NEW (cfg, ins, *ip);
11137                         --sp;
11138                         CHECK_OPSIZE (5);
11139                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11140                         CHECK_TYPELOAD (klass);
11141
11142                         context_used = mini_class_check_context_used (cfg, klass);
11143
11144                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11145                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11146
11147                         if (context_used) {
11148                                 MonoInst *const_ins;
11149                                 int type_reg = alloc_preg (cfg);
11150
11151                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11152                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11153                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11154                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11155                         } else {
11156                                 int const_reg = alloc_preg (cfg);
11157                                 int type_reg = alloc_preg (cfg);
11158
11159                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11160                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11161                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11162                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11163                         }
11164                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11165
11166                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11167                         ins->type = STACK_VTYPE;
11168                         ins->klass = mono_defaults.typed_reference_class;
11169                         *sp++ = ins;
11170                         ip += 5;
11171                         break;
11172                 }
11173                 case CEE_LDTOKEN: {
11174                         gpointer handle;
11175                         MonoClass *handle_class;
11176
11177                         CHECK_STACK_OVF (1);
11178
11179                         CHECK_OPSIZE (5);
11180                         n = read32 (ip + 1);
11181
11182                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11183                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11184                                 handle = mono_method_get_wrapper_data (method, n);
11185                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11186                                 if (handle_class == mono_defaults.typehandle_class)
11187                                         handle = &((MonoClass*)handle)->byval_arg;
11188                         }
11189                         else {
11190                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11191                                 CHECK_CFG_ERROR;
11192                         }
11193                         if (!handle)
11194                                 LOAD_ERROR;
11195                         mono_class_init (handle_class);
11196                         if (cfg->gshared) {
11197                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11198                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11199                                         /* This case handles ldtoken
11200                                            of an open type, like for
11201                                            typeof(Gen<>). */
11202                                         context_used = 0;
11203                                 } else if (handle_class == mono_defaults.typehandle_class) {
11204                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11205                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11206                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11207                                 else if (handle_class == mono_defaults.methodhandle_class)
11208                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11209                                 else
11210                                         g_assert_not_reached ();
11211                         }
11212
11213                         if ((cfg->opt & MONO_OPT_SHARED) &&
11214                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11215                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11216                                 MonoInst *addr, *vtvar, *iargs [3];
11217                                 int method_context_used;
11218
11219                                 method_context_used = mini_method_check_context_used (cfg, method);
11220
11221                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11222
11223                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11224                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11225                                 if (method_context_used) {
11226                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11227                                                 method, MONO_RGCTX_INFO_METHOD);
11228                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11229                                 } else {
11230                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11231                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11232                                 }
11233                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11234
11235                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11236
11237                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11238                         } else {
11239                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11240                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11241                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11242                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11243                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11244                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11245
11246                                         mono_class_init (tclass);
11247                                         if (context_used) {
11248                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11249                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11250                                         } else if (cfg->compile_aot) {
11251                                                 if (method->wrapper_type) {
11252                                                         error_init (&error); //got to do it since there are multiple conditionals below
11253                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11254                                                                 /* Special case for static synchronized wrappers */
11255                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11256                                                         } else {
11257                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11258                                                                 /* FIXME: n is not a normal token */
11259                                                                 DISABLE_AOT (cfg);
11260                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11261                                                         }
11262                                                 } else {
11263                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11264                                                 }
11265                                         } else {
11266                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11267                                                 CHECK_CFG_ERROR;
11268                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11269                                         }
11270                                         ins->type = STACK_OBJ;
11271                                         ins->klass = cmethod->klass;
11272                                         ip += 5;
11273                                 } else {
11274                                         MonoInst *addr, *vtvar;
11275
11276                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11277
11278                                         if (context_used) {
11279                                                 if (handle_class == mono_defaults.typehandle_class) {
11280                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11281                                                                         mono_class_from_mono_type ((MonoType *)handle),
11282                                                                         MONO_RGCTX_INFO_TYPE);
11283                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11284                                                         ins = emit_get_rgctx_method (cfg, context_used,
11285                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11286                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11287                                                         ins = emit_get_rgctx_field (cfg, context_used,
11288                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11289                                                 } else {
11290                                                         g_assert_not_reached ();
11291                                                 }
11292                                         } else if (cfg->compile_aot) {
11293                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11294                                         } else {
11295                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11296                                         }
11297                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11298                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11299                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11300                                 }
11301                         }
11302
11303                         *sp++ = ins;
11304                         ip += 5;
11305                         break;
11306                 }
11307                 case CEE_THROW:
11308                         CHECK_STACK (1);
11309                         if (sp [-1]->type != STACK_OBJ)
11310                                 UNVERIFIED;
11311
11312                         MONO_INST_NEW (cfg, ins, OP_THROW);
11313                         --sp;
11314                         ins->sreg1 = sp [0]->dreg;
11315                         ip++;
11316                         cfg->cbb->out_of_line = TRUE;
11317                         MONO_ADD_INS (cfg->cbb, ins);
11318                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11319                         MONO_ADD_INS (cfg->cbb, ins);
11320                         sp = stack_start;
11321
11322                         link_bblock (cfg, cfg->cbb, end_bblock);
11323                         start_new_bblock = 1;
11324                         /* This can complicate code generation for llvm since the return value might not be defined */
11325                         if (COMPILE_LLVM (cfg))
11326                                 INLINE_FAILURE ("throw");
11327                         break;
11328                 case CEE_ENDFINALLY:
11329                         if (!ip_in_finally_clause (cfg, ip - header->code))
11330                                 UNVERIFIED;
11331                         /* mono_save_seq_point_info () depends on this */
11332                         if (sp != stack_start)
11333                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11334                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11335                         MONO_ADD_INS (cfg->cbb, ins);
11336                         ip++;
11337                         start_new_bblock = 1;
11338
11339                         /*
11340                          * Control will leave the method so empty the stack, otherwise
11341                          * the next basic block will start with a nonempty stack.
11342                          */
11343                         while (sp != stack_start) {
11344                                 sp--;
11345                         }
11346                         break;
11347                 case CEE_LEAVE:
11348                 case CEE_LEAVE_S: {
11349                         GList *handlers;
11350
11351                         if (*ip == CEE_LEAVE) {
11352                                 CHECK_OPSIZE (5);
11353                                 target = ip + 5 + (gint32)read32(ip + 1);
11354                         } else {
11355                                 CHECK_OPSIZE (2);
11356                                 target = ip + 2 + (signed char)(ip [1]);
11357                         }
11358
11359                         /* empty the stack */
11360                         while (sp != stack_start) {
11361                                 sp--;
11362                         }
11363
11364                         /*
11365                          * If this leave statement is in a catch block, check for a
11366                          * pending exception, and rethrow it if necessary.
11367                          * We avoid doing this in runtime invoke wrappers, since those are called
11368                          * by native code which excepts the wrapper to catch all exceptions.
11369                          */
11370                         for (i = 0; i < header->num_clauses; ++i) {
11371                                 MonoExceptionClause *clause = &header->clauses [i];
11372
11373                                 /*
11374                                  * Use <= in the final comparison to handle clauses with multiple
11375                                  * leave statements, like in bug #78024.
11376                                  * The ordering of the exception clauses guarantees that we find the
11377                                  * innermost clause.
11378                                  */
11379                                 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) {
11380                                         MonoInst *exc_ins;
11381                                         MonoBasicBlock *dont_throw;
11382
11383                                         /*
11384                                           MonoInst *load;
11385
11386                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11387                                         */
11388
11389                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11390
11391                                         NEW_BBLOCK (cfg, dont_throw);
11392
11393                                         /*
11394                                          * Currently, we always rethrow the abort exception, despite the
11395                                          * fact that this is not correct. See thread6.cs for an example.
11396                                          * But propagating the abort exception is more important than
11397                                          * getting the sematics right.
11398                                          */
11399                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11400                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11401                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11402
11403                                         MONO_START_BB (cfg, dont_throw);
11404                                 }
11405                         }
11406
11407 #ifdef ENABLE_LLVM
11408                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11409 #endif
11410
11411                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11412                                 GList *tmp;
11413
11414                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11415                                         MonoExceptionClause *clause = (MonoExceptionClause *)tmp->data;
11416                                         MonoInst *abort_exc = (MonoInst *)mono_find_exvar_for_offset (cfg, clause->handler_offset);
11417                                         MonoBasicBlock *dont_throw;
11418
11419                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11420                                         g_assert (tblock);
11421                                         link_bblock (cfg, cfg->cbb, tblock);
11422
11423                                         MONO_EMIT_NEW_PCONST (cfg, abort_exc->dreg, 0);
11424
11425                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11426                                         ins->inst_target_bb = tblock;
11427                                         ins->inst_eh_block = clause;
11428                                         MONO_ADD_INS (cfg->cbb, ins);
11429                                         cfg->cbb->has_call_handler = 1;
11430
11431                                         /* Throw exception if exvar is set */
11432                                         /* FIXME Do we need this for calls from catch/filter ? */
11433                                         NEW_BBLOCK (cfg, dont_throw);
11434                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, abort_exc->dreg, 0);
11435                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11436                                         mono_emit_jit_icall (cfg, mono_thread_self_abort, NULL);
11437                                         cfg->cbb->clause_hole = clause;
11438
11439                                         MONO_START_BB (cfg, dont_throw);
11440                                         cfg->cbb->clause_hole = clause;
11441
11442                                         if (COMPILE_LLVM (cfg)) {
11443                                                 MonoBasicBlock *target_bb;
11444
11445                                                 /*
11446                                                  * Link the finally bblock with the target, since it will
11447                                                  * conceptually branch there.
11448                                                  */
11449                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11450                                                 GET_BBLOCK (cfg, target_bb, target);
11451                                                 link_bblock (cfg, tblock, target_bb);
11452                                         }
11453                                 }
11454                                 g_list_free (handlers);
11455                         }
11456
11457                         MONO_INST_NEW (cfg, ins, OP_BR);
11458                         MONO_ADD_INS (cfg->cbb, ins);
11459                         GET_BBLOCK (cfg, tblock, target);
11460                         link_bblock (cfg, cfg->cbb, tblock);
11461                         ins->inst_target_bb = tblock;
11462
11463                         start_new_bblock = 1;
11464
11465                         if (*ip == CEE_LEAVE)
11466                                 ip += 5;
11467                         else
11468                                 ip += 2;
11469
11470                         break;
11471                 }
11472
11473                         /*
11474                          * Mono specific opcodes
11475                          */
11476                 case MONO_CUSTOM_PREFIX: {
11477
11478                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11479
11480                         CHECK_OPSIZE (2);
11481                         switch (ip [1]) {
11482                         case CEE_MONO_ICALL: {
11483                                 gpointer func;
11484                                 MonoJitICallInfo *info;
11485
11486                                 token = read32 (ip + 2);
11487                                 func = mono_method_get_wrapper_data (method, token);
11488                                 info = mono_find_jit_icall_by_addr (func);
11489                                 if (!info)
11490                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11491                                 g_assert (info);
11492
11493                                 CHECK_STACK (info->sig->param_count);
11494                                 sp -= info->sig->param_count;
11495
11496                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11497                                         MonoInst *addr;
11498
11499                                         /*
11500                                          * This is called on unattached threads, so it cannot go through the trampoline
11501                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11502                                          * instead.
