mono/mini/method-to-ir.c

   1 /**
   2  * \file
   3  * Convert CIL to the JIT internal representation
   4  *
   5  * Author:
   6  *   Paolo Molaro (lupus@ximian.com)
   7  *   Dietmar Maurer (dietmar@ximian.com)
   8  *
   9  * (C) 2002 Ximian, Inc.
  10  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  11  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  12  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  13  */
  14
  15 #include <config.h>
  16 #include <mono/utils/mono-compiler.h>
  17 #include "mini.h"
  18
  19 #ifndef DISABLE_JIT
  20
  21 #include <signal.h>
  22
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26
  27 #include <math.h>
  28 #include <string.h>
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_SYS_TIME_H
  32 #include <sys/time.h>
  33 #endif
  34
  35 #ifdef HAVE_ALLOCA_H
  36 #include <alloca.h>
  37 #endif
  38
  39 #include <mono/utils/memcheck.h>
  40 #include <mono/metadata/abi-details.h>
  41 #include <mono/metadata/assembly.h>
  42 #include <mono/metadata/attrdefs.h>
  43 #include <mono/metadata/loader.h>
  44 #include <mono/metadata/tabledefs.h>
  45 #include <mono/metadata/class.h>
  46 #include <mono/metadata/object.h>
  47 #include <mono/metadata/exception.h>
  48 #include <mono/metadata/opcodes.h>
  49 #include <mono/metadata/mono-endian.h>
  50 #include <mono/metadata/tokentype.h>
  51 #include <mono/metadata/tabledefs.h>
  52 #include <mono/metadata/marshal.h>
  53 #include <mono/metadata/debug-helpers.h>
  54 #include <mono/metadata/debug-internals.h>
  55 #include <mono/metadata/gc-internals.h>
  56 #include <mono/metadata/security-manager.h>
  57 #include <mono/metadata/threads-types.h>
  58 #include <mono/metadata/security-core-clr.h>
  59 #include <mono/metadata/profiler-private.h>
  60 #include <mono/metadata/profiler.h>
  61 #include <mono/metadata/monitor.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66 #include <mono/utils/mono-threads-coop.h>
  67
  68 #include "trace.h"
  69
  70 #include "ir-emit.h"
  71
  72 #include "jit-icalls.h"
  73 #include "jit.h"
  74 #include "debugger-agent.h"
  75 #include "seq-points.h"
  76 #include "aot-compiler.h"
  77 #include "mini-llvm.h"
  78
  79 #define BRANCH_COST 10
  80 #define INLINE_LENGTH_LIMIT 20
  81
  82 /* These have 'cfg' as an implicit argument */
  83 #define INLINE_FAILURE(msg) do {                                                                        \
  84         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  85                 inline_failure (cfg, msg);                                                                              \
  86                 goto exception_exit;                                                                                    \
  87         } \
  88         } while (0)
  89 #define CHECK_CFG_EXCEPTION do {\
  90                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  91                         goto exception_exit;                                            \
  92         } while (0)
  93 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  94                 field_access_failure ((cfg), (method), (field));                        \
  95                 goto exception_exit;    \
  96         } while (0)
  97 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  98                 if (cfg->gshared) {                                                                     \
  99                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 100                         goto exception_exit;    \
 101                 }                       \
 102         } while (0)
 103 #define GSHAREDVT_FAILURE(opcode) do {          \
 104         if (cfg->gsharedvt) {                                                                                           \
 105                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 106                 goto exception_exit;                                                                                    \
 107         }                                                                                                                                       \
 108         } while (0)
 109 #define OUT_OF_MEMORY_FAILURE do {      \
 110                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 111                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 112                 goto exception_exit;    \
 113         } while (0)
 114 #define DISABLE_AOT(cfg) do { \
 115                 if ((cfg)->verbose_level >= 2)                                            \
