mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var || cfg->llvm_only)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static void
1768 emit_instrumentation_call (MonoCompile *cfg, void *func, gboolean entry)
1769 {
1770         MonoInst *iargs [1];
1771
1772         /*
1773          * Avoid instrumenting inlined methods since it can
1774          * distort profiling results.
1775          */
1776         if (cfg->method != cfg->current_method)
1777                 return;
1778
1779         if (mono_profiler_should_instrument_method (cfg->method, entry)) {
1780                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1781                 mono_emit_jit_icall (cfg, func, iargs);
1782         }
1783 }
1784
1785 static int
1786 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1787 {
1788 handle_enum:
1789         type = mini_get_underlying_type (type);
1790         switch (type->type) {
1791         case MONO_TYPE_VOID:
1792                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1793         case MONO_TYPE_I1:
1794         case MONO_TYPE_U1:
1795         case MONO_TYPE_I2:
1796         case MONO_TYPE_U2:
1797         case MONO_TYPE_I4:
1798         case MONO_TYPE_U4:
1799                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1800         case MONO_TYPE_I:
1801         case MONO_TYPE_U:
1802         case MONO_TYPE_PTR:
1803         case MONO_TYPE_FNPTR:
1804                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1805         case MONO_TYPE_CLASS:
1806         case MONO_TYPE_STRING:
1807         case MONO_TYPE_OBJECT:
1808         case MONO_TYPE_SZARRAY:
1809         case MONO_TYPE_ARRAY:
1810                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1811         case MONO_TYPE_I8:
1812         case MONO_TYPE_U8:
1813                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1814         case MONO_TYPE_R4:
1815                 if (cfg->r4fp)
1816                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1817                 else
1818                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1819         case MONO_TYPE_R8:
1820                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1821         case MONO_TYPE_VALUETYPE:
1822                 if (type->data.klass->enumtype) {
1823                         type = mono_class_enum_basetype (type->data.klass);
1824                         goto handle_enum;
1825                 } else
1826                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1827         case MONO_TYPE_TYPEDBYREF:
1828                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1829         case MONO_TYPE_GENERICINST:
1830                 type = &type->data.generic_class->container_class->byval_arg;
1831                 goto handle_enum;
1832         case MONO_TYPE_VAR:
1833         case MONO_TYPE_MVAR:
1834                 /* gsharedvt */
1835                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1836         default:
1837                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1838         }
1839         return -1;
1840 }
1841
1842 //XXX this ignores if t is byref
1843 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
1844
1845 /*
1846  * target_type_is_incompatible:
1847  * @cfg: MonoCompile context
1848  *
1849  * Check that the item @arg on the evaluation stack can be stored
1850  * in the target type (can be a local, or field, etc).
1851  * The cfg arg can be used to check if we need verification or just
1852  * validity checks.
1853  *
1854  * Returns: non-0 value if arg can't be stored on a target.
1855  */
1856 static int
1857 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1858 {
1859         MonoType *simple_type;
1860         MonoClass *klass;
1861
1862         if (target->byref) {
1863                 /* FIXME: check that the pointed to types match */
1864                 if (arg->type == STACK_MP) {
1865                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1866                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1867                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1868
1869                         /* if the target is native int& or same type */
1870                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1871                                 return 0;
1872
1873                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1874                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1875                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1876                                 return 0;
1877                         return 1;
1878                 }
1879                 if (arg->type == STACK_PTR)
1880                         return 0;
1881                 return 1;
1882         }
1883
1884         simple_type = mini_get_underlying_type (target);
1885         switch (simple_type->type) {
1886         case MONO_TYPE_VOID:
1887                 return 1;
1888         case MONO_TYPE_I1:
1889         case MONO_TYPE_U1:
1890         case MONO_TYPE_I2:
1891         case MONO_TYPE_U2:
1892         case MONO_TYPE_I4:
1893         case MONO_TYPE_U4:
1894                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1895                         return 1;
1896                 return 0;
1897         case MONO_TYPE_PTR:
1898                 /* STACK_MP is needed when setting pinned locals */
1899                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1900                         return 1;
1901                 return 0;
1902         case MONO_TYPE_I:
1903         case MONO_TYPE_U:
1904         case MONO_TYPE_FNPTR:
1905                 /*
1906                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1907                  * in native int. (#688008).
1908                  */
1909                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_CLASS:
1913         case MONO_TYPE_STRING:
1914         case MONO_TYPE_OBJECT:
1915         case MONO_TYPE_SZARRAY:
1916         case MONO_TYPE_ARRAY:
1917                 if (arg->type != STACK_OBJ)
1918                         return 1;
1919                 /* FIXME: check type compatibility */
1920                 return 0;
1921         case MONO_TYPE_I8:
1922         case MONO_TYPE_U8:
1923                 if (arg->type != STACK_I8)
1924                         return 1;
1925                 return 0;
1926         case MONO_TYPE_R4:
1927                 if (arg->type != cfg->r4_stack_type)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_R8:
1931                 if (arg->type != STACK_R8)
1932                         return 1;
1933                 return 0;
1934         case MONO_TYPE_VALUETYPE:
1935                 if (arg->type != STACK_VTYPE)
1936                         return 1;
1937                 klass = mono_class_from_mono_type (simple_type);
1938                 if (klass != arg->klass)
1939                         return 1;
1940                 return 0;
1941         case MONO_TYPE_TYPEDBYREF:
1942                 if (arg->type != STACK_VTYPE)
1943                         return 1;
1944                 klass = mono_class_from_mono_type (simple_type);
1945                 if (klass != arg->klass)
1946                         return 1;
1947                 return 0;
1948         case MONO_TYPE_GENERICINST:
1949                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1950                         MonoClass *target_class;
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                         klass = mono_class_from_mono_type (simple_type);
1954                         target_class = mono_class_from_mono_type (target);
1955                         /* The second cases is needed when doing partial sharing */
1956                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1957                                 return 1;
1958                         return 0;
1959                 } else {
1960                         if (arg->type != STACK_OBJ)
1961                                 return 1;
1962                         /* FIXME: check type compatibility */
1963                         return 0;
1964                 }
1965         case MONO_TYPE_VAR:
1966         case MONO_TYPE_MVAR:
1967                 g_assert (cfg->gshared);
1968                 if (mini_type_var_is_vt (simple_type)) {
1969                         if (arg->type != STACK_VTYPE)
1970                                 return 1;
1971                 } else {
1972                         if (arg->type != STACK_OBJ)
1973                                 return 1;
1974                 }
1975                 return 0;
1976         default:
1977                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1978         }
1979         return 1;
1980 }
1981
1982 /*
1983  * Prepare arguments for passing to a function call.
1984  * Return a non-zero value if the arguments can't be passed to the given
1985  * signature.
1986  * The type checks are not yet complete and some conversions may need
1987  * casts on 32 or 64 bit architectures.
1988  *
1989  * FIXME: implement this using target_type_is_incompatible ()
1990  */
1991 static int
1992 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1993 {
1994         MonoType *simple_type;
1995         int i;
1996
1997         if (sig->hasthis) {
1998                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1999                         return 1;
2000                 args++;
2001         }
2002         for (i = 0; i < sig->param_count; ++i) {
2003                 if (sig->params [i]->byref) {
2004                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2005                                 return 1;
2006                         continue;
2007                 }
2008                 simple_type = mini_get_underlying_type (sig->params [i]);
2009 handle_enum:
2010                 switch (simple_type->type) {
2011                 case MONO_TYPE_VOID:
2012                         return 1;
2013                         continue;
2014                 case MONO_TYPE_I1:
2015                 case MONO_TYPE_U1:
2016                 case MONO_TYPE_I2:
2017                 case MONO_TYPE_U2:
2018                 case MONO_TYPE_I4:
2019                 case MONO_TYPE_U4:
2020                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2021                                 return 1;
2022                         continue;
2023                 case MONO_TYPE_I:
2024                 case MONO_TYPE_U:
2025                 case MONO_TYPE_PTR:
2026                 case MONO_TYPE_FNPTR:
2027                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_CLASS:
2031                 case MONO_TYPE_STRING:
2032                 case MONO_TYPE_OBJECT:
2033                 case MONO_TYPE_SZARRAY:
2034                 case MONO_TYPE_ARRAY:
2035                         if (args [i]->type != STACK_OBJ)
2036                                 return 1;
2037                         continue;
2038                 case MONO_TYPE_I8:
2039                 case MONO_TYPE_U8:
2040                         if (args [i]->type != STACK_I8)
2041                                 return 1;
2042                         continue;
2043                 case MONO_TYPE_R4:
2044                         if (args [i]->type != cfg->r4_stack_type)
2045                                 return 1;
2046                         continue;
2047                 case MONO_TYPE_R8:
2048                         if (args [i]->type != STACK_R8)
2049                                 return 1;
2050                         continue;
2051                 case MONO_TYPE_VALUETYPE:
2052                         if (simple_type->data.klass->enumtype) {
2053                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2054                                 goto handle_enum;
2055                         }
2056                         if (args [i]->type != STACK_VTYPE)
2057                                 return 1;
2058                         continue;
2059                 case MONO_TYPE_TYPEDBYREF:
2060                         if (args [i]->type != STACK_VTYPE)
2061                                 return 1;
2062                         continue;
2063                 case MONO_TYPE_GENERICINST:
2064                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2065                         goto handle_enum;
2066                 case MONO_TYPE_VAR:
2067                 case MONO_TYPE_MVAR:
2068                         /* gsharedvt */
2069                         if (args [i]->type != STACK_VTYPE)
2070                                 return 1;
2071                         continue;
2072                 default:
2073                         g_error ("unknown type 0x%02x in check_call_signature",
2074                                  simple_type->type);
2075                 }
2076         }
2077         return 0;
2078 }
2079
2080 static int
2081 callvirt_to_call (int opcode)
2082 {
2083         switch (opcode) {
2084         case OP_CALL_MEMBASE:
2085                 return OP_CALL;
2086         case OP_VOIDCALL_MEMBASE:
2087                 return OP_VOIDCALL;
2088         case OP_FCALL_MEMBASE:
2089                 return OP_FCALL;
2090         case OP_RCALL_MEMBASE:
2091                 return OP_RCALL;
2092         case OP_VCALL_MEMBASE:
2093                 return OP_VCALL;
2094         case OP_LCALL_MEMBASE:
2095                 return OP_LCALL;
2096         default:
2097                 g_assert_not_reached ();
2098         }
2099
2100         return -1;
2101 }
2102
2103 static int
2104 callvirt_to_call_reg (int opcode)
2105 {
2106         switch (opcode) {
2107         case OP_CALL_MEMBASE:
2108                 return OP_CALL_REG;
2109         case OP_VOIDCALL_MEMBASE:
2110                 return OP_VOIDCALL_REG;
2111         case OP_FCALL_MEMBASE:
2112                 return OP_FCALL_REG;
2113         case OP_RCALL_MEMBASE:
2114                 return OP_RCALL_REG;
2115         case OP_VCALL_MEMBASE:
2116                 return OP_VCALL_REG;
2117         case OP_LCALL_MEMBASE:
2118                 return OP_LCALL_REG;
2119         default:
2120                 g_assert_not_reached ();
2121         }
2122
2123         return -1;
2124 }
2125
2126 /* Either METHOD or IMT_ARG needs to be set */
2127 static void
2128 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2129 {
2130         int method_reg;
2131
2132         if (COMPILE_LLVM (cfg)) {
2133                 if (imt_arg) {
2134                         method_reg = alloc_preg (cfg);
2135                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2136                 } else {
2137                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2138                         method_reg = ins->dreg;
2139                 }
2140
2141 #ifdef ENABLE_LLVM
2142                 call->imt_arg_reg = method_reg;
2143 #endif
2144                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2145                 return;
2146         }
2147
2148         if (imt_arg) {
2149                 method_reg = alloc_preg (cfg);
2150                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2151         } else {
2152                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2153                 method_reg = ins->dreg;
2154         }
2155
2156         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2157 }
2158
2159 static MonoJumpInfo *
2160 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2161 {
2162         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2163
2164         ji->ip.i = ip;
2165         ji->type = type;
2166         ji->data.target = target;
2167
2168         return ji;
2169 }
2170
2171 int
2172 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2173 {
2174         if (cfg->gshared)
2175                 return mono_class_check_context_used (klass);
2176         else
2177                 return 0;
2178 }
2179
2180 static int
2181 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2182 {
2183         if (cfg->gshared)
2184                 return mono_method_check_context_used (method);
2185         else
2186                 return 0;
2187 }
2188
2189 /*
2190  * check_method_sharing:
2191  *
2192  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2193  */
2194 static void
2195 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2196 {
2197         gboolean pass_vtable = FALSE;
2198         gboolean pass_mrgctx = FALSE;
2199
2200         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2201                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2202                 gboolean sharable = FALSE;
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2205                         sharable = TRUE;
2206
2207                 /*
2208                  * Pass vtable iff target method might
2209                  * be shared, which means that sharing
2210                  * is enabled for its class and its
2211                  * context is sharable (and it's not a
2212                  * generic method).
2213                  */
2214                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2215                         pass_vtable = TRUE;
2216         }
2217
2218         if (mini_method_get_context (cmethod) &&
2219                 mini_method_get_context (cmethod)->method_inst) {
2220                 g_assert (!pass_vtable);
2221
2222                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2223                         pass_mrgctx = TRUE;
2224                 } else {
2225                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2226                                 pass_mrgctx = TRUE;
2227                 }
2228         }
2229
2230         if (out_pass_vtable)
2231                 *out_pass_vtable = pass_vtable;
2232         if (out_pass_mrgctx)
2233                 *out_pass_mrgctx = pass_mrgctx;
2234 }
2235
2236 inline static MonoCallInst *
2237 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2238                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2239 {
2240         MonoType *sig_ret;
2241         MonoCallInst *call;
2242 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2243         int i;
2244 #endif
2245
2246         if (cfg->llvm_only)
2247                 tail = FALSE;
2248
2249         if (tail) {
2250                 emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
2251
2252                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2253         } else
2254                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2255
2256         call->args = args;
2257         call->signature = sig;
2258         call->rgctx_reg = rgctx;
2259         sig_ret = mini_get_underlying_type (sig->ret);
2260
2261         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2262
2263         if (tail) {
2264                 if (mini_type_is_vtype (sig_ret)) {
2265                         call->vret_var = cfg->vret_addr;
2266                         //g_assert_not_reached ();
2267                 }
2268         } else if (mini_type_is_vtype (sig_ret)) {
2269                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2270                 MonoInst *loada;
2271
2272                 temp->backend.is_pinvoke = sig->pinvoke;
2273
2274                 /*
2275                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2276                  * address of return value to increase optimization opportunities.
2277                  * Before vtype decomposition, the dreg of the call ins itself represents the
2278                  * fact the call modifies the return value. After decomposition, the call will
2279                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2280                  * will be transformed into an LDADDR.
2281                  */
2282                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2283                 loada->dreg = alloc_preg (cfg);
2284                 loada->inst_p0 = temp;
2285                 /* We reference the call too since call->dreg could change during optimization */
2286                 loada->inst_p1 = call;
2287                 MONO_ADD_INS (cfg->cbb, loada);
2288
2289                 call->inst.dreg = temp->dreg;
2290
2291                 call->vret_var = loada;
2292         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2293                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2294
2295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2296         if (COMPILE_SOFT_FLOAT (cfg)) {
2297                 /*
2298                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2299                  * an icall, but that cannot be done during the call sequence since it would clobber
2300                  * the call registers + the stack. So we do it before emitting the call.
2301                  */
2302                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2303                         MonoType *t;
2304                         MonoInst *in = call->args [i];
2305
2306                         if (i >= sig->hasthis)
2307                                 t = sig->params [i - sig->hasthis];
2308                         else
2309                                 t = &mono_defaults.int_class->byval_arg;
2310                         t = mono_type_get_underlying_type (t);
2311
2312                         if (!t->byref && t->type == MONO_TYPE_R4) {
2313                                 MonoInst *iargs [1];
2314                                 MonoInst *conv;
2315
2316                                 iargs [0] = in;
2317                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2318
2319                                 /* The result will be in an int vreg */
2320                                 call->args [i] = conv;
2321                         }
2322                 }
2323         }
2324 #endif
2325
2326         call->need_unbox_trampoline = unbox_trampoline;
2327
2328 #ifdef ENABLE_LLVM
2329         if (COMPILE_LLVM (cfg))
2330                 mono_llvm_emit_call (cfg, call);
2331         else
2332                 mono_arch_emit_call (cfg, call);
2333 #else
2334         mono_arch_emit_call (cfg, call);
2335 #endif
2336
2337         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2338         cfg->flags |= MONO_CFG_HAS_CALLS;
2339
2340         return call;
2341 }
2342
2343 static void
2344 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2345 {
2346         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2347         cfg->uses_rgctx_reg = TRUE;
2348         call->rgctx_reg = TRUE;
2349 #ifdef ENABLE_LLVM
2350         call->rgctx_arg_reg = rgctx_reg;
2351 #endif
2352 }
2353
2354 MonoInst*
2355 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2356 {
2357         MonoCallInst *call;
2358         MonoInst *ins;
2359         int rgctx_reg = -1;
2360         gboolean check_sp = FALSE;
2361
2362         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2363                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2364
2365                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2366                         check_sp = TRUE;
2367         }
2368
2369         if (rgctx_arg) {
2370                 rgctx_reg = mono_alloc_preg (cfg);
2371                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2372         }
2373
2374         if (check_sp) {
2375                 if (!cfg->stack_inbalance_var)
2376                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2377
2378                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2379                 ins->dreg = cfg->stack_inbalance_var->dreg;
2380                 MONO_ADD_INS (cfg->cbb, ins);
2381         }
2382
2383         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2384
2385         call->inst.sreg1 = addr->dreg;
2386
2387         if (imt_arg)
2388                 emit_imt_argument (cfg, call, NULL, imt_arg);
2389
2390         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2391
2392         if (check_sp) {
2393                 int sp_reg;
2394
2395                 sp_reg = mono_alloc_preg (cfg);
2396
2397                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2398                 ins->dreg = sp_reg;
2399                 MONO_ADD_INS (cfg->cbb, ins);
2400
2401                 /* Restore the stack so we don't crash when throwing the exception */
2402                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2403                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2404                 MONO_ADD_INS (cfg->cbb, ins);
2405
2406                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2407                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2408         }
2409
2410         if (rgctx_arg)
2411                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2412
2413         return (MonoInst*)call;
2414 }
2415
2416 static MonoInst*
2417 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2418
2419 static MonoInst*
2420 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2421                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2422 {
2423 #ifndef DISABLE_REMOTING
2424         gboolean might_be_remote = FALSE;
2425 #endif
2426         gboolean virtual_ = this_ins != NULL;
2427         gboolean enable_for_aot = TRUE;
2428         int context_used;
2429         MonoCallInst *call;
2430         MonoInst *call_target = NULL;
2431         int rgctx_reg = 0;
2432         gboolean need_unbox_trampoline;
2433
2434         if (!sig)
2435                 sig = mono_method_signature (method);
2436
2437         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2438                 g_assert_not_reached ();
2439
2440         if (rgctx_arg) {
2441                 rgctx_reg = mono_alloc_preg (cfg);
2442                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2443         }
2444
2445         if (method->string_ctor) {
2446                 /* Create the real signature */
2447                 /* FIXME: Cache these */
2448                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2449                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2450
2451                 sig = ctor_sig;
2452         }
2453
2454         context_used = mini_method_check_context_used (cfg, method);
2455
2456 #ifndef DISABLE_REMOTING
2457         might_be_remote = this_ins && sig->hasthis &&
2458                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2459                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2460
2461         if (might_be_remote && context_used) {
2462                 MonoInst *addr;
2463
2464                 g_assert (cfg->gshared);
2465
2466                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2467
2468                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2469         }
2470 #endif
2471
2472         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2473                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2474
2475         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2476
2477         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2478
2479 #ifndef DISABLE_REMOTING
2480         if (might_be_remote)
2481                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2482         else
2483 #endif
2484                 call->method = method;
2485         call->inst.flags |= MONO_INST_HAS_METHOD;
2486         call->inst.inst_left = this_ins;
2487         call->tail_call = tail;
2488
2489         if (virtual_) {
2490                 int vtable_reg, slot_reg, this_reg;
2491                 int offset;
2492
2493                 this_reg = this_ins->dreg;
2494
2495                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2496                         MonoInst *dummy_use;
2497
2498                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2499
2500                         /* Make a call to delegate->invoke_impl */
2501                         call->inst.inst_basereg = this_reg;
2502                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2503                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2504
2505                         /* We must emit a dummy use here because the delegate trampoline will
2506                         replace the 'this' argument with the delegate target making this activation
2507                         no longer a root for the delegate.
2508                         This is an issue for delegates that target collectible code such as dynamic
2509                         methods of GC'able assemblies.
2510
2511                         For a test case look into #667921.
2512
2513                         FIXME: a dummy use is not the best way to do it as the local register allocator
2514                         will put it on a caller save register and spil it around the call.
2515                         Ideally, we would either put it on a callee save register or only do the store part.
2516                          */
2517                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2518
2519                         return (MonoInst*)call;
2520                 }
2521
2522                 if ((!cfg->compile_aot || enable_for_aot) &&
2523                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2524                          (MONO_METHOD_IS_FINAL (method) &&
2525                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2526                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2527                         /*
2528                          * the method is not virtual, we just need to ensure this is not null
2529                          * and then we can call the method directly.
2530                          */
2531 #ifndef DISABLE_REMOTING
2532                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2533                                 /*
2534                                  * The check above ensures method is not gshared, this is needed since
2535                                  * gshared methods can't have wrappers.
2536                                  */
2537                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2538                         }
2539 #endif
2540
2541                         if (!method->string_ctor)
2542                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2543
2544                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2545                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2546                         /*
2547                          * the method is virtual, but we can statically dispatch since either
2548                          * it's class or the method itself are sealed.
2549                          * But first we need to ensure it's not a null reference.
2550                          */
2551                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2552
2553                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2554                 } else if (call_target) {
2555                         vtable_reg = alloc_preg (cfg);
2556                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2557
2558                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2559                         call->inst.sreg1 = call_target->dreg;
2560                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2561                 } else {
2562                         vtable_reg = alloc_preg (cfg);
2563                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2564                         if (mono_class_is_interface (method->klass)) {
2565                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2566                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2567                                 slot_reg = vtable_reg;
2568                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2569                         } else {
2570                                 slot_reg = vtable_reg;
2571                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2572                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2573                                 if (imt_arg) {
2574                                         g_assert (mono_method_signature (method)->generic_param_count);
2575                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2576                                 }
2577                         }
2578
2579                         call->inst.sreg1 = slot_reg;
2580                         call->inst.inst_offset = offset;
2581                         call->is_virtual = TRUE;
2582                 }
2583         }
2584
2585         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2586
2587         if (rgctx_arg)
2588                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2589
2590         return (MonoInst*)call;
2591 }
2592
2593 MonoInst*
2594 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2595 {
2596         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2597 }
2598
2599 MonoInst*
2600 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2601                                            MonoInst **args)
2602 {
2603         MonoCallInst *call;
2604
2605         g_assert (sig);
2606
2607         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2608         call->fptr = func;
2609
2610         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2611
2612         return (MonoInst*)call;
2613 }
2614
2615 MonoInst*
2616 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2617 {
2618         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2619
2620         g_assert (info);
2621
2622         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2623 }
2624
2625 /*
2626  * mono_emit_abs_call:
2627  *
2628  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2629  */
2630 inline static MonoInst*
2631 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2632                                         MonoMethodSignature *sig, MonoInst **args)
2633 {
2634         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2635         MonoInst *ins;
2636
2637         /*
2638          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2639          * handle it.
2640          */
2641         if (cfg->abs_patches == NULL)
2642                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2643         g_hash_table_insert (cfg->abs_patches, ji, ji);
2644         ins = mono_emit_native_call (cfg, ji, sig, args);
2645         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2646         return ins;
2647 }
2648
2649 static MonoMethodSignature*
2650 sig_to_rgctx_sig (MonoMethodSignature *sig)
2651 {
2652         // FIXME: memory allocation
2653         MonoMethodSignature *res;
2654         int i;
2655
2656         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2657         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2658         res->param_count = sig->param_count + 1;
2659         for (i = 0; i < sig->param_count; ++i)
2660                 res->params [i] = sig->params [i];
2661         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2662         return res;
2663 }
2664
2665 /* Make an indirect call to FSIG passing an additional argument */
2666 static MonoInst*
2667 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2668 {
2669         MonoMethodSignature *csig;
2670         MonoInst *args_buf [16];
2671         MonoInst **args;
2672         int i, pindex, tmp_reg;
2673
2674         /* Make a call with an rgctx/extra arg */
2675         if (fsig->param_count + 2 < 16)
2676                 args = args_buf;
2677         else
2678                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2679         pindex = 0;
2680         if (fsig->hasthis)
2681                 args [pindex ++] = orig_args [0];
2682         for (i = 0; i < fsig->param_count; ++i)
2683                 args [pindex ++] = orig_args [fsig->hasthis + i];
2684         tmp_reg = alloc_preg (cfg);
2685         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2686         csig = sig_to_rgctx_sig (fsig);
2687         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2688 }
2689
2690 /* Emit an indirect call to the function descriptor ADDR */
2691 static MonoInst*
2692 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2693 {
2694         int addr_reg, arg_reg;
2695         MonoInst *call_target;
2696
2697         g_assert (cfg->llvm_only);
2698
2699         /*
2700          * addr points to a <addr, arg> pair, load both of them, and
2701          * make a call to addr, passing arg as an extra arg.
2702          */
2703         addr_reg = alloc_preg (cfg);
2704         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2705         arg_reg = alloc_preg (cfg);
2706         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2707
2708         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2709 }
2710
2711 static gboolean
2712 direct_icalls_enabled (MonoCompile *cfg)
2713 {
2714         return FALSE;
2715
2716         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2717 #ifdef TARGET_AMD64
2718         if (cfg->compile_llvm && !cfg->llvm_only)
2719                 return FALSE;
2720 #endif
2721         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2722                 return FALSE;
2723         return TRUE;
2724 }
2725
2726 MonoInst*
2727 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2728 {
2729         /*
2730          * Call the jit icall without a wrapper if possible.
2731          * The wrapper is needed for the following reasons:
2732          * - to handle exceptions thrown using mono_raise_exceptions () from the
2733          *   icall function. The EH code needs the lmf frame pushed by the
2734          *   wrapper to be able to unwind back to managed code.
2735          * - to be able to do stack walks for asynchronously suspended
2736          *   threads when debugging.
2737          */
2738         if (info->no_raise && direct_icalls_enabled (cfg)) {
2739                 char *name;
2740                 int costs;
2741
2742                 if (!info->wrapper_method) {
2743                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2744                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2745                         g_free (name);
2746                         mono_memory_barrier ();
2747                 }
2748
2749                 /*
2750                  * Inline the wrapper method, which is basically a call to the C icall, and
2751                  * an exception check.
2752                  */
2753                 costs = inline_method (cfg, info->wrapper_method, NULL,
2754                                                            args, NULL, il_offset, TRUE);
2755                 g_assert (costs > 0);
2756                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2757
2758                 return args [0];
2759         } else {
2760                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2761         }
2762 }
2763
2764 static MonoInst*
2765 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2766 {
2767         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2768                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2769                         int widen_op = -1;
2770
2771                         /*
2772                          * Native code might return non register sized integers
2773                          * without initializing the upper bits.
2774                          */
2775                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2776                         case OP_LOADI1_MEMBASE:
2777                                 widen_op = OP_ICONV_TO_I1;
2778                                 break;
2779                         case OP_LOADU1_MEMBASE:
2780                                 widen_op = OP_ICONV_TO_U1;
2781                                 break;
2782                         case OP_LOADI2_MEMBASE:
2783                                 widen_op = OP_ICONV_TO_I2;
2784                                 break;
2785                         case OP_LOADU2_MEMBASE:
2786                                 widen_op = OP_ICONV_TO_U2;
2787                                 break;
2788                         default:
2789                                 break;
2790                         }
2791
2792                         if (widen_op != -1) {
2793                                 int dreg = alloc_preg (cfg);
2794                                 MonoInst *widen;
2795
2796                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2797                                 widen->type = ins->type;
2798                                 ins = widen;
2799                         }
2800                 }
2801         }
2802
2803         return ins;
2804 }
2805
2806
2807 static void
2808 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2809 {
2810         MonoInst *args [16];
2811
2812         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2813         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2814
2815         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2816 }
2817
2818 MonoMethod*
2819 mini_get_memcpy_method (void)
2820 {
2821         static MonoMethod *memcpy_method = NULL;
2822         if (!memcpy_method) {
2823                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2824                 if (!memcpy_method)
2825                         g_error ("Old corlib found. Install a new one");
2826         }
2827         return memcpy_method;
2828 }
2829
2830 void
2831 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2832 {
2833         int card_table_shift_bits;
2834         gpointer card_table_mask;
2835         guint8 *card_table;
2836         MonoInst *dummy_use;
2837         int nursery_shift_bits;
2838         size_t nursery_size;
2839
2840         if (!cfg->gen_write_barriers)
2841                 return;
2842
2843         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2844
2845         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2846
2847         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2848
2849         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2850                 MonoInst *wbarrier;
2851
2852                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2853                 wbarrier->sreg1 = ptr->dreg;
2854                 wbarrier->sreg2 = value->dreg;
2855                 MONO_ADD_INS (cfg->cbb, wbarrier);
2856         } else if (card_table) {
2857                 int offset_reg = alloc_preg (cfg);
2858                 int card_reg;
2859                 MonoInst *ins;
2860
2861                 /*
2862                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2863                  * collector case, so, for the serial collector, it might slightly slow down nursery
2864                  * collections. We also expect that the host system and the target system have the same card
2865                  * table configuration, which is the case if they have the same pointer size.
2866                  */
2867
2868                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2869                 if (card_table_mask)
2870                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2871
2872                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2873                  * IMM's larger than 32bits.
2874                  */
2875                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2876                 card_reg = ins->dreg;
2877
2878                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2879                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2880         } else {
2881                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2882                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2883         }
2884
2885         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2886 }
2887
2888 MonoMethod*
2889 mini_get_memset_method (void)
2890 {
2891         static MonoMethod *memset_method = NULL;
2892         if (!memset_method) {
2893                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2894                 if (!memset_method)
2895                         g_error ("Old corlib found. Install a new one");
2896         }
2897         return memset_method;
2898 }
2899
2900 void
2901 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2902 {
2903         MonoInst *iargs [3];
2904         int n;
2905         guint32 align;
2906         MonoMethod *memset_method;
2907         MonoInst *size_ins = NULL;
2908         MonoInst *bzero_ins = NULL;
2909         static MonoMethod *bzero_method;
2910
2911         /* FIXME: Optimize this for the case when dest is an LDADDR */
2912         mono_class_init (klass);
2913         if (mini_is_gsharedvt_klass (klass)) {
2914                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2915                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2916                 if (!bzero_method)
2917                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2918                 g_assert (bzero_method);
2919                 iargs [0] = dest;
2920                 iargs [1] = size_ins;
2921                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2922                 return;
2923         }
2924
2925         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2926
2927         n = mono_class_value_size (klass, &align);
2928
2929         if (n <= sizeof (gpointer) * 8) {
2930                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2931         }
2932         else {
2933                 memset_method = mini_get_memset_method ();
2934                 iargs [0] = dest;
2935                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2936                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2937                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2938         }
2939 }
2940
2941 /*
2942  * emit_get_rgctx:
2943  *
2944  *   Emit IR to return either the this pointer for instance method,
2945  * or the mrgctx for static methods.
2946  */
2947 static MonoInst*
2948 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2949 {
2950         MonoInst *this_ins = NULL;
2951
2952         g_assert (cfg->gshared);
2953
2954         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2955                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2956                 !method->klass->valuetype)
2957                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2958
2959         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2960                 MonoInst *mrgctx_loc, *mrgctx_var;
2961
2962                 g_assert (!this_ins);
2963                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2964
2965                 mrgctx_loc = mono_get_vtable_var (cfg);
2966                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2967
2968                 return mrgctx_var;
2969         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2970                 MonoInst *mrgctx_loc, *mrgctx_var;
2971
2972                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2973                 mrgctx_loc = mono_get_vtable_var (cfg);
2974                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2975
2976                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2977
2978                 return mrgctx_var;
2979         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2980                 MonoInst *vtable_loc, *vtable_var;
2981
2982                 g_assert (!this_ins);
2983
2984                 vtable_loc = mono_get_vtable_var (cfg);
2985                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2986
2987                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2988                         MonoInst *mrgctx_var = vtable_var;
2989                         int vtable_reg;
2990
2991                         vtable_reg = alloc_preg (cfg);
2992                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2993                         vtable_var->type = STACK_PTR;
2994                 }
2995
2996                 return vtable_var;
2997         } else {
2998                 MonoInst *ins;
2999                 int vtable_reg;
3000
3001                 vtable_reg = alloc_preg (cfg);
3002                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3003                 return ins;
3004         }
3005 }
3006
3007 static MonoJumpInfoRgctxEntry *
3008 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3009 {
3010         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3011         res->method = method;
3012         res->in_mrgctx = in_mrgctx;
3013         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3014         res->data->type = patch_type;
3015         res->data->data.target = patch_data;
3016         res->info_type = info_type;
3017
3018         return res;
3019 }
3020
3021 static inline MonoInst*
3022 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3023 {
3024         MonoInst *args [16];
3025         MonoInst *call;
3026
3027         // FIXME: No fastpath since the slot is not a compile time constant
3028         args [0] = rgctx;
3029         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3030         if (entry->in_mrgctx)
3031                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3032         else
3033                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3034         return call;
3035 #if 0
3036         /*
3037          * FIXME: This can be called during decompose, which is a problem since it creates
3038          * new bblocks.
3039          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3040          */
3041         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3042         gboolean mrgctx;
3043         MonoBasicBlock *is_null_bb, *end_bb;
3044         MonoInst *res, *ins, *call;
3045         MonoInst *args[16];
3046
3047         slot = mini_get_rgctx_entry_slot (entry);
3048
3049         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3050         index = MONO_RGCTX_SLOT_INDEX (slot);
3051         if (mrgctx)
3052                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3053         for (depth = 0; ; ++depth) {
3054                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3055
3056                 if (index < size - 1)
3057                         break;
3058                 index -= size - 1;
3059         }
3060
3061         NEW_BBLOCK (cfg, end_bb);
3062         NEW_BBLOCK (cfg, is_null_bb);
3063
3064         if (mrgctx) {
3065                 rgctx_reg = rgctx->dreg;
3066         } else {
3067                 rgctx_reg = alloc_preg (cfg);
3068
3069                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3070                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3071                 NEW_BBLOCK (cfg, is_null_bb);
3072
3073                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3074                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3075         }
3076
3077         for (i = 0; i < depth; ++i) {
3078                 int array_reg = alloc_preg (cfg);
3079
3080                 /* load ptr to next array */
3081                 if (mrgctx && i == 0)
3082                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3083                 else
3084                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3085                 rgctx_reg = array_reg;
3086                 /* is the ptr null? */
3087                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3088                 /* if yes, jump to actual trampoline */
3089                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3090         }
3091
3092         /* fetch slot */
3093         val_reg = alloc_preg (cfg);
3094         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3095         /* is the slot null? */
3096         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3097         /* if yes, jump to actual trampoline */
3098         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3099
3100         /* Fastpath */
3101         res_reg = alloc_preg (cfg);
3102         MONO_INST_NEW (cfg, ins, OP_MOVE);
3103         ins->dreg = res_reg;
3104         ins->sreg1 = val_reg;
3105         MONO_ADD_INS (cfg->cbb, ins);
3106         res = ins;
3107         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3108
3109         /* Slowpath */
3110         MONO_START_BB (cfg, is_null_bb);
3111         args [0] = rgctx;
3112         EMIT_NEW_ICONST (cfg, args [1], index);
3113         if (mrgctx)
3114                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3115         else
3116                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3117         MONO_INST_NEW (cfg, ins, OP_MOVE);
3118         ins->dreg = res_reg;
3119         ins->sreg1 = call->dreg;
3120         MONO_ADD_INS (cfg->cbb, ins);
3121         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3122
3123         MONO_START_BB (cfg, end_bb);
3124
3125         return res;
3126 #endif
3127 }
3128
3129 /*
3130  * emit_rgctx_fetch:
3131  *
3132  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3133  * given by RGCTX.
3134  */
3135 static inline MonoInst*
3136 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3137 {
3138         if (cfg->llvm_only)
3139                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3140         else
3141                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3142 }
3143
3144 MonoInst*
3145 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3146                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3147 {
3148         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3149         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3150
3151         return emit_rgctx_fetch (cfg, rgctx, entry);
3152 }
3153
3154 static MonoInst*
3155 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3156                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3157 {
3158         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3159         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3160
3161         return emit_rgctx_fetch (cfg, rgctx, entry);
3162 }
3163
3164 static MonoInst*
3165 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3166                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3167 {
3168         MonoJumpInfoGSharedVtCall *call_info;
3169         MonoJumpInfoRgctxEntry *entry;
3170         MonoInst *rgctx;
3171
3172         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3173         call_info->sig = sig;
3174         call_info->method = cmethod;
3175
3176         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3177         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3178
3179         return emit_rgctx_fetch (cfg, rgctx, entry);
3180 }
3181
3182 /*
3183  * emit_get_rgctx_virt_method:
3184  *
3185  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3186  */
3187 static MonoInst*
3188 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3189                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3190 {
3191         MonoJumpInfoVirtMethod *info;
3192         MonoJumpInfoRgctxEntry *entry;
3193         MonoInst *rgctx;
3194
3195         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3196         info->klass = klass;
3197         info->method = virt_method;
3198
3199         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3200         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3201
3202         return emit_rgctx_fetch (cfg, rgctx, entry);
3203 }
3204
3205 static MonoInst*
3206 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3207                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3208 {
3209         MonoJumpInfoRgctxEntry *entry;
3210         MonoInst *rgctx;
3211
3212         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3213         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3214
3215         return emit_rgctx_fetch (cfg, rgctx, entry);
3216 }
3217
3218 /*
3219  * emit_get_rgctx_method:
3220  *
3221  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3222  * normal constants, else emit a load from the rgctx.
3223  */
3224 static MonoInst*
3225 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3226                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3227 {
3228         if (!context_used) {
3229                 MonoInst *ins;
3230
3231                 switch (rgctx_type) {
3232                 case MONO_RGCTX_INFO_METHOD:
3233                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3234                         return ins;
3235                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3236                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3237                         return ins;
3238                 default:
3239                         g_assert_not_reached ();
3240                 }
3241         } else {
3242                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3243                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3244
3245                 return emit_rgctx_fetch (cfg, rgctx, entry);
3246         }
3247 }
3248
3249 static MonoInst*
3250 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3251                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3252 {
3253         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3254         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3255
3256         return emit_rgctx_fetch (cfg, rgctx, entry);
3257 }
3258
3259 static int
3260 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3261 {
3262         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3263         MonoRuntimeGenericContextInfoTemplate *template_;
3264         int i, idx;
3265
3266         g_assert (info);
3267
3268         for (i = 0; i < info->num_entries; ++i) {
3269                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3270
3271                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3272                         return i;
3273         }
3274
3275         if (info->num_entries == info->count_entries) {
3276                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3277                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3278
3279                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3280
3281                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3282                 info->entries = new_entries;
3283                 info->count_entries = new_count_entries;
3284         }
3285
3286         idx = info->num_entries;
3287         template_ = &info->entries [idx];
3288         template_->info_type = rgctx_type;
3289         template_->data = data;
3290
3291         info->num_entries ++;
3292
3293         return idx;
3294 }
3295
3296 /*
3297  * emit_get_gsharedvt_info:
3298  *
3299  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3300  */
3301 static MonoInst*
3302 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3303 {
3304         MonoInst *ins;
3305         int idx, dreg;
3306
3307         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3308         /* Load info->entries [idx] */
3309         dreg = alloc_preg (cfg);
3310         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3311
3312         return ins;
3313 }
3314
3315 MonoInst*
3316 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3317 {
3318         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3319 }
3320
3321 /*
3322  * On return the caller must check @klass for load errors.
3323  */
3324 static void
3325 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3326 {
3327         MonoInst *vtable_arg;
3328         int context_used;
3329
3330         context_used = mini_class_check_context_used (cfg, klass);
3331
3332         if (context_used) {
3333                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3334                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3335         } else {
3336                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3337
3338                 if (!vtable)
3339                         return;
3340                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3341         }
3342
3343         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3344                 MonoInst *ins;
3345
3346                 /*
3347                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3348                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3349                  */
3350                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3351                 ins->sreg1 = vtable_arg->dreg;
3352                 MONO_ADD_INS (cfg->cbb, ins);
3353         } else {
3354                 int inited_reg;
3355                 MonoBasicBlock *inited_bb;
3356                 MonoInst *args [16];
3357
3358                 inited_reg = alloc_ireg (cfg);
3359
3360                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3361
3362                 NEW_BBLOCK (cfg, inited_bb);
3363
3364                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3365                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3366
3367                 args [0] = vtable_arg;
3368                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3369
3370                 MONO_START_BB (cfg, inited_bb);
3371         }
3372 }
3373
3374 static void
3375 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3376 {
3377         MonoInst *ins;
3378
3379         if (cfg->gen_seq_points && cfg->method == method) {
3380                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3381                 if (nonempty_stack)
3382                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3383                 MONO_ADD_INS (cfg->cbb, ins);
3384         }
3385 }
3386
3387 void
3388 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3389 {
3390         if (mini_get_debug_options ()->better_cast_details) {
3391                 int vtable_reg = alloc_preg (cfg);
3392                 int klass_reg = alloc_preg (cfg);
3393                 MonoBasicBlock *is_null_bb = NULL;
3394                 MonoInst *tls_get;
3395                 int to_klass_reg, context_used;
3396
3397                 if (null_check) {
3398                         NEW_BBLOCK (cfg, is_null_bb);
3399
3400                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3401                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3402                 }
3403
3404                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3405                 if (!tls_get) {
3406                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3407                         exit (1);
3408                 }
3409
3410                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3411                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3412
3413                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3414
3415                 context_used = mini_class_check_context_used (cfg, klass);
3416                 if (context_used) {
3417                         MonoInst *class_ins;
3418
3419                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3420                         to_klass_reg = class_ins->dreg;
3421                 } else {
3422                         to_klass_reg = alloc_preg (cfg);
3423                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3424                 }
3425                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3426
3427                 if (null_check)
3428                         MONO_START_BB (cfg, is_null_bb);
3429         }
3430 }
3431
3432 void
3433 mini_reset_cast_details (MonoCompile *cfg)
3434 {
3435         /* Reset the variables holding the cast details */
3436         if (mini_get_debug_options ()->better_cast_details) {
3437                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3438                 /* It is enough to reset the from field */
3439                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3440         }
3441 }
3442
3443 /*
3444  * On return the caller must check @array_class for load errors
3445  */
3446 static void
3447 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3448 {
3449         int vtable_reg = alloc_preg (cfg);
3450         int context_used;
3451
3452         context_used = mini_class_check_context_used (cfg, array_class);
3453
3454         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3455
3456         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3457
3458         if (cfg->opt & MONO_OPT_SHARED) {
3459                 int class_reg = alloc_preg (cfg);
3460                 MonoInst *ins;
3461
3462                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3463                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3464                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3465         } else if (context_used) {
3466                 MonoInst *vtable_ins;
3467
3468                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3469                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3470         } else {
3471                 if (cfg->compile_aot) {
3472                         int vt_reg;
3473                         MonoVTable *vtable;
3474
3475                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3476                                 return;
3477                         vt_reg = alloc_preg (cfg);
3478                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3479                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3480                 } else {
3481                         MonoVTable *vtable;
3482                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3483                                 return;
3484                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3485                 }
3486         }
3487
3488         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3489
3490         mini_reset_cast_details (cfg);
3491 }
3492
3493 /**
3494  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3495  * generic code is generated.
