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)
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)
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 (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
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_method_leave);
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 static void
2831 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
2832 {
2833         MonoClassField *field;
2834         gpointer iter = NULL;
2835
2836         while ((field = mono_class_get_fields (klass, &iter))) {
2837                 int foffset;
2838
2839                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
2840                         continue;
2841                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
2842                 if (mini_type_is_reference (mono_field_get_type (field))) {
2843                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
2844                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
2845                 } else {
2846                         MonoClass *field_class = mono_class_from_mono_type (field->type);
2847                         if (field_class->has_references)
2848                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
2849                 }
2850         }
2851 }
2852
2853 void
2854 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2855 {
2856         int card_table_shift_bits;
2857         gpointer card_table_mask;
2858         guint8 *card_table;
2859         MonoInst *dummy_use;
2860         int nursery_shift_bits;
2861         size_t nursery_size;
2862
2863         if (!cfg->gen_write_barriers)
2864                 return;
2865
2866         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2867
2868         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2869
2870         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2871
2872         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2873                 MonoInst *wbarrier;
2874
2875                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2876                 wbarrier->sreg1 = ptr->dreg;
2877                 wbarrier->sreg2 = value->dreg;
2878                 MONO_ADD_INS (cfg->cbb, wbarrier);
2879         } else if (card_table) {
2880                 int offset_reg = alloc_preg (cfg);
2881                 int card_reg;
2882                 MonoInst *ins;
2883
2884                 /*
2885                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2886                  * collector case, so, for the serial collector, it might slightly slow down nursery
2887                  * collections. We also expect that the host system and the target system have the same card
2888                  * table configuration, which is the case if they have the same pointer size.
2889                  */
2890
2891                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2892                 if (card_table_mask)
2893                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2894
2895                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2896                  * IMM's larger than 32bits.
2897                  */
2898                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2899                 card_reg = ins->dreg;
2900
2901                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2902                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2903         } else {
2904                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2905                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2906         }
2907
2908         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2909 }
2910
2911 gboolean
2912 mini_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
2913 {
2914         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
2915         unsigned need_wb = 0;
2916
2917         if (align == 0)
2918                 align = 4;
2919
2920         /*types with references can't have alignment smaller than sizeof(void*) */
2921         if (align < SIZEOF_VOID_P)
2922                 return FALSE;
2923
2924         if (size > 5 * SIZEOF_VOID_P)
2925                 return FALSE;
2926
2927         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
2928
2929         destreg = iargs [0]->dreg;
2930         srcreg = iargs [1]->dreg;
2931         offset = 0;
2932
2933         dest_ptr_reg = alloc_preg (cfg);
2934         tmp_reg = alloc_preg (cfg);
2935
2936         /*tmp = dreg*/
2937         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
2938
2939         while (size >= SIZEOF_VOID_P) {
2940                 MonoInst *load_inst;
2941                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
2942                 load_inst->dreg = tmp_reg;
2943                 load_inst->inst_basereg = srcreg;
2944                 load_inst->inst_offset = offset;
2945                 MONO_ADD_INS (cfg->cbb, load_inst);
2946
2947                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
2948
2949                 if (need_wb & 0x1)
2950                         mini_emit_write_barrier (cfg, iargs [0], load_inst);
2951
2952                 offset += SIZEOF_VOID_P;
2953                 size -= SIZEOF_VOID_P;
2954                 need_wb >>= 1;
2955
2956                 /*tmp += sizeof (void*)*/
2957                 if (size >= SIZEOF_VOID_P) {
2958                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
2959                         MONO_ADD_INS (cfg->cbb, iargs [0]);
2960                 }
2961         }
2962
2963         /* Those cannot be references since size < sizeof (void*) */
2964         while (size >= 4) {
2965                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
2966                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
2967                 offset += 4;
2968                 size -= 4;
2969         }
2970
2971         while (size >= 2) {
2972                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
2973                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
2974                 offset += 2;
2975                 size -= 2;
2976         }
2977
2978         while (size >= 1) {
2979                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
2980                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
2981                 offset += 1;
2982                 size -= 1;
2983         }
2984
2985         return TRUE;
2986 }
2987
2988 /*
2989  * Emit code to copy a valuetype of type @klass whose address is stored in
2990  * @src->dreg to memory whose address is stored at @dest->dreg.
2991  */
2992 void
2993 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2994 {
2995         MonoInst *iargs [4];
2996         int n;
2997         guint32 align = 0;
2998         MonoMethod *memcpy_method;
2999         MonoInst *size_ins = NULL;
3000         MonoInst *memcpy_ins = NULL;
3001
3002         g_assert (klass);
3003         if (cfg->gshared)
3004                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3005
3006         /*
3007          * This check breaks with spilled vars... need to handle it during verification anyway.
3008          * g_assert (klass && klass == src->klass && klass == dest->klass);
3009          */
3010
3011         if (mini_is_gsharedvt_klass (klass)) {
3012                 g_assert (!native);
3013                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3014                 memcpy_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3015         }
3016
3017         if (native)
3018                 n = mono_class_native_size (klass, &align);
3019         else
3020                 n = mono_class_value_size (klass, &align);
3021
3022         if (!align)
3023                 align = SIZEOF_VOID_P;
3024         /* if native is true there should be no references in the struct */
3025         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3026                 /* Avoid barriers when storing to the stack */
3027                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3028                           (dest->opcode == OP_LDADDR))) {
3029                         int context_used;
3030
3031                         iargs [0] = dest;
3032                         iargs [1] = src;
3033
3034                         context_used = mini_class_check_context_used (cfg, klass);
3035
3036                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3037                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mini_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3038                                 return;
3039                         } else if (size_ins || align < SIZEOF_VOID_P) {
3040                                 if (context_used) {
3041                                         iargs [2] = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3042                                 }  else {
3043                                         iargs [2] = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3044                                         if (!cfg->compile_aot)
3045                                                 mono_class_compute_gc_descriptor (klass);
3046                                 }
3047                                 if (size_ins)
3048                                         mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3049                                 else
3050                                         mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3051                         } else {
3052                                 /* We don't unroll more than 5 stores to avoid code bloat. */
3053                                 /*This is harmless and simplify mono_gc_get_range_copy_func */
3054                                 n += (SIZEOF_VOID_P - 1);
3055                                 n &= ~(SIZEOF_VOID_P - 1);
3056
3057                                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3058                                 mono_emit_jit_icall (cfg, mono_gc_get_range_copy_func (), iargs);
3059                         }
3060                 }
3061         }
3062
3063         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3064                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3065                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3066         } else {
3067                 iargs [0] = dest;
3068                 iargs [1] = src;
3069                 if (size_ins)
3070                         iargs [2] = size_ins;
3071                 else
3072                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3073
3074                 memcpy_method = mini_get_memcpy_method ();
3075                 if (memcpy_ins)
3076                         mini_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3077                 else
3078                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3079         }
3080 }
3081
3082 MonoMethod*
3083 mini_get_memset_method (void)
3084 {
3085         static MonoMethod *memset_method = NULL;
3086         if (!memset_method) {
3087                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3088                 if (!memset_method)
3089                         g_error ("Old corlib found. Install a new one");
3090         }
3091         return memset_method;
3092 }
3093
3094 void
3095 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3096 {
3097         MonoInst *iargs [3];
3098         int n;
3099         guint32 align;
3100         MonoMethod *memset_method;
3101         MonoInst *size_ins = NULL;
3102         MonoInst *bzero_ins = NULL;
3103         static MonoMethod *bzero_method;
3104
3105         /* FIXME: Optimize this for the case when dest is an LDADDR */
3106         mono_class_init (klass);
3107         if (mini_is_gsharedvt_klass (klass)) {
3108                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3109                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3110                 if (!bzero_method)
3111                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3112                 g_assert (bzero_method);
3113                 iargs [0] = dest;
3114                 iargs [1] = size_ins;
3115                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3116                 return;
3117         }
3118
3119         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3120
3121         n = mono_class_value_size (klass, &align);
3122
3123         if (n <= sizeof (gpointer) * 8) {
3124                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3125         }
3126         else {
3127                 memset_method = mini_get_memset_method ();
3128                 iargs [0] = dest;
3129                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3130                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3131                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3132         }
3133 }
3134
3135 /*
3136  * emit_get_rgctx:
3137  *
3138  *   Emit IR to return either the this pointer for instance method,
3139  * or the mrgctx for static methods.
3140  */
3141 static MonoInst*
3142 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3143 {
3144         MonoInst *this_ins = NULL;
3145
3146         g_assert (cfg->gshared);
3147
3148         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3149                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3150                 !method->klass->valuetype)
3151                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
3152
3153         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3154                 MonoInst *mrgctx_loc, *mrgctx_var;
3155
3156                 g_assert (!this_ins);
3157                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3158
3159                 mrgctx_loc = mono_get_vtable_var (cfg);
3160                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3161
3162                 return mrgctx_var;
3163         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
3164                 MonoInst *mrgctx_loc, *mrgctx_var;
3165
3166                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
3167                 mrgctx_loc = mono_get_vtable_var (cfg);
3168                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3169
3170                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
3171
3172                 return mrgctx_var;
3173         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3174                 MonoInst *vtable_loc, *vtable_var;
3175
3176                 g_assert (!this_ins);
3177
3178                 vtable_loc = mono_get_vtable_var (cfg);
3179                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3180
3181                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3182                         MonoInst *mrgctx_var = vtable_var;
3183                         int vtable_reg;
3184
3185                         vtable_reg = alloc_preg (cfg);
3186                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3187                         vtable_var->type = STACK_PTR;
3188                 }
3189
3190                 return vtable_var;
3191         } else {
3192                 MonoInst *ins;
3193                 int vtable_reg;
3194
3195                 vtable_reg = alloc_preg (cfg);
3196                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3197                 return ins;
3198         }
3199 }
3200
3201 static MonoJumpInfoRgctxEntry *
3202 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3203 {
3204         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3205         res->method = method;
3206         res->in_mrgctx = in_mrgctx;
3207         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3208         res->data->type = patch_type;
3209         res->data->data.target = patch_data;
3210         res->info_type = info_type;
3211
3212         return res;
3213 }
3214
3215 static inline MonoInst*
3216 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3217 {
3218         MonoInst *args [16];
3219         MonoInst *call;
3220
3221         // FIXME: No fastpath since the slot is not a compile time constant
3222         args [0] = rgctx;
3223         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3224         if (entry->in_mrgctx)
3225                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3226         else
3227                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3228         return call;
3229 #if 0
3230         /*
3231          * FIXME: This can be called during decompose, which is a problem since it creates
3232          * new bblocks.
3233          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3234          */
3235         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3236         gboolean mrgctx;
3237         MonoBasicBlock *is_null_bb, *end_bb;
3238         MonoInst *res, *ins, *call;
3239         MonoInst *args[16];
3240
3241         slot = mini_get_rgctx_entry_slot (entry);
3242
3243         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3244         index = MONO_RGCTX_SLOT_INDEX (slot);
3245         if (mrgctx)
3246                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3247         for (depth = 0; ; ++depth) {
3248                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3249
3250                 if (index < size - 1)
3251                         break;
3252                 index -= size - 1;
3253         }
3254
3255         NEW_BBLOCK (cfg, end_bb);
3256         NEW_BBLOCK (cfg, is_null_bb);
3257
3258         if (mrgctx) {
3259                 rgctx_reg = rgctx->dreg;
3260         } else {
3261                 rgctx_reg = alloc_preg (cfg);
3262
3263                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3264                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3265                 NEW_BBLOCK (cfg, is_null_bb);
3266
3267                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3268                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3269         }
3270
3271         for (i = 0; i < depth; ++i) {
3272                 int array_reg = alloc_preg (cfg);
3273
3274                 /* load ptr to next array */
3275                 if (mrgctx && i == 0)
3276                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3277                 else
3278                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3279                 rgctx_reg = array_reg;
3280                 /* is the ptr null? */
3281                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3282                 /* if yes, jump to actual trampoline */
3283                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3284         }
3285
3286         /* fetch slot */
3287         val_reg = alloc_preg (cfg);
3288         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3289         /* is the slot null? */
3290         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3291         /* if yes, jump to actual trampoline */
3292         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3293
3294         /* Fastpath */
3295         res_reg = alloc_preg (cfg);
3296         MONO_INST_NEW (cfg, ins, OP_MOVE);
3297         ins->dreg = res_reg;
3298         ins->sreg1 = val_reg;
3299         MONO_ADD_INS (cfg->cbb, ins);
3300         res = ins;
3301         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3302
3303         /* Slowpath */
3304         MONO_START_BB (cfg, is_null_bb);
3305         args [0] = rgctx;
3306         EMIT_NEW_ICONST (cfg, args [1], index);
3307         if (mrgctx)
3308                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3309         else
3310                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3311         MONO_INST_NEW (cfg, ins, OP_MOVE);
3312         ins->dreg = res_reg;
3313         ins->sreg1 = call->dreg;
3314         MONO_ADD_INS (cfg->cbb, ins);
3315         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3316
3317         MONO_START_BB (cfg, end_bb);
3318
3319         return res;
3320 #endif
3321 }
3322
3323 /*
3324  * emit_rgctx_fetch:
3325  *
3326  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3327  * given by RGCTX.
3328  */
3329 static inline MonoInst*
3330 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3331 {
3332         if (cfg->llvm_only)
3333                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3334         else
3335                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3336 }
3337
3338 MonoInst*
3339 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3340                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3341 {
3342         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);
3343         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3344
3345         return emit_rgctx_fetch (cfg, rgctx, entry);
3346 }
3347
3348 static MonoInst*
3349 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3350                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3351 {
3352         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);
3353         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3354
3355         return emit_rgctx_fetch (cfg, rgctx, entry);
3356 }
3357
3358 static MonoInst*
3359 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3360                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3361 {
3362         MonoJumpInfoGSharedVtCall *call_info;
3363         MonoJumpInfoRgctxEntry *entry;
3364         MonoInst *rgctx;
3365
3366         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3367         call_info->sig = sig;
3368         call_info->method = cmethod;
3369
3370         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);
3371         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3372
3373         return emit_rgctx_fetch (cfg, rgctx, entry);
3374 }
3375
3376 /*
3377  * emit_get_rgctx_virt_method:
3378  *
3379  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3380  */
3381 static MonoInst*
3382 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3383                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3384 {
3385         MonoJumpInfoVirtMethod *info;
3386         MonoJumpInfoRgctxEntry *entry;
3387         MonoInst *rgctx;
3388
3389         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3390         info->klass = klass;
3391         info->method = virt_method;
3392
3393         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);
3394         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3395
3396         return emit_rgctx_fetch (cfg, rgctx, entry);
3397 }
3398
3399 static MonoInst*
3400 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3401                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3402 {
3403         MonoJumpInfoRgctxEntry *entry;
3404         MonoInst *rgctx;
3405
3406         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);
3407         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3408
3409         return emit_rgctx_fetch (cfg, rgctx, entry);
3410 }
3411
3412 /*
3413  * emit_get_rgctx_method:
3414  *
3415  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3416  * normal constants, else emit a load from the rgctx.
3417  */
3418 static MonoInst*
3419 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3420                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3421 {
3422         if (!context_used) {
3423                 MonoInst *ins;
3424
3425                 switch (rgctx_type) {
3426                 case MONO_RGCTX_INFO_METHOD:
3427                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3428                         return ins;
3429                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3430                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3431                         return ins;
3432                 default:
3433                         g_assert_not_reached ();
3434                 }
3435         } else {
3436                 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);
3437                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3438
3439                 return emit_rgctx_fetch (cfg, rgctx, entry);
3440         }
3441 }
3442
3443 static MonoInst*
3444 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3445                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3446 {
3447         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);
3448         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3449
3450         return emit_rgctx_fetch (cfg, rgctx, entry);
3451 }
3452
3453 static int
3454 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3455 {
3456         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3457         MonoRuntimeGenericContextInfoTemplate *template_;
3458         int i, idx;
3459
3460         g_assert (info);
3461
3462         for (i = 0; i < info->num_entries; ++i) {
3463                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3464
3465                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3466                         return i;
3467         }
3468
3469         if (info->num_entries == info->count_entries) {
3470                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3471                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3472
3473                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3474
3475                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3476                 info->entries = new_entries;
3477                 info->count_entries = new_count_entries;
3478         }
3479
3480         idx = info->num_entries;
3481         template_ = &info->entries [idx];
3482         template_->info_type = rgctx_type;
3483         template_->data = data;
3484
3485         info->num_entries ++;
3486
3487         return idx;
3488 }
3489
3490 /*
3491  * emit_get_gsharedvt_info:
3492  *
3493  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3494  */
3495 static MonoInst*
3496 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3497 {
3498         MonoInst *ins;
3499         int idx, dreg;
3500
3501         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3502         /* Load info->entries [idx] */
3503         dreg = alloc_preg (cfg);
3504         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3505
3506         return ins;
3507 }
3508
3509 MonoInst*
3510 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3511 {
3512         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3513 }
3514
3515 /*
3516  * On return the caller must check @klass for load errors.
3517  */
3518 static void
3519 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3520 {
3521         MonoInst *vtable_arg;
3522         int context_used;
3523
3524         context_used = mini_class_check_context_used (cfg, klass);
3525
3526         if (context_used) {
3527                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3528                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3529         } else {
3530                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3531
3532                 if (!vtable)
3533                         return;
3534                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3535         }
3536
3537         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3538                 MonoInst *ins;
3539
3540                 /*
3541                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3542                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3543                  */
3544                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3545                 ins->sreg1 = vtable_arg->dreg;
3546                 MONO_ADD_INS (cfg->cbb, ins);
3547         } else {
3548                 int inited_reg;
3549                 MonoBasicBlock *inited_bb;
3550                 MonoInst *args [16];
3551
3552                 inited_reg = alloc_ireg (cfg);
3553
3554                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3555
3556                 NEW_BBLOCK (cfg, inited_bb);
3557
3558                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3559                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3560
3561                 args [0] = vtable_arg;
3562                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3563
3564                 MONO_START_BB (cfg, inited_bb);
3565         }
3566 }
3567
3568 static void
3569 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3570 {
3571         MonoInst *ins;
3572
3573         if (cfg->gen_seq_points && cfg->method == method) {
3574                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3575                 if (nonempty_stack)
3576                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3577                 MONO_ADD_INS (cfg->cbb, ins);
3578         }
3579 }
3580
3581 void
3582 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3583 {
3584         if (mini_get_debug_options ()->better_cast_details) {
3585                 int vtable_reg = alloc_preg (cfg);
3586                 int klass_reg = alloc_preg (cfg);
3587                 MonoBasicBlock *is_null_bb = NULL;
3588                 MonoInst *tls_get;
3589                 int to_klass_reg, context_used;
3590
3591                 if (null_check) {
3592                         NEW_BBLOCK (cfg, is_null_bb);
3593
3594                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3595                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3596                 }
3597
3598                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3599                 if (!tls_get) {
3600                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3601                         exit (1);
3602                 }
3603
3604                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3605                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3606
3607                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3608
3609                 context_used = mini_class_check_context_used (cfg, klass);
3610                 if (context_used) {
3611                         MonoInst *class_ins;
3612
3613                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3614                         to_klass_reg = class_ins->dreg;
3615                 } else {
3616                         to_klass_reg = alloc_preg (cfg);
3617                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3618                 }
3619                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3620
3621                 if (null_check)
3622                         MONO_START_BB (cfg, is_null_bb);
3623         }
3624 }
3625
3626 void
3627 mini_reset_cast_details (MonoCompile *cfg)
3628 {
3629         /* Reset the variables holding the cast details */
3630         if (mini_get_debug_options ()->better_cast_details) {
3631                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3632                 /* It is enough to reset the from field */
3633                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3634         }
3635 }
3636
3637 /*
3638  * On return the caller must check @array_class for load errors
3639  */
3640 static void
3641 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3642 {
3643         int vtable_reg = alloc_preg (cfg);
3644         int context_used;
3645
3646         context_used = mini_class_check_context_used (cfg, array_class);
3647
3648         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3649
3650         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3651
3652         if (cfg->opt & MONO_OPT_SHARED) {
3653                 int class_reg = alloc_preg (cfg);
3654                 MonoInst *ins;
3655
3656                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3657                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3658                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3659         } else if (context_used) {
3660                 MonoInst *vtable_ins;
3661
3662                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3663                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3664         } else {
3665                 if (cfg->compile_aot) {
3666                         int vt_reg;
3667                         MonoVTable *vtable;
3668
3669                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3670                                 return;
3671                         vt_reg = alloc_preg (cfg);
3672                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3673                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3674                 } else {
3675                         MonoVTable *vtable;
3676                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3677                                 return;
3678                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3679                 }
3680         }
3681
3682         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3683
3684         mini_reset_cast_details (cfg);
3685 }
3686
3687 /**
3688  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3689  * generic code is generated.
3690  */
3691 static MonoInst*
3692 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3693 {
3694         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3695
3696         if (context_used) {
3697                 MonoInst *rgctx, *addr;
3698
3699                 /* FIXME: What if the class is shared?  We might not
3700                    have to get the address of the method from the
3701                    RGCTX. */
3702                 addr = emit_get_rgctx_method (cfg, context_used, method,
3703                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3704                 if (cfg->llvm_only) {
3705                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3706                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3707                 } else {
3708                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3709
3710                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3711                 }
3712         } else {
3713                 gboolean pass_vtable, pass_mrgctx;
3714                 MonoInst *rgctx_arg = NULL;
3715
3716                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3717                 g_assert (!pass_mrgctx);
3718
3719                 if (pass_vtable) {
3720                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3721
3722                         g_assert (vtable);
3723                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3724                 }
3725
3726                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3727         }
3728 }
3729
3730 static MonoInst*
3731 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3732 {
3733         MonoInst *add;
3734         int obj_reg;
3735         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3736         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3737         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3738         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3739
3740         obj_reg = sp [0]->dreg;
3741         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3742         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3743
3744         /* FIXME: generics */
3745         g_assert (klass->rank == 0);
3746
3747         // Check rank == 0
3748         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3749         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3750
3751         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3752         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3753
3754         if (context_used) {
3755                 MonoInst *element_class;
3756
3757                 /* This assertion is from the unboxcast insn */
3758                 g_assert (klass->rank == 0);
3759
3760                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3761                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3762
3763                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3764                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3765         } else {
3766                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3767                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3768                 mini_reset_cast_details (cfg);
3769         }
3770
3771         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3772         MONO_ADD_INS (cfg->cbb, add);
3773         add->type = STACK_MP;
3774         add->klass = klass;
3775
3776         return add;
3777 }
3778
3779 static MonoInst*
3780 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3781 {
3782         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3783         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3784         MonoInst *ins;
3785         int dreg, addr_reg;
3786
3787         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3788
3789         /* obj */
3790         args [0] = obj;
3791
3792         /* klass */
3793         args [1] = klass_inst;
3794
3795         /* CASTCLASS */
3796         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3797
3798         NEW_BBLOCK (cfg, is_ref_bb);
3799         NEW_BBLOCK (cfg, is_nullable_bb);
3800         NEW_BBLOCK (cfg, end_bb);
3801         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3802         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3803         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3804
3805         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3806         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3807
3808         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3809         addr_reg = alloc_dreg (cfg, STACK_MP);
3810
3811         /* Non-ref case */
3812         /* UNBOX */
3813         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3814         MONO_ADD_INS (cfg->cbb, addr);
3815
3816         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3817
3818         /* Ref case */
3819         MONO_START_BB (cfg, is_ref_bb);
3820
3821         /* Save the ref to a temporary */
3822         dreg = alloc_ireg (cfg);
3823         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3824         addr->dreg = addr_reg;
3825         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3826         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3827
3828         /* Nullable case */
3829         MONO_START_BB (cfg, is_nullable_bb);
3830
3831         {
3832                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3833                 MonoInst *unbox_call;
3834                 MonoMethodSignature *unbox_sig;
3835
3836                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3837                 unbox_sig->ret = &klass->byval_arg;
3838                 unbox_sig->param_count = 1;
3839                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3840
3841                 if (cfg->llvm_only)
3842                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3843                 else
3844                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3845
3846                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3847                 addr->dreg = addr_reg;
3848         }
3849
3850         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3851
3852         /* End */
3853         MONO_START_BB (cfg, end_bb);
3854
3855         /* LDOBJ */
3856         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3857
3858         return ins;
3859 }
3860
3861 /*
3862  * Returns NULL and set the cfg exception on error.
3863  */
3864 static MonoInst*
3865 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3866 {
3867         MonoInst *iargs [2];
3868         void *alloc_ftn;
3869
3870         if (context_used) {
3871                 MonoInst *data;
3872                 MonoRgctxInfoType rgctx_info;
3873                 MonoInst *iargs [2];
3874                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3875
3876                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3877
3878                 if (cfg->opt & MONO_OPT_SHARED)
3879                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3880                 else
3881                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3882                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3883
3884                 if (cfg->opt & MONO_OPT_SHARED) {
3885                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3886                         iargs [1] = data;
3887                         alloc_ftn = ves_icall_object_new;
3888                 } else {
3889                         iargs [0] = data;
3890                         alloc_ftn = ves_icall_object_new_specific;
3891                 }
3892
3893                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3894                         if (known_instance_size) {
3895                                 int size = mono_class_instance_size (klass);
3896                                 if (size < sizeof (MonoObject))
3897                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3898
3899                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3900                         }
3901                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3902                 }
3903
3904                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3905         }
3906
3907         if (cfg->opt & MONO_OPT_SHARED) {
3908                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3909                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3910
3911                 alloc_ftn = ves_icall_object_new;
3912         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3913                 /* This happens often in argument checking code, eg. throw new FooException... */
3914                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3915                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3916                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3917         } else {
3918                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3919                 MonoMethod *managed_alloc = NULL;
3920                 gboolean pass_lw;
3921
3922                 if (!vtable) {
3923                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3924                         cfg->exception_ptr = klass;
3925                         return NULL;
3926                 }
3927
3928                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3929
3930                 if (managed_alloc) {
3931                         int size = mono_class_instance_size (klass);
3932                         if (size < sizeof (MonoObject))
3933                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3934
3935                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3936                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3937                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3938                 }
3939                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3940                 if (pass_lw) {
3941                         guint32 lw = vtable->klass->instance_size;
3942                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3943                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3944                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3945                 }
3946                 else {
3947                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3948                 }
3949         }
3950
3951         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3952 }
3953
3954 /*
3955  * Returns NULL and set the cfg exception on error.
3956  */
3957 static MonoInst*
3958 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3959 {
3960         MonoInst *alloc, *ins;
3961
3962         if (mono_class_is_nullable (klass)) {
3963                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3964
3965                 if (context_used) {
3966                         if (cfg->llvm_only && cfg->gsharedvt) {
3967                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3968                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3969                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3970                         } else {
3971                                 /* FIXME: What if the class is shared?  We might not
3972                                    have to get the method address from the RGCTX. */
3973                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3974                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3975                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3976
3977                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3978                         }
3979                 } else {
3980                         gboolean pass_vtable, pass_mrgctx;
3981                         MonoInst *rgctx_arg = NULL;
3982
3983                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3984                         g_assert (!pass_mrgctx);
3985
3986                         if (pass_vtable) {
3987                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3988
3989                                 g_assert (vtable);
3990                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3991                         }
3992
3993                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3994                 }
3995         }
3996
3997         if (mini_is_gsharedvt_klass (klass)) {
3998                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3999                 MonoInst *res, *is_ref, *src_var, *addr;
4000                 int dreg;
4001
4002                 dreg = alloc_ireg (cfg);
4003
4004                 NEW_BBLOCK (cfg, is_ref_bb);
4005                 NEW_BBLOCK (cfg, is_nullable_bb);
4006                 NEW_BBLOCK (cfg, end_bb);
4007                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4008                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4009                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4010
4011                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4012                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4013
4014                 /* Non-ref case */
4015                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4016                 if (!alloc)
4017                         return NULL;
4018                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4019                 ins->opcode = OP_STOREV_MEMBASE;
4020
4021                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4022                 res->type = STACK_OBJ;
4023                 res->klass = klass;
4024                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4025
4026                 /* Ref case */
4027                 MONO_START_BB (cfg, is_ref_bb);
4028
4029                 /* val is a vtype, so has to load the value manually */
4030                 src_var = get_vreg_to_inst (cfg, val->dreg);
4031                 if (!src_var)
4032                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4033                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4034                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4035                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4036
4037                 /* Nullable case */
4038                 MONO_START_BB (cfg, is_nullable_bb);
4039
4040                 {
4041                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
4042                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4043                         MonoInst *box_call;
4044                         MonoMethodSignature *box_sig;
4045
4046                         /*
4047                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4048                          * construct that method at JIT time, so have to do things by hand.
4049                          */
4050                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4051                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4052                         box_sig->param_count = 1;
4053                         box_sig->params [0] = &klass->byval_arg;
4054
4055                         if (cfg->llvm_only)
4056                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4057                         else
4058                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4059                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4060                         res->type = STACK_OBJ;
4061                         res->klass = klass;
4062                 }
4063
4064                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4065
4066                 MONO_START_BB (cfg, end_bb);
4067
4068                 return res;
4069         } else {
4070                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4071                 if (!alloc)
4072                         return NULL;
4073
4074                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4075                 return alloc;
4076         }
4077 }
4078
4079 static GHashTable* direct_icall_type_hash;
4080
4081 static gboolean
4082 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4083 {
4084         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4085         if (!direct_icalls_enabled (cfg))
4086                 return FALSE;
4087
4088         /*
4089          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4090          * Whitelist a few icalls for now.
4091          */
4092         if (!direct_icall_type_hash) {
4093                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4094
4095                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4096                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4097                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4098                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4099                 mono_memory_barrier ();
4100                 direct_icall_type_hash = h;
4101         }
4102
4103         if (cmethod->klass == mono_defaults.math_class)
4104                 return TRUE;
4105         /* No locking needed */
4106         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4107                 return TRUE;
4108         return FALSE;
4109 }
4110
4111 static gboolean
4112 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
4113 {
4114         if (cmethod->klass == mono_defaults.systemtype_class) {
4115                 if (!strcmp (cmethod->name, "GetType"))
4116                         return TRUE;
4117         }
4118         return FALSE;
4119 }
4120
4121 static G_GNUC_UNUSED MonoInst*
4122 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4123 {
4124         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4125         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4126         gboolean is_i4;
4127
4128         switch (enum_type->type) {
4129         case MONO_TYPE_I8:
4130         case MONO_TYPE_U8:
4131 #if SIZEOF_REGISTER == 8
4132         case MONO_TYPE_I:
4133         case MONO_TYPE_U:
4134 #endif
4135                 is_i4 = FALSE;
4136                 break;
4137         default:
4138                 is_i4 = TRUE;
4139                 break;
4140         }
4141
4142         {
4143                 MonoInst *load, *and_, *cmp, *ceq;
4144                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4145                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4146                 int dest_reg = alloc_ireg (cfg);
4147
4148                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4149                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4150                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4151                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4152
4153                 ceq->type = STACK_I4;
4154
4155                 if (!is_i4) {
4156                         load = mono_decompose_opcode (cfg, load);
4157                         and_ = mono_decompose_opcode (cfg, and_);
4158                         cmp = mono_decompose_opcode (cfg, cmp);
4159                         ceq = mono_decompose_opcode (cfg, ceq);
4160                 }
4161
4162                 return ceq;
4163         }
4164 }
4165
4166 /*
4167  * Returns NULL and set the cfg exception on error.
4168  */
4169 static G_GNUC_UNUSED MonoInst*
4170 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
4171 {
4172         MonoInst *ptr;
4173         int dreg;
4174         gpointer trampoline;
4175         MonoInst *obj, *method_ins, *tramp_ins;
4176         MonoDomain *domain;
4177         guint8 **code_slot;
4178
4179         if (virtual_ && !cfg->llvm_only) {
4180                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
4181                 g_assert (invoke);
4182
4183                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
4184                         return NULL;
4185         }
4186
4187         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
4188         if (!obj)
4189                 return NULL;
4190
4191         /* Inline the contents of mono_delegate_ctor */
4192
4193         /* Set target field */
4194         /* Optimize away setting of NULL target */
4195         if (!MONO_INS_IS_PCONST_NULL (target)) {
4196                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4197                 if (cfg->gen_write_barriers) {
4198                         dreg = alloc_preg (cfg);
4199                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4200                         mini_emit_write_barrier (cfg, ptr, target);
4201                 }
4202         }
4203
4204         /* Set method field */
4205         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4206         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4207
4208         /*
4209          * To avoid looking up the compiled code belonging to the target method
4210          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4211          * store it, and we fill it after the method has been compiled.
4212          */
4213         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4214                 MonoInst *code_slot_ins;
4215
4216                 if (context_used) {
4217                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4218                 } else {
4219                         domain = mono_domain_get ();
4220                         mono_domain_lock (domain);
4221                         if (!domain_jit_info (domain)->method_code_hash)
4222                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4223                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4224                         if (!code_slot) {
4225                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4226                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4227                         }
4228                         mono_domain_unlock (domain);
4229
4230                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4231                 }
4232                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4233         }
4234
4235         if (cfg->llvm_only) {
4236                 MonoInst *args [16];
4237
4238                 if (virtual_) {
4239                         args [0] = obj;
4240                         args [1] = target;
4241                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4242                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4243                 } else {
4244                         args [0] = obj;
4245                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4246                 }
4247
4248                 return obj;
4249         }
4250
4251         if (cfg->compile_aot) {
4252                 MonoDelegateClassMethodPair *del_tramp;
4253
4254                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4255                 del_tramp->klass = klass;
4256                 del_tramp->method = context_used ? NULL : method;
4257                 del_tramp->is_virtual = virtual_;
4258                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4259         } else {
4260                 if (virtual_)
4261                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4262                 else
4263                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4264                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4265         }
4266
4267         /* Set invoke_impl field */
4268         if (virtual_) {
4269                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4270         } else {
4271                 dreg = alloc_preg (cfg);
4272                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4273                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4274
4275                 dreg = alloc_preg (cfg);
4276                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4277                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4278         }
4279
4280         dreg = alloc_preg (cfg);
4281         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4282         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4283
4284         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4285
4286         return obj;
4287 }
4288
4289 static MonoInst*
4290 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4291 {
4292         MonoJitICallInfo *info;
4293
4294         /* Need to register the icall so it gets an icall wrapper */
4295         info = mono_get_array_new_va_icall (rank);
4296
4297         cfg->flags |= MONO_CFG_HAS_VARARGS;
4298
4299         /* mono_array_new_va () needs a vararg calling convention */
4300         cfg->exception_message = g_strdup ("array-new");
4301         cfg->disable_llvm = TRUE;
4302
4303         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4304         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4305 }
4306
4307 /*
4308  * handle_constrained_gsharedvt_call:
4309  *
4310  *   Handle constrained calls where the receiver is a gsharedvt type.
4311  * Return the instruction representing the call. Set the cfg exception on failure.
4312  */
4313 static MonoInst*
4314 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4315                                                                    gboolean *ref_emit_widen)
4316 {
4317         MonoInst *ins = NULL;
4318         gboolean emit_widen = *ref_emit_widen;
4319
4320         /*
4321          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4322          * 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
4323          * pack the arguments into an array, and do the rest of the work in in an icall.
4324          */
4325         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4326                 (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)) &&
4327                 (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]))))) {
4328                 MonoInst *args [16];
4329
4330                 /*
4331                  * This case handles calls to
4332                  * - object:ToString()/Equals()/GetHashCode(),
4333                  * - System.IComparable<T>:CompareTo()
4334                  * - System.IEquatable<T>:Equals ()
4335                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4336                  */
4337
4338                 args [0] = sp [0];
4339                 if (mono_method_check_context_used (cmethod))
4340                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4341                 else
4342                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4343                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4344
4345                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4346                 if (fsig->hasthis && fsig->param_count) {
4347                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4348                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4349                         ins->dreg = alloc_preg (cfg);
4350                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4351                         MONO_ADD_INS (cfg->cbb, ins);
4352                         args [4] = ins;
4353
4354                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4355                                 int addr_reg, deref_arg_reg;
4356
4357                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4358                                 deref_arg_reg = alloc_preg (cfg);
4359                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4360                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4361
4362                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4363                                 addr_reg = ins->dreg;
4364                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4365                         } else {
4366                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4367                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4368                         }
4369                 } else {
4370                         EMIT_NEW_ICONST (cfg, args [3], 0);
4371                         EMIT_NEW_ICONST (cfg, args [4], 0);
4372                 }
4373                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4374                 emit_widen = FALSE;
4375
4376                 if (mini_is_gsharedvt_type (fsig->ret)) {
4377                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4378                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4379                         MonoInst *add;
4380
4381                         /* Unbox */
4382                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4383                         MONO_ADD_INS (cfg->cbb, add);
4384                         /* Load value */
4385                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4386                         MONO_ADD_INS (cfg->cbb, ins);
4387                         /* ins represents the call result */
4388                 }
4389         } else {
4390                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4391         }
4392
4393         *ref_emit_widen = emit_widen;
4394
4395         return ins;
4396
4397  exception_exit:
4398         return NULL;
4399 }
4400
4401 static void
4402 mono_emit_load_got_addr (MonoCompile *cfg)
4403 {
4404         MonoInst *getaddr, *dummy_use;
4405
4406         if (!cfg->got_var || cfg->got_var_allocated)
4407                 return;
4408
4409         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4410         getaddr->cil_code = cfg->header->code;
4411         getaddr->dreg = cfg->got_var->dreg;
4412
4413         /* Add it to the start of the first bblock */
4414         if (cfg->bb_entry->code) {
4415                 getaddr->next = cfg->bb_entry->code;
4416                 cfg->bb_entry->code = getaddr;
4417         }
4418         else
4419                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4420
4421         cfg->got_var_allocated = TRUE;
4422
4423         /*
4424          * Add a dummy use to keep the got_var alive, since real uses might
4425          * only be generated by the back ends.
4426          * Add it to end_bblock, so the variable's lifetime covers the whole
4427          * method.
4428          * It would be better to make the usage of the got var explicit in all
4429          * cases when the backend needs it (i.e. calls, throw etc.), so this
4430          * wouldn't be needed.
4431          */
4432         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4433         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4434 }
4435
4436 static int inline_limit;
4437 static gboolean inline_limit_inited;
4438
4439 static gboolean
4440 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4441 {
4442         MonoMethodHeaderSummary header;
4443         MonoVTable *vtable;
4444 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4445         MonoMethodSignature *sig = mono_method_signature (method);
4446         int i;
4447 #endif
4448
4449         if (cfg->disable_inline)
4450                 return FALSE;
4451         if (cfg->gsharedvt)
4452                 return FALSE;
4453
4454         if (cfg->inline_depth > 10)
4455                 return FALSE;
4456
4457         if (!mono_method_get_header_summary (method, &header))
4458                 return FALSE;
4459
4460         /*runtime, icall and pinvoke are checked by summary call*/
4461         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4462             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4463             (mono_class_is_marshalbyref (method->klass)) ||
4464             header.has_clauses)
4465                 return FALSE;
4466
4467         /* also consider num_locals? */
4468         /* Do the size check early to avoid creating vtables */
4469         if (!inline_limit_inited) {
4470                 char *inlinelimit;
4471                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4472                         inline_limit = atoi (inlinelimit);
4473                         g_free (inlinelimit);
4474                 } else
4475                         inline_limit = INLINE_LENGTH_LIMIT;
4476                 inline_limit_inited = TRUE;
4477         }
4478         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4479                 return FALSE;
4480
4481         /*
4482          * if we can initialize the class of the method right away, we do,
4483          * otherwise we don't allow inlining if the class needs initialization,
4484          * since it would mean inserting a call to mono_runtime_class_init()
4485          * inside the inlined code
4486          */
4487         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4488                 return FALSE;
4489
4490         if (!(cfg->opt & MONO_OPT_SHARED)) {
4491                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4492                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4493                         if (method->klass->has_cctor) {
4494                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4495                                 if (!vtable)
4496                                         return FALSE;
4497                                 if (!cfg->compile_aot) {
4498                                         MonoError error;
4499                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4500                                                 mono_error_cleanup (&error);
4501                                                 return FALSE;
4502                                         }
4503                                 }
4504                         }
4505                 } else if (mono_class_is_before_field_init (method->klass)) {
4506                         if (cfg->run_cctors && method->klass->has_cctor) {
4507                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4508                                 if (!method->klass->runtime_info)
4509                                         /* No vtable created yet */
4510                                         return FALSE;
4511                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4512                                 if (!vtable)
4513                                         return FALSE;
4514                                 /* This makes so that inline cannot trigger */
4515                                 /* .cctors: too many apps depend on them */
4516                                 /* running with a specific order... */
4517                                 if (! vtable->initialized)
4518                                         return FALSE;
4519                                 MonoError error;
4520                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4521                                         mono_error_cleanup (&error);
4522                                         return FALSE;
4523                                 }
4524                         }
4525                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4526                         if (!method->klass->runtime_info)
4527                                 /* No vtable created yet */
4528                                 return FALSE;
4529                         vtable = mono_class_vtable (cfg->domain, method->klass);
4530                         if (!vtable)
4531                                 return FALSE;
4532                         if (!vtable->initialized)
4533                                 return FALSE;
4534                 }
4535         } else {
4536                 /*
4537                  * If we're compiling for shared code
4538                  * the cctor will need to be run at aot method load time, for example,
4539                  * or at the end of the compilation of the inlining method.