 116                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 117                 (cfg)->disable_aot = TRUE;                                                        \
 118         } while (0)
 119 #define LOAD_ERROR do { \
 120                 break_on_unverified ();                                                         \
 121                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 122                 goto exception_exit;                                                                    \
 123         } while (0)
 124
 125 #define TYPE_LOAD_ERROR(klass) do { \
 126                 cfg->exception_ptr = klass; \
 127                 LOAD_ERROR;                                     \
 128         } while (0)
 129
 130 #define CHECK_CFG_ERROR do {\
 131                 if (!mono_error_ok (&cfg->error)) { \
 132                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 133                         goto mono_error_exit; \
 134                 } \
 135         } while (0)
 136
 137 /* Determine whenever 'ins' represents a load of the 'this' argument */
 138 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 139
 140 static int ldind_to_load_membase (int opcode);
 141 static int stind_to_store_membase (int opcode);
 142
 143 int mono_op_to_op_imm (int opcode);
 144 int mono_op_to_op_imm_noemul (int opcode);
 145
 146 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 147                                                   guchar *ip, guint real_offset, gboolean inline_always);
 148 static MonoInst*
 149 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 150
 151 /* helper methods signatures */
 152 static MonoMethodSignature *helper_sig_domain_get;
 153 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 154 static MonoMethodSignature *helper_sig_llvmonly_imt_trampoline;
 155 static MonoMethodSignature *helper_sig_jit_thread_attach;
 156 static MonoMethodSignature *helper_sig_get_tls_tramp;
 157 static MonoMethodSignature *helper_sig_set_tls_tramp;
 158
 159 /* type loading helpers */
 160 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, "System.Runtime.CompilerServices", "RuntimeHelpers")
 161 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, "System.Diagnostics", "DebuggableAttribute")
 162
 163 /*
 164  * Instruction metadata
 165  */
 166 #ifdef MINI_OP
 167 #undef MINI_OP
 168 #endif
 169 #ifdef MINI_OP3
 170 #undef MINI_OP3
 171 #endif
 172 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 173 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 174 #define NONE ' '
 175 #define IREG 'i'
 176 #define FREG 'f'
 177 #define VREG 'v'
 178 #define XREG 'x'
 179 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 180 #define LREG IREG
 181 #else
 182 #define LREG 'l'
 183 #endif
 184 /* keep in sync with the enum in mini.h */
 185 const char
 186 ins_info[] = {
 187 #include "mini-ops.h"
 188 };
 189 #undef MINI_OP
 190 #undef MINI_OP3
 191
 192 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 193 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 194 /*
 195  * This should contain the index of the last sreg + 1. This is not the same
 196  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 197  */
 198 const gint8 ins_sreg_counts[] = {
 199 #include "mini-ops.h"
 200 };
 201 #undef MINI_OP
 202 #undef MINI_OP3
 203
 204 guint32
 205 mono_alloc_ireg (MonoCompile *cfg)
 206 {
 207         return alloc_ireg (cfg);
 208 }
 209
 210 guint32
 211 mono_alloc_lreg (MonoCompile *cfg)
 212 {
 213         return alloc_lreg (cfg);
 214 }
 215
 216 guint32
 217 mono_alloc_freg (MonoCompile *cfg)
 218 {
 219         return alloc_freg (cfg);
 220 }
 221
 222 guint32
 223 mono_alloc_preg (MonoCompile *cfg)
 224 {
 225         return alloc_preg (cfg);
 226 }
 227
 228 guint32
 229 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 230 {
 231         return alloc_dreg (cfg, stack_type);
 232 }
 233
 234 /*
 235  * mono_alloc_ireg_ref:
 236  *
 237  *   Allocate an IREG, and mark it as holding a GC ref.
 238  */
 239 guint32
 240 mono_alloc_ireg_ref (MonoCompile *cfg)
 241 {
 242         return alloc_ireg_ref (cfg);
 243 }
 244
 245 /*
 246  * mono_alloc_ireg_mp:
 247  *
 248  *   Allocate an IREG, and mark it as holding a managed pointer.
 249  */
 250 guint32
 251 mono_alloc_ireg_mp (MonoCompile *cfg)
 252 {
 253         return alloc_ireg_mp (cfg);
 254 }
 255
 256 /*
 257  * mono_alloc_ireg_copy:
 258  *
 259  *   Allocate an IREG with the same GC type as VREG.