11503                                          */
11504                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11505                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11506                                 } else {
11507                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11508                                 }
11509
11510                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11511                                         *sp++ = ins;
11512
11513                                 ip += 6;
11514                                 inline_costs += 10 * num_calls++;
11515
11516                                 break;
11517                         }
11518                         case CEE_MONO_LDPTR_CARD_TABLE:
11519                         case CEE_MONO_LDPTR_NURSERY_START:
11520                         case CEE_MONO_LDPTR_NURSERY_BITS:
11521                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11522                         case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT: {
11523                                 CHECK_STACK_OVF (1);
11524
11525                                 switch (ip [1]) {
11526                                 case CEE_MONO_LDPTR_CARD_TABLE:
11527                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11528                                         break;
11529                                 case CEE_MONO_LDPTR_NURSERY_START:
11530                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11531                                         break;
11532                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11533                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11534                                         break;
11535                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11536                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11537                                         break;
11538                                 case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT:
11539                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT, NULL);
11540                                         break;
11541                                 default:
11542                                         g_assert_not_reached ();
11543                                         break;
11544                                 }
11545
11546                                 *sp++ = ins;
11547                                 ip += 2;
11548                                 inline_costs += 10 * num_calls++;
11549                                 break;
11550                         }
11551                         case CEE_MONO_LDPTR: {
11552                                 gpointer ptr;
11553
11554                                 CHECK_STACK_OVF (1);
11555                                 CHECK_OPSIZE (6);
11556                                 token = read32 (ip + 2);
11557
11558                                 ptr = mono_method_get_wrapper_data (method, token);
11559                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11560                                 *sp++ = ins;
11561                                 ip += 6;
11562                                 inline_costs += 10 * num_calls++;
11563                                 /* Can't embed random pointers into AOT code */
11564                                 DISABLE_AOT (cfg);
11565                                 break;
11566                         }
11567                         case CEE_MONO_JIT_ICALL_ADDR: {
11568                                 MonoJitICallInfo *callinfo;
11569                                 gpointer ptr;
11570
11571                                 CHECK_STACK_OVF (1);
11572                                 CHECK_OPSIZE (6);
11573                                 token = read32 (ip + 2);
11574
11575                                 ptr = mono_method_get_wrapper_data (method, token);
11576                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11577                                 g_assert (callinfo);
11578                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11579                                 *sp++ = ins;
11580                                 ip += 6;
11581                                 inline_costs += 10 * num_calls++;
11582                                 break;
11583                         }
11584                         case CEE_MONO_ICALL_ADDR: {
11585                                 MonoMethod *cmethod;
11586                                 gpointer ptr;
11587
11588                                 CHECK_STACK_OVF (1);
11589                                 CHECK_OPSIZE (6);
11590                                 token = read32 (ip + 2);
11591
11592                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11593
11594                                 if (cfg->compile_aot) {
11595                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11596                                                 /*
11597                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11598                                                  * before the call, its not needed when using direct pinvoke.
11599                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11600                                                  * on platforms which don't support dlopen ().
11601                                                  */
11602                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11603                                         } else {
11604                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11605                                         }
11606                                 } else {
11607                                         ptr = mono_lookup_internal_call (cmethod);
11608                                         g_assert (ptr);
11609                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11610                                 }
11611                                 *sp++ = ins;
11612                                 ip += 6;
11613                                 break;
11614                         }
11615                         case CEE_MONO_VTADDR: {
11616                                 MonoInst *src_var, *src;
11617
11618                                 CHECK_STACK (1);
11619                                 --sp;
11620
11621                                 // FIXME:
11622                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11623                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11624                                 *sp++ = src;
11625                                 ip += 2;
11626                                 break;
11627                         }
11628                         case CEE_MONO_NEWOBJ: {
11629                                 MonoInst *iargs [2];
11630
11631                                 CHECK_STACK_OVF (1);
11632                                 CHECK_OPSIZE (6);
11633                                 token = read32 (ip + 2);
11634                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11635                                 mono_class_init (klass);
11636                                 NEW_DOMAINCONST (cfg, iargs [0]);
11637                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11638                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11639                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11640                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11641                                 ip += 6;
11642                                 inline_costs += 10 * num_calls++;
11643                                 break;
11644                         }
11645                         case CEE_MONO_OBJADDR:
11646                                 CHECK_STACK (1);
11647                                 --sp;
11648                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11649                                 ins->dreg = alloc_ireg_mp (cfg);
11650                                 ins->sreg1 = sp [0]->dreg;
11651                                 ins->type = STACK_MP;
11652                                 MONO_ADD_INS (cfg->cbb, ins);
11653                                 *sp++ = ins;
11654                                 ip += 2;
11655                                 break;
11656                         case CEE_MONO_LDNATIVEOBJ:
11657                                 /*
11658                                  * Similar to LDOBJ, but instead load the unmanaged
11659                                  * representation of the vtype to the stack.
11660                                  */
11661                                 CHECK_STACK (1);
11662                                 CHECK_OPSIZE (6);
11663                                 --sp;
11664                                 token = read32 (ip + 2);
11665                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11666                                 g_assert (klass->valuetype);
11667                                 mono_class_init (klass);
11668
11669                                 {
11670                                         MonoInst *src, *dest, *temp;
11671
11672                                         src = sp [0];
11673                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11674                                         temp->backend.is_pinvoke = 1;
11675                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11676                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11677
11678                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11679                                         dest->type = STACK_VTYPE;
11680                                         dest->klass = klass;
11681
11682                                         *sp ++ = dest;
11683                                         ip += 6;
11684                                 }
11685                                 break;
11686                         case CEE_MONO_RETOBJ: {
11687                                 /*
11688                                  * Same as RET, but return the native representation of a vtype
11689                                  * to the caller.
11690                                  */
11691                                 g_assert (cfg->ret);
11692                                 g_assert (mono_method_signature (method)->pinvoke);
11693                                 CHECK_STACK (1);
11694                                 --sp;
11695
11696                                 CHECK_OPSIZE (6);
11697                                 token = read32 (ip + 2);
11698                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11699
11700                                 if (!cfg->vret_addr) {
11701                                         g_assert (cfg->ret_var_is_local);
11702
11703                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11704                                 } else {
11705                                         EMIT_NEW_RETLOADA (cfg, ins);
11706                                 }
11707                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11708
11709                                 if (sp != stack_start)
11710                                         UNVERIFIED;
11711
11712                                 MONO_INST_NEW (cfg, ins, OP_BR);
11713                                 ins->inst_target_bb = end_bblock;
11714                                 MONO_ADD_INS (cfg->cbb, ins);
11715                                 link_bblock (cfg, cfg->cbb, end_bblock);
11716                                 start_new_bblock = 1;
11717                                 ip += 6;
11718                                 break;
11719                         }
11720                         case CEE_MONO_SAVE_LMF:
11721                         case CEE_MONO_RESTORE_LMF:
11722                                 ip += 2;
11723                                 break;
11724                         case CEE_MONO_CLASSCONST:
11725                                 CHECK_STACK_OVF (1);
11726                                 CHECK_OPSIZE (6);
11727                                 token = read32 (ip + 2);
11728                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11729                                 *sp++ = ins;
11730                                 ip += 6;
11731                                 inline_costs += 10 * num_calls++;
11732                                 break;
11733                         case CEE_MONO_NOT_TAKEN:
11734                                 cfg->cbb->out_of_line = TRUE;
11735                                 ip += 2;
11736                                 break;
11737                         case CEE_MONO_TLS: {
11738                                 MonoTlsKey key;
11739
11740                                 CHECK_STACK_OVF (1);
11741                                 CHECK_OPSIZE (6);
11742                                 key = (MonoTlsKey)read32 (ip + 2);
11743                                 g_assert (key < TLS_KEY_NUM);
11744
11745                                 ins = mono_create_tls_get (cfg, key);
11746                                 g_assert (ins);
11747                                 ins->type = STACK_PTR;
11748                                 *sp++ = ins;
11749                                 ip += 6;
11750                                 break;
11751                         }
11752                         case CEE_MONO_DYN_CALL: {
11753                                 MonoCallInst *call;
11754
11755                                 /* It would be easier to call a trampoline, but that would put an
11756                                  * extra frame on the stack, confusing exception handling. So
11757                                  * implement it inline using an opcode for now.
11758                                  */
11759
11760                                 if (!cfg->dyn_call_var) {
11761                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11762                                         /* prevent it from being register allocated */
11763                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11764                                 }
11765
11766                                 /* Has to use a call inst since it local regalloc expects it */
11767                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11768                                 ins = (MonoInst*)call;
11769                                 sp -= 2;
11770                                 ins->sreg1 = sp [0]->dreg;
11771                                 ins->sreg2 = sp [1]->dreg;
11772                                 MONO_ADD_INS (cfg->cbb, ins);
11773
11774                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11775
11776                                 ip += 2;
11777                                 inline_costs += 10 * num_calls++;
11778
11779                                 break;
11780                         }
11781                         case CEE_MONO_MEMORY_BARRIER: {
11782                                 CHECK_OPSIZE (6);
11783                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11784                                 ip += 6;
11785                                 break;
11786                         }
11787                         case CEE_MONO_ATOMIC_STORE_I4: {
11788                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11789
11790                                 CHECK_OPSIZE (6);
11791                                 CHECK_STACK (2);
11792                                 sp -= 2;
11793
11794                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11795                                 ins->dreg = sp [0]->dreg;
11796                                 ins->sreg1 = sp [1]->dreg;
11797                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11798                                 MONO_ADD_INS (cfg->cbb, ins);
11799
11800                                 ip += 6;
11801                                 break;
11802                         }
11803                         case CEE_MONO_JIT_ATTACH: {
11804                                 MonoInst *args [16], *domain_ins;
11805                                 MonoInst *ad_ins, *jit_tls_ins;
11806                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11807
11808                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11809
11810                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11811
11812                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11813                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11814
11815                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11816                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11817
11818                                 if (ad_ins && jit_tls_ins) {
11819                                         NEW_BBLOCK (cfg, next_bb);
11820                                         NEW_BBLOCK (cfg, call_bb);
11821
11822                                         if (cfg->compile_aot) {
11823                                                 /* AOT code is only used in the root domain */
11824                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11825                                         } else {
11826                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11827                                         }
11828                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11829                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11830
11831                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11832                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11833
11834                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11835                                         MONO_START_BB (cfg, call_bb);
11836                                 }
11837
11838                                 /* AOT code is only used in the root domain */
11839                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11840                                 if (cfg->compile_aot) {
11841                                         MonoInst *addr;
11842
11843                                         /*
11844                                          * This is called on unattached threads, so it cannot go through the trampoline
11845                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11846                                          * instead.
11847                                          */
11848                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11849                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11850                                 } else {
11851                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11852                                 }
11853                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11854
11855                                 if (next_bb)
11856                                         MONO_START_BB (cfg, next_bb);
11857
11858                                 ip += 2;
11859                                 break;
11860                         }
11861                         case CEE_MONO_JIT_DETACH: {
11862                                 MonoInst *args [16];
11863
11864                                 /* Restore the original domain */
11865                                 dreg = alloc_ireg (cfg);
11866                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11867                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11868                                 ip += 2;
11869                                 break;
11870                         }
11871                         case CEE_MONO_CALLI_EXTRA_ARG: {
11872                                 MonoInst *addr;
11873                                 MonoMethodSignature *fsig;
11874                                 MonoInst *arg;
11875
11876                                 /*
11877                                  * This is the same as CEE_CALLI, but passes an additional argument
11878                                  * to the called method in llvmonly mode.
11879                                  * This is only used by delegate invoke wrappers to call the
11880                                  * actual delegate method.
11881                                  */
11882                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11883
11884                                 CHECK_OPSIZE (6);
11885                                 token = read32 (ip + 2);
11886
11887                                 ins = NULL;
11888
11889                                 cmethod = NULL;
11890                                 CHECK_STACK (1);
11891                                 --sp;
11892                                 addr = *sp;
11893                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11894                                 CHECK_CFG_ERROR;
11895
11896                                 if (cfg->llvm_only)
11897                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11898
11899                                 n = fsig->param_count + fsig->hasthis + 1;
11900
11901                                 CHECK_STACK (n);
11902
11903                                 sp -= n;
11904                                 arg = sp [n - 1];
11905
11906                                 if (cfg->llvm_only) {
11907                                         /*
11908                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11909                                          * cconv. This is set by mono_init_delegate ().
