mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var || cfg->llvm_only)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static int
1768 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1769 {
1770 handle_enum:
1771         type = mini_get_underlying_type (type);
1772         switch (type->type) {
1773         case MONO_TYPE_VOID:
1774                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1775         case MONO_TYPE_I1:
1776         case MONO_TYPE_U1:
1777         case MONO_TYPE_I2:
1778         case MONO_TYPE_U2:
1779         case MONO_TYPE_I4:
1780         case MONO_TYPE_U4:
1781                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1782         case MONO_TYPE_I:
1783         case MONO_TYPE_U:
1784         case MONO_TYPE_PTR:
1785         case MONO_TYPE_FNPTR:
1786                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1787         case MONO_TYPE_CLASS:
1788         case MONO_TYPE_STRING:
1789         case MONO_TYPE_OBJECT:
1790         case MONO_TYPE_SZARRAY:
1791         case MONO_TYPE_ARRAY:
1792                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1793         case MONO_TYPE_I8:
1794         case MONO_TYPE_U8:
1795                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1796         case MONO_TYPE_R4:
1797                 if (cfg->r4fp)
1798                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1799                 else
1800                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1801         case MONO_TYPE_R8:
1802                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1803         case MONO_TYPE_VALUETYPE:
1804                 if (type->data.klass->enumtype) {
1805                         type = mono_class_enum_basetype (type->data.klass);
1806                         goto handle_enum;
1807                 } else
1808                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1809         case MONO_TYPE_TYPEDBYREF:
1810                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1811         case MONO_TYPE_GENERICINST:
1812                 type = &type->data.generic_class->container_class->byval_arg;
1813                 goto handle_enum;
1814         case MONO_TYPE_VAR:
1815         case MONO_TYPE_MVAR:
1816                 /* gsharedvt */
1817                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1818         default:
1819                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1820         }
1821         return -1;
1822 }
1823
1824 //XXX this ignores if t is byref
1825 #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)))))
1826
1827 /*
1828  * target_type_is_incompatible:
1829  * @cfg: MonoCompile context
1830  *
1831  * Check that the item @arg on the evaluation stack can be stored
1832  * in the target type (can be a local, or field, etc).
1833  * The cfg arg can be used to check if we need verification or just
1834  * validity checks.
1835  *
1836  * Returns: non-0 value if arg can't be stored on a target.
1837  */
1838 static int
1839 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1840 {
1841         MonoType *simple_type;
1842         MonoClass *klass;
1843
1844         if (target->byref) {
1845                 /* FIXME: check that the pointed to types match */
1846                 if (arg->type == STACK_MP) {
1847                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1848                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1849                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1850
1851                         /* if the target is native int& or same type */
1852                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1853                                 return 0;
1854
1855                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1856                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1857                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1858                                 return 0;
1859                         return 1;
1860                 }
1861                 if (arg->type == STACK_PTR)
1862                         return 0;
1863                 return 1;
1864         }
1865
1866         simple_type = mini_get_underlying_type (target);
1867         switch (simple_type->type) {
1868         case MONO_TYPE_VOID:
1869                 return 1;
1870         case MONO_TYPE_I1:
1871         case MONO_TYPE_U1:
1872         case MONO_TYPE_I2:
1873         case MONO_TYPE_U2:
1874         case MONO_TYPE_I4:
1875         case MONO_TYPE_U4:
1876                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1877                         return 1;
1878                 return 0;
1879         case MONO_TYPE_PTR:
1880                 /* STACK_MP is needed when setting pinned locals */
1881                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1882                         return 1;
1883                 return 0;
1884         case MONO_TYPE_I:
1885         case MONO_TYPE_U:
1886         case MONO_TYPE_FNPTR:
1887                 /*
1888                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1889                  * in native int. (#688008).
1890                  */
1891                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1892                         return 1;
1893                 return 0;
1894         case MONO_TYPE_CLASS:
1895         case MONO_TYPE_STRING:
1896         case MONO_TYPE_OBJECT:
1897         case MONO_TYPE_SZARRAY:
1898         case MONO_TYPE_ARRAY:
1899                 if (arg->type != STACK_OBJ)
1900                         return 1;
1901                 /* FIXME: check type compatibility */
1902                 return 0;
1903         case MONO_TYPE_I8:
1904         case MONO_TYPE_U8:
1905                 if (arg->type != STACK_I8)
1906                         return 1;
1907                 return 0;
1908         case MONO_TYPE_R4:
1909                 if (arg->type != cfg->r4_stack_type)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_R8:
1913                 if (arg->type != STACK_R8)
1914                         return 1;
1915                 return 0;
1916         case MONO_TYPE_VALUETYPE:
1917                 if (arg->type != STACK_VTYPE)
1918                         return 1;
1919                 klass = mono_class_from_mono_type (simple_type);
1920                 if (klass != arg->klass)
1921                         return 1;
1922                 return 0;
1923         case MONO_TYPE_TYPEDBYREF:
1924                 if (arg->type != STACK_VTYPE)
1925                         return 1;
1926                 klass = mono_class_from_mono_type (simple_type);
1927                 if (klass != arg->klass)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_GENERICINST:
1931                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1932                         MonoClass *target_class;
1933                         if (arg->type != STACK_VTYPE)
1934                                 return 1;
1935                         klass = mono_class_from_mono_type (simple_type);
1936                         target_class = mono_class_from_mono_type (target);
1937                         /* The second cases is needed when doing partial sharing */
1938                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1939                                 return 1;
1940                         return 0;
1941                 } else {
1942                         if (arg->type != STACK_OBJ)
1943                                 return 1;
1944                         /* FIXME: check type compatibility */
1945                         return 0;
1946                 }
1947         case MONO_TYPE_VAR:
1948         case MONO_TYPE_MVAR:
1949                 g_assert (cfg->gshared);
1950                 if (mini_type_var_is_vt (simple_type)) {
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                 } else {
1954                         if (arg->type != STACK_OBJ)
1955                                 return 1;
1956                 }
1957                 return 0;
1958         default:
1959                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1960         }
1961         return 1;
1962 }
1963
1964 /*
1965  * Prepare arguments for passing to a function call.
1966  * Return a non-zero value if the arguments can't be passed to the given
1967  * signature.
1968  * The type checks are not yet complete and some conversions may need
1969  * casts on 32 or 64 bit architectures.
1970  *
1971  * FIXME: implement this using target_type_is_incompatible ()
1972  */
1973 static int
1974 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1975 {
1976         MonoType *simple_type;
1977         int i;
1978
1979         if (sig->hasthis) {
1980                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1981                         return 1;
1982                 args++;
1983         }
1984         for (i = 0; i < sig->param_count; ++i) {
1985                 if (sig->params [i]->byref) {
1986                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
1987                                 return 1;
1988                         continue;
1989                 }
1990                 simple_type = mini_get_underlying_type (sig->params [i]);
1991 handle_enum:
1992                 switch (simple_type->type) {
1993                 case MONO_TYPE_VOID:
1994                         return 1;
1995                         continue;
1996                 case MONO_TYPE_I1:
1997                 case MONO_TYPE_U1:
1998                 case MONO_TYPE_I2:
1999                 case MONO_TYPE_U2:
2000                 case MONO_TYPE_I4:
2001                 case MONO_TYPE_U4:
2002                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2003                                 return 1;
2004                         continue;
2005                 case MONO_TYPE_I:
2006                 case MONO_TYPE_U:
2007                 case MONO_TYPE_PTR:
2008                 case MONO_TYPE_FNPTR:
2009                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2010                                 return 1;
2011                         continue;
2012                 case MONO_TYPE_CLASS:
2013                 case MONO_TYPE_STRING:
2014                 case MONO_TYPE_OBJECT:
2015                 case MONO_TYPE_SZARRAY:
2016                 case MONO_TYPE_ARRAY:
2017                         if (args [i]->type != STACK_OBJ)
2018                                 return 1;
2019                         continue;
2020                 case MONO_TYPE_I8:
2021                 case MONO_TYPE_U8:
2022                         if (args [i]->type != STACK_I8)
2023                                 return 1;
2024                         continue;
2025                 case MONO_TYPE_R4:
2026                         if (args [i]->type != cfg->r4_stack_type)
2027                                 return 1;
2028                         continue;
2029                 case MONO_TYPE_R8:
2030                         if (args [i]->type != STACK_R8)
2031                                 return 1;
2032                         continue;
2033                 case MONO_TYPE_VALUETYPE:
2034                         if (simple_type->data.klass->enumtype) {
2035                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2036                                 goto handle_enum;
2037                         }
2038                         if (args [i]->type != STACK_VTYPE)
2039                                 return 1;
2040                         continue;
2041                 case MONO_TYPE_TYPEDBYREF:
2042                         if (args [i]->type != STACK_VTYPE)
2043                                 return 1;
2044                         continue;
2045                 case MONO_TYPE_GENERICINST:
2046                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2047                         goto handle_enum;
2048                 case MONO_TYPE_VAR:
2049                 case MONO_TYPE_MVAR:
2050                         /* gsharedvt */
2051                         if (args [i]->type != STACK_VTYPE)
2052                                 return 1;
2053                         continue;
2054                 default:
2055                         g_error ("unknown type 0x%02x in check_call_signature",
2056                                  simple_type->type);
2057                 }
2058         }
2059         return 0;
2060 }
2061
2062 static int
2063 callvirt_to_call (int opcode)
2064 {
2065         switch (opcode) {
2066         case OP_CALL_MEMBASE:
2067                 return OP_CALL;
2068         case OP_VOIDCALL_MEMBASE:
2069                 return OP_VOIDCALL;
2070         case OP_FCALL_MEMBASE:
2071                 return OP_FCALL;
2072         case OP_RCALL_MEMBASE:
2073                 return OP_RCALL;
2074         case OP_VCALL_MEMBASE:
2075                 return OP_VCALL;
2076         case OP_LCALL_MEMBASE:
2077                 return OP_LCALL;
2078         default:
2079                 g_assert_not_reached ();
2080         }
2081
2082         return -1;
2083 }
2084
2085 static int
2086 callvirt_to_call_reg (int opcode)
2087 {
2088         switch (opcode) {
2089         case OP_CALL_MEMBASE:
2090                 return OP_CALL_REG;
2091         case OP_VOIDCALL_MEMBASE:
2092                 return OP_VOIDCALL_REG;
2093         case OP_FCALL_MEMBASE:
2094                 return OP_FCALL_REG;
2095         case OP_RCALL_MEMBASE:
2096                 return OP_RCALL_REG;
2097         case OP_VCALL_MEMBASE:
2098                 return OP_VCALL_REG;
2099         case OP_LCALL_MEMBASE:
2100                 return OP_LCALL_REG;
2101         default:
2102                 g_assert_not_reached ();
2103         }
2104
2105         return -1;
2106 }
2107
2108 /* Either METHOD or IMT_ARG needs to be set */
2109 static void
2110 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2111 {
2112         int method_reg;
2113
2114         if (COMPILE_LLVM (cfg)) {
2115                 if (imt_arg) {
2116                         method_reg = alloc_preg (cfg);
2117                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2118                 } else {
2119                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2120                         method_reg = ins->dreg;
2121                 }
2122
2123 #ifdef ENABLE_LLVM
2124                 call->imt_arg_reg = method_reg;
2125 #endif
2126                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2127                 return;
2128         }
2129
2130         if (imt_arg) {
2131                 method_reg = alloc_preg (cfg);
2132                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2133         } else {
2134                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2135                 method_reg = ins->dreg;
2136         }
2137
2138         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2139 }
2140
2141 static MonoJumpInfo *
2142 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2143 {
2144         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2145
2146         ji->ip.i = ip;
2147         ji->type = type;
2148         ji->data.target = target;
2149
2150         return ji;
2151 }
2152
2153 int
2154 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2155 {
2156         if (cfg->gshared)
2157                 return mono_class_check_context_used (klass);
2158         else
2159                 return 0;
2160 }
2161
2162 static int
2163 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2164 {
2165         if (cfg->gshared)
2166                 return mono_method_check_context_used (method);
2167         else
2168                 return 0;
2169 }
2170
2171 /*
2172  * check_method_sharing:
2173  *
2174  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2175  */
2176 static void
2177 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2178 {
2179         gboolean pass_vtable = FALSE;
2180         gboolean pass_mrgctx = FALSE;
2181
2182         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2183                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2184                 gboolean sharable = FALSE;
2185
2186                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2187                         sharable = TRUE;
2188
2189                 /*
2190                  * Pass vtable iff target method might
2191                  * be shared, which means that sharing
2192                  * is enabled for its class and its
2193                  * context is sharable (and it's not a
2194                  * generic method).
2195                  */
2196                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2197                         pass_vtable = TRUE;
2198         }
2199
2200         if (mini_method_get_context (cmethod) &&
2201                 mini_method_get_context (cmethod)->method_inst) {
2202                 g_assert (!pass_vtable);
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2205                         pass_mrgctx = TRUE;
2206                 } else {
2207                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2208                                 pass_mrgctx = TRUE;
2209                 }
2210         }
2211
2212         if (out_pass_vtable)
2213                 *out_pass_vtable = pass_vtable;
2214         if (out_pass_mrgctx)
2215                 *out_pass_mrgctx = pass_mrgctx;
2216 }
2217
2218 inline static MonoCallInst *
2219 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2220                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline, MonoMethod *target)
2221 {
2222         MonoType *sig_ret;
2223         MonoCallInst *call;
2224 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2225         int i;
2226 #endif
2227
2228         if (cfg->llvm_only)
2229                 tail = FALSE;
2230
2231         if (tail) {
2232                 mini_profiler_emit_tail_call (cfg, target);
2233
2234                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2235         } else
2236                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2237
2238         call->args = args;
2239         call->signature = sig;
2240         call->rgctx_reg = rgctx;
2241         sig_ret = mini_get_underlying_type (sig->ret);
2242
2243         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2244
2245         if (tail) {
2246                 if (mini_type_is_vtype (sig_ret)) {
2247                         call->vret_var = cfg->vret_addr;
2248                         //g_assert_not_reached ();
2249                 }
2250         } else if (mini_type_is_vtype (sig_ret)) {
2251                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2252                 MonoInst *loada;
2253
2254                 temp->backend.is_pinvoke = sig->pinvoke;
2255
2256                 /*
2257                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2258                  * address of return value to increase optimization opportunities.
2259                  * Before vtype decomposition, the dreg of the call ins itself represents the
2260                  * fact the call modifies the return value. After decomposition, the call will
2261                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2262                  * will be transformed into an LDADDR.
2263                  */
2264                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2265                 loada->dreg = alloc_preg (cfg);
2266                 loada->inst_p0 = temp;
2267                 /* We reference the call too since call->dreg could change during optimization */
2268                 loada->inst_p1 = call;
2269                 MONO_ADD_INS (cfg->cbb, loada);
2270
2271                 call->inst.dreg = temp->dreg;
2272
2273                 call->vret_var = loada;
2274         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2275                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2276
2277 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2278         if (COMPILE_SOFT_FLOAT (cfg)) {
2279                 /*
2280                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2281                  * an icall, but that cannot be done during the call sequence since it would clobber
2282                  * the call registers + the stack. So we do it before emitting the call.
2283                  */
2284                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2285                         MonoType *t;
2286                         MonoInst *in = call->args [i];
2287
2288                         if (i >= sig->hasthis)
2289                                 t = sig->params [i - sig->hasthis];
2290                         else
2291                                 t = &mono_defaults.int_class->byval_arg;
2292                         t = mono_type_get_underlying_type (t);
2293
2294                         if (!t->byref && t->type == MONO_TYPE_R4) {
2295                                 MonoInst *iargs [1];
2296                                 MonoInst *conv;
2297
2298                                 iargs [0] = in;
2299                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2300
2301                                 /* The result will be in an int vreg */
2302                                 call->args [i] = conv;
2303                         }
2304                 }
2305         }
2306 #endif
2307
2308         call->need_unbox_trampoline = unbox_trampoline;
2309
2310 #ifdef ENABLE_LLVM
2311         if (COMPILE_LLVM (cfg))
2312                 mono_llvm_emit_call (cfg, call);
2313         else
2314                 mono_arch_emit_call (cfg, call);
2315 #else
2316         mono_arch_emit_call (cfg, call);
2317 #endif
2318
2319         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2320         cfg->flags |= MONO_CFG_HAS_CALLS;
2321
2322         return call;
2323 }
2324
2325 static void
2326 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2327 {
2328         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2329         cfg->uses_rgctx_reg = TRUE;
2330         call->rgctx_reg = TRUE;
2331 #ifdef ENABLE_LLVM
2332         call->rgctx_arg_reg = rgctx_reg;
2333 #endif
2334 }
2335
2336 MonoInst*
2337 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2338 {
2339         MonoCallInst *call;
2340         MonoInst *ins;
2341         int rgctx_reg = -1;
2342         gboolean check_sp = FALSE;
2343
2344         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2345                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2346
2347                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2348                         check_sp = TRUE;
2349         }
2350
2351         if (rgctx_arg) {
2352                 rgctx_reg = mono_alloc_preg (cfg);
2353                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2354         }
2355
2356         if (check_sp) {
2357                 if (!cfg->stack_inbalance_var)
2358                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2359
2360                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2361                 ins->dreg = cfg->stack_inbalance_var->dreg;
2362                 MONO_ADD_INS (cfg->cbb, ins);
2363         }
2364
2365         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE, NULL);
2366
2367         call->inst.sreg1 = addr->dreg;
2368
2369         if (imt_arg)
2370                 emit_imt_argument (cfg, call, NULL, imt_arg);
2371
2372         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2373
2374         if (check_sp) {
2375                 int sp_reg;
2376
2377                 sp_reg = mono_alloc_preg (cfg);
2378
2379                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2380                 ins->dreg = sp_reg;
2381                 MONO_ADD_INS (cfg->cbb, ins);
2382
2383                 /* Restore the stack so we don't crash when throwing the exception */
2384                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2385                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2386                 MONO_ADD_INS (cfg->cbb, ins);
2387
2388                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2389                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2390         }
2391
2392         if (rgctx_arg)
2393                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2394
2395         return (MonoInst*)call;
2396 }
2397
2398 static MonoInst*
2399 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2400
2401 static MonoInst*
2402 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2403                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2404 {
2405 #ifndef DISABLE_REMOTING
2406         gboolean might_be_remote = FALSE;
2407 #endif
2408         gboolean virtual_ = this_ins != NULL;
2409         gboolean enable_for_aot = TRUE;
2410         int context_used;
2411         MonoCallInst *call;
2412         MonoInst *call_target = NULL;
2413         int rgctx_reg = 0;
2414         gboolean need_unbox_trampoline;
2415
2416         if (!sig)
2417                 sig = mono_method_signature (method);
2418
2419         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2420                 g_assert_not_reached ();
2421
2422         if (rgctx_arg) {
2423                 rgctx_reg = mono_alloc_preg (cfg);
2424                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2425         }
2426
2427         if (method->string_ctor) {
2428                 /* Create the real signature */
2429                 /* FIXME: Cache these */
2430                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2431                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2432
2433                 sig = ctor_sig;
2434         }
2435
2436         context_used = mini_method_check_context_used (cfg, method);
2437
2438 #ifndef DISABLE_REMOTING
2439         might_be_remote = this_ins && sig->hasthis &&
2440                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2441                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2442
2443         if (might_be_remote && context_used) {
2444                 MonoInst *addr;
2445
2446                 g_assert (cfg->gshared);
2447
2448                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2449
2450                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2451         }
2452 #endif
2453
2454         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2455                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2456
2457         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2458
2459         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline, method);
2460
2461 #ifndef DISABLE_REMOTING
2462         if (might_be_remote)
2463                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2464         else
2465 #endif
2466                 call->method = method;
2467         call->inst.flags |= MONO_INST_HAS_METHOD;
2468         call->inst.inst_left = this_ins;
2469         call->tail_call = tail;
2470
2471         if (virtual_) {
2472                 int vtable_reg, slot_reg, this_reg;
2473                 int offset;
2474
2475                 this_reg = this_ins->dreg;
2476
2477                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2478                         MonoInst *dummy_use;
2479
2480                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2481
2482                         /* Make a call to delegate->invoke_impl */
2483                         call->inst.inst_basereg = this_reg;
2484                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2485                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2486
2487                         /* We must emit a dummy use here because the delegate trampoline will
2488                         replace the 'this' argument with the delegate target making this activation
2489                         no longer a root for the delegate.
2490                         This is an issue for delegates that target collectible code such as dynamic
2491                         methods of GC'able assemblies.
2492
2493                         For a test case look into #667921.
2494
2495                         FIXME: a dummy use is not the best way to do it as the local register allocator
2496                         will put it on a caller save register and spil it around the call.
2497                         Ideally, we would either put it on a callee save register or only do the store part.
2498                          */
2499                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2500
2501                         return (MonoInst*)call;
2502                 }
2503
2504                 if ((!cfg->compile_aot || enable_for_aot) &&
2505                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2506                          (MONO_METHOD_IS_FINAL (method) &&
2507                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2508                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2509                         /*
2510                          * the method is not virtual, we just need to ensure this is not null
2511                          * and then we can call the method directly.
2512                          */
2513 #ifndef DISABLE_REMOTING
2514                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2515                                 /*
2516                                  * The check above ensures method is not gshared, this is needed since
2517                                  * gshared methods can't have wrappers.
2518                                  */
2519                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2520                         }
2521 #endif
2522
2523                         if (!method->string_ctor)
2524                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2525
2526                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2527                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2528                         /*
2529                          * the method is virtual, but we can statically dispatch since either
2530                          * it's class or the method itself are sealed.
2531                          * But first we need to ensure it's not a null reference.
2532                          */
2533                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2534
2535                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2536                 } else if (call_target) {
2537                         vtable_reg = alloc_preg (cfg);
2538                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2539
2540                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2541                         call->inst.sreg1 = call_target->dreg;
2542                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2543                 } else {
2544                         vtable_reg = alloc_preg (cfg);
2545                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2546                         if (mono_class_is_interface (method->klass)) {
2547                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2548                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2549                                 slot_reg = vtable_reg;
2550                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2551                         } else {
2552                                 slot_reg = vtable_reg;
2553                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2554                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2555                                 if (imt_arg) {
2556                                         g_assert (mono_method_signature (method)->generic_param_count);
2557                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2558                                 }
2559                         }
2560
2561                         call->inst.sreg1 = slot_reg;
2562                         call->inst.inst_offset = offset;
2563                         call->is_virtual = TRUE;
2564                 }
2565         }
2566
2567         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2568
2569         if (rgctx_arg)
2570                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2571
2572         return (MonoInst*)call;
2573 }
2574
2575 MonoInst*
2576 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2577 {
2578         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2579 }
2580
2581 MonoInst*
2582 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2583                                            MonoInst **args)
2584 {
2585         MonoCallInst *call;
2586
2587         g_assert (sig);
2588
2589         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE, NULL);
2590         call->fptr = func;
2591
2592         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2593
2594         return (MonoInst*)call;
2595 }
2596
2597 MonoInst*
2598 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2599 {
2600         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2601
2602         g_assert (info);
2603
2604         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2605 }
2606
2607 /*
2608  * mono_emit_abs_call:
2609  *
2610  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2611  */
2612 inline static MonoInst*
2613 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2614                                         MonoMethodSignature *sig, MonoInst **args)
2615 {
2616         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2617         MonoInst *ins;
2618
2619         /*
2620          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2621          * handle it.
2622          */
2623         if (cfg->abs_patches == NULL)
2624                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2625         g_hash_table_insert (cfg->abs_patches, ji, ji);
2626         ins = mono_emit_native_call (cfg, ji, sig, args);
2627         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2628         return ins;
2629 }
2630
2631 static MonoMethodSignature*
2632 sig_to_rgctx_sig (MonoMethodSignature *sig)
2633 {
2634         // FIXME: memory allocation
2635         MonoMethodSignature *res;
2636         int i;
2637
2638         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2639         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2640         res->param_count = sig->param_count + 1;
2641         for (i = 0; i < sig->param_count; ++i)
2642                 res->params [i] = sig->params [i];
2643         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2644         return res;
2645 }
2646
2647 /* Make an indirect call to FSIG passing an additional argument */
2648 static MonoInst*
2649 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2650 {
2651         MonoMethodSignature *csig;
2652         MonoInst *args_buf [16];
2653         MonoInst **args;
2654         int i, pindex, tmp_reg;
2655
2656         /* Make a call with an rgctx/extra arg */
2657         if (fsig->param_count + 2 < 16)
2658                 args = args_buf;
2659         else
2660                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2661         pindex = 0;
2662         if (fsig->hasthis)
2663                 args [pindex ++] = orig_args [0];
2664         for (i = 0; i < fsig->param_count; ++i)
2665                 args [pindex ++] = orig_args [fsig->hasthis + i];
2666         tmp_reg = alloc_preg (cfg);
2667         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2668         csig = sig_to_rgctx_sig (fsig);
2669         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2670 }
2671
2672 /* Emit an indirect call to the function descriptor ADDR */
2673 static MonoInst*
2674 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2675 {
2676         int addr_reg, arg_reg;
2677         MonoInst *call_target;
2678
2679         g_assert (cfg->llvm_only);
2680
2681         /*
2682          * addr points to a <addr, arg> pair, load both of them, and
2683          * make a call to addr, passing arg as an extra arg.
2684          */
2685         addr_reg = alloc_preg (cfg);
2686         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2687         arg_reg = alloc_preg (cfg);
2688         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2689
2690         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2691 }
2692
2693 static gboolean
2694 direct_icalls_enabled (MonoCompile *cfg)
2695 {
2696         return FALSE;
2697
2698         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2699 #ifdef TARGET_AMD64
2700         if (cfg->compile_llvm && !cfg->llvm_only)
2701                 return FALSE;
2702 #endif
2703         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2704                 return FALSE;
2705         return TRUE;
2706 }
2707
2708 MonoInst*
2709 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2710 {
2711         /*
2712          * Call the jit icall without a wrapper if possible.
2713          * The wrapper is needed for the following reasons:
2714          * - to handle exceptions thrown using mono_raise_exceptions () from the
2715          *   icall function. The EH code needs the lmf frame pushed by the
2716          *   wrapper to be able to unwind back to managed code.
2717          * - to be able to do stack walks for asynchronously suspended
2718          *   threads when debugging.
2719          */
2720         if (info->no_raise && direct_icalls_enabled (cfg)) {
2721                 char *name;
2722                 int costs;
2723
2724                 if (!info->wrapper_method) {
2725                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2726                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2727                         g_free (name);
2728                         mono_memory_barrier ();
2729                 }
2730
2731                 /*
2732                  * Inline the wrapper method, which is basically a call to the C icall, and
2733                  * an exception check.
2734                  */
2735                 costs = inline_method (cfg, info->wrapper_method, NULL,
2736                                                            args, NULL, il_offset, TRUE);
2737                 g_assert (costs > 0);
2738                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2739
2740                 return args [0];
2741         } else {
2742                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2743         }
2744 }
2745
2746 static MonoInst*
2747 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2748 {
2749         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2750                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2751                         int widen_op = -1;
2752
2753                         /*
2754                          * Native code might return non register sized integers
2755                          * without initializing the upper bits.
2756                          */
2757                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2758                         case OP_LOADI1_MEMBASE:
2759                                 widen_op = OP_ICONV_TO_I1;
2760                                 break;
2761                         case OP_LOADU1_MEMBASE:
2762                                 widen_op = OP_ICONV_TO_U1;
2763                                 break;
2764                         case OP_LOADI2_MEMBASE:
2765                                 widen_op = OP_ICONV_TO_I2;
2766                                 break;
2767                         case OP_LOADU2_MEMBASE:
2768                                 widen_op = OP_ICONV_TO_U2;
2769                                 break;
2770                         default:
2771                                 break;
2772                         }
2773
2774                         if (widen_op != -1) {
2775                                 int dreg = alloc_preg (cfg);
2776                                 MonoInst *widen;
2777
2778                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2779                                 widen->type = ins->type;
2780                                 ins = widen;
2781                         }
2782                 }
2783         }
2784
2785         return ins;
2786 }
2787
2788
2789 static void
2790 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2791 {
2792         MonoInst *args [16];
2793
2794         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2795         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2796
2797         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2798 }
2799
2800 MonoMethod*
2801 mini_get_memcpy_method (void)
2802 {
2803         static MonoMethod *memcpy_method = NULL;
2804         if (!memcpy_method) {
2805                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2806                 if (!memcpy_method)
2807                         g_error ("Old corlib found. Install a new one");
2808         }
2809         return memcpy_method;
2810 }
2811
2812 void
2813 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2814 {
2815         int card_table_shift_bits;
2816         gpointer card_table_mask;
2817         guint8 *card_table;
2818         MonoInst *dummy_use;
2819         int nursery_shift_bits;
2820         size_t nursery_size;
2821
2822         if (!cfg->gen_write_barriers)
2823                 return;
2824
2825         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2826
2827         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2828
2829         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2830
2831         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2832                 MonoInst *wbarrier;
2833
2834                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2835                 wbarrier->sreg1 = ptr->dreg;
2836                 wbarrier->sreg2 = value->dreg;
2837                 MONO_ADD_INS (cfg->cbb, wbarrier);
2838         } else if (card_table) {
2839                 int offset_reg = alloc_preg (cfg);
2840                 int card_reg;
2841                 MonoInst *ins;
2842
2843                 /*
2844                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2845                  * collector case, so, for the serial collector, it might slightly slow down nursery
2846                  * collections. We also expect that the host system and the target system have the same card
2847                  * table configuration, which is the case if they have the same pointer size.
2848                  */
2849
2850                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2851                 if (card_table_mask)
2852                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2853
2854                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2855                  * IMM's larger than 32bits.
2856                  */
2857                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2858                 card_reg = ins->dreg;
2859
2860                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2861                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2862         } else {
2863                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2864                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2865         }
2866
2867         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2868 }
2869
2870 MonoMethod*
2871 mini_get_memset_method (void)
2872 {
2873         static MonoMethod *memset_method = NULL;
2874         if (!memset_method) {
2875                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2876                 if (!memset_method)
2877                         g_error ("Old corlib found. Install a new one");
2878         }
2879         return memset_method;
2880 }
2881
2882 void
2883 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2884 {
2885         MonoInst *iargs [3];
2886         int n;
2887         guint32 align;
2888         MonoMethod *memset_method;
2889         MonoInst *size_ins = NULL;
2890         MonoInst *bzero_ins = NULL;
2891         static MonoMethod *bzero_method;
2892
2893         /* FIXME: Optimize this for the case when dest is an LDADDR */
2894         mono_class_init (klass);
2895         if (mini_is_gsharedvt_klass (klass)) {
2896                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2897                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2898                 if (!bzero_method)
2899                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2900                 g_assert (bzero_method);
2901                 iargs [0] = dest;
2902                 iargs [1] = size_ins;
2903                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2904                 return;
2905         }
2906
2907         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2908
2909         n = mono_class_value_size (klass, &align);
2910
2911         if (n <= sizeof (gpointer) * 8) {
2912                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2913         }
2914         else {
2915                 memset_method = mini_get_memset_method ();
2916                 iargs [0] = dest;
2917                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2918                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2919                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2920         }
2921 }
2922
2923 /*
2924  * emit_get_rgctx:
2925  *
2926  *   Emit IR to return either the this pointer for instance method,
2927  * or the mrgctx for static methods.
2928  */
2929 static MonoInst*
2930 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2931 {
2932         MonoInst *this_ins = NULL;
2933
2934         g_assert (cfg->gshared);
2935
2936         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2937                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2938                 !method->klass->valuetype)
2939                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2940
2941         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2942                 MonoInst *mrgctx_loc, *mrgctx_var;
2943
2944                 g_assert (!this_ins);
2945                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2946
2947                 mrgctx_loc = mono_get_vtable_var (cfg);
2948                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2949
2950                 return mrgctx_var;
2951         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2952                 MonoInst *mrgctx_loc, *mrgctx_var;
2953
2954                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2955                 mrgctx_loc = mono_get_vtable_var (cfg);
2956                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2957
2958                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2959
2960                 return mrgctx_var;
2961         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2962                 MonoInst *vtable_loc, *vtable_var;
2963
2964                 g_assert (!this_ins);
2965
2966                 vtable_loc = mono_get_vtable_var (cfg);
2967                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2968
2969                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2970                         MonoInst *mrgctx_var = vtable_var;
2971                         int vtable_reg;
2972
2973                         vtable_reg = alloc_preg (cfg);
2974                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2975                         vtable_var->type = STACK_PTR;
2976                 }
2977
2978                 return vtable_var;
2979         } else {
2980                 MonoInst *ins;
2981                 int vtable_reg;
2982
2983                 vtable_reg = alloc_preg (cfg);
2984                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2985                 return ins;
2986         }
2987 }
2988
2989 static MonoJumpInfoRgctxEntry *
2990 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
2991 {
2992         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
2993         res->method = method;
2994         res->in_mrgctx = in_mrgctx;
2995         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
2996         res->data->type = patch_type;
2997         res->data->data.target = patch_data;
2998         res->info_type = info_type;
2999
3000         return res;
3001 }
3002
3003 static inline MonoInst*
3004 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3005 {
3006         MonoInst *args [16];
3007         MonoInst *call;
3008
3009         // FIXME: No fastpath since the slot is not a compile time constant
3010         args [0] = rgctx;
3011         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3012         if (entry->in_mrgctx)
3013                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3014         else
3015                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3016         return call;
3017 #if 0
3018         /*
3019          * FIXME: This can be called during decompose, which is a problem since it creates
3020          * new bblocks.
3021          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3022          */
3023         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3024         gboolean mrgctx;
3025         MonoBasicBlock *is_null_bb, *end_bb;
3026         MonoInst *res, *ins, *call;
3027         MonoInst *args[16];
3028
3029         slot = mini_get_rgctx_entry_slot (entry);
3030
3031         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3032         index = MONO_RGCTX_SLOT_INDEX (slot);
3033         if (mrgctx)
3034                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3035         for (depth = 0; ; ++depth) {
3036                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3037
3038                 if (index < size - 1)
3039                         break;
3040                 index -= size - 1;
3041         }
3042
3043         NEW_BBLOCK (cfg, end_bb);
3044         NEW_BBLOCK (cfg, is_null_bb);
3045
3046         if (mrgctx) {
3047                 rgctx_reg = rgctx->dreg;
3048         } else {
3049                 rgctx_reg = alloc_preg (cfg);
3050
3051                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3052                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3053                 NEW_BBLOCK (cfg, is_null_bb);
3054
3055                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3056                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3057         }
3058
3059         for (i = 0; i < depth; ++i) {
3060                 int array_reg = alloc_preg (cfg);
3061
3062                 /* load ptr to next array */
3063                 if (mrgctx && i == 0)
3064                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3065                 else
3066                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3067                 rgctx_reg = array_reg;
3068                 /* is the ptr null? */
3069                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3070                 /* if yes, jump to actual trampoline */
3071                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3072         }
3073
3074         /* fetch slot */
3075         val_reg = alloc_preg (cfg);
3076         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3077         /* is the slot null? */
3078         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3079         /* if yes, jump to actual trampoline */
3080         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3081
3082         /* Fastpath */
3083         res_reg = alloc_preg (cfg);
3084         MONO_INST_NEW (cfg, ins, OP_MOVE);
3085         ins->dreg = res_reg;
3086         ins->sreg1 = val_reg;
3087         MONO_ADD_INS (cfg->cbb, ins);
3088         res = ins;
3089         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3090
3091         /* Slowpath */
3092         MONO_START_BB (cfg, is_null_bb);
3093         args [0] = rgctx;
3094         EMIT_NEW_ICONST (cfg, args [1], index);
3095         if (mrgctx)
3096                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3097         else
3098                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3099         MONO_INST_NEW (cfg, ins, OP_MOVE);
3100         ins->dreg = res_reg;
3101         ins->sreg1 = call->dreg;
3102         MONO_ADD_INS (cfg->cbb, ins);
3103         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3104
3105         MONO_START_BB (cfg, end_bb);
3106
3107         return res;
3108 #endif
3109 }
3110
3111 /*
3112  * emit_rgctx_fetch:
3113  *
3114  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3115  * given by RGCTX.
3116  */
3117 static inline MonoInst*
3118 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3119 {
3120         if (cfg->llvm_only)
3121                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3122         else
3123                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3124 }
3125
3126 MonoInst*
3127 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3128                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3129 {
3130         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);
3131         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3132
3133         return emit_rgctx_fetch (cfg, rgctx, entry);
3134 }
3135
3136 static MonoInst*
3137 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3138                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3139 {
3140         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);
3141         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3142
3143         return emit_rgctx_fetch (cfg, rgctx, entry);
3144 }
3145
3146 static MonoInst*
3147 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3148                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3149 {
3150         MonoJumpInfoGSharedVtCall *call_info;
3151         MonoJumpInfoRgctxEntry *entry;
3152         MonoInst *rgctx;
3153
3154         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3155         call_info->sig = sig;
3156         call_info->method = cmethod;
3157
3158         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);
3159         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3160
3161         return emit_rgctx_fetch (cfg, rgctx, entry);
3162 }
3163
3164 /*
3165  * emit_get_rgctx_virt_method:
3166  *
3167  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3168  */
3169 static MonoInst*
3170 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3171                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3172 {
3173         MonoJumpInfoVirtMethod *info;
3174         MonoJumpInfoRgctxEntry *entry;
3175         MonoInst *rgctx;
3176
3177         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3178         info->klass = klass;
3179         info->method = virt_method;
3180
3181         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);
3182         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3183
3184         return emit_rgctx_fetch (cfg, rgctx, entry);
3185 }
3186
3187 static MonoInst*
3188 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3189                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3190 {
3191         MonoJumpInfoRgctxEntry *entry;
3192         MonoInst *rgctx;
3193
3194         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);
3195         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3196
3197         return emit_rgctx_fetch (cfg, rgctx, entry);
3198 }
3199
3200 /*
3201  * emit_get_rgctx_method:
3202  *
3203  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3204  * normal constants, else emit a load from the rgctx.
3205  */
3206 static MonoInst*
3207 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3208                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3209 {
3210         if (!context_used) {
3211                 MonoInst *ins;
3212
3213                 switch (rgctx_type) {
3214                 case MONO_RGCTX_INFO_METHOD:
3215                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3216                         return ins;
3217                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3218                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3219                         return ins;
3220                 default:
3221                         g_assert_not_reached ();
3222                 }
3223         } else {
3224                 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);
3225                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3226
3227                 return emit_rgctx_fetch (cfg, rgctx, entry);
3228         }
3229 }
3230
3231 static MonoInst*
3232 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3233                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3234 {
3235         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);
3236         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3237
3238         return emit_rgctx_fetch (cfg, rgctx, entry);
3239 }
3240
3241 static int
3242 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3243 {
3244         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3245         MonoRuntimeGenericContextInfoTemplate *template_;
3246         int i, idx;
3247
3248         g_assert (info);
3249
3250         for (i = 0; i < info->num_entries; ++i) {
3251                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3252
3253                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3254                         return i;
3255         }
3256
3257         if (info->num_entries == info->count_entries) {
3258                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3259                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3260
3261                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3262
3263                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3264                 info->entries = new_entries;
3265                 info->count_entries = new_count_entries;
3266         }
3267
3268         idx = info->num_entries;
3269         template_ = &info->entries [idx];
3270         template_->info_type = rgctx_type;
3271         template_->data = data;
3272
3273         info->num_entries ++;
3274
3275         return idx;
3276 }
3277
3278 /*
3279  * emit_get_gsharedvt_info:
3280  *
3281  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3282  */
3283 static MonoInst*
3284 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3285 {
3286         MonoInst *ins;
3287         int idx, dreg;
3288
3289         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3290         /* Load info->entries [idx] */
3291         dreg = alloc_preg (cfg);
3292         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3293
3294         return ins;
3295 }
3296
3297 MonoInst*
3298 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3299 {
3300         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3301 }
3302
3303 /*
3304  * On return the caller must check @klass for load errors.
3305  */
3306 static void
3307 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3308 {
3309         MonoInst *vtable_arg;
3310         int context_used;
3311
3312         context_used = mini_class_check_context_used (cfg, klass);
3313
3314         if (context_used) {
3315                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3316                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3317         } else {
3318                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3319
3320                 if (!vtable)
3321                         return;
3322                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3323         }
3324
3325         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3326                 MonoInst *ins;
3327
3328                 /*
3329                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3330                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3331                  */
3332                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3333                 ins->sreg1 = vtable_arg->dreg;
3334                 MONO_ADD_INS (cfg->cbb, ins);
3335         } else {
3336                 int inited_reg;
3337                 MonoBasicBlock *inited_bb;
3338                 MonoInst *args [16];
3339
3340                 inited_reg = alloc_ireg (cfg);
3341
3342                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3343
3344                 NEW_BBLOCK (cfg, inited_bb);
3345
3346                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3347                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3348
3349                 args [0] = vtable_arg;
3350                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3351
3352                 MONO_START_BB (cfg, inited_bb);
3353         }
3354 }
3355
3356 static void
3357 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3358 {
3359         MonoInst *ins;
3360
3361         if (cfg->gen_seq_points && cfg->method == method) {
3362                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3363                 if (nonempty_stack)
3364                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3365                 MONO_ADD_INS (cfg->cbb, ins);
3366         }
3367 }
3368
3369 void
3370 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3371 {
3372         if (mini_get_debug_options ()->better_cast_details) {
3373                 int vtable_reg = alloc_preg (cfg);
3374                 int klass_reg = alloc_preg (cfg);
3375                 MonoBasicBlock *is_null_bb = NULL;
3376                 MonoInst *tls_get;
3377                 int to_klass_reg, context_used;
3378
3379                 if (null_check) {
3380                         NEW_BBLOCK (cfg, is_null_bb);
3381
3382                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3383                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3384                 }
3385
3386                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3387                 if (!tls_get) {
3388                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3389                         exit (1);
3390                 }
3391
3392                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3393                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3394
3395                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3396
3397                 context_used = mini_class_check_context_used (cfg, klass);
3398                 if (context_used) {
3399                         MonoInst *class_ins;
3400
3401                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3402                         to_klass_reg = class_ins->dreg;
3403                 } else {
3404                         to_klass_reg = alloc_preg (cfg);
3405                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3406                 }
3407                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3408
3409                 if (null_check)
3410                         MONO_START_BB (cfg, is_null_bb);
3411         }
3412 }
3413
3414 void
3415 mini_reset_cast_details (MonoCompile *cfg)
3416 {
3417         /* Reset the variables holding the cast details */
3418         if (mini_get_debug_options ()->better_cast_details) {
3419                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3420                 /* It is enough to reset the from field */
3421                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3422         }
3423 }
3424
3425 /*
3426  * On return the caller must check @array_class for load errors
3427  */
3428 static void
3429 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3430 {
3431         int vtable_reg = alloc_preg (cfg);
3432         int context_used;
3433
3434         context_used = mini_class_check_context_used (cfg, array_class);
3435
3436         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3437
3438         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3439
3440         if (cfg->opt & MONO_OPT_SHARED) {
3441                 int class_reg = alloc_preg (cfg);
3442                 MonoInst *ins;
3443
3444                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3445                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3446                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3447         } else if (context_used) {
3448                 MonoInst *vtable_ins;
3449
3450                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3451                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3452         } else {
3453                 if (cfg->compile_aot) {
3454                         int vt_reg;
3455                         MonoVTable *vtable;
3456
3457                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3458                                 return;
3459                         vt_reg = alloc_preg (cfg);
3460                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3461                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3462                 } else {
3463                         MonoVTable *vtable;
3464                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3465                                 return;
3466                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3467                 }
3468         }
3469
3470         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3471
3472         mini_reset_cast_details (cfg);
3473 }
3474
3475 /**
3476  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3477  * generic code is generated.