 260  */
 261 guint32
 262 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 263 {
 264         if (vreg_is_ref (cfg, vreg))
 265                 return alloc_ireg_ref (cfg);
 266         else if (vreg_is_mp (cfg, vreg))
 267                 return alloc_ireg_mp (cfg);
 268         else
 269                 return alloc_ireg (cfg);
 270 }
 271
 272 guint
 273 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 274 {
 275         if (type->byref)
 276                 return OP_MOVE;
 277
 278         type = mini_get_underlying_type (type);
 279 handle_enum:
 280         switch (type->type) {
 281         case MONO_TYPE_I1:
 282         case MONO_TYPE_U1:
 283                 return OP_MOVE;
 284         case MONO_TYPE_I2:
 285         case MONO_TYPE_U2:
 286                 return OP_MOVE;
 287         case MONO_TYPE_I4:
 288         case MONO_TYPE_U4:
 289                 return OP_MOVE;
 290         case MONO_TYPE_I:
 291         case MONO_TYPE_U:
 292         case MONO_TYPE_PTR:
 293         case MONO_TYPE_FNPTR:
 294                 return OP_MOVE;
 295         case MONO_TYPE_CLASS:
 296         case MONO_TYPE_STRING:
 297         case MONO_TYPE_OBJECT:
 298         case MONO_TYPE_SZARRAY:
 299         case MONO_TYPE_ARRAY:
 300                 return OP_MOVE;
 301         case MONO_TYPE_I8:
 302         case MONO_TYPE_U8:
 303 #if SIZEOF_REGISTER == 8
 304                 return OP_MOVE;
 305 #else
 306                 return OP_LMOVE;
 307 #endif
 308         case MONO_TYPE_R4:
 309                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 310         case MONO_TYPE_R8:
 311                 return OP_FMOVE;
 312         case MONO_TYPE_VALUETYPE:
 313                 if (type->data.klass->enumtype) {
 314                         type = mono_class_enum_basetype (type->data.klass);
 315                         goto handle_enum;
 316                 }
 317                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 318                         return OP_XMOVE;
 319                 return OP_VMOVE;
 320         case MONO_TYPE_TYPEDBYREF:
 321                 return OP_VMOVE;
 322         case MONO_TYPE_GENERICINST:
 323                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 324                         return OP_XMOVE;
 325                 type = &type->data.generic_class->container_class->byval_arg;
 326                 goto handle_enum;
 327         case MONO_TYPE_VAR:
 328         case MONO_TYPE_MVAR:
 329                 g_assert (cfg->gshared);
 330                 if (mini_type_var_is_vt (type))
 331                         return OP_VMOVE;
 332                 else
 333                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 334         default:
 335                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 336         }
 337         return -1;
 338 }
 339
 340 void
 341 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 342 {
 343         int i;
 344         MonoInst *tree;
 345         GString *str = g_string_new ("");
 346
 347         g_string_append_printf (str, "%s %d: [IN: ", msg, bb->block_num);
 348         for (i = 0; i < bb->in_count; ++i)
 349                 g_string_append_printf (str, " BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 350         g_string_append_printf (str, ", OUT: ");
 351         for (i = 0; i < bb->out_count; ++i)
 352                 g_string_append_printf (str, " BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 353         g_string_append_printf (str, " ]\n");
 354
 355         g_print ("%s", str->str);
 356         g_string_free (str, TRUE);
 357
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_trampoline = mono_create_icall_signature ("ptr ptr ptr");
 368         helper_sig_jit_thread_attach = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_get_tls_tramp = mono_create_icall_signature ("ptr");
 370         helper_sig_set_tls_tramp = mono_create_icall_signature ("void ptr");
 371 }
 372
 373 static MONO_NEVER_INLINE void
 374 break_on_unverified (void)
 375 {
 376         if (mini_get_debug_options ()->break_on_unverified)
 377                 G_BREAKPOINT ();
 378 }
 379
 380 static MONO_NEVER_INLINE void
 381 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *field_fname = mono_field_full_name (field);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (field_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 inline_failure (MonoCompile *cfg, const char *msg)
 393 {
 394         if (cfg->verbose_level >= 2)
 395                 printf ("inline failed: %s\n", msg);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 397 }
 398
 399 static MONO_NEVER_INLINE void
 400 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 401 {
 402         if (cfg->verbose_level > 2)                                                                                     \
 403                 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), line);
 404         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 405 }
 406
 407 static MONO_NEVER_INLINE void