4540                  */
4541                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4542                         return FALSE;
4543         }
4544
4545 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4546         if (mono_arch_is_soft_float ()) {
4547                 /* FIXME: */
4548                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4549                         return FALSE;
4550                 for (i = 0; i < sig->param_count; ++i)
4551                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4552                                 return FALSE;
4553         }
4554 #endif
4555
4556         if (g_list_find (cfg->dont_inline, method))
4557                 return FALSE;
4558
4559         return TRUE;
4560 }
4561
4562 static gboolean
4563 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4564 {
4565         if (!cfg->compile_aot) {
4566                 g_assert (vtable);
4567                 if (vtable->initialized)
4568                         return FALSE;
4569         }
4570
4571         if (mono_class_is_before_field_init (klass)) {
4572                 if (cfg->method == method)
4573                         return FALSE;
4574         }
4575
4576         if (!mono_class_needs_cctor_run (klass, method))
4577                 return FALSE;
4578
4579         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4580                 /* The initialization is already done before the method is called */
4581                 return FALSE;
4582
4583         return TRUE;
4584 }
4585
4586 MonoInst*
4587 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4588 {
4589         MonoInst *ins;
4590         guint32 size;
4591         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4592         int context_used;
4593
4594         if (mini_is_gsharedvt_variable_klass (klass)) {
4595                 size = -1;
4596         } else {
4597                 mono_class_init (klass);
4598                 size = mono_class_array_element_size (klass);
4599         }
4600
4601         mult_reg = alloc_preg (cfg);
4602         array_reg = arr->dreg;
4603         index_reg = index->dreg;
4604
4605 #if SIZEOF_REGISTER == 8
4606         /* The array reg is 64 bits but the index reg is only 32 */
4607         if (COMPILE_LLVM (cfg)) {
4608                 /*
4609                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4610                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4611                  * of OP_X86_LEA for llvm.
4612                  */
4613                 index2_reg = index_reg;
4614         } else {
4615                 index2_reg = alloc_preg (cfg);
4616                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4617         }
4618 #else
4619         if (index->type == STACK_I8) {
4620                 index2_reg = alloc_preg (cfg);
4621                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4622         } else {
4623                 index2_reg = index_reg;
4624         }
4625 #endif
4626
4627         if (bcheck)
4628                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4629
4630 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4631         if (size == 1 || size == 2 || size == 4 || size == 8) {
4632                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4633
4634                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4635                 ins->klass = mono_class_get_element_class (klass);
4636                 ins->type = STACK_MP;
4637
4638                 return ins;
4639         }
4640 #endif
4641
4642         add_reg = alloc_ireg_mp (cfg);
4643
4644         if (size == -1) {
4645                 MonoInst *rgctx_ins;
4646
4647                 /* gsharedvt */
4648                 g_assert (cfg->gshared);
4649                 context_used = mini_class_check_context_used (cfg, klass);
4650                 g_assert (context_used);
4651                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4652                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4653         } else {
4654                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4655         }
4656         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4657         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4658         ins->klass = mono_class_get_element_class (klass);
4659         ins->type = STACK_MP;
4660         MONO_ADD_INS (cfg->cbb, ins);
4661
4662         return ins;
4663 }
4664
4665 static MonoInst*
4666 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4667 {
4668         int bounds_reg = alloc_preg (cfg);
4669         int add_reg = alloc_ireg_mp (cfg);
4670         int mult_reg = alloc_preg (cfg);
4671         int mult2_reg = alloc_preg (cfg);
4672         int low1_reg = alloc_preg (cfg);
4673         int low2_reg = alloc_preg (cfg);
4674         int high1_reg = alloc_preg (cfg);
4675         int high2_reg = alloc_preg (cfg);
4676         int realidx1_reg = alloc_preg (cfg);
4677         int realidx2_reg = alloc_preg (cfg);
4678         int sum_reg = alloc_preg (cfg);
4679         int index1, index2, tmpreg;
4680         MonoInst *ins;
4681         guint32 size;
4682
4683         mono_class_init (klass);
4684         size = mono_class_array_element_size (klass);
4685
4686         index1 = index_ins1->dreg;
4687         index2 = index_ins2->dreg;
4688
4689 #if SIZEOF_REGISTER == 8
4690         /* The array reg is 64 bits but the index reg is only 32 */
4691         if (COMPILE_LLVM (cfg)) {
4692                 /* Not needed */
4693         } else {
4694                 tmpreg = alloc_preg (cfg);
4695                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4696                 index1 = tmpreg;
4697                 tmpreg = alloc_preg (cfg);
4698                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4699                 index2 = tmpreg;
4700         }
4701 #else
4702         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4703         tmpreg = -1;
4704 #endif
4705
4706         /* range checking */
4707         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4708                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4709
4710         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4711                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4712         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4713         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4714                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4715         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4716         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4717
4718         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4719                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4720         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4721         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4722                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4723         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4724         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4725
4726         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4727         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4728         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4729         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4730         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4731
4732         ins->type = STACK_MP;
4733         ins->klass = klass;
4734         MONO_ADD_INS (cfg->cbb, ins);
4735
4736         return ins;
4737 }
4738
4739 static MonoInst*
4740 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4741 {
4742         int rank;
4743         MonoInst *addr;
4744         MonoMethod *addr_method;
4745         int element_size;
4746         MonoClass *eclass = cmethod->klass->element_class;
4747
4748         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4749
4750         if (rank == 1)
4751                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4752
4753         /* emit_ldelema_2 depends on OP_LMUL */
4754         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4755                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4756         }
4757
4758         if (mini_is_gsharedvt_variable_klass (eclass))
4759                 element_size = 0;
4760         else
4761                 element_size = mono_class_array_element_size (eclass);
4762         addr_method = mono_marshal_get_array_address (rank, element_size);
4763         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4764
4765         return addr;
4766 }
4767
4768 static MonoBreakPolicy
4769 always_insert_breakpoint (MonoMethod *method)
4770 {
4771         return MONO_BREAK_POLICY_ALWAYS;
4772 }
4773
4774 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
4775
4776 /**
4777  * mono_set_break_policy:
4778  * \param policy_callback the new callback function
4779  *
4780  * Allow embedders to decide wherther to actually obey breakpoint instructions
4781  * (both break IL instructions and \c Debugger.Break method calls), for example
4782  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4783  * untrusted or semi-trusted code.
4784  *
4785  * \p policy_callback will be called every time a break point instruction needs to
4786  * be inserted with the method argument being the method that calls \c Debugger.Break
4787  * or has the IL \c break instruction. The callback should return \c MONO_BREAK_POLICY_NEVER
4788  * if it wants the breakpoint to not be effective in the given method.
4789  * \c MONO_BREAK_POLICY_ALWAYS is the default.
4790  */
4791 void
4792 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
4793 {
4794         if (policy_callback)
4795                 break_policy_func = policy_callback;
4796         else
4797                 break_policy_func = always_insert_breakpoint;
4798 }
4799
4800 static gboolean
4801 should_insert_brekpoint (MonoMethod *method) {
4802         switch (break_policy_func (method)) {
4803         case MONO_BREAK_POLICY_ALWAYS:
4804                 return TRUE;
4805         case MONO_BREAK_POLICY_NEVER:
4806                 return FALSE;
4807         case MONO_BREAK_POLICY_ON_DBG:
4808                 g_warning ("mdb no longer supported");
4809                 return FALSE;
4810         default:
4811                 g_warning ("Incorrect value returned from break policy callback");
4812                 return FALSE;
4813         }
4814 }
4815
4816 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4817 static MonoInst*
4818 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4819 {
4820         MonoInst *addr, *store, *load;
4821         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4822
4823         /* the bounds check is already done by the callers */
4824         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4825         if (is_set) {
4826                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4827                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4828                 if (mini_type_is_reference (&eklass->byval_arg))
4829                         mini_emit_write_barrier (cfg, addr, load);
4830         } else {
4831                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4832                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4833         }
4834         return store;
4835 }
4836
4837
4838 static gboolean
4839 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4840 {
4841         return mini_type_is_reference (&klass->byval_arg);
4842 }
4843
4844 static MonoInst*
4845 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4846 {
4847         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4848                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4849                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4850                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4851                 MonoInst *iargs [3];
4852
4853                 if (!helper->slot)
4854                         mono_class_setup_vtable (obj_array);
4855                 g_assert (helper->slot);
4856
4857                 if (sp [0]->type != STACK_OBJ)
4858                         return NULL;
4859                 if (sp [2]->type != STACK_OBJ)
4860                         return NULL;
4861
4862                 iargs [2] = sp [2];
4863                 iargs [1] = sp [1];
4864                 iargs [0] = sp [0];
4865
4866                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4867         } else {
4868                 MonoInst *ins;
4869
4870                 if (mini_is_gsharedvt_variable_klass (klass)) {
4871                         MonoInst *addr;
4872
4873                         // FIXME-VT: OP_ICONST optimization
4874                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4875                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4876                         ins->opcode = OP_STOREV_MEMBASE;
4877                 } else if (sp [1]->opcode == OP_ICONST) {
4878                         int array_reg = sp [0]->dreg;
4879                         int index_reg = sp [1]->dreg;
4880                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4881
4882                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4883                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4884
4885                         if (safety_checks)
4886                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4887                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4888                 } else {
4889                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4890                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4891                         if (generic_class_is_reference_type (cfg, klass))
4892                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4893                 }
4894                 return ins;
4895         }
4896 }
4897
4898 static MonoInst*
4899 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4900 {
4901         MonoClass *eklass;
4902
4903         if (is_set)
4904                 eklass = mono_class_from_mono_type (fsig->params [2]);
4905         else
4906                 eklass = mono_class_from_mono_type (fsig->ret);
4907
4908         if (is_set) {
4909                 return emit_array_store (cfg, eklass, args, FALSE);
4910         } else {
4911                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4912                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4913                 return ins;
4914         }
4915 }
4916
4917 static gboolean
4918 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4919 {
4920         uint32_t align;
4921         int param_size, return_size;
4922
4923         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4924         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4925
4926         if (cfg->verbose_level > 3)
4927                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4928
4929         //Don't allow mixing reference types with value types
4930         if (param_klass->valuetype != return_klass->valuetype) {
4931                 if (cfg->verbose_level > 3)
4932                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4933                 return FALSE;
4934         }
4935
4936         if (!param_klass->valuetype) {
4937                 if (cfg->verbose_level > 3)
4938                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4939                 return TRUE;
4940         }
4941
4942         //That are blitable
4943         if (param_klass->has_references || return_klass->has_references)
4944                 return FALSE;
4945
4946         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4947         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4948                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4949                         if (cfg->verbose_level > 3)
4950                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4951                 return FALSE;
4952         }
4953
4954         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4955                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4956                 if (cfg->verbose_level > 3)
4957                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4958                 return FALSE;
4959         }
4960
4961         param_size = mono_class_value_size (param_klass, &align);
4962         return_size = mono_class_value_size (return_klass, &align);
4963
4964         //We can do it if sizes match
4965         if (param_size == return_size) {
4966                 if (cfg->verbose_level > 3)
4967                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4968                 return TRUE;
4969         }
4970
4971         //No simple way to handle struct if sizes don't match
4972         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4973                 if (cfg->verbose_level > 3)
4974                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4975                 return FALSE;
4976         }
4977
4978         /*
4979          * Same reg size category.
4980          * A quick note on why we don't require widening here.
4981          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4982          *
4983          * Since the source value comes from a function argument, the JIT will already have
4984          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4985          */
4986         if (param_size <= 4 && return_size <= 4) {
4987                 if (cfg->verbose_level > 3)
4988                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4989                 return TRUE;
4990         }
4991
4992         return FALSE;
4993 }
4994
4995 static MonoInst*
4996 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4997 {
4998         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4999         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5000
5001         if (mini_is_gsharedvt_variable_type (fsig->ret))
5002                 return NULL;
5003
5004         //Valuetypes that are semantically equivalent or numbers than can be widened to
5005         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5006                 return args [0];
5007
5008         //Arrays of valuetypes that are semantically equivalent
5009         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5010                 return args [0];
5011
5012         return NULL;
5013 }
5014
5015 static MonoInst*
5016 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5017 {
5018 #ifdef MONO_ARCH_SIMD_INTRINSICS
5019         MonoInst *ins = NULL;
5020
5021         if (cfg->opt & MONO_OPT_SIMD) {
5022                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5023                 if (ins)
5024                         return ins;
5025         }
5026 #endif
5027
5028         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5029 }
5030
5031 MonoInst*
5032 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
5033 {
5034         MonoInst *ins = NULL;
5035         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5036         MONO_ADD_INS (cfg->cbb, ins);
5037         ins->backend.memory_barrier_kind = kind;
5038
5039         return ins;
5040 }
5041
5042 static MonoInst*
5043 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5044 {
5045         MonoInst *ins = NULL;
5046         int opcode = 0;
5047
5048         /* The LLVM backend supports these intrinsics */
5049         if (cmethod->klass == mono_defaults.math_class) {
5050                 if (strcmp (cmethod->name, "Sin") == 0) {
5051                         opcode = OP_SIN;
5052                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5053                         opcode = OP_COS;
5054                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5055                         opcode = OP_SQRT;
5056                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5057                         opcode = OP_ABS;
5058                 }
5059
5060                 if (opcode && fsig->param_count == 1) {
5061                         MONO_INST_NEW (cfg, ins, opcode);
5062                         ins->type = STACK_R8;
5063                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5064                         ins->sreg1 = args [0]->dreg;
5065                         MONO_ADD_INS (cfg->cbb, ins);
5066                 }
5067
5068                 opcode = 0;
5069                 if (cfg->opt & MONO_OPT_CMOV) {
5070                         if (strcmp (cmethod->name, "Min") == 0) {
5071                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5072                                         opcode = OP_IMIN;
5073                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5074                                         opcode = OP_IMIN_UN;
5075                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5076                                         opcode = OP_LMIN;
5077                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5078                                         opcode = OP_LMIN_UN;
5079                         } else if (strcmp (cmethod->name, "Max") == 0) {
5080                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5081                                         opcode = OP_IMAX;
5082                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5083                                         opcode = OP_IMAX_UN;
5084                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5085                                         opcode = OP_LMAX;
5086                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5087                                         opcode = OP_LMAX_UN;
5088                         }
5089                 }
5090
5091                 if (opcode && fsig->param_count == 2) {
5092                         MONO_INST_NEW (cfg, ins, opcode);
5093                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5094                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
5095                         ins->sreg1 = args [0]->dreg;
5096                         ins->sreg2 = args [1]->dreg;
5097                         MONO_ADD_INS (cfg->cbb, ins);
5098                 }
5099         }
5100
5101         return ins;
5102 }
5103
5104 static MonoInst*
5105 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5106 {
5107         if (cmethod->klass == mono_defaults.array_class) {
5108                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5109                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5110                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5111                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5112                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5113                         return emit_array_unsafe_mov (cfg, fsig, args);
5114         }
5115
5116         return NULL;
5117 }
5118
5119 static MonoInst*
5120 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5121 {
5122         MonoInst *ins = NULL;
5123         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5124
5125         if (cmethod->klass == mono_defaults.string_class) {
5126                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5127                         int dreg = alloc_ireg (cfg);
5128                         int index_reg = alloc_preg (cfg);
5129                         int add_reg = alloc_preg (cfg);
5130
5131 #if SIZEOF_REGISTER == 8
5132                         if (COMPILE_LLVM (cfg)) {
5133                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5134                         } else {
5135                                 /* The array reg is 64 bits but the index reg is only 32 */
5136                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5137                         }
5138 #else
5139                         index_reg = args [1]->dreg;
5140 #endif
5141                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5142
5143 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5144                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5145                         add_reg = ins->dreg;
5146                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5147                                                                    add_reg, 0);
5148 #else
5149                         int mult_reg = alloc_preg (cfg);
5150                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5151                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5152                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5153                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5154 #endif
5155                         type_from_op (cfg, ins, NULL, NULL);
5156                         return ins;
5157                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5158                         int dreg = alloc_ireg (cfg);
5159                         /* Decompose later to allow more optimizations */
5160                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5161                         ins->type = STACK_I4;
5162                         ins->flags |= MONO_INST_FAULT;
5163                         cfg->cbb->has_array_access = TRUE;
5164                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5165
5166                         return ins;
5167                 } else
5168                         return NULL;
5169         } else if (cmethod->klass == mono_defaults.object_class) {
5170                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5171                         int dreg = alloc_ireg_ref (cfg);
5172                         int vt_reg = alloc_preg (cfg);
5173                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5174                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
5175                         type_from_op (cfg, ins, NULL, NULL);
5176
5177                         return ins;
5178                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
5179                         int dreg = alloc_ireg (cfg);
5180                         int t1 = alloc_ireg (cfg);
5181
5182                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
5183                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
5184                         ins->type = STACK_I4;
5185
5186                         return ins;
5187                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
5188                         MONO_INST_NEW (cfg, ins, OP_NOP);
5189                         MONO_ADD_INS (cfg->cbb, ins);
5190                         return ins;
5191                 } else
5192                         return NULL;
5193         } else if (cmethod->klass == mono_defaults.array_class) {
5194                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5195                         return emit_array_generic_access (cfg, fsig, args, FALSE);
5196                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
5197                         return emit_array_generic_access (cfg, fsig, args, TRUE);
5198
5199 #ifndef MONO_BIG_ARRAYS
5200                 /*
5201                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
5202                  * Array methods.
5203                  */
5204                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
5205                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
5206                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
5207                         int dreg = alloc_ireg (cfg);
5208                         int bounds_reg = alloc_ireg_mp (cfg);
5209                         MonoBasicBlock *end_bb, *szarray_bb;
5210                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
5211
5212                         NEW_BBLOCK (cfg, end_bb);
5213                         NEW_BBLOCK (cfg, szarray_bb);
5214
5215                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
5216                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5217                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5218                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5219                         /* Non-szarray case */
5220                         if (get_length)
5221                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5222                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5223                         else
5224                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5225                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5226                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5227                         MONO_START_BB (cfg, szarray_bb);
5228                         /* Szarray case */
5229                         if (get_length)
5230                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5231                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5232                         else
5233                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5234                         MONO_START_BB (cfg, end_bb);
5235
5236                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5237                         ins->type = STACK_I4;
5238
5239                         return ins;
5240                 }
5241 #endif
5242
5243                 if (cmethod->name [0] != 'g')
5244                         return NULL;
5245
5246                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5247                         int dreg = alloc_ireg (cfg);
5248                         int vtable_reg = alloc_preg (cfg);
5249                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5250                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5251                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5252                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5253                         type_from_op (cfg, ins, NULL, NULL);
5254
5255                         return ins;
5256                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5257                         int dreg = alloc_ireg (cfg);
5258
5259                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5260                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5261                         type_from_op (cfg, ins, NULL, NULL);
5262
5263                         return ins;
5264                 } else
5265                         return NULL;
5266         } else if (cmethod->klass == runtime_helpers_class) {
5267                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5268                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5269                         return ins;
5270                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5271                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5272                         g_assert (ctx);
5273                         g_assert (ctx->method_inst);
5274                         g_assert (ctx->method_inst->type_argc == 1);
5275                         MonoType *t = mini_get_underlying_type (ctx->method_inst->type_argv [0]);
5276                         MonoClass *klass = mono_class_from_mono_type (t);
5277
5278                         ins = NULL;
5279
5280                         mono_class_init (klass);
5281                         if (MONO_TYPE_IS_REFERENCE (t))
5282                                 EMIT_NEW_ICONST (cfg, ins, 1);
5283                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5284                                 EMIT_NEW_ICONST (cfg, ins, 0);
5285                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5286                                 EMIT_NEW_ICONST (cfg, ins, 1);
5287                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5288                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5289                         else {
5290                                 g_assert (cfg->gshared);
5291
5292                                 int context_used = mini_class_check_context_used (cfg, klass);
5293
5294                                 /* This returns 1 or 2 */
5295                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, klass,   MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5296                                 int dreg = alloc_ireg (cfg);
5297                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5298                         }
5299
5300                         return ins;
5301                 } else
5302                         return NULL;
5303         } else if (cmethod->klass == mono_defaults.monitor_class) {
5304                 gboolean is_enter = FALSE;
5305                 gboolean is_v4 = FALSE;
5306
5307                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5308                         is_enter = TRUE;
5309                         is_v4 = TRUE;
5310                 }
5311                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5312                         is_enter = TRUE;
5313
5314                 if (is_enter) {
5315                         /*
5316                          * To make async stack traces work, icalls which can block should have a wrapper.
5317                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5318                          */
5319                         MonoBasicBlock *end_bb;
5320
5321                         NEW_BBLOCK (cfg, end_bb);
5322
5323                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5324                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5325                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5326                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5327                         MONO_START_BB (cfg, end_bb);
5328                         return ins;
5329                 }
5330         } else if (cmethod->klass == mono_defaults.thread_class) {
5331                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5332                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5333                         MONO_ADD_INS (cfg->cbb, ins);
5334                         return ins;
5335                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5336                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5337                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5338                         guint32 opcode = 0;
5339                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5340
5341                         if (fsig->params [0]->type == MONO_TYPE_I1)
5342                                 opcode = OP_LOADI1_MEMBASE;
5343                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5344                                 opcode = OP_LOADU1_MEMBASE;
5345                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5346                                 opcode = OP_LOADI2_MEMBASE;
5347                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5348                                 opcode = OP_LOADU2_MEMBASE;
5349                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5350                                 opcode = OP_LOADI4_MEMBASE;
5351                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5352                                 opcode = OP_LOADU4_MEMBASE;
5353                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5354                                 opcode = OP_LOADI8_MEMBASE;
5355                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5356                                 opcode = OP_LOADR4_MEMBASE;
5357                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5358                                 opcode = OP_LOADR8_MEMBASE;
5359                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5360                                 opcode = OP_LOAD_MEMBASE;
5361
5362                         if (opcode) {
5363                                 MONO_INST_NEW (cfg, ins, opcode);
5364                                 ins->inst_basereg = args [0]->dreg;
5365                                 ins->inst_offset = 0;
5366                                 MONO_ADD_INS (cfg->cbb, ins);
5367
5368                                 switch (fsig->params [0]->type) {
5369                                 case MONO_TYPE_I1:
5370                                 case MONO_TYPE_U1:
5371                                 case MONO_TYPE_I2:
5372                                 case MONO_TYPE_U2:
5373                                 case MONO_TYPE_I4:
5374                                 case MONO_TYPE_U4:
5375                                         ins->dreg = mono_alloc_ireg (cfg);
5376                                         ins->type = STACK_I4;
5377                                         break;
5378                                 case MONO_TYPE_I8:
5379                                 case MONO_TYPE_U8:
5380                                         ins->dreg = mono_alloc_lreg (cfg);
5381                                         ins->type = STACK_I8;
5382                                         break;
5383                                 case MONO_TYPE_I:
5384                                 case MONO_TYPE_U:
5385                                         ins->dreg = mono_alloc_ireg (cfg);
5386 #if SIZEOF_REGISTER == 8
5387                                         ins->type = STACK_I8;
5388 #else
5389                                         ins->type = STACK_I4;
5390 #endif
5391                                         break;
5392                                 case MONO_TYPE_R4:
5393                                 case MONO_TYPE_R8:
5394                                         ins->dreg = mono_alloc_freg (cfg);
5395                                         ins->type = STACK_R8;
5396                                         break;
5397                                 default:
5398                                         g_assert (mini_type_is_reference (fsig->params [0]));
5399                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5400                                         ins->type = STACK_OBJ;
5401                                         break;
5402                                 }
5403
5404                                 if (opcode == OP_LOADI8_MEMBASE)
5405                                         ins = mono_decompose_opcode (cfg, ins);
5406
5407                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5408
5409                                 return ins;
5410                         }
5411                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5412                         guint32 opcode = 0;
5413                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5414
5415                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5416                                 opcode = OP_STOREI1_MEMBASE_REG;
5417                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5418                                 opcode = OP_STOREI2_MEMBASE_REG;
5419                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5420                                 opcode = OP_STOREI4_MEMBASE_REG;
5421                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5422                                 opcode = OP_STOREI8_MEMBASE_REG;
5423                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5424                                 opcode = OP_STORER4_MEMBASE_REG;
5425                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5426                                 opcode = OP_STORER8_MEMBASE_REG;
5427                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5428                                 opcode = OP_STORE_MEMBASE_REG;
5429
5430                         if (opcode) {
5431                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5432
5433                                 MONO_INST_NEW (cfg, ins, opcode);
5434                                 ins->sreg1 = args [1]->dreg;
5435                                 ins->inst_destbasereg = args [0]->dreg;
5436                                 ins->inst_offset = 0;
5437                                 MONO_ADD_INS (cfg->cbb, ins);
5438
5439                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5440                                         ins = mono_decompose_opcode (cfg, ins);
5441
5442                                 return ins;
5443                         }
5444                 }
5445         } else if (cmethod->klass->image == mono_defaults.corlib &&
5446                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5447                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5448                 ins = NULL;
5449
5450 #if SIZEOF_REGISTER == 8
5451                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5452                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5453                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5454                                 ins->dreg = mono_alloc_preg (cfg);
5455                                 ins->sreg1 = args [0]->dreg;
5456                                 ins->type = STACK_I8;
5457                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5458                                 MONO_ADD_INS (cfg->cbb, ins);
5459                         } else {
5460                                 MonoInst *load_ins;
5461
5462                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5463
5464                                 /* 64 bit reads are already atomic */
5465                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5466                                 load_ins->dreg = mono_alloc_preg (cfg);
5467                                 load_ins->inst_basereg = args [0]->dreg;
5468                                 load_ins->inst_offset = 0;
5469                                 load_ins->type = STACK_I8;
5470                                 MONO_ADD_INS (cfg->cbb, load_ins);
5471
5472                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5473
5474                                 ins = load_ins;
5475                         }
5476                 }
5477 #endif
5478
5479                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5480                         MonoInst *ins_iconst;
5481                         guint32 opcode = 0;
5482
5483                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5484                                 opcode = OP_ATOMIC_ADD_I4;
5485                                 cfg->has_atomic_add_i4 = TRUE;
5486                         }
5487 #if SIZEOF_REGISTER == 8
5488                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5489                                 opcode = OP_ATOMIC_ADD_I8;
5490 #endif
5491                         if (opcode) {
5492                                 if (!mono_arch_opcode_supported (opcode))
5493                                         return NULL;
5494                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5495                                 ins_iconst->inst_c0 = 1;
5496                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5497                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5498
5499                                 MONO_INST_NEW (cfg, ins, opcode);
5500                                 ins->dreg = mono_alloc_ireg (cfg);
5501                                 ins->inst_basereg = args [0]->dreg;
5502                                 ins->inst_offset = 0;
5503                                 ins->sreg2 = ins_iconst->dreg;
5504                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5505                                 MONO_ADD_INS (cfg->cbb, ins);
5506                         }
5507                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5508                         MonoInst *ins_iconst;
5509                         guint32 opcode = 0;
5510
5511                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5512                                 opcode = OP_ATOMIC_ADD_I4;
5513                                 cfg->has_atomic_add_i4 = TRUE;
5514                         }
5515 #if SIZEOF_REGISTER == 8
5516                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5517                                 opcode = OP_ATOMIC_ADD_I8;
5518 #endif
5519                         if (opcode) {
5520                                 if (!mono_arch_opcode_supported (opcode))
5521                                         return NULL;
5522                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5523                                 ins_iconst->inst_c0 = -1;
5524                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5525                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5526
5527                                 MONO_INST_NEW (cfg, ins, opcode);
5528                                 ins->dreg = mono_alloc_ireg (cfg);
5529                                 ins->inst_basereg = args [0]->dreg;
5530                                 ins->inst_offset = 0;
5531                                 ins->sreg2 = ins_iconst->dreg;
5532                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5533                                 MONO_ADD_INS (cfg->cbb, ins);
5534                         }
5535                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5536                         guint32 opcode = 0;
5537
5538                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5539                                 opcode = OP_ATOMIC_ADD_I4;
5540                                 cfg->has_atomic_add_i4 = TRUE;
5541                         }
5542 #if SIZEOF_REGISTER == 8
5543                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5544                                 opcode = OP_ATOMIC_ADD_I8;
5545 #endif
5546                         if (opcode) {
5547                                 if (!mono_arch_opcode_supported (opcode))
5548                                         return NULL;
5549                                 MONO_INST_NEW (cfg, ins, opcode);
5550                                 ins->dreg = mono_alloc_ireg (cfg);
5551                                 ins->inst_basereg = args [0]->dreg;
5552                                 ins->inst_offset = 0;
5553                                 ins->sreg2 = args [1]->dreg;
5554                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5555                                 MONO_ADD_INS (cfg->cbb, ins);
5556                         }
5557                 }
5558                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5559                         MonoInst *f2i = NULL, *i2f;
5560                         guint32 opcode, f2i_opcode, i2f_opcode;
5561                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5562                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5563
5564                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5565                             fsig->params [0]->type == MONO_TYPE_R4) {
5566                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5567                                 f2i_opcode = OP_MOVE_F_TO_I4;
5568                                 i2f_opcode = OP_MOVE_I4_TO_F;
5569                                 cfg->has_atomic_exchange_i4 = TRUE;
5570                         }
5571 #if SIZEOF_REGISTER == 8
5572                         else if (is_ref ||
5573                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5574                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5575                                  fsig->params [0]->type == MONO_TYPE_I) {
5576                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5577                                 f2i_opcode = OP_MOVE_F_TO_I8;
5578                                 i2f_opcode = OP_MOVE_I8_TO_F;
5579                         }
5580 #else
5581                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5582                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5583                                 cfg->has_atomic_exchange_i4 = TRUE;
5584                         }
5585 #endif
5586                         else
5587                                 return NULL;
5588
5589                         if (!mono_arch_opcode_supported (opcode))
5590                                 return NULL;
5591
5592                         if (is_float) {
5593                                 /* TODO: Decompose these opcodes instead of bailing here. */
5594                                 if (COMPILE_SOFT_FLOAT (cfg))
5595                                         return NULL;
5596
5597                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5598                                 f2i->dreg = mono_alloc_ireg (cfg);
5599                                 f2i->sreg1 = args [1]->dreg;
5600                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5601                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5602                                 MONO_ADD_INS (cfg->cbb, f2i);
5603                         }
5604
5605                         MONO_INST_NEW (cfg, ins, opcode);
5606                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5607                         ins->inst_basereg = args [0]->dreg;
5608                         ins->inst_offset = 0;
5609                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5610                         MONO_ADD_INS (cfg->cbb, ins);
5611
5612                         switch (fsig->params [0]->type) {
5613                         case MONO_TYPE_I4:
5614                                 ins->type = STACK_I4;
5615                                 break;
5616                         case MONO_TYPE_I8:
5617                                 ins->type = STACK_I8;
5618                                 break;
5619                         case MONO_TYPE_I:
5620 #if SIZEOF_REGISTER == 8
5621                                 ins->type = STACK_I8;
5622 #else
5623                                 ins->type = STACK_I4;
5624 #endif
5625                                 break;
5626                         case MONO_TYPE_R4:
5627                         case MONO_TYPE_R8:
5628                                 ins->type = STACK_R8;
5629                                 break;
5630                         default:
5631                                 g_assert (mini_type_is_reference (fsig->params [0]));
5632                                 ins->type = STACK_OBJ;
5633                                 break;
5634                         }
5635
5636                         if (is_float) {
5637                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5638                                 i2f->dreg = mono_alloc_freg (cfg);
5639                                 i2f->sreg1 = ins->dreg;
5640                                 i2f->type = STACK_R8;
5641                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5642                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5643                                 MONO_ADD_INS (cfg->cbb, i2f);
5644
5645                                 ins = i2f;
5646                         }
5647
5648                         if (cfg->gen_write_barriers && is_ref)
5649                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5650                 }
5651                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5652                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5653                         guint32 opcode, f2i_opcode, i2f_opcode;
5654                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5655                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5656
5657                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5658                             fsig->params [1]->type == MONO_TYPE_R4) {
5659                                 opcode = OP_ATOMIC_CAS_I4;
5660                                 f2i_opcode = OP_MOVE_F_TO_I4;
5661                                 i2f_opcode = OP_MOVE_I4_TO_F;
5662                                 cfg->has_atomic_cas_i4 = TRUE;
5663                         }
5664 #if SIZEOF_REGISTER == 8
5665                         else if (is_ref ||
5666                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5667                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5668                                  fsig->params [1]->type == MONO_TYPE_I) {
5669                                 opcode = OP_ATOMIC_CAS_I8;
5670                                 f2i_opcode = OP_MOVE_F_TO_I8;
5671                                 i2f_opcode = OP_MOVE_I8_TO_F;
5672                         }
5673 #else
5674                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5675                                 opcode = OP_ATOMIC_CAS_I4;
5676                                 cfg->has_atomic_cas_i4 = TRUE;
5677                         }
5678 #endif
5679                         else
5680                                 return NULL;
5681
5682                         if (!mono_arch_opcode_supported (opcode))
5683                                 return NULL;
5684
5685                         if (is_float) {
5686                                 /* TODO: Decompose these opcodes instead of bailing here. */
5687                                 if (COMPILE_SOFT_FLOAT (cfg))
5688                                         return NULL;
5689
5690                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5691                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5692                                 f2i_new->sreg1 = args [1]->dreg;
5693                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5694                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5695                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5696
5697                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5698                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5699                                 f2i_cmp->sreg1 = args [2]->dreg;
5700                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5701                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5702                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5703                         }
5704
5705                         MONO_INST_NEW (cfg, ins, opcode);
5706                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5707                         ins->sreg1 = args [0]->dreg;
5708                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5709                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5710                         MONO_ADD_INS (cfg->cbb, ins);
5711
5712                         switch (fsig->params [1]->type) {
5713                         case MONO_TYPE_I4:
5714                                 ins->type = STACK_I4;
5715                                 break;
5716                         case MONO_TYPE_I8:
5717                                 ins->type = STACK_I8;
5718                                 break;
5719                         case MONO_TYPE_I:
5720 #if SIZEOF_REGISTER == 8
5721                                 ins->type = STACK_I8;
5722 #else
5723                                 ins->type = STACK_I4;
5724 #endif
5725                                 break;
5726                         case MONO_TYPE_R4:
5727                                 ins->type = cfg->r4_stack_type;
5728                                 break;
5729                         case MONO_TYPE_R8:
5730                                 ins->type = STACK_R8;
5731                                 break;
5732                         default:
5733                                 g_assert (mini_type_is_reference (fsig->params [1]));
5734                                 ins->type = STACK_OBJ;
5735                                 break;
5736                         }
5737
5738                         if (is_float) {
5739                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5740                                 i2f->dreg = mono_alloc_freg (cfg);
5741                                 i2f->sreg1 = ins->dreg;
5742                                 i2f->type = STACK_R8;
5743                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5744                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5745                                 MONO_ADD_INS (cfg->cbb, i2f);
5746
5747                                 ins = i2f;
5748                         }
5749
5750                         if (cfg->gen_write_barriers && is_ref)
5751                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5752                 }
5753                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5754                          fsig->params [1]->type == MONO_TYPE_I4) {
5755                         MonoInst *cmp, *ceq;
5756
5757                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5758                                 return NULL;
5759
5760                         /* int32 r = CAS (location, value, comparand); */
5761                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5762                         ins->dreg = alloc_ireg (cfg);
5763                         ins->sreg1 = args [0]->dreg;
5764                         ins->sreg2 = args [1]->dreg;
5765                         ins->sreg3 = args [2]->dreg;
5766                         ins->type = STACK_I4;
5767                         MONO_ADD_INS (cfg->cbb, ins);
5768
5769                         /* bool result = r == comparand; */
5770                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5771                         cmp->sreg1 = ins->dreg;
5772                         cmp->sreg2 = args [2]->dreg;
5773                         cmp->type = STACK_I4;
5774                         MONO_ADD_INS (cfg->cbb, cmp);
5775
5776                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5777                         ceq->dreg = alloc_ireg (cfg);
5778                         ceq->type = STACK_I4;
5779                         MONO_ADD_INS (cfg->cbb, ceq);
5780
5781                         /* *success = result; */
5782                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5783
5784                         cfg->has_atomic_cas_i4 = TRUE;
5785                 }
5786                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5787                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5788
5789                 if (ins)
5790                         return ins;
5791         } else if (cmethod->klass->image == mono_defaults.corlib &&
5792                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5793                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5794                 ins = NULL;
5795
5796                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5797                         guint32 opcode = 0;
5798                         MonoType *t = fsig->params [0];
5799                         gboolean is_ref;
5800                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5801
5802                         g_assert (t->byref);
5803                         /* t is a byref type, so the reference check is more complicated */
5804                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5805                         if (t->type == MONO_TYPE_I1)
5806                                 opcode = OP_ATOMIC_LOAD_I1;
5807                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5808                                 opcode = OP_ATOMIC_LOAD_U1;
5809                         else if (t->type == MONO_TYPE_I2)
5810                                 opcode = OP_ATOMIC_LOAD_I2;
5811                         else if (t->type == MONO_TYPE_U2)
5812                                 opcode = OP_ATOMIC_LOAD_U2;
5813                         else if (t->type == MONO_TYPE_I4)
5814                                 opcode = OP_ATOMIC_LOAD_I4;
5815                         else if (t->type == MONO_TYPE_U4)
5816                                 opcode = OP_ATOMIC_LOAD_U4;
5817                         else if (t->type == MONO_TYPE_R4)
5818                                 opcode = OP_ATOMIC_LOAD_R4;
5819                         else if (t->type == MONO_TYPE_R8)
5820                                 opcode = OP_ATOMIC_LOAD_R8;
5821 #if SIZEOF_REGISTER == 8
5822                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5823                                 opcode = OP_ATOMIC_LOAD_I8;
5824                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5825                                 opcode = OP_ATOMIC_LOAD_U8;
5826 #else
5827                         else if (t->type == MONO_TYPE_I)
5828                                 opcode = OP_ATOMIC_LOAD_I4;
5829                         else if (is_ref || t->type == MONO_TYPE_U)
5830                                 opcode = OP_ATOMIC_LOAD_U4;
5831 #endif
5832
5833                         if (opcode) {
5834                                 if (!mono_arch_opcode_supported (opcode))
5835                                         return NULL;
5836
5837                                 MONO_INST_NEW (cfg, ins, opcode);
5838                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5839                                 ins->sreg1 = args [0]->dreg;
5840                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5841                                 MONO_ADD_INS (cfg->cbb, ins);
5842
5843                                 switch (t->type) {
5844                                 case MONO_TYPE_BOOLEAN:
5845                                 case MONO_TYPE_I1:
5846                                 case MONO_TYPE_U1:
5847                                 case MONO_TYPE_I2:
5848                                 case MONO_TYPE_U2:
5849                                 case MONO_TYPE_I4:
5850                                 case MONO_TYPE_U4:
5851                                         ins->type = STACK_I4;
5852                                         break;
5853                                 case MONO_TYPE_I8:
5854                                 case MONO_TYPE_U8:
5855                                         ins->type = STACK_I8;
5856                                         break;
5857                                 case MONO_TYPE_I:
5858                                 case MONO_TYPE_U:
5859 #if SIZEOF_REGISTER == 8
5860                                         ins->type = STACK_I8;
5861 #else
5862                                         ins->type = STACK_I4;
5863 #endif
5864                                         break;
5865                                 case MONO_TYPE_R4:
5866                                         ins->type = cfg->r4_stack_type;
5867                                         break;
5868                                 case MONO_TYPE_R8:
5869                                         ins->type = STACK_R8;
5870                                         break;
5871                                 default:
5872                                         g_assert (is_ref);
5873                                         ins->type = STACK_OBJ;
5874                                         break;
5875                                 }
5876                         }
5877                 }
5878
5879                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5880                         guint32 opcode = 0;
5881                         MonoType *t = fsig->params [0];
5882                         gboolean is_ref;
5883
5884                         g_assert (t->byref);
5885                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5886                         if (t->type == MONO_TYPE_I1)
5887                                 opcode = OP_ATOMIC_STORE_I1;
5888                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5889                                 opcode = OP_ATOMIC_STORE_U1;
5890                         else if (t->type == MONO_TYPE_I2)
5891                                 opcode = OP_ATOMIC_STORE_I2;
5892                         else if (t->type == MONO_TYPE_U2)
5893                                 opcode = OP_ATOMIC_STORE_U2;
5894                         else if (t->type == MONO_TYPE_I4)
5895                                 opcode = OP_ATOMIC_STORE_I4;
5896                         else if (t->type == MONO_TYPE_U4)
5897                                 opcode = OP_ATOMIC_STORE_U4;
5898                         else if (t->type == MONO_TYPE_R4)
5899                                 opcode = OP_ATOMIC_STORE_R4;
5900                         else if (t->type == MONO_TYPE_R8)
5901                                 opcode = OP_ATOMIC_STORE_R8;
5902 #if SIZEOF_REGISTER == 8
5903                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5904                                 opcode = OP_ATOMIC_STORE_I8;
5905                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5906                                 opcode = OP_ATOMIC_STORE_U8;
5907 #else
5908                         else if (t->type == MONO_TYPE_I)
5909                                 opcode = OP_ATOMIC_STORE_I4;
5910                         else if (is_ref || t->type == MONO_TYPE_U)
5911                                 opcode = OP_ATOMIC_STORE_U4;
5912 #endif
5913
5914                         if (opcode) {
5915                                 if (!mono_arch_opcode_supported (opcode))
5916                                         return NULL;
5917
5918                                 MONO_INST_NEW (cfg, ins, opcode);
5919                                 ins->dreg = args [0]->dreg;
5920                                 ins->sreg1 = args [1]->dreg;
5921                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5922                                 MONO_ADD_INS (cfg->cbb, ins);
5923
5924                                 if (cfg->gen_write_barriers && is_ref)
5925                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5926                         }
5927                 }
5928
5929                 if (ins)
5930                         return ins;
5931         } else if (cmethod->klass->image == mono_defaults.corlib &&
5932                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5933                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5934                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5935                         if (should_insert_brekpoint (cfg->method)) {
5936                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5937                         } else {
5938                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5939                                 MONO_ADD_INS (cfg->cbb, ins);
5940                         }
5941                         return ins;
5942                 }
5943         } else if (cmethod->klass->image == mono_defaults.corlib &&
5944                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5945                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5946                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5947 #ifdef TARGET_WIN32
5948                         EMIT_NEW_ICONST (cfg, ins, 1);
5949 #else
5950                         EMIT_NEW_ICONST (cfg, ins, 0);
5951 #endif
5952                 }
5953         } else if (cmethod->klass->image == mono_defaults.corlib &&
5954                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5955                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5956                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5957                         /* No stack walks are currently available, so implement this as an intrinsic */
5958                         MonoInst *assembly_ins;
5959
5960                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5961                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5962                         return ins;
5963                 }
5964         } else if (cmethod->klass->image == mono_defaults.corlib &&
5965                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5966                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5967                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5968                         /* No stack walks are currently available, so implement this as an intrinsic */
5969                         MonoInst *method_ins;
5970                         MonoMethod *declaring = cfg->method;
5971
5972                         /* This returns the declaring generic method */
5973                         if (declaring->is_inflated)
5974                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5975                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5976                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5977                         cfg->no_inline = TRUE;
5978                         if (cfg->method != cfg->current_method)
5979                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5980                         return ins;
5981                 }
5982         } else if (cmethod->klass == mono_defaults.math_class) {
5983                 /*
5984                  * There is general branchless code for Min/Max, but it does not work for
5985                  * all inputs:
5986                  * http://everything2.com/?node_id=1051618
5987                  */
5988         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5989                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5990                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5991                 ins->dreg = alloc_preg (cfg);
5992                 ins->type = STACK_I4;
5993                 MONO_ADD_INS (cfg->cbb, ins);
5994                 return ins;
5995         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5996                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5997                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5998                                 !strcmp (cmethod->klass->name, "Selector")) ||
5999                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
6000                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
6001                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6002                                 !strcmp (cmethod->klass->name, "Selector"))
6003                            ) {
6004                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
6005                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6006                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6007                     cfg->compile_aot) {
6008                         MonoInst *pi;
6009                         MonoJumpInfoToken *ji;
6010                         char *s;
6011
6012                         if (args [0]->opcode == OP_GOT_ENTRY) {
6013                                 pi = (MonoInst *)args [0]->inst_p1;
6014                                 g_assert (pi->opcode == OP_PATCH_INFO);
6015                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6016                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6017                         } else {
6018                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6019                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6020                         }
6021
6022                         NULLIFY_INS (args [0]);
6023
6024                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6025                         return_val_if_nok (&cfg->error, NULL);
6026
6027                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6028                         ins->dreg = mono_alloc_ireg (cfg);
6029                         // FIXME: Leaks
6030                         ins->inst_p0 = s;
6031                         MONO_ADD_INS (cfg->cbb, ins);
6032                         return ins;
6033                 }
6034         }
6035
6036 #ifdef MONO_ARCH_SIMD_INTRINSICS
6037         if (cfg->opt & MONO_OPT_SIMD) {
6038                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6039                 if (ins)
6040                         return ins;
6041         }
6042 #endif
6043
6044         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6045         if (ins)
6046                 return ins;
6047
6048         if (COMPILE_LLVM (cfg)) {
6049                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6050                 if (ins)
6051                         return ins;
6052         }
6053
6054         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6055 }
6056
6057 /*
6058  * This entry point could be used later for arbitrary method
6059  * redirection.