3478  */
3479 static MonoInst*
3480 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3481 {
3482         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3483
3484         if (context_used) {
3485                 MonoInst *rgctx, *addr;
3486
3487                 /* FIXME: What if the class is shared?  We might not
3488                    have to get the address of the method from the
3489                    RGCTX. */
3490                 addr = emit_get_rgctx_method (cfg, context_used, method,
3491                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3492                 if (cfg->llvm_only) {
3493                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3494                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3495                 } else {
3496                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3497
3498                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3499                 }
3500         } else {
3501                 gboolean pass_vtable, pass_mrgctx;
3502                 MonoInst *rgctx_arg = NULL;
3503
3504                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3505                 g_assert (!pass_mrgctx);
3506
3507                 if (pass_vtable) {
3508                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3509
3510                         g_assert (vtable);
3511                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3512                 }
3513
3514                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3515         }
3516 }
3517
3518 static MonoInst*
3519 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3520 {
3521         MonoInst *add;
3522         int obj_reg;
3523         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3524         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3525         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3526         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3527
3528         obj_reg = sp [0]->dreg;
3529         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3530         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3531
3532         /* FIXME: generics */
3533         g_assert (klass->rank == 0);
3534
3535         // Check rank == 0
3536         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3537         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3538
3539         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3540         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3541
3542         if (context_used) {
3543                 MonoInst *element_class;
3544
3545                 /* This assertion is from the unboxcast insn */
3546                 g_assert (klass->rank == 0);
3547
3548                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3549                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3550
3551                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3552                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3553         } else {
3554                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3555                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3556                 mini_reset_cast_details (cfg);
3557         }
3558
3559         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3560         MONO_ADD_INS (cfg->cbb, add);
3561         add->type = STACK_MP;
3562         add->klass = klass;
3563
3564         return add;
3565 }
3566
3567 static MonoInst*
3568 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3569 {
3570         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3571         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3572         MonoInst *ins;
3573         int dreg, addr_reg;
3574
3575         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3576
3577         /* obj */
3578         args [0] = obj;
3579
3580         /* klass */
3581         args [1] = klass_inst;
3582
3583         /* CASTCLASS */
3584         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3585
3586         NEW_BBLOCK (cfg, is_ref_bb);
3587         NEW_BBLOCK (cfg, is_nullable_bb);
3588         NEW_BBLOCK (cfg, end_bb);
3589         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3590         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3591         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3592
3593         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3594         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3595
3596         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3597         addr_reg = alloc_dreg (cfg, STACK_MP);
3598
3599         /* Non-ref case */
3600         /* UNBOX */
3601         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3602         MONO_ADD_INS (cfg->cbb, addr);
3603
3604         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3605
3606         /* Ref case */
3607         MONO_START_BB (cfg, is_ref_bb);
3608
3609         /* Save the ref to a temporary */
3610         dreg = alloc_ireg (cfg);
3611         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3612         addr->dreg = addr_reg;
3613         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3614         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3615
3616         /* Nullable case */
3617         MONO_START_BB (cfg, is_nullable_bb);
3618
3619         {
3620                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3621                 MonoInst *unbox_call;
3622                 MonoMethodSignature *unbox_sig;
3623
3624                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3625                 unbox_sig->ret = &klass->byval_arg;
3626                 unbox_sig->param_count = 1;
3627                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3628
3629                 if (cfg->llvm_only)
3630                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3631                 else
3632                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3633
3634                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3635                 addr->dreg = addr_reg;
3636         }
3637
3638         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3639
3640         /* End */
3641         MONO_START_BB (cfg, end_bb);
3642
3643         /* LDOBJ */
3644         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3645
3646         return ins;
3647 }
3648
3649 /*
3650  * Returns NULL and set the cfg exception on error.
3651  */
3652 static MonoInst*
3653 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3654 {
3655         MonoInst *iargs [2];
3656         void *alloc_ftn;
3657
3658         if (context_used) {
3659                 MonoInst *data;
3660                 MonoRgctxInfoType rgctx_info;
3661                 MonoInst *iargs [2];
3662                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3663
3664                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3665
3666                 if (cfg->opt & MONO_OPT_SHARED)
3667                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3668                 else
3669                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3670                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3671
3672                 if (cfg->opt & MONO_OPT_SHARED) {
3673                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3674                         iargs [1] = data;
3675                         alloc_ftn = ves_icall_object_new;
3676                 } else {
3677                         iargs [0] = data;
3678                         alloc_ftn = ves_icall_object_new_specific;
3679                 }
3680
3681                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3682                         if (known_instance_size) {
3683                                 int size = mono_class_instance_size (klass);
3684                                 if (size < sizeof (MonoObject))
3685                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3686
3687                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3688                         }
3689                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3690                 }
3691
3692                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3693         }
3694
3695         if (cfg->opt & MONO_OPT_SHARED) {
3696                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3697                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3698
3699                 alloc_ftn = ves_icall_object_new;
3700         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3701                 /* This happens often in argument checking code, eg. throw new FooException... */
3702                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3703                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3704                 alloc_ftn = mono_helper_newobj_mscorlib;
3705         } else {
3706                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3707                 MonoMethod *managed_alloc = NULL;
3708
3709                 if (!vtable) {
3710                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3711                         cfg->exception_ptr = klass;
3712                         return NULL;
3713                 }
3714
3715                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3716
3717                 if (managed_alloc) {
3718                         int size = mono_class_instance_size (klass);
3719                         if (size < sizeof (MonoObject))
3720                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3721
3722                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3723                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3724                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3725                 }
3726                 alloc_ftn = ves_icall_object_new_specific;
3727                 EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3728         }
3729
3730         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3731 }
3732
3733 /*
3734  * Returns NULL and set the cfg exception on error.
3735  */
3736 static MonoInst*
3737 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3738 {
3739         MonoInst *alloc, *ins;
3740
3741         if (mono_class_is_nullable (klass)) {
3742                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3743
3744                 if (context_used) {
3745                         if (cfg->llvm_only && cfg->gsharedvt) {
3746                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3747                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3748                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3749                         } else {
3750                                 /* FIXME: What if the class is shared?  We might not
3751                                    have to get the method address from the RGCTX. */
3752                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3753                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3754                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3755
3756                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3757                         }
3758                 } else {
3759                         gboolean pass_vtable, pass_mrgctx;
3760                         MonoInst *rgctx_arg = NULL;
3761
3762                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3763                         g_assert (!pass_mrgctx);
3764
3765                         if (pass_vtable) {
3766                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3767
3768                                 g_assert (vtable);
3769                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3770                         }
3771
3772                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3773                 }
3774         }
3775
3776         if (mini_is_gsharedvt_klass (klass)) {
3777                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3778                 MonoInst *res, *is_ref, *src_var, *addr;
3779                 int dreg;
3780
3781                 dreg = alloc_ireg (cfg);
3782
3783                 NEW_BBLOCK (cfg, is_ref_bb);
3784                 NEW_BBLOCK (cfg, is_nullable_bb);
3785                 NEW_BBLOCK (cfg, end_bb);
3786                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3787                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3788                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3789
3790                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3791                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3792
3793                 /* Non-ref case */
3794                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3795                 if (!alloc)
3796                         return NULL;
3797                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3798                 ins->opcode = OP_STOREV_MEMBASE;
3799
3800                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3801                 res->type = STACK_OBJ;
3802                 res->klass = klass;
3803                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3804
3805                 /* Ref case */
3806                 MONO_START_BB (cfg, is_ref_bb);
3807
3808                 /* val is a vtype, so has to load the value manually */
3809                 src_var = get_vreg_to_inst (cfg, val->dreg);
3810                 if (!src_var)
3811                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3812                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3813                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3814                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3815
3816                 /* Nullable case */
3817                 MONO_START_BB (cfg, is_nullable_bb);
3818
3819                 {
3820                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3821                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3822                         MonoInst *box_call;
3823                         MonoMethodSignature *box_sig;
3824
3825                         /*
3826                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3827                          * construct that method at JIT time, so have to do things by hand.
3828                          */
3829                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3830                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3831                         box_sig->param_count = 1;
3832                         box_sig->params [0] = &klass->byval_arg;
3833
3834                         if (cfg->llvm_only)
3835                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3836                         else
3837                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3838                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3839                         res->type = STACK_OBJ;
3840                         res->klass = klass;
3841                 }
3842
3843                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3844
3845                 MONO_START_BB (cfg, end_bb);
3846
3847                 return res;
3848         } else {
3849                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3850                 if (!alloc)
3851                         return NULL;
3852
3853                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3854                 return alloc;
3855         }
3856 }
3857
3858 static GHashTable* direct_icall_type_hash;
3859
3860 static gboolean
3861 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3862 {
3863         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3864         if (!direct_icalls_enabled (cfg))
3865                 return FALSE;
3866
3867         /*
3868          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3869          * Whitelist a few icalls for now.
3870          */
3871         if (!direct_icall_type_hash) {
3872                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3873
3874                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3875                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3876                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3877                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3878                 mono_memory_barrier ();
3879                 direct_icall_type_hash = h;
3880         }
3881
3882         if (cmethod->klass == mono_defaults.math_class)
3883                 return TRUE;
3884         /* No locking needed */
3885         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3886                 return TRUE;
3887         return FALSE;
3888 }
3889
3890 static gboolean
3891 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3892 {
3893         if (cmethod->klass == mono_defaults.systemtype_class) {
3894                 if (!strcmp (cmethod->name, "GetType"))
3895                         return TRUE;
3896         }
3897         return FALSE;
3898 }
3899
3900 static G_GNUC_UNUSED MonoInst*
3901 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3902 {
3903         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3904         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3905         gboolean is_i4;
3906
3907         switch (enum_type->type) {
3908         case MONO_TYPE_I8:
3909         case MONO_TYPE_U8:
3910 #if SIZEOF_REGISTER == 8
3911         case MONO_TYPE_I:
3912         case MONO_TYPE_U:
3913 #endif
3914                 is_i4 = FALSE;
3915                 break;
3916         default:
3917                 is_i4 = TRUE;
3918                 break;
3919         }
3920
3921         {
3922                 MonoInst *load, *and_, *cmp, *ceq;
3923                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3924                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3925                 int dest_reg = alloc_ireg (cfg);
3926
3927                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3928                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3929                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3930                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3931
3932                 ceq->type = STACK_I4;
3933
3934                 if (!is_i4) {
3935                         load = mono_decompose_opcode (cfg, load);
3936                         and_ = mono_decompose_opcode (cfg, and_);
3937                         cmp = mono_decompose_opcode (cfg, cmp);
3938                         ceq = mono_decompose_opcode (cfg, ceq);
3939                 }
3940
3941                 return ceq;
3942         }
3943 }
3944
3945 /*
3946  * Returns NULL and set the cfg exception on error.
3947  */
3948 static G_GNUC_UNUSED MonoInst*
3949 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3950 {
3951         MonoInst *ptr;
3952         int dreg;
3953         gpointer trampoline;
3954         MonoInst *obj, *method_ins, *tramp_ins;
3955         MonoDomain *domain;
3956         guint8 **code_slot;
3957
3958         if (virtual_ && !cfg->llvm_only) {
3959                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3960                 g_assert (invoke);
3961
3962                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3963                         return NULL;
3964         }
3965
3966         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3967         if (!obj)
3968                 return NULL;
3969
3970         /* Inline the contents of mono_delegate_ctor */
3971
3972         /* Set target field */
3973         /* Optimize away setting of NULL target */
3974         if (!MONO_INS_IS_PCONST_NULL (target)) {
3975                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3976                 if (cfg->gen_write_barriers) {
3977                         dreg = alloc_preg (cfg);
3978                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
3979                         mini_emit_write_barrier (cfg, ptr, target);
3980                 }
3981         }
3982
3983         /* Set method field */
3984         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
3985         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3986
3987         /*
3988          * To avoid looking up the compiled code belonging to the target method
3989          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3990          * store it, and we fill it after the method has been compiled.
3991          */
3992         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
3993                 MonoInst *code_slot_ins;
3994
3995                 if (context_used) {
3996                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
3997                 } else {
3998                         domain = mono_domain_get ();
3999                         mono_domain_lock (domain);
4000                         if (!domain_jit_info (domain)->method_code_hash)
4001                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4002                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4003                         if (!code_slot) {
4004                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4005                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4006                         }
4007                         mono_domain_unlock (domain);
4008
4009                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4010                 }
4011                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4012         }
4013
4014         if (cfg->llvm_only) {
4015                 MonoInst *args [16];
4016
4017                 if (virtual_) {
4018                         args [0] = obj;
4019                         args [1] = target;
4020                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4021                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4022                 } else {
4023                         args [0] = obj;
4024                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4025                 }
4026
4027                 return obj;
4028         }
4029
4030         if (cfg->compile_aot) {
4031                 MonoDelegateClassMethodPair *del_tramp;
4032
4033                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4034                 del_tramp->klass = klass;
4035                 del_tramp->method = context_used ? NULL : method;
4036                 del_tramp->is_virtual = virtual_;
4037                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4038         } else {
4039                 if (virtual_)
4040                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4041                 else
4042                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4043                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4044         }
4045
4046         /* Set invoke_impl field */
4047         if (virtual_) {
4048                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4049         } else {
4050                 dreg = alloc_preg (cfg);
4051                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4052                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4053
4054                 dreg = alloc_preg (cfg);
4055                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4056                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4057         }
4058
4059         dreg = alloc_preg (cfg);
4060         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4061         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4062
4063         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4064
4065         return obj;
4066 }
4067
4068 static MonoInst*
4069 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4070 {
4071         MonoJitICallInfo *info;
4072
4073         /* Need to register the icall so it gets an icall wrapper */
4074         info = mono_get_array_new_va_icall (rank);
4075
4076         cfg->flags |= MONO_CFG_HAS_VARARGS;
4077
4078         /* mono_array_new_va () needs a vararg calling convention */
4079         cfg->exception_message = g_strdup ("array-new");
4080         cfg->disable_llvm = TRUE;
4081
4082         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4083         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4084 }
4085
4086 /*
4087  * handle_constrained_gsharedvt_call:
4088  *
4089  *   Handle constrained calls where the receiver is a gsharedvt type.
4090  * Return the instruction representing the call. Set the cfg exception on failure.
4091  */
4092 static MonoInst*
4093 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4094                                                                    gboolean *ref_emit_widen)
4095 {
4096         MonoInst *ins = NULL;
4097         gboolean emit_widen = *ref_emit_widen;
4098
4099         /*
4100          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4101          * 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
4102          * pack the arguments into an array, and do the rest of the work in in an icall.
4103          */
4104         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4105                 (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)) &&
4106                 (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]))))) {
4107                 MonoInst *args [16];
4108
4109                 /*
4110                  * This case handles calls to
4111                  * - object:ToString()/Equals()/GetHashCode(),
4112                  * - System.IComparable<T>:CompareTo()
4113                  * - System.IEquatable<T>:Equals ()
4114                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4115                  */
4116
4117                 args [0] = sp [0];
4118                 if (mono_method_check_context_used (cmethod))
4119                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4120                 else
4121                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4122                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4123
4124                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4125                 if (fsig->hasthis && fsig->param_count) {
4126                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4127                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4128                         ins->dreg = alloc_preg (cfg);
4129                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4130                         MONO_ADD_INS (cfg->cbb, ins);
4131                         args [4] = ins;
4132
4133                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4134                                 int addr_reg, deref_arg_reg;
4135
4136                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4137                                 deref_arg_reg = alloc_preg (cfg);
4138                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4139                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4140
4141                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4142                                 addr_reg = ins->dreg;
4143                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4144                         } else {
4145                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4146                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4147                         }
4148                 } else {
4149                         EMIT_NEW_ICONST (cfg, args [3], 0);
4150                         EMIT_NEW_ICONST (cfg, args [4], 0);
4151                 }
4152                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4153                 emit_widen = FALSE;
4154
4155                 if (mini_is_gsharedvt_type (fsig->ret)) {
4156                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4157                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4158                         MonoInst *add;
4159
4160                         /* Unbox */
4161                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4162                         MONO_ADD_INS (cfg->cbb, add);
4163                         /* Load value */
4164                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4165                         MONO_ADD_INS (cfg->cbb, ins);
4166                         /* ins represents the call result */
4167                 }
4168         } else {
4169                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4170         }
4171
4172         *ref_emit_widen = emit_widen;
4173
4174         return ins;
4175
4176  exception_exit:
4177         return NULL;
4178 }
4179
4180 static void
4181 mono_emit_load_got_addr (MonoCompile *cfg)
4182 {
4183         MonoInst *getaddr, *dummy_use;
4184
4185         if (!cfg->got_var || cfg->got_var_allocated)
4186                 return;
4187
4188         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4189         getaddr->cil_code = cfg->header->code;
4190         getaddr->dreg = cfg->got_var->dreg;
4191
4192         /* Add it to the start of the first bblock */
4193         if (cfg->bb_entry->code) {
4194                 getaddr->next = cfg->bb_entry->code;
4195                 cfg->bb_entry->code = getaddr;
4196         }
4197         else
4198                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4199
4200         cfg->got_var_allocated = TRUE;
4201
4202         /*
4203          * Add a dummy use to keep the got_var alive, since real uses might
4204          * only be generated by the back ends.
4205          * Add it to end_bblock, so the variable's lifetime covers the whole
4206          * method.
4207          * It would be better to make the usage of the got var explicit in all
4208          * cases when the backend needs it (i.e. calls, throw etc.), so this
4209          * wouldn't be needed.
4210          */
4211         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4212         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4213 }
4214
4215 static int inline_limit;
4216 static gboolean inline_limit_inited;
4217
4218 static gboolean
4219 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4220 {
4221         MonoMethodHeaderSummary header;
4222         MonoVTable *vtable;
4223 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4224         MonoMethodSignature *sig = mono_method_signature (method);
4225         int i;
4226 #endif
4227
4228         if (cfg->disable_inline)
4229                 return FALSE;
4230         if (cfg->gsharedvt)
4231                 return FALSE;
4232
4233         if (cfg->inline_depth > 10)
4234                 return FALSE;
4235
4236         if (!mono_method_get_header_summary (method, &header))
4237                 return FALSE;
4238
4239         /*runtime, icall and pinvoke are checked by summary call*/
4240         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4241             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4242             (mono_class_is_marshalbyref (method->klass)) ||
4243             header.has_clauses)
4244                 return FALSE;
4245
4246         /* also consider num_locals? */
4247         /* Do the size check early to avoid creating vtables */
4248         if (!inline_limit_inited) {
4249                 char *inlinelimit;
4250                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4251                         inline_limit = atoi (inlinelimit);
4252                         g_free (inlinelimit);
4253                 } else
4254                         inline_limit = INLINE_LENGTH_LIMIT;
4255                 inline_limit_inited = TRUE;
4256         }
4257         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4258                 return FALSE;
4259
4260         /*
4261          * if we can initialize the class of the method right away, we do,
4262          * otherwise we don't allow inlining if the class needs initialization,
4263          * since it would mean inserting a call to mono_runtime_class_init()
4264          * inside the inlined code
4265          */
4266         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4267                 return FALSE;
4268
4269         if (!(cfg->opt & MONO_OPT_SHARED)) {
4270                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4271                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4272                         if (method->klass->has_cctor) {
4273                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4274                                 if (!vtable)
4275                                         return FALSE;
4276                                 if (!cfg->compile_aot) {
4277                                         MonoError error;
4278                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4279                                                 mono_error_cleanup (&error);
4280                                                 return FALSE;
4281                                         }
4282                                 }
4283                         }
4284                 } else if (mono_class_is_before_field_init (method->klass)) {
4285                         if (cfg->run_cctors && method->klass->has_cctor) {
4286                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4287                                 if (!method->klass->runtime_info)
4288                                         /* No vtable created yet */
4289                                         return FALSE;
4290                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4291                                 if (!vtable)
4292                                         return FALSE;
4293                                 /* This makes so that inline cannot trigger */
4294                                 /* .cctors: too many apps depend on them */
4295                                 /* running with a specific order... */
4296                                 if (! vtable->initialized)
4297                                         return FALSE;
4298                                 MonoError error;
4299                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4300                                         mono_error_cleanup (&error);
4301                                         return FALSE;
4302                                 }
4303                         }
4304                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4305                         if (!method->klass->runtime_info)
4306                                 /* No vtable created yet */
4307                                 return FALSE;
4308                         vtable = mono_class_vtable (cfg->domain, method->klass);
4309                         if (!vtable)
4310                                 return FALSE;
4311                         if (!vtable->initialized)
4312                                 return FALSE;
4313                 }
4314         } else {
4315                 /*
4316                  * If we're compiling for shared code
4317                  * the cctor will need to be run at aot method load time, for example,
4318                  * or at the end of the compilation of the inlining method.
4319                  */
4320                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4321                         return FALSE;
4322         }
4323
4324 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4325         if (mono_arch_is_soft_float ()) {
4326                 /* FIXME: */
4327                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4328                         return FALSE;
4329                 for (i = 0; i < sig->param_count; ++i)
4330                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4331                                 return FALSE;
4332         }
4333 #endif
4334
4335         if (g_list_find (cfg->dont_inline, method))
4336                 return FALSE;
4337
4338         if (mono_profiler_get_call_instrumentation_flags (method))
4339                 return FALSE;
4340
4341         return TRUE;
4342 }
4343
4344 static gboolean
4345 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4346 {
4347         if (!cfg->compile_aot) {
4348                 g_assert (vtable);
4349                 if (vtable->initialized)
4350                         return FALSE;
4351         }
4352
4353         if (mono_class_is_before_field_init (klass)) {
4354                 if (cfg->method == method)
4355                         return FALSE;
4356         }
4357
4358         if (!mono_class_needs_cctor_run (klass, method))
4359                 return FALSE;
4360
4361         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4362                 /* The initialization is already done before the method is called */
4363                 return FALSE;
4364
4365         return TRUE;
4366 }
4367
4368 MonoInst*
4369 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4370 {
4371         MonoInst *ins;
4372         guint32 size;
4373         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4374         int context_used;
4375
4376         if (mini_is_gsharedvt_variable_klass (klass)) {
4377                 size = -1;
4378         } else {
4379                 mono_class_init (klass);
4380                 size = mono_class_array_element_size (klass);
4381         }
4382
4383         mult_reg = alloc_preg (cfg);
4384         array_reg = arr->dreg;
4385         index_reg = index->dreg;
4386
4387 #if SIZEOF_REGISTER == 8
4388         /* The array reg is 64 bits but the index reg is only 32 */
4389         if (COMPILE_LLVM (cfg)) {
4390                 /*
4391                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4392                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4393                  * of OP_X86_LEA for llvm.
4394                  */
4395                 index2_reg = index_reg;
4396         } else {
4397                 index2_reg = alloc_preg (cfg);
4398                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4399         }
4400 #else
4401         if (index->type == STACK_I8) {
4402                 index2_reg = alloc_preg (cfg);
4403                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4404         } else {
4405                 index2_reg = index_reg;
4406         }
4407 #endif
4408
4409         if (bcheck)
4410                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4411
4412 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4413         if (size == 1 || size == 2 || size == 4 || size == 8) {
4414                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4415
4416                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4417                 ins->klass = mono_class_get_element_class (klass);
4418                 ins->type = STACK_MP;
4419
4420                 return ins;
4421         }
4422 #endif
4423
4424         add_reg = alloc_ireg_mp (cfg);
4425
4426         if (size == -1) {
4427                 MonoInst *rgctx_ins;
4428
4429                 /* gsharedvt */
4430                 g_assert (cfg->gshared);
4431                 context_used = mini_class_check_context_used (cfg, klass);
4432                 g_assert (context_used);
4433                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4434                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4435         } else {
4436                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4437         }
4438         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4439         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4440         ins->klass = mono_class_get_element_class (klass);
4441         ins->type = STACK_MP;
4442         MONO_ADD_INS (cfg->cbb, ins);
4443
4444         return ins;
4445 }
4446
4447 static MonoInst*
4448 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4449 {
4450         int bounds_reg = alloc_preg (cfg);
4451         int add_reg = alloc_ireg_mp (cfg);
4452         int mult_reg = alloc_preg (cfg);
4453         int mult2_reg = alloc_preg (cfg);
4454         int low1_reg = alloc_preg (cfg);
4455         int low2_reg = alloc_preg (cfg);
4456         int high1_reg = alloc_preg (cfg);
4457         int high2_reg = alloc_preg (cfg);
4458         int realidx1_reg = alloc_preg (cfg);
4459         int realidx2_reg = alloc_preg (cfg);
4460         int sum_reg = alloc_preg (cfg);
4461         int index1, index2, tmpreg;
4462         MonoInst *ins;
4463         guint32 size;
4464
4465         mono_class_init (klass);
4466         size = mono_class_array_element_size (klass);
4467
4468         index1 = index_ins1->dreg;
4469         index2 = index_ins2->dreg;
4470
4471 #if SIZEOF_REGISTER == 8
4472         /* The array reg is 64 bits but the index reg is only 32 */
4473         if (COMPILE_LLVM (cfg)) {
4474                 /* Not needed */
4475         } else {
4476                 tmpreg = alloc_preg (cfg);
4477                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4478                 index1 = tmpreg;
4479                 tmpreg = alloc_preg (cfg);
4480                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4481                 index2 = tmpreg;
4482         }
4483 #else
4484         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4485         tmpreg = -1;
4486 #endif
4487
4488         /* range checking */
4489         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4490                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4491
4492         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4493                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4494         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4495         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4496                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4497         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4498         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4499
4500         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4501                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4502         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4503         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4504                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4505         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4506         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4507
4508         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4509         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4510         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4511         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4512         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4513
4514         ins->type = STACK_MP;
4515         ins->klass = klass;
4516         MONO_ADD_INS (cfg->cbb, ins);
4517
4518         return ins;
4519 }
4520
4521 static MonoInst*
4522 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4523 {
4524         int rank;
4525         MonoInst *addr;
4526         MonoMethod *addr_method;
4527         int element_size;
4528         MonoClass *eclass = cmethod->klass->element_class;
4529
4530         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4531
4532         if (rank == 1)
4533                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4534
4535         /* emit_ldelema_2 depends on OP_LMUL */
4536         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4537                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4538         }
4539
4540         if (mini_is_gsharedvt_variable_klass (eclass))
4541                 element_size = 0;
4542         else
4543                 element_size = mono_class_array_element_size (eclass);
4544         addr_method = mono_marshal_get_array_address (rank, element_size);
4545         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4546
4547         return addr;
4548 }
4549
4550 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4551 static MonoInst*
4552 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4553 {
4554         MonoInst *addr, *store, *load;
4555         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4556
4557         /* the bounds check is already done by the callers */
4558         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4559         if (is_set) {
4560                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4561                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4562                 if (mini_type_is_reference (&eklass->byval_arg))
4563                         mini_emit_write_barrier (cfg, addr, load);
4564         } else {
4565                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4566                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4567         }
4568         return store;
4569 }
4570
4571
4572 static gboolean
4573 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4574 {
4575         return mini_type_is_reference (&klass->byval_arg);
4576 }
4577
4578 static MonoInst*
4579 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4580 {
4581         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4582                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4583                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4584                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4585                 MonoInst *iargs [3];
4586
4587                 if (!helper->slot)
4588                         mono_class_setup_vtable (obj_array);
4589                 g_assert (helper->slot);
4590
4591                 if (sp [0]->type != STACK_OBJ)
4592                         return NULL;
4593                 if (sp [2]->type != STACK_OBJ)
4594                         return NULL;
4595
4596                 iargs [2] = sp [2];
4597                 iargs [1] = sp [1];
4598                 iargs [0] = sp [0];
4599
4600                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4601         } else {
4602                 MonoInst *ins;
4603
4604                 if (mini_is_gsharedvt_variable_klass (klass)) {
4605                         MonoInst *addr;
4606
4607                         // FIXME-VT: OP_ICONST optimization
4608                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4609                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4610                         ins->opcode = OP_STOREV_MEMBASE;
4611                 } else if (sp [1]->opcode == OP_ICONST) {
4612                         int array_reg = sp [0]->dreg;
4613                         int index_reg = sp [1]->dreg;
4614                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4615
4616                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4617                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4618
4619                         if (safety_checks)
4620                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4621                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4622                 } else {
4623                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4624                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4625                         if (generic_class_is_reference_type (cfg, klass))
4626                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4627                 }
4628                 return ins;
4629         }
4630 }
4631
4632 static MonoInst*
4633 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4634 {
4635         MonoClass *eklass;
4636
4637         if (is_set)
4638                 eklass = mono_class_from_mono_type (fsig->params [2]);
4639         else
4640                 eklass = mono_class_from_mono_type (fsig->ret);
4641
4642         if (is_set) {
4643                 return emit_array_store (cfg, eklass, args, FALSE);
4644         } else {
4645                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4646                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4647                 return ins;
4648         }
4649 }
4650
4651 static gboolean
4652 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4653 {
4654         uint32_t align;
4655         int param_size, return_size;
4656
4657         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4658         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4659
4660         if (cfg->verbose_level > 3)
4661                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4662
4663         //Don't allow mixing reference types with value types
4664         if (param_klass->valuetype != return_klass->valuetype) {
4665                 if (cfg->verbose_level > 3)
4666                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4667                 return FALSE;
4668         }
4669
4670         if (!param_klass->valuetype) {
4671                 if (cfg->verbose_level > 3)
4672                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4673                 return TRUE;
4674         }
4675
4676         //That are blitable
4677         if (param_klass->has_references || return_klass->has_references)
4678                 return FALSE;
4679
4680         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4681         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4682                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4683                         if (cfg->verbose_level > 3)
4684                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4685                 return FALSE;
4686         }
4687
4688         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4689                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4690                 if (cfg->verbose_level > 3)
4691                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4692                 return FALSE;
4693         }
4694
4695         param_size = mono_class_value_size (param_klass, &align);
4696         return_size = mono_class_value_size (return_klass, &align);
4697
4698         //We can do it if sizes match
4699         if (param_size == return_size) {
4700                 if (cfg->verbose_level > 3)
4701                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4702                 return TRUE;
4703         }
4704
4705         //No simple way to handle struct if sizes don't match
4706         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4707                 if (cfg->verbose_level > 3)
4708                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4709                 return FALSE;
4710         }
4711
4712         /*
4713          * Same reg size category.
4714          * A quick note on why we don't require widening here.
4715          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4716          *
4717          * Since the source value comes from a function argument, the JIT will already have
4718          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4719          */
4720         if (param_size <= 4 && return_size <= 4) {
4721                 if (cfg->verbose_level > 3)
4722                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4723                 return TRUE;
4724         }
4725
4726         return FALSE;
4727 }
4728
4729 static MonoInst*
4730 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4731 {
4732         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4733         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4734
4735         if (mini_is_gsharedvt_variable_type (fsig->ret))
4736                 return NULL;
4737
4738         //Valuetypes that are semantically equivalent or numbers than can be widened to
4739         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4740                 return args [0];
4741
4742         //Arrays of valuetypes that are semantically equivalent
4743         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4744                 return args [0];
4745
4746         return NULL;
4747 }
4748
4749 static MonoInst*
4750 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4751 {
4752 #ifdef MONO_ARCH_SIMD_INTRINSICS
4753         MonoInst *ins = NULL;
4754
4755         if (cfg->opt & MONO_OPT_SIMD) {
4756                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4757                 if (ins)
4758                         return ins;
4759         }
4760 #endif
4761
4762         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4763 }
4764
4765 MonoInst*
4766 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4767 {
4768         MonoInst *ins = NULL;
4769         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4770         MONO_ADD_INS (cfg->cbb, ins);
4771         ins->backend.memory_barrier_kind = kind;
4772
4773         return ins;
4774 }
4775
4776 static MonoInst*
4777 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4778 {
4779         MonoInst *ins = NULL;
4780         int opcode = 0;
4781
4782         /* The LLVM backend supports these intrinsics */
4783         if (cmethod->klass == mono_defaults.math_class) {
4784                 if (strcmp (cmethod->name, "Sin") == 0) {
4785                         opcode = OP_SIN;
4786                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4787                         opcode = OP_COS;
4788                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4789                         opcode = OP_SQRT;
4790                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4791                         opcode = OP_ABS;
4792                 }
4793
4794                 if (opcode && fsig->param_count == 1) {
4795                         MONO_INST_NEW (cfg, ins, opcode);
4796                         ins->type = STACK_R8;
4797                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4798                         ins->sreg1 = args [0]->dreg;
4799                         MONO_ADD_INS (cfg->cbb, ins);
4800                 }
4801
4802                 opcode = 0;
4803                 if (cfg->opt & MONO_OPT_CMOV) {
4804                         if (strcmp (cmethod->name, "Min") == 0) {
4805                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4806                                         opcode = OP_IMIN;
4807                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4808                                         opcode = OP_IMIN_UN;
4809                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4810                                         opcode = OP_LMIN;
4811                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4812                                         opcode = OP_LMIN_UN;
4813                         } else if (strcmp (cmethod->name, "Max") == 0) {
4814                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4815                                         opcode = OP_IMAX;
4816                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4817                                         opcode = OP_IMAX_UN;
4818                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4819                                         opcode = OP_LMAX;
4820                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4821                                         opcode = OP_LMAX_UN;
4822                         }
4823                 }
4824
4825                 if (opcode && fsig->param_count == 2) {
4826                         MONO_INST_NEW (cfg, ins, opcode);
4827                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4828                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4829                         ins->sreg1 = args [0]->dreg;
4830                         ins->sreg2 = args [1]->dreg;
4831                         MONO_ADD_INS (cfg->cbb, ins);
4832                 }
4833         }
4834
4835         return ins;
4836 }
4837
4838 static MonoInst*
4839 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4840 {
4841         if (cmethod->klass == mono_defaults.array_class) {
4842                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4843                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4844                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4845                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4846                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4847                         return emit_array_unsafe_mov (cfg, fsig, args);
4848         }
4849
4850         return NULL;
4851 }
4852
4853
4854 static gboolean
4855 mono_type_is_native_blittable (MonoType *t)
4856 {
4857         if (MONO_TYPE_IS_REFERENCE (t))
4858                 return FALSE;
4859
4860         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4861                 return TRUE;
4862
4863         MonoClass *klass = mono_class_from_mono_type (t);
4864
4865         //MonoClass::blitable depends on mono_class_setup_fields being done.
4866         mono_class_setup_fields (klass);
4867         if (!klass->blittable)
4868                 return FALSE;
4869
4870         // If the native marshal size is different we can't convert PtrToStructure to a type load
4871         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4872                 return FALSE;
4873
4874         return TRUE;
4875 }
4876
4877
4878 static MonoInst*
4879 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4880 {
4881         MonoInst *ins = NULL;
4882         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4883
4884         if (cmethod->klass == mono_defaults.string_class) {
4885                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4886                         int dreg = alloc_ireg (cfg);
4887                         int index_reg = alloc_preg (cfg);
4888                         int add_reg = alloc_preg (cfg);
4889
4890 #if SIZEOF_REGISTER == 8
4891                         if (COMPILE_LLVM (cfg)) {
4892                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4893                         } else {
4894                                 /* The array reg is 64 bits but the index reg is only 32 */
4895                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4896                         }
4897 #else
4898                         index_reg = args [1]->dreg;
4899 #endif
4900                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4901
4902 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4903                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4904                         add_reg = ins->dreg;
4905                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4906                                                                    add_reg, 0);
4907 #else
4908                         int mult_reg = alloc_preg (cfg);
4909                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4910                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4911                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4912                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4913 #endif
4914                         type_from_op (cfg, ins, NULL, NULL);
4915                         return ins;
4916                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4917                         int dreg = alloc_ireg (cfg);
4918                         /* Decompose later to allow more optimizations */
4919                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4920                         ins->type = STACK_I4;
4921                         ins->flags |= MONO_INST_FAULT;
4922                         cfg->cbb->has_array_access = TRUE;
4923                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4924
4925                         return ins;
4926                 } else
4927                         return NULL;
4928         } else if (cmethod->klass == mono_defaults.object_class) {
4929                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4930                         int dreg = alloc_ireg_ref (cfg);
4931                         int vt_reg = alloc_preg (cfg);
4932                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4933                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4934                         type_from_op (cfg, ins, NULL, NULL);
4935
4936                         return ins;
4937                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4938                         int dreg = alloc_ireg (cfg);
4939                         int t1 = alloc_ireg (cfg);
4940
4941                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4942                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4943                         ins->type = STACK_I4;
4944
4945                         return ins;
4946                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4947                         MONO_INST_NEW (cfg, ins, OP_NOP);
4948                         MONO_ADD_INS (cfg->cbb, ins);
4949                         return ins;
4950                 } else
4951                         return NULL;
4952         } else if (cmethod->klass == mono_defaults.array_class) {
4953                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4954                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4955                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4956                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4957
4958 #ifndef MONO_BIG_ARRAYS
4959                 /*
4960                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4961                  * Array methods.
4962                  */
4963                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4964                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4965                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4966                         int dreg = alloc_ireg (cfg);
4967                         int bounds_reg = alloc_ireg_mp (cfg);
4968                         MonoBasicBlock *end_bb, *szarray_bb;
4969                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4970
4971                         NEW_BBLOCK (cfg, end_bb);
4972                         NEW_BBLOCK (cfg, szarray_bb);
4973
4974                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4975                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4976                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4977                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
4978                         /* Non-szarray case */
4979                         if (get_length)
4980                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4981                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4982                         else
4983                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4984                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4985                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4986                         MONO_START_BB (cfg, szarray_bb);
4987                         /* Szarray case */
4988                         if (get_length)
4989                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
4990                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
4991                         else
4992                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4993                         MONO_START_BB (cfg, end_bb);
4994
4995                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
4996                         ins->type = STACK_I4;
4997
4998                         return ins;
4999                 }
5000 #endif
5001
5002                 if (cmethod->name [0] != 'g')
5003                         return NULL;
5004
5005                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5006                         int dreg = alloc_ireg (cfg);
5007                         int vtable_reg = alloc_preg (cfg);
5008                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5009                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5010                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5011                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5012                         type_from_op (cfg, ins, NULL, NULL);
5013
5014                         return ins;
5015                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5016                         int dreg = alloc_ireg (cfg);
5017
5018                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5019                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5020                         type_from_op (cfg, ins, NULL, NULL);
5021
5022                         return ins;
5023                 } else
5024                         return NULL;
5025         } else if (cmethod->klass == runtime_helpers_class) {
5026                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5027                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5028                         return ins;
5029                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5030                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5031                         g_assert (ctx);
5032                         g_assert (ctx->method_inst);
5033                         g_assert (ctx->method_inst->type_argc == 1);
5034                         MonoType *arg_type = ctx->method_inst->type_argv [0];
5035                         MonoType *t;
5036                         MonoClass *klass;
5037
5038                         ins = NULL;
5039
5040                         /* Resolve the argument class as possible so we can handle common cases fast */
5041                         t = mini_get_underlying_type (arg_type);
5042                         klass = mono_class_from_mono_type (t);
5043                         mono_class_init (klass);
5044                         if (MONO_TYPE_IS_REFERENCE (t))
5045                                 EMIT_NEW_ICONST (cfg, ins, 1);
5046                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5047                                 EMIT_NEW_ICONST (cfg, ins, 0);
5048                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5049                                 EMIT_NEW_ICONST (cfg, ins, 1);
5050                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5051                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5052                         else {
5053                                 g_assert (cfg->gshared);
5054
5055                                 /* Have to use the original argument class here */
5056                                 MonoClass *arg_class = mono_class_from_mono_type (arg_type);
5057                                 int context_used = mini_class_check_context_used (cfg, arg_class);
5058
5059                                 /* This returns 1 or 2 */
5060                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, arg_class, MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5061                                 int dreg = alloc_ireg (cfg);
5062                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5063                         }
5064
5065                         return ins;
5066                 } else
5067                         return NULL;
5068         } else if (cmethod->klass == mono_defaults.monitor_class) {
5069                 gboolean is_enter = FALSE;
5070                 gboolean is_v4 = FALSE;
5071
5072                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5073                         is_enter = TRUE;
5074                         is_v4 = TRUE;
5075                 }
5076                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5077                         is_enter = TRUE;
5078
5079                 if (is_enter) {
5080                         /*
5081                          * To make async stack traces work, icalls which can block should have a wrapper.