11910                                          */
11911                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11912                                                 MonoInst *callee = addr;
11913                                                 MonoInst *call, *localloc_ins;
11914                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11915                                                 int low_bit_reg = alloc_preg (cfg);
11916
11917                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11918                                                 NEW_BBLOCK (cfg, end_bb);
11919
11920                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11921                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11923
11924                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11925                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11926                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11927                                                 /*
11928                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11929                                                  */
11930                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11931                                                 ins->dreg = alloc_preg (cfg);
11932                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11933                                                 MONO_ADD_INS (cfg->cbb, ins);
11934                                                 localloc_ins = ins;
11935                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11936                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11937                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11938
11939                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11940                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11941
11942                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11943                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11944                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11945                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11946                                                 ins->dreg = call->dreg;
11947
11948                                                 MONO_START_BB (cfg, end_bb);
11949                                         } else {
11950                                                 /* Caller uses a normal calling conv */
11951
11952                                                 MonoInst *callee = addr;
11953                                                 MonoInst *call, *localloc_ins;
11954                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11955                                                 int low_bit_reg = alloc_preg (cfg);
11956
11957                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11958                                                 NEW_BBLOCK (cfg, end_bb);
11959
11960                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11961                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11962                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11963
11964                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
11965                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11966                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11967                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
11968                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11969                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11970                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
11971                                                 MONO_ADD_INS (cfg->cbb, addr);
11972                                                 /*
11973                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
11974                                                  */
11975                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11976                                                 ins->dreg = alloc_preg (cfg);
11977                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11978                                                 MONO_ADD_INS (cfg->cbb, ins);
11979                                                 localloc_ins = ins;
11980                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11981                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11982                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11983
11984                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11985                                                 ins->dreg = call->dreg;
11986                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11987
11988                                                 MONO_START_BB (cfg, end_bb);
11989                                         }
11990                                 } else {
11991                                         /* Same as CEE_CALLI */
11992                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
11993                                                 /*
11994                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
11995                                                  */
11996                                                 MonoInst *callee = addr;
11997
11998                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11999                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12000                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12001                                         } else {
12002                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12003                                         }
12004                                 }
12005
12006                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12007                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12008
12009                                 CHECK_CFG_EXCEPTION;
12010
12011                                 ip += 6;
12012                                 ins_flag = 0;
12013                                 constrained_class = NULL;
12014                                 break;
12015                         }
12016                         case CEE_MONO_LDDOMAIN:
12017                                 CHECK_STACK_OVF (1);
12018                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12019                                 ip += 2;
12020                                 *sp++ = ins;
12021                                 break;
12022                         case CEE_MONO_GET_LAST_ERROR:
12023                                 CHECK_OPSIZE (2);
12024                                 CHECK_STACK_OVF (1);
12025
12026                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12027                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12028                                 ins->type = STACK_I4;
12029                                 MONO_ADD_INS (cfg->cbb, ins);
12030
12031                                 ip += 2;
12032                                 *sp++ = ins;
12033                                 break;
12034                         case CEE_MONO_GET_RGCTX_ARG:
12035                                 CHECK_OPSIZE (2);
12036                                 CHECK_STACK_OVF (1);
12037
12038                                 mono_create_rgctx_var (cfg);
12039
12040                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12041                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12042                                 ins->sreg1 = cfg->rgctx_var->dreg;
12043                                 ins->type = STACK_PTR;
12044                                 MONO_ADD_INS (cfg->cbb, ins);
12045
12046                                 ip += 2;
12047                                 *sp++ = ins;
12048                                 break;
12049                         default:
12050                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12051                                 break;
12052                         }
12053                         break;
12054                 }
12055
12056                 case CEE_PREFIX1: {
12057                         CHECK_OPSIZE (2);
12058                         switch (ip [1]) {
12059                         case CEE_ARGLIST: {
12060                                 /* somewhat similar to LDTOKEN */
12061                                 MonoInst *addr, *vtvar;
12062                                 CHECK_STACK_OVF (1);
12063                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12064
12065                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12066                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12067
12068                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12069                                 ins->type = STACK_VTYPE;
12070                                 ins->klass = mono_defaults.argumenthandle_class;
12071                                 *sp++ = ins;
12072                                 ip += 2;
12073                                 break;
12074                         }
12075                         case CEE_CEQ:
12076                         case CEE_CGT:
12077                         case CEE_CGT_UN:
12078                         case CEE_CLT:
12079                         case CEE_CLT_UN: {
12080                                 MonoInst *cmp, *arg1, *arg2;
12081
12082                                 CHECK_STACK (2);
12083                                 sp -= 2;
12084                                 arg1 = sp [0];
12085                                 arg2 = sp [1];
12086
12087                                 /*
12088                                  * The following transforms:
12089                                  *    CEE_CEQ    into OP_CEQ
12090                                  *    CEE_CGT    into OP_CGT
12091                                  *    CEE_CGT_UN into OP_CGT_UN
12092                                  *    CEE_CLT    into OP_CLT
12093                                  *    CEE_CLT_UN into OP_CLT_UN
12094                                  */
12095                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12096
12097                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12098                                 cmp->sreg1 = arg1->dreg;
12099                                 cmp->sreg2 = arg2->dreg;
12100                                 type_from_op (cfg, cmp, arg1, arg2);
12101                                 CHECK_TYPE (cmp);
12102                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12103                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12104                                         cmp->opcode = OP_LCOMPARE;
12105                                 else if (arg1->type == STACK_R4)
12106                                         cmp->opcode = OP_RCOMPARE;
12107                                 else if (arg1->type == STACK_R8)
12108                                         cmp->opcode = OP_FCOMPARE;
12109                                 else
12110                                         cmp->opcode = OP_ICOMPARE;
12111                                 MONO_ADD_INS (cfg->cbb, cmp);
12112                                 ins->type = STACK_I4;
12113                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12114                                 type_from_op (cfg, ins, arg1, arg2);
12115
12116                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12117                                         /*
12118                                          * The backends expect the fceq opcodes to do the
12119                                          * comparison too.
12120                                          */
12121                                         ins->sreg1 = cmp->sreg1;
12122                                         ins->sreg2 = cmp->sreg2;
12123                                         NULLIFY_INS (cmp);
12124                                 }
12125                                 MONO_ADD_INS (cfg->cbb, ins);
12126                                 *sp++ = ins;
12127                                 ip += 2;
12128                                 break;
12129                         }
12130                         case CEE_LDFTN: {
12131                                 MonoInst *argconst;
12132                                 MonoMethod *cil_method;
12133
12134                                 CHECK_STACK_OVF (1);
12135                                 CHECK_OPSIZE (6);
12136                                 n = read32 (ip + 2);
12137                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12138                                 CHECK_CFG_ERROR;
12139
12140                                 mono_class_init (cmethod->klass);
12141
12142                                 mono_save_token_info (cfg, image, n, cmethod);
12143
12144                                 context_used = mini_method_check_context_used (cfg, cmethod);
12145
12146                                 cil_method = cmethod;
12147                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12148                                         emit_method_access_failure (cfg, method, cil_method);
12149
12150                                 if (mono_security_core_clr_enabled ())
12151                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12152
12153                                 /*
12154                                  * Optimize the common case of ldftn+delegate creation
12155                                  */
12156                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12157                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12158                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12159                                                 MonoInst *target_ins, *handle_ins;
12160                                                 MonoMethod *invoke;
12161                                                 int invoke_context_used;
12162
12163                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12164                                                 if (!invoke || !mono_method_signature (invoke))
12165                                                         LOAD_ERROR;
12166
12167                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12168
12169                                                 target_ins = sp [-1];
12170
12171                                                 if (mono_security_core_clr_enabled ())
12172                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12173
12174                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12175                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12176                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12177                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12178                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12179                                                         }
12180                                                 }
12181
12182                                                 /* FIXME: SGEN support */
12183                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12184                                                         ip += 6;
12185                                                         if (cfg->verbose_level > 3)
12186                                                                 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));
12187                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12188                                                                 sp --;
12189                                                                 *sp = handle_ins;
12190                                                                 CHECK_CFG_EXCEPTION;
12191                                                                 ip += 5;
12192                                                                 sp ++;
12193                                                                 break;
12194                                                         }
12195                                                         ip -= 6;
12196                                                 }
12197                                         }
12198                                 }
12199
12200                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12201                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12202                                 *sp++ = ins;
12203
12204                                 ip += 6;
12205                                 inline_costs += 10 * num_calls++;
12206                                 break;
12207                         }
12208                         case CEE_LDVIRTFTN: {
12209                                 MonoInst *args [2];
12210
12211                                 CHECK_STACK (1);
12212                                 CHECK_OPSIZE (6);
12213                                 n = read32 (ip + 2);
12214                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12215                                 CHECK_CFG_ERROR;
12216
12217                                 mono_class_init (cmethod->klass);
12218
12219                                 context_used = mini_method_check_context_used (cfg, cmethod);
12220
12221                                 if (mono_security_core_clr_enabled ())
12222                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12223
12224                                 /*
12225                                  * Optimize the common case of ldvirtftn+delegate creation
12226                                  */
12227                                 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)) {
12228                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12229                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12230                                                 MonoInst *target_ins, *handle_ins;
12231                                                 MonoMethod *invoke;
12232                                                 int invoke_context_used;
12233                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12234
12235                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12236                                                 if (!invoke || !mono_method_signature (invoke))
12237                                                         LOAD_ERROR;
12238
12239                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12240
12241                                                 target_ins = sp [-1];
12242
12243                                                 if (mono_security_core_clr_enabled ())
12244                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12245
12246                                                 /* FIXME: SGEN support */
12247                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12248                                                         ip += 6;
12249                                                         if (cfg->verbose_level > 3)
12250                                                                 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));
12251                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12252                                                                 sp -= 2;
12253                                                                 *sp = handle_ins;
12254                                                                 CHECK_CFG_EXCEPTION;
12255                                                                 ip += 5;
12256                                                                 sp ++;
12257                                                                 break;
12258                                                         }
12259                                                         ip -= 6;
12260                                                 }
12261                                         }
12262                                 }
12263
12264                                 --sp;
12265                                 args [0] = *sp;
12266
12267                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12268                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12269
12270                                 if (context_used)
12271                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12272                                 else
12273                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12274
12275                                 ip += 6;
12276                                 inline_costs += 10 * num_calls++;
12277                                 break;
12278                         }
12279                         case CEE_LDARG:
12280                                 CHECK_STACK_OVF (1);
12281                                 CHECK_OPSIZE (4);
12282                                 n = read16 (ip + 2);
12283                                 CHECK_ARG (n);
12284                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12285                                 *sp++ = ins;
12286                                 ip += 4;
12287                                 break;
12288                         case CEE_LDARGA:
12289                                 CHECK_STACK_OVF (1);
12290                                 CHECK_OPSIZE (4);
12291                                 n = read16 (ip + 2);
12292                                 CHECK_ARG (n);
12293                                 NEW_ARGLOADA (cfg, ins, n);
12294                                 MONO_ADD_INS (cfg->cbb, ins);
12295                                 *sp++ = ins;
12296                                 ip += 4;
12297                                 break;
12298                         case CEE_STARG:
12299                                 CHECK_STACK (1);
12300                                 --sp;
12301                                 CHECK_OPSIZE (4);
12302                                 n = read16 (ip + 2);
12303                                 CHECK_ARG (n);
12304                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12305                                         UNVERIFIED;
12306                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12307                                 ip += 4;
12308                                 break;
12309                         case CEE_LDLOC:
12310                                 CHECK_STACK_OVF (1);
12311                                 CHECK_OPSIZE (4);
12312                                 n = read16 (ip + 2);
12313                                 CHECK_LOCAL (n);
12314                                 if ((ip [4] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 4) && header->locals [n]->type == MONO_TYPE_VALUETYPE) {
12315                                         /* Avoid loading a struct just to load one of its fields */
12316                                         EMIT_NEW_LOCLOADA (cfg, ins, n);
12317                                 } else {
12318                                         EMIT_NEW_LOCLOAD (cfg, ins, n);
12319                                 }
12320                                 *sp++ = ins;
12321                                 ip += 4;
12322                                 break;
12323                         case CEE_LDLOCA: {
12324                                 unsigned char *tmp_ip;
12325                                 CHECK_STACK_OVF (1);
12326                                 CHECK_OPSIZE (4);
12327                                 n = read16 (ip + 2);
12328                                 CHECK_LOCAL (n);
12329
12330                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12331                                         ip = tmp_ip;
12332                                         inline_costs += 1;
12333                                         break;
12334                                 }
12335
12336                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12337                                 *sp++ = ins;
12338                                 ip += 4;
12339                                 break;
12340                         }
12341                         case CEE_STLOC:
12342                                 CHECK_STACK (1);
12343                                 --sp;
12344                                 CHECK_OPSIZE (4);
12345                                 n = read16 (ip + 2);
12346                                 CHECK_LOCAL (n);
12347                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12348                                         UNVERIFIED;
12349                                 emit_stloc_ir (cfg, sp, header, n);
12350                                 ip += 4;
12351                                 inline_costs += 1;
12352                                 break;
12353                         case CEE_LOCALLOC: {
12354                                 CHECK_STACK (1);
12355                                 MonoBasicBlock *non_zero_bb, *end_bb;
12356                                 int alloc_ptr = alloc_preg (cfg);
12357                                 --sp;
12358                                 if (sp != stack_start)
12359                                         UNVERIFIED;
12360                                 if (cfg->method != method)
12361                                         /*
12362                                          * Inlining this into a loop in a parent could lead to
12363                                          * stack overflows which is different behavior than the
12364                                          * non-inlined case, thus disable inlining in this case.
