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                 case STACK_OBJ:
1074 #if SIZEOF_VOID_P == 8
1075                         ins->opcode = OP_LCONV_TO_U;
1076 #else
1077                         ins->opcode = OP_MOVE;
1078 #endif
1079                         break;
1080                 case STACK_I8:
1081                         ins->opcode = OP_LCONV_TO_U;
1082                         break;
1083                 case STACK_R8:
1084                         ins->opcode = OP_FCONV_TO_U;
1085                         break;
1086                 }
1087                 break;
1088         case CEE_CONV_I8:
1089         case CEE_CONV_U8:
1090                 ins->type = STACK_I8;
1091                 ins->opcode += unops_op_map [src1->type];
1092                 break;
1093         case CEE_CONV_OVF_I8:
1094         case CEE_CONV_OVF_U8:
1095                 ins->type = STACK_I8;
1096                 ins->opcode += ovf3ops_op_map [src1->type];
1097                 break;
1098         case CEE_CONV_OVF_U8_UN:
1099         case CEE_CONV_OVF_I8_UN:
1100                 ins->type = STACK_I8;
1101                 ins->opcode += ovf2ops_op_map [src1->type];
1102                 break;
1103         case CEE_CONV_R4:
1104                 ins->type = cfg->r4_stack_type;
1105                 ins->opcode += unops_op_map [src1->type];
1106                 break;
1107         case CEE_CONV_R8:
1108                 ins->type = STACK_R8;
1109                 ins->opcode += unops_op_map [src1->type];
1110                 break;
1111         case OP_CKFINITE:
1112                 ins->type = STACK_R8;
1113                 break;
1114         case CEE_CONV_U2:
1115         case CEE_CONV_U1:
1116                 ins->type = STACK_I4;
1117                 ins->opcode += ovfops_op_map [src1->type];
1118                 break;
1119         case CEE_CONV_I:
1120         case CEE_CONV_OVF_I:
1121         case CEE_CONV_OVF_U:
1122                 ins->type = STACK_PTR;
1123                 ins->opcode += ovfops_op_map [src1->type];
1124                 break;
1125         case CEE_ADD_OVF:
1126         case CEE_ADD_OVF_UN:
1127         case CEE_MUL_OVF:
1128         case CEE_MUL_OVF_UN:
1129         case CEE_SUB_OVF:
1130         case CEE_SUB_OVF_UN:
1131                 ins->type = bin_num_table [src1->type] [src2->type];
1132                 ins->opcode += ovfops_op_map [src1->type];
1133                 if (ins->type == STACK_R8)
1134                         ins->type = STACK_INV;
1135                 break;
1136         case OP_LOAD_MEMBASE:
1137                 ins->type = STACK_PTR;
1138                 break;
1139         case OP_LOADI1_MEMBASE:
1140         case OP_LOADU1_MEMBASE:
1141         case OP_LOADI2_MEMBASE:
1142         case OP_LOADU2_MEMBASE:
1143         case OP_LOADI4_MEMBASE:
1144         case OP_LOADU4_MEMBASE:
1145                 ins->type = STACK_PTR;
1146                 break;
1147         case OP_LOADI8_MEMBASE:
1148                 ins->type = STACK_I8;
1149                 break;
1150         case OP_LOADR4_MEMBASE:
1151                 ins->type = cfg->r4_stack_type;
1152                 break;
1153         case OP_LOADR8_MEMBASE:
1154                 ins->type = STACK_R8;
1155                 break;
1156         default:
1157                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1158                 break;
1159         }
1160
1161         if (ins->type == STACK_MP)
1162                 ins->klass = mono_defaults.object_class;
1163 }
1164
1165 static MonoClass*
1166 ldind_to_type (int op)
1167 {
1168         switch (op) {
1169         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1170         case CEE_LDIND_U1: return mono_defaults.byte_class;
1171         case CEE_LDIND_I2: return mono_defaults.int16_class;
1172         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1173         case CEE_LDIND_I4: return mono_defaults.int32_class;
1174         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1175         case CEE_LDIND_I8: return mono_defaults.int64_class;
1176         case CEE_LDIND_I: return mono_defaults.int_class;
1177         case CEE_LDIND_R4: return mono_defaults.single_class;
1178         case CEE_LDIND_R8: return mono_defaults.double_class;
1179         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1180         default: g_error ("Unknown ldind type %d", op);
1181         }
1182 }
1183
1184 #if 0
1185
1186 static const char
1187 param_table [STACK_MAX] [STACK_MAX] = {
1188         {0},
1189 };
1190
1191 static int
1192 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1193 {
1194         int i;
1195
1196         if (sig->hasthis) {
1197                 switch (args->type) {
1198                 case STACK_I4:
1199                 case STACK_I8:
1200                 case STACK_R8:
1201                 case STACK_VTYPE:
1202                 case STACK_INV:
1203                         return 0;
1204                 }
1205                 args++;
1206         }
1207         for (i = 0; i < sig->param_count; ++i) {
1208                 switch (args [i].type) {
1209                 case STACK_INV:
1210                         return 0;
1211                 case STACK_MP:
1212                         if (!sig->params [i]->byref)
1213                                 return 0;
1214                         continue;
1215                 case STACK_OBJ:
1216                         if (sig->params [i]->byref)
1217                                 return 0;
1218                         switch (sig->params [i]->type) {
1219                         case MONO_TYPE_CLASS:
1220                         case MONO_TYPE_STRING:
1221                         case MONO_TYPE_OBJECT:
1222                         case MONO_TYPE_SZARRAY:
1223                         case MONO_TYPE_ARRAY:
1224                                 break;
1225                         default:
1226                                 return 0;
1227                         }
1228                         continue;
1229                 case STACK_R8:
1230                         if (sig->params [i]->byref)
1231                                 return 0;
1232                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1233                                 return 0;
1234                         continue;
1235                 case STACK_PTR:
1236                 case STACK_I4:
1237                 case STACK_I8:
1238                 case STACK_VTYPE:
1239                         break;
1240                 }
1241                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1242                         return 0;*/
1243         }
1244         return 1;
1245 }
1246 #endif
1247
1248 /*
1249  * When we need a pointer to the current domain many times in a method, we
1250  * call mono_domain_get() once and we store the result in a local variable.
1251  * This function returns the variable that represents the MonoDomain*.
1252  */
1253 inline static MonoInst *
1254 mono_get_domainvar (MonoCompile *cfg)
1255 {
1256         if (!cfg->domainvar)
1257                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1258         return cfg->domainvar;
1259 }
1260
1261 /*
1262  * The got_var contains the address of the Global Offset Table when AOT
1263  * compiling.
1264  */
1265 MonoInst *
1266 mono_get_got_var (MonoCompile *cfg)
1267 {
1268         if (!cfg->compile_aot || !cfg->backend->need_got_var || cfg->llvm_only)
1269                 return NULL;
1270         if (!cfg->got_var) {
1271                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1272         }
1273         return cfg->got_var;
1274 }
1275
1276 static void
1277 mono_create_rgctx_var (MonoCompile *cfg)
1278 {
1279         if (!cfg->rgctx_var) {
1280                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1281                 /* force the var to be stack allocated */
1282                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1283         }
1284 }
1285
1286 static MonoInst *
1287 mono_get_vtable_var (MonoCompile *cfg)
1288 {
1289         g_assert (cfg->gshared);
1290
1291         mono_create_rgctx_var (cfg);
1292
1293         return cfg->rgctx_var;
1294 }
1295
1296 static MonoType*
1297 type_from_stack_type (MonoInst *ins) {
1298         switch (ins->type) {
1299         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1300         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1301         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1302         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1303         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1304         case STACK_MP:
1305                 return &ins->klass->this_arg;
1306         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1307         case STACK_VTYPE: return &ins->klass->byval_arg;
1308         default:
1309                 g_error ("stack type %d to monotype not handled\n", ins->type);
1310         }
1311         return NULL;
1312 }
1313
1314 static G_GNUC_UNUSED int
1315 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1316 {
1317         t = mono_type_get_underlying_type (t);
1318         switch (t->type) {
1319         case MONO_TYPE_I1:
1320         case MONO_TYPE_U1:
1321         case MONO_TYPE_I2:
1322         case MONO_TYPE_U2:
1323         case MONO_TYPE_I4:
1324         case MONO_TYPE_U4:
1325                 return STACK_I4;
1326         case MONO_TYPE_I:
1327         case MONO_TYPE_U:
1328         case MONO_TYPE_PTR:
1329         case MONO_TYPE_FNPTR:
1330                 return STACK_PTR;
1331         case MONO_TYPE_CLASS:
1332         case MONO_TYPE_STRING:
1333         case MONO_TYPE_OBJECT:
1334         case MONO_TYPE_SZARRAY:
1335         case MONO_TYPE_ARRAY:
1336                 return STACK_OBJ;
1337         case MONO_TYPE_I8:
1338         case MONO_TYPE_U8:
1339                 return STACK_I8;
1340         case MONO_TYPE_R4:
1341                 return cfg->r4_stack_type;
1342         case MONO_TYPE_R8:
1343                 return STACK_R8;
1344         case MONO_TYPE_VALUETYPE:
1345         case MONO_TYPE_TYPEDBYREF:
1346                 return STACK_VTYPE;
1347         case MONO_TYPE_GENERICINST:
1348                 if (mono_type_generic_inst_is_valuetype (t))
1349                         return STACK_VTYPE;
1350                 else
1351                         return STACK_OBJ;
1352                 break;
1353         default:
1354                 g_assert_not_reached ();
1355         }
1356
1357         return -1;
1358 }
1359
1360 static MonoClass*
1361 array_access_to_klass (int opcode)
1362 {
1363         switch (opcode) {
1364         case CEE_LDELEM_U1:
1365                 return mono_defaults.byte_class;
1366         case CEE_LDELEM_U2:
1367                 return mono_defaults.uint16_class;
1368         case CEE_LDELEM_I:
1369         case CEE_STELEM_I:
1370                 return mono_defaults.int_class;
1371         case CEE_LDELEM_I1:
1372         case CEE_STELEM_I1:
1373                 return mono_defaults.sbyte_class;
1374         case CEE_LDELEM_I2:
1375         case CEE_STELEM_I2:
1376                 return mono_defaults.int16_class;
1377         case CEE_LDELEM_I4:
1378         case CEE_STELEM_I4:
1379                 return mono_defaults.int32_class;
1380         case CEE_LDELEM_U4:
1381                 return mono_defaults.uint32_class;
1382         case CEE_LDELEM_I8:
1383         case CEE_STELEM_I8:
1384                 return mono_defaults.int64_class;
1385         case CEE_LDELEM_R4:
1386         case CEE_STELEM_R4:
1387                 return mono_defaults.single_class;
1388         case CEE_LDELEM_R8:
1389         case CEE_STELEM_R8:
1390                 return mono_defaults.double_class;
1391         case CEE_LDELEM_REF:
1392         case CEE_STELEM_REF:
1393                 return mono_defaults.object_class;
1394         default:
1395                 g_assert_not_reached ();
1396         }
1397         return NULL;
1398 }
1399
1400 /*
1401  * We try to share variables when possible
1402  */
1403 static MonoInst *
1404 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1405 {
1406         MonoInst *res;
1407         int pos, vnum;
1408
1409         /* inlining can result in deeper stacks */
1410         if (slot >= cfg->header->max_stack)
1411                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1412
1413         pos = ins->type - 1 + slot * STACK_MAX;
1414
1415         switch (ins->type) {
1416         case STACK_I4:
1417         case STACK_I8:
1418         case STACK_R8:
1419         case STACK_PTR:
1420         case STACK_MP:
1421         case STACK_OBJ:
1422                 if ((vnum = cfg->intvars [pos]))
1423                         return cfg->varinfo [vnum];
1424                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1425                 cfg->intvars [pos] = res->inst_c0;
1426                 break;
1427         default:
1428                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1429         }
1430         return res;
1431 }
1432
1433 static void
1434 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1435 {
1436         /*
1437          * Don't use this if a generic_context is set, since that means AOT can't
1438          * look up the method using just the image+token.
1439          * table == 0 means this is a reference made from a wrapper.
1440          */
1441         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1442                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1443                 jump_info_token->image = image;
1444                 jump_info_token->token = token;
1445                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1446         }
1447 }
1448
1449 /*
1450  * This function is called to handle items that are left on the evaluation stack
1451  * at basic block boundaries. What happens is that we save the values to local variables
1452  * and we reload them later when first entering the target basic block (with the
1453  * handle_loaded_temps () function).
1454  * A single joint point will use the same variables (stored in the array bb->out_stack or
1455  * bb->in_stack, if the basic block is before or after the joint point).
1456  *
1457  * This function needs to be called _before_ emitting the last instruction of
1458  * the bb (i.e. before emitting a branch).
1459  * If the stack merge fails at a join point, cfg->unverifiable is set.
1460  */
1461 static void
1462 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1463 {
1464         int i, bindex;
1465         MonoBasicBlock *bb = cfg->cbb;
1466         MonoBasicBlock *outb;
1467         MonoInst *inst, **locals;
1468         gboolean found;
1469
1470         if (!count)
1471                 return;
1472         if (cfg->verbose_level > 3)
1473                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1474         if (!bb->out_scount) {
1475                 bb->out_scount = count;
1476                 //printf ("bblock %d has out:", bb->block_num);
1477                 found = FALSE;
1478                 for (i = 0; i < bb->out_count; ++i) {
1479                         outb = bb->out_bb [i];
1480                         /* exception handlers are linked, but they should not be considered for stack args */
1481                         if (outb->flags & BB_EXCEPTION_HANDLER)
1482                                 continue;
1483                         //printf (" %d", outb->block_num);
1484                         if (outb->in_stack) {
1485                                 found = TRUE;
1486                                 bb->out_stack = outb->in_stack;
1487                                 break;
1488                         }
1489                 }
1490                 //printf ("\n");
1491                 if (!found) {
1492                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1493                         for (i = 0; i < count; ++i) {
1494                                 /*
1495                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1496                                  * stack slot and if they are of the same type.
1497                                  * This won't cause conflicts since if 'local' is used to
1498                                  * store one of the values in the in_stack of a bblock, then
1499                                  * the same variable will be used for the same outgoing stack
1500                                  * slot as well.
1501                                  * This doesn't work when inlining methods, since the bblocks
1502                                  * in the inlined methods do not inherit their in_stack from
1503                                  * the bblock they are inlined to. See bug #58863 for an
1504                                  * example.
1505                                  */
1506                                 if (cfg->inlined_method)
1507                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1508                                 else
1509                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1510                         }
1511                 }
1512         }
1513
1514         for (i = 0; i < bb->out_count; ++i) {
1515                 outb = bb->out_bb [i];
1516                 /* exception handlers are linked, but they should not be considered for stack args */
1517                 if (outb->flags & BB_EXCEPTION_HANDLER)
1518                         continue;
1519                 if (outb->in_scount) {
1520                         if (outb->in_scount != bb->out_scount) {
1521                                 cfg->unverifiable = TRUE;
1522                                 return;
1523                         }
1524                         continue; /* check they are the same locals */
1525                 }
1526                 outb->in_scount = count;
1527                 outb->in_stack = bb->out_stack;
1528         }
1529
1530         locals = bb->out_stack;
1531         cfg->cbb = bb;
1532         for (i = 0; i < count; ++i) {
1533                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1534                 inst->cil_code = sp [i]->cil_code;
1535                 sp [i] = locals [i];
1536                 if (cfg->verbose_level > 3)
1537                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1538         }
1539
1540         /*
1541          * It is possible that the out bblocks already have in_stack assigned, and
1542          * the in_stacks differ. In this case, we will store to all the different
1543          * in_stacks.
1544          */
1545
1546         found = TRUE;
1547         bindex = 0;
1548         while (found) {
1549                 /* Find a bblock which has a different in_stack */
1550                 found = FALSE;
1551                 while (bindex < bb->out_count) {
1552                         outb = bb->out_bb [bindex];
1553                         /* exception handlers are linked, but they should not be considered for stack args */
1554                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1555                                 bindex++;
1556                                 continue;
1557                         }
1558                         if (outb->in_stack != locals) {
1559                                 for (i = 0; i < count; ++i) {
1560                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1561                                         inst->cil_code = sp [i]->cil_code;
1562                                         sp [i] = locals [i];
1563                                         if (cfg->verbose_level > 3)
1564                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1565                                 }
1566                                 locals = outb->in_stack;
1567                                 found = TRUE;
1568                                 break;
1569                         }
1570                         bindex ++;
1571                 }
1572         }
1573 }
1574
1575 MonoInst*
1576 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1577 {
1578         MonoInst *ins;
1579
1580         if (cfg->compile_aot) {
1581                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1582         } else {
1583                 MonoJumpInfo ji;
1584                 gpointer target;
1585                 MonoError error;
1586
1587                 ji.type = patch_type;
1588                 ji.data.target = data;
1589                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1590                 mono_error_assert_ok (&error);
1591
1592                 EMIT_NEW_PCONST (cfg, ins, target);
1593         }
1594         return ins;
1595 }
1596
1597 static MonoInst*
1598 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1599 {
1600         int tls_offset = mono_tls_get_tls_offset (key);
1601
1602         if (cfg->compile_aot)
1603                 return NULL;
1604
1605         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1606                 MonoInst *ins;
1607                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1608                 ins->dreg = mono_alloc_preg (cfg);
1609                 ins->inst_offset = tls_offset;
1610                 return ins;
1611         }
1612         return NULL;
1613 }
1614
1615 static MonoInst*
1616 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1617 {
1618         int tls_offset = mono_tls_get_tls_offset (key);
1619
1620         if (cfg->compile_aot)
1621                 return NULL;
1622
1623         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1624                 MonoInst *ins;
1625                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1626                 ins->sreg1 = value->dreg;
1627                 ins->inst_offset = tls_offset;
1628                 return ins;
1629         }
1630         return NULL;
1631 }
1632
1633
1634 MonoInst*
1635 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1636 {
1637         MonoInst *fast_tls = NULL;
1638
1639         if (!mini_get_debug_options ()->use_fallback_tls)
1640                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1641
1642         if (fast_tls) {
1643                 MONO_ADD_INS (cfg->cbb, fast_tls);
1644                 return fast_tls;
1645         }
1646
1647         if (cfg->compile_aot) {
1648                 MonoInst *addr;
1649                 /*
1650                  * tls getters are critical pieces of code and we don't want to resolve them
1651                  * through the standard plt/tramp mechanism since we might expose ourselves
1652                  * to crashes and infinite recursions.
1653                  */
1654                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1655                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1656         } else {
1657                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1658                 return mono_emit_jit_icall (cfg, getter, NULL);
1659         }
1660 }
1661
1662 static MonoInst*
1663 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1664 {
1665         MonoInst *fast_tls = NULL;
1666
1667         if (!mini_get_debug_options ()->use_fallback_tls)
1668                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1669
1670         if (fast_tls) {
1671                 MONO_ADD_INS (cfg->cbb, fast_tls);
1672                 return fast_tls;
1673         }
1674
1675         if (cfg->compile_aot) {
1676                 MonoInst *addr;
1677                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1678                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1679         } else {
1680                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1681                 return mono_emit_jit_icall (cfg, setter, &value);
1682         }
1683 }
1684
1685 /*
1686  * emit_push_lmf:
1687  *
1688  *   Emit IR to push the current LMF onto the LMF stack.
1689  */
1690 static void
1691 emit_push_lmf (MonoCompile *cfg)
1692 {
1693         /*
1694          * Emit IR to push the LMF:
1695          * lmf_addr = <lmf_addr from tls>
1696          * lmf->lmf_addr = lmf_addr
1697          * lmf->prev_lmf = *lmf_addr
1698          * *lmf_addr = lmf
1699          */
1700         MonoInst *ins, *lmf_ins;
1701
1702         if (!cfg->lmf_ir)
1703                 return;
1704
1705         int lmf_reg, prev_lmf_reg;
1706         /*
1707          * Store lmf_addr in a variable, so it can be allocated to a global register.
1708          */
1709         if (!cfg->lmf_addr_var)
1710                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1711
1712 #ifdef HOST_WIN32
1713         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1714         g_assert (ins);
1715         int jit_tls_dreg = ins->dreg;
1716
1717         lmf_reg = alloc_preg (cfg);
1718         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1719 #else
1720         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1721         g_assert (lmf_ins);
1722 #endif
1723         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1724
1725         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1726         lmf_reg = ins->dreg;
1727
1728         prev_lmf_reg = alloc_preg (cfg);
1729         /* Save previous_lmf */
1730         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1731         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1732         /* Set new lmf */
1733         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1734 }
1735
1736 /*
1737  * emit_pop_lmf:
1738  *
1739  *   Emit IR to pop the current LMF from the LMF stack.
1740  */
1741 static void
1742 emit_pop_lmf (MonoCompile *cfg)
1743 {
1744         int lmf_reg, lmf_addr_reg;
1745         MonoInst *ins;
1746
1747         if (!cfg->lmf_ir)
1748                 return;
1749
1750         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1751         lmf_reg = ins->dreg;
1752
1753         int prev_lmf_reg;
1754         /*
1755          * Emit IR to pop the LMF:
1756          * *(lmf->lmf_addr) = lmf->prev_lmf
1757          */
1758         /* This could be called before emit_push_lmf () */
1759         if (!cfg->lmf_addr_var)
1760                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1761         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1762
1763         prev_lmf_reg = alloc_preg (cfg);
1764         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1765         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1766 }
1767
1768 static int
1769 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1770 {
1771 handle_enum:
1772         type = mini_get_underlying_type (type);
1773         switch (type->type) {
1774         case MONO_TYPE_VOID:
1775                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1776         case MONO_TYPE_I1:
1777         case MONO_TYPE_U1:
1778         case MONO_TYPE_I2:
1779         case MONO_TYPE_U2:
1780         case MONO_TYPE_I4:
1781         case MONO_TYPE_U4:
1782                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1783         case MONO_TYPE_I:
1784         case MONO_TYPE_U:
1785         case MONO_TYPE_PTR:
1786         case MONO_TYPE_FNPTR:
1787                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1788         case MONO_TYPE_CLASS:
1789         case MONO_TYPE_STRING:
1790         case MONO_TYPE_OBJECT:
1791         case MONO_TYPE_SZARRAY:
1792         case MONO_TYPE_ARRAY:
1793                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1794         case MONO_TYPE_I8:
1795         case MONO_TYPE_U8:
1796                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1797         case MONO_TYPE_R4:
1798                 if (cfg->r4fp)
1799                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1800                 else
1801                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1802         case MONO_TYPE_R8:
1803                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1804         case MONO_TYPE_VALUETYPE:
1805                 if (type->data.klass->enumtype) {
1806                         type = mono_class_enum_basetype (type->data.klass);
1807                         goto handle_enum;
1808                 } else
1809                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1810         case MONO_TYPE_TYPEDBYREF:
1811                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1812         case MONO_TYPE_GENERICINST:
1813                 type = &type->data.generic_class->container_class->byval_arg;
1814                 goto handle_enum;
1815         case MONO_TYPE_VAR:
1816         case MONO_TYPE_MVAR:
1817                 /* gsharedvt */
1818                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1819         default:
1820                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1821         }
1822         return -1;
1823 }
1824
1825 //XXX this ignores if t is byref
1826 #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)))))
1827
1828 /*
1829  * target_type_is_incompatible:
1830  * @cfg: MonoCompile context
1831  *
1832  * Check that the item @arg on the evaluation stack can be stored
1833  * in the target type (can be a local, or field, etc).
1834  * The cfg arg can be used to check if we need verification or just
1835  * validity checks.
1836  *
1837  * Returns: non-0 value if arg can't be stored on a target.
1838  */
1839 static int
1840 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1841 {
1842         MonoType *simple_type;
1843         MonoClass *klass;
1844
1845         if (target->byref) {
1846                 /* FIXME: check that the pointed to types match */
1847                 if (arg->type == STACK_MP) {
1848                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1849                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1850                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1851
1852                         /* if the target is native int& or same type */
1853                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1854                                 return 0;
1855
1856                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1857                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1858                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1859                                 return 0;
1860                         return 1;
1861                 }
1862                 if (arg->type == STACK_PTR)
1863                         return 0;
1864                 return 1;
1865         }
1866
1867         simple_type = mini_get_underlying_type (target);
1868         switch (simple_type->type) {
1869         case MONO_TYPE_VOID:
1870                 return 1;
1871         case MONO_TYPE_I1:
1872         case MONO_TYPE_U1:
1873         case MONO_TYPE_I2:
1874         case MONO_TYPE_U2:
1875         case MONO_TYPE_I4:
1876         case MONO_TYPE_U4:
1877                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1878                         return 1;
1879                 return 0;
1880         case MONO_TYPE_PTR:
1881                 /* STACK_MP is needed when setting pinned locals */
1882                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1883                         return 1;
1884                 return 0;
1885         case MONO_TYPE_I:
1886         case MONO_TYPE_U:
1887         case MONO_TYPE_FNPTR:
1888                 /*
1889                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1890                  * in native int. (#688008).
1891                  */
1892                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1893                         return 1;
1894                 return 0;
1895         case MONO_TYPE_CLASS:
1896         case MONO_TYPE_STRING:
1897         case MONO_TYPE_OBJECT:
1898         case MONO_TYPE_SZARRAY:
1899         case MONO_TYPE_ARRAY:
1900                 if (arg->type != STACK_OBJ)
1901                         return 1;
1902                 /* FIXME: check type compatibility */
1903                 return 0;
1904         case MONO_TYPE_I8:
1905         case MONO_TYPE_U8:
1906                 if (arg->type != STACK_I8)
1907                         return 1;
1908                 return 0;
1909         case MONO_TYPE_R4:
1910                 if (arg->type != cfg->r4_stack_type)
1911                         return 1;
1912                 return 0;
1913         case MONO_TYPE_R8:
1914                 if (arg->type != STACK_R8)
1915                         return 1;
1916                 return 0;
1917         case MONO_TYPE_VALUETYPE:
1918                 if (arg->type != STACK_VTYPE)
1919                         return 1;
1920                 klass = mono_class_from_mono_type (simple_type);
1921                 if (klass != arg->klass)
1922                         return 1;
1923                 return 0;
1924         case MONO_TYPE_TYPEDBYREF:
1925                 if (arg->type != STACK_VTYPE)
1926                         return 1;
1927                 klass = mono_class_from_mono_type (simple_type);
1928                 if (klass != arg->klass)
1929                         return 1;
1930                 return 0;
1931         case MONO_TYPE_GENERICINST:
1932                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1933                         MonoClass *target_class;
1934                         if (arg->type != STACK_VTYPE)
1935                                 return 1;
1936                         klass = mono_class_from_mono_type (simple_type);
1937                         target_class = mono_class_from_mono_type (target);
1938                         /* The second cases is needed when doing partial sharing */
1939                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1940                                 return 1;
1941                         return 0;
1942                 } else {
1943                         if (arg->type != STACK_OBJ)
1944                                 return 1;
1945                         /* FIXME: check type compatibility */
1946                         return 0;
1947                 }
1948         case MONO_TYPE_VAR:
1949         case MONO_TYPE_MVAR:
1950                 g_assert (cfg->gshared);
1951                 if (mini_type_var_is_vt (simple_type)) {
1952                         if (arg->type != STACK_VTYPE)
1953                                 return 1;
1954                 } else {
1955                         if (arg->type != STACK_OBJ)
1956                                 return 1;
1957                 }
1958                 return 0;
1959         default:
1960                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1961         }
1962         return 1;
1963 }
1964
1965 /*
1966  * Prepare arguments for passing to a function call.
1967  * Return a non-zero value if the arguments can't be passed to the given
1968  * signature.
1969  * The type checks are not yet complete and some conversions may need
1970  * casts on 32 or 64 bit architectures.
1971  *
1972  * FIXME: implement this using target_type_is_incompatible ()
1973  */
1974 static int
1975 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1976 {
1977         MonoType *simple_type;
1978         int i;
1979
1980         if (sig->hasthis) {
1981                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1982                         return 1;
1983                 args++;
1984         }
1985         for (i = 0; i < sig->param_count; ++i) {
1986                 if (sig->params [i]->byref) {
1987                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
1988                                 return 1;
1989                         continue;
1990                 }
1991                 simple_type = mini_get_underlying_type (sig->params [i]);
1992 handle_enum:
1993                 switch (simple_type->type) {
1994                 case MONO_TYPE_VOID:
1995                         return 1;
1996                         continue;
1997                 case MONO_TYPE_I1:
1998                 case MONO_TYPE_U1:
1999                 case MONO_TYPE_I2:
2000                 case MONO_TYPE_U2:
2001                 case MONO_TYPE_I4:
2002                 case MONO_TYPE_U4:
2003                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2004                                 return 1;
2005                         continue;
2006                 case MONO_TYPE_I:
2007                 case MONO_TYPE_U:
2008                 case MONO_TYPE_PTR:
2009                 case MONO_TYPE_FNPTR:
2010                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2011                                 return 1;
2012                         continue;
2013                 case MONO_TYPE_CLASS:
2014                 case MONO_TYPE_STRING:
2015                 case MONO_TYPE_OBJECT:
2016                 case MONO_TYPE_SZARRAY:
2017                 case MONO_TYPE_ARRAY:
2018                         if (args [i]->type != STACK_OBJ)
2019                                 return 1;
2020                         continue;
2021                 case MONO_TYPE_I8:
2022                 case MONO_TYPE_U8:
2023                         if (args [i]->type != STACK_I8)
2024                                 return 1;
2025                         continue;
2026                 case MONO_TYPE_R4:
2027                         if (args [i]->type != cfg->r4_stack_type)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_R8:
2031                         if (args [i]->type != STACK_R8)
2032                                 return 1;
2033                         continue;
2034                 case MONO_TYPE_VALUETYPE:
2035                         if (simple_type->data.klass->enumtype) {
2036                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2037                                 goto handle_enum;
2038                         }
2039                         if (args [i]->type != STACK_VTYPE)
2040                                 return 1;
2041                         continue;
2042                 case MONO_TYPE_TYPEDBYREF:
2043                         if (args [i]->type != STACK_VTYPE)
2044                                 return 1;
2045                         continue;
2046                 case MONO_TYPE_GENERICINST:
2047                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2048                         goto handle_enum;
2049                 case MONO_TYPE_VAR:
2050                 case MONO_TYPE_MVAR:
2051                         /* gsharedvt */
2052                         if (args [i]->type != STACK_VTYPE)
2053                                 return 1;
2054                         continue;
2055                 default:
2056                         g_error ("unknown type 0x%02x in check_call_signature",
2057                                  simple_type->type);
2058                 }
2059         }
2060         return 0;
2061 }
2062
2063 static int
2064 callvirt_to_call (int opcode)
2065 {
2066         switch (opcode) {
2067         case OP_CALL_MEMBASE:
2068                 return OP_CALL;
2069         case OP_VOIDCALL_MEMBASE:
2070                 return OP_VOIDCALL;
2071         case OP_FCALL_MEMBASE:
2072                 return OP_FCALL;
2073         case OP_RCALL_MEMBASE:
2074                 return OP_RCALL;
2075         case OP_VCALL_MEMBASE:
2076                 return OP_VCALL;
2077         case OP_LCALL_MEMBASE:
2078                 return OP_LCALL;
2079         default:
2080                 g_assert_not_reached ();
2081         }
2082
2083         return -1;
2084 }
2085
2086 static int
2087 callvirt_to_call_reg (int opcode)
2088 {
2089         switch (opcode) {
2090         case OP_CALL_MEMBASE:
2091                 return OP_CALL_REG;
2092         case OP_VOIDCALL_MEMBASE:
2093                 return OP_VOIDCALL_REG;
2094         case OP_FCALL_MEMBASE:
2095                 return OP_FCALL_REG;
2096         case OP_RCALL_MEMBASE:
2097                 return OP_RCALL_REG;
2098         case OP_VCALL_MEMBASE:
2099                 return OP_VCALL_REG;
2100         case OP_LCALL_MEMBASE:
2101                 return OP_LCALL_REG;
2102         default:
2103                 g_assert_not_reached ();
2104         }
2105
2106         return -1;
2107 }
2108
2109 /* Either METHOD or IMT_ARG needs to be set */
2110 static void
2111 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2112 {
2113         int method_reg;
2114
2115         if (COMPILE_LLVM (cfg)) {
2116                 if (imt_arg) {
2117                         method_reg = alloc_preg (cfg);
2118                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2119                 } else {
2120                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2121                         method_reg = ins->dreg;
2122                 }
2123
2124 #ifdef ENABLE_LLVM
2125                 call->imt_arg_reg = method_reg;
2126 #endif
2127                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2128                 return;
2129         }
2130
2131         if (imt_arg) {
2132                 method_reg = alloc_preg (cfg);
2133                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2134         } else {
2135                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2136                 method_reg = ins->dreg;
2137         }
2138
2139         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2140 }
2141
2142 static MonoJumpInfo *
2143 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2144 {
2145         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2146
2147         ji->ip.i = ip;
2148         ji->type = type;
2149         ji->data.target = target;
2150
2151         return ji;
2152 }
2153
2154 int
2155 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2156 {
2157         if (cfg->gshared)
2158                 return mono_class_check_context_used (klass);
2159         else
2160                 return 0;
2161 }
2162
2163 static int
2164 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2165 {
2166         if (cfg->gshared)
2167                 return mono_method_check_context_used (method);
2168         else
2169                 return 0;
2170 }
2171
2172 /*
2173  * check_method_sharing:
2174  *
2175  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2176  */
2177 static void
2178 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2179 {
2180         gboolean pass_vtable = FALSE;
2181         gboolean pass_mrgctx = FALSE;
2182
2183         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2184                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2185                 gboolean sharable = FALSE;
2186
2187                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2188                         sharable = TRUE;
2189
2190                 /*
2191                  * Pass vtable iff target method might
2192                  * be shared, which means that sharing
2193                  * is enabled for its class and its
2194                  * context is sharable (and it's not a
2195                  * generic method).
2196                  */
2197                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2198                         pass_vtable = TRUE;
2199         }
2200
2201         if (mini_method_get_context (cmethod) &&
2202                 mini_method_get_context (cmethod)->method_inst) {
2203                 g_assert (!pass_vtable);
2204
2205                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2206                         pass_mrgctx = TRUE;
2207                 } else {
2208                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2209                                 pass_mrgctx = TRUE;
2210                 }
2211         }
2212
2213         if (out_pass_vtable)
2214                 *out_pass_vtable = pass_vtable;
2215         if (out_pass_mrgctx)
2216                 *out_pass_mrgctx = pass_mrgctx;
2217 }
2218
2219 inline static MonoCallInst *
2220 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2221                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline, MonoMethod *target)
2222 {
2223         MonoType *sig_ret;
2224         MonoCallInst *call;
2225 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2226         int i;
2227 #endif
2228
2229         if (cfg->llvm_only)
2230                 tail = FALSE;
2231
2232         if (tail) {
2233                 mini_profiler_emit_tail_call (cfg, target);
2234
2235                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2236         } else
2237                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2238
2239         call->args = args;
2240         call->signature = sig;
2241         call->rgctx_reg = rgctx;
2242         sig_ret = mini_get_underlying_type (sig->ret);
2243
2244         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2245
2246         if (tail) {
2247                 if (mini_type_is_vtype (sig_ret)) {
2248                         call->vret_var = cfg->vret_addr;
2249                         //g_assert_not_reached ();
2250                 }
2251         } else if (mini_type_is_vtype (sig_ret)) {
2252                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2253                 MonoInst *loada;
2254
2255                 temp->backend.is_pinvoke = sig->pinvoke;
2256
2257                 /*
2258                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2259                  * address of return value to increase optimization opportunities.
2260                  * Before vtype decomposition, the dreg of the call ins itself represents the
2261                  * fact the call modifies the return value. After decomposition, the call will
2262                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2263                  * will be transformed into an LDADDR.
2264                  */
2265                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2266                 loada->dreg = alloc_preg (cfg);
2267                 loada->inst_p0 = temp;
2268                 /* We reference the call too since call->dreg could change during optimization */
2269                 loada->inst_p1 = call;
2270                 MONO_ADD_INS (cfg->cbb, loada);
2271
2272                 call->inst.dreg = temp->dreg;
2273
2274                 call->vret_var = loada;
2275         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2276                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2277
2278 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2279         if (COMPILE_SOFT_FLOAT (cfg)) {
2280                 /*
2281                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2282                  * an icall, but that cannot be done during the call sequence since it would clobber
2283                  * the call registers + the stack. So we do it before emitting the call.
2284                  */
2285                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2286                         MonoType *t;
2287                         MonoInst *in = call->args [i];
2288
2289                         if (i >= sig->hasthis)
2290                                 t = sig->params [i - sig->hasthis];
2291                         else
2292                                 t = &mono_defaults.int_class->byval_arg;
2293                         t = mono_type_get_underlying_type (t);
2294
2295                         if (!t->byref && t->type == MONO_TYPE_R4) {
2296                                 MonoInst *iargs [1];
2297                                 MonoInst *conv;
2298
2299                                 iargs [0] = in;
2300                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2301
2302                                 /* The result will be in an int vreg */
2303                                 call->args [i] = conv;
2304                         }
2305                 }
2306         }
2307 #endif
2308
2309         call->need_unbox_trampoline = unbox_trampoline;
2310
2311 #ifdef ENABLE_LLVM
2312         if (COMPILE_LLVM (cfg))
2313                 mono_llvm_emit_call (cfg, call);
2314         else
2315                 mono_arch_emit_call (cfg, call);
2316 #else
2317         mono_arch_emit_call (cfg, call);
2318 #endif
2319
2320         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2321         cfg->flags |= MONO_CFG_HAS_CALLS;
2322
2323         return call;
2324 }
2325
2326 static void
2327 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2328 {
2329         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2330         cfg->uses_rgctx_reg = TRUE;
2331         call->rgctx_reg = TRUE;
2332 #ifdef ENABLE_LLVM
2333         call->rgctx_arg_reg = rgctx_reg;
2334 #endif
2335 }
2336
2337 MonoInst*
2338 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2339 {
2340         MonoCallInst *call;
2341         MonoInst *ins;
2342         int rgctx_reg = -1;
2343         gboolean check_sp = FALSE;
2344
2345         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2346                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2347
2348                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2349                         check_sp = TRUE;
2350         }
2351
2352         if (rgctx_arg) {
2353                 rgctx_reg = mono_alloc_preg (cfg);
2354                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2355         }
2356
2357         if (check_sp) {
2358                 if (!cfg->stack_inbalance_var)
2359                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2360
2361                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2362                 ins->dreg = cfg->stack_inbalance_var->dreg;
2363                 MONO_ADD_INS (cfg->cbb, ins);
2364         }
2365
2366         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE, NULL);
2367
2368         call->inst.sreg1 = addr->dreg;
2369
2370         if (imt_arg)
2371                 emit_imt_argument (cfg, call, NULL, imt_arg);
2372
2373         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2374
2375         if (check_sp) {
2376                 int sp_reg;
2377
2378                 sp_reg = mono_alloc_preg (cfg);
2379
2380                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2381                 ins->dreg = sp_reg;
2382                 MONO_ADD_INS (cfg->cbb, ins);
2383
2384                 /* Restore the stack so we don't crash when throwing the exception */
2385                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2386                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2387                 MONO_ADD_INS (cfg->cbb, ins);
2388
2389                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2390                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2391         }
2392
2393         if (rgctx_arg)
2394                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2395
2396         return (MonoInst*)call;
2397 }
2398
2399 static MonoInst*
2400 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2401
2402 static MonoInst*
2403 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2404                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2405 {
2406 #ifndef DISABLE_REMOTING
2407         gboolean might_be_remote = FALSE;
2408 #endif
2409         gboolean virtual_ = this_ins != NULL;
2410         gboolean enable_for_aot = TRUE;
2411         int context_used;
2412         MonoCallInst *call;
2413         MonoInst *call_target = NULL;
2414         int rgctx_reg = 0;
2415         gboolean need_unbox_trampoline;
2416
2417         if (!sig)
2418                 sig = mono_method_signature (method);
2419
2420         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2421                 g_assert_not_reached ();
2422
2423         if (rgctx_arg) {
2424                 rgctx_reg = mono_alloc_preg (cfg);
2425                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2426         }
2427
2428         if (method->string_ctor) {
2429                 /* Create the real signature */
2430                 /* FIXME: Cache these */
2431                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2432                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2433
2434                 sig = ctor_sig;
2435         }
2436
2437         context_used = mini_method_check_context_used (cfg, method);
2438
2439 #ifndef DISABLE_REMOTING
2440         might_be_remote = this_ins && sig->hasthis &&
2441                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2442                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2443
2444         if (might_be_remote && context_used) {
2445                 MonoInst *addr;
2446
2447                 g_assert (cfg->gshared);
2448
2449                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2450
2451                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2452         }
2453 #endif
2454
2455         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2456                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2457
2458         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2459
2460         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline, method);
2461
2462 #ifndef DISABLE_REMOTING
2463         if (might_be_remote)
2464                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2465         else
2466 #endif
2467                 call->method = method;
2468         call->inst.flags |= MONO_INST_HAS_METHOD;
2469         call->inst.inst_left = this_ins;
2470         call->tail_call = tail;
2471
2472         if (virtual_) {
2473                 int vtable_reg, slot_reg, this_reg;
2474                 int offset;
2475
2476                 this_reg = this_ins->dreg;
2477
2478                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2479                         MonoInst *dummy_use;
2480
2481                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2482
2483                         /* Make a call to delegate->invoke_impl */
2484                         call->inst.inst_basereg = this_reg;
2485                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2486                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2487
2488                         /* We must emit a dummy use here because the delegate trampoline will
2489                         replace the 'this' argument with the delegate target making this activation
2490                         no longer a root for the delegate.
2491                         This is an issue for delegates that target collectible code such as dynamic
2492                         methods of GC'able assemblies.
2493
2494                         For a test case look into #667921.
2495
2496                         FIXME: a dummy use is not the best way to do it as the local register allocator
2497                         will put it on a caller save register and spil it around the call.
2498                         Ideally, we would either put it on a callee save register or only do the store part.
2499                          */
2500                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2501
2502                         return (MonoInst*)call;
2503                 }
2504
2505                 if ((!cfg->compile_aot || enable_for_aot) &&
2506                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2507                          (MONO_METHOD_IS_FINAL (method) &&
2508                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2509                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2510                         /*
2511                          * the method is not virtual, we just need to ensure this is not null
2512                          * and then we can call the method directly.
2513                          */
2514 #ifndef DISABLE_REMOTING
2515                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2516                                 /*
2517                                  * The check above ensures method is not gshared, this is needed since
2518                                  * gshared methods can't have wrappers.
2519                                  */
2520                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2521                         }
2522 #endif
2523
2524                         if (!method->string_ctor)
2525                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2526
2527                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2528                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2529                         /*
2530                          * the method is virtual, but we can statically dispatch since either
2531                          * it's class or the method itself are sealed.
2532                          * But first we need to ensure it's not a null reference.
2533                          */
2534                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2535
2536                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2537                 } else if (call_target) {
2538                         vtable_reg = alloc_preg (cfg);
2539                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2540
2541                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2542                         call->inst.sreg1 = call_target->dreg;
2543                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2544                 } else {
2545                         vtable_reg = alloc_preg (cfg);
2546                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2547                         if (mono_class_is_interface (method->klass)) {
2548                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2549                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2550                                 slot_reg = vtable_reg;
2551                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2552                         } else {
2553                                 slot_reg = vtable_reg;
2554                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2555                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2556                                 if (imt_arg) {
2557                                         g_assert (mono_method_signature (method)->generic_param_count);
2558                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2559                                 }
2560                         }
2561
2562                         call->inst.sreg1 = slot_reg;
2563                         call->inst.inst_offset = offset;
2564                         call->is_virtual = TRUE;
2565                 }
2566         }
2567
2568         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2569
2570         if (rgctx_arg)
2571                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2572
2573         return (MonoInst*)call;
2574 }
2575
2576 MonoInst*
2577 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2578 {
2579         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2580 }
2581
2582 MonoInst*
2583 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2584                                            MonoInst **args)
2585 {
2586         MonoCallInst *call;
2587
2588         g_assert (sig);
2589
2590         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE, NULL);
2591         call->fptr = func;
2592
2593         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2594
2595         return (MonoInst*)call;
2596 }
2597
2598 MonoInst*
2599 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2600 {
2601         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2602
2603         g_assert (info);
2604
2605         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2606 }
2607
2608 /*
2609  * mono_emit_abs_call:
2610  *
2611  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2612  */
2613 inline static MonoInst*
2614 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2615                                         MonoMethodSignature *sig, MonoInst **args)
2616 {
2617         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2618         MonoInst *ins;
2619
2620         /*
2621          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2622          * handle it.
2623          */
2624         if (cfg->abs_patches == NULL)
2625                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2626         g_hash_table_insert (cfg->abs_patches, ji, ji);
2627         ins = mono_emit_native_call (cfg, ji, sig, args);
2628         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2629         return ins;
2630 }
2631
2632 static MonoMethodSignature*
2633 sig_to_rgctx_sig (MonoMethodSignature *sig)
2634 {
2635         // FIXME: memory allocation
2636         MonoMethodSignature *res;
2637         int i;
2638
2639         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2640         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2641         res->param_count = sig->param_count + 1;
2642         for (i = 0; i < sig->param_count; ++i)
2643                 res->params [i] = sig->params [i];
2644         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2645         return res;
2646 }
2647
2648 /* Make an indirect call to FSIG passing an additional argument */
2649 static MonoInst*
2650 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2651 {
2652         MonoMethodSignature *csig;
2653         MonoInst *args_buf [16];
2654         MonoInst **args;
2655         int i, pindex, tmp_reg;
2656
2657         /* Make a call with an rgctx/extra arg */
2658         if (fsig->param_count + 2 < 16)
2659                 args = args_buf;
2660         else
2661                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2662         pindex = 0;
2663         if (fsig->hasthis)
2664                 args [pindex ++] = orig_args [0];
2665         for (i = 0; i < fsig->param_count; ++i)
2666                 args [pindex ++] = orig_args [fsig->hasthis + i];
2667         tmp_reg = alloc_preg (cfg);
2668         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2669         csig = sig_to_rgctx_sig (fsig);
2670         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2671 }
2672
2673 /* Emit an indirect call to the function descriptor ADDR */
2674 static MonoInst*
2675 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2676 {
2677         int addr_reg, arg_reg;
2678         MonoInst *call_target;
2679
2680         g_assert (cfg->llvm_only);
2681
2682         /*
2683          * addr points to a <addr, arg> pair, load both of them, and
2684          * make a call to addr, passing arg as an extra arg.
2685          */
2686         addr_reg = alloc_preg (cfg);
2687         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2688         arg_reg = alloc_preg (cfg);
2689         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2690
2691         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2692 }
2693
2694 static gboolean
2695 direct_icalls_enabled (MonoCompile *cfg)
2696 {
2697         return FALSE;
2698
2699         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2700 #ifdef TARGET_AMD64
2701         if (cfg->compile_llvm && !cfg->llvm_only)
2702                 return FALSE;
2703 #endif
2704         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2705                 return FALSE;
2706         return TRUE;
2707 }
2708
2709 MonoInst*
2710 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2711 {
2712         /*
2713          * Call the jit icall without a wrapper if possible.
2714          * The wrapper is needed for the following reasons:
2715          * - to handle exceptions thrown using mono_raise_exceptions () from the
2716          *   icall function. The EH code needs the lmf frame pushed by the
2717          *   wrapper to be able to unwind back to managed code.
2718          * - to be able to do stack walks for asynchronously suspended
2719          *   threads when debugging.
2720          */
2721         if (info->no_raise && direct_icalls_enabled (cfg)) {
2722                 char *name;
2723                 int costs;
2724
2725                 if (!info->wrapper_method) {
2726                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2727                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2728                         g_free (name);
2729                         mono_memory_barrier ();
2730                 }
2731
2732                 /*
2733                  * Inline the wrapper method, which is basically a call to the C icall, and
2734                  * an exception check.