 408 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 409 {
 410         cfg->exception_message = g_strdup_printf ("gsharedvt failed for method %s.%s.%s/%d opcode %s %s:%d", cfg->current_method->klass->name_space, cfg->current_method->klass->name, cfg->current_method->name, cfg->current_method->signature->param_count, mono_opcode_name ((opcode)), file, line);
 411         if (cfg->verbose_level >= 2)
 412                 printf ("%s\n", cfg->exception_message);
 413         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 414 }
 415
 416 /*
 417  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 418  * foo<T> (int i) { ldarg.0; box T; }
 419  */
 420 #define UNVERIFIED do { \
 421         if (cfg->gsharedvt) { \
 422                 if (cfg->verbose_level > 2)                                                                     \
 423                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 424                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 425                 goto exception_exit;                                                                                    \
 426         }                                                                                                                                       \
 427         break_on_unverified ();                                                                                         \
 428         goto unverified;                                                                                                        \
 429 } while (0)
 430
 431 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 432                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 433                 if (!(tblock)) {        \
 434                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 435             NEW_BBLOCK (cfg, (tblock)); \
 436                         (tblock)->cil_code = (ip);      \
 437                         ADD_BBLOCK (cfg, (tblock));     \
 438                 } \
 439         } while (0)
 440
 441 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 442 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 443                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 444                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 445                 (dest)->sreg1 = (sr1); \
 446                 (dest)->sreg2 = (sr2); \
 447                 (dest)->inst_imm = (imm); \
 448                 (dest)->backend.shift_amount = (shift); \
 449                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 450         } while (0)
 451 #endif
 452
 453 /* Emit conversions so both operands of a binary opcode are of the same type */
 454 static void
 455 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 456 {
 457         MonoInst *arg1 = *arg1_ref;
 458         MonoInst *arg2 = *arg2_ref;
 459
 460         if (cfg->r4fp &&
 461                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 462                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 463                 MonoInst *conv;
 464
 465                 /* Mixing r4/r8 is allowed by the spec */
 466                 if (arg1->type == STACK_R4) {
 467                         int dreg = alloc_freg (cfg);
 468
 469                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 470                         conv->type = STACK_R8;
 471                         ins->sreg1 = dreg;
 472                         *arg1_ref = conv;
 473                 }
 474                 if (arg2->type == STACK_R4) {
 475                         int dreg = alloc_freg (cfg);
 476
 477                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 478                         conv->type = STACK_R8;
 479                         ins->sreg2 = dreg;
 480                         *arg2_ref = conv;
 481                 }
 482         }
 483
 484 #if SIZEOF_REGISTER == 8
 485         /* FIXME: Need to add many more cases */
 486         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 487                 MonoInst *widen;
 488
 489                 int dr = alloc_preg (cfg);
 490                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 491                 (ins)->sreg2 = widen->dreg;
 492         }
 493 #endif
 494 }
 495
 496 #define ADD_BINOP(op) do {      \
 497                 MONO_INST_NEW (cfg, ins, (op)); \
 498                 sp -= 2;        \
 499                 ins->sreg1 = sp [0]->dreg;      \
 500                 ins->sreg2 = sp [1]->dreg;      \
 501                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 502                 CHECK_TYPE (ins);       \
 503                 /* Have to insert a widening op */               \
 504         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 505         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 506         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 507         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 508         } while (0)
 509
 510 #define ADD_UNOP(op) do {       \
 511                 MONO_INST_NEW (cfg, ins, (op)); \