5082                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5083                          */
5084                         MonoBasicBlock *end_bb;
5085
5086                         NEW_BBLOCK (cfg, end_bb);
5087
5088                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5089                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5090                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5091                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5092                         MONO_START_BB (cfg, end_bb);
5093                         return ins;
5094                 }
5095         } else if (cmethod->klass == mono_defaults.thread_class) {
5096                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5097                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5098                         MONO_ADD_INS (cfg->cbb, ins);
5099                         return ins;
5100                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5101                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5102                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5103                         guint32 opcode = 0;
5104                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5105
5106                         if (fsig->params [0]->type == MONO_TYPE_I1)
5107                                 opcode = OP_LOADI1_MEMBASE;
5108                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5109                                 opcode = OP_LOADU1_MEMBASE;
5110                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5111                                 opcode = OP_LOADI2_MEMBASE;
5112                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5113                                 opcode = OP_LOADU2_MEMBASE;
5114                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5115                                 opcode = OP_LOADI4_MEMBASE;
5116                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5117                                 opcode = OP_LOADU4_MEMBASE;
5118                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5119                                 opcode = OP_LOADI8_MEMBASE;
5120                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5121                                 opcode = OP_LOADR4_MEMBASE;
5122                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5123                                 opcode = OP_LOADR8_MEMBASE;
5124                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5125                                 opcode = OP_LOAD_MEMBASE;
5126
5127                         if (opcode) {
5128                                 MONO_INST_NEW (cfg, ins, opcode);
5129                                 ins->inst_basereg = args [0]->dreg;
5130                                 ins->inst_offset = 0;
5131                                 MONO_ADD_INS (cfg->cbb, ins);
5132
5133                                 switch (fsig->params [0]->type) {
5134                                 case MONO_TYPE_I1:
5135                                 case MONO_TYPE_U1:
5136                                 case MONO_TYPE_I2:
5137                                 case MONO_TYPE_U2:
5138                                 case MONO_TYPE_I4:
5139                                 case MONO_TYPE_U4:
5140                                         ins->dreg = mono_alloc_ireg (cfg);
5141                                         ins->type = STACK_I4;
5142                                         break;
5143                                 case MONO_TYPE_I8:
5144                                 case MONO_TYPE_U8:
5145                                         ins->dreg = mono_alloc_lreg (cfg);
5146                                         ins->type = STACK_I8;
5147                                         break;
5148                                 case MONO_TYPE_I:
5149                                 case MONO_TYPE_U:
5150                                         ins->dreg = mono_alloc_ireg (cfg);
5151 #if SIZEOF_REGISTER == 8
5152                                         ins->type = STACK_I8;
5153 #else
5154                                         ins->type = STACK_I4;
5155 #endif
5156                                         break;
5157                                 case MONO_TYPE_R4:
5158                                 case MONO_TYPE_R8:
5159                                         ins->dreg = mono_alloc_freg (cfg);
5160                                         ins->type = STACK_R8;
5161                                         break;
5162                                 default:
5163                                         g_assert (mini_type_is_reference (fsig->params [0]));
5164                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5165                                         ins->type = STACK_OBJ;
5166                                         break;
5167                                 }
5168
5169                                 if (opcode == OP_LOADI8_MEMBASE)
5170                                         ins = mono_decompose_opcode (cfg, ins);
5171
5172                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5173
5174                                 return ins;
5175                         }
5176                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5177                         guint32 opcode = 0;
5178                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5179
5180                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5181                                 opcode = OP_STOREI1_MEMBASE_REG;
5182                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5183                                 opcode = OP_STOREI2_MEMBASE_REG;
5184                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5185                                 opcode = OP_STOREI4_MEMBASE_REG;
5186                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5187                                 opcode = OP_STOREI8_MEMBASE_REG;
5188                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5189                                 opcode = OP_STORER4_MEMBASE_REG;
5190                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5191                                 opcode = OP_STORER8_MEMBASE_REG;
5192                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5193                                 opcode = OP_STORE_MEMBASE_REG;
5194
5195                         if (opcode) {
5196                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5197
5198                                 MONO_INST_NEW (cfg, ins, opcode);
5199                                 ins->sreg1 = args [1]->dreg;
5200                                 ins->inst_destbasereg = args [0]->dreg;
5201                                 ins->inst_offset = 0;
5202                                 MONO_ADD_INS (cfg->cbb, ins);
5203
5204                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5205                                         ins = mono_decompose_opcode (cfg, ins);
5206
5207                                 return ins;
5208                         }
5209                 }
5210         } else if (cmethod->klass->image == mono_defaults.corlib &&
5211                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5212                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5213                 ins = NULL;
5214
5215 #if SIZEOF_REGISTER == 8
5216                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5217                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5218                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5219                                 ins->dreg = mono_alloc_preg (cfg);
5220                                 ins->sreg1 = args [0]->dreg;
5221                                 ins->type = STACK_I8;
5222                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5223                                 MONO_ADD_INS (cfg->cbb, ins);
5224                         } else {
5225                                 MonoInst *load_ins;
5226
5227                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5228
5229                                 /* 64 bit reads are already atomic */
5230                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5231                                 load_ins->dreg = mono_alloc_preg (cfg);
5232                                 load_ins->inst_basereg = args [0]->dreg;
5233                                 load_ins->inst_offset = 0;
5234                                 load_ins->type = STACK_I8;
5235                                 MONO_ADD_INS (cfg->cbb, load_ins);
5236
5237                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5238
5239                                 ins = load_ins;
5240                         }
5241                 }
5242 #endif
5243
5244                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5245                         MonoInst *ins_iconst;
5246                         guint32 opcode = 0;
5247
5248                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5249                                 opcode = OP_ATOMIC_ADD_I4;
5250                                 cfg->has_atomic_add_i4 = TRUE;
5251                         }
5252 #if SIZEOF_REGISTER == 8
5253                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5254                                 opcode = OP_ATOMIC_ADD_I8;
5255 #endif
5256                         if (opcode) {
5257                                 if (!mono_arch_opcode_supported (opcode))
5258                                         return NULL;
5259                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5260                                 ins_iconst->inst_c0 = 1;
5261                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5262                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5263
5264                                 MONO_INST_NEW (cfg, ins, opcode);
5265                                 ins->dreg = mono_alloc_ireg (cfg);
5266                                 ins->inst_basereg = args [0]->dreg;
5267                                 ins->inst_offset = 0;
5268                                 ins->sreg2 = ins_iconst->dreg;
5269                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5270                                 MONO_ADD_INS (cfg->cbb, ins);
5271                         }
5272                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5273                         MonoInst *ins_iconst;
5274                         guint32 opcode = 0;
5275
5276                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5277                                 opcode = OP_ATOMIC_ADD_I4;
5278                                 cfg->has_atomic_add_i4 = TRUE;
5279                         }
5280 #if SIZEOF_REGISTER == 8
5281                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5282                                 opcode = OP_ATOMIC_ADD_I8;
5283 #endif
5284                         if (opcode) {
5285                                 if (!mono_arch_opcode_supported (opcode))
5286                                         return NULL;
5287                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5288                                 ins_iconst->inst_c0 = -1;
5289                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5290                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5291
5292                                 MONO_INST_NEW (cfg, ins, opcode);
5293                                 ins->dreg = mono_alloc_ireg (cfg);
5294                                 ins->inst_basereg = args [0]->dreg;
5295                                 ins->inst_offset = 0;
5296                                 ins->sreg2 = ins_iconst->dreg;
5297                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5298                                 MONO_ADD_INS (cfg->cbb, ins);
5299                         }
5300                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5301                         guint32 opcode = 0;
5302
5303                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5304                                 opcode = OP_ATOMIC_ADD_I4;
5305                                 cfg->has_atomic_add_i4 = TRUE;
5306                         }
5307 #if SIZEOF_REGISTER == 8
5308                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5309                                 opcode = OP_ATOMIC_ADD_I8;
5310 #endif
5311                         if (opcode) {
5312                                 if (!mono_arch_opcode_supported (opcode))
5313                                         return NULL;
5314                                 MONO_INST_NEW (cfg, ins, opcode);
5315                                 ins->dreg = mono_alloc_ireg (cfg);
5316                                 ins->inst_basereg = args [0]->dreg;
5317                                 ins->inst_offset = 0;
5318                                 ins->sreg2 = args [1]->dreg;
5319                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5320                                 MONO_ADD_INS (cfg->cbb, ins);
5321                         }
5322                 }
5323                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5324                         MonoInst *f2i = NULL, *i2f;
5325                         guint32 opcode, f2i_opcode, i2f_opcode;
5326                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5327                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5328
5329                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5330                             fsig->params [0]->type == MONO_TYPE_R4) {
5331                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5332                                 f2i_opcode = OP_MOVE_F_TO_I4;
5333                                 i2f_opcode = OP_MOVE_I4_TO_F;
5334                                 cfg->has_atomic_exchange_i4 = TRUE;
5335                         }
5336 #if SIZEOF_REGISTER == 8
5337                         else if (is_ref ||
5338                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5339                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5340                                  fsig->params [0]->type == MONO_TYPE_I) {
5341                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5342                                 f2i_opcode = OP_MOVE_F_TO_I8;
5343                                 i2f_opcode = OP_MOVE_I8_TO_F;
5344                         }
5345 #else
5346                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5347                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5348                                 cfg->has_atomic_exchange_i4 = TRUE;
5349                         }
5350 #endif
5351                         else
5352                                 return NULL;
5353
5354                         if (!mono_arch_opcode_supported (opcode))
5355                                 return NULL;
5356
5357                         if (is_float) {
5358                                 /* TODO: Decompose these opcodes instead of bailing here. */
5359                                 if (COMPILE_SOFT_FLOAT (cfg))
5360                                         return NULL;
5361
5362                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5363                                 f2i->dreg = mono_alloc_ireg (cfg);
5364                                 f2i->sreg1 = args [1]->dreg;
5365                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5366                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5367                                 MONO_ADD_INS (cfg->cbb, f2i);
5368                         }
5369
5370                         MONO_INST_NEW (cfg, ins, opcode);
5371                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5372                         ins->inst_basereg = args [0]->dreg;
5373                         ins->inst_offset = 0;
5374                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5375                         MONO_ADD_INS (cfg->cbb, ins);
5376
5377                         switch (fsig->params [0]->type) {
5378                         case MONO_TYPE_I4:
5379                                 ins->type = STACK_I4;
5380                                 break;
5381                         case MONO_TYPE_I8:
5382                                 ins->type = STACK_I8;
5383                                 break;
5384                         case MONO_TYPE_I:
5385 #if SIZEOF_REGISTER == 8
5386                                 ins->type = STACK_I8;
5387 #else
5388                                 ins->type = STACK_I4;
5389 #endif
5390                                 break;
5391                         case MONO_TYPE_R4:
5392                         case MONO_TYPE_R8:
5393                                 ins->type = STACK_R8;
5394                                 break;
5395                         default:
5396                                 g_assert (mini_type_is_reference (fsig->params [0]));
5397                                 ins->type = STACK_OBJ;
5398                                 break;
5399                         }
5400
5401                         if (is_float) {
5402                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5403                                 i2f->dreg = mono_alloc_freg (cfg);
5404                                 i2f->sreg1 = ins->dreg;
5405                                 i2f->type = STACK_R8;
5406                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5407                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5408                                 MONO_ADD_INS (cfg->cbb, i2f);
5409
5410                                 ins = i2f;
5411                         }
5412
5413                         if (cfg->gen_write_barriers && is_ref)
5414                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5415                 }
5416                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5417                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5418                         guint32 opcode, f2i_opcode, i2f_opcode;
5419                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5420                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5421
5422                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5423                             fsig->params [1]->type == MONO_TYPE_R4) {
5424                                 opcode = OP_ATOMIC_CAS_I4;
5425                                 f2i_opcode = OP_MOVE_F_TO_I4;
5426                                 i2f_opcode = OP_MOVE_I4_TO_F;
5427                                 cfg->has_atomic_cas_i4 = TRUE;
5428                         }
5429 #if SIZEOF_REGISTER == 8
5430                         else if (is_ref ||
5431                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5432                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5433                                  fsig->params [1]->type == MONO_TYPE_I) {
5434                                 opcode = OP_ATOMIC_CAS_I8;
5435                                 f2i_opcode = OP_MOVE_F_TO_I8;
5436                                 i2f_opcode = OP_MOVE_I8_TO_F;
5437                         }
5438 #else
5439                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5440                                 opcode = OP_ATOMIC_CAS_I4;
5441                                 cfg->has_atomic_cas_i4 = TRUE;
5442                         }
5443 #endif
5444                         else
5445                                 return NULL;
5446
5447                         if (!mono_arch_opcode_supported (opcode))
5448                                 return NULL;
5449
5450                         if (is_float) {
5451                                 /* TODO: Decompose these opcodes instead of bailing here. */
5452                                 if (COMPILE_SOFT_FLOAT (cfg))
5453                                         return NULL;
5454
5455                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5456                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5457                                 f2i_new->sreg1 = args [1]->dreg;
5458                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5459                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5460                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5461
5462                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5463                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5464                                 f2i_cmp->sreg1 = args [2]->dreg;
5465                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5466                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5467                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5468                         }
5469
5470                         MONO_INST_NEW (cfg, ins, opcode);
5471                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5472                         ins->sreg1 = args [0]->dreg;
5473                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5474                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5475                         MONO_ADD_INS (cfg->cbb, ins);
5476
5477                         switch (fsig->params [1]->type) {
5478                         case MONO_TYPE_I4:
5479                                 ins->type = STACK_I4;
5480                                 break;
5481                         case MONO_TYPE_I8:
5482                                 ins->type = STACK_I8;
5483                                 break;
5484                         case MONO_TYPE_I:
5485 #if SIZEOF_REGISTER == 8
5486                                 ins->type = STACK_I8;
5487 #else
5488                                 ins->type = STACK_I4;
5489 #endif
5490                                 break;
5491                         case MONO_TYPE_R4:
5492                                 ins->type = cfg->r4_stack_type;
5493                                 break;
5494                         case MONO_TYPE_R8:
5495                                 ins->type = STACK_R8;
5496                                 break;
5497                         default:
5498                                 g_assert (mini_type_is_reference (fsig->params [1]));
5499                                 ins->type = STACK_OBJ;
5500                                 break;
5501                         }
5502
5503                         if (is_float) {
5504                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5505                                 i2f->dreg = mono_alloc_freg (cfg);
5506                                 i2f->sreg1 = ins->dreg;
5507                                 i2f->type = STACK_R8;
5508                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5509                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5510                                 MONO_ADD_INS (cfg->cbb, i2f);
5511
5512                                 ins = i2f;
5513                         }
5514
5515                         if (cfg->gen_write_barriers && is_ref)
5516                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5517                 }
5518                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5519                          fsig->params [1]->type == MONO_TYPE_I4) {
5520                         MonoInst *cmp, *ceq;
5521
5522                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5523                                 return NULL;
5524
5525                         /* int32 r = CAS (location, value, comparand); */
5526                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5527                         ins->dreg = alloc_ireg (cfg);
5528                         ins->sreg1 = args [0]->dreg;
5529                         ins->sreg2 = args [1]->dreg;
5530                         ins->sreg3 = args [2]->dreg;
5531                         ins->type = STACK_I4;
5532                         MONO_ADD_INS (cfg->cbb, ins);
5533
5534                         /* bool result = r == comparand; */
5535                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5536                         cmp->sreg1 = ins->dreg;
5537                         cmp->sreg2 = args [2]->dreg;
5538                         cmp->type = STACK_I4;
5539                         MONO_ADD_INS (cfg->cbb, cmp);
5540
5541                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5542                         ceq->dreg = alloc_ireg (cfg);
5543                         ceq->type = STACK_I4;
5544                         MONO_ADD_INS (cfg->cbb, ceq);
5545
5546                         /* *success = result; */
5547                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5548
5549                         cfg->has_atomic_cas_i4 = TRUE;
5550                 }
5551                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5552                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5553
5554                 if (ins)
5555                         return ins;
5556         } else if (cmethod->klass->image == mono_defaults.corlib &&
5557                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5558                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5559                 ins = NULL;
5560
5561                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5562                         guint32 opcode = 0;
5563                         MonoType *t = fsig->params [0];
5564                         gboolean is_ref;
5565                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5566
5567                         g_assert (t->byref);
5568                         /* t is a byref type, so the reference check is more complicated */
5569                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5570                         if (t->type == MONO_TYPE_I1)
5571                                 opcode = OP_ATOMIC_LOAD_I1;
5572                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5573                                 opcode = OP_ATOMIC_LOAD_U1;
5574                         else if (t->type == MONO_TYPE_I2)
5575                                 opcode = OP_ATOMIC_LOAD_I2;
5576                         else if (t->type == MONO_TYPE_U2)
5577                                 opcode = OP_ATOMIC_LOAD_U2;
5578                         else if (t->type == MONO_TYPE_I4)
5579                                 opcode = OP_ATOMIC_LOAD_I4;
5580                         else if (t->type == MONO_TYPE_U4)
5581                                 opcode = OP_ATOMIC_LOAD_U4;
5582                         else if (t->type == MONO_TYPE_R4)
5583                                 opcode = OP_ATOMIC_LOAD_R4;
5584                         else if (t->type == MONO_TYPE_R8)
5585                                 opcode = OP_ATOMIC_LOAD_R8;
5586 #if SIZEOF_REGISTER == 8
5587                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5588                                 opcode = OP_ATOMIC_LOAD_I8;
5589                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5590                                 opcode = OP_ATOMIC_LOAD_U8;
5591 #else
5592                         else if (t->type == MONO_TYPE_I)
5593                                 opcode = OP_ATOMIC_LOAD_I4;
5594                         else if (is_ref || t->type == MONO_TYPE_U)
5595                                 opcode = OP_ATOMIC_LOAD_U4;
5596 #endif
5597
5598                         if (opcode) {
5599                                 if (!mono_arch_opcode_supported (opcode))
5600                                         return NULL;
5601
5602                                 MONO_INST_NEW (cfg, ins, opcode);
5603                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5604                                 ins->sreg1 = args [0]->dreg;
5605                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5606                                 MONO_ADD_INS (cfg->cbb, ins);
5607
5608                                 switch (t->type) {
5609                                 case MONO_TYPE_BOOLEAN:
5610                                 case MONO_TYPE_I1:
5611                                 case MONO_TYPE_U1:
5612                                 case MONO_TYPE_I2:
5613                                 case MONO_TYPE_U2:
5614                                 case MONO_TYPE_I4:
5615                                 case MONO_TYPE_U4:
5616                                         ins->type = STACK_I4;
5617                                         break;
5618                                 case MONO_TYPE_I8:
5619                                 case MONO_TYPE_U8:
5620                                         ins->type = STACK_I8;
5621                                         break;
5622                                 case MONO_TYPE_I:
5623                                 case MONO_TYPE_U:
5624 #if SIZEOF_REGISTER == 8
5625                                         ins->type = STACK_I8;
5626 #else
5627                                         ins->type = STACK_I4;
5628 #endif
5629                                         break;
5630                                 case MONO_TYPE_R4:
5631                                         ins->type = cfg->r4_stack_type;
5632                                         break;
5633                                 case MONO_TYPE_R8:
5634                                         ins->type = STACK_R8;
5635                                         break;
5636                                 default:
5637                                         g_assert (is_ref);
5638                                         ins->type = STACK_OBJ;
5639                                         break;
5640                                 }
5641                         }
5642                 }
5643
5644                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5645                         guint32 opcode = 0;
5646                         MonoType *t = fsig->params [0];
5647                         gboolean is_ref;
5648
5649                         g_assert (t->byref);
5650                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5651                         if (t->type == MONO_TYPE_I1)
5652                                 opcode = OP_ATOMIC_STORE_I1;
5653                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5654                                 opcode = OP_ATOMIC_STORE_U1;
5655                         else if (t->type == MONO_TYPE_I2)
5656                                 opcode = OP_ATOMIC_STORE_I2;
5657                         else if (t->type == MONO_TYPE_U2)
5658                                 opcode = OP_ATOMIC_STORE_U2;
5659                         else if (t->type == MONO_TYPE_I4)
5660                                 opcode = OP_ATOMIC_STORE_I4;
5661                         else if (t->type == MONO_TYPE_U4)
5662                                 opcode = OP_ATOMIC_STORE_U4;
5663                         else if (t->type == MONO_TYPE_R4)
5664                                 opcode = OP_ATOMIC_STORE_R4;
5665                         else if (t->type == MONO_TYPE_R8)
5666                                 opcode = OP_ATOMIC_STORE_R8;
5667 #if SIZEOF_REGISTER == 8
5668                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5669                                 opcode = OP_ATOMIC_STORE_I8;
5670                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5671                                 opcode = OP_ATOMIC_STORE_U8;
5672 #else
5673                         else if (t->type == MONO_TYPE_I)
5674                                 opcode = OP_ATOMIC_STORE_I4;
5675                         else if (is_ref || t->type == MONO_TYPE_U)
5676                                 opcode = OP_ATOMIC_STORE_U4;
5677 #endif
5678
5679                         if (opcode) {
5680                                 if (!mono_arch_opcode_supported (opcode))
5681                                         return NULL;
5682
5683                                 MONO_INST_NEW (cfg, ins, opcode);
5684                                 ins->dreg = args [0]->dreg;
5685                                 ins->sreg1 = args [1]->dreg;
5686                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5687                                 MONO_ADD_INS (cfg->cbb, ins);
5688
5689                                 if (cfg->gen_write_barriers && is_ref)
5690                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5691                         }
5692                 }
5693
5694                 if (ins)
5695                         return ins;
5696         } else if (cmethod->klass->image == mono_defaults.corlib &&
5697                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5698                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5699                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5700                         if (mini_should_insert_breakpoint (cfg->method)) {
5701                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5702                         } else {
5703                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5704                                 MONO_ADD_INS (cfg->cbb, ins);
5705                         }
5706                         return ins;
5707                 }
5708         } else if (cmethod->klass->image == mono_defaults.corlib &&
5709                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5710                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5711                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5712 #ifdef TARGET_WIN32
5713                         EMIT_NEW_ICONST (cfg, ins, 1);
5714 #else
5715                         EMIT_NEW_ICONST (cfg, ins, 0);
5716 #endif
5717                 }
5718         } else if (cmethod->klass->image == mono_defaults.corlib &&
5719                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5720                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5721                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5722                         /* No stack walks are currently available, so implement this as an intrinsic */
5723                         MonoInst *assembly_ins;
5724
5725                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5726                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5727                         return ins;
5728                 }
5729         } else if (cmethod->klass->image == mono_defaults.corlib &&
5730                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5731                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5732                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5733                         /* No stack walks are currently available, so implement this as an intrinsic */
5734                         MonoInst *method_ins;
5735                         MonoMethod *declaring = cfg->method;
5736
5737                         /* This returns the declaring generic method */
5738                         if (declaring->is_inflated)
5739                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5740                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5741                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5742                         cfg->no_inline = TRUE;
5743                         if (cfg->method != cfg->current_method)
5744                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5745                         return ins;
5746                 }
5747         } else if (cmethod->klass == mono_defaults.math_class) {
5748                 /*
5749                  * There is general branchless code for Min/Max, but it does not work for
5750                  * all inputs:
5751                  * http://everything2.com/?node_id=1051618
5752                  */
5753         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5754                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5755                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5756                 ins->dreg = alloc_preg (cfg);
5757                 ins->type = STACK_I4;
5758                 MONO_ADD_INS (cfg->cbb, ins);
5759                 return ins;
5760         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5761                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5762                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5763                                 !strcmp (cmethod->klass->name, "Selector")) ||
5764                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5765                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5766                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5767                                 !strcmp (cmethod->klass->name, "Selector"))
5768                            ) {
5769                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5770                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5771                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5772                     cfg->compile_aot) {
5773                         MonoInst *pi;
5774                         MonoJumpInfoToken *ji;
5775                         char *s;
5776
5777                         if (args [0]->opcode == OP_GOT_ENTRY) {
5778                                 pi = (MonoInst *)args [0]->inst_p1;
5779                                 g_assert (pi->opcode == OP_PATCH_INFO);
5780                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5781                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5782                         } else {
5783                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5784                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5785                         }
5786
5787                         NULLIFY_INS (args [0]);
5788
5789                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5790                         return_val_if_nok (&cfg->error, NULL);
5791
5792                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5793                         ins->dreg = mono_alloc_ireg (cfg);
5794                         // FIXME: Leaks
5795                         ins->inst_p0 = s;
5796                         MONO_ADD_INS (cfg->cbb, ins);
5797                         return ins;
5798                 }
5799         } else if (cmethod->klass->image == mono_defaults.corlib &&
5800                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5801                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5802                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5803                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5804                                 cmethod->is_inflated &&
5805                                 fsig->param_count == 1 &&
5806                                 !mini_method_check_context_used (cfg, cmethod)) {
5807
5808                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5809                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5810                         if (mono_type_is_native_blittable (arg0))
5811                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5812                 }
5813         }
5814
5815 #ifdef MONO_ARCH_SIMD_INTRINSICS
5816         if (cfg->opt & MONO_OPT_SIMD) {
5817                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5818                 if (ins)
5819                         return ins;
5820         }
5821 #endif
5822
5823         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5824         if (ins)
5825                 return ins;
5826
5827         if (COMPILE_LLVM (cfg)) {
5828                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5829                 if (ins)
5830                         return ins;
5831         }
5832
5833         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5834 }
5835
5836 /*
5837  * This entry point could be used later for arbitrary method
5838  * redirection.
5839  */
5840 inline static MonoInst*
5841 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5842                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5843 {
5844         if (method->klass == mono_defaults.string_class) {
5845                 /* managed string allocation support */
5846                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(cfg->opt & MONO_OPT_SHARED)) {
5847                         MonoInst *iargs [2];
5848                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5849                         MonoMethod *managed_alloc = NULL;
5850
5851                         g_assert (vtable); /*Should not fail since it System.String*/
5852 #ifndef MONO_CROSS_COMPILE
5853                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5854 #endif
5855                         if (!managed_alloc)
5856                                 return NULL;
5857                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5858                         iargs [1] = args [0];
5859                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5860                 }
5861         }
5862         return NULL;
5863 }
5864
5865 static void
5866 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5867 {
5868         MonoInst *store, *temp;
5869         int i;
5870
5871         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5872                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5873
5874                 /*
5875                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5876                  * would be different than the MonoInst's used to represent arguments, and
5877                  * the ldelema implementation can't deal with that.
5878                  * Solution: When ldelema is used on an inline argument, create a var for
5879                  * it, emit ldelema on that var, and emit the saving code below in
5880                  * inline_method () if needed.
5881                  */
5882                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5883                 cfg->args [i] = temp;
5884                 /* This uses cfg->args [i] which is set by the preceeding line */
5885                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5886                 store->cil_code = sp [0]->cil_code;
5887                 sp++;
5888         }
5889 }
5890
5891 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5892 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5893
5894 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5895 static gboolean
5896 check_inline_called_method_name_limit (MonoMethod *called_method)
5897 {
5898         int strncmp_result;
5899         static const char *limit = NULL;
5900
5901         if (limit == NULL) {
5902                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5903
5904                 if (limit_string != NULL)
5905                         limit = limit_string;
5906                 else
5907                         limit = "";
5908         }
5909
5910         if (limit [0] != '\0') {
5911                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5912
5913                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5914                 g_free (called_method_name);
5915
5916                 //return (strncmp_result <= 0);
5917                 return (strncmp_result == 0);
5918         } else {
5919                 return TRUE;
5920         }
5921 }
5922 #endif
5923
5924 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5925 static gboolean
5926 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5927 {
5928         int strncmp_result;
5929         static const char *limit = NULL;
5930
5931         if (limit == NULL) {
5932                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5933                 if (limit_string != NULL) {
5934                         limit = limit_string;
5935                 } else {
5936                         limit = "";
5937                 }
5938         }
5939
5940         if (limit [0] != '\0') {
5941                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5942
5943                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5944                 g_free (caller_method_name);
5945
5946                 //return (strncmp_result <= 0);
5947                 return (strncmp_result == 0);
5948         } else {
5949                 return TRUE;
5950         }
5951 }
5952 #endif
5953
5954 static void
5955 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5956 {
5957         static double r8_0 = 0.0;
5958         static float r4_0 = 0.0;
5959         MonoInst *ins;
5960         int t;
5961
5962         rtype = mini_get_underlying_type (rtype);
5963         t = rtype->type;
5964
5965         if (rtype->byref) {
5966                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5967         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5968                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5969         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5970                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5971         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5972                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5973                 ins->type = STACK_R4;
5974                 ins->inst_p0 = (void*)&r4_0;
5975                 ins->dreg = dreg;
5976                 MONO_ADD_INS (cfg->cbb, ins);
5977         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
5978                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5979                 ins->type = STACK_R8;
5980                 ins->inst_p0 = (void*)&r8_0;
5981                 ins->dreg = dreg;
5982                 MONO_ADD_INS (cfg->cbb, ins);
5983         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
5984                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
5985                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5986         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
5987                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
5988         } else {
5989                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5990         }
5991 }
5992
5993 static void
5994 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5995 {
5996         int t;
5997
5998         rtype = mini_get_underlying_type (rtype);
5999         t = rtype->type;
6000
6001         if (rtype->byref) {
6002                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6003         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6004                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6005         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6006                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6007         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6008                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6009         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6010                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6011         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6012                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6013                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6014         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6015                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6016         } else {
6017                 emit_init_rvar (cfg, dreg, rtype);
6018         }
6019 }
6020
6021 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6022 static void
6023 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6024 {
6025         MonoInst *var = cfg->locals [local];
6026         if (COMPILE_SOFT_FLOAT (cfg)) {
6027                 MonoInst *store;
6028                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6029                 emit_init_rvar (cfg, reg, type);
6030                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6031         } else {
6032                 if (init)
6033                         emit_init_rvar (cfg, var->dreg, type);
6034                 else
6035                         emit_dummy_init_rvar (cfg, var->dreg, type);
6036         }
6037 }
6038
6039 int
6040 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6041 {
6042         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6043 }
6044
6045 /*
6046  * inline_method:
6047  *
6048  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6049  */
6050 static int
6051 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6052                guchar *ip, guint real_offset, gboolean inline_always)
6053 {
6054         MonoError error;
6055         MonoInst *ins, *rvar = NULL;
6056         MonoMethodHeader *cheader;
6057         MonoBasicBlock *ebblock, *sbblock;
6058         int i, costs;
6059         MonoMethod *prev_inlined_method;
6060         MonoInst **prev_locals, **prev_args;
6061         MonoType **prev_arg_types;
6062         guint prev_real_offset;
6063         GHashTable *prev_cbb_hash;
6064         MonoBasicBlock **prev_cil_offset_to_bb;
6065         MonoBasicBlock *prev_cbb;
6066         const unsigned char *prev_ip;
6067         unsigned char *prev_cil_start;
6068         guint32 prev_cil_offset_to_bb_len;
6069         MonoMethod *prev_current_method;
6070         MonoGenericContext *prev_generic_context;
6071         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6072
6073         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6074
6075 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6076         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6077                 return 0;
6078 #endif
6079 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6080         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6081                 return 0;
6082 #endif
6083
6084         if (!fsig)
6085                 fsig = mono_method_signature (cmethod);
6086
6087         if (cfg->verbose_level > 2)
6088                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6089
6090         if (!cmethod->inline_info) {
6091                 cfg->stat_inlineable_methods++;
6092                 cmethod->inline_info = 1;
6093         }
6094
6095         /* allocate local variables */
6096         cheader = mono_method_get_header_checked (cmethod, &error);
6097         if (!cheader) {
6098                 if (inline_always) {
6099                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6100                         mono_error_move (&cfg->error, &error);
6101                 } else {
6102                         mono_error_cleanup (&error);
6103                 }
6104                 return 0;
6105         }
6106
6107         /*Must verify before creating locals as it can cause the JIT to assert.*/
6108         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6109                 mono_metadata_free_mh (cheader);
6110                 return 0;
6111         }
6112
6113         /* allocate space to store the return value */
6114         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6115                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6116         }
6117
6118         prev_locals = cfg->locals;
6119         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6120         for (i = 0; i < cheader->num_locals; ++i)
6121                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6122
6123         /* allocate start and end blocks */
6124         /* This is needed so if the inline is aborted, we can clean up */
6125         NEW_BBLOCK (cfg, sbblock);
6126         sbblock->real_offset = real_offset;
6127
6128         NEW_BBLOCK (cfg, ebblock);
6129         ebblock->block_num = cfg->num_bblocks++;
6130         ebblock->real_offset = real_offset;
6131
6132         prev_args = cfg->args;
6133         prev_arg_types = cfg->arg_types;
6134         prev_inlined_method = cfg->inlined_method;
6135         cfg->inlined_method = cmethod;
6136         cfg->ret_var_set = FALSE;
6137         cfg->inline_depth ++;
6138         prev_real_offset = cfg->real_offset;
6139         prev_cbb_hash = cfg->cbb_hash;
6140         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6141         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6142         prev_cil_start = cfg->cil_start;
6143         prev_ip = cfg->ip;
6144         prev_cbb = cfg->cbb;
6145         prev_current_method = cfg->current_method;
6146         prev_generic_context = cfg->generic_context;
6147         prev_ret_var_set = cfg->ret_var_set;
6148         prev_disable_inline = cfg->disable_inline;
6149
6150         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6151                 virtual_ = TRUE;
6152
6153         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6154
6155         ret_var_set = cfg->ret_var_set;
6156
6157         cfg->inlined_method = prev_inlined_method;
6158         cfg->real_offset = prev_real_offset;
6159         cfg->cbb_hash = prev_cbb_hash;
6160         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6161         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6162         cfg->cil_start = prev_cil_start;
6163         cfg->ip = prev_ip;
6164         cfg->locals = prev_locals;
6165         cfg->args = prev_args;
6166         cfg->arg_types = prev_arg_types;
6167         cfg->current_method = prev_current_method;
6168         cfg->generic_context = prev_generic_context;
6169         cfg->ret_var_set = prev_ret_var_set;
6170         cfg->disable_inline = prev_disable_inline;
6171         cfg->inline_depth --;
6172
6173         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6174                 if (cfg->verbose_level > 2)
6175                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6176
6177                 cfg->stat_inlined_methods++;
6178
6179                 /* always add some code to avoid block split failures */
6180                 MONO_INST_NEW (cfg, ins, OP_NOP);
6181                 MONO_ADD_INS (prev_cbb, ins);
6182
6183                 prev_cbb->next_bb = sbblock;
6184                 link_bblock (cfg, prev_cbb, sbblock);
6185
6186                 /*
6187                  * Get rid of the begin and end bblocks if possible to aid local
6188                  * optimizations.
6189                  */
6190                 if (prev_cbb->out_count == 1)
6191                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6192
6193                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6194                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6195
6196                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6197                         MonoBasicBlock *prev = ebblock->in_bb [0];
6198
6199                         if (prev->next_bb == ebblock) {
6200                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6201                                 cfg->cbb = prev;
6202                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6203                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6204                                         cfg->cbb = prev_cbb;
6205                                 }
6206                         } else {
6207                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6208                                 cfg->cbb = ebblock;
6209                         }
6210                 } else {
6211                         /*
6212                          * Its possible that the rvar is set in some prev bblock, but not in others.
6213                          * (#1835).
6214                          */
6215                         if (rvar) {
6216                                 MonoBasicBlock *bb;
6217
6218                                 for (i = 0; i < ebblock->in_count; ++i) {
6219                                         bb = ebblock->in_bb [i];
6220
6221                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6222                                                 cfg->cbb = bb;
6223
6224                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6225                                         }
6226                                 }
6227                         }
6228
6229                         cfg->cbb = ebblock;
6230                 }
6231
6232                 if (rvar) {
6233                         /*
6234                          * If the inlined method contains only a throw, then the ret var is not
6235                          * set, so set it to a dummy value.
6236                          */
6237                         if (!ret_var_set)
6238                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6239
6240                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6241                         *sp++ = ins;
6242                 }
6243                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6244                 return costs + 1;
6245         } else {
6246                 if (cfg->verbose_level > 2)
6247                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6248                 cfg->exception_type = MONO_EXCEPTION_NONE;
6249
6250                 /* This gets rid of the newly added bblocks */
6251                 cfg->cbb = prev_cbb;
6252         }
6253         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6254         return 0;
6255 }
6256
6257 /*
6258  * Some of these comments may well be out-of-date.
6259  * Design decisions: we do a single pass over the IL code (and we do bblock
6260  * splitting/merging in the few cases when it's required: a back jump to an IL
6261  * address that was not already seen as bblock starting point).
6262  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6263  * Complex operations are decomposed in simpler ones right away. We need to let the
6264  * arch-specific code peek and poke inside this process somehow (except when the
6265  * optimizations can take advantage of the full semantic info of coarse opcodes).
6266  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6267  * MonoInst->opcode initially is the IL opcode or some simplification of that
6268  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6269  * opcode with value bigger than OP_LAST.
6270  * At this point the IR can be handed over to an interpreter, a dumb code generator
6271  * or to the optimizing code generator that will translate it to SSA form.
6272  *
6273  * Profiling directed optimizations.
6274  * We may compile by default with few or no optimizations and instrument the code
6275  * or the user may indicate what methods to optimize the most either in a config file
6276  * or through repeated runs where the compiler applies offline the optimizations to
6277  * each method and then decides if it was worth it.
6278  */
6279
6280 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6281 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6282 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6283 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6284 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6285 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6286 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6287 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6288
6289 /* offset from br.s -> br like opcodes */
6290 #define BIG_BRANCH_OFFSET 13
6291
6292 static gboolean
6293 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6294 {
6295         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6296
6297         return b == NULL || b == bb;
6298 }
6299
6300 static int
6301 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6302 {
6303         unsigned char *ip = start;
6304         unsigned char *target;
6305         int i;
6306         guint cli_addr;
6307         MonoBasicBlock *bblock;
6308         const MonoOpcode *opcode;
6309
6310         while (ip < end) {
6311                 cli_addr = ip - start;
6312                 i = mono_opcode_value ((const guint8 **)&ip, end);
6313                 if (i < 0)
6314                         UNVERIFIED;
6315                 opcode = &mono_opcodes [i];
6316                 switch (opcode->argument) {
6317                 case MonoInlineNone:
6318                         ip++;
6319                         break;
6320                 case MonoInlineString:
6321                 case MonoInlineType:
6322                 case MonoInlineField:
6323                 case MonoInlineMethod:
6324                 case MonoInlineTok:
6325                 case MonoInlineSig:
6326                 case MonoShortInlineR:
6327                 case MonoInlineI:
6328                         ip += 5;
6329                         break;
6330                 case MonoInlineVar:
6331                         ip += 3;
6332                         break;
6333                 case MonoShortInlineVar:
6334                 case MonoShortInlineI:
6335                         ip += 2;
6336                         break;
6337                 case MonoShortInlineBrTarget:
6338                         target = start + cli_addr + 2 + (signed char)ip [1];
6339                         GET_BBLOCK (cfg, bblock, target);
6340                         ip += 2;
6341                         if (ip < end)
6342                                 GET_BBLOCK (cfg, bblock, ip);
6343                         break;
6344                 case MonoInlineBrTarget:
6345                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6346                         GET_BBLOCK (cfg, bblock, target);
6347                         ip += 5;
6348                         if (ip < end)
6349                                 GET_BBLOCK (cfg, bblock, ip);
6350                         break;
6351                 case MonoInlineSwitch: {
6352                         guint32 n = read32 (ip + 1);
6353                         guint32 j;
6354                         ip += 5;
6355                         cli_addr += 5 + 4 * n;
6356                         target = start + cli_addr;
6357                         GET_BBLOCK (cfg, bblock, target);
6358
6359                         for (j = 0; j < n; ++j) {
6360                                 target = start + cli_addr + (gint32)read32 (ip);
6361                                 GET_BBLOCK (cfg, bblock, target);
6362                                 ip += 4;
6363                         }
6364                         break;
6365                 }
6366                 case MonoInlineR:
6367                 case MonoInlineI8:
6368                         ip += 9;
6369                         break;
6370                 default:
6371                         g_assert_not_reached ();
6372                 }
6373
6374                 if (i == CEE_THROW) {
6375                         unsigned char *bb_start = ip - 1;
6376
6377                         /* Find the start of the bblock containing the throw */
6378                         bblock = NULL;
6379                         while ((bb_start >= start) && !bblock) {
6380                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6381                                 bb_start --;
6382                         }
6383                         if (bblock)
6384                                 bblock->out_of_line = 1;
6385                 }
6386         }
6387         return 0;
6388 unverified:
6389 exception_exit:
6390         *pos = ip;
6391         return 1;
6392 }
6393
6394 static inline MonoMethod *
6395 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6396 {
6397         MonoMethod *method;
6398
6399         error_init (error);
6400
6401         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6402                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6403                 if (context) {
6404                         method = mono_class_inflate_generic_method_checked (method, context, error);
6405                 }
6406         } else {
6407                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6408         }
6409
6410         return method;
6411 }
6412
6413 static inline MonoMethod *
6414 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6415 {
6416         MonoError error;
6417         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6418
6419         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6420                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6421                 method = NULL;
6422         }
6423
6424         if (!method && !cfg)
6425                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6426
6427         return method;
6428 }
6429
6430 static inline MonoMethodSignature*
6431 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6432 {
6433         MonoMethodSignature *fsig;
6434
6435         error_init (error);
6436         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6437                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6438         } else {
6439                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6440                 return_val_if_nok (error, NULL);
6441         }
6442         if (context) {
6443                 fsig = mono_inflate_generic_signature(fsig, context, error);
6444         }
6445         return fsig;
6446 }
6447
6448 static MonoMethod*
6449 throw_exception (void)
6450 {
6451         static MonoMethod *method = NULL;
6452
6453         if (!method) {
6454                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6455                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6456         }
6457         g_assert (method);
6458         return method;
6459 }
6460
6461 static void
6462 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6463 {
6464         MonoMethod *thrower = throw_exception ();
6465         MonoInst *args [1];
6466
6467         EMIT_NEW_PCONST (cfg, args [0], ex);
6468         mono_emit_method_call (cfg, thrower, args, NULL);
6469 }
6470
6471 /*
6472  * Return the original method is a wrapper is specified. We can only access
6473  * the custom attributes from the original method.
6474  */
6475 static MonoMethod*
6476 get_original_method (MonoMethod *method)
6477 {
6478         if (method->wrapper_type == MONO_WRAPPER_NONE)
6479                 return method;
6480
6481         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6482         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6483                 return NULL;
6484
6485         /* in other cases we need to find the original method */
6486         return mono_marshal_method_from_wrapper (method);
6487 }
6488
6489 static void
6490 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6491 {
6492         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6493         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6494         if (ex)
6495                 emit_throw_exception (cfg, ex);
6496 }
6497
6498 static void
6499 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6500 {
6501         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6502         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6503         if (ex)
6504                 emit_throw_exception (cfg, ex);
6505 }
6506
6507 /*
6508  * Check that the IL instructions at ip are the array initialization
6509  * sequence and return the pointer to the data and the size.
6510  */
6511 static const char*
6512 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6513 {
6514         /*
6515          * newarr[System.Int32]
6516          * dup
6517          * ldtoken field valuetype ...
6518          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6519          */
6520         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6521                 MonoError error;
6522                 guint32 token = read32 (ip + 7);
6523                 guint32 field_token = read32 (ip + 2);
6524                 guint32 field_index = field_token & 0xffffff;
6525                 guint32 rva;
6526                 const char *data_ptr;
6527                 int size = 0;
6528                 MonoMethod *cmethod;
6529                 MonoClass *dummy_class;
6530                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6531                 int dummy_align;
6532
6533                 if (!field) {
6534                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6535                         return NULL;
6536                 }
6537
6538                 *out_field_token = field_token;
6539
6540                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6541                 if (!cmethod)
6542                         return NULL;
6543                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6544                         return NULL;
6545                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6546                 case MONO_TYPE_I1:
6547                 case MONO_TYPE_U1:
6548                         size = 1; break;
6549                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6550 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6551                 case MONO_TYPE_I2:
6552                 case MONO_TYPE_U2:
6553                         size = 2; break;
6554                 case MONO_TYPE_I4:
6555                 case MONO_TYPE_U4:
6556                 case MONO_TYPE_R4:
6557                         size = 4; break;
6558                 case MONO_TYPE_R8:
6559                 case MONO_TYPE_I8:
6560                 case MONO_TYPE_U8:
6561                         size = 8; break;
6562 #endif
6563                 default:
6564                         return NULL;
6565                 }
6566                 size *= len;
6567                 if (size > mono_type_size (field->type, &dummy_align))
6568                     return NULL;
6569                 *out_size = size;
6570                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6571                 if (!image_is_dynamic (method->klass->image)) {
6572                         field_index = read32 (ip + 2) & 0xffffff;
6573                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6574                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6575                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6576                         /* for aot code we do the lookup on load */
6577                         if (aot && data_ptr)
6578                                 return (const char *)GUINT_TO_POINTER (rva);
6579                 } else {
6580                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6581                         g_assert (!aot);
6582                         data_ptr = mono_field_get_data (field);
6583                 }
6584                 return data_ptr;
6585         }
6586         return NULL;
6587 }
6588
6589 static void
6590 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6591 {
6592         MonoError error;
6593         char *method_fname = mono_method_full_name (method, TRUE);
6594         char *method_code;
6595         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6596
6597         if (!header) {
6598                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6599                 mono_error_cleanup (&error);
6600         } else if (header->code_size == 0)
6601                 method_code = g_strdup ("method body is empty.");
6602         else
6603                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6604         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6605         g_free (method_fname);
6606         g_free (method_code);
6607         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6608 }
6609
6610 static void
6611 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6612 {
6613         MonoInst *ins;
6614         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6615         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6616                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6617                 /* Optimize reg-reg moves away */
6618                 /*
6619                  * Can't optimize other opcodes, since sp[0] might point to
6620                  * the last ins of a decomposed opcode.
6621                  */
6622                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6623         } else {
6624                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6625         }
6626 }
6627
6628 /*
6629  * ldloca inhibits many optimizations so try to get rid of it in common
6630  * cases.
6631  */
6632 static inline unsigned char *
6633 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6634 {
6635         int local, token;
6636         MonoClass *klass;
6637         MonoType *type;
6638
6639         if (size == 1) {
6640                 local = ip [1];
6641                 ip += 2;
6642         } else {
6643                 local = read16 (ip + 2);
6644                 ip += 4;
6645         }
6646
6647         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6648                 /* From the INITOBJ case */
6649                 token = read32 (ip + 2);
6650                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6651                 CHECK_TYPELOAD (klass);
6652                 type = mini_get_underlying_type (&klass->byval_arg);
6653                 emit_init_local (cfg, local, type, TRUE);
6654                 return ip + 6;
6655         }
6656  exception_exit:
6657         return NULL;
6658 }
6659
6660 static MonoInst*
6661 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6662 {
6663         MonoInst *icall_args [16];
6664         MonoInst *call_target, *ins, *vtable_ins;
6665         int arg_reg, this_reg, vtable_reg;
6666         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6667         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6668         gboolean variant_iface = FALSE;
6669         guint32 slot;
6670         int offset;
6671         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6672
6673         /*
6674          * In llvm-only mode, vtables contain function descriptors instead of
6675          * method addresses/trampolines.
6676          */
6677         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6678
6679         if (is_iface)
6680                 slot = mono_method_get_imt_slot (cmethod);
6681         else
6682                 slot = mono_method_get_vtable_index (cmethod);
6683
6684         this_reg = sp [0]->dreg;
6685
6686         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6687                 variant_iface = TRUE;
6688
6689         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6690                 /*
6691                  * The simplest case, a normal virtual call.
6692                  */
6693                 int slot_reg = alloc_preg (cfg);
6694                 int addr_reg = alloc_preg (cfg);
6695                 int arg_reg = alloc_preg (cfg);
6696                 MonoBasicBlock *non_null_bb;
6697
6698                 vtable_reg = alloc_preg (cfg);
6699                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6700                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6701
6702                 /* Load the vtable slot, which contains a function descriptor. */
6703                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6704
6705                 NEW_BBLOCK (cfg, non_null_bb);
6706
6707                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6708                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6709                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6710
6711                 /* Slow path */
6712                 // FIXME: Make the wrapper use the preserveall cconv
6713                 // FIXME: Use one icall per slot for small slot numbers ?
6714                 icall_args [0] = vtable_ins;
6715                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6716                 /* Make the icall return the vtable slot value to save some code space */
6717                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6718                 ins->dreg = slot_reg;
6719                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6720
6721                 /* Fastpath */
6722                 MONO_START_BB (cfg, non_null_bb);
6723                 /* Load the address + arg from the vtable slot */
6724                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6725                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6726
6727                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6728         }
6729
6730         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6731                 /*
6732                  * A simple interface call
6733                  *
6734                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6735                  * The imt slot contains a function descriptor for a runtime function + arg.
6736                  */
6737                 int slot_reg = alloc_preg (cfg);
6738                 int addr_reg = alloc_preg (cfg);
6739                 int arg_reg = alloc_preg (cfg);
6740                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6741
6742                 vtable_reg = alloc_preg (cfg);
6743                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6744                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6745
6746                 /*
6747                  * The slot is already initialized when the vtable is created so there is no need
6748                  * to check it here.
6749                  */
6750
6751                 /* Load the imt slot, which contains a function descriptor. */
6752                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6753
6754                 /* Load the address + arg of the imt thunk from the imt slot */
6755                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6756                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6757                 /*
6758                  * IMT thunks in llvm-only mode are C functions which take an info argument
6759                  * plus the imt method and return the ftndesc to call.
6760                  */
6761                 icall_args [0] = thunk_arg_ins;
6762                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6763                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6764                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6765
6766                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6767         }
6768
6769         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6770                 /*
6771                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6772                  * dynamically extended as more instantiations are discovered.
6773                  * This handles generic virtual methods both on classes and interfaces.
6774                  */
6775                 int slot_reg = alloc_preg (cfg);
6776                 int addr_reg = alloc_preg (cfg);
6777                 int arg_reg = alloc_preg (cfg);
6778                 int ftndesc_reg = alloc_preg (cfg);
6779                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6780                 MonoBasicBlock *slowpath_bb, *end_bb;
6781
6782                 NEW_BBLOCK (cfg, slowpath_bb);
6783                 NEW_BBLOCK (cfg, end_bb);
6784
6785                 vtable_reg = alloc_preg (cfg);
6786                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6787                 if (is_iface)
6788                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6789                 else
6790                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6791
6792                 /* Load the slot, which contains a function descriptor. */
6793                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6794
6795                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6796                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6797                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6798                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6799
6800                 /* Fastpath */
6801                 /* Same as with iface calls */
6802                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6803                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6804                 icall_args [0] = thunk_arg_ins;
6805                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6806                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6807                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6808                 ftndesc_ins->dreg = ftndesc_reg;
6809                 /*
6810                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6811                  * they don't know about yet. Fall back to the slowpath in that case.