2735                  */
2736                 costs = inline_method (cfg, info->wrapper_method, NULL,
2737                                                            args, NULL, il_offset, TRUE);
2738                 g_assert (costs > 0);
2739                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2740
2741                 return args [0];
2742         } else {
2743                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2744         }
2745 }
2746
2747 static MonoInst*
2748 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2749 {
2750         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2751                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2752                         int widen_op = -1;
2753
2754                         /*
2755                          * Native code might return non register sized integers
2756                          * without initializing the upper bits.
2757                          */
2758                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2759                         case OP_LOADI1_MEMBASE:
2760                                 widen_op = OP_ICONV_TO_I1;
2761                                 break;
2762                         case OP_LOADU1_MEMBASE:
2763                                 widen_op = OP_ICONV_TO_U1;
2764                                 break;
2765                         case OP_LOADI2_MEMBASE:
2766                                 widen_op = OP_ICONV_TO_I2;
2767                                 break;
2768                         case OP_LOADU2_MEMBASE:
2769                                 widen_op = OP_ICONV_TO_U2;
2770                                 break;
2771                         default:
2772                                 break;
2773                         }
2774
2775                         if (widen_op != -1) {
2776                                 int dreg = alloc_preg (cfg);
2777                                 MonoInst *widen;
2778
2779                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2780                                 widen->type = ins->type;
2781                                 ins = widen;
2782                         }
2783                 }
2784         }
2785
2786         return ins;
2787 }
2788
2789
2790 static void
2791 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2792 {
2793         MonoInst *args [16];
2794
2795         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2796         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2797
2798         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2799 }
2800
2801 MonoMethod*
2802 mini_get_memcpy_method (void)
2803 {
2804         static MonoMethod *memcpy_method = NULL;
2805         if (!memcpy_method) {
2806                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2807                 if (!memcpy_method)
2808                         g_error ("Old corlib found. Install a new one");
2809         }
2810         return memcpy_method;
2811 }
2812
2813 void
2814 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2815 {
2816         int card_table_shift_bits;
2817         gpointer card_table_mask;
2818         guint8 *card_table;
2819         MonoInst *dummy_use;
2820         int nursery_shift_bits;
2821         size_t nursery_size;
2822
2823         if (!cfg->gen_write_barriers)
2824                 return;
2825
2826         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2827
2828         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2829
2830         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2831
2832         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2833                 MonoInst *wbarrier;
2834
2835                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2836                 wbarrier->sreg1 = ptr->dreg;
2837                 wbarrier->sreg2 = value->dreg;
2838                 MONO_ADD_INS (cfg->cbb, wbarrier);
2839         } else if (card_table) {
2840                 int offset_reg = alloc_preg (cfg);
2841                 int card_reg;
2842                 MonoInst *ins;
2843
2844                 /*
2845                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2846                  * collector case, so, for the serial collector, it might slightly slow down nursery
2847                  * collections. We also expect that the host system and the target system have the same card
2848                  * table configuration, which is the case if they have the same pointer size.
2849                  */
2850
2851                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2852                 if (card_table_mask)
2853                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2854
2855                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2856                  * IMM's larger than 32bits.
2857                  */
2858                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2859                 card_reg = ins->dreg;
2860
2861                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2862                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2863         } else {
2864                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2865                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2866         }
2867
2868         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2869 }
2870
2871 MonoMethod*
2872 mini_get_memset_method (void)
2873 {
2874         static MonoMethod *memset_method = NULL;
2875         if (!memset_method) {
2876                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2877                 if (!memset_method)
2878                         g_error ("Old corlib found. Install a new one");
2879         }
2880         return memset_method;
2881 }
2882
2883 void
2884 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2885 {
2886         MonoInst *iargs [3];
2887         int n;
2888         guint32 align;
2889         MonoMethod *memset_method;
2890         MonoInst *size_ins = NULL;
2891         MonoInst *bzero_ins = NULL;
2892         static MonoMethod *bzero_method;
2893
2894         /* FIXME: Optimize this for the case when dest is an LDADDR */
2895         mono_class_init (klass);
2896         if (mini_is_gsharedvt_klass (klass)) {
2897                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2898                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2899                 if (!bzero_method)
2900                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2901                 g_assert (bzero_method);
2902                 iargs [0] = dest;
2903                 iargs [1] = size_ins;
2904                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2905                 return;
2906         }
2907
2908         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2909
2910         n = mono_class_value_size (klass, &align);
2911
2912         if (n <= sizeof (gpointer) * 8) {
2913                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2914         }
2915         else {
2916                 memset_method = mini_get_memset_method ();
2917                 iargs [0] = dest;
2918                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2919                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2920                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2921         }
2922 }
2923
2924 /*
2925  * emit_get_rgctx:
2926  *
2927  *   Emit IR to return either the this pointer for instance method,
2928  * or the mrgctx for static methods.
2929  */
2930 static MonoInst*
2931 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2932 {
2933         MonoInst *this_ins = NULL;
2934
2935         g_assert (cfg->gshared);
2936
2937         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2938                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2939                 !method->klass->valuetype)
2940                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2941
2942         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2943                 MonoInst *mrgctx_loc, *mrgctx_var;
2944
2945                 g_assert (!this_ins);
2946                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2947
2948                 mrgctx_loc = mono_get_vtable_var (cfg);
2949                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2950
2951                 return mrgctx_var;
2952         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2953                 MonoInst *mrgctx_loc, *mrgctx_var;
2954
2955                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2956                 mrgctx_loc = mono_get_vtable_var (cfg);
2957                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2958
2959                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2960
2961                 return mrgctx_var;
2962         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2963                 MonoInst *vtable_loc, *vtable_var;
2964
2965                 g_assert (!this_ins);
2966
2967                 vtable_loc = mono_get_vtable_var (cfg);
2968                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2969
2970                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2971                         MonoInst *mrgctx_var = vtable_var;
2972                         int vtable_reg;
2973
2974                         vtable_reg = alloc_preg (cfg);
2975                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2976                         vtable_var->type = STACK_PTR;
2977                 }
2978
2979                 return vtable_var;
2980         } else {
2981                 MonoInst *ins;
2982                 int vtable_reg;
2983
2984                 vtable_reg = alloc_preg (cfg);
2985                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2986                 return ins;
2987         }
2988 }
2989
2990 static MonoJumpInfoRgctxEntry *
2991 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
2992 {
2993         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2994         res->method = method;
2995         res->in_mrgctx = in_mrgctx;
2996         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2997         res->data->type = patch_type;
2998         res->data->data.target = patch_data;
2999         res->info_type = info_type;
3000
3001         return res;
3002 }
3003
3004 static inline MonoInst*
3005 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3006 {
3007         MonoInst *args [16];
3008         MonoInst *call;
3009
3010         // FIXME: No fastpath since the slot is not a compile time constant
3011         args [0] = rgctx;
3012         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3013         if (entry->in_mrgctx)
3014                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3015         else
3016                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3017         return call;
3018 #if 0
3019         /*
3020          * FIXME: This can be called during decompose, which is a problem since it creates
3021          * new bblocks.
3022          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3023          */
3024         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3025         gboolean mrgctx;
3026         MonoBasicBlock *is_null_bb, *end_bb;
3027         MonoInst *res, *ins, *call;
3028         MonoInst *args[16];
3029
3030         slot = mini_get_rgctx_entry_slot (entry);
3031
3032         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3033         index = MONO_RGCTX_SLOT_INDEX (slot);
3034         if (mrgctx)
3035                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3036         for (depth = 0; ; ++depth) {
3037                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3038
3039                 if (index < size - 1)
3040                         break;
3041                 index -= size - 1;
3042         }
3043
3044         NEW_BBLOCK (cfg, end_bb);
3045         NEW_BBLOCK (cfg, is_null_bb);
3046
3047         if (mrgctx) {
3048                 rgctx_reg = rgctx->dreg;
3049         } else {
3050                 rgctx_reg = alloc_preg (cfg);
3051
3052                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3053                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3054                 NEW_BBLOCK (cfg, is_null_bb);
3055
3056                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3057                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3058         }
3059
3060         for (i = 0; i < depth; ++i) {
3061                 int array_reg = alloc_preg (cfg);
3062
3063                 /* load ptr to next array */
3064                 if (mrgctx && i == 0)
3065                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3066                 else
3067                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3068                 rgctx_reg = array_reg;
3069                 /* is the ptr null? */
3070                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3071                 /* if yes, jump to actual trampoline */
3072                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3073         }
3074
3075         /* fetch slot */
3076         val_reg = alloc_preg (cfg);
3077         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3078         /* is the slot null? */
3079         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3080         /* if yes, jump to actual trampoline */
3081         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3082
3083         /* Fastpath */
3084         res_reg = alloc_preg (cfg);
3085         MONO_INST_NEW (cfg, ins, OP_MOVE);
3086         ins->dreg = res_reg;
3087         ins->sreg1 = val_reg;
3088         MONO_ADD_INS (cfg->cbb, ins);
3089         res = ins;
3090         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3091
3092         /* Slowpath */
3093         MONO_START_BB (cfg, is_null_bb);
3094         args [0] = rgctx;
3095         EMIT_NEW_ICONST (cfg, args [1], index);
3096         if (mrgctx)
3097                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3098         else
3099                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3100         MONO_INST_NEW (cfg, ins, OP_MOVE);
3101         ins->dreg = res_reg;
3102         ins->sreg1 = call->dreg;
3103         MONO_ADD_INS (cfg->cbb, ins);
3104         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3105
3106         MONO_START_BB (cfg, end_bb);
3107
3108         return res;
3109 #endif
3110 }
3111
3112 /*
3113  * emit_rgctx_fetch:
3114  *
3115  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3116  * given by RGCTX.
3117  */
3118 static inline MonoInst*
3119 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3120 {
3121         if (cfg->llvm_only)
3122                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3123         else
3124                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3125 }
3126
3127 MonoInst*
3128 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3129                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3130 {
3131         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);
3132         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3133
3134         return emit_rgctx_fetch (cfg, rgctx, entry);
3135 }
3136
3137 static MonoInst*
3138 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3139                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3140 {
3141         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);
3142         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3143
3144         return emit_rgctx_fetch (cfg, rgctx, entry);
3145 }
3146
3147 static MonoInst*
3148 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3149                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3150 {
3151         MonoJumpInfoGSharedVtCall *call_info;
3152         MonoJumpInfoRgctxEntry *entry;
3153         MonoInst *rgctx;
3154
3155         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3156         call_info->sig = sig;
3157         call_info->method = cmethod;
3158
3159         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);
3160         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3161
3162         return emit_rgctx_fetch (cfg, rgctx, entry);
3163 }
3164
3165 /*
3166  * emit_get_rgctx_virt_method:
3167  *
3168  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3169  */
3170 static MonoInst*
3171 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3172                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3173 {
3174         MonoJumpInfoVirtMethod *info;
3175         MonoJumpInfoRgctxEntry *entry;
3176         MonoInst *rgctx;
3177
3178         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3179         info->klass = klass;
3180         info->method = virt_method;
3181
3182         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);
3183         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3184
3185         return emit_rgctx_fetch (cfg, rgctx, entry);
3186 }
3187
3188 static MonoInst*
3189 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3190                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3191 {
3192         MonoJumpInfoRgctxEntry *entry;
3193         MonoInst *rgctx;
3194
3195         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);
3196         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3197
3198         return emit_rgctx_fetch (cfg, rgctx, entry);
3199 }
3200
3201 /*
3202  * emit_get_rgctx_method:
3203  *
3204  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3205  * normal constants, else emit a load from the rgctx.
3206  */
3207 static MonoInst*
3208 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3209                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3210 {
3211         if (!context_used) {
3212                 MonoInst *ins;
3213
3214                 switch (rgctx_type) {
3215                 case MONO_RGCTX_INFO_METHOD:
3216                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3217                         return ins;
3218                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3219                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3220                         return ins;
3221                 default:
3222                         g_assert_not_reached ();
3223                 }
3224         } else {
3225                 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);
3226                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3227
3228                 return emit_rgctx_fetch (cfg, rgctx, entry);
3229         }
3230 }
3231
3232 static MonoInst*
3233 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3234                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3235 {
3236         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);
3237         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3238
3239         return emit_rgctx_fetch (cfg, rgctx, entry);
3240 }
3241
3242 static int
3243 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3244 {
3245         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3246         MonoRuntimeGenericContextInfoTemplate *template_;
3247         int i, idx;
3248
3249         g_assert (info);
3250
3251         for (i = 0; i < info->num_entries; ++i) {
3252                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3253
3254                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3255                         return i;
3256         }
3257
3258         if (info->num_entries == info->count_entries) {
3259                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3260                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3261
3262                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3263
3264                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3265                 info->entries = new_entries;
3266                 info->count_entries = new_count_entries;
3267         }
3268
3269         idx = info->num_entries;
3270         template_ = &info->entries [idx];
3271         template_->info_type = rgctx_type;
3272         template_->data = data;
3273
3274         info->num_entries ++;
3275
3276         return idx;
3277 }
3278
3279 /*
3280  * emit_get_gsharedvt_info:
3281  *
3282  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3283  */
3284 static MonoInst*
3285 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3286 {
3287         MonoInst *ins;
3288         int idx, dreg;
3289
3290         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3291         /* Load info->entries [idx] */
3292         dreg = alloc_preg (cfg);
3293         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3294
3295         return ins;
3296 }
3297
3298 MonoInst*
3299 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3300 {
3301         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3302 }
3303
3304 /*
3305  * On return the caller must check @klass for load errors.
3306  */
3307 static void
3308 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3309 {
3310         MonoInst *vtable_arg;
3311         int context_used;
3312
3313         context_used = mini_class_check_context_used (cfg, klass);
3314
3315         if (context_used) {
3316                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3317                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3318         } else {
3319                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3320
3321                 if (!vtable)
3322                         return;
3323                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3324         }
3325
3326         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3327                 MonoInst *ins;
3328
3329                 /*
3330                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3331                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3332                  */
3333                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3334                 ins->sreg1 = vtable_arg->dreg;
3335                 MONO_ADD_INS (cfg->cbb, ins);
3336         } else {
3337                 int inited_reg;
3338                 MonoBasicBlock *inited_bb;
3339                 MonoInst *args [16];
3340
3341                 inited_reg = alloc_ireg (cfg);
3342
3343                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3344
3345                 NEW_BBLOCK (cfg, inited_bb);
3346
3347                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3348                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3349
3350                 args [0] = vtable_arg;
3351                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3352
3353                 MONO_START_BB (cfg, inited_bb);
3354         }
3355 }
3356
3357 static void
3358 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3359 {
3360         MonoInst *ins;
3361
3362         if (cfg->gen_seq_points && cfg->method == method) {
3363                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3364                 if (nonempty_stack)
3365                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3366                 MONO_ADD_INS (cfg->cbb, ins);
3367         }
3368 }
3369
3370 void
3371 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3372 {
3373         if (mini_get_debug_options ()->better_cast_details) {
3374                 int vtable_reg = alloc_preg (cfg);
3375                 int klass_reg = alloc_preg (cfg);
3376                 MonoBasicBlock *is_null_bb = NULL;
3377                 MonoInst *tls_get;
3378                 int to_klass_reg, context_used;
3379
3380                 if (null_check) {
3381                         NEW_BBLOCK (cfg, is_null_bb);
3382
3383                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3384                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3385                 }
3386
3387                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3388                 if (!tls_get) {
3389                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3390                         exit (1);
3391                 }
3392
3393                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3394                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3395
3396                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3397
3398                 context_used = mini_class_check_context_used (cfg, klass);
3399                 if (context_used) {
3400                         MonoInst *class_ins;
3401
3402                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3403                         to_klass_reg = class_ins->dreg;
3404                 } else {
3405                         to_klass_reg = alloc_preg (cfg);
3406                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3407                 }
3408                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3409
3410                 if (null_check)
3411                         MONO_START_BB (cfg, is_null_bb);
3412         }
3413 }
3414
3415 void
3416 mini_reset_cast_details (MonoCompile *cfg)
3417 {
3418         /* Reset the variables holding the cast details */
3419         if (mini_get_debug_options ()->better_cast_details) {
3420                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3421                 /* It is enough to reset the from field */
3422                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3423         }
3424 }
3425
3426 /*
3427  * On return the caller must check @array_class for load errors
3428  */
3429 static void
3430 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3431 {
3432         int vtable_reg = alloc_preg (cfg);
3433         int context_used;
3434
3435         context_used = mini_class_check_context_used (cfg, array_class);
3436
3437         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3438
3439         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3440
3441         if (cfg->opt & MONO_OPT_SHARED) {
3442                 int class_reg = alloc_preg (cfg);
3443                 MonoInst *ins;
3444
3445                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3446                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3447                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3448         } else if (context_used) {
3449                 MonoInst *vtable_ins;
3450
3451                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3452                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3453         } else {
3454                 if (cfg->compile_aot) {
3455                         int vt_reg;
3456                         MonoVTable *vtable;
3457
3458                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3459                                 return;
3460                         vt_reg = alloc_preg (cfg);
3461                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3462                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3463                 } else {
3464                         MonoVTable *vtable;
3465                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3466                                 return;
3467                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3468                 }
3469         }
3470
3471         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3472
3473         mini_reset_cast_details (cfg);
3474 }
3475
3476 /**
3477  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3478  * generic code is generated.
3479  */
3480 static MonoInst*
3481 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3482 {
3483         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3484
3485         if (context_used) {
3486                 MonoInst *rgctx, *addr;
3487
3488                 /* FIXME: What if the class is shared?  We might not
3489                    have to get the address of the method from the
3490                    RGCTX. */
3491                 addr = emit_get_rgctx_method (cfg, context_used, method,
3492                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3493                 if (cfg->llvm_only) {
3494                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3495                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3496                 } else {
3497                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3498
3499                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3500                 }
3501         } else {
3502                 gboolean pass_vtable, pass_mrgctx;
3503                 MonoInst *rgctx_arg = NULL;
3504
3505                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3506                 g_assert (!pass_mrgctx);
3507
3508                 if (pass_vtable) {
3509                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3510
3511                         g_assert (vtable);
3512                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3513                 }
3514
3515                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3516         }
3517 }
3518
3519 static MonoInst*
3520 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3521 {
3522         MonoInst *add;
3523         int obj_reg;
3524         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3525         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3526         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3527         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3528
3529         obj_reg = sp [0]->dreg;
3530         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3531         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3532
3533         /* FIXME: generics */
3534         g_assert (klass->rank == 0);
3535
3536         // Check rank == 0
3537         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3538         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3539
3540         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3541         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3542
3543         if (context_used) {
3544                 MonoInst *element_class;
3545
3546                 /* This assertion is from the unboxcast insn */
3547                 g_assert (klass->rank == 0);
3548
3549                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3550                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3551
3552                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3553                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3554         } else {
3555                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3556                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3557                 mini_reset_cast_details (cfg);
3558         }
3559
3560         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3561         MONO_ADD_INS (cfg->cbb, add);
3562         add->type = STACK_MP;
3563         add->klass = klass;
3564
3565         return add;
3566 }
3567
3568 static MonoInst*
3569 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3570 {
3571         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3572         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3573         MonoInst *ins;
3574         int dreg, addr_reg;
3575
3576         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3577
3578         /* obj */
3579         args [0] = obj;
3580
3581         /* klass */
3582         args [1] = klass_inst;
3583
3584         /* CASTCLASS */
3585         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3586
3587         NEW_BBLOCK (cfg, is_ref_bb);
3588         NEW_BBLOCK (cfg, is_nullable_bb);
3589         NEW_BBLOCK (cfg, end_bb);
3590         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3591         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3592         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3593
3594         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3595         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3596
3597         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3598         addr_reg = alloc_dreg (cfg, STACK_MP);
3599
3600         /* Non-ref case */
3601         /* UNBOX */
3602         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3603         MONO_ADD_INS (cfg->cbb, addr);
3604
3605         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3606
3607         /* Ref case */
3608         MONO_START_BB (cfg, is_ref_bb);
3609
3610         /* Save the ref to a temporary */
3611         dreg = alloc_ireg (cfg);
3612         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3613         addr->dreg = addr_reg;
3614         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3615         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3616
3617         /* Nullable case */
3618         MONO_START_BB (cfg, is_nullable_bb);
3619
3620         {
3621                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3622                 MonoInst *unbox_call;
3623                 MonoMethodSignature *unbox_sig;
3624
3625                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3626                 unbox_sig->ret = &klass->byval_arg;
3627                 unbox_sig->param_count = 1;
3628                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3629
3630                 if (cfg->llvm_only)
3631                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3632                 else
3633                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3634
3635                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3636                 addr->dreg = addr_reg;
3637         }
3638
3639         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3640
3641         /* End */
3642         MONO_START_BB (cfg, end_bb);
3643
3644         /* LDOBJ */
3645         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3646
3647         return ins;
3648 }
3649
3650 /*
3651  * Returns NULL and set the cfg exception on error.
3652  */
3653 static MonoInst*
3654 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3655 {
3656         MonoInst *iargs [2];
3657         void *alloc_ftn;
3658
3659         if (context_used) {
3660                 MonoInst *data;
3661                 MonoRgctxInfoType rgctx_info;
3662                 MonoInst *iargs [2];
3663                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3664
3665                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3666
3667                 if (cfg->opt & MONO_OPT_SHARED)
3668                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3669                 else
3670                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3671                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3672
3673                 if (cfg->opt & MONO_OPT_SHARED) {
3674                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3675                         iargs [1] = data;
3676                         alloc_ftn = ves_icall_object_new;
3677                 } else {
3678                         iargs [0] = data;
3679                         alloc_ftn = ves_icall_object_new_specific;
3680                 }
3681
3682                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3683                         if (known_instance_size) {
3684                                 int size = mono_class_instance_size (klass);
3685                                 if (size < sizeof (MonoObject))
3686                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3687
3688                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3689                         }
3690                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3691                 }
3692
3693                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3694         }
3695
3696         if (cfg->opt & MONO_OPT_SHARED) {
3697                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3698                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3699
3700                 alloc_ftn = ves_icall_object_new;
3701         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3702                 /* This happens often in argument checking code, eg. throw new FooException... */
3703                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3704                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3705                 alloc_ftn = mono_helper_newobj_mscorlib;
3706         } else {
3707                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3708                 MonoMethod *managed_alloc = NULL;
3709
3710                 if (!vtable) {
3711                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3712                         cfg->exception_ptr = klass;
3713                         return NULL;
3714                 }
3715
3716                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3717
3718                 if (managed_alloc) {
3719                         int size = mono_class_instance_size (klass);
3720                         if (size < sizeof (MonoObject))
3721                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3722
3723                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3724                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3725                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3726                 }
3727                 alloc_ftn = ves_icall_object_new_specific;
3728                 EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3729         }
3730
3731         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3732 }
3733
3734 /*
3735  * Returns NULL and set the cfg exception on error.
3736  */
3737 static MonoInst*
3738 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3739 {
3740         MonoInst *alloc, *ins;
3741
3742         if (mono_class_is_nullable (klass)) {
3743                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3744
3745                 if (context_used) {
3746                         if (cfg->llvm_only && cfg->gsharedvt) {
3747                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3748                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3749                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3750                         } else {
3751                                 /* FIXME: What if the class is shared?  We might not
3752                                    have to get the method address from the RGCTX. */
3753                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3754                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3755                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3756
3757                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3758                         }
3759                 } else {
3760                         gboolean pass_vtable, pass_mrgctx;
3761                         MonoInst *rgctx_arg = NULL;
3762
3763                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3764                         g_assert (!pass_mrgctx);
3765
3766                         if (pass_vtable) {
3767                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3768
3769                                 g_assert (vtable);
3770                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3771                         }
3772
3773                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3774                 }
3775         }
3776
3777         if (mini_is_gsharedvt_klass (klass)) {
3778                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3779                 MonoInst *res, *is_ref, *src_var, *addr;
3780                 int dreg;
3781
3782                 dreg = alloc_ireg (cfg);
3783
3784                 NEW_BBLOCK (cfg, is_ref_bb);
3785                 NEW_BBLOCK (cfg, is_nullable_bb);
3786                 NEW_BBLOCK (cfg, end_bb);
3787                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3788                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3789                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3790
3791                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3792                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3793
3794                 /* Non-ref case */
3795                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3796                 if (!alloc)
3797                         return NULL;
3798                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3799                 ins->opcode = OP_STOREV_MEMBASE;
3800
3801                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3802                 res->type = STACK_OBJ;
3803                 res->klass = klass;
3804                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3805
3806                 /* Ref case */
3807                 MONO_START_BB (cfg, is_ref_bb);
3808
3809                 /* val is a vtype, so has to load the value manually */
3810                 src_var = get_vreg_to_inst (cfg, val->dreg);
3811                 if (!src_var)
3812                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3813                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3814                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3816
3817                 /* Nullable case */
3818                 MONO_START_BB (cfg, is_nullable_bb);
3819
3820                 {
3821                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3822                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3823                         MonoInst *box_call;
3824                         MonoMethodSignature *box_sig;
3825
3826                         /*
3827                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3828                          * construct that method at JIT time, so have to do things by hand.
3829                          */
3830                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3831                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3832                         box_sig->param_count = 1;
3833                         box_sig->params [0] = &klass->byval_arg;
3834
3835                         if (cfg->llvm_only)
3836                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3837                         else
3838                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3839                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3840                         res->type = STACK_OBJ;
3841                         res->klass = klass;
3842                 }
3843
3844                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3845
3846                 MONO_START_BB (cfg, end_bb);
3847
3848                 return res;
3849         } else {
3850                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3851                 if (!alloc)
3852                         return NULL;
3853
3854                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3855                 return alloc;
3856         }
3857 }
3858
3859 static GHashTable* direct_icall_type_hash;
3860
3861 static gboolean
3862 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3863 {
3864         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3865         if (!direct_icalls_enabled (cfg))
3866                 return FALSE;
3867
3868         /*
3869          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3870          * Whitelist a few icalls for now.
3871          */
3872         if (!direct_icall_type_hash) {
3873                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3874
3875                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3876                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3877                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3878                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3879                 mono_memory_barrier ();
3880                 direct_icall_type_hash = h;
3881         }
3882
3883         if (cmethod->klass == mono_defaults.math_class)
3884                 return TRUE;
3885         /* No locking needed */
3886         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3887                 return TRUE;
3888         return FALSE;
3889 }
3890
3891 static gboolean
3892 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3893 {
3894         if (cmethod->klass == mono_defaults.systemtype_class) {
3895                 if (!strcmp (cmethod->name, "GetType"))
3896                         return TRUE;
3897         }
3898         return FALSE;
3899 }
3900
3901 static G_GNUC_UNUSED MonoInst*
3902 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3903 {
3904         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3905         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3906         gboolean is_i4;
3907
3908         switch (enum_type->type) {
3909         case MONO_TYPE_I8:
3910         case MONO_TYPE_U8:
3911 #if SIZEOF_REGISTER == 8
3912         case MONO_TYPE_I:
3913         case MONO_TYPE_U:
3914 #endif
3915                 is_i4 = FALSE;
3916                 break;
3917         default:
3918                 is_i4 = TRUE;
3919                 break;
3920         }
3921
3922         {
3923                 MonoInst *load, *and_, *cmp, *ceq;
3924                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3925                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3926                 int dest_reg = alloc_ireg (cfg);
3927
3928                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3929                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3930                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3931                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3932
3933                 ceq->type = STACK_I4;
3934
3935                 if (!is_i4) {
3936                         load = mono_decompose_opcode (cfg, load);
3937                         and_ = mono_decompose_opcode (cfg, and_);
3938                         cmp = mono_decompose_opcode (cfg, cmp);
3939                         ceq = mono_decompose_opcode (cfg, ceq);
3940                 }
3941
3942                 return ceq;
3943         }
3944 }
3945
3946 /*
3947  * Returns NULL and set the cfg exception on error.
3948  */
3949 static G_GNUC_UNUSED MonoInst*
3950 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3951 {
3952         MonoInst *ptr;
3953         int dreg;
3954         gpointer trampoline;
3955         MonoInst *obj, *method_ins, *tramp_ins;
3956         MonoDomain *domain;
3957         guint8 **code_slot;
3958
3959         if (virtual_ && !cfg->llvm_only) {
3960                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3961                 g_assert (invoke);
3962
3963                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3964                         return NULL;
3965         }
3966
3967         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3968         if (!obj)
3969                 return NULL;
3970
3971         /* Inline the contents of mono_delegate_ctor */
3972
3973         /* Set target field */
3974         /* Optimize away setting of NULL target */
3975         if (!MONO_INS_IS_PCONST_NULL (target)) {
3976                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target->dreg, 0);
3977                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
3978                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3979                 if (cfg->gen_write_barriers) {
3980                         dreg = alloc_preg (cfg);
3981                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
3982                         mini_emit_write_barrier (cfg, ptr, target);
3983                 }
3984         }
3985
3986         /* Set method field */
3987         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
3988         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3989
3990         /*
3991          * To avoid looking up the compiled code belonging to the target method
3992          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3993          * store it, and we fill it after the method has been compiled.
3994          */
3995         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
3996                 MonoInst *code_slot_ins;
3997
3998                 if (context_used) {
3999                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4000                 } else {
4001                         domain = mono_domain_get ();
4002                         mono_domain_lock (domain);
4003                         if (!domain_jit_info (domain)->method_code_hash)
4004                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4005                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4006                         if (!code_slot) {
4007                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4008                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4009                         }
4010                         mono_domain_unlock (domain);
4011
4012                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4013                 }
4014                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4015         }
4016
4017         if (cfg->llvm_only) {
4018                 MonoInst *args [16];
4019
4020                 if (virtual_) {
4021                         args [0] = obj;
4022                         args [1] = target;
4023                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4024                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4025                 } else {
4026                         args [0] = obj;
4027                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4028                 }
4029
4030                 return obj;
4031         }
4032
4033         if (cfg->compile_aot) {
4034                 MonoDelegateClassMethodPair *del_tramp;
4035
4036                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4037                 del_tramp->klass = klass;
4038                 del_tramp->method = context_used ? NULL : method;
4039                 del_tramp->is_virtual = virtual_;
4040                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4041         } else {
4042                 if (virtual_)
4043                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4044                 else
4045                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4046                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4047         }
4048
4049         /* Set invoke_impl field */
4050         if (virtual_) {
4051                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4052         } else {
4053                 dreg = alloc_preg (cfg);
4054                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4055                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4056
4057                 dreg = alloc_preg (cfg);
4058                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4059                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4060         }
4061
4062         dreg = alloc_preg (cfg);
4063         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4064         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4065
4066         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4067
4068         return obj;
4069 }
4070
4071 static MonoInst*
4072 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4073 {
4074         MonoJitICallInfo *info;
4075
4076         /* Need to register the icall so it gets an icall wrapper */
4077         info = mono_get_array_new_va_icall (rank);
4078
4079         cfg->flags |= MONO_CFG_HAS_VARARGS;
4080
4081         /* mono_array_new_va () needs a vararg calling convention */
4082         cfg->exception_message = g_strdup ("array-new");
4083         cfg->disable_llvm = TRUE;
4084
4085         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4086         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4087 }
4088
4089 /*
4090  * handle_constrained_gsharedvt_call:
4091  *
4092  *   Handle constrained calls where the receiver is a gsharedvt type.
4093  * Return the instruction representing the call. Set the cfg exception on failure.
4094  */
4095 static MonoInst*
4096 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4097                                                                    gboolean *ref_emit_widen)
4098 {
4099         MonoInst *ins = NULL;
4100         gboolean emit_widen = *ref_emit_widen;
4101
4102         /*
4103          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4104          * 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
4105          * pack the arguments into an array, and do the rest of the work in in an icall.
4106          */
4107         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4108                 (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)) &&
4109                 (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]))))) {
4110                 MonoInst *args [16];
4111
4112                 /*
4113                  * This case handles calls to
4114                  * - object:ToString()/Equals()/GetHashCode(),
4115                  * - System.IComparable<T>:CompareTo()
4116                  * - System.IEquatable<T>:Equals ()
4117                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4118                  */
4119
4120                 args [0] = sp [0];
4121                 if (mono_method_check_context_used (cmethod))
4122                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4123                 else
4124                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4125                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4126
4127                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4128                 if (fsig->hasthis && fsig->param_count) {
4129                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4130                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4131                         ins->dreg = alloc_preg (cfg);
4132                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4133                         MONO_ADD_INS (cfg->cbb, ins);
4134                         args [4] = ins;
4135
4136                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4137                                 int addr_reg, deref_arg_reg;
4138
4139                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4140                                 deref_arg_reg = alloc_preg (cfg);
4141                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4142                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4143
4144                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4145                                 addr_reg = ins->dreg;
4146                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4147                         } else {
4148                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4149                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4150                         }
4151                 } else {
4152                         EMIT_NEW_ICONST (cfg, args [3], 0);
4153                         EMIT_NEW_ICONST (cfg, args [4], 0);
4154                 }
4155                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4156                 emit_widen = FALSE;
4157
4158                 if (mini_is_gsharedvt_type (fsig->ret)) {
4159                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4160                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4161                         MonoInst *add;
4162
4163                         /* Unbox */
4164                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4165                         MONO_ADD_INS (cfg->cbb, add);
4166                         /* Load value */
4167                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4168                         MONO_ADD_INS (cfg->cbb, ins);
4169                         /* ins represents the call result */
4170                 }
4171         } else {
4172                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4173         }
4174
4175         *ref_emit_widen = emit_widen;
4176
4177         return ins;
4178
4179  exception_exit:
4180         return NULL;
4181 }
4182
4183 static void
4184 mono_emit_load_got_addr (MonoCompile *cfg)
4185 {
4186         MonoInst *getaddr, *dummy_use;
4187
4188         if (!cfg->got_var || cfg->got_var_allocated)
4189                 return;
4190
4191         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4192         getaddr->cil_code = cfg->header->code;
4193         getaddr->dreg = cfg->got_var->dreg;
4194
4195         /* Add it to the start of the first bblock */
4196         if (cfg->bb_entry->code) {
4197                 getaddr->next = cfg->bb_entry->code;
4198                 cfg->bb_entry->code = getaddr;
4199         }
4200         else
4201                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4202
4203         cfg->got_var_allocated = TRUE;
4204
4205         /*
4206          * Add a dummy use to keep the got_var alive, since real uses might
4207          * only be generated by the back ends.
4208          * Add it to end_bblock, so the variable's lifetime covers the whole
4209          * method.
4210          * It would be better to make the usage of the got var explicit in all
4211          * cases when the backend needs it (i.e. calls, throw etc.), so this
4212          * wouldn't be needed.
4213          */
4214         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4215         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4216 }
4217
4218 static int inline_limit;
4219 static gboolean inline_limit_inited;
4220
4221 static gboolean
4222 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4223 {
4224         MonoMethodHeaderSummary header;
4225         MonoVTable *vtable;
4226 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4227         MonoMethodSignature *sig = mono_method_signature (method);
4228         int i;
4229 #endif
4230
4231         if (cfg->disable_inline)
4232                 return FALSE;
4233         if (cfg->gsharedvt)
4234                 return FALSE;
4235
4236         if (cfg->inline_depth > 10)
4237                 return FALSE;
4238
4239         if (!mono_method_get_header_summary (method, &header))
4240                 return FALSE;
4241
4242         /*runtime, icall and pinvoke are checked by summary call*/
4243         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4244             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4245             (mono_class_is_marshalbyref (method->klass)) ||
4246             header.has_clauses)
4247                 return FALSE;
4248
4249         /* also consider num_locals? */
4250         /* Do the size check early to avoid creating vtables */
4251         if (!inline_limit_inited) {
4252                 char *inlinelimit;
4253                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4254                         inline_limit = atoi (inlinelimit);
4255                         g_free (inlinelimit);
4256                 } else
4257                         inline_limit = INLINE_LENGTH_LIMIT;
4258                 inline_limit_inited = TRUE;
4259         }
4260         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4261                 return FALSE;
4262
4263         /*
4264          * if we can initialize the class of the method right away, we do,
4265          * otherwise we don't allow inlining if the class needs initialization,
4266          * since it would mean inserting a call to mono_runtime_class_init()
4267          * inside the inlined code
4268          */
4269         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4270                 return FALSE;
4271
4272         if (!(cfg->opt & MONO_OPT_SHARED)) {
4273                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4274                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4275                         if (method->klass->has_cctor) {
4276                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4277                                 if (!vtable)
4278                                         return FALSE;
4279                                 if (!cfg->compile_aot) {
4280                                         MonoError error;
4281                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4282                                                 mono_error_cleanup (&error);
4283                                                 return FALSE;
4284                                         }
4285                                 }
4286                         }
4287                 } else if (mono_class_is_before_field_init (method->klass)) {
4288                         if (cfg->run_cctors && method->klass->has_cctor) {
4289                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4290                                 if (!method->klass->runtime_info)
4291                                         /* No vtable created yet */
4292                                         return FALSE;
4293                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4294                                 if (!vtable)
4295                                         return FALSE;
4296                                 /* This makes so that inline cannot trigger */
4297                                 /* .cctors: too many apps depend on them */
4298                                 /* running with a specific order... */
4299                                 if (! vtable->initialized)
4300                                         return FALSE;
4301                                 MonoError error;
4302                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4303                                         mono_error_cleanup (&error);
4304                                         return FALSE;
4305                                 }
4306                         }
4307                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4308                         if (!method->klass->runtime_info)
4309                                 /* No vtable created yet */
4310                                 return FALSE;
4311                         vtable = mono_class_vtable (cfg->domain, method->klass);
4312                         if (!vtable)
4313                                 return FALSE;
4314                         if (!vtable->initialized)
4315                                 return FALSE;
4316                 }
4317         } else {
4318                 /*
4319                  * If we're compiling for shared code
4320                  * the cctor will need to be run at aot method load time, for example,
4321                  * or at the end of the compilation of the inlining method.
4322                  */
4323                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4324                         return FALSE;
4325         }
4326
4327 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4328         if (mono_arch_is_soft_float ()) {
4329                 /* FIXME: */
4330                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4331                         return FALSE;
4332                 for (i = 0; i < sig->param_count; ++i)
4333                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4334                                 return FALSE;
4335         }
4336 #endif
4337
4338         if (g_list_find (cfg->dont_inline, method))
4339                 return FALSE;
4340
4341         if (mono_profiler_get_call_instrumentation_flags (method))
4342                 return FALSE;
4343
4344         return TRUE;
4345 }
4346
4347 static gboolean
4348 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4349 {
4350         if (!cfg->compile_aot) {
4351                 g_assert (vtable);
4352                 if (vtable->initialized)
4353                         return FALSE;
4354         }
4355
4356         if (mono_class_is_before_field_init (klass)) {
4357                 if (cfg->method == method)
4358                         return FALSE;
4359         }
4360
4361         if (!mono_class_needs_cctor_run (klass, method))
4362                 return FALSE;
4363
4364         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4365                 /* The initialization is already done before the method is called */
4366                 return FALSE;
4367
4368         return TRUE;
4369 }
4370
4371 MonoInst*
4372 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4373 {
4374         MonoInst *ins;
4375         guint32 size;
4376         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4377         int context_used;
4378
4379         if (mini_is_gsharedvt_variable_klass (klass)) {
4380                 size = -1;
4381         } else {
4382                 mono_class_init (klass);
4383                 size = mono_class_array_element_size (klass);
4384         }
4385
4386         mult_reg = alloc_preg (cfg);
4387         array_reg = arr->dreg;
4388         index_reg = index->dreg;
4389
4390 #if SIZEOF_REGISTER == 8
4391         /* The array reg is 64 bits but the index reg is only 32 */
4392         if (COMPILE_LLVM (cfg)) {
4393                 /*
4394                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4395                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4396                  * of OP_X86_LEA for llvm.
4397                  */
4398                 index2_reg = index_reg;
4399         } else {
4400                 index2_reg = alloc_preg (cfg);
4401                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4402         }
4403 #else
4404         if (index->type == STACK_I8) {
4405                 index2_reg = alloc_preg (cfg);
4406                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4407         } else {
4408                 index2_reg = index_reg;
4409         }
4410 #endif
4411
4412         if (bcheck)
4413                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4414
4415 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4416         if (size == 1 || size == 2 || size == 4 || size == 8) {
4417                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4418
4419                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4420                 ins->klass = mono_class_get_element_class (klass);
4421                 ins->type = STACK_MP;
4422
4423                 return ins;
4424         }
4425 #endif
4426
4427         add_reg = alloc_ireg_mp (cfg);
4428
4429         if (size == -1) {
4430                 MonoInst *rgctx_ins;
4431
4432                 /* gsharedvt */
4433                 g_assert (cfg->gshared);
4434                 context_used = mini_class_check_context_used (cfg, klass);
4435                 g_assert (context_used);
4436                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4437                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4438         } else {
4439                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4440         }
4441         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4442         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4443         ins->klass = mono_class_get_element_class (klass);
4444         ins->type = STACK_MP;
4445         MONO_ADD_INS (cfg->cbb, ins);
4446
4447         return ins;
4448 }
4449
4450 static MonoInst*
4451 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4452 {
4453         int bounds_reg = alloc_preg (cfg);
4454         int add_reg = alloc_ireg_mp (cfg);
4455         int mult_reg = alloc_preg (cfg);
4456         int mult2_reg = alloc_preg (cfg);
4457         int low1_reg = alloc_preg (cfg);
4458         int low2_reg = alloc_preg (cfg);
4459         int high1_reg = alloc_preg (cfg);
4460         int high2_reg = alloc_preg (cfg);
4461         int realidx1_reg = alloc_preg (cfg);
4462         int realidx2_reg = alloc_preg (cfg);
4463         int sum_reg = alloc_preg (cfg);
4464         int index1, index2, tmpreg;
4465         MonoInst *ins;
4466         guint32 size;
4467
4468         mono_class_init (klass);
4469         size = mono_class_array_element_size (klass);
4470
4471         index1 = index_ins1->dreg;
4472         index2 = index_ins2->dreg;
4473
4474 #if SIZEOF_REGISTER == 8
4475         /* The array reg is 64 bits but the index reg is only 32 */
4476         if (COMPILE_LLVM (cfg)) {
4477                 /* Not needed */
4478         } else {
4479                 tmpreg = alloc_preg (cfg);
4480                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4481                 index1 = tmpreg;
4482                 tmpreg = alloc_preg (cfg);
4483                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4484                 index2 = tmpreg;
4485         }
4486 #else
4487         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4488         tmpreg = -1;
4489 #endif
4490
4491         /* range checking */
4492         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4493                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4494
4495         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4496                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4497         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4498         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4499                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4500         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4501         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4502
4503         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4504                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4505         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4506         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4507                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4508         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4509         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4510
4511         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4512         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4513         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4514         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4515         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4516
4517         ins->type = STACK_MP;
4518         ins->klass = klass;
4519         MONO_ADD_INS (cfg->cbb, ins);
4520
4521         return ins;
4522 }
4523
4524 static MonoInst*
4525 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4526 {
4527         int rank;
4528         MonoInst *addr;
4529         MonoMethod *addr_method;
4530         int element_size;
4531         MonoClass *eclass = cmethod->klass->element_class;
4532
4533         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4534
4535         if (rank == 1)
4536                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4537
4538         /* emit_ldelema_2 depends on OP_LMUL */
4539         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4540                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4541         }
4542
4543         if (mini_is_gsharedvt_variable_klass (eclass))
4544                 element_size = 0;
4545         else
4546                 element_size = mono_class_array_element_size (eclass);
4547         addr_method = mono_marshal_get_array_address (rank, element_size);
4548         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4549
4550         return addr;
4551 }
4552
4553 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4554 static MonoInst*
4555 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4556 {
4557         MonoInst *addr, *store, *load;
4558         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4559
4560         /* the bounds check is already done by the callers */
4561         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4562         if (is_set) {
4563                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4564                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4565                 if (mini_type_is_reference (&eklass->byval_arg))
4566                         mini_emit_write_barrier (cfg, addr, load);
4567         } else {
4568                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4569                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4570         }
4571         return store;
4572 }
4573
4574
4575 static gboolean
4576 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4577 {
4578         return mini_type_is_reference (&klass->byval_arg);
4579 }
4580
4581 static MonoInst*
4582 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4583 {
4584         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4585                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4586                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4587                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4588                 MonoInst *iargs [3];
4589
4590                 if (!helper->slot)
4591                         mono_class_setup_vtable (obj_array);
4592                 g_assert (helper->slot);
4593
4594                 if (sp [0]->type != STACK_OBJ)
4595                         return NULL;
4596                 if (sp [2]->type != STACK_OBJ)
4597                         return NULL;
4598
4599                 iargs [2] = sp [2];
4600                 iargs [1] = sp [1];
4601                 iargs [0] = sp [0];
4602
4603                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4604         } else {
4605                 MonoInst *ins;
4606
4607                 if (mini_is_gsharedvt_variable_klass (klass)) {
4608                         MonoInst *addr;
4609
4610                         // FIXME-VT: OP_ICONST optimization
4611                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4612                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4613                         ins->opcode = OP_STOREV_MEMBASE;
4614                 } else if (sp [1]->opcode == OP_ICONST) {
4615                         int array_reg = sp [0]->dreg;
4616                         int index_reg = sp [1]->dreg;
4617                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4618
4619                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4620                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4621
4622                         if (safety_checks)
4623                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4624                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4625                 } else {
4626                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4627                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4628                         if (generic_class_is_reference_type (cfg, klass))
4629                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4630                 }
4631                 return ins;
4632         }
4633 }
4634
4635 static MonoInst*
4636 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4637 {
4638         MonoClass *eklass;
4639
4640         if (is_set)
4641                 eklass = mono_class_from_mono_type (fsig->params [2]);
4642         else
4643                 eklass = mono_class_from_mono_type (fsig->ret);
4644
4645         if (is_set) {
4646                 return emit_array_store (cfg, eklass, args, FALSE);
4647         } else {
4648                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4649                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4650                 return ins;
4651         }
4652 }
4653
4654 static gboolean
4655 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4656 {
4657         uint32_t align;
4658         int param_size, return_size;
4659
4660         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4661         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4662
4663         if (cfg->verbose_level > 3)
4664                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4665
4666         //Don't allow mixing reference types with value types
4667         if (param_klass->valuetype != return_klass->valuetype) {
4668                 if (cfg->verbose_level > 3)
4669                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4670                 return FALSE;
4671         }
4672
4673         if (!param_klass->valuetype) {
4674                 if (cfg->verbose_level > 3)
4675                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4676                 return TRUE;
4677         }
4678
4679         //That are blitable
4680         if (param_klass->has_references || return_klass->has_references)
4681                 return FALSE;
4682
4683         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4684         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4685                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4686                         if (cfg->verbose_level > 3)
4687                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4688                 return FALSE;
4689         }
4690
4691         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4692                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4693                 if (cfg->verbose_level > 3)
4694                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4695                 return FALSE;
4696         }
4697
4698         param_size = mono_class_value_size (param_klass, &align);
4699         return_size = mono_class_value_size (return_klass, &align);
4700
4701         //We can do it if sizes match
4702         if (param_size == return_size) {
4703                 if (cfg->verbose_level > 3)
4704                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4705                 return TRUE;
4706         }
4707
4708         //No simple way to handle struct if sizes don't match
4709         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4710                 if (cfg->verbose_level > 3)
4711                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4712                 return FALSE;
4713         }
4714
4715         /*
4716          * Same reg size category.
4717          * A quick note on why we don't require widening here.