3496  */
3497 static MonoInst*
3498 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3499 {
3500         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3501
3502         if (context_used) {
3503                 MonoInst *rgctx, *addr;
3504
3505                 /* FIXME: What if the class is shared?  We might not
3506                    have to get the address of the method from the
3507                    RGCTX. */
3508                 addr = emit_get_rgctx_method (cfg, context_used, method,
3509                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3510                 if (cfg->llvm_only) {
3511                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3512                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3513                 } else {
3514                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3515
3516                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3517                 }
3518         } else {
3519                 gboolean pass_vtable, pass_mrgctx;
3520                 MonoInst *rgctx_arg = NULL;
3521
3522                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3523                 g_assert (!pass_mrgctx);
3524
3525                 if (pass_vtable) {
3526                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3527
3528                         g_assert (vtable);
3529                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3530                 }
3531
3532                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3533         }
3534 }
3535
3536 static MonoInst*
3537 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3538 {
3539         MonoInst *add;
3540         int obj_reg;
3541         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3542         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3543         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3544         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3545
3546         obj_reg = sp [0]->dreg;
3547         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3549
3550         /* FIXME: generics */
3551         g_assert (klass->rank == 0);
3552
3553         // Check rank == 0
3554         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3555         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3556
3557         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3558         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3559
3560         if (context_used) {
3561                 MonoInst *element_class;
3562
3563                 /* This assertion is from the unboxcast insn */
3564                 g_assert (klass->rank == 0);
3565
3566                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3567                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3568
3569                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3570                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3571         } else {
3572                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3573                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3574                 mini_reset_cast_details (cfg);
3575         }
3576
3577         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3578         MONO_ADD_INS (cfg->cbb, add);
3579         add->type = STACK_MP;
3580         add->klass = klass;
3581
3582         return add;
3583 }
3584
3585 static MonoInst*
3586 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3587 {
3588         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3589         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3590         MonoInst *ins;
3591         int dreg, addr_reg;
3592
3593         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3594
3595         /* obj */
3596         args [0] = obj;
3597
3598         /* klass */
3599         args [1] = klass_inst;
3600
3601         /* CASTCLASS */
3602         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3603
3604         NEW_BBLOCK (cfg, is_ref_bb);
3605         NEW_BBLOCK (cfg, is_nullable_bb);
3606         NEW_BBLOCK (cfg, end_bb);
3607         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3608         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3609         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3610
3611         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3612         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3613
3614         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3615         addr_reg = alloc_dreg (cfg, STACK_MP);
3616
3617         /* Non-ref case */
3618         /* UNBOX */
3619         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3620         MONO_ADD_INS (cfg->cbb, addr);
3621
3622         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3623
3624         /* Ref case */
3625         MONO_START_BB (cfg, is_ref_bb);
3626
3627         /* Save the ref to a temporary */
3628         dreg = alloc_ireg (cfg);
3629         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3630         addr->dreg = addr_reg;
3631         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3632         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3633
3634         /* Nullable case */
3635         MONO_START_BB (cfg, is_nullable_bb);
3636
3637         {
3638                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3639                 MonoInst *unbox_call;
3640                 MonoMethodSignature *unbox_sig;
3641
3642                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3643                 unbox_sig->ret = &klass->byval_arg;
3644                 unbox_sig->param_count = 1;
3645                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3646
3647                 if (cfg->llvm_only)
3648                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3649                 else
3650                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3651
3652                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3653                 addr->dreg = addr_reg;
3654         }
3655
3656         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3657
3658         /* End */
3659         MONO_START_BB (cfg, end_bb);
3660
3661         /* LDOBJ */
3662         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3663
3664         return ins;
3665 }
3666
3667 /*
3668  * Returns NULL and set the cfg exception on error.
3669  */
3670 static MonoInst*
3671 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3672 {
3673         MonoInst *iargs [2];
3674         void *alloc_ftn;
3675
3676         if (context_used) {
3677                 MonoInst *data;
3678                 MonoRgctxInfoType rgctx_info;
3679                 MonoInst *iargs [2];
3680                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3681
3682                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3683
3684                 if (cfg->opt & MONO_OPT_SHARED)
3685                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3686                 else
3687                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3688                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3689
3690                 if (cfg->opt & MONO_OPT_SHARED) {
3691                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3692                         iargs [1] = data;
3693                         alloc_ftn = ves_icall_object_new;
3694                 } else {
3695                         iargs [0] = data;
3696                         alloc_ftn = ves_icall_object_new_specific;
3697                 }
3698
3699                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3700                         if (known_instance_size) {
3701                                 int size = mono_class_instance_size (klass);
3702                                 if (size < sizeof (MonoObject))
3703                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3704
3705                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3706                         }
3707                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3708                 }
3709
3710                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3711         }
3712
3713         if (cfg->opt & MONO_OPT_SHARED) {
3714                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3715                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3716
3717                 alloc_ftn = ves_icall_object_new;
3718         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3719                 /* This happens often in argument checking code, eg. throw new FooException... */
3720                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3721                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3722                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3723         } else {
3724                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3725                 MonoMethod *managed_alloc = NULL;
3726                 gboolean pass_lw;
3727
3728                 if (!vtable) {
3729                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3730                         cfg->exception_ptr = klass;
3731                         return NULL;
3732                 }
3733
3734                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3735
3736                 if (managed_alloc) {
3737                         int size = mono_class_instance_size (klass);
3738                         if (size < sizeof (MonoObject))
3739                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3740
3741                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3742                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3743                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3744                 }
3745                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3746                 if (pass_lw) {
3747                         guint32 lw = vtable->klass->instance_size;
3748                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3749                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3750                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3751                 }
3752                 else {
3753                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3754                 }
3755         }
3756
3757         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3758 }
3759
3760 /*
3761  * Returns NULL and set the cfg exception on error.
3762  */
3763 static MonoInst*
3764 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3765 {
3766         MonoInst *alloc, *ins;
3767
3768         if (mono_class_is_nullable (klass)) {
3769                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3770
3771                 if (context_used) {
3772                         if (cfg->llvm_only && cfg->gsharedvt) {
3773                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3774                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3775                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3776                         } else {
3777                                 /* FIXME: What if the class is shared?  We might not
3778                                    have to get the method address from the RGCTX. */
3779                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3780                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3781                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3782
3783                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3784                         }
3785                 } else {
3786                         gboolean pass_vtable, pass_mrgctx;
3787                         MonoInst *rgctx_arg = NULL;
3788
3789                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3790                         g_assert (!pass_mrgctx);
3791
3792                         if (pass_vtable) {
3793                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3794
3795                                 g_assert (vtable);
3796                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3797                         }
3798
3799                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3800                 }
3801         }
3802
3803         if (mini_is_gsharedvt_klass (klass)) {
3804                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3805                 MonoInst *res, *is_ref, *src_var, *addr;
3806                 int dreg;
3807
3808                 dreg = alloc_ireg (cfg);
3809
3810                 NEW_BBLOCK (cfg, is_ref_bb);
3811                 NEW_BBLOCK (cfg, is_nullable_bb);
3812                 NEW_BBLOCK (cfg, end_bb);
3813                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3814                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3816
3817                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3818                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3819
3820                 /* Non-ref case */
3821                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3822                 if (!alloc)
3823                         return NULL;
3824                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3825                 ins->opcode = OP_STOREV_MEMBASE;
3826
3827                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3828                 res->type = STACK_OBJ;
3829                 res->klass = klass;
3830                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3831
3832                 /* Ref case */
3833                 MONO_START_BB (cfg, is_ref_bb);
3834
3835                 /* val is a vtype, so has to load the value manually */
3836                 src_var = get_vreg_to_inst (cfg, val->dreg);
3837                 if (!src_var)
3838                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3839                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3840                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3841                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3842
3843                 /* Nullable case */
3844                 MONO_START_BB (cfg, is_nullable_bb);
3845
3846                 {
3847                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3848                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3849                         MonoInst *box_call;
3850                         MonoMethodSignature *box_sig;
3851
3852                         /*
3853                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3854                          * construct that method at JIT time, so have to do things by hand.
3855                          */
3856                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3857                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3858                         box_sig->param_count = 1;
3859                         box_sig->params [0] = &klass->byval_arg;
3860
3861                         if (cfg->llvm_only)
3862                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3863                         else
3864                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3865                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3866                         res->type = STACK_OBJ;
3867                         res->klass = klass;
3868                 }
3869
3870                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3871
3872                 MONO_START_BB (cfg, end_bb);
3873
3874                 return res;
3875         } else {
3876                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3877                 if (!alloc)
3878                         return NULL;
3879
3880                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3881                 return alloc;
3882         }
3883 }
3884
3885 static GHashTable* direct_icall_type_hash;
3886
3887 static gboolean
3888 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3889 {
3890         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3891         if (!direct_icalls_enabled (cfg))
3892                 return FALSE;
3893
3894         /*
3895          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3896          * Whitelist a few icalls for now.
3897          */
3898         if (!direct_icall_type_hash) {
3899                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3900
3901                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3902                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3903                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3904                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3905                 mono_memory_barrier ();
3906                 direct_icall_type_hash = h;
3907         }
3908
3909         if (cmethod->klass == mono_defaults.math_class)
3910                 return TRUE;
3911         /* No locking needed */
3912         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3913                 return TRUE;
3914         return FALSE;
3915 }
3916
3917 static gboolean
3918 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3919 {
3920         if (cmethod->klass == mono_defaults.systemtype_class) {
3921                 if (!strcmp (cmethod->name, "GetType"))
3922                         return TRUE;
3923         }
3924         return FALSE;
3925 }
3926
3927 static G_GNUC_UNUSED MonoInst*
3928 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3929 {
3930         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3931         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3932         gboolean is_i4;
3933
3934         switch (enum_type->type) {
3935         case MONO_TYPE_I8:
3936         case MONO_TYPE_U8:
3937 #if SIZEOF_REGISTER == 8
3938         case MONO_TYPE_I:
3939         case MONO_TYPE_U:
3940 #endif
3941                 is_i4 = FALSE;
3942                 break;
3943         default:
3944                 is_i4 = TRUE;
3945                 break;
3946         }
3947
3948         {
3949                 MonoInst *load, *and_, *cmp, *ceq;
3950                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3951                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3952                 int dest_reg = alloc_ireg (cfg);
3953
3954                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3955                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3956                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3957                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3958
3959                 ceq->type = STACK_I4;
3960
3961                 if (!is_i4) {
3962                         load = mono_decompose_opcode (cfg, load);
3963                         and_ = mono_decompose_opcode (cfg, and_);
3964                         cmp = mono_decompose_opcode (cfg, cmp);
3965                         ceq = mono_decompose_opcode (cfg, ceq);
3966                 }
3967
3968                 return ceq;
3969         }
3970 }
3971
3972 /*
3973  * Returns NULL and set the cfg exception on error.
3974  */
3975 static G_GNUC_UNUSED MonoInst*
3976 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3977 {
3978         MonoInst *ptr;
3979         int dreg;
3980         gpointer trampoline;
3981         MonoInst *obj, *method_ins, *tramp_ins;
3982         MonoDomain *domain;
3983         guint8 **code_slot;
3984
3985         if (virtual_ && !cfg->llvm_only) {
3986                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3987                 g_assert (invoke);
3988
3989                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3990                         return NULL;
3991         }
3992
3993         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3994         if (!obj)
3995                 return NULL;
3996
3997         /* Inline the contents of mono_delegate_ctor */
3998
3999         /* Set target field */
4000         /* Optimize away setting of NULL target */
4001         if (!MONO_INS_IS_PCONST_NULL (target)) {
4002                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4003                 if (cfg->gen_write_barriers) {
4004                         dreg = alloc_preg (cfg);
4005                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4006                         mini_emit_write_barrier (cfg, ptr, target);
4007                 }
4008         }
4009
4010         /* Set method field */
4011         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4012         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4013
4014         /*
4015          * To avoid looking up the compiled code belonging to the target method
4016          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4017          * store it, and we fill it after the method has been compiled.
4018          */
4019         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4020                 MonoInst *code_slot_ins;
4021
4022                 if (context_used) {
4023                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4024                 } else {
4025                         domain = mono_domain_get ();
4026                         mono_domain_lock (domain);
4027                         if (!domain_jit_info (domain)->method_code_hash)
4028                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4029                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4030                         if (!code_slot) {
4031                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4032                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4033                         }
4034                         mono_domain_unlock (domain);
4035
4036                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4037                 }
4038                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4039         }
4040
4041         if (cfg->llvm_only) {
4042                 MonoInst *args [16];
4043
4044                 if (virtual_) {
4045                         args [0] = obj;
4046                         args [1] = target;
4047                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4048                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4049                 } else {
4050                         args [0] = obj;
4051                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4052                 }
4053
4054                 return obj;
4055         }
4056
4057         if (cfg->compile_aot) {
4058                 MonoDelegateClassMethodPair *del_tramp;
4059
4060                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4061                 del_tramp->klass = klass;
4062                 del_tramp->method = context_used ? NULL : method;
4063                 del_tramp->is_virtual = virtual_;
4064                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4065         } else {
4066                 if (virtual_)
4067                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4068                 else
4069                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4070                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4071         }
4072
4073         /* Set invoke_impl field */
4074         if (virtual_) {
4075                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4076         } else {
4077                 dreg = alloc_preg (cfg);
4078                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4079                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4080
4081                 dreg = alloc_preg (cfg);
4082                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4083                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4084         }
4085
4086         dreg = alloc_preg (cfg);
4087         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4088         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4089
4090         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4091
4092         return obj;
4093 }
4094
4095 static MonoInst*
4096 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4097 {
4098         MonoJitICallInfo *info;
4099
4100         /* Need to register the icall so it gets an icall wrapper */
4101         info = mono_get_array_new_va_icall (rank);
4102
4103         cfg->flags |= MONO_CFG_HAS_VARARGS;
4104
4105         /* mono_array_new_va () needs a vararg calling convention */
4106         cfg->exception_message = g_strdup ("array-new");
4107         cfg->disable_llvm = TRUE;
4108
4109         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4110         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4111 }
4112
4113 /*
4114  * handle_constrained_gsharedvt_call:
4115  *
4116  *   Handle constrained calls where the receiver is a gsharedvt type.
4117  * Return the instruction representing the call. Set the cfg exception on failure.
4118  */
4119 static MonoInst*
4120 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4121                                                                    gboolean *ref_emit_widen)
4122 {
4123         MonoInst *ins = NULL;
4124         gboolean emit_widen = *ref_emit_widen;
4125
4126         /*
4127          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4128          * This is hard to do with the current call code, since we would have to emit a branch and two different calls. So instead, we
4129          * pack the arguments into an array, and do the rest of the work in in an icall.
4130          */
4131         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4132                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4133                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
4134                 MonoInst *args [16];
4135
4136                 /*
4137                  * This case handles calls to
4138                  * - object:ToString()/Equals()/GetHashCode(),
4139                  * - System.IComparable<T>:CompareTo()
4140                  * - System.IEquatable<T>:Equals ()
4141                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4142                  */
4143
4144                 args [0] = sp [0];
4145                 if (mono_method_check_context_used (cmethod))
4146                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4147                 else
4148                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4149                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4150
4151                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4152                 if (fsig->hasthis && fsig->param_count) {
4153                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4154                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4155                         ins->dreg = alloc_preg (cfg);
4156                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4157                         MONO_ADD_INS (cfg->cbb, ins);
4158                         args [4] = ins;
4159
4160                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4161                                 int addr_reg, deref_arg_reg;
4162
4163                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4164                                 deref_arg_reg = alloc_preg (cfg);
4165                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4166                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4167
4168                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4169                                 addr_reg = ins->dreg;
4170                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4171                         } else {
4172                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4173                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4174                         }
4175                 } else {
4176                         EMIT_NEW_ICONST (cfg, args [3], 0);
4177                         EMIT_NEW_ICONST (cfg, args [4], 0);
4178                 }
4179                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4180                 emit_widen = FALSE;
4181
4182                 if (mini_is_gsharedvt_type (fsig->ret)) {
4183                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4184                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4185                         MonoInst *add;
4186
4187                         /* Unbox */
4188                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4189                         MONO_ADD_INS (cfg->cbb, add);
4190                         /* Load value */
4191                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4192                         MONO_ADD_INS (cfg->cbb, ins);
4193                         /* ins represents the call result */
4194                 }
4195         } else {
4196                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4197         }
4198
4199         *ref_emit_widen = emit_widen;
4200
4201         return ins;
4202
4203  exception_exit:
4204         return NULL;
4205 }
4206
4207 static void
4208 mono_emit_load_got_addr (MonoCompile *cfg)
4209 {
4210         MonoInst *getaddr, *dummy_use;
4211
4212         if (!cfg->got_var || cfg->got_var_allocated)
4213                 return;
4214
4215         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4216         getaddr->cil_code = cfg->header->code;
4217         getaddr->dreg = cfg->got_var->dreg;
4218
4219         /* Add it to the start of the first bblock */
4220         if (cfg->bb_entry->code) {
4221                 getaddr->next = cfg->bb_entry->code;
4222                 cfg->bb_entry->code = getaddr;
4223         }
4224         else
4225                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4226
4227         cfg->got_var_allocated = TRUE;
4228
4229         /*
4230          * Add a dummy use to keep the got_var alive, since real uses might
4231          * only be generated by the back ends.
4232          * Add it to end_bblock, so the variable's lifetime covers the whole
4233          * method.
4234          * It would be better to make the usage of the got var explicit in all
4235          * cases when the backend needs it (i.e. calls, throw etc.), so this
4236          * wouldn't be needed.
4237          */
4238         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4239         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4240 }
4241
4242 static int inline_limit;
4243 static gboolean inline_limit_inited;
4244
4245 static gboolean
4246 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4247 {
4248         MonoMethodHeaderSummary header;
4249         MonoVTable *vtable;
4250 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4251         MonoMethodSignature *sig = mono_method_signature (method);
4252         int i;
4253 #endif
4254
4255         if (cfg->disable_inline)
4256                 return FALSE;
4257         if (cfg->gsharedvt)
4258                 return FALSE;
4259
4260         if (cfg->inline_depth > 10)
4261                 return FALSE;
4262
4263         if (!mono_method_get_header_summary (method, &header))
4264                 return FALSE;
4265
4266         /*runtime, icall and pinvoke are checked by summary call*/
4267         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4268             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4269             (mono_class_is_marshalbyref (method->klass)) ||
4270             header.has_clauses)
4271                 return FALSE;
4272
4273         /* also consider num_locals? */
4274         /* Do the size check early to avoid creating vtables */
4275         if (!inline_limit_inited) {
4276                 char *inlinelimit;
4277                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4278                         inline_limit = atoi (inlinelimit);
4279                         g_free (inlinelimit);
4280                 } else
4281                         inline_limit = INLINE_LENGTH_LIMIT;
4282                 inline_limit_inited = TRUE;
4283         }
4284         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4285                 return FALSE;
4286
4287         /*
4288          * if we can initialize the class of the method right away, we do,
4289          * otherwise we don't allow inlining if the class needs initialization,
4290          * since it would mean inserting a call to mono_runtime_class_init()
4291          * inside the inlined code
4292          */
4293         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4294                 return FALSE;
4295
4296         if (!(cfg->opt & MONO_OPT_SHARED)) {
4297                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4298                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4299                         if (method->klass->has_cctor) {
4300                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4301                                 if (!vtable)
4302                                         return FALSE;
4303                                 if (!cfg->compile_aot) {
4304                                         MonoError error;
4305                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4306                                                 mono_error_cleanup (&error);
4307                                                 return FALSE;
4308                                         }
4309                                 }
4310                         }
4311                 } else if (mono_class_is_before_field_init (method->klass)) {
4312                         if (cfg->run_cctors && method->klass->has_cctor) {
4313                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4314                                 if (!method->klass->runtime_info)
4315                                         /* No vtable created yet */
4316                                         return FALSE;
4317                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4318                                 if (!vtable)
4319                                         return FALSE;
4320                                 /* This makes so that inline cannot trigger */
4321                                 /* .cctors: too many apps depend on them */
4322                                 /* running with a specific order... */
4323                                 if (! vtable->initialized)
4324                                         return FALSE;
4325                                 MonoError error;
4326                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4327                                         mono_error_cleanup (&error);
4328                                         return FALSE;
4329                                 }
4330                         }
4331                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4332                         if (!method->klass->runtime_info)
4333                                 /* No vtable created yet */
4334                                 return FALSE;
4335                         vtable = mono_class_vtable (cfg->domain, method->klass);
4336                         if (!vtable)
4337                                 return FALSE;
4338                         if (!vtable->initialized)
4339                                 return FALSE;
4340                 }
4341         } else {
4342                 /*
4343                  * If we're compiling for shared code
4344                  * the cctor will need to be run at aot method load time, for example,
4345                  * or at the end of the compilation of the inlining method.
4346                  */
4347                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4348                         return FALSE;
4349         }
4350
4351 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4352         if (mono_arch_is_soft_float ()) {
4353                 /* FIXME: */
4354                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4355                         return FALSE;
4356                 for (i = 0; i < sig->param_count; ++i)
4357                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4358                                 return FALSE;
4359         }
4360 #endif
4361
4362         if (g_list_find (cfg->dont_inline, method))
4363                 return FALSE;
4364
4365         return TRUE;
4366 }
4367
4368 static gboolean
4369 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4370 {
4371         if (!cfg->compile_aot) {
4372                 g_assert (vtable);
4373                 if (vtable->initialized)
4374                         return FALSE;
4375         }
4376
4377         if (mono_class_is_before_field_init (klass)) {
4378                 if (cfg->method == method)
4379                         return FALSE;
4380         }
4381
4382         if (!mono_class_needs_cctor_run (klass, method))
4383                 return FALSE;
4384
4385         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4386                 /* The initialization is already done before the method is called */
4387                 return FALSE;
4388
4389         return TRUE;
4390 }
4391
4392 MonoInst*
4393 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4394 {
4395         MonoInst *ins;
4396         guint32 size;
4397         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4398         int context_used;
4399
4400         if (mini_is_gsharedvt_variable_klass (klass)) {
4401                 size = -1;
4402         } else {
4403                 mono_class_init (klass);
4404                 size = mono_class_array_element_size (klass);
4405         }
4406
4407         mult_reg = alloc_preg (cfg);
4408         array_reg = arr->dreg;
4409         index_reg = index->dreg;
4410
4411 #if SIZEOF_REGISTER == 8
4412         /* The array reg is 64 bits but the index reg is only 32 */
4413         if (COMPILE_LLVM (cfg)) {
4414                 /*
4415                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4416                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4417                  * of OP_X86_LEA for llvm.
4418                  */
4419                 index2_reg = index_reg;
4420         } else {
4421                 index2_reg = alloc_preg (cfg);
4422                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4423         }
4424 #else
4425         if (index->type == STACK_I8) {
4426                 index2_reg = alloc_preg (cfg);
4427                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4428         } else {
4429                 index2_reg = index_reg;
4430         }
4431 #endif
4432
4433         if (bcheck)
4434                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4435
4436 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4437         if (size == 1 || size == 2 || size == 4 || size == 8) {
4438                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4439
4440                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4441                 ins->klass = mono_class_get_element_class (klass);
4442                 ins->type = STACK_MP;
4443
4444                 return ins;
4445         }
4446 #endif
4447
4448         add_reg = alloc_ireg_mp (cfg);
4449
4450         if (size == -1) {
4451                 MonoInst *rgctx_ins;
4452
4453                 /* gsharedvt */
4454                 g_assert (cfg->gshared);
4455                 context_used = mini_class_check_context_used (cfg, klass);
4456                 g_assert (context_used);
4457                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4458                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4459         } else {
4460                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4461         }
4462         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4463         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4464         ins->klass = mono_class_get_element_class (klass);
4465         ins->type = STACK_MP;
4466         MONO_ADD_INS (cfg->cbb, ins);
4467
4468         return ins;
4469 }
4470
4471 static MonoInst*
4472 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4473 {
4474         int bounds_reg = alloc_preg (cfg);
4475         int add_reg = alloc_ireg_mp (cfg);
4476         int mult_reg = alloc_preg (cfg);
4477         int mult2_reg = alloc_preg (cfg);
4478         int low1_reg = alloc_preg (cfg);
4479         int low2_reg = alloc_preg (cfg);
4480         int high1_reg = alloc_preg (cfg);
4481         int high2_reg = alloc_preg (cfg);
4482         int realidx1_reg = alloc_preg (cfg);
4483         int realidx2_reg = alloc_preg (cfg);
4484         int sum_reg = alloc_preg (cfg);
4485         int index1, index2, tmpreg;
4486         MonoInst *ins;
4487         guint32 size;
4488
4489         mono_class_init (klass);
4490         size = mono_class_array_element_size (klass);
4491
4492         index1 = index_ins1->dreg;
4493         index2 = index_ins2->dreg;
4494
4495 #if SIZEOF_REGISTER == 8
4496         /* The array reg is 64 bits but the index reg is only 32 */
4497         if (COMPILE_LLVM (cfg)) {
4498                 /* Not needed */
4499         } else {
4500                 tmpreg = alloc_preg (cfg);
4501                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4502                 index1 = tmpreg;
4503                 tmpreg = alloc_preg (cfg);
4504                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4505                 index2 = tmpreg;
4506         }
4507 #else
4508         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4509         tmpreg = -1;
4510 #endif
4511
4512         /* range checking */
4513         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4514                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4515
4516         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4517                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4518         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4519         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4520                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4521         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4522         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4523
4524         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4525                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4526         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4527         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4528                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4529         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4530         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4531
4532         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4533         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4534         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4535         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4536         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4537
4538         ins->type = STACK_MP;
4539         ins->klass = klass;
4540         MONO_ADD_INS (cfg->cbb, ins);
4541
4542         return ins;
4543 }
4544
4545 static MonoInst*
4546 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4547 {
4548         int rank;
4549         MonoInst *addr;
4550         MonoMethod *addr_method;
4551         int element_size;
4552         MonoClass *eclass = cmethod->klass->element_class;
4553
4554         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4555
4556         if (rank == 1)
4557                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4558
4559         /* emit_ldelema_2 depends on OP_LMUL */
4560         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4561                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4562         }
4563
4564         if (mini_is_gsharedvt_variable_klass (eclass))
4565                 element_size = 0;
4566         else
4567                 element_size = mono_class_array_element_size (eclass);
4568         addr_method = mono_marshal_get_array_address (rank, element_size);
4569         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4570
4571         return addr;
4572 }
4573
4574 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4575 static MonoInst*
4576 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4577 {
4578         MonoInst *addr, *store, *load;
4579         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4580
4581         /* the bounds check is already done by the callers */
4582         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4583         if (is_set) {
4584                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4585                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4586                 if (mini_type_is_reference (&eklass->byval_arg))
4587                         mini_emit_write_barrier (cfg, addr, load);
4588         } else {
4589                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4590                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4591         }
4592         return store;
4593 }
4594
4595
4596 static gboolean
4597 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4598 {
4599         return mini_type_is_reference (&klass->byval_arg);
4600 }
4601
4602 static MonoInst*
4603 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4604 {
4605         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4606                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4607                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4608                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4609                 MonoInst *iargs [3];
4610
4611                 if (!helper->slot)
4612                         mono_class_setup_vtable (obj_array);
4613                 g_assert (helper->slot);
4614
4615                 if (sp [0]->type != STACK_OBJ)
4616                         return NULL;
4617                 if (sp [2]->type != STACK_OBJ)
4618                         return NULL;
4619
4620                 iargs [2] = sp [2];
4621                 iargs [1] = sp [1];
4622                 iargs [0] = sp [0];
4623
4624                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4625         } else {
4626                 MonoInst *ins;
4627
4628                 if (mini_is_gsharedvt_variable_klass (klass)) {
4629                         MonoInst *addr;
4630
4631                         // FIXME-VT: OP_ICONST optimization
4632                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4633                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4634                         ins->opcode = OP_STOREV_MEMBASE;
4635                 } else if (sp [1]->opcode == OP_ICONST) {
4636                         int array_reg = sp [0]->dreg;
4637                         int index_reg = sp [1]->dreg;
4638                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4639
4640                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4641                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4642
4643                         if (safety_checks)
4644                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4645                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4646                 } else {
4647                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4648                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4649                         if (generic_class_is_reference_type (cfg, klass))
4650                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4651                 }
4652                 return ins;
4653         }
4654 }
4655
4656 static MonoInst*
4657 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4658 {
4659         MonoClass *eklass;
4660
4661         if (is_set)
4662                 eklass = mono_class_from_mono_type (fsig->params [2]);
4663         else
4664                 eklass = mono_class_from_mono_type (fsig->ret);
4665
4666         if (is_set) {
4667                 return emit_array_store (cfg, eklass, args, FALSE);
4668         } else {
4669                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4670                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4671                 return ins;
4672         }
4673 }
4674
4675 static gboolean
4676 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4677 {
4678         uint32_t align;
4679         int param_size, return_size;
4680
4681         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4682         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4683
4684         if (cfg->verbose_level > 3)
4685                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4686
4687         //Don't allow mixing reference types with value types
4688         if (param_klass->valuetype != return_klass->valuetype) {
4689                 if (cfg->verbose_level > 3)
4690                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4691                 return FALSE;
4692         }
4693
4694         if (!param_klass->valuetype) {
4695                 if (cfg->verbose_level > 3)
4696                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4697                 return TRUE;
4698         }
4699
4700         //That are blitable
4701         if (param_klass->has_references || return_klass->has_references)
4702                 return FALSE;
4703
4704         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4705         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4706                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4707                         if (cfg->verbose_level > 3)
4708                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4709                 return FALSE;
4710         }
4711
4712         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4713                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4714                 if (cfg->verbose_level > 3)
4715                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4716                 return FALSE;
4717         }
4718
4719         param_size = mono_class_value_size (param_klass, &align);
4720         return_size = mono_class_value_size (return_klass, &align);
4721
4722         //We can do it if sizes match
4723         if (param_size == return_size) {
4724                 if (cfg->verbose_level > 3)
4725                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4726                 return TRUE;
4727         }
4728
4729         //No simple way to handle struct if sizes don't match
4730         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4731                 if (cfg->verbose_level > 3)
4732                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4733                 return FALSE;
4734         }
4735
4736         /*
4737          * Same reg size category.
4738          * A quick note on why we don't require widening here.
4739          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4740          *
4741          * Since the source value comes from a function argument, the JIT will already have
4742          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4743          */
4744         if (param_size <= 4 && return_size <= 4) {
4745                 if (cfg->verbose_level > 3)
4746                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4747                 return TRUE;
4748         }
4749
4750         return FALSE;
4751 }
4752
4753 static MonoInst*
4754 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4755 {
4756         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4757         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4758
4759         if (mini_is_gsharedvt_variable_type (fsig->ret))
4760                 return NULL;
4761
4762         //Valuetypes that are semantically equivalent or numbers than can be widened to
4763         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4764                 return args [0];
4765
4766         //Arrays of valuetypes that are semantically equivalent
4767         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4768                 return args [0];
4769
4770         return NULL;
4771 }
4772
4773 static MonoInst*
4774 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4775 {
4776 #ifdef MONO_ARCH_SIMD_INTRINSICS
4777         MonoInst *ins = NULL;
4778
4779         if (cfg->opt & MONO_OPT_SIMD) {
4780                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4781                 if (ins)
4782                         return ins;
4783         }
4784 #endif
4785
4786         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4787 }
4788
4789 MonoInst*
4790 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4791 {
4792         MonoInst *ins = NULL;
4793         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4794         MONO_ADD_INS (cfg->cbb, ins);
4795         ins->backend.memory_barrier_kind = kind;
4796
4797         return ins;
4798 }
4799
4800 static MonoInst*
4801 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4802 {
4803         MonoInst *ins = NULL;
4804         int opcode = 0;
4805
4806         /* The LLVM backend supports these intrinsics */
4807         if (cmethod->klass == mono_defaults.math_class) {
4808                 if (strcmp (cmethod->name, "Sin") == 0) {
4809                         opcode = OP_SIN;
4810                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4811                         opcode = OP_COS;
4812                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4813                         opcode = OP_SQRT;
4814                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4815                         opcode = OP_ABS;
4816                 }
4817
4818                 if (opcode && fsig->param_count == 1) {
4819                         MONO_INST_NEW (cfg, ins, opcode);
4820                         ins->type = STACK_R8;
4821                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4822                         ins->sreg1 = args [0]->dreg;
4823                         MONO_ADD_INS (cfg->cbb, ins);
4824                 }
4825
4826                 opcode = 0;
4827                 if (cfg->opt & MONO_OPT_CMOV) {
4828                         if (strcmp (cmethod->name, "Min") == 0) {
4829                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4830                                         opcode = OP_IMIN;
4831                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4832                                         opcode = OP_IMIN_UN;
4833                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4834                                         opcode = OP_LMIN;
4835                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4836                                         opcode = OP_LMIN_UN;
4837                         } else if (strcmp (cmethod->name, "Max") == 0) {
4838                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4839                                         opcode = OP_IMAX;
4840                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4841                                         opcode = OP_IMAX_UN;
4842                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4843                                         opcode = OP_LMAX;
4844                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4845                                         opcode = OP_LMAX_UN;
4846                         }
4847                 }
4848
4849                 if (opcode && fsig->param_count == 2) {
4850                         MONO_INST_NEW (cfg, ins, opcode);
4851                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4852                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4853                         ins->sreg1 = args [0]->dreg;
4854                         ins->sreg2 = args [1]->dreg;
4855                         MONO_ADD_INS (cfg->cbb, ins);
4856                 }
4857         }
4858
4859         return ins;
4860 }
4861
4862 static MonoInst*
4863 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4864 {
4865         if (cmethod->klass == mono_defaults.array_class) {
4866                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4867                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4868                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4869                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4870                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4871                         return emit_array_unsafe_mov (cfg, fsig, args);
4872         }
4873
4874         return NULL;
4875 }
4876
4877
4878 static gboolean
4879 mono_type_is_native_blittable (MonoType *t)
4880 {
4881         if (MONO_TYPE_IS_REFERENCE (t))
4882                 return FALSE;
4883
4884         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4885                 return TRUE;
4886
4887         MonoClass *klass = mono_class_from_mono_type (t);
4888
4889         //MonoClass::blitable depends on mono_class_setup_fields being done.
4890         mono_class_setup_fields (klass);
4891         if (!klass->blittable)
4892                 return FALSE;
4893
4894         // If the native marshal size is different we can't convert PtrToStructure to a type load
4895         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4896                 return FALSE;
4897
4898         return TRUE;
4899 }
4900
4901
4902 static MonoInst*
4903 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4904 {
4905         MonoInst *ins = NULL;
4906         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4907
4908         if (cmethod->klass == mono_defaults.string_class) {
4909                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4910                         int dreg = alloc_ireg (cfg);
4911                         int index_reg = alloc_preg (cfg);
4912                         int add_reg = alloc_preg (cfg);
4913
4914 #if SIZEOF_REGISTER == 8
4915                         if (COMPILE_LLVM (cfg)) {
4916                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4917                         } else {
4918                                 /* The array reg is 64 bits but the index reg is only 32 */
4919                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4920                         }
4921 #else
4922                         index_reg = args [1]->dreg;
4923 #endif
4924                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4925
4926 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4927                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4928                         add_reg = ins->dreg;
4929                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4930                                                                    add_reg, 0);
4931 #else
4932                         int mult_reg = alloc_preg (cfg);
4933                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4934                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4935                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4936                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4937 #endif
4938                         type_from_op (cfg, ins, NULL, NULL);
4939                         return ins;
4940                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4941                         int dreg = alloc_ireg (cfg);
4942                         /* Decompose later to allow more optimizations */
4943                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4944                         ins->type = STACK_I4;
4945                         ins->flags |= MONO_INST_FAULT;
4946                         cfg->cbb->has_array_access = TRUE;
4947                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4948
4949                         return ins;
4950                 } else
4951                         return NULL;
4952         } else if (cmethod->klass == mono_defaults.object_class) {
4953                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4954                         int dreg = alloc_ireg_ref (cfg);
4955                         int vt_reg = alloc_preg (cfg);
4956                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4957                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4958                         type_from_op (cfg, ins, NULL, NULL);
4959
4960                         return ins;
4961                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4962                         int dreg = alloc_ireg (cfg);
4963                         int t1 = alloc_ireg (cfg);
4964
4965                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4966                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4967                         ins->type = STACK_I4;
4968
4969                         return ins;
4970                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4971                         MONO_INST_NEW (cfg, ins, OP_NOP);
4972                         MONO_ADD_INS (cfg->cbb, ins);
4973                         return ins;
4974                 } else
4975                         return NULL;
4976         } else if (cmethod->klass == mono_defaults.array_class) {
4977                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4978                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4979                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4980                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4981
4982 #ifndef MONO_BIG_ARRAYS
4983                 /*
4984                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4985                  * Array methods.
4986                  */
4987                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4988                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4989                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4990                         int dreg = alloc_ireg (cfg);
4991                         int bounds_reg = alloc_ireg_mp (cfg);
4992                         MonoBasicBlock *end_bb, *szarray_bb;
4993                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4994
4995                         NEW_BBLOCK (cfg, end_bb);
4996                         NEW_BBLOCK (cfg, szarray_bb);
4997
4998                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4999                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5000                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5001                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5002                         /* Non-szarray case */
5003                         if (get_length)
5004                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5005                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5006                         else
5007                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5008                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5009                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5010                         MONO_START_BB (cfg, szarray_bb);
5011                         /* Szarray case */
5012                         if (get_length)
5013                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5014                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5015                         else
5016                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5017                         MONO_START_BB (cfg, end_bb);
5018
5019                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5020                         ins->type = STACK_I4;
5021
5022                         return ins;
5023                 }
5024 #endif
5025
5026                 if (cmethod->name [0] != 'g')
5027                         return NULL;
5028
5029                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5030                         int dreg = alloc_ireg (cfg);
5031                         int vtable_reg = alloc_preg (cfg);
5032                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5033                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5034                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5035                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5036                         type_from_op (cfg, ins, NULL, NULL);
5037
5038                         return ins;
5039                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5040                         int dreg = alloc_ireg (cfg);
5041
5042                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5043                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5044                         type_from_op (cfg, ins, NULL, NULL);
5045
5046                         return ins;
5047                 } else
5048                         return NULL;
5049         } else if (cmethod->klass == runtime_helpers_class) {
5050                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5051                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5052                         return ins;
5053                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5054                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5055                         g_assert (ctx);
5056                         g_assert (ctx->method_inst);
5057                         g_assert (ctx->method_inst->type_argc == 1);
5058                         MonoType *arg_type = ctx->method_inst->type_argv [0];
5059                         MonoType *t;
5060                         MonoClass *klass;
5061
5062                         ins = NULL;
5063
5064                         /* Resolve the argument class as possible so we can handle common cases fast */
5065                         t = mini_get_underlying_type (arg_type);
5066                         klass = mono_class_from_mono_type (t);
5067                         mono_class_init (klass);
5068                         if (MONO_TYPE_IS_REFERENCE (t))
5069                                 EMIT_NEW_ICONST (cfg, ins, 1);
5070                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5071                                 EMIT_NEW_ICONST (cfg, ins, 0);
5072                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5073                                 EMIT_NEW_ICONST (cfg, ins, 1);
5074                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5075                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5076                         else {
5077                                 g_assert (cfg->gshared);
5078
5079                                 /* Have to use the original argument class here */
5080                                 MonoClass *arg_class = mono_class_from_mono_type (arg_type);
5081                                 int context_used = mini_class_check_context_used (cfg, arg_class);
5082
5083                                 /* This returns 1 or 2 */
5084                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, arg_class, MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5085                                 int dreg = alloc_ireg (cfg);
5086                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5087                         }
5088
5089                         return ins;
5090                 } else
5091                         return NULL;
5092         } else if (cmethod->klass == mono_defaults.monitor_class) {
5093                 gboolean is_enter = FALSE;
5094                 gboolean is_v4 = FALSE;
5095
5096                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5097                         is_enter = TRUE;
5098                         is_v4 = TRUE;
5099                 }
5100                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5101                         is_enter = TRUE;
5102
5103                 if (is_enter) {
5104                         /*
5105                          * To make async stack traces work, icalls which can block should have a wrapper.