6812                  */
6813                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6814                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6815
6816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6817
6818                 /* Slowpath */
6819                 MONO_START_BB (cfg, slowpath_bb);
6820                 icall_args [0] = vtable_ins;
6821                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6822                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6823                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6824                 if (is_iface)
6825                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6826                 else
6827                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6828                 ftndesc_ins->dreg = ftndesc_reg;
6829                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6830
6831                 /* Common case */
6832                 MONO_START_BB (cfg, end_bb);
6833                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6834         }
6835
6836         /*
6837          * Non-optimized cases
6838          */
6839         icall_args [0] = sp [0];
6840         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6841
6842         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6843                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6844
6845         arg_reg = alloc_preg (cfg);
6846         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6847         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6848
6849         g_assert (is_gsharedvt);
6850         if (is_iface)
6851                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6852         else
6853                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6854
6855         /*
6856          * Pass the extra argument even if the callee doesn't receive it, most
6857          * calling conventions allow this.
6858          */
6859         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6860 }
6861
6862 static gboolean
6863 is_exception_class (MonoClass *klass)
6864 {
6865         while (klass) {
6866                 if (klass == mono_defaults.exception_class)
6867                         return TRUE;
6868                 klass = klass->parent;
6869         }
6870         return FALSE;
6871 }
6872
6873 /*
6874  * is_jit_optimizer_disabled:
6875  *
6876  *   Determine whenever M's assembly has a DebuggableAttribute with the
6877  * IsJITOptimizerDisabled flag set.
6878  */
6879 static gboolean
6880 is_jit_optimizer_disabled (MonoMethod *m)
6881 {
6882         MonoError error;
6883         MonoAssembly *ass = m->klass->image->assembly;
6884         MonoCustomAttrInfo* attrs;
6885         MonoClass *klass;
6886         int i;
6887         gboolean val = FALSE;
6888
6889         g_assert (ass);
6890         if (ass->jit_optimizer_disabled_inited)
6891                 return ass->jit_optimizer_disabled;
6892
6893         klass = mono_class_try_get_debuggable_attribute_class ();
6894
6895         if (!klass) {
6896                 /* Linked away */
6897                 ass->jit_optimizer_disabled = FALSE;
6898                 mono_memory_barrier ();
6899                 ass->jit_optimizer_disabled_inited = TRUE;
6900                 return FALSE;
6901         }
6902
6903         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6904         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6905         if (attrs) {
6906                 for (i = 0; i < attrs->num_attrs; ++i) {
6907                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6908                         const gchar *p;
6909                         MonoMethodSignature *sig;
6910
6911                         if (!attr->ctor || attr->ctor->klass != klass)
6912                                 continue;
6913                         /* Decode the attribute. See reflection.c */
6914                         p = (const char*)attr->data;
6915                         g_assert (read16 (p) == 0x0001);
6916                         p += 2;
6917
6918                         // FIXME: Support named parameters
6919                         sig = mono_method_signature (attr->ctor);
6920                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6921                                 continue;
6922                         /* Two boolean arguments */
6923                         p ++;
6924                         val = *p;
6925                 }
6926                 mono_custom_attrs_free (attrs);
6927         }
6928
6929         ass->jit_optimizer_disabled = val;
6930         mono_memory_barrier ();
6931         ass->jit_optimizer_disabled_inited = TRUE;
6932
6933         return val;
6934 }
6935
6936 static gboolean
6937 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
6938 {
6939         gboolean supported_tail_call;
6940         int i;
6941
6942         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
6943
6944         for (i = 0; i < fsig->param_count; ++i) {
6945                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6946                         /* These can point to the current method's stack */
6947                         supported_tail_call = FALSE;
6948         }
6949         if (fsig->hasthis && cmethod->klass->valuetype)
6950                 /* this might point to the current method's stack */
6951                 supported_tail_call = FALSE;
6952         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6953                 supported_tail_call = FALSE;
6954         if (cfg->method->save_lmf)
6955                 supported_tail_call = FALSE;
6956         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6957                 supported_tail_call = FALSE;
6958         if (call_opcode != CEE_CALL)
6959                 supported_tail_call = FALSE;
6960
6961         /* Debugging support */
6962 #if 0
6963         if (supported_tail_call) {
6964                 if (!mono_debug_count ())
6965                         supported_tail_call = FALSE;
6966         }
6967 #endif
6968
6969         return supported_tail_call;
6970 }
6971
6972 /*
6973  * handle_ctor_call:
6974  *
6975  *   Handle calls made to ctors from NEWOBJ opcodes.
6976  */
6977 static void
6978 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
6979                                   MonoInst **sp, guint8 *ip, int *inline_costs)
6980 {
6981         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
6982
6983         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
6984                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
6985                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
6986                         mono_class_vtable (cfg->domain, cmethod->klass);
6987                         CHECK_TYPELOAD (cmethod->klass);
6988
6989                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
6990                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
6991                 } else {
6992                         if (context_used) {
6993                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
6994                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
6995                         } else {
6996                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
6997
6998                                 CHECK_TYPELOAD (cmethod->klass);
6999                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7000                         }
7001                 }
7002         }
7003
7004         /* Avoid virtual calls to ctors if possible */
7005         if (mono_class_is_marshalbyref (cmethod->klass))
7006                 callvirt_this_arg = sp [0];
7007
7008         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7009                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7010                 CHECK_CFG_EXCEPTION;
7011         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7012                            mono_method_check_inlining (cfg, cmethod) &&
7013                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7014                 int costs;
7015
7016                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7017                         cfg->real_offset += 5;
7018
7019                         *inline_costs += costs - 5;
7020                 } else {
7021                         INLINE_FAILURE ("inline failure");
7022                         // FIXME-VT: Clean this up
7023                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7024                                 GSHAREDVT_FAILURE(*ip);
7025                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7026                 }
7027         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7028                 MonoInst *addr;
7029
7030                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7031
7032                 if (cfg->llvm_only) {
7033                         // FIXME: Avoid initializing vtable_arg
7034                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7035                 } else {
7036                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7037                 }
7038         } else if (context_used &&
7039                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7040                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7041                 MonoInst *cmethod_addr;
7042
7043                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7044
7045                 if (cfg->llvm_only) {
7046                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7047                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7048                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7049                 } else {
7050                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7051                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7052
7053                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7054                 }
7055         } else {
7056                 INLINE_FAILURE ("ctor call");
7057                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7058                                                                                   callvirt_this_arg, NULL, vtable_arg);
7059         }
7060  exception_exit:
7061         return;
7062 }
7063
7064 static void
7065 emit_setret (MonoCompile *cfg, MonoInst *val)
7066 {
7067         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7068         MonoInst *ins;
7069
7070         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7071                 MonoInst *ret_addr;
7072
7073                 if (!cfg->vret_addr) {
7074                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7075                 } else {
7076                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7077
7078                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7079                         ins->klass = mono_class_from_mono_type (ret_type);
7080                 }
7081         } else {
7082 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7083                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7084                         MonoInst *iargs [1];
7085                         MonoInst *conv;
7086
7087                         iargs [0] = val;
7088                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7089                         mono_arch_emit_setret (cfg, cfg->method, conv);
7090                 } else {
7091                         mono_arch_emit_setret (cfg, cfg->method, val);
7092                 }
7093 #else
7094                 mono_arch_emit_setret (cfg, cfg->method, val);
7095 #endif
7096         }
7097 }
7098
7099 /*
7100  * mono_method_to_ir:
7101  *
7102  * Translate the .net IL into linear IR.
7103  *
7104  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7105  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7106  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7107  * @inline_args: if not NULL, contains the arguments to the inline call
7108  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7109  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7110  *
7111  * This method is used to turn ECMA IL into Mono's internal Linear IR
7112  * reprensetation.  It is used both for entire methods, as well as
7113  * inlining existing methods.  In the former case, the @start_bblock,
7114  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7115  * inline_offset is set to zero.
7116  *
7117  * Returns: the inline cost, or -1 if there was an error processing this method.
7118  */
7119 int
7120 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7121                    MonoInst *return_var, MonoInst **inline_args,
7122                    guint inline_offset, gboolean is_virtual_call)
7123 {
7124         MonoError error;
7125         MonoInst *ins, **sp, **stack_start;
7126         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7127         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7128         MonoMethod *cmethod, *method_definition;
7129         MonoInst **arg_array;
7130         MonoMethodHeader *header;
7131         MonoImage *image;
7132         guint32 token, ins_flag;
7133         MonoClass *klass;
7134         MonoClass *constrained_class = NULL;
7135         unsigned char *ip, *end, *target, *err_pos;
7136         MonoMethodSignature *sig;
7137         MonoGenericContext *generic_context = NULL;
7138         MonoGenericContainer *generic_container = NULL;
7139         MonoType **param_types;
7140         int i, n, start_new_bblock, dreg;
7141         int num_calls = 0, inline_costs = 0;
7142         int breakpoint_id = 0;
7143         guint num_args;
7144         GSList *class_inits = NULL;
7145         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7146         int context_used;
7147         gboolean init_locals, seq_points, skip_dead_blocks;
7148         gboolean sym_seq_points = FALSE;
7149         MonoDebugMethodInfo *minfo;
7150         MonoBitSet *seq_point_locs = NULL;
7151         MonoBitSet *seq_point_set_locs = NULL;
7152
7153         cfg->disable_inline = is_jit_optimizer_disabled (method);
7154
7155         /* serialization and xdomain stuff may need access to private fields and methods */
7156         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7157         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7158         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7159         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7160         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7161         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7162
7163         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7164         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7165         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7166         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7167         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7168
7169         image = method->klass->image;
7170         header = mono_method_get_header_checked (method, &cfg->error);
7171         if (!header) {
7172                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7173                 goto exception_exit;
7174         } else {
7175                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7176         }
7177
7178         generic_container = mono_method_get_generic_container (method);
7179         sig = mono_method_signature (method);
7180         num_args = sig->hasthis + sig->param_count;
7181         ip = (unsigned char*)header->code;
7182         cfg->cil_start = ip;
7183         end = ip + header->code_size;
7184         cfg->stat_cil_code_size += header->code_size;
7185
7186         seq_points = cfg->gen_seq_points && cfg->method == method;
7187
7188         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7189                 /* We could hit a seq point before attaching to the JIT (#8338) */
7190                 seq_points = FALSE;
7191         }
7192
7193         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7194                 minfo = mono_debug_lookup_method (method);
7195                 if (minfo) {
7196                         MonoSymSeqPoint *sps;
7197                         int i, n_il_offsets;
7198
7199                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7200                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7201                         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);
7202                         sym_seq_points = TRUE;
7203                         for (i = 0; i < n_il_offsets; ++i) {
7204                                 if (sps [i].il_offset < header->code_size)
7205                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7206                         }
7207                         g_free (sps);
7208
7209                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7210                         if (asyncMethod) {
7211                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7212                                 {
7213                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7214                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7215                                 }
7216                                 mono_debug_free_method_async_debug_info (asyncMethod);
7217                         }
7218                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7219                         /* Methods without line number info like auto-generated property accessors */
7220                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7221                         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);
7222                         sym_seq_points = TRUE;
7223                 }
7224         }
7225
7226         /*
7227          * Methods without init_locals set could cause asserts in various passes
7228          * (#497220). To work around this, we emit dummy initialization opcodes
7229          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7230          * on some platforms.
7231          */
7232         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7233                 init_locals = header->init_locals;
7234         else
7235                 init_locals = TRUE;
7236
7237         method_definition = method;
7238         while (method_definition->is_inflated) {
7239                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7240                 method_definition = imethod->declaring;
7241         }
7242
7243         /* SkipVerification is not allowed if core-clr is enabled */
7244         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7245                 dont_verify = TRUE;
7246                 dont_verify_stloc = TRUE;
7247         }
7248
7249         if (sig->is_inflated)
7250                 generic_context = mono_method_get_context (method);
7251         else if (generic_container)
7252                 generic_context = &generic_container->context;
7253         cfg->generic_context = generic_context;
7254
7255         if (!cfg->gshared)
7256                 g_assert (!sig->has_type_parameters);
7257
7258         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7259                 g_assert (method->is_inflated);
7260                 g_assert (mono_method_get_context (method)->method_inst);
7261         }
7262         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7263                 g_assert (sig->generic_param_count);
7264
7265         if (cfg->method == method) {
7266                 cfg->real_offset = 0;
7267         } else {
7268                 cfg->real_offset = inline_offset;
7269         }
7270
7271         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7272         cfg->cil_offset_to_bb_len = header->code_size;
7273
7274         cfg->current_method = method;
7275
7276         if (cfg->verbose_level > 2)
7277                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7278
7279         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7280         if (sig->hasthis)
7281                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7282         for (n = 0; n < sig->param_count; ++n)
7283                 param_types [n + sig->hasthis] = sig->params [n];
7284         cfg->arg_types = param_types;
7285
7286         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7287         if (cfg->method == method) {
7288
7289                 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7290
7291                 /* ENTRY BLOCK */
7292                 NEW_BBLOCK (cfg, start_bblock);
7293                 cfg->bb_entry = start_bblock;
7294                 start_bblock->cil_code = NULL;
7295                 start_bblock->cil_length = 0;
7296
7297                 /* EXIT BLOCK */
7298                 NEW_BBLOCK (cfg, end_bblock);
7299                 cfg->bb_exit = end_bblock;
7300                 end_bblock->cil_code = NULL;
7301                 end_bblock->cil_length = 0;
7302                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7303                 g_assert (cfg->num_bblocks == 2);
7304
7305                 arg_array = cfg->args;
7306
7307                 if (header->num_clauses) {
7308                         cfg->spvars = g_hash_table_new (NULL, NULL);
7309                         cfg->exvars = g_hash_table_new (NULL, NULL);
7310                 }
7311                 /* handle exception clauses */
7312                 for (i = 0; i < header->num_clauses; ++i) {
7313                         MonoBasicBlock *try_bb;
7314                         MonoExceptionClause *clause = &header->clauses [i];
7315                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7316
7317                         try_bb->real_offset = clause->try_offset;
7318                         try_bb->try_start = TRUE;
7319                         try_bb->region = ((i + 1) << 8) | clause->flags;
7320                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7321                         tblock->real_offset = clause->handler_offset;
7322                         tblock->flags |= BB_EXCEPTION_HANDLER;
7323
7324                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
7325                                 mono_create_exvar_for_offset (cfg, clause->handler_offset);
7326                         /*
7327                          * Linking the try block with the EH block hinders inlining as we won't be able to
7328                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7329                          */
7330                         if (COMPILE_LLVM (cfg))
7331                                 link_bblock (cfg, try_bb, tblock);
7332
7333                         if (*(ip + clause->handler_offset) == CEE_POP)
7334                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7335
7336                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7337                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7338                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7339                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7340                                 MONO_ADD_INS (tblock, ins);
7341
7342                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7343                                         /* finally clauses already have a seq point */
7344                                         /* seq points for filter clauses are emitted below */
7345                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7346                                         MONO_ADD_INS (tblock, ins);
7347                                 }
7348
7349                                 /* todo: is a fault block unsafe to optimize? */
7350                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7351                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7352                         }
7353
7354                         /*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);
7355                           while (p < end) {
7356                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7357                           }*/
7358                         /* catch and filter blocks get the exception object on the stack */
7359                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7360                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7361
7362                                 /* mostly like handle_stack_args (), but just sets the input args */
7363                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7364                                 tblock->in_scount = 1;
7365                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7366                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7367
7368                                 cfg->cbb = tblock;
7369
7370 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7371                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7372                                 if (!cfg->compile_llvm) {
7373                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7374                                         ins->dreg = tblock->in_stack [0]->dreg;
7375                                         MONO_ADD_INS (tblock, ins);
7376                                 }
7377 #else
7378                                 MonoInst *dummy_use;
7379
7380                                 /*
7381                                  * Add a dummy use for the exvar so its liveness info will be
7382                                  * correct.
7383                                  */
7384                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7385 #endif
7386
7387                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7388                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7389                                         MONO_ADD_INS (tblock, ins);
7390                                 }
7391
7392                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7393                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7394                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7395                                         tblock->real_offset = clause->data.filter_offset;
7396                                         tblock->in_scount = 1;
7397                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7398                                         /* The filter block shares the exvar with the handler block */
7399                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7400                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7401                                         MONO_ADD_INS (tblock, ins);
7402                                 }
7403                         }
7404
7405                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7406                                         clause->data.catch_class &&
7407                                         cfg->gshared &&
7408                                         mono_class_check_context_used (clause->data.catch_class)) {
7409                                 /*
7410                                  * In shared generic code with catch
7411                                  * clauses containing type variables
7412                                  * the exception handling code has to
7413                                  * be able to get to the rgctx.
7414                                  * Therefore we have to make sure that
7415                                  * the vtable/mrgctx argument (for
7416                                  * static or generic methods) or the
7417                                  * "this" argument (for non-static
7418                                  * methods) are live.
7419                                  */
7420                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7421                                                 mini_method_get_context (method)->method_inst ||
7422                                                 method->klass->valuetype) {
7423                                         mono_get_vtable_var (cfg);
7424                                 } else {
7425                                         MonoInst *dummy_use;
7426
7427                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7428                                 }
7429                         }
7430                 }
7431         } else {
7432                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7433                 cfg->cbb = start_bblock;
7434                 cfg->args = arg_array;
7435                 mono_save_args (cfg, sig, inline_args);
7436         }
7437
7438         /* FIRST CODE BLOCK */
7439         NEW_BBLOCK (cfg, tblock);
7440         tblock->cil_code = ip;
7441         cfg->cbb = tblock;
7442         cfg->ip = ip;
7443
7444         ADD_BBLOCK (cfg, tblock);
7445
7446         if (cfg->method == method) {
7447                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7448                 if (breakpoint_id) {
7449                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7450                         MONO_ADD_INS (cfg->cbb, ins);
7451                 }
7452         }
7453
7454         /* we use a separate basic block for the initialization code */
7455         NEW_BBLOCK (cfg, init_localsbb);
7456         if (cfg->method == method)
7457                 cfg->bb_init = init_localsbb;
7458         init_localsbb->real_offset = cfg->real_offset;
7459         start_bblock->next_bb = init_localsbb;
7460         init_localsbb->next_bb = cfg->cbb;
7461         link_bblock (cfg, start_bblock, init_localsbb);
7462         link_bblock (cfg, init_localsbb, cfg->cbb);
7463
7464         cfg->cbb = init_localsbb;
7465
7466         if (cfg->gsharedvt && cfg->method == method) {
7467                 MonoGSharedVtMethodInfo *info;
7468                 MonoInst *var, *locals_var;
7469                 int dreg;
7470
7471                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7472                 info->method = cfg->method;
7473                 info->count_entries = 16;
7474                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7475                 cfg->gsharedvt_info = info;
7476
7477                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7478                 /* prevent it from being register allocated */
7479                 //var->flags |= MONO_INST_VOLATILE;
7480                 cfg->gsharedvt_info_var = var;
7481
7482                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7483                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7484
7485                 /* Allocate locals */
7486                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7487                 /* prevent it from being register allocated */
7488                 //locals_var->flags |= MONO_INST_VOLATILE;
7489                 cfg->gsharedvt_locals_var = locals_var;
7490
7491                 dreg = alloc_ireg (cfg);
7492                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7493
7494                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7495                 ins->dreg = locals_var->dreg;
7496                 ins->sreg1 = dreg;
7497                 MONO_ADD_INS (cfg->cbb, ins);
7498                 cfg->gsharedvt_locals_var_ins = ins;
7499
7500                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7501                 /*
7502                 if (init_locals)
7503                         ins->flags |= MONO_INST_INIT;
7504                 */
7505         }
7506
7507         if (mono_security_core_clr_enabled ()) {
7508                 /* check if this is native code, e.g. an icall or a p/invoke */
7509                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7510                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7511                         if (wrapped) {
7512                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7513                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7514
7515                                 /* if this ia a native call then it can only be JITted from platform code */
7516                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7517                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7518                                                 MonoException *ex = icall ? mono_get_exception_security () :
7519                                                         mono_get_exception_method_access ();
7520                                                 emit_throw_exception (cfg, ex);
7521                                         }
7522                                 }
7523                         }
7524                 }
7525         }
7526
7527         CHECK_CFG_EXCEPTION;
7528
7529         if (header->code_size == 0)
7530                 UNVERIFIED;
7531
7532         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7533                 ip = err_pos;
7534                 UNVERIFIED;
7535         }
7536
7537         if (cfg->method == method)
7538                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7539
7540         for (n = 0; n < header->num_locals; ++n) {
7541                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7542                         UNVERIFIED;
7543         }
7544         class_inits = NULL;
7545
7546         /* We force the vtable variable here for all shared methods
7547            for the possibility that they might show up in a stack
7548            trace where their exact instantiation is needed. */
7549         if (cfg->gshared && method == cfg->method) {
7550                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7551                                 mini_method_get_context (method)->method_inst ||
7552                                 method->klass->valuetype) {
7553                         mono_get_vtable_var (cfg);
7554                 } else {
7555                         /* FIXME: Is there a better way to do this?
7556                            We need the variable live for the duration
7557                            of the whole method. */
7558                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7559                 }
7560         }
7561
7562         /* add a check for this != NULL to inlined methods */
7563         if (is_virtual_call) {
7564                 MonoInst *arg_ins;
7565
7566                 NEW_ARGLOAD (cfg, arg_ins, 0);
7567                 MONO_ADD_INS (cfg->cbb, arg_ins);
7568                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7569         }
7570
7571         skip_dead_blocks = !dont_verify;
7572         if (skip_dead_blocks) {
7573                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7574                 CHECK_CFG_ERROR;
7575                 g_assert (bb);
7576         }
7577
7578         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7579         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7580
7581         ins_flag = 0;
7582         start_new_bblock = 0;
7583         while (ip < end) {
7584                 if (cfg->method == method)
7585                         cfg->real_offset = ip - header->code;
7586                 else
7587                         cfg->real_offset = inline_offset;
7588                 cfg->ip = ip;
7589
7590                 context_used = 0;
7591
7592                 if (start_new_bblock) {
7593                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7594                         if (start_new_bblock == 2) {
7595                                 g_assert (ip == tblock->cil_code);
7596                         } else {
7597                                 GET_BBLOCK (cfg, tblock, ip);
7598                         }
7599                         cfg->cbb->next_bb = tblock;
7600                         cfg->cbb = tblock;
7601                         start_new_bblock = 0;
7602                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7603                                 if (cfg->verbose_level > 3)
7604                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7605                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7606                                 *sp++ = ins;
7607                         }
7608                         if (class_inits)
7609                                 g_slist_free (class_inits);
7610                         class_inits = NULL;
7611                 } else {
7612                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7613                                 link_bblock (cfg, cfg->cbb, tblock);
7614                                 if (sp != stack_start) {
7615                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7616                                         sp = stack_start;
7617                                         CHECK_UNVERIFIABLE (cfg);
7618                                 }
7619                                 cfg->cbb->next_bb = tblock;
7620                                 cfg->cbb = tblock;
7621                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7622                                         if (cfg->verbose_level > 3)
7623                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7624                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7625                                         *sp++ = ins;
7626                                 }
7627                                 g_slist_free (class_inits);
7628                                 class_inits = NULL;
7629                         }
7630                 }
7631
7632                 if (skip_dead_blocks) {
7633                         int ip_offset = ip - header->code;
7634
7635                         if (ip_offset == bb->end)
7636                                 bb = bb->next;
7637
7638                         if (bb->dead) {
7639                                 int op_size = mono_opcode_size (ip, end);
7640                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7641
7642                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7643
7644                                 if (ip_offset + op_size == bb->end) {
7645                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7646                                         MONO_ADD_INS (cfg->cbb, ins);
7647                                         start_new_bblock = 1;
7648                                 }
7649
7650                                 ip += op_size;
7651                                 continue;
7652                         }
7653                 }
7654                 /*
7655                  * Sequence points are points where the debugger can place a breakpoint.
7656                  * Currently, we generate these automatically at points where the IL
7657                  * stack is empty.
7658                  */
7659                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7660                         /*
7661                          * Make methods interruptable at the beginning, and at the targets of
7662                          * backward branches.
7663                          * Also, do this at the start of every bblock in methods with clauses too,
7664                          * to be able to handle instructions with inprecise control flow like
7665                          * throw/endfinally.
7666                          * Backward branches are handled at the end of method-to-ir ().
7667                          */
7668                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7669                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7670
7671                         /* Avoid sequence points on empty IL like .volatile */
7672                         // FIXME: Enable this
7673                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7674                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7675                         if ((sp != stack_start) && !sym_seq_point)
7676                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7677                         MONO_ADD_INS (cfg->cbb, ins);
7678
7679                         if (sym_seq_points)
7680                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7681                 }
7682
7683                 cfg->cbb->real_offset = cfg->real_offset;
7684
7685                 if ((cfg->method == method) && cfg->coverage_info) {
7686                         guint32 cil_offset = ip - header->code;
7687                         gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7688                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7689
7690                         if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7691                                 MonoInst *one_ins, *load_ins;
7692
7693                                 EMIT_NEW_PCONST (cfg, load_ins, counter);
7694                                 EMIT_NEW_ICONST (cfg, one_ins, 1);
7695                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7696                                 ins->dreg = mono_alloc_ireg (cfg);
7697                                 ins->inst_basereg = load_ins->dreg;
7698                                 ins->inst_offset = 0;
7699                                 ins->sreg2 = one_ins->dreg;
7700                                 ins->type = STACK_I4;
7701                                 MONO_ADD_INS (cfg->cbb, ins);
7702                         } else {
7703                                 EMIT_NEW_PCONST (cfg, ins, counter);
7704                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7705                         }
7706                 }
7707
7708                 if (cfg->verbose_level > 3)
7709                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7710
7711                 switch (*ip) {
7712                 case CEE_NOP:
7713                         if (seq_points && !sym_seq_points && sp != stack_start) {
7714                                 /*
7715                                  * The C# compiler uses these nops to notify the JIT that it should
7716                                  * insert seq points.
7717                                  */
7718                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7719                                 MONO_ADD_INS (cfg->cbb, ins);
7720                         }
7721                         if (cfg->keep_cil_nops)
7722                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7723                         else
7724                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7725                         ip++;
7726                         MONO_ADD_INS (cfg->cbb, ins);
7727                         break;
7728                 case CEE_BREAK:
7729                         if (mini_should_insert_breakpoint (cfg->method)) {
7730                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7731                         } else {
7732                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7733                         }
7734                         ip++;
7735                         MONO_ADD_INS (cfg->cbb, ins);
7736                         break;
7737                 case CEE_LDARG_0:
7738                 case CEE_LDARG_1:
7739                 case CEE_LDARG_2:
7740                 case CEE_LDARG_3:
7741                         CHECK_STACK_OVF (1);
7742                         n = (*ip)-CEE_LDARG_0;
7743                         CHECK_ARG (n);
7744                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7745                         ip++;
7746                         *sp++ = ins;
7747                         break;
7748                 case CEE_LDLOC_0:
7749                 case CEE_LDLOC_1:
7750                 case CEE_LDLOC_2:
7751                 case CEE_LDLOC_3:
7752                         CHECK_STACK_OVF (1);
7753                         n = (*ip)-CEE_LDLOC_0;
7754                         CHECK_LOCAL (n);
7755                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7756                         ip++;
7757                         *sp++ = ins;
7758                         break;
7759                 case CEE_STLOC_0:
7760                 case CEE_STLOC_1:
7761                 case CEE_STLOC_2:
7762                 case CEE_STLOC_3: {
7763                         CHECK_STACK (1);
7764                         n = (*ip)-CEE_STLOC_0;
7765                         CHECK_LOCAL (n);
7766                         --sp;
7767                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7768                                 UNVERIFIED;
7769                         emit_stloc_ir (cfg, sp, header, n);
7770                         ++ip;
7771                         inline_costs += 1;
7772                         break;
7773                         }
7774                 case CEE_LDARG_S:
7775                         CHECK_OPSIZE (2);
7776                         CHECK_STACK_OVF (1);
7777                         n = ip [1];
7778                         CHECK_ARG (n);
7779                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7780                         *sp++ = ins;
7781                         ip += 2;
7782                         break;
7783                 case CEE_LDARGA_S:
7784                         CHECK_OPSIZE (2);
7785                         CHECK_STACK_OVF (1);
7786                         n = ip [1];
7787                         CHECK_ARG (n);
7788                         NEW_ARGLOADA (cfg, ins, n);
7789                         MONO_ADD_INS (cfg->cbb, ins);
7790                         *sp++ = ins;
7791                         ip += 2;
7792                         break;
7793                 case CEE_STARG_S:
7794                         CHECK_OPSIZE (2);
7795                         CHECK_STACK (1);
7796                         --sp;
7797                         n = ip [1];
7798                         CHECK_ARG (n);
7799                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7800                                 UNVERIFIED;
7801                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7802                         ip += 2;
7803                         break;
7804                 case CEE_LDLOC_S:
7805                         CHECK_OPSIZE (2);
7806                         CHECK_STACK_OVF (1);
7807                         n = ip [1];
7808                         CHECK_LOCAL (n);
7809                         if ((ip [2] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 2) && MONO_TYPE_ISSTRUCT (header->locals [n])) {
7810                                 /* Avoid loading a struct just to load one of its fields */
7811                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
7812                         } else {
7813                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
7814                         }
7815                         *sp++ = ins;
7816                         ip += 2;
7817                         break;
7818                 case CEE_LDLOCA_S: {
7819                         unsigned char *tmp_ip;
7820                         CHECK_OPSIZE (2);
7821                         CHECK_STACK_OVF (1);
7822                         CHECK_LOCAL (ip [1]);
7823
7824                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7825                                 ip = tmp_ip;
7826                                 inline_costs += 1;
7827                                 break;
7828                         }
7829
7830                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7831                         *sp++ = ins;
7832                         ip += 2;
7833                         break;
7834                 }
7835                 case CEE_STLOC_S:
7836                         CHECK_OPSIZE (2);
7837                         CHECK_STACK (1);
7838                         --sp;
7839                         CHECK_LOCAL (ip [1]);
7840                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7841                                 UNVERIFIED;
7842                         emit_stloc_ir (cfg, sp, header, ip [1]);
7843                         ip += 2;
7844                         inline_costs += 1;
7845                         break;
7846                 case CEE_LDNULL:
7847                         CHECK_STACK_OVF (1);
7848                         EMIT_NEW_PCONST (cfg, ins, NULL);
7849                         ins->type = STACK_OBJ;
7850                         ++ip;
7851                         *sp++ = ins;
7852                         break;
7853                 case CEE_LDC_I4_M1:
7854                         CHECK_STACK_OVF (1);
7855                         EMIT_NEW_ICONST (cfg, ins, -1);
7856                         ++ip;
7857                         *sp++ = ins;
7858                         break;
7859                 case CEE_LDC_I4_0:
7860                 case CEE_LDC_I4_1:
7861                 case CEE_LDC_I4_2:
7862                 case CEE_LDC_I4_3:
7863                 case CEE_LDC_I4_4:
7864                 case CEE_LDC_I4_5:
7865                 case CEE_LDC_I4_6:
7866                 case CEE_LDC_I4_7:
7867                 case CEE_LDC_I4_8:
7868                         CHECK_STACK_OVF (1);
7869                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7870                         ++ip;
7871                         *sp++ = ins;
7872                         break;
7873                 case CEE_LDC_I4_S:
7874                         CHECK_OPSIZE (2);
7875                         CHECK_STACK_OVF (1);
7876                         ++ip;
7877                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7878                         ++ip;
7879                         *sp++ = ins;
7880                         break;
7881                 case CEE_LDC_I4:
7882                         CHECK_OPSIZE (5);
7883                         CHECK_STACK_OVF (1);
7884                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7885                         ip += 5;
7886                         *sp++ = ins;
7887                         break;
7888                 case CEE_LDC_I8:
7889                         CHECK_OPSIZE (9);
7890                         CHECK_STACK_OVF (1);
7891                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7892                         ins->type = STACK_I8;
7893                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7894                         ++ip;
7895                         ins->inst_l = (gint64)read64 (ip);
7896                         MONO_ADD_INS (cfg->cbb, ins);
7897                         ip += 8;
7898                         *sp++ = ins;
7899                         break;
7900                 case CEE_LDC_R4: {
7901                         float *f;
7902                         gboolean use_aotconst = FALSE;
7903
7904 #ifdef TARGET_POWERPC
7905                         /* FIXME: Clean this up */
7906                         if (cfg->compile_aot)
7907                                 use_aotconst = TRUE;
7908 #endif
7909
7910                         /* FIXME: we should really allocate this only late in the compilation process */
7911                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7912                         CHECK_OPSIZE (5);
7913                         CHECK_STACK_OVF (1);
7914
7915                         if (use_aotconst) {
7916                                 MonoInst *cons;
7917                                 int dreg;
7918
7919                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7920
7921                                 dreg = alloc_freg (cfg);
7922                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7923                                 ins->type = cfg->r4_stack_type;
7924                         } else {
7925                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7926                                 ins->type = cfg->r4_stack_type;
7927                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7928                                 ins->inst_p0 = f;
7929                                 MONO_ADD_INS (cfg->cbb, ins);
7930                         }
7931                         ++ip;
7932                         readr4 (ip, f);
7933                         ip += 4;
7934                         *sp++ = ins;
7935                         break;
7936                 }
7937                 case CEE_LDC_R8: {
7938                         double *d;
7939                         gboolean use_aotconst = FALSE;
7940
7941 #ifdef TARGET_POWERPC
7942                         /* FIXME: Clean this up */
7943                         if (cfg->compile_aot)
7944                                 use_aotconst = TRUE;
7945 #endif
7946
7947                         /* FIXME: we should really allocate this only late in the compilation process */
7948                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
7949                         CHECK_OPSIZE (9);
7950                         CHECK_STACK_OVF (1);
7951
7952                         if (use_aotconst) {
7953                                 MonoInst *cons;
7954                                 int dreg;
7955
7956                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7957
7958                                 dreg = alloc_freg (cfg);
7959                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7960                                 ins->type = STACK_R8;
7961                         } else {
7962                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7963                                 ins->type = STACK_R8;
7964                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7965                                 ins->inst_p0 = d;
7966                                 MONO_ADD_INS (cfg->cbb, ins);
7967                         }
7968                         ++ip;
7969                         readr8 (ip, d);
7970                         ip += 8;
7971                         *sp++ = ins;
7972                         break;
7973                 }
7974                 case CEE_DUP: {
7975                         MonoInst *temp, *store;
7976                         CHECK_STACK (1);
7977                         CHECK_STACK_OVF (1);
7978                         sp--;
7979                         ins = *sp;
7980
7981                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
7982                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
7983
7984                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7985                         *sp++ = ins;
7986
7987                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7988                         *sp++ = ins;
7989
7990                         ++ip;
7991                         inline_costs += 2;
7992                         break;
7993                 }
7994                 case CEE_POP:
7995                         CHECK_STACK (1);
7996                         ip++;
7997                         --sp;
7998
7999 #ifdef TARGET_X86
8000                         if (sp [0]->type == STACK_R8)
8001                                 /* we need to pop the value from the x86 FP stack */
8002                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8003 #endif
8004                         break;
8005                 case CEE_JMP: {
8006                         MonoCallInst *call;
8007                         MonoMethodSignature *fsig;
8008                         int i, n;
8009
8010                         INLINE_FAILURE ("jmp");
8011                         GSHAREDVT_FAILURE (*ip);
8012
8013                         CHECK_OPSIZE (5);
8014                         if (stack_start != sp)
8015                                 UNVERIFIED;
8016                         token = read32 (ip + 1);
8017                         /* FIXME: check the signature matches */
8018                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8019                         CHECK_CFG_ERROR;
8020
8021                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8022                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8023
8024                         mini_profiler_emit_tail_call (cfg, cmethod);
8025
8026                         fsig = mono_method_signature (cmethod);
8027                         n = fsig->param_count + fsig->hasthis;
8028                         if (cfg->llvm_only) {
8029                                 MonoInst **args;
8030
8031                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8032                                 for (i = 0; i < n; ++i)
8033                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8034                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8035                                 /*
8036                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8037                                  * have to emit a normal return since llvm expects it.
8038                                  */
8039                                 if (cfg->ret)
8040                                         emit_setret (cfg, ins);
8041                                 MONO_INST_NEW (cfg, ins, OP_BR);
8042                                 ins->inst_target_bb = end_bblock;
8043                                 MONO_ADD_INS (cfg->cbb, ins);
8044                                 link_bblock (cfg, cfg->cbb, end_bblock);
8045                                 ip += 5;
8046                                 break;
8047                         } else if (cfg->backend->have_op_tail_call) {
8048                                 /* Handle tail calls similarly to calls */
8049                                 DISABLE_AOT (cfg);
8050
8051                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8052                                 call->method = cmethod;
8053                                 call->tail_call = TRUE;
8054                                 call->signature = mono_method_signature (cmethod);
8055                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8056                                 call->inst.inst_p0 = cmethod;
8057                                 for (i = 0; i < n; ++i)
8058                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8059
8060                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8061                                         call->vret_var = cfg->vret_addr;
8062
8063                                 mono_arch_emit_call (cfg, call);
8064                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8065                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8066                         } else {
8067                                 for (i = 0; i < num_args; ++i)
8068                                         /* Prevent arguments from being optimized away */
8069                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8070
8071                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8072                                 ins = (MonoInst*)call;
8073                                 ins->inst_p0 = cmethod;
8074                                 MONO_ADD_INS (cfg->cbb, ins);
8075                         }
8076
8077                         ip += 5;
8078                         start_new_bblock = 1;
8079                         break;
8080                 }
8081                 case CEE_CALLI: {
8082                         MonoInst *addr;
8083                         MonoMethodSignature *fsig;
8084
8085                         CHECK_OPSIZE (5);
8086                         token = read32 (ip + 1);
8087
8088                         ins = NULL;
8089
8090                         //GSHAREDVT_FAILURE (*ip);
8091                         cmethod = NULL;
8092                         CHECK_STACK (1);
8093                         --sp;
8094                         addr = *sp;
8095                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8096                         CHECK_CFG_ERROR;
8097
8098                         if (method->dynamic && fsig->pinvoke) {
8099                                 MonoInst *args [3];
8100
8101                                 /*
8102                                  * This is a call through a function pointer using a pinvoke
8103                                  * signature. Have to create a wrapper and call that instead.
8104                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8105                                  * instead based on the signature.
8106                                  */
8107                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8108                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8109                                 args [2] = addr;
8110                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8111                         }
8112
8113                         n = fsig->param_count + fsig->hasthis;
8114
8115                         CHECK_STACK (n);
8116
8117                         //g_assert (!virtual_ || fsig->hasthis);
8118
8119                         sp -= n;
8120
8121                         inline_costs += 10 * num_calls++;
8122
8123                         /*
8124                          * Making generic calls out of gsharedvt methods.
8125                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8126                          * patching gshared method addresses into a gsharedvt method.
8127                          */
8128                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8129                                 /*
8130                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8131                                  */
8132                                 MonoInst *callee = addr;
8133
8134                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8135                                         /* Not tested */
8136                                         GSHAREDVT_FAILURE (*ip);
8137
8138                                 if (cfg->llvm_only)
8139                                         // FIXME:
8140                                         GSHAREDVT_FAILURE (*ip);
8141
8142                                 addr = emit_get_rgctx_sig (cfg, context_used,
8143                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8144                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8145                                 goto calli_end;
8146                         }
8147
8148                         /* Prevent inlining of methods with indirect calls */
8149                         INLINE_FAILURE ("indirect call");
8150
8151                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8152                                 MonoJumpInfoType info_type;
8153                                 gpointer info_data;
8154
8155                                 /*
8156                                  * Instead of emitting an indirect call, emit a direct call
8157                                  * with the contents of the aotconst as the patch info.
8158                                  */
8159                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8160                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8161                                         info_data = addr->inst_p0;
8162                                 } else {
8163                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8164                                         info_data = addr->inst_right->inst_left;
8165                                 }
8166
8167                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8168                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8169                                         NULLIFY_INS (addr);
8170                                         goto calli_end;
8171                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8172                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8173                                         NULLIFY_INS (addr);
8174                                         goto calli_end;
8175                                 }
8176                         }
8177                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8178
8179                         calli_end:
8180
8181                         /* End of call, INS should contain the result of the call, if any */
8182
8183                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8184                                 g_assert (ins);
8185                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8186                         }
8187
8188                         CHECK_CFG_EXCEPTION;
8189
8190                         ip += 5;
8191                         ins_flag = 0;
8192                         constrained_class = NULL;
8193                         break;
8194                 }
8195                 case CEE_CALL:
8196                 case CEE_CALLVIRT: {
8197                         MonoInst *addr = NULL;
8198                         MonoMethodSignature *fsig = NULL;
8199                         int array_rank = 0;
8200                         int virtual_ = *ip == CEE_CALLVIRT;
8201                         gboolean pass_imt_from_rgctx = FALSE;
8202                         MonoInst *imt_arg = NULL;
8203                         MonoInst *keep_this_alive = NULL;
8204                         gboolean pass_vtable = FALSE;
8205                         gboolean pass_mrgctx = FALSE;
8206                         MonoInst *vtable_arg = NULL;
8207                         gboolean check_this = FALSE;
8208                         gboolean supported_tail_call = FALSE;
8209                         gboolean tail_call = FALSE;
8210                         gboolean need_seq_point = FALSE;
8211                         guint32 call_opcode = *ip;
8212                         gboolean emit_widen = TRUE;
8213                         gboolean push_res = TRUE;
8214                         gboolean skip_ret = FALSE;
8215                         gboolean delegate_invoke = FALSE;
8216                         gboolean direct_icall = FALSE;
8217                         gboolean constrained_partial_call = FALSE;
8218                         MonoMethod *cil_method;
8219
8220                         CHECK_OPSIZE (5);
8221                         token = read32 (ip + 1);
8222
8223                         ins = NULL;
8224
8225                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8226                         CHECK_CFG_ERROR;
8227
8228                         cil_method = cmethod;
8229
8230                         if (constrained_class) {
8231                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8232                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8233                                                 g_assert (!cmethod->klass->valuetype);
8234                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8235                                                         constrained_partial_call = TRUE;
8236                                         }
8237                                 }
8238
8239                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8240                                         if (cfg->verbose_level > 2)
8241                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8242                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8243                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8244                                                   cfg->gshared)) {
8245                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8246                                                 CHECK_CFG_ERROR;
8247                                         }
8248                                 } else {
8249                                         if (cfg->verbose_level > 2)
8250                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8251
8252                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8253                                                 /*
8254                                                  * This is needed since get_method_constrained can't find
8255                                                  * the method in klass representing a type var.
8256                                                  * The type var is guaranteed to be a reference type in this
8257                                                  * case.
8258                                                  */
8259                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8260                                                         g_assert (!cmethod->klass->valuetype);
8261                                         } else {
8262                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8263                                                 CHECK_CFG_ERROR;
8264                                         }
8265                                 }
8266
8267                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8268                                         /* Use the corresponding method from the base type to avoid boxing */
8269                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8270                                         g_assert (base_type);
8271                                         constrained_class = mono_class_from_mono_type (base_type);
8272                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8273                                         g_assert (cmethod);
8274                                 }
8275                         }
8276
8277                         if (!dont_verify && !cfg->skip_visibility) {
8278                                 MonoMethod *target_method = cil_method;
8279                                 if (method->is_inflated) {
8280                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8281                                         CHECK_CFG_ERROR;
8282                                 }
8283                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8284                                         !mono_method_can_access_method (method, cil_method))
8285                                         emit_method_access_failure (cfg, method, cil_method);
8286                         }
8287
8288                         if (mono_security_core_clr_enabled ())
8289                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8290
8291                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8292                                 /* MS.NET seems to silently convert this to a callvirt */
8293                                 virtual_ = 1;
8294
8295                         {
8296                                 /*
8297                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8298                                  * converts to a callvirt.
8299                                  *
8300                                  * tests/bug-515884.il is an example of this behavior
8301                                  */
8302                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8303                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8304                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8305                                         virtual_ = 1;
8306                         }
8307
8308                         if (!cmethod->klass->inited)
8309                                 if (!mono_class_init (cmethod->klass))
8310                                         TYPE_LOAD_ERROR (cmethod->klass);
8311
8312                         fsig = mono_method_signature (cmethod);
8313                         if (!fsig)
8314                                 LOAD_ERROR;
8315                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8316                                 mini_class_is_system_array (cmethod->klass)) {
8317                                 array_rank = cmethod->klass->rank;
8318                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8319                                 direct_icall = TRUE;
8320                         } else if (fsig->pinvoke) {
8321                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8322                                 fsig = mono_method_signature (wrapper);
8323                         } else if (constrained_class) {
8324                         } else {
8325                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8326                                 CHECK_CFG_ERROR;
8327                         }
8328
8329                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8330                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8331
8332                         /* See code below */
8333                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8334                                 MonoBasicBlock *tbb;
8335
8336                                 GET_BBLOCK (cfg, tbb, ip + 5);
8337                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8338                                         /*
8339                                          * We want to extend the try block to cover the call, but we can't do it if the
8340                                          * call is made directly since its followed by an exception check.