4718          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4719          *
4720          * Since the source value comes from a function argument, the JIT will already have
4721          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4722          */
4723         if (param_size <= 4 && return_size <= 4) {
4724                 if (cfg->verbose_level > 3)
4725                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4726                 return TRUE;
4727         }
4728
4729         return FALSE;
4730 }
4731
4732 static MonoInst*
4733 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4734 {
4735         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4736         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4737
4738         if (mini_is_gsharedvt_variable_type (fsig->ret))
4739                 return NULL;
4740
4741         //Valuetypes that are semantically equivalent or numbers than can be widened to
4742         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4743                 return args [0];
4744
4745         //Arrays of valuetypes that are semantically equivalent
4746         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4747                 return args [0];
4748
4749         return NULL;
4750 }
4751
4752 static MonoInst*
4753 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4754 {
4755 #ifdef MONO_ARCH_SIMD_INTRINSICS
4756         MonoInst *ins = NULL;
4757
4758         if (cfg->opt & MONO_OPT_SIMD) {
4759                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4760                 if (ins)
4761                         return ins;
4762         }
4763 #endif
4764
4765         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4766 }
4767
4768 MonoInst*
4769 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4770 {
4771         MonoInst *ins = NULL;
4772         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4773         MONO_ADD_INS (cfg->cbb, ins);
4774         ins->backend.memory_barrier_kind = kind;
4775
4776         return ins;
4777 }
4778
4779 static MonoInst*
4780 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4781 {
4782         MonoInst *ins = NULL;
4783         int opcode = 0;
4784
4785         /* The LLVM backend supports these intrinsics */
4786         if (cmethod->klass == mono_defaults.math_class) {
4787                 if (strcmp (cmethod->name, "Sin") == 0) {
4788                         opcode = OP_SIN;
4789                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4790                         opcode = OP_COS;
4791                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4792                         opcode = OP_SQRT;
4793                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4794                         opcode = OP_ABS;
4795                 }
4796
4797                 if (opcode && fsig->param_count == 1) {
4798                         MONO_INST_NEW (cfg, ins, opcode);
4799                         ins->type = STACK_R8;
4800                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4801                         ins->sreg1 = args [0]->dreg;
4802                         MONO_ADD_INS (cfg->cbb, ins);
4803                 }
4804
4805                 opcode = 0;
4806                 if (cfg->opt & MONO_OPT_CMOV) {
4807                         if (strcmp (cmethod->name, "Min") == 0) {
4808                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4809                                         opcode = OP_IMIN;
4810                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4811                                         opcode = OP_IMIN_UN;
4812                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4813                                         opcode = OP_LMIN;
4814                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4815                                         opcode = OP_LMIN_UN;
4816                         } else if (strcmp (cmethod->name, "Max") == 0) {
4817                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4818                                         opcode = OP_IMAX;
4819                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4820                                         opcode = OP_IMAX_UN;
4821                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4822                                         opcode = OP_LMAX;
4823                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4824                                         opcode = OP_LMAX_UN;
4825                         }
4826                 }
4827
4828                 if (opcode && fsig->param_count == 2) {
4829                         MONO_INST_NEW (cfg, ins, opcode);
4830                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4831                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4832                         ins->sreg1 = args [0]->dreg;
4833                         ins->sreg2 = args [1]->dreg;
4834                         MONO_ADD_INS (cfg->cbb, ins);
4835                 }
4836         }
4837
4838         return ins;
4839 }
4840
4841 static MonoInst*
4842 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4843 {
4844         if (cmethod->klass == mono_defaults.array_class) {
4845                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4846                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4847                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4848                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4849                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4850                         return emit_array_unsafe_mov (cfg, fsig, args);
4851         }
4852
4853         return NULL;
4854 }
4855
4856
4857 static gboolean
4858 mono_type_is_native_blittable (MonoType *t)
4859 {
4860         if (MONO_TYPE_IS_REFERENCE (t))
4861                 return FALSE;
4862
4863         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4864                 return TRUE;
4865
4866         MonoClass *klass = mono_class_from_mono_type (t);
4867
4868         //MonoClass::blitable depends on mono_class_setup_fields being done.
4869         mono_class_setup_fields (klass);
4870         if (!klass->blittable)
4871                 return FALSE;
4872
4873         // If the native marshal size is different we can't convert PtrToStructure to a type load
4874         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4875                 return FALSE;
4876
4877         return TRUE;
4878 }
4879
4880
4881 static MonoInst*
4882 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4883 {
4884         MonoInst *ins = NULL;
4885         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4886
4887         if (cmethod->klass == mono_defaults.string_class) {
4888                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4889                         int dreg = alloc_ireg (cfg);
4890                         int index_reg = alloc_preg (cfg);
4891                         int add_reg = alloc_preg (cfg);
4892
4893 #if SIZEOF_REGISTER == 8
4894                         if (COMPILE_LLVM (cfg)) {
4895                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4896                         } else {
4897                                 /* The array reg is 64 bits but the index reg is only 32 */
4898                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4899                         }
4900 #else
4901                         index_reg = args [1]->dreg;
4902 #endif
4903                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4904
4905 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4906                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4907                         add_reg = ins->dreg;
4908                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4909                                                                    add_reg, 0);
4910 #else
4911                         int mult_reg = alloc_preg (cfg);
4912                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4913                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4914                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4915                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4916 #endif
4917                         type_from_op (cfg, ins, NULL, NULL);
4918                         return ins;
4919                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4920                         int dreg = alloc_ireg (cfg);
4921                         /* Decompose later to allow more optimizations */
4922                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4923                         ins->type = STACK_I4;
4924                         ins->flags |= MONO_INST_FAULT;
4925                         cfg->cbb->has_array_access = TRUE;
4926                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4927
4928                         return ins;
4929                 } else
4930                         return NULL;
4931         } else if (cmethod->klass == mono_defaults.object_class) {
4932                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4933                         int dreg = alloc_ireg_ref (cfg);
4934                         int vt_reg = alloc_preg (cfg);
4935                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4936                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4937                         type_from_op (cfg, ins, NULL, NULL);
4938
4939                         return ins;
4940                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4941                         int dreg = alloc_ireg (cfg);
4942                         int t1 = alloc_ireg (cfg);
4943
4944                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4945                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4946                         ins->type = STACK_I4;
4947
4948                         return ins;
4949                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4950                         MONO_INST_NEW (cfg, ins, OP_NOP);
4951                         MONO_ADD_INS (cfg->cbb, ins);
4952                         return ins;
4953                 } else
4954                         return NULL;
4955         } else if (cmethod->klass == mono_defaults.array_class) {
4956                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4957                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4958                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4959                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4960
4961 #ifndef MONO_BIG_ARRAYS
4962                 /*
4963                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4964                  * Array methods.
4965                  */
4966                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4967                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4968                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4969                         int dreg = alloc_ireg (cfg);
4970                         int bounds_reg = alloc_ireg_mp (cfg);
4971                         MonoBasicBlock *end_bb, *szarray_bb;
4972                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4973
4974                         NEW_BBLOCK (cfg, end_bb);
4975                         NEW_BBLOCK (cfg, szarray_bb);
4976
4977                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4978                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4979                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4980                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
4981                         /* Non-szarray case */
4982                         if (get_length)
4983                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4984                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4985                         else
4986                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4987                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4988                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4989                         MONO_START_BB (cfg, szarray_bb);
4990                         /* Szarray case */
4991                         if (get_length)
4992                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4993                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
4994                         else
4995                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4996                         MONO_START_BB (cfg, end_bb);
4997
4998                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
4999                         ins->type = STACK_I4;
5000
5001                         return ins;
5002                 }
5003 #endif
5004
5005                 if (cmethod->name [0] != 'g')
5006                         return NULL;
5007
5008                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5009                         int dreg = alloc_ireg (cfg);
5010                         int vtable_reg = alloc_preg (cfg);
5011                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5012                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5013                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5014                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5015                         type_from_op (cfg, ins, NULL, NULL);
5016
5017                         return ins;
5018                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5019                         int dreg = alloc_ireg (cfg);
5020
5021                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5022                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5023                         type_from_op (cfg, ins, NULL, NULL);
5024
5025                         return ins;
5026                 } else
5027                         return NULL;
5028         } else if (cmethod->klass == runtime_helpers_class) {
5029                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5030                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5031                         return ins;
5032                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5033                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5034                         g_assert (ctx);
5035                         g_assert (ctx->method_inst);
5036                         g_assert (ctx->method_inst->type_argc == 1);
5037                         MonoType *arg_type = ctx->method_inst->type_argv [0];
5038                         MonoType *t;
5039                         MonoClass *klass;
5040
5041                         ins = NULL;
5042
5043                         /* Resolve the argument class as possible so we can handle common cases fast */
5044                         t = mini_get_underlying_type (arg_type);
5045                         klass = mono_class_from_mono_type (t);
5046                         mono_class_init (klass);
5047                         if (MONO_TYPE_IS_REFERENCE (t))
5048                                 EMIT_NEW_ICONST (cfg, ins, 1);
5049                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5050                                 EMIT_NEW_ICONST (cfg, ins, 0);
5051                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5052                                 EMIT_NEW_ICONST (cfg, ins, 1);
5053                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5054                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5055                         else {
5056                                 g_assert (cfg->gshared);
5057
5058                                 /* Have to use the original argument class here */
5059                                 MonoClass *arg_class = mono_class_from_mono_type (arg_type);
5060                                 int context_used = mini_class_check_context_used (cfg, arg_class);
5061
5062                                 /* This returns 1 or 2 */
5063                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, arg_class, MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5064                                 int dreg = alloc_ireg (cfg);
5065                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5066                         }
5067
5068                         return ins;
5069                 } else
5070                         return NULL;
5071         } else if (cmethod->klass == mono_defaults.monitor_class) {
5072                 gboolean is_enter = FALSE;
5073                 gboolean is_v4 = FALSE;
5074
5075                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5076                         is_enter = TRUE;
5077                         is_v4 = TRUE;
5078                 }
5079                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5080                         is_enter = TRUE;
5081
5082                 if (is_enter) {
5083                         /*
5084                          * To make async stack traces work, icalls which can block should have a wrapper.
5085                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5086                          */
5087                         MonoBasicBlock *end_bb;
5088
5089                         NEW_BBLOCK (cfg, end_bb);
5090
5091                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5092                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5093                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5094                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5095                         MONO_START_BB (cfg, end_bb);
5096                         return ins;
5097                 }
5098         } else if (cmethod->klass == mono_defaults.thread_class) {
5099                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5100                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5101                         MONO_ADD_INS (cfg->cbb, ins);
5102                         return ins;
5103                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5104                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5105                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5106                         guint32 opcode = 0;
5107                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5108
5109                         if (fsig->params [0]->type == MONO_TYPE_I1)
5110                                 opcode = OP_LOADI1_MEMBASE;
5111                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5112                                 opcode = OP_LOADU1_MEMBASE;
5113                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5114                                 opcode = OP_LOADI2_MEMBASE;
5115                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5116                                 opcode = OP_LOADU2_MEMBASE;
5117                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5118                                 opcode = OP_LOADI4_MEMBASE;
5119                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5120                                 opcode = OP_LOADU4_MEMBASE;
5121                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5122                                 opcode = OP_LOADI8_MEMBASE;
5123                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5124                                 opcode = OP_LOADR4_MEMBASE;
5125                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5126                                 opcode = OP_LOADR8_MEMBASE;
5127                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5128                                 opcode = OP_LOAD_MEMBASE;
5129
5130                         if (opcode) {
5131                                 MONO_INST_NEW (cfg, ins, opcode);
5132                                 ins->inst_basereg = args [0]->dreg;
5133                                 ins->inst_offset = 0;
5134                                 MONO_ADD_INS (cfg->cbb, ins);
5135
5136                                 switch (fsig->params [0]->type) {
5137                                 case MONO_TYPE_I1:
5138                                 case MONO_TYPE_U1:
5139                                 case MONO_TYPE_I2:
5140                                 case MONO_TYPE_U2:
5141                                 case MONO_TYPE_I4:
5142                                 case MONO_TYPE_U4:
5143                                         ins->dreg = mono_alloc_ireg (cfg);
5144                                         ins->type = STACK_I4;
5145                                         break;
5146                                 case MONO_TYPE_I8:
5147                                 case MONO_TYPE_U8:
5148                                         ins->dreg = mono_alloc_lreg (cfg);
5149                                         ins->type = STACK_I8;
5150                                         break;
5151                                 case MONO_TYPE_I:
5152                                 case MONO_TYPE_U:
5153                                         ins->dreg = mono_alloc_ireg (cfg);
5154 #if SIZEOF_REGISTER == 8
5155                                         ins->type = STACK_I8;
5156 #else
5157                                         ins->type = STACK_I4;
5158 #endif
5159                                         break;
5160                                 case MONO_TYPE_R4:
5161                                 case MONO_TYPE_R8:
5162                                         ins->dreg = mono_alloc_freg (cfg);
5163                                         ins->type = STACK_R8;
5164                                         break;
5165                                 default:
5166                                         g_assert (mini_type_is_reference (fsig->params [0]));
5167                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5168                                         ins->type = STACK_OBJ;
5169                                         break;
5170                                 }
5171
5172                                 if (opcode == OP_LOADI8_MEMBASE)
5173                                         ins = mono_decompose_opcode (cfg, ins);
5174
5175                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5176
5177                                 return ins;
5178                         }
5179                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5180                         guint32 opcode = 0;
5181                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5182
5183                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5184                                 opcode = OP_STOREI1_MEMBASE_REG;
5185                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5186                                 opcode = OP_STOREI2_MEMBASE_REG;
5187                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5188                                 opcode = OP_STOREI4_MEMBASE_REG;
5189                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5190                                 opcode = OP_STOREI8_MEMBASE_REG;
5191                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5192                                 opcode = OP_STORER4_MEMBASE_REG;
5193                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5194                                 opcode = OP_STORER8_MEMBASE_REG;
5195                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5196                                 opcode = OP_STORE_MEMBASE_REG;
5197
5198                         if (opcode) {
5199                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5200
5201                                 MONO_INST_NEW (cfg, ins, opcode);
5202                                 ins->sreg1 = args [1]->dreg;
5203                                 ins->inst_destbasereg = args [0]->dreg;
5204                                 ins->inst_offset = 0;
5205                                 MONO_ADD_INS (cfg->cbb, ins);
5206
5207                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5208                                         ins = mono_decompose_opcode (cfg, ins);
5209
5210                                 return ins;
5211                         }
5212                 }
5213         } else if (cmethod->klass->image == mono_defaults.corlib &&
5214                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5215                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5216                 ins = NULL;
5217
5218 #if SIZEOF_REGISTER == 8
5219                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5220                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5221                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5222                                 ins->dreg = mono_alloc_preg (cfg);
5223                                 ins->sreg1 = args [0]->dreg;
5224                                 ins->type = STACK_I8;
5225                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5226                                 MONO_ADD_INS (cfg->cbb, ins);
5227                         } else {
5228                                 MonoInst *load_ins;
5229
5230                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5231
5232                                 /* 64 bit reads are already atomic */
5233                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5234                                 load_ins->dreg = mono_alloc_preg (cfg);
5235                                 load_ins->inst_basereg = args [0]->dreg;
5236                                 load_ins->inst_offset = 0;
5237                                 load_ins->type = STACK_I8;
5238                                 MONO_ADD_INS (cfg->cbb, load_ins);
5239
5240                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5241
5242                                 ins = load_ins;
5243                         }
5244                 }
5245 #endif
5246
5247                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5248                         MonoInst *ins_iconst;
5249                         guint32 opcode = 0;
5250
5251                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5252                                 opcode = OP_ATOMIC_ADD_I4;
5253                                 cfg->has_atomic_add_i4 = TRUE;
5254                         }
5255 #if SIZEOF_REGISTER == 8
5256                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5257                                 opcode = OP_ATOMIC_ADD_I8;
5258 #endif
5259                         if (opcode) {
5260                                 if (!mono_arch_opcode_supported (opcode))
5261                                         return NULL;
5262                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5263                                 ins_iconst->inst_c0 = 1;
5264                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5265                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5266
5267                                 MONO_INST_NEW (cfg, ins, opcode);
5268                                 ins->dreg = mono_alloc_ireg (cfg);
5269                                 ins->inst_basereg = args [0]->dreg;
5270                                 ins->inst_offset = 0;
5271                                 ins->sreg2 = ins_iconst->dreg;
5272                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5273                                 MONO_ADD_INS (cfg->cbb, ins);
5274                         }
5275                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5276                         MonoInst *ins_iconst;
5277                         guint32 opcode = 0;
5278
5279                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5280                                 opcode = OP_ATOMIC_ADD_I4;
5281                                 cfg->has_atomic_add_i4 = TRUE;
5282                         }
5283 #if SIZEOF_REGISTER == 8
5284                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5285                                 opcode = OP_ATOMIC_ADD_I8;
5286 #endif
5287                         if (opcode) {
5288                                 if (!mono_arch_opcode_supported (opcode))
5289                                         return NULL;
5290                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5291                                 ins_iconst->inst_c0 = -1;
5292                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5293                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5294
5295                                 MONO_INST_NEW (cfg, ins, opcode);
5296                                 ins->dreg = mono_alloc_ireg (cfg);
5297                                 ins->inst_basereg = args [0]->dreg;
5298                                 ins->inst_offset = 0;
5299                                 ins->sreg2 = ins_iconst->dreg;
5300                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5301                                 MONO_ADD_INS (cfg->cbb, ins);
5302                         }
5303                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5304                         guint32 opcode = 0;
5305
5306                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5307                                 opcode = OP_ATOMIC_ADD_I4;
5308                                 cfg->has_atomic_add_i4 = TRUE;
5309                         }
5310 #if SIZEOF_REGISTER == 8
5311                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5312                                 opcode = OP_ATOMIC_ADD_I8;
5313 #endif
5314                         if (opcode) {
5315                                 if (!mono_arch_opcode_supported (opcode))
5316                                         return NULL;
5317                                 MONO_INST_NEW (cfg, ins, opcode);
5318                                 ins->dreg = mono_alloc_ireg (cfg);
5319                                 ins->inst_basereg = args [0]->dreg;
5320                                 ins->inst_offset = 0;
5321                                 ins->sreg2 = args [1]->dreg;
5322                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5323                                 MONO_ADD_INS (cfg->cbb, ins);
5324                         }
5325                 }
5326                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5327                         MonoInst *f2i = NULL, *i2f;
5328                         guint32 opcode, f2i_opcode, i2f_opcode;
5329                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5330                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5331
5332                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5333                             fsig->params [0]->type == MONO_TYPE_R4) {
5334                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5335                                 f2i_opcode = OP_MOVE_F_TO_I4;
5336                                 i2f_opcode = OP_MOVE_I4_TO_F;
5337                                 cfg->has_atomic_exchange_i4 = TRUE;
5338                         }
5339 #if SIZEOF_REGISTER == 8
5340                         else if (is_ref ||
5341                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5342                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5343                                  fsig->params [0]->type == MONO_TYPE_I) {
5344                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5345                                 f2i_opcode = OP_MOVE_F_TO_I8;
5346                                 i2f_opcode = OP_MOVE_I8_TO_F;
5347                         }
5348 #else
5349                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5350                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5351                                 cfg->has_atomic_exchange_i4 = TRUE;
5352                         }
5353 #endif
5354                         else
5355                                 return NULL;
5356
5357                         if (!mono_arch_opcode_supported (opcode))
5358                                 return NULL;
5359
5360                         if (is_float) {
5361                                 /* TODO: Decompose these opcodes instead of bailing here. */
5362                                 if (COMPILE_SOFT_FLOAT (cfg))
5363                                         return NULL;
5364
5365                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5366                                 f2i->dreg = mono_alloc_ireg (cfg);
5367                                 f2i->sreg1 = args [1]->dreg;
5368                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5369                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5370                                 MONO_ADD_INS (cfg->cbb, f2i);
5371                         }
5372
5373                         MONO_INST_NEW (cfg, ins, opcode);
5374                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5375                         ins->inst_basereg = args [0]->dreg;
5376                         ins->inst_offset = 0;
5377                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5378                         MONO_ADD_INS (cfg->cbb, ins);
5379
5380                         switch (fsig->params [0]->type) {
5381                         case MONO_TYPE_I4:
5382                                 ins->type = STACK_I4;
5383                                 break;
5384                         case MONO_TYPE_I8:
5385                                 ins->type = STACK_I8;
5386                                 break;
5387                         case MONO_TYPE_I:
5388 #if SIZEOF_REGISTER == 8
5389                                 ins->type = STACK_I8;
5390 #else
5391                                 ins->type = STACK_I4;
5392 #endif
5393                                 break;
5394                         case MONO_TYPE_R4:
5395                         case MONO_TYPE_R8:
5396                                 ins->type = STACK_R8;
5397                                 break;
5398                         default:
5399                                 g_assert (mini_type_is_reference (fsig->params [0]));
5400                                 ins->type = STACK_OBJ;
5401                                 break;
5402                         }
5403
5404                         if (is_float) {
5405                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5406                                 i2f->dreg = mono_alloc_freg (cfg);
5407                                 i2f->sreg1 = ins->dreg;
5408                                 i2f->type = STACK_R8;
5409                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5410                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5411                                 MONO_ADD_INS (cfg->cbb, i2f);
5412
5413                                 ins = i2f;
5414                         }
5415
5416                         if (cfg->gen_write_barriers && is_ref)
5417                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5418                 }
5419                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5420                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5421                         guint32 opcode, f2i_opcode, i2f_opcode;
5422                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5423                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5424
5425                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5426                             fsig->params [1]->type == MONO_TYPE_R4) {
5427                                 opcode = OP_ATOMIC_CAS_I4;
5428                                 f2i_opcode = OP_MOVE_F_TO_I4;
5429                                 i2f_opcode = OP_MOVE_I4_TO_F;
5430                                 cfg->has_atomic_cas_i4 = TRUE;
5431                         }
5432 #if SIZEOF_REGISTER == 8
5433                         else if (is_ref ||
5434                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5435                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5436                                  fsig->params [1]->type == MONO_TYPE_I) {
5437                                 opcode = OP_ATOMIC_CAS_I8;
5438                                 f2i_opcode = OP_MOVE_F_TO_I8;
5439                                 i2f_opcode = OP_MOVE_I8_TO_F;
5440                         }
5441 #else
5442                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5443                                 opcode = OP_ATOMIC_CAS_I4;
5444                                 cfg->has_atomic_cas_i4 = TRUE;
5445                         }
5446 #endif
5447                         else
5448                                 return NULL;
5449
5450                         if (!mono_arch_opcode_supported (opcode))
5451                                 return NULL;
5452
5453                         if (is_float) {
5454                                 /* TODO: Decompose these opcodes instead of bailing here. */
5455                                 if (COMPILE_SOFT_FLOAT (cfg))
5456                                         return NULL;
5457
5458                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5459                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5460                                 f2i_new->sreg1 = args [1]->dreg;
5461                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5462                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5463                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5464
5465                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5466                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5467                                 f2i_cmp->sreg1 = args [2]->dreg;
5468                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5469                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5470                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5471                         }
5472
5473                         MONO_INST_NEW (cfg, ins, opcode);
5474                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5475                         ins->sreg1 = args [0]->dreg;
5476                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5477                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5478                         MONO_ADD_INS (cfg->cbb, ins);
5479
5480                         switch (fsig->params [1]->type) {
5481                         case MONO_TYPE_I4:
5482                                 ins->type = STACK_I4;
5483                                 break;
5484                         case MONO_TYPE_I8:
5485                                 ins->type = STACK_I8;
5486                                 break;
5487                         case MONO_TYPE_I:
5488 #if SIZEOF_REGISTER == 8
5489                                 ins->type = STACK_I8;
5490 #else
5491                                 ins->type = STACK_I4;
5492 #endif
5493                                 break;
5494                         case MONO_TYPE_R4:
5495                                 ins->type = cfg->r4_stack_type;
5496                                 break;
5497                         case MONO_TYPE_R8:
5498                                 ins->type = STACK_R8;
5499                                 break;
5500                         default:
5501                                 g_assert (mini_type_is_reference (fsig->params [1]));
5502                                 ins->type = STACK_OBJ;
5503                                 break;
5504                         }
5505
5506                         if (is_float) {
5507                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5508                                 i2f->dreg = mono_alloc_freg (cfg);
5509                                 i2f->sreg1 = ins->dreg;
5510                                 i2f->type = STACK_R8;
5511                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5512                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5513                                 MONO_ADD_INS (cfg->cbb, i2f);
5514
5515                                 ins = i2f;
5516                         }
5517
5518                         if (cfg->gen_write_barriers && is_ref)
5519                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5520                 }
5521                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5522                          fsig->params [1]->type == MONO_TYPE_I4) {
5523                         MonoInst *cmp, *ceq;
5524
5525                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5526                                 return NULL;
5527
5528                         /* int32 r = CAS (location, value, comparand); */
5529                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5530                         ins->dreg = alloc_ireg (cfg);
5531                         ins->sreg1 = args [0]->dreg;
5532                         ins->sreg2 = args [1]->dreg;
5533                         ins->sreg3 = args [2]->dreg;
5534                         ins->type = STACK_I4;
5535                         MONO_ADD_INS (cfg->cbb, ins);
5536
5537                         /* bool result = r == comparand; */
5538                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5539                         cmp->sreg1 = ins->dreg;
5540                         cmp->sreg2 = args [2]->dreg;
5541                         cmp->type = STACK_I4;
5542                         MONO_ADD_INS (cfg->cbb, cmp);
5543
5544                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5545                         ceq->dreg = alloc_ireg (cfg);
5546                         ceq->type = STACK_I4;
5547                         MONO_ADD_INS (cfg->cbb, ceq);
5548
5549                         /* *success = result; */
5550                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5551
5552                         cfg->has_atomic_cas_i4 = TRUE;
5553                 }
5554                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5555                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5556
5557                 if (ins)
5558                         return ins;
5559         } else if (cmethod->klass->image == mono_defaults.corlib &&
5560                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5561                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5562                 ins = NULL;
5563
5564                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5565                         guint32 opcode = 0;
5566                         MonoType *t = fsig->params [0];
5567                         gboolean is_ref;
5568                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5569
5570                         g_assert (t->byref);
5571                         /* t is a byref type, so the reference check is more complicated */
5572                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5573                         if (t->type == MONO_TYPE_I1)
5574                                 opcode = OP_ATOMIC_LOAD_I1;
5575                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5576                                 opcode = OP_ATOMIC_LOAD_U1;
5577                         else if (t->type == MONO_TYPE_I2)
5578                                 opcode = OP_ATOMIC_LOAD_I2;
5579                         else if (t->type == MONO_TYPE_U2)
5580                                 opcode = OP_ATOMIC_LOAD_U2;
5581                         else if (t->type == MONO_TYPE_I4)
5582                                 opcode = OP_ATOMIC_LOAD_I4;
5583                         else if (t->type == MONO_TYPE_U4)
5584                                 opcode = OP_ATOMIC_LOAD_U4;
5585                         else if (t->type == MONO_TYPE_R4)
5586                                 opcode = OP_ATOMIC_LOAD_R4;
5587                         else if (t->type == MONO_TYPE_R8)
5588                                 opcode = OP_ATOMIC_LOAD_R8;
5589 #if SIZEOF_REGISTER == 8
5590                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5591                                 opcode = OP_ATOMIC_LOAD_I8;
5592                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5593                                 opcode = OP_ATOMIC_LOAD_U8;
5594 #else
5595                         else if (t->type == MONO_TYPE_I)
5596                                 opcode = OP_ATOMIC_LOAD_I4;
5597                         else if (is_ref || t->type == MONO_TYPE_U)
5598                                 opcode = OP_ATOMIC_LOAD_U4;
5599 #endif
5600
5601                         if (opcode) {
5602                                 if (!mono_arch_opcode_supported (opcode))
5603                                         return NULL;
5604
5605                                 MONO_INST_NEW (cfg, ins, opcode);
5606                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5607                                 ins->sreg1 = args [0]->dreg;
5608                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5609                                 MONO_ADD_INS (cfg->cbb, ins);
5610
5611                                 switch (t->type) {
5612                                 case MONO_TYPE_BOOLEAN:
5613                                 case MONO_TYPE_I1:
5614                                 case MONO_TYPE_U1:
5615                                 case MONO_TYPE_I2:
5616                                 case MONO_TYPE_U2:
5617                                 case MONO_TYPE_I4:
5618                                 case MONO_TYPE_U4:
5619                                         ins->type = STACK_I4;
5620                                         break;
5621                                 case MONO_TYPE_I8:
5622                                 case MONO_TYPE_U8:
5623                                         ins->type = STACK_I8;
5624                                         break;
5625                                 case MONO_TYPE_I:
5626                                 case MONO_TYPE_U:
5627 #if SIZEOF_REGISTER == 8
5628                                         ins->type = STACK_I8;
5629 #else
5630                                         ins->type = STACK_I4;
5631 #endif
5632                                         break;
5633                                 case MONO_TYPE_R4:
5634                                         ins->type = cfg->r4_stack_type;
5635                                         break;
5636                                 case MONO_TYPE_R8:
5637                                         ins->type = STACK_R8;
5638                                         break;
5639                                 default:
5640                                         g_assert (is_ref);
5641                                         ins->type = STACK_OBJ;
5642                                         break;
5643                                 }
5644                         }
5645                 }
5646
5647                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5648                         guint32 opcode = 0;
5649                         MonoType *t = fsig->params [0];
5650                         gboolean is_ref;
5651
5652                         g_assert (t->byref);
5653                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5654                         if (t->type == MONO_TYPE_I1)
5655                                 opcode = OP_ATOMIC_STORE_I1;
5656                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5657                                 opcode = OP_ATOMIC_STORE_U1;
5658                         else if (t->type == MONO_TYPE_I2)
5659                                 opcode = OP_ATOMIC_STORE_I2;
5660                         else if (t->type == MONO_TYPE_U2)
5661                                 opcode = OP_ATOMIC_STORE_U2;
5662                         else if (t->type == MONO_TYPE_I4)
5663                                 opcode = OP_ATOMIC_STORE_I4;
5664                         else if (t->type == MONO_TYPE_U4)
5665                                 opcode = OP_ATOMIC_STORE_U4;
5666                         else if (t->type == MONO_TYPE_R4)
5667                                 opcode = OP_ATOMIC_STORE_R4;
5668                         else if (t->type == MONO_TYPE_R8)
5669                                 opcode = OP_ATOMIC_STORE_R8;
5670 #if SIZEOF_REGISTER == 8
5671                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5672                                 opcode = OP_ATOMIC_STORE_I8;
5673                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5674                                 opcode = OP_ATOMIC_STORE_U8;
5675 #else
5676                         else if (t->type == MONO_TYPE_I)
5677                                 opcode = OP_ATOMIC_STORE_I4;
5678                         else if (is_ref || t->type == MONO_TYPE_U)
5679                                 opcode = OP_ATOMIC_STORE_U4;
5680 #endif
5681
5682                         if (opcode) {
5683                                 if (!mono_arch_opcode_supported (opcode))
5684                                         return NULL;
5685
5686                                 MONO_INST_NEW (cfg, ins, opcode);
5687                                 ins->dreg = args [0]->dreg;
5688                                 ins->sreg1 = args [1]->dreg;
5689                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5690                                 MONO_ADD_INS (cfg->cbb, ins);
5691
5692                                 if (cfg->gen_write_barriers && is_ref)
5693                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5694                         }
5695                 }
5696
5697                 if (ins)
5698                         return ins;
5699         } else if (cmethod->klass->image == mono_defaults.corlib &&
5700                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5701                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5702                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5703                         if (mini_should_insert_breakpoint (cfg->method)) {
5704                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5705                         } else {
5706                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5707                                 MONO_ADD_INS (cfg->cbb, ins);
5708                         }
5709                         return ins;
5710                 }
5711         } else if (cmethod->klass->image == mono_defaults.corlib &&
5712                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5713                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5714                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5715 #ifdef TARGET_WIN32
5716                         EMIT_NEW_ICONST (cfg, ins, 1);
5717 #else
5718                         EMIT_NEW_ICONST (cfg, ins, 0);
5719 #endif
5720                 }
5721         } else if (cmethod->klass->image == mono_defaults.corlib &&
5722                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5723                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5724                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5725                         /* No stack walks are currently available, so implement this as an intrinsic */
5726                         MonoInst *assembly_ins;
5727
5728                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5729                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5730                         return ins;
5731                 }
5732         } else if (cmethod->klass->image == mono_defaults.corlib &&
5733                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5734                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5735                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5736                         /* No stack walks are currently available, so implement this as an intrinsic */
5737                         MonoInst *method_ins;
5738                         MonoMethod *declaring = cfg->method;
5739
5740                         /* This returns the declaring generic method */
5741                         if (declaring->is_inflated)
5742                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5743                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5744                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5745                         cfg->no_inline = TRUE;
5746                         if (cfg->method != cfg->current_method)
5747                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5748                         return ins;
5749                 }
5750         } else if (cmethod->klass == mono_defaults.math_class) {
5751                 /*
5752                  * There is general branchless code for Min/Max, but it does not work for
5753                  * all inputs:
5754                  * http://everything2.com/?node_id=1051618
5755                  */
5756         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5757                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5758                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5759                 ins->dreg = alloc_preg (cfg);
5760                 ins->type = STACK_I4;
5761                 MONO_ADD_INS (cfg->cbb, ins);
5762                 return ins;
5763         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5764                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5765                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5766                                 !strcmp (cmethod->klass->name, "Selector")) ||
5767                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5768                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5769                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5770                                 !strcmp (cmethod->klass->name, "Selector"))
5771                            ) {
5772                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5773                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5774                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5775                     cfg->compile_aot) {
5776                         MonoInst *pi;
5777                         MonoJumpInfoToken *ji;
5778                         char *s;
5779
5780                         if (args [0]->opcode == OP_GOT_ENTRY) {
5781                                 pi = (MonoInst *)args [0]->inst_p1;
5782                                 g_assert (pi->opcode == OP_PATCH_INFO);
5783                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5784                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5785                         } else {
5786                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5787                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5788                         }
5789
5790                         NULLIFY_INS (args [0]);
5791
5792                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5793                         return_val_if_nok (&cfg->error, NULL);
5794
5795                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5796                         ins->dreg = mono_alloc_ireg (cfg);
5797                         // FIXME: Leaks
5798                         ins->inst_p0 = s;
5799                         MONO_ADD_INS (cfg->cbb, ins);
5800                         return ins;
5801                 }
5802         } else if (cmethod->klass->image == mono_defaults.corlib &&
5803                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5804                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5805                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5806                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5807                                 cmethod->is_inflated &&
5808                                 fsig->param_count == 1 &&
5809                                 !mini_method_check_context_used (cfg, cmethod)) {
5810
5811                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5812                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5813                         if (mono_type_is_native_blittable (arg0))
5814                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5815                 }
5816         }
5817
5818 #ifdef MONO_ARCH_SIMD_INTRINSICS
5819         if (cfg->opt & MONO_OPT_SIMD) {
5820                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5821                 if (ins)
5822                         return ins;
5823         }
5824 #endif
5825
5826         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5827         if (ins)
5828                 return ins;
5829
5830         if (COMPILE_LLVM (cfg)) {
5831                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5832                 if (ins)
5833                         return ins;
5834         }
5835
5836         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5837 }
5838
5839 /*
5840  * This entry point could be used later for arbitrary method
5841  * redirection.
5842  */
5843 inline static MonoInst*
5844 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5845                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5846 {
5847         if (method->klass == mono_defaults.string_class) {
5848                 /* managed string allocation support */
5849                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(cfg->opt & MONO_OPT_SHARED)) {
5850                         MonoInst *iargs [2];
5851                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5852                         MonoMethod *managed_alloc = NULL;
5853
5854                         g_assert (vtable); /*Should not fail since it System.String*/
5855 #ifndef MONO_CROSS_COMPILE
5856                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5857 #endif
5858                         if (!managed_alloc)
5859                                 return NULL;
5860                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5861                         iargs [1] = args [0];
5862                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5863                 }
5864         }
5865         return NULL;
5866 }
5867
5868 static void
5869 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5870 {
5871         MonoInst *store, *temp;
5872         int i;
5873
5874         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5875                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5876
5877                 /*
5878                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5879                  * would be different than the MonoInst's used to represent arguments, and
5880                  * the ldelema implementation can't deal with that.
5881                  * Solution: When ldelema is used on an inline argument, create a var for
5882                  * it, emit ldelema on that var, and emit the saving code below in
5883                  * inline_method () if needed.
5884                  */
5885                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5886                 cfg->args [i] = temp;
5887                 /* This uses cfg->args [i] which is set by the preceeding line */
5888                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5889                 store->cil_code = sp [0]->cil_code;
5890                 sp++;
5891         }
5892 }
5893
5894 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5895 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5896
5897 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5898 static gboolean
5899 check_inline_called_method_name_limit (MonoMethod *called_method)
5900 {
5901         int strncmp_result;
5902         static const char *limit = NULL;
5903
5904         if (limit == NULL) {
5905                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5906
5907                 if (limit_string != NULL)
5908                         limit = limit_string;
5909                 else
5910                         limit = "";
5911         }
5912
5913         if (limit [0] != '\0') {
5914                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5915
5916                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5917                 g_free (called_method_name);
5918
5919                 //return (strncmp_result <= 0);
5920                 return (strncmp_result == 0);
5921         } else {
5922                 return TRUE;
5923         }
5924 }
5925 #endif
5926
5927 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5928 static gboolean
5929 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5930 {
5931         int strncmp_result;
5932         static const char *limit = NULL;
5933
5934         if (limit == NULL) {
5935                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5936                 if (limit_string != NULL) {
5937                         limit = limit_string;
5938                 } else {
5939                         limit = "";
5940                 }
5941         }
5942
5943         if (limit [0] != '\0') {
5944                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5945
5946                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5947                 g_free (caller_method_name);
5948
5949                 //return (strncmp_result <= 0);
5950                 return (strncmp_result == 0);
5951         } else {
5952                 return TRUE;
5953         }
5954 }
5955 #endif
5956
5957 static void
5958 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5959 {
5960         static double r8_0 = 0.0;
5961         static float r4_0 = 0.0;
5962         MonoInst *ins;
5963         int t;
5964
5965         rtype = mini_get_underlying_type (rtype);
5966         t = rtype->type;
5967
5968         if (rtype->byref) {
5969                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5970         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5971                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5972         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5973                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5974         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5975                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5976                 ins->type = STACK_R4;
5977                 ins->inst_p0 = (void*)&r4_0;
5978                 ins->dreg = dreg;
5979                 MONO_ADD_INS (cfg->cbb, ins);
5980         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
5981                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5982                 ins->type = STACK_R8;
5983                 ins->inst_p0 = (void*)&r8_0;
5984                 ins->dreg = dreg;
5985                 MONO_ADD_INS (cfg->cbb, ins);
5986         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
5987                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
5988                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5989         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
5990                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5991         } else {
5992                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5993         }
5994 }
5995
5996 static void
5997 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5998 {
5999         int t;
6000
6001         rtype = mini_get_underlying_type (rtype);
6002         t = rtype->type;
6003
6004         if (rtype->byref) {
6005                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6006         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6007                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6008         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6009                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6010         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6011                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6012         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6013                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6014         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6015                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6016                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6017         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6018                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6019         } else {
6020                 emit_init_rvar (cfg, dreg, rtype);
6021         }
6022 }
6023
6024 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6025 static void
6026 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6027 {
6028         MonoInst *var = cfg->locals [local];
6029         if (COMPILE_SOFT_FLOAT (cfg)) {
6030                 MonoInst *store;
6031                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6032                 emit_init_rvar (cfg, reg, type);
6033                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6034         } else {
6035                 if (init)
6036                         emit_init_rvar (cfg, var->dreg, type);
6037                 else
6038                         emit_dummy_init_rvar (cfg, var->dreg, type);
6039         }
6040 }
6041
6042 int
6043 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6044 {
6045         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6046 }
6047
6048 /*
6049  * inline_method:
6050  *
6051  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6052  */
6053 static int
6054 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6055                guchar *ip, guint real_offset, gboolean inline_always)
6056 {
6057         MonoError error;
6058         MonoInst *ins, *rvar = NULL;
6059         MonoMethodHeader *cheader;
6060         MonoBasicBlock *ebblock, *sbblock;
6061         int i, costs;
6062         MonoMethod *prev_inlined_method;
6063         MonoInst **prev_locals, **prev_args;
6064         MonoType **prev_arg_types;
6065         guint prev_real_offset;
6066         GHashTable *prev_cbb_hash;
6067         MonoBasicBlock **prev_cil_offset_to_bb;
6068         MonoBasicBlock *prev_cbb;
6069         const unsigned char *prev_ip;
6070         unsigned char *prev_cil_start;
6071         guint32 prev_cil_offset_to_bb_len;
6072         MonoMethod *prev_current_method;
6073         MonoGenericContext *prev_generic_context;
6074         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6075
6076         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6077
6078 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6079         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6080                 return 0;
6081 #endif
6082 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6083         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6084                 return 0;
6085 #endif
6086
6087         if (!fsig)
6088                 fsig = mono_method_signature (cmethod);
6089
6090         if (cfg->verbose_level > 2)
6091                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6092
6093         if (!cmethod->inline_info) {
6094                 cfg->stat_inlineable_methods++;
6095                 cmethod->inline_info = 1;
6096         }
6097
6098         /* allocate local variables */
6099         cheader = mono_method_get_header_checked (cmethod, &error);
6100         if (!cheader) {
6101                 if (inline_always) {
6102                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6103                         mono_error_move (&cfg->error, &error);
6104                 } else {
6105                         mono_error_cleanup (&error);
6106                 }
6107                 return 0;
6108         }
6109
6110         /*Must verify before creating locals as it can cause the JIT to assert.*/
6111         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6112                 mono_metadata_free_mh (cheader);
6113                 return 0;
6114         }
6115
6116         /* allocate space to store the return value */
6117         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6118                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6119         }
6120
6121         prev_locals = cfg->locals;
6122         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6123         for (i = 0; i < cheader->num_locals; ++i)
6124                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6125
6126         /* allocate start and end blocks */
6127         /* This is needed so if the inline is aborted, we can clean up */
6128         NEW_BBLOCK (cfg, sbblock);
6129         sbblock->real_offset = real_offset;
6130
6131         NEW_BBLOCK (cfg, ebblock);
6132         ebblock->block_num = cfg->num_bblocks++;
6133         ebblock->real_offset = real_offset;
6134
6135         prev_args = cfg->args;
6136         prev_arg_types = cfg->arg_types;
6137         prev_inlined_method = cfg->inlined_method;
6138         prev_ret_var_set = cfg->ret_var_set;
6139         prev_real_offset = cfg->real_offset;
6140         prev_cbb_hash = cfg->cbb_hash;
6141         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6142         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6143         prev_cil_start = cfg->cil_start;
6144         prev_ip = cfg->ip;
6145         prev_cbb = cfg->cbb;
6146         prev_current_method = cfg->current_method;
6147         prev_generic_context = cfg->generic_context;
6148         prev_disable_inline = cfg->disable_inline;
6149
6150         cfg->inlined_method = cmethod;
6151         cfg->ret_var_set = FALSE;
6152         cfg->inline_depth ++;
6153
6154         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6155                 virtual_ = TRUE;
6156
6157         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6158
6159         ret_var_set = cfg->ret_var_set;
6160
6161         cfg->inlined_method = prev_inlined_method;
6162         cfg->real_offset = prev_real_offset;
6163         cfg->cbb_hash = prev_cbb_hash;
6164         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6165         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6166         cfg->cil_start = prev_cil_start;
6167         cfg->ip = prev_ip;
6168         cfg->locals = prev_locals;
6169         cfg->args = prev_args;
6170         cfg->arg_types = prev_arg_types;
6171         cfg->current_method = prev_current_method;
6172         cfg->generic_context = prev_generic_context;
6173         cfg->ret_var_set = prev_ret_var_set;
6174         cfg->disable_inline = prev_disable_inline;
6175         cfg->inline_depth --;
6176
6177         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6178                 if (cfg->verbose_level > 2)
6179                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6180
6181                 cfg->stat_inlined_methods++;
6182
6183                 /* always add some code to avoid block split failures */
6184                 MONO_INST_NEW (cfg, ins, OP_NOP);
6185                 MONO_ADD_INS (prev_cbb, ins);
6186
6187                 prev_cbb->next_bb = sbblock;
6188                 link_bblock (cfg, prev_cbb, sbblock);
6189
6190                 /*
6191                  * Get rid of the begin and end bblocks if possible to aid local
6192                  * optimizations.
6193                  */
6194                 if (prev_cbb->out_count == 1)
6195                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6196
6197                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6198                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6199
6200                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6201                         MonoBasicBlock *prev = ebblock->in_bb [0];
6202
6203                         if (prev->next_bb == ebblock) {
6204                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6205                                 cfg->cbb = prev;
6206                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6207                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6208                                         cfg->cbb = prev_cbb;
6209                                 }
6210                         } else {
6211                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6212                                 cfg->cbb = ebblock;
6213                         }
6214                 } else {
6215                         /*
6216                          * Its possible that the rvar is set in some prev bblock, but not in others.
6217                          * (#1835).
6218                          */
6219                         if (rvar) {
6220                                 MonoBasicBlock *bb;
6221
6222                                 for (i = 0; i < ebblock->in_count; ++i) {
6223                                         bb = ebblock->in_bb [i];
6224
6225                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6226                                                 cfg->cbb = bb;
6227
6228                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6229                                         }
6230                                 }
6231                         }
6232
6233                         cfg->cbb = ebblock;
6234                 }
6235
6236                 if (rvar) {
6237                         /*
6238                          * If the inlined method contains only a throw, then the ret var is not
6239                          * set, so set it to a dummy value.
6240                          */
6241                         if (!ret_var_set)
6242                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6243
6244                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6245                         *sp++ = ins;
6246                 }
6247                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6248                 return costs + 1;
6249         } else {
6250                 if (cfg->verbose_level > 2)
6251                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6252                 cfg->exception_type = MONO_EXCEPTION_NONE;
6253
6254                 /* This gets rid of the newly added bblocks */
6255                 cfg->cbb = prev_cbb;
6256         }
6257         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6258         return 0;
6259 }
6260
6261 /*
6262  * Some of these comments may well be out-of-date.
6263  * Design decisions: we do a single pass over the IL code (and we do bblock
6264  * splitting/merging in the few cases when it's required: a back jump to an IL
6265  * address that was not already seen as bblock starting point).
6266  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6267  * Complex operations are decomposed in simpler ones right away. We need to let the
6268  * arch-specific code peek and poke inside this process somehow (except when the
6269  * optimizations can take advantage of the full semantic info of coarse opcodes).
6270  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6271  * MonoInst->opcode initially is the IL opcode or some simplification of that
6272  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6273  * opcode with value bigger than OP_LAST.
6274  * At this point the IR can be handed over to an interpreter, a dumb code generator
6275  * or to the optimizing code generator that will translate it to SSA form.
6276  *
6277  * Profiling directed optimizations.
6278  * We may compile by default with few or no optimizations and instrument the code
6279  * or the user may indicate what methods to optimize the most either in a config file
6280  * or through repeated runs where the compiler applies offline the optimizations to
6281  * each method and then decides if it was worth it.
