mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static void
1768 emit_instrumentation_call (MonoCompile *cfg, void *func)
1769 {
1770         MonoInst *iargs [1];
1771
1772         /*
1773          * Avoid instrumenting inlined methods since it can
1774          * distort profiling results.
1775          */
1776         if (cfg->method != cfg->current_method)
1777                 return;
1778
1779         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
1780                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1781                 mono_emit_jit_icall (cfg, func, iargs);
1782         }
1783 }
1784
1785 static int
1786 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1787 {
1788 handle_enum:
1789         type = mini_get_underlying_type (type);
1790         switch (type->type) {
1791         case MONO_TYPE_VOID:
1792                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1793         case MONO_TYPE_I1:
1794         case MONO_TYPE_U1:
1795         case MONO_TYPE_I2:
1796         case MONO_TYPE_U2:
1797         case MONO_TYPE_I4:
1798         case MONO_TYPE_U4:
1799                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1800         case MONO_TYPE_I:
1801         case MONO_TYPE_U:
1802         case MONO_TYPE_PTR:
1803         case MONO_TYPE_FNPTR:
1804                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1805         case MONO_TYPE_CLASS:
1806         case MONO_TYPE_STRING:
1807         case MONO_TYPE_OBJECT:
1808         case MONO_TYPE_SZARRAY:
1809         case MONO_TYPE_ARRAY:
1810                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1811         case MONO_TYPE_I8:
1812         case MONO_TYPE_U8:
1813                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1814         case MONO_TYPE_R4:
1815                 if (cfg->r4fp)
1816                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1817                 else
1818                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1819         case MONO_TYPE_R8:
1820                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1821         case MONO_TYPE_VALUETYPE:
1822                 if (type->data.klass->enumtype) {
1823                         type = mono_class_enum_basetype (type->data.klass);
1824                         goto handle_enum;
1825                 } else
1826                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1827         case MONO_TYPE_TYPEDBYREF:
1828                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1829         case MONO_TYPE_GENERICINST:
1830                 type = &type->data.generic_class->container_class->byval_arg;
1831                 goto handle_enum;
1832         case MONO_TYPE_VAR:
1833         case MONO_TYPE_MVAR:
1834                 /* gsharedvt */
1835                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1836         default:
1837                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1838         }
1839         return -1;
1840 }
1841
1842 //XXX this ignores if t is byref
1843 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
1844
1845 /*
1846  * target_type_is_incompatible:
1847  * @cfg: MonoCompile context
1848  *
1849  * Check that the item @arg on the evaluation stack can be stored
1850  * in the target type (can be a local, or field, etc).
1851  * The cfg arg can be used to check if we need verification or just
1852  * validity checks.
1853  *
1854  * Returns: non-0 value if arg can't be stored on a target.
1855  */
1856 static int
1857 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1858 {
1859         MonoType *simple_type;
1860         MonoClass *klass;
1861
1862         if (target->byref) {
1863                 /* FIXME: check that the pointed to types match */
1864                 if (arg->type == STACK_MP) {
1865                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1866                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1867                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1868
1869                         /* if the target is native int& or same type */
1870                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1871                                 return 0;
1872
1873                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1874                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1875                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1876                                 return 0;
1877                         return 1;
1878                 }
1879                 if (arg->type == STACK_PTR)
1880                         return 0;
1881                 return 1;
1882         }
1883
1884         simple_type = mini_get_underlying_type (target);
1885         switch (simple_type->type) {
1886         case MONO_TYPE_VOID:
1887                 return 1;
1888         case MONO_TYPE_I1:
1889         case MONO_TYPE_U1:
1890         case MONO_TYPE_I2:
1891         case MONO_TYPE_U2:
1892         case MONO_TYPE_I4:
1893         case MONO_TYPE_U4:
1894                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1895                         return 1;
1896                 return 0;
1897         case MONO_TYPE_PTR:
1898                 /* STACK_MP is needed when setting pinned locals */
1899                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1900                         return 1;
1901                 return 0;
1902         case MONO_TYPE_I:
1903         case MONO_TYPE_U:
1904         case MONO_TYPE_FNPTR:
1905                 /*
1906                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1907                  * in native int. (#688008).
1908                  */
1909                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_CLASS:
1913         case MONO_TYPE_STRING:
1914         case MONO_TYPE_OBJECT:
1915         case MONO_TYPE_SZARRAY:
1916         case MONO_TYPE_ARRAY:
1917                 if (arg->type != STACK_OBJ)
1918                         return 1;
1919                 /* FIXME: check type compatibility */
1920                 return 0;
1921         case MONO_TYPE_I8:
1922         case MONO_TYPE_U8:
1923                 if (arg->type != STACK_I8)
1924                         return 1;
1925                 return 0;
1926         case MONO_TYPE_R4:
1927                 if (arg->type != cfg->r4_stack_type)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_R8:
1931                 if (arg->type != STACK_R8)
1932                         return 1;
1933                 return 0;
1934         case MONO_TYPE_VALUETYPE:
1935                 if (arg->type != STACK_VTYPE)
1936                         return 1;
1937                 klass = mono_class_from_mono_type (simple_type);
1938                 if (klass != arg->klass)
1939                         return 1;
1940                 return 0;
1941         case MONO_TYPE_TYPEDBYREF:
1942                 if (arg->type != STACK_VTYPE)
1943                         return 1;
1944                 klass = mono_class_from_mono_type (simple_type);
1945                 if (klass != arg->klass)
1946                         return 1;
1947                 return 0;
1948         case MONO_TYPE_GENERICINST:
1949                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1950                         MonoClass *target_class;
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                         klass = mono_class_from_mono_type (simple_type);
1954                         target_class = mono_class_from_mono_type (target);
1955                         /* The second cases is needed when doing partial sharing */
1956                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1957                                 return 1;
1958                         return 0;
1959                 } else {
1960                         if (arg->type != STACK_OBJ)
1961                                 return 1;
1962                         /* FIXME: check type compatibility */
1963                         return 0;
1964                 }
1965         case MONO_TYPE_VAR:
1966         case MONO_TYPE_MVAR:
1967                 g_assert (cfg->gshared);
1968                 if (mini_type_var_is_vt (simple_type)) {
1969                         if (arg->type != STACK_VTYPE)
1970                                 return 1;
1971                 } else {
1972                         if (arg->type != STACK_OBJ)
1973                                 return 1;
1974                 }
1975                 return 0;
1976         default:
1977                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1978         }
1979         return 1;
1980 }
1981
1982 /*
1983  * Prepare arguments for passing to a function call.
1984  * Return a non-zero value if the arguments can't be passed to the given
1985  * signature.
1986  * The type checks are not yet complete and some conversions may need
1987  * casts on 32 or 64 bit architectures.
1988  *
1989  * FIXME: implement this using target_type_is_incompatible ()
1990  */
1991 static int
1992 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1993 {
1994         MonoType *simple_type;
1995         int i;
1996
1997         if (sig->hasthis) {
1998                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1999                         return 1;
2000                 args++;
2001         }
2002         for (i = 0; i < sig->param_count; ++i) {
2003                 if (sig->params [i]->byref) {
2004                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2005                                 return 1;
2006                         continue;
2007                 }
2008                 simple_type = mini_get_underlying_type (sig->params [i]);
2009 handle_enum:
2010                 switch (simple_type->type) {
2011                 case MONO_TYPE_VOID:
2012                         return 1;
2013                         continue;
2014                 case MONO_TYPE_I1:
2015                 case MONO_TYPE_U1:
2016                 case MONO_TYPE_I2:
2017                 case MONO_TYPE_U2:
2018                 case MONO_TYPE_I4:
2019                 case MONO_TYPE_U4:
2020                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2021                                 return 1;
2022                         continue;
2023                 case MONO_TYPE_I:
2024                 case MONO_TYPE_U:
2025                 case MONO_TYPE_PTR:
2026                 case MONO_TYPE_FNPTR:
2027                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_CLASS:
2031                 case MONO_TYPE_STRING:
2032                 case MONO_TYPE_OBJECT:
2033                 case MONO_TYPE_SZARRAY:
2034                 case MONO_TYPE_ARRAY:
2035                         if (args [i]->type != STACK_OBJ)
2036                                 return 1;
2037                         continue;
2038                 case MONO_TYPE_I8:
2039                 case MONO_TYPE_U8:
2040                         if (args [i]->type != STACK_I8)
2041                                 return 1;
2042                         continue;
2043                 case MONO_TYPE_R4:
2044                         if (args [i]->type != cfg->r4_stack_type)
2045                                 return 1;
2046                         continue;
2047                 case MONO_TYPE_R8:
2048                         if (args [i]->type != STACK_R8)
2049                                 return 1;
2050                         continue;
2051                 case MONO_TYPE_VALUETYPE:
2052                         if (simple_type->data.klass->enumtype) {
2053                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2054                                 goto handle_enum;
2055                         }
2056                         if (args [i]->type != STACK_VTYPE)
2057                                 return 1;
2058                         continue;
2059                 case MONO_TYPE_TYPEDBYREF:
2060                         if (args [i]->type != STACK_VTYPE)
2061                                 return 1;
2062                         continue;
2063                 case MONO_TYPE_GENERICINST:
2064                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2065                         goto handle_enum;
2066                 case MONO_TYPE_VAR:
2067                 case MONO_TYPE_MVAR:
2068                         /* gsharedvt */
2069                         if (args [i]->type != STACK_VTYPE)
2070                                 return 1;
2071                         continue;
2072                 default:
2073                         g_error ("unknown type 0x%02x in check_call_signature",
2074                                  simple_type->type);
2075                 }
2076         }
2077         return 0;
2078 }
2079
2080 static int
2081 callvirt_to_call (int opcode)
2082 {
2083         switch (opcode) {
2084         case OP_CALL_MEMBASE:
2085                 return OP_CALL;
2086         case OP_VOIDCALL_MEMBASE:
2087                 return OP_VOIDCALL;
2088         case OP_FCALL_MEMBASE:
2089                 return OP_FCALL;
2090         case OP_RCALL_MEMBASE:
2091                 return OP_RCALL;
2092         case OP_VCALL_MEMBASE:
2093                 return OP_VCALL;
2094         case OP_LCALL_MEMBASE:
2095                 return OP_LCALL;
2096         default:
2097                 g_assert_not_reached ();
2098         }
2099
2100         return -1;
2101 }
2102
2103 static int
2104 callvirt_to_call_reg (int opcode)
2105 {
2106         switch (opcode) {
2107         case OP_CALL_MEMBASE:
2108                 return OP_CALL_REG;
2109         case OP_VOIDCALL_MEMBASE:
2110                 return OP_VOIDCALL_REG;
2111         case OP_FCALL_MEMBASE:
2112                 return OP_FCALL_REG;
2113         case OP_RCALL_MEMBASE:
2114                 return OP_RCALL_REG;
2115         case OP_VCALL_MEMBASE:
2116                 return OP_VCALL_REG;
2117         case OP_LCALL_MEMBASE:
2118                 return OP_LCALL_REG;
2119         default:
2120                 g_assert_not_reached ();
2121         }
2122
2123         return -1;
2124 }
2125
2126 /* Either METHOD or IMT_ARG needs to be set */
2127 static void
2128 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2129 {
2130         int method_reg;
2131
2132         if (COMPILE_LLVM (cfg)) {
2133                 if (imt_arg) {
2134                         method_reg = alloc_preg (cfg);
2135                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2136                 } else {
2137                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2138                         method_reg = ins->dreg;
2139                 }
2140
2141 #ifdef ENABLE_LLVM
2142                 call->imt_arg_reg = method_reg;
2143 #endif
2144                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2145                 return;
2146         }
2147
2148         if (imt_arg) {
2149                 method_reg = alloc_preg (cfg);
2150                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2151         } else {
2152                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2153                 method_reg = ins->dreg;
2154         }
2155
2156         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2157 }
2158
2159 static MonoJumpInfo *
2160 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2161 {
2162         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2163
2164         ji->ip.i = ip;
2165         ji->type = type;
2166         ji->data.target = target;
2167
2168         return ji;
2169 }
2170
2171 int
2172 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2173 {
2174         if (cfg->gshared)
2175                 return mono_class_check_context_used (klass);
2176         else
2177                 return 0;
2178 }
2179
2180 static int
2181 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2182 {
2183         if (cfg->gshared)
2184                 return mono_method_check_context_used (method);
2185         else
2186                 return 0;
2187 }
2188
2189 /*
2190  * check_method_sharing:
2191  *
2192  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2193  */
2194 static void
2195 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2196 {
2197         gboolean pass_vtable = FALSE;
2198         gboolean pass_mrgctx = FALSE;
2199
2200         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2201                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2202                 gboolean sharable = FALSE;
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2205                         sharable = TRUE;
2206
2207                 /*
2208                  * Pass vtable iff target method might
2209                  * be shared, which means that sharing
2210                  * is enabled for its class and its
2211                  * context is sharable (and it's not a
2212                  * generic method).
2213                  */
2214                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2215                         pass_vtable = TRUE;
2216         }
2217
2218         if (mini_method_get_context (cmethod) &&
2219                 mini_method_get_context (cmethod)->method_inst) {
2220                 g_assert (!pass_vtable);
2221
2222                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2223                         pass_mrgctx = TRUE;
2224                 } else {
2225                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2226                                 pass_mrgctx = TRUE;
2227                 }
2228         }
2229
2230         if (out_pass_vtable)
2231                 *out_pass_vtable = pass_vtable;
2232         if (out_pass_mrgctx)
2233                 *out_pass_mrgctx = pass_mrgctx;
2234 }
2235
2236 inline static MonoCallInst *
2237 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2238                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2239 {
2240         MonoType *sig_ret;
2241         MonoCallInst *call;
2242 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2243         int i;
2244 #endif
2245
2246         if (cfg->llvm_only)
2247                 tail = FALSE;
2248
2249         if (tail) {
2250                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2251
2252                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2253         } else
2254                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2255
2256         call->args = args;
2257         call->signature = sig;
2258         call->rgctx_reg = rgctx;
2259         sig_ret = mini_get_underlying_type (sig->ret);
2260
2261         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2262
2263         if (tail) {
2264                 if (mini_type_is_vtype (sig_ret)) {
2265                         call->vret_var = cfg->vret_addr;
2266                         //g_assert_not_reached ();
2267                 }
2268         } else if (mini_type_is_vtype (sig_ret)) {
2269                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2270                 MonoInst *loada;
2271
2272                 temp->backend.is_pinvoke = sig->pinvoke;
2273
2274                 /*
2275                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2276                  * address of return value to increase optimization opportunities.
2277                  * Before vtype decomposition, the dreg of the call ins itself represents the
2278                  * fact the call modifies the return value. After decomposition, the call will
2279                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2280                  * will be transformed into an LDADDR.
2281                  */
2282                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2283                 loada->dreg = alloc_preg (cfg);
2284                 loada->inst_p0 = temp;
2285                 /* We reference the call too since call->dreg could change during optimization */
2286                 loada->inst_p1 = call;
2287                 MONO_ADD_INS (cfg->cbb, loada);
2288
2289                 call->inst.dreg = temp->dreg;
2290
2291                 call->vret_var = loada;
2292         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2293                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2294
2295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2296         if (COMPILE_SOFT_FLOAT (cfg)) {
2297                 /*
2298                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2299                  * an icall, but that cannot be done during the call sequence since it would clobber
2300                  * the call registers + the stack. So we do it before emitting the call.
2301                  */
2302                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2303                         MonoType *t;
2304                         MonoInst *in = call->args [i];
2305
2306                         if (i >= sig->hasthis)
2307                                 t = sig->params [i - sig->hasthis];
2308                         else
2309                                 t = &mono_defaults.int_class->byval_arg;
2310                         t = mono_type_get_underlying_type (t);
2311
2312                         if (!t->byref && t->type == MONO_TYPE_R4) {
2313                                 MonoInst *iargs [1];
2314                                 MonoInst *conv;
2315
2316                                 iargs [0] = in;
2317                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2318
2319                                 /* The result will be in an int vreg */
2320                                 call->args [i] = conv;
2321                         }
2322                 }
2323         }
2324 #endif
2325
2326         call->need_unbox_trampoline = unbox_trampoline;
2327
2328 #ifdef ENABLE_LLVM
2329         if (COMPILE_LLVM (cfg))
2330                 mono_llvm_emit_call (cfg, call);
2331         else
2332                 mono_arch_emit_call (cfg, call);
2333 #else
2334         mono_arch_emit_call (cfg, call);
2335 #endif
2336
2337         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2338         cfg->flags |= MONO_CFG_HAS_CALLS;
2339
2340         return call;
2341 }
2342
2343 static void
2344 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2345 {
2346         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2347         cfg->uses_rgctx_reg = TRUE;
2348         call->rgctx_reg = TRUE;
2349 #ifdef ENABLE_LLVM
2350         call->rgctx_arg_reg = rgctx_reg;
2351 #endif
2352 }
2353
2354 MonoInst*
2355 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2356 {
2357         MonoCallInst *call;
2358         MonoInst *ins;
2359         int rgctx_reg = -1;
2360         gboolean check_sp = FALSE;
2361
2362         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2363                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2364
2365                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2366                         check_sp = TRUE;
2367         }
2368
2369         if (rgctx_arg) {
2370                 rgctx_reg = mono_alloc_preg (cfg);
2371                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2372         }
2373
2374         if (check_sp) {
2375                 if (!cfg->stack_inbalance_var)
2376                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2377
2378                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2379                 ins->dreg = cfg->stack_inbalance_var->dreg;
2380                 MONO_ADD_INS (cfg->cbb, ins);
2381         }
2382
2383         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2384
2385         call->inst.sreg1 = addr->dreg;
2386
2387         if (imt_arg)
2388                 emit_imt_argument (cfg, call, NULL, imt_arg);
2389
2390         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2391
2392         if (check_sp) {
2393                 int sp_reg;
2394
2395                 sp_reg = mono_alloc_preg (cfg);
2396
2397                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2398                 ins->dreg = sp_reg;
2399                 MONO_ADD_INS (cfg->cbb, ins);
2400
2401                 /* Restore the stack so we don't crash when throwing the exception */
2402                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2403                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2404                 MONO_ADD_INS (cfg->cbb, ins);
2405
2406                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2407                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2408         }
2409
2410         if (rgctx_arg)
2411                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2412
2413         return (MonoInst*)call;
2414 }
2415
2416 static MonoInst*
2417 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2418
2419 static MonoInst*
2420 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2421                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2422 {
2423 #ifndef DISABLE_REMOTING
2424         gboolean might_be_remote = FALSE;
2425 #endif
2426         gboolean virtual_ = this_ins != NULL;
2427         gboolean enable_for_aot = TRUE;
2428         int context_used;
2429         MonoCallInst *call;
2430         MonoInst *call_target = NULL;
2431         int rgctx_reg = 0;
2432         gboolean need_unbox_trampoline;
2433
2434         if (!sig)
2435                 sig = mono_method_signature (method);
2436
2437         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2438                 g_assert_not_reached ();
2439
2440         if (rgctx_arg) {
2441                 rgctx_reg = mono_alloc_preg (cfg);
2442                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2443         }
2444
2445         if (method->string_ctor) {
2446                 /* Create the real signature */
2447                 /* FIXME: Cache these */
2448                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2449                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2450
2451                 sig = ctor_sig;
2452         }
2453
2454         context_used = mini_method_check_context_used (cfg, method);
2455
2456 #ifndef DISABLE_REMOTING
2457         might_be_remote = this_ins && sig->hasthis &&
2458                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2459                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2460
2461         if (might_be_remote && context_used) {
2462                 MonoInst *addr;
2463
2464                 g_assert (cfg->gshared);
2465
2466                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2467
2468                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2469         }
2470 #endif
2471
2472         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2473                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2474
2475         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2476
2477         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2478
2479 #ifndef DISABLE_REMOTING
2480         if (might_be_remote)
2481                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2482         else
2483 #endif
2484                 call->method = method;
2485         call->inst.flags |= MONO_INST_HAS_METHOD;
2486         call->inst.inst_left = this_ins;
2487         call->tail_call = tail;
2488
2489         if (virtual_) {
2490                 int vtable_reg, slot_reg, this_reg;
2491                 int offset;
2492
2493                 this_reg = this_ins->dreg;
2494
2495                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2496                         MonoInst *dummy_use;
2497
2498                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2499
2500                         /* Make a call to delegate->invoke_impl */
2501                         call->inst.inst_basereg = this_reg;
2502                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2503                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2504
2505                         /* We must emit a dummy use here because the delegate trampoline will
2506                         replace the 'this' argument with the delegate target making this activation
2507                         no longer a root for the delegate.
2508                         This is an issue for delegates that target collectible code such as dynamic
2509                         methods of GC'able assemblies.
2510
2511                         For a test case look into #667921.
2512
2513                         FIXME: a dummy use is not the best way to do it as the local register allocator
2514                         will put it on a caller save register and spil it around the call.
2515                         Ideally, we would either put it on a callee save register or only do the store part.
2516                          */
2517                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2518
2519                         return (MonoInst*)call;
2520                 }
2521
2522                 if ((!cfg->compile_aot || enable_for_aot) &&
2523                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2524                          (MONO_METHOD_IS_FINAL (method) &&
2525                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2526                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2527                         /*
2528                          * the method is not virtual, we just need to ensure this is not null
2529                          * and then we can call the method directly.
2530                          */
2531 #ifndef DISABLE_REMOTING
2532                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2533                                 /*
2534                                  * The check above ensures method is not gshared, this is needed since
2535                                  * gshared methods can't have wrappers.
2536                                  */
2537                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2538                         }
2539 #endif
2540
2541                         if (!method->string_ctor)
2542                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2543
2544                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2545                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2546                         /*
2547                          * the method is virtual, but we can statically dispatch since either
2548                          * it's class or the method itself are sealed.
2549                          * But first we need to ensure it's not a null reference.
2550                          */
2551                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2552
2553                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2554                 } else if (call_target) {
2555                         vtable_reg = alloc_preg (cfg);
2556                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2557
2558                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2559                         call->inst.sreg1 = call_target->dreg;
2560                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2561                 } else {
2562                         vtable_reg = alloc_preg (cfg);
2563                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2564                         if (mono_class_is_interface (method->klass)) {
2565                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2566                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2567                                 slot_reg = vtable_reg;
2568                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2569                         } else {
2570                                 slot_reg = vtable_reg;
2571                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2572                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2573                                 if (imt_arg) {
2574                                         g_assert (mono_method_signature (method)->generic_param_count);
2575                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2576                                 }
2577                         }
2578
2579                         call->inst.sreg1 = slot_reg;
2580                         call->inst.inst_offset = offset;
2581                         call->is_virtual = TRUE;
2582                 }
2583         }
2584
2585         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2586
2587         if (rgctx_arg)
2588                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2589
2590         return (MonoInst*)call;
2591 }
2592
2593 MonoInst*
2594 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2595 {
2596         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2597 }
2598
2599 MonoInst*
2600 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2601                                            MonoInst **args)
2602 {
2603         MonoCallInst *call;
2604
2605         g_assert (sig);
2606
2607         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2608         call->fptr = func;
2609
2610         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2611
2612         return (MonoInst*)call;
2613 }
2614
2615 MonoInst*
2616 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2617 {
2618         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2619
2620         g_assert (info);
2621
2622         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2623 }
2624
2625 /*
2626  * mono_emit_abs_call:
2627  *
2628  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2629  */
2630 inline static MonoInst*
2631 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2632                                         MonoMethodSignature *sig, MonoInst **args)
2633 {
2634         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2635         MonoInst *ins;
2636
2637         /*
2638          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2639          * handle it.
2640          */
2641         if (cfg->abs_patches == NULL)
2642                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2643         g_hash_table_insert (cfg->abs_patches, ji, ji);
2644         ins = mono_emit_native_call (cfg, ji, sig, args);
2645         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2646         return ins;
2647 }
2648
2649 static MonoMethodSignature*
2650 sig_to_rgctx_sig (MonoMethodSignature *sig)
2651 {
2652         // FIXME: memory allocation
2653         MonoMethodSignature *res;
2654         int i;
2655
2656         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2657         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2658         res->param_count = sig->param_count + 1;
2659         for (i = 0; i < sig->param_count; ++i)
2660                 res->params [i] = sig->params [i];
2661         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2662         return res;
2663 }
2664
2665 /* Make an indirect call to FSIG passing an additional argument */
2666 static MonoInst*
2667 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2668 {
2669         MonoMethodSignature *csig;
2670         MonoInst *args_buf [16];
2671         MonoInst **args;
2672         int i, pindex, tmp_reg;
2673
2674         /* Make a call with an rgctx/extra arg */
2675         if (fsig->param_count + 2 < 16)
2676                 args = args_buf;
2677         else
2678                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2679         pindex = 0;
2680         if (fsig->hasthis)
2681                 args [pindex ++] = orig_args [0];
2682         for (i = 0; i < fsig->param_count; ++i)
2683                 args [pindex ++] = orig_args [fsig->hasthis + i];
2684         tmp_reg = alloc_preg (cfg);
2685         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2686         csig = sig_to_rgctx_sig (fsig);
2687         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2688 }
2689
2690 /* Emit an indirect call to the function descriptor ADDR */
2691 static MonoInst*
2692 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2693 {
2694         int addr_reg, arg_reg;
2695         MonoInst *call_target;
2696
2697         g_assert (cfg->llvm_only);
2698
2699         /*
2700          * addr points to a <addr, arg> pair, load both of them, and
2701          * make a call to addr, passing arg as an extra arg.
2702          */
2703         addr_reg = alloc_preg (cfg);
2704         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2705         arg_reg = alloc_preg (cfg);
2706         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2707
2708         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2709 }
2710
2711 static gboolean
2712 direct_icalls_enabled (MonoCompile *cfg)
2713 {
2714         return FALSE;
2715
2716         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2717 #ifdef TARGET_AMD64
2718         if (cfg->compile_llvm && !cfg->llvm_only)
2719                 return FALSE;
2720 #endif
2721         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2722                 return FALSE;
2723         return TRUE;
2724 }
2725
2726 MonoInst*
2727 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2728 {
2729         /*
2730          * Call the jit icall without a wrapper if possible.
2731          * The wrapper is needed for the following reasons:
2732          * - to handle exceptions thrown using mono_raise_exceptions () from the
2733          *   icall function. The EH code needs the lmf frame pushed by the
2734          *   wrapper to be able to unwind back to managed code.
2735          * - to be able to do stack walks for asynchronously suspended
2736          *   threads when debugging.
2737          */
2738         if (info->no_raise && direct_icalls_enabled (cfg)) {
2739                 char *name;
2740                 int costs;
2741
2742                 if (!info->wrapper_method) {
2743                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2744                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2745                         g_free (name);
2746                         mono_memory_barrier ();
2747                 }
2748
2749                 /*
2750                  * Inline the wrapper method, which is basically a call to the C icall, and
2751                  * an exception check.
2752                  */
2753                 costs = inline_method (cfg, info->wrapper_method, NULL,
2754                                                            args, NULL, il_offset, TRUE);
2755                 g_assert (costs > 0);
2756                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2757
2758                 return args [0];
2759         } else {
2760                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2761         }
2762 }
2763
2764 static MonoInst*
2765 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2766 {
2767         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2768                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2769                         int widen_op = -1;
2770
2771                         /*
2772                          * Native code might return non register sized integers
2773                          * without initializing the upper bits.
2774                          */
2775                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2776                         case OP_LOADI1_MEMBASE:
2777                                 widen_op = OP_ICONV_TO_I1;
2778                                 break;
2779                         case OP_LOADU1_MEMBASE:
2780                                 widen_op = OP_ICONV_TO_U1;
2781                                 break;
2782                         case OP_LOADI2_MEMBASE:
2783                                 widen_op = OP_ICONV_TO_I2;
2784                                 break;
2785                         case OP_LOADU2_MEMBASE:
2786                                 widen_op = OP_ICONV_TO_U2;
2787                                 break;
2788                         default:
2789                                 break;
2790                         }
2791
2792                         if (widen_op != -1) {
2793                                 int dreg = alloc_preg (cfg);
2794                                 MonoInst *widen;
2795
2796                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2797                                 widen->type = ins->type;
2798                                 ins = widen;
2799                         }
2800                 }
2801         }
2802
2803         return ins;
2804 }
2805
2806
2807 static void
2808 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2809 {
2810         MonoInst *args [16];
2811
2812         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2813         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2814
2815         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2816 }
2817
2818 MonoMethod*
2819 mini_get_memcpy_method (void)
2820 {
2821         static MonoMethod *memcpy_method = NULL;
2822         if (!memcpy_method) {
2823                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2824                 if (!memcpy_method)
2825                         g_error ("Old corlib found. Install a new one");
2826         }
2827         return memcpy_method;
2828 }
2829
2830 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 *t = mini_get_underlying_type (ctx->method_inst->type_argv [0]);
5059                         MonoClass *klass = mono_class_from_mono_type (t);
5060
5061                         ins = NULL;
5062
5063                         mono_class_init (klass);
5064                         if (MONO_TYPE_IS_REFERENCE (t))
5065                                 EMIT_NEW_ICONST (cfg, ins, 1);
5066                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5067                                 EMIT_NEW_ICONST (cfg, ins, 0);
5068                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5069                                 EMIT_NEW_ICONST (cfg, ins, 1);
5070                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5071                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5072                         else {
5073                                 g_assert (cfg->gshared);
5074
5075                                 int context_used = mini_class_check_context_used (cfg, klass);
5076
5077                                 /* This returns 1 or 2 */
5078                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, klass,   MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5079                                 int dreg = alloc_ireg (cfg);
5080                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5081                         }
5082
5083                         return ins;
5084                 } else
5085                         return NULL;
5086         } else if (cmethod->klass == mono_defaults.monitor_class) {
5087                 gboolean is_enter = FALSE;
5088                 gboolean is_v4 = FALSE;
5089
5090                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5091                         is_enter = TRUE;
5092                         is_v4 = TRUE;
5093                 }
5094                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5095                         is_enter = TRUE;
5096
5097                 if (is_enter) {
5098                         /*
5099                          * To make async stack traces work, icalls which can block should have a wrapper.