5106                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5107                          */
5108                         MonoBasicBlock *end_bb;
5109
5110                         NEW_BBLOCK (cfg, end_bb);
5111
5112                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5113                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5114                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5115                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5116                         MONO_START_BB (cfg, end_bb);
5117                         return ins;
5118                 }
5119         } else if (cmethod->klass == mono_defaults.thread_class) {
5120                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5121                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5122                         MONO_ADD_INS (cfg->cbb, ins);
5123                         return ins;
5124                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5125                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5126                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5127                         guint32 opcode = 0;
5128                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5129
5130                         if (fsig->params [0]->type == MONO_TYPE_I1)
5131                                 opcode = OP_LOADI1_MEMBASE;
5132                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5133                                 opcode = OP_LOADU1_MEMBASE;
5134                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5135                                 opcode = OP_LOADI2_MEMBASE;
5136                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5137                                 opcode = OP_LOADU2_MEMBASE;
5138                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5139                                 opcode = OP_LOADI4_MEMBASE;
5140                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5141                                 opcode = OP_LOADU4_MEMBASE;
5142                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5143                                 opcode = OP_LOADI8_MEMBASE;
5144                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5145                                 opcode = OP_LOADR4_MEMBASE;
5146                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5147                                 opcode = OP_LOADR8_MEMBASE;
5148                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5149                                 opcode = OP_LOAD_MEMBASE;
5150
5151                         if (opcode) {
5152                                 MONO_INST_NEW (cfg, ins, opcode);
5153                                 ins->inst_basereg = args [0]->dreg;
5154                                 ins->inst_offset = 0;
5155                                 MONO_ADD_INS (cfg->cbb, ins);
5156
5157                                 switch (fsig->params [0]->type) {
5158                                 case MONO_TYPE_I1:
5159                                 case MONO_TYPE_U1:
5160                                 case MONO_TYPE_I2:
5161                                 case MONO_TYPE_U2:
5162                                 case MONO_TYPE_I4:
5163                                 case MONO_TYPE_U4:
5164                                         ins->dreg = mono_alloc_ireg (cfg);
5165                                         ins->type = STACK_I4;
5166                                         break;
5167                                 case MONO_TYPE_I8:
5168                                 case MONO_TYPE_U8:
5169                                         ins->dreg = mono_alloc_lreg (cfg);
5170                                         ins->type = STACK_I8;
5171                                         break;
5172                                 case MONO_TYPE_I:
5173                                 case MONO_TYPE_U:
5174                                         ins->dreg = mono_alloc_ireg (cfg);
5175 #if SIZEOF_REGISTER == 8
5176                                         ins->type = STACK_I8;
5177 #else
5178                                         ins->type = STACK_I4;
5179 #endif
5180                                         break;
5181                                 case MONO_TYPE_R4:
5182                                 case MONO_TYPE_R8:
5183                                         ins->dreg = mono_alloc_freg (cfg);
5184                                         ins->type = STACK_R8;
5185                                         break;
5186                                 default:
5187                                         g_assert (mini_type_is_reference (fsig->params [0]));
5188                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5189                                         ins->type = STACK_OBJ;
5190                                         break;
5191                                 }
5192
5193                                 if (opcode == OP_LOADI8_MEMBASE)
5194                                         ins = mono_decompose_opcode (cfg, ins);
5195
5196                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5197
5198                                 return ins;
5199                         }
5200                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5201                         guint32 opcode = 0;
5202                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5203
5204                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5205                                 opcode = OP_STOREI1_MEMBASE_REG;
5206                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5207                                 opcode = OP_STOREI2_MEMBASE_REG;
5208                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5209                                 opcode = OP_STOREI4_MEMBASE_REG;
5210                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5211                                 opcode = OP_STOREI8_MEMBASE_REG;
5212                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5213                                 opcode = OP_STORER4_MEMBASE_REG;
5214                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5215                                 opcode = OP_STORER8_MEMBASE_REG;
5216                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5217                                 opcode = OP_STORE_MEMBASE_REG;
5218
5219                         if (opcode) {
5220                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5221
5222                                 MONO_INST_NEW (cfg, ins, opcode);
5223                                 ins->sreg1 = args [1]->dreg;
5224                                 ins->inst_destbasereg = args [0]->dreg;
5225                                 ins->inst_offset = 0;
5226                                 MONO_ADD_INS (cfg->cbb, ins);
5227
5228                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5229                                         ins = mono_decompose_opcode (cfg, ins);
5230
5231                                 return ins;
5232                         }
5233                 }
5234         } else if (cmethod->klass->image == mono_defaults.corlib &&
5235                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5236                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5237                 ins = NULL;
5238
5239 #if SIZEOF_REGISTER == 8
5240                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5241                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5242                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5243                                 ins->dreg = mono_alloc_preg (cfg);
5244                                 ins->sreg1 = args [0]->dreg;
5245                                 ins->type = STACK_I8;
5246                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5247                                 MONO_ADD_INS (cfg->cbb, ins);
5248                         } else {
5249                                 MonoInst *load_ins;
5250
5251                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5252
5253                                 /* 64 bit reads are already atomic */
5254                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5255                                 load_ins->dreg = mono_alloc_preg (cfg);
5256                                 load_ins->inst_basereg = args [0]->dreg;
5257                                 load_ins->inst_offset = 0;
5258                                 load_ins->type = STACK_I8;
5259                                 MONO_ADD_INS (cfg->cbb, load_ins);
5260
5261                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5262
5263                                 ins = load_ins;
5264                         }
5265                 }
5266 #endif
5267
5268                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5269                         MonoInst *ins_iconst;
5270                         guint32 opcode = 0;
5271
5272                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5273                                 opcode = OP_ATOMIC_ADD_I4;
5274                                 cfg->has_atomic_add_i4 = TRUE;
5275                         }
5276 #if SIZEOF_REGISTER == 8
5277                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5278                                 opcode = OP_ATOMIC_ADD_I8;
5279 #endif
5280                         if (opcode) {
5281                                 if (!mono_arch_opcode_supported (opcode))
5282                                         return NULL;
5283                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5284                                 ins_iconst->inst_c0 = 1;
5285                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5286                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5287
5288                                 MONO_INST_NEW (cfg, ins, opcode);
5289                                 ins->dreg = mono_alloc_ireg (cfg);
5290                                 ins->inst_basereg = args [0]->dreg;
5291                                 ins->inst_offset = 0;
5292                                 ins->sreg2 = ins_iconst->dreg;
5293                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5294                                 MONO_ADD_INS (cfg->cbb, ins);
5295                         }
5296                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5297                         MonoInst *ins_iconst;
5298                         guint32 opcode = 0;
5299
5300                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5301                                 opcode = OP_ATOMIC_ADD_I4;
5302                                 cfg->has_atomic_add_i4 = TRUE;
5303                         }
5304 #if SIZEOF_REGISTER == 8
5305                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5306                                 opcode = OP_ATOMIC_ADD_I8;
5307 #endif
5308                         if (opcode) {
5309                                 if (!mono_arch_opcode_supported (opcode))
5310                                         return NULL;
5311                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5312                                 ins_iconst->inst_c0 = -1;
5313                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5314                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5315
5316                                 MONO_INST_NEW (cfg, ins, opcode);
5317                                 ins->dreg = mono_alloc_ireg (cfg);
5318                                 ins->inst_basereg = args [0]->dreg;
5319                                 ins->inst_offset = 0;
5320                                 ins->sreg2 = ins_iconst->dreg;
5321                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5322                                 MONO_ADD_INS (cfg->cbb, ins);
5323                         }
5324                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5325                         guint32 opcode = 0;
5326
5327                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5328                                 opcode = OP_ATOMIC_ADD_I4;
5329                                 cfg->has_atomic_add_i4 = TRUE;
5330                         }
5331 #if SIZEOF_REGISTER == 8
5332                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5333                                 opcode = OP_ATOMIC_ADD_I8;
5334 #endif
5335                         if (opcode) {
5336                                 if (!mono_arch_opcode_supported (opcode))
5337                                         return NULL;
5338                                 MONO_INST_NEW (cfg, ins, opcode);
5339                                 ins->dreg = mono_alloc_ireg (cfg);
5340                                 ins->inst_basereg = args [0]->dreg;
5341                                 ins->inst_offset = 0;
5342                                 ins->sreg2 = args [1]->dreg;
5343                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5344                                 MONO_ADD_INS (cfg->cbb, ins);
5345                         }
5346                 }
5347                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5348                         MonoInst *f2i = NULL, *i2f;
5349                         guint32 opcode, f2i_opcode, i2f_opcode;
5350                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5351                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5352
5353                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5354                             fsig->params [0]->type == MONO_TYPE_R4) {
5355                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5356                                 f2i_opcode = OP_MOVE_F_TO_I4;
5357                                 i2f_opcode = OP_MOVE_I4_TO_F;
5358                                 cfg->has_atomic_exchange_i4 = TRUE;
5359                         }
5360 #if SIZEOF_REGISTER == 8
5361                         else if (is_ref ||
5362                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5363                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5364                                  fsig->params [0]->type == MONO_TYPE_I) {
5365                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5366                                 f2i_opcode = OP_MOVE_F_TO_I8;
5367                                 i2f_opcode = OP_MOVE_I8_TO_F;
5368                         }
5369 #else
5370                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5371                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5372                                 cfg->has_atomic_exchange_i4 = TRUE;
5373                         }
5374 #endif
5375                         else
5376                                 return NULL;
5377
5378                         if (!mono_arch_opcode_supported (opcode))
5379                                 return NULL;
5380
5381                         if (is_float) {
5382                                 /* TODO: Decompose these opcodes instead of bailing here. */
5383                                 if (COMPILE_SOFT_FLOAT (cfg))
5384                                         return NULL;
5385
5386                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5387                                 f2i->dreg = mono_alloc_ireg (cfg);
5388                                 f2i->sreg1 = args [1]->dreg;
5389                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5390                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5391                                 MONO_ADD_INS (cfg->cbb, f2i);
5392                         }
5393
5394                         MONO_INST_NEW (cfg, ins, opcode);
5395                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5396                         ins->inst_basereg = args [0]->dreg;
5397                         ins->inst_offset = 0;
5398                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5399                         MONO_ADD_INS (cfg->cbb, ins);
5400
5401                         switch (fsig->params [0]->type) {
5402                         case MONO_TYPE_I4:
5403                                 ins->type = STACK_I4;
5404                                 break;
5405                         case MONO_TYPE_I8:
5406                                 ins->type = STACK_I8;
5407                                 break;
5408                         case MONO_TYPE_I:
5409 #if SIZEOF_REGISTER == 8
5410                                 ins->type = STACK_I8;
5411 #else
5412                                 ins->type = STACK_I4;
5413 #endif
5414                                 break;
5415                         case MONO_TYPE_R4:
5416                         case MONO_TYPE_R8:
5417                                 ins->type = STACK_R8;
5418                                 break;
5419                         default:
5420                                 g_assert (mini_type_is_reference (fsig->params [0]));
5421                                 ins->type = STACK_OBJ;
5422                                 break;
5423                         }
5424
5425                         if (is_float) {
5426                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5427                                 i2f->dreg = mono_alloc_freg (cfg);
5428                                 i2f->sreg1 = ins->dreg;
5429                                 i2f->type = STACK_R8;
5430                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5431                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5432                                 MONO_ADD_INS (cfg->cbb, i2f);
5433
5434                                 ins = i2f;
5435                         }
5436
5437                         if (cfg->gen_write_barriers && is_ref)
5438                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5439                 }
5440                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5441                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5442                         guint32 opcode, f2i_opcode, i2f_opcode;
5443                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5444                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5445
5446                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5447                             fsig->params [1]->type == MONO_TYPE_R4) {
5448                                 opcode = OP_ATOMIC_CAS_I4;
5449                                 f2i_opcode = OP_MOVE_F_TO_I4;
5450                                 i2f_opcode = OP_MOVE_I4_TO_F;
5451                                 cfg->has_atomic_cas_i4 = TRUE;
5452                         }
5453 #if SIZEOF_REGISTER == 8
5454                         else if (is_ref ||
5455                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5456                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5457                                  fsig->params [1]->type == MONO_TYPE_I) {
5458                                 opcode = OP_ATOMIC_CAS_I8;
5459                                 f2i_opcode = OP_MOVE_F_TO_I8;
5460                                 i2f_opcode = OP_MOVE_I8_TO_F;
5461                         }
5462 #else
5463                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5464                                 opcode = OP_ATOMIC_CAS_I4;
5465                                 cfg->has_atomic_cas_i4 = TRUE;
5466                         }
5467 #endif
5468                         else
5469                                 return NULL;
5470
5471                         if (!mono_arch_opcode_supported (opcode))
5472                                 return NULL;
5473
5474                         if (is_float) {
5475                                 /* TODO: Decompose these opcodes instead of bailing here. */
5476                                 if (COMPILE_SOFT_FLOAT (cfg))
5477                                         return NULL;
5478
5479                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5480                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5481                                 f2i_new->sreg1 = args [1]->dreg;
5482                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5483                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5484                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5485
5486                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5487                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5488                                 f2i_cmp->sreg1 = args [2]->dreg;
5489                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5490                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5491                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5492                         }
5493
5494                         MONO_INST_NEW (cfg, ins, opcode);
5495                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5496                         ins->sreg1 = args [0]->dreg;
5497                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5498                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5499                         MONO_ADD_INS (cfg->cbb, ins);
5500
5501                         switch (fsig->params [1]->type) {
5502                         case MONO_TYPE_I4:
5503                                 ins->type = STACK_I4;
5504                                 break;
5505                         case MONO_TYPE_I8:
5506                                 ins->type = STACK_I8;
5507                                 break;
5508                         case MONO_TYPE_I:
5509 #if SIZEOF_REGISTER == 8
5510                                 ins->type = STACK_I8;
5511 #else
5512                                 ins->type = STACK_I4;
5513 #endif
5514                                 break;
5515                         case MONO_TYPE_R4:
5516                                 ins->type = cfg->r4_stack_type;
5517                                 break;
5518                         case MONO_TYPE_R8:
5519                                 ins->type = STACK_R8;
5520                                 break;
5521                         default:
5522                                 g_assert (mini_type_is_reference (fsig->params [1]));
5523                                 ins->type = STACK_OBJ;
5524                                 break;
5525                         }
5526
5527                         if (is_float) {
5528                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5529                                 i2f->dreg = mono_alloc_freg (cfg);
5530                                 i2f->sreg1 = ins->dreg;
5531                                 i2f->type = STACK_R8;
5532                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5533                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5534                                 MONO_ADD_INS (cfg->cbb, i2f);
5535
5536                                 ins = i2f;
5537                         }
5538
5539                         if (cfg->gen_write_barriers && is_ref)
5540                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5541                 }
5542                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5543                          fsig->params [1]->type == MONO_TYPE_I4) {
5544                         MonoInst *cmp, *ceq;
5545
5546                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5547                                 return NULL;
5548
5549                         /* int32 r = CAS (location, value, comparand); */
5550                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5551                         ins->dreg = alloc_ireg (cfg);
5552                         ins->sreg1 = args [0]->dreg;
5553                         ins->sreg2 = args [1]->dreg;
5554                         ins->sreg3 = args [2]->dreg;
5555                         ins->type = STACK_I4;
5556                         MONO_ADD_INS (cfg->cbb, ins);
5557
5558                         /* bool result = r == comparand; */
5559                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5560                         cmp->sreg1 = ins->dreg;
5561                         cmp->sreg2 = args [2]->dreg;
5562                         cmp->type = STACK_I4;
5563                         MONO_ADD_INS (cfg->cbb, cmp);
5564
5565                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5566                         ceq->dreg = alloc_ireg (cfg);
5567                         ceq->type = STACK_I4;
5568                         MONO_ADD_INS (cfg->cbb, ceq);
5569
5570                         /* *success = result; */
5571                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5572
5573                         cfg->has_atomic_cas_i4 = TRUE;
5574                 }
5575                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5576                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5577
5578                 if (ins)
5579                         return ins;
5580         } else if (cmethod->klass->image == mono_defaults.corlib &&
5581                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5582                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5583                 ins = NULL;
5584
5585                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5586                         guint32 opcode = 0;
5587                         MonoType *t = fsig->params [0];
5588                         gboolean is_ref;
5589                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5590
5591                         g_assert (t->byref);
5592                         /* t is a byref type, so the reference check is more complicated */
5593                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5594                         if (t->type == MONO_TYPE_I1)
5595                                 opcode = OP_ATOMIC_LOAD_I1;
5596                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5597                                 opcode = OP_ATOMIC_LOAD_U1;
5598                         else if (t->type == MONO_TYPE_I2)
5599                                 opcode = OP_ATOMIC_LOAD_I2;
5600                         else if (t->type == MONO_TYPE_U2)
5601                                 opcode = OP_ATOMIC_LOAD_U2;
5602                         else if (t->type == MONO_TYPE_I4)
5603                                 opcode = OP_ATOMIC_LOAD_I4;
5604                         else if (t->type == MONO_TYPE_U4)
5605                                 opcode = OP_ATOMIC_LOAD_U4;
5606                         else if (t->type == MONO_TYPE_R4)
5607                                 opcode = OP_ATOMIC_LOAD_R4;
5608                         else if (t->type == MONO_TYPE_R8)
5609                                 opcode = OP_ATOMIC_LOAD_R8;
5610 #if SIZEOF_REGISTER == 8
5611                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5612                                 opcode = OP_ATOMIC_LOAD_I8;
5613                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5614                                 opcode = OP_ATOMIC_LOAD_U8;
5615 #else
5616                         else if (t->type == MONO_TYPE_I)
5617                                 opcode = OP_ATOMIC_LOAD_I4;
5618                         else if (is_ref || t->type == MONO_TYPE_U)
5619                                 opcode = OP_ATOMIC_LOAD_U4;
5620 #endif
5621
5622                         if (opcode) {
5623                                 if (!mono_arch_opcode_supported (opcode))
5624                                         return NULL;
5625
5626                                 MONO_INST_NEW (cfg, ins, opcode);
5627                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5628                                 ins->sreg1 = args [0]->dreg;
5629                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5630                                 MONO_ADD_INS (cfg->cbb, ins);
5631
5632                                 switch (t->type) {
5633                                 case MONO_TYPE_BOOLEAN:
5634                                 case MONO_TYPE_I1:
5635                                 case MONO_TYPE_U1:
5636                                 case MONO_TYPE_I2:
5637                                 case MONO_TYPE_U2:
5638                                 case MONO_TYPE_I4:
5639                                 case MONO_TYPE_U4:
5640                                         ins->type = STACK_I4;
5641                                         break;
5642                                 case MONO_TYPE_I8:
5643                                 case MONO_TYPE_U8:
5644                                         ins->type = STACK_I8;
5645                                         break;
5646                                 case MONO_TYPE_I:
5647                                 case MONO_TYPE_U:
5648 #if SIZEOF_REGISTER == 8
5649                                         ins->type = STACK_I8;
5650 #else
5651                                         ins->type = STACK_I4;
5652 #endif
5653                                         break;
5654                                 case MONO_TYPE_R4:
5655                                         ins->type = cfg->r4_stack_type;
5656                                         break;
5657                                 case MONO_TYPE_R8:
5658                                         ins->type = STACK_R8;
5659                                         break;
5660                                 default:
5661                                         g_assert (is_ref);
5662                                         ins->type = STACK_OBJ;
5663                                         break;
5664                                 }
5665                         }
5666                 }
5667
5668                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5669                         guint32 opcode = 0;
5670                         MonoType *t = fsig->params [0];
5671                         gboolean is_ref;
5672
5673                         g_assert (t->byref);
5674                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5675                         if (t->type == MONO_TYPE_I1)
5676                                 opcode = OP_ATOMIC_STORE_I1;
5677                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5678                                 opcode = OP_ATOMIC_STORE_U1;
5679                         else if (t->type == MONO_TYPE_I2)
5680                                 opcode = OP_ATOMIC_STORE_I2;
5681                         else if (t->type == MONO_TYPE_U2)
5682                                 opcode = OP_ATOMIC_STORE_U2;
5683                         else if (t->type == MONO_TYPE_I4)
5684                                 opcode = OP_ATOMIC_STORE_I4;
5685                         else if (t->type == MONO_TYPE_U4)
5686                                 opcode = OP_ATOMIC_STORE_U4;
5687                         else if (t->type == MONO_TYPE_R4)
5688                                 opcode = OP_ATOMIC_STORE_R4;
5689                         else if (t->type == MONO_TYPE_R8)
5690                                 opcode = OP_ATOMIC_STORE_R8;
5691 #if SIZEOF_REGISTER == 8
5692                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5693                                 opcode = OP_ATOMIC_STORE_I8;
5694                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5695                                 opcode = OP_ATOMIC_STORE_U8;
5696 #else
5697                         else if (t->type == MONO_TYPE_I)
5698                                 opcode = OP_ATOMIC_STORE_I4;
5699                         else if (is_ref || t->type == MONO_TYPE_U)
5700                                 opcode = OP_ATOMIC_STORE_U4;
5701 #endif
5702
5703                         if (opcode) {
5704                                 if (!mono_arch_opcode_supported (opcode))
5705                                         return NULL;
5706
5707                                 MONO_INST_NEW (cfg, ins, opcode);
5708                                 ins->dreg = args [0]->dreg;
5709                                 ins->sreg1 = args [1]->dreg;
5710                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5711                                 MONO_ADD_INS (cfg->cbb, ins);
5712
5713                                 if (cfg->gen_write_barriers && is_ref)
5714                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5715                         }
5716                 }
5717
5718                 if (ins)
5719                         return ins;
5720         } else if (cmethod->klass->image == mono_defaults.corlib &&
5721                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5722                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5723                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5724                         if (mini_should_insert_breakpoint (cfg->method)) {
5725                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5726                         } else {
5727                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5728                                 MONO_ADD_INS (cfg->cbb, ins);
5729                         }
5730                         return ins;
5731                 }
5732         } else if (cmethod->klass->image == mono_defaults.corlib &&
5733                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5734                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5735                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5736 #ifdef TARGET_WIN32
5737                         EMIT_NEW_ICONST (cfg, ins, 1);
5738 #else
5739                         EMIT_NEW_ICONST (cfg, ins, 0);
5740 #endif
5741                 }
5742         } else if (cmethod->klass->image == mono_defaults.corlib &&
5743                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5744                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5745                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5746                         /* No stack walks are currently available, so implement this as an intrinsic */
5747                         MonoInst *assembly_ins;
5748
5749                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5750                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5751                         return ins;
5752                 }
5753         } else if (cmethod->klass->image == mono_defaults.corlib &&
5754                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5755                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5756                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5757                         /* No stack walks are currently available, so implement this as an intrinsic */
5758                         MonoInst *method_ins;
5759                         MonoMethod *declaring = cfg->method;
5760
5761                         /* This returns the declaring generic method */
5762                         if (declaring->is_inflated)
5763                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5764                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5765                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5766                         cfg->no_inline = TRUE;
5767                         if (cfg->method != cfg->current_method)
5768                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5769                         return ins;
5770                 }
5771         } else if (cmethod->klass == mono_defaults.math_class) {
5772                 /*
5773                  * There is general branchless code for Min/Max, but it does not work for
5774                  * all inputs:
5775                  * http://everything2.com/?node_id=1051618
5776                  */
5777         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5778                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5779                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5780                 ins->dreg = alloc_preg (cfg);
5781                 ins->type = STACK_I4;
5782                 MONO_ADD_INS (cfg->cbb, ins);
5783                 return ins;
5784         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5785                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5786                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5787                                 !strcmp (cmethod->klass->name, "Selector")) ||
5788                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5789                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5790                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5791                                 !strcmp (cmethod->klass->name, "Selector"))
5792                            ) {
5793                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5794                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5795                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5796                     cfg->compile_aot) {
5797                         MonoInst *pi;
5798                         MonoJumpInfoToken *ji;
5799                         char *s;
5800
5801                         if (args [0]->opcode == OP_GOT_ENTRY) {
5802                                 pi = (MonoInst *)args [0]->inst_p1;
5803                                 g_assert (pi->opcode == OP_PATCH_INFO);
5804                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5805                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5806                         } else {
5807                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5808                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5809                         }
5810
5811                         NULLIFY_INS (args [0]);
5812
5813                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5814                         return_val_if_nok (&cfg->error, NULL);
5815
5816                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5817                         ins->dreg = mono_alloc_ireg (cfg);
5818                         // FIXME: Leaks
5819                         ins->inst_p0 = s;
5820                         MONO_ADD_INS (cfg->cbb, ins);
5821                         return ins;
5822                 }
5823         } else if (cmethod->klass->image == mono_defaults.corlib &&
5824                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5825                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5826                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5827                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5828                                 cmethod->is_inflated &&
5829                                 fsig->param_count == 1 &&
5830                                 !mini_method_check_context_used (cfg, cmethod)) {
5831
5832                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5833                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5834                         if (mono_type_is_native_blittable (arg0))
5835                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5836                 }
5837         }
5838
5839 #ifdef MONO_ARCH_SIMD_INTRINSICS
5840         if (cfg->opt & MONO_OPT_SIMD) {
5841                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5842                 if (ins)
5843                         return ins;
5844         }
5845 #endif
5846
5847         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5848         if (ins)
5849                 return ins;
5850
5851         if (COMPILE_LLVM (cfg)) {
5852                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5853                 if (ins)
5854                         return ins;
5855         }
5856
5857         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5858 }
5859
5860 /*
5861  * This entry point could be used later for arbitrary method
5862  * redirection.
5863  */
5864 inline static MonoInst*
5865 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5866                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5867 {
5868         if (method->klass == mono_defaults.string_class) {
5869                 /* managed string allocation support */
5870                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(cfg->opt & MONO_OPT_SHARED)) {
5871                         MonoInst *iargs [2];
5872                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5873                         MonoMethod *managed_alloc = NULL;
5874
5875                         g_assert (vtable); /*Should not fail since it System.String*/
5876 #ifndef MONO_CROSS_COMPILE
5877                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5878 #endif
5879                         if (!managed_alloc)
5880                                 return NULL;
5881                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5882                         iargs [1] = args [0];
5883                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5884                 }
5885         }
5886         return NULL;
5887 }
5888
5889 static void
5890 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5891 {
5892         MonoInst *store, *temp;
5893         int i;
5894
5895         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5896                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5897
5898                 /*
5899                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5900                  * would be different than the MonoInst's used to represent arguments, and
5901                  * the ldelema implementation can't deal with that.
5902                  * Solution: When ldelema is used on an inline argument, create a var for
5903                  * it, emit ldelema on that var, and emit the saving code below in
5904                  * inline_method () if needed.
5905                  */
5906                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5907                 cfg->args [i] = temp;
5908                 /* This uses cfg->args [i] which is set by the preceeding line */
5909                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5910                 store->cil_code = sp [0]->cil_code;
5911                 sp++;
5912         }
5913 }
5914
5915 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5916 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5917
5918 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5919 static gboolean
5920 check_inline_called_method_name_limit (MonoMethod *called_method)
5921 {
5922         int strncmp_result;
5923         static const char *limit = NULL;
5924
5925         if (limit == NULL) {
5926                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5927
5928                 if (limit_string != NULL)
5929                         limit = limit_string;
5930                 else
5931                         limit = "";
5932         }
5933
5934         if (limit [0] != '\0') {
5935                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5936
5937                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5938                 g_free (called_method_name);
5939
5940                 //return (strncmp_result <= 0);
5941                 return (strncmp_result == 0);
5942         } else {
5943                 return TRUE;
5944         }
5945 }
5946 #endif
5947
5948 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5949 static gboolean
5950 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5951 {
5952         int strncmp_result;
5953         static const char *limit = NULL;
5954
5955         if (limit == NULL) {
5956                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5957                 if (limit_string != NULL) {
5958                         limit = limit_string;
5959                 } else {
5960                         limit = "";
5961                 }
5962         }
5963
5964         if (limit [0] != '\0') {
5965                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5966
5967                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5968                 g_free (caller_method_name);
5969
5970                 //return (strncmp_result <= 0);
5971                 return (strncmp_result == 0);
5972         } else {
5973                 return TRUE;
5974         }
5975 }
5976 #endif
5977
5978 static void
5979 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5980 {
5981         static double r8_0 = 0.0;
5982         static float r4_0 = 0.0;
5983         MonoInst *ins;
5984         int t;
5985
5986         rtype = mini_get_underlying_type (rtype);
5987         t = rtype->type;
5988
5989         if (rtype->byref) {
5990                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5991         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5992                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5993         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5994                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5995         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5996                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5997                 ins->type = STACK_R4;
5998                 ins->inst_p0 = (void*)&r4_0;
5999                 ins->dreg = dreg;
6000                 MONO_ADD_INS (cfg->cbb, ins);
6001         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6002                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6003                 ins->type = STACK_R8;
6004                 ins->inst_p0 = (void*)&r8_0;
6005                 ins->dreg = dreg;
6006                 MONO_ADD_INS (cfg->cbb, ins);
6007         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6008                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6009                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6010         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6011                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6012         } else {
6013                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6014         }
6015 }
6016
6017 static void
6018 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6019 {
6020         int t;
6021
6022         rtype = mini_get_underlying_type (rtype);
6023         t = rtype->type;
6024
6025         if (rtype->byref) {
6026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6027         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6029         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6030                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6031         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6032                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6033         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6034                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6035         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6036                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6037                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6038         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6039                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6040         } else {
6041                 emit_init_rvar (cfg, dreg, rtype);
6042         }
6043 }
6044
6045 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6046 static void
6047 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6048 {
6049         MonoInst *var = cfg->locals [local];
6050         if (COMPILE_SOFT_FLOAT (cfg)) {
6051                 MonoInst *store;
6052                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6053                 emit_init_rvar (cfg, reg, type);
6054                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6055         } else {
6056                 if (init)
6057                         emit_init_rvar (cfg, var->dreg, type);
6058                 else
6059                         emit_dummy_init_rvar (cfg, var->dreg, type);
6060         }
6061 }
6062
6063 int
6064 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6065 {
6066         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6067 }
6068
6069 /*
6070  * inline_method:
6071  *
6072  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6073  */
6074 static int
6075 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6076                guchar *ip, guint real_offset, gboolean inline_always)
6077 {
6078         MonoError error;
6079         MonoInst *ins, *rvar = NULL;
6080         MonoMethodHeader *cheader;
6081         MonoBasicBlock *ebblock, *sbblock;
6082         int i, costs;
6083         MonoMethod *prev_inlined_method;
6084         MonoInst **prev_locals, **prev_args;
6085         MonoType **prev_arg_types;
6086         guint prev_real_offset;
6087         GHashTable *prev_cbb_hash;
6088         MonoBasicBlock **prev_cil_offset_to_bb;
6089         MonoBasicBlock *prev_cbb;
6090         const unsigned char *prev_ip;
6091         unsigned char *prev_cil_start;
6092         guint32 prev_cil_offset_to_bb_len;
6093         MonoMethod *prev_current_method;
6094         MonoGenericContext *prev_generic_context;
6095         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6096
6097         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6098
6099 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6100         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6101                 return 0;
6102 #endif
6103 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6104         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6105                 return 0;
6106 #endif
6107
6108         if (!fsig)
6109                 fsig = mono_method_signature (cmethod);
6110
6111         if (cfg->verbose_level > 2)
6112                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6113
6114         if (!cmethod->inline_info) {
6115                 cfg->stat_inlineable_methods++;
6116                 cmethod->inline_info = 1;
6117         }
6118
6119         /* allocate local variables */
6120         cheader = mono_method_get_header_checked (cmethod, &error);
6121         if (!cheader) {
6122                 if (inline_always) {
6123                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6124                         mono_error_move (&cfg->error, &error);
6125                 } else {
6126                         mono_error_cleanup (&error);
6127                 }
6128                 return 0;
6129         }
6130
6131         /*Must verify before creating locals as it can cause the JIT to assert.*/
6132         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6133                 mono_metadata_free_mh (cheader);
6134                 return 0;
6135         }
6136
6137         /* allocate space to store the return value */
6138         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6139                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6140         }
6141
6142         prev_locals = cfg->locals;
6143         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6144         for (i = 0; i < cheader->num_locals; ++i)
6145                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6146
6147         /* allocate start and end blocks */
6148         /* This is needed so if the inline is aborted, we can clean up */
6149         NEW_BBLOCK (cfg, sbblock);
6150         sbblock->real_offset = real_offset;
6151
6152         NEW_BBLOCK (cfg, ebblock);
6153         ebblock->block_num = cfg->num_bblocks++;
6154         ebblock->real_offset = real_offset;
6155
6156         prev_args = cfg->args;
6157         prev_arg_types = cfg->arg_types;
6158         prev_inlined_method = cfg->inlined_method;
6159         cfg->inlined_method = cmethod;
6160         cfg->ret_var_set = FALSE;
6161         cfg->inline_depth ++;
6162         prev_real_offset = cfg->real_offset;
6163         prev_cbb_hash = cfg->cbb_hash;
6164         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6165         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6166         prev_cil_start = cfg->cil_start;
6167         prev_ip = cfg->ip;
6168         prev_cbb = cfg->cbb;
6169         prev_current_method = cfg->current_method;
6170         prev_generic_context = cfg->generic_context;
6171         prev_ret_var_set = cfg->ret_var_set;
6172         prev_disable_inline = cfg->disable_inline;
6173
6174         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6175                 virtual_ = TRUE;
6176
6177         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6178
6179         ret_var_set = cfg->ret_var_set;
6180
6181         cfg->inlined_method = prev_inlined_method;
6182         cfg->real_offset = prev_real_offset;
6183         cfg->cbb_hash = prev_cbb_hash;
6184         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6185         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6186         cfg->cil_start = prev_cil_start;
6187         cfg->ip = prev_ip;
6188         cfg->locals = prev_locals;
6189         cfg->args = prev_args;
6190         cfg->arg_types = prev_arg_types;
6191         cfg->current_method = prev_current_method;
6192         cfg->generic_context = prev_generic_context;
6193         cfg->ret_var_set = prev_ret_var_set;
6194         cfg->disable_inline = prev_disable_inline;
6195         cfg->inline_depth --;
6196
6197         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6198                 if (cfg->verbose_level > 2)
6199                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6200
6201                 cfg->stat_inlined_methods++;
6202
6203                 /* always add some code to avoid block split failures */
6204                 MONO_INST_NEW (cfg, ins, OP_NOP);
6205                 MONO_ADD_INS (prev_cbb, ins);
6206
6207                 prev_cbb->next_bb = sbblock;
6208                 link_bblock (cfg, prev_cbb, sbblock);
6209
6210                 /*
6211                  * Get rid of the begin and end bblocks if possible to aid local
6212                  * optimizations.
6213                  */
6214                 if (prev_cbb->out_count == 1)
6215                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6216
6217                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6218                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6219
6220                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6221                         MonoBasicBlock *prev = ebblock->in_bb [0];
6222
6223                         if (prev->next_bb == ebblock) {
6224                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6225                                 cfg->cbb = prev;
6226                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6227                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6228                                         cfg->cbb = prev_cbb;
6229                                 }
6230                         } else {
6231                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6232                                 cfg->cbb = ebblock;
6233                         }
6234                 } else {
6235                         /*
6236                          * Its possible that the rvar is set in some prev bblock, but not in others.
6237                          * (#1835).
6238                          */
6239                         if (rvar) {
6240                                 MonoBasicBlock *bb;
6241
6242                                 for (i = 0; i < ebblock->in_count; ++i) {
6243                                         bb = ebblock->in_bb [i];
6244
6245                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6246                                                 cfg->cbb = bb;
6247
6248                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6249                                         }
6250                                 }
6251                         }
6252
6253                         cfg->cbb = ebblock;
6254                 }
6255
6256                 if (rvar) {
6257                         /*
6258                          * If the inlined method contains only a throw, then the ret var is not
6259                          * set, so set it to a dummy value.
6260                          */
6261                         if (!ret_var_set)
6262                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6263
6264                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6265                         *sp++ = ins;
6266                 }
6267                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6268                 return costs + 1;
6269         } else {
6270                 if (cfg->verbose_level > 2)
6271                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6272                 cfg->exception_type = MONO_EXCEPTION_NONE;
6273
6274                 /* This gets rid of the newly added bblocks */
6275                 cfg->cbb = prev_cbb;
6276         }
6277         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6278         return 0;
6279 }
6280
6281 /*
6282  * Some of these comments may well be out-of-date.
6283  * Design decisions: we do a single pass over the IL code (and we do bblock
6284  * splitting/merging in the few cases when it's required: a back jump to an IL
6285  * address that was not already seen as bblock starting point).
6286  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6287  * Complex operations are decomposed in simpler ones right away. We need to let the
6288  * arch-specific code peek and poke inside this process somehow (except when the
6289  * optimizations can take advantage of the full semantic info of coarse opcodes).
6290  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6291  * MonoInst->opcode initially is the IL opcode or some simplification of that
6292  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6293  * opcode with value bigger than OP_LAST.
6294  * At this point the IR can be handed over to an interpreter, a dumb code generator
6295  * or to the optimizing code generator that will translate it to SSA form.
6296  *
6297  * Profiling directed optimizations.
6298  * We may compile by default with few or no optimizations and instrument the code
6299  * or the user may indicate what methods to optimize the most either in a config file
6300  * or through repeated runs where the compiler applies offline the optimizations to
6301  * each method and then decides if it was worth it.
6302  */
6303
6304 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6305 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6306 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6307 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6308 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6309 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6310 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6311 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6312
6313 /* offset from br.s -> br like opcodes */
6314 #define BIG_BRANCH_OFFSET 13
6315
6316 static gboolean
6317 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6318 {
6319         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6320
6321         return b == NULL || b == bb;
6322 }
6323
6324 static int
6325 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6326 {
6327         unsigned char *ip = start;
6328         unsigned char *target;
6329         int i;
6330         guint cli_addr;
6331         MonoBasicBlock *bblock;
6332         const MonoOpcode *opcode;
6333
6334         while (ip < end) {
6335                 cli_addr = ip - start;
6336                 i = mono_opcode_value ((const guint8 **)&ip, end);
6337                 if (i < 0)
6338                         UNVERIFIED;
6339                 opcode = &mono_opcodes [i];
6340                 switch (opcode->argument) {
6341                 case MonoInlineNone:
6342                         ip++;
6343                         break;
6344                 case MonoInlineString:
6345                 case MonoInlineType:
6346                 case MonoInlineField:
6347                 case MonoInlineMethod:
6348                 case MonoInlineTok:
6349                 case MonoInlineSig:
6350                 case MonoShortInlineR:
6351                 case MonoInlineI:
6352                         ip += 5;
6353                         break;
6354                 case MonoInlineVar:
6355                         ip += 3;
6356                         break;
6357                 case MonoShortInlineVar:
6358                 case MonoShortInlineI:
6359                         ip += 2;
6360                         break;
6361                 case MonoShortInlineBrTarget:
6362                         target = start + cli_addr + 2 + (signed char)ip [1];
6363                         GET_BBLOCK (cfg, bblock, target);
6364                         ip += 2;
6365                         if (ip < end)
6366                                 GET_BBLOCK (cfg, bblock, ip);
6367                         break;
6368                 case MonoInlineBrTarget:
6369                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6370                         GET_BBLOCK (cfg, bblock, target);
6371                         ip += 5;
6372                         if (ip < end)
6373                                 GET_BBLOCK (cfg, bblock, ip);
6374                         break;
6375                 case MonoInlineSwitch: {
6376                         guint32 n = read32 (ip + 1);
6377                         guint32 j;
6378                         ip += 5;
6379                         cli_addr += 5 + 4 * n;
6380                         target = start + cli_addr;
6381                         GET_BBLOCK (cfg, bblock, target);
6382
6383                         for (j = 0; j < n; ++j) {
6384                                 target = start + cli_addr + (gint32)read32 (ip);
6385                                 GET_BBLOCK (cfg, bblock, target);
6386                                 ip += 4;
6387                         }
6388                         break;
6389                 }
6390                 case MonoInlineR:
6391                 case MonoInlineI8:
6392                         ip += 9;
6393                         break;
6394                 default:
6395                         g_assert_not_reached ();
6396                 }
6397
6398                 if (i == CEE_THROW) {
6399                         unsigned char *bb_start = ip - 1;
6400
6401                         /* Find the start of the bblock containing the throw */
6402                         bblock = NULL;
6403                         while ((bb_start >= start) && !bblock) {
6404                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6405                                 bb_start --;
6406                         }
6407                         if (bblock)
6408                                 bblock->out_of_line = 1;
6409                 }
6410         }
6411         return 0;
6412 unverified:
6413 exception_exit:
6414         *pos = ip;
6415         return 1;
6416 }
6417
6418 static inline MonoMethod *
6419 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6420 {
6421         MonoMethod *method;
6422
6423         error_init (error);
6424
6425         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6426                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6427                 if (context) {
6428                         method = mono_class_inflate_generic_method_checked (method, context, error);
6429                 }
6430         } else {
6431                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6432         }
6433
6434         return method;
6435 }
6436
6437 static inline MonoMethod *
6438 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6439 {
6440         MonoError error;
6441         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6442
6443         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6444                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6445                 method = NULL;
6446         }
6447
6448         if (!method && !cfg)
6449                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6450
6451         return method;
6452 }
6453
6454 static inline MonoMethodSignature*
6455 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6456 {
6457         MonoMethodSignature *fsig;
6458
6459         error_init (error);
6460         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6461                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6462         } else {
6463                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6464                 return_val_if_nok (error, NULL);
6465         }
6466         if (context) {
6467                 fsig = mono_inflate_generic_signature(fsig, context, error);
6468         }
6469         return fsig;
6470 }
6471
6472 static MonoMethod*
6473 throw_exception (void)
6474 {
6475         static MonoMethod *method = NULL;
6476
6477         if (!method) {
6478                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6479                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6480         }
6481         g_assert (method);
6482         return method;
6483 }
6484
6485 static void
6486 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6487 {
6488         MonoMethod *thrower = throw_exception ();
6489         MonoInst *args [1];
6490
6491         EMIT_NEW_PCONST (cfg, args [0], ex);
6492         mono_emit_method_call (cfg, thrower, args, NULL);
6493 }
6494
6495 /*
6496  * Return the original method is a wrapper is specified. We can only access
6497  * the custom attributes from the original method.
6498  */
6499 static MonoMethod*
6500 get_original_method (MonoMethod *method)
6501 {
6502         if (method->wrapper_type == MONO_WRAPPER_NONE)
6503                 return method;
6504
6505         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6506         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6507                 return NULL;
6508
6509         /* in other cases we need to find the original method */
6510         return mono_marshal_method_from_wrapper (method);
6511 }
6512
6513 static void
6514 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6515 {
6516         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6517         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6518         if (ex)
6519                 emit_throw_exception (cfg, ex);
6520 }
6521
6522 static void
6523 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6524 {
6525         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6526         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6527         if (ex)
6528                 emit_throw_exception (cfg, ex);
6529 }
6530
6531 /*
6532  * Check that the IL instructions at ip are the array initialization
6533  * sequence and return the pointer to the data and the size.
6534  */
6535 static const char*
6536 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6537 {
6538         /*
6539          * newarr[System.Int32]
6540          * dup
6541          * ldtoken field valuetype ...
6542          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6543          */
6544         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6545                 MonoError error;
6546                 guint32 token = read32 (ip + 7);
6547                 guint32 field_token = read32 (ip + 2);
6548                 guint32 field_index = field_token & 0xffffff;
6549                 guint32 rva;
6550                 const char *data_ptr;
6551                 int size = 0;
6552                 MonoMethod *cmethod;
6553                 MonoClass *dummy_class;
6554                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6555                 int dummy_align;
6556
6557                 if (!field) {
6558                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6559                         return NULL;
6560                 }
6561
6562                 *out_field_token = field_token;
6563
6564                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6565                 if (!cmethod)
6566                         return NULL;
6567                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6568                         return NULL;
6569                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6570                 case MONO_TYPE_I1:
6571                 case MONO_TYPE_U1:
6572                         size = 1; break;
6573                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6574 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6575                 case MONO_TYPE_I2:
6576                 case MONO_TYPE_U2:
6577                         size = 2; break;
6578                 case MONO_TYPE_I4:
6579                 case MONO_TYPE_U4:
6580                 case MONO_TYPE_R4:
6581                         size = 4; break;
6582                 case MONO_TYPE_R8:
6583                 case MONO_TYPE_I8:
6584                 case MONO_TYPE_U8:
6585                         size = 8; break;
6586 #endif
6587                 default:
6588                         return NULL;
6589                 }
6590                 size *= len;
6591                 if (size > mono_type_size (field->type, &dummy_align))
6592                     return NULL;
6593                 *out_size = size;
6594                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6595                 if (!image_is_dynamic (method->klass->image)) {
6596                         field_index = read32 (ip + 2) & 0xffffff;
6597                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6598                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6599                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6600                         /* for aot code we do the lookup on load */
6601                         if (aot && data_ptr)
6602                                 return (const char *)GUINT_TO_POINTER (rva);
6603                 } else {
6604                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6605                         g_assert (!aot);
6606                         data_ptr = mono_field_get_data (field);
6607                 }
6608                 return data_ptr;
6609         }
6610         return NULL;
6611 }
6612
6613 static void
6614 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6615 {
6616         MonoError error;
6617         char *method_fname = mono_method_full_name (method, TRUE);
6618         char *method_code;
6619         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6620
6621         if (!header) {
6622                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6623                 mono_error_cleanup (&error);
6624         } else if (header->code_size == 0)
6625                 method_code = g_strdup ("method body is empty.");
6626         else
6627                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6628         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6629         g_free (method_fname);
6630         g_free (method_code);
6631         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6632 }
6633
6634 static void
6635 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6636 {
6637         MonoInst *ins;
6638         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6639         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6640                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6641                 /* Optimize reg-reg moves away */
6642                 /*
6643                  * Can't optimize other opcodes, since sp[0] might point to
6644                  * the last ins of a decomposed opcode.
6645                  */
6646                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6647         } else {
6648                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6649         }
6650 }
6651
6652 /*
6653  * ldloca inhibits many optimizations so try to get rid of it in common
6654  * cases.
6655  */
6656 static inline unsigned char *
6657 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6658 {
6659         int local, token;
6660         MonoClass *klass;
6661         MonoType *type;
6662
6663         if (size == 1) {
6664                 local = ip [1];
6665                 ip += 2;
6666         } else {
6667                 local = read16 (ip + 2);
6668                 ip += 4;
6669         }
6670
6671         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6672                 /* From the INITOBJ case */
6673                 token = read32 (ip + 2);
6674                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6675                 CHECK_TYPELOAD (klass);
6676                 type = mini_get_underlying_type (&klass->byval_arg);
6677                 emit_init_local (cfg, local, type, TRUE);
6678                 return ip + 6;
6679         }
6680  exception_exit:
6681         return NULL;
6682 }
6683
6684 static MonoInst*
6685 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6686 {
6687         MonoInst *icall_args [16];
6688         MonoInst *call_target, *ins, *vtable_ins;
6689         int arg_reg, this_reg, vtable_reg;
6690         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6691         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6692         gboolean variant_iface = FALSE;
6693         guint32 slot;
6694         int offset;
6695         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6696
6697         /*
6698          * In llvm-only mode, vtables contain function descriptors instead of
6699          * method addresses/trampolines.
6700          */
6701         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6702
6703         if (is_iface)
6704                 slot = mono_method_get_imt_slot (cmethod);
6705         else
6706                 slot = mono_method_get_vtable_index (cmethod);
6707
6708         this_reg = sp [0]->dreg;
6709
6710         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6711                 variant_iface = TRUE;
6712
6713         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6714                 /*
6715                  * The simplest case, a normal virtual call.
6716                  */
6717                 int slot_reg = alloc_preg (cfg);
6718                 int addr_reg = alloc_preg (cfg);
6719                 int arg_reg = alloc_preg (cfg);
6720                 MonoBasicBlock *non_null_bb;
6721
6722                 vtable_reg = alloc_preg (cfg);
6723                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6724                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6725
6726                 /* Load the vtable slot, which contains a function descriptor. */
6727                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6728
6729                 NEW_BBLOCK (cfg, non_null_bb);
6730
6731                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6732                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6733                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6734
6735                 /* Slow path */
6736                 // FIXME: Make the wrapper use the preserveall cconv
6737                 // FIXME: Use one icall per slot for small slot numbers ?
6738                 icall_args [0] = vtable_ins;
6739                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6740                 /* Make the icall return the vtable slot value to save some code space */
6741                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6742                 ins->dreg = slot_reg;
6743                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6744
6745                 /* Fastpath */
6746                 MONO_START_BB (cfg, non_null_bb);
6747                 /* Load the address + arg from the vtable slot */
6748                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6749                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6750
6751                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6752         }
6753
6754         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6755                 /*
6756                  * A simple interface call
6757                  *
6758                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6759                  * The imt slot contains a function descriptor for a runtime function + arg.
6760                  */
6761                 int slot_reg = alloc_preg (cfg);
6762                 int addr_reg = alloc_preg (cfg);
6763                 int arg_reg = alloc_preg (cfg);
6764                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6765
6766                 vtable_reg = alloc_preg (cfg);
6767                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6768                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6769
6770                 /*
6771                  * The slot is already initialized when the vtable is created so there is no need
6772                  * to check it here.
6773                  */
6774
6775                 /* Load the imt slot, which contains a function descriptor. */
6776                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6777
6778                 /* Load the address + arg of the imt thunk from the imt slot */
6779                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6780                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6781                 /*
6782                  * IMT thunks in llvm-only mode are C functions which take an info argument
6783                  * plus the imt method and return the ftndesc to call.
6784                  */
6785                 icall_args [0] = thunk_arg_ins;
6786                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6787                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6788                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6789
6790                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6791         }
6792
6793         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6794                 /*
6795                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6796                  * dynamically extended as more instantiations are discovered.
6797                  * This handles generic virtual methods both on classes and interfaces.