6282  */
6283
6284 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6285 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6286 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6287 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6288 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6289 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6290 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6291 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6292
6293 /* offset from br.s -> br like opcodes */
6294 #define BIG_BRANCH_OFFSET 13
6295
6296 static gboolean
6297 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6298 {
6299         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6300
6301         return b == NULL || b == bb;
6302 }
6303
6304 static int
6305 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6306 {
6307         unsigned char *ip = start;
6308         unsigned char *target;
6309         int i;
6310         guint cli_addr;
6311         MonoBasicBlock *bblock;
6312         const MonoOpcode *opcode;
6313
6314         while (ip < end) {
6315                 cli_addr = ip - start;
6316                 i = mono_opcode_value ((const guint8 **)&ip, end);
6317                 if (i < 0)
6318                         UNVERIFIED;
6319                 opcode = &mono_opcodes [i];
6320                 switch (opcode->argument) {
6321                 case MonoInlineNone:
6322                         ip++;
6323                         break;
6324                 case MonoInlineString:
6325                 case MonoInlineType:
6326                 case MonoInlineField:
6327                 case MonoInlineMethod:
6328                 case MonoInlineTok:
6329                 case MonoInlineSig:
6330                 case MonoShortInlineR:
6331                 case MonoInlineI:
6332                         ip += 5;
6333                         break;
6334                 case MonoInlineVar:
6335                         ip += 3;
6336                         break;
6337                 case MonoShortInlineVar:
6338                 case MonoShortInlineI:
6339                         ip += 2;
6340                         break;
6341                 case MonoShortInlineBrTarget:
6342                         target = start + cli_addr + 2 + (signed char)ip [1];
6343                         GET_BBLOCK (cfg, bblock, target);
6344                         ip += 2;
6345                         if (ip < end)
6346                                 GET_BBLOCK (cfg, bblock, ip);
6347                         break;
6348                 case MonoInlineBrTarget:
6349                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6350                         GET_BBLOCK (cfg, bblock, target);
6351                         ip += 5;
6352                         if (ip < end)
6353                                 GET_BBLOCK (cfg, bblock, ip);
6354                         break;
6355                 case MonoInlineSwitch: {
6356                         guint32 n = read32 (ip + 1);
6357                         guint32 j;
6358                         ip += 5;
6359                         cli_addr += 5 + 4 * n;
6360                         target = start + cli_addr;
6361                         GET_BBLOCK (cfg, bblock, target);
6362
6363                         for (j = 0; j < n; ++j) {
6364                                 target = start + cli_addr + (gint32)read32 (ip);
6365                                 GET_BBLOCK (cfg, bblock, target);
6366                                 ip += 4;
6367                         }
6368                         break;
6369                 }
6370                 case MonoInlineR:
6371                 case MonoInlineI8:
6372                         ip += 9;
6373                         break;
6374                 default:
6375                         g_assert_not_reached ();
6376                 }
6377
6378                 if (i == CEE_THROW) {
6379                         unsigned char *bb_start = ip - 1;
6380
6381                         /* Find the start of the bblock containing the throw */
6382                         bblock = NULL;
6383                         while ((bb_start >= start) && !bblock) {
6384                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6385                                 bb_start --;
6386                         }
6387                         if (bblock)
6388                                 bblock->out_of_line = 1;
6389                 }
6390         }
6391         return 0;
6392 unverified:
6393 exception_exit:
6394         *pos = ip;
6395         return 1;
6396 }
6397
6398 static inline MonoMethod *
6399 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6400 {
6401         MonoMethod *method;
6402
6403         error_init (error);
6404
6405         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6406                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6407                 if (context) {
6408                         method = mono_class_inflate_generic_method_checked (method, context, error);
6409                 }
6410         } else {
6411                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6412         }
6413
6414         return method;
6415 }
6416
6417 static inline MonoMethod *
6418 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6419 {
6420         MonoError error;
6421         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6422
6423         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6424                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6425                 method = NULL;
6426         }
6427
6428         if (!method && !cfg)
6429                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6430
6431         return method;
6432 }
6433
6434 static inline MonoMethodSignature*
6435 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6436 {
6437         MonoMethodSignature *fsig;
6438
6439         error_init (error);
6440         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6441                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6442         } else {
6443                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6444                 return_val_if_nok (error, NULL);
6445         }
6446         if (context) {
6447                 fsig = mono_inflate_generic_signature(fsig, context, error);
6448         }
6449         return fsig;
6450 }
6451
6452 static MonoMethod*
6453 throw_exception (void)
6454 {
6455         static MonoMethod *method = NULL;
6456
6457         if (!method) {
6458                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6459                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6460         }
6461         g_assert (method);
6462         return method;
6463 }
6464
6465 static void
6466 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6467 {
6468         MonoMethod *thrower = throw_exception ();
6469         MonoInst *args [1];
6470
6471         EMIT_NEW_PCONST (cfg, args [0], ex);
6472         mono_emit_method_call (cfg, thrower, args, NULL);
6473 }
6474
6475 /*
6476  * Return the original method is a wrapper is specified. We can only access
6477  * the custom attributes from the original method.
6478  */
6479 static MonoMethod*
6480 get_original_method (MonoMethod *method)
6481 {
6482         if (method->wrapper_type == MONO_WRAPPER_NONE)
6483                 return method;
6484
6485         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6486         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6487                 return NULL;
6488
6489         /* in other cases we need to find the original method */
6490         return mono_marshal_method_from_wrapper (method);
6491 }
6492
6493 static void
6494 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6495 {
6496         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6497         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6498         if (ex)
6499                 emit_throw_exception (cfg, ex);
6500 }
6501
6502 static void
6503 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6504 {
6505         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6506         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6507         if (ex)
6508                 emit_throw_exception (cfg, ex);
6509 }
6510
6511 /*
6512  * Check that the IL instructions at ip are the array initialization
6513  * sequence and return the pointer to the data and the size.
6514  */
6515 static const char*
6516 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6517 {
6518         /*
6519          * newarr[System.Int32]
6520          * dup
6521          * ldtoken field valuetype ...
6522          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6523          */
6524         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6525                 MonoError error;
6526                 guint32 token = read32 (ip + 7);
6527                 guint32 field_token = read32 (ip + 2);
6528                 guint32 field_index = field_token & 0xffffff;
6529                 guint32 rva;
6530                 const char *data_ptr;
6531                 int size = 0;
6532                 MonoMethod *cmethod;
6533                 MonoClass *dummy_class;
6534                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6535                 int dummy_align;
6536
6537                 if (!field) {
6538                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6539                         return NULL;
6540                 }
6541
6542                 *out_field_token = field_token;
6543
6544                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6545                 if (!cmethod)
6546                         return NULL;
6547                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6548                         return NULL;
6549                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6550                 case MONO_TYPE_I1:
6551                 case MONO_TYPE_U1:
6552                         size = 1; break;
6553                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6554 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6555                 case MONO_TYPE_I2:
6556                 case MONO_TYPE_U2:
6557                         size = 2; break;
6558                 case MONO_TYPE_I4:
6559                 case MONO_TYPE_U4:
6560                 case MONO_TYPE_R4:
6561                         size = 4; break;
6562                 case MONO_TYPE_R8:
6563                 case MONO_TYPE_I8:
6564                 case MONO_TYPE_U8:
6565                         size = 8; break;
6566 #endif
6567                 default:
6568                         return NULL;
6569                 }
6570                 size *= len;
6571                 if (size > mono_type_size (field->type, &dummy_align))
6572                     return NULL;
6573                 *out_size = size;
6574                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6575                 if (!image_is_dynamic (method->klass->image)) {
6576                         field_index = read32 (ip + 2) & 0xffffff;
6577                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6578                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6579                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6580                         /* for aot code we do the lookup on load */
6581                         if (aot && data_ptr)
6582                                 return (const char *)GUINT_TO_POINTER (rva);
6583                 } else {
6584                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6585                         g_assert (!aot);
6586                         data_ptr = mono_field_get_data (field);
6587                 }
6588                 return data_ptr;
6589         }
6590         return NULL;
6591 }
6592
6593 static void
6594 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6595 {
6596         MonoError error;
6597         char *method_fname = mono_method_full_name (method, TRUE);
6598         char *method_code;
6599         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6600
6601         if (!header) {
6602                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6603                 mono_error_cleanup (&error);
6604         } else if (header->code_size == 0)
6605                 method_code = g_strdup ("method body is empty.");
6606         else
6607                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6608         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6609         g_free (method_fname);
6610         g_free (method_code);
6611         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6612 }
6613
6614 static guint32
6615 mono_type_to_stloc_coerce (MonoType *type)
6616 {
6617         if (type->byref)
6618                 return 0;
6619
6620         type = mini_get_underlying_type (type);
6621 handle_enum:
6622         switch (type->type) {
6623         case MONO_TYPE_I1:
6624                 return OP_ICONV_TO_I1;
6625         case MONO_TYPE_U1:
6626                 return OP_ICONV_TO_U1;
6627         case MONO_TYPE_I2:
6628                 return OP_ICONV_TO_I2;
6629         case MONO_TYPE_U2:
6630                 return OP_ICONV_TO_U2;
6631         case MONO_TYPE_I4:
6632         case MONO_TYPE_U4:
6633         case MONO_TYPE_I:
6634         case MONO_TYPE_U:
6635         case MONO_TYPE_PTR:
6636         case MONO_TYPE_FNPTR:
6637         case MONO_TYPE_CLASS:
6638         case MONO_TYPE_STRING:
6639         case MONO_TYPE_OBJECT:
6640         case MONO_TYPE_SZARRAY:
6641         case MONO_TYPE_ARRAY:
6642         case MONO_TYPE_I8:
6643         case MONO_TYPE_U8:
6644         case MONO_TYPE_R4:
6645         case MONO_TYPE_R8:
6646         case MONO_TYPE_TYPEDBYREF:
6647         case MONO_TYPE_GENERICINST:
6648                 return 0;
6649         case MONO_TYPE_VALUETYPE:
6650                 if (type->data.klass->enumtype) {
6651                         type = mono_class_enum_basetype (type->data.klass);
6652                         goto handle_enum;
6653                 }
6654                 return 0;
6655         case MONO_TYPE_VAR:
6656         case MONO_TYPE_MVAR: //TODO I believe we don't need to handle gsharedvt as there won't be match and, for example, u1 is not covariant to u32
6657                 return 0;
6658         default:
6659                 g_error ("unknown type 0x%02x in mono_type_to_stloc_coerce", type->type);
6660         }
6661         return -1;
6662 }
6663
6664 static void
6665 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6666 {
6667         MonoInst *ins;
6668         guint32 coerce_op = mono_type_to_stloc_coerce (header->locals [n]);
6669
6670         if (coerce_op) {
6671                 if (cfg->cbb->last_ins == sp [0] && sp [0]->opcode == coerce_op) {
6672                         if (cfg->verbose_level > 2)
6673                                 printf ("Found existing coercing is enough for stloc\n");
6674                 } else {
6675                         MONO_INST_NEW (cfg, ins, coerce_op);
6676                         ins->dreg = alloc_ireg (cfg);
6677                         ins->sreg1 = sp [0]->dreg;
6678                         ins->type = STACK_I4;
6679                         ins->klass = mono_class_from_mono_type (header->locals [n]);
6680                         MONO_ADD_INS (cfg->cbb, ins);
6681                         *sp = mono_decompose_opcode (cfg, ins);
6682                 }
6683         }
6684
6685
6686         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6687         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6688                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6689                 /* Optimize reg-reg moves away */
6690                 /*
6691                  * Can't optimize other opcodes, since sp[0] might point to
6692                  * the last ins of a decomposed opcode.
6693                  */
6694                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6695         } else {
6696                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6697         }
6698 }
6699
6700 static void
6701 emit_starg_ir (MonoCompile *cfg, MonoInst **sp, int n)
6702 {
6703         MonoInst *ins;
6704         guint32 coerce_op = mono_type_to_stloc_coerce (cfg->arg_types [n]);
6705
6706         if (coerce_op) {
6707                 if (cfg->cbb->last_ins == sp [0] && sp [0]->opcode == coerce_op) {
6708                         if (cfg->verbose_level > 2)
6709                                 printf ("Found existing coercing is enough for starg\n");
6710                 } else {
6711                         MONO_INST_NEW (cfg, ins, coerce_op);
6712                         ins->dreg = alloc_ireg (cfg);
6713                         ins->sreg1 = sp [0]->dreg;
6714                         ins->type = STACK_I4;
6715                         ins->klass = mono_class_from_mono_type (cfg->arg_types [n]);
6716                         MONO_ADD_INS (cfg->cbb, ins);
6717                         *sp = mono_decompose_opcode (cfg, ins);
6718                 }
6719         }
6720
6721         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
6722 }
6723
6724 /*
6725  * ldloca inhibits many optimizations so try to get rid of it in common
6726  * cases.
6727  */
6728 static inline unsigned char *
6729 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6730 {
6731         int local, token;
6732         MonoClass *klass;
6733         MonoType *type;
6734
6735         if (size == 1) {
6736                 local = ip [1];
6737                 ip += 2;
6738         } else {
6739                 local = read16 (ip + 2);
6740                 ip += 4;
6741         }
6742
6743         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6744                 /* From the INITOBJ case */
6745                 token = read32 (ip + 2);
6746                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6747                 CHECK_TYPELOAD (klass);
6748                 type = mini_get_underlying_type (&klass->byval_arg);
6749                 emit_init_local (cfg, local, type, TRUE);
6750                 return ip + 6;
6751         }
6752  exception_exit:
6753         return NULL;
6754 }
6755
6756 static MonoInst*
6757 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6758 {
6759         MonoInst *icall_args [16];
6760         MonoInst *call_target, *ins, *vtable_ins;
6761         int arg_reg, this_reg, vtable_reg;
6762         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6763         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6764         gboolean variant_iface = FALSE;
6765         guint32 slot;
6766         int offset;
6767         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6768
6769         /*
6770          * In llvm-only mode, vtables contain function descriptors instead of
6771          * method addresses/trampolines.
6772          */
6773         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6774
6775         if (is_iface)
6776                 slot = mono_method_get_imt_slot (cmethod);
6777         else
6778                 slot = mono_method_get_vtable_index (cmethod);
6779
6780         this_reg = sp [0]->dreg;
6781
6782         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6783                 variant_iface = TRUE;
6784
6785         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6786                 /*
6787                  * The simplest case, a normal virtual call.
6788                  */
6789                 int slot_reg = alloc_preg (cfg);
6790                 int addr_reg = alloc_preg (cfg);
6791                 int arg_reg = alloc_preg (cfg);
6792                 MonoBasicBlock *non_null_bb;
6793
6794                 vtable_reg = alloc_preg (cfg);
6795                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6796                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6797
6798                 /* Load the vtable slot, which contains a function descriptor. */
6799                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6800
6801                 NEW_BBLOCK (cfg, non_null_bb);
6802
6803                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6804                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6805                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6806
6807                 /* Slow path */
6808                 // FIXME: Make the wrapper use the preserveall cconv
6809                 // FIXME: Use one icall per slot for small slot numbers ?
6810                 icall_args [0] = vtable_ins;
6811                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6812                 /* Make the icall return the vtable slot value to save some code space */
6813                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6814                 ins->dreg = slot_reg;
6815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6816
6817                 /* Fastpath */
6818                 MONO_START_BB (cfg, non_null_bb);
6819                 /* Load the address + arg from the vtable slot */
6820                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6822
6823                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6824         }
6825
6826         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6827                 /*
6828                  * A simple interface call
6829                  *
6830                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6831                  * The imt slot contains a function descriptor for a runtime function + arg.
6832                  */
6833                 int slot_reg = alloc_preg (cfg);
6834                 int addr_reg = alloc_preg (cfg);
6835                 int arg_reg = alloc_preg (cfg);
6836                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6837
6838                 vtable_reg = alloc_preg (cfg);
6839                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6840                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6841
6842                 /*
6843                  * The slot is already initialized when the vtable is created so there is no need
6844                  * to check it here.
6845                  */
6846
6847                 /* Load the imt slot, which contains a function descriptor. */
6848                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6849
6850                 /* Load the address + arg of the imt thunk from the imt slot */
6851                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6852                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6853                 /*
6854                  * IMT thunks in llvm-only mode are C functions which take an info argument
6855                  * plus the imt method and return the ftndesc to call.
6856                  */
6857                 icall_args [0] = thunk_arg_ins;
6858                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6859                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6860                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6861
6862                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6863         }
6864
6865         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6866                 /*
6867                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6868                  * dynamically extended as more instantiations are discovered.
6869                  * This handles generic virtual methods both on classes and interfaces.
6870                  */
6871                 int slot_reg = alloc_preg (cfg);
6872                 int addr_reg = alloc_preg (cfg);
6873                 int arg_reg = alloc_preg (cfg);
6874                 int ftndesc_reg = alloc_preg (cfg);
6875                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6876                 MonoBasicBlock *slowpath_bb, *end_bb;
6877
6878                 NEW_BBLOCK (cfg, slowpath_bb);
6879                 NEW_BBLOCK (cfg, end_bb);
6880
6881                 vtable_reg = alloc_preg (cfg);
6882                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6883                 if (is_iface)
6884                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6885                 else
6886                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6887
6888                 /* Load the slot, which contains a function descriptor. */
6889                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6890
6891                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6892                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6893                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6894                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6895
6896                 /* Fastpath */
6897                 /* Same as with iface calls */
6898                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6899                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6900                 icall_args [0] = thunk_arg_ins;
6901                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6902                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6903                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6904                 ftndesc_ins->dreg = ftndesc_reg;
6905                 /*
6906                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6907                  * they don't know about yet. Fall back to the slowpath in that case.
6908                  */
6909                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6910                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6911
6912                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6913
6914                 /* Slowpath */
6915                 MONO_START_BB (cfg, slowpath_bb);
6916                 icall_args [0] = vtable_ins;
6917                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6918                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6919                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6920                 if (is_iface)
6921                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6922                 else
6923                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6924                 ftndesc_ins->dreg = ftndesc_reg;
6925                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6926
6927                 /* Common case */
6928                 MONO_START_BB (cfg, end_bb);
6929                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6930         }
6931
6932         /*
6933          * Non-optimized cases
6934          */
6935         icall_args [0] = sp [0];
6936         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6937
6938         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6939                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6940
6941         arg_reg = alloc_preg (cfg);
6942         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6943         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6944
6945         g_assert (is_gsharedvt);
6946         if (is_iface)
6947                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6948         else
6949                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6950
6951         /*
6952          * Pass the extra argument even if the callee doesn't receive it, most
6953          * calling conventions allow this.
6954          */
6955         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6956 }
6957
6958 static gboolean
6959 is_exception_class (MonoClass *klass)
6960 {
6961         while (klass) {
6962                 if (klass == mono_defaults.exception_class)
6963                         return TRUE;
6964                 klass = klass->parent;
6965         }
6966         return FALSE;
6967 }
6968
6969 /*
6970  * is_jit_optimizer_disabled:
6971  *
6972  *   Determine whenever M's assembly has a DebuggableAttribute with the
6973  * IsJITOptimizerDisabled flag set.
6974  */
6975 static gboolean
6976 is_jit_optimizer_disabled (MonoMethod *m)
6977 {
6978         MonoError error;
6979         MonoAssembly *ass = m->klass->image->assembly;
6980         MonoCustomAttrInfo* attrs;
6981         MonoClass *klass;
6982         int i;
6983         gboolean val = FALSE;
6984
6985         g_assert (ass);
6986         if (ass->jit_optimizer_disabled_inited)
6987                 return ass->jit_optimizer_disabled;
6988
6989         klass = mono_class_try_get_debuggable_attribute_class ();
6990
6991         if (!klass) {
6992                 /* Linked away */
6993                 ass->jit_optimizer_disabled = FALSE;
6994                 mono_memory_barrier ();
6995                 ass->jit_optimizer_disabled_inited = TRUE;
6996                 return FALSE;
6997         }
6998
6999         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
7000         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7001         if (attrs) {
7002                 for (i = 0; i < attrs->num_attrs; ++i) {
7003                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7004                         const gchar *p;
7005                         MonoMethodSignature *sig;
7006
7007                         if (!attr->ctor || attr->ctor->klass != klass)
7008                                 continue;
7009                         /* Decode the attribute. See reflection.c */
7010                         p = (const char*)attr->data;
7011                         g_assert (read16 (p) == 0x0001);
7012                         p += 2;
7013
7014                         // FIXME: Support named parameters
7015                         sig = mono_method_signature (attr->ctor);
7016                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7017                                 continue;
7018                         /* Two boolean arguments */
7019                         p ++;
7020                         val = *p;
7021                 }
7022                 mono_custom_attrs_free (attrs);
7023         }
7024
7025         ass->jit_optimizer_disabled = val;
7026         mono_memory_barrier ();
7027         ass->jit_optimizer_disabled_inited = TRUE;
7028
7029         return val;
7030 }
7031
7032 static gboolean
7033 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7034 {
7035         gboolean supported_tail_call;
7036         int i;
7037
7038         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7039
7040         for (i = 0; i < fsig->param_count; ++i) {
7041                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7042                         /* These can point to the current method's stack */
7043                         supported_tail_call = FALSE;
7044         }
7045         if (fsig->hasthis && cmethod->klass->valuetype)
7046                 /* this might point to the current method's stack */
7047                 supported_tail_call = FALSE;
7048         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7049                 supported_tail_call = FALSE;
7050         if (cfg->method->save_lmf)
7051                 supported_tail_call = FALSE;
7052         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7053                 supported_tail_call = FALSE;
7054         if (call_opcode != CEE_CALL)
7055                 supported_tail_call = FALSE;
7056
7057         /* Debugging support */
7058 #if 0
7059         if (supported_tail_call) {
7060                 if (!mono_debug_count ())
7061                         supported_tail_call = FALSE;
7062         }
7063 #endif
7064
7065         return supported_tail_call;
7066 }
7067
7068 /*
7069  * handle_ctor_call:
7070  *
7071  *   Handle calls made to ctors from NEWOBJ opcodes.
7072  */
7073 static void
7074 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7075                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7076 {
7077         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7078
7079         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7080                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7081                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7082                         mono_class_vtable (cfg->domain, cmethod->klass);
7083                         CHECK_TYPELOAD (cmethod->klass);
7084
7085                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7086                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7087                 } else {
7088                         if (context_used) {
7089                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7090                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7091                         } else {
7092                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7093
7094                                 CHECK_TYPELOAD (cmethod->klass);
7095                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7096                         }
7097                 }
7098         }
7099
7100         /* Avoid virtual calls to ctors if possible */
7101         if (mono_class_is_marshalbyref (cmethod->klass))
7102                 callvirt_this_arg = sp [0];
7103
7104         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7105                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7106                 CHECK_CFG_EXCEPTION;
7107         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7108                            mono_method_check_inlining (cfg, cmethod) &&
7109                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7110                 int costs;
7111
7112                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7113                         cfg->real_offset += 5;
7114
7115                         *inline_costs += costs - 5;
7116                 } else {
7117                         INLINE_FAILURE ("inline failure");
7118                         // FIXME-VT: Clean this up
7119                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7120                                 GSHAREDVT_FAILURE(*ip);
7121                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7122                 }
7123         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7124                 MonoInst *addr;
7125
7126                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7127
7128                 if (cfg->llvm_only) {
7129                         // FIXME: Avoid initializing vtable_arg
7130                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7131                 } else {
7132                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7133                 }
7134         } else if (context_used &&
7135                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7136                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7137                 MonoInst *cmethod_addr;
7138
7139                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7140
7141                 if (cfg->llvm_only) {
7142                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7143                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7144                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7145                 } else {
7146                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7147                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7148
7149                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7150                 }
7151         } else {
7152                 INLINE_FAILURE ("ctor call");
7153                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7154                                                                                   callvirt_this_arg, NULL, vtable_arg);
7155         }
7156  exception_exit:
7157         return;
7158 }
7159
7160 static void
7161 emit_setret (MonoCompile *cfg, MonoInst *val)
7162 {
7163         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7164         MonoInst *ins;
7165
7166         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7167                 MonoInst *ret_addr;
7168
7169                 if (!cfg->vret_addr) {
7170                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7171                 } else {
7172                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7173
7174                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7175                         ins->klass = mono_class_from_mono_type (ret_type);
7176                 }
7177         } else {
7178 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7179                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7180                         MonoInst *iargs [1];
7181                         MonoInst *conv;
7182
7183                         iargs [0] = val;
7184                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7185                         mono_arch_emit_setret (cfg, cfg->method, conv);
7186                 } else {
7187                         mono_arch_emit_setret (cfg, cfg->method, val);
7188                 }
7189 #else
7190                 mono_arch_emit_setret (cfg, cfg->method, val);
7191 #endif
7192         }
7193 }
7194
7195 /*
7196  * mono_method_to_ir:
7197  *
7198  * Translate the .net IL into linear IR.
7199  *
7200  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7201  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7202  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7203  * @inline_args: if not NULL, contains the arguments to the inline call
7204  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7205  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7206  *
7207  * This method is used to turn ECMA IL into Mono's internal Linear IR
7208  * reprensetation.  It is used both for entire methods, as well as
7209  * inlining existing methods.  In the former case, the @start_bblock,
7210  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7211  * inline_offset is set to zero.
7212  *
7213  * Returns: the inline cost, or -1 if there was an error processing this method.
7214  */
7215 int
7216 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7217                    MonoInst *return_var, MonoInst **inline_args,
7218                    guint inline_offset, gboolean is_virtual_call)
7219 {
7220         MonoError error;
7221         MonoInst *ins, **sp, **stack_start;
7222         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7223         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7224         MonoMethod *cmethod, *method_definition;
7225         MonoInst **arg_array;
7226         MonoMethodHeader *header;
7227         MonoImage *image;
7228         guint32 token, ins_flag;
7229         MonoClass *klass;
7230         MonoClass *constrained_class = NULL;
7231         unsigned char *ip, *end, *target, *err_pos;
7232         MonoMethodSignature *sig;
7233         MonoGenericContext *generic_context = NULL;
7234         MonoGenericContainer *generic_container = NULL;
7235         MonoType **param_types;
7236         int i, n, start_new_bblock, dreg;
7237         int num_calls = 0, inline_costs = 0;
7238         int breakpoint_id = 0;
7239         guint num_args;
7240         GSList *class_inits = NULL;
7241         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7242         int context_used;
7243         gboolean init_locals, seq_points, skip_dead_blocks;
7244         gboolean sym_seq_points = FALSE;
7245         MonoDebugMethodInfo *minfo;
7246         MonoBitSet *seq_point_locs = NULL;
7247         MonoBitSet *seq_point_set_locs = NULL;
7248
7249         cfg->disable_inline = is_jit_optimizer_disabled (method);
7250
7251         /* serialization and xdomain stuff may need access to private fields and methods */
7252         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7253         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7254         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7255         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7256         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7257         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7258
7259         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7260         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7261         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7262         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7263         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7264
7265         image = method->klass->image;
7266         header = mono_method_get_header_checked (method, &cfg->error);
7267         if (!header) {
7268                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7269                 goto exception_exit;
7270         } else {
7271                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7272         }
7273
7274         generic_container = mono_method_get_generic_container (method);
7275         sig = mono_method_signature (method);
7276         num_args = sig->hasthis + sig->param_count;
7277         ip = (unsigned char*)header->code;
7278         cfg->cil_start = ip;
7279         end = ip + header->code_size;
7280         cfg->stat_cil_code_size += header->code_size;
7281
7282         seq_points = cfg->gen_seq_points && cfg->method == method;
7283
7284         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7285                 /* We could hit a seq point before attaching to the JIT (#8338) */
7286                 seq_points = FALSE;
7287         }
7288
7289         if (cfg->method == method)
7290                 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7291
7292         if ((cfg->gen_sdb_seq_points && cfg->method == method) || cfg->coverage_info) {
7293                 minfo = mono_debug_lookup_method (method);
7294                 if (minfo) {
7295                         MonoSymSeqPoint *sps;
7296                         int i, n_il_offsets;
7297
7298                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7299                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7300                         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);
7301                         sym_seq_points = TRUE;
7302                         for (i = 0; i < n_il_offsets; ++i) {
7303                                 if (sps [i].il_offset < header->code_size)
7304                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7305                         }
7306                         g_free (sps);
7307
7308                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7309                         if (asyncMethod) {
7310                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7311                                 {
7312                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7313                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7314                                 }
7315                                 mono_debug_free_method_async_debug_info (asyncMethod);
7316                         }
7317                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7318                         /* Methods without line number info like auto-generated property accessors */
7319                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7320                         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);
7321                         sym_seq_points = TRUE;
7322                 }
7323         }
7324
7325         /*
7326          * Methods without init_locals set could cause asserts in various passes
7327          * (#497220). To work around this, we emit dummy initialization opcodes
7328          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7329          * on some platforms.
7330          */
7331         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7332                 init_locals = header->init_locals;
7333         else
7334                 init_locals = TRUE;
7335
7336         method_definition = method;
7337         while (method_definition->is_inflated) {
7338                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7339                 method_definition = imethod->declaring;
7340         }
7341
7342         /* SkipVerification is not allowed if core-clr is enabled */
7343         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7344                 dont_verify = TRUE;
7345                 dont_verify_stloc = TRUE;
7346         }
7347
7348         if (sig->is_inflated)
7349                 generic_context = mono_method_get_context (method);
7350         else if (generic_container)
7351                 generic_context = &generic_container->context;
7352         cfg->generic_context = generic_context;
7353
7354         if (!cfg->gshared)
7355                 g_assert (!sig->has_type_parameters);
7356
7357         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7358                 g_assert (method->is_inflated);
7359                 g_assert (mono_method_get_context (method)->method_inst);
7360         }
7361         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7362                 g_assert (sig->generic_param_count);
7363
7364         if (cfg->method == method) {
7365                 cfg->real_offset = 0;
7366         } else {
7367                 cfg->real_offset = inline_offset;
7368         }
7369
7370         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7371         cfg->cil_offset_to_bb_len = header->code_size;
7372
7373         cfg->current_method = method;
7374
7375         if (cfg->verbose_level > 2)
7376                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7377
7378         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7379         if (sig->hasthis)
7380                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7381         for (n = 0; n < sig->param_count; ++n)
7382                 param_types [n + sig->hasthis] = sig->params [n];
7383         cfg->arg_types = param_types;
7384
7385         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7386         if (cfg->method == method) {
7387                 /* ENTRY BLOCK */
7388                 NEW_BBLOCK (cfg, start_bblock);
7389                 cfg->bb_entry = start_bblock;
7390                 start_bblock->cil_code = NULL;
7391                 start_bblock->cil_length = 0;
7392
7393                 /* EXIT BLOCK */
7394                 NEW_BBLOCK (cfg, end_bblock);
7395                 cfg->bb_exit = end_bblock;
7396                 end_bblock->cil_code = NULL;
7397                 end_bblock->cil_length = 0;
7398                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7399                 g_assert (cfg->num_bblocks == 2);
7400
7401                 arg_array = cfg->args;
7402
7403                 if (header->num_clauses) {
7404                         cfg->spvars = g_hash_table_new (NULL, NULL);
7405                         cfg->exvars = g_hash_table_new (NULL, NULL);
7406                 }
7407                 /* handle exception clauses */
7408                 for (i = 0; i < header->num_clauses; ++i) {
7409                         MonoBasicBlock *try_bb;
7410                         MonoExceptionClause *clause = &header->clauses [i];
7411                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7412
7413                         try_bb->real_offset = clause->try_offset;
7414                         try_bb->try_start = TRUE;
7415                         try_bb->region = ((i + 1) << 8) | clause->flags;
7416                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7417                         tblock->real_offset = clause->handler_offset;
7418                         tblock->flags |= BB_EXCEPTION_HANDLER;
7419
7420                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
7421                                 mono_create_exvar_for_offset (cfg, clause->handler_offset);
7422                         /*
7423                          * Linking the try block with the EH block hinders inlining as we won't be able to
7424                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7425                          */
7426                         if (COMPILE_LLVM (cfg))
7427                                 link_bblock (cfg, try_bb, tblock);
7428
7429                         if (*(ip + clause->handler_offset) == CEE_POP)
7430                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7431
7432                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7433                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7434                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7435                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7436                                 MONO_ADD_INS (tblock, ins);
7437
7438                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7439                                         /* finally clauses already have a seq point */
7440                                         /* seq points for filter clauses are emitted below */
7441                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7442                                         MONO_ADD_INS (tblock, ins);
7443                                 }
7444
7445                                 /* todo: is a fault block unsafe to optimize? */
7446                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7447                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7448                         }
7449
7450                         /*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);
7451                           while (p < end) {
7452                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7453                           }*/
7454                         /* catch and filter blocks get the exception object on the stack */
7455                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7456                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7457
7458                                 /* mostly like handle_stack_args (), but just sets the input args */
7459                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7460                                 tblock->in_scount = 1;
7461                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7462                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7463
7464                                 cfg->cbb = tblock;
7465
7466 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7467                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7468                                 if (!cfg->compile_llvm) {
7469                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7470                                         ins->dreg = tblock->in_stack [0]->dreg;
7471                                         MONO_ADD_INS (tblock, ins);
7472                                 }
7473 #else
7474                                 MonoInst *dummy_use;
7475
7476                                 /*
7477                                  * Add a dummy use for the exvar so its liveness info will be
7478                                  * correct.
7479                                  */
7480                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7481 #endif
7482
7483                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7484                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7485                                         MONO_ADD_INS (tblock, ins);
7486                                 }
7487
7488                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7489                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7490                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7491                                         tblock->real_offset = clause->data.filter_offset;
7492                                         tblock->in_scount = 1;
7493                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7494                                         /* The filter block shares the exvar with the handler block */
7495                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7496                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7497                                         MONO_ADD_INS (tblock, ins);
7498                                 }
7499                         }
7500
7501                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7502                                         clause->data.catch_class &&
7503                                         cfg->gshared &&
7504                                         mono_class_check_context_used (clause->data.catch_class)) {
7505                                 /*
7506                                  * In shared generic code with catch
7507                                  * clauses containing type variables
7508                                  * the exception handling code has to
7509                                  * be able to get to the rgctx.
7510                                  * Therefore we have to make sure that
7511                                  * the vtable/mrgctx argument (for
7512                                  * static or generic methods) or the
7513                                  * "this" argument (for non-static
7514                                  * methods) are live.
7515                                  */
7516                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7517                                                 mini_method_get_context (method)->method_inst ||
7518                                                 method->klass->valuetype) {
7519                                         mono_get_vtable_var (cfg);
7520                                 } else {
7521                                         MonoInst *dummy_use;
7522
7523                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7524                                 }
7525                         }
7526                 }
7527         } else {
7528                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7529                 cfg->cbb = start_bblock;
7530                 cfg->args = arg_array;
7531                 mono_save_args (cfg, sig, inline_args);
7532         }
7533
7534         /* FIRST CODE BLOCK */
7535         NEW_BBLOCK (cfg, tblock);
7536         tblock->cil_code = ip;
7537         cfg->cbb = tblock;
7538         cfg->ip = ip;
7539
7540         ADD_BBLOCK (cfg, tblock);
7541
7542         if (cfg->method == method) {
7543                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7544                 if (breakpoint_id) {
7545                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7546                         MONO_ADD_INS (cfg->cbb, ins);
7547                 }
7548         }
7549
7550         /* we use a separate basic block for the initialization code */
7551         NEW_BBLOCK (cfg, init_localsbb);
7552         if (cfg->method == method)
7553                 cfg->bb_init = init_localsbb;
7554         init_localsbb->real_offset = cfg->real_offset;
7555         start_bblock->next_bb = init_localsbb;
7556         init_localsbb->next_bb = cfg->cbb;
7557         link_bblock (cfg, start_bblock, init_localsbb);
7558         link_bblock (cfg, init_localsbb, cfg->cbb);
7559
7560         cfg->cbb = init_localsbb;
7561
7562         if (cfg->gsharedvt && cfg->method == method) {
7563                 MonoGSharedVtMethodInfo *info;
7564                 MonoInst *var, *locals_var;
7565                 int dreg;
7566
7567                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7568                 info->method = cfg->method;
7569                 info->count_entries = 16;
7570                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7571                 cfg->gsharedvt_info = info;
7572
7573                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7574                 /* prevent it from being register allocated */
7575                 //var->flags |= MONO_INST_VOLATILE;
7576                 cfg->gsharedvt_info_var = var;
7577
7578                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7579                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7580
7581                 /* Allocate locals */
7582                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7583                 /* prevent it from being register allocated */
7584                 //locals_var->flags |= MONO_INST_VOLATILE;
7585                 cfg->gsharedvt_locals_var = locals_var;
7586
7587                 dreg = alloc_ireg (cfg);
7588                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7589
7590                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7591                 ins->dreg = locals_var->dreg;
7592                 ins->sreg1 = dreg;
7593                 MONO_ADD_INS (cfg->cbb, ins);
7594                 cfg->gsharedvt_locals_var_ins = ins;
7595
7596                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7597                 /*
7598                 if (init_locals)
7599                         ins->flags |= MONO_INST_INIT;
7600                 */
7601         }
7602
7603         if (mono_security_core_clr_enabled ()) {
7604                 /* check if this is native code, e.g. an icall or a p/invoke */
7605                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7606                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7607                         if (wrapped) {
7608                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7609                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7610
7611                                 /* if this ia a native call then it can only be JITted from platform code */
7612                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7613                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7614                                                 MonoException *ex = icall ? mono_get_exception_security () :
7615                                                         mono_get_exception_method_access ();
7616                                                 emit_throw_exception (cfg, ex);
7617                                         }
7618                                 }
7619                         }
7620                 }
7621         }
7622
7623         CHECK_CFG_EXCEPTION;
7624
7625         if (header->code_size == 0)
7626                 UNVERIFIED;
7627
7628         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7629                 ip = err_pos;
7630                 UNVERIFIED;
7631         }
7632
7633         if (cfg->method == method)
7634                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7635
7636         for (n = 0; n < header->num_locals; ++n) {
7637                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7638                         UNVERIFIED;
7639         }
7640         class_inits = NULL;
7641
7642         /* We force the vtable variable here for all shared methods
7643            for the possibility that they might show up in a stack
7644            trace where their exact instantiation is needed. */
7645         if (cfg->gshared && method == cfg->method) {
7646                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7647                                 mini_method_get_context (method)->method_inst ||
7648                                 method->klass->valuetype) {
7649                         mono_get_vtable_var (cfg);
7650                 } else {
7651                         /* FIXME: Is there a better way to do this?
7652                            We need the variable live for the duration
7653                            of the whole method. */
7654                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7655                 }
7656         }
7657
7658         /* add a check for this != NULL to inlined methods */
7659         if (is_virtual_call) {
7660                 MonoInst *arg_ins;
7661
7662                 NEW_ARGLOAD (cfg, arg_ins, 0);
7663                 MONO_ADD_INS (cfg->cbb, arg_ins);
7664                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7665         }
7666
7667         skip_dead_blocks = !dont_verify;
7668         if (skip_dead_blocks) {
7669                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7670                 CHECK_CFG_ERROR;
7671                 g_assert (bb);
7672         }
7673
7674         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7675         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7676
7677         ins_flag = 0;
7678         start_new_bblock = 0;
7679         while (ip < end) {
7680                 if (cfg->method == method)
7681                         cfg->real_offset = ip - header->code;
7682                 else
7683                         cfg->real_offset = inline_offset;
7684                 cfg->ip = ip;
7685
7686                 context_used = 0;
7687
7688                 if (start_new_bblock) {
7689                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7690                         if (start_new_bblock == 2) {
7691                                 g_assert (ip == tblock->cil_code);
7692                         } else {
7693                                 GET_BBLOCK (cfg, tblock, ip);
7694                         }
7695                         cfg->cbb->next_bb = tblock;
7696                         cfg->cbb = tblock;
7697                         start_new_bblock = 0;
7698                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7699                                 if (cfg->verbose_level > 3)
7700                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7701                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7702                                 *sp++ = ins;
7703                         }
7704                         if (class_inits)
7705                                 g_slist_free (class_inits);
7706                         class_inits = NULL;
7707                 } else {
7708                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7709                                 link_bblock (cfg, cfg->cbb, tblock);
7710                                 if (sp != stack_start) {
7711                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7712                                         sp = stack_start;
7713                                         CHECK_UNVERIFIABLE (cfg);
7714                                 }
7715                                 cfg->cbb->next_bb = tblock;
7716                                 cfg->cbb = tblock;
7717                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7718                                         if (cfg->verbose_level > 3)
7719                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7720                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7721                                         *sp++ = ins;
7722                                 }
7723                                 g_slist_free (class_inits);
7724                                 class_inits = NULL;
7725                         }
7726                 }
7727
7728                 if (skip_dead_blocks) {
7729                         int ip_offset = ip - header->code;
7730
7731                         if (ip_offset == bb->end)
7732                                 bb = bb->next;
7733
7734                         if (bb->dead) {
7735                                 int op_size = mono_opcode_size (ip, end);
7736                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7737
7738                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7739
7740                                 if (ip_offset + op_size == bb->end) {
7741                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7742                                         MONO_ADD_INS (cfg->cbb, ins);
7743                                         start_new_bblock = 1;
7744                                 }
7745
7746                                 ip += op_size;
7747                                 continue;
7748                         }
7749                 }
7750                 /*
7751                  * Sequence points are points where the debugger can place a breakpoint.
7752                  * Currently, we generate these automatically at points where the IL
7753                  * stack is empty.
7754                  */
7755                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7756                         /*
7757                          * Make methods interruptable at the beginning, and at the targets of
7758                          * backward branches.
7759                          * Also, do this at the start of every bblock in methods with clauses too,
7760                          * to be able to handle instructions with inprecise control flow like
7761                          * throw/endfinally.
7762                          * Backward branches are handled at the end of method-to-ir ().
7763                          */
7764                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7765                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7766
7767                         /* Avoid sequence points on empty IL like .volatile */
7768                         // FIXME: Enable this
7769                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7770                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7771                         if ((sp != stack_start) && !sym_seq_point)
7772                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7773                         MONO_ADD_INS (cfg->cbb, ins);
7774
7775                         if (sym_seq_points)
7776                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7777
7778                         if ((cfg->method == method) && cfg->coverage_info) {
7779                                 guint32 cil_offset = ip - header->code;
7780                                 gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7781                                 cfg->coverage_info->data [cil_offset].cil_code = ip;
7782
7783                                 if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7784                                         MonoInst *one_ins, *load_ins;
7785
7786                                         EMIT_NEW_PCONST (cfg, load_ins, counter);
7787                                         EMIT_NEW_ICONST (cfg, one_ins, 1);
7788                                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7789                                         ins->dreg = mono_alloc_ireg (cfg);
7790                                         ins->inst_basereg = load_ins->dreg;
7791                                         ins->inst_offset = 0;
7792                                         ins->sreg2 = one_ins->dreg;
7793                                         ins->type = STACK_I4;
7794                                         MONO_ADD_INS (cfg->cbb, ins);
7795                                 } else {
7796                                         EMIT_NEW_PCONST (cfg, ins, counter);
7797                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7798                                 }
7799                         }
7800                 }
7801
7802                 cfg->cbb->real_offset = cfg->real_offset;
7803
7804                 if (cfg->verbose_level > 3)
7805                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7806
7807                 switch (*ip) {
7808                 case CEE_NOP:
7809                         if (seq_points && !sym_seq_points && sp != stack_start) {
7810                                 /*
7811                                  * The C# compiler uses these nops to notify the JIT that it should
7812                                  * insert seq points.
7813                                  */
7814                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7815                                 MONO_ADD_INS (cfg->cbb, ins);
7816                         }
7817                         if (cfg->keep_cil_nops)
7818                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7819                         else
7820                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7821                         ip++;
7822                         MONO_ADD_INS (cfg->cbb, ins);
7823                         break;
7824                 case CEE_BREAK:
7825                         if (mini_should_insert_breakpoint (cfg->method)) {
7826                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7827                         } else {
7828                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7829                         }
7830                         ip++;
7831                         MONO_ADD_INS (cfg->cbb, ins);
7832                         break;
7833                 case CEE_LDARG_0:
7834                 case CEE_LDARG_1:
7835                 case CEE_LDARG_2:
7836                 case CEE_LDARG_3:
7837                         CHECK_STACK_OVF (1);
7838                         n = (*ip)-CEE_LDARG_0;
7839                         CHECK_ARG (n);
7840                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7841                         ip++;
7842                         *sp++ = ins;
7843                         break;
7844                 case CEE_LDLOC_0:
7845                 case CEE_LDLOC_1:
7846                 case CEE_LDLOC_2:
7847                 case CEE_LDLOC_3:
7848                         CHECK_STACK_OVF (1);
7849                         n = (*ip)-CEE_LDLOC_0;
7850                         CHECK_LOCAL (n);
7851                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7852                         ip++;
7853                         *sp++ = ins;
7854                         break;
7855                 case CEE_STLOC_0:
7856                 case CEE_STLOC_1:
7857                 case CEE_STLOC_2:
7858                 case CEE_STLOC_3: {
7859                         CHECK_STACK (1);
7860                         n = (*ip)-CEE_STLOC_0;
7861                         CHECK_LOCAL (n);
7862                         --sp;
7863                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7864                                 UNVERIFIED;
7865                         emit_stloc_ir (cfg, sp, header, n);
7866                         ++ip;
7867                         inline_costs += 1;
7868                         break;
7869                         }
7870                 case CEE_LDARG_S:
7871                         CHECK_OPSIZE (2);
7872                         CHECK_STACK_OVF (1);
7873                         n = ip [1];
7874                         CHECK_ARG (n);
7875                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7876                         *sp++ = ins;
7877                         ip += 2;
7878                         break;
7879                 case CEE_LDARGA_S:
7880                         CHECK_OPSIZE (2);
7881                         CHECK_STACK_OVF (1);
7882                         n = ip [1];
7883                         CHECK_ARG (n);
7884                         NEW_ARGLOADA (cfg, ins, n);
7885                         MONO_ADD_INS (cfg->cbb, ins);
7886                         *sp++ = ins;
7887                         ip += 2;
7888                         break;
7889                 case CEE_STARG_S:
7890                         CHECK_OPSIZE (2);
7891                         CHECK_STACK (1);
7892                         --sp;
7893                         n = ip [1];
7894                         CHECK_ARG (n);
7895                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7896                                 UNVERIFIED;
7897                         emit_starg_ir (cfg, sp, n);
7898                         ip += 2;
7899                         break;
7900                 case CEE_LDLOC_S:
7901                         CHECK_OPSIZE (2);
7902                         CHECK_STACK_OVF (1);
7903                         n = ip [1];
7904                         CHECK_LOCAL (n);
7905                         if ((ip [2] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 2) && MONO_TYPE_ISSTRUCT (header->locals [n])) {
7906                                 /* Avoid loading a struct just to load one of its fields */
7907                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
7908                         } else {
7909                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
7910                         }
7911                         *sp++ = ins;
7912                         ip += 2;
7913                         break;
7914                 case CEE_LDLOCA_S: {
7915                         unsigned char *tmp_ip;
7916                         CHECK_OPSIZE (2);
7917                         CHECK_STACK_OVF (1);
7918                         CHECK_LOCAL (ip [1]);
7919
7920                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7921                                 ip = tmp_ip;
7922                                 inline_costs += 1;
7923                                 break;
7924                         }
7925
7926                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7927                         *sp++ = ins;
7928                         ip += 2;
7929                         break;
7930                 }
7931                 case CEE_STLOC_S:
7932                         CHECK_OPSIZE (2);
7933                         CHECK_STACK (1);
7934                         --sp;
7935                         CHECK_LOCAL (ip [1]);
7936                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7937                                 UNVERIFIED;
7938                         emit_stloc_ir (cfg, sp, header, ip [1]);
7939                         ip += 2;
7940                         inline_costs += 1;
7941                         break;
7942                 case CEE_LDNULL:
7943                         CHECK_STACK_OVF (1);
7944                         EMIT_NEW_PCONST (cfg, ins, NULL);
7945                         ins->type = STACK_OBJ;
7946                         ++ip;
7947                         *sp++ = ins;
7948                         break;
7949                 case CEE_LDC_I4_M1:
7950                         CHECK_STACK_OVF (1);
7951                         EMIT_NEW_ICONST (cfg, ins, -1);
7952                         ++ip;
7953                         *sp++ = ins;
7954                         break;
7955                 case CEE_LDC_I4_0:
7956                 case CEE_LDC_I4_1:
7957                 case CEE_LDC_I4_2:
7958                 case CEE_LDC_I4_3:
7959                 case CEE_LDC_I4_4:
7960                 case CEE_LDC_I4_5:
7961                 case CEE_LDC_I4_6:
7962                 case CEE_LDC_I4_7:
7963                 case CEE_LDC_I4_8:
7964                         CHECK_STACK_OVF (1);
7965                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7966                         ++ip;
7967                         *sp++ = ins;
7968                         break;
7969                 case CEE_LDC_I4_S:
7970                         CHECK_OPSIZE (2);
7971                         CHECK_STACK_OVF (1);
7972                         ++ip;
7973                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7974                         ++ip;
7975                         *sp++ = ins;
7976                         break;
7977                 case CEE_LDC_I4:
7978                         CHECK_OPSIZE (5);
7979                         CHECK_STACK_OVF (1);
7980                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7981                         ip += 5;
7982                         *sp++ = ins;
7983                         break;
7984                 case CEE_LDC_I8:
7985                         CHECK_OPSIZE (9);
7986                         CHECK_STACK_OVF (1);
7987                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7988                         ins->type = STACK_I8;
7989                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7990                         ++ip;
7991                         ins->inst_l = (gint64)read64 (ip);
7992                         MONO_ADD_INS (cfg->cbb, ins);
7993                         ip += 8;
7994                         *sp++ = ins;
7995                         break;
7996                 case CEE_LDC_R4: {
7997                         float *f;
7998                         gboolean use_aotconst = FALSE;
7999
8000 #ifdef TARGET_POWERPC
8001                         /* FIXME: Clean this up */
8002                         if (cfg->compile_aot)
8003                                 use_aotconst = TRUE;
8004 #endif
8005
8006                         /* FIXME: we should really allocate this only late in the compilation process */
8007                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8008                         CHECK_OPSIZE (5);
8009                         CHECK_STACK_OVF (1);
8010
8011                         if (use_aotconst) {
8012                                 MonoInst *cons;
8013                                 int dreg;
8014
8015                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8016
8017                                 dreg = alloc_freg (cfg);
8018                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8019                                 ins->type = cfg->r4_stack_type;
8020                         } else {
8021                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8022                                 ins->type = cfg->r4_stack_type;
8023                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8024                                 ins->inst_p0 = f;
8025                                 MONO_ADD_INS (cfg->cbb, ins);
8026                         }
8027                         ++ip;
8028                         readr4 (ip, f);
8029                         ip += 4;
8030                         *sp++ = ins;
8031                         break;
8032                 }
8033                 case CEE_LDC_R8: {
8034                         double *d;
8035                         gboolean use_aotconst = FALSE;
8036
8037 #ifdef TARGET_POWERPC
8038                         /* FIXME: Clean this up */
8039                         if (cfg->compile_aot)
8040                                 use_aotconst = TRUE;
8041 #endif
8042
8043                         /* FIXME: we should really allocate this only late in the compilation process */
8044                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8045                         CHECK_OPSIZE (9);
8046                         CHECK_STACK_OVF (1);
8047
8048                         if (use_aotconst) {
8049                                 MonoInst *cons;
8050                                 int dreg;
8051
8052                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8053
8054                                 dreg = alloc_freg (cfg);
8055                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8056                                 ins->type = STACK_R8;
8057                         } else {
8058                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8059                                 ins->type = STACK_R8;
8060                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8061                                 ins->inst_p0 = d;
8062                                 MONO_ADD_INS (cfg->cbb, ins);
8063                         }
8064                         ++ip;
8065                         readr8 (ip, d);
8066                         ip += 8;
8067                         *sp++ = ins;
8068                         break;
8069                 }
8070                 case CEE_DUP: {
8071                         MonoInst *temp, *store;
8072                         CHECK_STACK (1);
8073                         CHECK_STACK_OVF (1);
8074                         sp--;
8075                         ins = *sp;
8076
8077                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8078                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8079
8080                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8081                         *sp++ = ins;
8082
8083                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8084                         *sp++ = ins;
8085
8086                         ++ip;
8087                         inline_costs += 2;
8088                         break;
8089                 }
8090                 case CEE_POP:
8091                         CHECK_STACK (1);
8092                         ip++;
8093                         --sp;
8094
8095 #ifdef TARGET_X86
8096                         if (sp [0]->type == STACK_R8)
8097                                 /* we need to pop the value from the x86 FP stack */
8098                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8099 #endif
8100                         break;
8101                 case CEE_JMP: {
8102                         MonoCallInst *call;
8103                         MonoMethodSignature *fsig;
8104                         int i, n;
8105
8106                         INLINE_FAILURE ("jmp");
8107                         GSHAREDVT_FAILURE (*ip);
8108
8109                         CHECK_OPSIZE (5);
8110                         if (stack_start != sp)
8111                                 UNVERIFIED;
8112                         token = read32 (ip + 1);
8113                         /* FIXME: check the signature matches */
8114                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8115                         CHECK_CFG_ERROR;
8116
8117                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8118                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8119
8120                         mini_profiler_emit_tail_call (cfg, cmethod);
8121
8122                         fsig = mono_method_signature (cmethod);
8123                         n = fsig->param_count + fsig->hasthis;
8124                         if (cfg->llvm_only) {
8125                                 MonoInst **args;
8126
8127                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8128                                 for (i = 0; i < n; ++i)
8129                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8130                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8131                                 /*
8132                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8133                                  * have to emit a normal return since llvm expects it.