 512                 sp--;   \
 513                 ins->sreg1 = sp [0]->dreg;      \
 514                 type_from_op (cfg, ins, sp [0], NULL);  \
 515                 CHECK_TYPE (ins);       \
 516         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 517         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 518                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 519         } while (0)
 520
 521 #define ADD_BINCOND(next_block) do {    \
 522                 MonoInst *cmp;  \
 523                 sp -= 2; \
 524                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 525                 cmp->sreg1 = sp [0]->dreg;      \
 526                 cmp->sreg2 = sp [1]->dreg;      \
 527                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 528                 CHECK_TYPE (cmp);       \
 529                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 530                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 531                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 532                 GET_BBLOCK (cfg, tblock, target);               \
 533                 link_bblock (cfg, cfg->cbb, tblock);    \
 534                 ins->inst_true_bb = tblock;     \
 535                 if ((next_block)) {     \
 536                         link_bblock (cfg, cfg->cbb, (next_block));      \
 537                         ins->inst_false_bb = (next_block);      \
 538                         start_new_bblock = 1;   \
 539                 } else {        \
 540                         GET_BBLOCK (cfg, tblock, ip);           \
 541                         link_bblock (cfg, cfg->cbb, tblock);    \
 542                         ins->inst_false_bb = tblock;    \
 543                         start_new_bblock = 2;   \
 544                 }       \
 545                 if (sp != stack_start) {                                                                        \
 546                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 547                         CHECK_UNVERIFIABLE (cfg); \
 548                 } \
 549         MONO_ADD_INS (cfg->cbb, cmp); \
 550                 MONO_ADD_INS (cfg->cbb, ins);   \
 551         } while (0)
 552
 553 /* *
 554  * link_bblock: Links two basic blocks
 555  *
 556  * links two basic blocks in the control flow graph, the 'from'
 557  * argument is the starting block and the 'to' argument is the block
 558  * the control flow ends to after 'from'.
 559  */
 560 static void
 561 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 562 {
 563         MonoBasicBlock **newa;
 564         int i, found;
 565
 566 #if 0
 567         if (from->cil_code) {
 568                 if (to->cil_code)
 569                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 570                 else
 571                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 572         } else {
 573                 if (to->cil_code)
 574                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 575                 else
 576                         printf ("edge from entry to exit\n");
 577         }
 578 #endif
 579
 580         found = FALSE;
 581         for (i = 0; i < from->out_count; ++i) {
 582                 if (to == from->out_bb [i]) {
 583                         found = TRUE;
 584                         break;
 585                 }
 586         }
 587         if (!found) {
 588                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 589                 for (i = 0; i < from->out_count; ++i) {
 590                         newa [i] = from->out_bb [i];
 591                 }
 592                 newa [i] = to;
 593                 from->out_count++;
 594                 from->out_bb = newa;
 595         }
 596
 597         found = FALSE;
 598         for (i = 0; i < to->in_count; ++i) {
 599                 if (from == to->in_bb [i]) {
 600                         found = TRUE;
 601                         break;
 602                 }
 603         }
 604         if (!found) {
 605                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 606                 for (i = 0; i < to->in_count; ++i) {
 607                         newa [i] = to->in_bb [i];
 608                 }
 609                 newa [i] = from;
 610                 to->in_count++;
 611                 to->in_bb = newa;
 612         }
 613 }
 614
 615 void
 616 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 617 {
 618         link_bblock (cfg, from, to);
 619 }
 620
 621 /**
 622  * mono_find_block_region:
 623  *
 624  *   We mark each basic block with a region ID. We use that to avoid BB
 625  *   optimizations when blocks are in different regions.
 626  *
 627  * Returns:
 628  *   A region token that encodes where this region is, and information
 629  *   about the clause owner for this block.
 630  *
 631  *   The region encodes the try/catch/filter clause that owns this block
 632  *   as well as the type.  -1 is a special value that represents a block
 633  *   that is in none of try/catch/filter.