8341                                          */
8342                                         direct_icall = FALSE;
8343                                 }
8344                         }
8345
8346                         mono_save_token_info (cfg, image, token, cil_method);
8347
8348                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8349                                 need_seq_point = TRUE;
8350
8351                         /* Don't support calls made using type arguments for now */
8352                         /*
8353                           if (cfg->gsharedvt) {
8354                           if (mini_is_gsharedvt_signature (fsig))
8355                           GSHAREDVT_FAILURE (*ip);
8356                           }
8357                         */
8358
8359                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8360                                 g_assert_not_reached ();
8361
8362                         n = fsig->param_count + fsig->hasthis;
8363
8364                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8365                                 UNVERIFIED;
8366
8367                         if (!cfg->gshared)
8368                                 g_assert (!mono_method_check_context_used (cmethod));
8369
8370                         CHECK_STACK (n);
8371
8372                         //g_assert (!virtual_ || fsig->hasthis);
8373
8374                         sp -= n;
8375
8376                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8377                                 cfg->cbb->out_of_line = TRUE;
8378
8379                         /*
8380                          * We have the `constrained.' prefix opcode.
8381                          */
8382                         if (constrained_class) {
8383                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8384                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8385                                                 /* The 'Own method' case below */
8386                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8387                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8388                                         } else {
8389                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8390                                                 CHECK_CFG_EXCEPTION;
8391                                                 g_assert (ins);
8392                                                 goto call_end;
8393                                         }
8394                                 }
8395
8396                                 if (constrained_partial_call) {
8397                                         gboolean need_box = TRUE;
8398
8399                                         /*
8400                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8401                                          * called method is not known at compile time either. The called method could end up being
8402                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8403                                          * to box the receiver.
8404                                          * A simple solution would be to box always and make a normal virtual call, but that would
8405                                          * be bad performance wise.
8406                                          */
8407                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8408                                                 /*
8409                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8410                                                  */
8411                                                 need_box = FALSE;
8412                                         }
8413
8414                                         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)) {
8415                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8416                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8417                                                 ins->klass = constrained_class;
8418                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8419                                                 CHECK_CFG_EXCEPTION;
8420                                         } else if (need_box) {
8421                                                 MonoInst *box_type;
8422                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8423                                                 MonoInst *nonbox_call;
8424
8425                                                 /*
8426                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8427                                                  * if needed.
8428                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8429                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8430                                                  */
8431                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8432
8433                                                 NEW_BBLOCK (cfg, is_ref_bb);
8434                                                 NEW_BBLOCK (cfg, end_bb);
8435
8436                                                 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);
8437                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8438                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8439
8440                                                 /* Non-ref case */
8441                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8442
8443                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8444
8445                                                 /* Ref case */
8446                                                 MONO_START_BB (cfg, is_ref_bb);
8447                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8448                                                 ins->klass = constrained_class;
8449                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8450                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8451
8452                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8453
8454                                                 MONO_START_BB (cfg, end_bb);
8455                                                 cfg->cbb = end_bb;
8456
8457                                                 nonbox_call->dreg = ins->dreg;
8458                                                 goto call_end;
8459                                         } else {
8460                                                 g_assert (mono_class_is_interface (cmethod->klass));
8461                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8462                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8463                                                 goto call_end;
8464                                         }
8465                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8466                                         /*
8467                                          * The type parameter is instantiated as a valuetype,
8468                                          * but that type doesn't override the method we're
8469                                          * calling, so we need to box `this'.
8470                                          */
8471                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8472                                         ins->klass = constrained_class;
8473                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8474                                         CHECK_CFG_EXCEPTION;
8475                                 } else if (!constrained_class->valuetype) {
8476                                         int dreg = alloc_ireg_ref (cfg);
8477
8478                                         /*
8479                                          * The type parameter is instantiated as a reference
8480                                          * type.  We have a managed pointer on the stack, so
8481                                          * we need to dereference it here.
8482                                          */
8483                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8484                                         ins->type = STACK_OBJ;
8485                                         sp [0] = ins;
8486                                 } else {
8487                                         if (cmethod->klass->valuetype) {
8488                                                 /* Own method */
8489                                         } else {
8490                                                 /* Interface method */
8491                                                 int ioffset, slot;
8492
8493                                                 mono_class_setup_vtable (constrained_class);
8494                                                 CHECK_TYPELOAD (constrained_class);
8495                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8496                                                 if (ioffset == -1)
8497                                                         TYPE_LOAD_ERROR (constrained_class);
8498                                                 slot = mono_method_get_vtable_slot (cmethod);
8499                                                 if (slot == -1)
8500                                                         TYPE_LOAD_ERROR (cmethod->klass);
8501                                                 cmethod = constrained_class->vtable [ioffset + slot];
8502
8503                                                 if (cmethod->klass == mono_defaults.enum_class) {
8504                                                         /* Enum implements some interfaces, so treat this as the first case */
8505                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8506                                                         ins->klass = constrained_class;
8507                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8508                                                         CHECK_CFG_EXCEPTION;
8509                                                 }
8510                                         }
8511                                         virtual_ = 0;
8512                                 }
8513                                 constrained_class = NULL;
8514                         }
8515
8516                         if (check_call_signature (cfg, fsig, sp))
8517                                 UNVERIFIED;
8518
8519                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8520                                 delegate_invoke = TRUE;
8521
8522                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8523                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8524                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8525                                         emit_widen = FALSE;
8526                                 }
8527
8528                                 goto call_end;
8529                         }
8530
8531                         /*
8532                          * If the callee is a shared method, then its static cctor
8533                          * might not get called after the call was patched.
8534                          */
8535                         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)) {
8536                                 emit_class_init (cfg, cmethod->klass);
8537                                 CHECK_TYPELOAD (cmethod->klass);
8538                         }
8539
8540                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8541
8542                         if (cfg->gshared) {
8543                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8544
8545                                 context_used = mini_method_check_context_used (cfg, cmethod);
8546
8547                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8548                                         /* Generic method interface
8549                                            calls are resolved via a
8550                                            helper function and don't
8551                                            need an imt. */
8552                                         if (!cmethod_context || !cmethod_context->method_inst)
8553                                                 pass_imt_from_rgctx = TRUE;
8554                                 }
8555
8556                                 /*
8557                                  * If a shared method calls another
8558                                  * shared method then the caller must
8559                                  * have a generic sharing context
8560                                  * because the magic trampoline
8561                                  * requires it.  FIXME: We shouldn't
8562                                  * have to force the vtable/mrgctx
8563                                  * variable here.  Instead there
8564                                  * should be a flag in the cfg to
8565                                  * request a generic sharing context.
8566                                  */
8567                                 if (context_used &&
8568                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8569                                         mono_get_vtable_var (cfg);
8570                         }
8571
8572                         if (pass_vtable) {
8573                                 if (context_used) {
8574                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8575                                 } else {
8576                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8577
8578                                         CHECK_TYPELOAD (cmethod->klass);
8579                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8580                                 }
8581                         }
8582
8583                         if (pass_mrgctx) {
8584                                 g_assert (!vtable_arg);
8585
8586                                 if (!cfg->compile_aot) {
8587                                         /*
8588                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8589                                          * for type load errors before.
8590                                          */
8591                                         mono_class_setup_vtable (cmethod->klass);
8592                                         CHECK_TYPELOAD (cmethod->klass);
8593                                 }
8594
8595                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8596
8597                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8598                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8599                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8600                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8601                                         if (virtual_)
8602                                                 check_this = TRUE;
8603                                         virtual_ = 0;
8604                                 }
8605                         }
8606
8607                         if (pass_imt_from_rgctx) {
8608                                 g_assert (!pass_vtable);
8609
8610                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8611                                         cmethod, MONO_RGCTX_INFO_METHOD);
8612                         }
8613
8614                         if (check_this)
8615                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8616
8617                         /* Calling virtual generic methods */
8618                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8619                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8620                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8621                             fsig->generic_param_count &&
8622                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8623                                 !cfg->llvm_only) {
8624                                 MonoInst *this_temp, *this_arg_temp, *store;
8625                                 MonoInst *iargs [4];
8626
8627                                 g_assert (fsig->is_inflated);
8628
8629                                 /* Prevent inlining of methods that contain indirect calls */
8630                                 INLINE_FAILURE ("virtual generic call");
8631
8632                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8633                                         GSHAREDVT_FAILURE (*ip);
8634
8635                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8636                                         g_assert (!imt_arg);
8637                                         if (!context_used)
8638                                                 g_assert (cmethod->is_inflated);
8639                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8640                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8641                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8642                                 } else {
8643                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8644                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8645                                         MONO_ADD_INS (cfg->cbb, store);
8646
8647                                         /* FIXME: This should be a managed pointer */
8648                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8649
8650                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8651                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8652                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8653                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8654                                         addr = mono_emit_jit_icall (cfg,
8655                                                                                                 mono_helper_compile_generic_method, iargs);
8656
8657                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8658
8659                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8660                                 }
8661
8662                                 goto call_end;
8663                         }
8664
8665                         /*
8666                          * Implement a workaround for the inherent races involved in locking:
8667                          * Monitor.Enter ()
8668                          * try {
8669                          * } finally {
8670                          *    Monitor.Exit ()
8671                          * }
8672                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8673                          * try block, the Exit () won't be executed, see:
8674                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8675                          * To work around this, we extend such try blocks to include the last x bytes
8676                          * of the Monitor.Enter () call.
8677                          */
8678                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8679                                 MonoBasicBlock *tbb;
8680
8681                                 GET_BBLOCK (cfg, tbb, ip + 5);
8682                                 /*
8683                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8684                                  * from Monitor.Enter like ArgumentNullException.
8685                                  */
8686                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8687                                         /* Mark this bblock as needing to be extended */
8688                                         tbb->extend_try_block = TRUE;
8689                                 }
8690                         }
8691
8692                         /* Conversion to a JIT intrinsic */
8693                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8694                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8695                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8696                                         emit_widen = FALSE;
8697                                 }
8698                                 goto call_end;
8699                         }
8700                         CHECK_CFG_ERROR;
8701
8702                         /* Inlining */
8703                         if ((cfg->opt & MONO_OPT_INLINE) &&
8704                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8705                             mono_method_check_inlining (cfg, cmethod)) {
8706                                 int costs;
8707                                 gboolean always = FALSE;
8708
8709                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8710                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8711                                         /* Prevent inlining of methods that call wrappers */
8712                                         INLINE_FAILURE ("wrapper call");
8713                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8714                                         always = TRUE;
8715                                 }
8716
8717                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8718                                 if (costs) {
8719                                         cfg->real_offset += 5;
8720
8721                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8722                                                 /* *sp is already set by inline_method */
8723                                                 sp++;
8724                                                 push_res = FALSE;
8725                                         }
8726
8727                                         inline_costs += costs;
8728
8729                                         goto call_end;
8730                                 }
8731                         }
8732
8733                         /* Tail recursion elimination */
8734                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8735                                 gboolean has_vtargs = FALSE;
8736                                 int i;
8737
8738                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8739                                 INLINE_FAILURE ("tail call");
8740
8741                                 /* keep it simple */
8742                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8743                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8744                                                 has_vtargs = TRUE;
8745                                 }
8746
8747                                 if (!has_vtargs) {
8748                                         if (need_seq_point) {
8749                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8750                                                 need_seq_point = FALSE;
8751                                         }
8752                                         for (i = 0; i < n; ++i)
8753                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8754                                         MONO_INST_NEW (cfg, ins, OP_BR);
8755                                         MONO_ADD_INS (cfg->cbb, ins);
8756                                         tblock = start_bblock->out_bb [0];
8757                                         link_bblock (cfg, cfg->cbb, tblock);
8758                                         ins->inst_target_bb = tblock;
8759                                         start_new_bblock = 1;
8760
8761                                         /* skip the CEE_RET, too */
8762                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8763                                                 skip_ret = TRUE;
8764                                         push_res = FALSE;
8765                                         goto call_end;
8766                                 }
8767                         }
8768
8769                         inline_costs += 10 * num_calls++;
8770
8771                         /*
8772                          * Synchronized wrappers.
8773                          * Its hard to determine where to replace a method with its synchronized
8774                          * wrapper without causing an infinite recursion. The current solution is
8775                          * to add the synchronized wrapper in the trampolines, and to
8776                          * change the called method to a dummy wrapper, and resolve that wrapper
8777                          * to the real method in mono_jit_compile_method ().
8778                          */
8779                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8780                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8781                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8782                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8783                         }
8784
8785                         /*
8786                          * Making generic calls out of gsharedvt methods.
8787                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8788                          * patching gshared method addresses into a gsharedvt method.
8789                          */
8790                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8791                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8792                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8793                                 MonoRgctxInfoType info_type;
8794
8795                                 if (virtual_) {
8796                                         //if (mono_class_is_interface (cmethod->klass))
8797                                                 //GSHAREDVT_FAILURE (*ip);
8798                                         // disable for possible remoting calls
8799                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8800                                                 GSHAREDVT_FAILURE (*ip);
8801                                         if (fsig->generic_param_count) {
8802                                                 /* virtual generic call */
8803                                                 g_assert (!imt_arg);
8804                                                 /* Same as the virtual generic case above */
8805                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8806                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8807                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8808                                                 vtable_arg = NULL;
8809                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8810                                                 /* This can happen when we call a fully instantiated iface method */
8811                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8812                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8813                                                 vtable_arg = NULL;
8814                                         }
8815                                 }
8816
8817                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8818                                         keep_this_alive = sp [0];
8819
8820                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8821                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8822                                 else
8823                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8824                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8825
8826                                 if (cfg->llvm_only) {
8827                                         // FIXME: Avoid initializing vtable_arg
8828                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8829                                 } else {
8830                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8831                                 }
8832                                 goto call_end;
8833                         }
8834
8835                         /* Generic sharing */
8836
8837                         /*
8838                          * Use this if the callee is gsharedvt sharable too, since
8839                          * at runtime we might find an instantiation so the call cannot
8840                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8841                          */
8842                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8843                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8844                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8845                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8846                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8847                                 INLINE_FAILURE ("gshared");
8848
8849                                 g_assert (cfg->gshared && cmethod);
8850                                 g_assert (!addr);
8851
8852                                 /*
8853                                  * We are compiling a call to a
8854                                  * generic method from shared code,
8855                                  * which means that we have to look up
8856                                  * the method in the rgctx and do an
8857                                  * indirect call.
8858                                  */
8859                                 if (fsig->hasthis)
8860                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8861
8862                                 if (cfg->llvm_only) {
8863                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8864                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8865                                         else
8866                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8867                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8868                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8869                                 } else {
8870                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8871                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8872                                 }
8873                                 goto call_end;
8874                         }
8875
8876                         /* Direct calls to icalls */
8877                         if (direct_icall) {
8878                                 MonoMethod *wrapper;
8879                                 int costs;
8880
8881                                 /* Inline the wrapper */
8882                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8883
8884                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8885                                 g_assert (costs > 0);
8886                                 cfg->real_offset += 5;
8887
8888                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8889                                         /* *sp is already set by inline_method */
8890                                         sp++;
8891                                         push_res = FALSE;
8892                                 }
8893
8894                                 inline_costs += costs;
8895
8896                                 goto call_end;
8897                         }
8898
8899                         /* Array methods */
8900                         if (array_rank) {
8901                                 MonoInst *addr;
8902
8903                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8904                                         MonoInst *val = sp [fsig->param_count];
8905
8906                                         if (val->type == STACK_OBJ) {
8907                                                 MonoInst *iargs [2];
8908
8909                                                 iargs [0] = sp [0];
8910                                                 iargs [1] = val;
8911
8912                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8913                                         }
8914
8915                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8916                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8917                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8918                                                 mini_emit_write_barrier (cfg, addr, val);
8919                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8920                                                 GSHAREDVT_FAILURE (*ip);
8921                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8922                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8923
8924                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8925                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8926                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8927                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8928                                         CHECK_TYPELOAD (cmethod->klass);
8929
8930                                         readonly = FALSE;
8931                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8932                                         ins = addr;
8933                                 } else {
8934                                         g_assert_not_reached ();
8935                                 }
8936
8937                                 emit_widen = FALSE;
8938                                 goto call_end;
8939                         }
8940
8941                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
8942                         if (ins)
8943                                 goto call_end;
8944
8945                         /* Tail prefix / tail call optimization */
8946
8947                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8948                         /* FIXME: runtime generic context pointer for jumps? */
8949                         /* FIXME: handle this for generic sharing eventually */
8950                         if ((ins_flag & MONO_INST_TAILCALL) &&
8951                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
8952                                 supported_tail_call = TRUE;
8953
8954                         if (supported_tail_call) {
8955                                 MonoCallInst *call;
8956
8957                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8958                                 INLINE_FAILURE ("tail call");
8959
8960                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8961
8962                                 if (cfg->backend->have_op_tail_call) {
8963                                         /* Handle tail calls similarly to normal calls */
8964                                         tail_call = TRUE;
8965                                 } else {
8966                                         mini_profiler_emit_tail_call (cfg, cmethod);
8967
8968                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8969                                         call->tail_call = TRUE;
8970                                         call->method = cmethod;
8971                                         call->signature = mono_method_signature (cmethod);
8972
8973                                         /*
8974                                          * We implement tail calls by storing the actual arguments into the
8975                                          * argument variables, then emitting a CEE_JMP.
8976                                          */
8977                                         for (i = 0; i < n; ++i) {
8978                                                 /* Prevent argument from being register allocated */
8979                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
8980                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8981                                         }
8982                                         ins = (MonoInst*)call;
8983                                         ins->inst_p0 = cmethod;
8984                                         ins->inst_p1 = arg_array [0];
8985                                         MONO_ADD_INS (cfg->cbb, ins);
8986                                         link_bblock (cfg, cfg->cbb, end_bblock);
8987                                         start_new_bblock = 1;
8988
8989                                         // FIXME: Eliminate unreachable epilogs
8990
8991                                         /*
8992                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
8993                                          * only reachable from this call.
8994                                          */
8995                                         GET_BBLOCK (cfg, tblock, ip + 5);
8996                                         if (tblock == cfg->cbb || tblock->in_count == 0)
8997                                                 skip_ret = TRUE;
8998                                         push_res = FALSE;
8999
9000                                         goto call_end;
9001                                 }
9002                         }
9003
9004                         /*
9005                          * Virtual calls in llvm-only mode.
9006                          */
9007                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9008                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9009                                 goto call_end;
9010                         }
9011
9012                         /* Common call */
9013                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9014                                 INLINE_FAILURE ("call");
9015                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9016                                                                                           imt_arg, vtable_arg);
9017
9018                         if (tail_call && !cfg->llvm_only) {
9019                                 link_bblock (cfg, cfg->cbb, end_bblock);
9020                                 start_new_bblock = 1;
9021
9022                                 // FIXME: Eliminate unreachable epilogs
9023
9024                                 /*
9025                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9026                                  * only reachable from this call.
9027                                  */
9028                                 GET_BBLOCK (cfg, tblock, ip + 5);
9029                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9030                                         skip_ret = TRUE;
9031                                 push_res = FALSE;
9032                         }
9033
9034                         call_end:
9035
9036                         /* End of call, INS should contain the result of the call, if any */
9037
9038                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9039                                 g_assert (ins);
9040                                 if (emit_widen)
9041                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9042                                 else
9043                                         *sp++ = ins;
9044                         }
9045
9046                         if (keep_this_alive) {
9047                                 MonoInst *dummy_use;
9048
9049                                 /* See mono_emit_method_call_full () */
9050                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9051                         }
9052
9053                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9054                                 /*
9055                                  * Clang can convert these calls to tail calls which screw up the stack
9056                                  * walk. This happens even when the -fno-optimize-sibling-calls
9057                                  * option is passed to clang.
9058                                  * Work around this by emitting a dummy call.
9059                                  */
9060                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9061                         }
9062
9063                         CHECK_CFG_EXCEPTION;
9064
9065                         ip += 5;
9066                         if (skip_ret) {
9067                                 g_assert (*ip == CEE_RET);
9068                                 ip += 1;
9069                         }
9070                         ins_flag = 0;
9071                         constrained_class = NULL;
9072                         if (need_seq_point)
9073                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9074                         break;
9075                 }
9076                 case CEE_RET:
9077                         mini_profiler_emit_leave (cfg, sig->ret->type != MONO_TYPE_VOID ? sp [-1] : NULL);
9078
9079                         if (cfg->method != method) {
9080                                 /* return from inlined method */
9081                                 /*
9082                                  * If in_count == 0, that means the ret is unreachable due to
9083                                  * being preceeded by a throw. In that case, inline_method () will
9084                                  * handle setting the return value
9085                                  * (test case: test_0_inline_throw ()).
9086                                  */
9087                                 if (return_var && cfg->cbb->in_count) {
9088                                         MonoType *ret_type = mono_method_signature (method)->ret;
9089
9090                                         MonoInst *store;
9091                                         CHECK_STACK (1);
9092                                         --sp;
9093
9094                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9095                                                 UNVERIFIED;
9096
9097                                         //g_assert (returnvar != -1);
9098                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9099                                         cfg->ret_var_set = TRUE;
9100                                 }
9101                         } else {
9102                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9103                                         emit_pop_lmf (cfg);
9104
9105                                 if (cfg->ret) {
9106                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9107
9108                                         if (seq_points && !sym_seq_points) {
9109                                                 /*
9110                                                  * Place a seq point here too even through the IL stack is not
9111                                                  * empty, so a step over on
9112                                                  * call <FOO>
9113                                                  * ret
9114                                                  * will work correctly.
9115                                                  */
9116                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9117                                                 MONO_ADD_INS (cfg->cbb, ins);
9118                                         }
9119
9120                                         g_assert (!return_var);
9121                                         CHECK_STACK (1);
9122                                         --sp;
9123
9124                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9125                                                 UNVERIFIED;
9126
9127                                         emit_setret (cfg, *sp);
9128                                 }
9129                         }
9130                         if (sp != stack_start)
9131                                 UNVERIFIED;
9132                         MONO_INST_NEW (cfg, ins, OP_BR);
9133                         ip++;
9134                         ins->inst_target_bb = end_bblock;
9135                         MONO_ADD_INS (cfg->cbb, ins);
9136                         link_bblock (cfg, cfg->cbb, end_bblock);
9137                         start_new_bblock = 1;
9138                         break;
9139                 case CEE_BR_S:
9140                         CHECK_OPSIZE (2);
9141                         MONO_INST_NEW (cfg, ins, OP_BR);
9142                         ip++;
9143                         target = ip + 1 + (signed char)(*ip);
9144                         ++ip;
9145                         GET_BBLOCK (cfg, tblock, target);
9146                         link_bblock (cfg, cfg->cbb, tblock);
9147                         ins->inst_target_bb = tblock;
9148                         if (sp != stack_start) {
9149                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9150                                 sp = stack_start;
9151                                 CHECK_UNVERIFIABLE (cfg);
9152                         }
9153                         MONO_ADD_INS (cfg->cbb, ins);
9154                         start_new_bblock = 1;
9155                         inline_costs += BRANCH_COST;
9156                         break;
9157                 case CEE_BEQ_S:
9158                 case CEE_BGE_S:
9159                 case CEE_BGT_S:
9160                 case CEE_BLE_S:
9161                 case CEE_BLT_S:
9162                 case CEE_BNE_UN_S:
9163                 case CEE_BGE_UN_S:
9164                 case CEE_BGT_UN_S:
9165                 case CEE_BLE_UN_S:
9166                 case CEE_BLT_UN_S:
9167                         CHECK_OPSIZE (2);
9168                         CHECK_STACK (2);
9169                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9170                         ip++;
9171                         target = ip + 1 + *(signed char*)ip;
9172                         ip++;
9173
9174                         ADD_BINCOND (NULL);
9175
9176                         sp = stack_start;
9177                         inline_costs += BRANCH_COST;
9178                         break;
9179                 case CEE_BR:
9180                         CHECK_OPSIZE (5);
9181                         MONO_INST_NEW (cfg, ins, OP_BR);
9182                         ip++;
9183
9184                         target = ip + 4 + (gint32)read32(ip);
9185                         ip += 4;
9186                         GET_BBLOCK (cfg, tblock, target);
9187                         link_bblock (cfg, cfg->cbb, tblock);
9188                         ins->inst_target_bb = tblock;
9189                         if (sp != stack_start) {
9190                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9191                                 sp = stack_start;
9192                                 CHECK_UNVERIFIABLE (cfg);
9193                         }
9194
9195                         MONO_ADD_INS (cfg->cbb, ins);
9196
9197                         start_new_bblock = 1;
9198                         inline_costs += BRANCH_COST;
9199                         break;
9200                 case CEE_BRFALSE_S:
9201                 case CEE_BRTRUE_S:
9202                 case CEE_BRFALSE:
9203                 case CEE_BRTRUE: {
9204                         MonoInst *cmp;
9205                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9206                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9207                         guint32 opsize = is_short ? 1 : 4;
9208
9209                         CHECK_OPSIZE (opsize);
9210                         CHECK_STACK (1);
9211                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9212                                 UNVERIFIED;
9213                         ip ++;
9214                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9215                         ip += opsize;
9216
9217                         sp--;
9218
9219                         GET_BBLOCK (cfg, tblock, target);
9220                         link_bblock (cfg, cfg->cbb, tblock);
9221                         GET_BBLOCK (cfg, tblock, ip);
9222                         link_bblock (cfg, cfg->cbb, tblock);
9223
9224                         if (sp != stack_start) {
9225                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9226                                 CHECK_UNVERIFIABLE (cfg);
9227                         }
9228
9229                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9230                         cmp->sreg1 = sp [0]->dreg;
9231                         type_from_op (cfg, cmp, sp [0], NULL);
9232                         CHECK_TYPE (cmp);
9233
9234 #if SIZEOF_REGISTER == 4
9235                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9236                                 /* Convert it to OP_LCOMPARE */
9237                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9238                                 ins->type = STACK_I8;
9239                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9240                                 ins->inst_l = 0;
9241                                 MONO_ADD_INS (cfg->cbb, ins);
9242                                 cmp->opcode = OP_LCOMPARE;
9243                                 cmp->sreg2 = ins->dreg;
9244                         }
9245 #endif
9246                         MONO_ADD_INS (cfg->cbb, cmp);
9247
9248                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9249                         type_from_op (cfg, ins, sp [0], NULL);
9250                         MONO_ADD_INS (cfg->cbb, ins);
9251                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9252                         GET_BBLOCK (cfg, tblock, target);
9253                         ins->inst_true_bb = tblock;
9254                         GET_BBLOCK (cfg, tblock, ip);
9255                         ins->inst_false_bb = tblock;
9256                         start_new_bblock = 2;
9257
9258                         sp = stack_start;
9259                         inline_costs += BRANCH_COST;
9260                         break;
9261                 }
9262                 case CEE_BEQ:
9263                 case CEE_BGE:
9264                 case CEE_BGT:
9265                 case CEE_BLE:
9266                 case CEE_BLT:
9267                 case CEE_BNE_UN:
9268                 case CEE_BGE_UN:
9269                 case CEE_BGT_UN:
9270                 case CEE_BLE_UN:
9271                 case CEE_BLT_UN:
9272                         CHECK_OPSIZE (5);
9273                         CHECK_STACK (2);
9274                         MONO_INST_NEW (cfg, ins, *ip);
9275                         ip++;
9276                         target = ip + 4 + (gint32)read32(ip);
9277                         ip += 4;
9278
9279                         ADD_BINCOND (NULL);
9280
9281                         sp = stack_start;
9282                         inline_costs += BRANCH_COST;
9283                         break;
9284                 case CEE_SWITCH: {
9285                         MonoInst *src1;
9286                         MonoBasicBlock **targets;
9287                         MonoBasicBlock *default_bblock;
9288                         MonoJumpInfoBBTable *table;
9289                         int offset_reg = alloc_preg (cfg);
9290                         int target_reg = alloc_preg (cfg);
9291                         int table_reg = alloc_preg (cfg);
9292                         int sum_reg = alloc_preg (cfg);
9293                         gboolean use_op_switch;
9294
9295                         CHECK_OPSIZE (5);
9296                         CHECK_STACK (1);
9297                         n = read32 (ip + 1);
9298                         --sp;
9299                         src1 = sp [0];
9300                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9301                                 UNVERIFIED;
9302
9303                         ip += 5;
9304                         CHECK_OPSIZE (n * sizeof (guint32));
9305                         target = ip + n * sizeof (guint32);
9306
9307                         GET_BBLOCK (cfg, default_bblock, target);
9308                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9309
9310                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9311                         for (i = 0; i < n; ++i) {
9312                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9313                                 targets [i] = tblock;
9314                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9315                                 ip += 4;
9316                         }
9317
9318                         if (sp != stack_start) {
9319                                 /*
9320                                  * Link the current bb with the targets as well, so handle_stack_args
9321                                  * will set their in_stack correctly.
9322                                  */
9323                                 link_bblock (cfg, cfg->cbb, default_bblock);
9324                                 for (i = 0; i < n; ++i)
9325                                         link_bblock (cfg, cfg->cbb, targets [i]);
9326
9327                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9328                                 sp = stack_start;
9329                                 CHECK_UNVERIFIABLE (cfg);
9330
9331                                 /* Undo the links */
9332                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9333                                 for (i = 0; i < n; ++i)
9334                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9335                         }
9336
9337                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9338                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9339
9340                         for (i = 0; i < n; ++i)
9341                                 link_bblock (cfg, cfg->cbb, targets [i]);
9342
9343                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9344                         table->table = targets;
9345                         table->table_size = n;
9346
9347                         use_op_switch = FALSE;
9348 #ifdef TARGET_ARM
9349                         /* ARM implements SWITCH statements differently */
9350                         /* FIXME: Make it use the generic implementation */
9351                         if (!cfg->compile_aot)
9352                                 use_op_switch = TRUE;
9353 #endif
9354
9355                         if (COMPILE_LLVM (cfg))
9356                                 use_op_switch = TRUE;
9357
9358                         cfg->cbb->has_jump_table = 1;
9359
9360                         if (use_op_switch) {
9361                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9362                                 ins->sreg1 = src1->dreg;
9363                                 ins->inst_p0 = table;
9364                                 ins->inst_many_bb = targets;
9365                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9366                                 MONO_ADD_INS (cfg->cbb, ins);
9367                         } else {
9368                                 if (sizeof (gpointer) == 8)
9369                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9370                                 else
9371                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9372
9373 #if SIZEOF_REGISTER == 8
9374                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9375                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9376 #endif
9377
9378                                 if (cfg->compile_aot) {
9379                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9380                                 } else {
9381                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9382                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9383                                         ins->inst_p0 = table;
9384                                         ins->dreg = table_reg;
9385                                         MONO_ADD_INS (cfg->cbb, ins);
9386                                 }
9387
9388                                 /* FIXME: Use load_memindex */
9389                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9390                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9391                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9392                         }
9393                         start_new_bblock = 1;
9394                         inline_costs += (BRANCH_COST * 2);
9395                         break;
9396                 }
9397                 case CEE_LDIND_I1:
9398                 case CEE_LDIND_U1:
9399                 case CEE_LDIND_I2:
9400                 case CEE_LDIND_U2:
9401                 case CEE_LDIND_I4:
9402                 case CEE_LDIND_U4:
9403                 case CEE_LDIND_I8:
9404                 case CEE_LDIND_I:
9405                 case CEE_LDIND_R4:
9406                 case CEE_LDIND_R8:
9407                 case CEE_LDIND_REF:
9408                         CHECK_STACK (1);
9409                         --sp;
9410
9411                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9412                         *sp++ = ins;
9413                         ins_flag = 0;
9414                         ++ip;
9415                         break;
9416                 case CEE_STIND_REF:
9417                 case CEE_STIND_I1:
9418                 case CEE_STIND_I2:
9419                 case CEE_STIND_I4:
9420                 case CEE_STIND_I8:
9421                 case CEE_STIND_R4:
9422                 case CEE_STIND_R8:
9423                 case CEE_STIND_I:
9424                         CHECK_STACK (2);
9425                         sp -= 2;
9426
9427                         if (ins_flag & MONO_INST_VOLATILE) {
9428                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9429                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9430                         }
9431
9432                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9433                         ins->flags |= ins_flag;
9434                         ins_flag = 0;
9435
9436                         MONO_ADD_INS (cfg->cbb, ins);
9437
9438                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9439                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9440
9441                         inline_costs += 1;
9442                         ++ip;
9443                         break;
9444
9445                 case CEE_MUL:
9446                         CHECK_STACK (2);
9447
9448                         MONO_INST_NEW (cfg, ins, (*ip));
9449                         sp -= 2;
9450                         ins->sreg1 = sp [0]->dreg;
9451                         ins->sreg2 = sp [1]->dreg;
9452                         type_from_op (cfg, ins, sp [0], sp [1]);
9453                         CHECK_TYPE (ins);
9454                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9455
9456                         /* Use the immediate opcodes if possible */
9457                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9458                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9459                                 if (imm_opcode != -1) {
9460                                         ins->opcode = imm_opcode;
9461                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9462                                         ins->sreg2 = -1;
9463
9464                                         NULLIFY_INS (sp [1]);
9465                                 }
9466                         }
9467
9468                         MONO_ADD_INS ((cfg)->cbb, (ins));
9469
9470                         *sp++ = mono_decompose_opcode (cfg, ins);
9471                         ip++;
9472                         break;
9473                 case CEE_ADD:
9474                 case CEE_SUB:
9475                 case CEE_DIV:
9476                 case CEE_DIV_UN:
9477                 case CEE_REM:
9478                 case CEE_REM_UN:
9479                 case CEE_AND:
9480                 case CEE_OR:
9481                 case CEE_XOR:
9482                 case CEE_SHL:
9483                 case CEE_SHR:
9484                 case CEE_SHR_UN:
9485                         CHECK_STACK (2);
9486
9487                         MONO_INST_NEW (cfg, ins, (*ip));
9488                         sp -= 2;
9489                         ins->sreg1 = sp [0]->dreg;
9490                         ins->sreg2 = sp [1]->dreg;
9491                         type_from_op (cfg, ins, sp [0], sp [1]);
9492                         CHECK_TYPE (ins);
9493                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9494                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9495
9496                         /* FIXME: Pass opcode to is_inst_imm */
9497
9498                         /* Use the immediate opcodes if possible */
9499                         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)) {
9500                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9501                                 if (imm_opcode != -1) {
9502                                         ins->opcode = imm_opcode;
9503                                         if (sp [1]->opcode == OP_I8CONST) {
9504 #if SIZEOF_REGISTER == 8
9505                                                 ins->inst_imm = sp [1]->inst_l;
9506 #else
9507                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9508                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9509 #endif
9510                                         }
9511                                         else
9512                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9513                                         ins->sreg2 = -1;
9514
9515                                         /* Might be followed by an instruction added by add_widen_op */
9516                                         if (sp [1]->next == NULL)
9517                                                 NULLIFY_INS (sp [1]);
9518                                 }
9519                         }
9520                         MONO_ADD_INS ((cfg)->cbb, (ins));
9521
9522                         *sp++ = mono_decompose_opcode (cfg, ins);
9523                         ip++;
9524                         break;
9525                 case CEE_NEG:
9526                 case CEE_NOT:
9527                 case CEE_CONV_I1:
9528                 case CEE_CONV_I2:
9529                 case CEE_CONV_I4:
9530                 case CEE_CONV_R4:
9531                 case CEE_CONV_R8:
9532                 case CEE_CONV_U4:
9533                 case CEE_CONV_I8:
9534                 case CEE_CONV_U8:
9535                 case CEE_CONV_OVF_I8:
9536                 case CEE_CONV_OVF_U8:
9537                 case CEE_CONV_R_UN:
9538                         CHECK_STACK (1);
9539
9540                         /* Special case this earlier so we have long constants in the IR */
9541                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9542                                 int data = sp [-1]->inst_c0;
9543                                 sp [-1]->opcode = OP_I8CONST;
9544                                 sp [-1]->type = STACK_I8;
9545 #if SIZEOF_REGISTER == 8
9546                                 if ((*ip) == CEE_CONV_U8)
9547                                         sp [-1]->inst_c0 = (guint32)data;
9548                                 else
9549                                         sp [-1]->inst_c0 = data;
9550 #else
9551                                 sp [-1]->inst_ls_word = data;
9552                                 if ((*ip) == CEE_CONV_U8)
9553                                         sp [-1]->inst_ms_word = 0;
9554                                 else
9555                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9556 #endif
9557                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9558                         }
9559                         else {
9560                                 ADD_UNOP (*ip);
9561                         }
9562                         ip++;
9563                         break;
9564                 case CEE_CONV_OVF_I4:
9565                 case CEE_CONV_OVF_I1:
9566                 case CEE_CONV_OVF_I2:
9567                 case CEE_CONV_OVF_I:
9568                 case CEE_CONV_OVF_U:
9569                         CHECK_STACK (1);
9570
9571                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9572                                 ADD_UNOP (CEE_CONV_OVF_I8);
9573                                 ADD_UNOP (*ip);
9574                         } else {
9575                                 ADD_UNOP (*ip);
9576                         }
9577                         ip++;
9578                         break;
9579                 case CEE_CONV_OVF_U1:
9580                 case CEE_CONV_OVF_U2:
9581                 case CEE_CONV_OVF_U4:
9582                         CHECK_STACK (1);
9583
9584                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9585                                 ADD_UNOP (CEE_CONV_OVF_U8);
9586                                 ADD_UNOP (*ip);
9587                         } else {
9588                                 ADD_UNOP (*ip);
9589                         }
9590                         ip++;
9591                         break;
9592                 case CEE_CONV_OVF_I1_UN:
9593                 case CEE_CONV_OVF_I2_UN:
9594                 case CEE_CONV_OVF_I4_UN:
9595                 case CEE_CONV_OVF_I8_UN:
9596                 case CEE_CONV_OVF_U1_UN:
9597                 case CEE_CONV_OVF_U2_UN:
9598                 case CEE_CONV_OVF_U4_UN:
9599                 case CEE_CONV_OVF_U8_UN:
9600                 case CEE_CONV_OVF_I_UN:
9601                 case CEE_CONV_OVF_U_UN:
9602                 case CEE_CONV_U2:
9603                 case CEE_CONV_U1:
9604                 case CEE_CONV_I:
9605                 case CEE_CONV_U:
9606                         CHECK_STACK (1);
9607                         ADD_UNOP (*ip);
9608                         CHECK_CFG_EXCEPTION;
9609                         ip++;
9610                         break;
9611                 case CEE_ADD_OVF:
9612                 case CEE_ADD_OVF_UN:
9613                 case CEE_MUL_OVF:
9614                 case CEE_MUL_OVF_UN:
9615                 case CEE_SUB_OVF:
9616                 case CEE_SUB_OVF_UN:
9617                         CHECK_STACK (2);
9618                         ADD_BINOP (*ip);
9619                         ip++;
9620                         break;
9621                 case CEE_CPOBJ:
9622                         GSHAREDVT_FAILURE (*ip);
9623                         CHECK_OPSIZE (5);
9624                         CHECK_STACK (2);
9625                         token = read32 (ip + 1);
9626                         klass = mini_get_class (method, token, generic_context);
9627                         CHECK_TYPELOAD (klass);
9628                         sp -= 2;
9629                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9630                         ins_flag = 0;
9631                         ip += 5;
9632                         break;
9633                 case CEE_LDOBJ: {
9634                         int loc_index = -1;
9635                         int stloc_len = 0;
9636
9637                         CHECK_OPSIZE (5);
9638                         CHECK_STACK (1);
9639                         --sp;
9640                         token = read32 (ip + 1);
9641                         klass = mini_get_class (method, token, generic_context);
9642                         CHECK_TYPELOAD (klass);
9643
9644                         /* Optimize the common ldobj+stloc combination */
9645                         switch (ip [5]) {
9646                         case CEE_STLOC_S:
9647                                 loc_index = ip [6];
9648                                 stloc_len = 2;
9649                                 break;
9650                         case CEE_STLOC_0:
9651                         case CEE_STLOC_1:
9652                         case CEE_STLOC_2:
9653                         case CEE_STLOC_3:
9654                                 loc_index = ip [5] - CEE_STLOC_0;
9655                                 stloc_len = 1;
9656                                 break;
9657                         default:
9658                                 break;
9659                         }
9660
9661                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9662                                 CHECK_LOCAL (loc_index);
9663
9664                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9665                                 ins->dreg = cfg->locals [loc_index]->dreg;
9666                                 ins->flags |= ins_flag;
9667                                 ip += 5;
9668                                 ip += stloc_len;
9669                                 if (ins_flag & MONO_INST_VOLATILE) {
9670                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9671                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9672                                 }
9673                                 ins_flag = 0;
9674                                 break;
9675                         }
9676
9677                         /* Optimize the ldobj+stobj combination */
9678                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9679                                 CHECK_STACK (1);
9680
9681                                 sp --;
9682
9683                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9684
9685                                 ip += 5 + 5;
9686                                 ins_flag = 0;
9687                                 break;
9688                         }
9689
9690                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9691                         *sp++ = ins;
9692
9693                         ip += 5;
9694                         ins_flag = 0;
9695                         inline_costs += 1;
9696                         break;
9697                 }
9698                 case CEE_LDSTR:
9699                         CHECK_STACK_OVF (1);
9700                         CHECK_OPSIZE (5);
9701                         n = read32 (ip + 1);
9702
9703                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9704                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9705                                 ins->type = STACK_OBJ;
9706                                 *sp = ins;
9707                         }
9708                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9709                                 MonoInst *iargs [1];
9710                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9711
9712                                 if (cfg->compile_aot)
9713                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9714                                 else
9715                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9716                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9717                         } else {
9718                                 if (cfg->opt & MONO_OPT_SHARED) {
9719                                         MonoInst *iargs [3];
9720
9721                                         if (cfg->compile_aot) {
9722                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9723                                         }
9724                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9725                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9726                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9727                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9728                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9729                                         CHECK_CFG_ERROR;
9730                                 } else {
9731                                         if (cfg->cbb->out_of_line) {
9732                                                 MonoInst *iargs [2];
9733
9734                                                 if (image == mono_defaults.corlib) {
9735                                                         /*
9736                                                          * Avoid relocations in AOT and save some space by using a
9737                                                          * version of helper_ldstr specialized to mscorlib.
9738                                                          */
9739                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9740                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9741                                                 } else {
9742                                                         /* Avoid creating the string object */
9743                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9744                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9745                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9746                                                 }
9747                                         }
9748                                         else
9749                                         if (cfg->compile_aot) {
9750                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9751                                                 *sp = ins;
9752                                                 MONO_ADD_INS (cfg->cbb, ins);
9753                                         }
9754                                         else {
9755                                                 NEW_PCONST (cfg, ins, NULL);
9756                                                 ins->type = STACK_OBJ;
9757                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9758                                                 CHECK_CFG_ERROR;
9759
9760                                                 if (!ins->inst_p0)
9761                                                         OUT_OF_MEMORY_FAILURE;
9762
9763                                                 *sp = ins;
9764                                                 MONO_ADD_INS (cfg->cbb, ins);
9765                                         }
9766                                 }
9767                         }
9768
9769                         sp++;
9770                         ip += 5;
9771                         break;
9772                 case CEE_NEWOBJ: {
9773                         MonoInst *iargs [2];
9774                         MonoMethodSignature *fsig;
9775                         MonoInst this_ins;
9776                         MonoInst *alloc;
9777                         MonoInst *vtable_arg = NULL;
9778
9779                         CHECK_OPSIZE (5);
9780                         token = read32 (ip + 1);
9781                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9782                         CHECK_CFG_ERROR;
9783
9784                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9785                         CHECK_CFG_ERROR;
9786
9787                         mono_save_token_info (cfg, image, token, cmethod);
9788
9789                         if (!mono_class_init (cmethod->klass))
9790                                 TYPE_LOAD_ERROR (cmethod->klass);
9791
9792                         context_used = mini_method_check_context_used (cfg, cmethod);
9793
9794                         if (!dont_verify && !cfg->skip_visibility) {
9795                                 MonoMethod *cil_method = cmethod;
9796                                 MonoMethod *target_method = cil_method;
9797
9798                                 if (method->is_inflated) {
9799                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9800                                         CHECK_CFG_ERROR;
9801                                 }
9802
9803                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9804                                         !mono_method_can_access_method (method, cil_method))
9805                                         emit_method_access_failure (cfg, method, cil_method);
9806                         }
9807
9808                         if (mono_security_core_clr_enabled ())
9809                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9810
9811                         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)) {
9812                                 emit_class_init (cfg, cmethod->klass);
9813                                 CHECK_TYPELOAD (cmethod->klass);
9814                         }
9815
9816                         /*
9817                         if (cfg->gsharedvt) {
9818                                 if (mini_is_gsharedvt_variable_signature (sig))
9819                                         GSHAREDVT_FAILURE (*ip);
9820                         }
9821                         */
9822
9823                         n = fsig->param_count;
9824                         CHECK_STACK (n);
9825
9826                         /*
9827                          * Generate smaller code for the common newobj <exception> instruction in
9828                          * argument checking code.