5100                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5101                          */
5102                         MonoBasicBlock *end_bb;
5103
5104                         NEW_BBLOCK (cfg, end_bb);
5105
5106                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5107                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5108                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5109                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5110                         MONO_START_BB (cfg, end_bb);
5111                         return ins;
5112                 }
5113         } else if (cmethod->klass == mono_defaults.thread_class) {
5114                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5115                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5116                         MONO_ADD_INS (cfg->cbb, ins);
5117                         return ins;
5118                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5119                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5120                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5121                         guint32 opcode = 0;
5122                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5123
5124                         if (fsig->params [0]->type == MONO_TYPE_I1)
5125                                 opcode = OP_LOADI1_MEMBASE;
5126                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5127                                 opcode = OP_LOADU1_MEMBASE;
5128                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5129                                 opcode = OP_LOADI2_MEMBASE;
5130                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5131                                 opcode = OP_LOADU2_MEMBASE;
5132                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5133                                 opcode = OP_LOADI4_MEMBASE;
5134                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5135                                 opcode = OP_LOADU4_MEMBASE;
5136                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5137                                 opcode = OP_LOADI8_MEMBASE;
5138                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5139                                 opcode = OP_LOADR4_MEMBASE;
5140                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5141                                 opcode = OP_LOADR8_MEMBASE;
5142                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5143                                 opcode = OP_LOAD_MEMBASE;
5144
5145                         if (opcode) {
5146                                 MONO_INST_NEW (cfg, ins, opcode);
5147                                 ins->inst_basereg = args [0]->dreg;
5148                                 ins->inst_offset = 0;
5149                                 MONO_ADD_INS (cfg->cbb, ins);
5150
5151                                 switch (fsig->params [0]->type) {
5152                                 case MONO_TYPE_I1:
5153                                 case MONO_TYPE_U1:
5154                                 case MONO_TYPE_I2:
5155                                 case MONO_TYPE_U2:
5156                                 case MONO_TYPE_I4:
5157                                 case MONO_TYPE_U4:
5158                                         ins->dreg = mono_alloc_ireg (cfg);
5159                                         ins->type = STACK_I4;
5160                                         break;
5161                                 case MONO_TYPE_I8:
5162                                 case MONO_TYPE_U8:
5163                                         ins->dreg = mono_alloc_lreg (cfg);
5164                                         ins->type = STACK_I8;
5165                                         break;
5166                                 case MONO_TYPE_I:
5167                                 case MONO_TYPE_U:
5168                                         ins->dreg = mono_alloc_ireg (cfg);
5169 #if SIZEOF_REGISTER == 8
5170                                         ins->type = STACK_I8;
5171 #else
5172                                         ins->type = STACK_I4;
5173 #endif
5174                                         break;
5175                                 case MONO_TYPE_R4:
5176                                 case MONO_TYPE_R8:
5177                                         ins->dreg = mono_alloc_freg (cfg);
5178                                         ins->type = STACK_R8;
5179                                         break;
5180                                 default:
5181                                         g_assert (mini_type_is_reference (fsig->params [0]));
5182                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5183                                         ins->type = STACK_OBJ;
5184                                         break;
5185                                 }
5186
5187                                 if (opcode == OP_LOADI8_MEMBASE)
5188                                         ins = mono_decompose_opcode (cfg, ins);
5189
5190                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5191
5192                                 return ins;
5193                         }
5194                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5195                         guint32 opcode = 0;
5196                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5197
5198                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5199                                 opcode = OP_STOREI1_MEMBASE_REG;
5200                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5201                                 opcode = OP_STOREI2_MEMBASE_REG;
5202                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5203                                 opcode = OP_STOREI4_MEMBASE_REG;
5204                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5205                                 opcode = OP_STOREI8_MEMBASE_REG;
5206                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5207                                 opcode = OP_STORER4_MEMBASE_REG;
5208                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5209                                 opcode = OP_STORER8_MEMBASE_REG;
5210                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5211                                 opcode = OP_STORE_MEMBASE_REG;
5212
5213                         if (opcode) {
5214                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5215
5216                                 MONO_INST_NEW (cfg, ins, opcode);
5217                                 ins->sreg1 = args [1]->dreg;
5218                                 ins->inst_destbasereg = args [0]->dreg;
5219                                 ins->inst_offset = 0;
5220                                 MONO_ADD_INS (cfg->cbb, ins);
5221
5222                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5223                                         ins = mono_decompose_opcode (cfg, ins);
5224
5225                                 return ins;
5226                         }
5227                 }
5228         } else if (cmethod->klass->image == mono_defaults.corlib &&
5229                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5230                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5231                 ins = NULL;
5232
5233 #if SIZEOF_REGISTER == 8
5234                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5235                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5236                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5237                                 ins->dreg = mono_alloc_preg (cfg);
5238                                 ins->sreg1 = args [0]->dreg;
5239                                 ins->type = STACK_I8;
5240                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5241                                 MONO_ADD_INS (cfg->cbb, ins);
5242                         } else {
5243                                 MonoInst *load_ins;
5244
5245                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5246
5247                                 /* 64 bit reads are already atomic */
5248                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5249                                 load_ins->dreg = mono_alloc_preg (cfg);
5250                                 load_ins->inst_basereg = args [0]->dreg;
5251                                 load_ins->inst_offset = 0;
5252                                 load_ins->type = STACK_I8;
5253                                 MONO_ADD_INS (cfg->cbb, load_ins);
5254
5255                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5256
5257                                 ins = load_ins;
5258                         }
5259                 }
5260 #endif
5261
5262                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5263                         MonoInst *ins_iconst;
5264                         guint32 opcode = 0;
5265
5266                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5267                                 opcode = OP_ATOMIC_ADD_I4;
5268                                 cfg->has_atomic_add_i4 = TRUE;
5269                         }
5270 #if SIZEOF_REGISTER == 8
5271                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5272                                 opcode = OP_ATOMIC_ADD_I8;
5273 #endif
5274                         if (opcode) {
5275                                 if (!mono_arch_opcode_supported (opcode))
5276                                         return NULL;
5277                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5278                                 ins_iconst->inst_c0 = 1;
5279                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5280                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5281
5282                                 MONO_INST_NEW (cfg, ins, opcode);
5283                                 ins->dreg = mono_alloc_ireg (cfg);
5284                                 ins->inst_basereg = args [0]->dreg;
5285                                 ins->inst_offset = 0;
5286                                 ins->sreg2 = ins_iconst->dreg;
5287                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5288                                 MONO_ADD_INS (cfg->cbb, ins);
5289                         }
5290                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5291                         MonoInst *ins_iconst;
5292                         guint32 opcode = 0;
5293
5294                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5295                                 opcode = OP_ATOMIC_ADD_I4;
5296                                 cfg->has_atomic_add_i4 = TRUE;
5297                         }
5298 #if SIZEOF_REGISTER == 8
5299                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5300                                 opcode = OP_ATOMIC_ADD_I8;
5301 #endif
5302                         if (opcode) {
5303                                 if (!mono_arch_opcode_supported (opcode))
5304                                         return NULL;
5305                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5306                                 ins_iconst->inst_c0 = -1;
5307                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5308                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5309
5310                                 MONO_INST_NEW (cfg, ins, opcode);
5311                                 ins->dreg = mono_alloc_ireg (cfg);
5312                                 ins->inst_basereg = args [0]->dreg;
5313                                 ins->inst_offset = 0;
5314                                 ins->sreg2 = ins_iconst->dreg;
5315                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5316                                 MONO_ADD_INS (cfg->cbb, ins);
5317                         }
5318                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5319                         guint32 opcode = 0;
5320
5321                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5322                                 opcode = OP_ATOMIC_ADD_I4;
5323                                 cfg->has_atomic_add_i4 = TRUE;
5324                         }
5325 #if SIZEOF_REGISTER == 8
5326                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5327                                 opcode = OP_ATOMIC_ADD_I8;
5328 #endif
5329                         if (opcode) {
5330                                 if (!mono_arch_opcode_supported (opcode))
5331                                         return NULL;
5332                                 MONO_INST_NEW (cfg, ins, opcode);
5333                                 ins->dreg = mono_alloc_ireg (cfg);
5334                                 ins->inst_basereg = args [0]->dreg;
5335                                 ins->inst_offset = 0;
5336                                 ins->sreg2 = args [1]->dreg;
5337                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5338                                 MONO_ADD_INS (cfg->cbb, ins);
5339                         }
5340                 }
5341                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5342                         MonoInst *f2i = NULL, *i2f;
5343                         guint32 opcode, f2i_opcode, i2f_opcode;
5344                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5345                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5346
5347                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5348                             fsig->params [0]->type == MONO_TYPE_R4) {
5349                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5350                                 f2i_opcode = OP_MOVE_F_TO_I4;
5351                                 i2f_opcode = OP_MOVE_I4_TO_F;
5352                                 cfg->has_atomic_exchange_i4 = TRUE;
5353                         }
5354 #if SIZEOF_REGISTER == 8
5355                         else if (is_ref ||
5356                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5357                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5358                                  fsig->params [0]->type == MONO_TYPE_I) {
5359                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5360                                 f2i_opcode = OP_MOVE_F_TO_I8;
5361                                 i2f_opcode = OP_MOVE_I8_TO_F;
5362                         }
5363 #else
5364                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5365                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5366                                 cfg->has_atomic_exchange_i4 = TRUE;
5367                         }
5368 #endif
5369                         else
5370                                 return NULL;
5371
5372                         if (!mono_arch_opcode_supported (opcode))
5373                                 return NULL;
5374
5375                         if (is_float) {
5376                                 /* TODO: Decompose these opcodes instead of bailing here. */
5377                                 if (COMPILE_SOFT_FLOAT (cfg))
5378                                         return NULL;
5379
5380                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5381                                 f2i->dreg = mono_alloc_ireg (cfg);
5382                                 f2i->sreg1 = args [1]->dreg;
5383                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5384                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5385                                 MONO_ADD_INS (cfg->cbb, f2i);
5386                         }
5387
5388                         MONO_INST_NEW (cfg, ins, opcode);
5389                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5390                         ins->inst_basereg = args [0]->dreg;
5391                         ins->inst_offset = 0;
5392                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5393                         MONO_ADD_INS (cfg->cbb, ins);
5394
5395                         switch (fsig->params [0]->type) {
5396                         case MONO_TYPE_I4:
5397                                 ins->type = STACK_I4;
5398                                 break;
5399                         case MONO_TYPE_I8:
5400                                 ins->type = STACK_I8;
5401                                 break;
5402                         case MONO_TYPE_I:
5403 #if SIZEOF_REGISTER == 8
5404                                 ins->type = STACK_I8;
5405 #else
5406                                 ins->type = STACK_I4;
5407 #endif
5408                                 break;
5409                         case MONO_TYPE_R4:
5410                         case MONO_TYPE_R8:
5411                                 ins->type = STACK_R8;
5412                                 break;
5413                         default:
5414                                 g_assert (mini_type_is_reference (fsig->params [0]));
5415                                 ins->type = STACK_OBJ;
5416                                 break;
5417                         }
5418
5419                         if (is_float) {
5420                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5421                                 i2f->dreg = mono_alloc_freg (cfg);
5422                                 i2f->sreg1 = ins->dreg;
5423                                 i2f->type = STACK_R8;
5424                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5425                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5426                                 MONO_ADD_INS (cfg->cbb, i2f);
5427
5428                                 ins = i2f;
5429                         }
5430
5431                         if (cfg->gen_write_barriers && is_ref)
5432                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5433                 }
5434                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5435                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5436                         guint32 opcode, f2i_opcode, i2f_opcode;
5437                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5438                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5439
5440                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5441                             fsig->params [1]->type == MONO_TYPE_R4) {
5442                                 opcode = OP_ATOMIC_CAS_I4;
5443                                 f2i_opcode = OP_MOVE_F_TO_I4;
5444                                 i2f_opcode = OP_MOVE_I4_TO_F;
5445                                 cfg->has_atomic_cas_i4 = TRUE;
5446                         }
5447 #if SIZEOF_REGISTER == 8
5448                         else if (is_ref ||
5449                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5450                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5451                                  fsig->params [1]->type == MONO_TYPE_I) {
5452                                 opcode = OP_ATOMIC_CAS_I8;
5453                                 f2i_opcode = OP_MOVE_F_TO_I8;
5454                                 i2f_opcode = OP_MOVE_I8_TO_F;
5455                         }
5456 #else
5457                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5458                                 opcode = OP_ATOMIC_CAS_I4;
5459                                 cfg->has_atomic_cas_i4 = TRUE;
5460                         }
5461 #endif
5462                         else
5463                                 return NULL;
5464
5465                         if (!mono_arch_opcode_supported (opcode))
5466                                 return NULL;
5467
5468                         if (is_float) {
5469                                 /* TODO: Decompose these opcodes instead of bailing here. */
5470                                 if (COMPILE_SOFT_FLOAT (cfg))
5471                                         return NULL;
5472
5473                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5474                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5475                                 f2i_new->sreg1 = args [1]->dreg;
5476                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5477                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5478                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5479
5480                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5481                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5482                                 f2i_cmp->sreg1 = args [2]->dreg;
5483                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5484                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5485                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5486                         }
5487
5488                         MONO_INST_NEW (cfg, ins, opcode);
5489                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5490                         ins->sreg1 = args [0]->dreg;
5491                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5492                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5493                         MONO_ADD_INS (cfg->cbb, ins);
5494
5495                         switch (fsig->params [1]->type) {
5496                         case MONO_TYPE_I4:
5497                                 ins->type = STACK_I4;
5498                                 break;
5499                         case MONO_TYPE_I8:
5500                                 ins->type = STACK_I8;
5501                                 break;
5502                         case MONO_TYPE_I:
5503 #if SIZEOF_REGISTER == 8
5504                                 ins->type = STACK_I8;
5505 #else
5506                                 ins->type = STACK_I4;
5507 #endif
5508                                 break;
5509                         case MONO_TYPE_R4:
5510                                 ins->type = cfg->r4_stack_type;
5511                                 break;
5512                         case MONO_TYPE_R8:
5513                                 ins->type = STACK_R8;
5514                                 break;
5515                         default:
5516                                 g_assert (mini_type_is_reference (fsig->params [1]));
5517                                 ins->type = STACK_OBJ;
5518                                 break;
5519                         }
5520
5521                         if (is_float) {
5522                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5523                                 i2f->dreg = mono_alloc_freg (cfg);
5524                                 i2f->sreg1 = ins->dreg;
5525                                 i2f->type = STACK_R8;
5526                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5527                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5528                                 MONO_ADD_INS (cfg->cbb, i2f);
5529
5530                                 ins = i2f;
5531                         }
5532
5533                         if (cfg->gen_write_barriers && is_ref)
5534                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5535                 }
5536                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5537                          fsig->params [1]->type == MONO_TYPE_I4) {
5538                         MonoInst *cmp, *ceq;
5539
5540                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5541                                 return NULL;
5542
5543                         /* int32 r = CAS (location, value, comparand); */
5544                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5545                         ins->dreg = alloc_ireg (cfg);
5546                         ins->sreg1 = args [0]->dreg;
5547                         ins->sreg2 = args [1]->dreg;
5548                         ins->sreg3 = args [2]->dreg;
5549                         ins->type = STACK_I4;
5550                         MONO_ADD_INS (cfg->cbb, ins);
5551
5552                         /* bool result = r == comparand; */
5553                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5554                         cmp->sreg1 = ins->dreg;
5555                         cmp->sreg2 = args [2]->dreg;
5556                         cmp->type = STACK_I4;
5557                         MONO_ADD_INS (cfg->cbb, cmp);
5558
5559                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5560                         ceq->dreg = alloc_ireg (cfg);
5561                         ceq->type = STACK_I4;
5562                         MONO_ADD_INS (cfg->cbb, ceq);
5563
5564                         /* *success = result; */
5565                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5566
5567                         cfg->has_atomic_cas_i4 = TRUE;
5568                 }
5569                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5570                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5571
5572                 if (ins)
5573                         return ins;
5574         } else if (cmethod->klass->image == mono_defaults.corlib &&
5575                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5576                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5577                 ins = NULL;
5578
5579                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5580                         guint32 opcode = 0;
5581                         MonoType *t = fsig->params [0];
5582                         gboolean is_ref;
5583                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5584
5585                         g_assert (t->byref);
5586                         /* t is a byref type, so the reference check is more complicated */
5587                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5588                         if (t->type == MONO_TYPE_I1)
5589                                 opcode = OP_ATOMIC_LOAD_I1;
5590                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5591                                 opcode = OP_ATOMIC_LOAD_U1;
5592                         else if (t->type == MONO_TYPE_I2)
5593                                 opcode = OP_ATOMIC_LOAD_I2;
5594                         else if (t->type == MONO_TYPE_U2)
5595                                 opcode = OP_ATOMIC_LOAD_U2;
5596                         else if (t->type == MONO_TYPE_I4)
5597                                 opcode = OP_ATOMIC_LOAD_I4;
5598                         else if (t->type == MONO_TYPE_U4)
5599                                 opcode = OP_ATOMIC_LOAD_U4;
5600                         else if (t->type == MONO_TYPE_R4)
5601                                 opcode = OP_ATOMIC_LOAD_R4;
5602                         else if (t->type == MONO_TYPE_R8)
5603                                 opcode = OP_ATOMIC_LOAD_R8;
5604 #if SIZEOF_REGISTER == 8
5605                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5606                                 opcode = OP_ATOMIC_LOAD_I8;
5607                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5608                                 opcode = OP_ATOMIC_LOAD_U8;
5609 #else
5610                         else if (t->type == MONO_TYPE_I)
5611                                 opcode = OP_ATOMIC_LOAD_I4;
5612                         else if (is_ref || t->type == MONO_TYPE_U)
5613                                 opcode = OP_ATOMIC_LOAD_U4;
5614 #endif
5615
5616                         if (opcode) {
5617                                 if (!mono_arch_opcode_supported (opcode))
5618                                         return NULL;
5619
5620                                 MONO_INST_NEW (cfg, ins, opcode);
5621                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5622                                 ins->sreg1 = args [0]->dreg;
5623                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5624                                 MONO_ADD_INS (cfg->cbb, ins);
5625
5626                                 switch (t->type) {
5627                                 case MONO_TYPE_BOOLEAN:
5628                                 case MONO_TYPE_I1:
5629                                 case MONO_TYPE_U1:
5630                                 case MONO_TYPE_I2:
5631                                 case MONO_TYPE_U2:
5632                                 case MONO_TYPE_I4:
5633                                 case MONO_TYPE_U4:
5634                                         ins->type = STACK_I4;
5635                                         break;
5636                                 case MONO_TYPE_I8:
5637                                 case MONO_TYPE_U8:
5638                                         ins->type = STACK_I8;
5639                                         break;
5640                                 case MONO_TYPE_I:
5641                                 case MONO_TYPE_U:
5642 #if SIZEOF_REGISTER == 8
5643                                         ins->type = STACK_I8;
5644 #else
5645                                         ins->type = STACK_I4;
5646 #endif
5647                                         break;
5648                                 case MONO_TYPE_R4:
5649                                         ins->type = cfg->r4_stack_type;
5650                                         break;
5651                                 case MONO_TYPE_R8:
5652                                         ins->type = STACK_R8;
5653                                         break;
5654                                 default:
5655                                         g_assert (is_ref);
5656                                         ins->type = STACK_OBJ;
5657                                         break;
5658                                 }
5659                         }
5660                 }
5661
5662                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5663                         guint32 opcode = 0;
5664                         MonoType *t = fsig->params [0];
5665                         gboolean is_ref;
5666
5667                         g_assert (t->byref);
5668                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5669                         if (t->type == MONO_TYPE_I1)
5670                                 opcode = OP_ATOMIC_STORE_I1;
5671                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5672                                 opcode = OP_ATOMIC_STORE_U1;
5673                         else if (t->type == MONO_TYPE_I2)
5674                                 opcode = OP_ATOMIC_STORE_I2;
5675                         else if (t->type == MONO_TYPE_U2)
5676                                 opcode = OP_ATOMIC_STORE_U2;
5677                         else if (t->type == MONO_TYPE_I4)
5678                                 opcode = OP_ATOMIC_STORE_I4;
5679                         else if (t->type == MONO_TYPE_U4)
5680                                 opcode = OP_ATOMIC_STORE_U4;
5681                         else if (t->type == MONO_TYPE_R4)
5682                                 opcode = OP_ATOMIC_STORE_R4;
5683                         else if (t->type == MONO_TYPE_R8)
5684                                 opcode = OP_ATOMIC_STORE_R8;
5685 #if SIZEOF_REGISTER == 8
5686                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5687                                 opcode = OP_ATOMIC_STORE_I8;
5688                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5689                                 opcode = OP_ATOMIC_STORE_U8;
5690 #else
5691                         else if (t->type == MONO_TYPE_I)
5692                                 opcode = OP_ATOMIC_STORE_I4;
5693                         else if (is_ref || t->type == MONO_TYPE_U)
5694                                 opcode = OP_ATOMIC_STORE_U4;
5695 #endif
5696
5697                         if (opcode) {
5698                                 if (!mono_arch_opcode_supported (opcode))
5699                                         return NULL;
5700
5701                                 MONO_INST_NEW (cfg, ins, opcode);
5702                                 ins->dreg = args [0]->dreg;
5703                                 ins->sreg1 = args [1]->dreg;
5704                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5705                                 MONO_ADD_INS (cfg->cbb, ins);
5706
5707                                 if (cfg->gen_write_barriers && is_ref)
5708                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5709                         }
5710                 }
5711
5712                 if (ins)
5713                         return ins;
5714         } else if (cmethod->klass->image == mono_defaults.corlib &&
5715                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5716                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5717                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5718                         if (mini_should_insert_breakpoint (cfg->method)) {
5719                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5720                         } else {
5721                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5722                                 MONO_ADD_INS (cfg->cbb, ins);
5723                         }
5724                         return ins;
5725                 }
5726         } else if (cmethod->klass->image == mono_defaults.corlib &&
5727                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5728                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5729                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5730 #ifdef TARGET_WIN32
5731                         EMIT_NEW_ICONST (cfg, ins, 1);
5732 #else
5733                         EMIT_NEW_ICONST (cfg, ins, 0);
5734 #endif
5735                 }
5736         } else if (cmethod->klass->image == mono_defaults.corlib &&
5737                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5738                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5739                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5740                         /* No stack walks are currently available, so implement this as an intrinsic */
5741                         MonoInst *assembly_ins;
5742
5743                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5744                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5745                         return ins;
5746                 }
5747         } else if (cmethod->klass->image == mono_defaults.corlib &&
5748                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5749                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5750                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5751                         /* No stack walks are currently available, so implement this as an intrinsic */
5752                         MonoInst *method_ins;
5753                         MonoMethod *declaring = cfg->method;
5754
5755                         /* This returns the declaring generic method */
5756                         if (declaring->is_inflated)
5757                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5758                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5759                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5760                         cfg->no_inline = TRUE;
5761                         if (cfg->method != cfg->current_method)
5762                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5763                         return ins;
5764                 }
5765         } else if (cmethod->klass == mono_defaults.math_class) {
5766                 /*
5767                  * There is general branchless code for Min/Max, but it does not work for
5768                  * all inputs:
5769                  * http://everything2.com/?node_id=1051618
5770                  */
5771         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5772                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5773                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5774                 ins->dreg = alloc_preg (cfg);
5775                 ins->type = STACK_I4;
5776                 MONO_ADD_INS (cfg->cbb, ins);
5777                 return ins;
5778         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5779                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5780                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5781                                 !strcmp (cmethod->klass->name, "Selector")) ||
5782                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5783                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5784                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5785                                 !strcmp (cmethod->klass->name, "Selector"))
5786                            ) {
5787                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5788                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5789                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5790                     cfg->compile_aot) {
5791                         MonoInst *pi;
5792                         MonoJumpInfoToken *ji;
5793                         char *s;
5794
5795                         if (args [0]->opcode == OP_GOT_ENTRY) {
5796                                 pi = (MonoInst *)args [0]->inst_p1;
5797                                 g_assert (pi->opcode == OP_PATCH_INFO);
5798                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5799                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5800                         } else {
5801                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5802                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5803                         }
5804
5805                         NULLIFY_INS (args [0]);
5806
5807                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5808                         return_val_if_nok (&cfg->error, NULL);
5809
5810                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5811                         ins->dreg = mono_alloc_ireg (cfg);
5812                         // FIXME: Leaks
5813                         ins->inst_p0 = s;
5814                         MONO_ADD_INS (cfg->cbb, ins);
5815                         return ins;
5816                 }
5817         } else if (cmethod->klass->image == mono_defaults.corlib &&
5818                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5819                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5820                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5821                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5822                                 cmethod->is_inflated &&
5823                                 fsig->param_count == 1 &&
5824                                 !mini_method_check_context_used (cfg, cmethod)) {
5825
5826                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5827                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5828                         if (mono_type_is_native_blittable (arg0))
5829                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5830                 }
5831         }
5832
5833 #ifdef MONO_ARCH_SIMD_INTRINSICS
5834         if (cfg->opt & MONO_OPT_SIMD) {
5835                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5836                 if (ins)
5837                         return ins;
5838         }
5839 #endif
5840
5841         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5842         if (ins)
5843                 return ins;
5844
5845         if (COMPILE_LLVM (cfg)) {
5846                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5847                 if (ins)
5848                         return ins;
5849         }
5850
5851         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5852 }
5853
5854 /*
5855  * This entry point could be used later for arbitrary method
5856  * redirection.
5857  */
5858 inline static MonoInst*
5859 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5860                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5861 {
5862         if (method->klass == mono_defaults.string_class) {
5863                 /* managed string allocation support */
5864                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
5865                         MonoInst *iargs [2];
5866                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5867                         MonoMethod *managed_alloc = NULL;
5868
5869                         g_assert (vtable); /*Should not fail since it System.String*/
5870 #ifndef MONO_CROSS_COMPILE
5871                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5872 #endif
5873                         if (!managed_alloc)
5874                                 return NULL;
5875                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5876                         iargs [1] = args [0];
5877                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5878                 }
5879         }
5880         return NULL;
5881 }
5882
5883 static void
5884 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5885 {
5886         MonoInst *store, *temp;
5887         int i;
5888
5889         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5890                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5891
5892                 /*
5893                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5894                  * would be different than the MonoInst's used to represent arguments, and
5895                  * the ldelema implementation can't deal with that.
5896                  * Solution: When ldelema is used on an inline argument, create a var for
5897                  * it, emit ldelema on that var, and emit the saving code below in
5898                  * inline_method () if needed.
5899                  */
5900                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5901                 cfg->args [i] = temp;
5902                 /* This uses cfg->args [i] which is set by the preceeding line */
5903                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5904                 store->cil_code = sp [0]->cil_code;
5905                 sp++;
5906         }
5907 }
5908
5909 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5910 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5911
5912 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5913 static gboolean
5914 check_inline_called_method_name_limit (MonoMethod *called_method)
5915 {
5916         int strncmp_result;
5917         static const char *limit = NULL;
5918
5919         if (limit == NULL) {
5920                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5921
5922                 if (limit_string != NULL)
5923                         limit = limit_string;
5924                 else
5925                         limit = "";
5926         }
5927
5928         if (limit [0] != '\0') {
5929                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5930
5931                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5932                 g_free (called_method_name);
5933
5934                 //return (strncmp_result <= 0);
5935                 return (strncmp_result == 0);
5936         } else {
5937                 return TRUE;
5938         }
5939 }
5940 #endif
5941
5942 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5943 static gboolean
5944 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5945 {
5946         int strncmp_result;
5947         static const char *limit = NULL;
5948
5949         if (limit == NULL) {
5950                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5951                 if (limit_string != NULL) {
5952                         limit = limit_string;
5953                 } else {
5954                         limit = "";
5955                 }
5956         }
5957
5958         if (limit [0] != '\0') {
5959                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5960
5961                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5962                 g_free (caller_method_name);
5963
5964                 //return (strncmp_result <= 0);
5965                 return (strncmp_result == 0);
5966         } else {
5967                 return TRUE;
5968         }
5969 }
5970 #endif
5971
5972 static void
5973 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5974 {
5975         static double r8_0 = 0.0;
5976         static float r4_0 = 0.0;
5977         MonoInst *ins;
5978         int t;
5979
5980         rtype = mini_get_underlying_type (rtype);
5981         t = rtype->type;
5982
5983         if (rtype->byref) {
5984                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5985         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5986                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5987         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5988                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5989         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5990                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5991                 ins->type = STACK_R4;
5992                 ins->inst_p0 = (void*)&r4_0;
5993                 ins->dreg = dreg;
5994                 MONO_ADD_INS (cfg->cbb, ins);
5995         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
5996                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5997                 ins->type = STACK_R8;
5998                 ins->inst_p0 = (void*)&r8_0;
5999                 ins->dreg = dreg;
6000                 MONO_ADD_INS (cfg->cbb, ins);
6001         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6002                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6003                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6004         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6005                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6006         } else {
6007                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6008         }
6009 }
6010
6011 static void
6012 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6013 {
6014         int t;
6015
6016         rtype = mini_get_underlying_type (rtype);
6017         t = rtype->type;
6018
6019         if (rtype->byref) {
6020                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6021         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6022                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6023         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6024                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6025         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6027         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6029         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6030                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6032         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6034         } else {
6035                 emit_init_rvar (cfg, dreg, rtype);
6036         }
6037 }
6038
6039 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6040 static void
6041 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6042 {
6043         MonoInst *var = cfg->locals [local];
6044         if (COMPILE_SOFT_FLOAT (cfg)) {
6045                 MonoInst *store;
6046                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6047                 emit_init_rvar (cfg, reg, type);
6048                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6049         } else {
6050                 if (init)
6051                         emit_init_rvar (cfg, var->dreg, type);
6052                 else
6053                         emit_dummy_init_rvar (cfg, var->dreg, type);
6054         }
6055 }
6056
6057 int
6058 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6059 {
6060         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6061 }
6062
6063 /*
6064  * inline_method:
6065  *
6066  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6067  */
6068 static int
6069 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6070                guchar *ip, guint real_offset, gboolean inline_always)
6071 {
6072         MonoError error;
6073         MonoInst *ins, *rvar = NULL;
6074         MonoMethodHeader *cheader;
6075         MonoBasicBlock *ebblock, *sbblock;
6076         int i, costs;
6077         MonoMethod *prev_inlined_method;
6078         MonoInst **prev_locals, **prev_args;
6079         MonoType **prev_arg_types;
6080         guint prev_real_offset;
6081         GHashTable *prev_cbb_hash;
6082         MonoBasicBlock **prev_cil_offset_to_bb;
6083         MonoBasicBlock *prev_cbb;
6084         const unsigned char *prev_ip;
6085         unsigned char *prev_cil_start;
6086         guint32 prev_cil_offset_to_bb_len;
6087         MonoMethod *prev_current_method;
6088         MonoGenericContext *prev_generic_context;
6089         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6090
6091         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6092
6093 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6094         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6095                 return 0;
6096 #endif
6097 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6098         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6099                 return 0;
6100 #endif
6101
6102         if (!fsig)
6103                 fsig = mono_method_signature (cmethod);
6104
6105         if (cfg->verbose_level > 2)
6106                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6107
6108         if (!cmethod->inline_info) {
6109                 cfg->stat_inlineable_methods++;
6110                 cmethod->inline_info = 1;
6111         }
6112
6113         /* allocate local variables */
6114         cheader = mono_method_get_header_checked (cmethod, &error);
6115         if (!cheader) {
6116                 if (inline_always) {
6117                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6118                         mono_error_move (&cfg->error, &error);
6119                 } else {
6120                         mono_error_cleanup (&error);
6121                 }
6122                 return 0;
6123         }
6124
6125         /*Must verify before creating locals as it can cause the JIT to assert.*/
6126         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6127                 mono_metadata_free_mh (cheader);
6128                 return 0;
6129         }
6130
6131         /* allocate space to store the return value */
6132         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6133                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6134         }
6135
6136         prev_locals = cfg->locals;
6137         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6138         for (i = 0; i < cheader->num_locals; ++i)
6139                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6140
6141         /* allocate start and end blocks */
6142         /* This is needed so if the inline is aborted, we can clean up */
6143         NEW_BBLOCK (cfg, sbblock);
6144         sbblock->real_offset = real_offset;
6145
6146         NEW_BBLOCK (cfg, ebblock);
6147         ebblock->block_num = cfg->num_bblocks++;
6148         ebblock->real_offset = real_offset;
6149
6150         prev_args = cfg->args;
6151         prev_arg_types = cfg->arg_types;
6152         prev_inlined_method = cfg->inlined_method;
6153         cfg->inlined_method = cmethod;
6154         cfg->ret_var_set = FALSE;
6155         cfg->inline_depth ++;
6156         prev_real_offset = cfg->real_offset;
6157         prev_cbb_hash = cfg->cbb_hash;
6158         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6159         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6160         prev_cil_start = cfg->cil_start;
6161         prev_ip = cfg->ip;
6162         prev_cbb = cfg->cbb;
6163         prev_current_method = cfg->current_method;
6164         prev_generic_context = cfg->generic_context;
6165         prev_ret_var_set = cfg->ret_var_set;
6166         prev_disable_inline = cfg->disable_inline;
6167
6168         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6169                 virtual_ = TRUE;
6170
6171         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6172
6173         ret_var_set = cfg->ret_var_set;
6174
6175         cfg->inlined_method = prev_inlined_method;
6176         cfg->real_offset = prev_real_offset;
6177         cfg->cbb_hash = prev_cbb_hash;
6178         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6179         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6180         cfg->cil_start = prev_cil_start;
6181         cfg->ip = prev_ip;
6182         cfg->locals = prev_locals;
6183         cfg->args = prev_args;
6184         cfg->arg_types = prev_arg_types;
6185         cfg->current_method = prev_current_method;
6186         cfg->generic_context = prev_generic_context;
6187         cfg->ret_var_set = prev_ret_var_set;
6188         cfg->disable_inline = prev_disable_inline;
6189         cfg->inline_depth --;
6190
6191         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6192                 if (cfg->verbose_level > 2)
6193                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6194
6195                 cfg->stat_inlined_methods++;
6196
6197                 /* always add some code to avoid block split failures */
6198                 MONO_INST_NEW (cfg, ins, OP_NOP);
6199                 MONO_ADD_INS (prev_cbb, ins);
6200
6201                 prev_cbb->next_bb = sbblock;
6202                 link_bblock (cfg, prev_cbb, sbblock);
6203
6204                 /*
6205                  * Get rid of the begin and end bblocks if possible to aid local
6206                  * optimizations.
6207                  */
6208                 if (prev_cbb->out_count == 1)
6209                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6210
6211                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6212                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6213
6214                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6215                         MonoBasicBlock *prev = ebblock->in_bb [0];
6216
6217                         if (prev->next_bb == ebblock) {
6218                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6219                                 cfg->cbb = prev;
6220                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6221                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6222                                         cfg->cbb = prev_cbb;
6223                                 }
6224                         } else {
6225                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6226                                 cfg->cbb = ebblock;
6227                         }
6228                 } else {
6229                         /*
6230                          * Its possible that the rvar is set in some prev bblock, but not in others.
6231                          * (#1835).
6232                          */
6233                         if (rvar) {
6234                                 MonoBasicBlock *bb;
6235
6236                                 for (i = 0; i < ebblock->in_count; ++i) {
6237                                         bb = ebblock->in_bb [i];
6238
6239                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6240                                                 cfg->cbb = bb;
6241
6242                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6243                                         }
6244                                 }
6245                         }
6246
6247                         cfg->cbb = ebblock;
6248                 }
6249
6250                 if (rvar) {
6251                         /*
6252                          * If the inlined method contains only a throw, then the ret var is not
6253                          * set, so set it to a dummy value.
6254                          */
6255                         if (!ret_var_set)
6256                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6257
6258                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6259                         *sp++ = ins;
6260                 }
6261                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6262                 return costs + 1;
6263         } else {
6264                 if (cfg->verbose_level > 2)
6265                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6266                 cfg->exception_type = MONO_EXCEPTION_NONE;
6267
6268                 /* This gets rid of the newly added bblocks */
6269                 cfg->cbb = prev_cbb;
6270         }
6271         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6272         return 0;
6273 }
6274
6275 /*
6276  * Some of these comments may well be out-of-date.
6277  * Design decisions: we do a single pass over the IL code (and we do bblock
6278  * splitting/merging in the few cases when it's required: a back jump to an IL
6279  * address that was not already seen as bblock starting point).
6280  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6281  * Complex operations are decomposed in simpler ones right away. We need to let the
6282  * arch-specific code peek and poke inside this process somehow (except when the
6283  * optimizations can take advantage of the full semantic info of coarse opcodes).
6284  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6285  * MonoInst->opcode initially is the IL opcode or some simplification of that
6286  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6287  * opcode with value bigger than OP_LAST.
6288  * At this point the IR can be handed over to an interpreter, a dumb code generator
6289  * or to the optimizing code generator that will translate it to SSA form.
6290  *
6291  * Profiling directed optimizations.
6292  * We may compile by default with few or no optimizations and instrument the code
6293  * or the user may indicate what methods to optimize the most either in a config file
6294  * or through repeated runs where the compiler applies offline the optimizations to
6295  * each method and then decides if it was worth it.
6296  */
6297
6298 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6299 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6300 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6301 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6302 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6303 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6304 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6305 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6306
6307 /* offset from br.s -> br like opcodes */
6308 #define BIG_BRANCH_OFFSET 13
6309
6310 static gboolean
6311 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6312 {
6313         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6314
6315         return b == NULL || b == bb;
6316 }
6317
6318 static int
6319 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6320 {
6321         unsigned char *ip = start;
6322         unsigned char *target;
6323         int i;
6324         guint cli_addr;
6325         MonoBasicBlock *bblock;
6326         const MonoOpcode *opcode;
6327
6328         while (ip < end) {
6329                 cli_addr = ip - start;
6330                 i = mono_opcode_value ((const guint8 **)&ip, end);
6331                 if (i < 0)
6332                         UNVERIFIED;
6333                 opcode = &mono_opcodes [i];
6334                 switch (opcode->argument) {
6335                 case MonoInlineNone:
6336                         ip++;
6337                         break;
6338                 case MonoInlineString:
6339                 case MonoInlineType:
6340                 case MonoInlineField:
6341                 case MonoInlineMethod:
6342                 case MonoInlineTok:
6343                 case MonoInlineSig:
6344                 case MonoShortInlineR:
6345                 case MonoInlineI:
6346                         ip += 5;
6347                         break;
6348                 case MonoInlineVar:
6349                         ip += 3;
6350                         break;
6351                 case MonoShortInlineVar:
6352                 case MonoShortInlineI:
6353                         ip += 2;
6354                         break;
6355                 case MonoShortInlineBrTarget:
6356                         target = start + cli_addr + 2 + (signed char)ip [1];
6357                         GET_BBLOCK (cfg, bblock, target);
6358                         ip += 2;
6359                         if (ip < end)
6360                                 GET_BBLOCK (cfg, bblock, ip);
6361                         break;
6362                 case MonoInlineBrTarget:
6363                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6364                         GET_BBLOCK (cfg, bblock, target);
6365                         ip += 5;
6366                         if (ip < end)
6367                                 GET_BBLOCK (cfg, bblock, ip);
6368                         break;
6369                 case MonoInlineSwitch: {
6370                         guint32 n = read32 (ip + 1);
6371                         guint32 j;
6372                         ip += 5;
6373                         cli_addr += 5 + 4 * n;
6374                         target = start + cli_addr;
6375                         GET_BBLOCK (cfg, bblock, target);
6376
6377                         for (j = 0; j < n; ++j) {
6378                                 target = start + cli_addr + (gint32)read32 (ip);
6379                                 GET_BBLOCK (cfg, bblock, target);
6380                                 ip += 4;
6381                         }
6382                         break;
6383                 }
6384                 case MonoInlineR:
6385                 case MonoInlineI8:
6386                         ip += 9;
6387                         break;
6388                 default:
6389                         g_assert_not_reached ();
6390                 }
6391
6392                 if (i == CEE_THROW) {
6393                         unsigned char *bb_start = ip - 1;
6394
6395                         /* Find the start of the bblock containing the throw */
6396                         bblock = NULL;
6397                         while ((bb_start >= start) && !bblock) {
6398                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6399                                 bb_start --;
6400                         }
6401                         if (bblock)
6402                                 bblock->out_of_line = 1;
6403                 }
6404         }
6405         return 0;
6406 unverified:
6407 exception_exit:
6408         *pos = ip;
6409         return 1;
6410 }
6411
6412 static inline MonoMethod *
6413 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6414 {
6415         MonoMethod *method;
6416
6417         error_init (error);
6418
6419         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6420                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6421                 if (context) {
6422                         method = mono_class_inflate_generic_method_checked (method, context, error);
6423                 }
6424         } else {
6425                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6426         }
6427
6428         return method;
6429 }
6430
6431 static inline MonoMethod *
6432 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6433 {
6434         MonoError error;
6435         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6436
6437         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6438                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6439                 method = NULL;
6440         }
6441
6442         if (!method && !cfg)
6443                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6444
6445         return method;
6446 }
6447
6448 static inline MonoMethodSignature*
6449 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6450 {
6451         MonoMethodSignature *fsig;
6452
6453         error_init (error);
6454         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6455                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6456         } else {
6457                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6458                 return_val_if_nok (error, NULL);
6459         }
6460         if (context) {
6461                 fsig = mono_inflate_generic_signature(fsig, context, error);
6462         }
6463         return fsig;
6464 }
6465
6466 static MonoMethod*
6467 throw_exception (void)
6468 {
6469         static MonoMethod *method = NULL;
6470
6471         if (!method) {
6472                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6473                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6474         }
6475         g_assert (method);
6476         return method;
6477 }
6478
6479 static void
6480 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6481 {
6482         MonoMethod *thrower = throw_exception ();
6483         MonoInst *args [1];
6484
6485         EMIT_NEW_PCONST (cfg, args [0], ex);
6486         mono_emit_method_call (cfg, thrower, args, NULL);
6487 }
6488
6489 /*
6490  * Return the original method is a wrapper is specified. We can only access
6491  * the custom attributes from the original method.
6492  */
6493 static MonoMethod*
6494 get_original_method (MonoMethod *method)
6495 {
6496         if (method->wrapper_type == MONO_WRAPPER_NONE)
6497                 return method;
6498
6499         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6500         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6501                 return NULL;
6502
6503         /* in other cases we need to find the original method */
6504         return mono_marshal_method_from_wrapper (method);
6505 }
6506
6507 static void
6508 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6509 {
6510         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6511         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6512         if (ex)
6513                 emit_throw_exception (cfg, ex);
6514 }
6515
6516 static void
6517 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6518 {
6519         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6520         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6521         if (ex)
6522                 emit_throw_exception (cfg, ex);
6523 }
6524
6525 /*
6526  * Check that the IL instructions at ip are the array initialization
6527  * sequence and return the pointer to the data and the size.
6528  */
6529 static const char*
6530 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6531 {
6532         /*
6533          * newarr[System.Int32]
6534          * dup
6535          * ldtoken field valuetype ...
6536          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6537          */
6538         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6539                 MonoError error;
6540                 guint32 token = read32 (ip + 7);
6541                 guint32 field_token = read32 (ip + 2);
6542                 guint32 field_index = field_token & 0xffffff;
6543                 guint32 rva;
6544                 const char *data_ptr;
6545                 int size = 0;
6546                 MonoMethod *cmethod;
6547                 MonoClass *dummy_class;
6548                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6549                 int dummy_align;
6550
6551                 if (!field) {
6552                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6553                         return NULL;
6554                 }
6555
6556                 *out_field_token = field_token;
6557
6558                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6559                 if (!cmethod)
6560                         return NULL;
6561                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6562                         return NULL;
6563                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6564                 case MONO_TYPE_I1:
6565                 case MONO_TYPE_U1:
6566                         size = 1; break;
6567                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6568 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6569                 case MONO_TYPE_I2:
6570                 case MONO_TYPE_U2:
6571                         size = 2; break;
6572                 case MONO_TYPE_I4:
6573                 case MONO_TYPE_U4:
6574                 case MONO_TYPE_R4:
6575                         size = 4; break;
6576                 case MONO_TYPE_R8:
6577                 case MONO_TYPE_I8:
6578                 case MONO_TYPE_U8:
6579                         size = 8; break;
6580 #endif
6581                 default:
6582                         return NULL;
6583                 }
6584                 size *= len;
6585                 if (size > mono_type_size (field->type, &dummy_align))
6586                     return NULL;
6587                 *out_size = size;
6588                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6589                 if (!image_is_dynamic (method->klass->image)) {
6590                         field_index = read32 (ip + 2) & 0xffffff;
6591                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6592                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6593                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6594                         /* for aot code we do the lookup on load */
6595                         if (aot && data_ptr)
6596                                 return (const char *)GUINT_TO_POINTER (rva);
6597                 } else {
6598                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6599                         g_assert (!aot);
6600                         data_ptr = mono_field_get_data (field);
6601                 }
6602                 return data_ptr;
6603         }
6604         return NULL;
6605 }
6606
6607 static void
6608 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6609 {
6610         MonoError error;
6611         char *method_fname = mono_method_full_name (method, TRUE);
6612         char *method_code;
6613         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6614
6615         if (!header) {
6616                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6617                 mono_error_cleanup (&error);
6618         } else if (header->code_size == 0)
6619                 method_code = g_strdup ("method body is empty.");
6620         else
6621                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6622         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6623         g_free (method_fname);
6624         g_free (method_code);
6625         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6626 }
6627
6628 static void
6629 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6630 {
6631         MonoInst *ins;
6632         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6633         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6634                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6635                 /* Optimize reg-reg moves away */
6636                 /*
6637                  * Can't optimize other opcodes, since sp[0] might point to
6638                  * the last ins of a decomposed opcode.