6060  */
6061 inline static MonoInst*
6062 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6063                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6064 {
6065         if (method->klass == mono_defaults.string_class) {
6066                 /* managed string allocation support */
6067                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6068                         MonoInst *iargs [2];
6069                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6070                         MonoMethod *managed_alloc = NULL;
6071
6072                         g_assert (vtable); /*Should not fail since it System.String*/
6073 #ifndef MONO_CROSS_COMPILE
6074                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6075 #endif
6076                         if (!managed_alloc)
6077                                 return NULL;
6078                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6079                         iargs [1] = args [0];
6080                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6081                 }
6082         }
6083         return NULL;
6084 }
6085
6086 static void
6087 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6088 {
6089         MonoInst *store, *temp;
6090         int i;
6091
6092         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6093                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6094
6095                 /*
6096                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6097                  * would be different than the MonoInst's used to represent arguments, and
6098                  * the ldelema implementation can't deal with that.
6099                  * Solution: When ldelema is used on an inline argument, create a var for
6100                  * it, emit ldelema on that var, and emit the saving code below in
6101                  * inline_method () if needed.
6102                  */
6103                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6104                 cfg->args [i] = temp;
6105                 /* This uses cfg->args [i] which is set by the preceeding line */
6106                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6107                 store->cil_code = sp [0]->cil_code;
6108                 sp++;
6109         }
6110 }
6111
6112 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6113 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6114
6115 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6116 static gboolean
6117 check_inline_called_method_name_limit (MonoMethod *called_method)
6118 {
6119         int strncmp_result;
6120         static const char *limit = NULL;
6121
6122         if (limit == NULL) {
6123                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6124
6125                 if (limit_string != NULL)
6126                         limit = limit_string;
6127                 else
6128                         limit = "";
6129         }
6130
6131         if (limit [0] != '\0') {
6132                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6133
6134                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6135                 g_free (called_method_name);
6136
6137                 //return (strncmp_result <= 0);
6138                 return (strncmp_result == 0);
6139         } else {
6140                 return TRUE;
6141         }
6142 }
6143 #endif
6144
6145 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6146 static gboolean
6147 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6148 {
6149         int strncmp_result;
6150         static const char *limit = NULL;
6151
6152         if (limit == NULL) {
6153                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6154                 if (limit_string != NULL) {
6155                         limit = limit_string;
6156                 } else {
6157                         limit = "";
6158                 }
6159         }
6160
6161         if (limit [0] != '\0') {
6162                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6163
6164                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6165                 g_free (caller_method_name);
6166
6167                 //return (strncmp_result <= 0);
6168                 return (strncmp_result == 0);
6169         } else {
6170                 return TRUE;
6171         }
6172 }
6173 #endif
6174
6175 static void
6176 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6177 {
6178         static double r8_0 = 0.0;
6179         static float r4_0 = 0.0;
6180         MonoInst *ins;
6181         int t;
6182
6183         rtype = mini_get_underlying_type (rtype);
6184         t = rtype->type;
6185
6186         if (rtype->byref) {
6187                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6188         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6189                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6190         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6191                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6192         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6193                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6194                 ins->type = STACK_R4;
6195                 ins->inst_p0 = (void*)&r4_0;
6196                 ins->dreg = dreg;
6197                 MONO_ADD_INS (cfg->cbb, ins);
6198         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6199                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6200                 ins->type = STACK_R8;
6201                 ins->inst_p0 = (void*)&r8_0;
6202                 ins->dreg = dreg;
6203                 MONO_ADD_INS (cfg->cbb, ins);
6204         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6205                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6206                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6207         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6208                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6209         } else {
6210                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6211         }
6212 }
6213
6214 static void
6215 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6216 {
6217         int t;
6218
6219         rtype = mini_get_underlying_type (rtype);
6220         t = rtype->type;
6221
6222         if (rtype->byref) {
6223                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6224         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6225                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6226         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6227                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6228         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6229                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6230         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6231                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6232         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6233                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6234                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6235         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6236                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6237         } else {
6238                 emit_init_rvar (cfg, dreg, rtype);
6239         }
6240 }
6241
6242 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6243 static void
6244 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6245 {
6246         MonoInst *var = cfg->locals [local];
6247         if (COMPILE_SOFT_FLOAT (cfg)) {
6248                 MonoInst *store;
6249                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6250                 emit_init_rvar (cfg, reg, type);
6251                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6252         } else {
6253                 if (init)
6254                         emit_init_rvar (cfg, var->dreg, type);
6255                 else
6256                         emit_dummy_init_rvar (cfg, var->dreg, type);
6257         }
6258 }
6259
6260 int
6261 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6262 {
6263         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6264 }
6265
6266 /*
6267  * inline_method:
6268  *
6269  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6270  */
6271 static int
6272 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6273                guchar *ip, guint real_offset, gboolean inline_always)
6274 {
6275         MonoError error;
6276         MonoInst *ins, *rvar = NULL;
6277         MonoMethodHeader *cheader;
6278         MonoBasicBlock *ebblock, *sbblock;
6279         int i, costs;
6280         MonoMethod *prev_inlined_method;
6281         MonoInst **prev_locals, **prev_args;
6282         MonoType **prev_arg_types;
6283         guint prev_real_offset;
6284         GHashTable *prev_cbb_hash;
6285         MonoBasicBlock **prev_cil_offset_to_bb;
6286         MonoBasicBlock *prev_cbb;
6287         const unsigned char *prev_ip;
6288         unsigned char *prev_cil_start;
6289         guint32 prev_cil_offset_to_bb_len;
6290         MonoMethod *prev_current_method;
6291         MonoGenericContext *prev_generic_context;
6292         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6293
6294         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6295
6296 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6297         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6298                 return 0;
6299 #endif
6300 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6301         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6302                 return 0;
6303 #endif
6304
6305         if (!fsig)
6306                 fsig = mono_method_signature (cmethod);
6307
6308         if (cfg->verbose_level > 2)
6309                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6310
6311         if (!cmethod->inline_info) {
6312                 cfg->stat_inlineable_methods++;
6313                 cmethod->inline_info = 1;
6314         }
6315
6316         /* allocate local variables */
6317         cheader = mono_method_get_header_checked (cmethod, &error);
6318         if (!cheader) {
6319                 if (inline_always) {
6320                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6321                         mono_error_move (&cfg->error, &error);
6322                 } else {
6323                         mono_error_cleanup (&error);
6324                 }
6325                 return 0;
6326         }
6327
6328         /*Must verify before creating locals as it can cause the JIT to assert.*/
6329         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6330                 mono_metadata_free_mh (cheader);
6331                 return 0;
6332         }
6333
6334         /* allocate space to store the return value */
6335         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6336                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6337         }
6338
6339         prev_locals = cfg->locals;
6340         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6341         for (i = 0; i < cheader->num_locals; ++i)
6342                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6343
6344         /* allocate start and end blocks */
6345         /* This is needed so if the inline is aborted, we can clean up */
6346         NEW_BBLOCK (cfg, sbblock);
6347         sbblock->real_offset = real_offset;
6348
6349         NEW_BBLOCK (cfg, ebblock);
6350         ebblock->block_num = cfg->num_bblocks++;
6351         ebblock->real_offset = real_offset;
6352
6353         prev_args = cfg->args;
6354         prev_arg_types = cfg->arg_types;
6355         prev_inlined_method = cfg->inlined_method;
6356         cfg->inlined_method = cmethod;
6357         cfg->ret_var_set = FALSE;
6358         cfg->inline_depth ++;
6359         prev_real_offset = cfg->real_offset;
6360         prev_cbb_hash = cfg->cbb_hash;
6361         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6362         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6363         prev_cil_start = cfg->cil_start;
6364         prev_ip = cfg->ip;
6365         prev_cbb = cfg->cbb;
6366         prev_current_method = cfg->current_method;
6367         prev_generic_context = cfg->generic_context;
6368         prev_ret_var_set = cfg->ret_var_set;
6369         prev_disable_inline = cfg->disable_inline;
6370
6371         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6372                 virtual_ = TRUE;
6373
6374         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6375
6376         ret_var_set = cfg->ret_var_set;
6377
6378         cfg->inlined_method = prev_inlined_method;
6379         cfg->real_offset = prev_real_offset;
6380         cfg->cbb_hash = prev_cbb_hash;
6381         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6382         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6383         cfg->cil_start = prev_cil_start;
6384         cfg->ip = prev_ip;
6385         cfg->locals = prev_locals;
6386         cfg->args = prev_args;
6387         cfg->arg_types = prev_arg_types;
6388         cfg->current_method = prev_current_method;
6389         cfg->generic_context = prev_generic_context;
6390         cfg->ret_var_set = prev_ret_var_set;
6391         cfg->disable_inline = prev_disable_inline;
6392         cfg->inline_depth --;
6393
6394         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6395                 if (cfg->verbose_level > 2)
6396                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6397
6398                 cfg->stat_inlined_methods++;
6399
6400                 /* always add some code to avoid block split failures */
6401                 MONO_INST_NEW (cfg, ins, OP_NOP);
6402                 MONO_ADD_INS (prev_cbb, ins);
6403
6404                 prev_cbb->next_bb = sbblock;
6405                 link_bblock (cfg, prev_cbb, sbblock);
6406
6407                 /*
6408                  * Get rid of the begin and end bblocks if possible to aid local
6409                  * optimizations.
6410                  */
6411                 if (prev_cbb->out_count == 1)
6412                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6413
6414                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6415                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6416
6417                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6418                         MonoBasicBlock *prev = ebblock->in_bb [0];
6419
6420                         if (prev->next_bb == ebblock) {
6421                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6422                                 cfg->cbb = prev;
6423                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6424                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6425                                         cfg->cbb = prev_cbb;
6426                                 }
6427                         } else {
6428                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6429                                 cfg->cbb = ebblock;
6430                         }
6431                 } else {
6432                         /*
6433                          * Its possible that the rvar is set in some prev bblock, but not in others.
6434                          * (#1835).
6435                          */
6436                         if (rvar) {
6437                                 MonoBasicBlock *bb;
6438
6439                                 for (i = 0; i < ebblock->in_count; ++i) {
6440                                         bb = ebblock->in_bb [i];
6441
6442                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6443                                                 cfg->cbb = bb;
6444
6445                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6446                                         }
6447                                 }
6448                         }
6449
6450                         cfg->cbb = ebblock;
6451                 }
6452
6453                 if (rvar) {
6454                         /*
6455                          * If the inlined method contains only a throw, then the ret var is not
6456                          * set, so set it to a dummy value.
6457                          */
6458                         if (!ret_var_set)
6459                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6460
6461                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6462                         *sp++ = ins;
6463                 }
6464                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6465                 return costs + 1;
6466         } else {
6467                 if (cfg->verbose_level > 2)
6468                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6469                 cfg->exception_type = MONO_EXCEPTION_NONE;
6470
6471                 /* This gets rid of the newly added bblocks */
6472                 cfg->cbb = prev_cbb;
6473         }
6474         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6475         return 0;
6476 }
6477
6478 /*
6479  * Some of these comments may well be out-of-date.
6480  * Design decisions: we do a single pass over the IL code (and we do bblock
6481  * splitting/merging in the few cases when it's required: a back jump to an IL
6482  * address that was not already seen as bblock starting point).
6483  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6484  * Complex operations are decomposed in simpler ones right away. We need to let the
6485  * arch-specific code peek and poke inside this process somehow (except when the
6486  * optimizations can take advantage of the full semantic info of coarse opcodes).
6487  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6488  * MonoInst->opcode initially is the IL opcode or some simplification of that
6489  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6490  * opcode with value bigger than OP_LAST.
6491  * At this point the IR can be handed over to an interpreter, a dumb code generator
6492  * or to the optimizing code generator that will translate it to SSA form.
6493  *
6494  * Profiling directed optimizations.
6495  * We may compile by default with few or no optimizations and instrument the code
6496  * or the user may indicate what methods to optimize the most either in a config file
6497  * or through repeated runs where the compiler applies offline the optimizations to
6498  * each method and then decides if it was worth it.
6499  */
6500
6501 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6502 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6503 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6504 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6505 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6506 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6507 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6508 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6509
6510 /* offset from br.s -> br like opcodes */
6511 #define BIG_BRANCH_OFFSET 13
6512
6513 static gboolean
6514 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6515 {
6516         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6517
6518         return b == NULL || b == bb;
6519 }
6520
6521 static int
6522 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6523 {
6524         unsigned char *ip = start;
6525         unsigned char *target;
6526         int i;
6527         guint cli_addr;
6528         MonoBasicBlock *bblock;
6529         const MonoOpcode *opcode;
6530
6531         while (ip < end) {
6532                 cli_addr = ip - start;
6533                 i = mono_opcode_value ((const guint8 **)&ip, end);
6534                 if (i < 0)
6535                         UNVERIFIED;
6536                 opcode = &mono_opcodes [i];
6537                 switch (opcode->argument) {
6538                 case MonoInlineNone:
6539                         ip++;
6540                         break;
6541                 case MonoInlineString:
6542                 case MonoInlineType:
6543                 case MonoInlineField:
6544                 case MonoInlineMethod:
6545                 case MonoInlineTok:
6546                 case MonoInlineSig:
6547                 case MonoShortInlineR:
6548                 case MonoInlineI:
6549                         ip += 5;
6550                         break;
6551                 case MonoInlineVar:
6552                         ip += 3;
6553                         break;
6554                 case MonoShortInlineVar:
6555                 case MonoShortInlineI:
6556                         ip += 2;
6557                         break;
6558                 case MonoShortInlineBrTarget:
6559                         target = start + cli_addr + 2 + (signed char)ip [1];
6560                         GET_BBLOCK (cfg, bblock, target);
6561                         ip += 2;
6562                         if (ip < end)
6563                                 GET_BBLOCK (cfg, bblock, ip);
6564                         break;
6565                 case MonoInlineBrTarget:
6566                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6567                         GET_BBLOCK (cfg, bblock, target);
6568                         ip += 5;
6569                         if (ip < end)
6570                                 GET_BBLOCK (cfg, bblock, ip);
6571                         break;
6572                 case MonoInlineSwitch: {
6573                         guint32 n = read32 (ip + 1);
6574                         guint32 j;
6575                         ip += 5;
6576                         cli_addr += 5 + 4 * n;
6577                         target = start + cli_addr;
6578                         GET_BBLOCK (cfg, bblock, target);
6579
6580                         for (j = 0; j < n; ++j) {
6581                                 target = start + cli_addr + (gint32)read32 (ip);
6582                                 GET_BBLOCK (cfg, bblock, target);
6583                                 ip += 4;
6584                         }
6585                         break;
6586                 }
6587                 case MonoInlineR:
6588                 case MonoInlineI8:
6589                         ip += 9;
6590                         break;
6591                 default:
6592                         g_assert_not_reached ();
6593                 }
6594
6595                 if (i == CEE_THROW) {
6596                         unsigned char *bb_start = ip - 1;
6597
6598                         /* Find the start of the bblock containing the throw */
6599                         bblock = NULL;
6600                         while ((bb_start >= start) && !bblock) {
6601                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6602                                 bb_start --;
6603                         }
6604                         if (bblock)
6605                                 bblock->out_of_line = 1;
6606                 }
6607         }
6608         return 0;
6609 unverified:
6610 exception_exit:
6611         *pos = ip;
6612         return 1;
6613 }
6614
6615 static inline MonoMethod *
6616 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6617 {
6618         MonoMethod *method;
6619
6620         error_init (error);
6621
6622         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6623                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6624                 if (context) {
6625                         method = mono_class_inflate_generic_method_checked (method, context, error);
6626                 }
6627         } else {
6628                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6629         }
6630
6631         return method;
6632 }
6633
6634 static inline MonoMethod *
6635 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6636 {
6637         MonoError error;
6638         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6639
6640         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6641                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6642                 method = NULL;
6643         }
6644
6645         if (!method && !cfg)
6646                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6647
6648         return method;
6649 }
6650
6651 MonoClass*
6652 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
6653 {
6654         MonoError error;
6655         MonoClass *klass;
6656
6657         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6658                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
6659                 if (context) {
6660                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
6661                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6662                 }
6663         } else {
6664                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
6665                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6666         }
6667         if (klass)
6668                 mono_class_init (klass);
6669         return klass;
6670 }
6671
6672 static inline MonoMethodSignature*
6673 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6674 {
6675         MonoMethodSignature *fsig;
6676
6677         error_init (error);
6678         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6679                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6680         } else {
6681                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6682                 return_val_if_nok (error, NULL);
6683         }
6684         if (context) {
6685                 fsig = mono_inflate_generic_signature(fsig, context, error);
6686         }
6687         return fsig;
6688 }
6689
6690 static MonoMethod*
6691 throw_exception (void)
6692 {
6693         static MonoMethod *method = NULL;
6694
6695         if (!method) {
6696                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6697                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6698         }
6699         g_assert (method);
6700         return method;
6701 }
6702
6703 static void
6704 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6705 {
6706         MonoMethod *thrower = throw_exception ();
6707         MonoInst *args [1];
6708
6709         EMIT_NEW_PCONST (cfg, args [0], ex);
6710         mono_emit_method_call (cfg, thrower, args, NULL);
6711 }
6712
6713 /*
6714  * Return the original method is a wrapper is specified. We can only access
6715  * the custom attributes from the original method.
6716  */
6717 static MonoMethod*
6718 get_original_method (MonoMethod *method)
6719 {
6720         if (method->wrapper_type == MONO_WRAPPER_NONE)
6721                 return method;
6722
6723         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6724         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6725                 return NULL;
6726
6727         /* in other cases we need to find the original method */
6728         return mono_marshal_method_from_wrapper (method);
6729 }
6730
6731 static void
6732 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6733 {
6734         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6735         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6736         if (ex)
6737                 emit_throw_exception (cfg, ex);
6738 }
6739
6740 static void
6741 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6742 {
6743         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6744         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6745         if (ex)
6746                 emit_throw_exception (cfg, ex);
6747 }
6748
6749 /*
6750  * Check that the IL instructions at ip are the array initialization
6751  * sequence and return the pointer to the data and the size.
6752  */
6753 static const char*
6754 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6755 {
6756         /*
6757          * newarr[System.Int32]
6758          * dup
6759          * ldtoken field valuetype ...
6760          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6761          */
6762         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6763                 MonoError error;
6764                 guint32 token = read32 (ip + 7);
6765                 guint32 field_token = read32 (ip + 2);
6766                 guint32 field_index = field_token & 0xffffff;
6767                 guint32 rva;
6768                 const char *data_ptr;
6769                 int size = 0;
6770                 MonoMethod *cmethod;
6771                 MonoClass *dummy_class;
6772                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6773                 int dummy_align;
6774
6775                 if (!field) {
6776                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6777                         return NULL;
6778                 }
6779
6780                 *out_field_token = field_token;
6781
6782                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6783                 if (!cmethod)
6784                         return NULL;
6785                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6786                         return NULL;
6787                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6788                 case MONO_TYPE_I1:
6789                 case MONO_TYPE_U1:
6790                         size = 1; break;
6791                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6792 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6793                 case MONO_TYPE_I2:
6794                 case MONO_TYPE_U2:
6795                         size = 2; break;
6796                 case MONO_TYPE_I4:
6797                 case MONO_TYPE_U4:
6798                 case MONO_TYPE_R4:
6799                         size = 4; break;
6800                 case MONO_TYPE_R8:
6801                 case MONO_TYPE_I8:
6802                 case MONO_TYPE_U8:
6803                         size = 8; break;
6804 #endif
6805                 default:
6806                         return NULL;
6807                 }
6808                 size *= len;
6809                 if (size > mono_type_size (field->type, &dummy_align))
6810                     return NULL;
6811                 *out_size = size;
6812                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6813                 if (!image_is_dynamic (method->klass->image)) {
6814                         field_index = read32 (ip + 2) & 0xffffff;
6815                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6816                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6817                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6818                         /* for aot code we do the lookup on load */
6819                         if (aot && data_ptr)
6820                                 return (const char *)GUINT_TO_POINTER (rva);
6821                 } else {
6822                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6823                         g_assert (!aot);
6824                         data_ptr = mono_field_get_data (field);
6825                 }
6826                 return data_ptr;
6827         }
6828         return NULL;
6829 }
6830
6831 static void
6832 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6833 {
6834         MonoError error;
6835         char *method_fname = mono_method_full_name (method, TRUE);
6836         char *method_code;
6837         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6838
6839         if (!header) {
6840                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6841                 mono_error_cleanup (&error);
6842         } else if (header->code_size == 0)
6843                 method_code = g_strdup ("method body is empty.");
6844         else
6845                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6846         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6847         g_free (method_fname);
6848         g_free (method_code);
6849         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6850 }
6851
6852 static void
6853 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6854 {
6855         MonoInst *ins;
6856         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6857         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6858                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6859                 /* Optimize reg-reg moves away */
6860                 /*
6861                  * Can't optimize other opcodes, since sp[0] might point to
6862                  * the last ins of a decomposed opcode.
6863                  */
6864                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6865         } else {
6866                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6867         }
6868 }
6869
6870 /*
6871  * ldloca inhibits many optimizations so try to get rid of it in common
6872  * cases.
6873  */
6874 static inline unsigned char *
6875 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6876 {
6877         int local, token;
6878         MonoClass *klass;
6879         MonoType *type;
6880
6881         if (size == 1) {
6882                 local = ip [1];
6883                 ip += 2;
6884         } else {
6885                 local = read16 (ip + 2);
6886                 ip += 4;
6887         }
6888
6889         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6890                 /* From the INITOBJ case */
6891                 token = read32 (ip + 2);
6892                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6893                 CHECK_TYPELOAD (klass);
6894                 type = mini_get_underlying_type (&klass->byval_arg);
6895                 emit_init_local (cfg, local, type, TRUE);
6896                 return ip + 6;
6897         }
6898  exception_exit:
6899         return NULL;
6900 }
6901
6902 static MonoInst*
6903 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6904 {
6905         MonoInst *icall_args [16];
6906         MonoInst *call_target, *ins, *vtable_ins;
6907         int arg_reg, this_reg, vtable_reg;
6908         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6909         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6910         gboolean variant_iface = FALSE;
6911         guint32 slot;
6912         int offset;
6913         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6914
6915         /*
6916          * In llvm-only mode, vtables contain function descriptors instead of
6917          * method addresses/trampolines.
6918          */
6919         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6920
6921         if (is_iface)
6922                 slot = mono_method_get_imt_slot (cmethod);
6923         else
6924                 slot = mono_method_get_vtable_index (cmethod);
6925
6926         this_reg = sp [0]->dreg;
6927
6928         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6929                 variant_iface = TRUE;
6930
6931         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6932                 /*
6933                  * The simplest case, a normal virtual call.
6934                  */
6935                 int slot_reg = alloc_preg (cfg);
6936                 int addr_reg = alloc_preg (cfg);
6937                 int arg_reg = alloc_preg (cfg);
6938                 MonoBasicBlock *non_null_bb;
6939
6940                 vtable_reg = alloc_preg (cfg);
6941                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6942                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6943
6944                 /* Load the vtable slot, which contains a function descriptor. */
6945                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6946
6947                 NEW_BBLOCK (cfg, non_null_bb);
6948
6949                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6950                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6951                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6952
6953                 /* Slow path */
6954                 // FIXME: Make the wrapper use the preserveall cconv
6955                 // FIXME: Use one icall per slot for small slot numbers ?
6956                 icall_args [0] = vtable_ins;
6957                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6958                 /* Make the icall return the vtable slot value to save some code space */
6959                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6960                 ins->dreg = slot_reg;
6961                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6962
6963                 /* Fastpath */
6964                 MONO_START_BB (cfg, non_null_bb);
6965                 /* Load the address + arg from the vtable slot */
6966                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6967                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6968
6969                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6970         }
6971
6972         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6973                 /*
6974                  * A simple interface call
6975                  *
6976                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6977                  * The imt slot contains a function descriptor for a runtime function + arg.
6978                  */
6979                 int slot_reg = alloc_preg (cfg);
6980                 int addr_reg = alloc_preg (cfg);
6981                 int arg_reg = alloc_preg (cfg);
6982                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6983
6984                 vtable_reg = alloc_preg (cfg);
6985                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6986                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6987
6988                 /*
6989                  * The slot is already initialized when the vtable is created so there is no need
6990                  * to check it here.
6991                  */
6992
6993                 /* Load the imt slot, which contains a function descriptor. */
6994                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6995
6996                 /* Load the address + arg of the imt thunk from the imt slot */
6997                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6998                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6999                 /*
7000                  * IMT thunks in llvm-only mode are C functions which take an info argument
7001                  * plus the imt method and return the ftndesc to call.
7002                  */
7003                 icall_args [0] = thunk_arg_ins;
7004                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7005                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7006                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7007
7008                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7009         }
7010
7011         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
7012                 /*
7013                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7014                  * dynamically extended as more instantiations are discovered.
7015                  * This handles generic virtual methods both on classes and interfaces.
7016                  */
7017                 int slot_reg = alloc_preg (cfg);
7018                 int addr_reg = alloc_preg (cfg);
7019                 int arg_reg = alloc_preg (cfg);
7020                 int ftndesc_reg = alloc_preg (cfg);
7021                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7022                 MonoBasicBlock *slowpath_bb, *end_bb;
7023
7024                 NEW_BBLOCK (cfg, slowpath_bb);
7025                 NEW_BBLOCK (cfg, end_bb);
7026
7027                 vtable_reg = alloc_preg (cfg);
7028                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7029                 if (is_iface)
7030                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7031                 else
7032                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7033
7034                 /* Load the slot, which contains a function descriptor. */
7035                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7036
7037                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7038                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7039                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7040                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7041
7042                 /* Fastpath */
7043                 /* Same as with iface calls */
7044                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7045                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7046                 icall_args [0] = thunk_arg_ins;
7047                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7048                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7049                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
7050                 ftndesc_ins->dreg = ftndesc_reg;
7051                 /*
7052                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7053                  * they don't know about yet. Fall back to the slowpath in that case.
7054                  */
7055                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7056                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7057
7058                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7059
7060                 /* Slowpath */
7061                 MONO_START_BB (cfg, slowpath_bb);
7062                 icall_args [0] = vtable_ins;
7063                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7064                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7065                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7066                 if (is_iface)
7067                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7068                 else
7069                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7070                 ftndesc_ins->dreg = ftndesc_reg;
7071                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7072
7073                 /* Common case */
7074                 MONO_START_BB (cfg, end_bb);
7075                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7076         }
7077
7078         /*
7079          * Non-optimized cases
7080          */
7081         icall_args [0] = sp [0];
7082         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7083
7084         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7085                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7086
7087         arg_reg = alloc_preg (cfg);
7088         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7089         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7090
7091         g_assert (is_gsharedvt);
7092         if (is_iface)
7093                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7094         else
7095                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7096
7097         /*
7098          * Pass the extra argument even if the callee doesn't receive it, most
7099          * calling conventions allow this.
7100          */
7101         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7102 }
7103
7104 static gboolean
7105 is_exception_class (MonoClass *klass)
7106 {
7107         while (klass) {
7108                 if (klass == mono_defaults.exception_class)
7109                         return TRUE;
7110                 klass = klass->parent;
7111         }
7112         return FALSE;
7113 }
7114
7115 /*
7116  * is_jit_optimizer_disabled:
7117  *
7118  *   Determine whenever M's assembly has a DebuggableAttribute with the
7119  * IsJITOptimizerDisabled flag set.
7120  */
7121 static gboolean
7122 is_jit_optimizer_disabled (MonoMethod *m)
7123 {
7124         MonoError error;
7125         MonoAssembly *ass = m->klass->image->assembly;
7126         MonoCustomAttrInfo* attrs;
7127         MonoClass *klass;
7128         int i;
7129         gboolean val = FALSE;
7130
7131         g_assert (ass);
7132         if (ass->jit_optimizer_disabled_inited)
7133                 return ass->jit_optimizer_disabled;
7134
7135         klass = mono_class_try_get_debuggable_attribute_class ();
7136
7137         if (!klass) {
7138                 /* Linked away */
7139                 ass->jit_optimizer_disabled = FALSE;
7140                 mono_memory_barrier ();
7141                 ass->jit_optimizer_disabled_inited = TRUE;
7142                 return FALSE;
7143         }
7144
7145         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7146         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7147         if (attrs) {
7148                 for (i = 0; i < attrs->num_attrs; ++i) {
7149                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7150                         const gchar *p;
7151                         MonoMethodSignature *sig;
7152
7153                         if (!attr->ctor || attr->ctor->klass != klass)
7154                                 continue;
7155                         /* Decode the attribute. See reflection.c */
7156                         p = (const char*)attr->data;
7157                         g_assert (read16 (p) == 0x0001);
7158                         p += 2;
7159
7160                         // FIXME: Support named parameters
7161                         sig = mono_method_signature (attr->ctor);
7162                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7163                                 continue;
7164                         /* Two boolean arguments */
7165                         p ++;
7166                         val = *p;
7167                 }
7168                 mono_custom_attrs_free (attrs);
7169         }
7170
7171         ass->jit_optimizer_disabled = val;
7172         mono_memory_barrier ();
7173         ass->jit_optimizer_disabled_inited = TRUE;
7174
7175         return val;
7176 }
7177
7178 static gboolean
7179 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7180 {
7181         gboolean supported_tail_call;
7182         int i;
7183
7184         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7185
7186         for (i = 0; i < fsig->param_count; ++i) {
7187                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7188                         /* These can point to the current method's stack */
7189                         supported_tail_call = FALSE;
7190         }
7191         if (fsig->hasthis && cmethod->klass->valuetype)
7192                 /* this might point to the current method's stack */
7193                 supported_tail_call = FALSE;
7194         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7195                 supported_tail_call = FALSE;
7196         if (cfg->method->save_lmf)
7197                 supported_tail_call = FALSE;
7198         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7199                 supported_tail_call = FALSE;
7200         if (call_opcode != CEE_CALL)
7201                 supported_tail_call = FALSE;
7202
7203         /* Debugging support */
7204 #if 0
7205         if (supported_tail_call) {
7206                 if (!mono_debug_count ())
7207                         supported_tail_call = FALSE;
7208         }
7209 #endif
7210
7211         return supported_tail_call;
7212 }
7213
7214 /*
7215  * handle_ctor_call:
7216  *
7217  *   Handle calls made to ctors from NEWOBJ opcodes.
7218  */
7219 static void
7220 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7221                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7222 {
7223         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7224
7225         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7226                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7227                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7228                         mono_class_vtable (cfg->domain, cmethod->klass);
7229                         CHECK_TYPELOAD (cmethod->klass);
7230
7231                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7232                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7233                 } else {
7234                         if (context_used) {
7235                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7236                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7237                         } else {
7238                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7239
7240                                 CHECK_TYPELOAD (cmethod->klass);
7241                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7242                         }
7243                 }
7244         }
7245
7246         /* Avoid virtual calls to ctors if possible */
7247         if (mono_class_is_marshalbyref (cmethod->klass))
7248                 callvirt_this_arg = sp [0];
7249
7250         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7251                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7252                 CHECK_CFG_EXCEPTION;
7253         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7254                            mono_method_check_inlining (cfg, cmethod) &&
7255                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7256                 int costs;
7257
7258                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7259                         cfg->real_offset += 5;
7260
7261                         *inline_costs += costs - 5;
7262                 } else {
7263                         INLINE_FAILURE ("inline failure");
7264                         // FIXME-VT: Clean this up
7265                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7266                                 GSHAREDVT_FAILURE(*ip);
7267                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7268                 }
7269         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7270                 MonoInst *addr;
7271
7272                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7273
7274                 if (cfg->llvm_only) {
7275                         // FIXME: Avoid initializing vtable_arg
7276                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7277                 } else {
7278                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7279                 }
7280         } else if (context_used &&
7281                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7282                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7283                 MonoInst *cmethod_addr;
7284
7285                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7286
7287                 if (cfg->llvm_only) {
7288                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7289                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7290                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7291                 } else {
7292                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7293                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7294
7295                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7296                 }
7297         } else {
7298                 INLINE_FAILURE ("ctor call");
7299                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7300                                                                                   callvirt_this_arg, NULL, vtable_arg);
7301         }
7302  exception_exit:
7303         return;
7304 }
7305
7306 static void
7307 emit_setret (MonoCompile *cfg, MonoInst *val)
7308 {
7309         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7310         MonoInst *ins;
7311
7312         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7313                 MonoInst *ret_addr;
7314
7315                 if (!cfg->vret_addr) {
7316                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7317                 } else {
7318                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7319
7320                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7321                         ins->klass = mono_class_from_mono_type (ret_type);
7322                 }
7323         } else {
7324 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7325                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7326                         MonoInst *iargs [1];
7327                         MonoInst *conv;
7328
7329                         iargs [0] = val;
7330                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7331                         mono_arch_emit_setret (cfg, cfg->method, conv);
7332                 } else {
7333                         mono_arch_emit_setret (cfg, cfg->method, val);
7334                 }
7335 #else
7336                 mono_arch_emit_setret (cfg, cfg->method, val);
7337 #endif
7338         }
7339 }
7340
7341 /*
7342  * mono_method_to_ir:
7343  *
7344  * Translate the .net IL into linear IR.
7345  *
7346  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7347  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7348  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7349  * @inline_args: if not NULL, contains the arguments to the inline call
7350  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7351  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7352  *
7353  * This method is used to turn ECMA IL into Mono's internal Linear IR
7354  * reprensetation.  It is used both for entire methods, as well as
7355  * inlining existing methods.  In the former case, the @start_bblock,
7356  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7357  * inline_offset is set to zero.
7358  *
7359  * Returns: the inline cost, or -1 if there was an error processing this method.
7360  */
7361 int
7362 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7363                    MonoInst *return_var, MonoInst **inline_args,
7364                    guint inline_offset, gboolean is_virtual_call)
7365 {
7366         MonoError error;
7367         MonoInst *ins, **sp, **stack_start;
7368         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7369         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7370         MonoMethod *cmethod, *method_definition;
7371         MonoInst **arg_array;
7372         MonoMethodHeader *header;
7373         MonoImage *image;
7374         guint32 token, ins_flag;
7375         MonoClass *klass;
7376         MonoClass *constrained_class = NULL;
7377         unsigned char *ip, *end, *target, *err_pos;
7378         MonoMethodSignature *sig;
7379         MonoGenericContext *generic_context = NULL;
7380         MonoGenericContainer *generic_container = NULL;
7381         MonoType **param_types;
7382         int i, n, start_new_bblock, dreg;
7383         int num_calls = 0, inline_costs = 0;
7384         int breakpoint_id = 0;
7385         guint num_args;
7386         GSList *class_inits = NULL;
7387         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7388         int context_used;
7389         gboolean init_locals, seq_points, skip_dead_blocks;
7390         gboolean sym_seq_points = FALSE;
7391         MonoDebugMethodInfo *minfo;
7392         MonoBitSet *seq_point_locs = NULL;
7393         MonoBitSet *seq_point_set_locs = NULL;
7394
7395         cfg->disable_inline = is_jit_optimizer_disabled (method);
7396
7397         /* serialization and xdomain stuff may need access to private fields and methods */
7398         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7399         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7400         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7401         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7402         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7403         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7404
7405         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7406         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7407         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7408         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7409         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7410
7411         image = method->klass->image;
7412         header = mono_method_get_header_checked (method, &cfg->error);
7413         if (!header) {
7414                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7415                 goto exception_exit;
7416         } else {
7417                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7418         }
7419
7420         generic_container = mono_method_get_generic_container (method);
7421         sig = mono_method_signature (method);
7422         num_args = sig->hasthis + sig->param_count;
7423         ip = (unsigned char*)header->code;
7424         cfg->cil_start = ip;
7425         end = ip + header->code_size;
7426         cfg->stat_cil_code_size += header->code_size;
7427
7428         seq_points = cfg->gen_seq_points && cfg->method == method;
7429
7430         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7431                 /* We could hit a seq point before attaching to the JIT (#8338) */
7432                 seq_points = FALSE;
7433         }
7434
7435         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7436                 minfo = mono_debug_lookup_method (method);
7437                 if (minfo) {
7438                         MonoSymSeqPoint *sps;
7439                         int i, n_il_offsets;
7440
7441                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7442                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7443                         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);
7444                         sym_seq_points = TRUE;
7445                         for (i = 0; i < n_il_offsets; ++i) {
7446                                 if (sps [i].il_offset < header->code_size)
7447                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7448                         }
7449                         g_free (sps);
7450
7451                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7452                         if (asyncMethod) {
7453                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7454                                 {
7455                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7456                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7457                                 }
7458                                 mono_debug_free_method_async_debug_info (asyncMethod);
7459                         }
7460                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7461                         /* Methods without line number info like auto-generated property accessors */
7462                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7463                         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);
7464                         sym_seq_points = TRUE;
7465                 }
7466         }
7467
7468         /*
7469          * Methods without init_locals set could cause asserts in various passes
7470          * (#497220). To work around this, we emit dummy initialization opcodes
7471          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7472          * on some platforms.