9829                          */
9830                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9831                                 is_exception_class (cmethod->klass) && n <= 2 &&
9832                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9833                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9834                                 MonoInst *iargs [3];
9835
9836                                 sp -= n;
9837
9838                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9839                                 switch (n) {
9840                                 case 0:
9841                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9842                                         break;
9843                                 case 1:
9844                                         iargs [1] = sp [0];
9845                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9846                                         break;
9847                                 case 2:
9848                                         iargs [1] = sp [0];
9849                                         iargs [2] = sp [1];
9850                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9851                                         break;
9852                                 default:
9853                                         g_assert_not_reached ();
9854                                 }
9855
9856                                 ip += 5;
9857                                 inline_costs += 5;
9858                                 break;
9859                         }
9860
9861                         /* move the args to allow room for 'this' in the first position */
9862                         while (n--) {
9863                                 --sp;
9864                                 sp [1] = sp [0];
9865                         }
9866
9867                         /* check_call_signature () requires sp[0] to be set */
9868                         this_ins.type = STACK_OBJ;
9869                         sp [0] = &this_ins;
9870                         if (check_call_signature (cfg, fsig, sp))
9871                                 UNVERIFIED;
9872
9873                         iargs [0] = NULL;
9874
9875                         if (mini_class_is_system_array (cmethod->klass)) {
9876                                 *sp = emit_get_rgctx_method (cfg, context_used,
9877                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9878
9879                                 /* Avoid varargs in the common case */
9880                                 if (fsig->param_count == 1)
9881                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9882                                 else if (fsig->param_count == 2)
9883                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9884                                 else if (fsig->param_count == 3)
9885                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9886                                 else if (fsig->param_count == 4)
9887                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9888                                 else
9889                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9890                         } else if (cmethod->string_ctor) {
9891                                 g_assert (!context_used);
9892                                 g_assert (!vtable_arg);
9893                                 /* we simply pass a null pointer */
9894                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9895                                 /* now call the string ctor */
9896                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9897                         } else {
9898                                 if (cmethod->klass->valuetype) {
9899                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9900                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9901                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9902
9903                                         alloc = NULL;
9904
9905                                         /*
9906                                          * The code generated by mini_emit_virtual_call () expects
9907                                          * iargs [0] to be a boxed instance, but luckily the vcall
9908                                          * will be transformed into a normal call there.
9909                                          */
9910                                 } else if (context_used) {
9911                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9912                                         *sp = alloc;
9913                                 } else {
9914                                         MonoVTable *vtable = NULL;
9915
9916                                         if (!cfg->compile_aot)
9917                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9918                                         CHECK_TYPELOAD (cmethod->klass);
9919
9920                                         /*
9921                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9922                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9923                                          * As a workaround, we call class cctors before allocating objects.
9924                                          */
9925                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9926                                                 emit_class_init (cfg, cmethod->klass);
9927                                                 if (cfg->verbose_level > 2)
9928                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9929                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9930                                         }
9931
9932                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9933                                         *sp = alloc;
9934                                 }
9935                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9936
9937                                 if (alloc)
9938                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9939
9940                                 /* Now call the actual ctor */
9941                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
9942                                 CHECK_CFG_EXCEPTION;
9943                         }
9944
9945                         if (alloc == NULL) {
9946                                 /* Valuetype */
9947                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9948                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9949                                 *sp++= ins;
9950                         } else {
9951                                 *sp++ = alloc;
9952                         }
9953
9954                         ip += 5;
9955                         inline_costs += 5;
9956                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
9957                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9958                         break;
9959                 }
9960                 case CEE_CASTCLASS:
9961                 case CEE_ISINST: {
9962                         CHECK_STACK (1);
9963                         --sp;
9964                         CHECK_OPSIZE (5);
9965                         token = read32 (ip + 1);
9966                         klass = mini_get_class (method, token, generic_context);
9967                         CHECK_TYPELOAD (klass);
9968                         if (sp [0]->type != STACK_OBJ)
9969                                 UNVERIFIED;
9970
9971                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
9972                         ins->dreg = alloc_preg (cfg);
9973                         ins->sreg1 = (*sp)->dreg;
9974                         ins->klass = klass;
9975                         ins->type = STACK_OBJ;
9976                         MONO_ADD_INS (cfg->cbb, ins);
9977
9978                         CHECK_CFG_EXCEPTION;
9979                         *sp++ = ins;
9980                         ip += 5;
9981
9982                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
9983                         break;
9984                 }
9985                 case CEE_UNBOX_ANY: {
9986                         MonoInst *res, *addr;
9987
9988                         CHECK_STACK (1);
9989                         --sp;
9990                         CHECK_OPSIZE (5);
9991                         token = read32 (ip + 1);
9992                         klass = mini_get_class (method, token, generic_context);
9993                         CHECK_TYPELOAD (klass);
9994
9995                         mono_save_token_info (cfg, image, token, klass);
9996
9997                         context_used = mini_class_check_context_used (cfg, klass);
9998
9999                         if (mini_is_gsharedvt_klass (klass)) {
10000                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10001                                 inline_costs += 2;
10002                         } else if (generic_class_is_reference_type (cfg, klass)) {
10003                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10004                                         EMIT_NEW_PCONST (cfg, res, NULL);
10005                                         res->type = STACK_OBJ;
10006                                 } else {
10007                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10008                                         res->dreg = alloc_preg (cfg);
10009                                         res->sreg1 = (*sp)->dreg;
10010                                         res->klass = klass;
10011                                         res->type = STACK_OBJ;
10012                                         MONO_ADD_INS (cfg->cbb, res);
10013                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10014                                 }
10015                         } else if (mono_class_is_nullable (klass)) {
10016                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10017                         } else {
10018                                 addr = handle_unbox (cfg, klass, sp, context_used);
10019                                 /* LDOBJ */
10020                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10021                                 res = ins;
10022                                 inline_costs += 2;
10023                         }
10024
10025                         *sp ++ = res;
10026                         ip += 5;
10027                         break;
10028                 }
10029                 case CEE_BOX: {
10030                         MonoInst *val;
10031                         MonoClass *enum_class;
10032                         MonoMethod *has_flag;
10033
10034                         CHECK_STACK (1);
10035                         --sp;
10036                         val = *sp;
10037                         CHECK_OPSIZE (5);
10038                         token = read32 (ip + 1);
10039                         klass = mini_get_class (method, token, generic_context);
10040                         CHECK_TYPELOAD (klass);
10041
10042                         mono_save_token_info (cfg, image, token, klass);
10043
10044                         context_used = mini_class_check_context_used (cfg, klass);
10045
10046                         if (generic_class_is_reference_type (cfg, klass)) {
10047                                 *sp++ = val;
10048                                 ip += 5;
10049                                 break;
10050                         }
10051
10052                         if (klass == mono_defaults.void_class)
10053                                 UNVERIFIED;
10054                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10055                                 UNVERIFIED;
10056                         /* frequent check in generic code: box (struct), brtrue */
10057
10058                         /*
10059                          * Look for:
10060                          *
10061                          *   <push int/long ptr>
10062                          *   <push int/long>
10063                          *   box MyFlags
10064                          *   constrained. MyFlags
10065                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10066                          *
10067                          * If we find this sequence and the operand types on box and constrained
10068                          * are equal, we can emit a specialized instruction sequence instead of
10069                          * the very slow HasFlag () call.
10070                          */
10071                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10072                             /* Cheap checks first. */
10073                             ip + 5 + 6 + 5 < end &&
10074                             ip [5] == CEE_PREFIX1 &&
10075                             ip [6] == CEE_CONSTRAINED_ &&
10076                             ip [11] == CEE_CALLVIRT &&
10077                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10078                             mono_class_is_enum (klass) &&
10079                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10080                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10081                             has_flag->klass == mono_defaults.enum_class &&
10082                             !strcmp (has_flag->name, "HasFlag") &&
10083                             has_flag->signature->hasthis &&
10084                             has_flag->signature->param_count == 1) {
10085                                 CHECK_TYPELOAD (enum_class);
10086
10087                                 if (enum_class == klass) {
10088                                         MonoInst *enum_this, *enum_flag;
10089
10090                                         ip += 5 + 6 + 5;
10091                                         --sp;
10092
10093                                         enum_this = sp [0];
10094                                         enum_flag = sp [1];
10095
10096                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10097                                         break;
10098                                 }
10099                         }
10100
10101                         // FIXME: LLVM can't handle the inconsistent bb linking
10102                         if (!mono_class_is_nullable (klass) &&
10103                                 !mini_is_gsharedvt_klass (klass) &&
10104                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10105                                 (ip [5] == CEE_BRTRUE ||
10106                                  ip [5] == CEE_BRTRUE_S ||
10107                                  ip [5] == CEE_BRFALSE ||
10108                                  ip [5] == CEE_BRFALSE_S)) {
10109                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10110                                 int dreg;
10111                                 MonoBasicBlock *true_bb, *false_bb;
10112
10113                                 ip += 5;
10114
10115                                 if (cfg->verbose_level > 3) {
10116                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10117                                         printf ("<box+brtrue opt>\n");
10118                                 }
10119
10120                                 switch (*ip) {
10121                                 case CEE_BRTRUE_S:
10122                                 case CEE_BRFALSE_S:
10123                                         CHECK_OPSIZE (2);
10124                                         ip++;
10125                                         target = ip + 1 + (signed char)(*ip);
10126                                         ip++;
10127                                         break;
10128                                 case CEE_BRTRUE:
10129                                 case CEE_BRFALSE:
10130                                         CHECK_OPSIZE (5);
10131                                         ip++;
10132                                         target = ip + 4 + (gint)(read32 (ip));
10133                                         ip += 4;
10134                                         break;
10135                                 default:
10136                                         g_assert_not_reached ();
10137                                 }
10138
10139                                 /*
10140                                  * We need to link both bblocks, since it is needed for handling stack
10141                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10142                                  * Branching to only one of them would lead to inconsistencies, so
10143                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10144                                  */
10145                                 GET_BBLOCK (cfg, true_bb, target);
10146                                 GET_BBLOCK (cfg, false_bb, ip);
10147
10148                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10149                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10150
10151                                 if (sp != stack_start) {
10152                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10153                                         sp = stack_start;
10154                                         CHECK_UNVERIFIABLE (cfg);
10155                                 }
10156
10157                                 if (COMPILE_LLVM (cfg)) {
10158                                         dreg = alloc_ireg (cfg);
10159                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10160                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10161
10162                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10163                                 } else {
10164                                         /* The JIT can't eliminate the iconst+compare */
10165                                         MONO_INST_NEW (cfg, ins, OP_BR);
10166                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10167                                         MONO_ADD_INS (cfg->cbb, ins);
10168                                 }
10169
10170                                 start_new_bblock = 1;
10171                                 break;
10172                         }
10173
10174                         *sp++ = handle_box (cfg, val, klass, context_used);
10175
10176                         CHECK_CFG_EXCEPTION;
10177                         ip += 5;
10178                         inline_costs += 1;
10179                         break;
10180                 }
10181                 case CEE_UNBOX: {
10182                         CHECK_STACK (1);
10183                         --sp;
10184                         CHECK_OPSIZE (5);
10185                         token = read32 (ip + 1);
10186                         klass = mini_get_class (method, token, generic_context);
10187                         CHECK_TYPELOAD (klass);
10188
10189                         mono_save_token_info (cfg, image, token, klass);
10190
10191                         context_used = mini_class_check_context_used (cfg, klass);
10192
10193                         if (mono_class_is_nullable (klass)) {
10194                                 MonoInst *val;
10195
10196                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10197                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10198
10199                                 *sp++= ins;
10200                         } else {
10201                                 ins = handle_unbox (cfg, klass, sp, context_used);
10202                                 *sp++ = ins;
10203                         }
10204                         ip += 5;
10205                         inline_costs += 2;
10206                         break;
10207                 }
10208                 case CEE_LDFLD:
10209                 case CEE_LDFLDA:
10210                 case CEE_STFLD:
10211                 case CEE_LDSFLD:
10212                 case CEE_LDSFLDA:
10213                 case CEE_STSFLD: {
10214                         MonoClassField *field;
10215 #ifndef DISABLE_REMOTING
10216                         int costs;
10217 #endif
10218                         guint foffset;
10219                         gboolean is_instance;
10220                         int op;
10221                         gpointer addr = NULL;
10222                         gboolean is_special_static;
10223                         MonoType *ftype;
10224                         MonoInst *store_val = NULL;
10225                         MonoInst *thread_ins;
10226
10227                         op = *ip;
10228                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10229                         if (is_instance) {
10230                                 if (op == CEE_STFLD) {
10231                                         CHECK_STACK (2);
10232                                         sp -= 2;
10233                                         store_val = sp [1];
10234                                 } else {
10235                                         CHECK_STACK (1);
10236                                         --sp;
10237                                 }
10238                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10239                                         UNVERIFIED;
10240                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10241                                         UNVERIFIED;
10242                         } else {
10243                                 if (op == CEE_STSFLD) {
10244                                         CHECK_STACK (1);
10245                                         sp--;
10246                                         store_val = sp [0];
10247                                 }
10248                         }
10249
10250                         CHECK_OPSIZE (5);
10251                         token = read32 (ip + 1);
10252                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10253                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10254                                 klass = field->parent;
10255                         }
10256                         else {
10257                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10258                                 CHECK_CFG_ERROR;
10259                         }
10260                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10261                                 FIELD_ACCESS_FAILURE (method, field);
10262                         mono_class_init (klass);
10263
10264                         /* if the class is Critical then transparent code cannot access it's fields */
10265                         if (!is_instance && mono_security_core_clr_enabled ())
10266                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10267
10268                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10269                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10270                         if (mono_security_core_clr_enabled ())
10271                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10272                         */
10273
10274                         ftype = mono_field_get_type (field);
10275
10276                         /*
10277                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10278                          * the static case.
10279                          */
10280                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10281                                 switch (op) {
10282                                 case CEE_LDFLD:
10283                                         op = CEE_LDSFLD;
10284                                         break;
10285                                 case CEE_STFLD:
10286                                         op = CEE_STSFLD;
10287                                         break;
10288                                 case CEE_LDFLDA:
10289                                         op = CEE_LDSFLDA;
10290                                         break;
10291                                 default:
10292                                         g_assert_not_reached ();
10293                                 }
10294                                 is_instance = FALSE;
10295                         }
10296
10297                         context_used = mini_class_check_context_used (cfg, klass);
10298
10299                         /* INSTANCE CASE */
10300
10301                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10302                         if (op == CEE_STFLD) {
10303                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10304                                         UNVERIFIED;
10305 #ifndef DISABLE_REMOTING
10306                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10307                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10308                                         MonoInst *iargs [5];
10309
10310                                         GSHAREDVT_FAILURE (op);
10311
10312                                         iargs [0] = sp [0];
10313                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10314                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10315                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10316                                                     field->offset);
10317                                         iargs [4] = sp [1];
10318
10319                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10320                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10321                                                                                            iargs, ip, cfg->real_offset, TRUE);
10322                                                 CHECK_CFG_EXCEPTION;
10323                                                 g_assert (costs > 0);
10324
10325                                                 cfg->real_offset += 5;
10326
10327                                                 inline_costs += costs;
10328                                         } else {
10329                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10330                                         }
10331                                 } else
10332 #endif
10333                                 {
10334                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10335
10336                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10337
10338                                         if (ins_flag & MONO_INST_VOLATILE) {
10339                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10340                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10341                                         }
10342
10343                                         if (mini_is_gsharedvt_klass (klass)) {
10344                                                 MonoInst *offset_ins;
10345
10346                                                 context_used = mini_class_check_context_used (cfg, klass);
10347
10348                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10349                                                 /* The value is offset by 1 */
10350                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10351                                                 dreg = alloc_ireg_mp (cfg);
10352                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10353                                                 wbarrier_ptr_ins = ins;
10354                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10355                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10356                                         } else {
10357                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10358                                         }
10359                                         if (sp [0]->opcode != OP_LDADDR)
10360                                                 store->flags |= MONO_INST_FAULT;
10361
10362                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10363                                                 if (mini_is_gsharedvt_klass (klass)) {
10364                                                         g_assert (wbarrier_ptr_ins);
10365                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10366                                                 } else {
10367                                                         /* insert call to write barrier */
10368                                                         MonoInst *ptr;
10369                                                         int dreg;
10370
10371                                                         dreg = alloc_ireg_mp (cfg);
10372                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10373                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10374                                                 }
10375                                         }
10376
10377                                         store->flags |= ins_flag;
10378                                 }
10379                                 ins_flag = 0;
10380                                 ip += 5;
10381                                 break;
10382                         }
10383
10384 #ifndef DISABLE_REMOTING
10385                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10386                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10387                                 MonoInst *iargs [4];
10388
10389                                 GSHAREDVT_FAILURE (op);
10390
10391                                 iargs [0] = sp [0];
10392                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10393                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10394                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10395                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10396                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10397                                                                                    iargs, ip, cfg->real_offset, TRUE);
10398                                         CHECK_CFG_EXCEPTION;
10399                                         g_assert (costs > 0);
10400
10401                                         cfg->real_offset += 5;
10402
10403                                         *sp++ = iargs [0];
10404
10405                                         inline_costs += costs;
10406                                 } else {
10407                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10408                                         *sp++ = ins;
10409                                 }
10410                         } else
10411 #endif
10412                         if (is_instance) {
10413                                 if (sp [0]->type == STACK_VTYPE) {
10414                                         MonoInst *var;
10415
10416                                         /* Have to compute the address of the variable */
10417
10418                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10419                                         if (!var)
10420                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10421                                         else
10422                                                 g_assert (var->klass == klass);
10423
10424                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10425                                         sp [0] = ins;
10426                                 }
10427
10428                                 if (op == CEE_LDFLDA) {
10429                                         if (sp [0]->type == STACK_OBJ) {
10430                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10431                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10432                                         }
10433
10434                                         dreg = alloc_ireg_mp (cfg);
10435
10436                                         if (mini_is_gsharedvt_klass (klass)) {
10437                                                 MonoInst *offset_ins;
10438
10439                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10440                                                 /* The value is offset by 1 */
10441                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10442                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10443                                         } else {
10444                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10445                                         }
10446                                         ins->klass = mono_class_from_mono_type (field->type);
10447                                         ins->type = STACK_MP;
10448                                         *sp++ = ins;
10449                                 } else {
10450                                         MonoInst *load;
10451
10452                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10453
10454                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10455                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10456                                                 if (ins) {
10457                                                         *sp++ = ins;
10458                                                         ins_flag = 0;
10459                                                         ip += 5;
10460                                                         break;
10461                                                 }
10462                                         }
10463
10464                                         MonoInst *field_add_inst = sp [0];
10465                                         if (mini_is_gsharedvt_klass (klass)) {
10466                                                 MonoInst *offset_ins;
10467
10468                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10469                                                 /* The value is offset by 1 */
10470                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10471                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10472                                                 foffset = 0;
10473                                         }
10474
10475                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10476
10477                                         if (sp [0]->opcode != OP_LDADDR)
10478                                                 load->flags |= MONO_INST_FAULT;
10479                                         *sp++ = load;
10480                                 }
10481                         }
10482
10483                         if (is_instance) {
10484                                 ins_flag = 0;
10485                                 ip += 5;
10486                                 break;
10487                         }
10488
10489                         /* STATIC CASE */
10490                         context_used = mini_class_check_context_used (cfg, klass);
10491
10492                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10493                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10494                                 CHECK_CFG_ERROR;
10495                         }
10496
10497                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10498                          * to be called here.
10499                          */
10500                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10501                                 mono_class_vtable (cfg->domain, klass);
10502                                 CHECK_TYPELOAD (klass);
10503                         }
10504                         mono_domain_lock (cfg->domain);
10505                         if (cfg->domain->special_static_fields)
10506                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10507                         mono_domain_unlock (cfg->domain);
10508
10509                         is_special_static = mono_class_field_is_special_static (field);
10510
10511                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10512                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10513                         else
10514                                 thread_ins = NULL;
10515
10516                         /* Generate IR to compute the field address */
10517                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10518                                 /*
10519                                  * Fast access to TLS data
10520                                  * Inline version of get_thread_static_data () in
10521                                  * threads.c.
10522                                  */
10523                                 guint32 offset;
10524                                 int idx, static_data_reg, array_reg, dreg;
10525
10526                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10527                                         GSHAREDVT_FAILURE (op);
10528
10529                                 static_data_reg = alloc_ireg (cfg);
10530                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10531
10532                                 if (cfg->compile_aot) {
10533                                         int offset_reg, offset2_reg, idx_reg;
10534
10535                                         /* For TLS variables, this will return the TLS offset */
10536                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10537                                         offset_reg = ins->dreg;
10538                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10539                                         idx_reg = alloc_ireg (cfg);
10540                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10541                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10542                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10543                                         array_reg = alloc_ireg (cfg);
10544                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10545                                         offset2_reg = alloc_ireg (cfg);
10546                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10547                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10548                                         dreg = alloc_ireg (cfg);
10549                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10550                                 } else {
10551                                         offset = (gsize)addr & 0x7fffffff;
10552                                         idx = offset & 0x3f;
10553
10554                                         array_reg = alloc_ireg (cfg);
10555                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10556                                         dreg = alloc_ireg (cfg);
10557                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10558                                 }
10559                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10560                                         (cfg->compile_aot && is_special_static) ||
10561                                         (context_used && is_special_static)) {
10562                                 MonoInst *iargs [2];
10563
10564                                 g_assert (field->parent);
10565                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10566                                 if (context_used) {
10567                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10568                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10569                                 } else {
10570                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10571                                 }
10572                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10573                         } else if (context_used) {
10574                                 MonoInst *static_data;
10575
10576                                 /*
10577                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10578                                         method->klass->name_space, method->klass->name, method->name,
10579                                         depth, field->offset);
10580                                 */
10581
10582                                 if (mono_class_needs_cctor_run (klass, method))
10583                                         emit_class_init (cfg, klass);
10584
10585                                 /*
10586                                  * The pointer we're computing here is
10587                                  *
10588                                  *   super_info.static_data + field->offset
10589                                  */
10590                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10591                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10592
10593                                 if (mini_is_gsharedvt_klass (klass)) {
10594                                         MonoInst *offset_ins;
10595
10596                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10597                                         /* The value is offset by 1 */
10598                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10599                                         dreg = alloc_ireg_mp (cfg);
10600                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10601                                 } else if (field->offset == 0) {
10602                                         ins = static_data;
10603                                 } else {
10604                                         int addr_reg = mono_alloc_preg (cfg);
10605                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10606                                 }
10607                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10608                                 MonoInst *iargs [2];
10609
10610                                 g_assert (field->parent);
10611                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10612                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10613                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10614                         } else {
10615                                 MonoVTable *vtable = NULL;
10616
10617                                 if (!cfg->compile_aot)
10618                                         vtable = mono_class_vtable (cfg->domain, klass);
10619                                 CHECK_TYPELOAD (klass);
10620
10621                                 if (!addr) {
10622                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10623                                                 if (!(g_slist_find (class_inits, klass))) {
10624                                                         emit_class_init (cfg, klass);
10625                                                         if (cfg->verbose_level > 2)
10626                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10627                                                         class_inits = g_slist_prepend (class_inits, klass);
10628                                                 }
10629                                         } else {
10630                                                 if (cfg->run_cctors) {
10631                                                         /* This makes so that inline cannot trigger */
10632                                                         /* .cctors: too many apps depend on them */
10633                                                         /* running with a specific order... */
10634                                                         g_assert (vtable);
10635                                                         if (! vtable->initialized)
10636                                                                 INLINE_FAILURE ("class init");
10637                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10638                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10639                                                                 goto exception_exit;
10640                                                         }
10641                                                 }
10642                                         }
10643                                         if (cfg->compile_aot)
10644                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10645                                         else {
10646                                                 g_assert (vtable);
10647                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10648                                                 g_assert (addr);
10649                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10650                                         }
10651                                 } else {
10652                                         MonoInst *iargs [1];
10653                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10654                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10655                                 }
10656                         }
10657
10658                         /* Generate IR to do the actual load/store operation */
10659
10660                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10661                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10662                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10663                         }
10664
10665                         if (op == CEE_LDSFLDA) {
10666                                 ins->klass = mono_class_from_mono_type (ftype);
10667                                 ins->type = STACK_PTR;
10668                                 *sp++ = ins;
10669                         } else if (op == CEE_STSFLD) {
10670                                 MonoInst *store;
10671
10672                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10673                                 store->flags |= ins_flag;
10674                         } else {
10675                                 gboolean is_const = FALSE;
10676                                 MonoVTable *vtable = NULL;
10677                                 gpointer addr = NULL;
10678
10679                                 if (!context_used) {
10680                                         vtable = mono_class_vtable (cfg->domain, klass);
10681                                         CHECK_TYPELOAD (klass);
10682                                 }
10683                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10684                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10685                                         int ro_type = ftype->type;
10686                                         if (!addr)
10687                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10688                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10689                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10690                                         }
10691
10692                                         GSHAREDVT_FAILURE (op);
10693
10694                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10695                                         is_const = TRUE;
10696                                         switch (ro_type) {
10697                                         case MONO_TYPE_BOOLEAN:
10698                                         case MONO_TYPE_U1:
10699                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10700                                                 sp++;
10701                                                 break;
10702                                         case MONO_TYPE_I1:
10703                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10704                                                 sp++;
10705                                                 break;
10706                                         case MONO_TYPE_CHAR:
10707                                         case MONO_TYPE_U2:
10708                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10709                                                 sp++;
10710                                                 break;
10711                                         case MONO_TYPE_I2:
10712                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10713                                                 sp++;
10714                                                 break;
10715                                                 break;
10716                                         case MONO_TYPE_I4:
10717                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10718                                                 sp++;
10719                                                 break;
10720                                         case MONO_TYPE_U4:
10721                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10722                                                 sp++;
10723                                                 break;
10724                                         case MONO_TYPE_I:
10725                                         case MONO_TYPE_U:
10726                                         case MONO_TYPE_PTR:
10727                                         case MONO_TYPE_FNPTR:
10728                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10729                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10730                                                 sp++;
10731                                                 break;
10732                                         case MONO_TYPE_STRING:
10733                                         case MONO_TYPE_OBJECT:
10734                                         case MONO_TYPE_CLASS:
10735                                         case MONO_TYPE_SZARRAY:
10736                                         case MONO_TYPE_ARRAY:
10737                                                 if (!mono_gc_is_moving ()) {
10738                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10739                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10740                                                         sp++;
10741                                                 } else {
10742                                                         is_const = FALSE;
10743                                                 }
10744                                                 break;
10745                                         case MONO_TYPE_I8:
10746                                         case MONO_TYPE_U8:
10747                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10748                                                 sp++;
10749                                                 break;
10750                                         case MONO_TYPE_R4:
10751                                         case MONO_TYPE_R8:
10752                                         case MONO_TYPE_VALUETYPE:
10753                                         default:
10754                                                 is_const = FALSE;
10755                                                 break;
10756                                         }
10757                                 }
10758
10759                                 if (!is_const) {
10760                                         MonoInst *load;
10761
10762                                         CHECK_STACK_OVF (1);
10763
10764                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10765                                         load->flags |= ins_flag;
10766                                         ins_flag = 0;
10767                                         *sp++ = load;
10768                                 }
10769                         }
10770
10771                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10772                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10773                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10774                         }
10775
10776                         ins_flag = 0;
10777                         ip += 5;
10778                         break;
10779                 }
10780                 case CEE_STOBJ:
10781                         CHECK_STACK (2);
10782                         sp -= 2;
10783                         CHECK_OPSIZE (5);
10784                         token = read32 (ip + 1);
10785                         klass = mini_get_class (method, token, generic_context);
10786                         CHECK_TYPELOAD (klass);
10787
10788                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10789                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10790                         ins_flag = 0;
10791                         ip += 5;
10792                         inline_costs += 1;
10793                         break;
10794
10795                         /*
10796                          * Array opcodes
10797                          */
10798                 case CEE_NEWARR: {
10799                         MonoInst *len_ins;
10800                         const char *data_ptr;
10801                         int data_size = 0;
10802                         guint32 field_token;
10803
10804                         CHECK_STACK (1);
10805                         --sp;
10806
10807                         CHECK_OPSIZE (5);
10808                         token = read32 (ip + 1);
10809
10810                         klass = mini_get_class (method, token, generic_context);
10811                         CHECK_TYPELOAD (klass);
10812                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10813                                 UNVERIFIED;
10814
10815                         context_used = mini_class_check_context_used (cfg, klass);
10816
10817                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10818                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10819                                 ins->sreg1 = sp [0]->dreg;
10820                                 ins->type = STACK_I4;
10821                                 ins->dreg = alloc_ireg (cfg);
10822                                 MONO_ADD_INS (cfg->cbb, ins);
10823                                 *sp = mono_decompose_opcode (cfg, ins);
10824                         }
10825
10826                         if (context_used) {
10827                                 MonoInst *args [3];
10828                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10829                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10830
10831                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10832
10833                                 /* vtable */
10834                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10835                                         array_class, MONO_RGCTX_INFO_VTABLE);
10836                                 /* array len */
10837                                 args [1] = sp [0];
10838
10839                                 if (managed_alloc)
10840                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10841                                 else
10842                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10843                         } else {
10844                                 if (cfg->opt & MONO_OPT_SHARED) {
10845                                         /* Decompose now to avoid problems with references to the domainvar */
10846                                         MonoInst *iargs [3];
10847
10848                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10849                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10850                                         iargs [2] = sp [0];
10851
10852                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10853                                 } else {
10854                                         /* Decompose later since it is needed by abcrem */
10855                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10856                                         mono_class_vtable (cfg->domain, array_type);
10857                                         CHECK_TYPELOAD (array_type);
10858
10859                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10860                                         ins->dreg = alloc_ireg_ref (cfg);
10861                                         ins->sreg1 = sp [0]->dreg;
10862                                         ins->inst_newa_class = klass;
10863                                         ins->type = STACK_OBJ;
10864                                         ins->klass = array_type;
10865                                         MONO_ADD_INS (cfg->cbb, ins);
10866                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10867                                         cfg->cbb->has_array_access = TRUE;
10868
10869                                         /* Needed so mono_emit_load_get_addr () gets called */
10870                                         mono_get_got_var (cfg);
10871                                 }
10872                         }
10873
10874                         len_ins = sp [0];
10875                         ip += 5;
10876                         *sp++ = ins;
10877                         inline_costs += 1;
10878
10879                         /*
10880                          * we inline/optimize the initialization sequence if possible.
10881                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10882                          * for small sizes open code the memcpy
10883                          * ensure the rva field is big enough
10884                          */
10885                         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))) {
10886                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10887                                 MonoInst *iargs [3];
10888                                 int add_reg = alloc_ireg_mp (cfg);
10889
10890                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10891                                 if (cfg->compile_aot) {
10892                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10893                                 } else {
10894                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10895                                 }
10896                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10897                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10898                                 ip += 11;
10899                         }
10900
10901                         break;
10902                 }
10903                 case CEE_LDLEN:
10904                         CHECK_STACK (1);
10905                         --sp;
10906                         if (sp [0]->type != STACK_OBJ)
10907                                 UNVERIFIED;
10908
10909                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10910                         ins->dreg = alloc_preg (cfg);
10911                         ins->sreg1 = sp [0]->dreg;
10912                         ins->type = STACK_I4;
10913                         /* This flag will be inherited by the decomposition */
10914                         ins->flags |= MONO_INST_FAULT;
10915                         MONO_ADD_INS (cfg->cbb, ins);
10916                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10917                         cfg->cbb->has_array_access = TRUE;
10918                         ip ++;
10919                         *sp++ = ins;
10920                         break;
10921                 case CEE_LDELEMA:
10922                         CHECK_STACK (2);
10923                         sp -= 2;
10924                         CHECK_OPSIZE (5);
10925                         if (sp [0]->type != STACK_OBJ)
10926                                 UNVERIFIED;
10927
10928                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10929
10930                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10931                         CHECK_TYPELOAD (klass);
10932                         /* we need to make sure that this array is exactly the type it needs
10933                          * to be for correctness. the wrappers are lax with their usage
10934                          * so we need to ignore them here
10935                          */
10936                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10937                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10938                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10939                                 CHECK_TYPELOAD (array_class);
10940                         }
10941
10942                         readonly = FALSE;
10943                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10944                         *sp++ = ins;
10945                         ip += 5;
10946                         break;
10947                 case CEE_LDELEM:
10948                 case CEE_LDELEM_I1:
10949                 case CEE_LDELEM_U1:
10950                 case CEE_LDELEM_I2:
10951                 case CEE_LDELEM_U2:
10952                 case CEE_LDELEM_I4:
10953                 case CEE_LDELEM_U4:
10954                 case CEE_LDELEM_I8:
10955                 case CEE_LDELEM_I:
10956                 case CEE_LDELEM_R4:
10957                 case CEE_LDELEM_R8:
10958                 case CEE_LDELEM_REF: {
10959                         MonoInst *addr;
10960
10961                         CHECK_STACK (2);
10962                         sp -= 2;
10963
10964                         if (*ip == CEE_LDELEM) {
10965                                 CHECK_OPSIZE (5);
10966                                 token = read32 (ip + 1);
10967                                 klass = mini_get_class (method, token, generic_context);
10968                                 CHECK_TYPELOAD (klass);
10969                                 mono_class_init (klass);
10970                         }
10971                         else
10972                                 klass = array_access_to_klass (*ip);
10973
10974                         if (sp [0]->type != STACK_OBJ)
10975                                 UNVERIFIED;
10976
10977                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10978
10979                         if (mini_is_gsharedvt_variable_klass (klass)) {
10980                                 // FIXME-VT: OP_ICONST optimization
10981                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10982                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10983                                 ins->opcode = OP_LOADV_MEMBASE;
10984                         } else if (sp [1]->opcode == OP_ICONST) {
10985                                 int array_reg = sp [0]->dreg;
10986                                 int index_reg = sp [1]->dreg;
10987                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
10988
10989                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
10990                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
10991
10992                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
10993                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
10994                         } else {
10995                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10996                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10997                         }
10998                         *sp++ = ins;
10999                         if (*ip == CEE_LDELEM)
11000                                 ip += 5;
11001                         else
11002                                 ++ip;
11003                         break;
11004                 }
11005                 case CEE_STELEM_I:
11006                 case CEE_STELEM_I1:
11007                 case CEE_STELEM_I2:
11008                 case CEE_STELEM_I4:
11009                 case CEE_STELEM_I8:
11010                 case CEE_STELEM_R4:
11011                 case CEE_STELEM_R8:
11012                 case CEE_STELEM_REF:
11013                 case CEE_STELEM: {
11014                         CHECK_STACK (3);
11015                         sp -= 3;
11016
11017                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11018
11019                         if (*ip == CEE_STELEM) {
11020                                 CHECK_OPSIZE (5);
11021                                 token = read32 (ip + 1);
11022                                 klass = mini_get_class (method, token, generic_context);
11023                                 CHECK_TYPELOAD (klass);
11024                                 mono_class_init (klass);
11025                         }
11026                         else
11027                                 klass = array_access_to_klass (*ip);
11028
11029                         if (sp [0]->type != STACK_OBJ)
11030                                 UNVERIFIED;
11031
11032                         emit_array_store (cfg, klass, sp, TRUE);
11033
11034                         if (*ip == CEE_STELEM)
11035                                 ip += 5;
11036                         else
11037                                 ++ip;
11038                         inline_costs += 1;
11039                         break;
11040                 }
11041                 case CEE_CKFINITE: {
11042                         CHECK_STACK (1);
11043                         --sp;
11044
11045                         if (cfg->llvm_only) {
11046                                 MonoInst *iargs [1];
11047
11048                                 iargs [0] = sp [0];
11049                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11050                         } else  {
11051                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11052                                 ins->sreg1 = sp [0]->dreg;
11053                                 ins->dreg = alloc_freg (cfg);
11054                                 ins->type = STACK_R8;
11055                                 MONO_ADD_INS (cfg->cbb, ins);
11056
11057                                 *sp++ = mono_decompose_opcode (cfg, ins);
11058                         }
11059
11060                         ++ip;
11061                         break;
11062                 }
11063                 case CEE_REFANYVAL: {
11064                         MonoInst *src_var, *src;
11065
11066                         int klass_reg = alloc_preg (cfg);
11067                         int dreg = alloc_preg (cfg);
11068
11069                         GSHAREDVT_FAILURE (*ip);
11070
11071                         CHECK_STACK (1);
11072                         MONO_INST_NEW (cfg, ins, *ip);
11073                         --sp;
11074                         CHECK_OPSIZE (5);
11075                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11076                         CHECK_TYPELOAD (klass);
11077
11078                         context_used = mini_class_check_context_used (cfg, klass);
11079
11080                         // FIXME:
11081                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11082                         if (!src_var)
11083                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11084                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11085                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11086
11087                         if (context_used) {
11088                                 MonoInst *klass_ins;
11089
11090                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11091                                                 klass, MONO_RGCTX_INFO_KLASS);
11092
11093                                 // FIXME:
11094                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11095                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11096                         } else {
11097                                 mini_emit_class_check (cfg, klass_reg, klass);
11098                         }
11099                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11100                         ins->type = STACK_MP;
11101                         ins->klass = klass;
11102                         *sp++ = ins;
11103                         ip += 5;
11104                         break;
11105                 }
11106                 case CEE_MKREFANY: {
11107                         MonoInst *loc, *addr;
11108
11109                         GSHAREDVT_FAILURE (*ip);
11110
11111                         CHECK_STACK (1);
11112                         MONO_INST_NEW (cfg, ins, *ip);
11113                         --sp;
11114                         CHECK_OPSIZE (5);
11115                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11116                         CHECK_TYPELOAD (klass);
11117
11118                         context_used = mini_class_check_context_used (cfg, klass);
11119
11120                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11121                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11122
11123                         if (context_used) {
11124                                 MonoInst *const_ins;
11125                                 int type_reg = alloc_preg (cfg);
11126
11127                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11128                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11129                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11130                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11131                         } else {
11132                                 int const_reg = alloc_preg (cfg);
11133                                 int type_reg = alloc_preg (cfg);
11134
11135                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11136                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11137                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11138                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11139                         }
11140                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11141
11142                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11143                         ins->type = STACK_VTYPE;
11144                         ins->klass = mono_defaults.typed_reference_class;
11145                         *sp++ = ins;
11146                         ip += 5;
11147                         break;
11148                 }
11149                 case CEE_LDTOKEN: {
11150                         gpointer handle;
11151                         MonoClass *handle_class;
11152
11153                         CHECK_STACK_OVF (1);
11154
11155                         CHECK_OPSIZE (5);
11156                         n = read32 (ip + 1);
11157
11158                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11159                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11160                                 handle = mono_method_get_wrapper_data (method, n);
11161                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11162                                 if (handle_class == mono_defaults.typehandle_class)
11163                                         handle = &((MonoClass*)handle)->byval_arg;
11164                         }
11165                         else {
11166                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11167                                 CHECK_CFG_ERROR;
11168                         }
11169                         if (!handle)
11170                                 LOAD_ERROR;
11171                         mono_class_init (handle_class);
11172                         if (cfg->gshared) {
11173                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11174                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11175                                         /* This case handles ldtoken
11176                                            of an open type, like for
11177                                            typeof(Gen<>). */
11178                                         context_used = 0;
11179                                 } else if (handle_class == mono_defaults.typehandle_class) {
11180                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11181                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11182                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11183                                 else if (handle_class == mono_defaults.methodhandle_class)
11184                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11185                                 else
11186                                         g_assert_not_reached ();
11187                         }
11188
11189                         if ((cfg->opt & MONO_OPT_SHARED) &&
11190                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11191                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11192                                 MonoInst *addr, *vtvar, *iargs [3];
11193                                 int method_context_used;
11194
11195                                 method_context_used = mini_method_check_context_used (cfg, method);
11196
11197                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11198
11199                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11200                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11201                                 if (method_context_used) {
11202                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11203                                                 method, MONO_RGCTX_INFO_METHOD);
11204                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11205                                 } else {
11206                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11207                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11208                                 }
11209                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11210
11211                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11212
11213                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11214                         } else {
11215                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11216                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11217                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11218                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11219                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11220                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11221
11222                                         mono_class_init (tclass);
11223                                         if (context_used) {
11224                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11225                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11226                                         } else if (cfg->compile_aot) {
11227                                                 if (method->wrapper_type) {
11228                                                         error_init (&error); //got to do it since there are multiple conditionals below
11229                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11230                                                                 /* Special case for static synchronized wrappers */
11231                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11232                                                         } else {
11233                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11234                                                                 /* FIXME: n is not a normal token */
11235                                                                 DISABLE_AOT (cfg);
11236                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11237                                                         }
11238                                                 } else {
11239                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11240                                                 }
11241                                         } else {
11242                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11243                                                 CHECK_CFG_ERROR;
11244                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11245                                         }
11246                                         ins->type = STACK_OBJ;
11247                                         ins->klass = cmethod->klass;
11248                                         ip += 5;
11249                                 } else {
11250                                         MonoInst *addr, *vtvar;
11251
11252                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11253
11254                                         if (context_used) {
11255                                                 if (handle_class == mono_defaults.typehandle_class) {
11256                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11257                                                                         mono_class_from_mono_type ((MonoType *)handle),
11258                                                                         MONO_RGCTX_INFO_TYPE);
11259                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11260                                                         ins = emit_get_rgctx_method (cfg, context_used,
11261                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11262                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11263                                                         ins = emit_get_rgctx_field (cfg, context_used,
11264                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11265                                                 } else {
11266                                                         g_assert_not_reached ();
11267                                                 }
11268                                         } else if (cfg->compile_aot) {
11269                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11270                                         } else {
11271                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11272                                         }
11273                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11274                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11275                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11276                                 }
11277                         }
11278
11279                         *sp++ = ins;
11280                         ip += 5;
11281                         break;
11282                 }
11283                 case CEE_THROW:
11284                         CHECK_STACK (1);
11285                         if (sp [-1]->type != STACK_OBJ)
11286                                 UNVERIFIED;
11287
11288                         MONO_INST_NEW (cfg, ins, OP_THROW);
11289                         --sp;
11290                         ins->sreg1 = sp [0]->dreg;
11291                         ip++;
11292                         cfg->cbb->out_of_line = TRUE;
11293                         MONO_ADD_INS (cfg->cbb, ins);
11294                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11295                         MONO_ADD_INS (cfg->cbb, ins);
11296                         sp = stack_start;
11297
11298                         link_bblock (cfg, cfg->cbb, end_bblock);
11299                         start_new_bblock = 1;
11300                         /* This can complicate code generation for llvm since the return value might not be defined */
11301                         if (COMPILE_LLVM (cfg))
11302                                 INLINE_FAILURE ("throw");
11303                         break;
11304                 case CEE_ENDFINALLY:
11305                         if (!ip_in_finally_clause (cfg, ip - header->code))
11306                                 UNVERIFIED;
11307                         /* mono_save_seq_point_info () depends on this */
11308                         if (sp != stack_start)
11309                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11310                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11311                         MONO_ADD_INS (cfg->cbb, ins);
11312                         ip++;
11313                         start_new_bblock = 1;
11314
11315                         /*
11316                          * Control will leave the method so empty the stack, otherwise
11317                          * the next basic block will start with a nonempty stack.
11318                          */
11319                         while (sp != stack_start) {
11320                                 sp--;
11321                         }
11322                         break;
11323                 case CEE_LEAVE:
11324                 case CEE_LEAVE_S: {
11325                         GList *handlers;
11326
11327                         if (*ip == CEE_LEAVE) {
11328                                 CHECK_OPSIZE (5);
11329                                 target = ip + 5 + (gint32)read32(ip + 1);
11330                         } else {
11331                                 CHECK_OPSIZE (2);
11332                                 target = ip + 2 + (signed char)(ip [1]);
11333                         }
11334
11335                         /* empty the stack */
11336                         while (sp != stack_start) {
11337                                 sp--;
11338                         }
11339
11340                         /*
11341                          * If this leave statement is in a catch block, check for a
11342                          * pending exception, and rethrow it if necessary.
11343                          * We avoid doing this in runtime invoke wrappers, since those are called
11344                          * by native code which excepts the wrapper to catch all exceptions.
11345                          */
11346                         for (i = 0; i < header->num_clauses; ++i) {
11347                                 MonoExceptionClause *clause = &header->clauses [i];
11348
11349                                 /*
11350                                  * Use <= in the final comparison to handle clauses with multiple
11351                                  * leave statements, like in bug #78024.