6798                  */
6799                 int slot_reg = alloc_preg (cfg);
6800                 int addr_reg = alloc_preg (cfg);
6801                 int arg_reg = alloc_preg (cfg);
6802                 int ftndesc_reg = alloc_preg (cfg);
6803                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6804                 MonoBasicBlock *slowpath_bb, *end_bb;
6805
6806                 NEW_BBLOCK (cfg, slowpath_bb);
6807                 NEW_BBLOCK (cfg, end_bb);
6808
6809                 vtable_reg = alloc_preg (cfg);
6810                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6811                 if (is_iface)
6812                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6813                 else
6814                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6815
6816                 /* Load the slot, which contains a function descriptor. */
6817                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6818
6819                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6820                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6821                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6822                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6823
6824                 /* Fastpath */
6825                 /* Same as with iface calls */
6826                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6827                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6828                 icall_args [0] = thunk_arg_ins;
6829                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6830                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6831                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6832                 ftndesc_ins->dreg = ftndesc_reg;
6833                 /*
6834                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6835                  * they don't know about yet. Fall back to the slowpath in that case.
6836                  */
6837                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6838                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6839
6840                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6841
6842                 /* Slowpath */
6843                 MONO_START_BB (cfg, slowpath_bb);
6844                 icall_args [0] = vtable_ins;
6845                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6846                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6847                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6848                 if (is_iface)
6849                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6850                 else
6851                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6852                 ftndesc_ins->dreg = ftndesc_reg;
6853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6854
6855                 /* Common case */
6856                 MONO_START_BB (cfg, end_bb);
6857                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6858         }
6859
6860         /*
6861          * Non-optimized cases
6862          */
6863         icall_args [0] = sp [0];
6864         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6865
6866         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6867                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6868
6869         arg_reg = alloc_preg (cfg);
6870         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6871         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6872
6873         g_assert (is_gsharedvt);
6874         if (is_iface)
6875                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6876         else
6877                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6878
6879         /*
6880          * Pass the extra argument even if the callee doesn't receive it, most
6881          * calling conventions allow this.
6882          */
6883         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6884 }
6885
6886 static gboolean
6887 is_exception_class (MonoClass *klass)
6888 {
6889         while (klass) {
6890                 if (klass == mono_defaults.exception_class)
6891                         return TRUE;
6892                 klass = klass->parent;
6893         }
6894         return FALSE;
6895 }
6896
6897 /*
6898  * is_jit_optimizer_disabled:
6899  *
6900  *   Determine whenever M's assembly has a DebuggableAttribute with the
6901  * IsJITOptimizerDisabled flag set.
6902  */
6903 static gboolean
6904 is_jit_optimizer_disabled (MonoMethod *m)
6905 {
6906         MonoError error;
6907         MonoAssembly *ass = m->klass->image->assembly;
6908         MonoCustomAttrInfo* attrs;
6909         MonoClass *klass;
6910         int i;
6911         gboolean val = FALSE;
6912
6913         g_assert (ass);
6914         if (ass->jit_optimizer_disabled_inited)
6915                 return ass->jit_optimizer_disabled;
6916
6917         klass = mono_class_try_get_debuggable_attribute_class ();
6918
6919         if (!klass) {
6920                 /* Linked away */
6921                 ass->jit_optimizer_disabled = FALSE;
6922                 mono_memory_barrier ();
6923                 ass->jit_optimizer_disabled_inited = TRUE;
6924                 return FALSE;
6925         }
6926
6927         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6928         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6929         if (attrs) {
6930                 for (i = 0; i < attrs->num_attrs; ++i) {
6931                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6932                         const gchar *p;
6933                         MonoMethodSignature *sig;
6934
6935                         if (!attr->ctor || attr->ctor->klass != klass)
6936                                 continue;
6937                         /* Decode the attribute. See reflection.c */
6938                         p = (const char*)attr->data;
6939                         g_assert (read16 (p) == 0x0001);
6940                         p += 2;
6941
6942                         // FIXME: Support named parameters
6943                         sig = mono_method_signature (attr->ctor);
6944                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6945                                 continue;
6946                         /* Two boolean arguments */
6947                         p ++;
6948                         val = *p;
6949                 }
6950                 mono_custom_attrs_free (attrs);
6951         }
6952
6953         ass->jit_optimizer_disabled = val;
6954         mono_memory_barrier ();
6955         ass->jit_optimizer_disabled_inited = TRUE;
6956
6957         return val;
6958 }
6959
6960 static gboolean
6961 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
6962 {
6963         gboolean supported_tail_call;
6964         int i;
6965
6966         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
6967
6968         for (i = 0; i < fsig->param_count; ++i) {
6969                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6970                         /* These can point to the current method's stack */
6971                         supported_tail_call = FALSE;
6972         }
6973         if (fsig->hasthis && cmethod->klass->valuetype)
6974                 /* this might point to the current method's stack */
6975                 supported_tail_call = FALSE;
6976         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6977                 supported_tail_call = FALSE;
6978         if (cfg->method->save_lmf)
6979                 supported_tail_call = FALSE;
6980         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6981                 supported_tail_call = FALSE;
6982         if (call_opcode != CEE_CALL)
6983                 supported_tail_call = FALSE;
6984
6985         /* Debugging support */
6986 #if 0
6987         if (supported_tail_call) {
6988                 if (!mono_debug_count ())
6989                         supported_tail_call = FALSE;
6990         }
6991 #endif
6992
6993         return supported_tail_call;
6994 }
6995
6996 /*
6997  * handle_ctor_call:
6998  *
6999  *   Handle calls made to ctors from NEWOBJ opcodes.
7000  */
7001 static void
7002 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
7003                                   MonoInst **sp, guint8 *ip, int *inline_costs)
7004 {
7005         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7006
7007         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7008                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7009                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7010                         mono_class_vtable (cfg->domain, cmethod->klass);
7011                         CHECK_TYPELOAD (cmethod->klass);
7012
7013                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7014                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7015                 } else {
7016                         if (context_used) {
7017                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7018                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7019                         } else {
7020                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7021
7022                                 CHECK_TYPELOAD (cmethod->klass);
7023                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7024                         }
7025                 }
7026         }
7027
7028         /* Avoid virtual calls to ctors if possible */
7029         if (mono_class_is_marshalbyref (cmethod->klass))
7030                 callvirt_this_arg = sp [0];
7031
7032         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7033                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7034                 CHECK_CFG_EXCEPTION;
7035         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7036                            mono_method_check_inlining (cfg, cmethod) &&
7037                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7038                 int costs;
7039
7040                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7041                         cfg->real_offset += 5;
7042
7043                         *inline_costs += costs - 5;
7044                 } else {
7045                         INLINE_FAILURE ("inline failure");
7046                         // FIXME-VT: Clean this up
7047                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7048                                 GSHAREDVT_FAILURE(*ip);
7049                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7050                 }
7051         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7052                 MonoInst *addr;
7053
7054                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7055
7056                 if (cfg->llvm_only) {
7057                         // FIXME: Avoid initializing vtable_arg
7058                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7059                 } else {
7060                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7061                 }
7062         } else if (context_used &&
7063                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7064                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7065                 MonoInst *cmethod_addr;
7066
7067                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7068
7069                 if (cfg->llvm_only) {
7070                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7071                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7072                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7073                 } else {
7074                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7075                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7076
7077                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7078                 }
7079         } else {
7080                 INLINE_FAILURE ("ctor call");
7081                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7082                                                                                   callvirt_this_arg, NULL, vtable_arg);
7083         }
7084  exception_exit:
7085         return;
7086 }
7087
7088 static void
7089 emit_setret (MonoCompile *cfg, MonoInst *val)
7090 {
7091         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7092         MonoInst *ins;
7093
7094         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7095                 MonoInst *ret_addr;
7096
7097                 if (!cfg->vret_addr) {
7098                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7099                 } else {
7100                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7101
7102                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7103                         ins->klass = mono_class_from_mono_type (ret_type);
7104                 }
7105         } else {
7106 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7107                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7108                         MonoInst *iargs [1];
7109                         MonoInst *conv;
7110
7111                         iargs [0] = val;
7112                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7113                         mono_arch_emit_setret (cfg, cfg->method, conv);
7114                 } else {
7115                         mono_arch_emit_setret (cfg, cfg->method, val);
7116                 }
7117 #else
7118                 mono_arch_emit_setret (cfg, cfg->method, val);
7119 #endif
7120         }
7121 }
7122
7123 /*
7124  * mono_method_to_ir:
7125  *
7126  * Translate the .net IL into linear IR.
7127  *
7128  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7129  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7130  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7131  * @inline_args: if not NULL, contains the arguments to the inline call
7132  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7133  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7134  *
7135  * This method is used to turn ECMA IL into Mono's internal Linear IR
7136  * reprensetation.  It is used both for entire methods, as well as
7137  * inlining existing methods.  In the former case, the @start_bblock,
7138  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7139  * inline_offset is set to zero.
7140  *
7141  * Returns: the inline cost, or -1 if there was an error processing this method.
7142  */
7143 int
7144 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7145                    MonoInst *return_var, MonoInst **inline_args,
7146                    guint inline_offset, gboolean is_virtual_call)
7147 {
7148         MonoError error;
7149         MonoInst *ins, **sp, **stack_start;
7150         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7151         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7152         MonoMethod *cmethod, *method_definition;
7153         MonoInst **arg_array;
7154         MonoMethodHeader *header;
7155         MonoImage *image;
7156         guint32 token, ins_flag;
7157         MonoClass *klass;
7158         MonoClass *constrained_class = NULL;
7159         unsigned char *ip, *end, *target, *err_pos;
7160         MonoMethodSignature *sig;
7161         MonoGenericContext *generic_context = NULL;
7162         MonoGenericContainer *generic_container = NULL;
7163         MonoType **param_types;
7164         int i, n, start_new_bblock, dreg;
7165         int num_calls = 0, inline_costs = 0;
7166         int breakpoint_id = 0;
7167         guint num_args;
7168         GSList *class_inits = NULL;
7169         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7170         int context_used;
7171         gboolean init_locals, seq_points, skip_dead_blocks;
7172         gboolean sym_seq_points = FALSE;
7173         MonoDebugMethodInfo *minfo;
7174         MonoBitSet *seq_point_locs = NULL;
7175         MonoBitSet *seq_point_set_locs = NULL;
7176
7177         cfg->disable_inline = is_jit_optimizer_disabled (method);
7178
7179         /* serialization and xdomain stuff may need access to private fields and methods */
7180         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7182         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7183         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7185         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7186
7187         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7188         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7191         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7192
7193         image = method->klass->image;
7194         header = mono_method_get_header_checked (method, &cfg->error);
7195         if (!header) {
7196                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7197                 goto exception_exit;
7198         } else {
7199                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7200         }
7201
7202         generic_container = mono_method_get_generic_container (method);
7203         sig = mono_method_signature (method);
7204         num_args = sig->hasthis + sig->param_count;
7205         ip = (unsigned char*)header->code;
7206         cfg->cil_start = ip;
7207         end = ip + header->code_size;
7208         cfg->stat_cil_code_size += header->code_size;
7209
7210         seq_points = cfg->gen_seq_points && cfg->method == method;
7211
7212         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7213                 /* We could hit a seq point before attaching to the JIT (#8338) */
7214                 seq_points = FALSE;
7215         }
7216
7217         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7218                 minfo = mono_debug_lookup_method (method);
7219                 if (minfo) {
7220                         MonoSymSeqPoint *sps;
7221                         int i, n_il_offsets;
7222
7223                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7224                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7225                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7226                         sym_seq_points = TRUE;
7227                         for (i = 0; i < n_il_offsets; ++i) {
7228                                 if (sps [i].il_offset < header->code_size)
7229                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7230                         }
7231                         g_free (sps);
7232
7233                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7234                         if (asyncMethod) {
7235                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7236                                 {
7237                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7238                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7239                                 }
7240                                 mono_debug_free_method_async_debug_info (asyncMethod);
7241                         }
7242                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7243                         /* Methods without line number info like auto-generated property accessors */
7244                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7245                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7246                         sym_seq_points = TRUE;
7247                 }
7248         }
7249
7250         /*
7251          * Methods without init_locals set could cause asserts in various passes
7252          * (#497220). To work around this, we emit dummy initialization opcodes
7253          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7254          * on some platforms.
7255          */
7256         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7257                 init_locals = header->init_locals;
7258         else
7259                 init_locals = TRUE;
7260
7261         method_definition = method;
7262         while (method_definition->is_inflated) {
7263                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7264                 method_definition = imethod->declaring;
7265         }
7266
7267         /* SkipVerification is not allowed if core-clr is enabled */
7268         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7269                 dont_verify = TRUE;
7270                 dont_verify_stloc = TRUE;
7271         }
7272
7273         if (sig->is_inflated)
7274                 generic_context = mono_method_get_context (method);
7275         else if (generic_container)
7276                 generic_context = &generic_container->context;
7277         cfg->generic_context = generic_context;
7278
7279         if (!cfg->gshared)
7280                 g_assert (!sig->has_type_parameters);
7281
7282         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7283                 g_assert (method->is_inflated);
7284                 g_assert (mono_method_get_context (method)->method_inst);
7285         }
7286         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7287                 g_assert (sig->generic_param_count);
7288
7289         if (cfg->method == method) {
7290                 cfg->real_offset = 0;
7291         } else {
7292                 cfg->real_offset = inline_offset;
7293         }
7294
7295         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7296         cfg->cil_offset_to_bb_len = header->code_size;
7297
7298         cfg->current_method = method;
7299
7300         if (cfg->verbose_level > 2)
7301                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7302
7303         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7304         if (sig->hasthis)
7305                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7306         for (n = 0; n < sig->param_count; ++n)
7307                 param_types [n + sig->hasthis] = sig->params [n];
7308         cfg->arg_types = param_types;
7309
7310         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7311         if (cfg->method == method) {
7312
7313                 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7314
7315                 /* ENTRY BLOCK */
7316                 NEW_BBLOCK (cfg, start_bblock);
7317                 cfg->bb_entry = start_bblock;
7318                 start_bblock->cil_code = NULL;
7319                 start_bblock->cil_length = 0;
7320
7321                 /* EXIT BLOCK */
7322                 NEW_BBLOCK (cfg, end_bblock);
7323                 cfg->bb_exit = end_bblock;
7324                 end_bblock->cil_code = NULL;
7325                 end_bblock->cil_length = 0;
7326                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7327                 g_assert (cfg->num_bblocks == 2);
7328
7329                 arg_array = cfg->args;
7330
7331                 if (header->num_clauses) {
7332                         cfg->spvars = g_hash_table_new (NULL, NULL);
7333                         cfg->exvars = g_hash_table_new (NULL, NULL);
7334                 }
7335                 /* handle exception clauses */
7336                 for (i = 0; i < header->num_clauses; ++i) {
7337                         MonoBasicBlock *try_bb;
7338                         MonoExceptionClause *clause = &header->clauses [i];
7339                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7340
7341                         try_bb->real_offset = clause->try_offset;
7342                         try_bb->try_start = TRUE;
7343                         try_bb->region = ((i + 1) << 8) | clause->flags;
7344                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7345                         tblock->real_offset = clause->handler_offset;
7346                         tblock->flags |= BB_EXCEPTION_HANDLER;
7347
7348                         /*
7349                          * Linking the try block with the EH block hinders inlining as we won't be able to
7350                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7351                          */
7352                         if (COMPILE_LLVM (cfg))
7353                                 link_bblock (cfg, try_bb, tblock);
7354
7355                         if (*(ip + clause->handler_offset) == CEE_POP)
7356                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7357
7358                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7359                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7360                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7361                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7362                                 MONO_ADD_INS (tblock, ins);
7363
7364                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7365                                         /* finally clauses already have a seq point */
7366                                         /* seq points for filter clauses are emitted below */
7367                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7368                                         MONO_ADD_INS (tblock, ins);
7369                                 }
7370
7371                                 /* todo: is a fault block unsafe to optimize? */
7372                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7373                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7374                         }
7375
7376                         /*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);
7377                           while (p < end) {
7378                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7379                           }*/
7380                         /* catch and filter blocks get the exception object on the stack */
7381                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7382                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7383
7384                                 /* mostly like handle_stack_args (), but just sets the input args */
7385                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7386                                 tblock->in_scount = 1;
7387                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7388                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7389
7390                                 cfg->cbb = tblock;
7391
7392 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7393                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7394                                 if (!cfg->compile_llvm) {
7395                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7396                                         ins->dreg = tblock->in_stack [0]->dreg;
7397                                         MONO_ADD_INS (tblock, ins);
7398                                 }
7399 #else
7400                                 MonoInst *dummy_use;
7401
7402                                 /*
7403                                  * Add a dummy use for the exvar so its liveness info will be
7404                                  * correct.
7405                                  */
7406                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7407 #endif
7408
7409                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7410                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7411                                         MONO_ADD_INS (tblock, ins);
7412                                 }
7413
7414                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7415                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7416                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7417                                         tblock->real_offset = clause->data.filter_offset;
7418                                         tblock->in_scount = 1;
7419                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7420                                         /* The filter block shares the exvar with the handler block */
7421                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7422                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7423                                         MONO_ADD_INS (tblock, ins);
7424                                 }
7425                         }
7426
7427                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7428                                         clause->data.catch_class &&
7429                                         cfg->gshared &&
7430                                         mono_class_check_context_used (clause->data.catch_class)) {
7431                                 /*
7432                                  * In shared generic code with catch
7433                                  * clauses containing type variables
7434                                  * the exception handling code has to
7435                                  * be able to get to the rgctx.
7436                                  * Therefore we have to make sure that
7437                                  * the vtable/mrgctx argument (for
7438                                  * static or generic methods) or the
7439                                  * "this" argument (for non-static
7440                                  * methods) are live.
7441                                  */
7442                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7443                                                 mini_method_get_context (method)->method_inst ||
7444                                                 method->klass->valuetype) {
7445                                         mono_get_vtable_var (cfg);
7446                                 } else {
7447                                         MonoInst *dummy_use;
7448
7449                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7450                                 }
7451                         }
7452                 }
7453         } else {
7454                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7455                 cfg->cbb = start_bblock;
7456                 cfg->args = arg_array;
7457                 mono_save_args (cfg, sig, inline_args);
7458         }
7459
7460         /* FIRST CODE BLOCK */
7461         NEW_BBLOCK (cfg, tblock);
7462         tblock->cil_code = ip;
7463         cfg->cbb = tblock;
7464         cfg->ip = ip;
7465
7466         ADD_BBLOCK (cfg, tblock);
7467
7468         if (cfg->method == method) {
7469                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7470                 if (breakpoint_id) {
7471                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7472                         MONO_ADD_INS (cfg->cbb, ins);
7473                 }
7474         }
7475
7476         /* we use a separate basic block for the initialization code */
7477         NEW_BBLOCK (cfg, init_localsbb);
7478         if (cfg->method == method)
7479                 cfg->bb_init = init_localsbb;
7480         init_localsbb->real_offset = cfg->real_offset;
7481         start_bblock->next_bb = init_localsbb;
7482         init_localsbb->next_bb = cfg->cbb;
7483         link_bblock (cfg, start_bblock, init_localsbb);
7484         link_bblock (cfg, init_localsbb, cfg->cbb);
7485
7486         cfg->cbb = init_localsbb;
7487
7488         if (cfg->gsharedvt && cfg->method == method) {
7489                 MonoGSharedVtMethodInfo *info;
7490                 MonoInst *var, *locals_var;
7491                 int dreg;
7492
7493                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7494                 info->method = cfg->method;
7495                 info->count_entries = 16;
7496                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7497                 cfg->gsharedvt_info = info;
7498
7499                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7500                 /* prevent it from being register allocated */
7501                 //var->flags |= MONO_INST_VOLATILE;
7502                 cfg->gsharedvt_info_var = var;
7503
7504                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7505                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7506
7507                 /* Allocate locals */
7508                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7509                 /* prevent it from being register allocated */
7510                 //locals_var->flags |= MONO_INST_VOLATILE;
7511                 cfg->gsharedvt_locals_var = locals_var;
7512
7513                 dreg = alloc_ireg (cfg);
7514                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7515
7516                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7517                 ins->dreg = locals_var->dreg;
7518                 ins->sreg1 = dreg;
7519                 MONO_ADD_INS (cfg->cbb, ins);
7520                 cfg->gsharedvt_locals_var_ins = ins;
7521
7522                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7523                 /*
7524                 if (init_locals)
7525                         ins->flags |= MONO_INST_INIT;
7526                 */
7527         }
7528
7529         if (mono_security_core_clr_enabled ()) {
7530                 /* check if this is native code, e.g. an icall or a p/invoke */
7531                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7532                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7533                         if (wrapped) {
7534                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7535                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7536
7537                                 /* if this ia a native call then it can only be JITted from platform code */
7538                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7539                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7540                                                 MonoException *ex = icall ? mono_get_exception_security () :
7541                                                         mono_get_exception_method_access ();
7542                                                 emit_throw_exception (cfg, ex);
7543                                         }
7544                                 }
7545                         }
7546                 }
7547         }
7548
7549         CHECK_CFG_EXCEPTION;
7550
7551         if (header->code_size == 0)
7552                 UNVERIFIED;
7553
7554         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7555                 ip = err_pos;
7556                 UNVERIFIED;
7557         }
7558
7559         if (cfg->method == method)
7560                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7561
7562         for (n = 0; n < header->num_locals; ++n) {
7563                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7564                         UNVERIFIED;
7565         }
7566         class_inits = NULL;
7567
7568         /* We force the vtable variable here for all shared methods
7569            for the possibility that they might show up in a stack
7570            trace where their exact instantiation is needed. */
7571         if (cfg->gshared && method == cfg->method) {
7572                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7573                                 mini_method_get_context (method)->method_inst ||
7574                                 method->klass->valuetype) {
7575                         mono_get_vtable_var (cfg);
7576                 } else {
7577                         /* FIXME: Is there a better way to do this?
7578                            We need the variable live for the duration
7579                            of the whole method. */
7580                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7581                 }
7582         }
7583
7584         /* add a check for this != NULL to inlined methods */
7585         if (is_virtual_call) {
7586                 MonoInst *arg_ins;
7587
7588                 NEW_ARGLOAD (cfg, arg_ins, 0);
7589                 MONO_ADD_INS (cfg->cbb, arg_ins);
7590                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7591         }
7592
7593         skip_dead_blocks = !dont_verify;
7594         if (skip_dead_blocks) {
7595                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7596                 CHECK_CFG_ERROR;
7597                 g_assert (bb);
7598         }
7599
7600         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7601         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7602
7603         ins_flag = 0;
7604         start_new_bblock = 0;
7605         while (ip < end) {
7606                 if (cfg->method == method)
7607                         cfg->real_offset = ip - header->code;
7608                 else
7609                         cfg->real_offset = inline_offset;
7610                 cfg->ip = ip;
7611
7612                 context_used = 0;
7613
7614                 if (start_new_bblock) {
7615                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7616                         if (start_new_bblock == 2) {
7617                                 g_assert (ip == tblock->cil_code);
7618                         } else {
7619                                 GET_BBLOCK (cfg, tblock, ip);
7620                         }
7621                         cfg->cbb->next_bb = tblock;
7622                         cfg->cbb = tblock;
7623                         start_new_bblock = 0;
7624                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7625                                 if (cfg->verbose_level > 3)
7626                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7627                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7628                                 *sp++ = ins;
7629                         }
7630                         if (class_inits)
7631                                 g_slist_free (class_inits);
7632                         class_inits = NULL;
7633                 } else {
7634                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7635                                 link_bblock (cfg, cfg->cbb, tblock);
7636                                 if (sp != stack_start) {
7637                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7638                                         sp = stack_start;
7639                                         CHECK_UNVERIFIABLE (cfg);
7640                                 }
7641                                 cfg->cbb->next_bb = tblock;
7642                                 cfg->cbb = tblock;
7643                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7644                                         if (cfg->verbose_level > 3)
7645                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7646                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7647                                         *sp++ = ins;
7648                                 }
7649                                 g_slist_free (class_inits);
7650                                 class_inits = NULL;
7651                         }
7652                 }
7653
7654                 if (skip_dead_blocks) {
7655                         int ip_offset = ip - header->code;
7656
7657                         if (ip_offset == bb->end)
7658                                 bb = bb->next;
7659
7660                         if (bb->dead) {
7661                                 int op_size = mono_opcode_size (ip, end);
7662                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7663
7664                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7665
7666                                 if (ip_offset + op_size == bb->end) {
7667                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7668                                         MONO_ADD_INS (cfg->cbb, ins);
7669                                         start_new_bblock = 1;
7670                                 }
7671
7672                                 ip += op_size;
7673                                 continue;
7674                         }
7675                 }
7676                 /*
7677                  * Sequence points are points where the debugger can place a breakpoint.
7678                  * Currently, we generate these automatically at points where the IL
7679                  * stack is empty.
7680                  */
7681                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7682                         /*
7683                          * Make methods interruptable at the beginning, and at the targets of
7684                          * backward branches.
7685                          * Also, do this at the start of every bblock in methods with clauses too,
7686                          * to be able to handle instructions with inprecise control flow like
7687                          * throw/endfinally.
7688                          * Backward branches are handled at the end of method-to-ir ().
7689                          */
7690                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7691                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7692
7693                         /* Avoid sequence points on empty IL like .volatile */
7694                         // FIXME: Enable this
7695                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7696                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7697                         if ((sp != stack_start) && !sym_seq_point)
7698                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7699                         MONO_ADD_INS (cfg->cbb, ins);
7700
7701                         if (sym_seq_points)
7702                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7703                 }
7704
7705                 cfg->cbb->real_offset = cfg->real_offset;
7706
7707                 if ((cfg->method == method) && cfg->coverage_info) {
7708                         guint32 cil_offset = ip - header->code;
7709                         gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7710                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7711
7712                         if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7713                                 MonoInst *one_ins, *load_ins;
7714
7715                                 EMIT_NEW_PCONST (cfg, load_ins, counter);
7716                                 EMIT_NEW_ICONST (cfg, one_ins, 1);
7717                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7718                                 ins->dreg = mono_alloc_ireg (cfg);
7719                                 ins->inst_basereg = load_ins->dreg;
7720                                 ins->inst_offset = 0;
7721                                 ins->sreg2 = one_ins->dreg;
7722                                 ins->type = STACK_I4;
7723                                 MONO_ADD_INS (cfg->cbb, ins);
7724                         } else {
7725                                 EMIT_NEW_PCONST (cfg, ins, counter);
7726                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7727                         }
7728                 }
7729
7730                 if (cfg->verbose_level > 3)
7731                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7732
7733                 switch (*ip) {
7734                 case CEE_NOP:
7735                         if (seq_points && !sym_seq_points && sp != stack_start) {
7736                                 /*
7737                                  * The C# compiler uses these nops to notify the JIT that it should
7738                                  * insert seq points.
7739                                  */
7740                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7741                                 MONO_ADD_INS (cfg->cbb, ins);
7742                         }
7743                         if (cfg->keep_cil_nops)
7744                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7745                         else
7746                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7747                         ip++;
7748                         MONO_ADD_INS (cfg->cbb, ins);
7749                         break;
7750                 case CEE_BREAK:
7751                         if (mini_should_insert_breakpoint (cfg->method)) {
7752                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7753                         } else {
7754                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7755                         }
7756                         ip++;
7757                         MONO_ADD_INS (cfg->cbb, ins);
7758                         break;
7759                 case CEE_LDARG_0:
7760                 case CEE_LDARG_1:
7761                 case CEE_LDARG_2:
7762                 case CEE_LDARG_3:
7763                         CHECK_STACK_OVF (1);
7764                         n = (*ip)-CEE_LDARG_0;
7765                         CHECK_ARG (n);
7766                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7767                         ip++;
7768                         *sp++ = ins;
7769                         break;
7770                 case CEE_LDLOC_0:
7771                 case CEE_LDLOC_1:
7772                 case CEE_LDLOC_2:
7773                 case CEE_LDLOC_3:
7774                         CHECK_STACK_OVF (1);
7775                         n = (*ip)-CEE_LDLOC_0;
7776                         CHECK_LOCAL (n);
7777                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7778                         ip++;
7779                         *sp++ = ins;
7780                         break;
7781                 case CEE_STLOC_0:
7782                 case CEE_STLOC_1:
7783                 case CEE_STLOC_2:
7784                 case CEE_STLOC_3: {
7785                         CHECK_STACK (1);
7786                         n = (*ip)-CEE_STLOC_0;
7787                         CHECK_LOCAL (n);
7788                         --sp;
7789                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7790                                 UNVERIFIED;
7791                         emit_stloc_ir (cfg, sp, header, n);
7792                         ++ip;
7793                         inline_costs += 1;
7794                         break;
7795                         }
7796                 case CEE_LDARG_S:
7797                         CHECK_OPSIZE (2);
7798                         CHECK_STACK_OVF (1);
7799                         n = ip [1];
7800                         CHECK_ARG (n);
7801                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7802                         *sp++ = ins;
7803                         ip += 2;
7804                         break;
7805                 case CEE_LDARGA_S:
7806                         CHECK_OPSIZE (2);
7807                         CHECK_STACK_OVF (1);
7808                         n = ip [1];
7809                         CHECK_ARG (n);
7810                         NEW_ARGLOADA (cfg, ins, n);
7811                         MONO_ADD_INS (cfg->cbb, ins);
7812                         *sp++ = ins;
7813                         ip += 2;
7814                         break;
7815                 case CEE_STARG_S:
7816                         CHECK_OPSIZE (2);
7817                         CHECK_STACK (1);
7818                         --sp;
7819                         n = ip [1];
7820                         CHECK_ARG (n);
7821                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7822                                 UNVERIFIED;
7823                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7824                         ip += 2;
7825                         break;
7826                 case CEE_LDLOC_S:
7827                         CHECK_OPSIZE (2);
7828                         CHECK_STACK_OVF (1);
7829                         n = ip [1];
7830                         CHECK_LOCAL (n);
7831                         if ((ip [2] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 2) && MONO_TYPE_ISSTRUCT (header->locals [n])) {
7832                                 /* Avoid loading a struct just to load one of its fields */
7833                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
7834                         } else {
7835                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
7836                         }
7837                         *sp++ = ins;
7838                         ip += 2;
7839                         break;
7840                 case CEE_LDLOCA_S: {
7841                         unsigned char *tmp_ip;
7842                         CHECK_OPSIZE (2);
7843                         CHECK_STACK_OVF (1);
7844                         CHECK_LOCAL (ip [1]);
7845
7846                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7847                                 ip = tmp_ip;
7848                                 inline_costs += 1;
7849                                 break;
7850                         }
7851
7852                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7853                         *sp++ = ins;
7854                         ip += 2;
7855                         break;
7856                 }
7857                 case CEE_STLOC_S:
7858                         CHECK_OPSIZE (2);
7859                         CHECK_STACK (1);
7860                         --sp;
7861                         CHECK_LOCAL (ip [1]);
7862                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7863                                 UNVERIFIED;
7864                         emit_stloc_ir (cfg, sp, header, ip [1]);
7865                         ip += 2;
7866                         inline_costs += 1;
7867                         break;
7868                 case CEE_LDNULL:
7869                         CHECK_STACK_OVF (1);
7870                         EMIT_NEW_PCONST (cfg, ins, NULL);
7871                         ins->type = STACK_OBJ;
7872                         ++ip;
7873                         *sp++ = ins;
7874                         break;
7875                 case CEE_LDC_I4_M1:
7876                         CHECK_STACK_OVF (1);
7877                         EMIT_NEW_ICONST (cfg, ins, -1);
7878                         ++ip;
7879                         *sp++ = ins;
7880                         break;
7881                 case CEE_LDC_I4_0:
7882                 case CEE_LDC_I4_1:
7883                 case CEE_LDC_I4_2:
7884                 case CEE_LDC_I4_3:
7885                 case CEE_LDC_I4_4:
7886                 case CEE_LDC_I4_5:
7887                 case CEE_LDC_I4_6:
7888                 case CEE_LDC_I4_7:
7889                 case CEE_LDC_I4_8:
7890                         CHECK_STACK_OVF (1);
7891                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7892                         ++ip;
7893                         *sp++ = ins;
7894                         break;
7895                 case CEE_LDC_I4_S:
7896                         CHECK_OPSIZE (2);
7897                         CHECK_STACK_OVF (1);
7898                         ++ip;
7899                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7900                         ++ip;
7901                         *sp++ = ins;
7902                         break;
7903                 case CEE_LDC_I4:
7904                         CHECK_OPSIZE (5);
7905                         CHECK_STACK_OVF (1);
7906                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7907                         ip += 5;
7908                         *sp++ = ins;
7909                         break;
7910                 case CEE_LDC_I8:
7911                         CHECK_OPSIZE (9);
7912                         CHECK_STACK_OVF (1);
7913                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7914                         ins->type = STACK_I8;
7915                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7916                         ++ip;
7917                         ins->inst_l = (gint64)read64 (ip);
7918                         MONO_ADD_INS (cfg->cbb, ins);
7919                         ip += 8;
7920                         *sp++ = ins;
7921                         break;
7922                 case CEE_LDC_R4: {
7923                         float *f;
7924                         gboolean use_aotconst = FALSE;
7925
7926 #ifdef TARGET_POWERPC
7927                         /* FIXME: Clean this up */
7928                         if (cfg->compile_aot)
7929                                 use_aotconst = TRUE;
7930 #endif
7931
7932                         /* FIXME: we should really allocate this only late in the compilation process */
7933                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7934                         CHECK_OPSIZE (5);
7935                         CHECK_STACK_OVF (1);
7936
7937                         if (use_aotconst) {
7938                                 MonoInst *cons;
7939                                 int dreg;
7940
7941                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7942
7943                                 dreg = alloc_freg (cfg);
7944                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7945                                 ins->type = cfg->r4_stack_type;
7946                         } else {
7947                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7948                                 ins->type = cfg->r4_stack_type;
7949                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7950                                 ins->inst_p0 = f;
7951                                 MONO_ADD_INS (cfg->cbb, ins);
7952                         }
7953                         ++ip;
7954                         readr4 (ip, f);
7955                         ip += 4;
7956                         *sp++ = ins;
7957                         break;
7958                 }
7959                 case CEE_LDC_R8: {
7960                         double *d;
7961                         gboolean use_aotconst = FALSE;
7962
7963 #ifdef TARGET_POWERPC
7964                         /* FIXME: Clean this up */
7965                         if (cfg->compile_aot)
7966                                 use_aotconst = TRUE;
7967 #endif
7968
7969                         /* FIXME: we should really allocate this only late in the compilation process */
7970                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
7971                         CHECK_OPSIZE (9);
7972                         CHECK_STACK_OVF (1);
7973
7974                         if (use_aotconst) {
7975                                 MonoInst *cons;
7976                                 int dreg;
7977
7978                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7979
7980                                 dreg = alloc_freg (cfg);
7981                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7982                                 ins->type = STACK_R8;
7983                         } else {
7984                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7985                                 ins->type = STACK_R8;
7986                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7987                                 ins->inst_p0 = d;
7988                                 MONO_ADD_INS (cfg->cbb, ins);
7989                         }
7990                         ++ip;
7991                         readr8 (ip, d);
7992                         ip += 8;
7993                         *sp++ = ins;
7994                         break;
7995                 }
7996                 case CEE_DUP: {
7997                         MonoInst *temp, *store;
7998                         CHECK_STACK (1);
7999                         CHECK_STACK_OVF (1);
8000                         sp--;
8001                         ins = *sp;
8002
8003                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8004                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8005
8006                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8007                         *sp++ = ins;
8008
8009                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8010                         *sp++ = ins;
8011
8012                         ++ip;
8013                         inline_costs += 2;
8014                         break;
8015                 }
8016                 case CEE_POP:
8017                         CHECK_STACK (1);
8018                         ip++;
8019                         --sp;
8020
8021 #ifdef TARGET_X86
8022                         if (sp [0]->type == STACK_R8)
8023                                 /* we need to pop the value from the x86 FP stack */
8024                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8025 #endif
8026                         break;
8027                 case CEE_JMP: {
8028                         MonoCallInst *call;
8029                         MonoMethodSignature *fsig;
8030                         int i, n;
8031
8032                         INLINE_FAILURE ("jmp");
8033                         GSHAREDVT_FAILURE (*ip);
8034
8035                         CHECK_OPSIZE (5);
8036                         if (stack_start != sp)
8037                                 UNVERIFIED;
8038                         token = read32 (ip + 1);
8039                         /* FIXME: check the signature matches */
8040                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8041                         CHECK_CFG_ERROR;
8042
8043                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8044                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8045
8046                         emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
8047
8048                         fsig = mono_method_signature (cmethod);
8049                         n = fsig->param_count + fsig->hasthis;
8050                         if (cfg->llvm_only) {
8051                                 MonoInst **args;
8052
8053                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8054                                 for (i = 0; i < n; ++i)
8055                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8056                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8057                                 /*
8058                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8059                                  * have to emit a normal return since llvm expects it.
8060                                  */
8061                                 if (cfg->ret)
8062                                         emit_setret (cfg, ins);
8063                                 MONO_INST_NEW (cfg, ins, OP_BR);
8064                                 ins->inst_target_bb = end_bblock;
8065                                 MONO_ADD_INS (cfg->cbb, ins);
8066                                 link_bblock (cfg, cfg->cbb, end_bblock);
8067                                 ip += 5;
8068                                 break;
8069                         } else if (cfg->backend->have_op_tail_call) {
8070                                 /* Handle tail calls similarly to calls */
8071                                 DISABLE_AOT (cfg);
8072
8073                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8074                                 call->method = cmethod;
8075                                 call->tail_call = TRUE;
8076                                 call->signature = mono_method_signature (cmethod);
8077                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8078                                 call->inst.inst_p0 = cmethod;
8079                                 for (i = 0; i < n; ++i)
8080                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8081
8082                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8083                                         call->vret_var = cfg->vret_addr;
8084
8085                                 mono_arch_emit_call (cfg, call);
8086                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8087                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8088                         } else {
8089                                 for (i = 0; i < num_args; ++i)
8090                                         /* Prevent arguments from being optimized away */
8091                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8092
8093                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8094                                 ins = (MonoInst*)call;
8095                                 ins->inst_p0 = cmethod;
8096                                 MONO_ADD_INS (cfg->cbb, ins);
8097                         }
8098
8099                         ip += 5;
8100                         start_new_bblock = 1;
8101                         break;
8102                 }
8103                 case CEE_CALLI: {
8104                         MonoInst *addr;
8105                         MonoMethodSignature *fsig;
8106
8107                         CHECK_OPSIZE (5);
8108                         token = read32 (ip + 1);
8109
8110                         ins = NULL;
8111
8112                         //GSHAREDVT_FAILURE (*ip);
8113                         cmethod = NULL;
8114                         CHECK_STACK (1);
8115                         --sp;
8116                         addr = *sp;
8117                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8118                         CHECK_CFG_ERROR;
8119
8120                         if (method->dynamic && fsig->pinvoke) {
8121                                 MonoInst *args [3];
8122
8123                                 /*
8124                                  * This is a call through a function pointer using a pinvoke
8125                                  * signature. Have to create a wrapper and call that instead.
8126                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8127                                  * instead based on the signature.
8128                                  */
8129                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8130                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8131                                 args [2] = addr;
8132                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8133                         }
8134
8135                         n = fsig->param_count + fsig->hasthis;
8136
8137                         CHECK_STACK (n);
8138
8139                         //g_assert (!virtual_ || fsig->hasthis);
8140
8141                         sp -= n;
8142
8143                         inline_costs += 10 * num_calls++;
8144
8145                         /*
8146                          * Making generic calls out of gsharedvt methods.
8147                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8148                          * patching gshared method addresses into a gsharedvt method.
8149                          */
8150                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8151                                 /*
8152                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8153                                  */
8154                                 MonoInst *callee = addr;
8155
8156                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8157                                         /* Not tested */
8158                                         GSHAREDVT_FAILURE (*ip);
8159
8160                                 if (cfg->llvm_only)
8161                                         // FIXME:
8162                                         GSHAREDVT_FAILURE (*ip);
8163
8164                                 addr = emit_get_rgctx_sig (cfg, context_used,
8165                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8166                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8167                                 goto calli_end;
8168                         }
8169
8170                         /* Prevent inlining of methods with indirect calls */
8171                         INLINE_FAILURE ("indirect call");
8172
8173                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8174                                 MonoJumpInfoType info_type;
8175                                 gpointer info_data;
8176
8177                                 /*
8178                                  * Instead of emitting an indirect call, emit a direct call
8179                                  * with the contents of the aotconst as the patch info.
8180                                  */
8181                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8182                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8183                                         info_data = addr->inst_p0;
8184                                 } else {
8185                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8186                                         info_data = addr->inst_right->inst_left;
8187                                 }
8188
8189                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8190                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8191                                         NULLIFY_INS (addr);
8192                                         goto calli_end;
8193                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8194                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8195                                         NULLIFY_INS (addr);
8196                                         goto calli_end;
8197                                 }
8198                         }
8199                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8200
8201                         calli_end:
8202
8203                         /* End of call, INS should contain the result of the call, if any */
8204
8205                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8206                                 g_assert (ins);
8207                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8208                         }
8209
8210                         CHECK_CFG_EXCEPTION;
8211
8212                         ip += 5;
8213                         ins_flag = 0;
8214                         constrained_class = NULL;
8215                         break;
8216                 }
8217                 case CEE_CALL:
8218                 case CEE_CALLVIRT: {
8219                         MonoInst *addr = NULL;
8220                         MonoMethodSignature *fsig = NULL;
8221                         int array_rank = 0;
8222                         int virtual_ = *ip == CEE_CALLVIRT;
8223                         gboolean pass_imt_from_rgctx = FALSE;
8224                         MonoInst *imt_arg = NULL;
8225                         MonoInst *keep_this_alive = NULL;
8226                         gboolean pass_vtable = FALSE;
8227                         gboolean pass_mrgctx = FALSE;
8228                         MonoInst *vtable_arg = NULL;
8229                         gboolean check_this = FALSE;
8230                         gboolean supported_tail_call = FALSE;
8231                         gboolean tail_call = FALSE;
8232                         gboolean need_seq_point = FALSE;
8233                         guint32 call_opcode = *ip;
8234                         gboolean emit_widen = TRUE;
8235                         gboolean push_res = TRUE;
8236                         gboolean skip_ret = FALSE;
8237                         gboolean delegate_invoke = FALSE;
8238                         gboolean direct_icall = FALSE;
8239                         gboolean constrained_partial_call = FALSE;
8240                         MonoMethod *cil_method;
8241
8242                         CHECK_OPSIZE (5);
8243                         token = read32 (ip + 1);
8244
8245                         ins = NULL;
8246
8247                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8248                         CHECK_CFG_ERROR;
8249
8250                         cil_method = cmethod;
8251
8252                         if (constrained_class) {
8253                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8254                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8255                                                 g_assert (!cmethod->klass->valuetype);
8256                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8257                                                         constrained_partial_call = TRUE;
8258                                         }
8259                                 }
8260
8261                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8262                                         if (cfg->verbose_level > 2)
8263                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8264                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8265                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8266                                                   cfg->gshared)) {
8267                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8268                                                 CHECK_CFG_ERROR;
8269                                         }
8270                                 } else {
8271                                         if (cfg->verbose_level > 2)
8272                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8273
8274                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8275                                                 /*
8276                                                  * This is needed since get_method_constrained can't find
8277                                                  * the method in klass representing a type var.
8278                                                  * The type var is guaranteed to be a reference type in this
8279                                                  * case.
8280                                                  */
8281                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8282                                                         g_assert (!cmethod->klass->valuetype);
8283                                         } else {
8284                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8285                                                 CHECK_CFG_ERROR;
8286                                         }
8287                                 }
8288
8289                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8290                                         /* Use the corresponding method from the base type to avoid boxing */
8291                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8292                                         g_assert (base_type);
8293                                         constrained_class = mono_class_from_mono_type (base_type);
8294                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8295                                         g_assert (cmethod);
8296                                 }
8297                         }
8298
8299                         if (!dont_verify && !cfg->skip_visibility) {
8300                                 MonoMethod *target_method = cil_method;
8301                                 if (method->is_inflated) {
8302                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8303                                         CHECK_CFG_ERROR;
8304                                 }
8305                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8306                                         !mono_method_can_access_method (method, cil_method))
8307                                         emit_method_access_failure (cfg, method, cil_method);
8308                         }
8309
8310                         if (mono_security_core_clr_enabled ())
8311                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8312
8313                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8314                                 /* MS.NET seems to silently convert this to a callvirt */
8315                                 virtual_ = 1;
8316
8317                         {
8318                                 /*
8319                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8320                                  * converts to a callvirt.