7473          */
7474         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7475                 init_locals = header->init_locals;
7476         else
7477                 init_locals = TRUE;
7478
7479         method_definition = method;
7480         while (method_definition->is_inflated) {
7481                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7482                 method_definition = imethod->declaring;
7483         }
7484
7485         /* SkipVerification is not allowed if core-clr is enabled */
7486         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7487                 dont_verify = TRUE;
7488                 dont_verify_stloc = TRUE;
7489         }
7490
7491         if (sig->is_inflated)
7492                 generic_context = mono_method_get_context (method);
7493         else if (generic_container)
7494                 generic_context = &generic_container->context;
7495         cfg->generic_context = generic_context;
7496
7497         if (!cfg->gshared)
7498                 g_assert (!sig->has_type_parameters);
7499
7500         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7501                 g_assert (method->is_inflated);
7502                 g_assert (mono_method_get_context (method)->method_inst);
7503         }
7504         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7505                 g_assert (sig->generic_param_count);
7506
7507         if (cfg->method == method) {
7508                 cfg->real_offset = 0;
7509         } else {
7510                 cfg->real_offset = inline_offset;
7511         }
7512
7513         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7514         cfg->cil_offset_to_bb_len = header->code_size;
7515
7516         cfg->current_method = method;
7517
7518         if (cfg->verbose_level > 2)
7519                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7520
7521         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7522         if (sig->hasthis)
7523                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7524         for (n = 0; n < sig->param_count; ++n)
7525                 param_types [n + sig->hasthis] = sig->params [n];
7526         cfg->arg_types = param_types;
7527
7528         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7529         if (cfg->method == method) {
7530
7531                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7532                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7533
7534                 /* ENTRY BLOCK */
7535                 NEW_BBLOCK (cfg, start_bblock);
7536                 cfg->bb_entry = start_bblock;
7537                 start_bblock->cil_code = NULL;
7538                 start_bblock->cil_length = 0;
7539
7540                 /* EXIT BLOCK */
7541                 NEW_BBLOCK (cfg, end_bblock);
7542                 cfg->bb_exit = end_bblock;
7543                 end_bblock->cil_code = NULL;
7544                 end_bblock->cil_length = 0;
7545                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7546                 g_assert (cfg->num_bblocks == 2);
7547
7548                 arg_array = cfg->args;
7549
7550                 if (header->num_clauses) {
7551                         cfg->spvars = g_hash_table_new (NULL, NULL);
7552                         cfg->exvars = g_hash_table_new (NULL, NULL);
7553                 }
7554                 /* handle exception clauses */
7555                 for (i = 0; i < header->num_clauses; ++i) {
7556                         MonoBasicBlock *try_bb;
7557                         MonoExceptionClause *clause = &header->clauses [i];
7558                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7559
7560                         try_bb->real_offset = clause->try_offset;
7561                         try_bb->try_start = TRUE;
7562                         try_bb->region = ((i + 1) << 8) | clause->flags;
7563                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7564                         tblock->real_offset = clause->handler_offset;
7565                         tblock->flags |= BB_EXCEPTION_HANDLER;
7566
7567                         /*
7568                          * Linking the try block with the EH block hinders inlining as we won't be able to
7569                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7570                          */
7571                         if (COMPILE_LLVM (cfg))
7572                                 link_bblock (cfg, try_bb, tblock);
7573
7574                         if (*(ip + clause->handler_offset) == CEE_POP)
7575                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7576
7577                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7578                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7579                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7580                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7581                                 MONO_ADD_INS (tblock, ins);
7582
7583                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7584                                         /* finally clauses already have a seq point */
7585                                         /* seq points for filter clauses are emitted below */
7586                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7587                                         MONO_ADD_INS (tblock, ins);
7588                                 }
7589
7590                                 /* todo: is a fault block unsafe to optimize? */
7591                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7592                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7593                         }
7594
7595                         /*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);
7596                           while (p < end) {
7597                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7598                           }*/
7599                         /* catch and filter blocks get the exception object on the stack */
7600                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7601                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7602
7603                                 /* mostly like handle_stack_args (), but just sets the input args */
7604                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7605                                 tblock->in_scount = 1;
7606                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7607                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7608
7609                                 cfg->cbb = tblock;
7610
7611 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7612                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7613                                 if (!cfg->compile_llvm) {
7614                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7615                                         ins->dreg = tblock->in_stack [0]->dreg;
7616                                         MONO_ADD_INS (tblock, ins);
7617                                 }
7618 #else
7619                                 MonoInst *dummy_use;
7620
7621                                 /*
7622                                  * Add a dummy use for the exvar so its liveness info will be
7623                                  * correct.
7624                                  */
7625                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7626 #endif
7627
7628                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7629                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7630                                         MONO_ADD_INS (tblock, ins);
7631                                 }
7632
7633                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7634                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7635                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7636                                         tblock->real_offset = clause->data.filter_offset;
7637                                         tblock->in_scount = 1;
7638                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7639                                         /* The filter block shares the exvar with the handler block */
7640                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7641                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7642                                         MONO_ADD_INS (tblock, ins);
7643                                 }
7644                         }
7645
7646                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7647                                         clause->data.catch_class &&
7648                                         cfg->gshared &&
7649                                         mono_class_check_context_used (clause->data.catch_class)) {
7650                                 /*
7651                                  * In shared generic code with catch
7652                                  * clauses containing type variables
7653                                  * the exception handling code has to
7654                                  * be able to get to the rgctx.
7655                                  * Therefore we have to make sure that
7656                                  * the vtable/mrgctx argument (for
7657                                  * static or generic methods) or the
7658                                  * "this" argument (for non-static
7659                                  * methods) are live.
7660                                  */
7661                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7662                                                 mini_method_get_context (method)->method_inst ||
7663                                                 method->klass->valuetype) {
7664                                         mono_get_vtable_var (cfg);
7665                                 } else {
7666                                         MonoInst *dummy_use;
7667
7668                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7669                                 }
7670                         }
7671                 }
7672         } else {
7673                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7674                 cfg->cbb = start_bblock;
7675                 cfg->args = arg_array;
7676                 mono_save_args (cfg, sig, inline_args);
7677         }
7678
7679         /* FIRST CODE BLOCK */
7680         NEW_BBLOCK (cfg, tblock);
7681         tblock->cil_code = ip;
7682         cfg->cbb = tblock;
7683         cfg->ip = ip;
7684
7685         ADD_BBLOCK (cfg, tblock);
7686
7687         if (cfg->method == method) {
7688                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7689                 if (breakpoint_id) {
7690                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7691                         MONO_ADD_INS (cfg->cbb, ins);
7692                 }
7693         }
7694
7695         /* we use a separate basic block for the initialization code */
7696         NEW_BBLOCK (cfg, init_localsbb);
7697         if (cfg->method == method)
7698                 cfg->bb_init = init_localsbb;
7699         init_localsbb->real_offset = cfg->real_offset;
7700         start_bblock->next_bb = init_localsbb;
7701         init_localsbb->next_bb = cfg->cbb;
7702         link_bblock (cfg, start_bblock, init_localsbb);
7703         link_bblock (cfg, init_localsbb, cfg->cbb);
7704
7705         cfg->cbb = init_localsbb;
7706
7707         if (cfg->gsharedvt && cfg->method == method) {
7708                 MonoGSharedVtMethodInfo *info;
7709                 MonoInst *var, *locals_var;
7710                 int dreg;
7711
7712                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7713                 info->method = cfg->method;
7714                 info->count_entries = 16;
7715                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7716                 cfg->gsharedvt_info = info;
7717
7718                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7719                 /* prevent it from being register allocated */
7720                 //var->flags |= MONO_INST_VOLATILE;
7721                 cfg->gsharedvt_info_var = var;
7722
7723                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7724                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7725
7726                 /* Allocate locals */
7727                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7728                 /* prevent it from being register allocated */
7729                 //locals_var->flags |= MONO_INST_VOLATILE;
7730                 cfg->gsharedvt_locals_var = locals_var;
7731
7732                 dreg = alloc_ireg (cfg);
7733                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7734
7735                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7736                 ins->dreg = locals_var->dreg;
7737                 ins->sreg1 = dreg;
7738                 MONO_ADD_INS (cfg->cbb, ins);
7739                 cfg->gsharedvt_locals_var_ins = ins;
7740
7741                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7742                 /*
7743                 if (init_locals)
7744                         ins->flags |= MONO_INST_INIT;
7745                 */
7746         }
7747
7748         if (mono_security_core_clr_enabled ()) {
7749                 /* check if this is native code, e.g. an icall or a p/invoke */
7750                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7751                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7752                         if (wrapped) {
7753                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7754                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7755
7756                                 /* if this ia a native call then it can only be JITted from platform code */
7757                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7758                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7759                                                 MonoException *ex = icall ? mono_get_exception_security () :
7760                                                         mono_get_exception_method_access ();
7761                                                 emit_throw_exception (cfg, ex);
7762                                         }
7763                                 }
7764                         }
7765                 }
7766         }
7767
7768         CHECK_CFG_EXCEPTION;
7769
7770         if (header->code_size == 0)
7771                 UNVERIFIED;
7772
7773         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7774                 ip = err_pos;
7775                 UNVERIFIED;
7776         }
7777
7778         if (cfg->method == method)
7779                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7780
7781         for (n = 0; n < header->num_locals; ++n) {
7782                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7783                         UNVERIFIED;
7784         }
7785         class_inits = NULL;
7786
7787         /* We force the vtable variable here for all shared methods
7788            for the possibility that they might show up in a stack
7789            trace where their exact instantiation is needed. */
7790         if (cfg->gshared && method == cfg->method) {
7791                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7792                                 mini_method_get_context (method)->method_inst ||
7793                                 method->klass->valuetype) {
7794                         mono_get_vtable_var (cfg);
7795                 } else {
7796                         /* FIXME: Is there a better way to do this?
7797                            We need the variable live for the duration
7798                            of the whole method. */
7799                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7800                 }
7801         }
7802
7803         /* add a check for this != NULL to inlined methods */
7804         if (is_virtual_call) {
7805                 MonoInst *arg_ins;
7806
7807                 NEW_ARGLOAD (cfg, arg_ins, 0);
7808                 MONO_ADD_INS (cfg->cbb, arg_ins);
7809                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7810         }
7811
7812         skip_dead_blocks = !dont_verify;
7813         if (skip_dead_blocks) {
7814                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7815                 CHECK_CFG_ERROR;
7816                 g_assert (bb);
7817         }
7818
7819         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7820         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7821
7822         ins_flag = 0;
7823         start_new_bblock = 0;
7824         while (ip < end) {
7825                 if (cfg->method == method)
7826                         cfg->real_offset = ip - header->code;
7827                 else
7828                         cfg->real_offset = inline_offset;
7829                 cfg->ip = ip;
7830
7831                 context_used = 0;
7832
7833                 if (start_new_bblock) {
7834                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7835                         if (start_new_bblock == 2) {
7836                                 g_assert (ip == tblock->cil_code);
7837                         } else {
7838                                 GET_BBLOCK (cfg, tblock, ip);
7839                         }
7840                         cfg->cbb->next_bb = tblock;
7841                         cfg->cbb = tblock;
7842                         start_new_bblock = 0;
7843                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7844                                 if (cfg->verbose_level > 3)
7845                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7846                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7847                                 *sp++ = ins;
7848                         }
7849                         if (class_inits)
7850                                 g_slist_free (class_inits);
7851                         class_inits = NULL;
7852                 } else {
7853                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7854                                 link_bblock (cfg, cfg->cbb, tblock);
7855                                 if (sp != stack_start) {
7856                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7857                                         sp = stack_start;
7858                                         CHECK_UNVERIFIABLE (cfg);
7859                                 }
7860                                 cfg->cbb->next_bb = tblock;
7861                                 cfg->cbb = tblock;
7862                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7863                                         if (cfg->verbose_level > 3)
7864                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7865                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7866                                         *sp++ = ins;
7867                                 }
7868                                 g_slist_free (class_inits);
7869                                 class_inits = NULL;
7870                         }
7871                 }
7872
7873                 if (skip_dead_blocks) {
7874                         int ip_offset = ip - header->code;
7875
7876                         if (ip_offset == bb->end)
7877                                 bb = bb->next;
7878
7879                         if (bb->dead) {
7880                                 int op_size = mono_opcode_size (ip, end);
7881                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7882
7883                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7884
7885                                 if (ip_offset + op_size == bb->end) {
7886                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7887                                         MONO_ADD_INS (cfg->cbb, ins);
7888                                         start_new_bblock = 1;
7889                                 }
7890
7891                                 ip += op_size;
7892                                 continue;
7893                         }
7894                 }
7895                 /*
7896                  * Sequence points are points where the debugger can place a breakpoint.
7897                  * Currently, we generate these automatically at points where the IL
7898                  * stack is empty.
7899                  */
7900                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7901                         /*
7902                          * Make methods interruptable at the beginning, and at the targets of
7903                          * backward branches.
7904                          * Also, do this at the start of every bblock in methods with clauses too,
7905                          * to be able to handle instructions with inprecise control flow like
7906                          * throw/endfinally.
7907                          * Backward branches are handled at the end of method-to-ir ().
7908                          */
7909                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7910                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7911
7912                         /* Avoid sequence points on empty IL like .volatile */
7913                         // FIXME: Enable this
7914                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7915                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7916                         if ((sp != stack_start) && !sym_seq_point)
7917                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7918                         MONO_ADD_INS (cfg->cbb, ins);
7919
7920                         if (sym_seq_points)
7921                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7922                 }
7923
7924                 cfg->cbb->real_offset = cfg->real_offset;
7925
7926                 if ((cfg->method == method) && cfg->coverage_info) {
7927                         guint32 cil_offset = ip - header->code;
7928                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7929
7930                         /* TODO: Use an increment here */
7931 #if defined(TARGET_X86)
7932                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
7933                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
7934                         ins->inst_imm = 1;
7935                         MONO_ADD_INS (cfg->cbb, ins);
7936 #else
7937                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
7938                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7939 #endif
7940                 }
7941
7942                 if (cfg->verbose_level > 3)
7943                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7944
7945                 switch (*ip) {
7946                 case CEE_NOP:
7947                         if (seq_points && !sym_seq_points && sp != stack_start) {
7948                                 /*
7949                                  * The C# compiler uses these nops to notify the JIT that it should
7950                                  * insert seq points.
7951                                  */
7952                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7953                                 MONO_ADD_INS (cfg->cbb, ins);
7954                         }
7955                         if (cfg->keep_cil_nops)
7956                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7957                         else
7958                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7959                         ip++;
7960                         MONO_ADD_INS (cfg->cbb, ins);
7961                         break;
7962                 case CEE_BREAK:
7963                         if (should_insert_brekpoint (cfg->method)) {
7964                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7965                         } else {
7966                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7967                         }
7968                         ip++;
7969                         MONO_ADD_INS (cfg->cbb, ins);
7970                         break;
7971                 case CEE_LDARG_0:
7972                 case CEE_LDARG_1:
7973                 case CEE_LDARG_2:
7974                 case CEE_LDARG_3:
7975                         CHECK_STACK_OVF (1);
7976                         n = (*ip)-CEE_LDARG_0;
7977                         CHECK_ARG (n);
7978                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7979                         ip++;
7980                         *sp++ = ins;
7981                         break;
7982                 case CEE_LDLOC_0:
7983                 case CEE_LDLOC_1:
7984                 case CEE_LDLOC_2:
7985                 case CEE_LDLOC_3:
7986                         CHECK_STACK_OVF (1);
7987                         n = (*ip)-CEE_LDLOC_0;
7988                         CHECK_LOCAL (n);
7989                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7990                         ip++;
7991                         *sp++ = ins;
7992                         break;
7993                 case CEE_STLOC_0:
7994                 case CEE_STLOC_1:
7995                 case CEE_STLOC_2:
7996                 case CEE_STLOC_3: {
7997                         CHECK_STACK (1);
7998                         n = (*ip)-CEE_STLOC_0;
7999                         CHECK_LOCAL (n);
8000                         --sp;
8001                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8002                                 UNVERIFIED;
8003                         emit_stloc_ir (cfg, sp, header, n);
8004                         ++ip;
8005                         inline_costs += 1;
8006                         break;
8007                         }
8008                 case CEE_LDARG_S:
8009                         CHECK_OPSIZE (2);
8010                         CHECK_STACK_OVF (1);
8011                         n = ip [1];
8012                         CHECK_ARG (n);
8013                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8014                         *sp++ = ins;
8015                         ip += 2;
8016                         break;
8017                 case CEE_LDARGA_S:
8018                         CHECK_OPSIZE (2);
8019                         CHECK_STACK_OVF (1);
8020                         n = ip [1];
8021                         CHECK_ARG (n);
8022                         NEW_ARGLOADA (cfg, ins, n);
8023                         MONO_ADD_INS (cfg->cbb, ins);
8024                         *sp++ = ins;
8025                         ip += 2;
8026                         break;
8027                 case CEE_STARG_S:
8028                         CHECK_OPSIZE (2);
8029                         CHECK_STACK (1);
8030                         --sp;
8031                         n = ip [1];
8032                         CHECK_ARG (n);
8033                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8034                                 UNVERIFIED;
8035                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8036                         ip += 2;
8037                         break;
8038                 case CEE_LDLOC_S:
8039                         CHECK_OPSIZE (2);
8040                         CHECK_STACK_OVF (1);
8041                         n = ip [1];
8042                         CHECK_LOCAL (n);
8043                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8044                         *sp++ = ins;
8045                         ip += 2;
8046                         break;
8047                 case CEE_LDLOCA_S: {
8048                         unsigned char *tmp_ip;
8049                         CHECK_OPSIZE (2);
8050                         CHECK_STACK_OVF (1);
8051                         CHECK_LOCAL (ip [1]);
8052
8053                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8054                                 ip = tmp_ip;
8055                                 inline_costs += 1;
8056                                 break;
8057                         }
8058
8059                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8060                         *sp++ = ins;
8061                         ip += 2;
8062                         break;
8063                 }
8064                 case CEE_STLOC_S:
8065                         CHECK_OPSIZE (2);
8066                         CHECK_STACK (1);
8067                         --sp;
8068                         CHECK_LOCAL (ip [1]);
8069                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8070                                 UNVERIFIED;
8071                         emit_stloc_ir (cfg, sp, header, ip [1]);
8072                         ip += 2;
8073                         inline_costs += 1;
8074                         break;
8075                 case CEE_LDNULL:
8076                         CHECK_STACK_OVF (1);
8077                         EMIT_NEW_PCONST (cfg, ins, NULL);
8078                         ins->type = STACK_OBJ;
8079                         ++ip;
8080                         *sp++ = ins;
8081                         break;
8082                 case CEE_LDC_I4_M1:
8083                         CHECK_STACK_OVF (1);
8084                         EMIT_NEW_ICONST (cfg, ins, -1);
8085                         ++ip;
8086                         *sp++ = ins;
8087                         break;
8088                 case CEE_LDC_I4_0:
8089                 case CEE_LDC_I4_1:
8090                 case CEE_LDC_I4_2:
8091                 case CEE_LDC_I4_3:
8092                 case CEE_LDC_I4_4:
8093                 case CEE_LDC_I4_5:
8094                 case CEE_LDC_I4_6:
8095                 case CEE_LDC_I4_7:
8096                 case CEE_LDC_I4_8:
8097                         CHECK_STACK_OVF (1);
8098                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8099                         ++ip;
8100                         *sp++ = ins;
8101                         break;
8102                 case CEE_LDC_I4_S:
8103                         CHECK_OPSIZE (2);
8104                         CHECK_STACK_OVF (1);
8105                         ++ip;
8106                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8107                         ++ip;
8108                         *sp++ = ins;
8109                         break;
8110                 case CEE_LDC_I4:
8111                         CHECK_OPSIZE (5);
8112                         CHECK_STACK_OVF (1);
8113                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8114                         ip += 5;
8115                         *sp++ = ins;
8116                         break;
8117                 case CEE_LDC_I8:
8118                         CHECK_OPSIZE (9);
8119                         CHECK_STACK_OVF (1);
8120                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8121                         ins->type = STACK_I8;
8122                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8123                         ++ip;
8124                         ins->inst_l = (gint64)read64 (ip);
8125                         MONO_ADD_INS (cfg->cbb, ins);
8126                         ip += 8;
8127                         *sp++ = ins;
8128                         break;
8129                 case CEE_LDC_R4: {
8130                         float *f;
8131                         gboolean use_aotconst = FALSE;
8132
8133 #ifdef TARGET_POWERPC
8134                         /* FIXME: Clean this up */
8135                         if (cfg->compile_aot)
8136                                 use_aotconst = TRUE;
8137 #endif
8138
8139                         /* FIXME: we should really allocate this only late in the compilation process */
8140                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8141                         CHECK_OPSIZE (5);
8142                         CHECK_STACK_OVF (1);
8143
8144                         if (use_aotconst) {
8145                                 MonoInst *cons;
8146                                 int dreg;
8147
8148                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8149
8150                                 dreg = alloc_freg (cfg);
8151                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8152                                 ins->type = cfg->r4_stack_type;
8153                         } else {
8154                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8155                                 ins->type = cfg->r4_stack_type;
8156                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8157                                 ins->inst_p0 = f;
8158                                 MONO_ADD_INS (cfg->cbb, ins);
8159                         }
8160                         ++ip;
8161                         readr4 (ip, f);
8162                         ip += 4;
8163                         *sp++ = ins;
8164                         break;
8165                 }
8166                 case CEE_LDC_R8: {
8167                         double *d;
8168                         gboolean use_aotconst = FALSE;
8169
8170 #ifdef TARGET_POWERPC
8171                         /* FIXME: Clean this up */
8172                         if (cfg->compile_aot)
8173                                 use_aotconst = TRUE;
8174 #endif
8175
8176                         /* FIXME: we should really allocate this only late in the compilation process */
8177                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8178                         CHECK_OPSIZE (9);
8179                         CHECK_STACK_OVF (1);
8180
8181                         if (use_aotconst) {
8182                                 MonoInst *cons;
8183                                 int dreg;
8184
8185                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8186
8187                                 dreg = alloc_freg (cfg);
8188                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8189                                 ins->type = STACK_R8;
8190                         } else {
8191                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8192                                 ins->type = STACK_R8;
8193                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8194                                 ins->inst_p0 = d;
8195                                 MONO_ADD_INS (cfg->cbb, ins);
8196                         }
8197                         ++ip;
8198                         readr8 (ip, d);
8199                         ip += 8;
8200                         *sp++ = ins;
8201                         break;
8202                 }
8203                 case CEE_DUP: {
8204                         MonoInst *temp, *store;
8205                         CHECK_STACK (1);
8206                         CHECK_STACK_OVF (1);
8207                         sp--;
8208                         ins = *sp;
8209
8210                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8211                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8212
8213                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8214                         *sp++ = ins;
8215
8216                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8217                         *sp++ = ins;
8218
8219                         ++ip;
8220                         inline_costs += 2;
8221                         break;
8222                 }
8223                 case CEE_POP:
8224                         CHECK_STACK (1);
8225                         ip++;
8226                         --sp;
8227
8228 #ifdef TARGET_X86
8229                         if (sp [0]->type == STACK_R8)
8230                                 /* we need to pop the value from the x86 FP stack */
8231                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8232 #endif
8233                         break;
8234                 case CEE_JMP: {
8235                         MonoCallInst *call;
8236                         MonoMethodSignature *fsig;
8237                         int i, n;
8238
8239                         INLINE_FAILURE ("jmp");
8240                         GSHAREDVT_FAILURE (*ip);
8241
8242                         CHECK_OPSIZE (5);
8243                         if (stack_start != sp)
8244                                 UNVERIFIED;
8245                         token = read32 (ip + 1);
8246                         /* FIXME: check the signature matches */
8247                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8248                         CHECK_CFG_ERROR;
8249
8250                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8251                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8252
8253                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8254
8255                         fsig = mono_method_signature (cmethod);
8256                         n = fsig->param_count + fsig->hasthis;
8257                         if (cfg->llvm_only) {
8258                                 MonoInst **args;
8259
8260                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8261                                 for (i = 0; i < n; ++i)
8262                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8263                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8264                                 /*
8265                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8266                                  * have to emit a normal return since llvm expects it.
8267                                  */
8268                                 if (cfg->ret)
8269                                         emit_setret (cfg, ins);
8270                                 MONO_INST_NEW (cfg, ins, OP_BR);
8271                                 ins->inst_target_bb = end_bblock;
8272                                 MONO_ADD_INS (cfg->cbb, ins);
8273                                 link_bblock (cfg, cfg->cbb, end_bblock);
8274                                 ip += 5;
8275                                 break;
8276                         } else if (cfg->backend->have_op_tail_call) {
8277                                 /* Handle tail calls similarly to calls */
8278                                 DISABLE_AOT (cfg);
8279
8280                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8281                                 call->method = cmethod;
8282                                 call->tail_call = TRUE;
8283                                 call->signature = mono_method_signature (cmethod);
8284                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8285                                 call->inst.inst_p0 = cmethod;
8286                                 for (i = 0; i < n; ++i)
8287                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8288
8289                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8290                                         call->vret_var = cfg->vret_addr;
8291
8292                                 mono_arch_emit_call (cfg, call);
8293                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8294                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8295                         } else {
8296                                 for (i = 0; i < num_args; ++i)
8297                                         /* Prevent arguments from being optimized away */
8298                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8299
8300                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8301                                 ins = (MonoInst*)call;
8302                                 ins->inst_p0 = cmethod;
8303                                 MONO_ADD_INS (cfg->cbb, ins);
8304                         }
8305
8306                         ip += 5;
8307                         start_new_bblock = 1;
8308                         break;
8309                 }
8310                 case CEE_CALLI: {
8311                         MonoInst *addr;
8312                         MonoMethodSignature *fsig;
8313
8314                         CHECK_OPSIZE (5);
8315                         token = read32 (ip + 1);
8316
8317                         ins = NULL;
8318
8319                         //GSHAREDVT_FAILURE (*ip);
8320                         cmethod = NULL;
8321                         CHECK_STACK (1);
8322                         --sp;
8323                         addr = *sp;
8324                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8325                         CHECK_CFG_ERROR;
8326
8327                         if (method->dynamic && fsig->pinvoke) {
8328                                 MonoInst *args [3];
8329
8330                                 /*
8331                                  * This is a call through a function pointer using a pinvoke
8332                                  * signature. Have to create a wrapper and call that instead.
8333                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8334                                  * instead based on the signature.
8335                                  */
8336                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8337                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8338                                 args [2] = addr;
8339                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8340                         }
8341
8342                         n = fsig->param_count + fsig->hasthis;
8343
8344                         CHECK_STACK (n);
8345
8346                         //g_assert (!virtual_ || fsig->hasthis);
8347
8348                         sp -= n;
8349
8350                         inline_costs += 10 * num_calls++;
8351
8352                         /*
8353                          * Making generic calls out of gsharedvt methods.
8354                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8355                          * patching gshared method addresses into a gsharedvt method.
8356                          */
8357                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8358                                 /*
8359                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8360                                  */
8361                                 MonoInst *callee = addr;
8362
8363                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8364                                         /* Not tested */
8365                                         GSHAREDVT_FAILURE (*ip);
8366
8367                                 if (cfg->llvm_only)
8368                                         // FIXME:
8369                                         GSHAREDVT_FAILURE (*ip);
8370
8371                                 addr = emit_get_rgctx_sig (cfg, context_used,
8372                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8373                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8374                                 goto calli_end;
8375                         }
8376
8377                         /* Prevent inlining of methods with indirect calls */
8378                         INLINE_FAILURE ("indirect call");
8379
8380                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8381                                 MonoJumpInfoType info_type;
8382                                 gpointer info_data;
8383
8384                                 /*
8385                                  * Instead of emitting an indirect call, emit a direct call
8386                                  * with the contents of the aotconst as the patch info.
8387                                  */
8388                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8389                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8390                                         info_data = addr->inst_p0;
8391                                 } else {
8392                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8393                                         info_data = addr->inst_right->inst_left;
8394                                 }
8395
8396                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8397                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8398                                         NULLIFY_INS (addr);
8399                                         goto calli_end;
8400                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8401                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8402                                         NULLIFY_INS (addr);
8403                                         goto calli_end;
8404                                 }
8405                         }
8406                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8407
8408                         calli_end:
8409
8410                         /* End of call, INS should contain the result of the call, if any */
8411
8412                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8413                                 g_assert (ins);
8414                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8415                         }
8416
8417                         CHECK_CFG_EXCEPTION;
8418
8419                         ip += 5;
8420                         ins_flag = 0;
8421                         constrained_class = NULL;
8422                         break;
8423                 }
8424                 case CEE_CALL:
8425                 case CEE_CALLVIRT: {
8426                         MonoInst *addr = NULL;
8427                         MonoMethodSignature *fsig = NULL;
8428                         int array_rank = 0;
8429                         int virtual_ = *ip == CEE_CALLVIRT;
8430                         gboolean pass_imt_from_rgctx = FALSE;
8431                         MonoInst *imt_arg = NULL;
8432                         MonoInst *keep_this_alive = NULL;
8433                         gboolean pass_vtable = FALSE;
8434                         gboolean pass_mrgctx = FALSE;
8435                         MonoInst *vtable_arg = NULL;
8436                         gboolean check_this = FALSE;
8437                         gboolean supported_tail_call = FALSE;
8438                         gboolean tail_call = FALSE;
8439                         gboolean need_seq_point = FALSE;
8440                         guint32 call_opcode = *ip;
8441                         gboolean emit_widen = TRUE;
8442                         gboolean push_res = TRUE;
8443                         gboolean skip_ret = FALSE;
8444                         gboolean delegate_invoke = FALSE;
8445                         gboolean direct_icall = FALSE;
8446                         gboolean constrained_partial_call = FALSE;
8447                         MonoMethod *cil_method;
8448
8449                         CHECK_OPSIZE (5);
8450                         token = read32 (ip + 1);
8451
8452                         ins = NULL;
8453
8454                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8455                         CHECK_CFG_ERROR;
8456
8457                         cil_method = cmethod;
8458
8459                         if (constrained_class) {
8460                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8461                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8462                                                 g_assert (!cmethod->klass->valuetype);
8463                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8464                                                         constrained_partial_call = TRUE;
8465                                         }
8466                                 }
8467
8468                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8469                                         if (cfg->verbose_level > 2)
8470                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8471                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8472                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8473                                                   cfg->gshared)) {
8474                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8475                                                 CHECK_CFG_ERROR;
8476                                         }
8477                                 } else {
8478                                         if (cfg->verbose_level > 2)
8479                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8480
8481                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8482                                                 /*
8483                                                  * This is needed since get_method_constrained can't find
8484                                                  * the method in klass representing a type var.
8485                                                  * The type var is guaranteed to be a reference type in this
8486                                                  * case.
8487                                                  */
8488                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8489                                                         g_assert (!cmethod->klass->valuetype);
8490                                         } else {
8491                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8492                                                 CHECK_CFG_ERROR;
8493                                         }
8494                                 }
8495
8496                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8497                                         /* Use the corresponding method from the base type to avoid boxing */
8498                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8499                                         g_assert (base_type);
8500                                         constrained_class = mono_class_from_mono_type (base_type);
8501                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8502                                         g_assert (cmethod);
8503                                 }
8504                         }
8505
8506                         if (!dont_verify && !cfg->skip_visibility) {
8507                                 MonoMethod *target_method = cil_method;
8508                                 if (method->is_inflated) {
8509                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8510                                         CHECK_CFG_ERROR;
8511                                 }
8512                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8513                                         !mono_method_can_access_method (method, cil_method))
8514                                         emit_method_access_failure (cfg, method, cil_method);
8515                         }
8516
8517                         if (mono_security_core_clr_enabled ())
8518                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8519
8520                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8521                                 /* MS.NET seems to silently convert this to a callvirt */
8522                                 virtual_ = 1;
8523
8524                         {
8525                                 /*
8526                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8527                                  * converts to a callvirt.
8528                                  *
8529                                  * tests/bug-515884.il is an example of this behavior
8530                                  */
8531                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8532                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8533                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8534                                         virtual_ = 1;
8535                         }
8536
8537                         if (!cmethod->klass->inited)
8538                                 if (!mono_class_init (cmethod->klass))
8539                                         TYPE_LOAD_ERROR (cmethod->klass);
8540
8541                         fsig = mono_method_signature (cmethod);
8542                         if (!fsig)
8543                                 LOAD_ERROR;
8544                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8545                                 mini_class_is_system_array (cmethod->klass)) {
8546                                 array_rank = cmethod->klass->rank;
8547                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8548                                 direct_icall = TRUE;
8549                         } else if (fsig->pinvoke) {
8550                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8551                                 fsig = mono_method_signature (wrapper);
8552                         } else if (constrained_class) {
8553                         } else {
8554                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8555                                 CHECK_CFG_ERROR;
8556                         }
8557
8558                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8559                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8560
8561                         /* See code below */
8562                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8563                                 MonoBasicBlock *tbb;
8564
8565                                 GET_BBLOCK (cfg, tbb, ip + 5);
8566                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8567                                         /*
8568                                          * We want to extend the try block to cover the call, but we can't do it if the
8569                                          * call is made directly since its followed by an exception check.
8570                                          */
8571                                         direct_icall = FALSE;
8572                                 }
8573                         }
8574
8575                         mono_save_token_info (cfg, image, token, cil_method);
8576
8577                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8578                                 need_seq_point = TRUE;
8579
8580                         /* Don't support calls made using type arguments for now */
8581                         /*
8582                           if (cfg->gsharedvt) {
8583                           if (mini_is_gsharedvt_signature (fsig))
8584                           GSHAREDVT_FAILURE (*ip);
8585                           }
8586                         */
8587
8588                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8589                                 g_assert_not_reached ();
8590
8591                         n = fsig->param_count + fsig->hasthis;
8592
8593                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8594                                 UNVERIFIED;
8595
8596                         if (!cfg->gshared)
8597                                 g_assert (!mono_method_check_context_used (cmethod));
8598
8599                         CHECK_STACK (n);
8600
8601                         //g_assert (!virtual_ || fsig->hasthis);
8602
8603                         sp -= n;
8604
8605                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8606                                 cfg->cbb->out_of_line = TRUE;
8607
8608                         /*
8609                          * We have the `constrained.' prefix opcode.
8610                          */
8611                         if (constrained_class) {
8612                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8613                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8614                                                 /* The 'Own method' case below */
8615                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8616                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8617                                         } else {
8618                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8619                                                 CHECK_CFG_EXCEPTION;
8620                                                 g_assert (ins);
8621                                                 goto call_end;
8622                                         }
8623                                 }
8624
8625                                 if (constrained_partial_call) {
8626                                         gboolean need_box = TRUE;
8627
8628                                         /*
8629                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8630                                          * called method is not known at compile time either. The called method could end up being
8631                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8632                                          * to box the receiver.
8633                                          * A simple solution would be to box always and make a normal virtual call, but that would
8634                                          * be bad performance wise.
8635                                          */
8636                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8637                                                 /*
8638                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8639                                                  */
8640                                                 need_box = FALSE;
8641                                         }
8642
8643                                         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)) {
8644                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8645                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8646                                                 ins->klass = constrained_class;
8647                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8648                                                 CHECK_CFG_EXCEPTION;
8649                                         } else if (need_box) {
8650                                                 MonoInst *box_type;
8651                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8652                                                 MonoInst *nonbox_call;
8653
8654                                                 /*
8655                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8656                                                  * if needed.
8657                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8658                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8659                                                  */
8660                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8661
8662                                                 NEW_BBLOCK (cfg, is_ref_bb);
8663                                                 NEW_BBLOCK (cfg, end_bb);
8664
8665                                                 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);
8666                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8667                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8668
8669                                                 /* Non-ref case */
8670                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8671
8672                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8673
8674                                                 /* Ref case */
8675                                                 MONO_START_BB (cfg, is_ref_bb);
8676                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8677                                                 ins->klass = constrained_class;
8678                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8679                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8680
8681                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8682
8683                                                 MONO_START_BB (cfg, end_bb);
8684                                                 cfg->cbb = end_bb;
8685
8686                                                 nonbox_call->dreg = ins->dreg;
8687                                                 goto call_end;
8688                                         } else {
8689                                                 g_assert (mono_class_is_interface (cmethod->klass));
8690                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8691                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8692                                                 goto call_end;
8693                                         }
8694                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8695                                         /*
8696                                          * The type parameter is instantiated as a valuetype,
8697                                          * but that type doesn't override the method we're
8698                                          * calling, so we need to box `this'.
8699                                          */
8700                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8701                                         ins->klass = constrained_class;
8702                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8703                                         CHECK_CFG_EXCEPTION;
8704                                 } else if (!constrained_class->valuetype) {
8705                                         int dreg = alloc_ireg_ref (cfg);
8706
8707                                         /*
8708                                          * The type parameter is instantiated as a reference
8709                                          * type.  We have a managed pointer on the stack, so
8710                                          * we need to dereference it here.
8711                                          */
8712                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8713                                         ins->type = STACK_OBJ;
8714                                         sp [0] = ins;
8715                                 } else {
8716                                         if (cmethod->klass->valuetype) {
8717                                                 /* Own method */
8718                                         } else {
8719                                                 /* Interface method */
8720                                                 int ioffset, slot;
8721
8722                                                 mono_class_setup_vtable (constrained_class);
8723                                                 CHECK_TYPELOAD (constrained_class);
8724                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8725                                                 if (ioffset == -1)
8726                                                         TYPE_LOAD_ERROR (constrained_class);
8727                                                 slot = mono_method_get_vtable_slot (cmethod);
8728                                                 if (slot == -1)
8729                                                         TYPE_LOAD_ERROR (cmethod->klass);
8730                                                 cmethod = constrained_class->vtable [ioffset + slot];
8731
8732                                                 if (cmethod->klass == mono_defaults.enum_class) {
8733                                                         /* Enum implements some interfaces, so treat this as the first case */
8734                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8735                                                         ins->klass = constrained_class;
8736                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8737                                                         CHECK_CFG_EXCEPTION;
8738                                                 }
8739                                         }
8740                                         virtual_ = 0;
8741                                 }
8742                                 constrained_class = NULL;
8743                         }
8744
8745                         if (check_call_signature (cfg, fsig, sp))
8746                                 UNVERIFIED;
8747
8748                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8749                                 delegate_invoke = TRUE;
8750
8751                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8752                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8753                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8754                                         emit_widen = FALSE;
8755                                 }
8756
8757                                 goto call_end;
8758                         }
8759
8760                         /*
8761                          * If the callee is a shared method, then its static cctor
8762                          * might not get called after the call was patched.
8763                          */
8764                         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)) {
8765                                 emit_class_init (cfg, cmethod->klass);
8766                                 CHECK_TYPELOAD (cmethod->klass);
8767                         }
8768
8769                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8770
8771                         if (cfg->gshared) {
8772                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8773
8774                                 context_used = mini_method_check_context_used (cfg, cmethod);
8775
8776                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8777                                         /* Generic method interface
8778                                            calls are resolved via a
8779                                            helper function and don't
8780                                            need an imt. */
8781                                         if (!cmethod_context || !cmethod_context->method_inst)
8782                                                 pass_imt_from_rgctx = TRUE;
8783                                 }
8784
8785                                 /*
8786                                  * If a shared method calls another
8787                                  * shared method then the caller must
8788                                  * have a generic sharing context
8789                                  * because the magic trampoline
8790                                  * requires it.  FIXME: We shouldn't
8791                                  * have to force the vtable/mrgctx
8792                                  * variable here.  Instead there
8793                                  * should be a flag in the cfg to
8794                                  * request a generic sharing context.
8795                                  */
8796                                 if (context_used &&
8797                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8798                                         mono_get_vtable_var (cfg);
8799                         }
8800
8801                         if (pass_vtable) {
8802                                 if (context_used) {
8803                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8804                                 } else {
8805                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8806
8807                                         CHECK_TYPELOAD (cmethod->klass);
8808                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8809                                 }
8810                         }
8811
8812                         if (pass_mrgctx) {
8813                                 g_assert (!vtable_arg);
8814
8815                                 if (!cfg->compile_aot) {
8816                                         /*
8817                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8818                                          * for type load errors before.
8819                                          */
8820                                         mono_class_setup_vtable (cmethod->klass);
8821                                         CHECK_TYPELOAD (cmethod->klass);
8822                                 }
8823
8824                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8825
8826                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8827                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8828                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8829                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8830                                         if (virtual_)
8831                                                 check_this = TRUE;
8832                                         virtual_ = 0;
8833                                 }
8834                         }
8835
8836                         if (pass_imt_from_rgctx) {
8837                                 g_assert (!pass_vtable);
8838
8839                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8840                                         cmethod, MONO_RGCTX_INFO_METHOD);
8841                         }
8842
8843                         if (check_this)
8844                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8845
8846                         /* Calling virtual generic methods */
8847                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8848                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8849                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8850                             fsig->generic_param_count &&
8851                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8852                                 !cfg->llvm_only) {
8853                                 MonoInst *this_temp, *this_arg_temp, *store;
8854                                 MonoInst *iargs [4];
8855
8856                                 g_assert (fsig->is_inflated);
8857
8858                                 /* Prevent inlining of methods that contain indirect calls */
8859                                 INLINE_FAILURE ("virtual generic call");
8860
8861                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8862                                         GSHAREDVT_FAILURE (*ip);
8863
8864                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8865                                         g_assert (!imt_arg);
8866                                         if (!context_used)
8867                                                 g_assert (cmethod->is_inflated);
8868                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8869                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8870                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8871                                 } else {
8872                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8873                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8874                                         MONO_ADD_INS (cfg->cbb, store);
8875
8876                                         /* FIXME: This should be a managed pointer */
8877                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8878
8879                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8880                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8881                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8882                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8883                                         addr = mono_emit_jit_icall (cfg,
8884                                                                                                 mono_helper_compile_generic_method, iargs);
8885
8886                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8887
8888                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8889                                 }
8890
8891                                 goto call_end;
8892                         }
8893
8894                         /*
8895                          * Implement a workaround for the inherent races involved in locking:
8896                          * Monitor.Enter ()
8897                          * try {
8898                          * } finally {
8899                          *    Monitor.Exit ()
8900                          * }
8901                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8902                          * try block, the Exit () won't be executed, see:
8903                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8904                          * To work around this, we extend such try blocks to include the last x bytes
8905                          * of the Monitor.Enter () call.
8906                          */
8907                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8908                                 MonoBasicBlock *tbb;
8909
8910                                 GET_BBLOCK (cfg, tbb, ip + 5);
8911                                 /*
8912                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8913                                  * from Monitor.Enter like ArgumentNullException.