12365                                          */
12366                                         INLINE_FAILURE("localloc");
12367
12368                                 NEW_BBLOCK (cfg, non_zero_bb);
12369                                 NEW_BBLOCK (cfg, end_bb);
12370
12371                                 /* if size != zero */
12372                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12373                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12374
12375                                 //size is zero, so result is NULL
12376                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12377                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12378
12379                                 MONO_START_BB (cfg, non_zero_bb);
12380                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12381                                 ins->dreg = alloc_ptr;
12382                                 ins->sreg1 = sp [0]->dreg;
12383                                 ins->type = STACK_PTR;
12384                                 MONO_ADD_INS (cfg->cbb, ins);
12385
12386                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12387                                 if (init_locals)
12388                                         ins->flags |= MONO_INST_INIT;
12389
12390                                 MONO_START_BB (cfg, end_bb);
12391                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12392                                 ins->type = STACK_PTR;
12393
12394                                 *sp++ = ins;
12395                                 ip += 2;
12396                                 break;
12397                         }
12398                         case CEE_ENDFILTER: {
12399                                 MonoExceptionClause *clause, *nearest;
12400                                 int cc;
12401
12402                                 CHECK_STACK (1);
12403                                 --sp;
12404                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12405                                         UNVERIFIED;
12406                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12407                                 ins->sreg1 = (*sp)->dreg;
12408                                 MONO_ADD_INS (cfg->cbb, ins);
12409                                 start_new_bblock = 1;
12410                                 ip += 2;
12411
12412                                 nearest = NULL;
12413                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12414                                         clause = &header->clauses [cc];
12415                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12416                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12417                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12418                                                 nearest = clause;
12419                                 }
12420                                 g_assert (nearest);
12421                                 if ((ip - header->code) != nearest->handler_offset)
12422                                         UNVERIFIED;
12423
12424                                 break;
12425                         }
12426                         case CEE_UNALIGNED_:
12427                                 ins_flag |= MONO_INST_UNALIGNED;
12428                                 /* FIXME: record alignment? we can assume 1 for now */
12429                                 CHECK_OPSIZE (3);
12430                                 ip += 3;
12431                                 break;
12432                         case CEE_VOLATILE_:
12433                                 ins_flag |= MONO_INST_VOLATILE;
12434                                 ip += 2;
12435                                 break;
12436                         case CEE_TAIL_:
12437                                 ins_flag   |= MONO_INST_TAILCALL;
12438                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12439                                 /* Can't inline tail calls at this time */
12440                                 inline_costs += 100000;
12441                                 ip += 2;
12442                                 break;
12443                         case CEE_INITOBJ:
12444                                 CHECK_STACK (1);
12445                                 --sp;
12446                                 CHECK_OPSIZE (6);
12447                                 token = read32 (ip + 2);
12448                                 klass = mini_get_class (method, token, generic_context);
12449                                 CHECK_TYPELOAD (klass);
12450                                 if (generic_class_is_reference_type (cfg, klass))
12451                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12452                                 else
12453                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12454                                 ip += 6;
12455                                 inline_costs += 1;
12456                                 break;
12457                         case CEE_CONSTRAINED_:
12458                                 CHECK_OPSIZE (6);
12459                                 token = read32 (ip + 2);
12460                                 constrained_class = mini_get_class (method, token, generic_context);
12461                                 CHECK_TYPELOAD (constrained_class);
12462                                 ip += 6;
12463                                 break;
12464                         case CEE_CPBLK:
12465                                 CHECK_STACK (3);
12466                                 sp -= 3;
12467                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12468                                 ip += 2;
12469                                 ins_flag = 0;
12470                                 inline_costs += 1;
12471                                 break;
12472                         case CEE_INITBLK:
12473                                 CHECK_STACK (3);
12474                                 sp -= 3;
12475                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12476                                 ip += 2;
12477                                 ins_flag = 0;
12478                                 inline_costs += 1;
12479                                 break;
12480                         case CEE_NO_:
12481                                 CHECK_OPSIZE (3);
12482                                 if (ip [2] & 0x1)
12483                                         ins_flag |= MONO_INST_NOTYPECHECK;
12484                                 if (ip [2] & 0x2)
12485                                         ins_flag |= MONO_INST_NORANGECHECK;
12486                                 /* we ignore the no-nullcheck for now since we
12487                                  * really do it explicitly only when doing callvirt->call
12488                                  */
12489                                 ip += 3;
12490                                 break;
12491                         case CEE_RETHROW: {
12492                                 MonoInst *load;
12493                                 int handler_offset = -1;
12494
12495                                 for (i = 0; i < header->num_clauses; ++i) {
12496                                         MonoExceptionClause *clause = &header->clauses [i];
12497                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12498                                                 handler_offset = clause->handler_offset;
12499                                                 break;
12500                                         }
12501                                 }
12502
12503                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12504
12505                                 if (handler_offset == -1)
12506                                         UNVERIFIED;
12507
12508                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12509                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12510                                 ins->sreg1 = load->dreg;
12511                                 MONO_ADD_INS (cfg->cbb, ins);
12512
12513                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12514                                 MONO_ADD_INS (cfg->cbb, ins);
12515
12516                                 sp = stack_start;
12517                                 link_bblock (cfg, cfg->cbb, end_bblock);
12518                                 start_new_bblock = 1;
12519                                 ip += 2;
12520                                 break;
12521                         }
12522                         case CEE_SIZEOF: {
12523                                 guint32 val;
12524                                 int ialign;
12525
12526                                 CHECK_STACK_OVF (1);
12527                                 CHECK_OPSIZE (6);
12528                                 token = read32 (ip + 2);
12529                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12530                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12531                                         CHECK_CFG_ERROR;
12532
12533                                         val = mono_type_size (type, &ialign);
12534                                 } else {
12535                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12536                                         CHECK_TYPELOAD (klass);
12537
12538                                         val = mono_type_size (&klass->byval_arg, &ialign);
12539
12540                                         if (mini_is_gsharedvt_klass (klass))
12541                                                 GSHAREDVT_FAILURE (*ip);
12542                                 }
12543                                 EMIT_NEW_ICONST (cfg, ins, val);
12544                                 *sp++= ins;
12545                                 ip += 6;
12546                                 break;
12547                         }
12548                         case CEE_REFANYTYPE: {
12549                                 MonoInst *src_var, *src;
12550
12551                                 GSHAREDVT_FAILURE (*ip);
12552
12553                                 CHECK_STACK (1);
12554                                 --sp;
12555
12556                                 // FIXME:
12557                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12558                                 if (!src_var)
12559                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12560                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12561                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12562                                 *sp++ = ins;
12563                                 ip += 2;
12564                                 break;
12565                         }
12566                         case CEE_READONLY_:
12567                                 readonly = TRUE;
12568                                 ip += 2;
12569                                 break;
12570
12571                         case CEE_UNUSED56:
12572                         case CEE_UNUSED57:
12573                         case CEE_UNUSED70:
12574                         case CEE_UNUSED:
12575                         case CEE_UNUSED99:
12576                                 UNVERIFIED;
12577
12578                         default:
12579                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12580                                 UNVERIFIED;
12581                         }
12582                         break;
12583                 }
12584                 case CEE_UNUSED58:
12585                 case CEE_UNUSED1:
12586                         UNVERIFIED;
12587
12588                 default:
12589                         g_warning ("opcode 0x%02x not handled", *ip);
12590                         UNVERIFIED;
12591                 }
12592         }
12593         if (start_new_bblock != 1)
12594                 UNVERIFIED;
12595
12596         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12597         if (cfg->cbb->next_bb) {
12598                 /* This could already be set because of inlining, #693905 */
12599                 MonoBasicBlock *bb = cfg->cbb;
12600
12601                 while (bb->next_bb)
12602                         bb = bb->next_bb;
12603                 bb->next_bb = end_bblock;
12604         } else {
12605                 cfg->cbb->next_bb = end_bblock;
12606         }
12607
12608         if (cfg->method == method && cfg->domainvar) {
12609                 MonoInst *store;
12610                 MonoInst *get_domain;
12611
12612                 cfg->cbb = init_localsbb;
12613
12614                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12615                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12616                 MONO_ADD_INS (cfg->cbb, store);
12617         }
12618
12619 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12620         if (cfg->compile_aot)
12621                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12622                 mono_get_got_var (cfg);
12623 #endif
12624
12625         if (cfg->method == method && cfg->got_var)
12626                 mono_emit_load_got_addr (cfg);
12627
12628         if (init_localsbb) {
12629                 cfg->cbb = init_localsbb;
12630                 cfg->ip = NULL;
12631                 for (i = 0; i < header->num_locals; ++i) {
12632                         emit_init_local (cfg, i, header->locals [i], init_locals);
12633                 }
12634         }
12635
12636         if (cfg->init_ref_vars && cfg->method == method) {
12637                 /* Emit initialization for ref vars */
12638                 // FIXME: Avoid duplication initialization for IL locals.
12639                 for (i = 0; i < cfg->num_varinfo; ++i) {
12640                         MonoInst *ins = cfg->varinfo [i];
12641
12642                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12643                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12644                 }
12645         }
12646
12647         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12648                 cfg->cbb = init_localsbb;
12649                 emit_push_lmf (cfg);
12650         }
12651
12652         cfg->cbb = init_localsbb;
12653         emit_instrumentation_call (cfg, mono_profiler_raise_method_enter, TRUE);
12654
12655         if (seq_points) {
12656                 MonoBasicBlock *bb;
12657
12658                 /*
12659                  * Make seq points at backward branch targets interruptable.
12660                  */
12661                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12662                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12663                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12664         }
12665
12666         /* Add a sequence point for method entry/exit events */
12667         if (seq_points && cfg->gen_sdb_seq_points) {
12668                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12669                 MONO_ADD_INS (init_localsbb, ins);
12670                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12671                 MONO_ADD_INS (cfg->bb_exit, ins);
12672         }
12673
12674         /*
12675          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12676          * the code they refer to was dead (#11880).