8321                                  *
8322                                  * tests/bug-515884.il is an example of this behavior
8323                                  */
8324                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8325                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8326                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8327                                         virtual_ = 1;
8328                         }
8329
8330                         if (!cmethod->klass->inited)
8331                                 if (!mono_class_init (cmethod->klass))
8332                                         TYPE_LOAD_ERROR (cmethod->klass);
8333
8334                         fsig = mono_method_signature (cmethod);
8335                         if (!fsig)
8336                                 LOAD_ERROR;
8337                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8338                                 mini_class_is_system_array (cmethod->klass)) {
8339                                 array_rank = cmethod->klass->rank;
8340                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8341                                 direct_icall = TRUE;
8342                         } else if (fsig->pinvoke) {
8343                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8344                                 fsig = mono_method_signature (wrapper);
8345                         } else if (constrained_class) {
8346                         } else {
8347                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8348                                 CHECK_CFG_ERROR;
8349                         }
8350
8351                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8352                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8353
8354                         /* See code below */
8355                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8356                                 MonoBasicBlock *tbb;
8357
8358                                 GET_BBLOCK (cfg, tbb, ip + 5);
8359                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8360                                         /*
8361                                          * We want to extend the try block to cover the call, but we can't do it if the
8362                                          * call is made directly since its followed by an exception check.
8363                                          */
8364                                         direct_icall = FALSE;
8365                                 }
8366                         }
8367
8368                         mono_save_token_info (cfg, image, token, cil_method);
8369
8370                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8371                                 need_seq_point = TRUE;
8372
8373                         /* Don't support calls made using type arguments for now */
8374                         /*
8375                           if (cfg->gsharedvt) {
8376                           if (mini_is_gsharedvt_signature (fsig))
8377                           GSHAREDVT_FAILURE (*ip);
8378                           }
8379                         */
8380
8381                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8382                                 g_assert_not_reached ();
8383
8384                         n = fsig->param_count + fsig->hasthis;
8385
8386                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8387                                 UNVERIFIED;
8388
8389                         if (!cfg->gshared)
8390                                 g_assert (!mono_method_check_context_used (cmethod));
8391
8392                         CHECK_STACK (n);
8393
8394                         //g_assert (!virtual_ || fsig->hasthis);
8395
8396                         sp -= n;
8397
8398                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8399                                 cfg->cbb->out_of_line = TRUE;
8400
8401                         /*
8402                          * We have the `constrained.' prefix opcode.
8403                          */
8404                         if (constrained_class) {
8405                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8406                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8407                                                 /* The 'Own method' case below */
8408                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8409                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8410                                         } else {
8411                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8412                                                 CHECK_CFG_EXCEPTION;
8413                                                 g_assert (ins);
8414                                                 goto call_end;
8415                                         }
8416                                 }
8417
8418                                 if (constrained_partial_call) {
8419                                         gboolean need_box = TRUE;
8420
8421                                         /*
8422                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8423                                          * called method is not known at compile time either. The called method could end up being
8424                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8425                                          * to box the receiver.
8426                                          * A simple solution would be to box always and make a normal virtual call, but that would
8427                                          * be bad performance wise.
8428                                          */
8429                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8430                                                 /*
8431                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8432                                                  */
8433                                                 need_box = FALSE;
8434                                         }
8435
8436                                         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)) {
8437                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8438                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8439                                                 ins->klass = constrained_class;
8440                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8441                                                 CHECK_CFG_EXCEPTION;
8442                                         } else if (need_box) {
8443                                                 MonoInst *box_type;
8444                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8445                                                 MonoInst *nonbox_call;
8446
8447                                                 /*
8448                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8449                                                  * if needed.
8450                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8451                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8452                                                  */
8453                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8454
8455                                                 NEW_BBLOCK (cfg, is_ref_bb);
8456                                                 NEW_BBLOCK (cfg, end_bb);
8457
8458                                                 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);
8459                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8460                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8461
8462                                                 /* Non-ref case */
8463                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8464
8465                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8466
8467                                                 /* Ref case */
8468                                                 MONO_START_BB (cfg, is_ref_bb);
8469                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8470                                                 ins->klass = constrained_class;
8471                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8472                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8473
8474                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8475
8476                                                 MONO_START_BB (cfg, end_bb);
8477                                                 cfg->cbb = end_bb;
8478
8479                                                 nonbox_call->dreg = ins->dreg;
8480                                                 goto call_end;
8481                                         } else {
8482                                                 g_assert (mono_class_is_interface (cmethod->klass));
8483                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8484                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8485                                                 goto call_end;
8486                                         }
8487                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8488                                         /*
8489                                          * The type parameter is instantiated as a valuetype,
8490                                          * but that type doesn't override the method we're
8491                                          * calling, so we need to box `this'.
8492                                          */
8493                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8494                                         ins->klass = constrained_class;
8495                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8496                                         CHECK_CFG_EXCEPTION;
8497                                 } else if (!constrained_class->valuetype) {
8498                                         int dreg = alloc_ireg_ref (cfg);
8499
8500                                         /*
8501                                          * The type parameter is instantiated as a reference
8502                                          * type.  We have a managed pointer on the stack, so
8503                                          * we need to dereference it here.
8504                                          */
8505                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8506                                         ins->type = STACK_OBJ;
8507                                         sp [0] = ins;
8508                                 } else {
8509                                         if (cmethod->klass->valuetype) {
8510                                                 /* Own method */
8511                                         } else {
8512                                                 /* Interface method */
8513                                                 int ioffset, slot;
8514
8515                                                 mono_class_setup_vtable (constrained_class);
8516                                                 CHECK_TYPELOAD (constrained_class);
8517                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8518                                                 if (ioffset == -1)
8519                                                         TYPE_LOAD_ERROR (constrained_class);
8520                                                 slot = mono_method_get_vtable_slot (cmethod);
8521                                                 if (slot == -1)
8522                                                         TYPE_LOAD_ERROR (cmethod->klass);
8523                                                 cmethod = constrained_class->vtable [ioffset + slot];
8524
8525                                                 if (cmethod->klass == mono_defaults.enum_class) {
8526                                                         /* Enum implements some interfaces, so treat this as the first case */
8527                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8528                                                         ins->klass = constrained_class;
8529                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8530                                                         CHECK_CFG_EXCEPTION;
8531                                                 }
8532                                         }
8533                                         virtual_ = 0;
8534                                 }
8535                                 constrained_class = NULL;
8536                         }
8537
8538                         if (check_call_signature (cfg, fsig, sp))
8539                                 UNVERIFIED;
8540
8541                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8542                                 delegate_invoke = TRUE;
8543
8544                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8545                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8546                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8547                                         emit_widen = FALSE;
8548                                 }
8549
8550                                 goto call_end;
8551                         }
8552
8553                         /*
8554                          * If the callee is a shared method, then its static cctor
8555                          * might not get called after the call was patched.
8556                          */
8557                         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)) {
8558                                 emit_class_init (cfg, cmethod->klass);
8559                                 CHECK_TYPELOAD (cmethod->klass);
8560                         }
8561
8562                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8563
8564                         if (cfg->gshared) {
8565                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8566
8567                                 context_used = mini_method_check_context_used (cfg, cmethod);
8568
8569                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8570                                         /* Generic method interface
8571                                            calls are resolved via a
8572                                            helper function and don't
8573                                            need an imt. */
8574                                         if (!cmethod_context || !cmethod_context->method_inst)
8575                                                 pass_imt_from_rgctx = TRUE;
8576                                 }
8577
8578                                 /*
8579                                  * If a shared method calls another
8580                                  * shared method then the caller must
8581                                  * have a generic sharing context
8582                                  * because the magic trampoline
8583                                  * requires it.  FIXME: We shouldn't
8584                                  * have to force the vtable/mrgctx
8585                                  * variable here.  Instead there
8586                                  * should be a flag in the cfg to
8587                                  * request a generic sharing context.
8588                                  */
8589                                 if (context_used &&
8590                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8591                                         mono_get_vtable_var (cfg);
8592                         }
8593
8594                         if (pass_vtable) {
8595                                 if (context_used) {
8596                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8597                                 } else {
8598                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8599
8600                                         CHECK_TYPELOAD (cmethod->klass);
8601                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8602                                 }
8603                         }
8604
8605                         if (pass_mrgctx) {
8606                                 g_assert (!vtable_arg);
8607
8608                                 if (!cfg->compile_aot) {
8609                                         /*
8610                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8611                                          * for type load errors before.
8612                                          */
8613                                         mono_class_setup_vtable (cmethod->klass);
8614                                         CHECK_TYPELOAD (cmethod->klass);
8615                                 }
8616
8617                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8618
8619                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8620                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8621                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8622                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8623                                         if (virtual_)
8624                                                 check_this = TRUE;
8625                                         virtual_ = 0;
8626                                 }
8627                         }
8628
8629                         if (pass_imt_from_rgctx) {
8630                                 g_assert (!pass_vtable);
8631
8632                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8633                                         cmethod, MONO_RGCTX_INFO_METHOD);
8634                         }
8635
8636                         if (check_this)
8637                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8638
8639                         /* Calling virtual generic methods */
8640                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8641                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8642                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8643                             fsig->generic_param_count &&
8644                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8645                                 !cfg->llvm_only) {
8646                                 MonoInst *this_temp, *this_arg_temp, *store;
8647                                 MonoInst *iargs [4];
8648
8649                                 g_assert (fsig->is_inflated);
8650
8651                                 /* Prevent inlining of methods that contain indirect calls */
8652                                 INLINE_FAILURE ("virtual generic call");
8653
8654                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8655                                         GSHAREDVT_FAILURE (*ip);
8656
8657                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8658                                         g_assert (!imt_arg);
8659                                         if (!context_used)
8660                                                 g_assert (cmethod->is_inflated);
8661                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8662                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8663                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8664                                 } else {
8665                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8666                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8667                                         MONO_ADD_INS (cfg->cbb, store);
8668
8669                                         /* FIXME: This should be a managed pointer */
8670                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8671
8672                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8673                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8674                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8675                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8676                                         addr = mono_emit_jit_icall (cfg,
8677                                                                                                 mono_helper_compile_generic_method, iargs);
8678
8679                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8680
8681                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8682                                 }
8683
8684                                 goto call_end;
8685                         }
8686
8687                         /*
8688                          * Implement a workaround for the inherent races involved in locking:
8689                          * Monitor.Enter ()
8690                          * try {
8691                          * } finally {
8692                          *    Monitor.Exit ()
8693                          * }
8694                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8695                          * try block, the Exit () won't be executed, see:
8696                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8697                          * To work around this, we extend such try blocks to include the last x bytes
8698                          * of the Monitor.Enter () call.
8699                          */
8700                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8701                                 MonoBasicBlock *tbb;
8702
8703                                 GET_BBLOCK (cfg, tbb, ip + 5);
8704                                 /*
8705                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8706                                  * from Monitor.Enter like ArgumentNullException.
8707                                  */
8708                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8709                                         /* Mark this bblock as needing to be extended */
8710                                         tbb->extend_try_block = TRUE;
8711                                 }
8712                         }
8713
8714                         /* Conversion to a JIT intrinsic */
8715                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8716                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8717                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8718                                         emit_widen = FALSE;
8719                                 }
8720                                 goto call_end;
8721                         }
8722                         CHECK_CFG_ERROR;
8723
8724                         /* Inlining */
8725                         if ((cfg->opt & MONO_OPT_INLINE) &&
8726                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8727                             mono_method_check_inlining (cfg, cmethod)) {
8728                                 int costs;
8729                                 gboolean always = FALSE;
8730
8731                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8732                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8733                                         /* Prevent inlining of methods that call wrappers */
8734                                         INLINE_FAILURE ("wrapper call");
8735                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8736                                         always = TRUE;
8737                                 }
8738
8739                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8740                                 if (costs) {
8741                                         cfg->real_offset += 5;
8742
8743                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8744                                                 /* *sp is already set by inline_method */
8745                                                 sp++;
8746                                                 push_res = FALSE;
8747                                         }
8748
8749                                         inline_costs += costs;
8750
8751                                         goto call_end;
8752                                 }
8753                         }
8754
8755                         /* Tail recursion elimination */
8756                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8757                                 gboolean has_vtargs = FALSE;
8758                                 int i;
8759
8760                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8761                                 INLINE_FAILURE ("tail call");
8762
8763                                 /* keep it simple */
8764                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8765                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8766                                                 has_vtargs = TRUE;
8767                                 }
8768
8769                                 if (!has_vtargs) {
8770                                         if (need_seq_point) {
8771                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8772                                                 need_seq_point = FALSE;
8773                                         }
8774                                         for (i = 0; i < n; ++i)
8775                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8776                                         MONO_INST_NEW (cfg, ins, OP_BR);
8777                                         MONO_ADD_INS (cfg->cbb, ins);
8778                                         tblock = start_bblock->out_bb [0];
8779                                         link_bblock (cfg, cfg->cbb, tblock);
8780                                         ins->inst_target_bb = tblock;
8781                                         start_new_bblock = 1;
8782
8783                                         /* skip the CEE_RET, too */
8784                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8785                                                 skip_ret = TRUE;
8786                                         push_res = FALSE;
8787                                         goto call_end;
8788                                 }
8789                         }
8790
8791                         inline_costs += 10 * num_calls++;
8792
8793                         /*
8794                          * Synchronized wrappers.
8795                          * Its hard to determine where to replace a method with its synchronized
8796                          * wrapper without causing an infinite recursion. The current solution is
8797                          * to add the synchronized wrapper in the trampolines, and to
8798                          * change the called method to a dummy wrapper, and resolve that wrapper
8799                          * to the real method in mono_jit_compile_method ().
8800                          */
8801                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8802                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8803                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8804                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8805                         }
8806
8807                         /*
8808                          * Making generic calls out of gsharedvt methods.
8809                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8810                          * patching gshared method addresses into a gsharedvt method.
8811                          */
8812                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8813                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8814                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8815                                 MonoRgctxInfoType info_type;
8816
8817                                 if (virtual_) {
8818                                         //if (mono_class_is_interface (cmethod->klass))
8819                                                 //GSHAREDVT_FAILURE (*ip);
8820                                         // disable for possible remoting calls
8821                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8822                                                 GSHAREDVT_FAILURE (*ip);
8823                                         if (fsig->generic_param_count) {
8824                                                 /* virtual generic call */
8825                                                 g_assert (!imt_arg);
8826                                                 /* Same as the virtual generic case above */
8827                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8828                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8829                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8830                                                 vtable_arg = NULL;
8831                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8832                                                 /* This can happen when we call a fully instantiated iface method */
8833                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8834                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8835                                                 vtable_arg = NULL;
8836                                         }
8837                                 }
8838
8839                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8840                                         keep_this_alive = sp [0];
8841
8842                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8843                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8844                                 else
8845                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8846                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8847
8848                                 if (cfg->llvm_only) {
8849                                         // FIXME: Avoid initializing vtable_arg
8850                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8851                                 } else {
8852                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8853                                 }
8854                                 goto call_end;
8855                         }
8856
8857                         /* Generic sharing */
8858
8859                         /*
8860                          * Use this if the callee is gsharedvt sharable too, since
8861                          * at runtime we might find an instantiation so the call cannot
8862                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8863                          */
8864                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8865                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8866                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8867                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8868                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8869                                 INLINE_FAILURE ("gshared");
8870
8871                                 g_assert (cfg->gshared && cmethod);
8872                                 g_assert (!addr);
8873
8874                                 /*
8875                                  * We are compiling a call to a
8876                                  * generic method from shared code,
8877                                  * which means that we have to look up
8878                                  * the method in the rgctx and do an
8879                                  * indirect call.
8880                                  */
8881                                 if (fsig->hasthis)
8882                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8883
8884                                 if (cfg->llvm_only) {
8885                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8886                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8887                                         else
8888                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8889                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8890                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8891                                 } else {
8892                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8893                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8894                                 }
8895                                 goto call_end;
8896                         }
8897
8898                         /* Direct calls to icalls */
8899                         if (direct_icall) {
8900                                 MonoMethod *wrapper;
8901                                 int costs;
8902
8903                                 /* Inline the wrapper */
8904                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8905
8906                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8907                                 g_assert (costs > 0);
8908                                 cfg->real_offset += 5;
8909
8910                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8911                                         /* *sp is already set by inline_method */
8912                                         sp++;
8913                                         push_res = FALSE;
8914                                 }
8915
8916                                 inline_costs += costs;
8917
8918                                 goto call_end;
8919                         }
8920
8921                         /* Array methods */
8922                         if (array_rank) {
8923                                 MonoInst *addr;
8924
8925                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8926                                         MonoInst *val = sp [fsig->param_count];
8927
8928                                         if (val->type == STACK_OBJ) {
8929                                                 MonoInst *iargs [2];
8930
8931                                                 iargs [0] = sp [0];
8932                                                 iargs [1] = val;
8933
8934                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8935                                         }
8936
8937                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8938                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8939                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8940                                                 mini_emit_write_barrier (cfg, addr, val);
8941                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8942                                                 GSHAREDVT_FAILURE (*ip);
8943                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8944                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8945
8946                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8947                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8948                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8949                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8950                                         CHECK_TYPELOAD (cmethod->klass);
8951
8952                                         readonly = FALSE;
8953                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8954                                         ins = addr;
8955                                 } else {
8956                                         g_assert_not_reached ();
8957                                 }
8958
8959                                 emit_widen = FALSE;
8960                                 goto call_end;
8961                         }
8962
8963                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
8964                         if (ins)
8965                                 goto call_end;
8966
8967                         /* Tail prefix / tail call optimization */
8968
8969                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8970                         /* FIXME: runtime generic context pointer for jumps? */
8971                         /* FIXME: handle this for generic sharing eventually */
8972                         if ((ins_flag & MONO_INST_TAILCALL) &&
8973                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
8974                                 supported_tail_call = TRUE;
8975
8976                         if (supported_tail_call) {
8977                                 MonoCallInst *call;
8978
8979                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8980                                 INLINE_FAILURE ("tail call");
8981
8982                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8983
8984                                 if (cfg->backend->have_op_tail_call) {
8985                                         /* Handle tail calls similarly to normal calls */
8986                                         tail_call = TRUE;
8987                                 } else {
8988                                         emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
8989
8990                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8991                                         call->tail_call = TRUE;
8992                                         call->method = cmethod;
8993                                         call->signature = mono_method_signature (cmethod);
8994
8995                                         /*
8996                                          * We implement tail calls by storing the actual arguments into the
8997                                          * argument variables, then emitting a CEE_JMP.
8998                                          */
8999                                         for (i = 0; i < n; ++i) {
9000                                                 /* Prevent argument from being register allocated */
9001                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9002                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9003                                         }
9004                                         ins = (MonoInst*)call;
9005                                         ins->inst_p0 = cmethod;
9006                                         ins->inst_p1 = arg_array [0];
9007                                         MONO_ADD_INS (cfg->cbb, ins);
9008                                         link_bblock (cfg, cfg->cbb, end_bblock);
9009                                         start_new_bblock = 1;
9010
9011                                         // FIXME: Eliminate unreachable epilogs
9012
9013                                         /*
9014                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9015                                          * only reachable from this call.
9016                                          */
9017                                         GET_BBLOCK (cfg, tblock, ip + 5);
9018                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9019                                                 skip_ret = TRUE;
9020                                         push_res = FALSE;
9021
9022                                         goto call_end;
9023                                 }
9024                         }
9025
9026                         /*
9027                          * Virtual calls in llvm-only mode.
9028                          */
9029                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9030                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9031                                 goto call_end;
9032                         }
9033
9034                         /* Common call */
9035                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9036                                 INLINE_FAILURE ("call");
9037                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9038                                                                                           imt_arg, vtable_arg);
9039
9040                         if (tail_call && !cfg->llvm_only) {
9041                                 link_bblock (cfg, cfg->cbb, end_bblock);
9042                                 start_new_bblock = 1;
9043
9044                                 // FIXME: Eliminate unreachable epilogs
9045
9046                                 /*
9047                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9048                                  * only reachable from this call.
9049                                  */
9050                                 GET_BBLOCK (cfg, tblock, ip + 5);
9051                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9052                                         skip_ret = TRUE;
9053                                 push_res = FALSE;
9054                         }
9055
9056                         call_end:
9057
9058                         /* End of call, INS should contain the result of the call, if any */
9059
9060                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9061                                 g_assert (ins);
9062                                 if (emit_widen)
9063                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9064                                 else
9065                                         *sp++ = ins;
9066                         }
9067
9068                         if (keep_this_alive) {
9069                                 MonoInst *dummy_use;
9070
9071                                 /* See mono_emit_method_call_full () */
9072                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9073                         }
9074
9075                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9076                                 /*
9077                                  * Clang can convert these calls to tail calls which screw up the stack
9078                                  * walk. This happens even when the -fno-optimize-sibling-calls
9079                                  * option is passed to clang.
9080                                  * Work around this by emitting a dummy call.
9081                                  */
9082                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9083                         }
9084
9085                         CHECK_CFG_EXCEPTION;
9086
9087                         ip += 5;
9088                         if (skip_ret) {
9089                                 g_assert (*ip == CEE_RET);
9090                                 ip += 1;
9091                         }
9092                         ins_flag = 0;
9093                         constrained_class = NULL;
9094                         if (need_seq_point)
9095                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9096                         break;
9097                 }
9098                 case CEE_RET:
9099                         if (cfg->method != method) {
9100                                 /* return from inlined method */
9101                                 /*
9102                                  * If in_count == 0, that means the ret is unreachable due to
9103                                  * being preceeded by a throw. In that case, inline_method () will
9104                                  * handle setting the return value
9105                                  * (test case: test_0_inline_throw ()).
9106                                  */
9107                                 if (return_var && cfg->cbb->in_count) {
9108                                         MonoType *ret_type = mono_method_signature (method)->ret;
9109
9110                                         MonoInst *store;
9111                                         CHECK_STACK (1);
9112                                         --sp;
9113
9114                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9115                                                 UNVERIFIED;
9116
9117                                         //g_assert (returnvar != -1);
9118                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9119                                         cfg->ret_var_set = TRUE;
9120                                 }
9121                         } else {
9122                                 emit_instrumentation_call (cfg, mono_profiler_raise_method_leave, FALSE);
9123
9124                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9125                                         emit_pop_lmf (cfg);
9126
9127                                 if (cfg->ret) {
9128                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9129
9130                                         if (seq_points && !sym_seq_points) {
9131                                                 /*
9132                                                  * Place a seq point here too even through the IL stack is not
9133                                                  * empty, so a step over on
9134                                                  * call <FOO>
9135                                                  * ret
9136                                                  * will work correctly.
9137                                                  */
9138                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9139                                                 MONO_ADD_INS (cfg->cbb, ins);
9140                                         }
9141
9142                                         g_assert (!return_var);
9143                                         CHECK_STACK (1);
9144                                         --sp;
9145
9146                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9147                                                 UNVERIFIED;
9148
9149                                         emit_setret (cfg, *sp);
9150                                 }
9151                         }
9152                         if (sp != stack_start)
9153                                 UNVERIFIED;
9154                         MONO_INST_NEW (cfg, ins, OP_BR);
9155                         ip++;
9156                         ins->inst_target_bb = end_bblock;
9157                         MONO_ADD_INS (cfg->cbb, ins);
9158                         link_bblock (cfg, cfg->cbb, end_bblock);
9159                         start_new_bblock = 1;
9160                         break;
9161                 case CEE_BR_S:
9162                         CHECK_OPSIZE (2);
9163                         MONO_INST_NEW (cfg, ins, OP_BR);
9164                         ip++;
9165                         target = ip + 1 + (signed char)(*ip);
9166                         ++ip;
9167                         GET_BBLOCK (cfg, tblock, target);
9168                         link_bblock (cfg, cfg->cbb, tblock);
9169                         ins->inst_target_bb = tblock;
9170                         if (sp != stack_start) {
9171                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9172                                 sp = stack_start;
9173                                 CHECK_UNVERIFIABLE (cfg);
9174                         }
9175                         MONO_ADD_INS (cfg->cbb, ins);
9176                         start_new_bblock = 1;
9177                         inline_costs += BRANCH_COST;
9178                         break;
9179                 case CEE_BEQ_S:
9180                 case CEE_BGE_S:
9181                 case CEE_BGT_S:
9182                 case CEE_BLE_S:
9183                 case CEE_BLT_S:
9184                 case CEE_BNE_UN_S:
9185                 case CEE_BGE_UN_S:
9186                 case CEE_BGT_UN_S:
9187                 case CEE_BLE_UN_S:
9188                 case CEE_BLT_UN_S:
9189                         CHECK_OPSIZE (2);
9190                         CHECK_STACK (2);
9191                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9192                         ip++;
9193                         target = ip + 1 + *(signed char*)ip;
9194                         ip++;
9195
9196                         ADD_BINCOND (NULL);
9197
9198                         sp = stack_start;
9199                         inline_costs += BRANCH_COST;
9200                         break;
9201                 case CEE_BR:
9202                         CHECK_OPSIZE (5);
9203                         MONO_INST_NEW (cfg, ins, OP_BR);
9204                         ip++;
9205
9206                         target = ip + 4 + (gint32)read32(ip);
9207                         ip += 4;
9208                         GET_BBLOCK (cfg, tblock, target);
9209                         link_bblock (cfg, cfg->cbb, tblock);
9210                         ins->inst_target_bb = tblock;
9211                         if (sp != stack_start) {
9212                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9213                                 sp = stack_start;
9214                                 CHECK_UNVERIFIABLE (cfg);
9215                         }
9216
9217                         MONO_ADD_INS (cfg->cbb, ins);
9218
9219                         start_new_bblock = 1;
9220                         inline_costs += BRANCH_COST;
9221                         break;
9222                 case CEE_BRFALSE_S:
9223                 case CEE_BRTRUE_S:
9224                 case CEE_BRFALSE:
9225                 case CEE_BRTRUE: {
9226                         MonoInst *cmp;
9227                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9228                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9229                         guint32 opsize = is_short ? 1 : 4;
9230
9231                         CHECK_OPSIZE (opsize);
9232                         CHECK_STACK (1);
9233                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9234                                 UNVERIFIED;
9235                         ip ++;
9236                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9237                         ip += opsize;
9238
9239                         sp--;
9240
9241                         GET_BBLOCK (cfg, tblock, target);
9242                         link_bblock (cfg, cfg->cbb, tblock);
9243                         GET_BBLOCK (cfg, tblock, ip);
9244                         link_bblock (cfg, cfg->cbb, tblock);
9245
9246                         if (sp != stack_start) {
9247                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9248                                 CHECK_UNVERIFIABLE (cfg);
9249                         }
9250
9251                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9252                         cmp->sreg1 = sp [0]->dreg;
9253                         type_from_op (cfg, cmp, sp [0], NULL);
9254                         CHECK_TYPE (cmp);
9255
9256 #if SIZEOF_REGISTER == 4
9257                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9258                                 /* Convert it to OP_LCOMPARE */
9259                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9260                                 ins->type = STACK_I8;
9261                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9262                                 ins->inst_l = 0;
9263                                 MONO_ADD_INS (cfg->cbb, ins);
9264                                 cmp->opcode = OP_LCOMPARE;
9265                                 cmp->sreg2 = ins->dreg;
9266                         }
9267 #endif
9268                         MONO_ADD_INS (cfg->cbb, cmp);
9269
9270                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9271                         type_from_op (cfg, ins, sp [0], NULL);
9272                         MONO_ADD_INS (cfg->cbb, ins);
9273                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9274                         GET_BBLOCK (cfg, tblock, target);
9275                         ins->inst_true_bb = tblock;
9276                         GET_BBLOCK (cfg, tblock, ip);
9277                         ins->inst_false_bb = tblock;
9278                         start_new_bblock = 2;
9279
9280                         sp = stack_start;
9281                         inline_costs += BRANCH_COST;
9282                         break;
9283                 }
9284                 case CEE_BEQ:
9285                 case CEE_BGE:
9286                 case CEE_BGT:
9287                 case CEE_BLE:
9288                 case CEE_BLT:
9289                 case CEE_BNE_UN:
9290                 case CEE_BGE_UN:
9291                 case CEE_BGT_UN:
9292                 case CEE_BLE_UN:
9293                 case CEE_BLT_UN:
9294                         CHECK_OPSIZE (5);
9295                         CHECK_STACK (2);
9296                         MONO_INST_NEW (cfg, ins, *ip);
9297                         ip++;
9298                         target = ip + 4 + (gint32)read32(ip);
9299                         ip += 4;
9300
9301                         ADD_BINCOND (NULL);
9302
9303                         sp = stack_start;
9304                         inline_costs += BRANCH_COST;
9305                         break;
9306                 case CEE_SWITCH: {
9307                         MonoInst *src1;
9308                         MonoBasicBlock **targets;
9309                         MonoBasicBlock *default_bblock;
9310                         MonoJumpInfoBBTable *table;
9311                         int offset_reg = alloc_preg (cfg);
9312                         int target_reg = alloc_preg (cfg);
9313                         int table_reg = alloc_preg (cfg);
9314                         int sum_reg = alloc_preg (cfg);
9315                         gboolean use_op_switch;
9316
9317                         CHECK_OPSIZE (5);
9318                         CHECK_STACK (1);
9319                         n = read32 (ip + 1);
9320                         --sp;
9321                         src1 = sp [0];
9322                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9323                                 UNVERIFIED;
9324
9325                         ip += 5;
9326                         CHECK_OPSIZE (n * sizeof (guint32));
9327                         target = ip + n * sizeof (guint32);
9328
9329                         GET_BBLOCK (cfg, default_bblock, target);
9330                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9331
9332                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9333                         for (i = 0; i < n; ++i) {
9334                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9335                                 targets [i] = tblock;
9336                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9337                                 ip += 4;
9338                         }
9339
9340                         if (sp != stack_start) {
9341                                 /*
9342                                  * Link the current bb with the targets as well, so handle_stack_args
9343                                  * will set their in_stack correctly.
9344                                  */
9345                                 link_bblock (cfg, cfg->cbb, default_bblock);
9346                                 for (i = 0; i < n; ++i)
9347                                         link_bblock (cfg, cfg->cbb, targets [i]);
9348
9349                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9350                                 sp = stack_start;
9351                                 CHECK_UNVERIFIABLE (cfg);
9352
9353                                 /* Undo the links */
9354                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9355                                 for (i = 0; i < n; ++i)
9356                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9357                         }
9358
9359                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9360                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9361
9362                         for (i = 0; i < n; ++i)
9363                                 link_bblock (cfg, cfg->cbb, targets [i]);
9364
9365                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9366                         table->table = targets;
9367                         table->table_size = n;
9368
9369                         use_op_switch = FALSE;
9370 #ifdef TARGET_ARM
9371                         /* ARM implements SWITCH statements differently */
9372                         /* FIXME: Make it use the generic implementation */
9373                         if (!cfg->compile_aot)
9374                                 use_op_switch = TRUE;
9375 #endif
9376
9377                         if (COMPILE_LLVM (cfg))
9378                                 use_op_switch = TRUE;
9379
9380                         cfg->cbb->has_jump_table = 1;
9381
9382                         if (use_op_switch) {
9383                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9384                                 ins->sreg1 = src1->dreg;
9385                                 ins->inst_p0 = table;
9386                                 ins->inst_many_bb = targets;
9387                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9388                                 MONO_ADD_INS (cfg->cbb, ins);
9389                         } else {
9390                                 if (sizeof (gpointer) == 8)
9391                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9392                                 else
9393                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9394
9395 #if SIZEOF_REGISTER == 8
9396                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9397                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9398 #endif
9399
9400                                 if (cfg->compile_aot) {
9401                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9402                                 } else {
9403                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9404                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9405                                         ins->inst_p0 = table;
9406                                         ins->dreg = table_reg;
9407                                         MONO_ADD_INS (cfg->cbb, ins);
9408                                 }
9409
9410                                 /* FIXME: Use load_memindex */
9411                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9412                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9413                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9414                         }
9415                         start_new_bblock = 1;
9416                         inline_costs += (BRANCH_COST * 2);
9417                         break;
9418                 }
9419                 case CEE_LDIND_I1:
9420                 case CEE_LDIND_U1:
9421                 case CEE_LDIND_I2:
9422                 case CEE_LDIND_U2:
9423                 case CEE_LDIND_I4:
9424                 case CEE_LDIND_U4:
9425                 case CEE_LDIND_I8:
9426                 case CEE_LDIND_I:
9427                 case CEE_LDIND_R4:
9428                 case CEE_LDIND_R8:
9429                 case CEE_LDIND_REF:
9430                         CHECK_STACK (1);
9431                         --sp;
9432
9433                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9434                         *sp++ = ins;
9435                         ins_flag = 0;
9436                         ++ip;
9437                         break;
9438                 case CEE_STIND_REF:
9439                 case CEE_STIND_I1:
9440                 case CEE_STIND_I2:
9441                 case CEE_STIND_I4:
9442                 case CEE_STIND_I8:
9443                 case CEE_STIND_R4:
9444                 case CEE_STIND_R8:
9445                 case CEE_STIND_I:
9446                         CHECK_STACK (2);
9447                         sp -= 2;
9448
9449                         if (ins_flag & MONO_INST_VOLATILE) {
9450                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9451                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9452                         }
9453
9454                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9455                         ins->flags |= ins_flag;
9456                         ins_flag = 0;
9457
9458                         MONO_ADD_INS (cfg->cbb, ins);
9459
9460                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9461                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9462
9463                         inline_costs += 1;
9464                         ++ip;
9465                         break;
9466
9467                 case CEE_MUL:
9468                         CHECK_STACK (2);
9469
9470                         MONO_INST_NEW (cfg, ins, (*ip));
9471                         sp -= 2;
9472                         ins->sreg1 = sp [0]->dreg;
9473                         ins->sreg2 = sp [1]->dreg;
9474                         type_from_op (cfg, ins, sp [0], sp [1]);
9475                         CHECK_TYPE (ins);
9476                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9477
9478                         /* Use the immediate opcodes if possible */
9479                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9480                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9481                                 if (imm_opcode != -1) {
9482                                         ins->opcode = imm_opcode;
9483                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9484                                         ins->sreg2 = -1;
9485
9486                                         NULLIFY_INS (sp [1]);
9487                                 }
9488                         }
9489
9490                         MONO_ADD_INS ((cfg)->cbb, (ins));
9491
9492                         *sp++ = mono_decompose_opcode (cfg, ins);
9493                         ip++;
9494                         break;
9495                 case CEE_ADD:
9496                 case CEE_SUB:
9497                 case CEE_DIV:
9498                 case CEE_DIV_UN:
9499                 case CEE_REM:
9500                 case CEE_REM_UN:
9501                 case CEE_AND:
9502                 case CEE_OR:
9503                 case CEE_XOR:
9504                 case CEE_SHL:
9505                 case CEE_SHR:
9506                 case CEE_SHR_UN:
9507                         CHECK_STACK (2);
9508
9509                         MONO_INST_NEW (cfg, ins, (*ip));
9510                         sp -= 2;
9511                         ins->sreg1 = sp [0]->dreg;
9512                         ins->sreg2 = sp [1]->dreg;
9513                         type_from_op (cfg, ins, sp [0], sp [1]);
9514                         CHECK_TYPE (ins);
9515                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9516                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9517
9518                         /* FIXME: Pass opcode to is_inst_imm */
9519
9520                         /* Use the immediate opcodes if possible */
9521                         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)) {
9522                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9523                                 if (imm_opcode != -1) {
9524                                         ins->opcode = imm_opcode;
9525                                         if (sp [1]->opcode == OP_I8CONST) {
9526 #if SIZEOF_REGISTER == 8
9527                                                 ins->inst_imm = sp [1]->inst_l;
9528 #else
9529                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9530                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9531 #endif
9532                                         }
9533                                         else
9534                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9535                                         ins->sreg2 = -1;
9536
9537                                         /* Might be followed by an instruction added by add_widen_op */
9538                                         if (sp [1]->next == NULL)
9539                                                 NULLIFY_INS (sp [1]);
9540                                 }
9541                         }
9542                         MONO_ADD_INS ((cfg)->cbb, (ins));
9543
9544                         *sp++ = mono_decompose_opcode (cfg, ins);
9545                         ip++;
9546                         break;
9547                 case CEE_NEG:
9548                 case CEE_NOT:
9549                 case CEE_CONV_I1:
9550                 case CEE_CONV_I2:
9551                 case CEE_CONV_I4:
9552                 case CEE_CONV_R4:
9553                 case CEE_CONV_R8:
9554                 case CEE_CONV_U4:
9555                 case CEE_CONV_I8:
9556                 case CEE_CONV_U8:
9557                 case CEE_CONV_OVF_I8:
9558                 case CEE_CONV_OVF_U8:
9559                 case CEE_CONV_R_UN:
9560                         CHECK_STACK (1);
9561
9562                         /* Special case this earlier so we have long constants in the IR */
9563                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9564                                 int data = sp [-1]->inst_c0;
9565                                 sp [-1]->opcode = OP_I8CONST;
9566                                 sp [-1]->type = STACK_I8;
9567 #if SIZEOF_REGISTER == 8
9568                                 if ((*ip) == CEE_CONV_U8)
9569                                         sp [-1]->inst_c0 = (guint32)data;
9570                                 else
9571                                         sp [-1]->inst_c0 = data;
9572 #else
9573                                 sp [-1]->inst_ls_word = data;
9574                                 if ((*ip) == CEE_CONV_U8)
9575                                         sp [-1]->inst_ms_word = 0;
9576                                 else
9577                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9578 #endif
9579                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9580                         }
9581                         else {
9582                                 ADD_UNOP (*ip);
9583                         }
9584                         ip++;
9585                         break;
9586                 case CEE_CONV_OVF_I4:
9587                 case CEE_CONV_OVF_I1:
9588                 case CEE_CONV_OVF_I2:
9589                 case CEE_CONV_OVF_I:
9590                 case CEE_CONV_OVF_U:
9591                         CHECK_STACK (1);
9592
9593                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9594                                 ADD_UNOP (CEE_CONV_OVF_I8);
9595                                 ADD_UNOP (*ip);
9596                         } else {
9597                                 ADD_UNOP (*ip);
9598                         }
9599                         ip++;
9600                         break;
9601                 case CEE_CONV_OVF_U1:
9602                 case CEE_CONV_OVF_U2:
9603                 case CEE_CONV_OVF_U4:
9604                         CHECK_STACK (1);
9605
9606                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9607                                 ADD_UNOP (CEE_CONV_OVF_U8);
9608                                 ADD_UNOP (*ip);
9609                         } else {
9610                                 ADD_UNOP (*ip);
9611                         }
9612                         ip++;
9613                         break;
9614                 case CEE_CONV_OVF_I1_UN:
9615                 case CEE_CONV_OVF_I2_UN:
9616                 case CEE_CONV_OVF_I4_UN:
9617                 case CEE_CONV_OVF_I8_UN:
9618                 case CEE_CONV_OVF_U1_UN:
9619                 case CEE_CONV_OVF_U2_UN:
9620                 case CEE_CONV_OVF_U4_UN:
9621                 case CEE_CONV_OVF_U8_UN:
9622                 case CEE_CONV_OVF_I_UN:
9623                 case CEE_CONV_OVF_U_UN:
9624                 case CEE_CONV_U2:
9625                 case CEE_CONV_U1:
9626                 case CEE_CONV_I:
9627                 case CEE_CONV_U:
9628                         CHECK_STACK (1);
9629                         ADD_UNOP (*ip);
9630                         CHECK_CFG_EXCEPTION;
9631                         ip++;
9632                         break;
9633                 case CEE_ADD_OVF:
9634                 case CEE_ADD_OVF_UN:
9635                 case CEE_MUL_OVF:
9636                 case CEE_MUL_OVF_UN:
9637                 case CEE_SUB_OVF:
9638                 case CEE_SUB_OVF_UN:
9639                         CHECK_STACK (2);
9640                         ADD_BINOP (*ip);
9641                         ip++;
9642                         break;
9643                 case CEE_CPOBJ:
9644                         GSHAREDVT_FAILURE (*ip);
9645                         CHECK_OPSIZE (5);
9646                         CHECK_STACK (2);
9647                         token = read32 (ip + 1);
9648                         klass = mini_get_class (method, token, generic_context);
9649                         CHECK_TYPELOAD (klass);
9650                         sp -= 2;
9651                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9652                         ins_flag = 0;
9653                         ip += 5;
9654                         break;
9655                 case CEE_LDOBJ: {
9656                         int loc_index = -1;
9657                         int stloc_len = 0;
9658
9659                         CHECK_OPSIZE (5);
9660                         CHECK_STACK (1);
9661                         --sp;
9662                         token = read32 (ip + 1);
9663                         klass = mini_get_class (method, token, generic_context);
9664                         CHECK_TYPELOAD (klass);
9665
9666                         /* Optimize the common ldobj+stloc combination */
9667                         switch (ip [5]) {
9668                         case CEE_STLOC_S:
9669                                 loc_index = ip [6];
9670                                 stloc_len = 2;
9671                                 break;
9672                         case CEE_STLOC_0:
9673                         case CEE_STLOC_1:
9674                         case CEE_STLOC_2:
9675                         case CEE_STLOC_3:
9676                                 loc_index = ip [5] - CEE_STLOC_0;
9677                                 stloc_len = 1;
9678                                 break;
9679                         default:
9680                                 break;
9681                         }
9682
9683                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9684                                 CHECK_LOCAL (loc_index);
9685
9686                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9687                                 ins->dreg = cfg->locals [loc_index]->dreg;
9688                                 ins->flags |= ins_flag;
9689                                 ip += 5;
9690                                 ip += stloc_len;
9691                                 if (ins_flag & MONO_INST_VOLATILE) {
9692                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9693                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9694                                 }
9695                                 ins_flag = 0;
9696                                 break;
9697                         }
9698
9699                         /* Optimize the ldobj+stobj combination */
9700                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9701                                 CHECK_STACK (1);
9702
9703                                 sp --;
9704
9705                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9706
9707                                 ip += 5 + 5;
9708                                 ins_flag = 0;
9709                                 break;
9710                         }
9711
9712                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9713                         *sp++ = ins;
9714
9715                         ip += 5;
9716                         ins_flag = 0;
9717                         inline_costs += 1;
9718                         break;
9719                 }
9720                 case CEE_LDSTR:
9721                         CHECK_STACK_OVF (1);
9722                         CHECK_OPSIZE (5);
9723                         n = read32 (ip + 1);
9724
9725                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9726                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9727                                 ins->type = STACK_OBJ;
9728                                 *sp = ins;
9729                         }
9730                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9731                                 MonoInst *iargs [1];
9732                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9733
9734                                 if (cfg->compile_aot)
9735                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9736                                 else
9737                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9738                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9739                         } else {
9740                                 if (cfg->opt & MONO_OPT_SHARED) {
9741                                         MonoInst *iargs [3];
9742
9743                                         if (cfg->compile_aot) {
9744                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9745                                         }
9746                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9747                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9748                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9749                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9750                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9751                                         CHECK_CFG_ERROR;
9752                                 } else {
9753                                         if (cfg->cbb->out_of_line) {
9754                                                 MonoInst *iargs [2];
9755
9756                                                 if (image == mono_defaults.corlib) {
9757                                                         /*
9758                                                          * Avoid relocations in AOT and save some space by using a
9759                                                          * version of helper_ldstr specialized to mscorlib.
9760                                                          */
9761                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9762                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9763                                                 } else {
9764                                                         /* Avoid creating the string object */
9765                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9766                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9767                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9768                                                 }
9769                                         }
9770                                         else
9771                                         if (cfg->compile_aot) {
9772                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9773                                                 *sp = ins;
9774                                                 MONO_ADD_INS (cfg->cbb, ins);
9775                                         }
9776                                         else {
9777                                                 NEW_PCONST (cfg, ins, NULL);
9778                                                 ins->type = STACK_OBJ;
9779                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9780                                                 CHECK_CFG_ERROR;
9781
9782                                                 if (!ins->inst_p0)
9783                                                         OUT_OF_MEMORY_FAILURE;
9784
9785                                                 *sp = ins;
9786                                                 MONO_ADD_INS (cfg->cbb, ins);
9787                                         }
9788                                 }
9789                         }
9790
9791                         sp++;
9792                         ip += 5;
9793                         break;
9794                 case CEE_NEWOBJ: {
9795                         MonoInst *iargs [2];
9796                         MonoMethodSignature *fsig;
9797                         MonoInst this_ins;
9798                         MonoInst *alloc;
9799                         MonoInst *vtable_arg = NULL;
9800
9801                         CHECK_OPSIZE (5);
9802                         token = read32 (ip + 1);
9803                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9804                         CHECK_CFG_ERROR;
9805
9806                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9807                         CHECK_CFG_ERROR;
9808
9809                         mono_save_token_info (cfg, image, token, cmethod);
9810
9811                         if (!mono_class_init (cmethod->klass))
9812                                 TYPE_LOAD_ERROR (cmethod->klass);
9813
9814                         context_used = mini_method_check_context_used (cfg, cmethod);
9815
9816                         if (!dont_verify && !cfg->skip_visibility) {
9817                                 MonoMethod *cil_method = cmethod;
9818                                 MonoMethod *target_method = cil_method;
9819
9820                                 if (method->is_inflated) {
9821                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9822                                         CHECK_CFG_ERROR;
9823                                 }
9824
9825                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9826                                         !mono_method_can_access_method (method, cil_method))
9827                                         emit_method_access_failure (cfg, method, cil_method);
9828                         }
9829
9830                         if (mono_security_core_clr_enabled ())
9831                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9832
9833                         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)) {
9834                                 emit_class_init (cfg, cmethod->klass);
9835                                 CHECK_TYPELOAD (cmethod->klass);
9836                         }
9837
9838                         /*
9839                         if (cfg->gsharedvt) {
9840                                 if (mini_is_gsharedvt_variable_signature (sig))
9841                                         GSHAREDVT_FAILURE (*ip);
9842                         }
9843                         */
9844
9845                         n = fsig->param_count;
9846                         CHECK_STACK (n);
9847
9848                         /*
9849                          * Generate smaller code for the common newobj <exception> instruction in
9850                          * argument checking code.