8914                                  */
8915                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8916                                         /* Mark this bblock as needing to be extended */
8917                                         tbb->extend_try_block = TRUE;
8918                                 }
8919                         }
8920
8921                         /* Conversion to a JIT intrinsic */
8922                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8923                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8924                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8925                                         emit_widen = FALSE;
8926                                 }
8927                                 goto call_end;
8928                         }
8929                         CHECK_CFG_ERROR;
8930
8931                         /* Inlining */
8932                         if ((cfg->opt & MONO_OPT_INLINE) &&
8933                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8934                             mono_method_check_inlining (cfg, cmethod)) {
8935                                 int costs;
8936                                 gboolean always = FALSE;
8937
8938                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8939                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8940                                         /* Prevent inlining of methods that call wrappers */
8941                                         INLINE_FAILURE ("wrapper call");
8942                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8943                                         always = TRUE;
8944                                 }
8945
8946                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8947                                 if (costs) {
8948                                         cfg->real_offset += 5;
8949
8950                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8951                                                 /* *sp is already set by inline_method */
8952                                                 sp++;
8953                                                 push_res = FALSE;
8954                                         }
8955
8956                                         inline_costs += costs;
8957
8958                                         goto call_end;
8959                                 }
8960                         }
8961
8962                         /* Tail recursion elimination */
8963                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8964                                 gboolean has_vtargs = FALSE;
8965                                 int i;
8966
8967                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8968                                 INLINE_FAILURE ("tail call");
8969
8970                                 /* keep it simple */
8971                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8972                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8973                                                 has_vtargs = TRUE;
8974                                 }
8975
8976                                 if (!has_vtargs) {
8977                                         if (need_seq_point) {
8978                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8979                                                 need_seq_point = FALSE;
8980                                         }
8981                                         for (i = 0; i < n; ++i)
8982                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8983                                         MONO_INST_NEW (cfg, ins, OP_BR);
8984                                         MONO_ADD_INS (cfg->cbb, ins);
8985                                         tblock = start_bblock->out_bb [0];
8986                                         link_bblock (cfg, cfg->cbb, tblock);
8987                                         ins->inst_target_bb = tblock;
8988                                         start_new_bblock = 1;
8989
8990                                         /* skip the CEE_RET, too */
8991                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8992                                                 skip_ret = TRUE;
8993                                         push_res = FALSE;
8994                                         goto call_end;
8995                                 }
8996                         }
8997
8998                         inline_costs += 10 * num_calls++;
8999
9000                         /*
9001                          * Synchronized wrappers.
9002                          * Its hard to determine where to replace a method with its synchronized
9003                          * wrapper without causing an infinite recursion. The current solution is
9004                          * to add the synchronized wrapper in the trampolines, and to
9005                          * change the called method to a dummy wrapper, and resolve that wrapper
9006                          * to the real method in mono_jit_compile_method ().
9007                          */
9008                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9009                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9010                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9011                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9012                         }
9013
9014                         /*
9015                          * Making generic calls out of gsharedvt methods.
9016                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9017                          * patching gshared method addresses into a gsharedvt method.
9018                          */
9019                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
9020                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9021                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9022                                 MonoRgctxInfoType info_type;
9023
9024                                 if (virtual_) {
9025                                         //if (mono_class_is_interface (cmethod->klass))
9026                                                 //GSHAREDVT_FAILURE (*ip);
9027                                         // disable for possible remoting calls
9028                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9029                                                 GSHAREDVT_FAILURE (*ip);
9030                                         if (fsig->generic_param_count) {
9031                                                 /* virtual generic call */
9032                                                 g_assert (!imt_arg);
9033                                                 /* Same as the virtual generic case above */
9034                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9035                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9036                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9037                                                 vtable_arg = NULL;
9038                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
9039                                                 /* This can happen when we call a fully instantiated iface method */
9040                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9041                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9042                                                 vtable_arg = NULL;
9043                                         }
9044                                 }
9045
9046                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9047                                         keep_this_alive = sp [0];
9048
9049                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9050                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9051                                 else
9052                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9053                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9054
9055                                 if (cfg->llvm_only) {
9056                                         // FIXME: Avoid initializing vtable_arg
9057                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9058                                 } else {
9059                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9060                                 }
9061                                 goto call_end;
9062                         }
9063
9064                         /* Generic sharing */
9065
9066                         /*
9067                          * Use this if the callee is gsharedvt sharable too, since
9068                          * at runtime we might find an instantiation so the call cannot
9069                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9070                          */
9071                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9072                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9073                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9074                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9075                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9076                                 INLINE_FAILURE ("gshared");
9077
9078                                 g_assert (cfg->gshared && cmethod);
9079                                 g_assert (!addr);
9080
9081                                 /*
9082                                  * We are compiling a call to a
9083                                  * generic method from shared code,
9084                                  * which means that we have to look up
9085                                  * the method in the rgctx and do an
9086                                  * indirect call.
9087                                  */
9088                                 if (fsig->hasthis)
9089                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9090
9091                                 if (cfg->llvm_only) {
9092                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9093                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9094                                         else
9095                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9096                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9097                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9098                                 } else {
9099                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9100                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9101                                 }
9102                                 goto call_end;
9103                         }
9104
9105                         /* Direct calls to icalls */
9106                         if (direct_icall) {
9107                                 MonoMethod *wrapper;
9108                                 int costs;
9109
9110                                 /* Inline the wrapper */
9111                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9112
9113                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9114                                 g_assert (costs > 0);
9115                                 cfg->real_offset += 5;
9116
9117                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9118                                         /* *sp is already set by inline_method */
9119                                         sp++;
9120                                         push_res = FALSE;
9121                                 }
9122
9123                                 inline_costs += costs;
9124
9125                                 goto call_end;
9126                         }
9127
9128                         /* Array methods */
9129                         if (array_rank) {
9130                                 MonoInst *addr;
9131
9132                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9133                                         MonoInst *val = sp [fsig->param_count];
9134
9135                                         if (val->type == STACK_OBJ) {
9136                                                 MonoInst *iargs [2];
9137
9138                                                 iargs [0] = sp [0];
9139                                                 iargs [1] = val;
9140
9141                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9142                                         }
9143
9144                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9145                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9146                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9147                                                 mini_emit_write_barrier (cfg, addr, val);
9148                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9149                                                 GSHAREDVT_FAILURE (*ip);
9150                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9151                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9152
9153                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9154                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9155                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9156                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9157                                         CHECK_TYPELOAD (cmethod->klass);
9158
9159                                         readonly = FALSE;
9160                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9161                                         ins = addr;
9162                                 } else {
9163                                         g_assert_not_reached ();
9164                                 }
9165
9166                                 emit_widen = FALSE;
9167                                 goto call_end;
9168                         }
9169
9170                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9171                         if (ins)
9172                                 goto call_end;
9173
9174                         /* Tail prefix / tail call optimization */
9175
9176                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9177                         /* FIXME: runtime generic context pointer for jumps? */
9178                         /* FIXME: handle this for generic sharing eventually */
9179                         if ((ins_flag & MONO_INST_TAILCALL) &&
9180                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9181                                 supported_tail_call = TRUE;
9182
9183                         if (supported_tail_call) {
9184                                 MonoCallInst *call;
9185
9186                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9187                                 INLINE_FAILURE ("tail call");
9188
9189                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9190
9191                                 if (cfg->backend->have_op_tail_call) {
9192                                         /* Handle tail calls similarly to normal calls */
9193                                         tail_call = TRUE;
9194                                 } else {
9195                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9196
9197                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9198                                         call->tail_call = TRUE;
9199                                         call->method = cmethod;
9200                                         call->signature = mono_method_signature (cmethod);
9201
9202                                         /*
9203                                          * We implement tail calls by storing the actual arguments into the
9204                                          * argument variables, then emitting a CEE_JMP.
9205                                          */
9206                                         for (i = 0; i < n; ++i) {
9207                                                 /* Prevent argument from being register allocated */
9208                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9209                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9210                                         }
9211                                         ins = (MonoInst*)call;
9212                                         ins->inst_p0 = cmethod;
9213                                         ins->inst_p1 = arg_array [0];
9214                                         MONO_ADD_INS (cfg->cbb, ins);
9215                                         link_bblock (cfg, cfg->cbb, end_bblock);
9216                                         start_new_bblock = 1;
9217
9218                                         // FIXME: Eliminate unreachable epilogs
9219
9220                                         /*
9221                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9222                                          * only reachable from this call.
9223                                          */
9224                                         GET_BBLOCK (cfg, tblock, ip + 5);
9225                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9226                                                 skip_ret = TRUE;
9227                                         push_res = FALSE;
9228
9229                                         goto call_end;
9230                                 }
9231                         }
9232
9233                         /*
9234                          * Virtual calls in llvm-only mode.
9235                          */
9236                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9237                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9238                                 goto call_end;
9239                         }
9240
9241                         /* Common call */
9242                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9243                                 INLINE_FAILURE ("call");
9244                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9245                                                                                           imt_arg, vtable_arg);
9246
9247                         if (tail_call && !cfg->llvm_only) {
9248                                 link_bblock (cfg, cfg->cbb, end_bblock);
9249                                 start_new_bblock = 1;
9250
9251                                 // FIXME: Eliminate unreachable epilogs
9252
9253                                 /*
9254                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9255                                  * only reachable from this call.
9256                                  */
9257                                 GET_BBLOCK (cfg, tblock, ip + 5);
9258                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9259                                         skip_ret = TRUE;
9260                                 push_res = FALSE;
9261                         }
9262
9263                         call_end:
9264
9265                         /* End of call, INS should contain the result of the call, if any */
9266
9267                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9268                                 g_assert (ins);
9269                                 if (emit_widen)
9270                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9271                                 else
9272                                         *sp++ = ins;
9273                         }
9274
9275                         if (keep_this_alive) {
9276                                 MonoInst *dummy_use;
9277
9278                                 /* See mono_emit_method_call_full () */
9279                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9280                         }
9281
9282                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9283                                 /*
9284                                  * Clang can convert these calls to tail calls which screw up the stack
9285                                  * walk. This happens even when the -fno-optimize-sibling-calls
9286                                  * option is passed to clang.
9287                                  * Work around this by emitting a dummy call.
9288                                  */
9289                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9290                         }
9291
9292                         CHECK_CFG_EXCEPTION;
9293
9294                         ip += 5;
9295                         if (skip_ret) {
9296                                 g_assert (*ip == CEE_RET);
9297                                 ip += 1;
9298                         }
9299                         ins_flag = 0;
9300                         constrained_class = NULL;
9301                         if (need_seq_point)
9302                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9303                         break;
9304                 }
9305                 case CEE_RET:
9306                         if (cfg->method != method) {
9307                                 /* return from inlined method */
9308                                 /*
9309                                  * If in_count == 0, that means the ret is unreachable due to
9310                                  * being preceeded by a throw. In that case, inline_method () will
9311                                  * handle setting the return value
9312                                  * (test case: test_0_inline_throw ()).
9313                                  */
9314                                 if (return_var && cfg->cbb->in_count) {
9315                                         MonoType *ret_type = mono_method_signature (method)->ret;
9316
9317                                         MonoInst *store;
9318                                         CHECK_STACK (1);
9319                                         --sp;
9320
9321                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9322                                                 UNVERIFIED;
9323
9324                                         //g_assert (returnvar != -1);
9325                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9326                                         cfg->ret_var_set = TRUE;
9327                                 }
9328                         } else {
9329                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9330
9331                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9332                                         emit_pop_lmf (cfg);
9333
9334                                 if (cfg->ret) {
9335                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9336
9337                                         if (seq_points && !sym_seq_points) {
9338                                                 /*
9339                                                  * Place a seq point here too even through the IL stack is not
9340                                                  * empty, so a step over on
9341                                                  * call <FOO>
9342                                                  * ret
9343                                                  * will work correctly.
9344                                                  */
9345                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9346                                                 MONO_ADD_INS (cfg->cbb, ins);
9347                                         }
9348
9349                                         g_assert (!return_var);
9350                                         CHECK_STACK (1);
9351                                         --sp;
9352
9353                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9354                                                 UNVERIFIED;
9355
9356                                         emit_setret (cfg, *sp);
9357                                 }
9358                         }
9359                         if (sp != stack_start)
9360                                 UNVERIFIED;
9361                         MONO_INST_NEW (cfg, ins, OP_BR);
9362                         ip++;
9363                         ins->inst_target_bb = end_bblock;
9364                         MONO_ADD_INS (cfg->cbb, ins);
9365                         link_bblock (cfg, cfg->cbb, end_bblock);
9366                         start_new_bblock = 1;
9367                         break;
9368                 case CEE_BR_S:
9369                         CHECK_OPSIZE (2);
9370                         MONO_INST_NEW (cfg, ins, OP_BR);
9371                         ip++;
9372                         target = ip + 1 + (signed char)(*ip);
9373                         ++ip;
9374                         GET_BBLOCK (cfg, tblock, target);
9375                         link_bblock (cfg, cfg->cbb, tblock);
9376                         ins->inst_target_bb = tblock;
9377                         if (sp != stack_start) {
9378                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9379                                 sp = stack_start;
9380                                 CHECK_UNVERIFIABLE (cfg);
9381                         }
9382                         MONO_ADD_INS (cfg->cbb, ins);
9383                         start_new_bblock = 1;
9384                         inline_costs += BRANCH_COST;
9385                         break;
9386                 case CEE_BEQ_S:
9387                 case CEE_BGE_S:
9388                 case CEE_BGT_S:
9389                 case CEE_BLE_S:
9390                 case CEE_BLT_S:
9391                 case CEE_BNE_UN_S:
9392                 case CEE_BGE_UN_S:
9393                 case CEE_BGT_UN_S:
9394                 case CEE_BLE_UN_S:
9395                 case CEE_BLT_UN_S:
9396                         CHECK_OPSIZE (2);
9397                         CHECK_STACK (2);
9398                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9399                         ip++;
9400                         target = ip + 1 + *(signed char*)ip;
9401                         ip++;
9402
9403                         ADD_BINCOND (NULL);
9404
9405                         sp = stack_start;
9406                         inline_costs += BRANCH_COST;
9407                         break;
9408                 case CEE_BR:
9409                         CHECK_OPSIZE (5);
9410                         MONO_INST_NEW (cfg, ins, OP_BR);
9411                         ip++;
9412
9413                         target = ip + 4 + (gint32)read32(ip);
9414                         ip += 4;
9415                         GET_BBLOCK (cfg, tblock, target);
9416                         link_bblock (cfg, cfg->cbb, tblock);
9417                         ins->inst_target_bb = tblock;
9418                         if (sp != stack_start) {
9419                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9420                                 sp = stack_start;
9421                                 CHECK_UNVERIFIABLE (cfg);
9422                         }
9423
9424                         MONO_ADD_INS (cfg->cbb, ins);
9425
9426                         start_new_bblock = 1;
9427                         inline_costs += BRANCH_COST;
9428                         break;
9429                 case CEE_BRFALSE_S:
9430                 case CEE_BRTRUE_S:
9431                 case CEE_BRFALSE:
9432                 case CEE_BRTRUE: {
9433                         MonoInst *cmp;
9434                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9435                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9436                         guint32 opsize = is_short ? 1 : 4;
9437
9438                         CHECK_OPSIZE (opsize);
9439                         CHECK_STACK (1);
9440                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9441                                 UNVERIFIED;
9442                         ip ++;
9443                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9444                         ip += opsize;
9445
9446                         sp--;
9447
9448                         GET_BBLOCK (cfg, tblock, target);
9449                         link_bblock (cfg, cfg->cbb, tblock);
9450                         GET_BBLOCK (cfg, tblock, ip);
9451                         link_bblock (cfg, cfg->cbb, tblock);
9452
9453                         if (sp != stack_start) {
9454                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9455                                 CHECK_UNVERIFIABLE (cfg);
9456                         }
9457
9458                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9459                         cmp->sreg1 = sp [0]->dreg;
9460                         type_from_op (cfg, cmp, sp [0], NULL);
9461                         CHECK_TYPE (cmp);
9462
9463 #if SIZEOF_REGISTER == 4
9464                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9465                                 /* Convert it to OP_LCOMPARE */
9466                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9467                                 ins->type = STACK_I8;
9468                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9469                                 ins->inst_l = 0;
9470                                 MONO_ADD_INS (cfg->cbb, ins);
9471                                 cmp->opcode = OP_LCOMPARE;
9472                                 cmp->sreg2 = ins->dreg;
9473                         }
9474 #endif
9475                         MONO_ADD_INS (cfg->cbb, cmp);
9476
9477                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9478                         type_from_op (cfg, ins, sp [0], NULL);
9479                         MONO_ADD_INS (cfg->cbb, ins);
9480                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9481                         GET_BBLOCK (cfg, tblock, target);
9482                         ins->inst_true_bb = tblock;
9483                         GET_BBLOCK (cfg, tblock, ip);
9484                         ins->inst_false_bb = tblock;
9485                         start_new_bblock = 2;
9486
9487                         sp = stack_start;
9488                         inline_costs += BRANCH_COST;
9489                         break;
9490                 }
9491                 case CEE_BEQ:
9492                 case CEE_BGE:
9493                 case CEE_BGT:
9494                 case CEE_BLE:
9495                 case CEE_BLT:
9496                 case CEE_BNE_UN:
9497                 case CEE_BGE_UN:
9498                 case CEE_BGT_UN:
9499                 case CEE_BLE_UN:
9500                 case CEE_BLT_UN:
9501                         CHECK_OPSIZE (5);
9502                         CHECK_STACK (2);
9503                         MONO_INST_NEW (cfg, ins, *ip);
9504                         ip++;
9505                         target = ip + 4 + (gint32)read32(ip);
9506                         ip += 4;
9507
9508                         ADD_BINCOND (NULL);
9509
9510                         sp = stack_start;
9511                         inline_costs += BRANCH_COST;
9512                         break;
9513                 case CEE_SWITCH: {
9514                         MonoInst *src1;
9515                         MonoBasicBlock **targets;
9516                         MonoBasicBlock *default_bblock;
9517                         MonoJumpInfoBBTable *table;
9518                         int offset_reg = alloc_preg (cfg);
9519                         int target_reg = alloc_preg (cfg);
9520                         int table_reg = alloc_preg (cfg);
9521                         int sum_reg = alloc_preg (cfg);
9522                         gboolean use_op_switch;
9523
9524                         CHECK_OPSIZE (5);
9525                         CHECK_STACK (1);
9526                         n = read32 (ip + 1);
9527                         --sp;
9528                         src1 = sp [0];
9529                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9530                                 UNVERIFIED;
9531
9532                         ip += 5;
9533                         CHECK_OPSIZE (n * sizeof (guint32));
9534                         target = ip + n * sizeof (guint32);
9535
9536                         GET_BBLOCK (cfg, default_bblock, target);
9537                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9538
9539                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9540                         for (i = 0; i < n; ++i) {
9541                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9542                                 targets [i] = tblock;
9543                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9544                                 ip += 4;
9545                         }
9546
9547                         if (sp != stack_start) {
9548                                 /*
9549                                  * Link the current bb with the targets as well, so handle_stack_args
9550                                  * will set their in_stack correctly.
9551                                  */
9552                                 link_bblock (cfg, cfg->cbb, default_bblock);
9553                                 for (i = 0; i < n; ++i)
9554                                         link_bblock (cfg, cfg->cbb, targets [i]);
9555
9556                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9557                                 sp = stack_start;
9558                                 CHECK_UNVERIFIABLE (cfg);
9559
9560                                 /* Undo the links */
9561                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9562                                 for (i = 0; i < n; ++i)
9563                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9564                         }
9565
9566                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9567                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9568
9569                         for (i = 0; i < n; ++i)
9570                                 link_bblock (cfg, cfg->cbb, targets [i]);
9571
9572                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9573                         table->table = targets;
9574                         table->table_size = n;
9575
9576                         use_op_switch = FALSE;
9577 #ifdef TARGET_ARM
9578                         /* ARM implements SWITCH statements differently */
9579                         /* FIXME: Make it use the generic implementation */
9580                         if (!cfg->compile_aot)
9581                                 use_op_switch = TRUE;
9582 #endif
9583
9584                         if (COMPILE_LLVM (cfg))
9585                                 use_op_switch = TRUE;
9586
9587                         cfg->cbb->has_jump_table = 1;
9588
9589                         if (use_op_switch) {
9590                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9591                                 ins->sreg1 = src1->dreg;
9592                                 ins->inst_p0 = table;
9593                                 ins->inst_many_bb = targets;
9594                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9595                                 MONO_ADD_INS (cfg->cbb, ins);
9596                         } else {
9597                                 if (sizeof (gpointer) == 8)
9598                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9599                                 else
9600                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9601
9602 #if SIZEOF_REGISTER == 8
9603                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9604                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9605 #endif
9606
9607                                 if (cfg->compile_aot) {
9608                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9609                                 } else {
9610                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9611                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9612                                         ins->inst_p0 = table;
9613                                         ins->dreg = table_reg;
9614                                         MONO_ADD_INS (cfg->cbb, ins);
9615                                 }
9616
9617                                 /* FIXME: Use load_memindex */
9618                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9619                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9620                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9621                         }
9622                         start_new_bblock = 1;
9623                         inline_costs += (BRANCH_COST * 2);
9624                         break;
9625                 }
9626                 case CEE_LDIND_I1:
9627                 case CEE_LDIND_U1:
9628                 case CEE_LDIND_I2:
9629                 case CEE_LDIND_U2:
9630                 case CEE_LDIND_I4:
9631                 case CEE_LDIND_U4:
9632                 case CEE_LDIND_I8:
9633                 case CEE_LDIND_I:
9634                 case CEE_LDIND_R4:
9635                 case CEE_LDIND_R8:
9636                 case CEE_LDIND_REF:
9637                         CHECK_STACK (1);
9638                         --sp;
9639
9640                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9641                         *sp++ = ins;
9642                         ins_flag = 0;
9643                         ++ip;
9644                         break;
9645                 case CEE_STIND_REF:
9646                 case CEE_STIND_I1:
9647                 case CEE_STIND_I2:
9648                 case CEE_STIND_I4:
9649                 case CEE_STIND_I8:
9650                 case CEE_STIND_R4:
9651                 case CEE_STIND_R8:
9652                 case CEE_STIND_I:
9653                         CHECK_STACK (2);
9654                         sp -= 2;
9655
9656                         if (ins_flag & MONO_INST_VOLATILE) {
9657                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9658                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9659                         }
9660
9661                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9662                         ins->flags |= ins_flag;
9663                         ins_flag = 0;
9664
9665                         MONO_ADD_INS (cfg->cbb, ins);
9666
9667                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9668                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9669
9670                         inline_costs += 1;
9671                         ++ip;
9672                         break;
9673
9674                 case CEE_MUL:
9675                         CHECK_STACK (2);
9676
9677                         MONO_INST_NEW (cfg, ins, (*ip));
9678                         sp -= 2;
9679                         ins->sreg1 = sp [0]->dreg;
9680                         ins->sreg2 = sp [1]->dreg;
9681                         type_from_op (cfg, ins, sp [0], sp [1]);
9682                         CHECK_TYPE (ins);
9683                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9684
9685                         /* Use the immediate opcodes if possible */
9686                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9687                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9688                                 if (imm_opcode != -1) {
9689                                         ins->opcode = imm_opcode;
9690                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9691                                         ins->sreg2 = -1;
9692
9693                                         NULLIFY_INS (sp [1]);
9694                                 }
9695                         }
9696
9697                         MONO_ADD_INS ((cfg)->cbb, (ins));
9698
9699                         *sp++ = mono_decompose_opcode (cfg, ins);
9700                         ip++;
9701                         break;
9702                 case CEE_ADD:
9703                 case CEE_SUB:
9704                 case CEE_DIV:
9705                 case CEE_DIV_UN:
9706                 case CEE_REM:
9707                 case CEE_REM_UN:
9708                 case CEE_AND:
9709                 case CEE_OR:
9710                 case CEE_XOR:
9711                 case CEE_SHL:
9712                 case CEE_SHR:
9713                 case CEE_SHR_UN:
9714                         CHECK_STACK (2);
9715
9716                         MONO_INST_NEW (cfg, ins, (*ip));
9717                         sp -= 2;
9718                         ins->sreg1 = sp [0]->dreg;
9719                         ins->sreg2 = sp [1]->dreg;
9720                         type_from_op (cfg, ins, sp [0], sp [1]);
9721                         CHECK_TYPE (ins);
9722                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9723                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9724
9725                         /* FIXME: Pass opcode to is_inst_imm */
9726
9727                         /* Use the immediate opcodes if possible */
9728                         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)) {
9729                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9730                                 if (imm_opcode != -1) {
9731                                         ins->opcode = imm_opcode;
9732                                         if (sp [1]->opcode == OP_I8CONST) {
9733 #if SIZEOF_REGISTER == 8
9734                                                 ins->inst_imm = sp [1]->inst_l;
9735 #else
9736                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9737                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9738 #endif
9739                                         }
9740                                         else
9741                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9742                                         ins->sreg2 = -1;
9743
9744                                         /* Might be followed by an instruction added by add_widen_op */
9745                                         if (sp [1]->next == NULL)
9746                                                 NULLIFY_INS (sp [1]);
9747                                 }
9748                         }
9749                         MONO_ADD_INS ((cfg)->cbb, (ins));
9750
9751                         *sp++ = mono_decompose_opcode (cfg, ins);
9752                         ip++;
9753                         break;
9754                 case CEE_NEG:
9755                 case CEE_NOT:
9756                 case CEE_CONV_I1:
9757                 case CEE_CONV_I2:
9758                 case CEE_CONV_I4:
9759                 case CEE_CONV_R4:
9760                 case CEE_CONV_R8:
9761                 case CEE_CONV_U4:
9762                 case CEE_CONV_I8:
9763                 case CEE_CONV_U8:
9764                 case CEE_CONV_OVF_I8:
9765                 case CEE_CONV_OVF_U8:
9766                 case CEE_CONV_R_UN:
9767                         CHECK_STACK (1);
9768
9769                         /* Special case this earlier so we have long constants in the IR */
9770                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9771                                 int data = sp [-1]->inst_c0;
9772                                 sp [-1]->opcode = OP_I8CONST;
9773                                 sp [-1]->type = STACK_I8;
9774 #if SIZEOF_REGISTER == 8
9775                                 if ((*ip) == CEE_CONV_U8)
9776                                         sp [-1]->inst_c0 = (guint32)data;
9777                                 else
9778                                         sp [-1]->inst_c0 = data;
9779 #else
9780                                 sp [-1]->inst_ls_word = data;
9781                                 if ((*ip) == CEE_CONV_U8)
9782                                         sp [-1]->inst_ms_word = 0;
9783                                 else
9784                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9785 #endif
9786                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9787                         }
9788                         else {
9789                                 ADD_UNOP (*ip);
9790                         }
9791                         ip++;
9792                         break;
9793                 case CEE_CONV_OVF_I4:
9794                 case CEE_CONV_OVF_I1:
9795                 case CEE_CONV_OVF_I2:
9796                 case CEE_CONV_OVF_I:
9797                 case CEE_CONV_OVF_U:
9798                         CHECK_STACK (1);
9799
9800                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9801                                 ADD_UNOP (CEE_CONV_OVF_I8);
9802                                 ADD_UNOP (*ip);
9803                         } else {
9804                                 ADD_UNOP (*ip);
9805                         }
9806                         ip++;
9807                         break;
9808                 case CEE_CONV_OVF_U1:
9809                 case CEE_CONV_OVF_U2:
9810                 case CEE_CONV_OVF_U4:
9811                         CHECK_STACK (1);
9812
9813                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9814                                 ADD_UNOP (CEE_CONV_OVF_U8);
9815                                 ADD_UNOP (*ip);
9816                         } else {
9817                                 ADD_UNOP (*ip);
9818                         }
9819                         ip++;
9820                         break;
9821                 case CEE_CONV_OVF_I1_UN:
9822                 case CEE_CONV_OVF_I2_UN:
9823                 case CEE_CONV_OVF_I4_UN:
9824                 case CEE_CONV_OVF_I8_UN:
9825                 case CEE_CONV_OVF_U1_UN:
9826                 case CEE_CONV_OVF_U2_UN:
9827                 case CEE_CONV_OVF_U4_UN:
9828                 case CEE_CONV_OVF_U8_UN:
9829                 case CEE_CONV_OVF_I_UN:
9830                 case CEE_CONV_OVF_U_UN:
9831                 case CEE_CONV_U2:
9832                 case CEE_CONV_U1:
9833                 case CEE_CONV_I:
9834                 case CEE_CONV_U:
9835                         CHECK_STACK (1);
9836                         ADD_UNOP (*ip);
9837                         CHECK_CFG_EXCEPTION;
9838                         ip++;
9839                         break;
9840                 case CEE_ADD_OVF:
9841                 case CEE_ADD_OVF_UN:
9842                 case CEE_MUL_OVF:
9843                 case CEE_MUL_OVF_UN:
9844                 case CEE_SUB_OVF:
9845                 case CEE_SUB_OVF_UN:
9846                         CHECK_STACK (2);
9847                         ADD_BINOP (*ip);
9848                         ip++;
9849                         break;
9850                 case CEE_CPOBJ:
9851                         GSHAREDVT_FAILURE (*ip);
9852                         CHECK_OPSIZE (5);
9853                         CHECK_STACK (2);
9854                         token = read32 (ip + 1);
9855                         klass = mini_get_class (method, token, generic_context);
9856                         CHECK_TYPELOAD (klass);
9857                         sp -= 2;
9858                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9859                         ins_flag = 0;
9860                         ip += 5;
9861                         break;
9862                 case CEE_LDOBJ: {
9863                         int loc_index = -1;
9864                         int stloc_len = 0;
9865
9866                         CHECK_OPSIZE (5);
9867                         CHECK_STACK (1);
9868                         --sp;
9869                         token = read32 (ip + 1);
9870                         klass = mini_get_class (method, token, generic_context);
9871                         CHECK_TYPELOAD (klass);
9872
9873                         /* Optimize the common ldobj+stloc combination */
9874                         switch (ip [5]) {
9875                         case CEE_STLOC_S:
9876                                 loc_index = ip [6];
9877                                 stloc_len = 2;
9878                                 break;
9879                         case CEE_STLOC_0:
9880                         case CEE_STLOC_1:
9881                         case CEE_STLOC_2:
9882                         case CEE_STLOC_3:
9883                                 loc_index = ip [5] - CEE_STLOC_0;
9884                                 stloc_len = 1;
9885                                 break;
9886                         default:
9887                                 break;
9888                         }
9889
9890                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9891                                 CHECK_LOCAL (loc_index);
9892
9893                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9894                                 ins->dreg = cfg->locals [loc_index]->dreg;
9895                                 ins->flags |= ins_flag;
9896                                 ip += 5;
9897                                 ip += stloc_len;
9898                                 if (ins_flag & MONO_INST_VOLATILE) {
9899                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9900                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9901                                 }
9902                                 ins_flag = 0;
9903                                 break;
9904                         }
9905
9906                         /* Optimize the ldobj+stobj combination */
9907                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9908                                 CHECK_STACK (1);
9909
9910                                 sp --;
9911
9912                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9913
9914                                 ip += 5 + 5;
9915                                 ins_flag = 0;
9916                                 break;
9917                         }
9918
9919                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9920                         *sp++ = ins;
9921
9922                         ip += 5;
9923                         ins_flag = 0;
9924                         inline_costs += 1;
9925                         break;
9926                 }
9927                 case CEE_LDSTR:
9928                         CHECK_STACK_OVF (1);
9929                         CHECK_OPSIZE (5);
9930                         n = read32 (ip + 1);
9931
9932                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9933                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9934                                 ins->type = STACK_OBJ;
9935                                 *sp = ins;
9936                         }
9937                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9938                                 MonoInst *iargs [1];
9939                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9940
9941                                 if (cfg->compile_aot)
9942                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9943                                 else
9944                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9945                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9946                         } else {
9947                                 if (cfg->opt & MONO_OPT_SHARED) {
9948                                         MonoInst *iargs [3];
9949
9950                                         if (cfg->compile_aot) {
9951                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9952                                         }
9953                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9954                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9955                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9956                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9957                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9958                                         CHECK_CFG_ERROR;
9959                                 } else {
9960                                         if (cfg->cbb->out_of_line) {
9961                                                 MonoInst *iargs [2];
9962
9963                                                 if (image == mono_defaults.corlib) {
9964                                                         /*
9965                                                          * Avoid relocations in AOT and save some space by using a
9966                                                          * version of helper_ldstr specialized to mscorlib.
9967                                                          */
9968                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9969                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9970                                                 } else {
9971                                                         /* Avoid creating the string object */
9972                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9973                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9974                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9975                                                 }
9976                                         }
9977                                         else
9978                                         if (cfg->compile_aot) {
9979                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9980                                                 *sp = ins;
9981                                                 MONO_ADD_INS (cfg->cbb, ins);
9982                                         }
9983                                         else {
9984                                                 NEW_PCONST (cfg, ins, NULL);
9985                                                 ins->type = STACK_OBJ;
9986                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9987                                                 CHECK_CFG_ERROR;
9988
9989                                                 if (!ins->inst_p0)
9990                                                         OUT_OF_MEMORY_FAILURE;
9991
9992                                                 *sp = ins;
9993                                                 MONO_ADD_INS (cfg->cbb, ins);
9994                                         }
9995                                 }
9996                         }
9997
9998                         sp++;
9999                         ip += 5;
10000                         break;
10001                 case CEE_NEWOBJ: {
10002                         MonoInst *iargs [2];
10003                         MonoMethodSignature *fsig;
10004                         MonoInst this_ins;
10005                         MonoInst *alloc;
10006                         MonoInst *vtable_arg = NULL;
10007
10008                         CHECK_OPSIZE (5);
10009                         token = read32 (ip + 1);
10010                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10011                         CHECK_CFG_ERROR;
10012
10013                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10014                         CHECK_CFG_ERROR;
10015
10016                         mono_save_token_info (cfg, image, token, cmethod);
10017
10018                         if (!mono_class_init (cmethod->klass))
10019                                 TYPE_LOAD_ERROR (cmethod->klass);
10020
10021                         context_used = mini_method_check_context_used (cfg, cmethod);
10022
10023                         if (mono_security_core_clr_enabled ())
10024                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10025
10026                         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)) {
10027                                 emit_class_init (cfg, cmethod->klass);
10028                                 CHECK_TYPELOAD (cmethod->klass);
10029                         }
10030
10031                         /*
10032                         if (cfg->gsharedvt) {
10033                                 if (mini_is_gsharedvt_variable_signature (sig))
10034                                         GSHAREDVT_FAILURE (*ip);
10035                         }
10036                         */
10037
10038                         n = fsig->param_count;
10039                         CHECK_STACK (n);
10040
10041                         /*
10042                          * Generate smaller code for the common newobj <exception> instruction in
10043                          * argument checking code.
10044                          */
10045                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10046                                 is_exception_class (cmethod->klass) && n <= 2 &&
10047                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10048                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10049                                 MonoInst *iargs [3];
10050
10051                                 sp -= n;
10052
10053                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10054                                 switch (n) {
10055                                 case 0:
10056                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10057                                         break;
10058                                 case 1:
10059                                         iargs [1] = sp [0];
10060                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10061                                         break;
10062                                 case 2:
10063                                         iargs [1] = sp [0];
10064                                         iargs [2] = sp [1];
10065                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10066                                         break;
10067                                 default:
10068                                         g_assert_not_reached ();
10069                                 }
10070
10071                                 ip += 5;
10072                                 inline_costs += 5;
10073                                 break;
10074                         }
10075
10076                         /* move the args to allow room for 'this' in the first position */
10077                         while (n--) {
10078                                 --sp;
10079                                 sp [1] = sp [0];
10080                         }
10081
10082                         /* check_call_signature () requires sp[0] to be set */
10083                         this_ins.type = STACK_OBJ;
10084                         sp [0] = &this_ins;
10085                         if (check_call_signature (cfg, fsig, sp))
10086                                 UNVERIFIED;
10087
10088                         iargs [0] = NULL;
10089
10090                         if (mini_class_is_system_array (cmethod->klass)) {
10091                                 *sp = emit_get_rgctx_method (cfg, context_used,
10092                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10093
10094                                 /* Avoid varargs in the common case */
10095                                 if (fsig->param_count == 1)
10096                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10097                                 else if (fsig->param_count == 2)
10098                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10099                                 else if (fsig->param_count == 3)
10100                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10101                                 else if (fsig->param_count == 4)
10102                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10103                                 else
10104                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10105                         } else if (cmethod->string_ctor) {
10106                                 g_assert (!context_used);
10107                                 g_assert (!vtable_arg);
10108                                 /* we simply pass a null pointer */
10109                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10110                                 /* now call the string ctor */
10111                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10112                         } else {
10113                                 if (cmethod->klass->valuetype) {
10114                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10115                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10116                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10117
10118                                         alloc = NULL;
10119
10120                                         /*
10121                                          * The code generated by mini_emit_virtual_call () expects
10122                                          * iargs [0] to be a boxed instance, but luckily the vcall
10123                                          * will be transformed into a normal call there.
10124                                          */
10125                                 } else if (context_used) {
10126                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10127                                         *sp = alloc;
10128                                 } else {
10129                                         MonoVTable *vtable = NULL;
10130
10131                                         if (!cfg->compile_aot)
10132                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10133                                         CHECK_TYPELOAD (cmethod->klass);
10134
10135                                         /*
10136                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10137                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10138                                          * As a workaround, we call class cctors before allocating objects.
10139                                          */
10140                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10141                                                 emit_class_init (cfg, cmethod->klass);
10142                                                 if (cfg->verbose_level > 2)
10143                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10144                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10145                                         }
10146
10147                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10148                                         *sp = alloc;
10149                                 }
10150                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10151
10152                                 if (alloc)
10153                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10154
10155                                 /* Now call the actual ctor */
10156                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10157                                 CHECK_CFG_EXCEPTION;
10158                         }
10159
10160                         if (alloc == NULL) {
10161                                 /* Valuetype */
10162                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10163                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10164                                 *sp++= ins;
10165                         } else {
10166                                 *sp++ = alloc;
10167                         }
10168
10169                         ip += 5;
10170                         inline_costs += 5;
10171                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10172                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10173                         break;
10174                 }
10175                 case CEE_CASTCLASS:
10176                 case CEE_ISINST: {
10177                         CHECK_STACK (1);
10178                         --sp;
10179                         CHECK_OPSIZE (5);
10180                         token = read32 (ip + 1);
10181                         klass = mini_get_class (method, token, generic_context);
10182                         CHECK_TYPELOAD (klass);
10183                         if (sp [0]->type != STACK_OBJ)
10184                                 UNVERIFIED;
10185
10186                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10187                         ins->dreg = alloc_preg (cfg);
10188                         ins->sreg1 = (*sp)->dreg;
10189                         ins->klass = klass;
10190                         ins->type = STACK_OBJ;
10191                         MONO_ADD_INS (cfg->cbb, ins);
10192
10193                         CHECK_CFG_EXCEPTION;
10194                         *sp++ = ins;
10195                         ip += 5;
10196
10197                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10198                         break;
10199                 }
10200                 case CEE_UNBOX_ANY: {
10201                         MonoInst *res, *addr;
10202
10203                         CHECK_STACK (1);
10204                         --sp;
10205                         CHECK_OPSIZE (5);
10206                         token = read32 (ip + 1);
10207                         klass = mini_get_class (method, token, generic_context);
10208                         CHECK_TYPELOAD (klass);
10209
10210                         mono_save_token_info (cfg, image, token, klass);
10211
10212                         context_used = mini_class_check_context_used (cfg, klass);
10213
10214                         if (mini_is_gsharedvt_klass (klass)) {
10215                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10216                                 inline_costs += 2;
10217                         } else if (generic_class_is_reference_type (cfg, klass)) {
10218                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10219                                         EMIT_NEW_PCONST (cfg, res, NULL);
10220                                         res->type = STACK_OBJ;
10221                                 } else {
10222                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10223                                         res->dreg = alloc_preg (cfg);
10224                                         res->sreg1 = (*sp)->dreg;
10225                                         res->klass = klass;
10226                                         res->type = STACK_OBJ;
10227                                         MONO_ADD_INS (cfg->cbb, res);
10228                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10229                                 }
10230                         } else if (mono_class_is_nullable (klass)) {
10231                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10232                         } else {
10233                                 addr = handle_unbox (cfg, klass, sp, context_used);
10234                                 /* LDOBJ */
10235                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10236                                 res = ins;
10237                                 inline_costs += 2;
10238                         }
10239
10240                         *sp ++ = res;
10241                         ip += 5;
10242                         break;
10243                 }
10244                 case CEE_BOX: {
10245                         MonoInst *val;
10246                         MonoClass *enum_class;
10247                         MonoMethod *has_flag;
10248
10249                         CHECK_STACK (1);
10250                         --sp;
10251                         val = *sp;
10252                         CHECK_OPSIZE (5);
10253                         token = read32 (ip + 1);
10254                         klass = mini_get_class (method, token, generic_context);
10255                         CHECK_TYPELOAD (klass);
10256
10257                         mono_save_token_info (cfg, image, token, klass);
10258
10259                         context_used = mini_class_check_context_used (cfg, klass);
10260
10261                         if (generic_class_is_reference_type (cfg, klass)) {
10262                                 *sp++ = val;
10263                                 ip += 5;
10264                                 break;
10265                         }
10266
10267                         if (klass == mono_defaults.void_class)
10268                                 UNVERIFIED;
10269                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10270                                 UNVERIFIED;
10271                         /* frequent check in generic code: box (struct), brtrue */
10272
10273                         /*
10274                          * Look for:
10275                          *
10276                          *   <push int/long ptr>
10277                          *   <push int/long>
10278                          *   box MyFlags
10279                          *   constrained. MyFlags
10280                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10281                          *
10282                          * If we find this sequence and the operand types on box and constrained
10283                          * are equal, we can emit a specialized instruction sequence instead of
10284                          * the very slow HasFlag () call.