12677          */
12678         if (sym_seq_points) {
12679                 for (i = 0; i < header->code_size; ++i) {
12680                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12681                                 MonoInst *ins;
12682
12683                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12684                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12685                         }
12686                 }
12687         }
12688
12689         cfg->ip = NULL;
12690
12691         if (cfg->method == method) {
12692                 MonoBasicBlock *bb;
12693                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12694                         if (bb == cfg->bb_init)
12695                                 bb->region = -1;
12696                         else
12697                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12698                         if (cfg->spvars)
12699                                 mono_create_spvar_for_region (cfg, bb->region);
12700                         if (cfg->verbose_level > 2)
12701                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12702                 }
12703         } else {
12704                 MonoBasicBlock *bb;
12705                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12706                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12707                         bb->real_offset = inline_offset;
12708                 }
12709         }
12710
12711         if (inline_costs < 0) {
12712                 char *mname;
12713
12714                 /* Method is too large */
12715                 mname = mono_method_full_name (method, TRUE);
12716                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12717                 g_free (mname);
12718         }
12719
12720         if ((cfg->verbose_level > 2) && (cfg->method == method))
12721                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12722
12723         goto cleanup;
12724
12725 mono_error_exit:
12726         g_assert (!mono_error_ok (&cfg->error));
12727         goto cleanup;
12728
12729  exception_exit:
12730         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12731         goto cleanup;
12732
12733  unverified:
12734         set_exception_type_from_invalid_il (cfg, method, ip);
12735         goto cleanup;
12736
12737  cleanup:
12738         g_slist_free (class_inits);
12739         mono_basic_block_free (original_bb);
12740         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12741         if (cfg->exception_type)
12742                 return -1;
12743         else
12744                 return inline_costs;
12745 }
12746
12747 static int
12748 store_membase_reg_to_store_membase_imm (int opcode)
12749 {
12750         switch (opcode) {
12751         case OP_STORE_MEMBASE_REG:
12752                 return OP_STORE_MEMBASE_IMM;
12753         case OP_STOREI1_MEMBASE_REG:
12754                 return OP_STOREI1_MEMBASE_IMM;
12755         case OP_STOREI2_MEMBASE_REG:
12756                 return OP_STOREI2_MEMBASE_IMM;
12757         case OP_STOREI4_MEMBASE_REG:
12758                 return OP_STOREI4_MEMBASE_IMM;
12759         case OP_STOREI8_MEMBASE_REG:
12760                 return OP_STOREI8_MEMBASE_IMM;
12761         default:
12762                 g_assert_not_reached ();
12763         }
12764
12765         return -1;
12766 }
12767
12768 int
12769 mono_op_to_op_imm (int opcode)
12770 {
12771         switch (opcode) {
12772         case OP_IADD:
12773                 return OP_IADD_IMM;
12774         case OP_ISUB:
12775                 return OP_ISUB_IMM;
12776         case OP_IDIV:
12777                 return OP_IDIV_IMM;
12778         case OP_IDIV_UN:
12779                 return OP_IDIV_UN_IMM;
12780         case OP_IREM:
12781                 return OP_IREM_IMM;
12782         case OP_IREM_UN:
12783                 return OP_IREM_UN_IMM;
12784         case OP_IMUL:
12785                 return OP_IMUL_IMM;
12786         case OP_IAND:
12787                 return OP_IAND_IMM;
12788         case OP_IOR:
12789                 return OP_IOR_IMM;
12790         case OP_IXOR:
12791                 return OP_IXOR_IMM;
12792         case OP_ISHL:
12793                 return OP_ISHL_IMM;
12794         case OP_ISHR:
12795                 return OP_ISHR_IMM;
12796         case OP_ISHR_UN:
12797                 return OP_ISHR_UN_IMM;
12798
12799         case OP_LADD:
12800                 return OP_LADD_IMM;
12801         case OP_LSUB:
12802                 return OP_LSUB_IMM;
12803         case OP_LAND:
12804                 return OP_LAND_IMM;
12805         case OP_LOR:
12806                 return OP_LOR_IMM;
12807         case OP_LXOR:
12808                 return OP_LXOR_IMM;
12809         case OP_LSHL:
12810                 return OP_LSHL_IMM;
12811         case OP_LSHR:
12812                 return OP_LSHR_IMM;
12813         case OP_LSHR_UN:
12814                 return OP_LSHR_UN_IMM;
12815 #if SIZEOF_REGISTER == 8
12816         case OP_LREM:
12817                 return OP_LREM_IMM;
12818 #endif
12819
12820         case OP_COMPARE:
12821                 return OP_COMPARE_IMM;
12822         case OP_ICOMPARE:
12823                 return OP_ICOMPARE_IMM;
12824         case OP_LCOMPARE:
12825                 return OP_LCOMPARE_IMM;
12826
12827         case OP_STORE_MEMBASE_REG:
12828                 return OP_STORE_MEMBASE_IMM;
12829         case OP_STOREI1_MEMBASE_REG:
12830                 return OP_STOREI1_MEMBASE_IMM;
12831         case OP_STOREI2_MEMBASE_REG:
12832                 return OP_STOREI2_MEMBASE_IMM;
12833         case OP_STOREI4_MEMBASE_REG:
12834                 return OP_STOREI4_MEMBASE_IMM;
12835
12836 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12837         case OP_X86_PUSH:
12838                 return OP_X86_PUSH_IMM;
12839         case OP_X86_COMPARE_MEMBASE_REG:
12840                 return OP_X86_COMPARE_MEMBASE_IMM;
12841 #endif
12842 #if defined(TARGET_AMD64)
12843         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12844                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12845 #endif
12846         case OP_VOIDCALL_REG:
12847                 return OP_VOIDCALL;
12848         case OP_CALL_REG:
12849                 return OP_CALL;
12850         case OP_LCALL_REG:
12851                 return OP_LCALL;
12852         case OP_FCALL_REG:
12853                 return OP_FCALL;
12854         case OP_LOCALLOC:
12855                 return OP_LOCALLOC_IMM;
12856         }
12857
12858         return -1;
12859 }
12860
12861 static int
12862 ldind_to_load_membase (int opcode)
12863 {
12864         switch (opcode) {
12865         case CEE_LDIND_I1:
12866                 return OP_LOADI1_MEMBASE;
12867         case CEE_LDIND_U1:
12868                 return OP_LOADU1_MEMBASE;
12869         case CEE_LDIND_I2:
12870                 return OP_LOADI2_MEMBASE;
12871         case CEE_LDIND_U2:
12872                 return OP_LOADU2_MEMBASE;
12873         case CEE_LDIND_I4:
12874                 return OP_LOADI4_MEMBASE;
12875         case CEE_LDIND_U4:
12876                 return OP_LOADU4_MEMBASE;
12877         case CEE_LDIND_I:
12878                 return OP_LOAD_MEMBASE;
12879         case CEE_LDIND_REF:
12880                 return OP_LOAD_MEMBASE;
12881         case CEE_LDIND_I8:
12882                 return OP_LOADI8_MEMBASE;
12883         case CEE_LDIND_R4:
12884                 return OP_LOADR4_MEMBASE;
12885         case CEE_LDIND_R8:
12886                 return OP_LOADR8_MEMBASE;
12887         default:
12888                 g_assert_not_reached ();
12889         }
12890
12891         return -1;
12892 }
12893
12894 static int
12895 stind_to_store_membase (int opcode)
12896 {
12897         switch (opcode) {
12898         case CEE_STIND_I1:
12899                 return OP_STOREI1_MEMBASE_REG;
12900         case CEE_STIND_I2:
12901                 return OP_STOREI2_MEMBASE_REG;
12902         case CEE_STIND_I4:
12903                 return OP_STOREI4_MEMBASE_REG;
12904         case CEE_STIND_I:
12905         case CEE_STIND_REF:
12906                 return OP_STORE_MEMBASE_REG;
12907         case CEE_STIND_I8:
12908                 return OP_STOREI8_MEMBASE_REG;
12909         case CEE_STIND_R4:
12910                 return OP_STORER4_MEMBASE_REG;
12911         case CEE_STIND_R8:
12912                 return OP_STORER8_MEMBASE_REG;
12913         default:
12914                 g_assert_not_reached ();
12915         }
12916
12917         return -1;
12918 }
12919
12920 int
12921 mono_load_membase_to_load_mem (int opcode)
12922 {
12923         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12924 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12925         switch (opcode) {
12926         case OP_LOAD_MEMBASE:
12927                 return OP_LOAD_MEM;
12928         case OP_LOADU1_MEMBASE:
12929                 return OP_LOADU1_MEM;
12930         case OP_LOADU2_MEMBASE:
12931                 return OP_LOADU2_MEM;
12932         case OP_LOADI4_MEMBASE:
12933                 return OP_LOADI4_MEM;
12934         case OP_LOADU4_MEMBASE:
12935                 return OP_LOADU4_MEM;
12936 #if SIZEOF_REGISTER == 8
12937         case OP_LOADI8_MEMBASE:
12938                 return OP_LOADI8_MEM;
12939 #endif
12940         }
12941 #endif
12942
12943         return -1;
12944 }
12945
12946 static inline int
12947 op_to_op_dest_membase (int store_opcode, int opcode)
12948 {
12949 #if defined(TARGET_X86)
12950         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12951                 return -1;
12952
12953         switch (opcode) {
12954         case OP_IADD:
12955                 return OP_X86_ADD_MEMBASE_REG;
12956         case OP_ISUB:
12957                 return OP_X86_SUB_MEMBASE_REG;
12958         case OP_IAND:
12959                 return OP_X86_AND_MEMBASE_REG;
12960         case OP_IOR:
12961                 return OP_X86_OR_MEMBASE_REG;
12962         case OP_IXOR:
12963                 return OP_X86_XOR_MEMBASE_REG;
12964         case OP_ADD_IMM:
12965         case OP_IADD_IMM:
12966                 return OP_X86_ADD_MEMBASE_IMM;
12967         case OP_SUB_IMM:
12968         case OP_ISUB_IMM:
12969                 return OP_X86_SUB_MEMBASE_IMM;
12970         case OP_AND_IMM:
12971         case OP_IAND_IMM:
12972                 return OP_X86_AND_MEMBASE_IMM;
12973         case OP_OR_IMM:
12974         case OP_IOR_IMM:
12975                 return OP_X86_OR_MEMBASE_IMM;
12976         case OP_XOR_IMM:
12977         case OP_IXOR_IMM:
12978                 return OP_X86_XOR_MEMBASE_IMM;
12979         case OP_MOVE:
12980                 return OP_NOP;
12981         }
12982 #endif
12983
12984 #if defined(TARGET_AMD64)
12985         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12986                 return -1;
12987
12988         switch (opcode) {
12989         case OP_IADD:
12990                 return OP_X86_ADD_MEMBASE_REG;
12991         case OP_ISUB:
12992                 return OP_X86_SUB_MEMBASE_REG;
12993         case OP_IAND:
12994                 return OP_X86_AND_MEMBASE_REG;
12995         case OP_IOR:
12996                 return OP_X86_OR_MEMBASE_REG;
12997         case OP_IXOR:
12998                 return OP_X86_XOR_MEMBASE_REG;
12999         case OP_IADD_IMM:
13000                 return OP_X86_ADD_MEMBASE_IMM;
13001         case OP_ISUB_IMM:
13002                 return OP_X86_SUB_MEMBASE_IMM;
13003         case OP_IAND_IMM:
13004                 return OP_X86_AND_MEMBASE_IMM;
13005         case OP_IOR_IMM:
13006                 return OP_X86_OR_MEMBASE_IMM;
13007         case OP_IXOR_IMM:
13008                 return OP_X86_XOR_MEMBASE_IMM;
13009         case OP_LADD:
13010                 return OP_AMD64_ADD_MEMBASE_REG;
13011         case OP_LSUB:
13012                 return OP_AMD64_SUB_MEMBASE_REG;
13013         case OP_LAND:
13014                 return OP_AMD64_AND_MEMBASE_REG;
13015         case OP_LOR:
13016                 return OP_AMD64_OR_MEMBASE_REG;
13017         case OP_LXOR:
13018                 return OP_AMD64_XOR_MEMBASE_REG;
13019         case OP_ADD_IMM:
13020         case OP_LADD_IMM:
13021                 return OP_AMD64_ADD_MEMBASE_IMM;
13022         case OP_SUB_IMM:
13023         case OP_LSUB_IMM:
13024                 return OP_AMD64_SUB_MEMBASE_IMM;
13025         case OP_AND_IMM:
13026         case OP_LAND_IMM:
13027                 return OP_AMD64_AND_MEMBASE_IMM;
13028         case OP_OR_IMM:
13029         case OP_LOR_IMM:
13030                 return OP_AMD64_OR_MEMBASE_IMM;
13031         case OP_XOR_IMM:
13032         case OP_LXOR_IMM:
13033                 return OP_AMD64_XOR_MEMBASE_IMM;
13034         case OP_MOVE:
13035                 return OP_NOP;
13036         }
13037 #endif
13038
13039         return -1;
13040 }
13041
13042 static inline int
13043 op_to_op_store_membase (int store_opcode, int opcode)
13044 {
13045 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13046         switch (opcode) {
13047         case OP_ICEQ:
13048                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13049                         return OP_X86_SETEQ_MEMBASE;
13050         case OP_CNE:
13051                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13052                         return OP_X86_SETNE_MEMBASE;
13053         }
13054 #endif
13055
13056         return -1;
13057 }
13058
13059 static inline int
13060 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13061 {
13062 #ifdef TARGET_X86
13063         /* FIXME: This has sign extension issues */
13064         /*
13065         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13066                 return OP_X86_COMPARE_MEMBASE8_IMM;
13067         */
13068
13069         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13070                 return -1;
13071
13072         switch (opcode) {
13073         case OP_X86_PUSH:
13074                 return OP_X86_PUSH_MEMBASE;
13075         case OP_COMPARE_IMM:
13076         case OP_ICOMPARE_IMM:
13077                 return OP_X86_COMPARE_MEMBASE_IMM;
13078         case OP_COMPARE:
13079         case OP_ICOMPARE:
13080                 return OP_X86_COMPARE_MEMBASE_REG;
13081         }
13082 #endif
13083
13084 #ifdef TARGET_AMD64
13085         /* FIXME: This has sign extension issues */
13086         /*
13087         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13088                 return OP_X86_COMPARE_MEMBASE8_IMM;
13089         */
13090
13091         switch (opcode) {
13092         case OP_X86_PUSH:
13093                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13094                         return OP_X86_PUSH_MEMBASE;
13095                 break;
13096                 /* FIXME: This only works for 32 bit immediates
13097         case OP_COMPARE_IMM:
13098         case OP_LCOMPARE_IMM:
13099                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13100                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13101                 */
13102         case OP_ICOMPARE_IMM:
13103                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13104                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13105                 break;
13106         case OP_COMPARE:
13107         case OP_LCOMPARE:
13108                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13109                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13110                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13111                         return OP_AMD64_COMPARE_MEMBASE_REG;
13112                 break;
13113         case OP_ICOMPARE:
13114                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13115                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13116                 break;
13117         }
13118 #endif
13119
13120         return -1;
13121 }
13122
13123 static inline int
13124 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13125 {
13126 #ifdef TARGET_X86
13127         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13128                 return -1;
13129
13130         switch (opcode) {
13131         case OP_COMPARE:
13132         case OP_ICOMPARE:
13133                 return OP_X86_COMPARE_REG_MEMBASE;
13134         case OP_IADD:
13135                 return OP_X86_ADD_REG_MEMBASE;
13136         case OP_ISUB:
13137                 return OP_X86_SUB_REG_MEMBASE;
13138         case OP_IAND:
13139                 return OP_X86_AND_REG_MEMBASE;
13140         case OP_IOR:
13141                 return OP_X86_OR_REG_MEMBASE;
13142         case OP_IXOR:
13143                 return OP_X86_XOR_REG_MEMBASE;