9851                          */
9852                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9853                                 is_exception_class (cmethod->klass) && n <= 2 &&
9854                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9855                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9856                                 MonoInst *iargs [3];
9857
9858                                 sp -= n;
9859
9860                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9861                                 switch (n) {
9862                                 case 0:
9863                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9864                                         break;
9865                                 case 1:
9866                                         iargs [1] = sp [0];
9867                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9868                                         break;
9869                                 case 2:
9870                                         iargs [1] = sp [0];
9871                                         iargs [2] = sp [1];
9872                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9873                                         break;
9874                                 default:
9875                                         g_assert_not_reached ();
9876                                 }
9877
9878                                 ip += 5;
9879                                 inline_costs += 5;
9880                                 break;
9881                         }
9882
9883                         /* move the args to allow room for 'this' in the first position */
9884                         while (n--) {
9885                                 --sp;
9886                                 sp [1] = sp [0];
9887                         }
9888
9889                         /* check_call_signature () requires sp[0] to be set */
9890                         this_ins.type = STACK_OBJ;
9891                         sp [0] = &this_ins;
9892                         if (check_call_signature (cfg, fsig, sp))
9893                                 UNVERIFIED;
9894
9895                         iargs [0] = NULL;
9896
9897                         if (mini_class_is_system_array (cmethod->klass)) {
9898                                 *sp = emit_get_rgctx_method (cfg, context_used,
9899                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9900
9901                                 /* Avoid varargs in the common case */
9902                                 if (fsig->param_count == 1)
9903                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9904                                 else if (fsig->param_count == 2)
9905                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9906                                 else if (fsig->param_count == 3)
9907                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9908                                 else if (fsig->param_count == 4)
9909                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9910                                 else
9911                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9912                         } else if (cmethod->string_ctor) {
9913                                 g_assert (!context_used);
9914                                 g_assert (!vtable_arg);
9915                                 /* we simply pass a null pointer */
9916                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9917                                 /* now call the string ctor */
9918                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9919                         } else {
9920                                 if (cmethod->klass->valuetype) {
9921                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9922                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9923                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9924
9925                                         alloc = NULL;
9926
9927                                         /*
9928                                          * The code generated by mini_emit_virtual_call () expects
9929                                          * iargs [0] to be a boxed instance, but luckily the vcall
9930                                          * will be transformed into a normal call there.
9931                                          */
9932                                 } else if (context_used) {
9933                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9934                                         *sp = alloc;
9935                                 } else {
9936                                         MonoVTable *vtable = NULL;
9937
9938                                         if (!cfg->compile_aot)
9939                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9940                                         CHECK_TYPELOAD (cmethod->klass);
9941
9942                                         /*
9943                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9944                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9945                                          * As a workaround, we call class cctors before allocating objects.
9946                                          */
9947                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9948                                                 emit_class_init (cfg, cmethod->klass);
9949                                                 if (cfg->verbose_level > 2)
9950                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9951                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9952                                         }
9953
9954                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9955                                         *sp = alloc;
9956                                 }
9957                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9958
9959                                 if (alloc)
9960                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9961
9962                                 /* Now call the actual ctor */
9963                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
9964                                 CHECK_CFG_EXCEPTION;
9965                         }
9966
9967                         if (alloc == NULL) {
9968                                 /* Valuetype */
9969                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9970                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9971                                 *sp++= ins;
9972                         } else {
9973                                 *sp++ = alloc;
9974                         }
9975
9976                         ip += 5;
9977                         inline_costs += 5;
9978                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
9979                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9980                         break;
9981                 }
9982                 case CEE_CASTCLASS:
9983                 case CEE_ISINST: {
9984                         CHECK_STACK (1);
9985                         --sp;
9986                         CHECK_OPSIZE (5);
9987                         token = read32 (ip + 1);
9988                         klass = mini_get_class (method, token, generic_context);
9989                         CHECK_TYPELOAD (klass);
9990                         if (sp [0]->type != STACK_OBJ)
9991                                 UNVERIFIED;
9992
9993                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
9994                         ins->dreg = alloc_preg (cfg);
9995                         ins->sreg1 = (*sp)->dreg;
9996                         ins->klass = klass;
9997                         ins->type = STACK_OBJ;
9998                         MONO_ADD_INS (cfg->cbb, ins);
9999
10000                         CHECK_CFG_EXCEPTION;
10001                         *sp++ = ins;
10002                         ip += 5;
10003
10004                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10005                         break;
10006                 }
10007                 case CEE_UNBOX_ANY: {
10008                         MonoInst *res, *addr;
10009
10010                         CHECK_STACK (1);
10011                         --sp;
10012                         CHECK_OPSIZE (5);
10013                         token = read32 (ip + 1);
10014                         klass = mini_get_class (method, token, generic_context);
10015                         CHECK_TYPELOAD (klass);
10016
10017                         mono_save_token_info (cfg, image, token, klass);
10018
10019                         context_used = mini_class_check_context_used (cfg, klass);
10020
10021                         if (mini_is_gsharedvt_klass (klass)) {
10022                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10023                                 inline_costs += 2;
10024                         } else if (generic_class_is_reference_type (cfg, klass)) {
10025                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10026                                         EMIT_NEW_PCONST (cfg, res, NULL);
10027                                         res->type = STACK_OBJ;
10028                                 } else {
10029                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10030                                         res->dreg = alloc_preg (cfg);
10031                                         res->sreg1 = (*sp)->dreg;
10032                                         res->klass = klass;
10033                                         res->type = STACK_OBJ;
10034                                         MONO_ADD_INS (cfg->cbb, res);
10035                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10036                                 }
10037                         } else if (mono_class_is_nullable (klass)) {
10038                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10039                         } else {
10040                                 addr = handle_unbox (cfg, klass, sp, context_used);
10041                                 /* LDOBJ */
10042                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10043                                 res = ins;
10044                                 inline_costs += 2;
10045                         }
10046
10047                         *sp ++ = res;
10048                         ip += 5;
10049                         break;
10050                 }
10051                 case CEE_BOX: {
10052                         MonoInst *val;
10053                         MonoClass *enum_class;
10054                         MonoMethod *has_flag;
10055
10056                         CHECK_STACK (1);
10057                         --sp;
10058                         val = *sp;
10059                         CHECK_OPSIZE (5);
10060                         token = read32 (ip + 1);
10061                         klass = mini_get_class (method, token, generic_context);
10062                         CHECK_TYPELOAD (klass);
10063
10064                         mono_save_token_info (cfg, image, token, klass);
10065
10066                         context_used = mini_class_check_context_used (cfg, klass);
10067
10068                         if (generic_class_is_reference_type (cfg, klass)) {
10069                                 *sp++ = val;
10070                                 ip += 5;
10071                                 break;
10072                         }
10073
10074                         if (klass == mono_defaults.void_class)
10075                                 UNVERIFIED;
10076                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10077                                 UNVERIFIED;
10078                         /* frequent check in generic code: box (struct), brtrue */
10079
10080                         /*
10081                          * Look for:
10082                          *
10083                          *   <push int/long ptr>
10084                          *   <push int/long>
10085                          *   box MyFlags
10086                          *   constrained. MyFlags
10087                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10088                          *
10089                          * If we find this sequence and the operand types on box and constrained
10090                          * are equal, we can emit a specialized instruction sequence instead of
10091                          * the very slow HasFlag () call.
10092                          */
10093                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10094                             /* Cheap checks first. */
10095                             ip + 5 + 6 + 5 < end &&
10096                             ip [5] == CEE_PREFIX1 &&
10097                             ip [6] == CEE_CONSTRAINED_ &&
10098                             ip [11] == CEE_CALLVIRT &&
10099                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10100                             mono_class_is_enum (klass) &&
10101                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10102                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10103                             has_flag->klass == mono_defaults.enum_class &&
10104                             !strcmp (has_flag->name, "HasFlag") &&
10105                             has_flag->signature->hasthis &&
10106                             has_flag->signature->param_count == 1) {
10107                                 CHECK_TYPELOAD (enum_class);
10108
10109                                 if (enum_class == klass) {
10110                                         MonoInst *enum_this, *enum_flag;
10111
10112                                         ip += 5 + 6 + 5;
10113                                         --sp;
10114
10115                                         enum_this = sp [0];
10116                                         enum_flag = sp [1];
10117
10118                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10119                                         break;
10120                                 }
10121                         }
10122
10123                         // FIXME: LLVM can't handle the inconsistent bb linking
10124                         if (!mono_class_is_nullable (klass) &&
10125                                 !mini_is_gsharedvt_klass (klass) &&
10126                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10127                                 (ip [5] == CEE_BRTRUE ||
10128                                  ip [5] == CEE_BRTRUE_S ||
10129                                  ip [5] == CEE_BRFALSE ||
10130                                  ip [5] == CEE_BRFALSE_S)) {
10131                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10132                                 int dreg;
10133                                 MonoBasicBlock *true_bb, *false_bb;
10134
10135                                 ip += 5;
10136
10137                                 if (cfg->verbose_level > 3) {
10138                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10139                                         printf ("<box+brtrue opt>\n");
10140                                 }
10141
10142                                 switch (*ip) {
10143                                 case CEE_BRTRUE_S:
10144                                 case CEE_BRFALSE_S:
10145                                         CHECK_OPSIZE (2);
10146                                         ip++;
10147                                         target = ip + 1 + (signed char)(*ip);
10148                                         ip++;
10149                                         break;
10150                                 case CEE_BRTRUE:
10151                                 case CEE_BRFALSE:
10152                                         CHECK_OPSIZE (5);
10153                                         ip++;
10154                                         target = ip + 4 + (gint)(read32 (ip));
10155                                         ip += 4;
10156                                         break;
10157                                 default:
10158                                         g_assert_not_reached ();
10159                                 }
10160
10161                                 /*
10162                                  * We need to link both bblocks, since it is needed for handling stack
10163                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10164                                  * Branching to only one of them would lead to inconsistencies, so
10165                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10166                                  */
10167                                 GET_BBLOCK (cfg, true_bb, target);
10168                                 GET_BBLOCK (cfg, false_bb, ip);
10169
10170                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10171                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10172
10173                                 if (sp != stack_start) {
10174                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10175                                         sp = stack_start;
10176                                         CHECK_UNVERIFIABLE (cfg);
10177                                 }
10178
10179                                 if (COMPILE_LLVM (cfg)) {
10180                                         dreg = alloc_ireg (cfg);
10181                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10182                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10183
10184                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10185                                 } else {
10186                                         /* The JIT can't eliminate the iconst+compare */
10187                                         MONO_INST_NEW (cfg, ins, OP_BR);
10188                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10189                                         MONO_ADD_INS (cfg->cbb, ins);
10190                                 }
10191
10192                                 start_new_bblock = 1;
10193                                 break;
10194                         }
10195
10196                         *sp++ = handle_box (cfg, val, klass, context_used);
10197
10198                         CHECK_CFG_EXCEPTION;
10199                         ip += 5;
10200                         inline_costs += 1;
10201                         break;
10202                 }
10203                 case CEE_UNBOX: {
10204                         CHECK_STACK (1);
10205                         --sp;
10206                         CHECK_OPSIZE (5);
10207                         token = read32 (ip + 1);
10208                         klass = mini_get_class (method, token, generic_context);
10209                         CHECK_TYPELOAD (klass);
10210
10211                         mono_save_token_info (cfg, image, token, klass);
10212
10213                         context_used = mini_class_check_context_used (cfg, klass);
10214
10215                         if (mono_class_is_nullable (klass)) {
10216                                 MonoInst *val;
10217
10218                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10219                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10220
10221                                 *sp++= ins;
10222                         } else {
10223                                 ins = handle_unbox (cfg, klass, sp, context_used);
10224                                 *sp++ = ins;
10225                         }
10226                         ip += 5;
10227                         inline_costs += 2;
10228                         break;
10229                 }
10230                 case CEE_LDFLD:
10231                 case CEE_LDFLDA:
10232                 case CEE_STFLD:
10233                 case CEE_LDSFLD:
10234                 case CEE_LDSFLDA:
10235                 case CEE_STSFLD: {
10236                         MonoClassField *field;
10237 #ifndef DISABLE_REMOTING
10238                         int costs;
10239 #endif
10240                         guint foffset;
10241                         gboolean is_instance;
10242                         int op;
10243                         gpointer addr = NULL;
10244                         gboolean is_special_static;
10245                         MonoType *ftype;
10246                         MonoInst *store_val = NULL;
10247                         MonoInst *thread_ins;
10248
10249                         op = *ip;
10250                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10251                         if (is_instance) {
10252                                 if (op == CEE_STFLD) {
10253                                         CHECK_STACK (2);
10254                                         sp -= 2;
10255                                         store_val = sp [1];
10256                                 } else {
10257                                         CHECK_STACK (1);
10258                                         --sp;
10259                                 }
10260                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10261                                         UNVERIFIED;
10262                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10263                                         UNVERIFIED;
10264                         } else {
10265                                 if (op == CEE_STSFLD) {
10266                                         CHECK_STACK (1);
10267                                         sp--;
10268                                         store_val = sp [0];
10269                                 }
10270                         }
10271
10272                         CHECK_OPSIZE (5);
10273                         token = read32 (ip + 1);
10274                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10275                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10276                                 klass = field->parent;
10277                         }
10278                         else {
10279                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10280                                 CHECK_CFG_ERROR;
10281                         }
10282                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10283                                 FIELD_ACCESS_FAILURE (method, field);
10284                         mono_class_init (klass);
10285
10286                         /* if the class is Critical then transparent code cannot access it's fields */
10287                         if (!is_instance && mono_security_core_clr_enabled ())
10288                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10289
10290                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10291                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10292                         if (mono_security_core_clr_enabled ())
10293                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10294                         */
10295
10296                         ftype = mono_field_get_type (field);
10297
10298                         /*
10299                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10300                          * the static case.
10301                          */
10302                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10303                                 switch (op) {
10304                                 case CEE_LDFLD:
10305                                         op = CEE_LDSFLD;
10306                                         break;
10307                                 case CEE_STFLD:
10308                                         op = CEE_STSFLD;
10309                                         break;
10310                                 case CEE_LDFLDA:
10311                                         op = CEE_LDSFLDA;
10312                                         break;
10313                                 default:
10314                                         g_assert_not_reached ();
10315                                 }
10316                                 is_instance = FALSE;
10317                         }
10318
10319                         context_used = mini_class_check_context_used (cfg, klass);
10320
10321                         /* INSTANCE CASE */
10322
10323                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10324                         if (op == CEE_STFLD) {
10325                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10326                                         UNVERIFIED;
10327 #ifndef DISABLE_REMOTING
10328                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10329                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10330                                         MonoInst *iargs [5];
10331
10332                                         GSHAREDVT_FAILURE (op);
10333
10334                                         iargs [0] = sp [0];
10335                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10336                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10337                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10338                                                     field->offset);
10339                                         iargs [4] = sp [1];
10340
10341                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10342                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10343                                                                                            iargs, ip, cfg->real_offset, TRUE);
10344                                                 CHECK_CFG_EXCEPTION;
10345                                                 g_assert (costs > 0);
10346
10347                                                 cfg->real_offset += 5;
10348
10349                                                 inline_costs += costs;
10350                                         } else {
10351                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10352                                         }
10353                                 } else
10354 #endif
10355                                 {
10356                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10357
10358                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10359
10360                                         if (ins_flag & MONO_INST_VOLATILE) {
10361                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10362                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10363                                         }
10364
10365                                         if (mini_is_gsharedvt_klass (klass)) {
10366                                                 MonoInst *offset_ins;
10367
10368                                                 context_used = mini_class_check_context_used (cfg, klass);
10369
10370                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10371                                                 /* The value is offset by 1 */
10372                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10373                                                 dreg = alloc_ireg_mp (cfg);
10374                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10375                                                 wbarrier_ptr_ins = ins;
10376                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10377                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10378                                         } else {
10379                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10380                                         }
10381                                         if (sp [0]->opcode != OP_LDADDR)
10382                                                 store->flags |= MONO_INST_FAULT;
10383
10384                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10385                                                 if (mini_is_gsharedvt_klass (klass)) {
10386                                                         g_assert (wbarrier_ptr_ins);
10387                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10388                                                 } else {
10389                                                         /* insert call to write barrier */
10390                                                         MonoInst *ptr;
10391                                                         int dreg;
10392
10393                                                         dreg = alloc_ireg_mp (cfg);
10394                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10395                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10396                                                 }
10397                                         }
10398
10399                                         store->flags |= ins_flag;
10400                                 }
10401                                 ins_flag = 0;
10402                                 ip += 5;
10403                                 break;
10404                         }
10405
10406 #ifndef DISABLE_REMOTING
10407                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10408                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10409                                 MonoInst *iargs [4];
10410
10411                                 GSHAREDVT_FAILURE (op);
10412
10413                                 iargs [0] = sp [0];
10414                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10415                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10416                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10417                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10418                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10419                                                                                    iargs, ip, cfg->real_offset, TRUE);
10420                                         CHECK_CFG_EXCEPTION;
10421                                         g_assert (costs > 0);
10422
10423                                         cfg->real_offset += 5;
10424
10425                                         *sp++ = iargs [0];
10426
10427                                         inline_costs += costs;
10428                                 } else {
10429                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10430                                         *sp++ = ins;
10431                                 }
10432                         } else
10433 #endif
10434                         if (is_instance) {
10435                                 if (sp [0]->type == STACK_VTYPE) {
10436                                         MonoInst *var;
10437
10438                                         /* Have to compute the address of the variable */
10439
10440                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10441                                         if (!var)
10442                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10443                                         else
10444                                                 g_assert (var->klass == klass);
10445
10446                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10447                                         sp [0] = ins;
10448                                 }
10449
10450                                 if (op == CEE_LDFLDA) {
10451                                         if (sp [0]->type == STACK_OBJ) {
10452                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10453                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10454                                         }
10455
10456                                         dreg = alloc_ireg_mp (cfg);
10457
10458                                         if (mini_is_gsharedvt_klass (klass)) {
10459                                                 MonoInst *offset_ins;
10460
10461                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10462                                                 /* The value is offset by 1 */
10463                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10464                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10465                                         } else {
10466                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10467                                         }
10468                                         ins->klass = mono_class_from_mono_type (field->type);
10469                                         ins->type = STACK_MP;
10470                                         *sp++ = ins;
10471                                 } else {
10472                                         MonoInst *load;
10473
10474                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10475
10476                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10477                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10478                                                 if (ins) {
10479                                                         *sp++ = ins;
10480                                                         ins_flag = 0;
10481                                                         ip += 5;
10482                                                         break;
10483                                                 }
10484                                         }
10485
10486                                         MonoInst *field_add_inst = sp [0];
10487                                         if (mini_is_gsharedvt_klass (klass)) {
10488                                                 MonoInst *offset_ins;
10489
10490                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10491                                                 /* The value is offset by 1 */
10492                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10493                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10494                                                 foffset = 0;
10495                                         }
10496
10497                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10498
10499                                         if (sp [0]->opcode != OP_LDADDR)
10500                                                 load->flags |= MONO_INST_FAULT;
10501                                         *sp++ = load;
10502                                 }
10503                         }
10504
10505                         if (is_instance) {
10506                                 ins_flag = 0;
10507                                 ip += 5;
10508                                 break;
10509                         }
10510
10511                         /* STATIC CASE */
10512                         context_used = mini_class_check_context_used (cfg, klass);
10513
10514                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10515                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10516                                 CHECK_CFG_ERROR;
10517                         }
10518
10519                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10520                          * to be called here.
10521                          */
10522                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10523                                 mono_class_vtable (cfg->domain, klass);
10524                                 CHECK_TYPELOAD (klass);
10525                         }
10526                         mono_domain_lock (cfg->domain);
10527                         if (cfg->domain->special_static_fields)
10528                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10529                         mono_domain_unlock (cfg->domain);
10530
10531                         is_special_static = mono_class_field_is_special_static (field);
10532
10533                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10534                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10535                         else
10536                                 thread_ins = NULL;
10537
10538                         /* Generate IR to compute the field address */
10539                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10540                                 /*
10541                                  * Fast access to TLS data
10542                                  * Inline version of get_thread_static_data () in
10543                                  * threads.c.
10544                                  */
10545                                 guint32 offset;
10546                                 int idx, static_data_reg, array_reg, dreg;
10547
10548                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10549                                         GSHAREDVT_FAILURE (op);
10550
10551                                 static_data_reg = alloc_ireg (cfg);
10552                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10553
10554                                 if (cfg->compile_aot) {
10555                                         int offset_reg, offset2_reg, idx_reg;
10556
10557                                         /* For TLS variables, this will return the TLS offset */
10558                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10559                                         offset_reg = ins->dreg;
10560                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10561                                         idx_reg = alloc_ireg (cfg);
10562                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10563                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10564                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10565                                         array_reg = alloc_ireg (cfg);
10566                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10567                                         offset2_reg = alloc_ireg (cfg);
10568                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10569                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10570                                         dreg = alloc_ireg (cfg);
10571                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10572                                 } else {
10573                                         offset = (gsize)addr & 0x7fffffff;
10574                                         idx = offset & 0x3f;
10575
10576                                         array_reg = alloc_ireg (cfg);
10577                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10578                                         dreg = alloc_ireg (cfg);
10579                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10580                                 }
10581                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10582                                         (cfg->compile_aot && is_special_static) ||
10583                                         (context_used && is_special_static)) {
10584                                 MonoInst *iargs [2];
10585
10586                                 g_assert (field->parent);
10587                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10588                                 if (context_used) {
10589                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10590                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10591                                 } else {
10592                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10593                                 }
10594                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10595                         } else if (context_used) {
10596                                 MonoInst *static_data;
10597
10598                                 /*
10599                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10600                                         method->klass->name_space, method->klass->name, method->name,
10601                                         depth, field->offset);
10602                                 */
10603
10604                                 if (mono_class_needs_cctor_run (klass, method))
10605                                         emit_class_init (cfg, klass);
10606
10607                                 /*
10608                                  * The pointer we're computing here is
10609                                  *
10610                                  *   super_info.static_data + field->offset
10611                                  */
10612                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10613                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10614
10615                                 if (mini_is_gsharedvt_klass (klass)) {
10616                                         MonoInst *offset_ins;
10617
10618                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10619                                         /* The value is offset by 1 */
10620                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10621                                         dreg = alloc_ireg_mp (cfg);
10622                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10623                                 } else if (field->offset == 0) {
10624                                         ins = static_data;
10625                                 } else {
10626                                         int addr_reg = mono_alloc_preg (cfg);
10627                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10628                                 }
10629                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10630                                 MonoInst *iargs [2];
10631
10632                                 g_assert (field->parent);
10633                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10634                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10635                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10636                         } else {
10637                                 MonoVTable *vtable = NULL;
10638
10639                                 if (!cfg->compile_aot)
10640                                         vtable = mono_class_vtable (cfg->domain, klass);
10641                                 CHECK_TYPELOAD (klass);
10642
10643                                 if (!addr) {
10644                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10645                                                 if (!(g_slist_find (class_inits, klass))) {
10646                                                         emit_class_init (cfg, klass);
10647                                                         if (cfg->verbose_level > 2)
10648                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10649                                                         class_inits = g_slist_prepend (class_inits, klass);
10650                                                 }
10651                                         } else {
10652                                                 if (cfg->run_cctors) {
10653                                                         /* This makes so that inline cannot trigger */
10654                                                         /* .cctors: too many apps depend on them */
10655                                                         /* running with a specific order... */
10656                                                         g_assert (vtable);
10657                                                         if (! vtable->initialized)
10658                                                                 INLINE_FAILURE ("class init");
10659                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10660                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10661                                                                 goto exception_exit;
10662                                                         }
10663                                                 }
10664                                         }
10665                                         if (cfg->compile_aot)
10666                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10667                                         else {
10668                                                 g_assert (vtable);
10669                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10670                                                 g_assert (addr);
10671                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10672                                         }
10673                                 } else {
10674                                         MonoInst *iargs [1];
10675                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10676                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10677                                 }
10678                         }
10679
10680                         /* Generate IR to do the actual load/store operation */
10681
10682                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10683                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10684                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10685                         }
10686
10687                         if (op == CEE_LDSFLDA) {
10688                                 ins->klass = mono_class_from_mono_type (ftype);
10689                                 ins->type = STACK_PTR;
10690                                 *sp++ = ins;
10691                         } else if (op == CEE_STSFLD) {
10692                                 MonoInst *store;
10693
10694                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10695                                 store->flags |= ins_flag;
10696                         } else {
10697                                 gboolean is_const = FALSE;
10698                                 MonoVTable *vtable = NULL;
10699                                 gpointer addr = NULL;
10700
10701                                 if (!context_used) {
10702                                         vtable = mono_class_vtable (cfg->domain, klass);
10703                                         CHECK_TYPELOAD (klass);
10704                                 }
10705                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10706                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10707                                         int ro_type = ftype->type;
10708                                         if (!addr)
10709                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10710                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10711                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10712                                         }
10713
10714                                         GSHAREDVT_FAILURE (op);
10715
10716                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10717                                         is_const = TRUE;
10718                                         switch (ro_type) {
10719                                         case MONO_TYPE_BOOLEAN:
10720                                         case MONO_TYPE_U1:
10721                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10722                                                 sp++;
10723                                                 break;
10724                                         case MONO_TYPE_I1:
10725                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10726                                                 sp++;
10727                                                 break;
10728                                         case MONO_TYPE_CHAR:
10729                                         case MONO_TYPE_U2:
10730                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10731                                                 sp++;
10732                                                 break;
10733                                         case MONO_TYPE_I2:
10734                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10735                                                 sp++;
10736                                                 break;
10737                                                 break;
10738                                         case MONO_TYPE_I4:
10739                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10740                                                 sp++;
10741                                                 break;
10742                                         case MONO_TYPE_U4:
10743                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10744                                                 sp++;
10745                                                 break;
10746                                         case MONO_TYPE_I:
10747                                         case MONO_TYPE_U:
10748                                         case MONO_TYPE_PTR:
10749                                         case MONO_TYPE_FNPTR:
10750                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10751                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10752                                                 sp++;
10753                                                 break;
10754                                         case MONO_TYPE_STRING:
10755                                         case MONO_TYPE_OBJECT:
10756                                         case MONO_TYPE_CLASS:
10757                                         case MONO_TYPE_SZARRAY:
10758                                         case MONO_TYPE_ARRAY:
10759                                                 if (!mono_gc_is_moving ()) {
10760                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10761                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10762                                                         sp++;
10763                                                 } else {
10764                                                         is_const = FALSE;
10765                                                 }
10766                                                 break;
10767                                         case MONO_TYPE_I8:
10768                                         case MONO_TYPE_U8:
10769                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10770                                                 sp++;
10771                                                 break;
10772                                         case MONO_TYPE_R4:
10773                                         case MONO_TYPE_R8:
10774                                         case MONO_TYPE_VALUETYPE:
10775                                         default:
10776                                                 is_const = FALSE;
10777                                                 break;
10778                                         }
10779                                 }
10780
10781                                 if (!is_const) {
10782                                         MonoInst *load;
10783
10784                                         CHECK_STACK_OVF (1);
10785
10786                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10787                                         load->flags |= ins_flag;
10788                                         ins_flag = 0;
10789                                         *sp++ = load;
10790                                 }
10791                         }
10792
10793                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10794                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10795                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10796                         }
10797
10798                         ins_flag = 0;
10799                         ip += 5;
10800                         break;
10801                 }
10802                 case CEE_STOBJ:
10803                         CHECK_STACK (2);
10804                         sp -= 2;
10805                         CHECK_OPSIZE (5);
10806                         token = read32 (ip + 1);
10807                         klass = mini_get_class (method, token, generic_context);
10808                         CHECK_TYPELOAD (klass);
10809
10810                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10811                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10812                         ins_flag = 0;
10813                         ip += 5;
10814                         inline_costs += 1;
10815                         break;
10816
10817                         /*
10818                          * Array opcodes
10819                          */
10820                 case CEE_NEWARR: {
10821                         MonoInst *len_ins;
10822                         const char *data_ptr;
10823                         int data_size = 0;
10824                         guint32 field_token;
10825
10826                         CHECK_STACK (1);
10827                         --sp;
10828
10829                         CHECK_OPSIZE (5);
10830                         token = read32 (ip + 1);
10831
10832                         klass = mini_get_class (method, token, generic_context);
10833                         CHECK_TYPELOAD (klass);
10834                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10835                                 UNVERIFIED;
10836
10837                         context_used = mini_class_check_context_used (cfg, klass);
10838
10839                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10840                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10841                                 ins->sreg1 = sp [0]->dreg;
10842                                 ins->type = STACK_I4;
10843                                 ins->dreg = alloc_ireg (cfg);
10844                                 MONO_ADD_INS (cfg->cbb, ins);
10845                                 *sp = mono_decompose_opcode (cfg, ins);
10846                         }
10847
10848                         if (context_used) {
10849                                 MonoInst *args [3];
10850                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10851                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10852
10853                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10854
10855                                 /* vtable */
10856                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10857                                         array_class, MONO_RGCTX_INFO_VTABLE);
10858                                 /* array len */
10859                                 args [1] = sp [0];
10860
10861                                 if (managed_alloc)
10862                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10863                                 else
10864                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10865                         } else {
10866                                 if (cfg->opt & MONO_OPT_SHARED) {
10867                                         /* Decompose now to avoid problems with references to the domainvar */
10868                                         MonoInst *iargs [3];
10869
10870                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10871                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10872                                         iargs [2] = sp [0];
10873
10874                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10875                                 } else {
10876                                         /* Decompose later since it is needed by abcrem */
10877                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10878                                         mono_class_vtable (cfg->domain, array_type);
10879                                         CHECK_TYPELOAD (array_type);
10880
10881                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10882                                         ins->dreg = alloc_ireg_ref (cfg);
10883                                         ins->sreg1 = sp [0]->dreg;
10884                                         ins->inst_newa_class = klass;
10885                                         ins->type = STACK_OBJ;
10886                                         ins->klass = array_type;
10887                                         MONO_ADD_INS (cfg->cbb, ins);
10888                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10889                                         cfg->cbb->has_array_access = TRUE;
10890
10891                                         /* Needed so mono_emit_load_get_addr () gets called */
10892                                         mono_get_got_var (cfg);
10893                                 }
10894                         }
10895
10896                         len_ins = sp [0];
10897                         ip += 5;
10898                         *sp++ = ins;
10899                         inline_costs += 1;
10900
10901                         /*
10902                          * we inline/optimize the initialization sequence if possible.
10903                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10904                          * for small sizes open code the memcpy
10905                          * ensure the rva field is big enough
10906                          */
10907                         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))) {
10908                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10909                                 MonoInst *iargs [3];
10910                                 int add_reg = alloc_ireg_mp (cfg);
10911
10912                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10913                                 if (cfg->compile_aot) {
10914                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10915                                 } else {
10916                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10917                                 }
10918                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10919                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10920                                 ip += 11;
10921                         }
10922
10923                         break;
10924                 }
10925                 case CEE_LDLEN:
10926                         CHECK_STACK (1);
10927                         --sp;
10928                         if (sp [0]->type != STACK_OBJ)
10929                                 UNVERIFIED;
10930
10931                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10932                         ins->dreg = alloc_preg (cfg);
10933                         ins->sreg1 = sp [0]->dreg;
10934                         ins->type = STACK_I4;
10935                         /* This flag will be inherited by the decomposition */
10936                         ins->flags |= MONO_INST_FAULT;
10937                         MONO_ADD_INS (cfg->cbb, ins);
10938                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10939                         cfg->cbb->has_array_access = TRUE;
10940                         ip ++;
10941                         *sp++ = ins;
10942                         break;
10943                 case CEE_LDELEMA:
10944                         CHECK_STACK (2);
10945                         sp -= 2;
10946                         CHECK_OPSIZE (5);
10947                         if (sp [0]->type != STACK_OBJ)
10948                                 UNVERIFIED;
10949
10950                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10951
10952                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10953                         CHECK_TYPELOAD (klass);
10954                         /* we need to make sure that this array is exactly the type it needs
10955                          * to be for correctness. the wrappers are lax with their usage
10956                          * so we need to ignore them here
10957                          */
10958                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10959                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10960                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10961                                 CHECK_TYPELOAD (array_class);
10962                         }
10963
10964                         readonly = FALSE;
10965                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10966                         *sp++ = ins;
10967                         ip += 5;
10968                         break;
10969                 case CEE_LDELEM:
10970                 case CEE_LDELEM_I1:
10971                 case CEE_LDELEM_U1:
10972                 case CEE_LDELEM_I2:
10973                 case CEE_LDELEM_U2:
10974                 case CEE_LDELEM_I4:
10975                 case CEE_LDELEM_U4:
10976                 case CEE_LDELEM_I8:
10977                 case CEE_LDELEM_I:
10978                 case CEE_LDELEM_R4:
10979                 case CEE_LDELEM_R8:
10980                 case CEE_LDELEM_REF: {
10981                         MonoInst *addr;
10982
10983                         CHECK_STACK (2);
10984                         sp -= 2;
10985
10986                         if (*ip == CEE_LDELEM) {
10987                                 CHECK_OPSIZE (5);
10988                                 token = read32 (ip + 1);
10989                                 klass = mini_get_class (method, token, generic_context);
10990                                 CHECK_TYPELOAD (klass);
10991                                 mono_class_init (klass);
10992                         }
10993                         else
10994                                 klass = array_access_to_klass (*ip);
10995
10996                         if (sp [0]->type != STACK_OBJ)
10997                                 UNVERIFIED;
10998
10999                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11000
11001                         if (mini_is_gsharedvt_variable_klass (klass)) {
11002                                 // FIXME-VT: OP_ICONST optimization
11003                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11004                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11005                                 ins->opcode = OP_LOADV_MEMBASE;
11006                         } else if (sp [1]->opcode == OP_ICONST) {
11007                                 int array_reg = sp [0]->dreg;
11008                                 int index_reg = sp [1]->dreg;
11009                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11010
11011                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11012                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11013
11014                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11015                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11016                         } else {
11017                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11018                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11019                         }
11020                         *sp++ = ins;
11021                         if (*ip == CEE_LDELEM)
11022                                 ip += 5;
11023                         else
11024                                 ++ip;
11025                         break;
11026                 }
11027                 case CEE_STELEM_I:
11028                 case CEE_STELEM_I1:
11029                 case CEE_STELEM_I2:
11030                 case CEE_STELEM_I4:
11031                 case CEE_STELEM_I8:
11032                 case CEE_STELEM_R4:
11033                 case CEE_STELEM_R8:
11034                 case CEE_STELEM_REF:
11035                 case CEE_STELEM: {
11036                         CHECK_STACK (3);
11037                         sp -= 3;
11038
11039                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11040
11041                         if (*ip == CEE_STELEM) {
11042                                 CHECK_OPSIZE (5);
11043                                 token = read32 (ip + 1);
11044                                 klass = mini_get_class (method, token, generic_context);
11045                                 CHECK_TYPELOAD (klass);
11046                                 mono_class_init (klass);
11047                         }
11048                         else
11049                                 klass = array_access_to_klass (*ip);
11050
11051                         if (sp [0]->type != STACK_OBJ)
11052                                 UNVERIFIED;
11053
11054                         emit_array_store (cfg, klass, sp, TRUE);
11055
11056                         if (*ip == CEE_STELEM)
11057                                 ip += 5;
11058                         else
11059                                 ++ip;
11060                         inline_costs += 1;
11061                         break;
11062                 }
11063                 case CEE_CKFINITE: {
11064                         CHECK_STACK (1);
11065                         --sp;
11066
11067                         if (cfg->llvm_only) {
11068                                 MonoInst *iargs [1];
11069
11070                                 iargs [0] = sp [0];
11071                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11072                         } else  {
11073                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11074                                 ins->sreg1 = sp [0]->dreg;
11075                                 ins->dreg = alloc_freg (cfg);
11076                                 ins->type = STACK_R8;
11077                                 MONO_ADD_INS (cfg->cbb, ins);
11078
11079                                 *sp++ = mono_decompose_opcode (cfg, ins);
11080                         }
11081
11082                         ++ip;
11083                         break;
11084                 }
11085                 case CEE_REFANYVAL: {
11086                         MonoInst *src_var, *src;
11087
11088                         int klass_reg = alloc_preg (cfg);
11089                         int dreg = alloc_preg (cfg);
11090
11091                         GSHAREDVT_FAILURE (*ip);
11092
11093                         CHECK_STACK (1);
11094                         MONO_INST_NEW (cfg, ins, *ip);
11095                         --sp;
11096                         CHECK_OPSIZE (5);
11097                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11098                         CHECK_TYPELOAD (klass);
11099
11100                         context_used = mini_class_check_context_used (cfg, klass);
11101
11102                         // FIXME:
11103                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11104                         if (!src_var)
11105                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11106                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11107                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11108
11109                         if (context_used) {
11110                                 MonoInst *klass_ins;
11111
11112                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11113                                                 klass, MONO_RGCTX_INFO_KLASS);
11114
11115                                 // FIXME:
11116                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11117                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11118                         } else {
11119                                 mini_emit_class_check (cfg, klass_reg, klass);
11120                         }
11121                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11122                         ins->type = STACK_MP;
11123                         ins->klass = klass;
11124                         *sp++ = ins;
11125                         ip += 5;
11126                         break;
11127                 }
11128                 case CEE_MKREFANY: {
11129                         MonoInst *loc, *addr;
11130
11131                         GSHAREDVT_FAILURE (*ip);
11132
11133                         CHECK_STACK (1);
11134                         MONO_INST_NEW (cfg, ins, *ip);
11135                         --sp;
11136                         CHECK_OPSIZE (5);
11137                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11138                         CHECK_TYPELOAD (klass);
11139
11140                         context_used = mini_class_check_context_used (cfg, klass);
11141
11142                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11143                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11144
11145                         if (context_used) {
11146                                 MonoInst *const_ins;
11147                                 int type_reg = alloc_preg (cfg);
11148
11149                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11150                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11151                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11152                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11153                         } else {
11154                                 int const_reg = alloc_preg (cfg);
11155                                 int type_reg = alloc_preg (cfg);
11156
11157                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11158                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11159                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11160                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11161                         }
11162                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11163
11164                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11165                         ins->type = STACK_VTYPE;
11166                         ins->klass = mono_defaults.typed_reference_class;
11167                         *sp++ = ins;
11168                         ip += 5;
11169                         break;
11170                 }
11171                 case CEE_LDTOKEN: {
11172                         gpointer handle;
11173                         MonoClass *handle_class;
11174
11175                         CHECK_STACK_OVF (1);
11176
11177                         CHECK_OPSIZE (5);
11178                         n = read32 (ip + 1);
11179
11180                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11181                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11182                                 handle = mono_method_get_wrapper_data (method, n);
11183                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11184                                 if (handle_class == mono_defaults.typehandle_class)
11185                                         handle = &((MonoClass*)handle)->byval_arg;
11186                         }
11187                         else {
11188                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11189                                 CHECK_CFG_ERROR;
11190                         }
11191                         if (!handle)
11192                                 LOAD_ERROR;
11193                         mono_class_init (handle_class);
11194                         if (cfg->gshared) {
11195                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11196                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11197                                         /* This case handles ldtoken
11198                                            of an open type, like for
11199                                            typeof(Gen<>). */
11200                                         context_used = 0;
11201                                 } else if (handle_class == mono_defaults.typehandle_class) {
11202                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11203                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11204                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11205                                 else if (handle_class == mono_defaults.methodhandle_class)
11206                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11207                                 else
11208                                         g_assert_not_reached ();
11209                         }
11210
11211                         if ((cfg->opt & MONO_OPT_SHARED) &&
11212                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11213                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11214                                 MonoInst *addr, *vtvar, *iargs [3];
11215                                 int method_context_used;
11216
11217                                 method_context_used = mini_method_check_context_used (cfg, method);
11218
11219                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11220
11221                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11222                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11223                                 if (method_context_used) {
11224                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11225                                                 method, MONO_RGCTX_INFO_METHOD);
11226                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11227                                 } else {
11228                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11229                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11230                                 }
11231                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11232
11233                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11234
11235                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11236                         } else {
11237                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11238                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11239                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11240                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11241                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11242                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11243
11244                                         mono_class_init (tclass);
11245                                         if (context_used) {
11246                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11247                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11248                                         } else if (cfg->compile_aot) {
11249                                                 if (method->wrapper_type) {
11250                                                         error_init (&error); //got to do it since there are multiple conditionals below
11251                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11252                                                                 /* Special case for static synchronized wrappers */
11253                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11254                                                         } else {
11255                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11256                                                                 /* FIXME: n is not a normal token */
11257                                                                 DISABLE_AOT (cfg);
11258                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11259                                                         }
11260                                                 } else {
11261                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11262                                                 }
11263                                         } else {
11264                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11265                                                 CHECK_CFG_ERROR;
11266                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11267                                         }
11268                                         ins->type = STACK_OBJ;
11269                                         ins->klass = cmethod->klass;
11270                                         ip += 5;
11271                                 } else {
11272                                         MonoInst *addr, *vtvar;
11273
11274                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11275
11276                                         if (context_used) {
11277                                                 if (handle_class == mono_defaults.typehandle_class) {
11278                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11279                                                                         mono_class_from_mono_type ((MonoType *)handle),
11280                                                                         MONO_RGCTX_INFO_TYPE);
11281                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11282                                                         ins = emit_get_rgctx_method (cfg, context_used,
11283                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11284                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11285                                                         ins = emit_get_rgctx_field (cfg, context_used,
11286                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11287                                                 } else {
11288                                                         g_assert_not_reached ();
11289                                                 }
11290                                         } else if (cfg->compile_aot) {
11291                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11292                                         } else {
11293                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11294                                         }
11295                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11296                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11297                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11298                                 }
11299                         }
11300
11301                         *sp++ = ins;
11302                         ip += 5;
11303                         break;
11304                 }
11305                 case CEE_THROW:
11306                         CHECK_STACK (1);
11307                         if (sp [-1]->type != STACK_OBJ)
11308                                 UNVERIFIED;
11309
11310                         MONO_INST_NEW (cfg, ins, OP_THROW);
11311                         --sp;
11312                         ins->sreg1 = sp [0]->dreg;
11313                         ip++;
11314                         cfg->cbb->out_of_line = TRUE;
11315                         MONO_ADD_INS (cfg->cbb, ins);
11316                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11317                         MONO_ADD_INS (cfg->cbb, ins);
11318                         sp = stack_start;
11319
11320                         link_bblock (cfg, cfg->cbb, end_bblock);
11321                         start_new_bblock = 1;
11322                         /* This can complicate code generation for llvm since the return value might not be defined */
11323                         if (COMPILE_LLVM (cfg))
11324                                 INLINE_FAILURE ("throw");
11325                         break;
11326                 case CEE_ENDFINALLY:
11327                         if (!ip_in_finally_clause (cfg, ip - header->code))
11328                                 UNVERIFIED;
11329                         /* mono_save_seq_point_info () depends on this */
11330                         if (sp != stack_start)
11331                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11332                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11333                         MONO_ADD_INS (cfg->cbb, ins);
11334                         ip++;
11335                         start_new_bblock = 1;
11336
11337                         /*
11338                          * Control will leave the method so empty the stack, otherwise
11339                          * the next basic block will start with a nonempty stack.
11340                          */
11341                         while (sp != stack_start) {
11342                                 sp--;
11343                         }
11344                         break;
11345                 case CEE_LEAVE:
11346                 case CEE_LEAVE_S: {
11347                         GList *handlers;
11348
11349                         if (*ip == CEE_LEAVE) {
11350                                 CHECK_OPSIZE (5);
11351                                 target = ip + 5 + (gint32)read32(ip + 1);
11352                         } else {
11353                                 CHECK_OPSIZE (2);
11354                                 target = ip + 2 + (signed char)(ip [1]);
11355                         }
11356
11357                         /* empty the stack */
11358                         while (sp != stack_start) {
11359                                 sp--;
11360                         }
11361
11362                         /*
11363                          * If this leave statement is in a catch block, check for a
11364                          * pending exception, and rethrow it if necessary.