6639                  */
6640                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6641         } else {
6642                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6643         }
6644 }
6645
6646 /*
6647  * ldloca inhibits many optimizations so try to get rid of it in common
6648  * cases.
6649  */
6650 static inline unsigned char *
6651 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6652 {
6653         int local, token;
6654         MonoClass *klass;
6655         MonoType *type;
6656
6657         if (size == 1) {
6658                 local = ip [1];
6659                 ip += 2;
6660         } else {
6661                 local = read16 (ip + 2);
6662                 ip += 4;
6663         }
6664
6665         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6666                 /* From the INITOBJ case */
6667                 token = read32 (ip + 2);
6668                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6669                 CHECK_TYPELOAD (klass);
6670                 type = mini_get_underlying_type (&klass->byval_arg);
6671                 emit_init_local (cfg, local, type, TRUE);
6672                 return ip + 6;
6673         }
6674  exception_exit:
6675         return NULL;
6676 }
6677
6678 static MonoInst*
6679 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6680 {
6681         MonoInst *icall_args [16];
6682         MonoInst *call_target, *ins, *vtable_ins;
6683         int arg_reg, this_reg, vtable_reg;
6684         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6685         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6686         gboolean variant_iface = FALSE;
6687         guint32 slot;
6688         int offset;
6689         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6690
6691         /*
6692          * In llvm-only mode, vtables contain function descriptors instead of
6693          * method addresses/trampolines.
6694          */
6695         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6696
6697         if (is_iface)
6698                 slot = mono_method_get_imt_slot (cmethod);
6699         else
6700                 slot = mono_method_get_vtable_index (cmethod);
6701
6702         this_reg = sp [0]->dreg;
6703
6704         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6705                 variant_iface = TRUE;
6706
6707         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6708                 /*
6709                  * The simplest case, a normal virtual call.
6710                  */
6711                 int slot_reg = alloc_preg (cfg);
6712                 int addr_reg = alloc_preg (cfg);
6713                 int arg_reg = alloc_preg (cfg);
6714                 MonoBasicBlock *non_null_bb;
6715
6716                 vtable_reg = alloc_preg (cfg);
6717                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6718                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6719
6720                 /* Load the vtable slot, which contains a function descriptor. */
6721                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6722
6723                 NEW_BBLOCK (cfg, non_null_bb);
6724
6725                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6726                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6727                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6728
6729                 /* Slow path */
6730                 // FIXME: Make the wrapper use the preserveall cconv
6731                 // FIXME: Use one icall per slot for small slot numbers ?
6732                 icall_args [0] = vtable_ins;
6733                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6734                 /* Make the icall return the vtable slot value to save some code space */
6735                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6736                 ins->dreg = slot_reg;
6737                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6738
6739                 /* Fastpath */
6740                 MONO_START_BB (cfg, non_null_bb);
6741                 /* Load the address + arg from the vtable slot */
6742                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6743                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6744
6745                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6746         }
6747
6748         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6749                 /*
6750                  * A simple interface call
6751                  *
6752                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6753                  * The imt slot contains a function descriptor for a runtime function + arg.
6754                  */
6755                 int slot_reg = alloc_preg (cfg);
6756                 int addr_reg = alloc_preg (cfg);
6757                 int arg_reg = alloc_preg (cfg);
6758                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6759
6760                 vtable_reg = alloc_preg (cfg);
6761                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6762                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6763
6764                 /*
6765                  * The slot is already initialized when the vtable is created so there is no need
6766                  * to check it here.
6767                  */
6768
6769                 /* Load the imt slot, which contains a function descriptor. */
6770                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6771
6772                 /* Load the address + arg of the imt thunk from the imt slot */
6773                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6774                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6775                 /*
6776                  * IMT thunks in llvm-only mode are C functions which take an info argument
6777                  * plus the imt method and return the ftndesc to call.
6778                  */
6779                 icall_args [0] = thunk_arg_ins;
6780                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6781                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6782                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6783
6784                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6785         }
6786
6787         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6788                 /*
6789                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6790                  * dynamically extended as more instantiations are discovered.
6791                  * This handles generic virtual methods both on classes and interfaces.
6792                  */
6793                 int slot_reg = alloc_preg (cfg);
6794                 int addr_reg = alloc_preg (cfg);
6795                 int arg_reg = alloc_preg (cfg);
6796                 int ftndesc_reg = alloc_preg (cfg);
6797                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6798                 MonoBasicBlock *slowpath_bb, *end_bb;
6799
6800                 NEW_BBLOCK (cfg, slowpath_bb);
6801                 NEW_BBLOCK (cfg, end_bb);
6802
6803                 vtable_reg = alloc_preg (cfg);
6804                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6805                 if (is_iface)
6806                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6807                 else
6808                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6809
6810                 /* Load the slot, which contains a function descriptor. */
6811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6812
6813                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6814                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6815                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6817
6818                 /* Fastpath */
6819                 /* Same as with iface calls */
6820                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6821                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6822                 icall_args [0] = thunk_arg_ins;
6823                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6824                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6825                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6826                 ftndesc_ins->dreg = ftndesc_reg;
6827                 /*
6828                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6829                  * they don't know about yet. Fall back to the slowpath in that case.
6830                  */
6831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6833
6834                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6835
6836                 /* Slowpath */
6837                 MONO_START_BB (cfg, slowpath_bb);
6838                 icall_args [0] = vtable_ins;
6839                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6840                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6841                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6842                 if (is_iface)
6843                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6844                 else
6845                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6846                 ftndesc_ins->dreg = ftndesc_reg;
6847                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6848
6849                 /* Common case */
6850                 MONO_START_BB (cfg, end_bb);
6851                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6852         }
6853
6854         /*
6855          * Non-optimized cases
6856          */
6857         icall_args [0] = sp [0];
6858         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6859
6860         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6861                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6862
6863         arg_reg = alloc_preg (cfg);
6864         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6865         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6866
6867         g_assert (is_gsharedvt);
6868         if (is_iface)
6869                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6870         else
6871                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6872
6873         /*
6874          * Pass the extra argument even if the callee doesn't receive it, most
6875          * calling conventions allow this.
6876          */
6877         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6878 }
6879
6880 static gboolean
6881 is_exception_class (MonoClass *klass)
6882 {
6883         while (klass) {
6884                 if (klass == mono_defaults.exception_class)
6885                         return TRUE;
6886                 klass = klass->parent;
6887         }
6888         return FALSE;
6889 }
6890
6891 /*
6892  * is_jit_optimizer_disabled:
6893  *
6894  *   Determine whenever M's assembly has a DebuggableAttribute with the
6895  * IsJITOptimizerDisabled flag set.
6896  */
6897 static gboolean
6898 is_jit_optimizer_disabled (MonoMethod *m)
6899 {
6900         MonoError error;
6901         MonoAssembly *ass = m->klass->image->assembly;
6902         MonoCustomAttrInfo* attrs;
6903         MonoClass *klass;
6904         int i;
6905         gboolean val = FALSE;
6906
6907         g_assert (ass);
6908         if (ass->jit_optimizer_disabled_inited)
6909                 return ass->jit_optimizer_disabled;
6910
6911         klass = mono_class_try_get_debuggable_attribute_class ();
6912
6913         if (!klass) {
6914                 /* Linked away */
6915                 ass->jit_optimizer_disabled = FALSE;
6916                 mono_memory_barrier ();
6917                 ass->jit_optimizer_disabled_inited = TRUE;
6918                 return FALSE;
6919         }
6920
6921         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6922         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6923         if (attrs) {
6924                 for (i = 0; i < attrs->num_attrs; ++i) {
6925                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6926                         const gchar *p;
6927                         MonoMethodSignature *sig;
6928
6929                         if (!attr->ctor || attr->ctor->klass != klass)
6930                                 continue;
6931                         /* Decode the attribute. See reflection.c */
6932                         p = (const char*)attr->data;
6933                         g_assert (read16 (p) == 0x0001);
6934                         p += 2;
6935
6936                         // FIXME: Support named parameters
6937                         sig = mono_method_signature (attr->ctor);
6938                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6939                                 continue;
6940                         /* Two boolean arguments */
6941                         p ++;
6942                         val = *p;
6943                 }
6944                 mono_custom_attrs_free (attrs);
6945         }
6946
6947         ass->jit_optimizer_disabled = val;
6948         mono_memory_barrier ();
6949         ass->jit_optimizer_disabled_inited = TRUE;
6950
6951         return val;
6952 }
6953
6954 static gboolean
6955 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
6956 {
6957         gboolean supported_tail_call;
6958         int i;
6959
6960         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
6961
6962         for (i = 0; i < fsig->param_count; ++i) {
6963                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6964                         /* These can point to the current method's stack */
6965                         supported_tail_call = FALSE;
6966         }
6967         if (fsig->hasthis && cmethod->klass->valuetype)
6968                 /* this might point to the current method's stack */
6969                 supported_tail_call = FALSE;
6970         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6971                 supported_tail_call = FALSE;
6972         if (cfg->method->save_lmf)
6973                 supported_tail_call = FALSE;
6974         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6975                 supported_tail_call = FALSE;
6976         if (call_opcode != CEE_CALL)
6977                 supported_tail_call = FALSE;
6978
6979         /* Debugging support */
6980 #if 0
6981         if (supported_tail_call) {
6982                 if (!mono_debug_count ())
6983                         supported_tail_call = FALSE;
6984         }
6985 #endif
6986
6987         return supported_tail_call;
6988 }
6989
6990 /*
6991  * handle_ctor_call:
6992  *
6993  *   Handle calls made to ctors from NEWOBJ opcodes.
6994  */
6995 static void
6996 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
6997                                   MonoInst **sp, guint8 *ip, int *inline_costs)
6998 {
6999         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7000
7001         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7002                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7003                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7004                         mono_class_vtable (cfg->domain, cmethod->klass);
7005                         CHECK_TYPELOAD (cmethod->klass);
7006
7007                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7008                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7009                 } else {
7010                         if (context_used) {
7011                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7012                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7013                         } else {
7014                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7015
7016                                 CHECK_TYPELOAD (cmethod->klass);
7017                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7018                         }
7019                 }
7020         }
7021
7022         /* Avoid virtual calls to ctors if possible */
7023         if (mono_class_is_marshalbyref (cmethod->klass))
7024                 callvirt_this_arg = sp [0];
7025
7026         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7027                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7028                 CHECK_CFG_EXCEPTION;
7029         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7030                            mono_method_check_inlining (cfg, cmethod) &&
7031                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7032                 int costs;
7033
7034                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7035                         cfg->real_offset += 5;
7036
7037                         *inline_costs += costs - 5;
7038                 } else {
7039                         INLINE_FAILURE ("inline failure");
7040                         // FIXME-VT: Clean this up
7041                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7042                                 GSHAREDVT_FAILURE(*ip);
7043                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7044                 }
7045         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7046                 MonoInst *addr;
7047
7048                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7049
7050                 if (cfg->llvm_only) {
7051                         // FIXME: Avoid initializing vtable_arg
7052                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7053                 } else {
7054                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7055                 }
7056         } else if (context_used &&
7057                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7058                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7059                 MonoInst *cmethod_addr;
7060
7061                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7062
7063                 if (cfg->llvm_only) {
7064                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7065                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7066                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7067                 } else {
7068                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7069                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7070
7071                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7072                 }
7073         } else {
7074                 INLINE_FAILURE ("ctor call");
7075                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7076                                                                                   callvirt_this_arg, NULL, vtable_arg);
7077         }
7078  exception_exit:
7079         return;
7080 }
7081
7082 static void
7083 emit_setret (MonoCompile *cfg, MonoInst *val)
7084 {
7085         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7086         MonoInst *ins;
7087
7088         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7089                 MonoInst *ret_addr;
7090
7091                 if (!cfg->vret_addr) {
7092                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7093                 } else {
7094                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7095
7096                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7097                         ins->klass = mono_class_from_mono_type (ret_type);
7098                 }
7099         } else {
7100 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7101                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7102                         MonoInst *iargs [1];
7103                         MonoInst *conv;
7104
7105                         iargs [0] = val;
7106                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7107                         mono_arch_emit_setret (cfg, cfg->method, conv);
7108                 } else {
7109                         mono_arch_emit_setret (cfg, cfg->method, val);
7110                 }
7111 #else
7112                 mono_arch_emit_setret (cfg, cfg->method, val);
7113 #endif
7114         }
7115 }
7116
7117 /*
7118  * mono_method_to_ir:
7119  *
7120  * Translate the .net IL into linear IR.
7121  *
7122  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7123  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7124  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7125  * @inline_args: if not NULL, contains the arguments to the inline call
7126  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7127  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7128  *
7129  * This method is used to turn ECMA IL into Mono's internal Linear IR
7130  * reprensetation.  It is used both for entire methods, as well as
7131  * inlining existing methods.  In the former case, the @start_bblock,
7132  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7133  * inline_offset is set to zero.
7134  *
7135  * Returns: the inline cost, or -1 if there was an error processing this method.
7136  */
7137 int
7138 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7139                    MonoInst *return_var, MonoInst **inline_args,
7140                    guint inline_offset, gboolean is_virtual_call)
7141 {
7142         MonoError error;
7143         MonoInst *ins, **sp, **stack_start;
7144         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7145         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7146         MonoMethod *cmethod, *method_definition;
7147         MonoInst **arg_array;
7148         MonoMethodHeader *header;
7149         MonoImage *image;
7150         guint32 token, ins_flag;
7151         MonoClass *klass;
7152         MonoClass *constrained_class = NULL;
7153         unsigned char *ip, *end, *target, *err_pos;
7154         MonoMethodSignature *sig;
7155         MonoGenericContext *generic_context = NULL;
7156         MonoGenericContainer *generic_container = NULL;
7157         MonoType **param_types;
7158         int i, n, start_new_bblock, dreg;
7159         int num_calls = 0, inline_costs = 0;
7160         int breakpoint_id = 0;
7161         guint num_args;
7162         GSList *class_inits = NULL;
7163         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7164         int context_used;
7165         gboolean init_locals, seq_points, skip_dead_blocks;
7166         gboolean sym_seq_points = FALSE;
7167         MonoDebugMethodInfo *minfo;
7168         MonoBitSet *seq_point_locs = NULL;
7169         MonoBitSet *seq_point_set_locs = NULL;
7170
7171         cfg->disable_inline = is_jit_optimizer_disabled (method);
7172
7173         /* serialization and xdomain stuff may need access to private fields and methods */
7174         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7175         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7176         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7177         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7178         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7179         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7180
7181         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7182         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7183         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7184         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7185         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7186
7187         image = method->klass->image;
7188         header = mono_method_get_header_checked (method, &cfg->error);
7189         if (!header) {
7190                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7191                 goto exception_exit;
7192         } else {
7193                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7194         }
7195
7196         generic_container = mono_method_get_generic_container (method);
7197         sig = mono_method_signature (method);
7198         num_args = sig->hasthis + sig->param_count;
7199         ip = (unsigned char*)header->code;
7200         cfg->cil_start = ip;
7201         end = ip + header->code_size;
7202         cfg->stat_cil_code_size += header->code_size;
7203
7204         seq_points = cfg->gen_seq_points && cfg->method == method;
7205
7206         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7207                 /* We could hit a seq point before attaching to the JIT (#8338) */
7208                 seq_points = FALSE;
7209         }
7210
7211         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7212                 minfo = mono_debug_lookup_method (method);
7213                 if (minfo) {
7214                         MonoSymSeqPoint *sps;
7215                         int i, n_il_offsets;
7216
7217                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7218                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7219                         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);
7220                         sym_seq_points = TRUE;
7221                         for (i = 0; i < n_il_offsets; ++i) {
7222                                 if (sps [i].il_offset < header->code_size)
7223                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7224                         }
7225                         g_free (sps);
7226
7227                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7228                         if (asyncMethod) {
7229                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7230                                 {
7231                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7232                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7233                                 }
7234                                 mono_debug_free_method_async_debug_info (asyncMethod);
7235                         }
7236                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7237                         /* Methods without line number info like auto-generated property accessors */
7238                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7239                         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);
7240                         sym_seq_points = TRUE;
7241                 }
7242         }
7243
7244         /*
7245          * Methods without init_locals set could cause asserts in various passes
7246          * (#497220). To work around this, we emit dummy initialization opcodes
7247          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7248          * on some platforms.
7249          */
7250         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7251                 init_locals = header->init_locals;
7252         else
7253                 init_locals = TRUE;
7254
7255         method_definition = method;
7256         while (method_definition->is_inflated) {
7257                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7258                 method_definition = imethod->declaring;
7259         }
7260
7261         /* SkipVerification is not allowed if core-clr is enabled */
7262         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7263                 dont_verify = TRUE;
7264                 dont_verify_stloc = TRUE;
7265         }
7266
7267         if (sig->is_inflated)
7268                 generic_context = mono_method_get_context (method);
7269         else if (generic_container)
7270                 generic_context = &generic_container->context;
7271         cfg->generic_context = generic_context;
7272
7273         if (!cfg->gshared)
7274                 g_assert (!sig->has_type_parameters);
7275
7276         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7277                 g_assert (method->is_inflated);
7278                 g_assert (mono_method_get_context (method)->method_inst);
7279         }
7280         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7281                 g_assert (sig->generic_param_count);
7282
7283         if (cfg->method == method) {
7284                 cfg->real_offset = 0;
7285         } else {
7286                 cfg->real_offset = inline_offset;
7287         }
7288
7289         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7290         cfg->cil_offset_to_bb_len = header->code_size;
7291
7292         cfg->current_method = method;
7293
7294         if (cfg->verbose_level > 2)
7295                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7296
7297         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7298         if (sig->hasthis)
7299                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7300         for (n = 0; n < sig->param_count; ++n)
7301                 param_types [n + sig->hasthis] = sig->params [n];
7302         cfg->arg_types = param_types;
7303
7304         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7305         if (cfg->method == method) {
7306
7307                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7308                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7309
7310                 /* ENTRY BLOCK */
7311                 NEW_BBLOCK (cfg, start_bblock);
7312                 cfg->bb_entry = start_bblock;
7313                 start_bblock->cil_code = NULL;
7314                 start_bblock->cil_length = 0;
7315
7316                 /* EXIT BLOCK */
7317                 NEW_BBLOCK (cfg, end_bblock);
7318                 cfg->bb_exit = end_bblock;
7319                 end_bblock->cil_code = NULL;
7320                 end_bblock->cil_length = 0;
7321                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7322                 g_assert (cfg->num_bblocks == 2);
7323
7324                 arg_array = cfg->args;
7325
7326                 if (header->num_clauses) {
7327                         cfg->spvars = g_hash_table_new (NULL, NULL);
7328                         cfg->exvars = g_hash_table_new (NULL, NULL);
7329                 }
7330                 /* handle exception clauses */
7331                 for (i = 0; i < header->num_clauses; ++i) {
7332                         MonoBasicBlock *try_bb;
7333                         MonoExceptionClause *clause = &header->clauses [i];
7334                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7335
7336                         try_bb->real_offset = clause->try_offset;
7337                         try_bb->try_start = TRUE;
7338                         try_bb->region = ((i + 1) << 8) | clause->flags;
7339                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7340                         tblock->real_offset = clause->handler_offset;
7341                         tblock->flags |= BB_EXCEPTION_HANDLER;
7342
7343                         /*
7344                          * Linking the try block with the EH block hinders inlining as we won't be able to
7345                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7346                          */
7347                         if (COMPILE_LLVM (cfg))
7348                                 link_bblock (cfg, try_bb, tblock);
7349
7350                         if (*(ip + clause->handler_offset) == CEE_POP)
7351                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7352
7353                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7354                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7355                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7356                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7357                                 MONO_ADD_INS (tblock, ins);
7358
7359                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7360                                         /* finally clauses already have a seq point */
7361                                         /* seq points for filter clauses are emitted below */
7362                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7363                                         MONO_ADD_INS (tblock, ins);
7364                                 }
7365
7366                                 /* todo: is a fault block unsafe to optimize? */
7367                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7368                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7369                         }
7370
7371                         /*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);
7372                           while (p < end) {
7373                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7374                           }*/
7375                         /* catch and filter blocks get the exception object on the stack */
7376                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7377                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7378
7379                                 /* mostly like handle_stack_args (), but just sets the input args */
7380                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7381                                 tblock->in_scount = 1;
7382                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7383                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7384
7385                                 cfg->cbb = tblock;
7386
7387 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7388                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7389                                 if (!cfg->compile_llvm) {
7390                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7391                                         ins->dreg = tblock->in_stack [0]->dreg;
7392                                         MONO_ADD_INS (tblock, ins);
7393                                 }
7394 #else
7395                                 MonoInst *dummy_use;
7396
7397                                 /*
7398                                  * Add a dummy use for the exvar so its liveness info will be
7399                                  * correct.
7400                                  */
7401                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7402 #endif
7403
7404                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7405                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7406                                         MONO_ADD_INS (tblock, ins);
7407                                 }
7408
7409                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7410                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7411                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7412                                         tblock->real_offset = clause->data.filter_offset;
7413                                         tblock->in_scount = 1;
7414                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7415                                         /* The filter block shares the exvar with the handler block */
7416                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7417                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7418                                         MONO_ADD_INS (tblock, ins);
7419                                 }
7420                         }
7421
7422                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7423                                         clause->data.catch_class &&
7424                                         cfg->gshared &&
7425                                         mono_class_check_context_used (clause->data.catch_class)) {
7426                                 /*
7427                                  * In shared generic code with catch
7428                                  * clauses containing type variables
7429                                  * the exception handling code has to
7430                                  * be able to get to the rgctx.
7431                                  * Therefore we have to make sure that
7432                                  * the vtable/mrgctx argument (for
7433                                  * static or generic methods) or the
7434                                  * "this" argument (for non-static
7435                                  * methods) are live.
7436                                  */
7437                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7438                                                 mini_method_get_context (method)->method_inst ||
7439                                                 method->klass->valuetype) {
7440                                         mono_get_vtable_var (cfg);
7441                                 } else {
7442                                         MonoInst *dummy_use;
7443
7444                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7445                                 }
7446                         }
7447                 }
7448         } else {
7449                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7450                 cfg->cbb = start_bblock;
7451                 cfg->args = arg_array;
7452                 mono_save_args (cfg, sig, inline_args);
7453         }
7454
7455         /* FIRST CODE BLOCK */
7456         NEW_BBLOCK (cfg, tblock);
7457         tblock->cil_code = ip;
7458         cfg->cbb = tblock;
7459         cfg->ip = ip;
7460
7461         ADD_BBLOCK (cfg, tblock);
7462
7463         if (cfg->method == method) {
7464                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7465                 if (breakpoint_id) {
7466                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7467                         MONO_ADD_INS (cfg->cbb, ins);
7468                 }
7469         }
7470
7471         /* we use a separate basic block for the initialization code */
7472         NEW_BBLOCK (cfg, init_localsbb);
7473         if (cfg->method == method)
7474                 cfg->bb_init = init_localsbb;
7475         init_localsbb->real_offset = cfg->real_offset;
7476         start_bblock->next_bb = init_localsbb;
7477         init_localsbb->next_bb = cfg->cbb;
7478         link_bblock (cfg, start_bblock, init_localsbb);
7479         link_bblock (cfg, init_localsbb, cfg->cbb);
7480
7481         cfg->cbb = init_localsbb;
7482
7483         if (cfg->gsharedvt && cfg->method == method) {
7484                 MonoGSharedVtMethodInfo *info;
7485                 MonoInst *var, *locals_var;
7486                 int dreg;
7487
7488                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7489                 info->method = cfg->method;
7490                 info->count_entries = 16;
7491                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7492                 cfg->gsharedvt_info = info;
7493
7494                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7495                 /* prevent it from being register allocated */
7496                 //var->flags |= MONO_INST_VOLATILE;
7497                 cfg->gsharedvt_info_var = var;
7498
7499                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7500                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7501
7502                 /* Allocate locals */
7503                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7504                 /* prevent it from being register allocated */
7505                 //locals_var->flags |= MONO_INST_VOLATILE;
7506                 cfg->gsharedvt_locals_var = locals_var;
7507
7508                 dreg = alloc_ireg (cfg);
7509                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7510
7511                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7512                 ins->dreg = locals_var->dreg;
7513                 ins->sreg1 = dreg;
7514                 MONO_ADD_INS (cfg->cbb, ins);
7515                 cfg->gsharedvt_locals_var_ins = ins;
7516
7517                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7518                 /*
7519                 if (init_locals)
7520                         ins->flags |= MONO_INST_INIT;
7521                 */
7522         }
7523
7524         if (mono_security_core_clr_enabled ()) {
7525                 /* check if this is native code, e.g. an icall or a p/invoke */
7526                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7527                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7528                         if (wrapped) {
7529                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7530                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7531
7532                                 /* if this ia a native call then it can only be JITted from platform code */
7533                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7534                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7535                                                 MonoException *ex = icall ? mono_get_exception_security () :
7536                                                         mono_get_exception_method_access ();
7537                                                 emit_throw_exception (cfg, ex);
7538                                         }
7539                                 }
7540                         }
7541                 }
7542         }
7543
7544         CHECK_CFG_EXCEPTION;
7545
7546         if (header->code_size == 0)
7547                 UNVERIFIED;
7548
7549         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7550                 ip = err_pos;
7551                 UNVERIFIED;
7552         }
7553
7554         if (cfg->method == method)
7555                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7556
7557         for (n = 0; n < header->num_locals; ++n) {
7558                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7559                         UNVERIFIED;
7560         }
7561         class_inits = NULL;
7562
7563         /* We force the vtable variable here for all shared methods
7564            for the possibility that they might show up in a stack
7565            trace where their exact instantiation is needed. */
7566         if (cfg->gshared && method == cfg->method) {
7567                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7568                                 mini_method_get_context (method)->method_inst ||
7569                                 method->klass->valuetype) {
7570                         mono_get_vtable_var (cfg);
7571                 } else {
7572                         /* FIXME: Is there a better way to do this?
7573                            We need the variable live for the duration
7574                            of the whole method. */
7575                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7576                 }
7577         }
7578
7579         /* add a check for this != NULL to inlined methods */
7580         if (is_virtual_call) {
7581                 MonoInst *arg_ins;
7582
7583                 NEW_ARGLOAD (cfg, arg_ins, 0);
7584                 MONO_ADD_INS (cfg->cbb, arg_ins);
7585                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7586         }
7587
7588         skip_dead_blocks = !dont_verify;
7589         if (skip_dead_blocks) {
7590                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7591                 CHECK_CFG_ERROR;
7592                 g_assert (bb);
7593         }
7594
7595         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7596         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7597
7598         ins_flag = 0;
7599         start_new_bblock = 0;
7600         while (ip < end) {
7601                 if (cfg->method == method)
7602                         cfg->real_offset = ip - header->code;
7603                 else
7604                         cfg->real_offset = inline_offset;
7605                 cfg->ip = ip;
7606
7607                 context_used = 0;
7608
7609                 if (start_new_bblock) {
7610                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7611                         if (start_new_bblock == 2) {
7612                                 g_assert (ip == tblock->cil_code);
7613                         } else {
7614                                 GET_BBLOCK (cfg, tblock, ip);
7615                         }
7616                         cfg->cbb->next_bb = tblock;
7617                         cfg->cbb = tblock;
7618                         start_new_bblock = 0;
7619                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7620                                 if (cfg->verbose_level > 3)
7621                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7622                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7623                                 *sp++ = ins;
7624                         }
7625                         if (class_inits)
7626                                 g_slist_free (class_inits);
7627                         class_inits = NULL;
7628                 } else {
7629                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7630                                 link_bblock (cfg, cfg->cbb, tblock);
7631                                 if (sp != stack_start) {
7632                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7633                                         sp = stack_start;
7634                                         CHECK_UNVERIFIABLE (cfg);
7635                                 }
7636                                 cfg->cbb->next_bb = tblock;
7637                                 cfg->cbb = tblock;
7638                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7639                                         if (cfg->verbose_level > 3)
7640                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7641                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7642                                         *sp++ = ins;
7643                                 }
7644                                 g_slist_free (class_inits);
7645                                 class_inits = NULL;
7646                         }
7647                 }
7648
7649                 if (skip_dead_blocks) {
7650                         int ip_offset = ip - header->code;
7651
7652                         if (ip_offset == bb->end)
7653                                 bb = bb->next;
7654
7655                         if (bb->dead) {
7656                                 int op_size = mono_opcode_size (ip, end);
7657                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7658
7659                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7660
7661                                 if (ip_offset + op_size == bb->end) {
7662                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7663                                         MONO_ADD_INS (cfg->cbb, ins);
7664                                         start_new_bblock = 1;
7665                                 }
7666
7667                                 ip += op_size;
7668                                 continue;
7669                         }
7670                 }
7671                 /*
7672                  * Sequence points are points where the debugger can place a breakpoint.
7673                  * Currently, we generate these automatically at points where the IL
7674                  * stack is empty.
7675                  */
7676                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7677                         /*
7678                          * Make methods interruptable at the beginning, and at the targets of
7679                          * backward branches.
7680                          * Also, do this at the start of every bblock in methods with clauses too,
7681                          * to be able to handle instructions with inprecise control flow like
7682                          * throw/endfinally.
7683                          * Backward branches are handled at the end of method-to-ir ().
7684                          */
7685                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7686                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7687
7688                         /* Avoid sequence points on empty IL like .volatile */
7689                         // FIXME: Enable this
7690                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7691                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7692                         if ((sp != stack_start) && !sym_seq_point)
7693                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7694                         MONO_ADD_INS (cfg->cbb, ins);
7695
7696                         if (sym_seq_points)
7697                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7698                 }
7699
7700                 cfg->cbb->real_offset = cfg->real_offset;
7701
7702                 if ((cfg->method == method) && cfg->coverage_info) {
7703                         guint32 cil_offset = ip - header->code;
7704                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7705
7706                         /* TODO: Use an increment here */
7707 #if defined(TARGET_X86)
7708                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
7709                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
7710                         ins->inst_imm = 1;
7711                         MONO_ADD_INS (cfg->cbb, ins);
7712 #else
7713                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
7714                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7715 #endif
7716                 }
7717
7718                 if (cfg->verbose_level > 3)
7719                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7720
7721                 switch (*ip) {
7722                 case CEE_NOP:
7723                         if (seq_points && !sym_seq_points && sp != stack_start) {
7724                                 /*
7725                                  * The C# compiler uses these nops to notify the JIT that it should
7726                                  * insert seq points.
7727                                  */
7728                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7729                                 MONO_ADD_INS (cfg->cbb, ins);
7730                         }
7731                         if (cfg->keep_cil_nops)
7732                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7733                         else
7734                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7735                         ip++;
7736                         MONO_ADD_INS (cfg->cbb, ins);
7737                         break;
7738                 case CEE_BREAK:
7739                         if (mini_should_insert_breakpoint (cfg->method)) {
7740                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7741                         } else {
7742                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7743                         }
7744                         ip++;
7745                         MONO_ADD_INS (cfg->cbb, ins);
7746                         break;
7747                 case CEE_LDARG_0:
7748                 case CEE_LDARG_1:
7749                 case CEE_LDARG_2:
7750                 case CEE_LDARG_3:
7751                         CHECK_STACK_OVF (1);
7752                         n = (*ip)-CEE_LDARG_0;
7753                         CHECK_ARG (n);
7754                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7755                         ip++;
7756                         *sp++ = ins;
7757                         break;
7758                 case CEE_LDLOC_0:
7759                 case CEE_LDLOC_1:
7760                 case CEE_LDLOC_2:
7761                 case CEE_LDLOC_3:
7762                         CHECK_STACK_OVF (1);
7763                         n = (*ip)-CEE_LDLOC_0;
7764                         CHECK_LOCAL (n);
7765                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7766                         ip++;
7767                         *sp++ = ins;
7768                         break;
7769                 case CEE_STLOC_0:
7770                 case CEE_STLOC_1:
7771                 case CEE_STLOC_2:
7772                 case CEE_STLOC_3: {
7773                         CHECK_STACK (1);
7774                         n = (*ip)-CEE_STLOC_0;
7775                         CHECK_LOCAL (n);
7776                         --sp;
7777                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7778                                 UNVERIFIED;
7779                         emit_stloc_ir (cfg, sp, header, n);
7780                         ++ip;
7781                         inline_costs += 1;
7782                         break;
7783                         }
7784                 case CEE_LDARG_S:
7785                         CHECK_OPSIZE (2);
7786                         CHECK_STACK_OVF (1);
7787                         n = ip [1];
7788                         CHECK_ARG (n);
7789                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7790                         *sp++ = ins;
7791                         ip += 2;
7792                         break;
7793                 case CEE_LDARGA_S:
7794                         CHECK_OPSIZE (2);
7795                         CHECK_STACK_OVF (1);
7796                         n = ip [1];
7797                         CHECK_ARG (n);
7798                         NEW_ARGLOADA (cfg, ins, n);
7799                         MONO_ADD_INS (cfg->cbb, ins);
7800                         *sp++ = ins;
7801                         ip += 2;
7802                         break;
7803                 case CEE_STARG_S:
7804                         CHECK_OPSIZE (2);
7805                         CHECK_STACK (1);
7806                         --sp;
7807                         n = ip [1];
7808                         CHECK_ARG (n);
7809                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7810                                 UNVERIFIED;
7811                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7812                         ip += 2;
7813                         break;
7814                 case CEE_LDLOC_S:
7815                         CHECK_OPSIZE (2);
7816                         CHECK_STACK_OVF (1);
7817                         n = ip [1];
7818                         CHECK_LOCAL (n);
7819                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7820                         *sp++ = ins;
7821                         ip += 2;
7822                         break;
7823                 case CEE_LDLOCA_S: {
7824                         unsigned char *tmp_ip;
7825                         CHECK_OPSIZE (2);
7826                         CHECK_STACK_OVF (1);
7827                         CHECK_LOCAL (ip [1]);
7828
7829                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7830                                 ip = tmp_ip;
7831                                 inline_costs += 1;
7832                                 break;
7833                         }
7834
7835                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7836                         *sp++ = ins;
7837                         ip += 2;
7838                         break;
7839                 }
7840                 case CEE_STLOC_S:
7841                         CHECK_OPSIZE (2);
7842                         CHECK_STACK (1);
7843                         --sp;
7844                         CHECK_LOCAL (ip [1]);
7845                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7846                                 UNVERIFIED;
7847                         emit_stloc_ir (cfg, sp, header, ip [1]);
7848                         ip += 2;
7849                         inline_costs += 1;
7850                         break;
7851                 case CEE_LDNULL:
7852                         CHECK_STACK_OVF (1);
7853                         EMIT_NEW_PCONST (cfg, ins, NULL);
7854                         ins->type = STACK_OBJ;
7855                         ++ip;
7856                         *sp++ = ins;
7857                         break;
7858                 case CEE_LDC_I4_M1:
7859                         CHECK_STACK_OVF (1);
7860                         EMIT_NEW_ICONST (cfg, ins, -1);
7861                         ++ip;
7862                         *sp++ = ins;
7863                         break;
7864                 case CEE_LDC_I4_0:
7865                 case CEE_LDC_I4_1:
7866                 case CEE_LDC_I4_2:
7867                 case CEE_LDC_I4_3:
7868                 case CEE_LDC_I4_4:
7869                 case CEE_LDC_I4_5:
7870                 case CEE_LDC_I4_6:
7871                 case CEE_LDC_I4_7:
7872                 case CEE_LDC_I4_8:
7873                         CHECK_STACK_OVF (1);
7874                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7875                         ++ip;
7876                         *sp++ = ins;
7877                         break;
7878                 case CEE_LDC_I4_S:
7879                         CHECK_OPSIZE (2);
7880                         CHECK_STACK_OVF (1);
7881                         ++ip;
7882                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7883                         ++ip;
7884                         *sp++ = ins;
7885                         break;
7886                 case CEE_LDC_I4:
7887                         CHECK_OPSIZE (5);
7888                         CHECK_STACK_OVF (1);
7889                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7890                         ip += 5;
7891                         *sp++ = ins;
7892                         break;
7893                 case CEE_LDC_I8:
7894                         CHECK_OPSIZE (9);
7895                         CHECK_STACK_OVF (1);
7896                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7897                         ins->type = STACK_I8;
7898                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7899                         ++ip;
7900                         ins->inst_l = (gint64)read64 (ip);
7901                         MONO_ADD_INS (cfg->cbb, ins);
7902                         ip += 8;
7903                         *sp++ = ins;
7904                         break;
7905                 case CEE_LDC_R4: {
7906                         float *f;
7907                         gboolean use_aotconst = FALSE;
7908
7909 #ifdef TARGET_POWERPC
7910                         /* FIXME: Clean this up */
7911                         if (cfg->compile_aot)
7912                                 use_aotconst = TRUE;
7913 #endif
7914
7915                         /* FIXME: we should really allocate this only late in the compilation process */
7916                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7917                         CHECK_OPSIZE (5);
7918                         CHECK_STACK_OVF (1);
7919
7920                         if (use_aotconst) {
7921                                 MonoInst *cons;
7922                                 int dreg;
7923
7924                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7925
7926                                 dreg = alloc_freg (cfg);
7927                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7928                                 ins->type = cfg->r4_stack_type;
7929                         } else {
7930                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7931                                 ins->type = cfg->r4_stack_type;
7932                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7933                                 ins->inst_p0 = f;
7934                                 MONO_ADD_INS (cfg->cbb, ins);
7935                         }
7936                         ++ip;
7937                         readr4 (ip, f);
7938                         ip += 4;
7939                         *sp++ = ins;
7940                         break;
7941                 }
7942                 case CEE_LDC_R8: {
7943                         double *d;
7944                         gboolean use_aotconst = FALSE;
7945
7946 #ifdef TARGET_POWERPC
7947                         /* FIXME: Clean this up */
7948                         if (cfg->compile_aot)
7949                                 use_aotconst = TRUE;
7950 #endif
7951
7952                         /* FIXME: we should really allocate this only late in the compilation process */
7953                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
7954                         CHECK_OPSIZE (9);
7955                         CHECK_STACK_OVF (1);
7956
7957                         if (use_aotconst) {
7958                                 MonoInst *cons;
7959                                 int dreg;
7960
7961                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7962
7963                                 dreg = alloc_freg (cfg);
7964                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7965                                 ins->type = STACK_R8;
7966                         } else {
7967                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7968                                 ins->type = STACK_R8;
7969                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7970                                 ins->inst_p0 = d;
7971                                 MONO_ADD_INS (cfg->cbb, ins);
7972                         }
7973                         ++ip;
7974                         readr8 (ip, d);
7975                         ip += 8;
7976                         *sp++ = ins;
7977                         break;
7978                 }
7979                 case CEE_DUP: {
7980                         MonoInst *temp, *store;
7981                         CHECK_STACK (1);
7982                         CHECK_STACK_OVF (1);
7983                         sp--;
7984                         ins = *sp;
7985
7986                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
7987                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
7988
7989                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7990                         *sp++ = ins;
7991
7992                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7993                         *sp++ = ins;
7994
7995                         ++ip;
7996                         inline_costs += 2;
7997                         break;
7998                 }
7999                 case CEE_POP:
8000                         CHECK_STACK (1);
8001                         ip++;
8002                         --sp;
8003
8004 #ifdef TARGET_X86
8005                         if (sp [0]->type == STACK_R8)
8006                                 /* we need to pop the value from the x86 FP stack */
8007                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8008 #endif
8009                         break;
8010                 case CEE_JMP: {
8011                         MonoCallInst *call;
8012                         MonoMethodSignature *fsig;
8013                         int i, n;
8014
8015                         INLINE_FAILURE ("jmp");
8016                         GSHAREDVT_FAILURE (*ip);
8017
8018                         CHECK_OPSIZE (5);
8019                         if (stack_start != sp)
8020                                 UNVERIFIED;
8021                         token = read32 (ip + 1);
8022                         /* FIXME: check the signature matches */
8023                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8024                         CHECK_CFG_ERROR;
8025
8026                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8027                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8028
8029                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8030
8031                         fsig = mono_method_signature (cmethod);
8032                         n = fsig->param_count + fsig->hasthis;
8033                         if (cfg->llvm_only) {
8034                                 MonoInst **args;
8035
8036                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8037                                 for (i = 0; i < n; ++i)
8038                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8039                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8040                                 /*
8041                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8042                                  * have to emit a normal return since llvm expects it.