13144         }
13145 #endif
13146
13147 #ifdef TARGET_AMD64
13148         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13149                 switch (opcode) {
13150                 case OP_ICOMPARE:
13151                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13152                 case OP_IADD:
13153                         return OP_X86_ADD_REG_MEMBASE;
13154                 case OP_ISUB:
13155                         return OP_X86_SUB_REG_MEMBASE;
13156                 case OP_IAND:
13157                         return OP_X86_AND_REG_MEMBASE;
13158                 case OP_IOR:
13159                         return OP_X86_OR_REG_MEMBASE;
13160                 case OP_IXOR:
13161                         return OP_X86_XOR_REG_MEMBASE;
13162                 }
13163         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13164                 switch (opcode) {
13165                 case OP_COMPARE:
13166                 case OP_LCOMPARE:
13167                         return OP_AMD64_COMPARE_REG_MEMBASE;
13168                 case OP_LADD:
13169                         return OP_AMD64_ADD_REG_MEMBASE;
13170                 case OP_LSUB:
13171                         return OP_AMD64_SUB_REG_MEMBASE;
13172                 case OP_LAND:
13173                         return OP_AMD64_AND_REG_MEMBASE;
13174                 case OP_LOR:
13175                         return OP_AMD64_OR_REG_MEMBASE;
13176                 case OP_LXOR:
13177                         return OP_AMD64_XOR_REG_MEMBASE;
13178                 }
13179         }
13180 #endif
13181
13182         return -1;
13183 }
13184
13185 int
13186 mono_op_to_op_imm_noemul (int opcode)
13187 {
13188         switch (opcode) {
13189 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13190         case OP_LSHR:
13191         case OP_LSHL:
13192         case OP_LSHR_UN:
13193                 return -1;
13194 #endif
13195 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13196         case OP_IDIV:
13197         case OP_IDIV_UN:
13198         case OP_IREM:
13199         case OP_IREM_UN:
13200                 return -1;
13201 #endif
13202 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13203         case OP_IMUL:
13204                 return -1;
13205 #endif
13206         default:
13207                 return mono_op_to_op_imm (opcode);
13208         }
13209 }
13210
13211 /**
13212  * mono_handle_global_vregs:
13213  *
13214  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13215  * for them.
13216  */
13217 void
13218 mono_handle_global_vregs (MonoCompile *cfg)
13219 {
13220         gint32 *vreg_to_bb;
13221         MonoBasicBlock *bb;
13222         int i, pos;
13223
13224         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13225
13226 #ifdef MONO_ARCH_SIMD_INTRINSICS
13227         if (cfg->uses_simd_intrinsics)
13228                 mono_simd_simplify_indirection (cfg);
13229 #endif
13230
13231         /* Find local vregs used in more than one bb */
13232         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13233                 MonoInst *ins = bb->code;
13234                 int block_num = bb->block_num;
13235
13236                 if (cfg->verbose_level > 2)
13237                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13238
13239                 cfg->cbb = bb;
13240                 for (; ins; ins = ins->next) {
13241                         const char *spec = INS_INFO (ins->opcode);
13242                         int regtype = 0, regindex;
13243                         gint32 prev_bb;
13244
13245                         if (G_UNLIKELY (cfg->verbose_level > 2))
13246                                 mono_print_ins (ins);
13247
13248                         g_assert (ins->opcode >= MONO_CEE_LAST);
13249
13250                         for (regindex = 0; regindex < 4; regindex ++) {
13251                                 int vreg = 0;
13252
13253                                 if (regindex == 0) {
13254                                         regtype = spec [MONO_INST_DEST];
13255                                         if (regtype == ' ')
13256                                                 continue;
13257                                         vreg = ins->dreg;
13258                                 } else if (regindex == 1) {
13259                                         regtype = spec [MONO_INST_SRC1];
13260                                         if (regtype == ' ')
13261                                                 continue;
13262                                         vreg = ins->sreg1;
13263                                 } else if (regindex == 2) {
13264                                         regtype = spec [MONO_INST_SRC2];
13265                                         if (regtype == ' ')
13266                                                 continue;
13267                                         vreg = ins->sreg2;
13268                                 } else if (regindex == 3) {
13269                                         regtype = spec [MONO_INST_SRC3];
13270                                         if (regtype == ' ')
13271                                                 continue;
13272                                         vreg = ins->sreg3;
13273                                 }
13274
13275 #if SIZEOF_REGISTER == 4
13276                                 /* In the LLVM case, the long opcodes are not decomposed */
13277                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13278                                         /*
13279                                          * Since some instructions reference the original long vreg,
13280                                          * and some reference the two component vregs, it is quite hard
13281                                          * to determine when it needs to be global. So be conservative.
13282                                          */
13283                                         if (!get_vreg_to_inst (cfg, vreg)) {
13284                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13285
13286                                                 if (cfg->verbose_level > 2)
13287                                                         printf ("LONG VREG R%d made global.\n", vreg);
13288                                         }
13289
13290                                         /*
13291                                          * Make the component vregs volatile since the optimizations can
13292                                          * get confused otherwise.
13293                                          */
13294                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13295                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13296                                 }
13297 #endif
13298
13299                                 g_assert (vreg != -1);
13300
13301                                 prev_bb = vreg_to_bb [vreg];
13302                                 if (prev_bb == 0) {
13303                                         /* 0 is a valid block num */
13304                                         vreg_to_bb [vreg] = block_num + 1;
13305                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13306                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13307                                                 continue;
13308
13309                                         if (!get_vreg_to_inst (cfg, vreg)) {
13310                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13311                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13312
13313                                                 switch (regtype) {
13314                                                 case 'i':
13315                                                         if (vreg_is_ref (cfg, vreg))
13316                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13317                                                         else
13318                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13319                                                         break;
13320                                                 case 'l':
13321                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13322                                                         break;
13323                                                 case 'f':
13324                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13325                                                         break;
13326                                                 case 'v':
13327                                                 case 'x':
13328                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13329                                                         break;
13330                                                 default:
13331                                                         g_assert_not_reached ();
13332                                                 }
13333                                         }
13334
13335                                         /* Flag as having been used in more than one bb */
13336                                         vreg_to_bb [vreg] = -1;
13337                                 }
13338                         }
13339                 }
13340         }
13341
13342         /* If a variable is used in only one bblock, convert it into a local vreg */
13343         for (i = 0; i < cfg->num_varinfo; i++) {
13344                 MonoInst *var = cfg->varinfo [i];
13345                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13346
13347                 switch (var->type) {
13348                 case STACK_I4:
13349                 case STACK_OBJ:
13350                 case STACK_PTR:
13351                 case STACK_MP:
13352                 case STACK_VTYPE:
13353 #if SIZEOF_REGISTER == 8
13354                 case STACK_I8:
13355 #endif
13356 #if !defined(TARGET_X86)
13357                 /* Enabling this screws up the fp stack on x86 */
13358                 case STACK_R8:
13359 #endif
13360                         if (mono_arch_is_soft_float ())
13361                                 break;
13362
13363                         /*
13364                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13365                                 break;
13366                         */
13367
13368                         /* Arguments are implicitly global */
13369                         /* Putting R4 vars into registers doesn't work currently */
13370                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13371                         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) {
13372                                 /*
13373                                  * Make that the variable's liveness interval doesn't contain a call, since
13374                                  * that would cause the lvreg to be spilled, making the whole optimization
13375                                  * useless.
13376                                  */
13377                                 /* This is too slow for JIT compilation */
13378 #if 0
13379                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13380                                         MonoInst *ins;
13381                                         int def_index, call_index, ins_index;
13382                                         gboolean spilled = FALSE;
13383
13384                                         def_index = -1;
13385                                         call_index = -1;
13386                                         ins_index = 0;
13387                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13388                                                 const char *spec = INS_INFO (ins->opcode);
13389
13390                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13391                                                         def_index = ins_index;
13392
13393                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13394                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13395                                                         if (call_index > def_index) {
13396                                                                 spilled = TRUE;
13397                                                                 break;
13398                                                         }
13399                                                 }
13400
13401                                                 if (MONO_IS_CALL (ins))
13402                                                         call_index = ins_index;
13403
13404                                                 ins_index ++;
13405                                         }
13406
13407                                         if (spilled)
13408                                                 break;
13409                                 }
13410 #endif
13411
13412                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13413                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13414                                 var->flags |= MONO_INST_IS_DEAD;
13415                                 cfg->vreg_to_inst [var->dreg] = NULL;
13416                         }
13417                         break;
13418                 }
13419         }
13420
13421         /*
13422          * Compress the varinfo and vars tables so the liveness computation is faster and
13423          * takes up less space.
13424          */
13425         pos = 0;
13426         for (i = 0; i < cfg->num_varinfo; ++i) {
13427                 MonoInst *var = cfg->varinfo [i];
13428                 if (pos < i && cfg->locals_start == i)
13429                         cfg->locals_start = pos;
13430                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13431                         if (pos < i) {
13432                                 cfg->varinfo [pos] = cfg->varinfo [i];
13433                                 cfg->varinfo [pos]->inst_c0 = pos;
13434                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13435                                 cfg->vars [pos].idx = pos;
13436 #if SIZEOF_REGISTER == 4
13437                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13438                                         /* Modify the two component vars too */
13439                                         MonoInst *var1;
13440
13441                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13442                                         var1->inst_c0 = pos;
13443                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13444                                         var1->inst_c0 = pos;
13445                                 }
13446 #endif
13447                         }
13448                         pos ++;
13449                 }
13450         }
13451         cfg->num_varinfo = pos;
13452         if (cfg->locals_start > cfg->num_varinfo)
13453                 cfg->locals_start = cfg->num_varinfo;
13454 }
13455
13456 /*
13457  * mono_allocate_gsharedvt_vars:
13458  *
13459  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13460  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13461  */
13462 void
13463 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13464 {
13465         int i;
13466
13467         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13468
13469         for (i = 0; i < cfg->num_varinfo; ++i) {
13470                 MonoInst *ins = cfg->varinfo [i];
13471                 int idx;
13472
13473                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13474                         if (i >= cfg->locals_start) {
13475                                 /* Local */
13476                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13477                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13478                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13479                                 ins->inst_imm = idx;
13480                         } else {
13481                                 /* Arg */
13482                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13483                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13484                         }
13485                 }
13486         }
13487 }
13488
13489 /**
13490  * mono_spill_global_vars:
13491  *
13492  *   Generate spill code for variables which are not allocated to registers,
13493  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13494  * code is generated which could be optimized by the local optimization passes.