11365                          * We avoid doing this in runtime invoke wrappers, since those are called
11366                          * by native code which excepts the wrapper to catch all exceptions.
11367                          */
11368                         for (i = 0; i < header->num_clauses; ++i) {
11369                                 MonoExceptionClause *clause = &header->clauses [i];
11370
11371                                 /*
11372                                  * Use <= in the final comparison to handle clauses with multiple
11373                                  * leave statements, like in bug #78024.
11374                                  * The ordering of the exception clauses guarantees that we find the
11375                                  * innermost clause.
11376                                  */
11377                                 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) {
11378                                         MonoInst *exc_ins;
11379                                         MonoBasicBlock *dont_throw;
11380
11381                                         /*
11382                                           MonoInst *load;
11383
11384                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11385                                         */
11386
11387                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11388
11389                                         NEW_BBLOCK (cfg, dont_throw);
11390
11391                                         /*
11392                                          * Currently, we always rethrow the abort exception, despite the
11393                                          * fact that this is not correct. See thread6.cs for an example.
11394                                          * But propagating the abort exception is more important than
11395                                          * getting the sematics right.
11396                                          */
11397                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11398                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11399                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11400
11401                                         MONO_START_BB (cfg, dont_throw);
11402                                 }
11403                         }
11404
11405 #ifdef ENABLE_LLVM
11406                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11407 #endif
11408
11409                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11410                                 GList *tmp;
11411                                 MonoExceptionClause *clause;
11412
11413                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11414                                         clause = (MonoExceptionClause *)tmp->data;
11415                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11416                                         g_assert (tblock);
11417                                         link_bblock (cfg, cfg->cbb, tblock);
11418                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11419                                         ins->inst_target_bb = tblock;
11420                                         ins->inst_eh_block = clause;
11421                                         MONO_ADD_INS (cfg->cbb, ins);
11422                                         cfg->cbb->has_call_handler = 1;
11423                                         if (COMPILE_LLVM (cfg)) {
11424                                                 MonoBasicBlock *target_bb;
11425
11426                                                 /*
11427                                                  * Link the finally bblock with the target, since it will
11428                                                  * conceptually branch there.
11429                                                  */
11430                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11431                                                 GET_BBLOCK (cfg, target_bb, target);
11432                                                 link_bblock (cfg, tblock, target_bb);
11433                                         }
11434                                 }
11435                                 g_list_free (handlers);
11436                         }
11437
11438                         MONO_INST_NEW (cfg, ins, OP_BR);
11439                         MONO_ADD_INS (cfg->cbb, ins);
11440                         GET_BBLOCK (cfg, tblock, target);
11441                         link_bblock (cfg, cfg->cbb, tblock);
11442                         ins->inst_target_bb = tblock;
11443
11444                         start_new_bblock = 1;
11445
11446                         if (*ip == CEE_LEAVE)
11447                                 ip += 5;
11448                         else
11449                                 ip += 2;
11450
11451                         break;
11452                 }
11453
11454                         /*
11455                          * Mono specific opcodes
11456                          */
11457                 case MONO_CUSTOM_PREFIX: {
11458
11459                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11460
11461                         CHECK_OPSIZE (2);
11462                         switch (ip [1]) {
11463                         case CEE_MONO_ICALL: {
11464                                 gpointer func;
11465                                 MonoJitICallInfo *info;
11466
11467                                 token = read32 (ip + 2);
11468                                 func = mono_method_get_wrapper_data (method, token);
11469                                 info = mono_find_jit_icall_by_addr (func);
11470                                 if (!info)
11471                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11472                                 g_assert (info);
11473
11474                                 CHECK_STACK (info->sig->param_count);
11475                                 sp -= info->sig->param_count;
11476
11477                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11478                                         MonoInst *addr;
11479
11480                                         /*
11481                                          * This is called on unattached threads, so it cannot go through the trampoline
11482                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11483                                          * instead.
11484                                          */
11485                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11486                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11487                                 } else {
11488                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11489                                 }
11490
11491                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11492                                         *sp++ = ins;
11493
11494                                 ip += 6;
11495                                 inline_costs += 10 * num_calls++;
11496
11497                                 break;
11498                         }
11499                         case CEE_MONO_LDPTR_CARD_TABLE:
11500                         case CEE_MONO_LDPTR_NURSERY_START:
11501                         case CEE_MONO_LDPTR_NURSERY_BITS:
11502                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11503                         case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT: {
11504                                 CHECK_STACK_OVF (1);
11505
11506                                 switch (ip [1]) {
11507                                 case CEE_MONO_LDPTR_CARD_TABLE:
11508                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11509                                         break;
11510                                 case CEE_MONO_LDPTR_NURSERY_START:
11511                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11512                                         break;
11513                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11514                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11515                                         break;
11516                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11517                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11518                                         break;
11519                                 case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT:
11520                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT, NULL);
11521                                         break;
11522                                 default:
11523                                         g_assert_not_reached ();
11524                                         break;
11525                                 }
11526
11527                                 *sp++ = ins;
11528                                 ip += 2;
11529                                 inline_costs += 10 * num_calls++;
11530                                 break;
11531                         }
11532                         case CEE_MONO_LDPTR: {
11533                                 gpointer ptr;
11534
11535                                 CHECK_STACK_OVF (1);
11536                                 CHECK_OPSIZE (6);
11537                                 token = read32 (ip + 2);
11538
11539                                 ptr = mono_method_get_wrapper_data (method, token);
11540                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11541                                 *sp++ = ins;
11542                                 ip += 6;
11543                                 inline_costs += 10 * num_calls++;
11544                                 /* Can't embed random pointers into AOT code */
11545                                 DISABLE_AOT (cfg);
11546                                 break;
11547                         }
11548                         case CEE_MONO_JIT_ICALL_ADDR: {
11549                                 MonoJitICallInfo *callinfo;
11550                                 gpointer ptr;
11551
11552                                 CHECK_STACK_OVF (1);
11553                                 CHECK_OPSIZE (6);
11554                                 token = read32 (ip + 2);
11555
11556                                 ptr = mono_method_get_wrapper_data (method, token);
11557                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11558                                 g_assert (callinfo);
11559                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11560                                 *sp++ = ins;
11561                                 ip += 6;
11562                                 inline_costs += 10 * num_calls++;
11563                                 break;
11564                         }
11565                         case CEE_MONO_ICALL_ADDR: {
11566                                 MonoMethod *cmethod;
11567                                 gpointer ptr;
11568
11569                                 CHECK_STACK_OVF (1);
11570                                 CHECK_OPSIZE (6);
11571                                 token = read32 (ip + 2);
11572
11573                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11574
11575                                 if (cfg->compile_aot) {
11576                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11577                                                 /*
11578                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11579                                                  * before the call, its not needed when using direct pinvoke.
11580                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11581                                                  * on platforms which don't support dlopen ().
11582                                                  */
11583                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11584                                         } else {
11585                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11586                                         }
11587                                 } else {
11588                                         ptr = mono_lookup_internal_call (cmethod);
11589                                         g_assert (ptr);
11590                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11591                                 }
11592                                 *sp++ = ins;
11593                                 ip += 6;
11594                                 break;
11595                         }
11596                         case CEE_MONO_VTADDR: {
11597                                 MonoInst *src_var, *src;
11598
11599                                 CHECK_STACK (1);
11600                                 --sp;
11601
11602                                 // FIXME:
11603                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11604                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11605                                 *sp++ = src;
11606                                 ip += 2;
11607                                 break;
11608                         }
11609                         case CEE_MONO_NEWOBJ: {
11610                                 MonoInst *iargs [2];
11611
11612                                 CHECK_STACK_OVF (1);
11613                                 CHECK_OPSIZE (6);
11614                                 token = read32 (ip + 2);
11615                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11616                                 mono_class_init (klass);
11617                                 NEW_DOMAINCONST (cfg, iargs [0]);
11618                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11619                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11620                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11621                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11622                                 ip += 6;
11623                                 inline_costs += 10 * num_calls++;
11624                                 break;
11625                         }
11626                         case CEE_MONO_OBJADDR:
11627                                 CHECK_STACK (1);
11628                                 --sp;
11629                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11630                                 ins->dreg = alloc_ireg_mp (cfg);
11631                                 ins->sreg1 = sp [0]->dreg;
11632                                 ins->type = STACK_MP;
11633                                 MONO_ADD_INS (cfg->cbb, ins);
11634                                 *sp++ = ins;
11635                                 ip += 2;
11636                                 break;
11637                         case CEE_MONO_LDNATIVEOBJ:
11638                                 /*
11639                                  * Similar to LDOBJ, but instead load the unmanaged
11640                                  * representation of the vtype to the stack.
11641                                  */
11642                                 CHECK_STACK (1);
11643                                 CHECK_OPSIZE (6);
11644                                 --sp;
11645                                 token = read32 (ip + 2);
11646                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11647                                 g_assert (klass->valuetype);
11648                                 mono_class_init (klass);
11649
11650                                 {
11651                                         MonoInst *src, *dest, *temp;
11652
11653                                         src = sp [0];
11654                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11655                                         temp->backend.is_pinvoke = 1;
11656                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11657                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11658
11659                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11660                                         dest->type = STACK_VTYPE;
11661                                         dest->klass = klass;
11662
11663                                         *sp ++ = dest;
11664                                         ip += 6;
11665                                 }
11666                                 break;
11667                         case CEE_MONO_RETOBJ: {
11668                                 /*
11669                                  * Same as RET, but return the native representation of a vtype
11670                                  * to the caller.
11671                                  */
11672                                 g_assert (cfg->ret);
11673                                 g_assert (mono_method_signature (method)->pinvoke);
11674                                 CHECK_STACK (1);
11675                                 --sp;
11676
11677                                 CHECK_OPSIZE (6);
11678                                 token = read32 (ip + 2);
11679                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11680
11681                                 if (!cfg->vret_addr) {
11682                                         g_assert (cfg->ret_var_is_local);
11683
11684                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11685                                 } else {
11686                                         EMIT_NEW_RETLOADA (cfg, ins);
11687                                 }
11688                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11689
11690                                 if (sp != stack_start)
11691                                         UNVERIFIED;
11692
11693                                 MONO_INST_NEW (cfg, ins, OP_BR);
11694                                 ins->inst_target_bb = end_bblock;
11695                                 MONO_ADD_INS (cfg->cbb, ins);
11696                                 link_bblock (cfg, cfg->cbb, end_bblock);
11697                                 start_new_bblock = 1;
11698                                 ip += 6;
11699                                 break;
11700                         }
11701                         case CEE_MONO_SAVE_LMF:
11702                         case CEE_MONO_RESTORE_LMF:
11703                                 ip += 2;
11704                                 break;
11705                         case CEE_MONO_CLASSCONST:
11706                                 CHECK_STACK_OVF (1);
11707                                 CHECK_OPSIZE (6);
11708                                 token = read32 (ip + 2);
11709                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11710                                 *sp++ = ins;
11711                                 ip += 6;
11712                                 inline_costs += 10 * num_calls++;
11713                                 break;
11714                         case CEE_MONO_NOT_TAKEN:
11715                                 cfg->cbb->out_of_line = TRUE;
11716                                 ip += 2;
11717                                 break;
11718                         case CEE_MONO_TLS: {
11719                                 MonoTlsKey key;
11720
11721                                 CHECK_STACK_OVF (1);
11722                                 CHECK_OPSIZE (6);
11723                                 key = (MonoTlsKey)read32 (ip + 2);
11724                                 g_assert (key < TLS_KEY_NUM);
11725
11726                                 ins = mono_create_tls_get (cfg, key);
11727                                 g_assert (ins);
11728                                 ins->type = STACK_PTR;
11729                                 *sp++ = ins;
11730                                 ip += 6;
11731                                 break;
11732                         }
11733                         case CEE_MONO_DYN_CALL: {
11734                                 MonoCallInst *call;
11735
11736                                 /* It would be easier to call a trampoline, but that would put an
11737                                  * extra frame on the stack, confusing exception handling. So
11738                                  * implement it inline using an opcode for now.
11739                                  */
11740
11741                                 if (!cfg->dyn_call_var) {
11742                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11743                                         /* prevent it from being register allocated */
11744                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11745                                 }
11746
11747                                 /* Has to use a call inst since it local regalloc expects it */
11748                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11749                                 ins = (MonoInst*)call;
11750                                 sp -= 2;
11751                                 ins->sreg1 = sp [0]->dreg;
11752                                 ins->sreg2 = sp [1]->dreg;
11753                                 MONO_ADD_INS (cfg->cbb, ins);
11754
11755                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11756
11757                                 ip += 2;
11758                                 inline_costs += 10 * num_calls++;
11759
11760                                 break;
11761                         }
11762                         case CEE_MONO_MEMORY_BARRIER: {
11763                                 CHECK_OPSIZE (6);
11764                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11765                                 ip += 6;
11766                                 break;
11767                         }
11768                         case CEE_MONO_ATOMIC_STORE_I4: {
11769                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11770
11771                                 CHECK_OPSIZE (6);
11772                                 CHECK_STACK (2);
11773                                 sp -= 2;
11774
11775                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11776                                 ins->dreg = sp [0]->dreg;
11777                                 ins->sreg1 = sp [1]->dreg;
11778                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11779                                 MONO_ADD_INS (cfg->cbb, ins);
11780
11781                                 ip += 6;
11782                                 break;
11783                         }
11784                         case CEE_MONO_JIT_ATTACH: {
11785                                 MonoInst *args [16], *domain_ins;
11786                                 MonoInst *ad_ins, *jit_tls_ins;
11787                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11788
11789                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11790
11791                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11792
11793                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11794                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11795
11796                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11797                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11798
11799                                 if (ad_ins && jit_tls_ins) {
11800                                         NEW_BBLOCK (cfg, next_bb);
11801                                         NEW_BBLOCK (cfg, call_bb);
11802
11803                                         if (cfg->compile_aot) {
11804                                                 /* AOT code is only used in the root domain */
11805                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11806                                         } else {
11807                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11808                                         }
11809                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11810                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11811
11812                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11813                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11814
11815                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11816                                         MONO_START_BB (cfg, call_bb);
11817                                 }
11818
11819                                 /* AOT code is only used in the root domain */
11820                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11821                                 if (cfg->compile_aot) {
11822                                         MonoInst *addr;
11823
11824                                         /*
11825                                          * This is called on unattached threads, so it cannot go through the trampoline
11826                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11827                                          * instead.
11828                                          */
11829                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11830                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11831                                 } else {
11832                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11833                                 }
11834                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11835
11836                                 if (next_bb)
11837                                         MONO_START_BB (cfg, next_bb);
11838
11839                                 ip += 2;
11840                                 break;
11841                         }
11842                         case CEE_MONO_JIT_DETACH: {
11843                                 MonoInst *args [16];
11844
11845                                 /* Restore the original domain */
11846                                 dreg = alloc_ireg (cfg);
11847                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11848                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11849                                 ip += 2;
11850                                 break;
11851                         }
11852                         case CEE_MONO_CALLI_EXTRA_ARG: {
11853                                 MonoInst *addr;
11854                                 MonoMethodSignature *fsig;
11855                                 MonoInst *arg;
11856
11857                                 /*
11858                                  * This is the same as CEE_CALLI, but passes an additional argument
11859                                  * to the called method in llvmonly mode.
11860                                  * This is only used by delegate invoke wrappers to call the
11861                                  * actual delegate method.
11862                                  */
11863                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11864
11865                                 CHECK_OPSIZE (6);
11866                                 token = read32 (ip + 2);
11867
11868                                 ins = NULL;
11869
11870                                 cmethod = NULL;
11871                                 CHECK_STACK (1);
11872                                 --sp;
11873                                 addr = *sp;
11874                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11875                                 CHECK_CFG_ERROR;
11876
11877                                 if (cfg->llvm_only)
11878                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11879
11880                                 n = fsig->param_count + fsig->hasthis + 1;
11881
11882                                 CHECK_STACK (n);
11883
11884                                 sp -= n;
11885                                 arg = sp [n - 1];
11886
11887                                 if (cfg->llvm_only) {
11888                                         /*
11889                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11890                                          * cconv. This is set by mono_init_delegate ().
11891                                          */
11892                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11893                                                 MonoInst *callee = addr;
11894                                                 MonoInst *call, *localloc_ins;
11895                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11896                                                 int low_bit_reg = alloc_preg (cfg);
11897
11898                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11899                                                 NEW_BBLOCK (cfg, end_bb);
11900
11901                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11902                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11903                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11904
11905                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11906                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11907                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11908                                                 /*
11909                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11910                                                  */
11911                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11912                                                 ins->dreg = alloc_preg (cfg);
11913                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11914                                                 MONO_ADD_INS (cfg->cbb, ins);
11915                                                 localloc_ins = ins;
11916                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11917                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11918                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11919
11920                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11921                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11922
11923                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11924                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11925                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11926                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11927                                                 ins->dreg = call->dreg;
11928
11929                                                 MONO_START_BB (cfg, end_bb);
11930                                         } else {
11931                                                 /* Caller uses a normal calling conv */
11932
11933                                                 MonoInst *callee = addr;
11934                                                 MonoInst *call, *localloc_ins;
11935                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11936                                                 int low_bit_reg = alloc_preg (cfg);
11937
11938                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11939                                                 NEW_BBLOCK (cfg, end_bb);
11940
11941                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11942                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11943                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11944
11945                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
11946                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11947                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11948                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
11949                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11950                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11951                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
11952                                                 MONO_ADD_INS (cfg->cbb, addr);
11953                                                 /*
11954                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
11955                                                  */
11956                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11957                                                 ins->dreg = alloc_preg (cfg);
11958                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11959                                                 MONO_ADD_INS (cfg->cbb, ins);
11960                                                 localloc_ins = ins;
11961                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11962                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11963                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11964
11965                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11966                                                 ins->dreg = call->dreg;
11967                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11968
11969                                                 MONO_START_BB (cfg, end_bb);
11970                                         }
11971                                 } else {
11972                                         /* Same as CEE_CALLI */
11973                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
11974                                                 /*
11975                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
11976                                                  */
11977                                                 MonoInst *callee = addr;
11978
11979                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11980                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11981                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
11982                                         } else {
11983                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
11984                                         }
11985                                 }
11986
11987                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
11988                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
11989
11990                                 CHECK_CFG_EXCEPTION;
11991
11992                                 ip += 6;
11993                                 ins_flag = 0;
11994                                 constrained_class = NULL;
11995                                 break;
11996                         }
11997                         case CEE_MONO_LDDOMAIN:
11998                                 CHECK_STACK_OVF (1);
11999                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12000                                 ip += 2;
12001                                 *sp++ = ins;
12002                                 break;
12003                         case CEE_MONO_GET_LAST_ERROR:
12004                                 CHECK_OPSIZE (2);
12005                                 CHECK_STACK_OVF (1);
12006
12007                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12008                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12009                                 ins->type = STACK_I4;
12010                                 MONO_ADD_INS (cfg->cbb, ins);
12011
12012                                 ip += 2;
12013                                 *sp++ = ins;
12014                                 break;
12015                         case CEE_MONO_GET_RGCTX_ARG:
12016                                 CHECK_OPSIZE (2);
12017                                 CHECK_STACK_OVF (1);
12018
12019                                 mono_create_rgctx_var (cfg);
12020
12021                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12022                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12023                                 ins->sreg1 = cfg->rgctx_var->dreg;
12024                                 ins->type = STACK_PTR;
12025                                 MONO_ADD_INS (cfg->cbb, ins);
12026
12027                                 ip += 2;
12028                                 *sp++ = ins;
12029                                 break;
12030                         default:
12031                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12032                                 break;
12033                         }
12034                         break;
12035                 }
12036
12037                 case CEE_PREFIX1: {
12038                         CHECK_OPSIZE (2);
12039                         switch (ip [1]) {
12040                         case CEE_ARGLIST: {
12041                                 /* somewhat similar to LDTOKEN */
12042                                 MonoInst *addr, *vtvar;
12043                                 CHECK_STACK_OVF (1);
12044                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12045
12046                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12047                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12048
12049                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12050                                 ins->type = STACK_VTYPE;
12051                                 ins->klass = mono_defaults.argumenthandle_class;
12052                                 *sp++ = ins;
12053                                 ip += 2;
12054                                 break;
12055                         }
12056                         case CEE_CEQ:
12057                         case CEE_CGT:
12058                         case CEE_CGT_UN:
12059                         case CEE_CLT:
12060                         case CEE_CLT_UN: {
12061                                 MonoInst *cmp, *arg1, *arg2;
12062
12063                                 CHECK_STACK (2);
12064                                 sp -= 2;
12065                                 arg1 = sp [0];
12066                                 arg2 = sp [1];
12067
12068                                 /*
12069                                  * The following transforms:
12070                                  *    CEE_CEQ    into OP_CEQ
12071                                  *    CEE_CGT    into OP_CGT
12072                                  *    CEE_CGT_UN into OP_CGT_UN
12073                                  *    CEE_CLT    into OP_CLT
12074                                  *    CEE_CLT_UN into OP_CLT_UN
12075                                  */
12076                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12077
12078                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12079                                 cmp->sreg1 = arg1->dreg;
12080                                 cmp->sreg2 = arg2->dreg;
12081                                 type_from_op (cfg, cmp, arg1, arg2);
12082                                 CHECK_TYPE (cmp);
12083                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12084                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12085                                         cmp->opcode = OP_LCOMPARE;
12086                                 else if (arg1->type == STACK_R4)
12087                                         cmp->opcode = OP_RCOMPARE;
12088                                 else if (arg1->type == STACK_R8)
12089                                         cmp->opcode = OP_FCOMPARE;
12090                                 else
12091                                         cmp->opcode = OP_ICOMPARE;
12092                                 MONO_ADD_INS (cfg->cbb, cmp);
12093                                 ins->type = STACK_I4;
12094                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12095                                 type_from_op (cfg, ins, arg1, arg2);
12096
12097                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12098                                         /*
12099                                          * The backends expect the fceq opcodes to do the
12100                                          * comparison too.
12101                                          */
12102                                         ins->sreg1 = cmp->sreg1;
12103                                         ins->sreg2 = cmp->sreg2;
12104                                         NULLIFY_INS (cmp);
12105                                 }
12106                                 MONO_ADD_INS (cfg->cbb, ins);
12107                                 *sp++ = ins;
12108                                 ip += 2;
12109                                 break;
12110                         }
12111                         case CEE_LDFTN: {
12112                                 MonoInst *argconst;
12113                                 MonoMethod *cil_method;
12114
12115                                 CHECK_STACK_OVF (1);
12116                                 CHECK_OPSIZE (6);
12117                                 n = read32 (ip + 2);
12118                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12119                                 CHECK_CFG_ERROR;
12120
12121                                 mono_class_init (cmethod->klass);
12122
12123                                 mono_save_token_info (cfg, image, n, cmethod);
12124
12125                                 context_used = mini_method_check_context_used (cfg, cmethod);
12126
12127                                 cil_method = cmethod;
12128                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12129                                         emit_method_access_failure (cfg, method, cil_method);
12130
12131                                 if (mono_security_core_clr_enabled ())
12132                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12133
12134                                 /*
12135                                  * Optimize the common case of ldftn+delegate creation
12136                                  */
12137                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12138                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12139                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12140                                                 MonoInst *target_ins, *handle_ins;
12141                                                 MonoMethod *invoke;
12142                                                 int invoke_context_used;
12143
12144                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12145                                                 if (!invoke || !mono_method_signature (invoke))
12146                                                         LOAD_ERROR;
12147
12148                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12149
12150                                                 target_ins = sp [-1];
12151
12152                                                 if (mono_security_core_clr_enabled ())
12153                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12154
12155                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12156                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12157                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12158                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12159                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12160                                                         }
12161                                                 }
12162
12163                                                 /* FIXME: SGEN support */
12164                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12165                                                         ip += 6;
12166                                                         if (cfg->verbose_level > 3)
12167                                                                 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));
12168                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12169                                                                 sp --;
12170                                                                 *sp = handle_ins;
12171                                                                 CHECK_CFG_EXCEPTION;
12172                                                                 ip += 5;
12173                                                                 sp ++;
12174                                                                 break;
12175                                                         }
12176                                                         ip -= 6;
12177                                                 }
12178                                         }
12179                                 }
12180
12181                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12182                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12183                                 *sp++ = ins;
12184
12185                                 ip += 6;
12186                                 inline_costs += 10 * num_calls++;
12187                                 break;
12188                         }
12189                         case CEE_LDVIRTFTN: {
12190                                 MonoInst *args [2];
12191
12192                                 CHECK_STACK (1);
12193                                 CHECK_OPSIZE (6);
12194                                 n = read32 (ip + 2);
12195                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12196                                 CHECK_CFG_ERROR;
12197
12198                                 mono_class_init (cmethod->klass);
12199
12200                                 context_used = mini_method_check_context_used (cfg, cmethod);
12201
12202                                 if (mono_security_core_clr_enabled ())
12203                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12204
12205                                 /*
12206                                  * Optimize the common case of ldvirtftn+delegate creation
12207                                  */
12208                                 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)) {
12209                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12210                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12211                                                 MonoInst *target_ins, *handle_ins;
12212                                                 MonoMethod *invoke;
12213                                                 int invoke_context_used;
12214                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12215
12216                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12217                                                 if (!invoke || !mono_method_signature (invoke))
12218                                                         LOAD_ERROR;
12219
12220                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12221
12222                                                 target_ins = sp [-1];
12223
12224                                                 if (mono_security_core_clr_enabled ())
12225                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12226
12227                                                 /* FIXME: SGEN support */
12228                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12229                                                         ip += 6;
12230                                                         if (cfg->verbose_level > 3)
12231                                                                 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));
12232                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12233                                                                 sp -= 2;
12234                                                                 *sp = handle_ins;
12235                                                                 CHECK_CFG_EXCEPTION;
12236                                                                 ip += 5;
12237                                                                 sp ++;
12238                                                                 break;
12239                                                         }
12240                                                         ip -= 6;
12241                                                 }
12242                                         }
12243                                 }
12244
12245                                 --sp;
12246                                 args [0] = *sp;
12247
12248                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12249                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12250
12251                                 if (context_used)
12252                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12253                                 else
12254                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12255
12256                                 ip += 6;
12257                                 inline_costs += 10 * num_calls++;
12258                                 break;
12259                         }
12260                         case CEE_LDARG:
12261                                 CHECK_STACK_OVF (1);
12262                                 CHECK_OPSIZE (4);
12263                                 n = read16 (ip + 2);
12264                                 CHECK_ARG (n);
12265                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12266                                 *sp++ = ins;
12267                                 ip += 4;
12268                                 break;
12269                         case CEE_LDARGA:
12270                                 CHECK_STACK_OVF (1);
12271                                 CHECK_OPSIZE (4);
12272                                 n = read16 (ip + 2);
12273                                 CHECK_ARG (n);
12274                                 NEW_ARGLOADA (cfg, ins, n);
12275                                 MONO_ADD_INS (cfg->cbb, ins);
12276                                 *sp++ = ins;
12277                                 ip += 4;
12278                                 break;
12279                         case CEE_STARG:
12280                                 CHECK_STACK (1);
12281                                 --sp;
12282                                 CHECK_OPSIZE (4);
12283                                 n = read16 (ip + 2);
12284                                 CHECK_ARG (n);
12285                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12286                                         UNVERIFIED;
12287                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12288                                 ip += 4;
12289                                 break;
12290                         case CEE_LDLOC:
12291                                 CHECK_STACK_OVF (1);
12292                                 CHECK_OPSIZE (4);
12293                                 n = read16 (ip + 2);
12294                                 CHECK_LOCAL (n);
12295                                 if ((ip [4] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 4) && header->locals [n]->type == MONO_TYPE_VALUETYPE) {
12296                                         /* Avoid loading a struct just to load one of its fields */
12297                                         EMIT_NEW_LOCLOADA (cfg, ins, n);
12298                                 } else {
12299                                         EMIT_NEW_LOCLOAD (cfg, ins, n);
12300                                 }
12301                                 *sp++ = ins;
12302                                 ip += 4;
12303                                 break;
12304                         case CEE_LDLOCA: {
12305                                 unsigned char *tmp_ip;
12306                                 CHECK_STACK_OVF (1);
12307                                 CHECK_OPSIZE (4);
12308                                 n = read16 (ip + 2);
12309                                 CHECK_LOCAL (n);
12310
12311                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12312                                         ip = tmp_ip;
12313                                         inline_costs += 1;
12314                                         break;
12315                                 }
12316
12317                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12318                                 *sp++ = ins;
12319                                 ip += 4;
12320                                 break;
12321                         }
12322                         case CEE_STLOC:
12323                                 CHECK_STACK (1);
12324                                 --sp;
12325                                 CHECK_OPSIZE (4);
12326                                 n = read16 (ip + 2);
12327                                 CHECK_LOCAL (n);
12328                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12329                                         UNVERIFIED;
12330                                 emit_stloc_ir (cfg, sp, header, n);
12331                                 ip += 4;
12332                                 inline_costs += 1;
12333                                 break;
12334                         case CEE_LOCALLOC: {
12335                                 CHECK_STACK (1);
12336                                 MonoBasicBlock *non_zero_bb, *end_bb;
12337                                 int alloc_ptr = alloc_preg (cfg);
12338                                 --sp;
12339                                 if (sp != stack_start)
12340                                         UNVERIFIED;
12341                                 if (cfg->method != method)
12342                                         /*
12343                                          * Inlining this into a loop in a parent could lead to
12344                                          * stack overflows which is different behavior than the
12345                                          * non-inlined case, thus disable inlining in this case.
12346                                          */
12347                                         INLINE_FAILURE("localloc");
12348
12349                                 NEW_BBLOCK (cfg, non_zero_bb);
12350                                 NEW_BBLOCK (cfg, end_bb);
12351
12352                                 /* if size != zero */
12353                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12354                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12355
12356                                 //size is zero, so result is NULL
12357                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12358                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12359
12360                                 MONO_START_BB (cfg, non_zero_bb);
12361                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12362                                 ins->dreg = alloc_ptr;
12363                                 ins->sreg1 = sp [0]->dreg;
12364                                 ins->type = STACK_PTR;
12365                                 MONO_ADD_INS (cfg->cbb, ins);
12366
12367                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12368                                 if (init_locals)
12369                                         ins->flags |= MONO_INST_INIT;
12370
12371                                 MONO_START_BB (cfg, end_bb);
12372                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12373                                 ins->type = STACK_PTR;
12374
12375                                 *sp++ = ins;
12376                                 ip += 2;
12377                                 break;
12378                         }
12379                         case CEE_ENDFILTER: {
12380                                 MonoExceptionClause *clause, *nearest;
12381                                 int cc;
12382
12383                                 CHECK_STACK (1);
12384                                 --sp;
12385                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12386                                         UNVERIFIED;
12387                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12388                                 ins->sreg1 = (*sp)->dreg;
12389                                 MONO_ADD_INS (cfg->cbb, ins);
12390                                 start_new_bblock = 1;
12391                                 ip += 2;
12392
12393                                 nearest = NULL;
12394                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12395                                         clause = &header->clauses [cc];
12396                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12397                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12398                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12399                                                 nearest = clause;
12400                                 }
12401                                 g_assert (nearest);
12402                                 if ((ip - header->code) != nearest->handler_offset)
12403                                         UNVERIFIED;
12404
12405                                 break;
12406                         }
12407                         case CEE_UNALIGNED_:
12408                                 ins_flag |= MONO_INST_UNALIGNED;
12409                                 /* FIXME: record alignment? we can assume 1 for now */
12410                                 CHECK_OPSIZE (3);
12411                                 ip += 3;
12412                                 break;
12413                         case CEE_VOLATILE_:
12414                                 ins_flag |= MONO_INST_VOLATILE;
12415                                 ip += 2;
12416                                 break;
12417                         case CEE_TAIL_:
12418                                 ins_flag   |= MONO_INST_TAILCALL;
12419                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12420                                 /* Can't inline tail calls at this time */
12421                                 inline_costs += 100000;
12422                                 ip += 2;
12423                                 break;
12424                         case CEE_INITOBJ:
12425                                 CHECK_STACK (1);
12426                                 --sp;
12427                                 CHECK_OPSIZE (6);
12428                                 token = read32 (ip + 2);
12429                                 klass = mini_get_class (method, token, generic_context);
12430                                 CHECK_TYPELOAD (klass);
12431                                 if (generic_class_is_reference_type (cfg, klass))
12432                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12433                                 else
12434                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12435                                 ip += 6;
12436                                 inline_costs += 1;
12437                                 break;
12438                         case CEE_CONSTRAINED_:
12439                                 CHECK_OPSIZE (6);
12440                                 token = read32 (ip + 2);
12441                                 constrained_class = mini_get_class (method, token, generic_context);
12442                                 CHECK_TYPELOAD (constrained_class);
12443                                 ip += 6;
12444                                 break;
12445                         case CEE_CPBLK:
12446                                 CHECK_STACK (3);
12447                                 sp -= 3;
12448                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12449                                 ip += 2;
12450                                 ins_flag = 0;
12451                                 inline_costs += 1;
12452                                 break;
12453                         case CEE_INITBLK:
12454                                 CHECK_STACK (3);
12455                                 sp -= 3;
12456                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12457                                 ip += 2;
12458                                 ins_flag = 0;
12459                                 inline_costs += 1;
12460                                 break;
12461                         case CEE_NO_:
12462                                 CHECK_OPSIZE (3);
12463                                 if (ip [2] & 0x1)
12464                                         ins_flag |= MONO_INST_NOTYPECHECK;
12465                                 if (ip [2] & 0x2)
12466                                         ins_flag |= MONO_INST_NORANGECHECK;
12467                                 /* we ignore the no-nullcheck for now since we
12468                                  * really do it explicitly only when doing callvirt->call
12469                                  */
12470                                 ip += 3;
12471                                 break;
12472                         case CEE_RETHROW: {
12473                                 MonoInst *load;
12474                                 int handler_offset = -1;
12475
12476                                 for (i = 0; i < header->num_clauses; ++i) {
12477                                         MonoExceptionClause *clause = &header->clauses [i];
12478                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12479                                                 handler_offset = clause->handler_offset;
12480                                                 break;
12481                                         }
12482                                 }
12483
12484                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12485
12486                                 if (handler_offset == -1)
12487                                         UNVERIFIED;
12488
12489                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12490                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12491                                 ins->sreg1 = load->dreg;
12492                                 MONO_ADD_INS (cfg->cbb, ins);
12493
12494                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12495                                 MONO_ADD_INS (cfg->cbb, ins);
12496
12497                                 sp = stack_start;
12498                                 link_bblock (cfg, cfg->cbb, end_bblock);
12499                                 start_new_bblock = 1;
12500                                 ip += 2;
12501                                 break;
12502                         }
12503                         case CEE_SIZEOF: {
12504                                 guint32 val;
12505                                 int ialign;
12506
12507                                 CHECK_STACK_OVF (1);
12508                                 CHECK_OPSIZE (6);
12509                                 token = read32 (ip + 2);
12510                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12511                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12512                                         CHECK_CFG_ERROR;
12513
12514                                         val = mono_type_size (type, &ialign);
12515                                 } else {
12516                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12517                                         CHECK_TYPELOAD (klass);
12518
12519                                         val = mono_type_size (&klass->byval_arg, &ialign);
12520
12521                                         if (mini_is_gsharedvt_klass (klass))
12522                                                 GSHAREDVT_FAILURE (*ip);
12523                                 }
12524                                 EMIT_NEW_ICONST (cfg, ins, val);
12525                                 *sp++= ins;
12526                                 ip += 6;
12527                                 break;
12528                         }
12529                         case CEE_REFANYTYPE: {
12530                                 MonoInst *src_var, *src;
12531
12532                                 GSHAREDVT_FAILURE (*ip);
12533
12534                                 CHECK_STACK (1);
12535                                 --sp;
12536
12537                                 // FIXME:
12538                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12539                                 if (!src_var)
12540                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12541                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12542                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12543                                 *sp++ = ins;
12544                                 ip += 2;
12545                                 break;
12546                         }
12547                         case CEE_READONLY_:
12548                                 readonly = TRUE;
12549                                 ip += 2;
12550                                 break;
12551
12552                         case CEE_UNUSED56:
12553                         case CEE_UNUSED57:
12554                         case CEE_UNUSED70:
12555                         case CEE_UNUSED:
12556                         case CEE_UNUSED99:
12557                                 UNVERIFIED;
12558
12559                         default:
12560                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12561                                 UNVERIFIED;
12562                         }
12563                         break;
12564                 }
12565                 case CEE_UNUSED58:
12566                 case CEE_UNUSED1:
12567                         UNVERIFIED;
12568
12569                 default:
12570                         g_warning ("opcode 0x%02x not handled", *ip);
12571                         UNVERIFIED;
12572                 }
12573         }
12574         if (start_new_bblock != 1)
12575                 UNVERIFIED;
12576
12577         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12578         if (cfg->cbb->next_bb) {
12579                 /* This could already be set because of inlining, #693905 */
12580                 MonoBasicBlock *bb = cfg->cbb;
12581
12582                 while (bb->next_bb)
12583                         bb = bb->next_bb;
12584                 bb->next_bb = end_bblock;
12585         } else {
12586                 cfg->cbb->next_bb = end_bblock;
12587         }
12588
12589         if (cfg->method == method && cfg->domainvar) {
12590                 MonoInst *store;
12591                 MonoInst *get_domain;
12592
12593                 cfg->cbb = init_localsbb;
12594
12595                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12596                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12597                 MONO_ADD_INS (cfg->cbb, store);
12598         }
12599
12600 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12601         if (cfg->compile_aot)
12602                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12603                 mono_get_got_var (cfg);
12604 #endif
12605
12606         if (cfg->method == method && cfg->got_var)
12607                 mono_emit_load_got_addr (cfg);
12608
12609         if (init_localsbb) {
12610                 cfg->cbb = init_localsbb;
12611                 cfg->ip = NULL;
12612                 for (i = 0; i < header->num_locals; ++i) {
12613                         emit_init_local (cfg, i, header->locals [i], init_locals);
12614                 }
12615         }
12616
12617         if (cfg->init_ref_vars && cfg->method == method) {
12618                 /* Emit initialization for ref vars */
12619                 // FIXME: Avoid duplication initialization for IL locals.
12620                 for (i = 0; i < cfg->num_varinfo; ++i) {
12621                         MonoInst *ins = cfg->varinfo [i];
12622
12623                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12624                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12625                 }
12626         }
12627
12628         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12629                 cfg->cbb = init_localsbb;
12630                 emit_push_lmf (cfg);
12631         }
12632
12633         cfg->cbb = init_localsbb;
12634         emit_instrumentation_call (cfg, mono_profiler_raise_method_enter, TRUE);
12635
12636         if (seq_points) {
12637                 MonoBasicBlock *bb;
12638
12639                 /*
12640                  * Make seq points at backward branch targets interruptable.
12641                  */
12642                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12643                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12644                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12645         }
12646
12647         /* Add a sequence point for method entry/exit events */
12648         if (seq_points && cfg->gen_sdb_seq_points) {
12649                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12650                 MONO_ADD_INS (init_localsbb, ins);
12651                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12652                 MONO_ADD_INS (cfg->bb_exit, ins);
12653         }
12654
12655         /*
12656          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12657          * the code they refer to was dead (#11880).