11352                                  * The ordering of the exception clauses guarantees that we find the
11353                                  * innermost clause.
11354                                  */
11355                                 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) {
11356                                         MonoInst *exc_ins;
11357                                         MonoBasicBlock *dont_throw;
11358
11359                                         /*
11360                                           MonoInst *load;
11361
11362                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11363                                         */
11364
11365                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11366
11367                                         NEW_BBLOCK (cfg, dont_throw);
11368
11369                                         /*
11370                                          * Currently, we always rethrow the abort exception, despite the
11371                                          * fact that this is not correct. See thread6.cs for an example.
11372                                          * But propagating the abort exception is more important than
11373                                          * getting the sematics right.
11374                                          */
11375                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11376                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11377                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11378
11379                                         MONO_START_BB (cfg, dont_throw);
11380                                 }
11381                         }
11382
11383 #ifdef ENABLE_LLVM
11384                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11385 #endif
11386
11387                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11388                                 GList *tmp;
11389
11390                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11391                                         MonoExceptionClause *clause = (MonoExceptionClause *)tmp->data;
11392                                         MonoInst *abort_exc = (MonoInst *)mono_find_exvar_for_offset (cfg, clause->handler_offset);
11393                                         MonoBasicBlock *dont_throw;
11394
11395                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11396                                         g_assert (tblock);
11397                                         link_bblock (cfg, cfg->cbb, tblock);
11398
11399                                         MONO_EMIT_NEW_PCONST (cfg, abort_exc->dreg, 0);
11400
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
11407                                         /* Throw exception if exvar is set */
11408                                         /* FIXME Do we need this for calls from catch/filter ? */
11409                                         NEW_BBLOCK (cfg, dont_throw);
11410                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, abort_exc->dreg, 0);
11411                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11412                                         mono_emit_jit_icall (cfg, mono_thread_self_abort, NULL);
11413                                         cfg->cbb->clause_hole = clause;
11414
11415                                         MONO_START_BB (cfg, dont_throw);
11416                                         cfg->cbb->clause_hole = clause;
11417
11418                                         if (COMPILE_LLVM (cfg)) {
11419                                                 MonoBasicBlock *target_bb;
11420
11421                                                 /*
11422                                                  * Link the finally bblock with the target, since it will
11423                                                  * conceptually branch there.
11424                                                  */
11425                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11426                                                 GET_BBLOCK (cfg, target_bb, target);
11427                                                 link_bblock (cfg, tblock, target_bb);
11428                                         }
11429                                 }
11430                                 g_list_free (handlers);
11431                         }
11432
11433                         MONO_INST_NEW (cfg, ins, OP_BR);
11434                         MONO_ADD_INS (cfg->cbb, ins);
11435                         GET_BBLOCK (cfg, tblock, target);
11436                         link_bblock (cfg, cfg->cbb, tblock);
11437                         ins->inst_target_bb = tblock;
11438
11439                         start_new_bblock = 1;
11440
11441                         if (*ip == CEE_LEAVE)
11442                                 ip += 5;
11443                         else
11444                                 ip += 2;
11445
11446                         break;
11447                 }
11448
11449                         /*
11450                          * Mono specific opcodes
11451                          */
11452                 case MONO_CUSTOM_PREFIX: {
11453
11454                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11455
11456                         CHECK_OPSIZE (2);
11457                         switch (ip [1]) {
11458                         case CEE_MONO_ICALL: {
11459                                 gpointer func;
11460                                 MonoJitICallInfo *info;
11461
11462                                 token = read32 (ip + 2);
11463                                 func = mono_method_get_wrapper_data (method, token);
11464                                 info = mono_find_jit_icall_by_addr (func);
11465                                 if (!info)
11466                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11467                                 g_assert (info);
11468
11469                                 CHECK_STACK (info->sig->param_count);
11470                                 sp -= info->sig->param_count;
11471
11472                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11473                                         MonoInst *addr;
11474
11475                                         /*
11476                                          * This is called on unattached threads, so it cannot go through the trampoline
11477                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11478                                          * instead.
11479                                          */
11480                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11481                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11482                                 } else {
11483                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11484                                 }
11485
11486                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11487                                         *sp++ = ins;
11488
11489                                 ip += 6;
11490                                 inline_costs += 10 * num_calls++;
11491
11492                                 break;
11493                         }
11494                         case CEE_MONO_LDPTR_CARD_TABLE:
11495                         case CEE_MONO_LDPTR_NURSERY_START:
11496                         case CEE_MONO_LDPTR_NURSERY_BITS:
11497                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
11498                         case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT: {
11499                                 CHECK_STACK_OVF (1);
11500
11501                                 switch (ip [1]) {
11502                                 case CEE_MONO_LDPTR_CARD_TABLE:
11503                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11504                                         break;
11505                                 case CEE_MONO_LDPTR_NURSERY_START:
11506                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11507                                         break;
11508                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11509                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11510                                         break;
11511                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11512                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11513                                         break;
11514                                 case CEE_MONO_LDPTR_PROFILER_ALLOCATION_COUNT:
11515                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_PROFILER_ALLOCATION_COUNT, NULL);
11516                                         break;
11517                                 default:
11518                                         g_assert_not_reached ();
11519                                         break;
11520                                 }
11521
11522                                 *sp++ = ins;
11523                                 ip += 2;
11524                                 inline_costs += 10 * num_calls++;
11525                                 break;
11526                         }
11527                         case CEE_MONO_LDPTR: {
11528                                 gpointer ptr;
11529
11530                                 CHECK_STACK_OVF (1);
11531                                 CHECK_OPSIZE (6);
11532                                 token = read32 (ip + 2);
11533
11534                                 ptr = mono_method_get_wrapper_data (method, token);
11535                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11536                                 *sp++ = ins;
11537                                 ip += 6;
11538                                 inline_costs += 10 * num_calls++;
11539                                 /* Can't embed random pointers into AOT code */
11540                                 DISABLE_AOT (cfg);
11541                                 break;
11542                         }
11543                         case CEE_MONO_JIT_ICALL_ADDR: {
11544                                 MonoJitICallInfo *callinfo;
11545                                 gpointer ptr;
11546
11547                                 CHECK_STACK_OVF (1);
11548                                 CHECK_OPSIZE (6);
11549                                 token = read32 (ip + 2);
11550
11551                                 ptr = mono_method_get_wrapper_data (method, token);
11552                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11553                                 g_assert (callinfo);
11554                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11555                                 *sp++ = ins;
11556                                 ip += 6;
11557                                 inline_costs += 10 * num_calls++;
11558                                 break;
11559                         }
11560                         case CEE_MONO_ICALL_ADDR: {
11561                                 MonoMethod *cmethod;
11562                                 gpointer ptr;
11563
11564                                 CHECK_STACK_OVF (1);
11565                                 CHECK_OPSIZE (6);
11566                                 token = read32 (ip + 2);
11567
11568                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11569
11570                                 if (cfg->compile_aot) {
11571                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11572                                                 /*
11573                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11574                                                  * before the call, its not needed when using direct pinvoke.
11575                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11576                                                  * on platforms which don't support dlopen ().
11577                                                  */
11578                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11579                                         } else {
11580                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11581                                         }
11582                                 } else {
11583                                         ptr = mono_lookup_internal_call (cmethod);
11584                                         g_assert (ptr);
11585                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11586                                 }
11587                                 *sp++ = ins;
11588                                 ip += 6;
11589                                 break;
11590                         }
11591                         case CEE_MONO_VTADDR: {
11592                                 MonoInst *src_var, *src;
11593
11594                                 CHECK_STACK (1);
11595                                 --sp;
11596
11597                                 // FIXME:
11598                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11599                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11600                                 *sp++ = src;
11601                                 ip += 2;
11602                                 break;
11603                         }
11604                         case CEE_MONO_NEWOBJ: {
11605                                 MonoInst *iargs [2];
11606
11607                                 CHECK_STACK_OVF (1);
11608                                 CHECK_OPSIZE (6);
11609                                 token = read32 (ip + 2);
11610                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11611                                 mono_class_init (klass);
11612                                 NEW_DOMAINCONST (cfg, iargs [0]);
11613                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11614                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11615                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11616                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11617                                 ip += 6;
11618                                 inline_costs += 10 * num_calls++;
11619                                 break;
11620                         }
11621                         case CEE_MONO_OBJADDR:
11622                                 CHECK_STACK (1);
11623                                 --sp;
11624                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11625                                 ins->dreg = alloc_ireg_mp (cfg);
11626                                 ins->sreg1 = sp [0]->dreg;
11627                                 ins->type = STACK_MP;
11628                                 MONO_ADD_INS (cfg->cbb, ins);
11629                                 *sp++ = ins;
11630                                 ip += 2;
11631                                 break;
11632                         case CEE_MONO_LDNATIVEOBJ:
11633                                 /*
11634                                  * Similar to LDOBJ, but instead load the unmanaged
11635                                  * representation of the vtype to the stack.
11636                                  */
11637                                 CHECK_STACK (1);
11638                                 CHECK_OPSIZE (6);
11639                                 --sp;
11640                                 token = read32 (ip + 2);
11641                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11642                                 g_assert (klass->valuetype);
11643                                 mono_class_init (klass);
11644
11645                                 {
11646                                         MonoInst *src, *dest, *temp;
11647
11648                                         src = sp [0];
11649                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11650                                         temp->backend.is_pinvoke = 1;
11651                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11652                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11653
11654                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11655                                         dest->type = STACK_VTYPE;
11656                                         dest->klass = klass;
11657
11658                                         *sp ++ = dest;
11659                                         ip += 6;
11660                                 }
11661                                 break;
11662                         case CEE_MONO_RETOBJ: {
11663                                 /*
11664                                  * Same as RET, but return the native representation of a vtype
11665                                  * to the caller.
11666                                  */
11667                                 g_assert (cfg->ret);
11668                                 g_assert (mono_method_signature (method)->pinvoke);
11669                                 CHECK_STACK (1);
11670                                 --sp;
11671
11672                                 CHECK_OPSIZE (6);
11673                                 token = read32 (ip + 2);
11674                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11675
11676                                 if (!cfg->vret_addr) {
11677                                         g_assert (cfg->ret_var_is_local);
11678
11679                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11680                                 } else {
11681                                         EMIT_NEW_RETLOADA (cfg, ins);
11682                                 }
11683                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11684
11685                                 if (sp != stack_start)
11686                                         UNVERIFIED;
11687
11688                                 MONO_INST_NEW (cfg, ins, OP_BR);
11689                                 ins->inst_target_bb = end_bblock;
11690                                 MONO_ADD_INS (cfg->cbb, ins);
11691                                 link_bblock (cfg, cfg->cbb, end_bblock);
11692                                 start_new_bblock = 1;
11693                                 ip += 6;
11694                                 break;
11695                         }
11696                         case CEE_MONO_SAVE_LMF:
11697                         case CEE_MONO_RESTORE_LMF:
11698                                 ip += 2;
11699                                 break;
11700                         case CEE_MONO_CLASSCONST:
11701                                 CHECK_STACK_OVF (1);
11702                                 CHECK_OPSIZE (6);
11703                                 token = read32 (ip + 2);
11704                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11705                                 *sp++ = ins;
11706                                 ip += 6;
11707                                 inline_costs += 10 * num_calls++;
11708                                 break;
11709                         case CEE_MONO_NOT_TAKEN:
11710                                 cfg->cbb->out_of_line = TRUE;
11711                                 ip += 2;
11712                                 break;
11713                         case CEE_MONO_TLS: {
11714                                 MonoTlsKey key;
11715
11716                                 CHECK_STACK_OVF (1);
11717                                 CHECK_OPSIZE (6);
11718                                 key = (MonoTlsKey)read32 (ip + 2);
11719                                 g_assert (key < TLS_KEY_NUM);
11720
11721                                 ins = mono_create_tls_get (cfg, key);
11722                                 g_assert (ins);
11723                                 ins->type = STACK_PTR;
11724                                 *sp++ = ins;
11725                                 ip += 6;
11726                                 break;
11727                         }
11728                         case CEE_MONO_DYN_CALL: {
11729                                 MonoCallInst *call;
11730
11731                                 /* It would be easier to call a trampoline, but that would put an
11732                                  * extra frame on the stack, confusing exception handling. So
11733                                  * implement it inline using an opcode for now.
11734                                  */
11735
11736                                 if (!cfg->dyn_call_var) {
11737                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11738                                         /* prevent it from being register allocated */
11739                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11740                                 }
11741
11742                                 /* Has to use a call inst since it local regalloc expects it */
11743                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11744                                 ins = (MonoInst*)call;
11745                                 sp -= 2;
11746                                 ins->sreg1 = sp [0]->dreg;
11747                                 ins->sreg2 = sp [1]->dreg;
11748                                 MONO_ADD_INS (cfg->cbb, ins);
11749
11750                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11751
11752                                 ip += 2;
11753                                 inline_costs += 10 * num_calls++;
11754
11755                                 break;
11756                         }
11757                         case CEE_MONO_MEMORY_BARRIER: {
11758                                 CHECK_OPSIZE (6);
11759                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11760                                 ip += 6;
11761                                 break;
11762                         }
11763                         case CEE_MONO_ATOMIC_STORE_I4: {
11764                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11765
11766                                 CHECK_OPSIZE (6);
11767                                 CHECK_STACK (2);
11768                                 sp -= 2;
11769
11770                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11771                                 ins->dreg = sp [0]->dreg;
11772                                 ins->sreg1 = sp [1]->dreg;
11773                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11774                                 MONO_ADD_INS (cfg->cbb, ins);
11775
11776                                 ip += 6;
11777                                 break;
11778                         }
11779                         case CEE_MONO_JIT_ATTACH: {
11780                                 MonoInst *args [16], *domain_ins;
11781                                 MonoInst *ad_ins, *jit_tls_ins;
11782                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11783
11784                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11785
11786                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11787
11788                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11789                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11790
11791                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11792                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11793
11794                                 if (ad_ins && jit_tls_ins) {
11795                                         NEW_BBLOCK (cfg, next_bb);
11796                                         NEW_BBLOCK (cfg, call_bb);
11797
11798                                         if (cfg->compile_aot) {
11799                                                 /* AOT code is only used in the root domain */
11800                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11801                                         } else {
11802                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11803                                         }
11804                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11805                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11806
11807                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11808                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11809
11810                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11811                                         MONO_START_BB (cfg, call_bb);
11812                                 }
11813
11814                                 /* AOT code is only used in the root domain */
11815                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11816                                 if (cfg->compile_aot) {
11817                                         MonoInst *addr;
11818
11819                                         /*
11820                                          * This is called on unattached threads, so it cannot go through the trampoline
11821                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11822                                          * instead.
11823                                          */
11824                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11825                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11826                                 } else {
11827                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11828                                 }
11829                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11830
11831                                 if (next_bb)
11832                                         MONO_START_BB (cfg, next_bb);
11833
11834                                 ip += 2;
11835                                 break;
11836                         }
11837                         case CEE_MONO_JIT_DETACH: {
11838                                 MonoInst *args [16];
11839
11840                                 /* Restore the original domain */
11841                                 dreg = alloc_ireg (cfg);
11842                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11843                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11844                                 ip += 2;
11845                                 break;
11846                         }
11847                         case CEE_MONO_CALLI_EXTRA_ARG: {
11848                                 MonoInst *addr;
11849                                 MonoMethodSignature *fsig;
11850                                 MonoInst *arg;
11851
11852                                 /*
11853                                  * This is the same as CEE_CALLI, but passes an additional argument
11854                                  * to the called method in llvmonly mode.
11855                                  * This is only used by delegate invoke wrappers to call the
11856                                  * actual delegate method.
11857                                  */
11858                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11859
11860                                 CHECK_OPSIZE (6);
11861                                 token = read32 (ip + 2);
11862
11863                                 ins = NULL;
11864
11865                                 cmethod = NULL;
11866                                 CHECK_STACK (1);
11867                                 --sp;
11868                                 addr = *sp;
11869                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11870                                 CHECK_CFG_ERROR;
11871
11872                                 if (cfg->llvm_only)
11873                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11874
11875                                 n = fsig->param_count + fsig->hasthis + 1;
11876
11877                                 CHECK_STACK (n);
11878
11879                                 sp -= n;
11880                                 arg = sp [n - 1];
11881
11882                                 if (cfg->llvm_only) {
11883                                         /*
11884                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11885                                          * cconv. This is set by mono_init_delegate ().
11886                                          */
11887                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11888                                                 MonoInst *callee = addr;
11889                                                 MonoInst *call, *localloc_ins;
11890                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11891                                                 int low_bit_reg = alloc_preg (cfg);
11892
11893                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11894                                                 NEW_BBLOCK (cfg, end_bb);
11895
11896                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11897                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11898                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11899
11900                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11901                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11902                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11903                                                 /*
11904                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11905                                                  */
11906                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11907                                                 ins->dreg = alloc_preg (cfg);
11908                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11909                                                 MONO_ADD_INS (cfg->cbb, ins);
11910                                                 localloc_ins = ins;
11911                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11912                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11913                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11914
11915                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11916                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11917
11918                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11919                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11920                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11921                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11922                                                 ins->dreg = call->dreg;
11923
11924                                                 MONO_START_BB (cfg, end_bb);
11925                                         } else {
11926                                                 /* Caller uses a normal calling conv */
11927
11928                                                 MonoInst *callee = addr;
11929                                                 MonoInst *call, *localloc_ins;
11930                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11931                                                 int low_bit_reg = alloc_preg (cfg);
11932
11933                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11934                                                 NEW_BBLOCK (cfg, end_bb);
11935
11936                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11937                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11938                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11939
11940                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
11941                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11942                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11943                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
11944                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11945                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11946                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
11947                                                 MONO_ADD_INS (cfg->cbb, addr);
11948                                                 /*
11949                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
11950                                                  */
11951                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11952                                                 ins->dreg = alloc_preg (cfg);
11953                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11954                                                 MONO_ADD_INS (cfg->cbb, ins);
11955                                                 localloc_ins = ins;
11956                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11957                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11958                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11959
11960                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11961                                                 ins->dreg = call->dreg;
11962                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11963
11964                                                 MONO_START_BB (cfg, end_bb);
11965                                         }
11966                                 } else {
11967                                         /* Same as CEE_CALLI */
11968                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
11969                                                 /*
11970                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
11971                                                  */
11972                                                 MonoInst *callee = addr;
11973
11974                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11975                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11976                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
11977                                         } else {
11978                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
11979                                         }
11980                                 }
11981
11982                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
11983                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
11984
11985                                 CHECK_CFG_EXCEPTION;
11986
11987                                 ip += 6;
11988                                 ins_flag = 0;
11989                                 constrained_class = NULL;
11990                                 break;
11991                         }
11992                         case CEE_MONO_LDDOMAIN:
11993                                 CHECK_STACK_OVF (1);
11994                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
11995                                 ip += 2;
11996                                 *sp++ = ins;
11997                                 break;
11998                         case CEE_MONO_GET_LAST_ERROR:
11999                                 CHECK_OPSIZE (2);
12000                                 CHECK_STACK_OVF (1);
12001
12002                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
12003                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
12004                                 ins->type = STACK_I4;
12005                                 MONO_ADD_INS (cfg->cbb, ins);
12006
12007                                 ip += 2;
12008                                 *sp++ = ins;
12009                                 break;
12010                         case CEE_MONO_GET_RGCTX_ARG:
12011                                 CHECK_OPSIZE (2);
12012                                 CHECK_STACK_OVF (1);
12013
12014                                 mono_create_rgctx_var (cfg);
12015
12016                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12017                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12018                                 ins->sreg1 = cfg->rgctx_var->dreg;
12019                                 ins->type = STACK_PTR;
12020                                 MONO_ADD_INS (cfg->cbb, ins);
12021
12022                                 ip += 2;
12023                                 *sp++ = ins;
12024                                 break;
12025                         default:
12026                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12027                                 break;
12028                         }
12029                         break;
12030                 }
12031
12032                 case CEE_PREFIX1: {
12033                         CHECK_OPSIZE (2);
12034                         switch (ip [1]) {
12035                         case CEE_ARGLIST: {
12036                                 /* somewhat similar to LDTOKEN */
12037                                 MonoInst *addr, *vtvar;
12038                                 CHECK_STACK_OVF (1);
12039                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12040
12041                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12042                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12043
12044                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12045                                 ins->type = STACK_VTYPE;
12046                                 ins->klass = mono_defaults.argumenthandle_class;
12047                                 *sp++ = ins;
12048                                 ip += 2;
12049                                 break;
12050                         }
12051                         case CEE_CEQ:
12052                         case CEE_CGT:
12053                         case CEE_CGT_UN:
12054                         case CEE_CLT:
12055                         case CEE_CLT_UN: {
12056                                 MonoInst *cmp, *arg1, *arg2;
12057
12058                                 CHECK_STACK (2);
12059                                 sp -= 2;
12060                                 arg1 = sp [0];
12061                                 arg2 = sp [1];
12062
12063                                 /*
12064                                  * The following transforms:
12065                                  *    CEE_CEQ    into OP_CEQ
12066                                  *    CEE_CGT    into OP_CGT
12067                                  *    CEE_CGT_UN into OP_CGT_UN
12068                                  *    CEE_CLT    into OP_CLT
12069                                  *    CEE_CLT_UN into OP_CLT_UN
12070                                  */
12071                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12072
12073                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12074                                 cmp->sreg1 = arg1->dreg;
12075                                 cmp->sreg2 = arg2->dreg;
12076                                 type_from_op (cfg, cmp, arg1, arg2);
12077                                 CHECK_TYPE (cmp);
12078                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12079                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12080                                         cmp->opcode = OP_LCOMPARE;
12081                                 else if (arg1->type == STACK_R4)
12082                                         cmp->opcode = OP_RCOMPARE;
12083                                 else if (arg1->type == STACK_R8)
12084                                         cmp->opcode = OP_FCOMPARE;
12085                                 else
12086                                         cmp->opcode = OP_ICOMPARE;
12087                                 MONO_ADD_INS (cfg->cbb, cmp);
12088                                 ins->type = STACK_I4;
12089                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12090                                 type_from_op (cfg, ins, arg1, arg2);
12091
12092                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12093                                         /*
12094                                          * The backends expect the fceq opcodes to do the
12095                                          * comparison too.
12096                                          */
12097                                         ins->sreg1 = cmp->sreg1;
12098                                         ins->sreg2 = cmp->sreg2;
12099                                         NULLIFY_INS (cmp);
12100                                 }
12101                                 MONO_ADD_INS (cfg->cbb, ins);
12102                                 *sp++ = ins;
12103                                 ip += 2;
12104                                 break;
12105                         }
12106                         case CEE_LDFTN: {
12107                                 MonoInst *argconst;
12108                                 MonoMethod *cil_method;
12109
12110                                 CHECK_STACK_OVF (1);
12111                                 CHECK_OPSIZE (6);
12112                                 n = read32 (ip + 2);
12113                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12114                                 CHECK_CFG_ERROR;
12115
12116                                 mono_class_init (cmethod->klass);
12117
12118                                 mono_save_token_info (cfg, image, n, cmethod);
12119
12120                                 context_used = mini_method_check_context_used (cfg, cmethod);
12121
12122                                 cil_method = cmethod;
12123                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12124                                         emit_method_access_failure (cfg, method, cil_method);
12125
12126                                 if (mono_security_core_clr_enabled ())
12127                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12128
12129                                 /*
12130                                  * Optimize the common case of ldftn+delegate creation
12131                                  */
12132                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12133                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12134                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12135                                                 MonoInst *target_ins, *handle_ins;
12136                                                 MonoMethod *invoke;
12137                                                 int invoke_context_used;
12138
12139                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12140                                                 if (!invoke || !mono_method_signature (invoke))
12141                                                         LOAD_ERROR;
12142
12143                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12144
12145                                                 target_ins = sp [-1];
12146
12147                                                 if (mono_security_core_clr_enabled ())
12148                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12149
12150                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12151                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12152                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12153                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12154                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12155                                                         }
12156                                                 }
12157
12158                                                 /* FIXME: SGEN support */
12159                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12160                                                         ip += 6;
12161                                                         if (cfg->verbose_level > 3)
12162                                                                 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));
12163                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12164                                                                 sp --;
12165                                                                 *sp = handle_ins;
12166                                                                 CHECK_CFG_EXCEPTION;
12167                                                                 ip += 5;
12168                                                                 sp ++;
12169                                                                 break;
12170                                                         }
12171                                                         ip -= 6;
12172                                                 }
12173                                         }
12174                                 }
12175
12176                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12177                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12178                                 *sp++ = ins;
12179
12180                                 ip += 6;
12181                                 inline_costs += 10 * num_calls++;
12182                                 break;
12183                         }
12184                         case CEE_LDVIRTFTN: {
12185                                 MonoInst *args [2];
12186
12187                                 CHECK_STACK (1);
12188                                 CHECK_OPSIZE (6);
12189                                 n = read32 (ip + 2);
12190                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12191                                 CHECK_CFG_ERROR;
12192
12193                                 mono_class_init (cmethod->klass);
12194
12195                                 context_used = mini_method_check_context_used (cfg, cmethod);
12196
12197                                 if (mono_security_core_clr_enabled ())
12198                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12199
12200                                 /*
12201                                  * Optimize the common case of ldvirtftn+delegate creation
12202                                  */
12203                                 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)) {
12204                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12205                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12206                                                 MonoInst *target_ins, *handle_ins;
12207                                                 MonoMethod *invoke;
12208                                                 int invoke_context_used;
12209                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12210
12211                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12212                                                 if (!invoke || !mono_method_signature (invoke))
12213                                                         LOAD_ERROR;
12214
12215                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12216
12217                                                 target_ins = sp [-1];
12218
12219                                                 if (mono_security_core_clr_enabled ())
12220                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12221
12222                                                 /* FIXME: SGEN support */
12223                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12224                                                         ip += 6;
12225                                                         if (cfg->verbose_level > 3)
12226                                                                 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));
12227                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12228                                                                 sp -= 2;
12229                                                                 *sp = handle_ins;
12230                                                                 CHECK_CFG_EXCEPTION;
12231                                                                 ip += 5;
12232                                                                 sp ++;
12233                                                                 break;
12234                                                         }
12235                                                         ip -= 6;
12236                                                 }
12237                                         }
12238                                 }
12239
12240                                 --sp;
12241                                 args [0] = *sp;
12242
12243                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12244                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12245
12246                                 if (context_used)
12247                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12248                                 else
12249                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12250
12251                                 ip += 6;
12252                                 inline_costs += 10 * num_calls++;
12253                                 break;
12254                         }
12255                         case CEE_LDARG:
12256                                 CHECK_STACK_OVF (1);
12257                                 CHECK_OPSIZE (4);
12258                                 n = read16 (ip + 2);
12259                                 CHECK_ARG (n);
12260                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12261                                 *sp++ = ins;
12262                                 ip += 4;
12263                                 break;
12264                         case CEE_LDARGA:
12265                                 CHECK_STACK_OVF (1);
12266                                 CHECK_OPSIZE (4);
12267                                 n = read16 (ip + 2);
12268                                 CHECK_ARG (n);
12269                                 NEW_ARGLOADA (cfg, ins, n);
12270                                 MONO_ADD_INS (cfg->cbb, ins);
12271                                 *sp++ = ins;
12272                                 ip += 4;
12273                                 break;
12274                         case CEE_STARG:
12275                                 CHECK_STACK (1);
12276                                 --sp;
12277                                 CHECK_OPSIZE (4);
12278                                 n = read16 (ip + 2);
12279                                 CHECK_ARG (n);
12280                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12281                                         UNVERIFIED;
12282                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12283                                 ip += 4;
12284                                 break;
12285                         case CEE_LDLOC:
12286                                 CHECK_STACK_OVF (1);
12287                                 CHECK_OPSIZE (4);
12288                                 n = read16 (ip + 2);
12289                                 CHECK_LOCAL (n);
12290                                 if ((ip [4] == CEE_LDFLD) && ip_in_bb (cfg, cfg->cbb, ip + 4) && header->locals [n]->type == MONO_TYPE_VALUETYPE) {
12291                                         /* Avoid loading a struct just to load one of its fields */
12292                                         EMIT_NEW_LOCLOADA (cfg, ins, n);
12293                                 } else {
12294                                         EMIT_NEW_LOCLOAD (cfg, ins, n);
12295                                 }
12296                                 *sp++ = ins;
12297                                 ip += 4;
12298                                 break;
12299                         case CEE_LDLOCA: {
12300                                 unsigned char *tmp_ip;
12301                                 CHECK_STACK_OVF (1);
12302                                 CHECK_OPSIZE (4);
12303                                 n = read16 (ip + 2);
12304                                 CHECK_LOCAL (n);
12305
12306                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12307                                         ip = tmp_ip;
12308                                         inline_costs += 1;
12309                                         break;
12310                                 }
12311
12312                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12313                                 *sp++ = ins;
12314                                 ip += 4;
12315                                 break;
12316                         }
12317                         case CEE_STLOC:
12318                                 CHECK_STACK (1);
12319                                 --sp;
12320                                 CHECK_OPSIZE (4);
12321                                 n = read16 (ip + 2);
12322                                 CHECK_LOCAL (n);
12323                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12324                                         UNVERIFIED;
12325                                 emit_stloc_ir (cfg, sp, header, n);
12326                                 ip += 4;
12327                                 inline_costs += 1;
12328                                 break;
12329                         case CEE_LOCALLOC: {
12330                                 CHECK_STACK (1);
12331                                 MonoBasicBlock *non_zero_bb, *end_bb;
12332                                 int alloc_ptr = alloc_preg (cfg);
12333                                 --sp;
12334                                 if (sp != stack_start)
12335                                         UNVERIFIED;
12336                                 if (cfg->method != method)
12337                                         /*
12338                                          * Inlining this into a loop in a parent could lead to
12339                                          * stack overflows which is different behavior than the
12340                                          * non-inlined case, thus disable inlining in this case.
12341                                          */
12342                                         INLINE_FAILURE("localloc");
12343
12344                                 NEW_BBLOCK (cfg, non_zero_bb);
12345                                 NEW_BBLOCK (cfg, end_bb);
12346
12347                                 /* if size != zero */
12348                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12349                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12350
12351                                 //size is zero, so result is NULL
12352                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12353                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12354
12355                                 MONO_START_BB (cfg, non_zero_bb);
12356                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12357                                 ins->dreg = alloc_ptr;
12358                                 ins->sreg1 = sp [0]->dreg;
12359                                 ins->type = STACK_PTR;
12360                                 MONO_ADD_INS (cfg->cbb, ins);
12361
12362                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12363                                 if (init_locals)
12364                                         ins->flags |= MONO_INST_INIT;
12365
12366                                 MONO_START_BB (cfg, end_bb);
12367                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12368                                 ins->type = STACK_PTR;
12369
12370                                 *sp++ = ins;
12371                                 ip += 2;
12372                                 break;
12373                         }
12374                         case CEE_ENDFILTER: {
12375                                 MonoExceptionClause *clause, *nearest;
12376                                 int cc;
12377
12378                                 CHECK_STACK (1);
12379                                 --sp;
12380                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12381                                         UNVERIFIED;
12382                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12383                                 ins->sreg1 = (*sp)->dreg;
12384                                 MONO_ADD_INS (cfg->cbb, ins);
12385                                 start_new_bblock = 1;
12386                                 ip += 2;
12387
12388                                 nearest = NULL;
12389                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12390                                         clause = &header->clauses [cc];
12391                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12392                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12393                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12394                                                 nearest = clause;
12395                                 }
12396                                 g_assert (nearest);
12397                                 if ((ip - header->code) != nearest->handler_offset)
12398                                         UNVERIFIED;
12399
12400                                 break;
12401                         }
12402                         case CEE_UNALIGNED_:
12403                                 ins_flag |= MONO_INST_UNALIGNED;
12404                                 /* FIXME: record alignment? we can assume 1 for now */
12405                                 CHECK_OPSIZE (3);
12406                                 ip += 3;
12407                                 break;
12408                         case CEE_VOLATILE_:
12409                                 ins_flag |= MONO_INST_VOLATILE;
12410                                 ip += 2;
12411                                 break;
12412                         case CEE_TAIL_:
12413                                 ins_flag   |= MONO_INST_TAILCALL;
12414                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12415                                 /* Can't inline tail calls at this time */
12416                                 inline_costs += 100000;
12417                                 ip += 2;
12418                                 break;
12419                         case CEE_INITOBJ:
12420                                 CHECK_STACK (1);
12421                                 --sp;
12422                                 CHECK_OPSIZE (6);
12423                                 token = read32 (ip + 2);
12424                                 klass = mini_get_class (method, token, generic_context);
12425                                 CHECK_TYPELOAD (klass);
12426                                 if (generic_class_is_reference_type (cfg, klass))
12427                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12428                                 else
12429                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12430                                 ip += 6;
12431                                 inline_costs += 1;
12432                                 break;
12433                         case CEE_CONSTRAINED_:
12434                                 CHECK_OPSIZE (6);
12435                                 token = read32 (ip + 2);
12436                                 constrained_class = mini_get_class (method, token, generic_context);
12437                                 CHECK_TYPELOAD (constrained_class);
12438                                 ip += 6;
12439                                 break;
12440                         case CEE_CPBLK:
12441                                 CHECK_STACK (3);
12442                                 sp -= 3;
12443                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12444                                 ip += 2;
12445                                 ins_flag = 0;
12446                                 inline_costs += 1;
12447                                 break;
12448                         case CEE_INITBLK:
12449                                 CHECK_STACK (3);
12450                                 sp -= 3;
12451                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12452                                 ip += 2;
12453                                 ins_flag = 0;
12454                                 inline_costs += 1;
12455                                 break;
12456                         case CEE_NO_:
12457                                 CHECK_OPSIZE (3);
12458                                 if (ip [2] & 0x1)
12459                                         ins_flag |= MONO_INST_NOTYPECHECK;
12460                                 if (ip [2] & 0x2)
12461                                         ins_flag |= MONO_INST_NORANGECHECK;
12462                                 /* we ignore the no-nullcheck for now since we
12463                                  * really do it explicitly only when doing callvirt->call
12464                                  */
12465                                 ip += 3;
12466                                 break;
12467                         case CEE_RETHROW: {
12468                                 MonoInst *load;
12469                                 int handler_offset = -1;
12470
12471                                 for (i = 0; i < header->num_clauses; ++i) {
12472                                         MonoExceptionClause *clause = &header->clauses [i];
12473                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12474                                                 handler_offset = clause->handler_offset;
12475                                                 break;
12476                                         }
12477                                 }
12478
12479                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12480
12481                                 if (handler_offset == -1)
12482                                         UNVERIFIED;
12483
12484                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12485                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12486                                 ins->sreg1 = load->dreg;
12487                                 MONO_ADD_INS (cfg->cbb, ins);
12488
12489                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12490                                 MONO_ADD_INS (cfg->cbb, ins);
12491
12492                                 sp = stack_start;
12493                                 link_bblock (cfg, cfg->cbb, end_bblock);
12494                                 start_new_bblock = 1;
12495                                 ip += 2;
12496                                 break;
12497                         }
12498                         case CEE_SIZEOF: {
12499                                 guint32 val;
12500                                 int ialign;
12501
12502                                 CHECK_STACK_OVF (1);
12503                                 CHECK_OPSIZE (6);
12504                                 token = read32 (ip + 2);
12505                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12506                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12507                                         CHECK_CFG_ERROR;
12508
12509                                         val = mono_type_size (type, &ialign);
12510                                 } else {
12511                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12512                                         CHECK_TYPELOAD (klass);
12513
12514                                         val = mono_type_size (&klass->byval_arg, &ialign);
12515
12516                                         if (mini_is_gsharedvt_klass (klass))
12517                                                 GSHAREDVT_FAILURE (*ip);
12518                                 }
12519                                 EMIT_NEW_ICONST (cfg, ins, val);
12520                                 *sp++= ins;
12521                                 ip += 6;
12522                                 break;
12523                         }
12524                         case CEE_REFANYTYPE: {
12525                                 MonoInst *src_var, *src;
12526
12527                                 GSHAREDVT_FAILURE (*ip);
12528
12529                                 CHECK_STACK (1);
12530                                 --sp;
12531
12532                                 // FIXME:
12533                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12534                                 if (!src_var)
12535                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12536                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12537                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12538                                 *sp++ = ins;
12539                                 ip += 2;
12540                                 break;
12541                         }
12542                         case CEE_READONLY_:
12543                                 readonly = TRUE;
12544                                 ip += 2;
12545                                 break;
12546
12547                         case CEE_UNUSED56:
12548                         case CEE_UNUSED57:
12549                         case CEE_UNUSED70:
12550                         case CEE_UNUSED:
12551                         case CEE_UNUSED99:
12552                                 UNVERIFIED;
12553
12554                         default:
12555                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12556                                 UNVERIFIED;
12557                         }
12558                         break;
12559                 }
12560                 case CEE_UNUSED58:
12561                 case CEE_UNUSED1:
12562                         UNVERIFIED;
12563
12564                 default:
12565                         g_warning ("opcode 0x%02x not handled", *ip);
12566                         UNVERIFIED;
12567                 }
12568         }
12569         if (start_new_bblock != 1)
12570                 UNVERIFIED;
12571
12572         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12573         if (cfg->cbb->next_bb) {
12574                 /* This could already be set because of inlining, #693905 */
12575                 MonoBasicBlock *bb = cfg->cbb;
12576
12577                 while (bb->next_bb)
12578                         bb = bb->next_bb;
12579                 bb->next_bb = end_bblock;
12580         } else {
12581                 cfg->cbb->next_bb = end_bblock;
12582         }
12583
12584         if (cfg->method == method && cfg->domainvar) {
12585                 MonoInst *store;
12586                 MonoInst *get_domain;
12587
12588                 cfg->cbb = init_localsbb;
12589
12590                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12591                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12592                 MONO_ADD_INS (cfg->cbb, store);
12593         }
12594
12595 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12596         if (cfg->compile_aot)
12597                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12598                 mono_get_got_var (cfg);
12599 #endif
12600
12601         if (cfg->method == method && cfg->got_var)
12602                 mono_emit_load_got_addr (cfg);
12603
12604         if (init_localsbb) {
12605                 cfg->cbb = init_localsbb;
12606                 cfg->ip = NULL;
12607                 for (i = 0; i < header->num_locals; ++i) {
12608                         emit_init_local (cfg, i, header->locals [i], init_locals);
12609                 }
12610         }
12611
12612         if (cfg->init_ref_vars && cfg->method == method) {
12613                 /* Emit initialization for ref vars */
12614                 // FIXME: Avoid duplication initialization for IL locals.
12615                 for (i = 0; i < cfg->num_varinfo; ++i) {
12616                         MonoInst *ins = cfg->varinfo [i];
12617
12618                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12619                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12620                 }
12621         }
12622
12623         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12624                 cfg->cbb = init_localsbb;
12625                 emit_push_lmf (cfg);
12626         }
12627
12628         cfg->cbb = init_localsbb;
12629         mini_profiler_emit_enter (cfg);
12630
12631         if (seq_points) {
12632                 MonoBasicBlock *bb;
12633
12634                 /*
12635                  * Make seq points at backward branch targets interruptable.
12636                  */
12637                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12638                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12639                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12640         }
12641
12642         /* Add a sequence point for method entry/exit events */
12643         if (seq_points && cfg->gen_sdb_seq_points) {
12644                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12645                 MONO_ADD_INS (init_localsbb, ins);
12646                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12647                 MONO_ADD_INS (cfg->bb_exit, ins);
12648         }
12649
12650         /*
12651          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12652          * the code they refer to was dead (#11880).