8134                                  */
8135                                 if (cfg->ret)
8136                                         emit_setret (cfg, ins);
8137                                 MONO_INST_NEW (cfg, ins, OP_BR);
8138                                 ins->inst_target_bb = end_bblock;
8139                                 MONO_ADD_INS (cfg->cbb, ins);
8140                                 link_bblock (cfg, cfg->cbb, end_bblock);
8141                                 ip += 5;
8142                                 break;
8143                         } else if (cfg->backend->have_op_tail_call) {
8144                                 /* Handle tail calls similarly to calls */
8145                                 DISABLE_AOT (cfg);
8146
8147                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8148                                 call->method = cmethod;
8149                                 call->tail_call = TRUE;
8150                                 call->signature = mono_method_signature (cmethod);
8151                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8152                                 call->inst.inst_p0 = cmethod;
8153                                 for (i = 0; i < n; ++i)
8154                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8155
8156                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8157                                         call->vret_var = cfg->vret_addr;
8158
8159                                 mono_arch_emit_call (cfg, call);
8160                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8161                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8162                         } else {
8163                                 for (i = 0; i < num_args; ++i)
8164                                         /* Prevent arguments from being optimized away */
8165                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8166
8167                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8168                                 ins = (MonoInst*)call;
8169                                 ins->inst_p0 = cmethod;
8170                                 MONO_ADD_INS (cfg->cbb, ins);
8171                         }
8172
8173                         ip += 5;
8174                         start_new_bblock = 1;
8175                         break;
8176                 }
8177                 case CEE_CALLI: {
8178                         MonoInst *addr;
8179                         MonoMethodSignature *fsig;
8180
8181                         CHECK_OPSIZE (5);
8182                         token = read32 (ip + 1);
8183
8184                         ins = NULL;
8185
8186                         //GSHAREDVT_FAILURE (*ip);
8187                         cmethod = NULL;
8188                         CHECK_STACK (1);
8189                         --sp;
8190                         addr = *sp;
8191                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8192                         CHECK_CFG_ERROR;
8193
8194                         if (method->dynamic && fsig->pinvoke) {
8195                                 MonoInst *args [3];
8196
8197                                 /*
8198                                  * This is a call through a function pointer using a pinvoke
8199                                  * signature. Have to create a wrapper and call that instead.
8200                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8201                                  * instead based on the signature.
8202                                  */
8203                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8204                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8205                                 args [2] = addr;
8206                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8207                         }
8208
8209                         n = fsig->param_count + fsig->hasthis;
8210
8211                         CHECK_STACK (n);
8212
8213                         //g_assert (!virtual_ || fsig->hasthis);
8214
8215                         sp -= n;
8216
8217                         inline_costs += 10 * num_calls++;
8218
8219                         /*
8220                          * Making generic calls out of gsharedvt methods.
8221                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8222                          * patching gshared method addresses into a gsharedvt method.
8223                          */
8224                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8225                                 /*
8226                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8227                                  */
8228                                 MonoInst *callee = addr;
8229
8230                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8231                                         /* Not tested */
8232                                         GSHAREDVT_FAILURE (*ip);
8233
8234                                 if (cfg->llvm_only)
8235                                         // FIXME:
8236                                         GSHAREDVT_FAILURE (*ip);
8237
8238                                 addr = emit_get_rgctx_sig (cfg, context_used,
8239                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8240                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8241                                 goto calli_end;
8242                         }
8243
8244                         /* Prevent inlining of methods with indirect calls */
8245                         INLINE_FAILURE ("indirect call");
8246
8247                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8248                                 MonoJumpInfoType info_type;
8249                                 gpointer info_data;
8250
8251                                 /*
8252                                  * Instead of emitting an indirect call, emit a direct call
8253                                  * with the contents of the aotconst as the patch info.
8254                                  */
8255                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8256                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8257                                         info_data = addr->inst_p0;
8258                                 } else {
8259                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8260                                         info_data = addr->inst_right->inst_left;
8261                                 }
8262
8263                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8264                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8265                                         NULLIFY_INS (addr);
8266                                         goto calli_end;
8267                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8268                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8269                                         NULLIFY_INS (addr);
8270                                         goto calli_end;
8271                                 }
8272                         }
8273                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8274
8275                         calli_end:
8276
8277                         /* End of call, INS should contain the result of the call, if any */
8278
8279                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8280                                 g_assert (ins);
8281                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8282                         }
8283
8284                         CHECK_CFG_EXCEPTION;
8285
8286                         ip += 5;
8287                         ins_flag = 0;
8288                         constrained_class = NULL;
8289                         break;
8290                 }
8291                 case CEE_CALL:
8292                 case CEE_CALLVIRT: {
8293                         MonoInst *addr = NULL;
8294                         MonoMethodSignature *fsig = NULL;
8295                         int array_rank = 0;
8296                         int virtual_ = *ip == CEE_CALLVIRT;
8297                         gboolean pass_imt_from_rgctx = FALSE;
8298                         MonoInst *imt_arg = NULL;
8299                         MonoInst *keep_this_alive = NULL;
8300                         gboolean pass_vtable = FALSE;
8301                         gboolean pass_mrgctx = FALSE;
8302                         MonoInst *vtable_arg = NULL;
8303                         gboolean check_this = FALSE;
8304                         gboolean supported_tail_call = FALSE;
8305                         gboolean tail_call = FALSE;
8306                         gboolean need_seq_point = FALSE;
8307                         guint32 call_opcode = *ip;
8308                         gboolean emit_widen = TRUE;
8309                         gboolean push_res = TRUE;
8310                         gboolean skip_ret = FALSE;
8311                         gboolean delegate_invoke = FALSE;
8312                         gboolean direct_icall = FALSE;
8313                         gboolean constrained_partial_call = FALSE;
8314                         MonoMethod *cil_method;
8315
8316                         CHECK_OPSIZE (5);
8317                         token = read32 (ip + 1);
8318
8319                         ins = NULL;
8320
8321                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8322                         CHECK_CFG_ERROR;
8323
8324                         cil_method = cmethod;
8325
8326                         if (constrained_class) {
8327                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8328                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8329                                                 g_assert (!cmethod->klass->valuetype);
8330                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8331                                                         constrained_partial_call = TRUE;
8332                                         }
8333                                 }
8334
8335                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8336                                         if (cfg->verbose_level > 2)
8337                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8338                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8339                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8340                                                   cfg->gshared)) {
8341                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8342                                                 CHECK_CFG_ERROR;
8343                                         }
8344                                 } else {
8345                                         if (cfg->verbose_level > 2)
8346                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8347
8348                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8349                                                 /*
8350                                                  * This is needed since get_method_constrained can't find
8351                                                  * the method in klass representing a type var.
8352                                                  * The type var is guaranteed to be a reference type in this
8353                                                  * case.
8354                                                  */
8355                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8356                                                         g_assert (!cmethod->klass->valuetype);
8357                                         } else {
8358                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8359                                                 CHECK_CFG_ERROR;
8360                                         }
8361                                 }
8362
8363                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8364                                         /* Use the corresponding method from the base type to avoid boxing */
8365                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8366                                         g_assert (base_type);
8367                                         constrained_class = mono_class_from_mono_type (base_type);
8368                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8369                                         g_assert (cmethod);
8370                                 }
8371                         }
8372
8373                         if (!dont_verify && !cfg->skip_visibility) {
8374                                 MonoMethod *target_method = cil_method;
8375                                 if (method->is_inflated) {
8376                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8377                                         CHECK_CFG_ERROR;
8378                                 }
8379                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8380                                         !mono_method_can_access_method (method, cil_method))
8381                                         emit_method_access_failure (cfg, method, cil_method);
8382                         }
8383
8384                         if (mono_security_core_clr_enabled ())
8385                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8386
8387                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8388                                 /* MS.NET seems to silently convert this to a callvirt */
8389                                 virtual_ = 1;
8390
8391                         {
8392                                 /*
8393                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8394                                  * converts to a callvirt.
8395                                  *
8396                                  * tests/bug-515884.il is an example of this behavior
8397                                  */
8398                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8399                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8400                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8401                                         virtual_ = 1;
8402                         }
8403
8404                         if (!cmethod->klass->inited)
8405                                 if (!mono_class_init (cmethod->klass))
8406                                         TYPE_LOAD_ERROR (cmethod->klass);
8407
8408                         fsig = mono_method_signature (cmethod);
8409                         if (!fsig)
8410                                 LOAD_ERROR;
8411                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8412                                 mini_class_is_system_array (cmethod->klass)) {
8413                                 array_rank = cmethod->klass->rank;
8414                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8415                                 direct_icall = TRUE;
8416                         } else if (fsig->pinvoke) {
8417                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8418                                 fsig = mono_method_signature (wrapper);
8419                         } else if (constrained_class) {
8420                         } else {
8421                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8422                                 CHECK_CFG_ERROR;
8423                         }
8424
8425                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8426                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8427
8428                         /* See code below */
8429                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8430                                 MonoBasicBlock *tbb;
8431
8432                                 GET_BBLOCK (cfg, tbb, ip + 5);
8433                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8434                                         /*
8435                                          * We want to extend the try block to cover the call, but we can't do it if the
8436                                          * call is made directly since its followed by an exception check.
8437                                          */
8438                                         direct_icall = FALSE;
8439                                 }
8440                         }
8441
8442                         mono_save_token_info (cfg, image, token, cil_method);
8443
8444                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8445                                 need_seq_point = TRUE;
8446
8447                         /* Don't support calls made using type arguments for now */
8448                         /*
8449                           if (cfg->gsharedvt) {
8450                           if (mini_is_gsharedvt_signature (fsig))
8451                           GSHAREDVT_FAILURE (*ip);
8452                           }
8453                         */
8454
8455                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8456                                 g_assert_not_reached ();
8457
8458                         n = fsig->param_count + fsig->hasthis;
8459
8460                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8461                                 UNVERIFIED;
8462
8463                         if (!cfg->gshared)
8464                                 g_assert (!mono_method_check_context_used (cmethod));
8465
8466                         CHECK_STACK (n);
8467
8468                         //g_assert (!virtual_ || fsig->hasthis);
8469
8470                         sp -= n;
8471
8472                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8473                                 cfg->cbb->out_of_line = TRUE;
8474
8475                         /*
8476                          * We have the `constrained.' prefix opcode.
8477                          */
8478                         if (constrained_class) {
8479                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8480                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8481                                                 /* The 'Own method' case below */
8482                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8483                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8484                                         } else {
8485                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8486                                                 CHECK_CFG_EXCEPTION;
8487                                                 g_assert (ins);
8488                                                 goto call_end;
8489                                         }
8490                                 }
8491
8492                                 if (constrained_partial_call) {
8493                                         gboolean need_box = TRUE;
8494
8495                                         /*
8496                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8497                                          * called method is not known at compile time either. The called method could end up being
8498                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8499                                          * to box the receiver.
8500                                          * A simple solution would be to box always and make a normal virtual call, but that would
8501                                          * be bad performance wise.
8502                                          */
8503                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8504                                                 /*
8505                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8506                                                  */
8507                                                 need_box = FALSE;
8508                                         }
8509
8510                                         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)) {
8511                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8512                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8513                                                 ins->klass = constrained_class;
8514                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8515                                                 CHECK_CFG_EXCEPTION;
8516                                         } else if (need_box) {
8517                                                 MonoInst *box_type;
8518                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8519                                                 MonoInst *nonbox_call;
8520
8521                                                 /*
8522                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8523                                                  * if needed.
8524                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8525                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8526                                                  */
8527                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8528
8529                                                 NEW_BBLOCK (cfg, is_ref_bb);
8530                                                 NEW_BBLOCK (cfg, end_bb);
8531
8532                                                 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);
8533                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8534                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8535
8536                                                 /* Non-ref case */
8537                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8538
8539                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8540
8541                                                 /* Ref case */
8542                                                 MONO_START_BB (cfg, is_ref_bb);
8543                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8544                                                 ins->klass = constrained_class;
8545                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8546                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8547
8548                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8549
8550                                                 MONO_START_BB (cfg, end_bb);
8551                                                 cfg->cbb = end_bb;
8552
8553                                                 nonbox_call->dreg = ins->dreg;
8554                                                 goto call_end;
8555                                         } else {
8556                                                 g_assert (mono_class_is_interface (cmethod->klass));
8557                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8558                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8559                                                 goto call_end;
8560                                         }
8561                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8562                                         /*
8563                                          * The type parameter is instantiated as a valuetype,
8564                                          * but that type doesn't override the method we're
8565                                          * calling, so we need to box `this'.
8566                                          */
8567                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8568                                         ins->klass = constrained_class;
8569                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8570                                         CHECK_CFG_EXCEPTION;
8571                                 } else if (!constrained_class->valuetype) {
8572                                         int dreg = alloc_ireg_ref (cfg);
8573
8574                                         /*
8575                                          * The type parameter is instantiated as a reference
8576                                          * type.  We have a managed pointer on the stack, so
8577                                          * we need to dereference it here.
8578                                          */
8579                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8580                                         ins->type = STACK_OBJ;
8581                                         sp [0] = ins;
8582                                 } else {
8583                                         if (cmethod->klass->valuetype) {
8584                                                 /* Own method */
8585                                         } else {
8586                                                 /* Interface method */
8587                                                 int ioffset, slot;
8588
8589                                                 mono_class_setup_vtable (constrained_class);
8590                                                 CHECK_TYPELOAD (constrained_class);
8591                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8592                                                 if (ioffset == -1)
8593                                                         TYPE_LOAD_ERROR (constrained_class);
8594                                                 slot = mono_method_get_vtable_slot (cmethod);
8595                                                 if (slot == -1)
8596                                                         TYPE_LOAD_ERROR (cmethod->klass);
8597                                                 cmethod = constrained_class->vtable [ioffset + slot];
8598
8599                                                 if (cmethod->klass == mono_defaults.enum_class) {
8600                                                         /* Enum implements some interfaces, so treat this as the first case */
8601                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8602                                                         ins->klass = constrained_class;
8603                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8604                                                         CHECK_CFG_EXCEPTION;
8605                                                 }
8606                                         }
8607                                         virtual_ = 0;
8608                                 }
8609                                 constrained_class = NULL;
8610                         }
8611
8612                         if (check_call_signature (cfg, fsig, sp))
8613                                 UNVERIFIED;
8614
8615                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8616                                 delegate_invoke = TRUE;
8617
8618                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8619                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8620                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8621                                         emit_widen = FALSE;
8622                                 }
8623
8624                                 goto call_end;
8625                         }
8626
8627                         /*
8628                          * If the callee is a shared method, then its static cctor
8629                          * might not get called after the call was patched.
8630                          */
8631                         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)) {
8632                                 emit_class_init (cfg, cmethod->klass);
8633                                 CHECK_TYPELOAD (cmethod->klass);
8634                         }
8635
8636                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8637
8638                         if (cfg->gshared) {
8639                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8640
8641                                 context_used = mini_method_check_context_used (cfg, cmethod);
8642
8643                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8644                                         /* Generic method interface
8645                                            calls are resolved via a
8646                                            helper function and don't
8647                                            need an imt. */
8648                                         if (!cmethod_context || !cmethod_context->method_inst)
8649                                                 pass_imt_from_rgctx = TRUE;
8650                                 }
8651
8652                                 /*
8653                                  * If a shared method calls another
8654                                  * shared method then the caller must
8655                                  * have a generic sharing context
8656                                  * because the magic trampoline
8657                                  * requires it.  FIXME: We shouldn't
8658                                  * have to force the vtable/mrgctx
8659                                  * variable here.  Instead there
8660                                  * should be a flag in the cfg to
8661                                  * request a generic sharing context.
8662                                  */
8663                                 if (context_used &&
8664                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8665                                         mono_get_vtable_var (cfg);
8666                         }
8667
8668                         if (pass_vtable) {
8669                                 if (context_used) {
8670                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8671                                 } else {
8672                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8673
8674                                         CHECK_TYPELOAD (cmethod->klass);
8675                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8676                                 }
8677                         }
8678
8679                         if (pass_mrgctx) {
8680                                 g_assert (!vtable_arg);
8681
8682                                 if (!cfg->compile_aot) {
8683                                         /*
8684                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8685                                          * for type load errors before.
8686                                          */
8687                                         mono_class_setup_vtable (cmethod->klass);
8688                                         CHECK_TYPELOAD (cmethod->klass);
8689                                 }
8690
8691                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8692
8693                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8694                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8695                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8696                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8697                                         if (virtual_)
8698                                                 check_this = TRUE;
8699                                         virtual_ = 0;
8700                                 }
8701                         }
8702
8703                         if (pass_imt_from_rgctx) {
8704                                 g_assert (!pass_vtable);
8705
8706                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8707                                         cmethod, MONO_RGCTX_INFO_METHOD);
8708                         }
8709
8710                         if (check_this)
8711                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8712
8713                         /* Calling virtual generic methods */
8714                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8715                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8716                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8717                             fsig->generic_param_count &&
8718                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8719                                 !cfg->llvm_only) {
8720                                 MonoInst *this_temp, *this_arg_temp, *store;
8721                                 MonoInst *iargs [4];
8722
8723                                 g_assert (fsig->is_inflated);
8724
8725                                 /* Prevent inlining of methods that contain indirect calls */
8726                                 INLINE_FAILURE ("virtual generic call");
8727
8728                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8729                                         GSHAREDVT_FAILURE (*ip);
8730
8731                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8732                                         g_assert (!imt_arg);
8733                                         if (!context_used)
8734                                                 g_assert (cmethod->is_inflated);
8735                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8736                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8737                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8738                                 } else {
8739                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8740                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8741                                         MONO_ADD_INS (cfg->cbb, store);
8742
8743                                         /* FIXME: This should be a managed pointer */
8744                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8745
8746                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8747                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8748                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8749                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8750                                         addr = mono_emit_jit_icall (cfg,
8751                                                                                                 mono_helper_compile_generic_method, iargs);
8752
8753                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8754
8755                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8756                                 }
8757
8758                                 goto call_end;
8759                         }
8760
8761                         /*
8762                          * Implement a workaround for the inherent races involved in locking:
8763                          * Monitor.Enter ()
8764                          * try {
8765                          * } finally {
8766                          *    Monitor.Exit ()
8767                          * }
8768                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8769                          * try block, the Exit () won't be executed, see:
8770                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8771                          * To work around this, we extend such try blocks to include the last x bytes
8772                          * of the Monitor.Enter () call.
8773                          */
8774                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8775                                 MonoBasicBlock *tbb;
8776
8777                                 GET_BBLOCK (cfg, tbb, ip + 5);
8778                                 /*
8779                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8780                                  * from Monitor.Enter like ArgumentNullException.
8781                                  */
8782                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8783                                         /* Mark this bblock as needing to be extended */
8784                                         tbb->extend_try_block = TRUE;
8785                                 }
8786                         }
8787
8788                         /* Conversion to a JIT intrinsic */
8789                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8790                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8791                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8792                                         emit_widen = FALSE;
8793                                 }
8794                                 goto call_end;
8795                         }
8796                         CHECK_CFG_ERROR;
8797
8798                         /* Inlining */
8799                         if ((cfg->opt & MONO_OPT_INLINE) &&
8800                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8801                             mono_method_check_inlining (cfg, cmethod)) {
8802                                 int costs;
8803                                 gboolean always = FALSE;
8804
8805                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8806                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8807                                         /* Prevent inlining of methods that call wrappers */
8808                                         INLINE_FAILURE ("wrapper call");
8809                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8810                                         always = TRUE;
8811                                 }
8812
8813                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8814                                 if (costs) {
8815                                         cfg->real_offset += 5;
8816
8817                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8818                                                 /* *sp is already set by inline_method */
8819                                                 sp++;
8820                                                 push_res = FALSE;
8821                                         }
8822
8823                                         inline_costs += costs;
8824
8825                                         goto call_end;
8826                                 }
8827                         }
8828
8829                         /* Tail recursion elimination */
8830                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8831                                 gboolean has_vtargs = FALSE;
8832                                 int i;
8833
8834                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8835                                 INLINE_FAILURE ("tail call");
8836
8837                                 /* keep it simple */
8838                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8839                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8840                                                 has_vtargs = TRUE;
8841                                 }
8842
8843                                 if (!has_vtargs) {
8844                                         if (need_seq_point) {
8845                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8846                                                 need_seq_point = FALSE;
8847                                         }
8848                                         for (i = 0; i < n; ++i)
8849                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8850
8851                                         mini_profiler_emit_tail_call (cfg, cmethod);
8852
8853                                         MONO_INST_NEW (cfg, ins, OP_BR);
8854                                         MONO_ADD_INS (cfg->cbb, ins);
8855                                         tblock = start_bblock->out_bb [0];
8856                                         link_bblock (cfg, cfg->cbb, tblock);
8857                                         ins->inst_target_bb = tblock;
8858                                         start_new_bblock = 1;
8859
8860                                         /* skip the CEE_RET, too */
8861                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8862                                                 skip_ret = TRUE;
8863                                         push_res = FALSE;
8864                                         goto call_end;
8865                                 }
8866                         }
8867
8868                         inline_costs += 10 * num_calls++;
8869
8870                         /*
8871                          * Synchronized wrappers.
8872                          * Its hard to determine where to replace a method with its synchronized
8873                          * wrapper without causing an infinite recursion. The current solution is
8874                          * to add the synchronized wrapper in the trampolines, and to
8875                          * change the called method to a dummy wrapper, and resolve that wrapper
8876                          * to the real method in mono_jit_compile_method ().
8877                          */
8878                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8879                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8880                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8881                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8882                         }
8883
8884                         /*
8885                          * Making generic calls out of gsharedvt methods.
8886                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8887                          * patching gshared method addresses into a gsharedvt method.
8888                          */
8889                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8890                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8891                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8892                                 MonoRgctxInfoType info_type;
8893
8894                                 if (virtual_) {
8895                                         //if (mono_class_is_interface (cmethod->klass))
8896                                                 //GSHAREDVT_FAILURE (*ip);
8897                                         // disable for possible remoting calls
8898                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8899                                                 GSHAREDVT_FAILURE (*ip);
8900                                         if (fsig->generic_param_count) {
8901                                                 /* virtual generic call */
8902                                                 g_assert (!imt_arg);
8903                                                 /* Same as the virtual generic case above */
8904                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8905                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8906                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8907                                                 vtable_arg = NULL;
8908                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8909                                                 /* This can happen when we call a fully instantiated iface method */
8910                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8911                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8912                                                 vtable_arg = NULL;
8913                                         }
8914                                 }
8915
8916                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8917                                         keep_this_alive = sp [0];
8918
8919                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8920                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8921                                 else
8922                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8923                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8924
8925                                 if (cfg->llvm_only) {
8926                                         // FIXME: Avoid initializing vtable_arg
8927                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8928                                 } else {
8929                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8930                                 }
8931                                 goto call_end;
8932                         }
8933
8934                         /* Generic sharing */
8935
8936                         /*
8937                          * Use this if the callee is gsharedvt sharable too, since
8938                          * at runtime we might find an instantiation so the call cannot
8939                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8940                          */
8941                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8942                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8943                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8944                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8945                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8946                                 INLINE_FAILURE ("gshared");
8947
8948                                 g_assert (cfg->gshared && cmethod);
8949                                 g_assert (!addr);
8950
8951                                 /*
8952                                  * We are compiling a call to a
8953                                  * generic method from shared code,
8954                                  * which means that we have to look up
8955                                  * the method in the rgctx and do an
8956                                  * indirect call.
8957                                  */
8958                                 if (fsig->hasthis)
8959                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8960
8961                                 if (cfg->llvm_only) {
8962                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8963                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8964                                         else
8965                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8966                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8967                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8968                                 } else {
8969                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8970                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8971                                 }
8972                                 goto call_end;
8973                         }
8974
8975                         /* Direct calls to icalls */
8976                         if (direct_icall) {
8977                                 MonoMethod *wrapper;
8978                                 int costs;
8979
8980                                 /* Inline the wrapper */
8981                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8982
8983                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8984                                 g_assert (costs > 0);
8985                                 cfg->real_offset += 5;
8986
8987                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8988                                         /* *sp is already set by inline_method */
8989                                         sp++;
8990                                         push_res = FALSE;
8991                                 }
8992
8993                                 inline_costs += costs;
8994
8995                                 goto call_end;
8996                         }
8997
8998                         /* Array methods */
8999                         if (array_rank) {
9000                                 MonoInst *addr;
9001
9002                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9003                                         MonoInst *val = sp [fsig->param_count];
9004
9005                                         if (val->type == STACK_OBJ) {
9006                                                 MonoInst *iargs [2];
9007
9008                                                 iargs [0] = sp [0];
9009                                                 iargs [1] = val;
9010
9011                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9012                                         }
9013
9014                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9015                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9016                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
9017                                                 mini_emit_write_barrier (cfg, addr, val);
9018                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9019                                                 GSHAREDVT_FAILURE (*ip);
9020                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9021                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9022
9023                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9024                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9025                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9026                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9027                                         CHECK_TYPELOAD (cmethod->klass);
9028
9029                                         readonly = FALSE;
9030                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9031                                         ins = addr;
9032                                 } else {
9033                                         g_assert_not_reached ();
9034                                 }
9035
9036                                 emit_widen = FALSE;
9037                                 goto call_end;
9038                         }
9039
9040                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9041                         if (ins)
9042                                 goto call_end;
9043
9044                         /* Tail prefix / tail call optimization */
9045
9046                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9047                         /* FIXME: runtime generic context pointer for jumps? */
9048                         /* FIXME: handle this for generic sharing eventually */
9049                         if ((ins_flag & MONO_INST_TAILCALL) &&
9050                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9051                                 supported_tail_call = TRUE;
9052
9053                         if (supported_tail_call) {
9054                                 MonoCallInst *call;
9055
9056                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9057                                 INLINE_FAILURE ("tail call");
9058
9059                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9060
9061                                 if (cfg->backend->have_op_tail_call) {
9062                                         /* Handle tail calls similarly to normal calls */
9063                                         tail_call = TRUE;
9064                                 } else {
9065                                         mini_profiler_emit_tail_call (cfg, cmethod);
9066
9067                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9068                                         call->tail_call = TRUE;
9069                                         call->method = cmethod;
9070                                         call->signature = mono_method_signature (cmethod);
9071
9072                                         /*
9073                                          * We implement tail calls by storing the actual arguments into the
9074                                          * argument variables, then emitting a CEE_JMP.
9075                                          */
9076                                         for (i = 0; i < n; ++i) {
9077                                                 /* Prevent argument from being register allocated */
9078                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9079                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9080                                         }
9081                                         ins = (MonoInst*)call;
9082                                         ins->inst_p0 = cmethod;
9083                                         ins->inst_p1 = arg_array [0];
9084                                         MONO_ADD_INS (cfg->cbb, ins);
9085                                         link_bblock (cfg, cfg->cbb, end_bblock);
9086                                         start_new_bblock = 1;
9087
9088                                         // FIXME: Eliminate unreachable epilogs
9089
9090                                         /*
9091                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9092                                          * only reachable from this call.
9093                                          */
9094                                         GET_BBLOCK (cfg, tblock, ip + 5);
9095                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9096                                                 skip_ret = TRUE;
9097                                         push_res = FALSE;
9098
9099                                         goto call_end;
9100                                 }
9101                         }
9102
9103                         /*
9104                          * Virtual calls in llvm-only mode.
9105                          */
9106                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9107                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9108                                 goto call_end;
9109                         }
9110
9111                         /* Common call */
9112                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9113                                 INLINE_FAILURE ("call");
9114                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9115                                                                                           imt_arg, vtable_arg);
9116
9117                         if (tail_call && !cfg->llvm_only) {
9118                                 link_bblock (cfg, cfg->cbb, end_bblock);
9119                                 start_new_bblock = 1;
9120
9121                                 // FIXME: Eliminate unreachable epilogs
9122
9123                                 /*
9124                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9125                                  * only reachable from this call.
9126                                  */
9127                                 GET_BBLOCK (cfg, tblock, ip + 5);
9128                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9129                                         skip_ret = TRUE;
9130                                 push_res = FALSE;
9131                         }
9132
9133                         call_end:
9134
9135                         /* End of call, INS should contain the result of the call, if any */
9136
9137                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9138                                 g_assert (ins);
9139                                 if (emit_widen)
9140                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9141                                 else
9142                                         *sp++ = ins;
9143                         }
9144
9145                         if (keep_this_alive) {
9146                                 MonoInst *dummy_use;
9147
9148                                 /* See mono_emit_method_call_full () */
9149                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9150                         }
9151
9152                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9153                                 /*
9154                                  * Clang can convert these calls to tail calls which screw up the stack
9155                                  * walk. This happens even when the -fno-optimize-sibling-calls
9156                                  * option is passed to clang.
9157                                  * Work around this by emitting a dummy call.
9158                                  */
9159                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9160                         }
9161
9162                         CHECK_CFG_EXCEPTION;
9163
9164                         ip += 5;
9165                         if (skip_ret) {
9166                                 g_assert (*ip == CEE_RET);
9167                                 ip += 1;
9168                         }
9169                         ins_flag = 0;
9170                         constrained_class = NULL;
9171                         if (need_seq_point)
9172                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9173                         break;
9174                 }
9175                 case CEE_RET:
9176                         mini_profiler_emit_leave (cfg, sig->ret->type != MONO_TYPE_VOID ? sp [-1] : NULL);
9177
9178                         if (cfg->method != method) {
9179                                 /* return from inlined method */
9180                                 /*
9181                                  * If in_count == 0, that means the ret is unreachable due to
9182                                  * being preceeded by a throw. In that case, inline_method () will
9183                                  * handle setting the return value
9184                                  * (test case: test_0_inline_throw ()).
9185                                  */
9186                                 if (return_var && cfg->cbb->in_count) {
9187                                         MonoType *ret_type = mono_method_signature (method)->ret;
9188
9189                                         MonoInst *store;
9190                                         CHECK_STACK (1);
9191                                         --sp;
9192
9193                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9194                                                 UNVERIFIED;
9195
9196                                         //g_assert (returnvar != -1);
9197                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9198                                         cfg->ret_var_set = TRUE;
9199                                 }
9200                         } else {
9201                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9202                                         emit_pop_lmf (cfg);
9203
9204                                 if (cfg->ret) {
9205                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9206
9207                                         if (seq_points && !sym_seq_points) {
9208                                                 /*
9209                                                  * Place a seq point here too even through the IL stack is not
9210                                                  * empty, so a step over on
9211                                                  * call <FOO>
9212                                                  * ret
9213                                                  * will work correctly.
9214                                                  */
9215                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9216                                                 MONO_ADD_INS (cfg->cbb, ins);
9217                                         }
9218
9219                                         g_assert (!return_var);
9220                                         CHECK_STACK (1);
9221                                         --sp;
9222
9223                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9224                                                 UNVERIFIED;
9225
9226                                         emit_setret (cfg, *sp);
9227                                 }
9228                         }
9229                         if (sp != stack_start)
9230                                 UNVERIFIED;
9231                         MONO_INST_NEW (cfg, ins, OP_BR);
9232                         ip++;
9233                         ins->inst_target_bb = end_bblock;
9234                         MONO_ADD_INS (cfg->cbb, ins);
9235                         link_bblock (cfg, cfg->cbb, end_bblock);
9236                         start_new_bblock = 1;
9237                         break;
9238                 case CEE_BR_S:
9239                         CHECK_OPSIZE (2);
9240                         MONO_INST_NEW (cfg, ins, OP_BR);
9241                         ip++;
9242                         target = ip + 1 + (signed char)(*ip);
9243                         ++ip;
9244                         GET_BBLOCK (cfg, tblock, target);
9245                         link_bblock (cfg, cfg->cbb, tblock);
9246                         ins->inst_target_bb = tblock;
9247                         if (sp != stack_start) {
9248                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9249                                 sp = stack_start;
9250                                 CHECK_UNVERIFIABLE (cfg);
9251                         }
9252                         MONO_ADD_INS (cfg->cbb, ins);
9253                         start_new_bblock = 1;
9254                         inline_costs += BRANCH_COST;
9255                         break;
9256                 case CEE_BEQ_S:
9257                 case CEE_BGE_S:
9258                 case CEE_BGT_S:
9259                 case CEE_BLE_S:
9260                 case CEE_BLT_S:
9261                 case CEE_BNE_UN_S:
9262                 case CEE_BGE_UN_S:
9263                 case CEE_BGT_UN_S:
9264                 case CEE_BLE_UN_S:
9265                 case CEE_BLT_UN_S:
9266                         CHECK_OPSIZE (2);
9267                         CHECK_STACK (2);
9268                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9269                         ip++;
9270                         target = ip + 1 + *(signed char*)ip;
9271                         ip++;
9272
9273                         ADD_BINCOND (NULL);
9274
9275                         sp = stack_start;
9276                         inline_costs += BRANCH_COST;
9277                         break;
9278                 case CEE_BR:
9279                         CHECK_OPSIZE (5);
9280                         MONO_INST_NEW (cfg, ins, OP_BR);
9281                         ip++;
9282
9283                         target = ip + 4 + (gint32)read32(ip);
9284                         ip += 4;
9285                         GET_BBLOCK (cfg, tblock, target);
9286                         link_bblock (cfg, cfg->cbb, tblock);
9287                         ins->inst_target_bb = tblock;
9288                         if (sp != stack_start) {
9289                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9290                                 sp = stack_start;
9291                                 CHECK_UNVERIFIABLE (cfg);
9292                         }
9293
9294                         MONO_ADD_INS (cfg->cbb, ins);
9295
9296                         start_new_bblock = 1;
9297                         inline_costs += BRANCH_COST;
9298                         break;
9299                 case CEE_BRFALSE_S:
9300                 case CEE_BRTRUE_S:
9301                 case CEE_BRFALSE:
9302                 case CEE_BRTRUE: {
9303                         MonoInst *cmp;
9304                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9305                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9306                         guint32 opsize = is_short ? 1 : 4;
9307
9308                         CHECK_OPSIZE (opsize);
9309                         CHECK_STACK (1);
9310                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9311                                 UNVERIFIED;
9312                         ip ++;
9313                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9314                         ip += opsize;
9315
9316                         sp--;
9317
9318                         GET_BBLOCK (cfg, tblock, target);
9319                         link_bblock (cfg, cfg->cbb, tblock);
9320                         GET_BBLOCK (cfg, tblock, ip);
9321                         link_bblock (cfg, cfg->cbb, tblock);
9322
9323                         if (sp != stack_start) {
9324                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9325                                 CHECK_UNVERIFIABLE (cfg);
9326                         }
9327
9328                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9329                         cmp->sreg1 = sp [0]->dreg;
9330                         type_from_op (cfg, cmp, sp [0], NULL);
9331                         CHECK_TYPE (cmp);
9332
9333 #if SIZEOF_REGISTER == 4
9334                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9335                                 /* Convert it to OP_LCOMPARE */
9336                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9337                                 ins->type = STACK_I8;
9338                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9339                                 ins->inst_l = 0;
9340                                 MONO_ADD_INS (cfg->cbb, ins);
9341                                 cmp->opcode = OP_LCOMPARE;
9342                                 cmp->sreg2 = ins->dreg;
9343                         }
9344 #endif
9345                         MONO_ADD_INS (cfg->cbb, cmp);
9346
9347                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9348                         type_from_op (cfg, ins, sp [0], NULL);
9349                         MONO_ADD_INS (cfg->cbb, ins);
9350                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9351                         GET_BBLOCK (cfg, tblock, target);
9352                         ins->inst_true_bb = tblock;
9353                         GET_BBLOCK (cfg, tblock, ip);
9354                         ins->inst_false_bb = tblock;
9355                         start_new_bblock = 2;
9356
9357                         sp = stack_start;
9358                         inline_costs += BRANCH_COST;
9359                         break;
9360                 }
9361                 case CEE_BEQ:
9362                 case CEE_BGE:
9363                 case CEE_BGT:
9364                 case CEE_BLE:
9365                 case CEE_BLT:
9366                 case CEE_BNE_UN:
9367                 case CEE_BGE_UN:
9368                 case CEE_BGT_UN:
9369                 case CEE_BLE_UN:
9370                 case CEE_BLT_UN:
9371                         CHECK_OPSIZE (5);
9372                         CHECK_STACK (2);
9373                         MONO_INST_NEW (cfg, ins, *ip);
9374                         ip++;
9375                         target = ip + 4 + (gint32)read32(ip);
9376                         ip += 4;
9377
9378                         ADD_BINCOND (NULL);
9379
9380                         sp = stack_start;
9381                         inline_costs += BRANCH_COST;
9382                         break;
9383                 case CEE_SWITCH: {
9384                         MonoInst *src1;
9385                         MonoBasicBlock **targets;
9386                         MonoBasicBlock *default_bblock;
9387                         MonoJumpInfoBBTable *table;
9388                         int offset_reg = alloc_preg (cfg);
9389                         int target_reg = alloc_preg (cfg);
9390                         int table_reg = alloc_preg (cfg);
9391                         int sum_reg = alloc_preg (cfg);
9392                         gboolean use_op_switch;
9393
9394                         CHECK_OPSIZE (5);
9395                         CHECK_STACK (1);
9396                         n = read32 (ip + 1);
9397                         --sp;
9398                         src1 = sp [0];
9399                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9400                                 UNVERIFIED;
9401
9402                         ip += 5;
9403                         CHECK_OPSIZE (n * sizeof (guint32));
9404                         target = ip + n * sizeof (guint32);
9405
9406                         GET_BBLOCK (cfg, default_bblock, target);
9407                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9408
9409                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9410                         for (i = 0; i < n; ++i) {
9411                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9412                                 targets [i] = tblock;
9413                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9414                                 ip += 4;
9415                         }
9416
9417                         if (sp != stack_start) {
9418                                 /*
9419                                  * Link the current bb with the targets as well, so handle_stack_args
9420                                  * will set their in_stack correctly.