12658          */
12659         if (sym_seq_points) {
12660                 for (i = 0; i < header->code_size; ++i) {
12661                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12662                                 MonoInst *ins;
12663
12664                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12665                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12666                         }
12667                 }
12668         }
12669
12670         cfg->ip = NULL;
12671
12672         if (cfg->method == method) {
12673                 MonoBasicBlock *bb;
12674                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12675                         if (bb == cfg->bb_init)
12676                                 bb->region = -1;
12677                         else
12678                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12679                         if (cfg->spvars)
12680                                 mono_create_spvar_for_region (cfg, bb->region);
12681                         if (cfg->verbose_level > 2)
12682                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12683                 }
12684         } else {
12685                 MonoBasicBlock *bb;
12686                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12687                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12688                         bb->real_offset = inline_offset;
12689                 }
12690         }
12691
12692         if (inline_costs < 0) {
12693                 char *mname;
12694
12695                 /* Method is too large */
12696                 mname = mono_method_full_name (method, TRUE);
12697                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12698                 g_free (mname);
12699         }
12700
12701         if ((cfg->verbose_level > 2) && (cfg->method == method))
12702                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12703
12704         goto cleanup;
12705
12706 mono_error_exit:
12707         g_assert (!mono_error_ok (&cfg->error));
12708         goto cleanup;
12709
12710  exception_exit:
12711         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12712         goto cleanup;
12713
12714  unverified:
12715         set_exception_type_from_invalid_il (cfg, method, ip);
12716         goto cleanup;
12717
12718  cleanup:
12719         g_slist_free (class_inits);
12720         mono_basic_block_free (original_bb);
12721         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12722         if (cfg->exception_type)
12723                 return -1;
12724         else
12725                 return inline_costs;
12726 }
12727
12728 static int
12729 store_membase_reg_to_store_membase_imm (int opcode)
12730 {
12731         switch (opcode) {
12732         case OP_STORE_MEMBASE_REG:
12733                 return OP_STORE_MEMBASE_IMM;
12734         case OP_STOREI1_MEMBASE_REG:
12735                 return OP_STOREI1_MEMBASE_IMM;
12736         case OP_STOREI2_MEMBASE_REG:
12737                 return OP_STOREI2_MEMBASE_IMM;
12738         case OP_STOREI4_MEMBASE_REG:
12739                 return OP_STOREI4_MEMBASE_IMM;
12740         case OP_STOREI8_MEMBASE_REG:
12741                 return OP_STOREI8_MEMBASE_IMM;
12742         default:
12743                 g_assert_not_reached ();
12744         }
12745
12746         return -1;
12747 }
12748
12749 int
12750 mono_op_to_op_imm (int opcode)
12751 {
12752         switch (opcode) {
12753         case OP_IADD:
12754                 return OP_IADD_IMM;
12755         case OP_ISUB:
12756                 return OP_ISUB_IMM;
12757         case OP_IDIV:
12758                 return OP_IDIV_IMM;
12759         case OP_IDIV_UN:
12760                 return OP_IDIV_UN_IMM;
12761         case OP_IREM:
12762                 return OP_IREM_IMM;
12763         case OP_IREM_UN:
12764                 return OP_IREM_UN_IMM;
12765         case OP_IMUL:
12766                 return OP_IMUL_IMM;
12767         case OP_IAND:
12768                 return OP_IAND_IMM;
12769         case OP_IOR:
12770                 return OP_IOR_IMM;
12771         case OP_IXOR:
12772                 return OP_IXOR_IMM;
12773         case OP_ISHL:
12774                 return OP_ISHL_IMM;
12775         case OP_ISHR:
12776                 return OP_ISHR_IMM;
12777         case OP_ISHR_UN:
12778                 return OP_ISHR_UN_IMM;
12779
12780         case OP_LADD:
12781                 return OP_LADD_IMM;
12782         case OP_LSUB:
12783                 return OP_LSUB_IMM;
12784         case OP_LAND:
12785                 return OP_LAND_IMM;
12786         case OP_LOR:
12787                 return OP_LOR_IMM;
12788         case OP_LXOR:
12789                 return OP_LXOR_IMM;
12790         case OP_LSHL:
12791                 return OP_LSHL_IMM;
12792         case OP_LSHR:
12793                 return OP_LSHR_IMM;
12794         case OP_LSHR_UN:
12795                 return OP_LSHR_UN_IMM;
12796 #if SIZEOF_REGISTER == 8
12797         case OP_LREM:
12798                 return OP_LREM_IMM;
12799 #endif
12800
12801         case OP_COMPARE:
12802                 return OP_COMPARE_IMM;
12803         case OP_ICOMPARE:
12804                 return OP_ICOMPARE_IMM;
12805         case OP_LCOMPARE:
12806                 return OP_LCOMPARE_IMM;
12807
12808         case OP_STORE_MEMBASE_REG:
12809                 return OP_STORE_MEMBASE_IMM;
12810         case OP_STOREI1_MEMBASE_REG:
12811                 return OP_STOREI1_MEMBASE_IMM;
12812         case OP_STOREI2_MEMBASE_REG:
12813                 return OP_STOREI2_MEMBASE_IMM;
12814         case OP_STOREI4_MEMBASE_REG:
12815                 return OP_STOREI4_MEMBASE_IMM;
12816
12817 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12818         case OP_X86_PUSH:
12819                 return OP_X86_PUSH_IMM;
12820         case OP_X86_COMPARE_MEMBASE_REG:
12821                 return OP_X86_COMPARE_MEMBASE_IMM;
12822 #endif
12823 #if defined(TARGET_AMD64)
12824         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12825                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12826 #endif
12827         case OP_VOIDCALL_REG:
12828                 return OP_VOIDCALL;
12829         case OP_CALL_REG:
12830                 return OP_CALL;
12831         case OP_LCALL_REG:
12832                 return OP_LCALL;
12833         case OP_FCALL_REG:
12834                 return OP_FCALL;
12835         case OP_LOCALLOC:
12836                 return OP_LOCALLOC_IMM;
12837         }
12838
12839         return -1;
12840 }
12841
12842 static int
12843 ldind_to_load_membase (int opcode)
12844 {
12845         switch (opcode) {
12846         case CEE_LDIND_I1:
12847                 return OP_LOADI1_MEMBASE;
12848         case CEE_LDIND_U1:
12849                 return OP_LOADU1_MEMBASE;
12850         case CEE_LDIND_I2:
12851                 return OP_LOADI2_MEMBASE;
12852         case CEE_LDIND_U2:
12853                 return OP_LOADU2_MEMBASE;
12854         case CEE_LDIND_I4:
12855                 return OP_LOADI4_MEMBASE;
12856         case CEE_LDIND_U4:
12857                 return OP_LOADU4_MEMBASE;
12858         case CEE_LDIND_I:
12859                 return OP_LOAD_MEMBASE;
12860         case CEE_LDIND_REF:
12861                 return OP_LOAD_MEMBASE;
12862         case CEE_LDIND_I8:
12863                 return OP_LOADI8_MEMBASE;
12864         case CEE_LDIND_R4:
12865                 return OP_LOADR4_MEMBASE;
12866         case CEE_LDIND_R8:
12867                 return OP_LOADR8_MEMBASE;
12868         default:
12869                 g_assert_not_reached ();
12870         }
12871
12872         return -1;
12873 }
12874
12875 static int
12876 stind_to_store_membase (int opcode)
12877 {
12878         switch (opcode) {
12879         case CEE_STIND_I1:
12880                 return OP_STOREI1_MEMBASE_REG;
12881         case CEE_STIND_I2:
12882                 return OP_STOREI2_MEMBASE_REG;
12883         case CEE_STIND_I4:
12884                 return OP_STOREI4_MEMBASE_REG;
12885         case CEE_STIND_I:
12886         case CEE_STIND_REF:
12887                 return OP_STORE_MEMBASE_REG;
12888         case CEE_STIND_I8:
12889                 return OP_STOREI8_MEMBASE_REG;
12890         case CEE_STIND_R4:
12891                 return OP_STORER4_MEMBASE_REG;
12892         case CEE_STIND_R8:
12893                 return OP_STORER8_MEMBASE_REG;
12894         default:
12895                 g_assert_not_reached ();
12896         }
12897
12898         return -1;
12899 }
12900
12901 int
12902 mono_load_membase_to_load_mem (int opcode)
12903 {
12904         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12905 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12906         switch (opcode) {
12907         case OP_LOAD_MEMBASE:
12908                 return OP_LOAD_MEM;
12909         case OP_LOADU1_MEMBASE:
12910                 return OP_LOADU1_MEM;
12911         case OP_LOADU2_MEMBASE:
12912                 return OP_LOADU2_MEM;
12913         case OP_LOADI4_MEMBASE:
12914                 return OP_LOADI4_MEM;
12915         case OP_LOADU4_MEMBASE:
12916                 return OP_LOADU4_MEM;
12917 #if SIZEOF_REGISTER == 8
12918         case OP_LOADI8_MEMBASE:
12919                 return OP_LOADI8_MEM;
12920 #endif
12921         }
12922 #endif
12923
12924         return -1;
12925 }
12926
12927 static inline int
12928 op_to_op_dest_membase (int store_opcode, int opcode)
12929 {
12930 #if defined(TARGET_X86)
12931         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12932                 return -1;
12933
12934         switch (opcode) {
12935         case OP_IADD:
12936                 return OP_X86_ADD_MEMBASE_REG;
12937         case OP_ISUB:
12938                 return OP_X86_SUB_MEMBASE_REG;
12939         case OP_IAND:
12940                 return OP_X86_AND_MEMBASE_REG;
12941         case OP_IOR:
12942                 return OP_X86_OR_MEMBASE_REG;
12943         case OP_IXOR:
12944                 return OP_X86_XOR_MEMBASE_REG;
12945         case OP_ADD_IMM:
12946         case OP_IADD_IMM:
12947                 return OP_X86_ADD_MEMBASE_IMM;
12948         case OP_SUB_IMM:
12949         case OP_ISUB_IMM:
12950                 return OP_X86_SUB_MEMBASE_IMM;
12951         case OP_AND_IMM:
12952         case OP_IAND_IMM:
12953                 return OP_X86_AND_MEMBASE_IMM;
12954         case OP_OR_IMM:
12955         case OP_IOR_IMM:
12956                 return OP_X86_OR_MEMBASE_IMM;
12957         case OP_XOR_IMM:
12958         case OP_IXOR_IMM:
12959                 return OP_X86_XOR_MEMBASE_IMM;
12960         case OP_MOVE:
12961                 return OP_NOP;
12962         }
12963 #endif
12964
12965 #if defined(TARGET_AMD64)
12966         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12967                 return -1;
12968
12969         switch (opcode) {
12970         case OP_IADD:
12971                 return OP_X86_ADD_MEMBASE_REG;
12972         case OP_ISUB:
12973                 return OP_X86_SUB_MEMBASE_REG;
12974         case OP_IAND:
12975                 return OP_X86_AND_MEMBASE_REG;
12976         case OP_IOR:
12977                 return OP_X86_OR_MEMBASE_REG;
12978         case OP_IXOR:
12979                 return OP_X86_XOR_MEMBASE_REG;
12980         case OP_IADD_IMM:
12981                 return OP_X86_ADD_MEMBASE_IMM;
12982         case OP_ISUB_IMM:
12983                 return OP_X86_SUB_MEMBASE_IMM;
12984         case OP_IAND_IMM:
12985                 return OP_X86_AND_MEMBASE_IMM;
12986         case OP_IOR_IMM:
12987                 return OP_X86_OR_MEMBASE_IMM;
12988         case OP_IXOR_IMM:
12989                 return OP_X86_XOR_MEMBASE_IMM;
12990         case OP_LADD:
12991                 return OP_AMD64_ADD_MEMBASE_REG;
12992         case OP_LSUB:
12993                 return OP_AMD64_SUB_MEMBASE_REG;
12994         case OP_LAND:
12995                 return OP_AMD64_AND_MEMBASE_REG;
12996         case OP_LOR:
12997                 return OP_AMD64_OR_MEMBASE_REG;
12998         case OP_LXOR:
12999                 return OP_AMD64_XOR_MEMBASE_REG;
13000         case OP_ADD_IMM:
13001         case OP_LADD_IMM:
13002                 return OP_AMD64_ADD_MEMBASE_IMM;
13003         case OP_SUB_IMM:
13004         case OP_LSUB_IMM:
13005                 return OP_AMD64_SUB_MEMBASE_IMM;
13006         case OP_AND_IMM:
13007         case OP_LAND_IMM:
13008                 return OP_AMD64_AND_MEMBASE_IMM;
13009         case OP_OR_IMM:
13010         case OP_LOR_IMM:
13011                 return OP_AMD64_OR_MEMBASE_IMM;
13012         case OP_XOR_IMM:
13013         case OP_LXOR_IMM:
13014                 return OP_AMD64_XOR_MEMBASE_IMM;
13015         case OP_MOVE:
13016                 return OP_NOP;
13017         }
13018 #endif
13019
13020         return -1;
13021 }
13022
13023 static inline int
13024 op_to_op_store_membase (int store_opcode, int opcode)
13025 {
13026 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13027         switch (opcode) {
13028         case OP_ICEQ:
13029                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13030                         return OP_X86_SETEQ_MEMBASE;
13031         case OP_CNE:
13032                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13033                         return OP_X86_SETNE_MEMBASE;
13034         }
13035 #endif
13036
13037         return -1;
13038 }
13039
13040 static inline int
13041 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13042 {
13043 #ifdef TARGET_X86
13044         /* FIXME: This has sign extension issues */
13045         /*
13046         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13047                 return OP_X86_COMPARE_MEMBASE8_IMM;
13048         */
13049
13050         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13051                 return -1;
13052
13053         switch (opcode) {
13054         case OP_X86_PUSH:
13055                 return OP_X86_PUSH_MEMBASE;
13056         case OP_COMPARE_IMM:
13057         case OP_ICOMPARE_IMM:
13058                 return OP_X86_COMPARE_MEMBASE_IMM;
13059         case OP_COMPARE:
13060         case OP_ICOMPARE:
13061                 return OP_X86_COMPARE_MEMBASE_REG;
13062         }
13063 #endif
13064
13065 #ifdef TARGET_AMD64
13066         /* FIXME: This has sign extension issues */
13067         /*
13068         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13069                 return OP_X86_COMPARE_MEMBASE8_IMM;
13070         */
13071
13072         switch (opcode) {
13073         case OP_X86_PUSH:
13074                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13075                         return OP_X86_PUSH_MEMBASE;
13076                 break;
13077                 /* FIXME: This only works for 32 bit immediates
13078         case OP_COMPARE_IMM:
13079         case OP_LCOMPARE_IMM:
13080                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13081                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13082                 */
13083         case OP_ICOMPARE_IMM:
13084                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13085                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13086                 break;
13087         case OP_COMPARE:
13088         case OP_LCOMPARE:
13089                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13090                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13091                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13092                         return OP_AMD64_COMPARE_MEMBASE_REG;
13093                 break;
13094         case OP_ICOMPARE:
13095                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13096                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13097                 break;
13098         }
13099 #endif
13100
13101         return -1;
13102 }
13103
13104 static inline int
13105 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13106 {
13107 #ifdef TARGET_X86
13108         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13109                 return -1;
13110
13111         switch (opcode) {
13112         case OP_COMPARE:
13113         case OP_ICOMPARE:
13114                 return OP_X86_COMPARE_REG_MEMBASE;
13115         case OP_IADD:
13116                 return OP_X86_ADD_REG_MEMBASE;
13117         case OP_ISUB:
13118                 return OP_X86_SUB_REG_MEMBASE;
13119         case OP_IAND:
13120                 return OP_X86_AND_REG_MEMBASE;
13121         case OP_IOR:
13122                 return OP_X86_OR_REG_MEMBASE;
13123         case OP_IXOR:
13124                 return OP_X86_XOR_REG_MEMBASE;
13125         }
13126 #endif
13127
13128 #ifdef TARGET_AMD64
13129         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13130                 switch (opcode) {
13131                 case OP_ICOMPARE:
13132                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13133                 case OP_IADD:
13134                         return OP_X86_ADD_REG_MEMBASE;
13135                 case OP_ISUB:
13136                         return OP_X86_SUB_REG_MEMBASE;
13137                 case OP_IAND:
13138                         return OP_X86_AND_REG_MEMBASE;
13139                 case OP_IOR:
13140                         return OP_X86_OR_REG_MEMBASE;
13141                 case OP_IXOR:
13142                         return OP_X86_XOR_REG_MEMBASE;
13143                 }
13144         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13145                 switch (opcode) {
13146                 case OP_COMPARE:
13147                 case OP_LCOMPARE:
13148                         return OP_AMD64_COMPARE_REG_MEMBASE;
13149                 case OP_LADD:
13150                         return OP_AMD64_ADD_REG_MEMBASE;
13151                 case OP_LSUB:
13152                         return OP_AMD64_SUB_REG_MEMBASE;
13153                 case OP_LAND:
13154                         return OP_AMD64_AND_REG_MEMBASE;
13155                 case OP_LOR:
13156                         return OP_AMD64_OR_REG_MEMBASE;
13157                 case OP_LXOR:
13158                         return OP_AMD64_XOR_REG_MEMBASE;
13159                 }
13160         }
13161 #endif
13162
13163         return -1;
13164 }
13165
13166 int
13167 mono_op_to_op_imm_noemul (int opcode)
13168 {
13169         switch (opcode) {
13170 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13171         case OP_LSHR:
13172         case OP_LSHL:
13173         case OP_LSHR_UN:
13174                 return -1;
13175 #endif
13176 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13177         case OP_IDIV:
13178         case OP_IDIV_UN:
13179         case OP_IREM:
13180         case OP_IREM_UN:
13181                 return -1;
13182 #endif
13183 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13184         case OP_IMUL:
13185                 return -1;
13186 #endif
13187         default:
13188                 return mono_op_to_op_imm (opcode);
13189         }
13190 }
13191
13192 /**
13193  * mono_handle_global_vregs:
13194  *
13195  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13196  * for them.
13197  */
13198 void
13199 mono_handle_global_vregs (MonoCompile *cfg)
13200 {
13201         gint32 *vreg_to_bb;
13202         MonoBasicBlock *bb;
13203         int i, pos;
13204
13205         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13206
13207 #ifdef MONO_ARCH_SIMD_INTRINSICS
13208         if (cfg->uses_simd_intrinsics)
13209                 mono_simd_simplify_indirection (cfg);
13210 #endif
13211
13212         /* Find local vregs used in more than one bb */
13213         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13214                 MonoInst *ins = bb->code;
13215                 int block_num = bb->block_num;
13216
13217                 if (cfg->verbose_level > 2)
13218                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13219
13220                 cfg->cbb = bb;
13221                 for (; ins; ins = ins->next) {
13222                         const char *spec = INS_INFO (ins->opcode);
13223                         int regtype = 0, regindex;
13224                         gint32 prev_bb;
13225
13226                         if (G_UNLIKELY (cfg->verbose_level > 2))
13227                                 mono_print_ins (ins);
13228
13229                         g_assert (ins->opcode >= MONO_CEE_LAST);
13230
13231                         for (regindex = 0; regindex < 4; regindex ++) {
13232                                 int vreg = 0;
13233
13234                                 if (regindex == 0) {
13235                                         regtype = spec [MONO_INST_DEST];
13236                                         if (regtype == ' ')
13237                                                 continue;
13238                                         vreg = ins->dreg;
13239                                 } else if (regindex == 1) {
13240                                         regtype = spec [MONO_INST_SRC1];
13241                                         if (regtype == ' ')
13242                                                 continue;
13243                                         vreg = ins->sreg1;
13244                                 } else if (regindex == 2) {
13245                                         regtype = spec [MONO_INST_SRC2];
13246                                         if (regtype == ' ')
13247                                                 continue;
13248                                         vreg = ins->sreg2;
13249                                 } else if (regindex == 3) {
13250                                         regtype = spec [MONO_INST_SRC3];
13251                                         if (regtype == ' ')
13252                                                 continue;
13253                                         vreg = ins->sreg3;
13254                                 }
13255
13256 #if SIZEOF_REGISTER == 4
13257                                 /* In the LLVM case, the long opcodes are not decomposed */
13258                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13259                                         /*
13260                                          * Since some instructions reference the original long vreg,
13261                                          * and some reference the two component vregs, it is quite hard
13262                                          * to determine when it needs to be global. So be conservative.
13263                                          */
13264                                         if (!get_vreg_to_inst (cfg, vreg)) {
13265                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13266
13267                                                 if (cfg->verbose_level > 2)
13268                                                         printf ("LONG VREG R%d made global.\n", vreg);
13269                                         }
13270
13271                                         /*
13272                                          * Make the component vregs volatile since the optimizations can
13273                                          * get confused otherwise.
13274                                          */
13275                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13276                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13277                                 }
13278 #endif
13279
13280                                 g_assert (vreg != -1);
13281
13282                                 prev_bb = vreg_to_bb [vreg];
13283                                 if (prev_bb == 0) {
13284                                         /* 0 is a valid block num */
13285                                         vreg_to_bb [vreg] = block_num + 1;
13286                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13287                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13288                                                 continue;
13289
13290                                         if (!get_vreg_to_inst (cfg, vreg)) {
13291                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13292                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13293
13294                                                 switch (regtype) {
13295                                                 case 'i':
13296                                                         if (vreg_is_ref (cfg, vreg))
13297                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13298                                                         else
13299                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13300                                                         break;
13301                                                 case 'l':
13302                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13303                                                         break;
13304                                                 case 'f':
13305                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13306                                                         break;
13307                                                 case 'v':
13308                                                 case 'x':
13309                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13310                                                         break;
13311                                                 default:
13312                                                         g_assert_not_reached ();
13313                                                 }
13314                                         }
13315
13316                                         /* Flag as having been used in more than one bb */
13317                                         vreg_to_bb [vreg] = -1;
13318                                 }
13319                         }
13320                 }
13321         }
13322
13323         /* If a variable is used in only one bblock, convert it into a local vreg */
13324         for (i = 0; i < cfg->num_varinfo; i++) {
13325                 MonoInst *var = cfg->varinfo [i];
13326                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13327
13328                 switch (var->type) {
13329                 case STACK_I4:
13330                 case STACK_OBJ:
13331                 case STACK_PTR:
13332                 case STACK_MP:
13333                 case STACK_VTYPE:
13334 #if SIZEOF_REGISTER == 8
13335                 case STACK_I8:
13336 #endif
13337 #if !defined(TARGET_X86)
13338                 /* Enabling this screws up the fp stack on x86 */
13339                 case STACK_R8:
13340 #endif
13341                         if (mono_arch_is_soft_float ())
13342                                 break;
13343
13344                         /*
13345                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13346                                 break;
13347                         */
13348
13349                         /* Arguments are implicitly global */
13350                         /* Putting R4 vars into registers doesn't work currently */
13351                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13352                         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) {
13353                                 /*
13354                                  * Make that the variable's liveness interval doesn't contain a call, since
13355                                  * that would cause the lvreg to be spilled, making the whole optimization
13356                                  * useless.
13357                                  */
13358                                 /* This is too slow for JIT compilation */
13359 #if 0
13360                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13361                                         MonoInst *ins;
13362                                         int def_index, call_index, ins_index;
13363                                         gboolean spilled = FALSE;
13364
13365                                         def_index = -1;
13366                                         call_index = -1;
13367                                         ins_index = 0;
13368                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13369                                                 const char *spec = INS_INFO (ins->opcode);
13370
13371                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13372                                                         def_index = ins_index;
13373
13374                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13375                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13376                                                         if (call_index > def_index) {
13377                                                                 spilled = TRUE;
13378                                                                 break;
13379                                                         }
13380                                                 }
13381
13382                                                 if (MONO_IS_CALL (ins))
13383                                                         call_index = ins_index;
13384
13385                                                 ins_index ++;
13386                                         }
13387
13388                                         if (spilled)
13389                                                 break;
13390                                 }
13391 #endif
13392
13393                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13394                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13395                                 var->flags |= MONO_INST_IS_DEAD;
13396                                 cfg->vreg_to_inst [var->dreg] = NULL;
13397                         }
13398                         break;
13399                 }
13400         }
13401
13402         /*
13403          * Compress the varinfo and vars tables so the liveness computation is faster and
13404          * takes up less space.
13405          */
13406         pos = 0;
13407         for (i = 0; i < cfg->num_varinfo; ++i) {
13408                 MonoInst *var = cfg->varinfo [i];
13409                 if (pos < i && cfg->locals_start == i)
13410                         cfg->locals_start = pos;
13411                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13412                         if (pos < i) {
13413                                 cfg->varinfo [pos] = cfg->varinfo [i];
13414                                 cfg->varinfo [pos]->inst_c0 = pos;
13415                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13416                                 cfg->vars [pos].idx = pos;
13417 #if SIZEOF_REGISTER == 4
13418                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13419                                         /* Modify the two component vars too */
13420                                         MonoInst *var1;
13421
13422                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13423                                         var1->inst_c0 = pos;
13424                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13425                                         var1->inst_c0 = pos;
13426                                 }
13427 #endif
13428                         }
13429                         pos ++;
13430                 }
13431         }
13432         cfg->num_varinfo = pos;
13433         if (cfg->locals_start > cfg->num_varinfo)
13434                 cfg->locals_start = cfg->num_varinfo;
13435 }
13436
13437 /*
13438  * mono_allocate_gsharedvt_vars:
13439  *
13440  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13441  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13442  */
13443 void
13444 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13445 {
13446         int i;
13447
13448         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13449
13450         for (i = 0; i < cfg->num_varinfo; ++i) {
13451                 MonoInst *ins = cfg->varinfo [i];
13452                 int idx;
13453
13454                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13455                         if (i >= cfg->locals_start) {
13456                                 /* Local */
13457                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13458                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13459                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13460                                 ins->inst_imm = idx;
13461                         } else {
13462                                 /* Arg */
13463                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13464                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13465                         }
13466                 }
13467         }
13468 }
13469
13470 /**
13471  * mono_spill_global_vars:
13472  *
13473  *   Generate spill code for variables which are not allocated to registers,
13474  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13475  * code is generated which could be optimized by the local optimization passes.
13476  */
13477 void
13478 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13479 {
13480         MonoBasicBlock *bb;
13481         char spec2 [16];
13482         int orig_next_vreg;
13483         guint32 *vreg_to_lvreg;
13484         guint32 *lvregs;
13485         guint32 i, lvregs_len, lvregs_size;
13486         gboolean dest_has_lvreg = FALSE;
13487         MonoStackType stacktypes [128];
13488         MonoInst **live_range_start, **live_range_end;
13489         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13490
13491         *need_local_opts = FALSE;
13492
13493         memset (spec2, 0, sizeof (spec2));
13494
13495         /* FIXME: Move this function to mini.c */
13496         stacktypes ['i'] = STACK_PTR;
13497         stacktypes ['l'] = STACK_I8;
13498         stacktypes ['f'] = STACK_R8;
13499 #ifdef MONO_ARCH_SIMD_INTRINSICS
13500         stacktypes ['x'] = STACK_VTYPE;
13501 #endif
13502
13503 #if SIZEOF_REGISTER == 4
13504         /* Create MonoInsts for longs */
13505         for (i = 0; i < cfg->num_varinfo; i++) {
13506                 MonoInst *ins = cfg->varinfo [i];
13507
13508                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13509                         switch (ins->type) {
13510                         case STACK_R8:
13511                         case STACK_I8: {
13512                                 MonoInst *tree;
13513
13514                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13515                                         break;
13516
13517                                 g_assert (ins->opcode == OP_REGOFFSET);
13518
13519                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13520                                 g_assert (tree);
13521                                 tree->opcode = OP_REGOFFSET;
13522                                 tree->inst_basereg = ins->inst_basereg;
13523                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13524
13525                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13526                                 g_assert (tree);
13527                                 tree->opcode = OP_REGOFFSET;
13528                                 tree->inst_basereg = ins->inst_basereg;
13529                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13530                                 break;
13531                         }
13532                         default:
13533                                 break;
13534                         }
13535                 }
13536         }
13537 #endif
13538
13539         if (cfg->compute_gc_maps) {
13540                 /* registers need liveness info even for !non refs */
13541                 for (i = 0; i < cfg->num_varinfo; i++) {
13542                         MonoInst *ins = cfg->varinfo [i];
13543
13544                         if (ins->opcode == OP_REGVAR)
13545                                 ins->flags |= MONO_INST_GC_TRACK;
13546                 }
13547         }
13548
13549         /* FIXME: widening and truncation */
13550
13551         /*
13552          * As an optimization, when a variable allocated to the stack is first loaded into
13553          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13554          * the variable again.
13555          */
13556         orig_next_vreg = cfg->next_vreg;
13557         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13558         lvregs_size = 1024;
13559         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13560         lvregs_len = 0;
13561
13562         /*
13563          * These arrays contain the first and last instructions accessing a given
13564          * variable.
13565          * Since we emit bblocks in the same order we process them here, and we
13566          * don't split live ranges, these will precisely describe the live range of
13567          * the variable, i.e. the instruction range where a valid value can be found
13568          * in the variables location.
13569          * The live range is computed using the liveness info computed by the liveness pass.
13570          * We can't use vmv->range, since that is an abstract live range, and we need
13571          * one which is instruction precise.
13572          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13573          */
13574         /* FIXME: Only do this if debugging info is requested */
13575         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13576         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13577         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13578         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13579
13580         /* Add spill loads/stores */
13581         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13582                 MonoInst *ins;
13583
13584                 if (cfg->verbose_level > 2)
13585                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13586
13587                 /* Clear vreg_to_lvreg array */
13588                 for (i = 0; i < lvregs_len; i++)
13589                         vreg_to_lvreg [lvregs [i]] = 0;
13590                 lvregs_len = 0;
13591
13592                 cfg->cbb = bb;
13593                 MONO_BB_FOR_EACH_INS (bb, ins) {
13594                         const char *spec = INS_INFO (ins->opcode);
13595                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13596                         gboolean store, no_lvreg;
13597                         int sregs [MONO_MAX_SRC_REGS];
13598
13599                         if (G_UNLIKELY (cfg->verbose_level > 2))
13600                                 mono_print_ins (ins);
13601
13602                         if (ins->opcode == OP_NOP)
13603                                 continue;
13604
13605                         /*
13606                          * We handle LDADDR here as well, since it can only be decomposed
13607                          * when variable addresses are known.
13608                          */
13609                         if (ins->opcode == OP_LDADDR) {
13610                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13611
13612                                 if (var->opcode == OP_VTARG_ADDR) {
13613                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13614                                         MonoInst *vtaddr = var->inst_left;
13615                                         if (vtaddr->opcode == OP_REGVAR) {
13616                                                 ins->opcode = OP_MOVE;
13617                                                 ins->sreg1 = vtaddr->dreg;
13618                                         }
13619                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13620                                                 ins->opcode = OP_LOAD_MEMBASE;
13621                                                 ins->inst_basereg = vtaddr->inst_basereg;
13622                                                 ins->inst_offset = vtaddr->inst_offset;
13623                                         } else
13624                                                 NOT_IMPLEMENTED;
13625                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13626                                         /* gsharedvt arg passed by ref */
13627                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13628
13629                                         ins->opcode = OP_LOAD_MEMBASE;
13630                                         ins->inst_basereg = var->inst_basereg;
13631                                         ins->inst_offset = var->inst_offset;
13632                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13633                                         MonoInst *load, *load2, *load3;
13634                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13635                                         int reg1, reg2, reg3;
13636                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13637                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13638
13639                                         /*
13640                                          * gsharedvt local.
13641                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13642                                          */
13643
13644                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13645
13646                                         g_assert (info_var);
13647                                         g_assert (locals_var);
13648
13649                                         /* Mark the instruction used to compute the locals var as used */
13650                                         cfg->gsharedvt_locals_var_ins = NULL;
13651
13652                                         /* Load the offset */
13653                                         if (info_var->opcode == OP_REGOFFSET) {
13654                                                 reg1 = alloc_ireg (cfg);
13655                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13656                                         } else if (info_var->opcode == OP_REGVAR) {
13657                                                 load = NULL;
13658                                                 reg1 = info_var->dreg;
13659                                         } else {
13660                                                 g_assert_not_reached ();
13661                                         }
13662                                         reg2 = alloc_ireg (cfg);
13663                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13664                                         /* Load the locals area address */
13665                                         reg3 = alloc_ireg (cfg);
13666                                         if (locals_var->opcode == OP_REGOFFSET) {
13667                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13668                                         } else if (locals_var->opcode == OP_REGVAR) {
13669                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13670                                         } else {
13671                                                 g_assert_not_reached ();
13672                                         }
13673                                         /* Compute the address */
13674                                         ins->opcode = OP_PADD;
13675                                         ins->sreg1 = reg3;
13676                                         ins->sreg2 = reg2;
13677
13678                                         mono_bblock_insert_before_ins (bb, ins, load3);
13679                                         mono_bblock_insert_before_ins (bb, load3, load2);
13680                                         if (load)
13681                                                 mono_bblock_insert_before_ins (bb, load2, load);
13682                                 } else {
13683                                         g_assert (var->opcode == OP_REGOFFSET);
13684
13685                                         ins->opcode = OP_ADD_IMM;
13686                                         ins->sreg1 = var->inst_basereg;
13687                                         ins->inst_imm = var->inst_offset;
13688                                 }
13689
13690                                 *need_local_opts = TRUE;
13691                                 spec = INS_INFO (ins->opcode);
13692                         }
13693
13694                         if (ins->opcode < MONO_CEE_LAST) {
13695                                 mono_print_ins (ins);
13696                                 g_assert_not_reached ();
13697                         }
13698
13699                         /*
13700                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13701                          * src register.
13702                          * FIXME:
13703                          */
13704                         if (MONO_IS_STORE_MEMBASE (ins)) {
13705                                 tmp_reg = ins->dreg;
13706                                 ins->dreg = ins->sreg2;
13707                                 ins->sreg2 = tmp_reg;
13708                                 store = TRUE;
13709
13710                                 spec2 [MONO_INST_DEST] = ' ';
13711                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13712                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13713                                 spec2 [MONO_INST_SRC3] = ' ';
13714                                 spec = spec2;
13715                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13716                                 g_assert_not_reached ();
13717                         else
13718                                 store = FALSE;
13719                         no_lvreg = FALSE;
13720
13721                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13722                                 printf ("\t %.3s %d", spec, ins->dreg);
13723                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13724                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13725                                         printf (" %d", sregs [srcindex]);
13726                                 printf ("\n");
13727                         }
13728
13729                         /***************/
13730                         /*    DREG     */
13731                         /***************/
13732                         regtype = spec [MONO_INST_DEST];
13733                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13734                         prev_dreg = -1;
13735
13736                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13737                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13738                                 MonoInst *store_ins;
13739                                 int store_opcode;
13740                                 MonoInst *def_ins = ins;
13741                                 int dreg = ins->dreg; /* The original vreg */
13742
13743                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13744
13745                                 if (var->opcode == OP_REGVAR) {
13746                                         ins->dreg = var->dreg;
13747                                 } 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)) {
13748                                         /*
13749                                          * Instead of emitting a load+store, use a _membase opcode.
13750                                          */
13751                                         g_assert (var->opcode == OP_REGOFFSET);
13752                                         if (ins->opcode == OP_MOVE) {
13753                                                 NULLIFY_INS (ins);
13754                                                 def_ins = NULL;
13755                                         } else {
13756                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13757                                                 ins->inst_basereg = var->inst_basereg;
13758                                                 ins->inst_offset = var->inst_offset;
13759                                                 ins->dreg = -1;
13760                                         }
13761                                         spec = INS_INFO (ins->opcode);
13762                                 } else {
13763                                         guint32 lvreg;
13764
13765                                         g_assert (var->opcode == OP_REGOFFSET);
13766
13767                                         prev_dreg = ins->dreg;
13768
13769                                         /* Invalidate any previous lvreg for this vreg */
13770                                         vreg_to_lvreg [ins->dreg] = 0;
13771
13772                                         lvreg = 0;
13773
13774                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13775                                                 regtype = 'l';
13776                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13777                                         }
13778
13779                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13780
13781 #if SIZEOF_REGISTER != 8
13782                                         if (regtype == 'l') {
13783                                                 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));
13784                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13785                                                 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));
13786                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13787                                                 def_ins = store_ins;
13788                                         }
13789                                         else
13790 #endif
13791                                         {
13792                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13793
13794                                                 /* Try to fuse the store into the instruction itself */
13795                                                 /* FIXME: Add more instructions */
13796                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13797                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13798                                                         ins->inst_imm = ins->inst_c0;
13799                                                         ins->inst_destbasereg = var->inst_basereg;
13800                                                         ins->inst_offset = var->inst_offset;
13801                                                         spec = INS_INFO (ins->opcode);
13802                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13803                                                         ins->opcode = store_opcode;
13804                                                         ins->inst_destbasereg = var->inst_basereg;
13805                                                         ins->inst_offset = var->inst_offset;
13806
13807                                                         no_lvreg = TRUE;
13808
13809                                                         tmp_reg = ins->dreg;
13810                                                         ins->dreg = ins->sreg2;
13811                                                         ins->sreg2 = tmp_reg;
13812                                                         store = TRUE;
13813
13814                                                         spec2 [MONO_INST_DEST] = ' ';
13815                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13816                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13817                                                         spec2 [MONO_INST_SRC3] = ' ';
13818                                                         spec = spec2;
13819                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13820                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13821                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13822                                                         ins->dreg = -1;
13823                                                         ins->inst_basereg = var->inst_basereg;
13824                                                         ins->inst_offset = var->inst_offset;
13825                                                         spec = INS_INFO (ins->opcode);
13826                                                 } else {
13827                                                         /* printf ("INS: "); mono_print_ins (ins); */
13828                                                         /* Create a store instruction */
13829                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13830
13831                                                         /* Insert it after the instruction */
13832                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13833
13834                                                         def_ins = store_ins;
13835
13836                                                         /*
13837                                                          * We can't assign ins->dreg to var->dreg here, since the
13838                                                          * sregs could use it. So set a flag, and do it after
13839                                                          * the sregs.
13840                                                          */
13841                                                         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)))
13842                                                                 dest_has_lvreg = TRUE;
13843                                                 }
13844                                         }
13845                                 }
13846
13847                                 if (def_ins && !live_range_start [dreg]) {
13848                                         live_range_start [dreg] = def_ins;
13849                                         live_range_start_bb [dreg] = bb;
13850                                 }
13851
13852                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13853                                         MonoInst *tmp;
13854
13855                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13856                                         tmp->inst_c1 = dreg;
13857                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13858                                 }
13859                         }
13860
13861                         /************/
13862                         /*  SREGS   */
13863                         /************/
13864                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13865                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13866                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13867                                 sreg = sregs [srcindex];
13868
13869                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13870                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13871                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13872                                         MonoInst *use_ins = ins;
13873                                         MonoInst *load_ins;
13874                                         guint32 load_opcode;
13875
13876                                         if (var->opcode == OP_REGVAR) {
13877                                                 sregs [srcindex] = var->dreg;
13878                                                 //mono_inst_set_src_registers (ins, sregs);
13879                                                 live_range_end [sreg] = use_ins;
13880                                                 live_range_end_bb [sreg] = bb;
13881
13882                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13883                                                         MonoInst *tmp;
13884
13885                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13886                                                         /* var->dreg is a hreg */
13887                                                         tmp->inst_c1 = sreg;
13888                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13889                                                 }
13890
13891                                                 continue;
13892                                         }
13893
13894                                         g_assert (var->opcode == OP_REGOFFSET);
13895
13896                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13897
13898                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13899
13900                                         if (vreg_to_lvreg [sreg]) {
13901                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13902
13903                                                 /* The variable is already loaded to an lvreg */
13904                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13905                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13906                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13907                                                 //mono_inst_set_src_registers (ins, sregs);
13908                                                 continue;
13909                                         }
13910
13911                                         /* Try to fuse the load into the instruction */
13912                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13913                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13914                                                 sregs [0] = var->inst_basereg;
13915                                                 //mono_inst_set_src_registers (ins, sregs);
13916                                                 ins->inst_offset = var->inst_offset;
13917                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13918                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13919                                                 sregs [1] = var->inst_basereg;
13920                                                 //mono_inst_set_src_registers (ins, sregs);
13921                                                 ins->inst_offset = var->inst_offset;
13922                                         } else {
13923                                                 if (MONO_IS_REAL_MOVE (ins)) {
13924                                                         ins->opcode = OP_NOP;
13925                                                         sreg = ins->dreg;
13926                                                 } else {
13927                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13928
13929                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13930
13931                                                         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) {
13932                                                                 if (var->dreg == prev_dreg) {
13933                                                                         /*
13934                                                                          * sreg refers to the value loaded by the load
13935                                                                          * emitted below, but we need to use ins->dreg
13936                                                                          * since it refers to the store emitted earlier.
13937                                                                          */
13938                                                                         sreg = ins->dreg;
13939                                                                 }
13940                                                                 g_assert (sreg != -1);
13941                                                                 vreg_to_lvreg [var->dreg] = sreg;
13942                                                                 if (lvregs_len >= lvregs_size) {
13943                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13944                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13945                                                                         lvregs = new_lvregs;
13946                                                                         lvregs_size *= 2;
13947                                                                 }
13948                                                                 lvregs [lvregs_len ++] = var->dreg;
13949                                                         }
13950                                                 }
13951
13952                                                 sregs [srcindex] = sreg;
13953                                                 //mono_inst_set_src_registers (ins, sregs);
13954
13955 #if SIZEOF_REGISTER != 8
13956                                                 if (regtype == 'l') {
13957                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13958                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13959                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13960                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13961                                                         use_ins = load_ins;
13962                                                 }
13963                                                 else
13964 #endif
13965                                                 {
13966 #if SIZEOF_REGISTER == 4
13967                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13968 #endif
13969                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13970                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13971                                                         use_ins = load_ins;
13972                                                 }
13973                                         }
13974
13975                                         if (var->dreg < orig_next_vreg) {
13976                                                 live_range_end [var->dreg] = use_ins;
13977                                                 live_range_end_bb [var->dreg] = bb;
13978                                         }
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                                                 tmp->inst_c1 = var->dreg;
13985                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
13986                                         }
13987                                 }
13988                         }
13989                         mono_inst_set_src_registers (ins, sregs);
13990
13991                         if (dest_has_lvreg) {
13992                                 g_assert (ins->dreg != -1);
13993                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
13994                                 if (lvregs_len >= lvregs_size) {
13995                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13996                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13997                                         lvregs = new_lvregs;
13998                                         lvregs_size *= 2;
13999                                 }
14000                                 lvregs [lvregs_len ++] = prev_dreg;
14001                                 dest_has_lvreg = FALSE;
14002                         }
14003
14004                         if (store) {
14005                                 tmp_reg = ins->dreg;
14006                                 ins->dreg = ins->sreg2;
14007                                 ins->sreg2 = tmp_reg;
14008                         }
14009
14010                         if (MONO_IS_CALL (ins)) {
14011                                 /* Clear vreg_to_lvreg array */
14012                                 for (i = 0; i < lvregs_len; i++)
14013                                         vreg_to_lvreg [lvregs [i]] = 0;
14014                                 lvregs_len = 0;
14015                         } else if (ins->opcode == OP_NOP) {
14016                                 ins->dreg = -1;
14017                                 MONO_INST_NULLIFY_SREGS (ins);
14018                         }
14019
14020                         if (cfg->verbose_level > 2)
14021                                 mono_print_ins_index (1, ins);
14022                 }
14023
14024                 /* Extend the live range based on the liveness info */
14025                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14026                         for (i = 0; i < cfg->num_varinfo; i ++) {
14027                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14028
14029                                 if (vreg_is_volatile (cfg, vi->vreg))
14030                                         /* The liveness info is incomplete */
14031                                         continue;
14032
14033                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14034                                         /* Live from at least the first ins of this bb */
14035                                         live_range_start [vi->vreg] = bb->code;
14036                                         live_range_start_bb [vi->vreg] = bb;
14037                                 }
14038
14039                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14040                                         /* Live at least until the last ins of this bb */
14041                                         live_range_end [vi->vreg] = bb->last_ins;
14042                                         live_range_end_bb [vi->vreg] = bb;
14043                                 }
14044                         }
14045                 }
14046         }
14047
14048         /*
14049          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14050          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14051          */
14052         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14053                 for (i = 0; i < cfg->num_varinfo; ++i) {
14054                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14055                         MonoInst *ins;
14056
14057                         if (live_range_start [vreg]) {
14058                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14059                                 ins->inst_c0 = i;
14060                                 ins->inst_c1 = vreg;
14061                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14062                         }
14063                         if (live_range_end [vreg]) {
14064                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14065                                 ins->inst_c0 = i;
14066                                 ins->inst_c1 = vreg;
14067                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14068                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14069                                 else
14070                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14071                         }
14072                 }
14073         }
14074
14075         if (cfg->gsharedvt_locals_var_ins) {
14076                 /* Nullify if unused */
14077                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14078                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14079         }
14080
14081         g_free (live_range_start);
14082         g_free (live_range_end);
14083         g_free (live_range_start_bb);
14084         g_free (live_range_end_bb);
14085 }
14086
14087
14088 /**
14089  * FIXME:
14090  * - use 'iadd' instead of 'int_add'
14091  * - handling ovf opcodes: decompose in method_to_ir.
14092  * - unify iregs/fregs
14093  *   -> partly done, the missing parts are:
14094  *   - a more complete unification would involve unifying the hregs as well, so
14095  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14096  *     would no longer map to the machine hregs, so the code generators would need to
14097  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14098  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14099  *     fp/non-fp branches speeds it up by about 15%.
14100  * - use sext/zext opcodes instead of shifts
14101  * - add OP_ICALL
14102  * - get rid of TEMPLOADs if possible and use vregs instead
14103  * - clean up usage of OP_P/OP_ opcodes
14104  * - cleanup usage of DUMMY_USE
14105  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14106  *   stack
14107  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14108  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14109  * - make sure handle_stack_args () is called before the branch is emitted
14110  * - when the new IR is done, get rid of all unused stuff
14111  * - COMPARE/BEQ as separate instructions or unify them ?
14112  *   - keeping them separate allows specialized compare instructions like
14113  *     compare_imm, compare_membase
14114  *   - most back ends unify fp compare+branch, fp compare+ceq
14115  * - integrate mono_save_args into inline_method
14116  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14117  * - handle long shift opts on 32 bit platforms somehow: they require
14118  *   3 sregs (2 for arg1 and 1 for arg2)
14119  * - make byref a 'normal' type.
14120  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14121  *   variable if needed.
14122  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14123  *   like inline_method.
14124  * - remove inlining restrictions
14125  * - fix LNEG and enable cfold of INEG
14126  * - generalize x86 optimizations like ldelema as a peephole optimization
14127  * - add store_mem_imm for amd64
14128  * - optimize the loading of the interruption flag in the managed->native wrappers
14129  * - avoid special handling of OP_NOP in passes
14130  * - move code inserting instructions into one function/macro.
14131  * - try a coalescing phase after liveness analysis
14132  * - add float -> vreg conversion + local optimizations on !x86
14133  * - figure out how to handle decomposed branches during optimizations, ie.
14134  *   compare+branch, op_jump_table+op_br etc.
14135  * - promote RuntimeXHandles to vregs
14136  * - vtype cleanups:
14137  *   - add a NEW_VARLOADA_VREG macro
14138  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14139  *   accessing vtype fields.
14140  * - get rid of I8CONST on 64 bit platforms
14141  * - dealing with the increase in code size due to branches created during opcode
14142  *   decomposition:
14143  *   - use extended basic blocks
14144  *     - all parts of the JIT
14145  *     - handle_global_vregs () && local regalloc
14146  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14147  * - sources of increase in code size:
14148  *   - vtypes
14149  *   - long compares
14150  *   - isinst and castclass
14151  *   - lvregs not allocated to global registers even if used multiple times
14152  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14153  *   meaningful.
14154  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14155  * - add all micro optimizations from the old JIT
14156  * - put tree optimizations into the deadce pass
14157  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14158  *   specific function.
14159  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14160  *   fcompare + branchCC.
14161  * - create a helper function for allocating a stack slot, taking into account
14162  *   MONO_CFG_HAS_SPILLUP.
14163  * - merge r68207.
14164  * - optimize mono_regstate2_alloc_int/float.
14165  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14166  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14167  *   parts of the tree could be separated by other instructions, killing the tree
14168  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14169  *   instructions if the result of the load is used multiple times ?
14170  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14171  * - LAST MERGE: 108395.
14172  * - when returning vtypes in registers, generate IR and append it to the end of the
14173  *   last bb instead of doing it in the epilog.
14174  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14175  */
14176
14177 /*
14178
14179 NOTES
14180 -----
14181
14182 - When to decompose opcodes:
14183   - earlier: this makes some optimizations hard to implement, since the low level IR
14184   no longer contains the neccessary information. But it is easier to do.
14185   - later: harder to implement, enables more optimizations.
14186 - Branches inside bblocks:
14187   - created when decomposing complex opcodes.
14188     - branches to another bblock: harmless, but not tracked by the branch
14189       optimizations, so need to branch to a label at the start of the bblock.
14190     - branches to inside the same bblock: very problematic, trips up the local
14191       reg allocator. Can be fixed by spitting the current bblock, but that is a
14192       complex operation, since some local vregs can become global vregs etc.
14193 - Local/global vregs:
14194   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14195     local register allocator.
14196   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14197     structure, created by mono_create_var (). Assigned to hregs or the stack by
14198     the global register allocator.
14199 - When to do optimizations like alu->alu_imm:
14200   - earlier -> saves work later on since the IR will be smaller/simpler
14201   - later -> can work on more instructions
14202 - Handling of valuetypes:
14203   - When a vtype is pushed on the stack, a new temporary is created, an
14204     instruction computing its address (LDADDR) is emitted and pushed on
14205     the stack. Need to optimize cases when the vtype is used immediately as in
14206     argument passing, stloc etc.
14207 - Instead of the to_end stuff in the old JIT, simply call the function handling
14208   the values on the stack before emitting the last instruction of the bb.
14209 */
14210
14211 #endif /* !DISABLE_JIT */