8043                                  */
8044                                 if (cfg->ret)
8045                                         emit_setret (cfg, ins);
8046                                 MONO_INST_NEW (cfg, ins, OP_BR);
8047                                 ins->inst_target_bb = end_bblock;
8048                                 MONO_ADD_INS (cfg->cbb, ins);
8049                                 link_bblock (cfg, cfg->cbb, end_bblock);
8050                                 ip += 5;
8051                                 break;
8052                         } else if (cfg->backend->have_op_tail_call) {
8053                                 /* Handle tail calls similarly to calls */
8054                                 DISABLE_AOT (cfg);
8055
8056                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8057                                 call->method = cmethod;
8058                                 call->tail_call = TRUE;
8059                                 call->signature = mono_method_signature (cmethod);
8060                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8061                                 call->inst.inst_p0 = cmethod;
8062                                 for (i = 0; i < n; ++i)
8063                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8064
8065                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8066                                         call->vret_var = cfg->vret_addr;
8067
8068                                 mono_arch_emit_call (cfg, call);
8069                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8070                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8071                         } else {
8072                                 for (i = 0; i < num_args; ++i)
8073                                         /* Prevent arguments from being optimized away */
8074                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8075
8076                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8077                                 ins = (MonoInst*)call;
8078                                 ins->inst_p0 = cmethod;
8079                                 MONO_ADD_INS (cfg->cbb, ins);
8080                         }
8081
8082                         ip += 5;
8083                         start_new_bblock = 1;
8084                         break;
8085                 }
8086                 case CEE_CALLI: {
8087                         MonoInst *addr;
8088                         MonoMethodSignature *fsig;
8089
8090                         CHECK_OPSIZE (5);
8091                         token = read32 (ip + 1);
8092
8093                         ins = NULL;
8094
8095                         //GSHAREDVT_FAILURE (*ip);
8096                         cmethod = NULL;
8097                         CHECK_STACK (1);
8098                         --sp;
8099                         addr = *sp;
8100                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8101                         CHECK_CFG_ERROR;
8102
8103                         if (method->dynamic && fsig->pinvoke) {
8104                                 MonoInst *args [3];
8105
8106                                 /*
8107                                  * This is a call through a function pointer using a pinvoke
8108                                  * signature. Have to create a wrapper and call that instead.
8109                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8110                                  * instead based on the signature.
8111                                  */
8112                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8113                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8114                                 args [2] = addr;
8115                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8116                         }
8117
8118                         n = fsig->param_count + fsig->hasthis;
8119
8120                         CHECK_STACK (n);
8121
8122                         //g_assert (!virtual_ || fsig->hasthis);
8123
8124                         sp -= n;
8125
8126                         inline_costs += 10 * num_calls++;
8127
8128                         /*
8129                          * Making generic calls out of gsharedvt methods.
8130                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8131                          * patching gshared method addresses into a gsharedvt method.
8132                          */
8133                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8134                                 /*
8135                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8136                                  */
8137                                 MonoInst *callee = addr;
8138
8139                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8140                                         /* Not tested */
8141                                         GSHAREDVT_FAILURE (*ip);
8142
8143                                 if (cfg->llvm_only)
8144                                         // FIXME:
8145                                         GSHAREDVT_FAILURE (*ip);
8146
8147                                 addr = emit_get_rgctx_sig (cfg, context_used,
8148                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8149                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8150                                 goto calli_end;
8151                         }
8152
8153                         /* Prevent inlining of methods with indirect calls */
8154                         INLINE_FAILURE ("indirect call");
8155
8156                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8157                                 MonoJumpInfoType info_type;
8158                                 gpointer info_data;
8159
8160                                 /*
8161                                  * Instead of emitting an indirect call, emit a direct call
8162                                  * with the contents of the aotconst as the patch info.
8163                                  */
8164                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8165                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8166                                         info_data = addr->inst_p0;
8167                                 } else {
8168                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8169                                         info_data = addr->inst_right->inst_left;
8170                                 }
8171
8172                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8173                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8174                                         NULLIFY_INS (addr);
8175                                         goto calli_end;
8176                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8177                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8178                                         NULLIFY_INS (addr);
8179                                         goto calli_end;
8180                                 }
8181                         }
8182                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8183
8184                         calli_end:
8185
8186                         /* End of call, INS should contain the result of the call, if any */
8187
8188                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8189                                 g_assert (ins);
8190                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8191                         }
8192
8193                         CHECK_CFG_EXCEPTION;
8194
8195                         ip += 5;
8196                         ins_flag = 0;
8197                         constrained_class = NULL;
8198                         break;
8199                 }
8200                 case CEE_CALL:
8201                 case CEE_CALLVIRT: {
8202                         MonoInst *addr = NULL;
8203                         MonoMethodSignature *fsig = NULL;
8204                         int array_rank = 0;
8205                         int virtual_ = *ip == CEE_CALLVIRT;
8206                         gboolean pass_imt_from_rgctx = FALSE;
8207                         MonoInst *imt_arg = NULL;
8208                         MonoInst *keep_this_alive = NULL;
8209                         gboolean pass_vtable = FALSE;
8210                         gboolean pass_mrgctx = FALSE;
8211                         MonoInst *vtable_arg = NULL;
8212                         gboolean check_this = FALSE;
8213                         gboolean supported_tail_call = FALSE;
8214                         gboolean tail_call = FALSE;
8215                         gboolean need_seq_point = FALSE;
8216                         guint32 call_opcode = *ip;
8217                         gboolean emit_widen = TRUE;
8218                         gboolean push_res = TRUE;
8219                         gboolean skip_ret = FALSE;
8220                         gboolean delegate_invoke = FALSE;
8221                         gboolean direct_icall = FALSE;
8222                         gboolean constrained_partial_call = FALSE;
8223                         MonoMethod *cil_method;
8224
8225                         CHECK_OPSIZE (5);
8226                         token = read32 (ip + 1);
8227
8228                         ins = NULL;
8229
8230                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8231                         CHECK_CFG_ERROR;
8232
8233                         cil_method = cmethod;
8234
8235                         if (constrained_class) {
8236                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8237                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8238                                                 g_assert (!cmethod->klass->valuetype);
8239                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8240                                                         constrained_partial_call = TRUE;
8241                                         }
8242                                 }
8243
8244                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8245                                         if (cfg->verbose_level > 2)
8246                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8247                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8248                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8249                                                   cfg->gshared)) {
8250                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8251                                                 CHECK_CFG_ERROR;
8252                                         }
8253                                 } else {
8254                                         if (cfg->verbose_level > 2)
8255                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8256
8257                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8258                                                 /*
8259                                                  * This is needed since get_method_constrained can't find
8260                                                  * the method in klass representing a type var.
8261                                                  * The type var is guaranteed to be a reference type in this
8262                                                  * case.
8263                                                  */
8264                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8265                                                         g_assert (!cmethod->klass->valuetype);
8266                                         } else {
8267                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8268                                                 CHECK_CFG_ERROR;
8269                                         }
8270                                 }
8271
8272                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8273                                         /* Use the corresponding method from the base type to avoid boxing */
8274                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8275                                         g_assert (base_type);
8276                                         constrained_class = mono_class_from_mono_type (base_type);
8277                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8278                                         g_assert (cmethod);
8279                                 }
8280                         }
8281
8282                         if (!dont_verify && !cfg->skip_visibility) {
8283                                 MonoMethod *target_method = cil_method;
8284                                 if (method->is_inflated) {
8285                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8286                                         CHECK_CFG_ERROR;
8287                                 }
8288                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8289                                         !mono_method_can_access_method (method, cil_method))
8290                                         emit_method_access_failure (cfg, method, cil_method);
8291                         }
8292
8293                         if (mono_security_core_clr_enabled ())
8294                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8295
8296                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8297                                 /* MS.NET seems to silently convert this to a callvirt */
8298                                 virtual_ = 1;
8299
8300                         {
8301                                 /*
8302                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8303                                  * converts to a callvirt.
8304                                  *
8305                                  * tests/bug-515884.il is an example of this behavior
8306                                  */
8307                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8308                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8309                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8310                                         virtual_ = 1;
8311                         }
8312
8313                         if (!cmethod->klass->inited)
8314                                 if (!mono_class_init (cmethod->klass))
8315                                         TYPE_LOAD_ERROR (cmethod->klass);
8316
8317                         fsig = mono_method_signature (cmethod);
8318                         if (!fsig)
8319                                 LOAD_ERROR;
8320                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8321                                 mini_class_is_system_array (cmethod->klass)) {
8322                                 array_rank = cmethod->klass->rank;
8323                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8324                                 direct_icall = TRUE;
8325                         } else if (fsig->pinvoke) {
8326                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8327                                 fsig = mono_method_signature (wrapper);
8328                         } else if (constrained_class) {
8329                         } else {
8330                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8331                                 CHECK_CFG_ERROR;
8332                         }
8333
8334                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8335                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8336
8337                         /* See code below */
8338                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8339                                 MonoBasicBlock *tbb;
8340
8341                                 GET_BBLOCK (cfg, tbb, ip + 5);
8342                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8343                                         /*
8344                                          * We want to extend the try block to cover the call, but we can't do it if the
8345                                          * call is made directly since its followed by an exception check.
8346                                          */
8347                                         direct_icall = FALSE;
8348                                 }
8349                         }
8350
8351                         mono_save_token_info (cfg, image, token, cil_method);
8352
8353                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8354                                 need_seq_point = TRUE;
8355
8356                         /* Don't support calls made using type arguments for now */
8357                         /*
8358                           if (cfg->gsharedvt) {
8359                           if (mini_is_gsharedvt_signature (fsig))
8360                           GSHAREDVT_FAILURE (*ip);
8361                           }
8362                         */
8363
8364                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8365                                 g_assert_not_reached ();
8366
8367                         n = fsig->param_count + fsig->hasthis;
8368
8369                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8370                                 UNVERIFIED;
8371
8372                         if (!cfg->gshared)
8373                                 g_assert (!mono_method_check_context_used (cmethod));
8374
8375                         CHECK_STACK (n);
8376
8377                         //g_assert (!virtual_ || fsig->hasthis);
8378
8379                         sp -= n;
8380
8381                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8382                                 cfg->cbb->out_of_line = TRUE;
8383
8384                         /*
8385                          * We have the `constrained.' prefix opcode.
8386                          */
8387                         if (constrained_class) {
8388                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8389                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8390                                                 /* The 'Own method' case below */
8391                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8392                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8393                                         } else {
8394                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8395                                                 CHECK_CFG_EXCEPTION;
8396                                                 g_assert (ins);
8397                                                 goto call_end;
8398                                         }
8399                                 }
8400
8401                                 if (constrained_partial_call) {
8402                                         gboolean need_box = TRUE;
8403
8404                                         /*
8405                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8406                                          * called method is not known at compile time either. The called method could end up being
8407                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8408                                          * to box the receiver.
8409                                          * A simple solution would be to box always and make a normal virtual call, but that would
8410                                          * be bad performance wise.
8411                                          */
8412                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8413                                                 /*
8414                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8415                                                  */
8416                                                 need_box = FALSE;
8417                                         }
8418
8419                                         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)) {
8420                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8421                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8422                                                 ins->klass = constrained_class;
8423                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8424                                                 CHECK_CFG_EXCEPTION;
8425                                         } else if (need_box) {
8426                                                 MonoInst *box_type;
8427                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8428                                                 MonoInst *nonbox_call;
8429
8430                                                 /*
8431                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8432                                                  * if needed.
8433                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8434                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8435                                                  */
8436                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8437
8438                                                 NEW_BBLOCK (cfg, is_ref_bb);
8439                                                 NEW_BBLOCK (cfg, end_bb);
8440
8441                                                 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);
8442                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8443                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8444
8445                                                 /* Non-ref case */
8446                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8447
8448                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8449
8450                                                 /* Ref case */
8451                                                 MONO_START_BB (cfg, is_ref_bb);
8452                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8453                                                 ins->klass = constrained_class;
8454                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8455                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8456
8457                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8458
8459                                                 MONO_START_BB (cfg, end_bb);
8460                                                 cfg->cbb = end_bb;
8461
8462                                                 nonbox_call->dreg = ins->dreg;
8463                                                 goto call_end;
8464                                         } else {
8465                                                 g_assert (mono_class_is_interface (cmethod->klass));
8466                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8467                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8468                                                 goto call_end;
8469                                         }
8470                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8471                                         /*
8472                                          * The type parameter is instantiated as a valuetype,
8473                                          * but that type doesn't override the method we're
8474                                          * calling, so we need to box `this'.
8475                                          */
8476                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8477                                         ins->klass = constrained_class;
8478                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8479                                         CHECK_CFG_EXCEPTION;
8480                                 } else if (!constrained_class->valuetype) {
8481                                         int dreg = alloc_ireg_ref (cfg);
8482
8483                                         /*
8484                                          * The type parameter is instantiated as a reference
8485                                          * type.  We have a managed pointer on the stack, so
8486                                          * we need to dereference it here.
8487                                          */
8488                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8489                                         ins->type = STACK_OBJ;
8490                                         sp [0] = ins;
8491                                 } else {
8492                                         if (cmethod->klass->valuetype) {
8493                                                 /* Own method */
8494                                         } else {
8495                                                 /* Interface method */
8496                                                 int ioffset, slot;
8497
8498                                                 mono_class_setup_vtable (constrained_class);
8499                                                 CHECK_TYPELOAD (constrained_class);
8500                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8501                                                 if (ioffset == -1)
8502                                                         TYPE_LOAD_ERROR (constrained_class);
8503                                                 slot = mono_method_get_vtable_slot (cmethod);
8504                                                 if (slot == -1)
8505                                                         TYPE_LOAD_ERROR (cmethod->klass);
8506                                                 cmethod = constrained_class->vtable [ioffset + slot];
8507
8508                                                 if (cmethod->klass == mono_defaults.enum_class) {
8509                                                         /* Enum implements some interfaces, so treat this as the first case */
8510                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8511                                                         ins->klass = constrained_class;
8512                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8513                                                         CHECK_CFG_EXCEPTION;
8514                                                 }
8515                                         }
8516                                         virtual_ = 0;
8517                                 }
8518                                 constrained_class = NULL;
8519                         }
8520
8521                         if (check_call_signature (cfg, fsig, sp))
8522                                 UNVERIFIED;
8523
8524                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8525                                 delegate_invoke = TRUE;
8526
8527                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8528                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8529                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8530                                         emit_widen = FALSE;
8531                                 }
8532
8533                                 goto call_end;
8534                         }
8535
8536                         /*
8537                          * If the callee is a shared method, then its static cctor
8538                          * might not get called after the call was patched.
8539                          */
8540                         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)) {
8541                                 emit_class_init (cfg, cmethod->klass);
8542                                 CHECK_TYPELOAD (cmethod->klass);
8543                         }
8544
8545                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8546
8547                         if (cfg->gshared) {
8548                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8549
8550                                 context_used = mini_method_check_context_used (cfg, cmethod);
8551
8552                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8553                                         /* Generic method interface
8554                                            calls are resolved via a
8555                                            helper function and don't
8556                                            need an imt. */
8557                                         if (!cmethod_context || !cmethod_context->method_inst)
8558                                                 pass_imt_from_rgctx = TRUE;
8559                                 }
8560
8561                                 /*
8562                                  * If a shared method calls another
8563                                  * shared method then the caller must
8564                                  * have a generic sharing context
8565                                  * because the magic trampoline
8566                                  * requires it.  FIXME: We shouldn't
8567                                  * have to force the vtable/mrgctx
8568                                  * variable here.  Instead there
8569                                  * should be a flag in the cfg to
8570                                  * request a generic sharing context.
8571                                  */
8572                                 if (context_used &&
8573                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8574                                         mono_get_vtable_var (cfg);
8575                         }
8576
8577                         if (pass_vtable) {
8578                                 if (context_used) {
8579                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8580                                 } else {
8581                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8582
8583                                         CHECK_TYPELOAD (cmethod->klass);
8584                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8585                                 }
8586                         }
8587
8588                         if (pass_mrgctx) {
8589                                 g_assert (!vtable_arg);
8590
8591                                 if (!cfg->compile_aot) {
8592                                         /*
8593                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8594                                          * for type load errors before.
8595                                          */
8596                                         mono_class_setup_vtable (cmethod->klass);
8597                                         CHECK_TYPELOAD (cmethod->klass);
8598                                 }
8599
8600                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8601
8602                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8603                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8604                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8605                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8606                                         if (virtual_)
8607                                                 check_this = TRUE;
8608                                         virtual_ = 0;
8609                                 }
8610                         }
8611
8612                         if (pass_imt_from_rgctx) {
8613                                 g_assert (!pass_vtable);
8614
8615                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8616                                         cmethod, MONO_RGCTX_INFO_METHOD);
8617                         }
8618
8619                         if (check_this)
8620                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8621
8622                         /* Calling virtual generic methods */
8623                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8624                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8625                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8626                             fsig->generic_param_count &&
8627                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8628                                 !cfg->llvm_only) {
8629                                 MonoInst *this_temp, *this_arg_temp, *store;
8630                                 MonoInst *iargs [4];
8631
8632                                 g_assert (fsig->is_inflated);
8633
8634                                 /* Prevent inlining of methods that contain indirect calls */
8635                                 INLINE_FAILURE ("virtual generic call");
8636
8637                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8638                                         GSHAREDVT_FAILURE (*ip);
8639
8640                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8641                                         g_assert (!imt_arg);
8642                                         if (!context_used)
8643                                                 g_assert (cmethod->is_inflated);
8644                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8645                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8646                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8647                                 } else {
8648                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8649                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8650                                         MONO_ADD_INS (cfg->cbb, store);
8651
8652                                         /* FIXME: This should be a managed pointer */
8653                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8654
8655                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8656                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8657                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8658                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8659                                         addr = mono_emit_jit_icall (cfg,
8660                                                                                                 mono_helper_compile_generic_method, iargs);
8661
8662                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8663
8664                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8665                                 }
8666
8667                                 goto call_end;
8668                         }
8669
8670                         /*
8671                          * Implement a workaround for the inherent races involved in locking:
8672                          * Monitor.Enter ()
8673                          * try {
8674                          * } finally {
8675                          *    Monitor.Exit ()
8676                          * }
8677                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8678                          * try block, the Exit () won't be executed, see:
8679                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8680                          * To work around this, we extend such try blocks to include the last x bytes
8681                          * of the Monitor.Enter () call.
8682                          */
8683                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8684                                 MonoBasicBlock *tbb;
8685
8686                                 GET_BBLOCK (cfg, tbb, ip + 5);
8687                                 /*
8688                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8689                                  * from Monitor.Enter like ArgumentNullException.
8690                                  */
8691                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8692                                         /* Mark this bblock as needing to be extended */
8693                                         tbb->extend_try_block = TRUE;
8694                                 }
8695                         }
8696
8697                         /* Conversion to a JIT intrinsic */
8698                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8699                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8700                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8701                                         emit_widen = FALSE;
8702                                 }
8703                                 goto call_end;
8704                         }
8705                         CHECK_CFG_ERROR;
8706
8707                         /* Inlining */
8708                         if ((cfg->opt & MONO_OPT_INLINE) &&
8709                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8710                             mono_method_check_inlining (cfg, cmethod)) {
8711                                 int costs;
8712                                 gboolean always = FALSE;
8713
8714                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8715                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8716                                         /* Prevent inlining of methods that call wrappers */
8717                                         INLINE_FAILURE ("wrapper call");
8718                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8719                                         always = TRUE;
8720                                 }
8721
8722                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8723                                 if (costs) {
8724                                         cfg->real_offset += 5;
8725
8726                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8727                                                 /* *sp is already set by inline_method */
8728                                                 sp++;
8729                                                 push_res = FALSE;
8730                                         }
8731
8732                                         inline_costs += costs;
8733
8734                                         goto call_end;
8735                                 }
8736                         }
8737
8738                         /* Tail recursion elimination */
8739                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8740                                 gboolean has_vtargs = FALSE;
8741                                 int i;
8742
8743                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8744                                 INLINE_FAILURE ("tail call");
8745
8746                                 /* keep it simple */
8747                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8748                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8749                                                 has_vtargs = TRUE;
8750                                 }
8751
8752                                 if (!has_vtargs) {
8753                                         if (need_seq_point) {
8754                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8755                                                 need_seq_point = FALSE;
8756                                         }
8757                                         for (i = 0; i < n; ++i)
8758                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8759                                         MONO_INST_NEW (cfg, ins, OP_BR);
8760                                         MONO_ADD_INS (cfg->cbb, ins);
8761                                         tblock = start_bblock->out_bb [0];
8762                                         link_bblock (cfg, cfg->cbb, tblock);
8763                                         ins->inst_target_bb = tblock;
8764                                         start_new_bblock = 1;
8765
8766                                         /* skip the CEE_RET, too */
8767                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8768                                                 skip_ret = TRUE;
8769                                         push_res = FALSE;
8770                                         goto call_end;
8771                                 }
8772                         }
8773
8774                         inline_costs += 10 * num_calls++;
8775
8776                         /*
8777                          * Synchronized wrappers.
8778                          * Its hard to determine where to replace a method with its synchronized
8779                          * wrapper without causing an infinite recursion. The current solution is
8780                          * to add the synchronized wrapper in the trampolines, and to
8781                          * change the called method to a dummy wrapper, and resolve that wrapper
8782                          * to the real method in mono_jit_compile_method ().
8783                          */
8784                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8785                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8786                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8787                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8788                         }
8789
8790                         /*
8791                          * Making generic calls out of gsharedvt methods.
8792                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8793                          * patching gshared method addresses into a gsharedvt method.
8794                          */
8795                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8796                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8797                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8798                                 MonoRgctxInfoType info_type;
8799
8800                                 if (virtual_) {
8801                                         //if (mono_class_is_interface (cmethod->klass))
8802                                                 //GSHAREDVT_FAILURE (*ip);
8803                                         // disable for possible remoting calls
8804                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8805                                                 GSHAREDVT_FAILURE (*ip);
8806                                         if (fsig->generic_param_count) {
8807                                                 /* virtual generic call */
8808                                                 g_assert (!imt_arg);
8809                                                 /* Same as the virtual generic case above */
8810                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8811                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8812                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8813                                                 vtable_arg = NULL;
8814                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8815                                                 /* This can happen when we call a fully instantiated iface method */
8816                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8817                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8818                                                 vtable_arg = NULL;
8819                                         }
8820                                 }
8821
8822                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8823                                         keep_this_alive = sp [0];
8824
8825                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8826                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8827                                 else
8828                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8829                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8830
8831                                 if (cfg->llvm_only) {
8832                                         // FIXME: Avoid initializing vtable_arg
8833                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8834                                 } else {
8835                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8836                                 }
8837                                 goto call_end;
8838                         }
8839
8840                         /* Generic sharing */
8841
8842                         /*
8843                          * Use this if the callee is gsharedvt sharable too, since
8844                          * at runtime we might find an instantiation so the call cannot
8845                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8846                          */
8847                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8848                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8849                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8850                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8851                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8852                                 INLINE_FAILURE ("gshared");
8853
8854                                 g_assert (cfg->gshared && cmethod);
8855                                 g_assert (!addr);
8856
8857                                 /*
8858                                  * We are compiling a call to a
8859                                  * generic method from shared code,
8860                                  * which means that we have to look up
8861                                  * the method in the rgctx and do an
8862                                  * indirect call.
8863                                  */
8864                                 if (fsig->hasthis)
8865                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8866
8867                                 if (cfg->llvm_only) {
8868                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8869                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8870                                         else
8871                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8872                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8873                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8874                                 } else {
8875                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8876                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8877                                 }
8878                                 goto call_end;
8879                         }
8880
8881                         /* Direct calls to icalls */
8882                         if (direct_icall) {
8883                                 MonoMethod *wrapper;
8884                                 int costs;
8885
8886                                 /* Inline the wrapper */
8887                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8888
8889                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8890                                 g_assert (costs > 0);
8891                                 cfg->real_offset += 5;
8892
8893                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8894                                         /* *sp is already set by inline_method */
8895                                         sp++;
8896                                         push_res = FALSE;
8897                                 }
8898
8899                                 inline_costs += costs;
8900
8901                                 goto call_end;
8902                         }
8903
8904                         /* Array methods */
8905                         if (array_rank) {
8906                                 MonoInst *addr;
8907
8908                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8909                                         MonoInst *val = sp [fsig->param_count];
8910
8911                                         if (val->type == STACK_OBJ) {
8912                                                 MonoInst *iargs [2];
8913
8914                                                 iargs [0] = sp [0];
8915                                                 iargs [1] = val;
8916
8917                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8918                                         }
8919
8920                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8921                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8922                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8923                                                 mini_emit_write_barrier (cfg, addr, val);
8924                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8925                                                 GSHAREDVT_FAILURE (*ip);
8926                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8927                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8928
8929                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8930                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8931                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8932                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8933                                         CHECK_TYPELOAD (cmethod->klass);
8934
8935                                         readonly = FALSE;
8936                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8937                                         ins = addr;
8938                                 } else {
8939                                         g_assert_not_reached ();
8940                                 }
8941
8942                                 emit_widen = FALSE;
8943                                 goto call_end;
8944                         }
8945
8946                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
8947                         if (ins)
8948                                 goto call_end;
8949
8950                         /* Tail prefix / tail call optimization */
8951
8952                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8953                         /* FIXME: runtime generic context pointer for jumps? */
8954                         /* FIXME: handle this for generic sharing eventually */
8955                         if ((ins_flag & MONO_INST_TAILCALL) &&
8956                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
8957                                 supported_tail_call = TRUE;
8958
8959                         if (supported_tail_call) {
8960                                 MonoCallInst *call;
8961
8962                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8963                                 INLINE_FAILURE ("tail call");
8964
8965                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8966
8967                                 if (cfg->backend->have_op_tail_call) {
8968                                         /* Handle tail calls similarly to normal calls */
8969                                         tail_call = TRUE;
8970                                 } else {
8971                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8972
8973                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8974                                         call->tail_call = TRUE;
8975                                         call->method = cmethod;
8976                                         call->signature = mono_method_signature (cmethod);
8977
8978                                         /*
8979                                          * We implement tail calls by storing the actual arguments into the
8980                                          * argument variables, then emitting a CEE_JMP.
8981                                          */
8982                                         for (i = 0; i < n; ++i) {
8983                                                 /* Prevent argument from being register allocated */
8984                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
8985                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8986                                         }
8987                                         ins = (MonoInst*)call;
8988                                         ins->inst_p0 = cmethod;
8989                                         ins->inst_p1 = arg_array [0];
8990                                         MONO_ADD_INS (cfg->cbb, ins);
8991                                         link_bblock (cfg, cfg->cbb, end_bblock);
8992                                         start_new_bblock = 1;
8993
8994                                         // FIXME: Eliminate unreachable epilogs
8995
8996                                         /*
8997                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
8998                                          * only reachable from this call.
8999                                          */
9000                                         GET_BBLOCK (cfg, tblock, ip + 5);
9001                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9002                                                 skip_ret = TRUE;
9003                                         push_res = FALSE;
9004
9005                                         goto call_end;
9006                                 }
9007                         }
9008
9009                         /*
9010                          * Virtual calls in llvm-only mode.
9011                          */
9012                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9013                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9014                                 goto call_end;
9015                         }
9016
9017                         /* Common call */
9018                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9019                                 INLINE_FAILURE ("call");
9020                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9021                                                                                           imt_arg, vtable_arg);
9022
9023                         if (tail_call && !cfg->llvm_only) {
9024                                 link_bblock (cfg, cfg->cbb, end_bblock);
9025                                 start_new_bblock = 1;
9026
9027                                 // FIXME: Eliminate unreachable epilogs
9028
9029                                 /*
9030                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9031                                  * only reachable from this call.
9032                                  */
9033                                 GET_BBLOCK (cfg, tblock, ip + 5);
9034                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9035                                         skip_ret = TRUE;
9036                                 push_res = FALSE;
9037                         }
9038
9039                         call_end:
9040
9041                         /* End of call, INS should contain the result of the call, if any */
9042
9043                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9044                                 g_assert (ins);
9045                                 if (emit_widen)
9046                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9047                                 else
9048                                         *sp++ = ins;
9049                         }
9050
9051                         if (keep_this_alive) {
9052                                 MonoInst *dummy_use;
9053
9054                                 /* See mono_emit_method_call_full () */
9055                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9056                         }
9057
9058                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9059                                 /*
9060                                  * Clang can convert these calls to tail calls which screw up the stack
9061                                  * walk. This happens even when the -fno-optimize-sibling-calls
9062                                  * option is passed to clang.
9063                                  * Work around this by emitting a dummy call.
9064                                  */
9065                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9066                         }
9067
9068                         CHECK_CFG_EXCEPTION;
9069
9070                         ip += 5;
9071                         if (skip_ret) {
9072                                 g_assert (*ip == CEE_RET);
9073                                 ip += 1;
9074                         }
9075                         ins_flag = 0;
9076                         constrained_class = NULL;
9077                         if (need_seq_point)
9078                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9079                         break;
9080                 }
9081                 case CEE_RET:
9082                         if (cfg->method != method) {
9083                                 /* return from inlined method */
9084                                 /*
9085                                  * If in_count == 0, that means the ret is unreachable due to
9086                                  * being preceeded by a throw. In that case, inline_method () will
9087                                  * handle setting the return value
9088                                  * (test case: test_0_inline_throw ()).
9089                                  */
9090                                 if (return_var && cfg->cbb->in_count) {
9091                                         MonoType *ret_type = mono_method_signature (method)->ret;
9092
9093                                         MonoInst *store;
9094                                         CHECK_STACK (1);
9095                                         --sp;
9096
9097                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9098                                                 UNVERIFIED;
9099
9100                                         //g_assert (returnvar != -1);
9101                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9102                                         cfg->ret_var_set = TRUE;
9103                                 }
9104                         } else {
9105                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9106
9107                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9108                                         emit_pop_lmf (cfg);
9109
9110                                 if (cfg->ret) {
9111                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9112
9113                                         if (seq_points && !sym_seq_points) {
9114                                                 /*
9115                                                  * Place a seq point here too even through the IL stack is not
9116                                                  * empty, so a step over on
9117                                                  * call <FOO>
9118                                                  * ret
9119                                                  * will work correctly.
9120                                                  */
9121                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9122                                                 MONO_ADD_INS (cfg->cbb, ins);
9123                                         }
9124
9125                                         g_assert (!return_var);
9126                                         CHECK_STACK (1);
9127                                         --sp;
9128
9129                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9130                                                 UNVERIFIED;
9131
9132                                         emit_setret (cfg, *sp);
9133                                 }
9134                         }
9135                         if (sp != stack_start)
9136                                 UNVERIFIED;
9137                         MONO_INST_NEW (cfg, ins, OP_BR);
9138                         ip++;
9139                         ins->inst_target_bb = end_bblock;
9140                         MONO_ADD_INS (cfg->cbb, ins);
9141                         link_bblock (cfg, cfg->cbb, end_bblock);
9142                         start_new_bblock = 1;
9143                         break;
9144                 case CEE_BR_S:
9145                         CHECK_OPSIZE (2);
9146                         MONO_INST_NEW (cfg, ins, OP_BR);
9147                         ip++;
9148                         target = ip + 1 + (signed char)(*ip);
9149                         ++ip;
9150                         GET_BBLOCK (cfg, tblock, target);
9151                         link_bblock (cfg, cfg->cbb, tblock);
9152                         ins->inst_target_bb = tblock;
9153                         if (sp != stack_start) {
9154                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9155                                 sp = stack_start;
9156                                 CHECK_UNVERIFIABLE (cfg);
9157                         }
9158                         MONO_ADD_INS (cfg->cbb, ins);
9159                         start_new_bblock = 1;
9160                         inline_costs += BRANCH_COST;
9161                         break;
9162                 case CEE_BEQ_S:
9163                 case CEE_BGE_S:
9164                 case CEE_BGT_S:
9165                 case CEE_BLE_S:
9166                 case CEE_BLT_S:
9167                 case CEE_BNE_UN_S:
9168                 case CEE_BGE_UN_S:
9169                 case CEE_BGT_UN_S:
9170                 case CEE_BLE_UN_S:
9171                 case CEE_BLT_UN_S:
9172                         CHECK_OPSIZE (2);
9173                         CHECK_STACK (2);
9174                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9175                         ip++;
9176                         target = ip + 1 + *(signed char*)ip;
9177                         ip++;
9178
9179                         ADD_BINCOND (NULL);
9180
9181                         sp = stack_start;
9182                         inline_costs += BRANCH_COST;
9183                         break;
9184                 case CEE_BR:
9185                         CHECK_OPSIZE (5);
9186                         MONO_INST_NEW (cfg, ins, OP_BR);
9187                         ip++;
9188
9189                         target = ip + 4 + (gint32)read32(ip);
9190                         ip += 4;
9191                         GET_BBLOCK (cfg, tblock, target);
9192                         link_bblock (cfg, cfg->cbb, tblock);
9193                         ins->inst_target_bb = tblock;
9194                         if (sp != stack_start) {
9195                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9196                                 sp = stack_start;
9197                                 CHECK_UNVERIFIABLE (cfg);
9198                         }
9199
9200                         MONO_ADD_INS (cfg->cbb, ins);
9201
9202                         start_new_bblock = 1;
9203                         inline_costs += BRANCH_COST;
9204                         break;
9205                 case CEE_BRFALSE_S:
9206                 case CEE_BRTRUE_S:
9207                 case CEE_BRFALSE:
9208                 case CEE_BRTRUE: {
9209                         MonoInst *cmp;
9210                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9211                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9212                         guint32 opsize = is_short ? 1 : 4;
9213
9214                         CHECK_OPSIZE (opsize);
9215                         CHECK_STACK (1);
9216                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9217                                 UNVERIFIED;
9218                         ip ++;
9219                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9220                         ip += opsize;
9221
9222                         sp--;
9223
9224                         GET_BBLOCK (cfg, tblock, target);
9225                         link_bblock (cfg, cfg->cbb, tblock);
9226                         GET_BBLOCK (cfg, tblock, ip);
9227                         link_bblock (cfg, cfg->cbb, tblock);
9228
9229                         if (sp != stack_start) {
9230                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9231                                 CHECK_UNVERIFIABLE (cfg);
9232                         }
9233
9234                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9235                         cmp->sreg1 = sp [0]->dreg;
9236                         type_from_op (cfg, cmp, sp [0], NULL);
9237                         CHECK_TYPE (cmp);
9238
9239 #if SIZEOF_REGISTER == 4
9240                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9241                                 /* Convert it to OP_LCOMPARE */
9242                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9243                                 ins->type = STACK_I8;
9244                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9245                                 ins->inst_l = 0;
9246                                 MONO_ADD_INS (cfg->cbb, ins);
9247                                 cmp->opcode = OP_LCOMPARE;
9248                                 cmp->sreg2 = ins->dreg;
9249                         }
9250 #endif
9251                         MONO_ADD_INS (cfg->cbb, cmp);
9252
9253                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9254                         type_from_op (cfg, ins, sp [0], NULL);
9255                         MONO_ADD_INS (cfg->cbb, ins);
9256                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9257                         GET_BBLOCK (cfg, tblock, target);
9258                         ins->inst_true_bb = tblock;
9259                         GET_BBLOCK (cfg, tblock, ip);
9260                         ins->inst_false_bb = tblock;
9261                         start_new_bblock = 2;
9262
9263                         sp = stack_start;
9264                         inline_costs += BRANCH_COST;
9265                         break;
9266                 }
9267                 case CEE_BEQ:
9268                 case CEE_BGE:
9269                 case CEE_BGT:
9270                 case CEE_BLE:
9271                 case CEE_BLT:
9272                 case CEE_BNE_UN:
9273                 case CEE_BGE_UN:
9274                 case CEE_BGT_UN:
9275                 case CEE_BLE_UN:
9276                 case CEE_BLT_UN:
9277                         CHECK_OPSIZE (5);
9278                         CHECK_STACK (2);
9279                         MONO_INST_NEW (cfg, ins, *ip);
9280                         ip++;
9281                         target = ip + 4 + (gint32)read32(ip);
9282                         ip += 4;
9283
9284                         ADD_BINCOND (NULL);
9285
9286                         sp = stack_start;
9287                         inline_costs += BRANCH_COST;
9288                         break;
9289                 case CEE_SWITCH: {
9290                         MonoInst *src1;
9291                         MonoBasicBlock **targets;
9292                         MonoBasicBlock *default_bblock;
9293                         MonoJumpInfoBBTable *table;
9294                         int offset_reg = alloc_preg (cfg);
9295                         int target_reg = alloc_preg (cfg);
9296                         int table_reg = alloc_preg (cfg);
9297                         int sum_reg = alloc_preg (cfg);
9298                         gboolean use_op_switch;
9299
9300                         CHECK_OPSIZE (5);
9301                         CHECK_STACK (1);
9302                         n = read32 (ip + 1);
9303                         --sp;
9304                         src1 = sp [0];
9305                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9306                                 UNVERIFIED;
9307
9308                         ip += 5;
9309                         CHECK_OPSIZE (n * sizeof (guint32));
9310                         target = ip + n * sizeof (guint32);
9311
9312                         GET_BBLOCK (cfg, default_bblock, target);
9313                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9314
9315                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9316                         for (i = 0; i < n; ++i) {
9317                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9318                                 targets [i] = tblock;
9319                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9320                                 ip += 4;
9321                         }
9322
9323                         if (sp != stack_start) {
9324                                 /*
9325                                  * Link the current bb with the targets as well, so handle_stack_args
9326                                  * will set their in_stack correctly.