10285                          */
10286                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10287                             /* Cheap checks first. */
10288                             ip + 5 + 6 + 5 < end &&
10289                             ip [5] == CEE_PREFIX1 &&
10290                             ip [6] == CEE_CONSTRAINED_ &&
10291                             ip [11] == CEE_CALLVIRT &&
10292                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10293                             mono_class_is_enum (klass) &&
10294                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10295                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10296                             has_flag->klass == mono_defaults.enum_class &&
10297                             !strcmp (has_flag->name, "HasFlag") &&
10298                             has_flag->signature->hasthis &&
10299                             has_flag->signature->param_count == 1) {
10300                                 CHECK_TYPELOAD (enum_class);
10301
10302                                 if (enum_class == klass) {
10303                                         MonoInst *enum_this, *enum_flag;
10304
10305                                         ip += 5 + 6 + 5;
10306                                         --sp;
10307
10308                                         enum_this = sp [0];
10309                                         enum_flag = sp [1];
10310
10311                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10312                                         break;
10313                                 }
10314                         }
10315
10316                         // FIXME: LLVM can't handle the inconsistent bb linking
10317                         if (!mono_class_is_nullable (klass) &&
10318                                 !mini_is_gsharedvt_klass (klass) &&
10319                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10320                                 (ip [5] == CEE_BRTRUE ||
10321                                  ip [5] == CEE_BRTRUE_S ||
10322                                  ip [5] == CEE_BRFALSE ||
10323                                  ip [5] == CEE_BRFALSE_S)) {
10324                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10325                                 int dreg;
10326                                 MonoBasicBlock *true_bb, *false_bb;
10327
10328                                 ip += 5;
10329
10330                                 if (cfg->verbose_level > 3) {
10331                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10332                                         printf ("<box+brtrue opt>\n");
10333                                 }
10334
10335                                 switch (*ip) {
10336                                 case CEE_BRTRUE_S:
10337                                 case CEE_BRFALSE_S:
10338                                         CHECK_OPSIZE (2);
10339                                         ip++;
10340                                         target = ip + 1 + (signed char)(*ip);
10341                                         ip++;
10342                                         break;
10343                                 case CEE_BRTRUE:
10344                                 case CEE_BRFALSE:
10345                                         CHECK_OPSIZE (5);
10346                                         ip++;
10347                                         target = ip + 4 + (gint)(read32 (ip));
10348                                         ip += 4;
10349                                         break;
10350                                 default:
10351                                         g_assert_not_reached ();
10352                                 }
10353
10354                                 /*
10355                                  * We need to link both bblocks, since it is needed for handling stack
10356                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10357                                  * Branching to only one of them would lead to inconsistencies, so
10358                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10359                                  */
10360                                 GET_BBLOCK (cfg, true_bb, target);
10361                                 GET_BBLOCK (cfg, false_bb, ip);
10362
10363                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10364                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10365
10366                                 if (sp != stack_start) {
10367                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10368                                         sp = stack_start;
10369                                         CHECK_UNVERIFIABLE (cfg);
10370                                 }
10371
10372                                 if (COMPILE_LLVM (cfg)) {
10373                                         dreg = alloc_ireg (cfg);
10374                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10375                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10376
10377                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10378                                 } else {
10379                                         /* The JIT can't eliminate the iconst+compare */
10380                                         MONO_INST_NEW (cfg, ins, OP_BR);
10381                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10382                                         MONO_ADD_INS (cfg->cbb, ins);
10383                                 }
10384
10385                                 start_new_bblock = 1;
10386                                 break;
10387                         }
10388
10389                         *sp++ = handle_box (cfg, val, klass, context_used);
10390
10391                         CHECK_CFG_EXCEPTION;
10392                         ip += 5;
10393                         inline_costs += 1;
10394                         break;
10395                 }
10396                 case CEE_UNBOX: {
10397                         CHECK_STACK (1);
10398                         --sp;
10399                         CHECK_OPSIZE (5);
10400                         token = read32 (ip + 1);
10401                         klass = mini_get_class (method, token, generic_context);
10402                         CHECK_TYPELOAD (klass);
10403
10404                         mono_save_token_info (cfg, image, token, klass);
10405
10406                         context_used = mini_class_check_context_used (cfg, klass);
10407
10408                         if (mono_class_is_nullable (klass)) {
10409                                 MonoInst *val;
10410
10411                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10412                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10413
10414                                 *sp++= ins;
10415                         } else {
10416                                 ins = handle_unbox (cfg, klass, sp, context_used);
10417                                 *sp++ = ins;
10418                         }
10419                         ip += 5;
10420                         inline_costs += 2;
10421                         break;
10422                 }
10423                 case CEE_LDFLD:
10424                 case CEE_LDFLDA:
10425                 case CEE_STFLD:
10426                 case CEE_LDSFLD:
10427                 case CEE_LDSFLDA:
10428                 case CEE_STSFLD: {
10429                         MonoClassField *field;
10430 #ifndef DISABLE_REMOTING
10431                         int costs;
10432 #endif
10433                         guint foffset;
10434                         gboolean is_instance;
10435                         int op;
10436                         gpointer addr = NULL;
10437                         gboolean is_special_static;
10438                         MonoType *ftype;
10439                         MonoInst *store_val = NULL;
10440                         MonoInst *thread_ins;
10441
10442                         op = *ip;
10443                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10444                         if (is_instance) {
10445                                 if (op == CEE_STFLD) {
10446                                         CHECK_STACK (2);
10447                                         sp -= 2;
10448                                         store_val = sp [1];
10449                                 } else {
10450                                         CHECK_STACK (1);
10451                                         --sp;
10452                                 }
10453                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10454                                         UNVERIFIED;
10455                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10456                                         UNVERIFIED;
10457                         } else {
10458                                 if (op == CEE_STSFLD) {
10459                                         CHECK_STACK (1);
10460                                         sp--;
10461                                         store_val = sp [0];
10462                                 }
10463                         }
10464
10465                         CHECK_OPSIZE (5);
10466                         token = read32 (ip + 1);
10467                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10468                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10469                                 klass = field->parent;
10470                         }
10471                         else {
10472                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10473                                 CHECK_CFG_ERROR;
10474                         }
10475                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10476                                 FIELD_ACCESS_FAILURE (method, field);
10477                         mono_class_init (klass);
10478
10479                         /* if the class is Critical then transparent code cannot access it's fields */
10480                         if (!is_instance && mono_security_core_clr_enabled ())
10481                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10482
10483                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10484                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10485                         if (mono_security_core_clr_enabled ())
10486                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10487                         */
10488
10489                         ftype = mono_field_get_type (field);
10490
10491                         /*
10492                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10493                          * the static case.
10494                          */
10495                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10496                                 switch (op) {
10497                                 case CEE_LDFLD:
10498                                         op = CEE_LDSFLD;
10499                                         break;
10500                                 case CEE_STFLD:
10501                                         op = CEE_STSFLD;
10502                                         break;
10503                                 case CEE_LDFLDA:
10504                                         op = CEE_LDSFLDA;
10505                                         break;
10506                                 default:
10507                                         g_assert_not_reached ();
10508                                 }
10509                                 is_instance = FALSE;
10510                         }
10511
10512                         context_used = mini_class_check_context_used (cfg, klass);
10513
10514                         /* INSTANCE CASE */
10515
10516                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10517                         if (op == CEE_STFLD) {
10518                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10519                                         UNVERIFIED;
10520 #ifndef DISABLE_REMOTING
10521                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10522                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10523                                         MonoInst *iargs [5];
10524
10525                                         GSHAREDVT_FAILURE (op);
10526
10527                                         iargs [0] = sp [0];
10528                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10529                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10530                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10531                                                     field->offset);
10532                                         iargs [4] = sp [1];
10533
10534                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10535                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10536                                                                                            iargs, ip, cfg->real_offset, TRUE);
10537                                                 CHECK_CFG_EXCEPTION;
10538                                                 g_assert (costs > 0);
10539
10540                                                 cfg->real_offset += 5;
10541
10542                                                 inline_costs += costs;
10543                                         } else {
10544                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10545                                         }
10546                                 } else
10547 #endif
10548                                 {
10549                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10550
10551                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10552
10553                                         if (ins_flag & MONO_INST_VOLATILE) {
10554                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10555                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10556                                         }
10557
10558                                         if (mini_is_gsharedvt_klass (klass)) {
10559                                                 MonoInst *offset_ins;
10560
10561                                                 context_used = mini_class_check_context_used (cfg, klass);
10562
10563                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10564                                                 /* The value is offset by 1 */
10565                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10566                                                 dreg = alloc_ireg_mp (cfg);
10567                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10568                                                 wbarrier_ptr_ins = ins;
10569                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10570                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10571                                         } else {
10572                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10573                                         }
10574                                         if (sp [0]->opcode != OP_LDADDR)
10575                                                 store->flags |= MONO_INST_FAULT;
10576
10577                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10578                                                 if (mini_is_gsharedvt_klass (klass)) {
10579                                                         g_assert (wbarrier_ptr_ins);
10580                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10581                                                 } else {
10582                                                         /* insert call to write barrier */
10583                                                         MonoInst *ptr;
10584                                                         int dreg;
10585
10586                                                         dreg = alloc_ireg_mp (cfg);
10587                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10588                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10589                                                 }
10590                                         }
10591
10592                                         store->flags |= ins_flag;
10593                                 }
10594                                 ins_flag = 0;
10595                                 ip += 5;
10596                                 break;
10597                         }
10598
10599 #ifndef DISABLE_REMOTING
10600                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10601                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10602                                 MonoInst *iargs [4];
10603
10604                                 GSHAREDVT_FAILURE (op);
10605
10606                                 iargs [0] = sp [0];
10607                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10608                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10609                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10610                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10611                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10612                                                                                    iargs, ip, cfg->real_offset, TRUE);
10613                                         CHECK_CFG_EXCEPTION;
10614                                         g_assert (costs > 0);
10615
10616                                         cfg->real_offset += 5;
10617
10618                                         *sp++ = iargs [0];
10619
10620                                         inline_costs += costs;
10621                                 } else {
10622                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10623                                         *sp++ = ins;
10624                                 }
10625                         } else
10626 #endif
10627                         if (is_instance) {
10628                                 if (sp [0]->type == STACK_VTYPE) {
10629                                         MonoInst *var;
10630
10631                                         /* Have to compute the address of the variable */
10632
10633                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10634                                         if (!var)
10635                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10636                                         else
10637                                                 g_assert (var->klass == klass);
10638
10639                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10640                                         sp [0] = ins;
10641                                 }
10642
10643                                 if (op == CEE_LDFLDA) {
10644                                         if (sp [0]->type == STACK_OBJ) {
10645                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10646                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10647                                         }
10648
10649                                         dreg = alloc_ireg_mp (cfg);
10650
10651                                         if (mini_is_gsharedvt_klass (klass)) {
10652                                                 MonoInst *offset_ins;
10653
10654                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10655                                                 /* The value is offset by 1 */
10656                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10657                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10658                                         } else {
10659                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10660                                         }
10661                                         ins->klass = mono_class_from_mono_type (field->type);
10662                                         ins->type = STACK_MP;
10663                                         *sp++ = ins;
10664                                 } else {
10665                                         MonoInst *load;
10666
10667                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10668
10669                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10670                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10671                                                 if (ins) {
10672                                                         *sp++ = ins;
10673                                                         ins_flag = 0;
10674                                                         ip += 5;
10675                                                         break;
10676                                                 }
10677                                         }
10678
10679                                         MonoInst *field_add_inst = sp [0];
10680                                         if (mini_is_gsharedvt_klass (klass)) {
10681                                                 MonoInst *offset_ins;
10682
10683                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10684                                                 /* The value is offset by 1 */
10685                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10686                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10687                                                 foffset = 0;
10688                                         }
10689
10690                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10691
10692                                         if (sp [0]->opcode != OP_LDADDR)
10693                                                 load->flags |= MONO_INST_FAULT;
10694                                         *sp++ = load;
10695                                 }
10696                         }
10697
10698                         if (is_instance) {
10699                                 ins_flag = 0;
10700                                 ip += 5;
10701                                 break;
10702                         }
10703
10704                         /* STATIC CASE */
10705                         context_used = mini_class_check_context_used (cfg, klass);
10706
10707                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10708                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10709                                 CHECK_CFG_ERROR;
10710                         }
10711
10712                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10713                          * to be called here.
10714                          */
10715                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10716                                 mono_class_vtable (cfg->domain, klass);
10717                                 CHECK_TYPELOAD (klass);
10718                         }
10719                         mono_domain_lock (cfg->domain);
10720                         if (cfg->domain->special_static_fields)
10721                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10722                         mono_domain_unlock (cfg->domain);
10723
10724                         is_special_static = mono_class_field_is_special_static (field);
10725
10726                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10727                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10728                         else
10729                                 thread_ins = NULL;
10730
10731                         /* Generate IR to compute the field address */
10732                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10733                                 /*
10734                                  * Fast access to TLS data
10735                                  * Inline version of get_thread_static_data () in
10736                                  * threads.c.
10737                                  */
10738                                 guint32 offset;
10739                                 int idx, static_data_reg, array_reg, dreg;
10740
10741                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10742                                         GSHAREDVT_FAILURE (op);
10743
10744                                 static_data_reg = alloc_ireg (cfg);
10745                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10746
10747                                 if (cfg->compile_aot) {
10748                                         int offset_reg, offset2_reg, idx_reg;
10749
10750                                         /* For TLS variables, this will return the TLS offset */
10751                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10752                                         offset_reg = ins->dreg;
10753                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10754                                         idx_reg = alloc_ireg (cfg);
10755                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10756                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10757                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10758                                         array_reg = alloc_ireg (cfg);
10759                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10760                                         offset2_reg = alloc_ireg (cfg);
10761                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10762                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10763                                         dreg = alloc_ireg (cfg);
10764                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10765                                 } else {
10766                                         offset = (gsize)addr & 0x7fffffff;
10767                                         idx = offset & 0x3f;
10768
10769                                         array_reg = alloc_ireg (cfg);
10770                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10771                                         dreg = alloc_ireg (cfg);
10772                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10773                                 }
10774                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10775                                         (cfg->compile_aot && is_special_static) ||
10776                                         (context_used && is_special_static)) {
10777                                 MonoInst *iargs [2];
10778
10779                                 g_assert (field->parent);
10780                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10781                                 if (context_used) {
10782                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10783                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10784                                 } else {
10785                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10786                                 }
10787                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10788                         } else if (context_used) {
10789                                 MonoInst *static_data;
10790
10791                                 /*
10792                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10793                                         method->klass->name_space, method->klass->name, method->name,
10794                                         depth, field->offset);
10795                                 */
10796
10797                                 if (mono_class_needs_cctor_run (klass, method))
10798                                         emit_class_init (cfg, klass);
10799
10800                                 /*
10801                                  * The pointer we're computing here is
10802                                  *
10803                                  *   super_info.static_data + field->offset
10804                                  */
10805                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10806                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10807
10808                                 if (mini_is_gsharedvt_klass (klass)) {
10809                                         MonoInst *offset_ins;
10810
10811                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10812                                         /* The value is offset by 1 */
10813                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10814                                         dreg = alloc_ireg_mp (cfg);
10815                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10816                                 } else if (field->offset == 0) {
10817                                         ins = static_data;
10818                                 } else {
10819                                         int addr_reg = mono_alloc_preg (cfg);
10820                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10821                                 }
10822                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10823                                 MonoInst *iargs [2];
10824
10825                                 g_assert (field->parent);
10826                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10827                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10828                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10829                         } else {
10830                                 MonoVTable *vtable = NULL;
10831
10832                                 if (!cfg->compile_aot)
10833                                         vtable = mono_class_vtable (cfg->domain, klass);
10834                                 CHECK_TYPELOAD (klass);
10835
10836                                 if (!addr) {
10837                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10838                                                 if (!(g_slist_find (class_inits, klass))) {
10839                                                         emit_class_init (cfg, klass);
10840                                                         if (cfg->verbose_level > 2)
10841                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10842                                                         class_inits = g_slist_prepend (class_inits, klass);
10843                                                 }
10844                                         } else {
10845                                                 if (cfg->run_cctors) {
10846                                                         /* This makes so that inline cannot trigger */
10847                                                         /* .cctors: too many apps depend on them */
10848                                                         /* running with a specific order... */
10849                                                         g_assert (vtable);
10850                                                         if (! vtable->initialized)
10851                                                                 INLINE_FAILURE ("class init");
10852                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10853                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10854                                                                 goto exception_exit;
10855                                                         }
10856                                                 }
10857                                         }
10858                                         if (cfg->compile_aot)
10859                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10860                                         else {
10861                                                 g_assert (vtable);
10862                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10863                                                 g_assert (addr);
10864                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10865                                         }
10866                                 } else {
10867                                         MonoInst *iargs [1];
10868                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10869                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10870                                 }
10871                         }
10872
10873                         /* Generate IR to do the actual load/store operation */
10874
10875                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10876                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10877                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10878                         }
10879
10880                         if (op == CEE_LDSFLDA) {
10881                                 ins->klass = mono_class_from_mono_type (ftype);
10882                                 ins->type = STACK_PTR;
10883                                 *sp++ = ins;
10884                         } else if (op == CEE_STSFLD) {
10885                                 MonoInst *store;
10886
10887                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10888                                 store->flags |= ins_flag;
10889                         } else {
10890                                 gboolean is_const = FALSE;
10891                                 MonoVTable *vtable = NULL;
10892                                 gpointer addr = NULL;
10893
10894                                 if (!context_used) {
10895                                         vtable = mono_class_vtable (cfg->domain, klass);
10896                                         CHECK_TYPELOAD (klass);
10897                                 }
10898                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10899                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10900                                         int ro_type = ftype->type;
10901                                         if (!addr)
10902                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10903                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10904                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10905                                         }
10906
10907                                         GSHAREDVT_FAILURE (op);
10908
10909                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10910                                         is_const = TRUE;
10911                                         switch (ro_type) {
10912                                         case MONO_TYPE_BOOLEAN:
10913                                         case MONO_TYPE_U1:
10914                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10915                                                 sp++;
10916                                                 break;
10917                                         case MONO_TYPE_I1:
10918                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10919                                                 sp++;
10920                                                 break;
10921                                         case MONO_TYPE_CHAR:
10922                                         case MONO_TYPE_U2:
10923                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10924                                                 sp++;
10925                                                 break;
10926                                         case MONO_TYPE_I2:
10927                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10928                                                 sp++;
10929                                                 break;
10930                                                 break;
10931                                         case MONO_TYPE_I4:
10932                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10933                                                 sp++;
10934                                                 break;
10935                                         case MONO_TYPE_U4:
10936                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10937                                                 sp++;
10938                                                 break;
10939                                         case MONO_TYPE_I:
10940                                         case MONO_TYPE_U:
10941                                         case MONO_TYPE_PTR:
10942                                         case MONO_TYPE_FNPTR:
10943                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10944                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10945                                                 sp++;
10946                                                 break;
10947                                         case MONO_TYPE_STRING:
10948                                         case MONO_TYPE_OBJECT:
10949                                         case MONO_TYPE_CLASS:
10950                                         case MONO_TYPE_SZARRAY:
10951                                         case MONO_TYPE_ARRAY:
10952                                                 if (!mono_gc_is_moving ()) {
10953                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10954                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10955                                                         sp++;
10956                                                 } else {
10957                                                         is_const = FALSE;
10958                                                 }
10959                                                 break;
10960                                         case MONO_TYPE_I8:
10961                                         case MONO_TYPE_U8:
10962                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10963                                                 sp++;
10964                                                 break;
10965                                         case MONO_TYPE_R4:
10966                                         case MONO_TYPE_R8:
10967                                         case MONO_TYPE_VALUETYPE:
10968                                         default:
10969                                                 is_const = FALSE;
10970                                                 break;
10971                                         }
10972                                 }
10973
10974                                 if (!is_const) {
10975                                         MonoInst *load;
10976
10977                                         CHECK_STACK_OVF (1);
10978
10979                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10980                                         load->flags |= ins_flag;
10981                                         ins_flag = 0;
10982                                         *sp++ = load;
10983                                 }
10984                         }
10985
10986                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10987                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10988                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10989                         }
10990
10991                         ins_flag = 0;
10992                         ip += 5;
10993                         break;
10994                 }
10995                 case CEE_STOBJ:
10996                         CHECK_STACK (2);
10997                         sp -= 2;
10998                         CHECK_OPSIZE (5);
10999                         token = read32 (ip + 1);
11000                         klass = mini_get_class (method, token, generic_context);
11001                         CHECK_TYPELOAD (klass);
11002
11003                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11004                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
11005                         ins_flag = 0;
11006                         ip += 5;
11007                         inline_costs += 1;
11008                         break;
11009
11010                         /*
11011                          * Array opcodes
11012                          */
11013                 case CEE_NEWARR: {
11014                         MonoInst *len_ins;
11015                         const char *data_ptr;
11016                         int data_size = 0;
11017                         guint32 field_token;
11018
11019                         CHECK_STACK (1);
11020                         --sp;
11021
11022                         CHECK_OPSIZE (5);
11023                         token = read32 (ip + 1);
11024
11025                         klass = mini_get_class (method, token, generic_context);
11026                         CHECK_TYPELOAD (klass);
11027                         if (klass->byval_arg.type == MONO_TYPE_VOID)
11028                                 UNVERIFIED;
11029
11030                         context_used = mini_class_check_context_used (cfg, klass);
11031
11032                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11033                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11034                                 ins->sreg1 = sp [0]->dreg;
11035                                 ins->type = STACK_I4;
11036                                 ins->dreg = alloc_ireg (cfg);
11037                                 MONO_ADD_INS (cfg->cbb, ins);
11038                                 *sp = mono_decompose_opcode (cfg, ins);
11039                         }
11040
11041                         if (context_used) {
11042                                 MonoInst *args [3];
11043                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11044                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11045
11046                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11047
11048                                 /* vtable */
11049                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
11050                                         array_class, MONO_RGCTX_INFO_VTABLE);
11051                                 /* array len */
11052                                 args [1] = sp [0];
11053
11054                                 if (managed_alloc)
11055                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11056                                 else
11057                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11058                         } else {
11059                                 if (cfg->opt & MONO_OPT_SHARED) {
11060                                         /* Decompose now to avoid problems with references to the domainvar */
11061                                         MonoInst *iargs [3];
11062
11063                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11064                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11065                                         iargs [2] = sp [0];
11066
11067                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11068                                 } else {
11069                                         /* Decompose later since it is needed by abcrem */
11070                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11071                                         mono_class_vtable (cfg->domain, array_type);
11072                                         CHECK_TYPELOAD (array_type);
11073
11074                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11075                                         ins->dreg = alloc_ireg_ref (cfg);
11076                                         ins->sreg1 = sp [0]->dreg;
11077                                         ins->inst_newa_class = klass;
11078                                         ins->type = STACK_OBJ;
11079                                         ins->klass = array_type;
11080                                         MONO_ADD_INS (cfg->cbb, ins);
11081                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11082                                         cfg->cbb->has_array_access = TRUE;
11083
11084                                         /* Needed so mono_emit_load_get_addr () gets called */
11085                                         mono_get_got_var (cfg);
11086                                 }
11087                         }
11088
11089                         len_ins = sp [0];
11090                         ip += 5;
11091                         *sp++ = ins;
11092                         inline_costs += 1;
11093
11094                         /*
11095                          * we inline/optimize the initialization sequence if possible.
11096                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11097                          * for small sizes open code the memcpy
11098                          * ensure the rva field is big enough
11099                          */
11100                         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))) {
11101                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
11102                                 MonoInst *iargs [3];
11103                                 int add_reg = alloc_ireg_mp (cfg);
11104
11105                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11106                                 if (cfg->compile_aot) {
11107                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11108                                 } else {
11109                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11110                                 }
11111                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11112                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11113                                 ip += 11;
11114                         }
11115
11116                         break;
11117                 }
11118                 case CEE_LDLEN:
11119                         CHECK_STACK (1);
11120                         --sp;
11121                         if (sp [0]->type != STACK_OBJ)
11122                                 UNVERIFIED;
11123
11124                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11125                         ins->dreg = alloc_preg (cfg);
11126                         ins->sreg1 = sp [0]->dreg;
11127                         ins->type = STACK_I4;
11128                         /* This flag will be inherited by the decomposition */
11129                         ins->flags |= MONO_INST_FAULT;
11130                         MONO_ADD_INS (cfg->cbb, ins);
11131                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11132                         cfg->cbb->has_array_access = TRUE;
11133                         ip ++;
11134                         *sp++ = ins;
11135                         break;
11136                 case CEE_LDELEMA:
11137                         CHECK_STACK (2);
11138                         sp -= 2;
11139                         CHECK_OPSIZE (5);
11140                         if (sp [0]->type != STACK_OBJ)
11141                                 UNVERIFIED;
11142
11143                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11144
11145                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11146                         CHECK_TYPELOAD (klass);
11147                         /* we need to make sure that this array is exactly the type it needs
11148                          * to be for correctness. the wrappers are lax with their usage
11149                          * so we need to ignore them here
11150                          */
11151                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11152                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11153                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11154                                 CHECK_TYPELOAD (array_class);
11155                         }
11156
11157                         readonly = FALSE;
11158                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11159                         *sp++ = ins;
11160                         ip += 5;
11161                         break;
11162                 case CEE_LDELEM:
11163                 case CEE_LDELEM_I1:
11164                 case CEE_LDELEM_U1:
11165                 case CEE_LDELEM_I2:
11166                 case CEE_LDELEM_U2:
11167                 case CEE_LDELEM_I4:
11168                 case CEE_LDELEM_U4:
11169                 case CEE_LDELEM_I8:
11170                 case CEE_LDELEM_I:
11171                 case CEE_LDELEM_R4:
11172                 case CEE_LDELEM_R8:
11173                 case CEE_LDELEM_REF: {
11174                         MonoInst *addr;
11175
11176                         CHECK_STACK (2);
11177                         sp -= 2;
11178
11179                         if (*ip == CEE_LDELEM) {
11180                                 CHECK_OPSIZE (5);
11181                                 token = read32 (ip + 1);
11182                                 klass = mini_get_class (method, token, generic_context);
11183                                 CHECK_TYPELOAD (klass);
11184                                 mono_class_init (klass);
11185                         }
11186                         else
11187                                 klass = array_access_to_klass (*ip);
11188
11189                         if (sp [0]->type != STACK_OBJ)
11190                                 UNVERIFIED;
11191
11192                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11193
11194                         if (mini_is_gsharedvt_variable_klass (klass)) {
11195                                 // FIXME-VT: OP_ICONST optimization
11196                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11197                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11198                                 ins->opcode = OP_LOADV_MEMBASE;
11199                         } else if (sp [1]->opcode == OP_ICONST) {
11200                                 int array_reg = sp [0]->dreg;
11201                                 int index_reg = sp [1]->dreg;
11202                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11203
11204                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11205                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11206
11207                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11208                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11209                         } else {
11210                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11211                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11212                         }
11213                         *sp++ = ins;
11214                         if (*ip == CEE_LDELEM)
11215                                 ip += 5;
11216                         else
11217                                 ++ip;
11218                         break;
11219                 }
11220                 case CEE_STELEM_I:
11221                 case CEE_STELEM_I1:
11222                 case CEE_STELEM_I2:
11223                 case CEE_STELEM_I4:
11224                 case CEE_STELEM_I8:
11225                 case CEE_STELEM_R4:
11226                 case CEE_STELEM_R8:
11227                 case CEE_STELEM_REF:
11228                 case CEE_STELEM: {
11229                         CHECK_STACK (3);
11230                         sp -= 3;
11231
11232                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11233
11234                         if (*ip == CEE_STELEM) {
11235                                 CHECK_OPSIZE (5);
11236                                 token = read32 (ip + 1);
11237                                 klass = mini_get_class (method, token, generic_context);
11238                                 CHECK_TYPELOAD (klass);
11239                                 mono_class_init (klass);
11240                         }
11241                         else
11242                                 klass = array_access_to_klass (*ip);
11243
11244                         if (sp [0]->type != STACK_OBJ)
11245                                 UNVERIFIED;
11246
11247                         emit_array_store (cfg, klass, sp, TRUE);
11248
11249                         if (*ip == CEE_STELEM)
11250                                 ip += 5;
11251                         else
11252                                 ++ip;
11253                         inline_costs += 1;
11254                         break;
11255                 }
11256                 case CEE_CKFINITE: {
11257                         CHECK_STACK (1);
11258                         --sp;
11259
11260                         if (cfg->llvm_only) {
11261                                 MonoInst *iargs [1];
11262
11263                                 iargs [0] = sp [0];
11264                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11265                         } else  {
11266                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11267                                 ins->sreg1 = sp [0]->dreg;
11268                                 ins->dreg = alloc_freg (cfg);
11269                                 ins->type = STACK_R8;
11270                                 MONO_ADD_INS (cfg->cbb, ins);
11271
11272                                 *sp++ = mono_decompose_opcode (cfg, ins);
11273                         }
11274
11275                         ++ip;
11276                         break;
11277                 }
11278                 case CEE_REFANYVAL: {
11279                         MonoInst *src_var, *src;
11280
11281                         int klass_reg = alloc_preg (cfg);
11282                         int dreg = alloc_preg (cfg);
11283
11284                         GSHAREDVT_FAILURE (*ip);
11285
11286                         CHECK_STACK (1);
11287                         MONO_INST_NEW (cfg, ins, *ip);
11288                         --sp;
11289                         CHECK_OPSIZE (5);
11290                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11291                         CHECK_TYPELOAD (klass);
11292
11293                         context_used = mini_class_check_context_used (cfg, klass);
11294
11295                         // FIXME:
11296                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11297                         if (!src_var)
11298                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11299                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11300                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11301
11302                         if (context_used) {
11303                                 MonoInst *klass_ins;
11304
11305                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11306                                                 klass, MONO_RGCTX_INFO_KLASS);
11307
11308                                 // FIXME:
11309                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11310                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11311                         } else {
11312                                 mini_emit_class_check (cfg, klass_reg, klass);
11313                         }
11314                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11315                         ins->type = STACK_MP;
11316                         ins->klass = klass;
11317                         *sp++ = ins;
11318                         ip += 5;
11319                         break;
11320                 }
11321                 case CEE_MKREFANY: {
11322                         MonoInst *loc, *addr;
11323
11324                         GSHAREDVT_FAILURE (*ip);
11325
11326                         CHECK_STACK (1);
11327                         MONO_INST_NEW (cfg, ins, *ip);
11328                         --sp;
11329                         CHECK_OPSIZE (5);
11330                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11331                         CHECK_TYPELOAD (klass);
11332
11333                         context_used = mini_class_check_context_used (cfg, klass);
11334
11335                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11336                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11337
11338                         if (context_used) {
11339                                 MonoInst *const_ins;
11340                                 int type_reg = alloc_preg (cfg);
11341
11342                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11343                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11344                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11345                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11346                         } else {
11347                                 int const_reg = alloc_preg (cfg);
11348                                 int type_reg = alloc_preg (cfg);
11349
11350                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11351                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11352                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11353                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11354                         }
11355                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11356
11357                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11358                         ins->type = STACK_VTYPE;
11359                         ins->klass = mono_defaults.typed_reference_class;
11360                         *sp++ = ins;
11361                         ip += 5;
11362                         break;
11363                 }
11364                 case CEE_LDTOKEN: {
11365                         gpointer handle;
11366                         MonoClass *handle_class;
11367
11368                         CHECK_STACK_OVF (1);
11369
11370                         CHECK_OPSIZE (5);
11371                         n = read32 (ip + 1);
11372
11373                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11374                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11375                                 handle = mono_method_get_wrapper_data (method, n);
11376                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11377                                 if (handle_class == mono_defaults.typehandle_class)
11378                                         handle = &((MonoClass*)handle)->byval_arg;
11379                         }
11380                         else {
11381                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11382                                 CHECK_CFG_ERROR;
11383                         }
11384                         if (!handle)
11385                                 LOAD_ERROR;
11386                         mono_class_init (handle_class);
11387                         if (cfg->gshared) {
11388                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11389                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11390                                         /* This case handles ldtoken
11391                                            of an open type, like for
11392                                            typeof(Gen<>). */
11393                                         context_used = 0;
11394                                 } else if (handle_class == mono_defaults.typehandle_class) {
11395                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11396                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11397                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11398                                 else if (handle_class == mono_defaults.methodhandle_class)
11399                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11400                                 else
11401                                         g_assert_not_reached ();
11402                         }
11403
11404                         if ((cfg->opt & MONO_OPT_SHARED) &&
11405                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11406                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11407                                 MonoInst *addr, *vtvar, *iargs [3];
11408                                 int method_context_used;
11409
11410                                 method_context_used = mini_method_check_context_used (cfg, method);
11411
11412                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11413
11414                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11415                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11416                                 if (method_context_used) {
11417                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11418                                                 method, MONO_RGCTX_INFO_METHOD);
11419                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11420                                 } else {
11421                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11422                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11423                                 }
11424                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11425
11426                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11427
11428                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11429                         } else {
11430                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11431                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11432                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11433                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11434                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11435                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11436
11437                                         mono_class_init (tclass);
11438                                         if (context_used) {
11439                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11440                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11441                                         } else if (cfg->compile_aot) {
11442                                                 if (method->wrapper_type) {
11443                                                         error_init (&error); //got to do it since there are multiple conditionals below
11444                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11445                                                                 /* Special case for static synchronized wrappers */
11446                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11447                                                         } else {
11448                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11449                                                                 /* FIXME: n is not a normal token */
11450                                                                 DISABLE_AOT (cfg);
11451                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11452                                                         }
11453                                                 } else {
11454                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11455                                                 }
11456                                         } else {
11457                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11458                                                 CHECK_CFG_ERROR;
11459                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11460                                         }
11461                                         ins->type = STACK_OBJ;
11462                                         ins->klass = cmethod->klass;
11463                                         ip += 5;
11464                                 } else {
11465                                         MonoInst *addr, *vtvar;
11466
11467                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11468
11469                                         if (context_used) {
11470                                                 if (handle_class == mono_defaults.typehandle_class) {
11471                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11472                                                                         mono_class_from_mono_type ((MonoType *)handle),
11473                                                                         MONO_RGCTX_INFO_TYPE);
11474                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11475                                                         ins = emit_get_rgctx_method (cfg, context_used,
11476                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11477                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11478                                                         ins = emit_get_rgctx_field (cfg, context_used,
11479                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11480                                                 } else {
11481                                                         g_assert_not_reached ();
11482                                                 }
11483                                         } else if (cfg->compile_aot) {
11484                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11485                                         } else {
11486                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11487                                         }
11488                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11489                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11490                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11491                                 }
11492                         }
11493
11494                         *sp++ = ins;
11495                         ip += 5;
11496                         break;
11497                 }
11498                 case CEE_THROW:
11499                         CHECK_STACK (1);
11500                         if (sp [-1]->type != STACK_OBJ)
11501                                 UNVERIFIED;
11502
11503                         MONO_INST_NEW (cfg, ins, OP_THROW);
11504                         --sp;
11505                         ins->sreg1 = sp [0]->dreg;
11506                         ip++;
11507                         cfg->cbb->out_of_line = TRUE;
11508                         MONO_ADD_INS (cfg->cbb, ins);
11509                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11510                         MONO_ADD_INS (cfg->cbb, ins);
11511                         sp = stack_start;
11512
11513                         link_bblock (cfg, cfg->cbb, end_bblock);
11514                         start_new_bblock = 1;
11515                         /* This can complicate code generation for llvm since the return value might not be defined */
11516                         if (COMPILE_LLVM (cfg))
11517                                 INLINE_FAILURE ("throw");
11518                         break;
11519                 case CEE_ENDFINALLY:
11520                         if (!ip_in_finally_clause (cfg, ip - header->code))
11521                                 UNVERIFIED;
11522                         /* mono_save_seq_point_info () depends on this */
11523                         if (sp != stack_start)
11524                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11525                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11526                         MONO_ADD_INS (cfg->cbb, ins);
11527                         ip++;
11528                         start_new_bblock = 1;
11529
11530                         /*
11531                          * Control will leave the method so empty the stack, otherwise
11532                          * the next basic block will start with a nonempty stack.
11533                          */
11534                         while (sp != stack_start) {
11535                                 sp--;
11536                         }
11537                         break;
11538                 case CEE_LEAVE:
11539                 case CEE_LEAVE_S: {
11540                         GList *handlers;
11541
11542                         if (*ip == CEE_LEAVE) {
11543                                 CHECK_OPSIZE (5);
11544                                 target = ip + 5 + (gint32)read32(ip + 1);
11545                         } else {
11546                                 CHECK_OPSIZE (2);
11547                                 target = ip + 2 + (signed char)(ip [1]);
11548                         }
11549
11550                         /* empty the stack */
11551                         while (sp != stack_start) {
11552                                 sp--;
11553                         }
11554
11555                         /*
11556                          * If this leave statement is in a catch block, check for a
11557                          * pending exception, and rethrow it if necessary.
11558                          * We avoid doing this in runtime invoke wrappers, since those are called
11559                          * by native code which excepts the wrapper to catch all exceptions.
11560                          */
11561                         for (i = 0; i < header->num_clauses; ++i) {
11562                                 MonoExceptionClause *clause = &header->clauses [i];
11563
11564                                 /*
11565                                  * Use <= in the final comparison to handle clauses with multiple
11566                                  * leave statements, like in bug #78024.
11567                                  * The ordering of the exception clauses guarantees that we find the
11568                                  * innermost clause.
11569                                  */
11570                                 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) {
11571                                         MonoInst *exc_ins;
11572                                         MonoBasicBlock *dont_throw;
11573
11574                                         /*
11575                                           MonoInst *load;
11576
11577                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11578                                         */
11579
11580                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11581
11582                                         NEW_BBLOCK (cfg, dont_throw);
11583
11584                                         /*
11585                                          * Currently, we always rethrow the abort exception, despite the
11586                                          * fact that this is not correct. See thread6.cs for an example.
11587                                          * But propagating the abort exception is more important than
11588                                          * getting the sematics right.
11589                                          */
11590                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11591                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11592                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11593
11594                                         MONO_START_BB (cfg, dont_throw);
11595                                 }
11596                         }
11597
11598 #ifdef ENABLE_LLVM
11599                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11600 #endif
11601
11602                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11603                                 GList *tmp;
11604                                 MonoExceptionClause *clause;
11605
11606                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11607                                         clause = (MonoExceptionClause *)tmp->data;
11608                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11609                                         g_assert (tblock);
11610                                         link_bblock (cfg, cfg->cbb, tblock);
11611                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11612                                         ins->inst_target_bb = tblock;
11613                                         ins->inst_eh_block = clause;
11614                                         MONO_ADD_INS (cfg->cbb, ins);
11615                                         cfg->cbb->has_call_handler = 1;
11616                                         if (COMPILE_LLVM (cfg)) {
11617                                                 MonoBasicBlock *target_bb;
11618
11619                                                 /*
11620                                                  * Link the finally bblock with the target, since it will
11621                                                  * conceptually branch there.
11622                                                  */
11623                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11624                                                 GET_BBLOCK (cfg, target_bb, target);
11625                                                 link_bblock (cfg, tblock, target_bb);
11626                                         }
11627                                 }
11628                                 g_list_free (handlers);
11629                         }
11630
11631                         MONO_INST_NEW (cfg, ins, OP_BR);
11632                         MONO_ADD_INS (cfg->cbb, ins);
11633                         GET_BBLOCK (cfg, tblock, target);
11634                         link_bblock (cfg, cfg->cbb, tblock);
11635                         ins->inst_target_bb = tblock;
11636
11637                         start_new_bblock = 1;
11638
11639                         if (*ip == CEE_LEAVE)
11640                                 ip += 5;
11641                         else
11642                                 ip += 2;
11643
11644                         break;
11645                 }
11646
11647                         /*
11648                          * Mono specific opcodes
11649                          */
11650                 case MONO_CUSTOM_PREFIX: {
11651
11652                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11653
11654                         CHECK_OPSIZE (2);
11655                         switch (ip [1]) {
11656                         case CEE_MONO_ICALL: {
11657                                 gpointer func;
11658                                 MonoJitICallInfo *info;
11659
11660                                 token = read32 (ip + 2);
11661                                 func = mono_method_get_wrapper_data (method, token);
11662                                 info = mono_find_jit_icall_by_addr (func);
11663                                 if (!info)
11664                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11665                                 g_assert (info);
11666
11667                                 CHECK_STACK (info->sig->param_count);
11668                                 sp -= info->sig->param_count;
11669
11670                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
11671                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11672                                         *sp++ = ins;
11673
11674                                 ip += 6;
11675                                 inline_costs += 10 * num_calls++;
11676
11677                                 break;
11678                         }
11679                         case CEE_MONO_LDPTR_CARD_TABLE:
11680                         case CEE_MONO_LDPTR_NURSERY_START:
11681                         case CEE_MONO_LDPTR_NURSERY_BITS:
11682                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11683                                 CHECK_STACK_OVF (1);
11684
11685                                 switch (ip [1]) {
11686                                         case CEE_MONO_LDPTR_CARD_TABLE:
11687                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11688                                                 break;
11689                                         case CEE_MONO_LDPTR_NURSERY_START:
11690                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11691                                                 break;
11692                                         case CEE_MONO_LDPTR_NURSERY_BITS:
11693                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11694                                                 break;
11695                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11696                                                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11697                                                 break;
11698                                 }
11699
11700                                 *sp++ = ins;
11701                                 ip += 2;
11702                                 inline_costs += 10 * num_calls++;
11703                                 break;
11704                         }
11705                         case CEE_MONO_LDPTR: {
11706                                 gpointer ptr;
11707
11708                                 CHECK_STACK_OVF (1);
11709                                 CHECK_OPSIZE (6);
11710                                 token = read32 (ip + 2);
11711
11712                                 ptr = mono_method_get_wrapper_data (method, token);
11713                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11714                                 *sp++ = ins;
11715                                 ip += 6;
11716                                 inline_costs += 10 * num_calls++;
11717                                 /* Can't embed random pointers into AOT code */
11718                                 DISABLE_AOT (cfg);
11719                                 break;
11720                         }
11721                         case CEE_MONO_JIT_ICALL_ADDR: {
11722                                 MonoJitICallInfo *callinfo;
11723                                 gpointer ptr;
11724
11725                                 CHECK_STACK_OVF (1);
11726                                 CHECK_OPSIZE (6);
11727                                 token = read32 (ip + 2);
11728
11729                                 ptr = mono_method_get_wrapper_data (method, token);
11730                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11731                                 g_assert (callinfo);
11732                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11733                                 *sp++ = ins;
11734                                 ip += 6;
11735                                 inline_costs += 10 * num_calls++;
11736                                 break;
11737                         }
11738                         case CEE_MONO_ICALL_ADDR: {
11739                                 MonoMethod *cmethod;
11740                                 gpointer ptr;
11741
11742                                 CHECK_STACK_OVF (1);
11743                                 CHECK_OPSIZE (6);
11744                                 token = read32 (ip + 2);
11745
11746                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11747
11748                                 if (cfg->compile_aot) {
11749                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11750                                                 /*
11751                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11752                                                  * before the call, its not needed when using direct pinvoke.