12653          */
12654         if (sym_seq_points) {
12655                 for (i = 0; i < header->code_size; ++i) {
12656                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12657                                 MonoInst *ins;
12658
12659                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12660                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12661                         }
12662                 }
12663         }
12664
12665         cfg->ip = NULL;
12666
12667         if (cfg->method == method) {
12668                 MonoBasicBlock *bb;
12669                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12670                         if (bb == cfg->bb_init)
12671                                 bb->region = -1;
12672                         else
12673                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12674                         if (cfg->spvars)
12675                                 mono_create_spvar_for_region (cfg, bb->region);
12676                         if (cfg->verbose_level > 2)
12677                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12678                 }
12679         } else {
12680                 MonoBasicBlock *bb;
12681                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12682                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12683                         bb->real_offset = inline_offset;
12684                 }
12685         }
12686
12687         if (inline_costs < 0) {
12688                 char *mname;
12689
12690                 /* Method is too large */
12691                 mname = mono_method_full_name (method, TRUE);
12692                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12693                 g_free (mname);
12694         }
12695
12696         if ((cfg->verbose_level > 2) && (cfg->method == method))
12697                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12698
12699         goto cleanup;
12700
12701 mono_error_exit:
12702         g_assert (!mono_error_ok (&cfg->error));
12703         goto cleanup;
12704
12705  exception_exit:
12706         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12707         goto cleanup;
12708
12709  unverified:
12710         set_exception_type_from_invalid_il (cfg, method, ip);
12711         goto cleanup;
12712
12713  cleanup:
12714         g_slist_free (class_inits);
12715         mono_basic_block_free (original_bb);
12716         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12717         if (cfg->exception_type)
12718                 return -1;
12719         else
12720                 return inline_costs;
12721 }
12722
12723 static int
12724 store_membase_reg_to_store_membase_imm (int opcode)
12725 {
12726         switch (opcode) {
12727         case OP_STORE_MEMBASE_REG:
12728                 return OP_STORE_MEMBASE_IMM;
12729         case OP_STOREI1_MEMBASE_REG:
12730                 return OP_STOREI1_MEMBASE_IMM;
12731         case OP_STOREI2_MEMBASE_REG:
12732                 return OP_STOREI2_MEMBASE_IMM;
12733         case OP_STOREI4_MEMBASE_REG:
12734                 return OP_STOREI4_MEMBASE_IMM;
12735         case OP_STOREI8_MEMBASE_REG:
12736                 return OP_STOREI8_MEMBASE_IMM;
12737         default:
12738                 g_assert_not_reached ();
12739         }
12740
12741         return -1;
12742 }
12743
12744 int
12745 mono_op_to_op_imm (int opcode)
12746 {
12747         switch (opcode) {
12748         case OP_IADD:
12749                 return OP_IADD_IMM;
12750         case OP_ISUB:
12751                 return OP_ISUB_IMM;
12752         case OP_IDIV:
12753                 return OP_IDIV_IMM;
12754         case OP_IDIV_UN:
12755                 return OP_IDIV_UN_IMM;
12756         case OP_IREM:
12757                 return OP_IREM_IMM;
12758         case OP_IREM_UN:
12759                 return OP_IREM_UN_IMM;
12760         case OP_IMUL:
12761                 return OP_IMUL_IMM;
12762         case OP_IAND:
12763                 return OP_IAND_IMM;
12764         case OP_IOR:
12765                 return OP_IOR_IMM;
12766         case OP_IXOR:
12767                 return OP_IXOR_IMM;
12768         case OP_ISHL:
12769                 return OP_ISHL_IMM;
12770         case OP_ISHR:
12771                 return OP_ISHR_IMM;
12772         case OP_ISHR_UN:
12773                 return OP_ISHR_UN_IMM;
12774
12775         case OP_LADD:
12776                 return OP_LADD_IMM;
12777         case OP_LSUB:
12778                 return OP_LSUB_IMM;
12779         case OP_LAND:
12780                 return OP_LAND_IMM;
12781         case OP_LOR:
12782                 return OP_LOR_IMM;
12783         case OP_LXOR:
12784                 return OP_LXOR_IMM;
12785         case OP_LSHL:
12786                 return OP_LSHL_IMM;
12787         case OP_LSHR:
12788                 return OP_LSHR_IMM;
12789         case OP_LSHR_UN:
12790                 return OP_LSHR_UN_IMM;
12791 #if SIZEOF_REGISTER == 8
12792         case OP_LREM:
12793                 return OP_LREM_IMM;
12794 #endif
12795
12796         case OP_COMPARE:
12797                 return OP_COMPARE_IMM;
12798         case OP_ICOMPARE:
12799                 return OP_ICOMPARE_IMM;
12800         case OP_LCOMPARE:
12801                 return OP_LCOMPARE_IMM;
12802
12803         case OP_STORE_MEMBASE_REG:
12804                 return OP_STORE_MEMBASE_IMM;
12805         case OP_STOREI1_MEMBASE_REG:
12806                 return OP_STOREI1_MEMBASE_IMM;
12807         case OP_STOREI2_MEMBASE_REG:
12808                 return OP_STOREI2_MEMBASE_IMM;
12809         case OP_STOREI4_MEMBASE_REG:
12810                 return OP_STOREI4_MEMBASE_IMM;
12811
12812 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12813         case OP_X86_PUSH:
12814                 return OP_X86_PUSH_IMM;
12815         case OP_X86_COMPARE_MEMBASE_REG:
12816                 return OP_X86_COMPARE_MEMBASE_IMM;
12817 #endif
12818 #if defined(TARGET_AMD64)
12819         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12820                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12821 #endif
12822         case OP_VOIDCALL_REG:
12823                 return OP_VOIDCALL;
12824         case OP_CALL_REG:
12825                 return OP_CALL;
12826         case OP_LCALL_REG:
12827                 return OP_LCALL;
12828         case OP_FCALL_REG:
12829                 return OP_FCALL;
12830         case OP_LOCALLOC:
12831                 return OP_LOCALLOC_IMM;
12832         }
12833
12834         return -1;
12835 }
12836
12837 static int
12838 ldind_to_load_membase (int opcode)
12839 {
12840         switch (opcode) {
12841         case CEE_LDIND_I1:
12842                 return OP_LOADI1_MEMBASE;
12843         case CEE_LDIND_U1:
12844                 return OP_LOADU1_MEMBASE;
12845         case CEE_LDIND_I2:
12846                 return OP_LOADI2_MEMBASE;
12847         case CEE_LDIND_U2:
12848                 return OP_LOADU2_MEMBASE;
12849         case CEE_LDIND_I4:
12850                 return OP_LOADI4_MEMBASE;
12851         case CEE_LDIND_U4:
12852                 return OP_LOADU4_MEMBASE;
12853         case CEE_LDIND_I:
12854                 return OP_LOAD_MEMBASE;
12855         case CEE_LDIND_REF:
12856                 return OP_LOAD_MEMBASE;
12857         case CEE_LDIND_I8:
12858                 return OP_LOADI8_MEMBASE;
12859         case CEE_LDIND_R4:
12860                 return OP_LOADR4_MEMBASE;
12861         case CEE_LDIND_R8:
12862                 return OP_LOADR8_MEMBASE;
12863         default:
12864                 g_assert_not_reached ();
12865         }
12866
12867         return -1;
12868 }
12869
12870 static int
12871 stind_to_store_membase (int opcode)
12872 {
12873         switch (opcode) {
12874         case CEE_STIND_I1:
12875                 return OP_STOREI1_MEMBASE_REG;
12876         case CEE_STIND_I2:
12877                 return OP_STOREI2_MEMBASE_REG;
12878         case CEE_STIND_I4:
12879                 return OP_STOREI4_MEMBASE_REG;
12880         case CEE_STIND_I:
12881         case CEE_STIND_REF:
12882                 return OP_STORE_MEMBASE_REG;
12883         case CEE_STIND_I8:
12884                 return OP_STOREI8_MEMBASE_REG;
12885         case CEE_STIND_R4:
12886                 return OP_STORER4_MEMBASE_REG;
12887         case CEE_STIND_R8:
12888                 return OP_STORER8_MEMBASE_REG;
12889         default:
12890                 g_assert_not_reached ();
12891         }
12892
12893         return -1;
12894 }
12895
12896 int
12897 mono_load_membase_to_load_mem (int opcode)
12898 {
12899         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12900 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12901         switch (opcode) {
12902         case OP_LOAD_MEMBASE:
12903                 return OP_LOAD_MEM;
12904         case OP_LOADU1_MEMBASE:
12905                 return OP_LOADU1_MEM;
12906         case OP_LOADU2_MEMBASE:
12907                 return OP_LOADU2_MEM;
12908         case OP_LOADI4_MEMBASE:
12909                 return OP_LOADI4_MEM;
12910         case OP_LOADU4_MEMBASE:
12911                 return OP_LOADU4_MEM;
12912 #if SIZEOF_REGISTER == 8
12913         case OP_LOADI8_MEMBASE:
12914                 return OP_LOADI8_MEM;
12915 #endif
12916         }
12917 #endif
12918
12919         return -1;
12920 }
12921
12922 static inline int
12923 op_to_op_dest_membase (int store_opcode, int opcode)
12924 {
12925 #if defined(TARGET_X86)
12926         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12927                 return -1;
12928
12929         switch (opcode) {
12930         case OP_IADD:
12931                 return OP_X86_ADD_MEMBASE_REG;
12932         case OP_ISUB:
12933                 return OP_X86_SUB_MEMBASE_REG;
12934         case OP_IAND:
12935                 return OP_X86_AND_MEMBASE_REG;
12936         case OP_IOR:
12937                 return OP_X86_OR_MEMBASE_REG;
12938         case OP_IXOR:
12939                 return OP_X86_XOR_MEMBASE_REG;
12940         case OP_ADD_IMM:
12941         case OP_IADD_IMM:
12942                 return OP_X86_ADD_MEMBASE_IMM;
12943         case OP_SUB_IMM:
12944         case OP_ISUB_IMM:
12945                 return OP_X86_SUB_MEMBASE_IMM;
12946         case OP_AND_IMM:
12947         case OP_IAND_IMM:
12948                 return OP_X86_AND_MEMBASE_IMM;
12949         case OP_OR_IMM:
12950         case OP_IOR_IMM:
12951                 return OP_X86_OR_MEMBASE_IMM;
12952         case OP_XOR_IMM:
12953         case OP_IXOR_IMM:
12954                 return OP_X86_XOR_MEMBASE_IMM;
12955         case OP_MOVE:
12956                 return OP_NOP;
12957         }
12958 #endif
12959
12960 #if defined(TARGET_AMD64)
12961         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12962                 return -1;
12963
12964         switch (opcode) {
12965         case OP_IADD:
12966                 return OP_X86_ADD_MEMBASE_REG;
12967         case OP_ISUB:
12968                 return OP_X86_SUB_MEMBASE_REG;
12969         case OP_IAND:
12970                 return OP_X86_AND_MEMBASE_REG;
12971         case OP_IOR:
12972                 return OP_X86_OR_MEMBASE_REG;
12973         case OP_IXOR:
12974                 return OP_X86_XOR_MEMBASE_REG;
12975         case OP_IADD_IMM:
12976                 return OP_X86_ADD_MEMBASE_IMM;
12977         case OP_ISUB_IMM:
12978                 return OP_X86_SUB_MEMBASE_IMM;
12979         case OP_IAND_IMM:
12980                 return OP_X86_AND_MEMBASE_IMM;
12981         case OP_IOR_IMM:
12982                 return OP_X86_OR_MEMBASE_IMM;
12983         case OP_IXOR_IMM:
12984                 return OP_X86_XOR_MEMBASE_IMM;
12985         case OP_LADD:
12986                 return OP_AMD64_ADD_MEMBASE_REG;
12987         case OP_LSUB:
12988                 return OP_AMD64_SUB_MEMBASE_REG;
12989         case OP_LAND:
12990                 return OP_AMD64_AND_MEMBASE_REG;
12991         case OP_LOR:
12992                 return OP_AMD64_OR_MEMBASE_REG;
12993         case OP_LXOR:
12994                 return OP_AMD64_XOR_MEMBASE_REG;
12995         case OP_ADD_IMM:
12996         case OP_LADD_IMM:
12997                 return OP_AMD64_ADD_MEMBASE_IMM;
12998         case OP_SUB_IMM:
12999         case OP_LSUB_IMM:
13000                 return OP_AMD64_SUB_MEMBASE_IMM;
13001         case OP_AND_IMM:
13002         case OP_LAND_IMM:
13003                 return OP_AMD64_AND_MEMBASE_IMM;
13004         case OP_OR_IMM:
13005         case OP_LOR_IMM:
13006                 return OP_AMD64_OR_MEMBASE_IMM;
13007         case OP_XOR_IMM:
13008         case OP_LXOR_IMM:
13009                 return OP_AMD64_XOR_MEMBASE_IMM;
13010         case OP_MOVE:
13011                 return OP_NOP;
13012         }
13013 #endif
13014
13015         return -1;
13016 }
13017
13018 static inline int
13019 op_to_op_store_membase (int store_opcode, int opcode)
13020 {
13021 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13022         switch (opcode) {
13023         case OP_ICEQ:
13024                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13025                         return OP_X86_SETEQ_MEMBASE;
13026         case OP_CNE:
13027                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13028                         return OP_X86_SETNE_MEMBASE;
13029         }
13030 #endif
13031
13032         return -1;
13033 }
13034
13035 static inline int
13036 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13037 {
13038 #ifdef TARGET_X86
13039         /* FIXME: This has sign extension issues */
13040         /*
13041         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13042                 return OP_X86_COMPARE_MEMBASE8_IMM;
13043         */
13044
13045         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13046                 return -1;
13047
13048         switch (opcode) {
13049         case OP_X86_PUSH:
13050                 return OP_X86_PUSH_MEMBASE;
13051         case OP_COMPARE_IMM:
13052         case OP_ICOMPARE_IMM:
13053                 return OP_X86_COMPARE_MEMBASE_IMM;
13054         case OP_COMPARE:
13055         case OP_ICOMPARE:
13056                 return OP_X86_COMPARE_MEMBASE_REG;
13057         }
13058 #endif
13059
13060 #ifdef TARGET_AMD64
13061         /* FIXME: This has sign extension issues */
13062         /*
13063         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13064                 return OP_X86_COMPARE_MEMBASE8_IMM;
13065         */
13066
13067         switch (opcode) {
13068         case OP_X86_PUSH:
13069                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13070                         return OP_X86_PUSH_MEMBASE;
13071                 break;
13072                 /* FIXME: This only works for 32 bit immediates
13073         case OP_COMPARE_IMM:
13074         case OP_LCOMPARE_IMM:
13075                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13076                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13077                 */
13078         case OP_ICOMPARE_IMM:
13079                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13080                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13081                 break;
13082         case OP_COMPARE:
13083         case OP_LCOMPARE:
13084                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13085                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13086                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13087                         return OP_AMD64_COMPARE_MEMBASE_REG;
13088                 break;
13089         case OP_ICOMPARE:
13090                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13091                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13092                 break;
13093         }
13094 #endif
13095
13096         return -1;
13097 }
13098
13099 static inline int
13100 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13101 {
13102 #ifdef TARGET_X86
13103         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13104                 return -1;
13105
13106         switch (opcode) {
13107         case OP_COMPARE:
13108         case OP_ICOMPARE:
13109                 return OP_X86_COMPARE_REG_MEMBASE;
13110         case OP_IADD:
13111                 return OP_X86_ADD_REG_MEMBASE;
13112         case OP_ISUB:
13113                 return OP_X86_SUB_REG_MEMBASE;
13114         case OP_IAND:
13115                 return OP_X86_AND_REG_MEMBASE;
13116         case OP_IOR:
13117                 return OP_X86_OR_REG_MEMBASE;
13118         case OP_IXOR:
13119                 return OP_X86_XOR_REG_MEMBASE;
13120         }
13121 #endif
13122
13123 #ifdef TARGET_AMD64
13124         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13125                 switch (opcode) {
13126                 case OP_ICOMPARE:
13127                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13128                 case OP_IADD:
13129                         return OP_X86_ADD_REG_MEMBASE;
13130                 case OP_ISUB:
13131                         return OP_X86_SUB_REG_MEMBASE;
13132                 case OP_IAND:
13133                         return OP_X86_AND_REG_MEMBASE;
13134                 case OP_IOR:
13135                         return OP_X86_OR_REG_MEMBASE;
13136                 case OP_IXOR:
13137                         return OP_X86_XOR_REG_MEMBASE;
13138                 }
13139         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13140                 switch (opcode) {
13141                 case OP_COMPARE:
13142                 case OP_LCOMPARE:
13143                         return OP_AMD64_COMPARE_REG_MEMBASE;
13144                 case OP_LADD:
13145                         return OP_AMD64_ADD_REG_MEMBASE;
13146                 case OP_LSUB:
13147                         return OP_AMD64_SUB_REG_MEMBASE;
13148                 case OP_LAND:
13149                         return OP_AMD64_AND_REG_MEMBASE;
13150                 case OP_LOR:
13151                         return OP_AMD64_OR_REG_MEMBASE;
13152                 case OP_LXOR:
13153                         return OP_AMD64_XOR_REG_MEMBASE;
13154                 }
13155         }
13156 #endif
13157
13158         return -1;
13159 }
13160
13161 int
13162 mono_op_to_op_imm_noemul (int opcode)
13163 {
13164         switch (opcode) {
13165 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13166         case OP_LSHR:
13167         case OP_LSHL:
13168         case OP_LSHR_UN:
13169                 return -1;
13170 #endif
13171 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13172         case OP_IDIV:
13173         case OP_IDIV_UN:
13174         case OP_IREM:
13175         case OP_IREM_UN:
13176                 return -1;
13177 #endif
13178 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13179         case OP_IMUL:
13180                 return -1;
13181 #endif
13182         default:
13183                 return mono_op_to_op_imm (opcode);
13184         }
13185 }
13186
13187 /**
13188  * mono_handle_global_vregs:
13189  *
13190  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13191  * for them.
13192  */
13193 void
13194 mono_handle_global_vregs (MonoCompile *cfg)
13195 {
13196         gint32 *vreg_to_bb;
13197         MonoBasicBlock *bb;
13198         int i, pos;
13199
13200         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13201
13202 #ifdef MONO_ARCH_SIMD_INTRINSICS
13203         if (cfg->uses_simd_intrinsics)
13204                 mono_simd_simplify_indirection (cfg);
13205 #endif
13206
13207         /* Find local vregs used in more than one bb */
13208         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13209                 MonoInst *ins = bb->code;
13210                 int block_num = bb->block_num;
13211
13212                 if (cfg->verbose_level > 2)
13213                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13214
13215                 cfg->cbb = bb;
13216                 for (; ins; ins = ins->next) {
13217                         const char *spec = INS_INFO (ins->opcode);
13218                         int regtype = 0, regindex;
13219                         gint32 prev_bb;
13220
13221                         if (G_UNLIKELY (cfg->verbose_level > 2))
13222                                 mono_print_ins (ins);
13223
13224                         g_assert (ins->opcode >= MONO_CEE_LAST);
13225
13226                         for (regindex = 0; regindex < 4; regindex ++) {
13227                                 int vreg = 0;
13228
13229                                 if (regindex == 0) {
13230                                         regtype = spec [MONO_INST_DEST];
13231                                         if (regtype == ' ')
13232                                                 continue;
13233                                         vreg = ins->dreg;
13234                                 } else if (regindex == 1) {
13235                                         regtype = spec [MONO_INST_SRC1];
13236                                         if (regtype == ' ')
13237                                                 continue;
13238                                         vreg = ins->sreg1;
13239                                 } else if (regindex == 2) {
13240                                         regtype = spec [MONO_INST_SRC2];
13241                                         if (regtype == ' ')
13242                                                 continue;
13243                                         vreg = ins->sreg2;
13244                                 } else if (regindex == 3) {
13245                                         regtype = spec [MONO_INST_SRC3];
13246                                         if (regtype == ' ')
13247                                                 continue;
13248                                         vreg = ins->sreg3;
13249                                 }
13250
13251 #if SIZEOF_REGISTER == 4
13252                                 /* In the LLVM case, the long opcodes are not decomposed */
13253                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13254                                         /*
13255                                          * Since some instructions reference the original long vreg,
13256                                          * and some reference the two component vregs, it is quite hard
13257                                          * to determine when it needs to be global. So be conservative.
13258                                          */
13259                                         if (!get_vreg_to_inst (cfg, vreg)) {
13260                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13261
13262                                                 if (cfg->verbose_level > 2)
13263                                                         printf ("LONG VREG R%d made global.\n", vreg);
13264                                         }
13265
13266                                         /*
13267                                          * Make the component vregs volatile since the optimizations can
13268                                          * get confused otherwise.
13269                                          */
13270                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13271                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13272                                 }
13273 #endif
13274
13275                                 g_assert (vreg != -1);
13276
13277                                 prev_bb = vreg_to_bb [vreg];
13278                                 if (prev_bb == 0) {
13279                                         /* 0 is a valid block num */
13280                                         vreg_to_bb [vreg] = block_num + 1;
13281                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13282                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13283                                                 continue;
13284
13285                                         if (!get_vreg_to_inst (cfg, vreg)) {
13286                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13287                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13288
13289                                                 switch (regtype) {
13290                                                 case 'i':
13291                                                         if (vreg_is_ref (cfg, vreg))
13292                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13293                                                         else
13294                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13295                                                         break;
13296                                                 case 'l':
13297                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13298                                                         break;
13299                                                 case 'f':
13300                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13301                                                         break;
13302                                                 case 'v':
13303                                                 case 'x':
13304                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13305                                                         break;
13306                                                 default:
13307                                                         g_assert_not_reached ();
13308                                                 }
13309                                         }
13310
13311                                         /* Flag as having been used in more than one bb */
13312                                         vreg_to_bb [vreg] = -1;
13313                                 }
13314                         }
13315                 }
13316         }
13317
13318         /* If a variable is used in only one bblock, convert it into a local vreg */
13319         for (i = 0; i < cfg->num_varinfo; i++) {
13320                 MonoInst *var = cfg->varinfo [i];
13321                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13322
13323                 switch (var->type) {
13324                 case STACK_I4:
13325                 case STACK_OBJ:
13326                 case STACK_PTR:
13327                 case STACK_MP:
13328                 case STACK_VTYPE:
13329 #if SIZEOF_REGISTER == 8
13330                 case STACK_I8:
13331 #endif
13332 #if !defined(TARGET_X86)
13333                 /* Enabling this screws up the fp stack on x86 */
13334                 case STACK_R8:
13335 #endif
13336                         if (mono_arch_is_soft_float ())
13337                                 break;
13338
13339                         /*
13340                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13341                                 break;
13342                         */
13343
13344                         /* Arguments are implicitly global */
13345                         /* Putting R4 vars into registers doesn't work currently */
13346                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13347                         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) {
13348                                 /*
13349                                  * Make that the variable's liveness interval doesn't contain a call, since
13350                                  * that would cause the lvreg to be spilled, making the whole optimization
13351                                  * useless.
13352                                  */
13353                                 /* This is too slow for JIT compilation */
13354 #if 0
13355                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13356                                         MonoInst *ins;
13357                                         int def_index, call_index, ins_index;
13358                                         gboolean spilled = FALSE;
13359
13360                                         def_index = -1;
13361                                         call_index = -1;
13362                                         ins_index = 0;
13363                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13364                                                 const char *spec = INS_INFO (ins->opcode);
13365
13366                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13367                                                         def_index = ins_index;
13368
13369                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13370                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13371                                                         if (call_index > def_index) {
13372                                                                 spilled = TRUE;
13373                                                                 break;
13374                                                         }
13375                                                 }
13376
13377                                                 if (MONO_IS_CALL (ins))
13378                                                         call_index = ins_index;
13379
13380                                                 ins_index ++;
13381                                         }
13382
13383                                         if (spilled)
13384                                                 break;
13385                                 }
13386 #endif
13387
13388                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13389                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13390                                 var->flags |= MONO_INST_IS_DEAD;
13391                                 cfg->vreg_to_inst [var->dreg] = NULL;
13392                         }
13393                         break;
13394                 }
13395         }
13396
13397         /*
13398          * Compress the varinfo and vars tables so the liveness computation is faster and
13399          * takes up less space.
13400          */
13401         pos = 0;
13402         for (i = 0; i < cfg->num_varinfo; ++i) {
13403                 MonoInst *var = cfg->varinfo [i];
13404                 if (pos < i && cfg->locals_start == i)
13405                         cfg->locals_start = pos;
13406                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13407                         if (pos < i) {
13408                                 cfg->varinfo [pos] = cfg->varinfo [i];
13409                                 cfg->varinfo [pos]->inst_c0 = pos;
13410                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13411                                 cfg->vars [pos].idx = pos;
13412 #if SIZEOF_REGISTER == 4
13413                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13414                                         /* Modify the two component vars too */
13415                                         MonoInst *var1;
13416
13417                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13418                                         var1->inst_c0 = pos;
13419                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13420                                         var1->inst_c0 = pos;
13421                                 }
13422 #endif
13423                         }
13424                         pos ++;
13425                 }
13426         }
13427         cfg->num_varinfo = pos;
13428         if (cfg->locals_start > cfg->num_varinfo)
13429                 cfg->locals_start = cfg->num_varinfo;
13430 }
13431
13432 /*
13433  * mono_allocate_gsharedvt_vars:
13434  *
13435  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13436  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13437  */
13438 void
13439 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13440 {
13441         int i;
13442
13443         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13444
13445         for (i = 0; i < cfg->num_varinfo; ++i) {
13446                 MonoInst *ins = cfg->varinfo [i];
13447                 int idx;
13448
13449                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13450                         if (i >= cfg->locals_start) {
13451                                 /* Local */
13452                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13453                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13454                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13455                                 ins->inst_imm = idx;
13456                         } else {
13457                                 /* Arg */
13458                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13459                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13460                         }
13461                 }
13462         }
13463 }
13464
13465 /**
13466  * mono_spill_global_vars:
13467  *
13468  *   Generate spill code for variables which are not allocated to registers,
13469  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13470  * code is generated which could be optimized by the local optimization passes.
13471  */
13472 void
13473 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13474 {
13475         MonoBasicBlock *bb;
13476         char spec2 [16];
13477         int orig_next_vreg;
13478         guint32 *vreg_to_lvreg;
13479         guint32 *lvregs;
13480         guint32 i, lvregs_len, lvregs_size;
13481         gboolean dest_has_lvreg = FALSE;
13482         MonoStackType stacktypes [128];
13483         MonoInst **live_range_start, **live_range_end;
13484         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13485
13486         *need_local_opts = FALSE;
13487
13488         memset (spec2, 0, sizeof (spec2));
13489
13490         /* FIXME: Move this function to mini.c */
13491         stacktypes ['i'] = STACK_PTR;
13492         stacktypes ['l'] = STACK_I8;
13493         stacktypes ['f'] = STACK_R8;
13494 #ifdef MONO_ARCH_SIMD_INTRINSICS
13495         stacktypes ['x'] = STACK_VTYPE;
13496 #endif
13497
13498 #if SIZEOF_REGISTER == 4
13499         /* Create MonoInsts for longs */
13500         for (i = 0; i < cfg->num_varinfo; i++) {
13501                 MonoInst *ins = cfg->varinfo [i];
13502
13503                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13504                         switch (ins->type) {
13505                         case STACK_R8:
13506                         case STACK_I8: {
13507                                 MonoInst *tree;
13508
13509                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13510                                         break;
13511
13512                                 g_assert (ins->opcode == OP_REGOFFSET);
13513
13514                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13515                                 g_assert (tree);
13516                                 tree->opcode = OP_REGOFFSET;
13517                                 tree->inst_basereg = ins->inst_basereg;
13518                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13519
13520                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13521                                 g_assert (tree);
13522                                 tree->opcode = OP_REGOFFSET;
13523                                 tree->inst_basereg = ins->inst_basereg;
13524                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13525                                 break;
13526                         }
13527                         default:
13528                                 break;
13529                         }
13530                 }
13531         }
13532 #endif
13533
13534         if (cfg->compute_gc_maps) {
13535                 /* registers need liveness info even for !non refs */
13536                 for (i = 0; i < cfg->num_varinfo; i++) {
13537                         MonoInst *ins = cfg->varinfo [i];
13538
13539                         if (ins->opcode == OP_REGVAR)
13540                                 ins->flags |= MONO_INST_GC_TRACK;
13541                 }
13542         }
13543
13544         /* FIXME: widening and truncation */
13545
13546         /*
13547          * As an optimization, when a variable allocated to the stack is first loaded into
13548          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13549          * the variable again.
13550          */
13551         orig_next_vreg = cfg->next_vreg;
13552         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13553         lvregs_size = 1024;
13554         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13555         lvregs_len = 0;
13556
13557         /*
13558          * These arrays contain the first and last instructions accessing a given
13559          * variable.
13560          * Since we emit bblocks in the same order we process them here, and we
13561          * don't split live ranges, these will precisely describe the live range of
13562          * the variable, i.e. the instruction range where a valid value can be found
13563          * in the variables location.
13564          * The live range is computed using the liveness info computed by the liveness pass.
13565          * We can't use vmv->range, since that is an abstract live range, and we need
13566          * one which is instruction precise.
13567          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13568          */
13569         /* FIXME: Only do this if debugging info is requested */
13570         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13571         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13572         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13573         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13574
13575         /* Add spill loads/stores */
13576         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13577                 MonoInst *ins;
13578
13579                 if (cfg->verbose_level > 2)
13580                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13581
13582                 /* Clear vreg_to_lvreg array */
13583                 for (i = 0; i < lvregs_len; i++)
13584                         vreg_to_lvreg [lvregs [i]] = 0;
13585                 lvregs_len = 0;
13586
13587                 cfg->cbb = bb;
13588                 MONO_BB_FOR_EACH_INS (bb, ins) {
13589                         const char *spec = INS_INFO (ins->opcode);
13590                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13591                         gboolean store, no_lvreg;
13592                         int sregs [MONO_MAX_SRC_REGS];
13593
13594                         if (G_UNLIKELY (cfg->verbose_level > 2))
13595                                 mono_print_ins (ins);
13596
13597                         if (ins->opcode == OP_NOP)
13598                                 continue;
13599
13600                         /*
13601                          * We handle LDADDR here as well, since it can only be decomposed
13602                          * when variable addresses are known.
13603                          */
13604                         if (ins->opcode == OP_LDADDR) {
13605                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13606
13607                                 if (var->opcode == OP_VTARG_ADDR) {
13608                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13609                                         MonoInst *vtaddr = var->inst_left;
13610                                         if (vtaddr->opcode == OP_REGVAR) {
13611                                                 ins->opcode = OP_MOVE;
13612                                                 ins->sreg1 = vtaddr->dreg;
13613                                         }
13614                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13615                                                 ins->opcode = OP_LOAD_MEMBASE;
13616                                                 ins->inst_basereg = vtaddr->inst_basereg;
13617                                                 ins->inst_offset = vtaddr->inst_offset;
13618                                         } else
13619                                                 NOT_IMPLEMENTED;
13620                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13621                                         /* gsharedvt arg passed by ref */
13622                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13623
13624                                         ins->opcode = OP_LOAD_MEMBASE;
13625                                         ins->inst_basereg = var->inst_basereg;
13626                                         ins->inst_offset = var->inst_offset;
13627                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13628                                         MonoInst *load, *load2, *load3;
13629                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13630                                         int reg1, reg2, reg3;
13631                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13632                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13633
13634                                         /*
13635                                          * gsharedvt local.
13636                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13637                                          */
13638
13639                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13640
13641                                         g_assert (info_var);
13642                                         g_assert (locals_var);
13643
13644                                         /* Mark the instruction used to compute the locals var as used */
13645                                         cfg->gsharedvt_locals_var_ins = NULL;
13646
13647                                         /* Load the offset */
13648                                         if (info_var->opcode == OP_REGOFFSET) {
13649                                                 reg1 = alloc_ireg (cfg);
13650                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13651                                         } else if (info_var->opcode == OP_REGVAR) {
13652                                                 load = NULL;
13653                                                 reg1 = info_var->dreg;
13654                                         } else {
13655                                                 g_assert_not_reached ();
13656                                         }
13657                                         reg2 = alloc_ireg (cfg);
13658                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13659                                         /* Load the locals area address */
13660                                         reg3 = alloc_ireg (cfg);
13661                                         if (locals_var->opcode == OP_REGOFFSET) {
13662                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13663                                         } else if (locals_var->opcode == OP_REGVAR) {
13664                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13665                                         } else {
13666                                                 g_assert_not_reached ();
13667                                         }
13668                                         /* Compute the address */
13669                                         ins->opcode = OP_PADD;
13670                                         ins->sreg1 = reg3;
13671                                         ins->sreg2 = reg2;
13672
13673                                         mono_bblock_insert_before_ins (bb, ins, load3);
13674                                         mono_bblock_insert_before_ins (bb, load3, load2);
13675                                         if (load)
13676                                                 mono_bblock_insert_before_ins (bb, load2, load);
13677                                 } else {
13678                                         g_assert (var->opcode == OP_REGOFFSET);
13679
13680                                         ins->opcode = OP_ADD_IMM;
13681                                         ins->sreg1 = var->inst_basereg;
13682                                         ins->inst_imm = var->inst_offset;
13683                                 }
13684
13685                                 *need_local_opts = TRUE;
13686                                 spec = INS_INFO (ins->opcode);
13687                         }
13688
13689                         if (ins->opcode < MONO_CEE_LAST) {
13690                                 mono_print_ins (ins);
13691                                 g_assert_not_reached ();
13692                         }
13693
13694                         /*
13695                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13696                          * src register.
13697                          * FIXME:
13698                          */
13699                         if (MONO_IS_STORE_MEMBASE (ins)) {
13700                                 tmp_reg = ins->dreg;
13701                                 ins->dreg = ins->sreg2;
13702                                 ins->sreg2 = tmp_reg;
13703                                 store = TRUE;
13704
13705                                 spec2 [MONO_INST_DEST] = ' ';
13706                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13707                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13708                                 spec2 [MONO_INST_SRC3] = ' ';
13709                                 spec = spec2;
13710                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13711                                 g_assert_not_reached ();
13712                         else
13713                                 store = FALSE;
13714                         no_lvreg = FALSE;
13715
13716                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13717                                 printf ("\t %.3s %d", spec, ins->dreg);
13718                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13719                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13720                                         printf (" %d", sregs [srcindex]);
13721                                 printf ("\n");
13722                         }
13723
13724                         /***************/
13725                         /*    DREG     */
13726                         /***************/
13727                         regtype = spec [MONO_INST_DEST];
13728                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13729                         prev_dreg = -1;
13730
13731                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13732                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13733                                 MonoInst *store_ins;
13734                                 int store_opcode;
13735                                 MonoInst *def_ins = ins;
13736                                 int dreg = ins->dreg; /* The original vreg */
13737
13738                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13739
13740                                 if (var->opcode == OP_REGVAR) {
13741                                         ins->dreg = var->dreg;
13742                                 } 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)) {
13743                                         /*
13744                                          * Instead of emitting a load+store, use a _membase opcode.
13745                                          */
13746                                         g_assert (var->opcode == OP_REGOFFSET);
13747                                         if (ins->opcode == OP_MOVE) {
13748                                                 NULLIFY_INS (ins);
13749                                                 def_ins = NULL;
13750                                         } else {
13751                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13752                                                 ins->inst_basereg = var->inst_basereg;
13753                                                 ins->inst_offset = var->inst_offset;
13754                                                 ins->dreg = -1;
13755                                         }
13756                                         spec = INS_INFO (ins->opcode);
13757                                 } else {
13758                                         guint32 lvreg;
13759
13760                                         g_assert (var->opcode == OP_REGOFFSET);
13761
13762                                         prev_dreg = ins->dreg;
13763
13764                                         /* Invalidate any previous lvreg for this vreg */
13765                                         vreg_to_lvreg [ins->dreg] = 0;
13766
13767                                         lvreg = 0;
13768
13769                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13770                                                 regtype = 'l';
13771                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13772                                         }
13773
13774                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13775
13776 #if SIZEOF_REGISTER != 8
13777                                         if (regtype == 'l') {
13778                                                 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));
13779                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13780                                                 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));
13781                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13782                                                 def_ins = store_ins;
13783                                         }
13784                                         else
13785 #endif
13786                                         {
13787                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13788
13789                                                 /* Try to fuse the store into the instruction itself */
13790                                                 /* FIXME: Add more instructions */
13791                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13792                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13793                                                         ins->inst_imm = ins->inst_c0;
13794                                                         ins->inst_destbasereg = var->inst_basereg;
13795                                                         ins->inst_offset = var->inst_offset;
13796                                                         spec = INS_INFO (ins->opcode);
13797                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13798                                                         ins->opcode = store_opcode;
13799                                                         ins->inst_destbasereg = var->inst_basereg;
13800                                                         ins->inst_offset = var->inst_offset;
13801
13802                                                         no_lvreg = TRUE;
13803
13804                                                         tmp_reg = ins->dreg;
13805                                                         ins->dreg = ins->sreg2;
13806                                                         ins->sreg2 = tmp_reg;
13807                                                         store = TRUE;
13808
13809                                                         spec2 [MONO_INST_DEST] = ' ';
13810                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13811                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13812                                                         spec2 [MONO_INST_SRC3] = ' ';
13813                                                         spec = spec2;
13814                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13815                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13816                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13817                                                         ins->dreg = -1;
13818                                                         ins->inst_basereg = var->inst_basereg;
13819                                                         ins->inst_offset = var->inst_offset;
13820                                                         spec = INS_INFO (ins->opcode);
13821                                                 } else {
13822                                                         /* printf ("INS: "); mono_print_ins (ins); */
13823                                                         /* Create a store instruction */
13824                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13825
13826                                                         /* Insert it after the instruction */
13827                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13828
13829                                                         def_ins = store_ins;
13830
13831                                                         /*
13832                                                          * We can't assign ins->dreg to var->dreg here, since the
13833                                                          * sregs could use it. So set a flag, and do it after
13834                                                          * the sregs.
13835                                                          */
13836                                                         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)))
13837                                                                 dest_has_lvreg = TRUE;
13838                                                 }
13839                                         }
13840                                 }
13841
13842                                 if (def_ins && !live_range_start [dreg]) {
13843                                         live_range_start [dreg] = def_ins;
13844                                         live_range_start_bb [dreg] = bb;
13845                                 }
13846
13847                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13848                                         MonoInst *tmp;
13849
13850                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13851                                         tmp->inst_c1 = dreg;
13852                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13853                                 }
13854                         }
13855
13856                         /************/
13857                         /*  SREGS   */
13858                         /************/
13859                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13860                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13861                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13862                                 sreg = sregs [srcindex];
13863
13864                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13865                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13866                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13867                                         MonoInst *use_ins = ins;
13868                                         MonoInst *load_ins;
13869                                         guint32 load_opcode;
13870
13871                                         if (var->opcode == OP_REGVAR) {
13872                                                 sregs [srcindex] = var->dreg;
13873                                                 //mono_inst_set_src_registers (ins, sregs);
13874                                                 live_range_end [sreg] = use_ins;
13875                                                 live_range_end_bb [sreg] = bb;
13876
13877                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13878                                                         MonoInst *tmp;
13879
13880                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13881                                                         /* var->dreg is a hreg */
13882                                                         tmp->inst_c1 = sreg;
13883                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13884                                                 }
13885
13886                                                 continue;
13887                                         }
13888
13889                                         g_assert (var->opcode == OP_REGOFFSET);
13890
13891                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13892
13893                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13894
13895                                         if (vreg_to_lvreg [sreg]) {
13896                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13897
13898                                                 /* The variable is already loaded to an lvreg */
13899                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13900                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13901                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13902                                                 //mono_inst_set_src_registers (ins, sregs);
13903                                                 continue;
13904                                         }
13905
13906                                         /* Try to fuse the load into the instruction */
13907                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13908                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13909                                                 sregs [0] = var->inst_basereg;
13910                                                 //mono_inst_set_src_registers (ins, sregs);
13911                                                 ins->inst_offset = var->inst_offset;
13912                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13913                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13914                                                 sregs [1] = var->inst_basereg;
13915                                                 //mono_inst_set_src_registers (ins, sregs);
13916                                                 ins->inst_offset = var->inst_offset;
13917                                         } else {
13918                                                 if (MONO_IS_REAL_MOVE (ins)) {
13919                                                         ins->opcode = OP_NOP;
13920                                                         sreg = ins->dreg;
13921                                                 } else {
13922                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13923
13924                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13925
13926                                                         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) {
13927                                                                 if (var->dreg == prev_dreg) {
13928                                                                         /*
13929                                                                          * sreg refers to the value loaded by the load
13930                                                                          * emitted below, but we need to use ins->dreg
13931                                                                          * since it refers to the store emitted earlier.
13932                                                                          */
13933                                                                         sreg = ins->dreg;
13934                                                                 }
13935                                                                 g_assert (sreg != -1);
13936                                                                 vreg_to_lvreg [var->dreg] = sreg;
13937                                                                 if (lvregs_len >= lvregs_size) {
13938                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13939                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13940                                                                         lvregs = new_lvregs;
13941                                                                         lvregs_size *= 2;
13942                                                                 }
13943                                                                 lvregs [lvregs_len ++] = var->dreg;
13944                                                         }
13945                                                 }
13946
13947                                                 sregs [srcindex] = sreg;
13948                                                 //mono_inst_set_src_registers (ins, sregs);
13949
13950 #if SIZEOF_REGISTER != 8
13951                                                 if (regtype == 'l') {
13952                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13953                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13954                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13955                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13956                                                         use_ins = load_ins;
13957                                                 }
13958                                                 else
13959 #endif
13960                                                 {
13961 #if SIZEOF_REGISTER == 4
13962                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13963 #endif
13964                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13965                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13966                                                         use_ins = load_ins;
13967                                                 }
13968                                         }
13969
13970                                         if (var->dreg < orig_next_vreg) {
13971                                                 live_range_end [var->dreg] = use_ins;
13972                                                 live_range_end_bb [var->dreg] = bb;
13973                                         }
13974
13975                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13976                                                 MonoInst *tmp;
13977
13978                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13979                                                 tmp->inst_c1 = var->dreg;
13980                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
13981                                         }
13982                                 }
13983                         }
13984                         mono_inst_set_src_registers (ins, sregs);
13985
13986                         if (dest_has_lvreg) {
13987                                 g_assert (ins->dreg != -1);
13988                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
13989                                 if (lvregs_len >= lvregs_size) {
13990                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13991                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13992                                         lvregs = new_lvregs;
13993                                         lvregs_size *= 2;
13994                                 }
13995                                 lvregs [lvregs_len ++] = prev_dreg;
13996                                 dest_has_lvreg = FALSE;
13997                         }
13998
13999                         if (store) {
14000                                 tmp_reg = ins->dreg;
14001                                 ins->dreg = ins->sreg2;
14002                                 ins->sreg2 = tmp_reg;
14003                         }
14004
14005                         if (MONO_IS_CALL (ins)) {
14006                                 /* Clear vreg_to_lvreg array */
14007                                 for (i = 0; i < lvregs_len; i++)
14008                                         vreg_to_lvreg [lvregs [i]] = 0;
14009                                 lvregs_len = 0;
14010                         } else if (ins->opcode == OP_NOP) {
14011                                 ins->dreg = -1;
14012                                 MONO_INST_NULLIFY_SREGS (ins);
14013                         }
14014
14015                         if (cfg->verbose_level > 2)
14016                                 mono_print_ins_index (1, ins);
14017                 }
14018
14019                 /* Extend the live range based on the liveness info */
14020                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14021                         for (i = 0; i < cfg->num_varinfo; i ++) {
14022                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14023
14024                                 if (vreg_is_volatile (cfg, vi->vreg))
14025                                         /* The liveness info is incomplete */
14026                                         continue;
14027
14028                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14029                                         /* Live from at least the first ins of this bb */
14030                                         live_range_start [vi->vreg] = bb->code;
14031                                         live_range_start_bb [vi->vreg] = bb;
14032                                 }
14033
14034                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14035                                         /* Live at least until the last ins of this bb */
14036                                         live_range_end [vi->vreg] = bb->last_ins;
14037                                         live_range_end_bb [vi->vreg] = bb;
14038                                 }
14039                         }
14040                 }
14041         }
14042
14043         /*
14044          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14045          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14046          */
14047         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14048                 for (i = 0; i < cfg->num_varinfo; ++i) {
14049                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14050                         MonoInst *ins;
14051
14052                         if (live_range_start [vreg]) {
14053                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14054                                 ins->inst_c0 = i;
14055                                 ins->inst_c1 = vreg;
14056                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14057                         }
14058                         if (live_range_end [vreg]) {
14059                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14060                                 ins->inst_c0 = i;
14061                                 ins->inst_c1 = vreg;
14062                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14063                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14064                                 else
14065                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14066                         }
14067                 }
14068         }
14069
14070         if (cfg->gsharedvt_locals_var_ins) {
14071                 /* Nullify if unused */
14072                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14073                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14074         }
14075
14076         g_free (live_range_start);
14077         g_free (live_range_end);
14078         g_free (live_range_start_bb);
14079         g_free (live_range_end_bb);
14080 }
14081
14082
14083 /**
14084  * FIXME:
14085  * - use 'iadd' instead of 'int_add'
14086  * - handling ovf opcodes: decompose in method_to_ir.
14087  * - unify iregs/fregs
14088  *   -> partly done, the missing parts are:
14089  *   - a more complete unification would involve unifying the hregs as well, so
14090  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14091  *     would no longer map to the machine hregs, so the code generators would need to
14092  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14093  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14094  *     fp/non-fp branches speeds it up by about 15%.
14095  * - use sext/zext opcodes instead of shifts
14096  * - add OP_ICALL
14097  * - get rid of TEMPLOADs if possible and use vregs instead
14098  * - clean up usage of OP_P/OP_ opcodes
14099  * - cleanup usage of DUMMY_USE
14100  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14101  *   stack
14102  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14103  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14104  * - make sure handle_stack_args () is called before the branch is emitted
14105  * - when the new IR is done, get rid of all unused stuff
14106  * - COMPARE/BEQ as separate instructions or unify them ?
14107  *   - keeping them separate allows specialized compare instructions like
14108  *     compare_imm, compare_membase
14109  *   - most back ends unify fp compare+branch, fp compare+ceq
14110  * - integrate mono_save_args into inline_method
14111  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14112  * - handle long shift opts on 32 bit platforms somehow: they require
14113  *   3 sregs (2 for arg1 and 1 for arg2)
14114  * - make byref a 'normal' type.
14115  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14116  *   variable if needed.
14117  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14118  *   like inline_method.
14119  * - remove inlining restrictions
14120  * - fix LNEG and enable cfold of INEG
14121  * - generalize x86 optimizations like ldelema as a peephole optimization
14122  * - add store_mem_imm for amd64
14123  * - optimize the loading of the interruption flag in the managed->native wrappers
14124  * - avoid special handling of OP_NOP in passes
14125  * - move code inserting instructions into one function/macro.
14126  * - try a coalescing phase after liveness analysis
14127  * - add float -> vreg conversion + local optimizations on !x86
14128  * - figure out how to handle decomposed branches during optimizations, ie.
14129  *   compare+branch, op_jump_table+op_br etc.
14130  * - promote RuntimeXHandles to vregs
14131  * - vtype cleanups:
14132  *   - add a NEW_VARLOADA_VREG macro
14133  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14134  *   accessing vtype fields.
14135  * - get rid of I8CONST on 64 bit platforms
14136  * - dealing with the increase in code size due to branches created during opcode
14137  *   decomposition:
14138  *   - use extended basic blocks
14139  *     - all parts of the JIT
14140  *     - handle_global_vregs () && local regalloc
14141  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14142  * - sources of increase in code size:
14143  *   - vtypes
14144  *   - long compares
14145  *   - isinst and castclass
14146  *   - lvregs not allocated to global registers even if used multiple times
14147  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14148  *   meaningful.
14149  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14150  * - add all micro optimizations from the old JIT
14151  * - put tree optimizations into the deadce pass
14152  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14153  *   specific function.
14154  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14155  *   fcompare + branchCC.
14156  * - create a helper function for allocating a stack slot, taking into account
14157  *   MONO_CFG_HAS_SPILLUP.
14158  * - merge r68207.
14159  * - optimize mono_regstate2_alloc_int/float.
14160  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14161  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14162  *   parts of the tree could be separated by other instructions, killing the tree
14163  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14164  *   instructions if the result of the load is used multiple times ?
14165  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14166  * - LAST MERGE: 108395.
14167  * - when returning vtypes in registers, generate IR and append it to the end of the
14168  *   last bb instead of doing it in the epilog.
14169  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14170  */
14171
14172 /*
14173
14174 NOTES
14175 -----
14176
14177 - When to decompose opcodes:
14178   - earlier: this makes some optimizations hard to implement, since the low level IR
14179   no longer contains the neccessary information. But it is easier to do.
14180   - later: harder to implement, enables more optimizations.
14181 - Branches inside bblocks:
14182   - created when decomposing complex opcodes.
14183     - branches to another bblock: harmless, but not tracked by the branch
14184       optimizations, so need to branch to a label at the start of the bblock.
14185     - branches to inside the same bblock: very problematic, trips up the local
14186       reg allocator. Can be fixed by spitting the current bblock, but that is a
14187       complex operation, since some local vregs can become global vregs etc.
14188 - Local/global vregs:
14189   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14190     local register allocator.
14191   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14192     structure, created by mono_create_var (). Assigned to hregs or the stack by
14193     the global register allocator.
14194 - When to do optimizations like alu->alu_imm:
14195   - earlier -> saves work later on since the IR will be smaller/simpler
14196   - later -> can work on more instructions
14197 - Handling of valuetypes:
14198   - When a vtype is pushed on the stack, a new temporary is created, an
14199     instruction computing its address (LDADDR) is emitted and pushed on
14200     the stack. Need to optimize cases when the vtype is used immediately as in
14201     argument passing, stloc etc.
14202 - Instead of the to_end stuff in the old JIT, simply call the function handling
14203   the values on the stack before emitting the last instruction of the bb.
14204 */
14205
14206 #endif /* !DISABLE_JIT */