9421                                  */
9422                                 link_bblock (cfg, cfg->cbb, default_bblock);
9423                                 for (i = 0; i < n; ++i)
9424                                         link_bblock (cfg, cfg->cbb, targets [i]);
9425
9426                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9427                                 sp = stack_start;
9428                                 CHECK_UNVERIFIABLE (cfg);
9429
9430                                 /* Undo the links */
9431                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9432                                 for (i = 0; i < n; ++i)
9433                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9434                         }
9435
9436                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9437                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9438
9439                         for (i = 0; i < n; ++i)
9440                                 link_bblock (cfg, cfg->cbb, targets [i]);
9441
9442                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9443                         table->table = targets;
9444                         table->table_size = n;
9445
9446                         use_op_switch = FALSE;
9447 #ifdef TARGET_ARM
9448                         /* ARM implements SWITCH statements differently */
9449                         /* FIXME: Make it use the generic implementation */
9450                         if (!cfg->compile_aot)
9451                                 use_op_switch = TRUE;
9452 #endif
9453
9454                         if (COMPILE_LLVM (cfg))
9455                                 use_op_switch = TRUE;
9456
9457                         cfg->cbb->has_jump_table = 1;
9458
9459                         if (use_op_switch) {
9460                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9461                                 ins->sreg1 = src1->dreg;
9462                                 ins->inst_p0 = table;
9463                                 ins->inst_many_bb = targets;
9464                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9465                                 MONO_ADD_INS (cfg->cbb, ins);
9466                         } else {
9467                                 if (sizeof (gpointer) == 8)
9468                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9469                                 else
9470                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9471
9472 #if SIZEOF_REGISTER == 8
9473                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9474                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9475 #endif
9476
9477                                 if (cfg->compile_aot) {
9478                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9479                                 } else {
9480                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9481                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9482                                         ins->inst_p0 = table;
9483                                         ins->dreg = table_reg;
9484                                         MONO_ADD_INS (cfg->cbb, ins);
9485                                 }
9486
9487                                 /* FIXME: Use load_memindex */
9488                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9489                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9490                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9491                         }
9492                         start_new_bblock = 1;
9493                         inline_costs += (BRANCH_COST * 2);
9494                         break;
9495                 }
9496                 case CEE_LDIND_I1:
9497                 case CEE_LDIND_U1:
9498                 case CEE_LDIND_I2:
9499                 case CEE_LDIND_U2:
9500                 case CEE_LDIND_I4:
9501                 case CEE_LDIND_U4:
9502                 case CEE_LDIND_I8:
9503                 case CEE_LDIND_I:
9504                 case CEE_LDIND_R4:
9505                 case CEE_LDIND_R8:
9506                 case CEE_LDIND_REF:
9507                         CHECK_STACK (1);
9508                         --sp;
9509
9510                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9511                         *sp++ = ins;
9512                         ins_flag = 0;
9513                         ++ip;
9514                         break;
9515                 case CEE_STIND_REF:
9516                 case CEE_STIND_I1:
9517                 case CEE_STIND_I2:
9518                 case CEE_STIND_I4:
9519                 case CEE_STIND_I8:
9520                 case CEE_STIND_R4:
9521                 case CEE_STIND_R8:
9522                 case CEE_STIND_I:
9523                         CHECK_STACK (2);
9524                         sp -= 2;
9525
9526                         if (ins_flag & MONO_INST_VOLATILE) {
9527                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9528                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9529                         }
9530
9531                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9532                         ins->flags |= ins_flag;
9533                         ins_flag = 0;
9534
9535                         MONO_ADD_INS (cfg->cbb, ins);
9536
9537                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9538                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9539
9540                         inline_costs += 1;
9541                         ++ip;
9542                         break;
9543
9544                 case CEE_MUL:
9545                         CHECK_STACK (2);
9546
9547                         MONO_INST_NEW (cfg, ins, (*ip));
9548                         sp -= 2;
9549                         ins->sreg1 = sp [0]->dreg;
9550                         ins->sreg2 = sp [1]->dreg;
9551                         type_from_op (cfg, ins, sp [0], sp [1]);
9552                         CHECK_TYPE (ins);
9553                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9554
9555                         /* Use the immediate opcodes if possible */
9556                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9557                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9558                                 if (imm_opcode != -1) {
9559                                         ins->opcode = imm_opcode;
9560                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9561                                         ins->sreg2 = -1;
9562
9563                                         NULLIFY_INS (sp [1]);
9564                                 }
9565                         }
9566
9567                         MONO_ADD_INS ((cfg)->cbb, (ins));
9568
9569                         *sp++ = mono_decompose_opcode (cfg, ins);
9570                         ip++;
9571                         break;
9572                 case CEE_ADD:
9573                 case CEE_SUB:
9574                 case CEE_DIV:
9575                 case CEE_DIV_UN:
9576                 case CEE_REM:
9577                 case CEE_REM_UN:
9578                 case CEE_AND:
9579                 case CEE_OR:
9580                 case CEE_XOR:
9581                 case CEE_SHL:
9582                 case CEE_SHR:
9583                 case CEE_SHR_UN:
9584                         CHECK_STACK (2);
9585
9586                         MONO_INST_NEW (cfg, ins, (*ip));
9587                         sp -= 2;
9588                         ins->sreg1 = sp [0]->dreg;
9589                         ins->sreg2 = sp [1]->dreg;
9590                         type_from_op (cfg, ins, sp [0], sp [1]);
9591                         CHECK_TYPE (ins);
9592                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9593                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9594
9595                         /* FIXME: Pass opcode to is_inst_imm */
9596
9597                         /* Use the immediate opcodes if possible */
9598                         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)) {
9599                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9600                                 if (imm_opcode != -1) {
9601                                         ins->opcode = imm_opcode;
9602                                         if (sp [1]->opcode == OP_I8CONST) {
9603 #if SIZEOF_REGISTER == 8
9604                                                 ins->inst_imm = sp [1]->inst_l;
9605 #else
9606                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9607                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9608 #endif
9609                                         }
9610                                         else
9611                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9612                                         ins->sreg2 = -1;
9613
9614                                         /* Might be followed by an instruction added by add_widen_op */
9615                                         if (sp [1]->next == NULL)
9616                                                 NULLIFY_INS (sp [1]);
9617                                 }
9618                         }
9619                         MONO_ADD_INS ((cfg)->cbb, (ins));
9620
9621                         *sp++ = mono_decompose_opcode (cfg, ins);
9622                         ip++;
9623                         break;
9624                 case CEE_NEG:
9625                 case CEE_NOT:
9626                 case CEE_CONV_I1:
9627                 case CEE_CONV_I2:
9628                 case CEE_CONV_I4:
9629                 case CEE_CONV_R4:
9630                 case CEE_CONV_R8:
9631                 case CEE_CONV_U4:
9632                 case CEE_CONV_I8:
9633                 case CEE_CONV_U8:
9634                 case CEE_CONV_OVF_I8:
9635                 case CEE_CONV_OVF_U8:
9636                 case CEE_CONV_R_UN:
9637                         CHECK_STACK (1);
9638
9639                         /* Special case this earlier so we have long constants in the IR */
9640                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9641                                 int data = sp [-1]->inst_c0;
9642                                 sp [-1]->opcode = OP_I8CONST;
9643                                 sp [-1]->type = STACK_I8;
9644 #if SIZEOF_REGISTER == 8
9645                                 if ((*ip) == CEE_CONV_U8)
9646                                         sp [-1]->inst_c0 = (guint32)data;
9647                                 else
9648                                         sp [-1]->inst_c0 = data;
9649 #else
9650                                 sp [-1]->inst_ls_word = data;
9651                                 if ((*ip) == CEE_CONV_U8)
9652                                         sp [-1]->inst_ms_word = 0;
9653                                 else
9654                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9655 #endif
9656                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9657                         }
9658                         else {
9659                                 ADD_UNOP (*ip);
9660                         }
9661                         ip++;
9662                         break;
9663                 case CEE_CONV_OVF_I4:
9664                 case CEE_CONV_OVF_I1:
9665                 case CEE_CONV_OVF_I2:
9666                 case CEE_CONV_OVF_I:
9667                 case CEE_CONV_OVF_U:
9668                         CHECK_STACK (1);
9669
9670                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9671                                 ADD_UNOP (CEE_CONV_OVF_I8);
9672                                 ADD_UNOP (*ip);
9673                         } else {
9674                                 ADD_UNOP (*ip);
9675                         }
9676                         ip++;
9677                         break;
9678                 case CEE_CONV_OVF_U1:
9679                 case CEE_CONV_OVF_U2:
9680                 case CEE_CONV_OVF_U4:
9681                         CHECK_STACK (1);
9682
9683                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9684                                 ADD_UNOP (CEE_CONV_OVF_U8);
9685                                 ADD_UNOP (*ip);
9686                         } else {
9687                                 ADD_UNOP (*ip);
9688                         }
9689                         ip++;
9690                         break;
9691                 case CEE_CONV_OVF_I1_UN:
9692                 case CEE_CONV_OVF_I2_UN:
9693                 case CEE_CONV_OVF_I4_UN:
9694                 case CEE_CONV_OVF_I8_UN:
9695                 case CEE_CONV_OVF_U1_UN:
9696                 case CEE_CONV_OVF_U2_UN:
9697                 case CEE_CONV_OVF_U4_UN:
9698                 case CEE_CONV_OVF_U8_UN:
9699                 case CEE_CONV_OVF_I_UN:
9700                 case CEE_CONV_OVF_U_UN:
9701                 case CEE_CONV_U2:
9702                 case CEE_CONV_U1:
9703                 case CEE_CONV_I:
9704                 case CEE_CONV_U:
9705                         CHECK_STACK (1);
9706                         ADD_UNOP (*ip);
9707                         CHECK_CFG_EXCEPTION;
9708                         ip++;
9709                         break;
9710                 case CEE_ADD_OVF:
9711                 case CEE_ADD_OVF_UN:
9712                 case CEE_MUL_OVF:
9713                 case CEE_MUL_OVF_UN:
9714                 case CEE_SUB_OVF:
9715                 case CEE_SUB_OVF_UN:
9716                         CHECK_STACK (2);
9717                         ADD_BINOP (*ip);
9718                         ip++;
9719                         break;
9720                 case CEE_CPOBJ:
9721                         GSHAREDVT_FAILURE (*ip);
9722                         CHECK_OPSIZE (5);
9723                         CHECK_STACK (2);
9724                         token = read32 (ip + 1);
9725                         klass = mini_get_class (method, token, generic_context);
9726                         CHECK_TYPELOAD (klass);
9727                         sp -= 2;
9728                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9729                         ins_flag = 0;
9730                         ip += 5;
9731                         break;
9732                 case CEE_LDOBJ: {
9733                         int loc_index = -1;
9734                         int stloc_len = 0;
9735
9736                         CHECK_OPSIZE (5);
9737                         CHECK_STACK (1);
9738                         --sp;
9739                         token = read32 (ip + 1);
9740                         klass = mini_get_class (method, token, generic_context);
9741                         CHECK_TYPELOAD (klass);
9742
9743                         /* Optimize the common ldobj+stloc combination */
9744                         switch (ip [5]) {
9745                         case CEE_STLOC_S:
9746                                 loc_index = ip [6];
9747                                 stloc_len = 2;
9748                                 break;
9749                         case CEE_STLOC_0:
9750                         case CEE_STLOC_1:
9751                         case CEE_STLOC_2:
9752                         case CEE_STLOC_3:
9753                                 loc_index = ip [5] - CEE_STLOC_0;
9754                                 stloc_len = 1;
9755                                 break;
9756                         default:
9757                                 break;
9758                         }
9759
9760                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9761                                 CHECK_LOCAL (loc_index);
9762
9763                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9764                                 ins->dreg = cfg->locals [loc_index]->dreg;
9765                                 ins->flags |= ins_flag;
9766                                 ip += 5;
9767                                 ip += stloc_len;
9768                                 if (ins_flag & MONO_INST_VOLATILE) {
9769                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9770                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9771                                 }
9772                                 ins_flag = 0;
9773                                 break;
9774                         }
9775
9776                         /* Optimize the ldobj+stobj combination */
9777                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9778                                 CHECK_STACK (1);
9779
9780                                 sp --;
9781
9782                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9783
9784                                 ip += 5 + 5;
9785                                 ins_flag = 0;
9786                                 break;
9787                         }
9788
9789                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9790                         *sp++ = ins;
9791
9792                         ip += 5;
9793                         ins_flag = 0;
9794                         inline_costs += 1;
9795                         break;
9796                 }
9797                 case CEE_LDSTR:
9798                         CHECK_STACK_OVF (1);
9799                         CHECK_OPSIZE (5);
9800                         n = read32 (ip + 1);
9801
9802                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9803                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9804                                 ins->type = STACK_OBJ;
9805                                 *sp = ins;
9806                         }
9807                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9808                                 MonoInst *iargs [1];
9809                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9810
9811                                 if (cfg->compile_aot)
9812                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9813                                 else
9814                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9815                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9816                         } else {
9817                                 if (cfg->opt & MONO_OPT_SHARED) {
9818                                         MonoInst *iargs [3];
9819
9820                                         if (cfg->compile_aot) {
9821                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9822                                         }
9823                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9824                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9825                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9826                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9827                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9828                                         CHECK_CFG_ERROR;
9829                                 } else {
9830                                         if (cfg->cbb->out_of_line) {
9831                                                 MonoInst *iargs [2];
9832
9833                                                 if (image == mono_defaults.corlib) {
9834                                                         /*
9835                                                          * Avoid relocations in AOT and save some space by using a
9836                                                          * version of helper_ldstr specialized to mscorlib.
9837                                                          */
9838                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9839                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9840                                                 } else {
9841                                                         /* Avoid creating the string object */
9842                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9843                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9844                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9845                                                 }
9846                                         }
9847                                         else
9848                                         if (cfg->compile_aot) {
9849                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9850                                                 *sp = ins;
9851                                                 MONO_ADD_INS (cfg->cbb, ins);
9852                                         }
9853                                         else {
9854                                                 NEW_PCONST (cfg, ins, NULL);
9855                                                 ins->type = STACK_OBJ;
9856                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9857                                                 CHECK_CFG_ERROR;
9858
9859                                                 if (!ins->inst_p0)
9860                                                         OUT_OF_MEMORY_FAILURE;
9861
9862                                                 *sp = ins;
9863                                                 MONO_ADD_INS (cfg->cbb, ins);
9864                                         }
9865                                 }
9866                         }
9867
9868                         sp++;
9869                         ip += 5;
9870                         break;
9871                 case CEE_NEWOBJ: {
9872                         MonoInst *iargs [2];
9873                         MonoMethodSignature *fsig;
9874                         MonoInst this_ins;
9875                         MonoInst *alloc;
9876                         MonoInst *vtable_arg = NULL;
9877
9878                         CHECK_OPSIZE (5);
9879                         token = read32 (ip + 1);
9880                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9881                         CHECK_CFG_ERROR;
9882
9883                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9884                         CHECK_CFG_ERROR;
9885
9886                         mono_save_token_info (cfg, image, token, cmethod);
9887
9888                         if (!mono_class_init (cmethod->klass))
9889                                 TYPE_LOAD_ERROR (cmethod->klass);
9890
9891                         context_used = mini_method_check_context_used (cfg, cmethod);
9892
9893                         if (!dont_verify && !cfg->skip_visibility) {
9894                                 MonoMethod *cil_method = cmethod;
9895                                 MonoMethod *target_method = cil_method;
9896
9897                                 if (method->is_inflated) {
9898                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9899                                         CHECK_CFG_ERROR;
9900                                 }
9901
9902                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9903                                         !mono_method_can_access_method (method, cil_method))
9904                                         emit_method_access_failure (cfg, method, cil_method);
9905                         }
9906
9907                         if (mono_security_core_clr_enabled ())
9908                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9909
9910                         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)) {
9911                                 emit_class_init (cfg, cmethod->klass);
9912                                 CHECK_TYPELOAD (cmethod->klass);
9913                         }
9914
9915                         /*
9916                         if (cfg->gsharedvt) {
9917                                 if (mini_is_gsharedvt_variable_signature (sig))
9918                                         GSHAREDVT_FAILURE (*ip);
9919                         }
9920                         */
9921
9922                         n = fsig->param_count;
9923                         CHECK_STACK (n);
9924
9925                         /*
9926                          * Generate smaller code for the common newobj <exception> instruction in
9927                          * argument checking code.
9928                          */
9929                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9930                                 is_exception_class (cmethod->klass) && n <= 2 &&
9931                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9932                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9933                                 MonoInst *iargs [3];
9934
9935                                 sp -= n;
9936
9937                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9938                                 switch (n) {
9939                                 case 0:
9940                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9941                                         break;
9942                                 case 1:
9943                                         iargs [1] = sp [0];
9944                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9945                                         break;
9946                                 case 2:
9947                                         iargs [1] = sp [0];
9948                                         iargs [2] = sp [1];
9949                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9950                                         break;
9951                                 default:
9952                                         g_assert_not_reached ();
9953                                 }
9954
9955                                 ip += 5;
9956                                 inline_costs += 5;
9957                                 break;
9958                         }
9959
9960                         /* move the args to allow room for 'this' in the first position */
9961                         while (n--) {
9962                                 --sp;
9963                                 sp [1] = sp [0];
9964                         }
9965
9966                         /* check_call_signature () requires sp[0] to be set */
9967                         this_ins.type = STACK_OBJ;
9968                         sp [0] = &this_ins;
9969                         if (check_call_signature (cfg, fsig, sp))
9970                                 UNVERIFIED;
9971
9972                         iargs [0] = NULL;
9973
9974                         if (mini_class_is_system_array (cmethod->klass)) {
9975                                 *sp = emit_get_rgctx_method (cfg, context_used,
9976                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9977
9978                                 /* Avoid varargs in the common case */
9979                                 if (fsig->param_count == 1)
9980                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9981                                 else if (fsig->param_count == 2)
9982                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9983                                 else if (fsig->param_count == 3)
9984                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9985                                 else if (fsig->param_count == 4)
9986                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9987                                 else
9988                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9989                         } else if (cmethod->string_ctor) {
9990                                 g_assert (!context_used);
9991                                 g_assert (!vtable_arg);
9992                                 /* we simply pass a null pointer */
9993                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9994                                 /* now call the string ctor */
9995                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9996                         } else {
9997                                 if (cmethod->klass->valuetype) {
9998                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9999                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10000                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10001
10002                                         alloc = NULL;
10003
10004                                         /*
10005                                          * The code generated by mini_emit_virtual_call () expects
10006                                          * iargs [0] to be a boxed instance, but luckily the vcall
10007                                          * will be transformed into a normal call there.
10008                                          */
10009                                 } else if (context_used) {
10010                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10011                                         *sp = alloc;
10012                                 } else {
10013                                         MonoVTable *vtable = NULL;
10014
10015                                         if (!cfg->compile_aot)
10016                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10017                                         CHECK_TYPELOAD (cmethod->klass);
10018
10019                                         /*
10020                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10021                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10022                                          * As a workaround, we call class cctors before allocating objects.
10023                                          */
10024                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10025                                                 emit_class_init (cfg, cmethod->klass);
10026                                                 if (cfg->verbose_level > 2)
10027                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10028                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10029                                         }
10030
10031                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10032                                         *sp = alloc;
10033                                 }
10034                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10035
10036                                 if (alloc)
10037                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10038
10039                                 /* Now call the actual ctor */
10040                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10041                                 CHECK_CFG_EXCEPTION;
10042                         }
10043
10044                         if (alloc == NULL) {
10045                                 /* Valuetype */
10046                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10047                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10048                                 *sp++= ins;
10049                         } else {
10050                                 *sp++ = alloc;
10051                         }
10052
10053                         ip += 5;
10054                         inline_costs += 5;
10055                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10056                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10057                         break;
10058                 }
10059                 case CEE_CASTCLASS:
10060                 case CEE_ISINST: {
10061                         CHECK_STACK (1);
10062                         --sp;
10063                         CHECK_OPSIZE (5);
10064                         token = read32 (ip + 1);
10065                         klass = mini_get_class (method, token, generic_context);
10066                         CHECK_TYPELOAD (klass);
10067                         if (sp [0]->type != STACK_OBJ)
10068                                 UNVERIFIED;
10069
10070                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10071                         ins->dreg = alloc_preg (cfg);
10072                         ins->sreg1 = (*sp)->dreg;
10073                         ins->klass = klass;
10074                         ins->type = STACK_OBJ;
10075                         MONO_ADD_INS (cfg->cbb, ins);
10076
10077                         CHECK_CFG_EXCEPTION;
10078                         *sp++ = ins;
10079                         ip += 5;
10080
10081                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10082                         break;
10083                 }
10084                 case CEE_UNBOX_ANY: {
10085                         MonoInst *res, *addr;
10086
10087                         CHECK_STACK (1);
10088                         --sp;
10089                         CHECK_OPSIZE (5);
10090                         token = read32 (ip + 1);
10091                         klass = mini_get_class (method, token, generic_context);
10092                         CHECK_TYPELOAD (klass);
10093
10094                         mono_save_token_info (cfg, image, token, klass);
10095
10096                         context_used = mini_class_check_context_used (cfg, klass);
10097
10098                         if (mini_is_gsharedvt_klass (klass)) {
10099                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10100                                 inline_costs += 2;
10101                         } else if (generic_class_is_reference_type (cfg, klass)) {
10102                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10103                                         EMIT_NEW_PCONST (cfg, res, NULL);
10104                                         res->type = STACK_OBJ;
10105                                 } else {
10106                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10107                                         res->dreg = alloc_preg (cfg);
10108                                         res->sreg1 = (*sp)->dreg;
10109                                         res->klass = klass;
10110                                         res->type = STACK_OBJ;
10111                                         MONO_ADD_INS (cfg->cbb, res);
10112                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10113                                 }
10114                         } else if (mono_class_is_nullable (klass)) {
10115                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10116                         } else {
10117                                 addr = handle_unbox (cfg, klass, sp, context_used);
10118                                 /* LDOBJ */
10119                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10120                                 res = ins;
10121                                 inline_costs += 2;
10122                         }
10123
10124                         *sp ++ = res;
10125                         ip += 5;
10126                         break;
10127                 }
10128                 case CEE_BOX: {
10129                         MonoInst *val;
10130                         MonoClass *enum_class;
10131                         MonoMethod *has_flag;
10132
10133                         CHECK_STACK (1);
10134                         --sp;
10135                         val = *sp;
10136                         CHECK_OPSIZE (5);
10137                         token = read32 (ip + 1);
10138                         klass = mini_get_class (method, token, generic_context);
10139                         CHECK_TYPELOAD (klass);
10140
10141                         mono_save_token_info (cfg, image, token, klass);
10142
10143                         context_used = mini_class_check_context_used (cfg, klass);
10144
10145                         if (generic_class_is_reference_type (cfg, klass)) {
10146                                 *sp++ = val;
10147                                 ip += 5;
10148                                 break;
10149                         }
10150
10151                         if (klass == mono_defaults.void_class)
10152                                 UNVERIFIED;
10153                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10154                                 UNVERIFIED;
10155                         /* frequent check in generic code: box (struct), brtrue */
10156
10157                         /*
10158                          * Look for:
10159                          *
10160                          *   <push int/long ptr>
10161                          *   <push int/long>
10162                          *   box MyFlags
10163                          *   constrained. MyFlags
10164                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10165                          *
10166                          * If we find this sequence and the operand types on box and constrained
10167                          * are equal, we can emit a specialized instruction sequence instead of
10168                          * the very slow HasFlag () call.
10169                          */
10170                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10171                             /* Cheap checks first. */
10172                             ip + 5 + 6 + 5 < end &&
10173                             ip [5] == CEE_PREFIX1 &&
10174                             ip [6] == CEE_CONSTRAINED_ &&
10175                             ip [11] == CEE_CALLVIRT &&
10176                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10177                             mono_class_is_enum (klass) &&
10178                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10179                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10180                             has_flag->klass == mono_defaults.enum_class &&
10181                             !strcmp (has_flag->name, "HasFlag") &&
10182                             has_flag->signature->hasthis &&
10183                             has_flag->signature->param_count == 1) {
10184                                 CHECK_TYPELOAD (enum_class);
10185
10186                                 if (enum_class == klass) {
10187                                         MonoInst *enum_this, *enum_flag;
10188
10189                                         ip += 5 + 6 + 5;
10190                                         --sp;
10191
10192                                         enum_this = sp [0];
10193                                         enum_flag = sp [1];
10194
10195                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10196                                         break;
10197                                 }
10198                         }
10199
10200                         // FIXME: LLVM can't handle the inconsistent bb linking
10201                         if (!mono_class_is_nullable (klass) &&
10202                                 !mini_is_gsharedvt_klass (klass) &&
10203                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10204                                 (ip [5] == CEE_BRTRUE ||
10205                                  ip [5] == CEE_BRTRUE_S ||
10206                                  ip [5] == CEE_BRFALSE ||
10207                                  ip [5] == CEE_BRFALSE_S)) {
10208                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10209                                 int dreg;
10210                                 MonoBasicBlock *true_bb, *false_bb;
10211
10212                                 ip += 5;
10213
10214                                 if (cfg->verbose_level > 3) {
10215                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10216                                         printf ("<box+brtrue opt>\n");
10217                                 }
10218
10219                                 switch (*ip) {
10220                                 case CEE_BRTRUE_S:
10221                                 case CEE_BRFALSE_S:
10222                                         CHECK_OPSIZE (2);
10223                                         ip++;
10224                                         target = ip + 1 + (signed char)(*ip);
10225                                         ip++;
10226                                         break;
10227                                 case CEE_BRTRUE:
10228                                 case CEE_BRFALSE:
10229                                         CHECK_OPSIZE (5);
10230                                         ip++;
10231                                         target = ip + 4 + (gint)(read32 (ip));
10232                                         ip += 4;
10233                                         break;
10234                                 default:
10235                                         g_assert_not_reached ();
10236                                 }
10237
10238                                 /*
10239                                  * We need to link both bblocks, since it is needed for handling stack
10240                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10241                                  * Branching to only one of them would lead to inconsistencies, so
10242                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10243                                  */
10244                                 GET_BBLOCK (cfg, true_bb, target);
10245                                 GET_BBLOCK (cfg, false_bb, ip);
10246
10247                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10248                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10249
10250                                 if (sp != stack_start) {
10251                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10252                                         sp = stack_start;
10253                                         CHECK_UNVERIFIABLE (cfg);
10254                                 }
10255
10256                                 if (COMPILE_LLVM (cfg)) {
10257                                         dreg = alloc_ireg (cfg);
10258                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10259                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10260
10261                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10262                                 } else {
10263                                         /* The JIT can't eliminate the iconst+compare */
10264                                         MONO_INST_NEW (cfg, ins, OP_BR);
10265                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10266                                         MONO_ADD_INS (cfg->cbb, ins);
10267                                 }
10268
10269                                 start_new_bblock = 1;
10270                                 break;
10271                         }
10272
10273                         *sp++ = handle_box (cfg, val, klass, context_used);
10274
10275                         CHECK_CFG_EXCEPTION;
10276                         ip += 5;
10277                         inline_costs += 1;
10278                         break;
10279                 }
10280                 case CEE_UNBOX: {
10281                         CHECK_STACK (1);
10282                         --sp;
10283                         CHECK_OPSIZE (5);
10284                         token = read32 (ip + 1);
10285                         klass = mini_get_class (method, token, generic_context);
10286                         CHECK_TYPELOAD (klass);
10287
10288                         mono_save_token_info (cfg, image, token, klass);
10289
10290                         context_used = mini_class_check_context_used (cfg, klass);
10291
10292                         if (mono_class_is_nullable (klass)) {
10293                                 MonoInst *val;
10294
10295                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10296                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10297
10298                                 *sp++= ins;
10299                         } else {
10300                                 ins = handle_unbox (cfg, klass, sp, context_used);
10301                                 *sp++ = ins;
10302                         }
10303                         ip += 5;
10304                         inline_costs += 2;
10305                         break;
10306                 }
10307                 case CEE_LDFLD:
10308                 case CEE_LDFLDA:
10309                 case CEE_STFLD:
10310                 case CEE_LDSFLD:
10311                 case CEE_LDSFLDA:
10312                 case CEE_STSFLD: {
10313                         MonoClassField *field;
10314 #ifndef DISABLE_REMOTING
10315                         int costs;
10316 #endif
10317                         guint foffset;
10318                         gboolean is_instance;
10319                         int op;
10320                         gpointer addr = NULL;
10321                         gboolean is_special_static;
10322                         MonoType *ftype;
10323                         MonoInst *store_val = NULL;
10324                         MonoInst *thread_ins;
10325
10326                         op = *ip;
10327                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10328                         if (is_instance) {
10329                                 if (op == CEE_STFLD) {
10330                                         CHECK_STACK (2);
10331                                         sp -= 2;
10332                                         store_val = sp [1];
10333                                 } else {
10334                                         CHECK_STACK (1);
10335                                         --sp;
10336                                 }
10337                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10338                                         UNVERIFIED;
10339                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10340                                         UNVERIFIED;
10341                         } else {
10342                                 if (op == CEE_STSFLD) {
10343                                         CHECK_STACK (1);
10344                                         sp--;
10345                                         store_val = sp [0];
10346                                 }
10347                         }
10348
10349                         CHECK_OPSIZE (5);
10350                         token = read32 (ip + 1);
10351                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10352                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10353                                 klass = field->parent;
10354                         }
10355                         else {
10356                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10357                                 CHECK_CFG_ERROR;
10358                         }
10359                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10360                                 FIELD_ACCESS_FAILURE (method, field);
10361                         mono_class_init (klass);
10362
10363                         /* if the class is Critical then transparent code cannot access it's fields */
10364                         if (!is_instance && mono_security_core_clr_enabled ())
10365                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10366
10367                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10368                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10369                         if (mono_security_core_clr_enabled ())
10370                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10371                         */
10372
10373                         ftype = mono_field_get_type (field);
10374
10375                         /*
10376                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10377                          * the static case.
10378                          */
10379                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10380                                 switch (op) {
10381                                 case CEE_LDFLD:
10382                                         op = CEE_LDSFLD;
10383                                         break;
10384                                 case CEE_STFLD:
10385                                         op = CEE_STSFLD;
10386                                         break;
10387                                 case CEE_LDFLDA:
10388                                         op = CEE_LDSFLDA;
10389                                         break;
10390                                 default:
10391                                         g_assert_not_reached ();
10392                                 }
10393                                 is_instance = FALSE;
10394                         }
10395
10396                         context_used = mini_class_check_context_used (cfg, klass);
10397
10398                         /* INSTANCE CASE */
10399
10400                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10401                         if (op == CEE_STFLD) {
10402                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10403                                         UNVERIFIED;
10404 #ifndef DISABLE_REMOTING
10405                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10406                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10407                                         MonoInst *iargs [5];
10408
10409                                         GSHAREDVT_FAILURE (op);
10410
10411                                         iargs [0] = sp [0];
10412                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10413                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10414                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10415                                                     field->offset);
10416                                         iargs [4] = sp [1];
10417
10418                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10419                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10420                                                                                            iargs, ip, cfg->real_offset, TRUE);
10421                                                 CHECK_CFG_EXCEPTION;
10422                                                 g_assert (costs > 0);
10423
10424                                                 cfg->real_offset += 5;
10425
10426                                                 inline_costs += costs;
10427                                         } else {
10428                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10429                                         }
10430                                 } else
10431 #endif
10432                                 {
10433                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10434
10435                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10436
10437                                         if (ins_flag & MONO_INST_VOLATILE) {
10438                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10439                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10440                                         }
10441
10442                                         if (mini_is_gsharedvt_klass (klass)) {
10443                                                 MonoInst *offset_ins;
10444
10445                                                 context_used = mini_class_check_context_used (cfg, klass);
10446
10447                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10448                                                 /* The value is offset by 1 */
10449                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10450                                                 dreg = alloc_ireg_mp (cfg);
10451                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10452                                                 wbarrier_ptr_ins = ins;
10453                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10454                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10455                                         } else {
10456                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10457                                         }
10458                                         if (sp [0]->opcode != OP_LDADDR)
10459                                                 store->flags |= MONO_INST_FAULT;
10460
10461                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10462                                                 if (mini_is_gsharedvt_klass (klass)) {
10463                                                         g_assert (wbarrier_ptr_ins);
10464                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10465                                                 } else {
10466                                                         /* insert call to write barrier */
10467                                                         MonoInst *ptr;
10468                                                         int dreg;
10469
10470                                                         dreg = alloc_ireg_mp (cfg);
10471                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10472                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10473                                                 }
10474                                         }
10475
10476                                         store->flags |= ins_flag;
10477                                 }
10478                                 ins_flag = 0;
10479                                 ip += 5;
10480                                 break;
10481                         }
10482
10483 #ifndef DISABLE_REMOTING
10484                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10485                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10486                                 MonoInst *iargs [4];
10487
10488                                 GSHAREDVT_FAILURE (op);
10489
10490                                 iargs [0] = sp [0];
10491                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10492                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10493                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10494                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10495                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10496                                                                                    iargs, ip, cfg->real_offset, TRUE);
10497                                         CHECK_CFG_EXCEPTION;
10498                                         g_assert (costs > 0);
10499
10500                                         cfg->real_offset += 5;
10501
10502                                         *sp++ = iargs [0];
10503
10504                                         inline_costs += costs;
10505                                 } else {
10506                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10507                                         *sp++ = ins;
10508                                 }
10509                         } else
10510 #endif
10511                         if (is_instance) {
10512                                 if (sp [0]->type == STACK_VTYPE) {
10513                                         MonoInst *var;
10514
10515                                         /* Have to compute the address of the variable */
10516
10517                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10518                                         if (!var)
10519                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10520                                         else
10521                                                 g_assert (var->klass == klass);
10522
10523                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10524                                         sp [0] = ins;
10525                                 }
10526
10527                                 if (op == CEE_LDFLDA) {
10528                                         if (sp [0]->type == STACK_OBJ) {
10529                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10530                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10531                                         }
10532
10533                                         dreg = alloc_ireg_mp (cfg);
10534
10535                                         if (mini_is_gsharedvt_klass (klass)) {
10536                                                 MonoInst *offset_ins;
10537
10538                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10539                                                 /* The value is offset by 1 */
10540                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10541                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10542                                         } else {
10543                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10544                                         }
10545                                         ins->klass = mono_class_from_mono_type (field->type);
10546                                         ins->type = STACK_MP;
10547                                         *sp++ = ins;
10548                                 } else {
10549                                         MonoInst *load;
10550
10551                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10552
10553                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10554                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10555                                                 if (ins) {
10556                                                         *sp++ = ins;
10557                                                         ins_flag = 0;
10558                                                         ip += 5;
10559                                                         break;
10560                                                 }
10561                                         }
10562
10563                                         MonoInst *field_add_inst = sp [0];
10564                                         if (mini_is_gsharedvt_klass (klass)) {
10565                                                 MonoInst *offset_ins;
10566
10567                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10568                                                 /* The value is offset by 1 */
10569                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10570                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10571                                                 foffset = 0;
10572                                         }
10573
10574                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10575
10576                                         if (sp [0]->opcode != OP_LDADDR)
10577                                                 load->flags |= MONO_INST_FAULT;
10578                                         *sp++ = load;
10579                                 }
10580                         }
10581
10582                         if (is_instance) {
10583                                 ins_flag = 0;
10584                                 ip += 5;
10585                                 break;
10586                         }
10587
10588                         /* STATIC CASE */
10589                         context_used = mini_class_check_context_used (cfg, klass);
10590
10591                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10592                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10593                                 CHECK_CFG_ERROR;
10594                         }
10595
10596                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10597                          * to be called here.
10598                          */
10599                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10600                                 mono_class_vtable (cfg->domain, klass);
10601                                 CHECK_TYPELOAD (klass);
10602                         }
10603                         mono_domain_lock (cfg->domain);
10604                         if (cfg->domain->special_static_fields)
10605                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10606                         mono_domain_unlock (cfg->domain);
10607
10608                         is_special_static = mono_class_field_is_special_static (field);
10609
10610                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10611                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10612                         else
10613                                 thread_ins = NULL;
10614
10615                         /* Generate IR to compute the field address */
10616                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10617                                 /*
10618                                  * Fast access to TLS data
10619                                  * Inline version of get_thread_static_data () in
10620                                  * threads.c.
10621                                  */
10622                                 guint32 offset;
10623                                 int idx, static_data_reg, array_reg, dreg;
10624
10625                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10626                                         GSHAREDVT_FAILURE (op);
10627
10628                                 static_data_reg = alloc_ireg (cfg);
10629                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10630
10631                                 if (cfg->compile_aot) {
10632                                         int offset_reg, offset2_reg, idx_reg;
10633
10634                                         /* For TLS variables, this will return the TLS offset */
10635                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10636                                         offset_reg = ins->dreg;
10637                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10638                                         idx_reg = alloc_ireg (cfg);
10639                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10640                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10641                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10642                                         array_reg = alloc_ireg (cfg);
10643                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10644                                         offset2_reg = alloc_ireg (cfg);
10645                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10646                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10647                                         dreg = alloc_ireg (cfg);
10648                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10649                                 } else {
10650                                         offset = (gsize)addr & 0x7fffffff;
10651                                         idx = offset & 0x3f;
10652
10653                                         array_reg = alloc_ireg (cfg);
10654                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10655                                         dreg = alloc_ireg (cfg);
10656                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10657                                 }
10658                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10659                                         (cfg->compile_aot && is_special_static) ||
10660                                         (context_used && is_special_static)) {
10661                                 MonoInst *iargs [2];
10662
10663                                 g_assert (field->parent);
10664                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10665                                 if (context_used) {
10666                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10667                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10668                                 } else {
10669                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10670                                 }
10671                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10672                         } else if (context_used) {
10673                                 MonoInst *static_data;
10674
10675                                 /*
10676                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10677                                         method->klass->name_space, method->klass->name, method->name,
10678                                         depth, field->offset);
10679                                 */
10680
10681                                 if (mono_class_needs_cctor_run (klass, method))
10682                                         emit_class_init (cfg, klass);
10683
10684                                 /*
10685                                  * The pointer we're computing here is
10686                                  *
10687                                  *   super_info.static_data + field->offset
10688                                  */
10689                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10690                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10691
10692                                 if (mini_is_gsharedvt_klass (klass)) {
10693                                         MonoInst *offset_ins;
10694
10695                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10696                                         /* The value is offset by 1 */
10697                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10698                                         dreg = alloc_ireg_mp (cfg);
10699                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10700                                 } else if (field->offset == 0) {
10701                                         ins = static_data;
10702                                 } else {
10703                                         int addr_reg = mono_alloc_preg (cfg);
10704                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10705                                 }
10706                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10707                                 MonoInst *iargs [2];
10708
10709                                 g_assert (field->parent);
10710                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10711                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10712                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10713                         } else {
10714                                 MonoVTable *vtable = NULL;
10715
10716                                 if (!cfg->compile_aot)
10717                                         vtable = mono_class_vtable (cfg->domain, klass);
10718                                 CHECK_TYPELOAD (klass);
10719
10720                                 if (!addr) {
10721                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10722                                                 if (!(g_slist_find (class_inits, klass))) {
10723                                                         emit_class_init (cfg, klass);
10724                                                         if (cfg->verbose_level > 2)
10725                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10726                                                         class_inits = g_slist_prepend (class_inits, klass);
10727                                                 }
10728                                         } else {
10729                                                 if (cfg->run_cctors) {
10730                                                         /* This makes so that inline cannot trigger */
10731                                                         /* .cctors: too many apps depend on them */
10732                                                         /* running with a specific order... */
10733                                                         g_assert (vtable);
10734                                                         if (! vtable->initialized)
10735                                                                 INLINE_FAILURE ("class init");
10736                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10737                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10738                                                                 goto exception_exit;
10739                                                         }
10740                                                 }
10741                                         }
10742                                         if (cfg->compile_aot)
10743                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10744                                         else {
10745                                                 g_assert (vtable);
10746                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10747                                                 g_assert (addr);
10748                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10749                                         }
10750                                 } else {
10751                                         MonoInst *iargs [1];
10752                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10753                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10754                                 }
10755                         }
10756
10757                         /* Generate IR to do the actual load/store operation */
10758
10759                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10760                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10761                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10762                         }
10763
10764                         if (op == CEE_LDSFLDA) {
10765                                 ins->klass = mono_class_from_mono_type (ftype);
10766                                 ins->type = STACK_PTR;
10767                                 *sp++ = ins;
10768                         } else if (op == CEE_STSFLD) {
10769                                 MonoInst *store;
10770
10771                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10772                                 store->flags |= ins_flag;
10773                         } else {
10774                                 gboolean is_const = FALSE;
10775                                 MonoVTable *vtable = NULL;
10776                                 gpointer addr = NULL;
10777
10778                                 if (!context_used) {
10779                                         vtable = mono_class_vtable (cfg->domain, klass);
10780                                         CHECK_TYPELOAD (klass);
10781                                 }
10782                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10783                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10784                                         int ro_type = ftype->type;
10785                                         if (!addr)
10786                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10787                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10788                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10789                                         }
10790
10791                                         GSHAREDVT_FAILURE (op);
10792
10793                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10794                                         is_const = TRUE;
10795                                         switch (ro_type) {
10796                                         case MONO_TYPE_BOOLEAN:
10797                                         case MONO_TYPE_U1:
10798                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10799                                                 sp++;
10800                                                 break;
10801                                         case MONO_TYPE_I1:
10802                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10803                                                 sp++;
10804                                                 break;
10805                                         case MONO_TYPE_CHAR:
10806                                         case MONO_TYPE_U2:
10807                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10808                                                 sp++;
10809                                                 break;
10810                                         case MONO_TYPE_I2:
10811                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10812                                                 sp++;
10813                                                 break;
10814                                                 break;
10815                                         case MONO_TYPE_I4:
10816                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10817                                                 sp++;
10818                                                 break;
10819                                         case MONO_TYPE_U4:
10820                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10821                                                 sp++;
10822                                                 break;
10823                                         case MONO_TYPE_I:
10824                                         case MONO_TYPE_U:
10825                                         case MONO_TYPE_PTR:
10826                                         case MONO_TYPE_FNPTR:
10827                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10828                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10829                                                 sp++;
10830                                                 break;
10831                                         case MONO_TYPE_STRING:
10832                                         case MONO_TYPE_OBJECT:
10833                                         case MONO_TYPE_CLASS:
10834                                         case MONO_TYPE_SZARRAY:
10835                                         case MONO_TYPE_ARRAY:
10836                                                 if (!mono_gc_is_moving ()) {
10837                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10838                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10839                                                         sp++;
10840                                                 } else {
10841                                                         is_const = FALSE;
10842                                                 }
10843                                                 break;
10844                                         case MONO_TYPE_I8:
10845                                         case MONO_TYPE_U8:
10846                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10847                                                 sp++;
10848                                                 break;
10849                                         case MONO_TYPE_R4:
10850                                         case MONO_TYPE_R8:
10851                                         case MONO_TYPE_VALUETYPE:
10852                                         default:
10853                                                 is_const = FALSE;
10854                                                 break;
10855                                         }
10856                                 }
10857
10858                                 if (!is_const) {
10859                                         MonoInst *load;
10860
10861                                         CHECK_STACK_OVF (1);
10862
10863                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10864                                         load->flags |= ins_flag;
10865                                         ins_flag = 0;
10866                                         *sp++ = load;
10867                                 }
10868                         }
10869
10870                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10871                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10872                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10873                         }
10874
10875                         ins_flag = 0;
10876                         ip += 5;
10877                         break;
10878                 }
10879                 case CEE_STOBJ:
10880                         CHECK_STACK (2);
10881                         sp -= 2;
10882                         CHECK_OPSIZE (5);
10883                         token = read32 (ip + 1);
10884                         klass = mini_get_class (method, token, generic_context);
10885                         CHECK_TYPELOAD (klass);
10886
10887                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10888                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10889                         ins_flag = 0;
10890                         ip += 5;
10891                         inline_costs += 1;
10892                         break;
10893
10894                         /*
10895                          * Array opcodes
10896                          */
10897                 case CEE_NEWARR: {
10898                         MonoInst *len_ins;
10899                         const char *data_ptr;
10900                         int data_size = 0;
10901                         guint32 field_token;
10902
10903                         CHECK_STACK (1);
10904                         --sp;
10905
10906                         CHECK_OPSIZE (5);
10907                         token = read32 (ip + 1);
10908
10909                         klass = mini_get_class (method, token, generic_context);
10910                         CHECK_TYPELOAD (klass);
10911                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10912                                 UNVERIFIED;
10913
10914                         context_used = mini_class_check_context_used (cfg, klass);
10915
10916                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10917                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10918                                 ins->sreg1 = sp [0]->dreg;
10919                                 ins->type = STACK_I4;
10920                                 ins->dreg = alloc_ireg (cfg);
10921                                 MONO_ADD_INS (cfg->cbb, ins);
10922                                 *sp = mono_decompose_opcode (cfg, ins);
10923                         }
10924
10925                         if (context_used) {
10926                                 MonoInst *args [3];
10927                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10928                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10929
10930                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10931
10932                                 /* vtable */
10933                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10934                                         array_class, MONO_RGCTX_INFO_VTABLE);
10935                                 /* array len */
10936                                 args [1] = sp [0];
10937
10938                                 if (managed_alloc)
10939                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10940                                 else
10941                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10942                         } else {
10943                                 if (cfg->opt & MONO_OPT_SHARED) {
10944                                         /* Decompose now to avoid problems with references to the domainvar */
10945                                         MonoInst *iargs [3];
10946
10947                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10948                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10949                                         iargs [2] = sp [0];
10950
10951                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10952                                 } else {
10953                                         /* Decompose later since it is needed by abcrem */
10954                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10955                                         mono_class_vtable (cfg->domain, array_type);
10956                                         CHECK_TYPELOAD (array_type);
10957
10958                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10959                                         ins->dreg = alloc_ireg_ref (cfg);
10960                                         ins->sreg1 = sp [0]->dreg;
10961                                         ins->inst_newa_class = klass;
10962                                         ins->type = STACK_OBJ;
10963                                         ins->klass = array_type;
10964                                         MONO_ADD_INS (cfg->cbb, ins);
10965                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10966                                         cfg->cbb->has_array_access = TRUE;
10967
10968                                         /* Needed so mono_emit_load_get_addr () gets called */
10969                                         mono_get_got_var (cfg);
10970                                 }
10971                         }
10972
10973                         len_ins = sp [0];
10974                         ip += 5;
10975                         *sp++ = ins;
10976                         inline_costs += 1;
10977
10978                         /*
10979                          * we inline/optimize the initialization sequence if possible.
10980                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10981                          * for small sizes open code the memcpy
10982                          * ensure the rva field is big enough
10983                          */
10984                         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))) {
10985                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10986                                 MonoInst *iargs [3];
10987                                 int add_reg = alloc_ireg_mp (cfg);
10988
10989                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10990                                 if (cfg->compile_aot) {
10991                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10992                                 } else {
10993                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10994                                 }
10995                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10996                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10997                                 ip += 11;
10998                         }
10999
11000                         break;
11001                 }
11002                 case CEE_LDLEN:
11003                         CHECK_STACK (1);
11004                         --sp;
11005                         if (sp [0]->type != STACK_OBJ)
11006                                 UNVERIFIED;
11007
11008                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11009                         ins->dreg = alloc_preg (cfg);
11010                         ins->sreg1 = sp [0]->dreg;
11011                         ins->type = STACK_I4;
11012                         /* This flag will be inherited by the decomposition */
11013                         ins->flags |= MONO_INST_FAULT;
11014                         MONO_ADD_INS (cfg->cbb, ins);
11015                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11016                         cfg->cbb->has_array_access = TRUE;
11017                         ip ++;
11018                         *sp++ = ins;
11019                         break;
11020                 case CEE_LDELEMA:
11021                         CHECK_STACK (2);
11022                         sp -= 2;
11023                         CHECK_OPSIZE (5);
11024                         if (sp [0]->type != STACK_OBJ)
11025                                 UNVERIFIED;
11026
11027                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11028
11029                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11030                         CHECK_TYPELOAD (klass);
11031                         /* we need to make sure that this array is exactly the type it needs
11032                          * to be for correctness. the wrappers are lax with their usage
11033                          * so we need to ignore them here
11034                          */
11035                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11036                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11037                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11038                                 CHECK_TYPELOAD (array_class);
11039                         }
11040
11041                         readonly = FALSE;
11042                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11043                         *sp++ = ins;
11044                         ip += 5;
11045                         break;
11046                 case CEE_LDELEM:
11047                 case CEE_LDELEM_I1:
11048                 case CEE_LDELEM_U1:
11049                 case CEE_LDELEM_I2:
11050                 case CEE_LDELEM_U2:
11051                 case CEE_LDELEM_I4:
11052                 case CEE_LDELEM_U4:
11053                 case CEE_LDELEM_I8:
11054                 case CEE_LDELEM_I:
11055                 case CEE_LDELEM_R4:
11056                 case CEE_LDELEM_R8:
11057                 case CEE_LDELEM_REF: {
11058                         MonoInst *addr;
11059
11060                         CHECK_STACK (2);
11061                         sp -= 2;
11062
11063                         if (*ip == CEE_LDELEM) {
11064                                 CHECK_OPSIZE (5);
11065                                 token = read32 (ip + 1);
11066                                 klass = mini_get_class (method, token, generic_context);
11067                                 CHECK_TYPELOAD (klass);
11068                                 mono_class_init (klass);
11069                         }
11070                         else
11071                                 klass = array_access_to_klass (*ip);
11072
11073                         if (sp [0]->type != STACK_OBJ)
11074                                 UNVERIFIED;
11075
11076                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11077
11078                         if (mini_is_gsharedvt_variable_klass (klass)) {
11079                                 // FIXME-VT: OP_ICONST optimization
11080                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11081                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11082                                 ins->opcode = OP_LOADV_MEMBASE;
11083                         } else if (sp [1]->opcode == OP_ICONST) {
11084                                 int array_reg = sp [0]->dreg;
11085                                 int index_reg = sp [1]->dreg;
11086                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11087
11088                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11089                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11090
11091                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11092                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11093                         } else {
11094                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11095                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11096                         }
11097                         *sp++ = ins;
11098                         if (*ip == CEE_LDELEM)
11099                                 ip += 5;
11100                         else
11101                                 ++ip;
11102                         break;
11103                 }
11104                 case CEE_STELEM_I:
11105                 case CEE_STELEM_I1:
11106                 case CEE_STELEM_I2:
11107                 case CEE_STELEM_I4:
11108                 case CEE_STELEM_I8:
11109                 case CEE_STELEM_R4:
11110                 case CEE_STELEM_R8:
11111                 case CEE_STELEM_REF:
11112                 case CEE_STELEM: {
11113                         CHECK_STACK (3);
11114                         sp -= 3;
11115
11116                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11117
11118                         if (*ip == CEE_STELEM) {
11119                                 CHECK_OPSIZE (5);
11120                                 token = read32 (ip + 1);
11121                                 klass = mini_get_class (method, token, generic_context);
11122                                 CHECK_TYPELOAD (klass);
11123                                 mono_class_init (klass);
11124                         }
11125                         else
11126                                 klass = array_access_to_klass (*ip);
11127
11128                         if (sp [0]->type != STACK_OBJ)
11129                                 UNVERIFIED;
11130
11131                         emit_array_store (cfg, klass, sp, TRUE);
11132
11133                         if (*ip == CEE_STELEM)
11134                                 ip += 5;
11135                         else
11136                                 ++ip;
11137                         inline_costs += 1;
11138                         break;
11139                 }
11140                 case CEE_CKFINITE: {
11141                         CHECK_STACK (1);
11142                         --sp;
11143
11144                         if (cfg->llvm_only) {
11145                                 MonoInst *iargs [1];
11146
11147                                 iargs [0] = sp [0];
11148                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11149                         } else  {
11150                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11151                                 ins->sreg1 = sp [0]->dreg;
11152                                 ins->dreg = alloc_freg (cfg);
11153                                 ins->type = STACK_R8;
11154                                 MONO_ADD_INS (cfg->cbb, ins);
11155
11156                                 *sp++ = mono_decompose_opcode (cfg, ins);
11157                         }
11158
11159                         ++ip;
11160                         break;
11161                 }
11162                 case CEE_REFANYVAL: {
11163                         MonoInst *src_var, *src;
11164
11165                         int klass_reg = alloc_preg (cfg);
11166                         int dreg = alloc_preg (cfg);
11167
11168                         GSHAREDVT_FAILURE (*ip);
11169
11170                         CHECK_STACK (1);
11171                         MONO_INST_NEW (cfg, ins, *ip);
11172                         --sp;
11173                         CHECK_OPSIZE (5);
11174                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11175                         CHECK_TYPELOAD (klass);
11176
11177                         context_used = mini_class_check_context_used (cfg, klass);
11178
11179                         // FIXME:
11180                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11181                         if (!src_var)
11182                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11183                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11184                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11185
11186                         if (context_used) {
11187                                 MonoInst *klass_ins;
11188
11189                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11190                                                 klass, MONO_RGCTX_INFO_KLASS);
11191
11192                                 // FIXME:
11193                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11194                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11195                         } else {
11196                                 mini_emit_class_check (cfg, klass_reg, klass);
11197                         }
11198                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11199                         ins->type = STACK_MP;
11200                         ins->klass = klass;
11201                         *sp++ = ins;
11202                         ip += 5;
11203                         break;
11204                 }
11205                 case CEE_MKREFANY: {
11206                         MonoInst *loc, *addr;
11207
11208                         GSHAREDVT_FAILURE (*ip);
11209
11210                         CHECK_STACK (1);
11211                         MONO_INST_NEW (cfg, ins, *ip);
11212                         --sp;
11213                         CHECK_OPSIZE (5);
11214                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11215                         CHECK_TYPELOAD (klass);
11216
11217                         context_used = mini_class_check_context_used (cfg, klass);
11218
11219                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11220                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11221
11222                         if (context_used) {
11223                                 MonoInst *const_ins;
11224                                 int type_reg = alloc_preg (cfg);
11225
11226                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11227                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11228                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11229                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11230                         } else {
11231                                 int const_reg = alloc_preg (cfg);
11232                                 int type_reg = alloc_preg (cfg);
11233
11234                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11235                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11236                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11237                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11238                         }
11239                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11240
11241                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11242                         ins->type = STACK_VTYPE;
11243                         ins->klass = mono_defaults.typed_reference_class;
11244                         *sp++ = ins;
11245                         ip += 5;
11246                         break;
11247                 }
11248                 case CEE_LDTOKEN: {
11249                         gpointer handle;
11250                         MonoClass *handle_class;
11251
11252                         CHECK_STACK_OVF (1);
11253
11254                         CHECK_OPSIZE (5);
11255                         n = read32 (ip + 1);
11256
11257                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11258                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11259                                 handle = mono_method_get_wrapper_data (method, n);
11260                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11261                                 if (handle_class == mono_defaults.typehandle_class)
11262                                         handle = &((MonoClass*)handle)->byval_arg;
11263                         }
11264                         else {
11265                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11266                                 CHECK_CFG_ERROR;
11267                         }
11268                         if (!handle)
11269                                 LOAD_ERROR;
11270                         mono_class_init (handle_class);
11271                         if (cfg->gshared) {
11272                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11273                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11274                                         /* This case handles ldtoken
11275                                            of an open type, like for
11276                                            typeof(Gen<>). */
11277                                         context_used = 0;
11278                                 } else if (handle_class == mono_defaults.typehandle_class) {
11279                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11280                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11281                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11282                                 else if (handle_class == mono_defaults.methodhandle_class)
11283                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11284                                 else
11285                                         g_assert_not_reached ();
11286                         }
11287
11288                         if ((cfg->opt & MONO_OPT_SHARED) &&
11289                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11290                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11291                                 MonoInst *addr, *vtvar, *iargs [3];
11292                                 int method_context_used;
11293
11294                                 method_context_used = mini_method_check_context_used (cfg, method);
11295
11296                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11297
11298                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11299                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11300                                 if (method_context_used) {
11301                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11302                                                 method, MONO_RGCTX_INFO_METHOD);
11303                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11304                                 } else {
11305                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11306                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11307                                 }
11308                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11309
11310                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11311
11312                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11313                         } else {
11314                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11315                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11316                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11317                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11318                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11319                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11320
11321                                         mono_class_init (tclass);
11322                                         if (context_used) {
11323                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11324                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11325                                         } else if (cfg->compile_aot) {
11326                                                 if (method->wrapper_type) {
11327                                                         error_init (&error); //got to do it since there are multiple conditionals below
11328                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11329                                                                 /* Special case for static synchronized wrappers */
11330                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11331                                                         } else {
11332                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11333                                                                 /* FIXME: n is not a normal token */
11334                                                                 DISABLE_AOT (cfg);
11335                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11336                                                         }
11337                                                 } else {
11338                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11339                                                 }
11340                                         } else {
11341                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11342                                                 CHECK_CFG_ERROR;
11343                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11344                                         }
11345                                         ins->type = STACK_OBJ;
11346                                         ins->klass = cmethod->klass;
11347                                         ip += 5;
11348                                 } else {
11349                                         MonoInst *addr, *vtvar;
11350
11351                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11352
11353                                         if (context_used) {
11354                                                 if (handle_class == mono_defaults.typehandle_class) {
11355                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11356                                                                         mono_class_from_mono_type ((MonoType *)handle),
11357                                                                         MONO_RGCTX_INFO_TYPE);
11358                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11359                                                         ins = emit_get_rgctx_method (cfg, context_used,
11360                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11361                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11362                                                         ins = emit_get_rgctx_field (cfg, context_used,
11363                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11364                                                 } else {
11365                                                         g_assert_not_reached ();
11366                                                 }
11367                                         } else if (cfg->compile_aot) {
11368                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11369                                         } else {
11370                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11371                                         }
11372                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11373                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11374                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11375                                 }
11376                         }
11377
11378                         *sp++ = ins;
11379                         ip += 5;
11380                         break;
11381                 }
11382                 case CEE_THROW:
11383                         CHECK_STACK (1);
11384                         if (sp [-1]->type != STACK_OBJ)
11385                                 UNVERIFIED;
11386
11387                         MONO_INST_NEW (cfg, ins, OP_THROW);
11388                         --sp;
11389                         ins->sreg1 = sp [0]->dreg;
11390                         ip++;
11391                         cfg->cbb->out_of_line = TRUE;
11392                         MONO_ADD_INS (cfg->cbb, ins);
11393                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11394                         MONO_ADD_INS (cfg->cbb, ins);
11395                         sp = stack_start;
11396
11397                         link_bblock (cfg, cfg->cbb, end_bblock);
11398                         start_new_bblock = 1;
11399                         /* This can complicate code generation for llvm since the return value might not be defined */
11400                         if (COMPILE_LLVM (cfg))
11401                                 INLINE_FAILURE ("throw");
11402                         break;
11403                 case CEE_ENDFINALLY:
11404                         if (!ip_in_finally_clause (cfg, ip - header->code))
11405                                 UNVERIFIED;
11406                         /* mono_save_seq_point_info () depends on this */
11407                         if (sp != stack_start)
11408                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11409                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11410                         MONO_ADD_INS (cfg->cbb, ins);
11411                         ip++;
11412                         start_new_bblock = 1;
11413
11414                         /*
11415                          * Control will leave the method so empty the stack, otherwise
11416                          * the next basic block will start with a nonempty stack.