9327                                  */
9328                                 link_bblock (cfg, cfg->cbb, default_bblock);
9329                                 for (i = 0; i < n; ++i)
9330                                         link_bblock (cfg, cfg->cbb, targets [i]);
9331
9332                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9333                                 sp = stack_start;
9334                                 CHECK_UNVERIFIABLE (cfg);
9335
9336                                 /* Undo the links */
9337                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9338                                 for (i = 0; i < n; ++i)
9339                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9340                         }
9341
9342                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9343                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9344
9345                         for (i = 0; i < n; ++i)
9346                                 link_bblock (cfg, cfg->cbb, targets [i]);
9347
9348                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9349                         table->table = targets;
9350                         table->table_size = n;
9351
9352                         use_op_switch = FALSE;
9353 #ifdef TARGET_ARM
9354                         /* ARM implements SWITCH statements differently */
9355                         /* FIXME: Make it use the generic implementation */
9356                         if (!cfg->compile_aot)
9357                                 use_op_switch = TRUE;
9358 #endif
9359
9360                         if (COMPILE_LLVM (cfg))
9361                                 use_op_switch = TRUE;
9362
9363                         cfg->cbb->has_jump_table = 1;
9364
9365                         if (use_op_switch) {
9366                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9367                                 ins->sreg1 = src1->dreg;
9368                                 ins->inst_p0 = table;
9369                                 ins->inst_many_bb = targets;
9370                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9371                                 MONO_ADD_INS (cfg->cbb, ins);
9372                         } else {
9373                                 if (sizeof (gpointer) == 8)
9374                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9375                                 else
9376                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9377
9378 #if SIZEOF_REGISTER == 8
9379                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9380                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9381 #endif
9382
9383                                 if (cfg->compile_aot) {
9384                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9385                                 } else {
9386                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9387                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9388                                         ins->inst_p0 = table;
9389                                         ins->dreg = table_reg;
9390                                         MONO_ADD_INS (cfg->cbb, ins);
9391                                 }
9392
9393                                 /* FIXME: Use load_memindex */
9394                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9395                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9396                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9397                         }
9398                         start_new_bblock = 1;
9399                         inline_costs += (BRANCH_COST * 2);
9400                         break;
9401                 }
9402                 case CEE_LDIND_I1:
9403                 case CEE_LDIND_U1:
9404                 case CEE_LDIND_I2:
9405                 case CEE_LDIND_U2:
9406                 case CEE_LDIND_I4:
9407                 case CEE_LDIND_U4:
9408                 case CEE_LDIND_I8:
9409                 case CEE_LDIND_I:
9410                 case CEE_LDIND_R4:
9411                 case CEE_LDIND_R8:
9412                 case CEE_LDIND_REF:
9413                         CHECK_STACK (1);
9414                         --sp;
9415
9416                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9417                         *sp++ = ins;
9418                         ins_flag = 0;
9419                         ++ip;
9420                         break;
9421                 case CEE_STIND_REF:
9422                 case CEE_STIND_I1:
9423                 case CEE_STIND_I2:
9424                 case CEE_STIND_I4:
9425                 case CEE_STIND_I8:
9426                 case CEE_STIND_R4:
9427                 case CEE_STIND_R8:
9428                 case CEE_STIND_I:
9429                         CHECK_STACK (2);
9430                         sp -= 2;
9431
9432                         if (ins_flag & MONO_INST_VOLATILE) {
9433                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9434                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9435                         }
9436
9437                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9438                         ins->flags |= ins_flag;
9439                         ins_flag = 0;
9440
9441                         MONO_ADD_INS (cfg->cbb, ins);
9442
9443                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9444                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9445
9446                         inline_costs += 1;
9447                         ++ip;
9448                         break;
9449
9450                 case CEE_MUL:
9451                         CHECK_STACK (2);
9452
9453                         MONO_INST_NEW (cfg, ins, (*ip));
9454                         sp -= 2;
9455                         ins->sreg1 = sp [0]->dreg;
9456                         ins->sreg2 = sp [1]->dreg;
9457                         type_from_op (cfg, ins, sp [0], sp [1]);
9458                         CHECK_TYPE (ins);
9459                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9460
9461                         /* Use the immediate opcodes if possible */
9462                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9463                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9464                                 if (imm_opcode != -1) {
9465                                         ins->opcode = imm_opcode;
9466                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9467                                         ins->sreg2 = -1;
9468
9469                                         NULLIFY_INS (sp [1]);
9470                                 }
9471                         }
9472
9473                         MONO_ADD_INS ((cfg)->cbb, (ins));
9474
9475                         *sp++ = mono_decompose_opcode (cfg, ins);
9476                         ip++;
9477                         break;
9478                 case CEE_ADD:
9479                 case CEE_SUB:
9480                 case CEE_DIV:
9481                 case CEE_DIV_UN:
9482                 case CEE_REM:
9483                 case CEE_REM_UN:
9484                 case CEE_AND:
9485                 case CEE_OR:
9486                 case CEE_XOR:
9487                 case CEE_SHL:
9488                 case CEE_SHR:
9489                 case CEE_SHR_UN:
9490                         CHECK_STACK (2);
9491
9492                         MONO_INST_NEW (cfg, ins, (*ip));
9493                         sp -= 2;
9494                         ins->sreg1 = sp [0]->dreg;
9495                         ins->sreg2 = sp [1]->dreg;
9496                         type_from_op (cfg, ins, sp [0], sp [1]);
9497                         CHECK_TYPE (ins);
9498                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9499                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9500
9501                         /* FIXME: Pass opcode to is_inst_imm */
9502
9503                         /* Use the immediate opcodes if possible */
9504                         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)) {
9505                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9506                                 if (imm_opcode != -1) {
9507                                         ins->opcode = imm_opcode;
9508                                         if (sp [1]->opcode == OP_I8CONST) {
9509 #if SIZEOF_REGISTER == 8
9510                                                 ins->inst_imm = sp [1]->inst_l;
9511 #else
9512                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9513                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9514 #endif
9515                                         }
9516                                         else
9517                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9518                                         ins->sreg2 = -1;
9519
9520                                         /* Might be followed by an instruction added by add_widen_op */
9521                                         if (sp [1]->next == NULL)
9522                                                 NULLIFY_INS (sp [1]);
9523                                 }
9524                         }
9525                         MONO_ADD_INS ((cfg)->cbb, (ins));
9526
9527                         *sp++ = mono_decompose_opcode (cfg, ins);
9528                         ip++;
9529                         break;
9530                 case CEE_NEG:
9531                 case CEE_NOT:
9532                 case CEE_CONV_I1:
9533                 case CEE_CONV_I2:
9534                 case CEE_CONV_I4:
9535                 case CEE_CONV_R4:
9536                 case CEE_CONV_R8:
9537                 case CEE_CONV_U4:
9538                 case CEE_CONV_I8:
9539                 case CEE_CONV_U8:
9540                 case CEE_CONV_OVF_I8:
9541                 case CEE_CONV_OVF_U8:
9542                 case CEE_CONV_R_UN:
9543                         CHECK_STACK (1);
9544
9545                         /* Special case this earlier so we have long constants in the IR */
9546                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9547                                 int data = sp [-1]->inst_c0;
9548                                 sp [-1]->opcode = OP_I8CONST;
9549                                 sp [-1]->type = STACK_I8;
9550 #if SIZEOF_REGISTER == 8
9551                                 if ((*ip) == CEE_CONV_U8)
9552                                         sp [-1]->inst_c0 = (guint32)data;
9553                                 else
9554                                         sp [-1]->inst_c0 = data;
9555 #else
9556                                 sp [-1]->inst_ls_word = data;
9557                                 if ((*ip) == CEE_CONV_U8)
9558                                         sp [-1]->inst_ms_word = 0;
9559                                 else
9560                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9561 #endif
9562                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9563                         }
9564                         else {
9565                                 ADD_UNOP (*ip);
9566                         }
9567                         ip++;
9568                         break;
9569                 case CEE_CONV_OVF_I4:
9570                 case CEE_CONV_OVF_I1:
9571                 case CEE_CONV_OVF_I2:
9572                 case CEE_CONV_OVF_I:
9573                 case CEE_CONV_OVF_U:
9574                         CHECK_STACK (1);
9575
9576                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9577                                 ADD_UNOP (CEE_CONV_OVF_I8);
9578                                 ADD_UNOP (*ip);
9579                         } else {
9580                                 ADD_UNOP (*ip);
9581                         }
9582                         ip++;
9583                         break;
9584                 case CEE_CONV_OVF_U1:
9585                 case CEE_CONV_OVF_U2:
9586                 case CEE_CONV_OVF_U4:
9587                         CHECK_STACK (1);
9588
9589                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9590                                 ADD_UNOP (CEE_CONV_OVF_U8);
9591                                 ADD_UNOP (*ip);
9592                         } else {
9593                                 ADD_UNOP (*ip);
9594                         }
9595                         ip++;
9596                         break;
9597                 case CEE_CONV_OVF_I1_UN:
9598                 case CEE_CONV_OVF_I2_UN:
9599                 case CEE_CONV_OVF_I4_UN:
9600                 case CEE_CONV_OVF_I8_UN:
9601                 case CEE_CONV_OVF_U1_UN:
9602                 case CEE_CONV_OVF_U2_UN:
9603                 case CEE_CONV_OVF_U4_UN:
9604                 case CEE_CONV_OVF_U8_UN:
9605                 case CEE_CONV_OVF_I_UN:
9606                 case CEE_CONV_OVF_U_UN:
9607                 case CEE_CONV_U2:
9608                 case CEE_CONV_U1:
9609                 case CEE_CONV_I:
9610                 case CEE_CONV_U:
9611                         CHECK_STACK (1);
9612                         ADD_UNOP (*ip);
9613                         CHECK_CFG_EXCEPTION;
9614                         ip++;
9615                         break;
9616                 case CEE_ADD_OVF:
9617                 case CEE_ADD_OVF_UN:
9618                 case CEE_MUL_OVF:
9619                 case CEE_MUL_OVF_UN:
9620                 case CEE_SUB_OVF:
9621                 case CEE_SUB_OVF_UN:
9622                         CHECK_STACK (2);
9623                         ADD_BINOP (*ip);
9624                         ip++;
9625                         break;
9626                 case CEE_CPOBJ:
9627                         GSHAREDVT_FAILURE (*ip);
9628                         CHECK_OPSIZE (5);
9629                         CHECK_STACK (2);
9630                         token = read32 (ip + 1);
9631                         klass = mini_get_class (method, token, generic_context);
9632                         CHECK_TYPELOAD (klass);
9633                         sp -= 2;
9634                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9635                         ins_flag = 0;
9636                         ip += 5;
9637                         break;
9638                 case CEE_LDOBJ: {
9639                         int loc_index = -1;
9640                         int stloc_len = 0;
9641
9642                         CHECK_OPSIZE (5);
9643                         CHECK_STACK (1);
9644                         --sp;
9645                         token = read32 (ip + 1);
9646                         klass = mini_get_class (method, token, generic_context);
9647                         CHECK_TYPELOAD (klass);
9648
9649                         /* Optimize the common ldobj+stloc combination */
9650                         switch (ip [5]) {
9651                         case CEE_STLOC_S:
9652                                 loc_index = ip [6];
9653                                 stloc_len = 2;
9654                                 break;
9655                         case CEE_STLOC_0:
9656                         case CEE_STLOC_1:
9657                         case CEE_STLOC_2:
9658                         case CEE_STLOC_3:
9659                                 loc_index = ip [5] - CEE_STLOC_0;
9660                                 stloc_len = 1;
9661                                 break;
9662                         default:
9663                                 break;
9664                         }
9665
9666                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9667                                 CHECK_LOCAL (loc_index);
9668
9669                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9670                                 ins->dreg = cfg->locals [loc_index]->dreg;
9671                                 ins->flags |= ins_flag;
9672                                 ip += 5;
9673                                 ip += stloc_len;
9674                                 if (ins_flag & MONO_INST_VOLATILE) {
9675                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9676                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9677                                 }
9678                                 ins_flag = 0;
9679                                 break;
9680                         }
9681
9682                         /* Optimize the ldobj+stobj combination */
9683                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9684                                 CHECK_STACK (1);
9685
9686                                 sp --;
9687
9688                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9689
9690                                 ip += 5 + 5;
9691                                 ins_flag = 0;
9692                                 break;
9693                         }
9694
9695                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9696                         *sp++ = ins;
9697
9698                         ip += 5;
9699                         ins_flag = 0;
9700                         inline_costs += 1;
9701                         break;
9702                 }
9703                 case CEE_LDSTR:
9704                         CHECK_STACK_OVF (1);
9705                         CHECK_OPSIZE (5);
9706                         n = read32 (ip + 1);
9707
9708                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9709                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9710                                 ins->type = STACK_OBJ;
9711                                 *sp = ins;
9712                         }
9713                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9714                                 MonoInst *iargs [1];
9715                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9716
9717                                 if (cfg->compile_aot)
9718                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9719                                 else
9720                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9721                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9722                         } else {
9723                                 if (cfg->opt & MONO_OPT_SHARED) {
9724                                         MonoInst *iargs [3];
9725
9726                                         if (cfg->compile_aot) {
9727                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9728                                         }
9729                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9730                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9731                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9732                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9733                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9734                                         CHECK_CFG_ERROR;
9735                                 } else {
9736                                         if (cfg->cbb->out_of_line) {
9737                                                 MonoInst *iargs [2];
9738
9739                                                 if (image == mono_defaults.corlib) {
9740                                                         /*
9741                                                          * Avoid relocations in AOT and save some space by using a
9742                                                          * version of helper_ldstr specialized to mscorlib.
9743                                                          */
9744                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9745                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9746                                                 } else {
9747                                                         /* Avoid creating the string object */
9748                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9749                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9750                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9751                                                 }
9752                                         }
9753                                         else
9754                                         if (cfg->compile_aot) {
9755                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9756                                                 *sp = ins;
9757                                                 MONO_ADD_INS (cfg->cbb, ins);
9758                                         }
9759                                         else {
9760                                                 NEW_PCONST (cfg, ins, NULL);
9761                                                 ins->type = STACK_OBJ;
9762                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9763                                                 CHECK_CFG_ERROR;
9764
9765                                                 if (!ins->inst_p0)
9766                                                         OUT_OF_MEMORY_FAILURE;
9767
9768                                                 *sp = ins;
9769                                                 MONO_ADD_INS (cfg->cbb, ins);
9770                                         }
9771                                 }
9772                         }
9773
9774                         sp++;
9775                         ip += 5;
9776                         break;
9777                 case CEE_NEWOBJ: {
9778                         MonoInst *iargs [2];
9779                         MonoMethodSignature *fsig;
9780                         MonoInst this_ins;
9781                         MonoInst *alloc;
9782                         MonoInst *vtable_arg = NULL;
9783
9784                         CHECK_OPSIZE (5);
9785                         token = read32 (ip + 1);
9786                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9787                         CHECK_CFG_ERROR;
9788
9789                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9790                         CHECK_CFG_ERROR;
9791
9792                         mono_save_token_info (cfg, image, token, cmethod);
9793
9794                         if (!mono_class_init (cmethod->klass))
9795                                 TYPE_LOAD_ERROR (cmethod->klass);
9796
9797                         context_used = mini_method_check_context_used (cfg, cmethod);
9798
9799                         if (!dont_verify && !cfg->skip_visibility) {
9800                                 MonoMethod *cil_method = cmethod;
9801                                 MonoMethod *target_method = cil_method;
9802
9803                                 if (method->is_inflated) {
9804                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9805                                         CHECK_CFG_ERROR;
9806                                 }
9807
9808                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9809                                         !mono_method_can_access_method (method, cil_method))
9810                                         emit_method_access_failure (cfg, method, cil_method);
9811                         }
9812
9813                         if (mono_security_core_clr_enabled ())
9814                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9815
9816                         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)) {
9817                                 emit_class_init (cfg, cmethod->klass);
9818                                 CHECK_TYPELOAD (cmethod->klass);
9819                         }
9820
9821                         /*
9822                         if (cfg->gsharedvt) {
9823                                 if (mini_is_gsharedvt_variable_signature (sig))
9824                                         GSHAREDVT_FAILURE (*ip);
9825                         }
9826                         */
9827
9828                         n = fsig->param_count;
9829                         CHECK_STACK (n);
9830
9831                         /*
9832                          * Generate smaller code for the common newobj <exception> instruction in
9833                          * argument checking code.
9834                          */
9835                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9836                                 is_exception_class (cmethod->klass) && n <= 2 &&
9837                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9838                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9839                                 MonoInst *iargs [3];
9840
9841                                 sp -= n;
9842
9843                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9844                                 switch (n) {
9845                                 case 0:
9846                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9847                                         break;
9848                                 case 1:
9849                                         iargs [1] = sp [0];
9850                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9851                                         break;
9852                                 case 2:
9853                                         iargs [1] = sp [0];
9854                                         iargs [2] = sp [1];
9855                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9856                                         break;
9857                                 default:
9858                                         g_assert_not_reached ();
9859                                 }
9860
9861                                 ip += 5;
9862                                 inline_costs += 5;
9863                                 break;
9864                         }
9865
9866                         /* move the args to allow room for 'this' in the first position */
9867                         while (n--) {
9868                                 --sp;
9869                                 sp [1] = sp [0];
9870                         }
9871
9872                         /* check_call_signature () requires sp[0] to be set */
9873                         this_ins.type = STACK_OBJ;
9874                         sp [0] = &this_ins;
9875                         if (check_call_signature (cfg, fsig, sp))
9876                                 UNVERIFIED;
9877
9878                         iargs [0] = NULL;
9879
9880                         if (mini_class_is_system_array (cmethod->klass)) {
9881                                 *sp = emit_get_rgctx_method (cfg, context_used,
9882                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9883
9884                                 /* Avoid varargs in the common case */
9885                                 if (fsig->param_count == 1)
9886                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9887                                 else if (fsig->param_count == 2)
9888                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9889                                 else if (fsig->param_count == 3)
9890                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9891                                 else if (fsig->param_count == 4)
9892                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9893                                 else
9894                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9895                         } else if (cmethod->string_ctor) {
9896                                 g_assert (!context_used);
9897                                 g_assert (!vtable_arg);
9898                                 /* we simply pass a null pointer */
9899                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9900                                 /* now call the string ctor */
9901                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9902                         } else {
9903                                 if (cmethod->klass->valuetype) {
9904                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9905                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9906                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9907
9908                                         alloc = NULL;
9909
9910                                         /*
9911                                          * The code generated by mini_emit_virtual_call () expects
9912                                          * iargs [0] to be a boxed instance, but luckily the vcall
9913                                          * will be transformed into a normal call there.
9914                                          */
9915                                 } else if (context_used) {
9916                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9917                                         *sp = alloc;
9918                                 } else {
9919                                         MonoVTable *vtable = NULL;
9920
9921                                         if (!cfg->compile_aot)
9922                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9923                                         CHECK_TYPELOAD (cmethod->klass);
9924
9925                                         /*
9926                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9927                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9928                                          * As a workaround, we call class cctors before allocating objects.
9929                                          */
9930                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9931                                                 emit_class_init (cfg, cmethod->klass);
9932                                                 if (cfg->verbose_level > 2)
9933                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9934                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9935                                         }
9936
9937                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9938                                         *sp = alloc;
9939                                 }
9940                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9941
9942                                 if (alloc)
9943                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9944
9945                                 /* Now call the actual ctor */
9946                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
9947                                 CHECK_CFG_EXCEPTION;
9948                         }
9949
9950                         if (alloc == NULL) {
9951                                 /* Valuetype */
9952                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9953                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9954                                 *sp++= ins;
9955                         } else {
9956                                 *sp++ = alloc;
9957                         }
9958
9959                         ip += 5;
9960                         inline_costs += 5;
9961                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
9962                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9963                         break;
9964                 }
9965                 case CEE_CASTCLASS:
9966                 case CEE_ISINST: {
9967                         CHECK_STACK (1);
9968                         --sp;
9969                         CHECK_OPSIZE (5);
9970                         token = read32 (ip + 1);
9971                         klass = mini_get_class (method, token, generic_context);
9972                         CHECK_TYPELOAD (klass);
9973                         if (sp [0]->type != STACK_OBJ)
9974                                 UNVERIFIED;
9975
9976                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
9977                         ins->dreg = alloc_preg (cfg);
9978                         ins->sreg1 = (*sp)->dreg;
9979                         ins->klass = klass;
9980                         ins->type = STACK_OBJ;
9981                         MONO_ADD_INS (cfg->cbb, ins);
9982
9983                         CHECK_CFG_EXCEPTION;
9984                         *sp++ = ins;
9985                         ip += 5;
9986
9987                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
9988                         break;
9989                 }
9990                 case CEE_UNBOX_ANY: {
9991                         MonoInst *res, *addr;
9992
9993                         CHECK_STACK (1);
9994                         --sp;
9995                         CHECK_OPSIZE (5);
9996                         token = read32 (ip + 1);
9997                         klass = mini_get_class (method, token, generic_context);
9998                         CHECK_TYPELOAD (klass);
9999
10000                         mono_save_token_info (cfg, image, token, klass);
10001
10002                         context_used = mini_class_check_context_used (cfg, klass);
10003
10004                         if (mini_is_gsharedvt_klass (klass)) {
10005                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10006                                 inline_costs += 2;
10007                         } else if (generic_class_is_reference_type (cfg, klass)) {
10008                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10009                                         EMIT_NEW_PCONST (cfg, res, NULL);
10010                                         res->type = STACK_OBJ;
10011                                 } else {
10012                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10013                                         res->dreg = alloc_preg (cfg);
10014                                         res->sreg1 = (*sp)->dreg;
10015                                         res->klass = klass;
10016                                         res->type = STACK_OBJ;
10017                                         MONO_ADD_INS (cfg->cbb, res);
10018                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10019                                 }
10020                         } else if (mono_class_is_nullable (klass)) {
10021                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10022                         } else {
10023                                 addr = handle_unbox (cfg, klass, sp, context_used);
10024                                 /* LDOBJ */
10025                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10026                                 res = ins;
10027                                 inline_costs += 2;
10028                         }
10029
10030                         *sp ++ = res;
10031                         ip += 5;
10032                         break;
10033                 }
10034                 case CEE_BOX: {
10035                         MonoInst *val;
10036                         MonoClass *enum_class;
10037                         MonoMethod *has_flag;
10038
10039                         CHECK_STACK (1);
10040                         --sp;
10041                         val = *sp;
10042                         CHECK_OPSIZE (5);
10043                         token = read32 (ip + 1);
10044                         klass = mini_get_class (method, token, generic_context);
10045                         CHECK_TYPELOAD (klass);
10046
10047                         mono_save_token_info (cfg, image, token, klass);
10048
10049                         context_used = mini_class_check_context_used (cfg, klass);
10050
10051                         if (generic_class_is_reference_type (cfg, klass)) {
10052                                 *sp++ = val;
10053                                 ip += 5;
10054                                 break;
10055                         }
10056
10057                         if (klass == mono_defaults.void_class)
10058                                 UNVERIFIED;
10059                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10060                                 UNVERIFIED;
10061                         /* frequent check in generic code: box (struct), brtrue */
10062
10063                         /*
10064                          * Look for:
10065                          *
10066                          *   <push int/long ptr>
10067                          *   <push int/long>
10068                          *   box MyFlags
10069                          *   constrained. MyFlags
10070                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10071                          *
10072                          * If we find this sequence and the operand types on box and constrained
10073                          * are equal, we can emit a specialized instruction sequence instead of
10074                          * the very slow HasFlag () call.
10075                          */
10076                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10077                             /* Cheap checks first. */
10078                             ip + 5 + 6 + 5 < end &&
10079                             ip [5] == CEE_PREFIX1 &&
10080                             ip [6] == CEE_CONSTRAINED_ &&
10081                             ip [11] == CEE_CALLVIRT &&
10082                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10083                             mono_class_is_enum (klass) &&
10084                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10085                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10086                             has_flag->klass == mono_defaults.enum_class &&
10087                             !strcmp (has_flag->name, "HasFlag") &&
10088                             has_flag->signature->hasthis &&
10089                             has_flag->signature->param_count == 1) {
10090                                 CHECK_TYPELOAD (enum_class);
10091
10092                                 if (enum_class == klass) {
10093                                         MonoInst *enum_this, *enum_flag;
10094
10095                                         ip += 5 + 6 + 5;
10096                                         --sp;
10097
10098                                         enum_this = sp [0];
10099                                         enum_flag = sp [1];
10100
10101                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10102                                         break;
10103                                 }
10104                         }
10105
10106                         // FIXME: LLVM can't handle the inconsistent bb linking
10107                         if (!mono_class_is_nullable (klass) &&
10108                                 !mini_is_gsharedvt_klass (klass) &&
10109                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10110                                 (ip [5] == CEE_BRTRUE ||
10111                                  ip [5] == CEE_BRTRUE_S ||
10112                                  ip [5] == CEE_BRFALSE ||
10113                                  ip [5] == CEE_BRFALSE_S)) {
10114                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10115                                 int dreg;
10116                                 MonoBasicBlock *true_bb, *false_bb;
10117
10118                                 ip += 5;
10119
10120                                 if (cfg->verbose_level > 3) {
10121                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10122                                         printf ("<box+brtrue opt>\n");
10123                                 }
10124
10125                                 switch (*ip) {
10126                                 case CEE_BRTRUE_S:
10127                                 case CEE_BRFALSE_S:
10128                                         CHECK_OPSIZE (2);
10129                                         ip++;
10130                                         target = ip + 1 + (signed char)(*ip);
10131                                         ip++;
10132                                         break;
10133                                 case CEE_BRTRUE:
10134                                 case CEE_BRFALSE:
10135                                         CHECK_OPSIZE (5);
10136                                         ip++;
10137                                         target = ip + 4 + (gint)(read32 (ip));
10138                                         ip += 4;
10139                                         break;
10140                                 default:
10141                                         g_assert_not_reached ();
10142                                 }
10143
10144                                 /*
10145                                  * We need to link both bblocks, since it is needed for handling stack
10146                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10147                                  * Branching to only one of them would lead to inconsistencies, so
10148                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10149                                  */
10150                                 GET_BBLOCK (cfg, true_bb, target);
10151                                 GET_BBLOCK (cfg, false_bb, ip);
10152
10153                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10154                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10155
10156                                 if (sp != stack_start) {
10157                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10158                                         sp = stack_start;
10159                                         CHECK_UNVERIFIABLE (cfg);
10160                                 }
10161
10162                                 if (COMPILE_LLVM (cfg)) {
10163                                         dreg = alloc_ireg (cfg);
10164                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10165                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10166
10167                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10168                                 } else {
10169                                         /* The JIT can't eliminate the iconst+compare */
10170                                         MONO_INST_NEW (cfg, ins, OP_BR);
10171                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10172                                         MONO_ADD_INS (cfg->cbb, ins);
10173                                 }
10174
10175                                 start_new_bblock = 1;
10176                                 break;
10177                         }
10178
10179                         *sp++ = handle_box (cfg, val, klass, context_used);
10180
10181                         CHECK_CFG_EXCEPTION;
10182                         ip += 5;
10183                         inline_costs += 1;
10184                         break;
10185                 }
10186                 case CEE_UNBOX: {
10187                         CHECK_STACK (1);
10188                         --sp;
10189                         CHECK_OPSIZE (5);
10190                         token = read32 (ip + 1);
10191                         klass = mini_get_class (method, token, generic_context);
10192                         CHECK_TYPELOAD (klass);
10193
10194                         mono_save_token_info (cfg, image, token, klass);
10195
10196                         context_used = mini_class_check_context_used (cfg, klass);
10197
10198                         if (mono_class_is_nullable (klass)) {
10199                                 MonoInst *val;
10200
10201                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10202                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10203
10204                                 *sp++= ins;
10205                         } else {
10206                                 ins = handle_unbox (cfg, klass, sp, context_used);
10207                                 *sp++ = ins;
10208                         }
10209                         ip += 5;
10210                         inline_costs += 2;
10211                         break;
10212                 }
10213                 case CEE_LDFLD:
10214                 case CEE_LDFLDA:
10215                 case CEE_STFLD:
10216                 case CEE_LDSFLD:
10217                 case CEE_LDSFLDA:
10218                 case CEE_STSFLD: {
10219                         MonoClassField *field;
10220 #ifndef DISABLE_REMOTING
10221                         int costs;
10222 #endif
10223                         guint foffset;
10224                         gboolean is_instance;
10225                         int op;
10226                         gpointer addr = NULL;
10227                         gboolean is_special_static;
10228                         MonoType *ftype;
10229                         MonoInst *store_val = NULL;
10230                         MonoInst *thread_ins;
10231
10232                         op = *ip;
10233                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10234                         if (is_instance) {
10235                                 if (op == CEE_STFLD) {
10236                                         CHECK_STACK (2);
10237                                         sp -= 2;
10238                                         store_val = sp [1];
10239                                 } else {
10240                                         CHECK_STACK (1);
10241                                         --sp;
10242                                 }
10243                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10244                                         UNVERIFIED;
10245                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10246                                         UNVERIFIED;
10247                         } else {
10248                                 if (op == CEE_STSFLD) {
10249                                         CHECK_STACK (1);
10250                                         sp--;
10251                                         store_val = sp [0];
10252                                 }
10253                         }
10254
10255                         CHECK_OPSIZE (5);
10256                         token = read32 (ip + 1);
10257                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10258                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10259                                 klass = field->parent;
10260                         }
10261                         else {
10262                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10263                                 CHECK_CFG_ERROR;
10264                         }
10265                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10266                                 FIELD_ACCESS_FAILURE (method, field);
10267                         mono_class_init (klass);
10268
10269                         /* if the class is Critical then transparent code cannot access it's fields */
10270                         if (!is_instance && mono_security_core_clr_enabled ())
10271                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10272
10273                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10274                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10275                         if (mono_security_core_clr_enabled ())
10276                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10277                         */
10278
10279                         ftype = mono_field_get_type (field);
10280
10281                         /*
10282                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10283                          * the static case.
10284                          */
10285                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10286                                 switch (op) {
10287                                 case CEE_LDFLD:
10288                                         op = CEE_LDSFLD;
10289                                         break;
10290                                 case CEE_STFLD:
10291                                         op = CEE_STSFLD;
10292                                         break;
10293                                 case CEE_LDFLDA:
10294                                         op = CEE_LDSFLDA;
10295                                         break;
10296                                 default:
10297                                         g_assert_not_reached ();
10298                                 }
10299                                 is_instance = FALSE;
10300                         }
10301
10302                         context_used = mini_class_check_context_used (cfg, klass);
10303
10304                         /* INSTANCE CASE */
10305
10306                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10307                         if (op == CEE_STFLD) {
10308                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10309                                         UNVERIFIED;
10310 #ifndef DISABLE_REMOTING
10311                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10312                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10313                                         MonoInst *iargs [5];
10314
10315                                         GSHAREDVT_FAILURE (op);
10316
10317                                         iargs [0] = sp [0];
10318                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10319                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10320                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10321                                                     field->offset);
10322                                         iargs [4] = sp [1];
10323
10324                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10325                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10326                                                                                            iargs, ip, cfg->real_offset, TRUE);
10327                                                 CHECK_CFG_EXCEPTION;
10328                                                 g_assert (costs > 0);
10329
10330                                                 cfg->real_offset += 5;
10331
10332                                                 inline_costs += costs;
10333                                         } else {
10334                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10335                                         }
10336                                 } else
10337 #endif
10338                                 {
10339                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10340
10341                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10342
10343                                         if (ins_flag & MONO_INST_VOLATILE) {
10344                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10345                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10346                                         }
10347
10348                                         if (mini_is_gsharedvt_klass (klass)) {
10349                                                 MonoInst *offset_ins;
10350
10351                                                 context_used = mini_class_check_context_used (cfg, klass);
10352
10353                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10354                                                 /* The value is offset by 1 */
10355                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10356                                                 dreg = alloc_ireg_mp (cfg);
10357                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10358                                                 wbarrier_ptr_ins = ins;
10359                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10360                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10361                                         } else {
10362                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10363                                         }
10364                                         if (sp [0]->opcode != OP_LDADDR)
10365                                                 store->flags |= MONO_INST_FAULT;
10366
10367                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10368                                                 if (mini_is_gsharedvt_klass (klass)) {
10369                                                         g_assert (wbarrier_ptr_ins);
10370                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10371                                                 } else {
10372                                                         /* insert call to write barrier */
10373                                                         MonoInst *ptr;
10374                                                         int dreg;
10375
10376                                                         dreg = alloc_ireg_mp (cfg);
10377                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10378                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10379                                                 }
10380                                         }
10381
10382                                         store->flags |= ins_flag;
10383                                 }
10384                                 ins_flag = 0;
10385                                 ip += 5;
10386                                 break;
10387                         }
10388
10389 #ifndef DISABLE_REMOTING
10390                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10391                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10392                                 MonoInst *iargs [4];
10393
10394                                 GSHAREDVT_FAILURE (op);
10395
10396                                 iargs [0] = sp [0];
10397                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10398                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10399                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10400                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10401                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10402                                                                                    iargs, ip, cfg->real_offset, TRUE);
10403                                         CHECK_CFG_EXCEPTION;
10404                                         g_assert (costs > 0);
10405
10406                                         cfg->real_offset += 5;
10407
10408                                         *sp++ = iargs [0];
10409
10410                                         inline_costs += costs;
10411                                 } else {
10412                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10413                                         *sp++ = ins;
10414                                 }
10415                         } else
10416 #endif
10417                         if (is_instance) {
10418                                 if (sp [0]->type == STACK_VTYPE) {
10419                                         MonoInst *var;
10420
10421                                         /* Have to compute the address of the variable */
10422
10423                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10424                                         if (!var)
10425                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10426                                         else
10427                                                 g_assert (var->klass == klass);
10428
10429                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10430                                         sp [0] = ins;
10431                                 }
10432
10433                                 if (op == CEE_LDFLDA) {
10434                                         if (sp [0]->type == STACK_OBJ) {
10435                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10436                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10437                                         }
10438
10439                                         dreg = alloc_ireg_mp (cfg);
10440
10441                                         if (mini_is_gsharedvt_klass (klass)) {
10442                                                 MonoInst *offset_ins;
10443
10444                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10445                                                 /* The value is offset by 1 */
10446                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10447                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10448                                         } else {
10449                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10450                                         }
10451                                         ins->klass = mono_class_from_mono_type (field->type);
10452                                         ins->type = STACK_MP;
10453                                         *sp++ = ins;
10454                                 } else {
10455                                         MonoInst *load;
10456
10457                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10458
10459                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10460                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10461                                                 if (ins) {
10462                                                         *sp++ = ins;
10463                                                         ins_flag = 0;
10464                                                         ip += 5;
10465                                                         break;
10466                                                 }
10467                                         }
10468
10469                                         MonoInst *field_add_inst = sp [0];
10470                                         if (mini_is_gsharedvt_klass (klass)) {
10471                                                 MonoInst *offset_ins;
10472
10473                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10474                                                 /* The value is offset by 1 */
10475                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10476                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10477                                                 foffset = 0;
10478                                         }
10479
10480                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10481
10482                                         if (sp [0]->opcode != OP_LDADDR)
10483                                                 load->flags |= MONO_INST_FAULT;
10484                                         *sp++ = load;
10485                                 }
10486                         }
10487
10488                         if (is_instance) {
10489                                 ins_flag = 0;
10490                                 ip += 5;
10491                                 break;
10492                         }
10493
10494                         /* STATIC CASE */
10495                         context_used = mini_class_check_context_used (cfg, klass);
10496
10497                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10498                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10499                                 CHECK_CFG_ERROR;
10500                         }
10501
10502                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10503                          * to be called here.