13495  */
13496 void
13497 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13498 {
13499         MonoBasicBlock *bb;
13500         char spec2 [16];
13501         int orig_next_vreg;
13502         guint32 *vreg_to_lvreg;
13503         guint32 *lvregs;
13504         guint32 i, lvregs_len, lvregs_size;
13505         gboolean dest_has_lvreg = FALSE;
13506         MonoStackType stacktypes [128];
13507         MonoInst **live_range_start, **live_range_end;
13508         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13509
13510         *need_local_opts = FALSE;
13511
13512         memset (spec2, 0, sizeof (spec2));
13513
13514         /* FIXME: Move this function to mini.c */
13515         stacktypes ['i'] = STACK_PTR;
13516         stacktypes ['l'] = STACK_I8;
13517         stacktypes ['f'] = STACK_R8;
13518 #ifdef MONO_ARCH_SIMD_INTRINSICS
13519         stacktypes ['x'] = STACK_VTYPE;
13520 #endif
13521
13522 #if SIZEOF_REGISTER == 4
13523         /* Create MonoInsts for longs */
13524         for (i = 0; i < cfg->num_varinfo; i++) {
13525                 MonoInst *ins = cfg->varinfo [i];
13526
13527                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13528                         switch (ins->type) {
13529                         case STACK_R8:
13530                         case STACK_I8: {
13531                                 MonoInst *tree;
13532
13533                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13534                                         break;
13535
13536                                 g_assert (ins->opcode == OP_REGOFFSET);
13537
13538                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13539                                 g_assert (tree);
13540                                 tree->opcode = OP_REGOFFSET;
13541                                 tree->inst_basereg = ins->inst_basereg;
13542                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13543
13544                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13545                                 g_assert (tree);
13546                                 tree->opcode = OP_REGOFFSET;
13547                                 tree->inst_basereg = ins->inst_basereg;
13548                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13549                                 break;
13550                         }
13551                         default:
13552                                 break;
13553                         }
13554                 }
13555         }
13556 #endif
13557
13558         if (cfg->compute_gc_maps) {
13559                 /* registers need liveness info even for !non refs */
13560                 for (i = 0; i < cfg->num_varinfo; i++) {
13561                         MonoInst *ins = cfg->varinfo [i];
13562
13563                         if (ins->opcode == OP_REGVAR)
13564                                 ins->flags |= MONO_INST_GC_TRACK;
13565                 }
13566         }
13567
13568         /* FIXME: widening and truncation */
13569
13570         /*
13571          * As an optimization, when a variable allocated to the stack is first loaded into
13572          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13573          * the variable again.
13574          */
13575         orig_next_vreg = cfg->next_vreg;
13576         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13577         lvregs_size = 1024;
13578         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13579         lvregs_len = 0;
13580
13581         /*
13582          * These arrays contain the first and last instructions accessing a given
13583          * variable.
13584          * Since we emit bblocks in the same order we process them here, and we
13585          * don't split live ranges, these will precisely describe the live range of
13586          * the variable, i.e. the instruction range where a valid value can be found
13587          * in the variables location.
13588          * The live range is computed using the liveness info computed by the liveness pass.
13589          * We can't use vmv->range, since that is an abstract live range, and we need
13590          * one which is instruction precise.
13591          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13592          */
13593         /* FIXME: Only do this if debugging info is requested */
13594         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13595         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13596         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13597         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13598
13599         /* Add spill loads/stores */
13600         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13601                 MonoInst *ins;
13602
13603                 if (cfg->verbose_level > 2)
13604                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13605
13606                 /* Clear vreg_to_lvreg array */
13607                 for (i = 0; i < lvregs_len; i++)
13608                         vreg_to_lvreg [lvregs [i]] = 0;
13609                 lvregs_len = 0;
13610
13611                 cfg->cbb = bb;
13612                 MONO_BB_FOR_EACH_INS (bb, ins) {
13613                         const char *spec = INS_INFO (ins->opcode);
13614                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13615                         gboolean store, no_lvreg;
13616                         int sregs [MONO_MAX_SRC_REGS];
13617
13618                         if (G_UNLIKELY (cfg->verbose_level > 2))
13619                                 mono_print_ins (ins);
13620
13621                         if (ins->opcode == OP_NOP)
13622                                 continue;
13623
13624                         /*
13625                          * We handle LDADDR here as well, since it can only be decomposed
13626                          * when variable addresses are known.
13627                          */
13628                         if (ins->opcode == OP_LDADDR) {
13629                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13630
13631                                 if (var->opcode == OP_VTARG_ADDR) {
13632                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13633                                         MonoInst *vtaddr = var->inst_left;
13634                                         if (vtaddr->opcode == OP_REGVAR) {
13635                                                 ins->opcode = OP_MOVE;
13636                                                 ins->sreg1 = vtaddr->dreg;
13637                                         }
13638                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13639                                                 ins->opcode = OP_LOAD_MEMBASE;
13640                                                 ins->inst_basereg = vtaddr->inst_basereg;
13641                                                 ins->inst_offset = vtaddr->inst_offset;
13642                                         } else
13643                                                 NOT_IMPLEMENTED;
13644                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13645                                         /* gsharedvt arg passed by ref */
13646                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13647
13648                                         ins->opcode = OP_LOAD_MEMBASE;
13649                                         ins->inst_basereg = var->inst_basereg;
13650                                         ins->inst_offset = var->inst_offset;
13651                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13652                                         MonoInst *load, *load2, *load3;
13653                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13654                                         int reg1, reg2, reg3;
13655                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13656                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13657
13658                                         /*
13659                                          * gsharedvt local.
13660                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13661                                          */
13662
13663                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13664
13665                                         g_assert (info_var);
13666                                         g_assert (locals_var);
13667
13668                                         /* Mark the instruction used to compute the locals var as used */
13669                                         cfg->gsharedvt_locals_var_ins = NULL;
13670
13671                                         /* Load the offset */
13672                                         if (info_var->opcode == OP_REGOFFSET) {
13673                                                 reg1 = alloc_ireg (cfg);
13674                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13675                                         } else if (info_var->opcode == OP_REGVAR) {
13676                                                 load = NULL;
13677                                                 reg1 = info_var->dreg;
13678                                         } else {
13679                                                 g_assert_not_reached ();
13680                                         }
13681                                         reg2 = alloc_ireg (cfg);
13682                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13683                                         /* Load the locals area address */
13684                                         reg3 = alloc_ireg (cfg);
13685                                         if (locals_var->opcode == OP_REGOFFSET) {
13686                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13687                                         } else if (locals_var->opcode == OP_REGVAR) {
13688                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13689                                         } else {
13690                                                 g_assert_not_reached ();
13691                                         }
13692                                         /* Compute the address */
13693                                         ins->opcode = OP_PADD;
13694                                         ins->sreg1 = reg3;
13695                                         ins->sreg2 = reg2;
13696
13697                                         mono_bblock_insert_before_ins (bb, ins, load3);
13698                                         mono_bblock_insert_before_ins (bb, load3, load2);
13699                                         if (load)
13700                                                 mono_bblock_insert_before_ins (bb, load2, load);
13701                                 } else {
13702                                         g_assert (var->opcode == OP_REGOFFSET);
13703
13704                                         ins->opcode = OP_ADD_IMM;
13705                                         ins->sreg1 = var->inst_basereg;
13706                                         ins->inst_imm = var->inst_offset;
13707                                 }
13708
13709                                 *need_local_opts = TRUE;
13710                                 spec = INS_INFO (ins->opcode);
13711                         }
13712
13713                         if (ins->opcode < MONO_CEE_LAST) {
13714                                 mono_print_ins (ins);
13715                                 g_assert_not_reached ();
13716                         }
13717
13718                         /*
13719                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13720                          * src register.
13721                          * FIXME:
13722                          */
13723                         if (MONO_IS_STORE_MEMBASE (ins)) {
13724                                 tmp_reg = ins->dreg;
13725                                 ins->dreg = ins->sreg2;
13726                                 ins->sreg2 = tmp_reg;
13727                                 store = TRUE;
13728
13729                                 spec2 [MONO_INST_DEST] = ' ';
13730                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13731                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13732                                 spec2 [MONO_INST_SRC3] = ' ';
13733                                 spec = spec2;
13734                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13735                                 g_assert_not_reached ();
13736                         else
13737                                 store = FALSE;
13738                         no_lvreg = FALSE;
13739
13740                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13741                                 printf ("\t %.3s %d", spec, ins->dreg);
13742                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13743                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13744                                         printf (" %d", sregs [srcindex]);
13745                                 printf ("\n");
13746                         }
13747
13748                         /***************/
13749                         /*    DREG     */
13750                         /***************/
13751                         regtype = spec [MONO_INST_DEST];
13752                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13753                         prev_dreg = -1;
13754
13755                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13756                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13757                                 MonoInst *store_ins;
13758                                 int store_opcode;
13759                                 MonoInst *def_ins = ins;
13760                                 int dreg = ins->dreg; /* The original vreg */
13761
13762                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13763
13764                                 if (var->opcode == OP_REGVAR) {
13765                                         ins->dreg = var->dreg;
13766                                 } 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)) {
13767                                         /*
13768                                          * Instead of emitting a load+store, use a _membase opcode.
13769                                          */
13770                                         g_assert (var->opcode == OP_REGOFFSET);
13771                                         if (ins->opcode == OP_MOVE) {
13772                                                 NULLIFY_INS (ins);
13773                                                 def_ins = NULL;
13774                                         } else {
13775                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13776                                                 ins->inst_basereg = var->inst_basereg;
13777                                                 ins->inst_offset = var->inst_offset;
13778                                                 ins->dreg = -1;
13779                                         }
13780                                         spec = INS_INFO (ins->opcode);
13781                                 } else {
13782                                         guint32 lvreg;
13783
13784                                         g_assert (var->opcode == OP_REGOFFSET);
13785
13786                                         prev_dreg = ins->dreg;
13787
13788                                         /* Invalidate any previous lvreg for this vreg */
13789                                         vreg_to_lvreg [ins->dreg] = 0;
13790
13791                                         lvreg = 0;
13792
13793                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13794                                                 regtype = 'l';
13795                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13796                                         }
13797
13798                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13799
13800 #if SIZEOF_REGISTER != 8
13801                                         if (regtype == 'l') {
13802                                                 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));
13803                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13804                                                 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));
13805                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13806                                                 def_ins = store_ins;
13807                                         }
13808                                         else
13809 #endif
13810                                         {
13811                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13812
13813                                                 /* Try to fuse the store into the instruction itself */
13814                                                 /* FIXME: Add more instructions */
13815                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13816                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13817                                                         ins->inst_imm = ins->inst_c0;
13818                                                         ins->inst_destbasereg = var->inst_basereg;
13819                                                         ins->inst_offset = var->inst_offset;
13820                                                         spec = INS_INFO (ins->opcode);
13821                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13822                                                         ins->opcode = store_opcode;
13823                                                         ins->inst_destbasereg = var->inst_basereg;
13824                                                         ins->inst_offset = var->inst_offset;
13825
13826                                                         no_lvreg = TRUE;
13827
13828                                                         tmp_reg = ins->dreg;
13829                                                         ins->dreg = ins->sreg2;
13830                                                         ins->sreg2 = tmp_reg;
13831                                                         store = TRUE;
13832
13833                                                         spec2 [MONO_INST_DEST] = ' ';
13834                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13835                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13836                                                         spec2 [MONO_INST_SRC3] = ' ';
13837                                                         spec = spec2;
13838                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13839                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13840                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13841                                                         ins->dreg = -1;
13842                                                         ins->inst_basereg = var->inst_basereg;
13843                                                         ins->inst_offset = var->inst_offset;
13844                                                         spec = INS_INFO (ins->opcode);
13845                                                 } else {
13846                                                         /* printf ("INS: "); mono_print_ins (ins); */
13847                                                         /* Create a store instruction */
13848                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13849
13850                                                         /* Insert it after the instruction */
13851                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13852
13853                                                         def_ins = store_ins;
13854
13855                                                         /*
13856                                                          * We can't assign ins->dreg to var->dreg here, since the
13857                                                          * sregs could use it. So set a flag, and do it after
13858                                                          * the sregs.