11753                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11754                                                  * on platforms which don't support dlopen ().
11755                                                  */
11756                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11757                                         } else {
11758                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11759                                         }
11760                                 } else {
11761                                         ptr = mono_lookup_internal_call (cmethod);
11762                                         g_assert (ptr);
11763                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11764                                 }
11765                                 *sp++ = ins;
11766                                 ip += 6;
11767                                 break;
11768                         }
11769                         case CEE_MONO_VTADDR: {
11770                                 MonoInst *src_var, *src;
11771
11772                                 CHECK_STACK (1);
11773                                 --sp;
11774
11775                                 // FIXME:
11776                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11777                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11778                                 *sp++ = src;
11779                                 ip += 2;
11780                                 break;
11781                         }
11782                         case CEE_MONO_NEWOBJ: {
11783                                 MonoInst *iargs [2];
11784
11785                                 CHECK_STACK_OVF (1);
11786                                 CHECK_OPSIZE (6);
11787                                 token = read32 (ip + 2);
11788                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11789                                 mono_class_init (klass);
11790                                 NEW_DOMAINCONST (cfg, iargs [0]);
11791                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11792                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11793                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11794                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11795                                 ip += 6;
11796                                 inline_costs += 10 * num_calls++;
11797                                 break;
11798                         }
11799                         case CEE_MONO_OBJADDR:
11800                                 CHECK_STACK (1);
11801                                 --sp;
11802                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11803                                 ins->dreg = alloc_ireg_mp (cfg);
11804                                 ins->sreg1 = sp [0]->dreg;
11805                                 ins->type = STACK_MP;
11806                                 MONO_ADD_INS (cfg->cbb, ins);
11807                                 *sp++ = ins;
11808                                 ip += 2;
11809                                 break;
11810                         case CEE_MONO_LDNATIVEOBJ:
11811                                 /*
11812                                  * Similar to LDOBJ, but instead load the unmanaged
11813                                  * representation of the vtype to the stack.
11814                                  */
11815                                 CHECK_STACK (1);
11816                                 CHECK_OPSIZE (6);
11817                                 --sp;
11818                                 token = read32 (ip + 2);
11819                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11820                                 g_assert (klass->valuetype);
11821                                 mono_class_init (klass);
11822
11823                                 {
11824                                         MonoInst *src, *dest, *temp;
11825
11826                                         src = sp [0];
11827                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11828                                         temp->backend.is_pinvoke = 1;
11829                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11830                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11831
11832                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11833                                         dest->type = STACK_VTYPE;
11834                                         dest->klass = klass;
11835
11836                                         *sp ++ = dest;
11837                                         ip += 6;
11838                                 }
11839                                 break;
11840                         case CEE_MONO_RETOBJ: {
11841                                 /*
11842                                  * Same as RET, but return the native representation of a vtype
11843                                  * to the caller.
11844                                  */
11845                                 g_assert (cfg->ret);
11846                                 g_assert (mono_method_signature (method)->pinvoke);
11847                                 CHECK_STACK (1);
11848                                 --sp;
11849
11850                                 CHECK_OPSIZE (6);
11851                                 token = read32 (ip + 2);
11852                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11853
11854                                 if (!cfg->vret_addr) {
11855                                         g_assert (cfg->ret_var_is_local);
11856
11857                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11858                                 } else {
11859                                         EMIT_NEW_RETLOADA (cfg, ins);
11860                                 }
11861                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11862
11863                                 if (sp != stack_start)
11864                                         UNVERIFIED;
11865
11866                                 MONO_INST_NEW (cfg, ins, OP_BR);
11867                                 ins->inst_target_bb = end_bblock;
11868                                 MONO_ADD_INS (cfg->cbb, ins);
11869                                 link_bblock (cfg, cfg->cbb, end_bblock);
11870                                 start_new_bblock = 1;
11871                                 ip += 6;
11872                                 break;
11873                         }
11874                         case CEE_MONO_SAVE_LMF:
11875                         case CEE_MONO_RESTORE_LMF:
11876                                 ip += 2;
11877                                 break;
11878                         case CEE_MONO_CLASSCONST:
11879                                 CHECK_STACK_OVF (1);
11880                                 CHECK_OPSIZE (6);
11881                                 token = read32 (ip + 2);
11882                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11883                                 *sp++ = ins;
11884                                 ip += 6;
11885                                 inline_costs += 10 * num_calls++;
11886                                 break;
11887                         case CEE_MONO_NOT_TAKEN:
11888                                 cfg->cbb->out_of_line = TRUE;
11889                                 ip += 2;
11890                                 break;
11891                         case CEE_MONO_TLS: {
11892                                 MonoTlsKey key;
11893
11894                                 CHECK_STACK_OVF (1);
11895                                 CHECK_OPSIZE (6);
11896                                 key = (MonoTlsKey)read32 (ip + 2);
11897                                 g_assert (key < TLS_KEY_NUM);
11898
11899                                 ins = mono_create_tls_get (cfg, key);
11900                                 g_assert (ins);
11901                                 ins->type = STACK_PTR;
11902                                 *sp++ = ins;
11903                                 ip += 6;
11904                                 break;
11905                         }
11906                         case CEE_MONO_DYN_CALL: {
11907                                 MonoCallInst *call;
11908
11909                                 /* It would be easier to call a trampoline, but that would put an
11910                                  * extra frame on the stack, confusing exception handling. So
11911                                  * implement it inline using an opcode for now.
11912                                  */
11913
11914                                 if (!cfg->dyn_call_var) {
11915                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11916                                         /* prevent it from being register allocated */
11917                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11918                                 }
11919
11920                                 /* Has to use a call inst since it local regalloc expects it */
11921                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11922                                 ins = (MonoInst*)call;
11923                                 sp -= 2;
11924                                 ins->sreg1 = sp [0]->dreg;
11925                                 ins->sreg2 = sp [1]->dreg;
11926                                 MONO_ADD_INS (cfg->cbb, ins);
11927
11928                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11929
11930                                 ip += 2;
11931                                 inline_costs += 10 * num_calls++;
11932
11933                                 break;
11934                         }
11935                         case CEE_MONO_MEMORY_BARRIER: {
11936                                 CHECK_OPSIZE (6);
11937                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11938                                 ip += 6;
11939                                 break;
11940                         }
11941                         case CEE_MONO_ATOMIC_STORE_I4: {
11942                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11943
11944                                 CHECK_OPSIZE (6);
11945                                 CHECK_STACK (2);
11946                                 sp -= 2;
11947
11948                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11949                                 ins->dreg = sp [0]->dreg;
11950                                 ins->sreg1 = sp [1]->dreg;
11951                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11952                                 MONO_ADD_INS (cfg->cbb, ins);
11953
11954                                 ip += 6;
11955                                 break;
11956                         }
11957                         case CEE_MONO_JIT_ATTACH: {
11958                                 MonoInst *args [16], *domain_ins;
11959                                 MonoInst *ad_ins, *jit_tls_ins;
11960                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11961
11962                                 g_assert (!mono_threads_is_coop_enabled ());
11963
11964                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11965
11966                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11967                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11968
11969                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11970                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11971
11972                                 if (ad_ins && jit_tls_ins) {
11973                                         NEW_BBLOCK (cfg, next_bb);
11974                                         NEW_BBLOCK (cfg, call_bb);
11975
11976                                         if (cfg->compile_aot) {
11977                                                 /* AOT code is only used in the root domain */
11978                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11979                                         } else {
11980                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11981                                         }
11982                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11983                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11984
11985                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11986                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11987
11988                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11989                                         MONO_START_BB (cfg, call_bb);
11990                                 }
11991
11992                                 /* AOT code is only used in the root domain */
11993                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11994                                 if (cfg->compile_aot) {
11995                                         MonoInst *addr;
11996
11997                                         /*
11998                                          * This is called on unattached threads, so it cannot go through the trampoline
11999                                          * infrastructure. Use an indirect call through a got slot initialized at load time
12000                                          * instead.
12001                                          */
12002                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
12003                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
12004                                 } else {
12005                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12006                                 }
12007                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12008
12009                                 if (next_bb)
12010                                         MONO_START_BB (cfg, next_bb);
12011
12012                                 ip += 2;
12013                                 break;
12014                         }
12015                         case CEE_MONO_JIT_DETACH: {
12016                                 MonoInst *args [16];
12017
12018                                 /* Restore the original domain */
12019                                 dreg = alloc_ireg (cfg);
12020                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12021                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12022                                 ip += 2;
12023                                 break;
12024                         }
12025                         case CEE_MONO_CALLI_EXTRA_ARG: {
12026                                 MonoInst *addr;
12027                                 MonoMethodSignature *fsig;
12028                                 MonoInst *arg;
12029
12030                                 /*
12031                                  * This is the same as CEE_CALLI, but passes an additional argument
12032                                  * to the called method in llvmonly mode.
12033                                  * This is only used by delegate invoke wrappers to call the
12034                                  * actual delegate method.
12035                                  */
12036                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12037
12038                                 CHECK_OPSIZE (6);
12039                                 token = read32 (ip + 2);
12040
12041                                 ins = NULL;
12042
12043                                 cmethod = NULL;
12044                                 CHECK_STACK (1);
12045                                 --sp;
12046                                 addr = *sp;
12047                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12048                                 CHECK_CFG_ERROR;
12049
12050                                 if (cfg->llvm_only)
12051                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12052
12053                                 n = fsig->param_count + fsig->hasthis + 1;
12054
12055                                 CHECK_STACK (n);
12056
12057                                 sp -= n;
12058                                 arg = sp [n - 1];
12059
12060                                 if (cfg->llvm_only) {
12061                                         /*
12062                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12063                                          * cconv. This is set by mono_init_delegate ().
12064                                          */
12065                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12066                                                 MonoInst *callee = addr;
12067                                                 MonoInst *call, *localloc_ins;
12068                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12069                                                 int low_bit_reg = alloc_preg (cfg);
12070
12071                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12072                                                 NEW_BBLOCK (cfg, end_bb);
12073
12074                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12075                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12076                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12077
12078                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12079                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12080                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12081                                                 /*
12082                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12083                                                  */
12084                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12085                                                 ins->dreg = alloc_preg (cfg);
12086                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12087                                                 MONO_ADD_INS (cfg->cbb, ins);
12088                                                 localloc_ins = ins;
12089                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12090                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12091                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12092
12093                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12094                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12095
12096                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12097                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12098                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12099                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12100                                                 ins->dreg = call->dreg;
12101
12102                                                 MONO_START_BB (cfg, end_bb);
12103                                         } else {
12104                                                 /* Caller uses a normal calling conv */
12105
12106                                                 MonoInst *callee = addr;
12107                                                 MonoInst *call, *localloc_ins;
12108                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12109                                                 int low_bit_reg = alloc_preg (cfg);
12110
12111                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12112                                                 NEW_BBLOCK (cfg, end_bb);
12113
12114                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12115                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12116                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12117
12118                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12119                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12120                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12121                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12122                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12123                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12124                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12125                                                 MONO_ADD_INS (cfg->cbb, addr);
12126                                                 /*
12127                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12128                                                  */
12129                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12130                                                 ins->dreg = alloc_preg (cfg);
12131                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12132                                                 MONO_ADD_INS (cfg->cbb, ins);
12133                                                 localloc_ins = ins;
12134                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12135                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12136                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12137
12138                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12139                                                 ins->dreg = call->dreg;
12140                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12141
12142                                                 MONO_START_BB (cfg, end_bb);
12143                                         }
12144                                 } else {
12145                                         /* Same as CEE_CALLI */
12146                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12147                                                 /*
12148                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12149                                                  */
12150                                                 MonoInst *callee = addr;
12151
12152                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12153                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12154                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12155                                         } else {
12156                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12157                                         }
12158                                 }
12159
12160                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12161                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12162
12163                                 CHECK_CFG_EXCEPTION;
12164
12165                                 ip += 6;
12166                                 ins_flag = 0;
12167                                 constrained_class = NULL;
12168                                 break;
12169                         }
12170                         case CEE_MONO_LDDOMAIN:
12171                                 CHECK_STACK_OVF (1);
12172                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12173                                 ip += 2;
12174                                 *sp++ = ins;
12175                                 break;
12176                         case CEE_MONO_GET_LAST_ERROR:
12177                                 CHECK_OPSIZE (2);
12178                                 CHECK_STACK_OVF (1);
12179
12180                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12181                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12182                                 ins->type = STACK_I4;
12183                                 MONO_ADD_INS (cfg->cbb, ins);
12184
12185                                 ip += 2;
12186                                 *sp++ = ins;
12187                                 break;
12188                         case CEE_MONO_GET_RGCTX_ARG:
12189                                 CHECK_OPSIZE (2);
12190                                 CHECK_STACK_OVF (1);
12191
12192                                 mono_create_rgctx_var (cfg);
12193
12194                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12195                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12196                                 ins->sreg1 = cfg->rgctx_var->dreg;
12197                                 ins->type = STACK_PTR;
12198                                 MONO_ADD_INS (cfg->cbb, ins);
12199
12200                                 ip += 2;
12201                                 *sp++ = ins;
12202                                 break;
12203                         default:
12204                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12205                                 break;
12206                         }
12207                         break;
12208                 }
12209
12210                 case CEE_PREFIX1: {
12211                         CHECK_OPSIZE (2);
12212                         switch (ip [1]) {
12213                         case CEE_ARGLIST: {
12214                                 /* somewhat similar to LDTOKEN */
12215                                 MonoInst *addr, *vtvar;
12216                                 CHECK_STACK_OVF (1);
12217                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12218
12219                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12220                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12221
12222                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12223                                 ins->type = STACK_VTYPE;
12224                                 ins->klass = mono_defaults.argumenthandle_class;
12225                                 *sp++ = ins;
12226                                 ip += 2;
12227                                 break;
12228                         }
12229                         case CEE_CEQ:
12230                         case CEE_CGT:
12231                         case CEE_CGT_UN:
12232                         case CEE_CLT:
12233                         case CEE_CLT_UN: {
12234                                 MonoInst *cmp, *arg1, *arg2;
12235
12236                                 CHECK_STACK (2);
12237                                 sp -= 2;
12238                                 arg1 = sp [0];
12239                                 arg2 = sp [1];
12240
12241                                 /*
12242                                  * The following transforms:
12243                                  *    CEE_CEQ    into OP_CEQ
12244                                  *    CEE_CGT    into OP_CGT
12245                                  *    CEE_CGT_UN into OP_CGT_UN
12246                                  *    CEE_CLT    into OP_CLT
12247                                  *    CEE_CLT_UN into OP_CLT_UN
12248                                  */
12249                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12250
12251                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12252                                 cmp->sreg1 = arg1->dreg;
12253                                 cmp->sreg2 = arg2->dreg;
12254                                 type_from_op (cfg, cmp, arg1, arg2);
12255                                 CHECK_TYPE (cmp);
12256                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12257                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12258                                         cmp->opcode = OP_LCOMPARE;
12259                                 else if (arg1->type == STACK_R4)
12260                                         cmp->opcode = OP_RCOMPARE;
12261                                 else if (arg1->type == STACK_R8)
12262                                         cmp->opcode = OP_FCOMPARE;
12263                                 else
12264                                         cmp->opcode = OP_ICOMPARE;
12265                                 MONO_ADD_INS (cfg->cbb, cmp);
12266                                 ins->type = STACK_I4;
12267                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12268                                 type_from_op (cfg, ins, arg1, arg2);
12269
12270                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12271                                         /*
12272                                          * The backends expect the fceq opcodes to do the
12273                                          * comparison too.
12274                                          */
12275                                         ins->sreg1 = cmp->sreg1;
12276                                         ins->sreg2 = cmp->sreg2;
12277                                         NULLIFY_INS (cmp);
12278                                 }
12279                                 MONO_ADD_INS (cfg->cbb, ins);
12280                                 *sp++ = ins;
12281                                 ip += 2;
12282                                 break;
12283                         }
12284                         case CEE_LDFTN: {
12285                                 MonoInst *argconst;
12286                                 MonoMethod *cil_method;
12287
12288                                 CHECK_STACK_OVF (1);
12289                                 CHECK_OPSIZE (6);
12290                                 n = read32 (ip + 2);
12291                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12292                                 CHECK_CFG_ERROR;
12293
12294                                 mono_class_init (cmethod->klass);
12295
12296                                 mono_save_token_info (cfg, image, n, cmethod);
12297
12298                                 context_used = mini_method_check_context_used (cfg, cmethod);
12299
12300                                 cil_method = cmethod;
12301                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12302                                         emit_method_access_failure (cfg, method, cil_method);
12303
12304                                 if (mono_security_core_clr_enabled ())
12305                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12306
12307                                 /*
12308                                  * Optimize the common case of ldftn+delegate creation
12309                                  */
12310                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12311                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12312                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12313                                                 MonoInst *target_ins, *handle_ins;
12314                                                 MonoMethod *invoke;
12315                                                 int invoke_context_used;
12316
12317                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12318                                                 if (!invoke || !mono_method_signature (invoke))
12319                                                         LOAD_ERROR;
12320
12321                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12322
12323                                                 target_ins = sp [-1];
12324
12325                                                 if (mono_security_core_clr_enabled ())
12326                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12327
12328                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12329                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12330                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12331                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12332                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12333                                                         }
12334                                                 }
12335
12336                                                 /* FIXME: SGEN support */
12337                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12338                                                         ip += 6;
12339                                                         if (cfg->verbose_level > 3)
12340                                                                 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));
12341                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12342                                                                 sp --;
12343                                                                 *sp = handle_ins;
12344                                                                 CHECK_CFG_EXCEPTION;
12345                                                                 ip += 5;
12346                                                                 sp ++;
12347                                                                 break;
12348                                                         }
12349                                                         ip -= 6;
12350                                                 }
12351                                         }
12352                                 }
12353
12354                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12355                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12356                                 *sp++ = ins;
12357
12358                                 ip += 6;
12359                                 inline_costs += 10 * num_calls++;
12360                                 break;
12361                         }
12362                         case CEE_LDVIRTFTN: {
12363                                 MonoInst *args [2];
12364
12365                                 CHECK_STACK (1);
12366                                 CHECK_OPSIZE (6);
12367                                 n = read32 (ip + 2);
12368                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12369                                 CHECK_CFG_ERROR;
12370
12371                                 mono_class_init (cmethod->klass);
12372
12373                                 context_used = mini_method_check_context_used (cfg, cmethod);
12374
12375                                 if (mono_security_core_clr_enabled ())
12376                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12377
12378                                 /*
12379                                  * Optimize the common case of ldvirtftn+delegate creation
12380                                  */
12381                                 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)) {
12382                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12383                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12384                                                 MonoInst *target_ins, *handle_ins;
12385                                                 MonoMethod *invoke;
12386                                                 int invoke_context_used;
12387                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12388
12389                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12390                                                 if (!invoke || !mono_method_signature (invoke))
12391                                                         LOAD_ERROR;
12392
12393                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12394
12395                                                 target_ins = sp [-1];
12396
12397                                                 if (mono_security_core_clr_enabled ())
12398                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12399
12400                                                 /* FIXME: SGEN support */
12401                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12402                                                         ip += 6;
12403                                                         if (cfg->verbose_level > 3)
12404                                                                 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));
12405                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12406                                                                 sp -= 2;
12407                                                                 *sp = handle_ins;
12408                                                                 CHECK_CFG_EXCEPTION;
12409                                                                 ip += 5;
12410                                                                 sp ++;
12411                                                                 break;
12412                                                         }
12413                                                         ip -= 6;
12414                                                 }
12415                                         }
12416                                 }
12417
12418                                 --sp;
12419                                 args [0] = *sp;
12420
12421                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12422                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12423
12424                                 if (context_used)
12425                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12426                                 else
12427                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12428
12429                                 ip += 6;
12430                                 inline_costs += 10 * num_calls++;
12431                                 break;
12432                         }
12433                         case CEE_LDARG:
12434                                 CHECK_STACK_OVF (1);
12435                                 CHECK_OPSIZE (4);
12436                                 n = read16 (ip + 2);
12437                                 CHECK_ARG (n);
12438                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12439                                 *sp++ = ins;
12440                                 ip += 4;
12441                                 break;
12442                         case CEE_LDARGA:
12443                                 CHECK_STACK_OVF (1);
12444                                 CHECK_OPSIZE (4);
12445                                 n = read16 (ip + 2);
12446                                 CHECK_ARG (n);
12447                                 NEW_ARGLOADA (cfg, ins, n);
12448                                 MONO_ADD_INS (cfg->cbb, ins);
12449                                 *sp++ = ins;
12450                                 ip += 4;
12451                                 break;
12452                         case CEE_STARG:
12453                                 CHECK_STACK (1);
12454                                 --sp;
12455                                 CHECK_OPSIZE (4);
12456                                 n = read16 (ip + 2);
12457                                 CHECK_ARG (n);
12458                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12459                                         UNVERIFIED;
12460                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12461                                 ip += 4;
12462                                 break;
12463                         case CEE_LDLOC:
12464                                 CHECK_STACK_OVF (1);
12465                                 CHECK_OPSIZE (4);
12466                                 n = read16 (ip + 2);
12467                                 CHECK_LOCAL (n);
12468                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12469                                 *sp++ = ins;
12470                                 ip += 4;
12471                                 break;
12472                         case CEE_LDLOCA: {
12473                                 unsigned char *tmp_ip;
12474                                 CHECK_STACK_OVF (1);
12475                                 CHECK_OPSIZE (4);
12476                                 n = read16 (ip + 2);
12477                                 CHECK_LOCAL (n);
12478
12479                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12480                                         ip = tmp_ip;
12481                                         inline_costs += 1;
12482                                         break;
12483                                 }
12484
12485                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12486                                 *sp++ = ins;
12487                                 ip += 4;
12488                                 break;
12489                         }
12490                         case CEE_STLOC:
12491                                 CHECK_STACK (1);
12492                                 --sp;
12493                                 CHECK_OPSIZE (4);
12494                                 n = read16 (ip + 2);
12495                                 CHECK_LOCAL (n);
12496                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12497                                         UNVERIFIED;
12498                                 emit_stloc_ir (cfg, sp, header, n);
12499                                 ip += 4;
12500                                 inline_costs += 1;
12501                                 break;
12502                         case CEE_LOCALLOC: {
12503                                 CHECK_STACK (1);
12504                                 MonoBasicBlock *non_zero_bb, *end_bb;
12505                                 int alloc_ptr = alloc_preg (cfg);
12506                                 --sp;
12507                                 if (sp != stack_start)
12508                                         UNVERIFIED;
12509                                 if (cfg->method != method)
12510                                         /*
12511                                          * Inlining this into a loop in a parent could lead to
12512                                          * stack overflows which is different behavior than the
12513                                          * non-inlined case, thus disable inlining in this case.
12514                                          */
12515                                         INLINE_FAILURE("localloc");
12516
12517                                 NEW_BBLOCK (cfg, non_zero_bb);
12518                                 NEW_BBLOCK (cfg, end_bb);
12519
12520                                 /* if size != zero */
12521                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12522                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12523
12524                                 //size is zero, so result is NULL
12525                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12526                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12527
12528                                 MONO_START_BB (cfg, non_zero_bb);
12529                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12530                                 ins->dreg = alloc_ptr;
12531                                 ins->sreg1 = sp [0]->dreg;
12532                                 ins->type = STACK_PTR;
12533                                 MONO_ADD_INS (cfg->cbb, ins);
12534
12535                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12536                                 if (init_locals)
12537                                         ins->flags |= MONO_INST_INIT;
12538
12539                                 MONO_START_BB (cfg, end_bb);
12540                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12541                                 ins->type = STACK_PTR;
12542
12543                                 *sp++ = ins;
12544                                 ip += 2;
12545                                 break;
12546                         }
12547                         case CEE_ENDFILTER: {
12548                                 MonoExceptionClause *clause, *nearest;
12549                                 int cc;
12550
12551                                 CHECK_STACK (1);
12552                                 --sp;
12553                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12554                                         UNVERIFIED;
12555                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12556                                 ins->sreg1 = (*sp)->dreg;
12557                                 MONO_ADD_INS (cfg->cbb, ins);
12558                                 start_new_bblock = 1;
12559                                 ip += 2;
12560
12561                                 nearest = NULL;
12562                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12563                                         clause = &header->clauses [cc];
12564                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12565                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12566                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12567                                                 nearest = clause;
12568                                 }
12569                                 g_assert (nearest);
12570                                 if ((ip - header->code) != nearest->handler_offset)
12571                                         UNVERIFIED;
12572
12573                                 break;
12574                         }
12575                         case CEE_UNALIGNED_:
12576                                 ins_flag |= MONO_INST_UNALIGNED;
12577                                 /* FIXME: record alignment? we can assume 1 for now */
12578                                 CHECK_OPSIZE (3);
12579                                 ip += 3;
12580                                 break;
12581                         case CEE_VOLATILE_:
12582                                 ins_flag |= MONO_INST_VOLATILE;
12583                                 ip += 2;
12584                                 break;
12585                         case CEE_TAIL_:
12586                                 ins_flag   |= MONO_INST_TAILCALL;
12587                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12588                                 /* Can't inline tail calls at this time */
12589                                 inline_costs += 100000;
12590                                 ip += 2;
12591                                 break;
12592                         case CEE_INITOBJ:
12593                                 CHECK_STACK (1);
12594                                 --sp;
12595                                 CHECK_OPSIZE (6);
12596                                 token = read32 (ip + 2);
12597                                 klass = mini_get_class (method, token, generic_context);
12598                                 CHECK_TYPELOAD (klass);
12599                                 if (generic_class_is_reference_type (cfg, klass))
12600                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12601                                 else
12602                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12603                                 ip += 6;
12604                                 inline_costs += 1;
12605                                 break;
12606                         case CEE_CONSTRAINED_:
12607                                 CHECK_OPSIZE (6);
12608                                 token = read32 (ip + 2);
12609                                 constrained_class = mini_get_class (method, token, generic_context);
12610                                 CHECK_TYPELOAD (constrained_class);
12611                                 ip += 6;
12612                                 break;
12613                         case CEE_CPBLK:
12614                                 CHECK_STACK (3);
12615                                 sp -= 3;
12616                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12617                                 ip += 2;
12618                                 ins_flag = 0;
12619                                 inline_costs += 1;
12620                                 break;
12621                         case CEE_INITBLK:
12622                                 CHECK_STACK (3);
12623                                 sp -= 3;
12624                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12625                                 ip += 2;
12626                                 ins_flag = 0;
12627                                 inline_costs += 1;
12628                                 break;
12629                         case CEE_NO_:
12630                                 CHECK_OPSIZE (3);
12631                                 if (ip [2] & 0x1)
12632                                         ins_flag |= MONO_INST_NOTYPECHECK;
12633                                 if (ip [2] & 0x2)
12634                                         ins_flag |= MONO_INST_NORANGECHECK;
12635                                 /* we ignore the no-nullcheck for now since we
12636                                  * really do it explicitly only when doing callvirt->call
12637                                  */
12638                                 ip += 3;
12639                                 break;
12640                         case CEE_RETHROW: {
12641                                 MonoInst *load;
12642                                 int handler_offset = -1;
12643
12644                                 for (i = 0; i < header->num_clauses; ++i) {
12645                                         MonoExceptionClause *clause = &header->clauses [i];
12646                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12647                                                 handler_offset = clause->handler_offset;
12648                                                 break;
12649                                         }
12650                                 }
12651
12652                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12653
12654                                 if (handler_offset == -1)
12655                                         UNVERIFIED;
12656
12657                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12658                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12659                                 ins->sreg1 = load->dreg;
12660                                 MONO_ADD_INS (cfg->cbb, ins);
12661
12662                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12663                                 MONO_ADD_INS (cfg->cbb, ins);
12664
12665                                 sp = stack_start;
12666                                 link_bblock (cfg, cfg->cbb, end_bblock);
12667                                 start_new_bblock = 1;
12668                                 ip += 2;
12669                                 break;
12670                         }
12671                         case CEE_SIZEOF: {
12672                                 guint32 val;
12673                                 int ialign;
12674
12675                                 CHECK_STACK_OVF (1);
12676                                 CHECK_OPSIZE (6);
12677                                 token = read32 (ip + 2);
12678                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12679                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12680                                         CHECK_CFG_ERROR;
12681
12682                                         val = mono_type_size (type, &ialign);
12683                                 } else {
12684                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12685                                         CHECK_TYPELOAD (klass);
12686
12687                                         val = mono_type_size (&klass->byval_arg, &ialign);
12688
12689                                         if (mini_is_gsharedvt_klass (klass))
12690                                                 GSHAREDVT_FAILURE (*ip);
12691                                 }
12692                                 EMIT_NEW_ICONST (cfg, ins, val);
12693                                 *sp++= ins;
12694                                 ip += 6;
12695                                 break;
12696                         }
12697                         case CEE_REFANYTYPE: {
12698                                 MonoInst *src_var, *src;
12699
12700                                 GSHAREDVT_FAILURE (*ip);
12701
12702                                 CHECK_STACK (1);
12703                                 --sp;
12704
12705                                 // FIXME:
12706                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12707                                 if (!src_var)
12708                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12709                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12710                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12711                                 *sp++ = ins;
12712                                 ip += 2;
12713                                 break;
12714                         }
12715                         case CEE_READONLY_:
12716                                 readonly = TRUE;
12717                                 ip += 2;
12718                                 break;
12719
12720                         case CEE_UNUSED56:
12721                         case CEE_UNUSED57:
12722                         case CEE_UNUSED70:
12723                         case CEE_UNUSED:
12724                         case CEE_UNUSED99:
12725                                 UNVERIFIED;
12726
12727                         default:
12728                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12729                                 UNVERIFIED;
12730                         }
12731                         break;
12732                 }
12733                 case CEE_UNUSED58:
12734                 case CEE_UNUSED1:
12735                         UNVERIFIED;
12736
12737                 default:
12738                         g_warning ("opcode 0x%02x not handled", *ip);
12739                         UNVERIFIED;
12740                 }
12741         }
12742         if (start_new_bblock != 1)
12743                 UNVERIFIED;
12744
12745         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12746         if (cfg->cbb->next_bb) {
12747                 /* This could already be set because of inlining, #693905 */
12748                 MonoBasicBlock *bb = cfg->cbb;
12749
12750                 while (bb->next_bb)
12751                         bb = bb->next_bb;
12752                 bb->next_bb = end_bblock;
12753         } else {
12754                 cfg->cbb->next_bb = end_bblock;
12755         }
12756
12757         if (cfg->method == method && cfg->domainvar) {
12758                 MonoInst *store;
12759                 MonoInst *get_domain;
12760
12761                 cfg->cbb = init_localsbb;
12762
12763                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12764                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12765                 MONO_ADD_INS (cfg->cbb, store);
12766         }
12767
12768 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12769         if (cfg->compile_aot)
12770                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12771                 mono_get_got_var (cfg);
12772 #endif
12773
12774         if (cfg->method == method && cfg->got_var)
12775                 mono_emit_load_got_addr (cfg);
12776
12777         if (init_localsbb) {
12778                 cfg->cbb = init_localsbb;
12779                 cfg->ip = NULL;
12780                 for (i = 0; i < header->num_locals; ++i) {
12781                         emit_init_local (cfg, i, header->locals [i], init_locals);
12782                 }
12783         }
12784
12785         if (cfg->init_ref_vars && cfg->method == method) {
12786                 /* Emit initialization for ref vars */
12787                 // FIXME: Avoid duplication initialization for IL locals.
12788                 for (i = 0; i < cfg->num_varinfo; ++i) {
12789                         MonoInst *ins = cfg->varinfo [i];
12790
12791                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12792                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12793                 }
12794         }
12795
12796         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12797                 cfg->cbb = init_localsbb;
12798                 emit_push_lmf (cfg);
12799         }
12800
12801         cfg->cbb = init_localsbb;
12802         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12803
12804         if (seq_points) {
12805                 MonoBasicBlock *bb;
12806
12807                 /*
12808                  * Make seq points at backward branch targets interruptable.
12809                  */
12810                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12811                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12812                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12813         }
12814
12815         /* Add a sequence point for method entry/exit events */
12816         if (seq_points && cfg->gen_sdb_seq_points) {
12817                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12818                 MONO_ADD_INS (init_localsbb, ins);
12819                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12820                 MONO_ADD_INS (cfg->bb_exit, ins);
12821         }
12822
12823         /*
12824          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12825          * the code they refer to was dead (#11880).