10504                          */
10505                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10506                                 mono_class_vtable (cfg->domain, klass);
10507                                 CHECK_TYPELOAD (klass);
10508                         }
10509                         mono_domain_lock (cfg->domain);
10510                         if (cfg->domain->special_static_fields)
10511                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10512                         mono_domain_unlock (cfg->domain);
10513
10514                         is_special_static = mono_class_field_is_special_static (field);
10515
10516                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10517                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10518                         else
10519                                 thread_ins = NULL;
10520
10521                         /* Generate IR to compute the field address */
10522                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10523                                 /*
10524                                  * Fast access to TLS data
10525                                  * Inline version of get_thread_static_data () in
10526                                  * threads.c.
10527                                  */
10528                                 guint32 offset;
10529                                 int idx, static_data_reg, array_reg, dreg;
10530
10531                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10532                                         GSHAREDVT_FAILURE (op);
10533
10534                                 static_data_reg = alloc_ireg (cfg);
10535                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10536
10537                                 if (cfg->compile_aot) {
10538                                         int offset_reg, offset2_reg, idx_reg;
10539
10540                                         /* For TLS variables, this will return the TLS offset */
10541                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10542                                         offset_reg = ins->dreg;
10543                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10544                                         idx_reg = alloc_ireg (cfg);
10545                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10546                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10547                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10548                                         array_reg = alloc_ireg (cfg);
10549                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10550                                         offset2_reg = alloc_ireg (cfg);
10551                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10552                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10553                                         dreg = alloc_ireg (cfg);
10554                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10555                                 } else {
10556                                         offset = (gsize)addr & 0x7fffffff;
10557                                         idx = offset & 0x3f;
10558
10559                                         array_reg = alloc_ireg (cfg);
10560                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10561                                         dreg = alloc_ireg (cfg);
10562                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10563                                 }
10564                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10565                                         (cfg->compile_aot && is_special_static) ||
10566                                         (context_used && is_special_static)) {
10567                                 MonoInst *iargs [2];
10568
10569                                 g_assert (field->parent);
10570                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10571                                 if (context_used) {
10572                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10573                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10574                                 } else {
10575                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10576                                 }
10577                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10578                         } else if (context_used) {
10579                                 MonoInst *static_data;
10580
10581                                 /*
10582                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10583                                         method->klass->name_space, method->klass->name, method->name,
10584                                         depth, field->offset);
10585                                 */
10586
10587                                 if (mono_class_needs_cctor_run (klass, method))
10588                                         emit_class_init (cfg, klass);
10589
10590                                 /*
10591                                  * The pointer we're computing here is
10592                                  *
10593                                  *   super_info.static_data + field->offset
10594                                  */
10595                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10596                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10597
10598                                 if (mini_is_gsharedvt_klass (klass)) {
10599                                         MonoInst *offset_ins;
10600
10601                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10602                                         /* The value is offset by 1 */
10603                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10604                                         dreg = alloc_ireg_mp (cfg);
10605                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10606                                 } else if (field->offset == 0) {
10607                                         ins = static_data;
10608                                 } else {
10609                                         int addr_reg = mono_alloc_preg (cfg);
10610                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10611                                 }
10612                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10613                                 MonoInst *iargs [2];
10614
10615                                 g_assert (field->parent);
10616                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10617                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10618                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10619                         } else {
10620                                 MonoVTable *vtable = NULL;
10621
10622                                 if (!cfg->compile_aot)
10623                                         vtable = mono_class_vtable (cfg->domain, klass);
10624                                 CHECK_TYPELOAD (klass);
10625
10626                                 if (!addr) {
10627                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10628                                                 if (!(g_slist_find (class_inits, klass))) {
10629                                                         emit_class_init (cfg, klass);
10630                                                         if (cfg->verbose_level > 2)
10631                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10632                                                         class_inits = g_slist_prepend (class_inits, klass);
10633                                                 }
10634                                         } else {
10635                                                 if (cfg->run_cctors) {
10636                                                         /* This makes so that inline cannot trigger */
10637                                                         /* .cctors: too many apps depend on them */
10638                                                         /* running with a specific order... */
10639                                                         g_assert (vtable);
10640                                                         if (! vtable->initialized)
10641                                                                 INLINE_FAILURE ("class init");
10642                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10643                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10644                                                                 goto exception_exit;
10645                                                         }
10646                                                 }
10647                                         }
10648                                         if (cfg->compile_aot)
10649                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10650                                         else {
10651                                                 g_assert (vtable);
10652                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10653                                                 g_assert (addr);
10654                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10655                                         }
10656                                 } else {
10657                                         MonoInst *iargs [1];
10658                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10659                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10660                                 }
10661                         }
10662
10663                         /* Generate IR to do the actual load/store operation */
10664
10665                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10666                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10667                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10668                         }
10669
10670                         if (op == CEE_LDSFLDA) {
10671                                 ins->klass = mono_class_from_mono_type (ftype);
10672                                 ins->type = STACK_PTR;
10673                                 *sp++ = ins;
10674                         } else if (op == CEE_STSFLD) {
10675                                 MonoInst *store;
10676
10677                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10678                                 store->flags |= ins_flag;
10679                         } else {
10680                                 gboolean is_const = FALSE;
10681                                 MonoVTable *vtable = NULL;
10682                                 gpointer addr = NULL;
10683
10684                                 if (!context_used) {
10685                                         vtable = mono_class_vtable (cfg->domain, klass);
10686                                         CHECK_TYPELOAD (klass);
10687                                 }
10688                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10689                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10690                                         int ro_type = ftype->type;
10691                                         if (!addr)
10692                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10693                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10694                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10695                                         }
10696
10697                                         GSHAREDVT_FAILURE (op);
10698
10699                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10700                                         is_const = TRUE;
10701                                         switch (ro_type) {
10702                                         case MONO_TYPE_BOOLEAN:
10703                                         case MONO_TYPE_U1:
10704                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10705                                                 sp++;
10706                                                 break;
10707                                         case MONO_TYPE_I1:
10708                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10709                                                 sp++;
10710                                                 break;
10711                                         case MONO_TYPE_CHAR:
10712                                         case MONO_TYPE_U2:
10713                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10714                                                 sp++;
10715                                                 break;
10716                                         case MONO_TYPE_I2:
10717                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10718                                                 sp++;
10719                                                 break;
10720                                                 break;
10721                                         case MONO_TYPE_I4:
10722                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10723                                                 sp++;
10724                                                 break;
10725                                         case MONO_TYPE_U4:
10726                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10727                                                 sp++;
10728                                                 break;
10729                                         case MONO_TYPE_I:
10730                                         case MONO_TYPE_U:
10731                                         case MONO_TYPE_PTR:
10732                                         case MONO_TYPE_FNPTR:
10733                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10734                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10735                                                 sp++;
10736                                                 break;
10737                                         case MONO_TYPE_STRING:
10738                                         case MONO_TYPE_OBJECT:
10739                                         case MONO_TYPE_CLASS:
10740                                         case MONO_TYPE_SZARRAY:
10741                                         case MONO_TYPE_ARRAY:
10742                                                 if (!mono_gc_is_moving ()) {
10743                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10744                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10745                                                         sp++;
10746                                                 } else {
10747                                                         is_const = FALSE;
10748                                                 }
10749                                                 break;
10750                                         case MONO_TYPE_I8:
10751                                         case MONO_TYPE_U8:
10752                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10753                                                 sp++;
10754                                                 break;
10755                                         case MONO_TYPE_R4:
10756                                         case MONO_TYPE_R8:
10757                                         case MONO_TYPE_VALUETYPE:
10758                                         default:
10759                                                 is_const = FALSE;
10760                                                 break;
10761                                         }
10762                                 }
10763
10764                                 if (!is_const) {
10765                                         MonoInst *load;
10766
10767                                         CHECK_STACK_OVF (1);
10768
10769                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10770                                         load->flags |= ins_flag;
10771                                         ins_flag = 0;
10772                                         *sp++ = load;
10773                                 }
10774                         }
10775
10776                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10777                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10778                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10779                         }
10780
10781                         ins_flag = 0;
10782                         ip += 5;
10783                         break;
10784                 }
10785                 case CEE_STOBJ:
10786                         CHECK_STACK (2);
10787                         sp -= 2;
10788                         CHECK_OPSIZE (5);
10789                         token = read32 (ip + 1);
10790                         klass = mini_get_class (method, token, generic_context);
10791                         CHECK_TYPELOAD (klass);
10792
10793                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10794                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10795                         ins_flag = 0;
10796                         ip += 5;
10797                         inline_costs += 1;
10798                         break;
10799
10800                         /*
10801                          * Array opcodes
10802                          */
10803                 case CEE_NEWARR: {
10804                         MonoInst *len_ins;
10805                         const char *data_ptr;
10806                         int data_size = 0;
10807                         guint32 field_token;
10808
10809                         CHECK_STACK (1);
10810                         --sp;
10811
10812                         CHECK_OPSIZE (5);
10813                         token = read32 (ip + 1);
10814
10815                         klass = mini_get_class (method, token, generic_context);
10816                         CHECK_TYPELOAD (klass);
10817                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10818                                 UNVERIFIED;
10819
10820                         context_used = mini_class_check_context_used (cfg, klass);
10821
10822                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10823                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10824                                 ins->sreg1 = sp [0]->dreg;
10825                                 ins->type = STACK_I4;
10826                                 ins->dreg = alloc_ireg (cfg);
10827                                 MONO_ADD_INS (cfg->cbb, ins);
10828                                 *sp = mono_decompose_opcode (cfg, ins);
10829                         }
10830
10831                         if (context_used) {
10832                                 MonoInst *args [3];
10833                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10834                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10835
10836                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10837
10838                                 /* vtable */
10839                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10840                                         array_class, MONO_RGCTX_INFO_VTABLE);
10841                                 /* array len */
10842                                 args [1] = sp [0];
10843
10844                                 if (managed_alloc)
10845                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10846                                 else
10847                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10848                         } else {
10849                                 if (cfg->opt & MONO_OPT_SHARED) {
10850                                         /* Decompose now to avoid problems with references to the domainvar */
10851                                         MonoInst *iargs [3];
10852
10853                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10854                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10855                                         iargs [2] = sp [0];
10856
10857                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10858                                 } else {
10859                                         /* Decompose later since it is needed by abcrem */
10860                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10861                                         mono_class_vtable (cfg->domain, array_type);
10862                                         CHECK_TYPELOAD (array_type);
10863
10864                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10865                                         ins->dreg = alloc_ireg_ref (cfg);
10866                                         ins->sreg1 = sp [0]->dreg;
10867                                         ins->inst_newa_class = klass;
10868                                         ins->type = STACK_OBJ;
10869                                         ins->klass = array_type;
10870                                         MONO_ADD_INS (cfg->cbb, ins);
10871                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10872                                         cfg->cbb->has_array_access = TRUE;
10873
10874                                         /* Needed so mono_emit_load_get_addr () gets called */
10875                                         mono_get_got_var (cfg);
10876                                 }
10877                         }
10878
10879                         len_ins = sp [0];
10880                         ip += 5;
10881                         *sp++ = ins;
10882                         inline_costs += 1;
10883
10884                         /*
10885                          * we inline/optimize the initialization sequence if possible.
10886                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10887                          * for small sizes open code the memcpy
10888                          * ensure the rva field is big enough
10889                          */
10890                         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))) {
10891                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10892                                 MonoInst *iargs [3];
10893                                 int add_reg = alloc_ireg_mp (cfg);
10894
10895                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10896                                 if (cfg->compile_aot) {
10897                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10898                                 } else {
10899                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10900                                 }
10901                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10902                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10903                                 ip += 11;
10904                         }
10905
10906                         break;
10907                 }
10908                 case CEE_LDLEN:
10909                         CHECK_STACK (1);
10910                         --sp;
10911                         if (sp [0]->type != STACK_OBJ)
10912                                 UNVERIFIED;
10913
10914                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10915                         ins->dreg = alloc_preg (cfg);
10916                         ins->sreg1 = sp [0]->dreg;
10917                         ins->type = STACK_I4;
10918                         /* This flag will be inherited by the decomposition */
10919                         ins->flags |= MONO_INST_FAULT;
10920                         MONO_ADD_INS (cfg->cbb, ins);
10921                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10922                         cfg->cbb->has_array_access = TRUE;
10923                         ip ++;
10924                         *sp++ = ins;
10925                         break;
10926                 case CEE_LDELEMA:
10927                         CHECK_STACK (2);
10928                         sp -= 2;
10929                         CHECK_OPSIZE (5);
10930                         if (sp [0]->type != STACK_OBJ)
10931                                 UNVERIFIED;
10932
10933                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10934
10935                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10936                         CHECK_TYPELOAD (klass);
10937                         /* we need to make sure that this array is exactly the type it needs
10938                          * to be for correctness. the wrappers are lax with their usage
10939                          * so we need to ignore them here
10940                          */
10941                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10942                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10943                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10944                                 CHECK_TYPELOAD (array_class);
10945                         }
10946
10947                         readonly = FALSE;
10948                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10949                         *sp++ = ins;
10950                         ip += 5;
10951                         break;
10952                 case CEE_LDELEM:
10953                 case CEE_LDELEM_I1:
10954                 case CEE_LDELEM_U1:
10955                 case CEE_LDELEM_I2:
10956                 case CEE_LDELEM_U2:
10957                 case CEE_LDELEM_I4:
10958                 case CEE_LDELEM_U4:
10959                 case CEE_LDELEM_I8:
10960                 case CEE_LDELEM_I:
10961                 case CEE_LDELEM_R4:
10962                 case CEE_LDELEM_R8:
10963                 case CEE_LDELEM_REF: {
10964                         MonoInst *addr;
10965
10966                         CHECK_STACK (2);
10967                         sp -= 2;
10968
10969                         if (*ip == CEE_LDELEM) {
10970                                 CHECK_OPSIZE (5);
10971                                 token = read32 (ip + 1);
10972                                 klass = mini_get_class (method, token, generic_context);
10973                                 CHECK_TYPELOAD (klass);
10974                                 mono_class_init (klass);
10975                         }
10976                         else
10977                                 klass = array_access_to_klass (*ip);
10978
10979                         if (sp [0]->type != STACK_OBJ)
10980                                 UNVERIFIED;
10981
10982                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10983
10984                         if (mini_is_gsharedvt_variable_klass (klass)) {
10985                                 // FIXME-VT: OP_ICONST optimization
10986                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10987                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10988                                 ins->opcode = OP_LOADV_MEMBASE;
10989                         } else if (sp [1]->opcode == OP_ICONST) {
10990                                 int array_reg = sp [0]->dreg;
10991                                 int index_reg = sp [1]->dreg;
10992                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
10993
10994                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
10995                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
10996
10997                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
10998                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
10999                         } else {
11000                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11001                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11002                         }
11003                         *sp++ = ins;
11004                         if (*ip == CEE_LDELEM)
11005                                 ip += 5;
11006                         else
11007                                 ++ip;
11008                         break;
11009                 }
11010                 case CEE_STELEM_I:
11011                 case CEE_STELEM_I1:
11012                 case CEE_STELEM_I2:
11013                 case CEE_STELEM_I4:
11014                 case CEE_STELEM_I8:
11015                 case CEE_STELEM_R4:
11016                 case CEE_STELEM_R8:
11017                 case CEE_STELEM_REF:
11018                 case CEE_STELEM: {
11019                         CHECK_STACK (3);
11020                         sp -= 3;
11021
11022                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11023
11024                         if (*ip == CEE_STELEM) {
11025                                 CHECK_OPSIZE (5);
11026                                 token = read32 (ip + 1);
11027                                 klass = mini_get_class (method, token, generic_context);
11028                                 CHECK_TYPELOAD (klass);
11029                                 mono_class_init (klass);
11030                         }
11031                         else
11032                                 klass = array_access_to_klass (*ip);
11033
11034                         if (sp [0]->type != STACK_OBJ)
11035                                 UNVERIFIED;
11036
11037                         emit_array_store (cfg, klass, sp, TRUE);
11038
11039                         if (*ip == CEE_STELEM)
11040                                 ip += 5;
11041                         else
11042                                 ++ip;
11043                         inline_costs += 1;
11044                         break;
11045                 }
11046                 case CEE_CKFINITE: {
11047                         CHECK_STACK (1);
11048                         --sp;
11049
11050                         if (cfg->llvm_only) {
11051                                 MonoInst *iargs [1];
11052
11053                                 iargs [0] = sp [0];
11054                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11055                         } else  {
11056                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11057                                 ins->sreg1 = sp [0]->dreg;
11058                                 ins->dreg = alloc_freg (cfg);
11059                                 ins->type = STACK_R8;
11060                                 MONO_ADD_INS (cfg->cbb, ins);
11061
11062                                 *sp++ = mono_decompose_opcode (cfg, ins);
11063                         }
11064
11065                         ++ip;
11066                         break;
11067                 }
11068                 case CEE_REFANYVAL: {
11069                         MonoInst *src_var, *src;
11070
11071                         int klass_reg = alloc_preg (cfg);
11072                         int dreg = alloc_preg (cfg);
11073
11074                         GSHAREDVT_FAILURE (*ip);
11075
11076                         CHECK_STACK (1);
11077                         MONO_INST_NEW (cfg, ins, *ip);
11078                         --sp;
11079                         CHECK_OPSIZE (5);
11080                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11081                         CHECK_TYPELOAD (klass);
11082
11083                         context_used = mini_class_check_context_used (cfg, klass);
11084
11085                         // FIXME:
11086                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11087                         if (!src_var)
11088                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11089                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11090                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11091
11092                         if (context_used) {
11093                                 MonoInst *klass_ins;
11094
11095                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11096                                                 klass, MONO_RGCTX_INFO_KLASS);
11097
11098                                 // FIXME:
11099                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11100                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11101                         } else {
11102                                 mini_emit_class_check (cfg, klass_reg, klass);
11103                         }
11104                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11105                         ins->type = STACK_MP;
11106                         ins->klass = klass;
11107                         *sp++ = ins;
11108                         ip += 5;
11109                         break;
11110                 }
11111                 case CEE_MKREFANY: {
11112                         MonoInst *loc, *addr;
11113
11114                         GSHAREDVT_FAILURE (*ip);
11115
11116                         CHECK_STACK (1);
11117                         MONO_INST_NEW (cfg, ins, *ip);
11118                         --sp;
11119                         CHECK_OPSIZE (5);
11120                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11121                         CHECK_TYPELOAD (klass);
11122
11123                         context_used = mini_class_check_context_used (cfg, klass);
11124
11125                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11126                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11127
11128                         if (context_used) {
11129                                 MonoInst *const_ins;
11130                                 int type_reg = alloc_preg (cfg);
11131
11132                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11133                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11134                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11135                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11136                         } else {
11137                                 int const_reg = alloc_preg (cfg);
11138                                 int type_reg = alloc_preg (cfg);
11139
11140                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11141                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11142                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11143                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11144                         }
11145                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11146
11147                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11148                         ins->type = STACK_VTYPE;
11149                         ins->klass = mono_defaults.typed_reference_class;
11150                         *sp++ = ins;
11151                         ip += 5;
11152                         break;
11153                 }
11154                 case CEE_LDTOKEN: {
11155                         gpointer handle;
11156                         MonoClass *handle_class;
11157
11158                         CHECK_STACK_OVF (1);
11159
11160                         CHECK_OPSIZE (5);
11161                         n = read32 (ip + 1);
11162
11163                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11164                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11165                                 handle = mono_method_get_wrapper_data (method, n);
11166                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11167                                 if (handle_class == mono_defaults.typehandle_class)
11168                                         handle = &((MonoClass*)handle)->byval_arg;
11169                         }
11170                         else {
11171                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11172                                 CHECK_CFG_ERROR;
11173                         }
11174                         if (!handle)
11175                                 LOAD_ERROR;
11176                         mono_class_init (handle_class);
11177                         if (cfg->gshared) {
11178                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11179                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11180                                         /* This case handles ldtoken
11181                                            of an open type, like for
11182                                            typeof(Gen<>). */
11183                                         context_used = 0;
11184                                 } else if (handle_class == mono_defaults.typehandle_class) {
11185                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11186                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11187                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11188                                 else if (handle_class == mono_defaults.methodhandle_class)
11189                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11190                                 else
11191                                         g_assert_not_reached ();
11192                         }
11193
11194                         if ((cfg->opt & MONO_OPT_SHARED) &&
11195                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11196                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11197                                 MonoInst *addr, *vtvar, *iargs [3];
11198                                 int method_context_used;
11199
11200                                 method_context_used = mini_method_check_context_used (cfg, method);
11201
11202                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11203
11204                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11205                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11206                                 if (method_context_used) {
11207                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11208                                                 method, MONO_RGCTX_INFO_METHOD);
11209                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11210                                 } else {
11211                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11212                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11213                                 }
11214                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11215
11216                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11217
11218                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11219                         } else {
11220                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11221                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11222                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11223                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11224                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11225                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11226
11227                                         mono_class_init (tclass);
11228                                         if (context_used) {
11229                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11230                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11231                                         } else if (cfg->compile_aot) {
11232                                                 if (method->wrapper_type) {
11233                                                         error_init (&error); //got to do it since there are multiple conditionals below
11234                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11235                                                                 /* Special case for static synchronized wrappers */
11236                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11237                                                         } else {
11238                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11239                                                                 /* FIXME: n is not a normal token */
11240                                                                 DISABLE_AOT (cfg);
11241                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11242                                                         }
11243                                                 } else {
11244                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11245                                                 }
11246                                         } else {
11247                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11248                                                 CHECK_CFG_ERROR;
11249                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11250                                         }
11251                                         ins->type = STACK_OBJ;
11252                                         ins->klass = cmethod->klass;
11253                                         ip += 5;
11254                                 } else {
11255                                         MonoInst *addr, *vtvar;
11256
11257                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11258
11259                                         if (context_used) {
11260                                                 if (handle_class == mono_defaults.typehandle_class) {
11261                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11262                                                                         mono_class_from_mono_type ((MonoType *)handle),
11263                                                                         MONO_RGCTX_INFO_TYPE);
11264                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11265                                                         ins = emit_get_rgctx_method (cfg, context_used,
11266                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11267                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11268                                                         ins = emit_get_rgctx_field (cfg, context_used,
11269                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11270                                                 } else {
11271                                                         g_assert_not_reached ();
11272                                                 }
11273                                         } else if (cfg->compile_aot) {
11274                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11275                                         } else {
11276                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11277                                         }
11278                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11279                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11280                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11281                                 }
11282                         }
11283
11284                         *sp++ = ins;
11285                         ip += 5;
11286                         break;
11287                 }
11288                 case CEE_THROW:
11289                         CHECK_STACK (1);
11290                         if (sp [-1]->type != STACK_OBJ)
11291                                 UNVERIFIED;
11292
11293                         MONO_INST_NEW (cfg, ins, OP_THROW);
11294                         --sp;
11295                         ins->sreg1 = sp [0]->dreg;
11296                         ip++;
11297                         cfg->cbb->out_of_line = TRUE;
11298                         MONO_ADD_INS (cfg->cbb, ins);
11299                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11300                         MONO_ADD_INS (cfg->cbb, ins);
11301                         sp = stack_start;
11302
11303                         link_bblock (cfg, cfg->cbb, end_bblock);
11304                         start_new_bblock = 1;
11305                         /* This can complicate code generation for llvm since the return value might not be defined */
11306                         if (COMPILE_LLVM (cfg))
11307                                 INLINE_FAILURE ("throw");
11308                         break;
11309                 case CEE_ENDFINALLY:
11310                         if (!ip_in_finally_clause (cfg, ip - header->code))
11311                                 UNVERIFIED;
11312                         /* mono_save_seq_point_info () depends on this */
11313                         if (sp != stack_start)
11314                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11315                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11316                         MONO_ADD_INS (cfg->cbb, ins);
11317                         ip++;
11318                         start_new_bblock = 1;
11319
11320                         /*
11321                          * Control will leave the method so empty the stack, otherwise
11322                          * the next basic block will start with a nonempty stack.
11323                          */
11324                         while (sp != stack_start) {
11325                                 sp--;
11326                         }
11327                         break;
11328                 case CEE_LEAVE:
11329                 case CEE_LEAVE_S: {
11330                         GList *handlers;
11331
11332                         if (*ip == CEE_LEAVE) {
11333                                 CHECK_OPSIZE (5);
11334                                 target = ip + 5 + (gint32)read32(ip + 1);
11335                         } else {
11336                                 CHECK_OPSIZE (2);
11337                                 target = ip + 2 + (signed char)(ip [1]);
11338                         }
11339
11340                         /* empty the stack */
11341                         while (sp != stack_start) {
11342                                 sp--;
11343                         }
11344
11345                         /*
11346                          * If this leave statement is in a catch block, check for a
11347                          * pending exception, and rethrow it if necessary.
11348                          * We avoid doing this in runtime invoke wrappers, since those are called
11349                          * by native code which excepts the wrapper to catch all exceptions.
11350                          */
11351                         for (i = 0; i < header->num_clauses; ++i) {
11352                                 MonoExceptionClause *clause = &header->clauses [i];
11353
11354                                 /*
11355                                  * Use <= in the final comparison to handle clauses with multiple
11356                                  * leave statements, like in bug #78024.
11357                                  * The ordering of the exception clauses guarantees that we find the
11358                                  * innermost clause.
11359                                  */
11360                                 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) {
11361                                         MonoInst *exc_ins;
11362                                         MonoBasicBlock *dont_throw;
11363
11364                                         /*
11365                                           MonoInst *load;
11366
11367                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11368                                         */
11369
11370                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11371
11372                                         NEW_BBLOCK (cfg, dont_throw);
11373
11374                                         /*
11375                                          * Currently, we always rethrow the abort exception, despite the
11376                                          * fact that this is not correct. See thread6.cs for an example.
11377                                          * But propagating the abort exception is more important than
11378                                          * getting the sematics right.
11379                                          */
11380                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11381                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11382                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11383
11384                                         MONO_START_BB (cfg, dont_throw);
11385                                 }
11386                         }
11387
11388 #ifdef ENABLE_LLVM
11389                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11390 #endif
11391
11392                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11393                                 GList *tmp;
11394                                 MonoExceptionClause *clause;
11395
11396                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11397                                         clause = (MonoExceptionClause *)tmp->data;
11398                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11399                                         g_assert (tblock);
11400                                         link_bblock (cfg, cfg->cbb, tblock);
11401                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11402                                         ins->inst_target_bb = tblock;
11403                                         ins->inst_eh_block = clause;
11404                                         MONO_ADD_INS (cfg->cbb, ins);
11405                                         cfg->cbb->has_call_handler = 1;
11406                                         if (COMPILE_LLVM (cfg)) {
11407                                                 MonoBasicBlock *target_bb;
11408
11409                                                 /*
11410                                                  * Link the finally bblock with the target, since it will
11411                                                  * conceptually branch there.
11412                                                  */
11413                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11414                                                 GET_BBLOCK (cfg, target_bb, target);
11415                                                 link_bblock (cfg, tblock, target_bb);
11416                                         }
11417                                 }
11418                                 g_list_free (handlers);
11419                         }
11420
11421                         MONO_INST_NEW (cfg, ins, OP_BR);
11422                         MONO_ADD_INS (cfg->cbb, ins);
11423                         GET_BBLOCK (cfg, tblock, target);
11424                         link_bblock (cfg, cfg->cbb, tblock);
11425                         ins->inst_target_bb = tblock;
11426
11427                         start_new_bblock = 1;
11428
11429                         if (*ip == CEE_LEAVE)
11430                                 ip += 5;
11431                         else
11432                                 ip += 2;
11433
11434                         break;
11435                 }
11436
11437                         /*
11438                          * Mono specific opcodes
11439                          */
11440                 case MONO_CUSTOM_PREFIX: {
11441
11442                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11443
11444                         CHECK_OPSIZE (2);
11445                         switch (ip [1]) {
11446                         case CEE_MONO_ICALL: {
11447                                 gpointer func;
11448                                 MonoJitICallInfo *info;
11449
11450                                 token = read32 (ip + 2);
11451                                 func = mono_method_get_wrapper_data (method, token);
11452                                 info = mono_find_jit_icall_by_addr (func);
11453                                 if (!info)
11454                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11455                                 g_assert (info);
11456
11457                                 CHECK_STACK (info->sig->param_count);
11458                                 sp -= info->sig->param_count;
11459
11460                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11461                                         MonoInst *addr;
11462
11463                                         /*
11464                                          * This is called on unattached threads, so it cannot go through the trampoline
11465                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11466                                          * instead.
11467                                          */
11468                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11469                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11470                                 } else {
11471                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11472                                 }
11473
11474                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11475                                         *sp++ = ins;
11476
11477                                 ip += 6;
11478                                 inline_costs += 10 * num_calls++;
11479
11480                                 break;
11481                         }
11482                         case CEE_MONO_LDPTR_CARD_TABLE:
11483                         case CEE_MONO_LDPTR_NURSERY_START:
11484                         case CEE_MONO_LDPTR_NURSERY_BITS:
11485                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11486                                 CHECK_STACK_OVF (1);
11487
11488                                 switch (ip [1]) {
11489                                 case CEE_MONO_LDPTR_CARD_TABLE:
11490                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11491                                         break;
11492                                 case CEE_MONO_LDPTR_NURSERY_START:
11493                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11494                                         break;
11495                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11496                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11497                                         break;
11498                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11499                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11500                                         break;
11501                                 default:
11502                                         g_assert_not_reached ();
11503                                         break;
11504                                 }
11505
11506                                 *sp++ = ins;
11507                                 ip += 2;
11508                                 inline_costs += 10 * num_calls++;
11509                                 break;
11510                         }
11511                         case CEE_MONO_LDPTR: {
11512                                 gpointer ptr;
11513
11514                                 CHECK_STACK_OVF (1);
11515                                 CHECK_OPSIZE (6);
11516                                 token = read32 (ip + 2);
11517
11518                                 ptr = mono_method_get_wrapper_data (method, token);
11519                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11520                                 *sp++ = ins;
11521                                 ip += 6;
11522                                 inline_costs += 10 * num_calls++;
11523                                 /* Can't embed random pointers into AOT code */
11524                                 DISABLE_AOT (cfg);
11525                                 break;
11526                         }
11527                         case CEE_MONO_JIT_ICALL_ADDR: {
11528                                 MonoJitICallInfo *callinfo;
11529                                 gpointer ptr;
11530
11531                                 CHECK_STACK_OVF (1);
11532                                 CHECK_OPSIZE (6);
11533                                 token = read32 (ip + 2);
11534
11535                                 ptr = mono_method_get_wrapper_data (method, token);
11536                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11537                                 g_assert (callinfo);
11538                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11539                                 *sp++ = ins;
11540                                 ip += 6;
11541                                 inline_costs += 10 * num_calls++;
11542                                 break;
11543                         }
11544                         case CEE_MONO_ICALL_ADDR: {
11545                                 MonoMethod *cmethod;
11546                                 gpointer ptr;
11547
11548                                 CHECK_STACK_OVF (1);
11549                                 CHECK_OPSIZE (6);
11550                                 token = read32 (ip + 2);
11551
11552                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11553
11554                                 if (cfg->compile_aot) {
11555                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11556                                                 /*
11557                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11558                                                  * before the call, its not needed when using direct pinvoke.
11559                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11560                                                  * on platforms which don't support dlopen ().
11561                                                  */
11562                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11563                                         } else {
11564                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11565                                         }
11566                                 } else {
11567                                         ptr = mono_lookup_internal_call (cmethod);
11568                                         g_assert (ptr);
11569                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11570                                 }
11571                                 *sp++ = ins;
11572                                 ip += 6;
11573                                 break;
11574                         }
11575                         case CEE_MONO_VTADDR: {
11576                                 MonoInst *src_var, *src;
11577
11578                                 CHECK_STACK (1);
11579                                 --sp;
11580
11581                                 // FIXME:
11582                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11583                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11584                                 *sp++ = src;
11585                                 ip += 2;
11586                                 break;
11587                         }
11588                         case CEE_MONO_NEWOBJ: {
11589                                 MonoInst *iargs [2];
11590
11591                                 CHECK_STACK_OVF (1);
11592                                 CHECK_OPSIZE (6);
11593                                 token = read32 (ip + 2);
11594                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11595                                 mono_class_init (klass);
11596                                 NEW_DOMAINCONST (cfg, iargs [0]);
11597                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11598                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11599                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11600                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11601                                 ip += 6;
11602                                 inline_costs += 10 * num_calls++;
11603                                 break;
11604                         }
11605                         case CEE_MONO_OBJADDR:
11606                                 CHECK_STACK (1);
11607                                 --sp;
11608                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11609                                 ins->dreg = alloc_ireg_mp (cfg);
11610                                 ins->sreg1 = sp [0]->dreg;
11611                                 ins->type = STACK_MP;
11612                                 MONO_ADD_INS (cfg->cbb, ins);
11613                                 *sp++ = ins;
11614                                 ip += 2;
11615                                 break;
11616                         case CEE_MONO_LDNATIVEOBJ:
11617                                 /*
11618                                  * Similar to LDOBJ, but instead load the unmanaged
11619                                  * representation of the vtype to the stack.
11620                                  */
11621                                 CHECK_STACK (1);
11622                                 CHECK_OPSIZE (6);
11623                                 --sp;
11624                                 token = read32 (ip + 2);
11625                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11626                                 g_assert (klass->valuetype);
11627                                 mono_class_init (klass);
11628
11629                                 {
11630                                         MonoInst *src, *dest, *temp;
11631
11632                                         src = sp [0];
11633                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11634                                         temp->backend.is_pinvoke = 1;
11635                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11636                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11637
11638                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11639                                         dest->type = STACK_VTYPE;
11640                                         dest->klass = klass;
11641
11642                                         *sp ++ = dest;
11643                                         ip += 6;
11644                                 }
11645                                 break;
11646                         case CEE_MONO_RETOBJ: {
11647                                 /*
11648                                  * Same as RET, but return the native representation of a vtype
11649                                  * to the caller.
11650                                  */
11651                                 g_assert (cfg->ret);
11652                                 g_assert (mono_method_signature (method)->pinvoke);
11653                                 CHECK_STACK (1);
11654                                 --sp;
11655
11656                                 CHECK_OPSIZE (6);
11657                                 token = read32 (ip + 2);
11658                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11659
11660                                 if (!cfg->vret_addr) {
11661                                         g_assert (cfg->ret_var_is_local);
11662
11663                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11664                                 } else {
11665                                         EMIT_NEW_RETLOADA (cfg, ins);
11666                                 }
11667                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11668
11669                                 if (sp != stack_start)
11670                                         UNVERIFIED;
11671
11672                                 MONO_INST_NEW (cfg, ins, OP_BR);
11673                                 ins->inst_target_bb = end_bblock;
11674                                 MONO_ADD_INS (cfg->cbb, ins);
11675                                 link_bblock (cfg, cfg->cbb, end_bblock);
11676                                 start_new_bblock = 1;
11677                                 ip += 6;
11678                                 break;
11679                         }
11680                         case CEE_MONO_SAVE_LMF:
11681                         case CEE_MONO_RESTORE_LMF:
11682                                 ip += 2;
11683                                 break;
11684                         case CEE_MONO_CLASSCONST:
11685                                 CHECK_STACK_OVF (1);
11686                                 CHECK_OPSIZE (6);
11687                                 token = read32 (ip + 2);
11688                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11689                                 *sp++ = ins;
11690                                 ip += 6;
11691                                 inline_costs += 10 * num_calls++;
11692                                 break;
11693                         case CEE_MONO_NOT_TAKEN:
11694                                 cfg->cbb->out_of_line = TRUE;
11695                                 ip += 2;
11696                                 break;
11697                         case CEE_MONO_TLS: {
11698                                 MonoTlsKey key;
11699
11700                                 CHECK_STACK_OVF (1);
11701                                 CHECK_OPSIZE (6);
11702                                 key = (MonoTlsKey)read32 (ip + 2);
11703                                 g_assert (key < TLS_KEY_NUM);
11704
11705                                 ins = mono_create_tls_get (cfg, key);
11706                                 g_assert (ins);
11707                                 ins->type = STACK_PTR;
11708                                 *sp++ = ins;
11709                                 ip += 6;
11710                                 break;
11711                         }
11712                         case CEE_MONO_DYN_CALL: {
11713                                 MonoCallInst *call;
11714
11715                                 /* It would be easier to call a trampoline, but that would put an
11716                                  * extra frame on the stack, confusing exception handling. So
11717                                  * implement it inline using an opcode for now.
11718                                  */
11719
11720                                 if (!cfg->dyn_call_var) {
11721                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11722                                         /* prevent it from being register allocated */
11723                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11724                                 }
11725
11726                                 /* Has to use a call inst since it local regalloc expects it */
11727                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11728                                 ins = (MonoInst*)call;
11729                                 sp -= 2;
11730                                 ins->sreg1 = sp [0]->dreg;
11731                                 ins->sreg2 = sp [1]->dreg;
11732                                 MONO_ADD_INS (cfg->cbb, ins);
11733
11734                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11735
11736                                 ip += 2;
11737                                 inline_costs += 10 * num_calls++;
11738
11739                                 break;
11740                         }
11741                         case CEE_MONO_MEMORY_BARRIER: {
11742                                 CHECK_OPSIZE (6);
11743                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11744                                 ip += 6;
11745                                 break;
11746                         }
11747                         case CEE_MONO_ATOMIC_STORE_I4: {
11748                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11749
11750                                 CHECK_OPSIZE (6);
11751                                 CHECK_STACK (2);
11752                                 sp -= 2;
11753
11754                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11755                                 ins->dreg = sp [0]->dreg;
11756                                 ins->sreg1 = sp [1]->dreg;
11757                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11758                                 MONO_ADD_INS (cfg->cbb, ins);
11759
11760                                 ip += 6;
11761                                 break;
11762                         }
11763                         case CEE_MONO_JIT_ATTACH: {
11764                                 MonoInst *args [16], *domain_ins;
11765                                 MonoInst *ad_ins, *jit_tls_ins;
11766                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11767
11768                                 g_assert (!mono_threads_is_coop_enabled ());
11769
11770                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11771
11772                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11773                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11774
11775                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11776                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11777
11778                                 if (ad_ins && jit_tls_ins) {
11779                                         NEW_BBLOCK (cfg, next_bb);
11780                                         NEW_BBLOCK (cfg, call_bb);
11781
11782                                         if (cfg->compile_aot) {
11783                                                 /* AOT code is only used in the root domain */
11784                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11785                                         } else {
11786                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11787                                         }
11788                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11789                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11790
11791                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11792                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11793
11794                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11795                                         MONO_START_BB (cfg, call_bb);
11796                                 }
11797
11798                                 /* AOT code is only used in the root domain */
11799                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11800                                 if (cfg->compile_aot) {
11801                                         MonoInst *addr;
11802
11803                                         /*
11804                                          * This is called on unattached threads, so it cannot go through the trampoline
11805                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11806                                          * instead.