13859                                                          */
13860                                                         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)))
13861                                                                 dest_has_lvreg = TRUE;
13862                                                 }
13863                                         }
13864                                 }
13865
13866                                 if (def_ins && !live_range_start [dreg]) {
13867                                         live_range_start [dreg] = def_ins;
13868                                         live_range_start_bb [dreg] = bb;
13869                                 }
13870
13871                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13872                                         MonoInst *tmp;
13873
13874                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13875                                         tmp->inst_c1 = dreg;
13876                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13877                                 }
13878                         }
13879
13880                         /************/
13881                         /*  SREGS   */
13882                         /************/
13883                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13884                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13885                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13886                                 sreg = sregs [srcindex];
13887
13888                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13889                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13890                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13891                                         MonoInst *use_ins = ins;
13892                                         MonoInst *load_ins;
13893                                         guint32 load_opcode;
13894
13895                                         if (var->opcode == OP_REGVAR) {
13896                                                 sregs [srcindex] = var->dreg;
13897                                                 //mono_inst_set_src_registers (ins, sregs);
13898                                                 live_range_end [sreg] = use_ins;
13899                                                 live_range_end_bb [sreg] = bb;
13900
13901                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13902                                                         MonoInst *tmp;
13903
13904                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13905                                                         /* var->dreg is a hreg */
13906                                                         tmp->inst_c1 = sreg;
13907                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13908                                                 }
13909
13910                                                 continue;
13911                                         }
13912
13913                                         g_assert (var->opcode == OP_REGOFFSET);
13914
13915                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13916
13917                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13918
13919                                         if (vreg_to_lvreg [sreg]) {
13920                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13921
13922                                                 /* The variable is already loaded to an lvreg */
13923                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13924                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13925                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13926                                                 //mono_inst_set_src_registers (ins, sregs);
13927                                                 continue;
13928                                         }
13929
13930                                         /* Try to fuse the load into the instruction */
13931                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13932                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13933                                                 sregs [0] = var->inst_basereg;
13934                                                 //mono_inst_set_src_registers (ins, sregs);
13935                                                 ins->inst_offset = var->inst_offset;
13936                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13937                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13938                                                 sregs [1] = var->inst_basereg;
13939                                                 //mono_inst_set_src_registers (ins, sregs);
13940                                                 ins->inst_offset = var->inst_offset;
13941                                         } else {
13942                                                 if (MONO_IS_REAL_MOVE (ins)) {
13943                                                         ins->opcode = OP_NOP;
13944                                                         sreg = ins->dreg;
13945                                                 } else {
13946                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13947
13948                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13949
13950                                                         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) {
13951                                                                 if (var->dreg == prev_dreg) {
13952                                                                         /*
13953                                                                          * sreg refers to the value loaded by the load
13954                                                                          * emitted below, but we need to use ins->dreg
13955                                                                          * since it refers to the store emitted earlier.
13956                                                                          */
13957                                                                         sreg = ins->dreg;
13958                                                                 }
13959                                                                 g_assert (sreg != -1);
13960                                                                 vreg_to_lvreg [var->dreg] = sreg;
13961                                                                 if (lvregs_len >= lvregs_size) {
13962                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13963                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13964                                                                         lvregs = new_lvregs;
13965                                                                         lvregs_size *= 2;
13966                                                                 }
13967                                                                 lvregs [lvregs_len ++] = var->dreg;
13968                                                         }
13969                                                 }
13970
13971                                                 sregs [srcindex] = sreg;
13972                                                 //mono_inst_set_src_registers (ins, sregs);
13973
13974 #if SIZEOF_REGISTER != 8
13975                                                 if (regtype == 'l') {
13976                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13977                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13978                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13979                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13980                                                         use_ins = load_ins;
13981                                                 }
13982                                                 else
13983 #endif
13984                                                 {
13985 #if SIZEOF_REGISTER == 4
13986                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13987 #endif
13988                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13989                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13990                                                         use_ins = load_ins;
13991                                                 }
13992                                         }
13993
13994                                         if (var->dreg < orig_next_vreg) {
13995                                                 live_range_end [var->dreg] = use_ins;
13996                                                 live_range_end_bb [var->dreg] = bb;
13997                                         }
13998
13999                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14000                                                 MonoInst *tmp;
14001
14002                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14003                                                 tmp->inst_c1 = var->dreg;
14004                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14005                                         }
14006                                 }
14007                         }
14008                         mono_inst_set_src_registers (ins, sregs);
14009
14010                         if (dest_has_lvreg) {
14011                                 g_assert (ins->dreg != -1);
14012                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14013                                 if (lvregs_len >= lvregs_size) {
14014                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14015                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14016                                         lvregs = new_lvregs;
14017                                         lvregs_size *= 2;
14018                                 }
14019                                 lvregs [lvregs_len ++] = prev_dreg;
14020                                 dest_has_lvreg = FALSE;
14021                         }
14022
14023                         if (store) {
14024                                 tmp_reg = ins->dreg;
14025                                 ins->dreg = ins->sreg2;
14026                                 ins->sreg2 = tmp_reg;
14027                         }
14028
14029                         if (MONO_IS_CALL (ins)) {
14030                                 /* Clear vreg_to_lvreg array */
14031                                 for (i = 0; i < lvregs_len; i++)
14032                                         vreg_to_lvreg [lvregs [i]] = 0;
14033                                 lvregs_len = 0;
14034                         } else if (ins->opcode == OP_NOP) {
14035                                 ins->dreg = -1;
14036                                 MONO_INST_NULLIFY_SREGS (ins);
14037                         }
14038
14039                         if (cfg->verbose_level > 2)
14040                                 mono_print_ins_index (1, ins);
14041                 }
14042
14043                 /* Extend the live range based on the liveness info */
14044                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14045                         for (i = 0; i < cfg->num_varinfo; i ++) {
14046                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14047
14048                                 if (vreg_is_volatile (cfg, vi->vreg))
14049                                         /* The liveness info is incomplete */
14050                                         continue;
14051
14052                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14053                                         /* Live from at least the first ins of this bb */
14054                                         live_range_start [vi->vreg] = bb->code;
14055                                         live_range_start_bb [vi->vreg] = bb;
14056                                 }
14057
14058                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14059                                         /* Live at least until the last ins of this bb */
14060                                         live_range_end [vi->vreg] = bb->last_ins;
14061                                         live_range_end_bb [vi->vreg] = bb;
14062                                 }
14063                         }
14064                 }
14065         }
14066
14067         /*
14068          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14069          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14070          */
14071         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14072                 for (i = 0; i < cfg->num_varinfo; ++i) {
14073                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14074                         MonoInst *ins;
14075
14076                         if (live_range_start [vreg]) {
14077                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14078                                 ins->inst_c0 = i;
14079                                 ins->inst_c1 = vreg;
14080                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14081                         }
14082                         if (live_range_end [vreg]) {
14083                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14084                                 ins->inst_c0 = i;
14085                                 ins->inst_c1 = vreg;
14086                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14087                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14088                                 else
14089                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14090                         }
14091                 }
14092         }
14093
14094         if (cfg->gsharedvt_locals_var_ins) {
14095                 /* Nullify if unused */
14096                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14097                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14098         }
14099
14100         g_free (live_range_start);
14101         g_free (live_range_end);
14102         g_free (live_range_start_bb);
14103         g_free (live_range_end_bb);
14104 }
14105
14106
14107 /**
14108  * FIXME:
14109  * - use 'iadd' instead of 'int_add'
14110  * - handling ovf opcodes: decompose in method_to_ir.
14111  * - unify iregs/fregs
14112  *   -> partly done, the missing parts are:
14113  *   - a more complete unification would involve unifying the hregs as well, so
14114  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14115  *     would no longer map to the machine hregs, so the code generators would need to
14116  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14117  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14118  *     fp/non-fp branches speeds it up by about 15%.
14119  * - use sext/zext opcodes instead of shifts
14120  * - add OP_ICALL
14121  * - get rid of TEMPLOADs if possible and use vregs instead
14122  * - clean up usage of OP_P/OP_ opcodes
14123  * - cleanup usage of DUMMY_USE
14124  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14125  *   stack
14126  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14127  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14128  * - make sure handle_stack_args () is called before the branch is emitted
14129  * - when the new IR is done, get rid of all unused stuff
14130  * - COMPARE/BEQ as separate instructions or unify them ?
14131  *   - keeping them separate allows specialized compare instructions like
14132  *     compare_imm, compare_membase
14133  *   - most back ends unify fp compare+branch, fp compare+ceq
14134  * - integrate mono_save_args into inline_method
14135  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14136  * - handle long shift opts on 32 bit platforms somehow: they require
14137  *   3 sregs (2 for arg1 and 1 for arg2)
14138  * - make byref a 'normal' type.
14139  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14140  *   variable if needed.
14141  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14142  *   like inline_method.
14143  * - remove inlining restrictions
14144  * - fix LNEG and enable cfold of INEG
14145  * - generalize x86 optimizations like ldelema as a peephole optimization
14146  * - add store_mem_imm for amd64
14147  * - optimize the loading of the interruption flag in the managed->native wrappers
14148  * - avoid special handling of OP_NOP in passes
14149  * - move code inserting instructions into one function/macro.
14150  * - try a coalescing phase after liveness analysis
14151  * - add float -> vreg conversion + local optimizations on !x86
14152  * - figure out how to handle decomposed branches during optimizations, ie.
14153  *   compare+branch, op_jump_table+op_br etc.
14154  * - promote RuntimeXHandles to vregs
14155  * - vtype cleanups:
14156  *   - add a NEW_VARLOADA_VREG macro
14157  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14158  *   accessing vtype fields.
14159  * - get rid of I8CONST on 64 bit platforms
14160  * - dealing with the increase in code size due to branches created during opcode
14161  *   decomposition:
14162  *   - use extended basic blocks
14163  *     - all parts of the JIT
14164  *     - handle_global_vregs () && local regalloc
14165  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14166  * - sources of increase in code size:
14167  *   - vtypes
14168  *   - long compares
14169  *   - isinst and castclass
14170  *   - lvregs not allocated to global registers even if used multiple times
14171  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14172  *   meaningful.
14173  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14174  * - add all micro optimizations from the old JIT
14175  * - put tree optimizations into the deadce pass
14176  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14177  *   specific function.
14178  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14179  *   fcompare + branchCC.
14180  * - create a helper function for allocating a stack slot, taking into account
14181  *   MONO_CFG_HAS_SPILLUP.
14182  * - merge r68207.
14183  * - optimize mono_regstate2_alloc_int/float.
14184  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14185  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14186  *   parts of the tree could be separated by other instructions, killing the tree
14187  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14188  *   instructions if the result of the load is used multiple times ?
14189  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14190  * - LAST MERGE: 108395.
14191  * - when returning vtypes in registers, generate IR and append it to the end of the
14192  *   last bb instead of doing it in the epilog.
14193  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14194  */
14195
14196 /*
14197
14198 NOTES
14199 -----
14200
14201 - When to decompose opcodes:
14202   - earlier: this makes some optimizations hard to implement, since the low level IR
14203   no longer contains the neccessary information. But it is easier to do.
14204   - later: harder to implement, enables more optimizations.
14205 - Branches inside bblocks:
14206   - created when decomposing complex opcodes.
14207     - branches to another bblock: harmless, but not tracked by the branch
14208       optimizations, so need to branch to a label at the start of the bblock.
14209     - branches to inside the same bblock: very problematic, trips up the local
14210       reg allocator. Can be fixed by spitting the current bblock, but that is a
14211       complex operation, since some local vregs can become global vregs etc.
14212 - Local/global vregs:
14213   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14214     local register allocator.
14215   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14216     structure, created by mono_create_var (). Assigned to hregs or the stack by
14217     the global register allocator.
14218 - When to do optimizations like alu->alu_imm:
14219   - earlier -> saves work later on since the IR will be smaller/simpler
14220   - later -> can work on more instructions
14221 - Handling of valuetypes:
14222   - When a vtype is pushed on the stack, a new temporary is created, an
14223     instruction computing its address (LDADDR) is emitted and pushed on
14224     the stack. Need to optimize cases when the vtype is used immediately as in
14225     argument passing, stloc etc.
14226 - Instead of the to_end stuff in the old JIT, simply call the function handling
14227   the values on the stack before emitting the last instruction of the bb.
14228 */
14229
14230 #endif /* !DISABLE_JIT */