12826          */
12827         if (sym_seq_points) {
12828                 for (i = 0; i < header->code_size; ++i) {
12829                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12830                                 MonoInst *ins;
12831
12832                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12833                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12834                         }
12835                 }
12836         }
12837
12838         cfg->ip = NULL;
12839
12840         if (cfg->method == method) {
12841                 MonoBasicBlock *bb;
12842                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12843                         if (bb == cfg->bb_init)
12844                                 bb->region = -1;
12845                         else
12846                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12847                         if (cfg->spvars)
12848                                 mono_create_spvar_for_region (cfg, bb->region);
12849                         if (cfg->verbose_level > 2)
12850                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12851                 }
12852         } else {
12853                 MonoBasicBlock *bb;
12854                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12855                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12856                         bb->real_offset = inline_offset;
12857                 }
12858         }
12859
12860         if (inline_costs < 0) {
12861                 char *mname;
12862
12863                 /* Method is too large */
12864                 mname = mono_method_full_name (method, TRUE);
12865                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12866                 g_free (mname);
12867         }
12868
12869         if ((cfg->verbose_level > 2) && (cfg->method == method))
12870                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12871
12872         goto cleanup;
12873
12874 mono_error_exit:
12875         g_assert (!mono_error_ok (&cfg->error));
12876         goto cleanup;
12877
12878  exception_exit:
12879         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12880         goto cleanup;
12881
12882  unverified:
12883         set_exception_type_from_invalid_il (cfg, method, ip);
12884         goto cleanup;
12885
12886  cleanup:
12887         g_slist_free (class_inits);
12888         mono_basic_block_free (original_bb);
12889         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12890         if (cfg->exception_type)
12891                 return -1;
12892         else
12893                 return inline_costs;
12894 }
12895
12896 static int
12897 store_membase_reg_to_store_membase_imm (int opcode)
12898 {
12899         switch (opcode) {
12900         case OP_STORE_MEMBASE_REG:
12901                 return OP_STORE_MEMBASE_IMM;
12902         case OP_STOREI1_MEMBASE_REG:
12903                 return OP_STOREI1_MEMBASE_IMM;
12904         case OP_STOREI2_MEMBASE_REG:
12905                 return OP_STOREI2_MEMBASE_IMM;
12906         case OP_STOREI4_MEMBASE_REG:
12907                 return OP_STOREI4_MEMBASE_IMM;
12908         case OP_STOREI8_MEMBASE_REG:
12909                 return OP_STOREI8_MEMBASE_IMM;
12910         default:
12911                 g_assert_not_reached ();
12912         }
12913
12914         return -1;
12915 }
12916
12917 int
12918 mono_op_to_op_imm (int opcode)
12919 {
12920         switch (opcode) {
12921         case OP_IADD:
12922                 return OP_IADD_IMM;
12923         case OP_ISUB:
12924                 return OP_ISUB_IMM;
12925         case OP_IDIV:
12926                 return OP_IDIV_IMM;
12927         case OP_IDIV_UN:
12928                 return OP_IDIV_UN_IMM;
12929         case OP_IREM:
12930                 return OP_IREM_IMM;
12931         case OP_IREM_UN:
12932                 return OP_IREM_UN_IMM;
12933         case OP_IMUL:
12934                 return OP_IMUL_IMM;
12935         case OP_IAND:
12936                 return OP_IAND_IMM;
12937         case OP_IOR:
12938                 return OP_IOR_IMM;
12939         case OP_IXOR:
12940                 return OP_IXOR_IMM;
12941         case OP_ISHL:
12942                 return OP_ISHL_IMM;
12943         case OP_ISHR:
12944                 return OP_ISHR_IMM;
12945         case OP_ISHR_UN:
12946                 return OP_ISHR_UN_IMM;
12947
12948         case OP_LADD:
12949                 return OP_LADD_IMM;
12950         case OP_LSUB:
12951                 return OP_LSUB_IMM;
12952         case OP_LAND:
12953                 return OP_LAND_IMM;
12954         case OP_LOR:
12955                 return OP_LOR_IMM;
12956         case OP_LXOR:
12957                 return OP_LXOR_IMM;
12958         case OP_LSHL:
12959                 return OP_LSHL_IMM;
12960         case OP_LSHR:
12961                 return OP_LSHR_IMM;
12962         case OP_LSHR_UN:
12963                 return OP_LSHR_UN_IMM;
12964 #if SIZEOF_REGISTER == 8
12965         case OP_LREM:
12966                 return OP_LREM_IMM;
12967 #endif
12968
12969         case OP_COMPARE:
12970                 return OP_COMPARE_IMM;
12971         case OP_ICOMPARE:
12972                 return OP_ICOMPARE_IMM;
12973         case OP_LCOMPARE:
12974                 return OP_LCOMPARE_IMM;
12975
12976         case OP_STORE_MEMBASE_REG:
12977                 return OP_STORE_MEMBASE_IMM;
12978         case OP_STOREI1_MEMBASE_REG:
12979                 return OP_STOREI1_MEMBASE_IMM;
12980         case OP_STOREI2_MEMBASE_REG:
12981                 return OP_STOREI2_MEMBASE_IMM;
12982         case OP_STOREI4_MEMBASE_REG:
12983                 return OP_STOREI4_MEMBASE_IMM;
12984
12985 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12986         case OP_X86_PUSH:
12987                 return OP_X86_PUSH_IMM;
12988         case OP_X86_COMPARE_MEMBASE_REG:
12989                 return OP_X86_COMPARE_MEMBASE_IMM;
12990 #endif
12991 #if defined(TARGET_AMD64)
12992         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12993                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12994 #endif
12995         case OP_VOIDCALL_REG:
12996                 return OP_VOIDCALL;
12997         case OP_CALL_REG:
12998                 return OP_CALL;
12999         case OP_LCALL_REG:
13000                 return OP_LCALL;
13001         case OP_FCALL_REG:
13002                 return OP_FCALL;
13003         case OP_LOCALLOC:
13004                 return OP_LOCALLOC_IMM;
13005         }
13006
13007         return -1;
13008 }
13009
13010 static int
13011 ldind_to_load_membase (int opcode)
13012 {
13013         switch (opcode) {
13014         case CEE_LDIND_I1:
13015                 return OP_LOADI1_MEMBASE;
13016         case CEE_LDIND_U1:
13017                 return OP_LOADU1_MEMBASE;
13018         case CEE_LDIND_I2:
13019                 return OP_LOADI2_MEMBASE;
13020         case CEE_LDIND_U2:
13021                 return OP_LOADU2_MEMBASE;
13022         case CEE_LDIND_I4:
13023                 return OP_LOADI4_MEMBASE;
13024         case CEE_LDIND_U4:
13025                 return OP_LOADU4_MEMBASE;
13026         case CEE_LDIND_I:
13027                 return OP_LOAD_MEMBASE;
13028         case CEE_LDIND_REF:
13029                 return OP_LOAD_MEMBASE;
13030         case CEE_LDIND_I8:
13031                 return OP_LOADI8_MEMBASE;
13032         case CEE_LDIND_R4:
13033                 return OP_LOADR4_MEMBASE;
13034         case CEE_LDIND_R8:
13035                 return OP_LOADR8_MEMBASE;
13036         default:
13037                 g_assert_not_reached ();
13038         }
13039
13040         return -1;
13041 }
13042
13043 static int
13044 stind_to_store_membase (int opcode)
13045 {
13046         switch (opcode) {
13047         case CEE_STIND_I1:
13048                 return OP_STOREI1_MEMBASE_REG;
13049         case CEE_STIND_I2:
13050                 return OP_STOREI2_MEMBASE_REG;
13051         case CEE_STIND_I4:
13052                 return OP_STOREI4_MEMBASE_REG;
13053         case CEE_STIND_I:
13054         case CEE_STIND_REF:
13055                 return OP_STORE_MEMBASE_REG;
13056         case CEE_STIND_I8:
13057                 return OP_STOREI8_MEMBASE_REG;
13058         case CEE_STIND_R4:
13059                 return OP_STORER4_MEMBASE_REG;
13060         case CEE_STIND_R8:
13061                 return OP_STORER8_MEMBASE_REG;
13062         default:
13063                 g_assert_not_reached ();
13064         }
13065
13066         return -1;
13067 }
13068
13069 int
13070 mono_load_membase_to_load_mem (int opcode)
13071 {
13072         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13073 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13074         switch (opcode) {
13075         case OP_LOAD_MEMBASE:
13076                 return OP_LOAD_MEM;
13077         case OP_LOADU1_MEMBASE:
13078                 return OP_LOADU1_MEM;
13079         case OP_LOADU2_MEMBASE:
13080                 return OP_LOADU2_MEM;
13081         case OP_LOADI4_MEMBASE:
13082                 return OP_LOADI4_MEM;
13083         case OP_LOADU4_MEMBASE:
13084                 return OP_LOADU4_MEM;
13085 #if SIZEOF_REGISTER == 8
13086         case OP_LOADI8_MEMBASE:
13087                 return OP_LOADI8_MEM;
13088 #endif
13089         }
13090 #endif
13091
13092         return -1;
13093 }
13094
13095 static inline int
13096 op_to_op_dest_membase (int store_opcode, int opcode)
13097 {
13098 #if defined(TARGET_X86)
13099         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13100                 return -1;
13101
13102         switch (opcode) {
13103         case OP_IADD:
13104                 return OP_X86_ADD_MEMBASE_REG;
13105         case OP_ISUB:
13106                 return OP_X86_SUB_MEMBASE_REG;
13107         case OP_IAND:
13108                 return OP_X86_AND_MEMBASE_REG;
13109         case OP_IOR:
13110                 return OP_X86_OR_MEMBASE_REG;
13111         case OP_IXOR:
13112                 return OP_X86_XOR_MEMBASE_REG;
13113         case OP_ADD_IMM:
13114         case OP_IADD_IMM:
13115                 return OP_X86_ADD_MEMBASE_IMM;
13116         case OP_SUB_IMM:
13117         case OP_ISUB_IMM:
13118                 return OP_X86_SUB_MEMBASE_IMM;
13119         case OP_AND_IMM:
13120         case OP_IAND_IMM:
13121                 return OP_X86_AND_MEMBASE_IMM;
13122         case OP_OR_IMM:
13123         case OP_IOR_IMM:
13124                 return OP_X86_OR_MEMBASE_IMM;
13125         case OP_XOR_IMM:
13126         case OP_IXOR_IMM:
13127                 return OP_X86_XOR_MEMBASE_IMM;
13128         case OP_MOVE:
13129                 return OP_NOP;
13130         }
13131 #endif
13132
13133 #if defined(TARGET_AMD64)
13134         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13135                 return -1;
13136
13137         switch (opcode) {
13138         case OP_IADD:
13139                 return OP_X86_ADD_MEMBASE_REG;
13140         case OP_ISUB:
13141                 return OP_X86_SUB_MEMBASE_REG;
13142         case OP_IAND:
13143                 return OP_X86_AND_MEMBASE_REG;
13144         case OP_IOR:
13145                 return OP_X86_OR_MEMBASE_REG;
13146         case OP_IXOR:
13147                 return OP_X86_XOR_MEMBASE_REG;
13148         case OP_IADD_IMM:
13149                 return OP_X86_ADD_MEMBASE_IMM;
13150         case OP_ISUB_IMM:
13151                 return OP_X86_SUB_MEMBASE_IMM;
13152         case OP_IAND_IMM:
13153                 return OP_X86_AND_MEMBASE_IMM;
13154         case OP_IOR_IMM:
13155                 return OP_X86_OR_MEMBASE_IMM;
13156         case OP_IXOR_IMM:
13157                 return OP_X86_XOR_MEMBASE_IMM;
13158         case OP_LADD:
13159                 return OP_AMD64_ADD_MEMBASE_REG;
13160         case OP_LSUB:
13161                 return OP_AMD64_SUB_MEMBASE_REG;
13162         case OP_LAND:
13163                 return OP_AMD64_AND_MEMBASE_REG;
13164         case OP_LOR:
13165                 return OP_AMD64_OR_MEMBASE_REG;
13166         case OP_LXOR:
13167                 return OP_AMD64_XOR_MEMBASE_REG;
13168         case OP_ADD_IMM:
13169         case OP_LADD_IMM:
13170                 return OP_AMD64_ADD_MEMBASE_IMM;
13171         case OP_SUB_IMM:
13172         case OP_LSUB_IMM:
13173                 return OP_AMD64_SUB_MEMBASE_IMM;
13174         case OP_AND_IMM:
13175         case OP_LAND_IMM:
13176                 return OP_AMD64_AND_MEMBASE_IMM;
13177         case OP_OR_IMM:
13178         case OP_LOR_IMM:
13179                 return OP_AMD64_OR_MEMBASE_IMM;
13180         case OP_XOR_IMM:
13181         case OP_LXOR_IMM:
13182                 return OP_AMD64_XOR_MEMBASE_IMM;
13183         case OP_MOVE:
13184                 return OP_NOP;
13185         }
13186 #endif
13187
13188         return -1;
13189 }
13190
13191 static inline int
13192 op_to_op_store_membase (int store_opcode, int opcode)
13193 {
13194 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13195         switch (opcode) {
13196         case OP_ICEQ:
13197                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13198                         return OP_X86_SETEQ_MEMBASE;
13199         case OP_CNE:
13200                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13201                         return OP_X86_SETNE_MEMBASE;
13202         }
13203 #endif
13204
13205         return -1;
13206 }
13207
13208 static inline int
13209 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13210 {
13211 #ifdef TARGET_X86
13212         /* FIXME: This has sign extension issues */
13213         /*
13214         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13215                 return OP_X86_COMPARE_MEMBASE8_IMM;
13216         */
13217
13218         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13219                 return -1;
13220
13221         switch (opcode) {
13222         case OP_X86_PUSH:
13223                 return OP_X86_PUSH_MEMBASE;
13224         case OP_COMPARE_IMM:
13225         case OP_ICOMPARE_IMM:
13226                 return OP_X86_COMPARE_MEMBASE_IMM;
13227         case OP_COMPARE:
13228         case OP_ICOMPARE:
13229                 return OP_X86_COMPARE_MEMBASE_REG;
13230         }
13231 #endif
13232
13233 #ifdef TARGET_AMD64
13234         /* FIXME: This has sign extension issues */
13235         /*
13236         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13237                 return OP_X86_COMPARE_MEMBASE8_IMM;
13238         */
13239
13240         switch (opcode) {
13241         case OP_X86_PUSH:
13242                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13243                         return OP_X86_PUSH_MEMBASE;
13244                 break;
13245                 /* FIXME: This only works for 32 bit immediates
13246         case OP_COMPARE_IMM:
13247         case OP_LCOMPARE_IMM:
13248                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13249                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13250                 */
13251         case OP_ICOMPARE_IMM:
13252                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13253                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13254                 break;
13255         case OP_COMPARE:
13256         case OP_LCOMPARE:
13257                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13258                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13259                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13260                         return OP_AMD64_COMPARE_MEMBASE_REG;
13261                 break;
13262         case OP_ICOMPARE:
13263                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13264                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13265                 break;
13266         }
13267 #endif
13268
13269         return -1;
13270 }
13271
13272 static inline int
13273 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13274 {
13275 #ifdef TARGET_X86
13276         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13277                 return -1;
13278
13279         switch (opcode) {
13280         case OP_COMPARE:
13281         case OP_ICOMPARE:
13282                 return OP_X86_COMPARE_REG_MEMBASE;
13283         case OP_IADD:
13284                 return OP_X86_ADD_REG_MEMBASE;
13285         case OP_ISUB:
13286                 return OP_X86_SUB_REG_MEMBASE;
13287         case OP_IAND:
13288                 return OP_X86_AND_REG_MEMBASE;
13289         case OP_IOR:
13290                 return OP_X86_OR_REG_MEMBASE;
13291         case OP_IXOR:
13292                 return OP_X86_XOR_REG_MEMBASE;
13293         }
13294 #endif
13295
13296 #ifdef TARGET_AMD64
13297         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13298                 switch (opcode) {
13299                 case OP_ICOMPARE:
13300                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13301                 case OP_IADD:
13302                         return OP_X86_ADD_REG_MEMBASE;
13303                 case OP_ISUB:
13304                         return OP_X86_SUB_REG_MEMBASE;
13305                 case OP_IAND:
13306                         return OP_X86_AND_REG_MEMBASE;
13307                 case OP_IOR:
13308                         return OP_X86_OR_REG_MEMBASE;
13309                 case OP_IXOR:
13310                         return OP_X86_XOR_REG_MEMBASE;
13311                 }
13312         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13313                 switch (opcode) {
13314                 case OP_COMPARE:
13315                 case OP_LCOMPARE:
13316                         return OP_AMD64_COMPARE_REG_MEMBASE;
13317                 case OP_LADD:
13318                         return OP_AMD64_ADD_REG_MEMBASE;
13319                 case OP_LSUB:
13320                         return OP_AMD64_SUB_REG_MEMBASE;
13321                 case OP_LAND:
13322                         return OP_AMD64_AND_REG_MEMBASE;
13323                 case OP_LOR:
13324                         return OP_AMD64_OR_REG_MEMBASE;
13325                 case OP_LXOR:
13326                         return OP_AMD64_XOR_REG_MEMBASE;
13327                 }
13328         }
13329 #endif
13330
13331         return -1;
13332 }
13333
13334 int
13335 mono_op_to_op_imm_noemul (int opcode)
13336 {
13337         switch (opcode) {
13338 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13339         case OP_LSHR:
13340         case OP_LSHL:
13341         case OP_LSHR_UN:
13342                 return -1;
13343 #endif
13344 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13345         case OP_IDIV:
13346         case OP_IDIV_UN:
13347         case OP_IREM:
13348         case OP_IREM_UN:
13349                 return -1;
13350 #endif
13351 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13352         case OP_IMUL:
13353                 return -1;
13354 #endif
13355         default:
13356                 return mono_op_to_op_imm (opcode);
13357         }
13358 }
13359
13360 /**
13361  * mono_handle_global_vregs:
13362  *
13363  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13364  * for them.
13365  */
13366 void
13367 mono_handle_global_vregs (MonoCompile *cfg)
13368 {
13369         gint32 *vreg_to_bb;
13370         MonoBasicBlock *bb;
13371         int i, pos;
13372
13373         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13374
13375 #ifdef MONO_ARCH_SIMD_INTRINSICS
13376         if (cfg->uses_simd_intrinsics)
13377                 mono_simd_simplify_indirection (cfg);
13378 #endif
13379
13380         /* Find local vregs used in more than one bb */
13381         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13382                 MonoInst *ins = bb->code;
13383                 int block_num = bb->block_num;
13384
13385                 if (cfg->verbose_level > 2)
13386                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13387
13388                 cfg->cbb = bb;
13389                 for (; ins; ins = ins->next) {
13390                         const char *spec = INS_INFO (ins->opcode);
13391                         int regtype = 0, regindex;
13392                         gint32 prev_bb;
13393
13394                         if (G_UNLIKELY (cfg->verbose_level > 2))
13395                                 mono_print_ins (ins);
13396
13397                         g_assert (ins->opcode >= MONO_CEE_LAST);
13398
13399                         for (regindex = 0; regindex < 4; regindex ++) {
13400                                 int vreg = 0;
13401
13402                                 if (regindex == 0) {
13403                                         regtype = spec [MONO_INST_DEST];
13404                                         if (regtype == ' ')
13405                                                 continue;
13406                                         vreg = ins->dreg;
13407                                 } else if (regindex == 1) {
13408                                         regtype = spec [MONO_INST_SRC1];
13409                                         if (regtype == ' ')
13410                                                 continue;
13411                                         vreg = ins->sreg1;
13412                                 } else if (regindex == 2) {
13413                                         regtype = spec [MONO_INST_SRC2];
13414                                         if (regtype == ' ')
13415                                                 continue;
13416                                         vreg = ins->sreg2;
13417                                 } else if (regindex == 3) {
13418                                         regtype = spec [MONO_INST_SRC3];
13419                                         if (regtype == ' ')
13420                                                 continue;
13421                                         vreg = ins->sreg3;
13422                                 }
13423
13424 #if SIZEOF_REGISTER == 4
13425                                 /* In the LLVM case, the long opcodes are not decomposed */
13426                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13427                                         /*
13428                                          * Since some instructions reference the original long vreg,
13429                                          * and some reference the two component vregs, it is quite hard
13430                                          * to determine when it needs to be global. So be conservative.
13431                                          */
13432                                         if (!get_vreg_to_inst (cfg, vreg)) {
13433                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13434
13435                                                 if (cfg->verbose_level > 2)
13436                                                         printf ("LONG VREG R%d made global.\n", vreg);
13437                                         }
13438
13439                                         /*
13440                                          * Make the component vregs volatile since the optimizations can
13441                                          * get confused otherwise.
13442                                          */
13443                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13444                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13445                                 }
13446 #endif
13447
13448                                 g_assert (vreg != -1);
13449
13450                                 prev_bb = vreg_to_bb [vreg];
13451                                 if (prev_bb == 0) {
13452                                         /* 0 is a valid block num */
13453                                         vreg_to_bb [vreg] = block_num + 1;
13454                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13455                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13456                                                 continue;
13457
13458                                         if (!get_vreg_to_inst (cfg, vreg)) {
13459                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13460                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13461
13462                                                 switch (regtype) {
13463                                                 case 'i':
13464                                                         if (vreg_is_ref (cfg, vreg))
13465                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13466                                                         else
13467                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13468                                                         break;
13469                                                 case 'l':
13470                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13471                                                         break;
13472                                                 case 'f':
13473                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13474                                                         break;
13475                                                 case 'v':
13476                                                 case 'x':
13477                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13478                                                         break;
13479                                                 default:
13480                                                         g_assert_not_reached ();
13481                                                 }
13482                                         }
13483
13484                                         /* Flag as having been used in more than one bb */
13485                                         vreg_to_bb [vreg] = -1;
13486                                 }
13487                         }
13488                 }
13489         }
13490
13491         /* If a variable is used in only one bblock, convert it into a local vreg */
13492         for (i = 0; i < cfg->num_varinfo; i++) {
13493                 MonoInst *var = cfg->varinfo [i];
13494                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13495
13496                 switch (var->type) {
13497                 case STACK_I4:
13498                 case STACK_OBJ:
13499                 case STACK_PTR:
13500                 case STACK_MP:
13501                 case STACK_VTYPE:
13502 #if SIZEOF_REGISTER == 8
13503                 case STACK_I8:
13504 #endif
13505 #if !defined(TARGET_X86)
13506                 /* Enabling this screws up the fp stack on x86 */
13507                 case STACK_R8:
13508 #endif
13509                         if (mono_arch_is_soft_float ())
13510                                 break;
13511
13512                         /*
13513                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13514                                 break;
13515                         */
13516
13517                         /* Arguments are implicitly global */
13518                         /* Putting R4 vars into registers doesn't work currently */
13519                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13520                         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) {
13521                                 /*
13522                                  * Make that the variable's liveness interval doesn't contain a call, since
13523                                  * that would cause the lvreg to be spilled, making the whole optimization
13524                                  * useless.
13525                                  */
13526                                 /* This is too slow for JIT compilation */
13527 #if 0
13528                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13529                                         MonoInst *ins;
13530                                         int def_index, call_index, ins_index;
13531                                         gboolean spilled = FALSE;
13532
13533                                         def_index = -1;
13534                                         call_index = -1;
13535                                         ins_index = 0;
13536                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13537                                                 const char *spec = INS_INFO (ins->opcode);
13538
13539                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13540                                                         def_index = ins_index;
13541
13542                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13543                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13544                                                         if (call_index > def_index) {
13545                                                                 spilled = TRUE;
13546                                                                 break;
13547                                                         }
13548                                                 }
13549
13550                                                 if (MONO_IS_CALL (ins))
13551                                                         call_index = ins_index;
13552
13553                                                 ins_index ++;
13554                                         }
13555
13556                                         if (spilled)
13557                                                 break;
13558                                 }
13559 #endif
13560
13561                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13562                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13563                                 var->flags |= MONO_INST_IS_DEAD;
13564                                 cfg->vreg_to_inst [var->dreg] = NULL;
13565                         }
13566                         break;
13567                 }
13568         }
13569
13570         /*
13571          * Compress the varinfo and vars tables so the liveness computation is faster and
13572          * takes up less space.
13573          */
13574         pos = 0;
13575         for (i = 0; i < cfg->num_varinfo; ++i) {
13576                 MonoInst *var = cfg->varinfo [i];
13577                 if (pos < i && cfg->locals_start == i)
13578                         cfg->locals_start = pos;
13579                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13580                         if (pos < i) {
13581                                 cfg->varinfo [pos] = cfg->varinfo [i];
13582                                 cfg->varinfo [pos]->inst_c0 = pos;
13583                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13584                                 cfg->vars [pos].idx = pos;
13585 #if SIZEOF_REGISTER == 4
13586                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13587                                         /* Modify the two component vars too */
13588                                         MonoInst *var1;
13589
13590                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13591                                         var1->inst_c0 = pos;
13592                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13593                                         var1->inst_c0 = pos;
13594                                 }
13595 #endif
13596                         }
13597                         pos ++;
13598                 }
13599         }
13600         cfg->num_varinfo = pos;
13601         if (cfg->locals_start > cfg->num_varinfo)
13602                 cfg->locals_start = cfg->num_varinfo;
13603 }
13604
13605 /*
13606  * mono_allocate_gsharedvt_vars:
13607  *
13608  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13609  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13610  */
13611 void
13612 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13613 {
13614         int i;
13615
13616         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13617
13618         for (i = 0; i < cfg->num_varinfo; ++i) {
13619                 MonoInst *ins = cfg->varinfo [i];
13620                 int idx;
13621
13622                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13623                         if (i >= cfg->locals_start) {
13624                                 /* Local */
13625                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13626                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13627                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13628                                 ins->inst_imm = idx;
13629                         } else {
13630                                 /* Arg */
13631                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13632                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13633                         }
13634                 }
13635         }
13636 }
13637
13638 /**
13639  * mono_spill_global_vars:
13640  *
13641  *   Generate spill code for variables which are not allocated to registers,
13642  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13643  * code is generated which could be optimized by the local optimization passes.
13644  */
13645 void
13646 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13647 {
13648         MonoBasicBlock *bb;
13649         char spec2 [16];
13650         int orig_next_vreg;
13651         guint32 *vreg_to_lvreg;
13652         guint32 *lvregs;
13653         guint32 i, lvregs_len, lvregs_size;
13654         gboolean dest_has_lvreg = FALSE;
13655         MonoStackType stacktypes [128];
13656         MonoInst **live_range_start, **live_range_end;
13657         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13658
13659         *need_local_opts = FALSE;
13660
13661         memset (spec2, 0, sizeof (spec2));
13662
13663         /* FIXME: Move this function to mini.c */
13664         stacktypes ['i'] = STACK_PTR;
13665         stacktypes ['l'] = STACK_I8;
13666         stacktypes ['f'] = STACK_R8;
13667 #ifdef MONO_ARCH_SIMD_INTRINSICS
13668         stacktypes ['x'] = STACK_VTYPE;
13669 #endif
13670
13671 #if SIZEOF_REGISTER == 4
13672         /* Create MonoInsts for longs */
13673         for (i = 0; i < cfg->num_varinfo; i++) {
13674                 MonoInst *ins = cfg->varinfo [i];
13675
13676                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13677                         switch (ins->type) {
13678                         case STACK_R8:
13679                         case STACK_I8: {
13680                                 MonoInst *tree;
13681
13682                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13683                                         break;
13684
13685                                 g_assert (ins->opcode == OP_REGOFFSET);
13686
13687                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13688                                 g_assert (tree);
13689                                 tree->opcode = OP_REGOFFSET;
13690                                 tree->inst_basereg = ins->inst_basereg;
13691                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13692
13693                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13694                                 g_assert (tree);
13695                                 tree->opcode = OP_REGOFFSET;
13696                                 tree->inst_basereg = ins->inst_basereg;
13697                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13698                                 break;
13699                         }
13700                         default:
13701                                 break;
13702                         }
13703                 }
13704         }
13705 #endif
13706
13707         if (cfg->compute_gc_maps) {
13708                 /* registers need liveness info even for !non refs */
13709                 for (i = 0; i < cfg->num_varinfo; i++) {
13710                         MonoInst *ins = cfg->varinfo [i];
13711
13712                         if (ins->opcode == OP_REGVAR)
13713                                 ins->flags |= MONO_INST_GC_TRACK;
13714                 }
13715         }
13716
13717         /* FIXME: widening and truncation */
13718
13719         /*
13720          * As an optimization, when a variable allocated to the stack is first loaded into
13721          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13722          * the variable again.
13723          */
13724         orig_next_vreg = cfg->next_vreg;
13725         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13726         lvregs_size = 1024;
13727         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13728         lvregs_len = 0;
13729
13730         /*
13731          * These arrays contain the first and last instructions accessing a given
13732          * variable.
13733          * Since we emit bblocks in the same order we process them here, and we
13734          * don't split live ranges, these will precisely describe the live range of
13735          * the variable, i.e. the instruction range where a valid value can be found
13736          * in the variables location.
13737          * The live range is computed using the liveness info computed by the liveness pass.
13738          * We can't use vmv->range, since that is an abstract live range, and we need
13739          * one which is instruction precise.
13740          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13741          */
13742         /* FIXME: Only do this if debugging info is requested */
13743         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13744         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13745         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13746         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13747
13748         /* Add spill loads/stores */
13749         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13750                 MonoInst *ins;
13751
13752                 if (cfg->verbose_level > 2)
13753                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13754
13755                 /* Clear vreg_to_lvreg array */
13756                 for (i = 0; i < lvregs_len; i++)
13757                         vreg_to_lvreg [lvregs [i]] = 0;
13758                 lvregs_len = 0;
13759
13760                 cfg->cbb = bb;
13761                 MONO_BB_FOR_EACH_INS (bb, ins) {
13762                         const char *spec = INS_INFO (ins->opcode);
13763                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13764                         gboolean store, no_lvreg;
13765                         int sregs [MONO_MAX_SRC_REGS];
13766
13767                         if (G_UNLIKELY (cfg->verbose_level > 2))
13768                                 mono_print_ins (ins);
13769
13770                         if (ins->opcode == OP_NOP)
13771                                 continue;
13772
13773                         /*
13774                          * We handle LDADDR here as well, since it can only be decomposed
13775                          * when variable addresses are known.
13776                          */
13777                         if (ins->opcode == OP_LDADDR) {
13778                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13779
13780                                 if (var->opcode == OP_VTARG_ADDR) {
13781                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13782                                         MonoInst *vtaddr = var->inst_left;
13783                                         if (vtaddr->opcode == OP_REGVAR) {
13784                                                 ins->opcode = OP_MOVE;
13785                                                 ins->sreg1 = vtaddr->dreg;
13786                                         }
13787                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13788                                                 ins->opcode = OP_LOAD_MEMBASE;
13789                                                 ins->inst_basereg = vtaddr->inst_basereg;
13790                                                 ins->inst_offset = vtaddr->inst_offset;
13791                                         } else
13792                                                 NOT_IMPLEMENTED;
13793                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13794                                         /* gsharedvt arg passed by ref */
13795                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13796
13797                                         ins->opcode = OP_LOAD_MEMBASE;
13798                                         ins->inst_basereg = var->inst_basereg;
13799                                         ins->inst_offset = var->inst_offset;
13800                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13801                                         MonoInst *load, *load2, *load3;
13802                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13803                                         int reg1, reg2, reg3;
13804                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13805                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13806
13807                                         /*
13808                                          * gsharedvt local.
13809                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13810                                          */
13811
13812                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13813
13814                                         g_assert (info_var);
13815                                         g_assert (locals_var);
13816
13817                                         /* Mark the instruction used to compute the locals var as used */
13818                                         cfg->gsharedvt_locals_var_ins = NULL;
13819
13820                                         /* Load the offset */
13821                                         if (info_var->opcode == OP_REGOFFSET) {
13822                                                 reg1 = alloc_ireg (cfg);
13823                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13824                                         } else if (info_var->opcode == OP_REGVAR) {
13825                                                 load = NULL;
13826                                                 reg1 = info_var->dreg;
13827                                         } else {
13828                                                 g_assert_not_reached ();
13829                                         }
13830                                         reg2 = alloc_ireg (cfg);
13831                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13832                                         /* Load the locals area address */
13833                                         reg3 = alloc_ireg (cfg);
13834                                         if (locals_var->opcode == OP_REGOFFSET) {
13835                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13836                                         } else if (locals_var->opcode == OP_REGVAR) {
13837                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13838                                         } else {
13839                                                 g_assert_not_reached ();
13840                                         }
13841                                         /* Compute the address */
13842                                         ins->opcode = OP_PADD;
13843                                         ins->sreg1 = reg3;
13844                                         ins->sreg2 = reg2;
13845
13846                                         mono_bblock_insert_before_ins (bb, ins, load3);
13847                                         mono_bblock_insert_before_ins (bb, load3, load2);
13848                                         if (load)
13849                                                 mono_bblock_insert_before_ins (bb, load2, load);
13850                                 } else {
13851                                         g_assert (var->opcode == OP_REGOFFSET);
13852
13853                                         ins->opcode = OP_ADD_IMM;
13854                                         ins->sreg1 = var->inst_basereg;
13855                                         ins->inst_imm = var->inst_offset;
13856                                 }
13857
13858                                 *need_local_opts = TRUE;
13859                                 spec = INS_INFO (ins->opcode);
13860                         }
13861
13862                         if (ins->opcode < MONO_CEE_LAST) {
13863                                 mono_print_ins (ins);
13864                                 g_assert_not_reached ();
13865                         }
13866
13867                         /*
13868                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13869                          * src register.
13870                          * FIXME:
13871                          */
13872                         if (MONO_IS_STORE_MEMBASE (ins)) {
13873                                 tmp_reg = ins->dreg;
13874                                 ins->dreg = ins->sreg2;
13875                                 ins->sreg2 = tmp_reg;
13876                                 store = TRUE;
13877
13878                                 spec2 [MONO_INST_DEST] = ' ';
13879                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13880                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13881                                 spec2 [MONO_INST_SRC3] = ' ';
13882                                 spec = spec2;
13883                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13884                                 g_assert_not_reached ();
13885                         else
13886                                 store = FALSE;
13887                         no_lvreg = FALSE;
13888
13889                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13890                                 printf ("\t %.3s %d", spec, ins->dreg);
13891                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13892                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13893                                         printf (" %d", sregs [srcindex]);
13894                                 printf ("\n");
13895                         }
13896
13897                         /***************/
13898                         /*    DREG     */
13899                         /***************/
13900                         regtype = spec [MONO_INST_DEST];
13901                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13902                         prev_dreg = -1;
13903
13904                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13905                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13906                                 MonoInst *store_ins;
13907                                 int store_opcode;
13908                                 MonoInst *def_ins = ins;
13909                                 int dreg = ins->dreg; /* The original vreg */
13910
13911                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13912
13913                                 if (var->opcode == OP_REGVAR) {
13914                                         ins->dreg = var->dreg;
13915                                 } 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)) {
13916                                         /*
13917                                          * Instead of emitting a load+store, use a _membase opcode.
13918                                          */
13919                                         g_assert (var->opcode == OP_REGOFFSET);
13920                                         if (ins->opcode == OP_MOVE) {
13921                                                 NULLIFY_INS (ins);
13922                                                 def_ins = NULL;
13923                                         } else {
13924                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13925                                                 ins->inst_basereg = var->inst_basereg;
13926                                                 ins->inst_offset = var->inst_offset;
13927                                                 ins->dreg = -1;
13928                                         }
13929                                         spec = INS_INFO (ins->opcode);
13930                                 } else {
13931                                         guint32 lvreg;
13932
13933                                         g_assert (var->opcode == OP_REGOFFSET);
13934
13935                                         prev_dreg = ins->dreg;
13936
13937                                         /* Invalidate any previous lvreg for this vreg */
13938                                         vreg_to_lvreg [ins->dreg] = 0;
13939
13940                                         lvreg = 0;
13941
13942                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13943                                                 regtype = 'l';
13944                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13945                                         }
13946
13947                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13948
13949 #if SIZEOF_REGISTER != 8
13950                                         if (regtype == 'l') {
13951                                                 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));
13952                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13953                                                 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));
13954                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13955                                                 def_ins = store_ins;
13956                                         }
13957                                         else
13958 #endif
13959                                         {
13960                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13961
13962                                                 /* Try to fuse the store into the instruction itself */
13963                                                 /* FIXME: Add more instructions */
13964                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13965                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13966                                                         ins->inst_imm = ins->inst_c0;
13967                                                         ins->inst_destbasereg = var->inst_basereg;
13968                                                         ins->inst_offset = var->inst_offset;
13969                                                         spec = INS_INFO (ins->opcode);
13970                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13971                                                         ins->opcode = store_opcode;
13972                                                         ins->inst_destbasereg = var->inst_basereg;
13973                                                         ins->inst_offset = var->inst_offset;
13974
13975                                                         no_lvreg = TRUE;
13976
13977                                                         tmp_reg = ins->dreg;
13978                                                         ins->dreg = ins->sreg2;
13979                                                         ins->sreg2 = tmp_reg;
13980                                                         store = TRUE;
13981
13982                                                         spec2 [MONO_INST_DEST] = ' ';
13983                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13984                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13985                                                         spec2 [MONO_INST_SRC3] = ' ';
13986                                                         spec = spec2;
13987                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13988                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13989                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13990                                                         ins->dreg = -1;
13991                                                         ins->inst_basereg = var->inst_basereg;
13992                                                         ins->inst_offset = var->inst_offset;
13993                                                         spec = INS_INFO (ins->opcode);
13994                                                 } else {
13995                                                         /* printf ("INS: "); mono_print_ins (ins); */
13996                                                         /* Create a store instruction */
13997                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13998
13999                                                         /* Insert it after the instruction */
14000                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14001
14002                                                         def_ins = store_ins;
14003
14004                                                         /*
14005                                                          * We can't assign ins->dreg to var->dreg here, since the
14006                                                          * sregs could use it. So set a flag, and do it after
14007                                                          * the sregs.
14008                                                          */
14009                                                         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)))
14010                                                                 dest_has_lvreg = TRUE;
14011                                                 }
14012                                         }
14013                                 }
14014
14015                                 if (def_ins && !live_range_start [dreg]) {
14016                                         live_range_start [dreg] = def_ins;
14017                                         live_range_start_bb [dreg] = bb;
14018                                 }
14019
14020                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14021                                         MonoInst *tmp;
14022
14023                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14024                                         tmp->inst_c1 = dreg;
14025                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14026                                 }
14027                         }
14028
14029                         /************/
14030                         /*  SREGS   */
14031                         /************/
14032                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14033                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14034                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14035                                 sreg = sregs [srcindex];
14036
14037                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14038                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14039                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14040                                         MonoInst *use_ins = ins;
14041                                         MonoInst *load_ins;
14042                                         guint32 load_opcode;
14043
14044                                         if (var->opcode == OP_REGVAR) {
14045                                                 sregs [srcindex] = var->dreg;
14046                                                 //mono_inst_set_src_registers (ins, sregs);
14047                                                 live_range_end [sreg] = use_ins;
14048                                                 live_range_end_bb [sreg] = bb;
14049
14050                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14051                                                         MonoInst *tmp;
14052
14053                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14054                                                         /* var->dreg is a hreg */
14055                                                         tmp->inst_c1 = sreg;
14056                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14057                                                 }
14058
14059                                                 continue;
14060                                         }
14061
14062                                         g_assert (var->opcode == OP_REGOFFSET);
14063
14064                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14065
14066                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14067
14068                                         if (vreg_to_lvreg [sreg]) {
14069                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14070
14071                                                 /* The variable is already loaded to an lvreg */
14072                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14073                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14074                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14075                                                 //mono_inst_set_src_registers (ins, sregs);
14076                                                 continue;
14077                                         }
14078
14079                                         /* Try to fuse the load into the instruction */
14080                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14081                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14082                                                 sregs [0] = var->inst_basereg;
14083                                                 //mono_inst_set_src_registers (ins, sregs);
14084                                                 ins->inst_offset = var->inst_offset;
14085                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14086                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14087                                                 sregs [1] = var->inst_basereg;
14088                                                 //mono_inst_set_src_registers (ins, sregs);
14089                                                 ins->inst_offset = var->inst_offset;
14090                                         } else {
14091                                                 if (MONO_IS_REAL_MOVE (ins)) {
14092                                                         ins->opcode = OP_NOP;
14093                                                         sreg = ins->dreg;
14094                                                 } else {
14095                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14096
14097                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14098
14099                                                         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) {
14100                                                                 if (var->dreg == prev_dreg) {
14101                                                                         /*
14102                                                                          * sreg refers to the value loaded by the load
14103                                                                          * emitted below, but we need to use ins->dreg
14104                                                                          * since it refers to the store emitted earlier.
14105                                                                          */
14106                                                                         sreg = ins->dreg;
14107                                                                 }
14108                                                                 g_assert (sreg != -1);
14109                                                                 vreg_to_lvreg [var->dreg] = sreg;
14110                                                                 if (lvregs_len >= lvregs_size) {
14111                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14112                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14113                                                                         lvregs = new_lvregs;
14114                                                                         lvregs_size *= 2;
14115                                                                 }
14116                                                                 lvregs [lvregs_len ++] = var->dreg;
14117                                                         }
14118                                                 }
14119
14120                                                 sregs [srcindex] = sreg;
14121                                                 //mono_inst_set_src_registers (ins, sregs);
14122
14123 #if SIZEOF_REGISTER != 8
14124                                                 if (regtype == 'l') {
14125                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14126                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14127                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14128                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14129                                                         use_ins = load_ins;
14130                                                 }
14131                                                 else
14132 #endif
14133                                                 {
14134 #if SIZEOF_REGISTER == 4
14135                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14136 #endif
14137                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14138                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14139                                                         use_ins = load_ins;
14140                                                 }
14141                                         }
14142
14143                                         if (var->dreg < orig_next_vreg) {
14144                                                 live_range_end [var->dreg] = use_ins;
14145                                                 live_range_end_bb [var->dreg] = bb;
14146                                         }
14147
14148                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14149                                                 MonoInst *tmp;
14150
14151                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14152                                                 tmp->inst_c1 = var->dreg;
14153                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14154                                         }
14155                                 }
14156                         }
14157                         mono_inst_set_src_registers (ins, sregs);
14158
14159                         if (dest_has_lvreg) {
14160                                 g_assert (ins->dreg != -1);
14161                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14162                                 if (lvregs_len >= lvregs_size) {
14163                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14164                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14165                                         lvregs = new_lvregs;
14166                                         lvregs_size *= 2;
14167                                 }
14168                                 lvregs [lvregs_len ++] = prev_dreg;
14169                                 dest_has_lvreg = FALSE;
14170                         }
14171
14172                         if (store) {
14173                                 tmp_reg = ins->dreg;
14174                                 ins->dreg = ins->sreg2;
14175                                 ins->sreg2 = tmp_reg;
14176                         }
14177
14178                         if (MONO_IS_CALL (ins)) {
14179                                 /* Clear vreg_to_lvreg array */
14180                                 for (i = 0; i < lvregs_len; i++)
14181                                         vreg_to_lvreg [lvregs [i]] = 0;
14182                                 lvregs_len = 0;
14183                         } else if (ins->opcode == OP_NOP) {
14184                                 ins->dreg = -1;
14185                                 MONO_INST_NULLIFY_SREGS (ins);
14186                         }
14187
14188                         if (cfg->verbose_level > 2)
14189                                 mono_print_ins_index (1, ins);
14190                 }
14191
14192                 /* Extend the live range based on the liveness info */
14193                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14194                         for (i = 0; i < cfg->num_varinfo; i ++) {
14195                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14196
14197                                 if (vreg_is_volatile (cfg, vi->vreg))
14198                                         /* The liveness info is incomplete */
14199                                         continue;
14200
14201                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14202                                         /* Live from at least the first ins of this bb */
14203                                         live_range_start [vi->vreg] = bb->code;
14204                                         live_range_start_bb [vi->vreg] = bb;
14205                                 }
14206
14207                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14208                                         /* Live at least until the last ins of this bb */
14209                                         live_range_end [vi->vreg] = bb->last_ins;
14210                                         live_range_end_bb [vi->vreg] = bb;
14211                                 }
14212                         }
14213                 }
14214         }
14215
14216         /*
14217          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14218          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14219          */
14220         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14221                 for (i = 0; i < cfg->num_varinfo; ++i) {
14222                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14223                         MonoInst *ins;
14224
14225                         if (live_range_start [vreg]) {
14226                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14227                                 ins->inst_c0 = i;
14228                                 ins->inst_c1 = vreg;
14229                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14230                         }
14231                         if (live_range_end [vreg]) {
14232                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14233                                 ins->inst_c0 = i;
14234                                 ins->inst_c1 = vreg;
14235                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14236                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14237                                 else
14238                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14239                         }
14240                 }
14241         }
14242
14243         if (cfg->gsharedvt_locals_var_ins) {
14244                 /* Nullify if unused */
14245                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14246                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14247         }
14248
14249         g_free (live_range_start);
14250         g_free (live_range_end);
14251         g_free (live_range_start_bb);
14252         g_free (live_range_end_bb);
14253 }
14254
14255
14256 /**
14257  * FIXME:
14258  * - use 'iadd' instead of 'int_add'
14259  * - handling ovf opcodes: decompose in method_to_ir.
14260  * - unify iregs/fregs
14261  *   -> partly done, the missing parts are:
14262  *   - a more complete unification would involve unifying the hregs as well, so
14263  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14264  *     would no longer map to the machine hregs, so the code generators would need to
14265  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14266  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14267  *     fp/non-fp branches speeds it up by about 15%.
14268  * - use sext/zext opcodes instead of shifts
14269  * - add OP_ICALL
14270  * - get rid of TEMPLOADs if possible and use vregs instead
14271  * - clean up usage of OP_P/OP_ opcodes
14272  * - cleanup usage of DUMMY_USE
14273  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14274  *   stack
14275  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14276  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14277  * - make sure handle_stack_args () is called before the branch is emitted
14278  * - when the new IR is done, get rid of all unused stuff
14279  * - COMPARE/BEQ as separate instructions or unify them ?
14280  *   - keeping them separate allows specialized compare instructions like
14281  *     compare_imm, compare_membase
14282  *   - most back ends unify fp compare+branch, fp compare+ceq
14283  * - integrate mono_save_args into inline_method
14284  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14285  * - handle long shift opts on 32 bit platforms somehow: they require
14286  *   3 sregs (2 for arg1 and 1 for arg2)
14287  * - make byref a 'normal' type.
14288  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14289  *   variable if needed.
14290  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14291  *   like inline_method.
14292  * - remove inlining restrictions
14293  * - fix LNEG and enable cfold of INEG
14294  * - generalize x86 optimizations like ldelema as a peephole optimization
14295  * - add store_mem_imm for amd64
14296  * - optimize the loading of the interruption flag in the managed->native wrappers
14297  * - avoid special handling of OP_NOP in passes
14298  * - move code inserting instructions into one function/macro.
14299  * - try a coalescing phase after liveness analysis
14300  * - add float -> vreg conversion + local optimizations on !x86
14301  * - figure out how to handle decomposed branches during optimizations, ie.
14302  *   compare+branch, op_jump_table+op_br etc.
14303  * - promote RuntimeXHandles to vregs
14304  * - vtype cleanups:
14305  *   - add a NEW_VARLOADA_VREG macro
14306  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14307  *   accessing vtype fields.
14308  * - get rid of I8CONST on 64 bit platforms
14309  * - dealing with the increase in code size due to branches created during opcode
14310  *   decomposition:
14311  *   - use extended basic blocks
14312  *     - all parts of the JIT
14313  *     - handle_global_vregs () && local regalloc
14314  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14315  * - sources of increase in code size:
14316  *   - vtypes
14317  *   - long compares
14318  *   - isinst and castclass
14319  *   - lvregs not allocated to global registers even if used multiple times
14320  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14321  *   meaningful.
14322  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14323  * - add all micro optimizations from the old JIT
14324  * - put tree optimizations into the deadce pass
14325  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14326  *   specific function.
14327  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14328  *   fcompare + branchCC.
14329  * - create a helper function for allocating a stack slot, taking into account
14330  *   MONO_CFG_HAS_SPILLUP.
14331  * - merge r68207.
14332  * - optimize mono_regstate2_alloc_int/float.
14333  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14334  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14335  *   parts of the tree could be separated by other instructions, killing the tree
14336  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14337  *   instructions if the result of the load is used multiple times ?
14338  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14339  * - LAST MERGE: 108395.
14340  * - when returning vtypes in registers, generate IR and append it to the end of the
14341  *   last bb instead of doing it in the epilog.
14342  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14343  */
14344
14345 /*
14346
14347 NOTES
14348 -----
14349
14350 - When to decompose opcodes:
14351   - earlier: this makes some optimizations hard to implement, since the low level IR
14352   no longer contains the neccessary information. But it is easier to do.
14353   - later: harder to implement, enables more optimizations.
14354 - Branches inside bblocks:
14355   - created when decomposing complex opcodes.
14356     - branches to another bblock: harmless, but not tracked by the branch
14357       optimizations, so need to branch to a label at the start of the bblock.
14358     - branches to inside the same bblock: very problematic, trips up the local
14359       reg allocator. Can be fixed by spitting the current bblock, but that is a
14360       complex operation, since some local vregs can become global vregs etc.
14361 - Local/global vregs:
14362   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14363     local register allocator.
14364   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14365     structure, created by mono_create_var (). Assigned to hregs or the stack by
14366     the global register allocator.
14367 - When to do optimizations like alu->alu_imm:
14368   - earlier -> saves work later on since the IR will be smaller/simpler
14369   - later -> can work on more instructions
14370 - Handling of valuetypes:
14371   - When a vtype is pushed on the stack, a new temporary is created, an
14372     instruction computing its address (LDADDR) is emitted and pushed on
14373     the stack. Need to optimize cases when the vtype is used immediately as in
14374     argument passing, stloc etc.
14375 - Instead of the to_end stuff in the old JIT, simply call the function handling
14376   the values on the stack before emitting the last instruction of the bb.
14377 */
14378
14379 #else /* !DISABLE_JIT */
14380
14381 void
14382 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
14383 {
14384 }
14385
14386 #endif /* !DISABLE_JIT */