11807                                          */
11808                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11809                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11810                                 } else {
11811                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11812                                 }
11813                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11814
11815                                 if (next_bb)
11816                                         MONO_START_BB (cfg, next_bb);
11817
11818                                 ip += 2;
11819                                 break;
11820                         }
11821                         case CEE_MONO_JIT_DETACH: {
11822                                 MonoInst *args [16];
11823
11824                                 /* Restore the original domain */
11825                                 dreg = alloc_ireg (cfg);
11826                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11827                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11828                                 ip += 2;
11829                                 break;
11830                         }
11831                         case CEE_MONO_CALLI_EXTRA_ARG: {
11832                                 MonoInst *addr;
11833                                 MonoMethodSignature *fsig;
11834                                 MonoInst *arg;
11835
11836                                 /*
11837                                  * This is the same as CEE_CALLI, but passes an additional argument
11838                                  * to the called method in llvmonly mode.
11839                                  * This is only used by delegate invoke wrappers to call the
11840                                  * actual delegate method.
11841                                  */
11842                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11843
11844                                 CHECK_OPSIZE (6);
11845                                 token = read32 (ip + 2);
11846
11847                                 ins = NULL;
11848
11849                                 cmethod = NULL;
11850                                 CHECK_STACK (1);
11851                                 --sp;
11852                                 addr = *sp;
11853                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11854                                 CHECK_CFG_ERROR;
11855
11856                                 if (cfg->llvm_only)
11857                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11858
11859                                 n = fsig->param_count + fsig->hasthis + 1;
11860
11861                                 CHECK_STACK (n);
11862
11863                                 sp -= n;
11864                                 arg = sp [n - 1];
11865
11866                                 if (cfg->llvm_only) {
11867                                         /*
11868                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11869                                          * cconv. This is set by mono_init_delegate ().
11870                                          */
11871                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11872                                                 MonoInst *callee = addr;
11873                                                 MonoInst *call, *localloc_ins;
11874                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11875                                                 int low_bit_reg = alloc_preg (cfg);
11876
11877                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11878                                                 NEW_BBLOCK (cfg, end_bb);
11879
11880                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11881                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11882                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11883
11884                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11885                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11886                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11887                                                 /*
11888                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11889                                                  */
11890                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11891                                                 ins->dreg = alloc_preg (cfg);
11892                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11893                                                 MONO_ADD_INS (cfg->cbb, ins);
11894                                                 localloc_ins = ins;
11895                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11896                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11897                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11898
11899                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11900                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11901
11902                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11903                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11904                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11905                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11906                                                 ins->dreg = call->dreg;
11907
11908                                                 MONO_START_BB (cfg, end_bb);
11909                                         } else {
11910                                                 /* Caller uses a normal calling conv */
11911
11912                                                 MonoInst *callee = addr;
11913                                                 MonoInst *call, *localloc_ins;
11914                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11915                                                 int low_bit_reg = alloc_preg (cfg);
11916
11917                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11918                                                 NEW_BBLOCK (cfg, end_bb);
11919
11920                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11921                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11923
11924                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
11925                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11926                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11927                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
11928                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11929                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11930                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
11931                                                 MONO_ADD_INS (cfg->cbb, addr);
11932                                                 /*
11933                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
11934                                                  */
11935                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11936                                                 ins->dreg = alloc_preg (cfg);
11937                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11938                                                 MONO_ADD_INS (cfg->cbb, ins);
11939                                                 localloc_ins = ins;
11940                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11941                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11942                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11943
11944                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11945                                                 ins->dreg = call->dreg;
11946                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11947
11948                                                 MONO_START_BB (cfg, end_bb);
11949                                         }
11950                                 } else {
11951                                         /* Same as CEE_CALLI */
11952                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
11953                                                 /*
11954                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
11955                                                  */
11956                                                 MonoInst *callee = addr;
11957
11958                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11959                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11960                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
11961                                         } else {
11962                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
11963                                         }
11964                                 }
11965
11966                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
11967                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
11968
11969                                 CHECK_CFG_EXCEPTION;
11970
11971                                 ip += 6;
11972                                 ins_flag = 0;
11973                                 constrained_class = NULL;
11974                                 break;
11975                         }
11976                         case CEE_MONO_LDDOMAIN:
11977                                 CHECK_STACK_OVF (1);
11978                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
11979                                 ip += 2;
11980                                 *sp++ = ins;
11981                                 break;
11982                         case CEE_MONO_GET_LAST_ERROR:
11983                                 CHECK_OPSIZE (2);
11984                                 CHECK_STACK_OVF (1);
11985
11986                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
11987                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
11988                                 ins->type = STACK_I4;
11989                                 MONO_ADD_INS (cfg->cbb, ins);
11990
11991                                 ip += 2;
11992                                 *sp++ = ins;
11993                                 break;
11994                         case CEE_MONO_GET_RGCTX_ARG:
11995                                 CHECK_OPSIZE (2);
11996                                 CHECK_STACK_OVF (1);
11997
11998                                 mono_create_rgctx_var (cfg);
11999
12000                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12001                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12002                                 ins->sreg1 = cfg->rgctx_var->dreg;
12003                                 ins->type = STACK_PTR;
12004                                 MONO_ADD_INS (cfg->cbb, ins);
12005
12006                                 ip += 2;
12007                                 *sp++ = ins;
12008                                 break;
12009                         default:
12010                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12011                                 break;
12012                         }
12013                         break;
12014                 }
12015
12016                 case CEE_PREFIX1: {
12017                         CHECK_OPSIZE (2);
12018                         switch (ip [1]) {
12019                         case CEE_ARGLIST: {
12020                                 /* somewhat similar to LDTOKEN */
12021                                 MonoInst *addr, *vtvar;
12022                                 CHECK_STACK_OVF (1);
12023                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12024
12025                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12026                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12027
12028                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12029                                 ins->type = STACK_VTYPE;
12030                                 ins->klass = mono_defaults.argumenthandle_class;
12031                                 *sp++ = ins;
12032                                 ip += 2;
12033                                 break;
12034                         }
12035                         case CEE_CEQ:
12036                         case CEE_CGT:
12037                         case CEE_CGT_UN:
12038                         case CEE_CLT:
12039                         case CEE_CLT_UN: {
12040                                 MonoInst *cmp, *arg1, *arg2;
12041
12042                                 CHECK_STACK (2);
12043                                 sp -= 2;
12044                                 arg1 = sp [0];
12045                                 arg2 = sp [1];
12046
12047                                 /*
12048                                  * The following transforms:
12049                                  *    CEE_CEQ    into OP_CEQ
12050                                  *    CEE_CGT    into OP_CGT
12051                                  *    CEE_CGT_UN into OP_CGT_UN
12052                                  *    CEE_CLT    into OP_CLT
12053                                  *    CEE_CLT_UN into OP_CLT_UN
12054                                  */
12055                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12056
12057                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12058                                 cmp->sreg1 = arg1->dreg;
12059                                 cmp->sreg2 = arg2->dreg;
12060                                 type_from_op (cfg, cmp, arg1, arg2);
12061                                 CHECK_TYPE (cmp);
12062                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12063                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12064                                         cmp->opcode = OP_LCOMPARE;
12065                                 else if (arg1->type == STACK_R4)
12066                                         cmp->opcode = OP_RCOMPARE;
12067                                 else if (arg1->type == STACK_R8)
12068                                         cmp->opcode = OP_FCOMPARE;
12069                                 else
12070                                         cmp->opcode = OP_ICOMPARE;
12071                                 MONO_ADD_INS (cfg->cbb, cmp);
12072                                 ins->type = STACK_I4;
12073                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12074                                 type_from_op (cfg, ins, arg1, arg2);
12075
12076                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12077                                         /*
12078                                          * The backends expect the fceq opcodes to do the
12079                                          * comparison too.
12080                                          */
12081                                         ins->sreg1 = cmp->sreg1;
12082                                         ins->sreg2 = cmp->sreg2;
12083                                         NULLIFY_INS (cmp);
12084                                 }
12085                                 MONO_ADD_INS (cfg->cbb, ins);
12086                                 *sp++ = ins;
12087                                 ip += 2;
12088                                 break;
12089                         }
12090                         case CEE_LDFTN: {
12091                                 MonoInst *argconst;
12092                                 MonoMethod *cil_method;
12093
12094                                 CHECK_STACK_OVF (1);
12095                                 CHECK_OPSIZE (6);
12096                                 n = read32 (ip + 2);
12097                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12098                                 CHECK_CFG_ERROR;
12099
12100                                 mono_class_init (cmethod->klass);
12101
12102                                 mono_save_token_info (cfg, image, n, cmethod);
12103
12104                                 context_used = mini_method_check_context_used (cfg, cmethod);
12105
12106                                 cil_method = cmethod;
12107                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12108                                         emit_method_access_failure (cfg, method, cil_method);
12109
12110                                 if (mono_security_core_clr_enabled ())
12111                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12112
12113                                 /*
12114                                  * Optimize the common case of ldftn+delegate creation
12115                                  */
12116                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12117                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12118                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12119                                                 MonoInst *target_ins, *handle_ins;
12120                                                 MonoMethod *invoke;
12121                                                 int invoke_context_used;
12122
12123                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12124                                                 if (!invoke || !mono_method_signature (invoke))
12125                                                         LOAD_ERROR;
12126
12127                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12128
12129                                                 target_ins = sp [-1];
12130
12131                                                 if (mono_security_core_clr_enabled ())
12132                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12133
12134                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12135                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12136                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12137                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12138                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12139                                                         }
12140                                                 }
12141
12142                                                 /* FIXME: SGEN support */
12143                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12144                                                         ip += 6;
12145                                                         if (cfg->verbose_level > 3)
12146                                                                 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));
12147                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12148                                                                 sp --;
12149                                                                 *sp = handle_ins;
12150                                                                 CHECK_CFG_EXCEPTION;
12151                                                                 ip += 5;
12152                                                                 sp ++;
12153                                                                 break;
12154                                                         }
12155                                                         ip -= 6;
12156                                                 }
12157                                         }
12158                                 }
12159
12160                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12161                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12162                                 *sp++ = ins;
12163
12164                                 ip += 6;
12165                                 inline_costs += 10 * num_calls++;
12166                                 break;
12167                         }
12168                         case CEE_LDVIRTFTN: {
12169                                 MonoInst *args [2];
12170
12171                                 CHECK_STACK (1);
12172                                 CHECK_OPSIZE (6);
12173                                 n = read32 (ip + 2);
12174                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12175                                 CHECK_CFG_ERROR;
12176
12177                                 mono_class_init (cmethod->klass);
12178
12179                                 context_used = mini_method_check_context_used (cfg, cmethod);
12180
12181                                 if (mono_security_core_clr_enabled ())
12182                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12183
12184                                 /*
12185                                  * Optimize the common case of ldvirtftn+delegate creation
12186                                  */
12187                                 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)) {
12188                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12189                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12190                                                 MonoInst *target_ins, *handle_ins;
12191                                                 MonoMethod *invoke;
12192                                                 int invoke_context_used;
12193                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12194
12195                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12196                                                 if (!invoke || !mono_method_signature (invoke))
12197                                                         LOAD_ERROR;
12198
12199                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12200
12201                                                 target_ins = sp [-1];
12202
12203                                                 if (mono_security_core_clr_enabled ())
12204                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12205
12206                                                 /* FIXME: SGEN support */
12207                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12208                                                         ip += 6;
12209                                                         if (cfg->verbose_level > 3)
12210                                                                 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));
12211                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12212                                                                 sp -= 2;
12213                                                                 *sp = handle_ins;
12214                                                                 CHECK_CFG_EXCEPTION;
12215                                                                 ip += 5;
12216                                                                 sp ++;
12217                                                                 break;
12218                                                         }
12219                                                         ip -= 6;
12220                                                 }
12221                                         }
12222                                 }
12223
12224                                 --sp;
12225                                 args [0] = *sp;
12226
12227                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12228                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12229
12230                                 if (context_used)
12231                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12232                                 else
12233                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12234
12235                                 ip += 6;
12236                                 inline_costs += 10 * num_calls++;
12237                                 break;
12238                         }
12239                         case CEE_LDARG:
12240                                 CHECK_STACK_OVF (1);
12241                                 CHECK_OPSIZE (4);
12242                                 n = read16 (ip + 2);
12243                                 CHECK_ARG (n);
12244                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12245                                 *sp++ = ins;
12246                                 ip += 4;
12247                                 break;
12248                         case CEE_LDARGA:
12249                                 CHECK_STACK_OVF (1);
12250                                 CHECK_OPSIZE (4);
12251                                 n = read16 (ip + 2);
12252                                 CHECK_ARG (n);
12253                                 NEW_ARGLOADA (cfg, ins, n);
12254                                 MONO_ADD_INS (cfg->cbb, ins);
12255                                 *sp++ = ins;
12256                                 ip += 4;
12257                                 break;
12258                         case CEE_STARG:
12259                                 CHECK_STACK (1);
12260                                 --sp;
12261                                 CHECK_OPSIZE (4);
12262                                 n = read16 (ip + 2);
12263                                 CHECK_ARG (n);
12264                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12265                                         UNVERIFIED;
12266                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12267                                 ip += 4;
12268                                 break;
12269                         case CEE_LDLOC:
12270                                 CHECK_STACK_OVF (1);
12271                                 CHECK_OPSIZE (4);
12272                                 n = read16 (ip + 2);
12273                                 CHECK_LOCAL (n);
12274                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12275                                 *sp++ = ins;
12276                                 ip += 4;
12277                                 break;
12278                         case CEE_LDLOCA: {
12279                                 unsigned char *tmp_ip;
12280                                 CHECK_STACK_OVF (1);
12281                                 CHECK_OPSIZE (4);
12282                                 n = read16 (ip + 2);
12283                                 CHECK_LOCAL (n);
12284
12285                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12286                                         ip = tmp_ip;
12287                                         inline_costs += 1;
12288                                         break;
12289                                 }
12290
12291                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12292                                 *sp++ = ins;
12293                                 ip += 4;
12294                                 break;
12295                         }
12296                         case CEE_STLOC:
12297                                 CHECK_STACK (1);
12298                                 --sp;
12299                                 CHECK_OPSIZE (4);
12300                                 n = read16 (ip + 2);
12301                                 CHECK_LOCAL (n);
12302                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12303                                         UNVERIFIED;
12304                                 emit_stloc_ir (cfg, sp, header, n);
12305                                 ip += 4;
12306                                 inline_costs += 1;
12307                                 break;
12308                         case CEE_LOCALLOC: {
12309                                 CHECK_STACK (1);
12310                                 MonoBasicBlock *non_zero_bb, *end_bb;
12311                                 int alloc_ptr = alloc_preg (cfg);
12312                                 --sp;
12313                                 if (sp != stack_start)
12314                                         UNVERIFIED;
12315                                 if (cfg->method != method)
12316                                         /*
12317                                          * Inlining this into a loop in a parent could lead to
12318                                          * stack overflows which is different behavior than the
12319                                          * non-inlined case, thus disable inlining in this case.
12320                                          */
12321                                         INLINE_FAILURE("localloc");
12322
12323                                 NEW_BBLOCK (cfg, non_zero_bb);
12324                                 NEW_BBLOCK (cfg, end_bb);
12325
12326                                 /* if size != zero */
12327                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12328                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12329
12330                                 //size is zero, so result is NULL
12331                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12332                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12333
12334                                 MONO_START_BB (cfg, non_zero_bb);
12335                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12336                                 ins->dreg = alloc_ptr;
12337                                 ins->sreg1 = sp [0]->dreg;
12338                                 ins->type = STACK_PTR;
12339                                 MONO_ADD_INS (cfg->cbb, ins);
12340
12341                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12342                                 if (init_locals)
12343                                         ins->flags |= MONO_INST_INIT;
12344
12345                                 MONO_START_BB (cfg, end_bb);
12346                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12347                                 ins->type = STACK_PTR;
12348
12349                                 *sp++ = ins;
12350                                 ip += 2;
12351                                 break;
12352                         }
12353                         case CEE_ENDFILTER: {
12354                                 MonoExceptionClause *clause, *nearest;
12355                                 int cc;
12356
12357                                 CHECK_STACK (1);
12358                                 --sp;
12359                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12360                                         UNVERIFIED;
12361                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12362                                 ins->sreg1 = (*sp)->dreg;
12363                                 MONO_ADD_INS (cfg->cbb, ins);
12364                                 start_new_bblock = 1;
12365                                 ip += 2;
12366
12367                                 nearest = NULL;
12368                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12369                                         clause = &header->clauses [cc];
12370                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12371                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12372                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12373                                                 nearest = clause;
12374                                 }
12375                                 g_assert (nearest);
12376                                 if ((ip - header->code) != nearest->handler_offset)
12377                                         UNVERIFIED;
12378
12379                                 break;
12380                         }
12381                         case CEE_UNALIGNED_:
12382                                 ins_flag |= MONO_INST_UNALIGNED;
12383                                 /* FIXME: record alignment? we can assume 1 for now */
12384                                 CHECK_OPSIZE (3);
12385                                 ip += 3;
12386                                 break;
12387                         case CEE_VOLATILE_:
12388                                 ins_flag |= MONO_INST_VOLATILE;
12389                                 ip += 2;
12390                                 break;
12391                         case CEE_TAIL_:
12392                                 ins_flag   |= MONO_INST_TAILCALL;
12393                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12394                                 /* Can't inline tail calls at this time */
12395                                 inline_costs += 100000;
12396                                 ip += 2;
12397                                 break;
12398                         case CEE_INITOBJ:
12399                                 CHECK_STACK (1);
12400                                 --sp;
12401                                 CHECK_OPSIZE (6);
12402                                 token = read32 (ip + 2);
12403                                 klass = mini_get_class (method, token, generic_context);
12404                                 CHECK_TYPELOAD (klass);
12405                                 if (generic_class_is_reference_type (cfg, klass))
12406                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12407                                 else
12408                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12409                                 ip += 6;
12410                                 inline_costs += 1;
12411                                 break;
12412                         case CEE_CONSTRAINED_:
12413                                 CHECK_OPSIZE (6);
12414                                 token = read32 (ip + 2);
12415                                 constrained_class = mini_get_class (method, token, generic_context);
12416                                 CHECK_TYPELOAD (constrained_class);
12417                                 ip += 6;
12418                                 break;
12419                         case CEE_CPBLK:
12420                                 CHECK_STACK (3);
12421                                 sp -= 3;
12422                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12423                                 ip += 2;
12424                                 ins_flag = 0;
12425                                 inline_costs += 1;
12426                                 break;
12427                         case CEE_INITBLK:
12428                                 CHECK_STACK (3);
12429                                 sp -= 3;
12430                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12431                                 ip += 2;
12432                                 ins_flag = 0;
12433                                 inline_costs += 1;
12434                                 break;
12435                         case CEE_NO_:
12436                                 CHECK_OPSIZE (3);
12437                                 if (ip [2] & 0x1)
12438                                         ins_flag |= MONO_INST_NOTYPECHECK;
12439                                 if (ip [2] & 0x2)
12440                                         ins_flag |= MONO_INST_NORANGECHECK;
12441                                 /* we ignore the no-nullcheck for now since we
12442                                  * really do it explicitly only when doing callvirt->call
12443                                  */
12444                                 ip += 3;
12445                                 break;
12446                         case CEE_RETHROW: {
12447                                 MonoInst *load;
12448                                 int handler_offset = -1;
12449
12450                                 for (i = 0; i < header->num_clauses; ++i) {
12451                                         MonoExceptionClause *clause = &header->clauses [i];
12452                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12453                                                 handler_offset = clause->handler_offset;
12454                                                 break;
12455                                         }
12456                                 }
12457
12458                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12459
12460                                 if (handler_offset == -1)
12461                                         UNVERIFIED;
12462
12463                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12464                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12465                                 ins->sreg1 = load->dreg;
12466                                 MONO_ADD_INS (cfg->cbb, ins);
12467
12468                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12469                                 MONO_ADD_INS (cfg->cbb, ins);
12470
12471                                 sp = stack_start;
12472                                 link_bblock (cfg, cfg->cbb, end_bblock);
12473                                 start_new_bblock = 1;
12474                                 ip += 2;
12475                                 break;
12476                         }
12477                         case CEE_SIZEOF: {
12478                                 guint32 val;
12479                                 int ialign;
12480
12481                                 CHECK_STACK_OVF (1);
12482                                 CHECK_OPSIZE (6);
12483                                 token = read32 (ip + 2);
12484                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12485                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12486                                         CHECK_CFG_ERROR;
12487
12488                                         val = mono_type_size (type, &ialign);
12489                                 } else {
12490                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12491                                         CHECK_TYPELOAD (klass);
12492
12493                                         val = mono_type_size (&klass->byval_arg, &ialign);
12494
12495                                         if (mini_is_gsharedvt_klass (klass))
12496                                                 GSHAREDVT_FAILURE (*ip);
12497                                 }
12498                                 EMIT_NEW_ICONST (cfg, ins, val);
12499                                 *sp++= ins;
12500                                 ip += 6;
12501                                 break;
12502                         }
12503                         case CEE_REFANYTYPE: {
12504                                 MonoInst *src_var, *src;
12505
12506                                 GSHAREDVT_FAILURE (*ip);
12507
12508                                 CHECK_STACK (1);
12509                                 --sp;
12510
12511                                 // FIXME:
12512                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12513                                 if (!src_var)
12514                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12515                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12516                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12517                                 *sp++ = ins;
12518                                 ip += 2;
12519                                 break;
12520                         }
12521                         case CEE_READONLY_:
12522                                 readonly = TRUE;
12523                                 ip += 2;
12524                                 break;
12525
12526                         case CEE_UNUSED56:
12527                         case CEE_UNUSED57:
12528                         case CEE_UNUSED70:
12529                         case CEE_UNUSED:
12530                         case CEE_UNUSED99:
12531                                 UNVERIFIED;
12532
12533                         default:
12534                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12535                                 UNVERIFIED;
12536                         }
12537                         break;
12538                 }
12539                 case CEE_UNUSED58:
12540                 case CEE_UNUSED1:
12541                         UNVERIFIED;
12542
12543                 default:
12544                         g_warning ("opcode 0x%02x not handled", *ip);
12545                         UNVERIFIED;
12546                 }
12547         }
12548         if (start_new_bblock != 1)
12549                 UNVERIFIED;
12550
12551         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12552         if (cfg->cbb->next_bb) {
12553                 /* This could already be set because of inlining, #693905 */
12554                 MonoBasicBlock *bb = cfg->cbb;
12555
12556                 while (bb->next_bb)
12557                         bb = bb->next_bb;
12558                 bb->next_bb = end_bblock;
12559         } else {
12560                 cfg->cbb->next_bb = end_bblock;
12561         }
12562
12563         if (cfg->method == method && cfg->domainvar) {
12564                 MonoInst *store;
12565                 MonoInst *get_domain;
12566
12567                 cfg->cbb = init_localsbb;
12568
12569                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12570                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12571                 MONO_ADD_INS (cfg->cbb, store);
12572         }
12573
12574 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12575         if (cfg->compile_aot)
12576                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12577                 mono_get_got_var (cfg);
12578 #endif
12579
12580         if (cfg->method == method && cfg->got_var)
12581                 mono_emit_load_got_addr (cfg);
12582
12583         if (init_localsbb) {
12584                 cfg->cbb = init_localsbb;
12585                 cfg->ip = NULL;
12586                 for (i = 0; i < header->num_locals; ++i) {
12587                         emit_init_local (cfg, i, header->locals [i], init_locals);
12588                 }
12589         }
12590
12591         if (cfg->init_ref_vars && cfg->method == method) {
12592                 /* Emit initialization for ref vars */
12593                 // FIXME: Avoid duplication initialization for IL locals.
12594                 for (i = 0; i < cfg->num_varinfo; ++i) {
12595                         MonoInst *ins = cfg->varinfo [i];
12596
12597                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12598                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12599                 }
12600         }
12601
12602         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12603                 cfg->cbb = init_localsbb;
12604                 emit_push_lmf (cfg);
12605         }
12606
12607         cfg->cbb = init_localsbb;
12608         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12609
12610         if (seq_points) {
12611                 MonoBasicBlock *bb;
12612
12613                 /*
12614                  * Make seq points at backward branch targets interruptable.
12615                  */
12616                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12617                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12618                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12619         }
12620
12621         /* Add a sequence point for method entry/exit events */
12622         if (seq_points && cfg->gen_sdb_seq_points) {
12623                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12624                 MONO_ADD_INS (init_localsbb, ins);
12625                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12626                 MONO_ADD_INS (cfg->bb_exit, ins);
12627         }
12628
12629         /*
12630          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12631          * the code they refer to was dead (#11880).
12632          */
12633         if (sym_seq_points) {
12634                 for (i = 0; i < header->code_size; ++i) {
12635                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12636                                 MonoInst *ins;
12637
12638                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12639                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12640                         }
12641                 }
12642         }
12643
12644         cfg->ip = NULL;
12645
12646         if (cfg->method == method) {
12647                 MonoBasicBlock *bb;
12648                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12649                         if (bb == cfg->bb_init)
12650                                 bb->region = -1;
12651                         else
12652                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12653                         if (cfg->spvars)
12654                                 mono_create_spvar_for_region (cfg, bb->region);
12655                         if (cfg->verbose_level > 2)
12656                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12657                 }
12658         } else {
12659                 MonoBasicBlock *bb;
12660                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12661                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12662                         bb->real_offset = inline_offset;
12663                 }
12664         }
12665
12666         if (inline_costs < 0) {
12667                 char *mname;
12668
12669                 /* Method is too large */
12670                 mname = mono_method_full_name (method, TRUE);
12671                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12672                 g_free (mname);
12673         }
12674
12675         if ((cfg->verbose_level > 2) && (cfg->method == method))
12676                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12677
12678         goto cleanup;
12679
12680 mono_error_exit:
12681         g_assert (!mono_error_ok (&cfg->error));
12682         goto cleanup;
12683
12684  exception_exit:
12685         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12686         goto cleanup;
12687
12688  unverified:
12689         set_exception_type_from_invalid_il (cfg, method, ip);
12690         goto cleanup;
12691
12692  cleanup:
12693         g_slist_free (class_inits);
12694         mono_basic_block_free (original_bb);
12695         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12696         if (cfg->exception_type)
12697                 return -1;
12698         else
12699                 return inline_costs;
12700 }
12701
12702 static int
12703 store_membase_reg_to_store_membase_imm (int opcode)
12704 {
12705         switch (opcode) {
12706         case OP_STORE_MEMBASE_REG:
12707                 return OP_STORE_MEMBASE_IMM;
12708         case OP_STOREI1_MEMBASE_REG:
12709                 return OP_STOREI1_MEMBASE_IMM;
12710         case OP_STOREI2_MEMBASE_REG:
12711                 return OP_STOREI2_MEMBASE_IMM;
12712         case OP_STOREI4_MEMBASE_REG:
12713                 return OP_STOREI4_MEMBASE_IMM;
12714         case OP_STOREI8_MEMBASE_REG:
12715                 return OP_STOREI8_MEMBASE_IMM;
12716         default:
12717                 g_assert_not_reached ();
12718         }
12719
12720         return -1;
12721 }
12722
12723 int
12724 mono_op_to_op_imm (int opcode)
12725 {
12726         switch (opcode) {
12727         case OP_IADD:
12728                 return OP_IADD_IMM;
12729         case OP_ISUB:
12730                 return OP_ISUB_IMM;
12731         case OP_IDIV:
12732                 return OP_IDIV_IMM;
12733         case OP_IDIV_UN:
12734                 return OP_IDIV_UN_IMM;
12735         case OP_IREM:
12736                 return OP_IREM_IMM;
12737         case OP_IREM_UN:
12738                 return OP_IREM_UN_IMM;
12739         case OP_IMUL:
12740                 return OP_IMUL_IMM;
12741         case OP_IAND:
12742                 return OP_IAND_IMM;
12743         case OP_IOR:
12744                 return OP_IOR_IMM;
12745         case OP_IXOR:
12746                 return OP_IXOR_IMM;
12747         case OP_ISHL:
12748                 return OP_ISHL_IMM;
12749         case OP_ISHR:
12750                 return OP_ISHR_IMM;
12751         case OP_ISHR_UN:
12752                 return OP_ISHR_UN_IMM;
12753
12754         case OP_LADD:
12755                 return OP_LADD_IMM;
12756         case OP_LSUB:
12757                 return OP_LSUB_IMM;
12758         case OP_LAND:
12759                 return OP_LAND_IMM;
12760         case OP_LOR:
12761                 return OP_LOR_IMM;
12762         case OP_LXOR:
12763                 return OP_LXOR_IMM;
12764         case OP_LSHL:
12765                 return OP_LSHL_IMM;
12766         case OP_LSHR:
12767                 return OP_LSHR_IMM;
12768         case OP_LSHR_UN:
12769                 return OP_LSHR_UN_IMM;
12770 #if SIZEOF_REGISTER == 8
12771         case OP_LREM:
12772                 return OP_LREM_IMM;
12773 #endif
12774
12775         case OP_COMPARE:
12776                 return OP_COMPARE_IMM;
12777         case OP_ICOMPARE:
12778                 return OP_ICOMPARE_IMM;
12779         case OP_LCOMPARE:
12780                 return OP_LCOMPARE_IMM;
12781
12782         case OP_STORE_MEMBASE_REG:
12783                 return OP_STORE_MEMBASE_IMM;
12784         case OP_STOREI1_MEMBASE_REG:
12785                 return OP_STOREI1_MEMBASE_IMM;
12786         case OP_STOREI2_MEMBASE_REG:
12787                 return OP_STOREI2_MEMBASE_IMM;
12788         case OP_STOREI4_MEMBASE_REG:
12789                 return OP_STOREI4_MEMBASE_IMM;
12790
12791 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12792         case OP_X86_PUSH:
12793                 return OP_X86_PUSH_IMM;
12794         case OP_X86_COMPARE_MEMBASE_REG:
12795                 return OP_X86_COMPARE_MEMBASE_IMM;
12796 #endif
12797 #if defined(TARGET_AMD64)
12798         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12799                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12800 #endif
12801         case OP_VOIDCALL_REG:
12802                 return OP_VOIDCALL;
12803         case OP_CALL_REG:
12804                 return OP_CALL;
12805         case OP_LCALL_REG:
12806                 return OP_LCALL;
12807         case OP_FCALL_REG:
12808                 return OP_FCALL;
12809         case OP_LOCALLOC:
12810                 return OP_LOCALLOC_IMM;
12811         }
12812
12813         return -1;
12814 }
12815
12816 static int
12817 ldind_to_load_membase (int opcode)
12818 {
12819         switch (opcode) {
12820         case CEE_LDIND_I1:
12821                 return OP_LOADI1_MEMBASE;
12822         case CEE_LDIND_U1:
12823                 return OP_LOADU1_MEMBASE;
12824         case CEE_LDIND_I2:
12825                 return OP_LOADI2_MEMBASE;
12826         case CEE_LDIND_U2:
12827                 return OP_LOADU2_MEMBASE;
12828         case CEE_LDIND_I4:
12829                 return OP_LOADI4_MEMBASE;
12830         case CEE_LDIND_U4:
12831                 return OP_LOADU4_MEMBASE;
12832         case CEE_LDIND_I:
12833                 return OP_LOAD_MEMBASE;
12834         case CEE_LDIND_REF:
12835                 return OP_LOAD_MEMBASE;
12836         case CEE_LDIND_I8:
12837                 return OP_LOADI8_MEMBASE;
12838         case CEE_LDIND_R4:
12839                 return OP_LOADR4_MEMBASE;
12840         case CEE_LDIND_R8:
12841                 return OP_LOADR8_MEMBASE;
12842         default:
12843                 g_assert_not_reached ();
12844         }
12845
12846         return -1;
12847 }
12848
12849 static int
12850 stind_to_store_membase (int opcode)
12851 {
12852         switch (opcode) {
12853         case CEE_STIND_I1:
12854                 return OP_STOREI1_MEMBASE_REG;
12855         case CEE_STIND_I2:
12856                 return OP_STOREI2_MEMBASE_REG;
12857         case CEE_STIND_I4:
12858                 return OP_STOREI4_MEMBASE_REG;
12859         case CEE_STIND_I:
12860         case CEE_STIND_REF:
12861                 return OP_STORE_MEMBASE_REG;
12862         case CEE_STIND_I8:
12863                 return OP_STOREI8_MEMBASE_REG;
12864         case CEE_STIND_R4:
12865                 return OP_STORER4_MEMBASE_REG;
12866         case CEE_STIND_R8:
12867                 return OP_STORER8_MEMBASE_REG;
12868         default:
12869                 g_assert_not_reached ();
12870         }
12871
12872         return -1;
12873 }
12874
12875 int
12876 mono_load_membase_to_load_mem (int opcode)
12877 {
12878         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12879 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12880         switch (opcode) {
12881         case OP_LOAD_MEMBASE:
12882                 return OP_LOAD_MEM;
12883         case OP_LOADU1_MEMBASE:
12884                 return OP_LOADU1_MEM;
12885         case OP_LOADU2_MEMBASE:
12886                 return OP_LOADU2_MEM;
12887         case OP_LOADI4_MEMBASE:
12888                 return OP_LOADI4_MEM;
12889         case OP_LOADU4_MEMBASE:
12890                 return OP_LOADU4_MEM;
12891 #if SIZEOF_REGISTER == 8
12892         case OP_LOADI8_MEMBASE:
12893                 return OP_LOADI8_MEM;
12894 #endif
12895         }
12896 #endif
12897
12898         return -1;
12899 }
12900
12901 static inline int
12902 op_to_op_dest_membase (int store_opcode, int opcode)
12903 {
12904 #if defined(TARGET_X86)
12905         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12906                 return -1;
12907
12908         switch (opcode) {
12909         case OP_IADD:
12910                 return OP_X86_ADD_MEMBASE_REG;
12911         case OP_ISUB:
12912                 return OP_X86_SUB_MEMBASE_REG;
12913         case OP_IAND:
12914                 return OP_X86_AND_MEMBASE_REG;
12915         case OP_IOR:
12916                 return OP_X86_OR_MEMBASE_REG;
12917         case OP_IXOR:
12918                 return OP_X86_XOR_MEMBASE_REG;
12919         case OP_ADD_IMM:
12920         case OP_IADD_IMM:
12921                 return OP_X86_ADD_MEMBASE_IMM;
12922         case OP_SUB_IMM:
12923         case OP_ISUB_IMM:
12924                 return OP_X86_SUB_MEMBASE_IMM;
12925         case OP_AND_IMM:
12926         case OP_IAND_IMM:
12927                 return OP_X86_AND_MEMBASE_IMM;
12928         case OP_OR_IMM:
12929         case OP_IOR_IMM:
12930                 return OP_X86_OR_MEMBASE_IMM;
12931         case OP_XOR_IMM:
12932         case OP_IXOR_IMM:
12933                 return OP_X86_XOR_MEMBASE_IMM;
12934         case OP_MOVE:
12935                 return OP_NOP;
12936         }
12937 #endif
12938
12939 #if defined(TARGET_AMD64)
12940         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12941                 return -1;
12942
12943         switch (opcode) {
12944         case OP_IADD:
12945                 return OP_X86_ADD_MEMBASE_REG;
12946         case OP_ISUB:
12947                 return OP_X86_SUB_MEMBASE_REG;
12948         case OP_IAND:
12949                 return OP_X86_AND_MEMBASE_REG;
12950         case OP_IOR:
12951                 return OP_X86_OR_MEMBASE_REG;
12952         case OP_IXOR:
12953                 return OP_X86_XOR_MEMBASE_REG;
12954         case OP_IADD_IMM:
12955                 return OP_X86_ADD_MEMBASE_IMM;
12956         case OP_ISUB_IMM:
12957                 return OP_X86_SUB_MEMBASE_IMM;
12958         case OP_IAND_IMM:
12959                 return OP_X86_AND_MEMBASE_IMM;
12960         case OP_IOR_IMM:
12961                 return OP_X86_OR_MEMBASE_IMM;
12962         case OP_IXOR_IMM:
12963                 return OP_X86_XOR_MEMBASE_IMM;
12964         case OP_LADD:
12965                 return OP_AMD64_ADD_MEMBASE_REG;
12966         case OP_LSUB:
12967                 return OP_AMD64_SUB_MEMBASE_REG;
12968         case OP_LAND:
12969                 return OP_AMD64_AND_MEMBASE_REG;
12970         case OP_LOR:
12971                 return OP_AMD64_OR_MEMBASE_REG;
12972         case OP_LXOR:
12973                 return OP_AMD64_XOR_MEMBASE_REG;
12974         case OP_ADD_IMM:
12975         case OP_LADD_IMM:
12976                 return OP_AMD64_ADD_MEMBASE_IMM;
12977         case OP_SUB_IMM:
12978         case OP_LSUB_IMM:
12979                 return OP_AMD64_SUB_MEMBASE_IMM;
12980         case OP_AND_IMM:
12981         case OP_LAND_IMM:
12982                 return OP_AMD64_AND_MEMBASE_IMM;
12983         case OP_OR_IMM:
12984         case OP_LOR_IMM:
12985                 return OP_AMD64_OR_MEMBASE_IMM;
12986         case OP_XOR_IMM:
12987         case OP_LXOR_IMM:
12988                 return OP_AMD64_XOR_MEMBASE_IMM;
12989         case OP_MOVE:
12990                 return OP_NOP;
12991         }
12992 #endif
12993
12994         return -1;
12995 }
12996
12997 static inline int
12998 op_to_op_store_membase (int store_opcode, int opcode)
12999 {
13000 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13001         switch (opcode) {
13002         case OP_ICEQ:
13003                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13004                         return OP_X86_SETEQ_MEMBASE;
13005         case OP_CNE:
13006                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13007                         return OP_X86_SETNE_MEMBASE;
13008         }
13009 #endif
13010
13011         return -1;
13012 }
13013
13014 static inline int
13015 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13016 {
13017 #ifdef TARGET_X86
13018         /* FIXME: This has sign extension issues */
13019         /*
13020         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13021                 return OP_X86_COMPARE_MEMBASE8_IMM;
13022         */
13023
13024         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13025                 return -1;
13026
13027         switch (opcode) {
13028         case OP_X86_PUSH:
13029                 return OP_X86_PUSH_MEMBASE;
13030         case OP_COMPARE_IMM:
13031         case OP_ICOMPARE_IMM:
13032                 return OP_X86_COMPARE_MEMBASE_IMM;
13033         case OP_COMPARE:
13034         case OP_ICOMPARE:
13035                 return OP_X86_COMPARE_MEMBASE_REG;
13036         }
13037 #endif
13038
13039 #ifdef TARGET_AMD64
13040         /* FIXME: This has sign extension issues */
13041         /*
13042         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13043                 return OP_X86_COMPARE_MEMBASE8_IMM;
13044         */
13045
13046         switch (opcode) {
13047         case OP_X86_PUSH:
13048                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13049                         return OP_X86_PUSH_MEMBASE;
13050                 break;
13051                 /* FIXME: This only works for 32 bit immediates
13052         case OP_COMPARE_IMM:
13053         case OP_LCOMPARE_IMM:
13054                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13055                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13056                 */
13057         case OP_ICOMPARE_IMM:
13058                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13059                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13060                 break;
13061         case OP_COMPARE:
13062         case OP_LCOMPARE:
13063                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13064                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13065                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13066                         return OP_AMD64_COMPARE_MEMBASE_REG;
13067                 break;
13068         case OP_ICOMPARE:
13069                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13070                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13071                 break;
13072         }
13073 #endif
13074
13075         return -1;
13076 }
13077
13078 static inline int
13079 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13080 {
13081 #ifdef TARGET_X86
13082         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13083                 return -1;
13084
13085         switch (opcode) {
13086         case OP_COMPARE:
13087         case OP_ICOMPARE:
13088                 return OP_X86_COMPARE_REG_MEMBASE;
13089         case OP_IADD:
13090                 return OP_X86_ADD_REG_MEMBASE;
13091         case OP_ISUB:
13092                 return OP_X86_SUB_REG_MEMBASE;
13093         case OP_IAND:
13094                 return OP_X86_AND_REG_MEMBASE;
13095         case OP_IOR:
13096                 return OP_X86_OR_REG_MEMBASE;
13097         case OP_IXOR:
13098                 return OP_X86_XOR_REG_MEMBASE;
13099         }
13100 #endif
13101
13102 #ifdef TARGET_AMD64
13103         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13104                 switch (opcode) {
13105                 case OP_ICOMPARE:
13106                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13107                 case OP_IADD:
13108                         return OP_X86_ADD_REG_MEMBASE;
13109                 case OP_ISUB:
13110                         return OP_X86_SUB_REG_MEMBASE;
13111                 case OP_IAND:
13112                         return OP_X86_AND_REG_MEMBASE;
13113                 case OP_IOR:
13114                         return OP_X86_OR_REG_MEMBASE;
13115                 case OP_IXOR:
13116                         return OP_X86_XOR_REG_MEMBASE;
13117                 }
13118         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13119                 switch (opcode) {
13120                 case OP_COMPARE:
13121                 case OP_LCOMPARE:
13122                         return OP_AMD64_COMPARE_REG_MEMBASE;
13123                 case OP_LADD:
13124                         return OP_AMD64_ADD_REG_MEMBASE;
13125                 case OP_LSUB:
13126                         return OP_AMD64_SUB_REG_MEMBASE;
13127                 case OP_LAND:
13128                         return OP_AMD64_AND_REG_MEMBASE;
13129                 case OP_LOR:
13130                         return OP_AMD64_OR_REG_MEMBASE;
13131                 case OP_LXOR:
13132                         return OP_AMD64_XOR_REG_MEMBASE;
13133                 }
13134         }
13135 #endif
13136
13137         return -1;
13138 }
13139
13140 int
13141 mono_op_to_op_imm_noemul (int opcode)
13142 {
13143         switch (opcode) {
13144 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13145         case OP_LSHR:
13146         case OP_LSHL:
13147         case OP_LSHR_UN:
13148                 return -1;
13149 #endif
13150 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13151         case OP_IDIV:
13152         case OP_IDIV_UN:
13153         case OP_IREM:
13154         case OP_IREM_UN:
13155                 return -1;
13156 #endif
13157 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13158         case OP_IMUL:
13159                 return -1;
13160 #endif
13161         default:
13162                 return mono_op_to_op_imm (opcode);
13163         }
13164 }
13165
13166 /**
13167  * mono_handle_global_vregs:
13168  *
13169  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13170  * for them.