11417                          */
11418                         while (sp != stack_start) {
11419                                 sp--;
11420                         }
11421                         break;
11422                 case CEE_LEAVE:
11423                 case CEE_LEAVE_S: {
11424                         GList *handlers;
11425
11426                         if (*ip == CEE_LEAVE) {
11427                                 CHECK_OPSIZE (5);
11428                                 target = ip + 5 + (gint32)read32(ip + 1);
11429                         } else {
11430                                 CHECK_OPSIZE (2);
11431                                 target = ip + 2 + (signed char)(ip [1]);
11432                         }
11433
11434                         /* empty the stack */
11435                         while (sp != stack_start) {
11436                                 sp--;
11437                         }
11438
11439                         /*
11440                          * If this leave statement is in a catch block, check for a
11441                          * pending exception, and rethrow it if necessary.
11442                          * We avoid doing this in runtime invoke wrappers, since those are called
11443                          * by native code which excepts the wrapper to catch all exceptions.
11444                          */
11445                         for (i = 0; i < header->num_clauses; ++i) {
11446                                 MonoExceptionClause *clause = &header->clauses [i];
11447
11448                                 /*
11449                                  * Use <= in the final comparison to handle clauses with multiple
11450                                  * leave statements, like in bug #78024.
11451                                  * The ordering of the exception clauses guarantees that we find the
11452                                  * innermost clause.
11453                                  */
11454                                 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) {
11455                                         MonoInst *exc_ins;
11456                                         MonoBasicBlock *dont_throw;
11457
11458                                         /*
11459                                           MonoInst *load;
11460
11461                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11462                                         */
11463
11464                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11465
11466                                         NEW_BBLOCK (cfg, dont_throw);
11467
11468                                         /*
11469                                          * Currently, we always rethrow the abort exception, despite the
11470                                          * fact that this is not correct. See thread6.cs for an example.
11471                                          * But propagating the abort exception is more important than
11472                                          * getting the sematics right.
11473                                          */
11474                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11475                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11476                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11477
11478                                         MONO_START_BB (cfg, dont_throw);
11479                                 }
11480                         }
11481
11482 #ifdef ENABLE_LLVM
11483                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11484 #endif
11485
11486                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11487                                 GList *tmp;
11488
11489                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11490                                         MonoExceptionClause *clause = (MonoExceptionClause *)tmp->data;
11491                                         MonoInst *abort_exc = (MonoInst *)mono_find_exvar_for_offset (cfg, clause->handler_offset);
11492                                         MonoBasicBlock *dont_throw;
11493
11494                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11495                                         g_assert (tblock);
11496                                         link_bblock (cfg, cfg->cbb, tblock);
11497
11498                                         MONO_EMIT_NEW_PCONST (cfg, abort_exc->dreg, 0);
11499
11500                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11501                                         ins->inst_target_bb = tblock;
11502                                         ins->inst_eh_block = clause;
11503                                         MONO_ADD_INS (cfg->cbb, ins);
11504                                         cfg->cbb->has_call_handler = 1;
11505
11506                                         /* Throw exception if exvar is set */
11507                                         /* FIXME Do we need this for calls from catch/filter ? */
11508                                         NEW_BBLOCK (cfg, dont_throw);
11509                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, abort_exc->dreg, 0);
11510                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11511                                         mono_emit_jit_icall (cfg, mono_thread_self_abort, NULL);
11512                                         cfg->cbb->clause_hole = clause;
11513
11514                                         MONO_START_BB (cfg, dont_throw);
11515                                         cfg->cbb->clause_hole = clause;
11516
11517                                         if (COMPILE_LLVM (cfg)) {
11518                                                 MonoBasicBlock *target_bb;
11519
11520                                                 /*
11521                                                  * Link the finally bblock with the target, since it will
11522                                                  * conceptually branch there.
11523                                                  */
11524                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11525                                                 GET_BBLOCK (cfg, target_bb, target);
11526                                                 link_bblock (cfg, tblock, target_bb);
11527                                         }
11528                                 }
11529                                 g_list_free (handlers);
11530                         }
11531
11532                         MONO_INST_NEW (cfg, ins, OP_BR);
11533                         MONO_ADD_INS (cfg->cbb, ins);
11534                         GET_BBLOCK (cfg, tblock, target);
11535                         link_bblock (cfg, cfg->cbb, tblock);
11536                         ins->inst_target_bb = tblock;
11537
11538                         start_new_bblock = 1;
11539
11540                         if (*ip == CEE_LEAVE)
11541                                 ip += 5;
11542                         else
11543                                 ip += 2;
11544
11545                         break;
11546                 }
11547
11548                         /*
11549                          * Mono specific opcodes
11550                          */
11551                 case MONO_CUSTOM_PREFIX: {
11552
11553                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11554
11555                         CHECK_OPSIZE (2);
11556                         switch (ip [1]) {
11557                         case CEE_MONO_ICALL: {
11558                                 gpointer func;
11559                                 MonoJitICallInfo *info;
11560
11561                                 token = read32 (ip + 2);
11562                                 func = mono_method_get_wrapper_data (method, token);
11563                                 info = mono_find_jit_icall_by_addr (func);
11564                                 if (!info)
11565                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11566                                 g_assert (info);
11567
11568                                 CHECK_STACK (info->sig->param_count);
11569                                 sp -= info->sig->param_count;
11570
11571                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11572                                         MonoInst *addr;
11573
11574                                         /*
11575                                          * This is called on unattached threads, so it cannot go through the trampoline
11576                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11577                                          * instead.
11578                                          */
11579                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11580                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11581                                 } else {
11582                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11583                                 }
11584
11585                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11586                                         *sp++ = ins;
11587
11588                                 ip += 6;
11589                                 inline_costs += 10 * num_calls++;
11590
11591                                 break;
11592                         }
11593                         case CEE_MONO_LDPTR_CARD_TABLE:
11594                         case CEE_MONO_LDPTR_NURSERY_START:
11595                         case CEE_MONO_LDPTR_NURSERY_BITS:
11596                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11597                         case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT: {
11598                                 CHECK_STACK_OVF (1);
11599
11600                                 switch (ip [1]) {
11601                                 case CEE_MONO_LDPTR_CARD_TABLE:
11602                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11603                                         break;
11604                                 case CEE_MONO_LDPTR_NURSERY_START:
11605                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11606                                         break;
11607                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11608                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11609                                         break;
11610                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11611                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11612                                         break;
11613                                 case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT:
11614                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT, NULL);
11615                                         break;
11616                                 default:
11617                                         g_assert_not_reached ();
11618                                         break;
11619                                 }
11620
11621                                 *sp++ = ins;
11622                                 ip += 2;
11623                                 inline_costs += 10 * num_calls++;
11624                                 break;
11625                         }
11626                         case CEE_MONO_LDPTR: {
11627                                 gpointer ptr;
11628
11629                                 CHECK_STACK_OVF (1);
11630                                 CHECK_OPSIZE (6);
11631                                 token = read32 (ip + 2);
11632
11633                                 ptr = mono_method_get_wrapper_data (method, token);
11634                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11635                                 *sp++ = ins;
11636                                 ip += 6;
11637                                 inline_costs += 10 * num_calls++;
11638                                 /* Can't embed random pointers into AOT code */
11639                                 DISABLE_AOT (cfg);
11640                                 break;
11641                         }
11642                         case CEE_MONO_JIT_ICALL_ADDR: {
11643                                 MonoJitICallInfo *callinfo;
11644                                 gpointer ptr;
11645
11646                                 CHECK_STACK_OVF (1);
11647                                 CHECK_OPSIZE (6);
11648                                 token = read32 (ip + 2);
11649
11650                                 ptr = mono_method_get_wrapper_data (method, token);
11651                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11652                                 g_assert (callinfo);
11653                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11654                                 *sp++ = ins;
11655                                 ip += 6;
11656                                 inline_costs += 10 * num_calls++;
11657                                 break;
11658                         }
11659                         case CEE_MONO_ICALL_ADDR: {
11660                                 MonoMethod *cmethod;
11661                                 gpointer ptr;
11662
11663                                 CHECK_STACK_OVF (1);
11664                                 CHECK_OPSIZE (6);
11665                                 token = read32 (ip + 2);
11666
11667                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11668
11669                                 if (cfg->compile_aot) {
11670                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11671                                                 /*
11672                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11673                                                  * before the call, its not needed when using direct pinvoke.
11674                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11675                                                  * on platforms which don't support dlopen ().
11676                                                  */
11677                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11678                                         } else {
11679                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11680                                         }
11681                                 } else {
11682                                         ptr = mono_lookup_internal_call (cmethod);
11683                                         g_assert (ptr);
11684                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11685                                 }
11686                                 *sp++ = ins;
11687                                 ip += 6;
11688                                 break;
11689                         }
11690                         case CEE_MONO_VTADDR: {
11691                                 MonoInst *src_var, *src;
11692
11693                                 CHECK_STACK (1);
11694                                 --sp;
11695
11696                                 // FIXME:
11697                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11698                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11699                                 *sp++ = src;
11700                                 ip += 2;
11701                                 break;
11702                         }
11703                         case CEE_MONO_NEWOBJ: {
11704                                 MonoInst *iargs [2];
11705
11706                                 CHECK_STACK_OVF (1);
11707                                 CHECK_OPSIZE (6);
11708                                 token = read32 (ip + 2);
11709                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11710                                 mono_class_init (klass);
11711                                 NEW_DOMAINCONST (cfg, iargs [0]);
11712                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11713                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11714                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11715                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11716                                 ip += 6;
11717                                 inline_costs += 10 * num_calls++;
11718                                 break;
11719                         }
11720                         case CEE_MONO_OBJADDR:
11721                                 CHECK_STACK (1);
11722                                 --sp;
11723                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11724                                 ins->dreg = alloc_ireg_mp (cfg);
11725                                 ins->sreg1 = sp [0]->dreg;
11726                                 ins->type = STACK_MP;
11727                                 MONO_ADD_INS (cfg->cbb, ins);
11728                                 *sp++ = ins;
11729                                 ip += 2;
11730                                 break;
11731                         case CEE_MONO_LDNATIVEOBJ:
11732                                 /*
11733                                  * Similar to LDOBJ, but instead load the unmanaged
11734                                  * representation of the vtype to the stack.
11735                                  */
11736                                 CHECK_STACK (1);
11737                                 CHECK_OPSIZE (6);
11738                                 --sp;
11739                                 token = read32 (ip + 2);
11740                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11741                                 g_assert (klass->valuetype);
11742                                 mono_class_init (klass);
11743
11744                                 {
11745                                         MonoInst *src, *dest, *temp;
11746
11747                                         src = sp [0];
11748                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11749                                         temp->backend.is_pinvoke = 1;
11750                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11751                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11752
11753                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11754                                         dest->type = STACK_VTYPE;
11755                                         dest->klass = klass;
11756
11757                                         *sp ++ = dest;
11758                                         ip += 6;
11759                                 }
11760                                 break;
11761                         case CEE_MONO_RETOBJ: {
11762                                 /*
11763                                  * Same as RET, but return the native representation of a vtype
11764                                  * to the caller.
11765                                  */
11766                                 g_assert (cfg->ret);
11767                                 g_assert (mono_method_signature (method)->pinvoke);
11768                                 CHECK_STACK (1);
11769                                 --sp;
11770
11771                                 CHECK_OPSIZE (6);
11772                                 token = read32 (ip + 2);
11773                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11774
11775                                 if (!cfg->vret_addr) {
11776                                         g_assert (cfg->ret_var_is_local);
11777
11778                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11779                                 } else {
11780                                         EMIT_NEW_RETLOADA (cfg, ins);
11781                                 }
11782                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11783
11784                                 if (sp != stack_start)
11785                                         UNVERIFIED;
11786
11787                                 mini_profiler_emit_leave (cfg, sp [0]);
11788
11789                                 MONO_INST_NEW (cfg, ins, OP_BR);
11790                                 ins->inst_target_bb = end_bblock;
11791                                 MONO_ADD_INS (cfg->cbb, ins);
11792                                 link_bblock (cfg, cfg->cbb, end_bblock);
11793                                 start_new_bblock = 1;
11794                                 ip += 6;
11795                                 break;
11796                         }
11797                         case CEE_MONO_SAVE_LMF:
11798                         case CEE_MONO_RESTORE_LMF:
11799                                 ip += 2;
11800                                 break;
11801                         case CEE_MONO_CLASSCONST:
11802                                 CHECK_STACK_OVF (1);
11803                                 CHECK_OPSIZE (6);
11804                                 token = read32 (ip + 2);
11805                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11806                                 *sp++ = ins;
11807                                 ip += 6;
11808                                 inline_costs += 10 * num_calls++;
11809                                 break;
11810                         case CEE_MONO_NOT_TAKEN:
11811                                 cfg->cbb->out_of_line = TRUE;
11812                                 ip += 2;
11813                                 break;
11814                         case CEE_MONO_TLS: {
11815                                 MonoTlsKey key;
11816
11817                                 CHECK_STACK_OVF (1);
11818                                 CHECK_OPSIZE (6);
11819                                 key = (MonoTlsKey)read32 (ip + 2);
11820                                 g_assert (key < TLS_KEY_NUM);
11821
11822                                 ins = mono_create_tls_get (cfg, key);
11823                                 g_assert (ins);
11824                                 ins->type = STACK_PTR;
11825                                 *sp++ = ins;
11826                                 ip += 6;
11827                                 break;
11828                         }
11829                         case CEE_MONO_DYN_CALL: {
11830                                 MonoCallInst *call;
11831
11832                                 /* It would be easier to call a trampoline, but that would put an
11833                                  * extra frame on the stack, confusing exception handling. So
11834                                  * implement it inline using an opcode for now.
11835                                  */
11836
11837                                 if (!cfg->dyn_call_var) {
11838                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11839                                         /* prevent it from being register allocated */
11840                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11841                                 }
11842
11843                                 /* Has to use a call inst since local regalloc expects it */
11844                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11845                                 ins = (MonoInst*)call;
11846                                 sp -= 2;
11847                                 ins->sreg1 = sp [0]->dreg;
11848                                 ins->sreg2 = sp [1]->dreg;
11849                                 MONO_ADD_INS (cfg->cbb, ins);
11850
11851                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11852                                 /* OP_DYN_CALL might need to allocate a dynamically sized param area */
11853                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11854
11855                                 ip += 2;
11856                                 inline_costs += 10 * num_calls++;
11857
11858                                 break;
11859                         }
11860                         case CEE_MONO_MEMORY_BARRIER: {
11861                                 CHECK_OPSIZE (6);
11862                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11863                                 ip += 6;
11864                                 break;
11865                         }
11866                         case CEE_MONO_ATOMIC_STORE_I4: {
11867                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11868
11869                                 CHECK_OPSIZE (6);
11870                                 CHECK_STACK (2);
11871                                 sp -= 2;
11872
11873                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11874                                 ins->dreg = sp [0]->dreg;
11875                                 ins->sreg1 = sp [1]->dreg;
11876                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11877                                 MONO_ADD_INS (cfg->cbb, ins);
11878
11879                                 ip += 6;
11880                                 break;
11881                         }
11882                         case CEE_MONO_JIT_ATTACH: {
11883                                 MonoInst *args [16], *domain_ins;
11884                                 MonoInst *ad_ins, *jit_tls_ins;
11885                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11886
11887                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11888
11889                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11890
11891                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11892                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11893
11894                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11895                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11896
11897                                 if (ad_ins && jit_tls_ins) {
11898                                         NEW_BBLOCK (cfg, next_bb);
11899                                         NEW_BBLOCK (cfg, call_bb);
11900
11901                                         if (cfg->compile_aot) {
11902                                                 /* AOT code is only used in the root domain */
11903                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11904                                         } else {
11905                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11906                                         }
11907                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11908                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11909
11910                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11911                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11912
11913                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11914                                         MONO_START_BB (cfg, call_bb);
11915                                 }
11916
11917                                 /* AOT code is only used in the root domain */
11918                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11919                                 if (cfg->compile_aot) {
11920                                         MonoInst *addr;
11921
11922                                         /*
11923                                          * This is called on unattached threads, so it cannot go through the trampoline
11924                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11925                                          * instead.
11926                                          */
11927                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11928                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11929                                 } else {
11930                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11931                                 }
11932                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11933
11934                                 if (next_bb)
11935                                         MONO_START_BB (cfg, next_bb);
11936
11937                                 ip += 2;
11938                                 break;
11939                         }
11940                         case CEE_MONO_JIT_DETACH: {
11941                                 MonoInst *args [16];
11942
11943                                 /* Restore the original domain */
11944                                 dreg = alloc_ireg (cfg);
11945                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11946                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11947                                 ip += 2;
11948                                 break;
11949                         }
11950                         case CEE_MONO_CALLI_EXTRA_ARG: {
11951                                 MonoInst *addr;
11952                                 MonoMethodSignature *fsig;
11953                                 MonoInst *arg;
11954
11955                                 /*
11956                                  * This is the same as CEE_CALLI, but passes an additional argument
11957                                  * to the called method in llvmonly mode.
11958                                  * This is only used by delegate invoke wrappers to call the
11959                                  * actual delegate method.
11960                                  */
11961                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11962
11963                                 CHECK_OPSIZE (6);
11964                                 token = read32 (ip + 2);
11965
11966                                 ins = NULL;
11967
11968                                 cmethod = NULL;
11969                                 CHECK_STACK (1);
11970                                 --sp;
11971                                 addr = *sp;
11972                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11973                                 CHECK_CFG_ERROR;
11974
11975                                 if (cfg->llvm_only)
11976                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11977
11978                                 n = fsig->param_count + fsig->hasthis + 1;
11979
11980                                 CHECK_STACK (n);
11981
11982                                 sp -= n;
11983                                 arg = sp [n - 1];
11984
11985                                 if (cfg->llvm_only) {
11986                                         /*
11987                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11988                                          * cconv. This is set by mono_init_delegate ().
11989                                          */
11990                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11991                                                 MonoInst *callee = addr;
11992                                                 MonoInst *call, *localloc_ins;
11993                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11994                                                 int low_bit_reg = alloc_preg (cfg);
11995
11996                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11997                                                 NEW_BBLOCK (cfg, end_bb);
11998
11999                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12000                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12001                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12002
12003                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12004                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12005                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12006                                                 /*
12007                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12008                                                  */
12009                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12010                                                 ins->dreg = alloc_preg (cfg);
12011                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12012                                                 MONO_ADD_INS (cfg->cbb, ins);
12013                                                 localloc_ins = ins;
12014                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12015                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12016                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12017
12018                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12019                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12020
12021                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12022                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12023                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12024                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12025                                                 ins->dreg = call->dreg;
12026
12027                                                 MONO_START_BB (cfg, end_bb);
12028                                         } else {
12029                                                 /* Caller uses a normal calling conv */
12030
12031                                                 MonoInst *callee = addr;
12032                                                 MonoInst *call, *localloc_ins;
12033                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12034                                                 int low_bit_reg = alloc_preg (cfg);
12035
12036                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12037                                                 NEW_BBLOCK (cfg, end_bb);
12038
12039                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12040                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12041                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12042
12043                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12044                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12045                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12046                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12047                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12048                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12049                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12050                                                 MONO_ADD_INS (cfg->cbb, addr);
12051                                                 /*
12052                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12053                                                  */
12054                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12055                                                 ins->dreg = alloc_preg (cfg);
12056                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12057                                                 MONO_ADD_INS (cfg->cbb, ins);
12058                                                 localloc_ins = ins;
12059                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12060                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12061                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12062
12063                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12064                                                 ins->dreg = call->dreg;
12065                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12066
12067                                                 MONO_START_BB (cfg, end_bb);
12068                                         }
12069                                 } else {
12070                                         /* Same as CEE_CALLI */
12071                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12072                                                 /*
12073                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12074                                                  */
12075                                                 MonoInst *callee = addr;
12076
12077                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12078                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12079                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12080                                         } else {
12081                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12082                                         }
12083                                 }
12084
12085                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12086                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12087
12088                                 CHECK_CFG_EXCEPTION;
12089
12090                                 ip += 6;
12091                                 ins_flag = 0;
12092                                 constrained_class = NULL;
12093                                 break;
12094                         }
12095                         case CEE_MONO_LDDOMAIN:
12096                                 CHECK_STACK_OVF (1);
12097                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12098                                 ip += 2;
12099                                 *sp++ = ins;
12100                                 break;
12101                         case CEE_MONO_GET_LAST_ERROR:
12102                                 CHECK_OPSIZE (2);
12103                                 CHECK_STACK_OVF (1);
12104
12105                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12106                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12107                                 ins->type = STACK_I4;
12108                                 MONO_ADD_INS (cfg->cbb, ins);
12109
12110                                 ip += 2;
12111                                 *sp++ = ins;
12112                                 break;
12113                         case CEE_MONO_GET_RGCTX_ARG:
12114                                 CHECK_OPSIZE (2);
12115                                 CHECK_STACK_OVF (1);
12116
12117                                 mono_create_rgctx_var (cfg);
12118
12119                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12120                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12121                                 ins->sreg1 = cfg->rgctx_var->dreg;
12122                                 ins->type = STACK_PTR;
12123                                 MONO_ADD_INS (cfg->cbb, ins);
12124
12125                                 ip += 2;
12126                                 *sp++ = ins;
12127                                 break;
12128                         default:
12129                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12130                                 break;
12131                         }
12132                         break;
12133                 }
12134
12135                 case CEE_PREFIX1: {
12136                         CHECK_OPSIZE (2);
12137                         switch (ip [1]) {
12138                         case CEE_ARGLIST: {
12139                                 /* somewhat similar to LDTOKEN */
12140                                 MonoInst *addr, *vtvar;
12141                                 CHECK_STACK_OVF (1);
12142                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12143
12144                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12145                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12146
12147                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12148                                 ins->type = STACK_VTYPE;
12149                                 ins->klass = mono_defaults.argumenthandle_class;
12150                                 *sp++ = ins;
12151                                 ip += 2;
12152                                 break;
12153                         }
12154                         case CEE_CEQ:
12155                         case CEE_CGT:
12156                         case CEE_CGT_UN:
12157                         case CEE_CLT:
12158                         case CEE_CLT_UN: {
12159                                 MonoInst *cmp, *arg1, *arg2;
12160
12161                                 CHECK_STACK (2);
12162                                 sp -= 2;
12163                                 arg1 = sp [0];
12164                                 arg2 = sp [1];
12165
12166                                 /*
12167                                  * The following transforms:
12168                                  *    CEE_CEQ    into OP_CEQ
12169                                  *    CEE_CGT    into OP_CGT
12170                                  *    CEE_CGT_UN into OP_CGT_UN
12171                                  *    CEE_CLT    into OP_CLT
12172                                  *    CEE_CLT_UN into OP_CLT_UN
12173                                  */
12174                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12175
12176                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12177                                 cmp->sreg1 = arg1->dreg;
12178                                 cmp->sreg2 = arg2->dreg;
12179                                 type_from_op (cfg, cmp, arg1, arg2);
12180                                 CHECK_TYPE (cmp);
12181                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12182                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12183                                         cmp->opcode = OP_LCOMPARE;
12184                                 else if (arg1->type == STACK_R4)
12185                                         cmp->opcode = OP_RCOMPARE;
12186                                 else if (arg1->type == STACK_R8)
12187                                         cmp->opcode = OP_FCOMPARE;
12188                                 else
12189                                         cmp->opcode = OP_ICOMPARE;
12190                                 MONO_ADD_INS (cfg->cbb, cmp);
12191                                 ins->type = STACK_I4;
12192                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12193                                 type_from_op (cfg, ins, arg1, arg2);
12194
12195                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12196                                         /*
12197                                          * The backends expect the fceq opcodes to do the
12198                                          * comparison too.
12199                                          */
12200                                         ins->sreg1 = cmp->sreg1;
12201                                         ins->sreg2 = cmp->sreg2;
12202                                         NULLIFY_INS (cmp);
12203                                 }
12204                                 MONO_ADD_INS (cfg->cbb, ins);
12205                                 *sp++ = ins;
12206                                 ip += 2;
12207                                 break;
12208                         }
12209                         case CEE_LDFTN: {
12210                                 MonoInst *argconst;
12211                                 MonoMethod *cil_method;
12212
12213                                 CHECK_STACK_OVF (1);
12214                                 CHECK_OPSIZE (6);
12215                                 n = read32 (ip + 2);
12216                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12217                                 CHECK_CFG_ERROR;
12218
12219                                 mono_class_init (cmethod->klass);
12220
12221                                 mono_save_token_info (cfg, image, n, cmethod);
12222
12223                                 context_used = mini_method_check_context_used (cfg, cmethod);
12224
12225                                 cil_method = cmethod;
12226                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12227                                         emit_method_access_failure (cfg, method, cil_method);
12228
12229                                 if (mono_security_core_clr_enabled ())
12230                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12231
12232                                 /*
12233                                  * Optimize the common case of ldftn+delegate creation
12234                                  */
12235                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12236                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12237                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12238                                                 MonoInst *target_ins, *handle_ins;
12239                                                 MonoMethod *invoke;
12240                                                 int invoke_context_used;
12241
12242                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12243                                                 if (!invoke || !mono_method_signature (invoke))
12244                                                         LOAD_ERROR;
12245
12246                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12247
12248                                                 target_ins = sp [-1];
12249
12250                                                 if (mono_security_core_clr_enabled ())
12251                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12252
12253                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12254                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12255                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12256                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12257                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12258                                                         }
12259                                                 }
12260
12261                                                 /* FIXME: SGEN support */
12262                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12263                                                         ip += 6;
12264                                                         if (cfg->verbose_level > 3)
12265                                                                 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));
12266                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12267                                                                 sp --;
12268                                                                 *sp = handle_ins;
12269                                                                 CHECK_CFG_EXCEPTION;
12270                                                                 ip += 5;
12271                                                                 sp ++;
12272                                                                 break;
12273                                                         }
12274                                                         ip -= 6;
12275                                                 }
12276                                         }
12277                                 }
12278
12279                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12280                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12281                                 *sp++ = ins;
12282
12283                                 ip += 6;
12284                                 inline_costs += 10 * num_calls++;
12285                                 break;
12286                         }
12287                         case CEE_LDVIRTFTN: {
12288                                 MonoInst *args [2];
12289
12290                                 CHECK_STACK (1);
12291                                 CHECK_OPSIZE (6);
12292                                 n = read32 (ip + 2);
12293                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12294                                 CHECK_CFG_ERROR;
12295
12296                                 mono_class_init (cmethod->klass);
12297
12298                                 context_used = mini_method_check_context_used (cfg, cmethod);
12299
12300                                 if (mono_security_core_clr_enabled ())
12301                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12302
12303                                 /*
12304                                  * Optimize the common case of ldvirtftn+delegate creation
12305                                  */
12306                                 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)) {
12307                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12308                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12309                                                 MonoInst *target_ins, *handle_ins;
12310                                                 MonoMethod *invoke;
12311                                                 int invoke_context_used;
12312                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12313
12314                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12315                                                 if (!invoke || !mono_method_signature (invoke))
12316                                                         LOAD_ERROR;
12317
12318                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12319
12320                                                 target_ins = sp [-1];
12321
12322                                                 if (mono_security_core_clr_enabled ())
12323                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12324
12325                                                 /* FIXME: SGEN support */
12326                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12327                                                         ip += 6;
12328                                                         if (cfg->verbose_level > 3)
12329                                                                 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));
12330                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12331                                                                 sp -= 2;
12332                                                                 *sp = handle_ins;
12333                                                                 CHECK_CFG_EXCEPTION;
12334                                                                 ip += 5;
12335                                                                 sp ++;
12336                                                                 break;
12337                                                         }
12338                                                         ip -= 6;
12339                                                 }
12340                                         }
12341                                 }
12342
12343                                 --sp;
12344                                 args [0] = *sp;
12345
12346                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12347                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12348
12349                                 if (context_used)
12350                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12351                                 else
12352                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12353
12354                                 ip += 6;
12355                                 inline_costs += 10 * num_calls++;
12356                                 break;
12357                         }
12358                         case CEE_LDARG:
12359                                 CHECK_STACK_OVF (1);
12360                                 CHECK_OPSIZE (4);
12361                                 n = read16 (ip + 2);
12362                                 CHECK_ARG (n);
12363                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12364                                 *sp++ = ins;
12365                                 ip += 4;
12366                                 break;
12367                         case CEE_LDARGA:
12368                                 CHECK_STACK_OVF (1);
12369                                 CHECK_OPSIZE (4);
12370                                 n = read16 (ip + 2);
12371                                 CHECK_ARG (n);
12372                                 NEW_ARGLOADA (cfg, ins, n);
12373                                 MONO_ADD_INS (cfg->cbb, ins);
12374                                 *sp++ = ins;
12375                                 ip += 4;
12376                                 break;
12377                         case CEE_STARG:
12378                                 CHECK_STACK (1);
12379                                 --sp;
12380                                 CHECK_OPSIZE (4);
12381                                 n = read16 (ip + 2);
12382                                 CHECK_ARG (n);
12383                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12384                                         UNVERIFIED;
12385                                 emit_starg_ir (cfg, sp, n);
12386                                 ip += 4;
12387                                 break;
12388                         case CEE_LDLOC:
12389                                 CHECK_STACK_OVF (1);
12390                                 CHECK_OPSIZE (4);
12391                                 n = read16 (ip + 2);
12392                                 CHECK_LOCAL (n);
12393                                 if ((ip [4] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 4) && header->locals [n]->type == MONO_TYPE_VALUETYPE) {
12394                                         /* Avoid loading a struct just to load one of its fields */
12395                                         EMIT_NEW_LOCLOADA (cfg, ins, n);
12396                                 } else {
12397                                         EMIT_NEW_LOCLOAD (cfg, ins, n);
12398                                 }
12399                                 *sp++ = ins;
12400                                 ip += 4;
12401                                 break;
12402                         case CEE_LDLOCA: {
12403                                 unsigned char *tmp_ip;
12404                                 CHECK_STACK_OVF (1);
12405                                 CHECK_OPSIZE (4);
12406                                 n = read16 (ip + 2);
12407                                 CHECK_LOCAL (n);
12408
12409                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12410                                         ip = tmp_ip;
12411                                         inline_costs += 1;
12412                                         break;
12413                                 }
12414
12415                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12416                                 *sp++ = ins;
12417                                 ip += 4;
12418                                 break;
12419                         }
12420                         case CEE_STLOC:
12421                                 CHECK_STACK (1);
12422                                 --sp;
12423                                 CHECK_OPSIZE (4);
12424                                 n = read16 (ip + 2);
12425                                 CHECK_LOCAL (n);
12426                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12427                                         UNVERIFIED;
12428                                 emit_stloc_ir (cfg, sp, header, n);
12429                                 ip += 4;
12430                                 inline_costs += 1;
12431                                 break;
12432                         case CEE_LOCALLOC: {
12433                                 CHECK_STACK (1);
12434                                 MonoBasicBlock *non_zero_bb, *end_bb;
12435                                 int alloc_ptr = alloc_preg (cfg);
12436                                 --sp;
12437                                 if (sp != stack_start)
12438                                         UNVERIFIED;
12439                                 if (cfg->method != method)
12440                                         /*
12441                                          * Inlining this into a loop in a parent could lead to
12442                                          * stack overflows which is different behavior than the
12443                                          * non-inlined case, thus disable inlining in this case.
12444                                          */
12445                                         INLINE_FAILURE("localloc");
12446
12447                                 NEW_BBLOCK (cfg, non_zero_bb);
12448                                 NEW_BBLOCK (cfg, end_bb);
12449
12450                                 /* if size != zero */
12451                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12452                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12453
12454                                 //size is zero, so result is NULL
12455                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12456                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12457
12458                                 MONO_START_BB (cfg, non_zero_bb);
12459                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12460                                 ins->dreg = alloc_ptr;
12461                                 ins->sreg1 = sp [0]->dreg;
12462                                 ins->type = STACK_PTR;
12463                                 MONO_ADD_INS (cfg->cbb, ins);
12464
12465                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12466                                 if (init_locals)
12467                                         ins->flags |= MONO_INST_INIT;
12468
12469                                 MONO_START_BB (cfg, end_bb);
12470                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12471                                 ins->type = STACK_PTR;
12472
12473                                 *sp++ = ins;
12474                                 ip += 2;
12475                                 break;
12476                         }
12477                         case CEE_ENDFILTER: {
12478                                 MonoExceptionClause *clause, *nearest;
12479                                 int cc;
12480
12481                                 CHECK_STACK (1);
12482                                 --sp;
12483                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12484                                         UNVERIFIED;
12485                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12486                                 ins->sreg1 = (*sp)->dreg;
12487                                 MONO_ADD_INS (cfg->cbb, ins);
12488                                 start_new_bblock = 1;
12489                                 ip += 2;
12490
12491                                 nearest = NULL;
12492                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12493                                         clause = &header->clauses [cc];
12494                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12495                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12496                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12497                                                 nearest = clause;
12498                                 }
12499                                 g_assert (nearest);
12500                                 if ((ip - header->code) != nearest->handler_offset)
12501                                         UNVERIFIED;
12502
12503                                 break;
12504                         }
12505                         case CEE_UNALIGNED_:
12506                                 ins_flag |= MONO_INST_UNALIGNED;
12507                                 /* FIXME: record alignment? we can assume 1 for now */
12508                                 CHECK_OPSIZE (3);
12509                                 ip += 3;
12510                                 break;
12511                         case CEE_VOLATILE_:
12512                                 ins_flag |= MONO_INST_VOLATILE;
12513                                 ip += 2;
12514                                 break;
12515                         case CEE_TAIL_:
12516                                 ins_flag   |= MONO_INST_TAILCALL;
12517                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12518                                 /* Can't inline tail calls at this time */
12519                                 inline_costs += 100000;
12520                                 ip += 2;
12521                                 break;
12522                         case CEE_INITOBJ:
12523                                 CHECK_STACK (1);
12524                                 --sp;
12525                                 CHECK_OPSIZE (6);
12526                                 token = read32 (ip + 2);
12527                                 klass = mini_get_class (method, token, generic_context);
12528                                 CHECK_TYPELOAD (klass);
12529                                 if (generic_class_is_reference_type (cfg, klass))
12530                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12531                                 else
12532                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12533                                 ip += 6;
12534                                 inline_costs += 1;
12535                                 break;
12536                         case CEE_CONSTRAINED_:
12537                                 CHECK_OPSIZE (6);
12538                                 token = read32 (ip + 2);
12539                                 constrained_class = mini_get_class (method, token, generic_context);
12540                                 CHECK_TYPELOAD (constrained_class);
12541                                 ip += 6;
12542                                 break;
12543                         case CEE_CPBLK:
12544                                 CHECK_STACK (3);
12545                                 sp -= 3;
12546                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12547                                 ip += 2;
12548                                 ins_flag = 0;
12549                                 inline_costs += 1;
12550                                 break;
12551                         case CEE_INITBLK:
12552                                 CHECK_STACK (3);
12553                                 sp -= 3;
12554                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12555                                 ip += 2;
12556                                 ins_flag = 0;
12557                                 inline_costs += 1;
12558                                 break;
12559                         case CEE_NO_:
12560                                 CHECK_OPSIZE (3);
12561                                 if (ip [2] & 0x1)
12562                                         ins_flag |= MONO_INST_NOTYPECHECK;
12563                                 if (ip [2] & 0x2)
12564                                         ins_flag |= MONO_INST_NORANGECHECK;
12565                                 /* we ignore the no-nullcheck for now since we
12566                                  * really do it explicitly only when doing callvirt->call
12567                                  */
12568                                 ip += 3;
12569                                 break;
12570                         case CEE_RETHROW: {
12571                                 MonoInst *load;
12572                                 int handler_offset = -1;
12573
12574                                 for (i = 0; i < header->num_clauses; ++i) {
12575                                         MonoExceptionClause *clause = &header->clauses [i];
12576                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12577                                                 handler_offset = clause->handler_offset;
12578                                                 break;
12579                                         }
12580                                 }
12581
12582                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12583
12584                                 if (handler_offset == -1)
12585                                         UNVERIFIED;
12586
12587                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12588                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12589                                 ins->sreg1 = load->dreg;
12590                                 MONO_ADD_INS (cfg->cbb, ins);
12591
12592                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12593                                 MONO_ADD_INS (cfg->cbb, ins);
12594
12595                                 sp = stack_start;
12596                                 link_bblock (cfg, cfg->cbb, end_bblock);
12597                                 start_new_bblock = 1;
12598                                 ip += 2;
12599                                 break;
12600                         }
12601                         case CEE_SIZEOF: {
12602                                 guint32 val;
12603                                 int ialign;
12604
12605                                 CHECK_STACK_OVF (1);
12606                                 CHECK_OPSIZE (6);
12607                                 token = read32 (ip + 2);
12608                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12609                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12610                                         CHECK_CFG_ERROR;
12611
12612                                         val = mono_type_size (type, &ialign);
12613                                 } else {
12614                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12615                                         CHECK_TYPELOAD (klass);
12616
12617                                         val = mono_type_size (&klass->byval_arg, &ialign);
12618
12619                                         if (mini_is_gsharedvt_klass (klass))
12620                                                 GSHAREDVT_FAILURE (*ip);
12621                                 }
12622                                 EMIT_NEW_ICONST (cfg, ins, val);
12623                                 *sp++= ins;
12624                                 ip += 6;
12625                                 break;
12626                         }
12627                         case CEE_REFANYTYPE: {
12628                                 MonoInst *src_var, *src;
12629
12630                                 GSHAREDVT_FAILURE (*ip);
12631
12632                                 CHECK_STACK (1);
12633                                 --sp;
12634
12635                                 // FIXME:
12636                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12637                                 if (!src_var)
12638                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12639                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12640                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12641                                 *sp++ = ins;
12642                                 ip += 2;
12643                                 break;
12644                         }
12645                         case CEE_READONLY_:
12646                                 readonly = TRUE;
12647                                 ip += 2;
12648                                 break;
12649
12650                         case CEE_UNUSED56:
12651                         case CEE_UNUSED57:
12652                         case CEE_UNUSED70:
12653                         case CEE_UNUSED:
12654                         case CEE_UNUSED99:
12655                                 UNVERIFIED;
12656
12657                         default:
12658                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12659                                 UNVERIFIED;
12660                         }
12661                         break;
12662                 }
12663                 case CEE_UNUSED58:
12664                 case CEE_UNUSED1:
12665                         UNVERIFIED;
12666
12667                 default:
12668                         g_warning ("opcode 0x%02x not handled", *ip);
12669                         UNVERIFIED;
12670                 }
12671         }
12672         if (start_new_bblock != 1)
12673                 UNVERIFIED;
12674
12675         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12676         if (cfg->cbb->next_bb) {
12677                 /* This could already be set because of inlining, #693905 */
12678                 MonoBasicBlock *bb = cfg->cbb;
12679
12680                 while (bb->next_bb)
12681                         bb = bb->next_bb;
12682                 bb->next_bb = end_bblock;
12683         } else {
12684                 cfg->cbb->next_bb = end_bblock;
12685         }
12686
12687         if (cfg->method == method && cfg->domainvar) {
12688                 MonoInst *store;
12689                 MonoInst *get_domain;
12690
12691                 cfg->cbb = init_localsbb;
12692
12693                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12694                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12695                 MONO_ADD_INS (cfg->cbb, store);
12696         }
12697
12698 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12699         if (cfg->compile_aot)
12700                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12701                 mono_get_got_var (cfg);
12702 #endif
12703
12704         if (cfg->method == method && cfg->got_var)
12705                 mono_emit_load_got_addr (cfg);
12706
12707         if (init_localsbb) {
12708                 cfg->cbb = init_localsbb;
12709                 cfg->ip = NULL;
12710                 for (i = 0; i < header->num_locals; ++i) {
12711                         emit_init_local (cfg, i, header->locals [i], init_locals);
12712                 }
12713         }
12714
12715         if (cfg->init_ref_vars && cfg->method == method) {
12716                 /* Emit initialization for ref vars */
12717                 // FIXME: Avoid duplication initialization for IL locals.
12718                 for (i = 0; i < cfg->num_varinfo; ++i) {
12719                         MonoInst *ins = cfg->varinfo [i];
12720
12721                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12722                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12723                 }
12724         }
12725
12726         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12727                 cfg->cbb = init_localsbb;
12728                 emit_push_lmf (cfg);
12729         }
12730
12731         cfg->cbb = init_localsbb;
12732         mini_profiler_emit_enter (cfg);
12733
12734         if (seq_points) {
12735                 MonoBasicBlock *bb;
12736
12737                 /*
12738                  * Make seq points at backward branch targets interruptable.
12739                  */
12740                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12741                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12742                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12743         }
12744
12745         /* Add a sequence point for method entry/exit events */
12746         if (seq_points && cfg->gen_sdb_seq_points) {
12747                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12748                 MONO_ADD_INS (init_localsbb, ins);
12749                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12750                 MONO_ADD_INS (cfg->bb_exit, ins);
12751         }
12752
12753         /*
12754          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12755          * the code they refer to was dead (#11880).