13171  */
13172 void
13173 mono_handle_global_vregs (MonoCompile *cfg)
13174 {
13175         gint32 *vreg_to_bb;
13176         MonoBasicBlock *bb;
13177         int i, pos;
13178
13179         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13180
13181 #ifdef MONO_ARCH_SIMD_INTRINSICS
13182         if (cfg->uses_simd_intrinsics)
13183                 mono_simd_simplify_indirection (cfg);
13184 #endif
13185
13186         /* Find local vregs used in more than one bb */
13187         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13188                 MonoInst *ins = bb->code;
13189                 int block_num = bb->block_num;
13190
13191                 if (cfg->verbose_level > 2)
13192                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13193
13194                 cfg->cbb = bb;
13195                 for (; ins; ins = ins->next) {
13196                         const char *spec = INS_INFO (ins->opcode);
13197                         int regtype = 0, regindex;
13198                         gint32 prev_bb;
13199
13200                         if (G_UNLIKELY (cfg->verbose_level > 2))
13201                                 mono_print_ins (ins);
13202
13203                         g_assert (ins->opcode >= MONO_CEE_LAST);
13204
13205                         for (regindex = 0; regindex < 4; regindex ++) {
13206                                 int vreg = 0;
13207
13208                                 if (regindex == 0) {
13209                                         regtype = spec [MONO_INST_DEST];
13210                                         if (regtype == ' ')
13211                                                 continue;
13212                                         vreg = ins->dreg;
13213                                 } else if (regindex == 1) {
13214                                         regtype = spec [MONO_INST_SRC1];
13215                                         if (regtype == ' ')
13216                                                 continue;
13217                                         vreg = ins->sreg1;
13218                                 } else if (regindex == 2) {
13219                                         regtype = spec [MONO_INST_SRC2];
13220                                         if (regtype == ' ')
13221                                                 continue;
13222                                         vreg = ins->sreg2;
13223                                 } else if (regindex == 3) {
13224                                         regtype = spec [MONO_INST_SRC3];
13225                                         if (regtype == ' ')
13226                                                 continue;
13227                                         vreg = ins->sreg3;
13228                                 }
13229
13230 #if SIZEOF_REGISTER == 4
13231                                 /* In the LLVM case, the long opcodes are not decomposed */
13232                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13233                                         /*
13234                                          * Since some instructions reference the original long vreg,
13235                                          * and some reference the two component vregs, it is quite hard
13236                                          * to determine when it needs to be global. So be conservative.
13237                                          */
13238                                         if (!get_vreg_to_inst (cfg, vreg)) {
13239                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13240
13241                                                 if (cfg->verbose_level > 2)
13242                                                         printf ("LONG VREG R%d made global.\n", vreg);
13243                                         }
13244
13245                                         /*
13246                                          * Make the component vregs volatile since the optimizations can
13247                                          * get confused otherwise.
13248                                          */
13249                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13250                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13251                                 }
13252 #endif
13253
13254                                 g_assert (vreg != -1);
13255
13256                                 prev_bb = vreg_to_bb [vreg];
13257                                 if (prev_bb == 0) {
13258                                         /* 0 is a valid block num */
13259                                         vreg_to_bb [vreg] = block_num + 1;
13260                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13261                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13262                                                 continue;
13263
13264                                         if (!get_vreg_to_inst (cfg, vreg)) {
13265                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13266                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13267
13268                                                 switch (regtype) {
13269                                                 case 'i':
13270                                                         if (vreg_is_ref (cfg, vreg))
13271                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13272                                                         else
13273                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13274                                                         break;
13275                                                 case 'l':
13276                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13277                                                         break;
13278                                                 case 'f':
13279                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13280                                                         break;
13281                                                 case 'v':
13282                                                 case 'x':
13283                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13284                                                         break;
13285                                                 default:
13286                                                         g_assert_not_reached ();
13287                                                 }
13288                                         }
13289
13290                                         /* Flag as having been used in more than one bb */
13291                                         vreg_to_bb [vreg] = -1;
13292                                 }
13293                         }
13294                 }
13295         }
13296
13297         /* If a variable is used in only one bblock, convert it into a local vreg */
13298         for (i = 0; i < cfg->num_varinfo; i++) {
13299                 MonoInst *var = cfg->varinfo [i];
13300                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13301
13302                 switch (var->type) {
13303                 case STACK_I4:
13304                 case STACK_OBJ:
13305                 case STACK_PTR:
13306                 case STACK_MP:
13307                 case STACK_VTYPE:
13308 #if SIZEOF_REGISTER == 8
13309                 case STACK_I8:
13310 #endif
13311 #if !defined(TARGET_X86)
13312                 /* Enabling this screws up the fp stack on x86 */
13313                 case STACK_R8:
13314 #endif
13315                         if (mono_arch_is_soft_float ())
13316                                 break;
13317
13318                         /*
13319                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13320                                 break;
13321                         */
13322
13323                         /* Arguments are implicitly global */
13324                         /* Putting R4 vars into registers doesn't work currently */
13325                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13326                         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) {
13327                                 /*
13328                                  * Make that the variable's liveness interval doesn't contain a call, since
13329                                  * that would cause the lvreg to be spilled, making the whole optimization
13330                                  * useless.
13331                                  */
13332                                 /* This is too slow for JIT compilation */
13333 #if 0
13334                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13335                                         MonoInst *ins;
13336                                         int def_index, call_index, ins_index;
13337                                         gboolean spilled = FALSE;
13338
13339                                         def_index = -1;
13340                                         call_index = -1;
13341                                         ins_index = 0;
13342                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13343                                                 const char *spec = INS_INFO (ins->opcode);
13344
13345                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13346                                                         def_index = ins_index;
13347
13348                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13349                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13350                                                         if (call_index > def_index) {
13351                                                                 spilled = TRUE;
13352                                                                 break;
13353                                                         }
13354                                                 }
13355
13356                                                 if (MONO_IS_CALL (ins))
13357                                                         call_index = ins_index;
13358
13359                                                 ins_index ++;
13360                                         }
13361
13362                                         if (spilled)
13363                                                 break;
13364                                 }
13365 #endif
13366
13367                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13368                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13369                                 var->flags |= MONO_INST_IS_DEAD;
13370                                 cfg->vreg_to_inst [var->dreg] = NULL;
13371                         }
13372                         break;
13373                 }
13374         }
13375
13376         /*
13377          * Compress the varinfo and vars tables so the liveness computation is faster and
13378          * takes up less space.
13379          */
13380         pos = 0;
13381         for (i = 0; i < cfg->num_varinfo; ++i) {
13382                 MonoInst *var = cfg->varinfo [i];
13383                 if (pos < i && cfg->locals_start == i)
13384                         cfg->locals_start = pos;
13385                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13386                         if (pos < i) {
13387                                 cfg->varinfo [pos] = cfg->varinfo [i];
13388                                 cfg->varinfo [pos]->inst_c0 = pos;
13389                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13390                                 cfg->vars [pos].idx = pos;
13391 #if SIZEOF_REGISTER == 4
13392                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13393                                         /* Modify the two component vars too */
13394                                         MonoInst *var1;
13395
13396                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13397                                         var1->inst_c0 = pos;
13398                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13399                                         var1->inst_c0 = pos;
13400                                 }
13401 #endif
13402                         }
13403                         pos ++;
13404                 }
13405         }
13406         cfg->num_varinfo = pos;
13407         if (cfg->locals_start > cfg->num_varinfo)
13408                 cfg->locals_start = cfg->num_varinfo;
13409 }
13410
13411 /*
13412  * mono_allocate_gsharedvt_vars:
13413  *
13414  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13415  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13416  */
13417 void
13418 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13419 {
13420         int i;
13421
13422         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13423
13424         for (i = 0; i < cfg->num_varinfo; ++i) {
13425                 MonoInst *ins = cfg->varinfo [i];
13426                 int idx;
13427
13428                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13429                         if (i >= cfg->locals_start) {
13430                                 /* Local */
13431                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13432                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13433                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13434                                 ins->inst_imm = idx;
13435                         } else {
13436                                 /* Arg */
13437                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13438                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13439                         }
13440                 }
13441         }
13442 }
13443
13444 /**
13445  * mono_spill_global_vars:
13446  *
13447  *   Generate spill code for variables which are not allocated to registers,
13448  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13449  * code is generated which could be optimized by the local optimization passes.
13450  */
13451 void
13452 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13453 {
13454         MonoBasicBlock *bb;
13455         char spec2 [16];
13456         int orig_next_vreg;
13457         guint32 *vreg_to_lvreg;
13458         guint32 *lvregs;
13459         guint32 i, lvregs_len, lvregs_size;
13460         gboolean dest_has_lvreg = FALSE;
13461         MonoStackType stacktypes [128];
13462         MonoInst **live_range_start, **live_range_end;
13463         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13464
13465         *need_local_opts = FALSE;
13466
13467         memset (spec2, 0, sizeof (spec2));
13468
13469         /* FIXME: Move this function to mini.c */
13470         stacktypes ['i'] = STACK_PTR;
13471         stacktypes ['l'] = STACK_I8;
13472         stacktypes ['f'] = STACK_R8;
13473 #ifdef MONO_ARCH_SIMD_INTRINSICS
13474         stacktypes ['x'] = STACK_VTYPE;
13475 #endif
13476
13477 #if SIZEOF_REGISTER == 4
13478         /* Create MonoInsts for longs */
13479         for (i = 0; i < cfg->num_varinfo; i++) {
13480                 MonoInst *ins = cfg->varinfo [i];
13481
13482                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13483                         switch (ins->type) {
13484                         case STACK_R8:
13485                         case STACK_I8: {
13486                                 MonoInst *tree;
13487
13488                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13489                                         break;
13490
13491                                 g_assert (ins->opcode == OP_REGOFFSET);
13492
13493                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13494                                 g_assert (tree);
13495                                 tree->opcode = OP_REGOFFSET;
13496                                 tree->inst_basereg = ins->inst_basereg;
13497                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13498
13499                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13500                                 g_assert (tree);
13501                                 tree->opcode = OP_REGOFFSET;
13502                                 tree->inst_basereg = ins->inst_basereg;
13503                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13504                                 break;
13505                         }
13506                         default:
13507                                 break;
13508                         }
13509                 }
13510         }
13511 #endif
13512
13513         if (cfg->compute_gc_maps) {
13514                 /* registers need liveness info even for !non refs */
13515                 for (i = 0; i < cfg->num_varinfo; i++) {
13516                         MonoInst *ins = cfg->varinfo [i];
13517
13518                         if (ins->opcode == OP_REGVAR)
13519                                 ins->flags |= MONO_INST_GC_TRACK;
13520                 }
13521         }
13522
13523         /* FIXME: widening and truncation */
13524
13525         /*
13526          * As an optimization, when a variable allocated to the stack is first loaded into
13527          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13528          * the variable again.
13529          */
13530         orig_next_vreg = cfg->next_vreg;
13531         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13532         lvregs_size = 1024;
13533         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13534         lvregs_len = 0;
13535
13536         /*
13537          * These arrays contain the first and last instructions accessing a given
13538          * variable.
13539          * Since we emit bblocks in the same order we process them here, and we
13540          * don't split live ranges, these will precisely describe the live range of
13541          * the variable, i.e. the instruction range where a valid value can be found
13542          * in the variables location.
13543          * The live range is computed using the liveness info computed by the liveness pass.
13544          * We can't use vmv->range, since that is an abstract live range, and we need
13545          * one which is instruction precise.
13546          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13547          */
13548         /* FIXME: Only do this if debugging info is requested */
13549         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13550         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13551         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13552         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13553
13554         /* Add spill loads/stores */
13555         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13556                 MonoInst *ins;
13557
13558                 if (cfg->verbose_level > 2)
13559                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13560
13561                 /* Clear vreg_to_lvreg array */
13562                 for (i = 0; i < lvregs_len; i++)
13563                         vreg_to_lvreg [lvregs [i]] = 0;
13564                 lvregs_len = 0;
13565
13566                 cfg->cbb = bb;
13567                 MONO_BB_FOR_EACH_INS (bb, ins) {
13568                         const char *spec = INS_INFO (ins->opcode);
13569                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13570                         gboolean store, no_lvreg;
13571                         int sregs [MONO_MAX_SRC_REGS];
13572
13573                         if (G_UNLIKELY (cfg->verbose_level > 2))
13574                                 mono_print_ins (ins);
13575
13576                         if (ins->opcode == OP_NOP)
13577                                 continue;
13578
13579                         /*
13580                          * We handle LDADDR here as well, since it can only be decomposed
13581                          * when variable addresses are known.
13582                          */
13583                         if (ins->opcode == OP_LDADDR) {
13584                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13585
13586                                 if (var->opcode == OP_VTARG_ADDR) {
13587                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13588                                         MonoInst *vtaddr = var->inst_left;
13589                                         if (vtaddr->opcode == OP_REGVAR) {
13590                                                 ins->opcode = OP_MOVE;
13591                                                 ins->sreg1 = vtaddr->dreg;
13592                                         }
13593                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13594                                                 ins->opcode = OP_LOAD_MEMBASE;
13595                                                 ins->inst_basereg = vtaddr->inst_basereg;
13596                                                 ins->inst_offset = vtaddr->inst_offset;
13597                                         } else
13598                                                 NOT_IMPLEMENTED;
13599                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13600                                         /* gsharedvt arg passed by ref */
13601                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13602
13603                                         ins->opcode = OP_LOAD_MEMBASE;
13604                                         ins->inst_basereg = var->inst_basereg;
13605                                         ins->inst_offset = var->inst_offset;
13606                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13607                                         MonoInst *load, *load2, *load3;
13608                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13609                                         int reg1, reg2, reg3;
13610                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13611                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13612
13613                                         /*
13614                                          * gsharedvt local.
13615                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13616                                          */
13617
13618                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13619
13620                                         g_assert (info_var);
13621                                         g_assert (locals_var);
13622
13623                                         /* Mark the instruction used to compute the locals var as used */
13624                                         cfg->gsharedvt_locals_var_ins = NULL;
13625
13626                                         /* Load the offset */
13627                                         if (info_var->opcode == OP_REGOFFSET) {
13628                                                 reg1 = alloc_ireg (cfg);
13629                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13630                                         } else if (info_var->opcode == OP_REGVAR) {
13631                                                 load = NULL;
13632                                                 reg1 = info_var->dreg;
13633                                         } else {
13634                                                 g_assert_not_reached ();
13635                                         }
13636                                         reg2 = alloc_ireg (cfg);
13637                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13638                                         /* Load the locals area address */
13639                                         reg3 = alloc_ireg (cfg);
13640                                         if (locals_var->opcode == OP_REGOFFSET) {
13641                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13642                                         } else if (locals_var->opcode == OP_REGVAR) {
13643                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13644                                         } else {
13645                                                 g_assert_not_reached ();
13646                                         }
13647                                         /* Compute the address */
13648                                         ins->opcode = OP_PADD;
13649                                         ins->sreg1 = reg3;
13650                                         ins->sreg2 = reg2;
13651
13652                                         mono_bblock_insert_before_ins (bb, ins, load3);
13653                                         mono_bblock_insert_before_ins (bb, load3, load2);
13654                                         if (load)
13655                                                 mono_bblock_insert_before_ins (bb, load2, load);
13656                                 } else {
13657                                         g_assert (var->opcode == OP_REGOFFSET);
13658
13659                                         ins->opcode = OP_ADD_IMM;
13660                                         ins->sreg1 = var->inst_basereg;
13661                                         ins->inst_imm = var->inst_offset;
13662                                 }
13663
13664                                 *need_local_opts = TRUE;
13665                                 spec = INS_INFO (ins->opcode);
13666                         }
13667
13668                         if (ins->opcode < MONO_CEE_LAST) {
13669                                 mono_print_ins (ins);
13670                                 g_assert_not_reached ();
13671                         }
13672
13673                         /*
13674                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13675                          * src register.
13676                          * FIXME:
13677                          */
13678                         if (MONO_IS_STORE_MEMBASE (ins)) {
13679                                 tmp_reg = ins->dreg;
13680                                 ins->dreg = ins->sreg2;
13681                                 ins->sreg2 = tmp_reg;
13682                                 store = TRUE;
13683
13684                                 spec2 [MONO_INST_DEST] = ' ';
13685                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13686                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13687                                 spec2 [MONO_INST_SRC3] = ' ';
13688                                 spec = spec2;
13689                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13690                                 g_assert_not_reached ();
13691                         else
13692                                 store = FALSE;
13693                         no_lvreg = FALSE;
13694
13695                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13696                                 printf ("\t %.3s %d", spec, ins->dreg);
13697                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13698                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13699                                         printf (" %d", sregs [srcindex]);
13700                                 printf ("\n");
13701                         }
13702
13703                         /***************/
13704                         /*    DREG     */
13705                         /***************/
13706                         regtype = spec [MONO_INST_DEST];
13707                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13708                         prev_dreg = -1;
13709
13710                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13711                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13712                                 MonoInst *store_ins;
13713                                 int store_opcode;
13714                                 MonoInst *def_ins = ins;
13715                                 int dreg = ins->dreg; /* The original vreg */
13716
13717                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13718
13719                                 if (var->opcode == OP_REGVAR) {
13720                                         ins->dreg = var->dreg;
13721                                 } 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)) {
13722                                         /*
13723                                          * Instead of emitting a load+store, use a _membase opcode.
13724                                          */
13725                                         g_assert (var->opcode == OP_REGOFFSET);
13726                                         if (ins->opcode == OP_MOVE) {
13727                                                 NULLIFY_INS (ins);
13728                                                 def_ins = NULL;
13729                                         } else {
13730                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13731                                                 ins->inst_basereg = var->inst_basereg;
13732                                                 ins->inst_offset = var->inst_offset;
13733                                                 ins->dreg = -1;
13734                                         }
13735                                         spec = INS_INFO (ins->opcode);
13736                                 } else {
13737                                         guint32 lvreg;
13738
13739                                         g_assert (var->opcode == OP_REGOFFSET);
13740
13741                                         prev_dreg = ins->dreg;
13742
13743                                         /* Invalidate any previous lvreg for this vreg */
13744                                         vreg_to_lvreg [ins->dreg] = 0;
13745
13746                                         lvreg = 0;
13747
13748                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13749                                                 regtype = 'l';
13750                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13751                                         }
13752
13753                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13754
13755 #if SIZEOF_REGISTER != 8
13756                                         if (regtype == 'l') {
13757                                                 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));
13758                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13759                                                 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));
13760                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13761                                                 def_ins = store_ins;
13762                                         }
13763                                         else
13764 #endif
13765                                         {
13766                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13767
13768                                                 /* Try to fuse the store into the instruction itself */
13769                                                 /* FIXME: Add more instructions */
13770                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13771                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13772                                                         ins->inst_imm = ins->inst_c0;
13773                                                         ins->inst_destbasereg = var->inst_basereg;
13774                                                         ins->inst_offset = var->inst_offset;
13775                                                         spec = INS_INFO (ins->opcode);
13776                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13777                                                         ins->opcode = store_opcode;
13778                                                         ins->inst_destbasereg = var->inst_basereg;
13779                                                         ins->inst_offset = var->inst_offset;
13780
13781                                                         no_lvreg = TRUE;
13782
13783                                                         tmp_reg = ins->dreg;
13784                                                         ins->dreg = ins->sreg2;
13785                                                         ins->sreg2 = tmp_reg;
13786                                                         store = TRUE;
13787
13788                                                         spec2 [MONO_INST_DEST] = ' ';
13789                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13790                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13791                                                         spec2 [MONO_INST_SRC3] = ' ';
13792                                                         spec = spec2;
13793                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13794                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13795                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13796                                                         ins->dreg = -1;
13797                                                         ins->inst_basereg = var->inst_basereg;
13798                                                         ins->inst_offset = var->inst_offset;
13799                                                         spec = INS_INFO (ins->opcode);
13800                                                 } else {
13801                                                         /* printf ("INS: "); mono_print_ins (ins); */
13802                                                         /* Create a store instruction */
13803                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13804
13805                                                         /* Insert it after the instruction */
13806                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13807
13808                                                         def_ins = store_ins;
13809
13810                                                         /*
13811                                                          * We can't assign ins->dreg to var->dreg here, since the
13812                                                          * sregs could use it. So set a flag, and do it after
13813                                                          * the sregs.
13814                                                          */
13815                                                         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)))
13816                                                                 dest_has_lvreg = TRUE;
13817                                                 }
13818                                         }
13819                                 }
13820
13821                                 if (def_ins && !live_range_start [dreg]) {
13822                                         live_range_start [dreg] = def_ins;
13823                                         live_range_start_bb [dreg] = bb;
13824                                 }
13825
13826                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13827                                         MonoInst *tmp;
13828
13829                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13830                                         tmp->inst_c1 = dreg;
13831                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13832                                 }
13833                         }
13834
13835                         /************/
13836                         /*  SREGS   */
13837                         /************/
13838                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13839                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13840                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13841                                 sreg = sregs [srcindex];
13842
13843                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13844                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13845                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13846                                         MonoInst *use_ins = ins;
13847                                         MonoInst *load_ins;
13848                                         guint32 load_opcode;
13849
13850                                         if (var->opcode == OP_REGVAR) {
13851                                                 sregs [srcindex] = var->dreg;
13852                                                 //mono_inst_set_src_registers (ins, sregs);
13853                                                 live_range_end [sreg] = use_ins;
13854                                                 live_range_end_bb [sreg] = bb;
13855
13856                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13857                                                         MonoInst *tmp;
13858
13859                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13860                                                         /* var->dreg is a hreg */
13861                                                         tmp->inst_c1 = sreg;
13862                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13863                                                 }
13864
13865                                                 continue;
13866                                         }
13867
13868                                         g_assert (var->opcode == OP_REGOFFSET);
13869
13870                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13871
13872                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13873
13874                                         if (vreg_to_lvreg [sreg]) {
13875                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13876
13877                                                 /* The variable is already loaded to an lvreg */
13878                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13879                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13880                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13881                                                 //mono_inst_set_src_registers (ins, sregs);
13882                                                 continue;
13883                                         }
13884
13885                                         /* Try to fuse the load into the instruction */
13886                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13887                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13888                                                 sregs [0] = var->inst_basereg;
13889                                                 //mono_inst_set_src_registers (ins, sregs);
13890                                                 ins->inst_offset = var->inst_offset;
13891                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13892                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13893                                                 sregs [1] = var->inst_basereg;
13894                                                 //mono_inst_set_src_registers (ins, sregs);
13895                                                 ins->inst_offset = var->inst_offset;
13896                                         } else {
13897                                                 if (MONO_IS_REAL_MOVE (ins)) {
13898                                                         ins->opcode = OP_NOP;
13899                                                         sreg = ins->dreg;
13900                                                 } else {
13901                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13902
13903                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13904
13905                                                         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) {
13906                                                                 if (var->dreg == prev_dreg) {
13907                                                                         /*
13908                                                                          * sreg refers to the value loaded by the load
13909                                                                          * emitted below, but we need to use ins->dreg
13910                                                                          * since it refers to the store emitted earlier.
13911                                                                          */
13912                                                                         sreg = ins->dreg;
13913                                                                 }
13914                                                                 g_assert (sreg != -1);
13915                                                                 vreg_to_lvreg [var->dreg] = sreg;
13916                                                                 if (lvregs_len >= lvregs_size) {
13917                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13918                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13919                                                                         lvregs = new_lvregs;
13920                                                                         lvregs_size *= 2;
13921                                                                 }
13922                                                                 lvregs [lvregs_len ++] = var->dreg;
13923                                                         }
13924                                                 }
13925
13926                                                 sregs [srcindex] = sreg;
13927                                                 //mono_inst_set_src_registers (ins, sregs);
13928
13929 #if SIZEOF_REGISTER != 8
13930                                                 if (regtype == 'l') {
13931                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13932                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13933                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13934                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13935                                                         use_ins = load_ins;
13936                                                 }
13937                                                 else
13938 #endif
13939                                                 {
13940 #if SIZEOF_REGISTER == 4
13941                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13942 #endif
13943                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13944                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13945                                                         use_ins = load_ins;
13946                                                 }
13947                                         }
13948
13949                                         if (var->dreg < orig_next_vreg) {
13950                                                 live_range_end [var->dreg] = use_ins;
13951                                                 live_range_end_bb [var->dreg] = bb;
13952                                         }
13953
13954                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13955                                                 MonoInst *tmp;
13956
13957                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13958                                                 tmp->inst_c1 = var->dreg;
13959                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
13960                                         }
13961                                 }
13962                         }
13963                         mono_inst_set_src_registers (ins, sregs);
13964
13965                         if (dest_has_lvreg) {
13966                                 g_assert (ins->dreg != -1);
13967                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
13968                                 if (lvregs_len >= lvregs_size) {
13969                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13970                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13971                                         lvregs = new_lvregs;
13972                                         lvregs_size *= 2;
13973                                 }
13974                                 lvregs [lvregs_len ++] = prev_dreg;
13975                                 dest_has_lvreg = FALSE;
13976                         }
13977
13978                         if (store) {
13979                                 tmp_reg = ins->dreg;
13980                                 ins->dreg = ins->sreg2;
13981                                 ins->sreg2 = tmp_reg;
13982                         }
13983
13984                         if (MONO_IS_CALL (ins)) {
13985                                 /* Clear vreg_to_lvreg array */
13986                                 for (i = 0; i < lvregs_len; i++)
13987                                         vreg_to_lvreg [lvregs [i]] = 0;
13988                                 lvregs_len = 0;
13989                         } else if (ins->opcode == OP_NOP) {
13990                                 ins->dreg = -1;
13991                                 MONO_INST_NULLIFY_SREGS (ins);
13992                         }
13993
13994                         if (cfg->verbose_level > 2)
13995                                 mono_print_ins_index (1, ins);
13996                 }
13997
13998                 /* Extend the live range based on the liveness info */
13999                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14000                         for (i = 0; i < cfg->num_varinfo; i ++) {
14001                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14002
14003                                 if (vreg_is_volatile (cfg, vi->vreg))
14004                                         /* The liveness info is incomplete */
14005                                         continue;
14006
14007                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14008                                         /* Live from at least the first ins of this bb */
14009                                         live_range_start [vi->vreg] = bb->code;
14010                                         live_range_start_bb [vi->vreg] = bb;
14011                                 }
14012
14013                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14014                                         /* Live at least until the last ins of this bb */
14015                                         live_range_end [vi->vreg] = bb->last_ins;
14016                                         live_range_end_bb [vi->vreg] = bb;
14017                                 }
14018                         }
14019                 }
14020         }
14021
14022         /*
14023          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14024          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14025          */
14026         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14027                 for (i = 0; i < cfg->num_varinfo; ++i) {
14028                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14029                         MonoInst *ins;
14030
14031                         if (live_range_start [vreg]) {
14032                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14033                                 ins->inst_c0 = i;
14034                                 ins->inst_c1 = vreg;
14035                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14036                         }
14037                         if (live_range_end [vreg]) {
14038                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14039                                 ins->inst_c0 = i;
14040                                 ins->inst_c1 = vreg;
14041                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14042                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14043                                 else
14044                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14045                         }
14046                 }
14047         }
14048
14049         if (cfg->gsharedvt_locals_var_ins) {
14050                 /* Nullify if unused */
14051                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14052                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14053         }
14054
14055         g_free (live_range_start);
14056         g_free (live_range_end);
14057         g_free (live_range_start_bb);
14058         g_free (live_range_end_bb);
14059 }
14060
14061
14062 /**
14063  * FIXME:
14064  * - use 'iadd' instead of 'int_add'
14065  * - handling ovf opcodes: decompose in method_to_ir.
14066  * - unify iregs/fregs
14067  *   -> partly done, the missing parts are:
14068  *   - a more complete unification would involve unifying the hregs as well, so
14069  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14070  *     would no longer map to the machine hregs, so the code generators would need to
14071  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14072  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14073  *     fp/non-fp branches speeds it up by about 15%.
14074  * - use sext/zext opcodes instead of shifts
14075  * - add OP_ICALL
14076  * - get rid of TEMPLOADs if possible and use vregs instead
14077  * - clean up usage of OP_P/OP_ opcodes
14078  * - cleanup usage of DUMMY_USE
14079  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14080  *   stack
14081  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14082  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14083  * - make sure handle_stack_args () is called before the branch is emitted
14084  * - when the new IR is done, get rid of all unused stuff
14085  * - COMPARE/BEQ as separate instructions or unify them ?
14086  *   - keeping them separate allows specialized compare instructions like
14087  *     compare_imm, compare_membase
14088  *   - most back ends unify fp compare+branch, fp compare+ceq
14089  * - integrate mono_save_args into inline_method
14090  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14091  * - handle long shift opts on 32 bit platforms somehow: they require
14092  *   3 sregs (2 for arg1 and 1 for arg2)
14093  * - make byref a 'normal' type.
14094  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14095  *   variable if needed.
14096  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14097  *   like inline_method.
14098  * - remove inlining restrictions
14099  * - fix LNEG and enable cfold of INEG
14100  * - generalize x86 optimizations like ldelema as a peephole optimization
14101  * - add store_mem_imm for amd64
14102  * - optimize the loading of the interruption flag in the managed->native wrappers
14103  * - avoid special handling of OP_NOP in passes
14104  * - move code inserting instructions into one function/macro.
14105  * - try a coalescing phase after liveness analysis
14106  * - add float -> vreg conversion + local optimizations on !x86
14107  * - figure out how to handle decomposed branches during optimizations, ie.
14108  *   compare+branch, op_jump_table+op_br etc.
14109  * - promote RuntimeXHandles to vregs
14110  * - vtype cleanups:
14111  *   - add a NEW_VARLOADA_VREG macro
14112  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14113  *   accessing vtype fields.
14114  * - get rid of I8CONST on 64 bit platforms
14115  * - dealing with the increase in code size due to branches created during opcode
14116  *   decomposition:
14117  *   - use extended basic blocks
14118  *     - all parts of the JIT
14119  *     - handle_global_vregs () && local regalloc
14120  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14121  * - sources of increase in code size:
14122  *   - vtypes
14123  *   - long compares
14124  *   - isinst and castclass
14125  *   - lvregs not allocated to global registers even if used multiple times
14126  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14127  *   meaningful.
14128  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14129  * - add all micro optimizations from the old JIT
14130  * - put tree optimizations into the deadce pass
14131  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14132  *   specific function.
14133  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14134  *   fcompare + branchCC.
14135  * - create a helper function for allocating a stack slot, taking into account
14136  *   MONO_CFG_HAS_SPILLUP.
14137  * - merge r68207.
14138  * - optimize mono_regstate2_alloc_int/float.
14139  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14140  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14141  *   parts of the tree could be separated by other instructions, killing the tree
14142  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14143  *   instructions if the result of the load is used multiple times ?
14144  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14145  * - LAST MERGE: 108395.
14146  * - when returning vtypes in registers, generate IR and append it to the end of the
14147  *   last bb instead of doing it in the epilog.
14148  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14149  */
14150
14151 /*
14152
14153 NOTES
14154 -----
14155
14156 - When to decompose opcodes:
14157   - earlier: this makes some optimizations hard to implement, since the low level IR
14158   no longer contains the neccessary information. But it is easier to do.
14159   - later: harder to implement, enables more optimizations.
14160 - Branches inside bblocks:
14161   - created when decomposing complex opcodes.
14162     - branches to another bblock: harmless, but not tracked by the branch
14163       optimizations, so need to branch to a label at the start of the bblock.
14164     - branches to inside the same bblock: very problematic, trips up the local
14165       reg allocator. Can be fixed by spitting the current bblock, but that is a
14166       complex operation, since some local vregs can become global vregs etc.
14167 - Local/global vregs:
14168   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14169     local register allocator.
14170   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14171     structure, created by mono_create_var (). Assigned to hregs or the stack by
14172     the global register allocator.
14173 - When to do optimizations like alu->alu_imm:
14174   - earlier -> saves work later on since the IR will be smaller/simpler
14175   - later -> can work on more instructions
14176 - Handling of valuetypes:
14177   - When a vtype is pushed on the stack, a new temporary is created, an
14178     instruction computing its address (LDADDR) is emitted and pushed on
14179     the stack. Need to optimize cases when the vtype is used immediately as in
14180     argument passing, stloc etc.
14181 - Instead of the to_end stuff in the old JIT, simply call the function handling
14182   the values on the stack before emitting the last instruction of the bb.
14183 */
14184
14185 #endif /* !DISABLE_JIT */