12756          */
12757         if (sym_seq_points) {
12758                 for (i = 0; i < header->code_size; ++i) {
12759                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12760                                 MonoInst *ins;
12761
12762                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12763                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12764                         }
12765                 }
12766         }
12767
12768         cfg->ip = NULL;
12769
12770         if (cfg->method == method) {
12771                 MonoBasicBlock *bb;
12772                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12773                         if (bb == cfg->bb_init)
12774                                 bb->region = -1;
12775                         else
12776                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12777                         if (cfg->spvars)
12778                                 mono_create_spvar_for_region (cfg, bb->region);
12779                         if (cfg->verbose_level > 2)
12780                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12781                 }
12782         } else {
12783                 MonoBasicBlock *bb;
12784                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12785                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12786                         bb->real_offset = inline_offset;
12787                 }
12788         }
12789
12790         if (inline_costs < 0) {
12791                 char *mname;
12792
12793                 /* Method is too large */
12794                 mname = mono_method_full_name (method, TRUE);
12795                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12796                 g_free (mname);
12797         }
12798
12799         if ((cfg->verbose_level > 2) && (cfg->method == method))
12800                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12801
12802         goto cleanup;
12803
12804 mono_error_exit:
12805         g_assert (!mono_error_ok (&cfg->error));
12806         goto cleanup;
12807
12808  exception_exit:
12809         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12810         goto cleanup;
12811
12812  unverified:
12813         set_exception_type_from_invalid_il (cfg, method, ip);
12814         goto cleanup;
12815
12816  cleanup:
12817         g_slist_free (class_inits);
12818         mono_basic_block_free (original_bb);
12819         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12820         if (cfg->exception_type)
12821                 return -1;
12822         else
12823                 return inline_costs;
12824 }
12825
12826 static int
12827 store_membase_reg_to_store_membase_imm (int opcode)
12828 {
12829         switch (opcode) {
12830         case OP_STORE_MEMBASE_REG:
12831                 return OP_STORE_MEMBASE_IMM;
12832         case OP_STOREI1_MEMBASE_REG:
12833                 return OP_STOREI1_MEMBASE_IMM;
12834         case OP_STOREI2_MEMBASE_REG:
12835                 return OP_STOREI2_MEMBASE_IMM;
12836         case OP_STOREI4_MEMBASE_REG:
12837                 return OP_STOREI4_MEMBASE_IMM;
12838         case OP_STOREI8_MEMBASE_REG:
12839                 return OP_STOREI8_MEMBASE_IMM;
12840         default:
12841                 g_assert_not_reached ();
12842         }
12843
12844         return -1;
12845 }
12846
12847 int
12848 mono_op_to_op_imm (int opcode)
12849 {
12850         switch (opcode) {
12851         case OP_IADD:
12852                 return OP_IADD_IMM;
12853         case OP_ISUB:
12854                 return OP_ISUB_IMM;
12855         case OP_IDIV:
12856                 return OP_IDIV_IMM;
12857         case OP_IDIV_UN:
12858                 return OP_IDIV_UN_IMM;
12859         case OP_IREM:
12860                 return OP_IREM_IMM;
12861         case OP_IREM_UN:
12862                 return OP_IREM_UN_IMM;
12863         case OP_IMUL:
12864                 return OP_IMUL_IMM;
12865         case OP_IAND:
12866                 return OP_IAND_IMM;
12867         case OP_IOR:
12868                 return OP_IOR_IMM;
12869         case OP_IXOR:
12870                 return OP_IXOR_IMM;
12871         case OP_ISHL:
12872                 return OP_ISHL_IMM;
12873         case OP_ISHR:
12874                 return OP_ISHR_IMM;
12875         case OP_ISHR_UN:
12876                 return OP_ISHR_UN_IMM;
12877
12878         case OP_LADD:
12879                 return OP_LADD_IMM;
12880         case OP_LSUB:
12881                 return OP_LSUB_IMM;
12882         case OP_LAND:
12883                 return OP_LAND_IMM;
12884         case OP_LOR:
12885                 return OP_LOR_IMM;
12886         case OP_LXOR:
12887                 return OP_LXOR_IMM;
12888         case OP_LSHL:
12889                 return OP_LSHL_IMM;
12890         case OP_LSHR:
12891                 return OP_LSHR_IMM;
12892         case OP_LSHR_UN:
12893                 return OP_LSHR_UN_IMM;
12894 #if SIZEOF_REGISTER == 8
12895         case OP_LREM:
12896                 return OP_LREM_IMM;
12897 #endif
12898
12899         case OP_COMPARE:
12900                 return OP_COMPARE_IMM;
12901         case OP_ICOMPARE:
12902                 return OP_ICOMPARE_IMM;
12903         case OP_LCOMPARE:
12904                 return OP_LCOMPARE_IMM;
12905
12906         case OP_STORE_MEMBASE_REG:
12907                 return OP_STORE_MEMBASE_IMM;
12908         case OP_STOREI1_MEMBASE_REG:
12909                 return OP_STOREI1_MEMBASE_IMM;
12910         case OP_STOREI2_MEMBASE_REG:
12911                 return OP_STOREI2_MEMBASE_IMM;
12912         case OP_STOREI4_MEMBASE_REG:
12913                 return OP_STOREI4_MEMBASE_IMM;
12914
12915 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12916         case OP_X86_PUSH:
12917                 return OP_X86_PUSH_IMM;
12918         case OP_X86_COMPARE_MEMBASE_REG:
12919                 return OP_X86_COMPARE_MEMBASE_IMM;
12920 #endif
12921 #if defined(TARGET_AMD64)
12922         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12923                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12924 #endif
12925         case OP_VOIDCALL_REG:
12926                 return OP_VOIDCALL;
12927         case OP_CALL_REG:
12928                 return OP_CALL;
12929         case OP_LCALL_REG:
12930                 return OP_LCALL;
12931         case OP_FCALL_REG:
12932                 return OP_FCALL;
12933         case OP_LOCALLOC:
12934                 return OP_LOCALLOC_IMM;
12935         }
12936
12937         return -1;
12938 }
12939
12940 static int
12941 ldind_to_load_membase (int opcode)
12942 {
12943         switch (opcode) {
12944         case CEE_LDIND_I1:
12945                 return OP_LOADI1_MEMBASE;
12946         case CEE_LDIND_U1:
12947                 return OP_LOADU1_MEMBASE;
12948         case CEE_LDIND_I2:
12949                 return OP_LOADI2_MEMBASE;
12950         case CEE_LDIND_U2:
12951                 return OP_LOADU2_MEMBASE;
12952         case CEE_LDIND_I4:
12953                 return OP_LOADI4_MEMBASE;
12954         case CEE_LDIND_U4:
12955                 return OP_LOADU4_MEMBASE;
12956         case CEE_LDIND_I:
12957                 return OP_LOAD_MEMBASE;
12958         case CEE_LDIND_REF:
12959                 return OP_LOAD_MEMBASE;
12960         case CEE_LDIND_I8:
12961                 return OP_LOADI8_MEMBASE;
12962         case CEE_LDIND_R4:
12963                 return OP_LOADR4_MEMBASE;
12964         case CEE_LDIND_R8:
12965                 return OP_LOADR8_MEMBASE;
12966         default:
12967                 g_assert_not_reached ();
12968         }
12969
12970         return -1;
12971 }
12972
12973 static int
12974 stind_to_store_membase (int opcode)
12975 {
12976         switch (opcode) {
12977         case CEE_STIND_I1:
12978                 return OP_STOREI1_MEMBASE_REG;
12979         case CEE_STIND_I2:
12980                 return OP_STOREI2_MEMBASE_REG;
12981         case CEE_STIND_I4:
12982                 return OP_STOREI4_MEMBASE_REG;
12983         case CEE_STIND_I:
12984         case CEE_STIND_REF:
12985                 return OP_STORE_MEMBASE_REG;
12986         case CEE_STIND_I8:
12987                 return OP_STOREI8_MEMBASE_REG;
12988         case CEE_STIND_R4:
12989                 return OP_STORER4_MEMBASE_REG;
12990         case CEE_STIND_R8:
12991                 return OP_STORER8_MEMBASE_REG;
12992         default:
12993                 g_assert_not_reached ();
12994         }
12995
12996         return -1;
12997 }
12998
12999 int
13000 mono_load_membase_to_load_mem (int opcode)
13001 {
13002         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13003 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13004         switch (opcode) {
13005         case OP_LOAD_MEMBASE:
13006                 return OP_LOAD_MEM;
13007         case OP_LOADU1_MEMBASE:
13008                 return OP_LOADU1_MEM;
13009         case OP_LOADU2_MEMBASE:
13010                 return OP_LOADU2_MEM;
13011         case OP_LOADI4_MEMBASE:
13012                 return OP_LOADI4_MEM;
13013         case OP_LOADU4_MEMBASE:
13014                 return OP_LOADU4_MEM;
13015 #if SIZEOF_REGISTER == 8
13016         case OP_LOADI8_MEMBASE:
13017                 return OP_LOADI8_MEM;
13018 #endif
13019         }
13020 #endif
13021
13022         return -1;
13023 }
13024
13025 static inline int
13026 op_to_op_dest_membase (int store_opcode, int opcode)
13027 {
13028 #if defined(TARGET_X86)
13029         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13030                 return -1;
13031
13032         switch (opcode) {
13033         case OP_IADD:
13034                 return OP_X86_ADD_MEMBASE_REG;
13035         case OP_ISUB:
13036                 return OP_X86_SUB_MEMBASE_REG;
13037         case OP_IAND:
13038                 return OP_X86_AND_MEMBASE_REG;
13039         case OP_IOR:
13040                 return OP_X86_OR_MEMBASE_REG;
13041         case OP_IXOR:
13042                 return OP_X86_XOR_MEMBASE_REG;
13043         case OP_ADD_IMM:
13044         case OP_IADD_IMM:
13045                 return OP_X86_ADD_MEMBASE_IMM;
13046         case OP_SUB_IMM:
13047         case OP_ISUB_IMM:
13048                 return OP_X86_SUB_MEMBASE_IMM;
13049         case OP_AND_IMM:
13050         case OP_IAND_IMM:
13051                 return OP_X86_AND_MEMBASE_IMM;
13052         case OP_OR_IMM:
13053         case OP_IOR_IMM:
13054                 return OP_X86_OR_MEMBASE_IMM;
13055         case OP_XOR_IMM:
13056         case OP_IXOR_IMM:
13057                 return OP_X86_XOR_MEMBASE_IMM;
13058         case OP_MOVE:
13059                 return OP_NOP;
13060         }
13061 #endif
13062
13063 #if defined(TARGET_AMD64)
13064         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13065                 return -1;
13066
13067         switch (opcode) {
13068         case OP_IADD:
13069                 return OP_X86_ADD_MEMBASE_REG;
13070         case OP_ISUB:
13071                 return OP_X86_SUB_MEMBASE_REG;
13072         case OP_IAND:
13073                 return OP_X86_AND_MEMBASE_REG;
13074         case OP_IOR:
13075                 return OP_X86_OR_MEMBASE_REG;
13076         case OP_IXOR:
13077                 return OP_X86_XOR_MEMBASE_REG;
13078         case OP_IADD_IMM:
13079                 return OP_X86_ADD_MEMBASE_IMM;
13080         case OP_ISUB_IMM:
13081                 return OP_X86_SUB_MEMBASE_IMM;
13082         case OP_IAND_IMM:
13083                 return OP_X86_AND_MEMBASE_IMM;
13084         case OP_IOR_IMM:
13085                 return OP_X86_OR_MEMBASE_IMM;
13086         case OP_IXOR_IMM:
13087                 return OP_X86_XOR_MEMBASE_IMM;
13088         case OP_LADD:
13089                 return OP_AMD64_ADD_MEMBASE_REG;
13090         case OP_LSUB:
13091                 return OP_AMD64_SUB_MEMBASE_REG;
13092         case OP_LAND:
13093                 return OP_AMD64_AND_MEMBASE_REG;
13094         case OP_LOR:
13095                 return OP_AMD64_OR_MEMBASE_REG;
13096         case OP_LXOR:
13097                 return OP_AMD64_XOR_MEMBASE_REG;
13098         case OP_ADD_IMM:
13099         case OP_LADD_IMM:
13100                 return OP_AMD64_ADD_MEMBASE_IMM;
13101         case OP_SUB_IMM:
13102         case OP_LSUB_IMM:
13103                 return OP_AMD64_SUB_MEMBASE_IMM;
13104         case OP_AND_IMM:
13105         case OP_LAND_IMM:
13106                 return OP_AMD64_AND_MEMBASE_IMM;
13107         case OP_OR_IMM:
13108         case OP_LOR_IMM:
13109                 return OP_AMD64_OR_MEMBASE_IMM;
13110         case OP_XOR_IMM:
13111         case OP_LXOR_IMM:
13112                 return OP_AMD64_XOR_MEMBASE_IMM;
13113         case OP_MOVE:
13114                 return OP_NOP;
13115         }
13116 #endif
13117
13118         return -1;
13119 }
13120
13121 static inline int
13122 op_to_op_store_membase (int store_opcode, int opcode)
13123 {
13124 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13125         switch (opcode) {
13126         case OP_ICEQ:
13127                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13128                         return OP_X86_SETEQ_MEMBASE;
13129         case OP_CNE:
13130                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13131                         return OP_X86_SETNE_MEMBASE;
13132         }
13133 #endif
13134
13135         return -1;
13136 }
13137
13138 static inline int
13139 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13140 {
13141 #ifdef TARGET_X86
13142         /* FIXME: This has sign extension issues */
13143         /*
13144         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13145                 return OP_X86_COMPARE_MEMBASE8_IMM;
13146         */
13147
13148         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13149                 return -1;
13150
13151         switch (opcode) {
13152         case OP_X86_PUSH:
13153                 return OP_X86_PUSH_MEMBASE;
13154         case OP_COMPARE_IMM:
13155         case OP_ICOMPARE_IMM:
13156                 return OP_X86_COMPARE_MEMBASE_IMM;
13157         case OP_COMPARE:
13158         case OP_ICOMPARE:
13159                 return OP_X86_COMPARE_MEMBASE_REG;
13160         }
13161 #endif
13162
13163 #ifdef TARGET_AMD64
13164         /* FIXME: This has sign extension issues */
13165         /*
13166         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13167                 return OP_X86_COMPARE_MEMBASE8_IMM;
13168         */
13169
13170         switch (opcode) {
13171         case OP_X86_PUSH:
13172                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13173                         return OP_X86_PUSH_MEMBASE;
13174                 break;
13175                 /* FIXME: This only works for 32 bit immediates
13176         case OP_COMPARE_IMM:
13177         case OP_LCOMPARE_IMM:
13178                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13179                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13180                 */
13181         case OP_ICOMPARE_IMM:
13182                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13183                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13184                 break;
13185         case OP_COMPARE:
13186         case OP_LCOMPARE:
13187                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13188                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13189                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13190                         return OP_AMD64_COMPARE_MEMBASE_REG;
13191                 break;
13192         case OP_ICOMPARE:
13193                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13194                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13195                 break;
13196         }
13197 #endif
13198
13199         return -1;
13200 }
13201
13202 static inline int
13203 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13204 {
13205 #ifdef TARGET_X86
13206         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13207                 return -1;
13208
13209         switch (opcode) {
13210         case OP_COMPARE:
13211         case OP_ICOMPARE:
13212                 return OP_X86_COMPARE_REG_MEMBASE;
13213         case OP_IADD:
13214                 return OP_X86_ADD_REG_MEMBASE;
13215         case OP_ISUB:
13216                 return OP_X86_SUB_REG_MEMBASE;
13217         case OP_IAND:
13218                 return OP_X86_AND_REG_MEMBASE;
13219         case OP_IOR:
13220                 return OP_X86_OR_REG_MEMBASE;
13221         case OP_IXOR:
13222                 return OP_X86_XOR_REG_MEMBASE;
13223         }
13224 #endif
13225
13226 #ifdef TARGET_AMD64
13227         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13228                 switch (opcode) {
13229                 case OP_ICOMPARE:
13230                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13231                 case OP_IADD:
13232                         return OP_X86_ADD_REG_MEMBASE;
13233                 case OP_ISUB:
13234                         return OP_X86_SUB_REG_MEMBASE;
13235                 case OP_IAND:
13236                         return OP_X86_AND_REG_MEMBASE;
13237                 case OP_IOR:
13238                         return OP_X86_OR_REG_MEMBASE;
13239                 case OP_IXOR:
13240                         return OP_X86_XOR_REG_MEMBASE;
13241                 }
13242         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13243                 switch (opcode) {
13244                 case OP_COMPARE:
13245                 case OP_LCOMPARE:
13246                         return OP_AMD64_COMPARE_REG_MEMBASE;
13247                 case OP_LADD:
13248                         return OP_AMD64_ADD_REG_MEMBASE;
13249                 case OP_LSUB:
13250                         return OP_AMD64_SUB_REG_MEMBASE;
13251                 case OP_LAND:
13252                         return OP_AMD64_AND_REG_MEMBASE;
13253                 case OP_LOR:
13254                         return OP_AMD64_OR_REG_MEMBASE;
13255                 case OP_LXOR:
13256                         return OP_AMD64_XOR_REG_MEMBASE;
13257                 }
13258         }
13259 #endif
13260
13261         return -1;
13262 }
13263
13264 int
13265 mono_op_to_op_imm_noemul (int opcode)
13266 {
13267         switch (opcode) {
13268 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13269         case OP_LSHR:
13270         case OP_LSHL:
13271         case OP_LSHR_UN:
13272                 return -1;
13273 #endif
13274 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13275         case OP_IDIV:
13276         case OP_IDIV_UN:
13277         case OP_IREM:
13278         case OP_IREM_UN:
13279                 return -1;
13280 #endif
13281 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13282         case OP_IMUL:
13283                 return -1;
13284 #endif
13285         default:
13286                 return mono_op_to_op_imm (opcode);
13287         }
13288 }
13289
13290 /**
13291  * mono_handle_global_vregs:
13292  *
13293  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13294  * for them.
13295  */
13296 void
13297 mono_handle_global_vregs (MonoCompile *cfg)
13298 {
13299         gint32 *vreg_to_bb;
13300         MonoBasicBlock *bb;
13301         int i, pos;
13302
13303         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13304
13305 #ifdef MONO_ARCH_SIMD_INTRINSICS
13306         if (cfg->uses_simd_intrinsics)
13307                 mono_simd_simplify_indirection (cfg);
13308 #endif
13309
13310         /* Find local vregs used in more than one bb */
13311         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13312                 MonoInst *ins = bb->code;
13313                 int block_num = bb->block_num;
13314
13315                 if (cfg->verbose_level > 2)
13316                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13317
13318                 cfg->cbb = bb;
13319                 for (; ins; ins = ins->next) {
13320                         const char *spec = INS_INFO (ins->opcode);
13321                         int regtype = 0, regindex;
13322                         gint32 prev_bb;
13323
13324                         if (G_UNLIKELY (cfg->verbose_level > 2))
13325                                 mono_print_ins (ins);
13326
13327                         g_assert (ins->opcode >= MONO_CEE_LAST);
13328
13329                         for (regindex = 0; regindex < 4; regindex ++) {
13330                                 int vreg = 0;
13331
13332                                 if (regindex == 0) {
13333                                         regtype = spec [MONO_INST_DEST];
13334                                         if (regtype == ' ')
13335                                                 continue;
13336                                         vreg = ins->dreg;
13337                                 } else if (regindex == 1) {
13338                                         regtype = spec [MONO_INST_SRC1];
13339                                         if (regtype == ' ')
13340                                                 continue;
13341                                         vreg = ins->sreg1;
13342                                 } else if (regindex == 2) {
13343                                         regtype = spec [MONO_INST_SRC2];
13344                                         if (regtype == ' ')
13345                                                 continue;
13346                                         vreg = ins->sreg2;
13347                                 } else if (regindex == 3) {
13348                                         regtype = spec [MONO_INST_SRC3];
13349                                         if (regtype == ' ')
13350                                                 continue;
13351                                         vreg = ins->sreg3;
13352                                 }
13353
13354 #if SIZEOF_REGISTER == 4
13355                                 /* In the LLVM case, the long opcodes are not decomposed */
13356                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13357                                         /*
13358                                          * Since some instructions reference the original long vreg,
13359                                          * and some reference the two component vregs, it is quite hard
13360                                          * to determine when it needs to be global. So be conservative.
13361                                          */
13362                                         if (!get_vreg_to_inst (cfg, vreg)) {
13363                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13364
13365                                                 if (cfg->verbose_level > 2)
13366                                                         printf ("LONG VREG R%d made global.\n", vreg);
13367                                         }
13368
13369                                         /*
13370                                          * Make the component vregs volatile since the optimizations can
13371                                          * get confused otherwise.
13372                                          */
13373                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13374                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13375                                 }
13376 #endif
13377
13378                                 g_assert (vreg != -1);
13379
13380                                 prev_bb = vreg_to_bb [vreg];
13381                                 if (prev_bb == 0) {
13382                                         /* 0 is a valid block num */
13383                                         vreg_to_bb [vreg] = block_num + 1;
13384                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13385                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13386                                                 continue;
13387
13388                                         if (!get_vreg_to_inst (cfg, vreg)) {
13389                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13390                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13391
13392                                                 switch (regtype) {
13393                                                 case 'i':
13394                                                         if (vreg_is_ref (cfg, vreg))
13395                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13396                                                         else
13397                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13398                                                         break;
13399                                                 case 'l':
13400                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13401                                                         break;
13402                                                 case 'f':
13403                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13404                                                         break;
13405                                                 case 'v':
13406                                                 case 'x':
13407                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13408                                                         break;
13409                                                 default:
13410                                                         g_assert_not_reached ();
13411                                                 }
13412                                         }
13413
13414                                         /* Flag as having been used in more than one bb */
13415                                         vreg_to_bb [vreg] = -1;
13416                                 }
13417                         }
13418                 }
13419         }
13420
13421         /* If a variable is used in only one bblock, convert it into a local vreg */
13422         for (i = 0; i < cfg->num_varinfo; i++) {
13423                 MonoInst *var = cfg->varinfo [i];
13424                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13425
13426                 switch (var->type) {
13427                 case STACK_I4:
13428                 case STACK_OBJ:
13429                 case STACK_PTR:
13430                 case STACK_MP:
13431                 case STACK_VTYPE:
13432 #if SIZEOF_REGISTER == 8
13433                 case STACK_I8:
13434 #endif
13435 #if !defined(TARGET_X86)
13436                 /* Enabling this screws up the fp stack on x86 */
13437                 case STACK_R8:
13438 #endif
13439                         if (mono_arch_is_soft_float ())
13440                                 break;
13441
13442                         /*
13443                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13444                                 break;
13445                         */
13446
13447                         /* Arguments are implicitly global */
13448                         /* Putting R4 vars into registers doesn't work currently */
13449                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13450                         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) {
13451                                 /*
13452                                  * Make that the variable's liveness interval doesn't contain a call, since
13453                                  * that would cause the lvreg to be spilled, making the whole optimization
13454                                  * useless.
13455                                  */
13456                                 /* This is too slow for JIT compilation */
13457 #if 0
13458                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13459                                         MonoInst *ins;
13460                                         int def_index, call_index, ins_index;
13461                                         gboolean spilled = FALSE;
13462
13463                                         def_index = -1;
13464                                         call_index = -1;
13465                                         ins_index = 0;
13466                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13467                                                 const char *spec = INS_INFO (ins->opcode);
13468
13469                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13470                                                         def_index = ins_index;
13471
13472                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13473                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13474                                                         if (call_index > def_index) {
13475                                                                 spilled = TRUE;
13476                                                                 break;
13477                                                         }
13478                                                 }
13479
13480                                                 if (MONO_IS_CALL (ins))
13481                                                         call_index = ins_index;
13482
13483                                                 ins_index ++;
13484                                         }
13485
13486                                         if (spilled)
13487                                                 break;
13488                                 }
13489 #endif
13490
13491                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13492                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13493                                 var->flags |= MONO_INST_IS_DEAD;
13494                                 cfg->vreg_to_inst [var->dreg] = NULL;
13495                         }
13496                         break;
13497                 }
13498         }
13499
13500         /*
13501          * Compress the varinfo and vars tables so the liveness computation is faster and
13502          * takes up less space.
13503          */
13504         pos = 0;
13505         for (i = 0; i < cfg->num_varinfo; ++i) {
13506                 MonoInst *var = cfg->varinfo [i];
13507                 if (pos < i && cfg->locals_start == i)
13508                         cfg->locals_start = pos;
13509                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13510                         if (pos < i) {
13511                                 cfg->varinfo [pos] = cfg->varinfo [i];
13512                                 cfg->varinfo [pos]->inst_c0 = pos;
13513                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13514                                 cfg->vars [pos].idx = pos;
13515 #if SIZEOF_REGISTER == 4
13516                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13517                                         /* Modify the two component vars too */
13518                                         MonoInst *var1;
13519
13520                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13521                                         var1->inst_c0 = pos;
13522                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13523                                         var1->inst_c0 = pos;
13524                                 }
13525 #endif
13526                         }
13527                         pos ++;
13528                 }
13529         }
13530         cfg->num_varinfo = pos;
13531         if (cfg->locals_start > cfg->num_varinfo)
13532                 cfg->locals_start = cfg->num_varinfo;
13533 }
13534
13535 /*
13536  * mono_allocate_gsharedvt_vars:
13537  *
13538  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13539  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13540  */
13541 void
13542 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13543 {
13544         int i;
13545
13546         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13547
13548         for (i = 0; i < cfg->num_varinfo; ++i) {
13549                 MonoInst *ins = cfg->varinfo [i];
13550                 int idx;
13551
13552                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13553                         if (i >= cfg->locals_start) {
13554                                 /* Local */
13555                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13556                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13557                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13558                                 ins->inst_imm = idx;
13559                         } else {
13560                                 /* Arg */
13561                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13562                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13563                         }
13564                 }
13565         }
13566 }
13567
13568 /**
13569  * mono_spill_global_vars:
13570  *
13571  *   Generate spill code for variables which are not allocated to registers,
13572  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13573  * code is generated which could be optimized by the local optimization passes.
13574  */
13575 void
13576 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13577 {
13578         MonoBasicBlock *bb;
13579         char spec2 [16];
13580         int orig_next_vreg;
13581         guint32 *vreg_to_lvreg;
13582         guint32 *lvregs;
13583         guint32 i, lvregs_len, lvregs_size;
13584         gboolean dest_has_lvreg = FALSE;
13585         MonoStackType stacktypes [128];
13586         MonoInst **live_range_start, **live_range_end;
13587         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13588
13589         *need_local_opts = FALSE;
13590
13591         memset (spec2, 0, sizeof (spec2));
13592
13593         /* FIXME: Move this function to mini.c */
13594         stacktypes ['i'] = STACK_PTR;
13595         stacktypes ['l'] = STACK_I8;
13596         stacktypes ['f'] = STACK_R8;
13597 #ifdef MONO_ARCH_SIMD_INTRINSICS
13598         stacktypes ['x'] = STACK_VTYPE;
13599 #endif
13600
13601 #if SIZEOF_REGISTER == 4
13602         /* Create MonoInsts for longs */
13603         for (i = 0; i < cfg->num_varinfo; i++) {
13604                 MonoInst *ins = cfg->varinfo [i];
13605
13606                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13607                         switch (ins->type) {
13608                         case STACK_R8:
13609                         case STACK_I8: {
13610                                 MonoInst *tree;
13611
13612                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13613                                         break;
13614
13615                                 g_assert (ins->opcode == OP_REGOFFSET);
13616
13617                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13618                                 g_assert (tree);
13619                                 tree->opcode = OP_REGOFFSET;
13620                                 tree->inst_basereg = ins->inst_basereg;
13621                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13622
13623                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13624                                 g_assert (tree);
13625                                 tree->opcode = OP_REGOFFSET;
13626                                 tree->inst_basereg = ins->inst_basereg;
13627                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13628                                 break;
13629                         }
13630                         default:
13631                                 break;
13632                         }
13633                 }
13634         }
13635 #endif
13636
13637         if (cfg->compute_gc_maps) {
13638                 /* registers need liveness info even for !non refs */
13639                 for (i = 0; i < cfg->num_varinfo; i++) {
13640                         MonoInst *ins = cfg->varinfo [i];
13641
13642                         if (ins->opcode == OP_REGVAR)
13643                                 ins->flags |= MONO_INST_GC_TRACK;
13644                 }
13645         }
13646
13647         /* FIXME: widening and truncation */
13648
13649         /*
13650          * As an optimization, when a variable allocated to the stack is first loaded into
13651          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13652          * the variable again.
13653          */
13654         orig_next_vreg = cfg->next_vreg;
13655         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13656         lvregs_size = 1024;
13657         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13658         lvregs_len = 0;
13659
13660         /*
13661          * These arrays contain the first and last instructions accessing a given
13662          * variable.
13663          * Since we emit bblocks in the same order we process them here, and we
13664          * don't split live ranges, these will precisely describe the live range of
13665          * the variable, i.e. the instruction range where a valid value can be found
13666          * in the variables location.
13667          * The live range is computed using the liveness info computed by the liveness pass.
13668          * We can't use vmv->range, since that is an abstract live range, and we need
13669          * one which is instruction precise.
13670          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13671          */
13672         /* FIXME: Only do this if debugging info is requested */
13673         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13674         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13675         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13676         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13677
13678         /* Add spill loads/stores */
13679         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13680                 MonoInst *ins;
13681
13682                 if (cfg->verbose_level > 2)
13683                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13684
13685                 /* Clear vreg_to_lvreg array */
13686                 for (i = 0; i < lvregs_len; i++)
13687                         vreg_to_lvreg [lvregs [i]] = 0;
13688                 lvregs_len = 0;
13689
13690                 cfg->cbb = bb;
13691                 MONO_BB_FOR_EACH_INS (bb, ins) {
13692                         const char *spec = INS_INFO (ins->opcode);
13693                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13694                         gboolean store, no_lvreg;
13695                         int sregs [MONO_MAX_SRC_REGS];
13696
13697                         if (G_UNLIKELY (cfg->verbose_level > 2))
13698                                 mono_print_ins (ins);
13699
13700                         if (ins->opcode == OP_NOP)
13701                                 continue;
13702
13703                         /*
13704                          * We handle LDADDR here as well, since it can only be decomposed
13705                          * when variable addresses are known.
13706                          */
13707                         if (ins->opcode == OP_LDADDR) {
13708                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13709
13710                                 if (var->opcode == OP_VTARG_ADDR) {
13711                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13712                                         MonoInst *vtaddr = var->inst_left;
13713                                         if (vtaddr->opcode == OP_REGVAR) {
13714                                                 ins->opcode = OP_MOVE;
13715                                                 ins->sreg1 = vtaddr->dreg;
13716                                         }
13717                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13718                                                 ins->opcode = OP_LOAD_MEMBASE;
13719                                                 ins->inst_basereg = vtaddr->inst_basereg;
13720                                                 ins->inst_offset = vtaddr->inst_offset;
13721                                         } else
13722                                                 NOT_IMPLEMENTED;
13723                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13724                                         /* gsharedvt arg passed by ref */
13725                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13726
13727                                         ins->opcode = OP_LOAD_MEMBASE;
13728                                         ins->inst_basereg = var->inst_basereg;
13729                                         ins->inst_offset = var->inst_offset;
13730                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13731                                         MonoInst *load, *load2, *load3;
13732                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13733                                         int reg1, reg2, reg3;
13734                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13735                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13736
13737                                         /*
13738                                          * gsharedvt local.
13739                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13740                                          */
13741
13742                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13743
13744                                         g_assert (info_var);
13745                                         g_assert (locals_var);
13746
13747                                         /* Mark the instruction used to compute the locals var as used */
13748                                         cfg->gsharedvt_locals_var_ins = NULL;
13749
13750                                         /* Load the offset */
13751                                         if (info_var->opcode == OP_REGOFFSET) {
13752                                                 reg1 = alloc_ireg (cfg);
13753                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13754                                         } else if (info_var->opcode == OP_REGVAR) {
13755                                                 load = NULL;
13756                                                 reg1 = info_var->dreg;
13757                                         } else {
13758                                                 g_assert_not_reached ();
13759                                         }
13760                                         reg2 = alloc_ireg (cfg);
13761                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13762                                         /* Load the locals area address */
13763                                         reg3 = alloc_ireg (cfg);
13764                                         if (locals_var->opcode == OP_REGOFFSET) {
13765                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13766                                         } else if (locals_var->opcode == OP_REGVAR) {
13767                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13768                                         } else {
13769                                                 g_assert_not_reached ();
13770                                         }
13771                                         /* Compute the address */
13772                                         ins->opcode = OP_PADD;
13773                                         ins->sreg1 = reg3;
13774                                         ins->sreg2 = reg2;
13775
13776                                         mono_bblock_insert_before_ins (bb, ins, load3);
13777                                         mono_bblock_insert_before_ins (bb, load3, load2);
13778                                         if (load)
13779                                                 mono_bblock_insert_before_ins (bb, load2, load);
13780                                 } else {
13781                                         g_assert (var->opcode == OP_REGOFFSET);
13782
13783                                         ins->opcode = OP_ADD_IMM;
13784                                         ins->sreg1 = var->inst_basereg;
13785                                         ins->inst_imm = var->inst_offset;
13786                                 }
13787
13788                                 *need_local_opts = TRUE;
13789                                 spec = INS_INFO (ins->opcode);
13790                         }
13791
13792                         if (ins->opcode < MONO_CEE_LAST) {
13793                                 mono_print_ins (ins);
13794                                 g_assert_not_reached ();
13795                         }
13796
13797                         /*
13798                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13799                          * src register.
13800                          * FIXME:
13801                          */
13802                         if (MONO_IS_STORE_MEMBASE (ins)) {
13803                                 tmp_reg = ins->dreg;
13804                                 ins->dreg = ins->sreg2;
13805                                 ins->sreg2 = tmp_reg;
13806                                 store = TRUE;
13807
13808                                 spec2 [MONO_INST_DEST] = ' ';
13809                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13810                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13811                                 spec2 [MONO_INST_SRC3] = ' ';
13812                                 spec = spec2;
13813                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13814                                 g_assert_not_reached ();
13815                         else
13816                                 store = FALSE;
13817                         no_lvreg = FALSE;
13818
13819                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13820                                 printf ("\t %.3s %d", spec, ins->dreg);
13821                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13822                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13823                                         printf (" %d", sregs [srcindex]);
13824                                 printf ("\n");
13825                         }
13826
13827                         /***************/
13828                         /*    DREG     */
13829                         /***************/
13830                         regtype = spec [MONO_INST_DEST];
13831                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13832                         prev_dreg = -1;
13833
13834                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13835                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13836                                 MonoInst *store_ins;
13837                                 int store_opcode;
13838                                 MonoInst *def_ins = ins;
13839                                 int dreg = ins->dreg; /* The original vreg */
13840
13841                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13842
13843                                 if (var->opcode == OP_REGVAR) {
13844                                         ins->dreg = var->dreg;
13845                                 } 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)) {
13846                                         /*
13847                                          * Instead of emitting a load+store, use a _membase opcode.
13848                                          */
13849                                         g_assert (var->opcode == OP_REGOFFSET);
13850                                         if (ins->opcode == OP_MOVE) {
13851                                                 NULLIFY_INS (ins);
13852                                                 def_ins = NULL;
13853                                         } else {
13854                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13855                                                 ins->inst_basereg = var->inst_basereg;
13856                                                 ins->inst_offset = var->inst_offset;
13857                                                 ins->dreg = -1;
13858                                         }
13859                                         spec = INS_INFO (ins->opcode);
13860                                 } else {
13861                                         guint32 lvreg;
13862
13863                                         g_assert (var->opcode == OP_REGOFFSET);
13864
13865                                         prev_dreg = ins->dreg;
13866
13867                                         /* Invalidate any previous lvreg for this vreg */
13868                                         vreg_to_lvreg [ins->dreg] = 0;
13869
13870                                         lvreg = 0;
13871
13872                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13873                                                 regtype = 'l';
13874                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13875                                         }
13876
13877                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13878
13879 #if SIZEOF_REGISTER != 8
13880                                         if (regtype == 'l') {
13881                                                 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));
13882                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13883                                                 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));
13884                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13885                                                 def_ins = store_ins;
13886                                         }
13887                                         else
13888 #endif
13889                                         {
13890                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13891
13892                                                 /* Try to fuse the store into the instruction itself */
13893                                                 /* FIXME: Add more instructions */
13894                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13895                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13896                                                         ins->inst_imm = ins->inst_c0;
13897                                                         ins->inst_destbasereg = var->inst_basereg;
13898                                                         ins->inst_offset = var->inst_offset;
13899                                                         spec = INS_INFO (ins->opcode);
13900                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13901                                                         ins->opcode = store_opcode;
13902                                                         ins->inst_destbasereg = var->inst_basereg;
13903                                                         ins->inst_offset = var->inst_offset;
13904
13905                                                         no_lvreg = TRUE;
13906
13907                                                         tmp_reg = ins->dreg;
13908                                                         ins->dreg = ins->sreg2;
13909                                                         ins->sreg2 = tmp_reg;
13910                                                         store = TRUE;
13911
13912                                                         spec2 [MONO_INST_DEST] = ' ';
13913                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13914                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13915                                                         spec2 [MONO_INST_SRC3] = ' ';
13916                                                         spec = spec2;
13917                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13918                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13919                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13920                                                         ins->dreg = -1;
13921                                                         ins->inst_basereg = var->inst_basereg;
13922                                                         ins->inst_offset = var->inst_offset;
13923                                                         spec = INS_INFO (ins->opcode);
13924                                                 } else {
13925                                                         /* printf ("INS: "); mono_print_ins (ins); */
13926                                                         /* Create a store instruction */
13927                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13928
13929                                                         /* Insert it after the instruction */
13930                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13931
13932                                                         def_ins = store_ins;
13933
13934                                                         /*
13935                                                          * We can't assign ins->dreg to var->dreg here, since the
13936                                                          * sregs could use it. So set a flag, and do it after
13937                                                          * the sregs.
13938                                                          */
13939                                                         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)))
13940                                                                 dest_has_lvreg = TRUE;
13941                                                 }
13942                                         }
13943                                 }
13944
13945                                 if (def_ins && !live_range_start [dreg]) {
13946                                         live_range_start [dreg] = def_ins;
13947                                         live_range_start_bb [dreg] = bb;
13948                                 }
13949
13950                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13951                                         MonoInst *tmp;
13952
13953                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13954                                         tmp->inst_c1 = dreg;
13955                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13956                                 }
13957                         }
13958
13959                         /************/
13960                         /*  SREGS   */
13961                         /************/
13962                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13963                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13964                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13965                                 sreg = sregs [srcindex];
13966
13967                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13968                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13969                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13970                                         MonoInst *use_ins = ins;
13971                                         MonoInst *load_ins;
13972                                         guint32 load_opcode;
13973
13974                                         if (var->opcode == OP_REGVAR) {
13975                                                 sregs [srcindex] = var->dreg;
13976                                                 //mono_inst_set_src_registers (ins, sregs);
13977                                                 live_range_end [sreg] = use_ins;
13978                                                 live_range_end_bb [sreg] = bb;
13979
13980                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13981                                                         MonoInst *tmp;
13982
13983                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13984                                                         /* var->dreg is a hreg */
13985                                                         tmp->inst_c1 = sreg;
13986                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13987                                                 }
13988
13989                                                 continue;
13990                                         }
13991
13992                                         g_assert (var->opcode == OP_REGOFFSET);
13993
13994                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13995
13996                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13997
13998                                         if (vreg_to_lvreg [sreg]) {
13999                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14000
14001                                                 /* The variable is already loaded to an lvreg */
14002                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14003                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14004                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14005                                                 //mono_inst_set_src_registers (ins, sregs);
14006                                                 continue;
14007                                         }
14008
14009                                         /* Try to fuse the load into the instruction */
14010                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14011                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14012                                                 sregs [0] = var->inst_basereg;
14013                                                 //mono_inst_set_src_registers (ins, sregs);
14014                                                 ins->inst_offset = var->inst_offset;
14015                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14016                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14017                                                 sregs [1] = var->inst_basereg;
14018                                                 //mono_inst_set_src_registers (ins, sregs);
14019                                                 ins->inst_offset = var->inst_offset;
14020                                         } else {
14021                                                 if (MONO_IS_REAL_MOVE (ins)) {
14022                                                         ins->opcode = OP_NOP;
14023                                                         sreg = ins->dreg;
14024                                                 } else {
14025                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14026
14027                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14028
14029                                                         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) {
14030                                                                 if (var->dreg == prev_dreg) {
14031                                                                         /*
14032                                                                          * sreg refers to the value loaded by the load
14033                                                                          * emitted below, but we need to use ins->dreg
14034                                                                          * since it refers to the store emitted earlier.
14035                                                                          */
14036                                                                         sreg = ins->dreg;
14037                                                                 }
14038                                                                 g_assert (sreg != -1);
14039                                                                 vreg_to_lvreg [var->dreg] = sreg;
14040                                                                 if (lvregs_len >= lvregs_size) {
14041                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14042                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14043                                                                         lvregs = new_lvregs;
14044                                                                         lvregs_size *= 2;
14045                                                                 }
14046                                                                 lvregs [lvregs_len ++] = var->dreg;
14047                                                         }
14048                                                 }
14049
14050                                                 sregs [srcindex] = sreg;
14051                                                 //mono_inst_set_src_registers (ins, sregs);
14052
14053 #if SIZEOF_REGISTER != 8
14054                                                 if (regtype == 'l') {
14055                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14056                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14057                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14058                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14059                                                         use_ins = load_ins;
14060                                                 }
14061                                                 else
14062 #endif
14063                                                 {
14064 #if SIZEOF_REGISTER == 4
14065                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14066 #endif
14067                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14068                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14069                                                         use_ins = load_ins;
14070                                                 }
14071                                         }
14072
14073                                         if (var->dreg < orig_next_vreg) {
14074                                                 live_range_end [var->dreg] = use_ins;
14075                                                 live_range_end_bb [var->dreg] = bb;
14076                                         }
14077
14078                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14079                                                 MonoInst *tmp;
14080
14081                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14082                                                 tmp->inst_c1 = var->dreg;
14083                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14084                                         }
14085                                 }
14086                         }
14087                         mono_inst_set_src_registers (ins, sregs);
14088
14089                         if (dest_has_lvreg) {
14090                                 g_assert (ins->dreg != -1);
14091                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14092                                 if (lvregs_len >= lvregs_size) {
14093                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
14094                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
14095                                         lvregs = new_lvregs;
14096                                         lvregs_size *= 2;
14097                                 }
14098                                 lvregs [lvregs_len ++] = prev_dreg;
14099                                 dest_has_lvreg = FALSE;
14100                         }
14101
14102                         if (store) {
14103                                 tmp_reg = ins->dreg;
14104                                 ins->dreg = ins->sreg2;
14105                                 ins->sreg2 = tmp_reg;
14106                         }
14107
14108                         if (MONO_IS_CALL (ins)) {
14109                                 /* Clear vreg_to_lvreg array */
14110                                 for (i = 0; i < lvregs_len; i++)
14111                                         vreg_to_lvreg [lvregs [i]] = 0;
14112                                 lvregs_len = 0;
14113                         } else if (ins->opcode == OP_NOP) {
14114                                 ins->dreg = -1;
14115                                 MONO_INST_NULLIFY_SREGS (ins);
14116                         }
14117
14118                         if (cfg->verbose_level > 2)
14119                                 mono_print_ins_index (1, ins);
14120                 }
14121
14122                 /* Extend the live range based on the liveness info */
14123                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14124                         for (i = 0; i < cfg->num_varinfo; i ++) {
14125                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14126
14127                                 if (vreg_is_volatile (cfg, vi->vreg))
14128                                         /* The liveness info is incomplete */
14129                                         continue;
14130
14131                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14132                                         /* Live from at least the first ins of this bb */
14133                                         live_range_start [vi->vreg] = bb->code;
14134                                         live_range_start_bb [vi->vreg] = bb;
14135                                 }
14136
14137                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14138                                         /* Live at least until the last ins of this bb */
14139                                         live_range_end [vi->vreg] = bb->last_ins;
14140                                         live_range_end_bb [vi->vreg] = bb;
14141                                 }
14142                         }
14143                 }
14144         }
14145
14146         /*
14147          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14148          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14149          */
14150         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14151                 for (i = 0; i < cfg->num_varinfo; ++i) {
14152                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14153                         MonoInst *ins;
14154
14155                         if (live_range_start [vreg]) {
14156                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14157                                 ins->inst_c0 = i;
14158                                 ins->inst_c1 = vreg;
14159                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14160                         }
14161                         if (live_range_end [vreg]) {
14162                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14163                                 ins->inst_c0 = i;
14164                                 ins->inst_c1 = vreg;
14165                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14166                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14167                                 else
14168                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14169                         }
14170                 }
14171         }
14172
14173         if (cfg->gsharedvt_locals_var_ins) {
14174                 /* Nullify if unused */
14175                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14176                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14177         }
14178
14179         g_free (live_range_start);
14180         g_free (live_range_end);
14181         g_free (live_range_start_bb);
14182         g_free (live_range_end_bb);
14183 }
14184
14185
14186 /**
14187  * FIXME:
14188  * - use 'iadd' instead of 'int_add'
14189  * - handling ovf opcodes: decompose in method_to_ir.
14190  * - unify iregs/fregs
14191  *   -> partly done, the missing parts are:
14192  *   - a more complete unification would involve unifying the hregs as well, so
14193  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14194  *     would no longer map to the machine hregs, so the code generators would need to
14195  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14196  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14197  *     fp/non-fp branches speeds it up by about 15%.
14198  * - use sext/zext opcodes instead of shifts
14199  * - add OP_ICALL
14200  * - get rid of TEMPLOADs if possible and use vregs instead
14201  * - clean up usage of OP_P/OP_ opcodes
14202  * - cleanup usage of DUMMY_USE
14203  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14204  *   stack
14205  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14206  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14207  * - make sure handle_stack_args () is called before the branch is emitted
14208  * - when the new IR is done, get rid of all unused stuff
14209  * - COMPARE/BEQ as separate instructions or unify them ?
14210  *   - keeping them separate allows specialized compare instructions like
14211  *     compare_imm, compare_membase
14212  *   - most back ends unify fp compare+branch, fp compare+ceq
14213  * - integrate mono_save_args into inline_method
14214  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14215  * - handle long shift opts on 32 bit platforms somehow: they require
14216  *   3 sregs (2 for arg1 and 1 for arg2)
14217  * - make byref a 'normal' type.
14218  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14219  *   variable if needed.
14220  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14221  *   like inline_method.
14222  * - remove inlining restrictions
14223  * - fix LNEG and enable cfold of INEG
14224  * - generalize x86 optimizations like ldelema as a peephole optimization
14225  * - add store_mem_imm for amd64
14226  * - optimize the loading of the interruption flag in the managed->native wrappers
14227  * - avoid special handling of OP_NOP in passes
14228  * - move code inserting instructions into one function/macro.
14229  * - try a coalescing phase after liveness analysis
14230  * - add float -> vreg conversion + local optimizations on !x86
14231  * - figure out how to handle decomposed branches during optimizations, ie.
14232  *   compare+branch, op_jump_table+op_br etc.
14233  * - promote RuntimeXHandles to vregs
14234  * - vtype cleanups:
14235  *   - add a NEW_VARLOADA_VREG macro
14236  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14237  *   accessing vtype fields.
14238  * - get rid of I8CONST on 64 bit platforms
14239  * - dealing with the increase in code size due to branches created during opcode
14240  *   decomposition:
14241  *   - use extended basic blocks
14242  *     - all parts of the JIT
14243  *     - handle_global_vregs () && local regalloc
14244  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14245  * - sources of increase in code size:
14246  *   - vtypes
14247  *   - long compares
14248  *   - isinst and castclass
14249  *   - lvregs not allocated to global registers even if used multiple times
14250  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14251  *   meaningful.
14252  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14253  * - add all micro optimizations from the old JIT
14254  * - put tree optimizations into the deadce pass
14255  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14256  *   specific function.
14257  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14258  *   fcompare + branchCC.
14259  * - create a helper function for allocating a stack slot, taking into account
14260  *   MONO_CFG_HAS_SPILLUP.
14261  * - merge r68207.
14262  * - optimize mono_regstate2_alloc_int/float.
14263  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14264  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14265  *   parts of the tree could be separated by other instructions, killing the tree
14266  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14267  *   instructions if the result of the load is used multiple times ?
14268  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14269  * - LAST MERGE: 108395.
14270  * - when returning vtypes in registers, generate IR and append it to the end of the
14271  *   last bb instead of doing it in the epilog.
14272  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14273  */
14274
14275 /*
14276
14277 NOTES
14278 -----
14279
14280 - When to decompose opcodes:
14281   - earlier: this makes some optimizations hard to implement, since the low level IR
14282   no longer contains the neccessary information. But it is easier to do.
14283   - later: harder to implement, enables more optimizations.
14284 - Branches inside bblocks:
14285   - created when decomposing complex opcodes.
14286     - branches to another bblock: harmless, but not tracked by the branch
14287       optimizations, so need to branch to a label at the start of the bblock.
14288     - branches to inside the same bblock: very problematic, trips up the local
14289       reg allocator. Can be fixed by spitting the current bblock, but that is a
14290       complex operation, since some local vregs can become global vregs etc.
14291 - Local/global vregs:
14292   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14293     local register allocator.
14294   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14295     structure, created by mono_create_var (). Assigned to hregs or the stack by
14296     the global register allocator.
14297 - When to do optimizations like alu->alu_imm:
14298   - earlier -> saves work later on since the IR will be smaller/simpler
14299   - later -> can work on more instructions
14300 - Handling of valuetypes:
14301   - When a vtype is pushed on the stack, a new temporary is created, an
14302     instruction computing its address (LDADDR) is emitted and pushed on
14303     the stack. Need to optimize cases when the vtype is used immediately as in
14304     argument passing, stloc etc.
14305 - Instead of the to_end stuff in the old JIT, simply call the function handling
14306   the values on the stack before emitting the last instruction of the bb.
14307 */
14308
14309 #endif /* !DISABLE_JIT */