 634  */
 635 static int
 636 mono_find_block_region (MonoCompile *cfg, int offset)
 637 {
 638         MonoMethodHeader *header = cfg->header;
 639         MonoExceptionClause *clause;
 640         int i;
 641
 642         for (i = 0; i < header->num_clauses; ++i) {
 643                 clause = &header->clauses [i];
 644                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 645                     (offset < (clause->handler_offset)))
 646                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 647
 648                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 649                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 650                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 651                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 652                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 653                         else
 654                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 655                 }
 656         }
 657         for (i = 0; i < header->num_clauses; ++i) {
 658                 clause = &header->clauses [i];
 659
 660                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 661                         return ((i + 1) << 8) | clause->flags;
 662         }
 663
 664         return -1;
 665 }
 666
 667 static gboolean
 668 ip_in_finally_clause (MonoCompile *cfg, int offset)
 669 {
 670         MonoMethodHeader *header = cfg->header;
 671         MonoExceptionClause *clause;
 672         int i;
 673
 674         for (i = 0; i < header->num_clauses; ++i) {
 675                 clause = &header->clauses [i];
 676                 if (clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FAULT)
 677                         continue;
 678
 679                 if (MONO_OFFSET_IN_HANDLER (clause, offset))
 680                         return TRUE;
 681         }
 682         return FALSE;
 683 }
 684
 685 static GList*
 686 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 687 {
 688         MonoMethodHeader *header = cfg->header;
 689         MonoExceptionClause *clause;
 690         int i;
 691         GList *res = NULL;
 692
 693         for (i = 0; i < header->num_clauses; ++i) {
 694                 clause = &header->clauses [i];
 695                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 696                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 697                         if (clause->flags == type)
 698                                 res = g_list_append (res, clause);
 699                 }
 700         }
 701         return res;
 702 }
 703
 704 static void
 705 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 706 {
 707         MonoInst *var;
 708
 709         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 710         if (var)
 711                 return;
 712
 713         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 714         /* prevent it from being register allocated */
 715         var->flags |= MONO_INST_VOLATILE;
 716
 717         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 718 }
 719
 720 MonoInst *
 721 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 722 {
 723         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724 }
 725
 726 static MonoInst*
 727 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 728 {
 729         MonoInst *var;
 730
 731         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 732         if (var)
 733                 return var;
 734
 735         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 736         /* prevent it from being register allocated */
 737         var->flags |= MONO_INST_VOLATILE;
 738
 739         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 740
 741         return var;
 742 }
 743
 744 /*
 745  * Returns the type used in the eval stack when @type is loaded.
 746  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 747  */
 748 void
 749 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 750 {
 751         MonoClass *klass;
 752
 753         type = mini_get_underlying_type (type);
 754         inst->klass = klass = mono_class_from_mono_type (type);
 755         if (type->byref) {
 756                 inst->type = STACK_MP;
 757                 return;
 758         }
 759
 760 handle_enum:
 761         switch (type->type) {
 762         case MONO_TYPE_VOID:
 763                 inst->type = STACK_INV;
 764                 return;
 765         case MONO_TYPE_I1:
 766         case MONO_TYPE_U1:
 767         case MONO_TYPE_I2:
 768         case MONO_TYPE_U2:
 769         case MONO_TYPE_I4:
 770         case MONO_TYPE_U4:
 771                 inst->type = STACK_I4;
 772                 return;
 773         case MONO_TYPE_I:
 774         case MONO_TYPE_U:
 775         case MONO_TYPE_PTR:
 776         case MONO_TYPE_FNPTR:
 777                 inst->type = STACK_PTR;
 778                 return;
 779         case MONO_TYPE_CLASS:
 780         case MONO_TYPE_STRING:
 781         case MONO_TYPE_OBJECT:
 782         case MONO_TYPE_SZARRAY:
 783         case MONO_TYPE_ARRAY:
 784                 inst->type = STACK_OBJ;
 785                 return;
 786         case MONO_TYPE_I8:
 787         case MONO_TYPE_U8:
 788                 inst->type = STACK_I8;
 789                 return;
 790         case MONO_TYPE_R4:
 791                 inst->type = cfg->r4_stack_type;
 792                 break;
 793         case MONO_TYPE_R8:
 794                 inst->type = STACK_R8;
 795                 return;
 796         case MONO_TYPE_VALUETYPE:
 797                 if (type->data.klass->enumtype) {
 798                         type = mono_class_enum_basetype (type->data.klass);
 799                         goto handle_enum;
 800                 } else {
 801                         inst->klass = klass;
 802                         inst->type = STACK_VTYPE;
 803                         return;
 804                 }
 805         case MONO_TYPE_TYPEDBYREF:
 806                 inst->klass = mono_defaults.typed_reference_class;
 807                 inst->type = STACK_VTYPE;
 808                 return;
 809         case MONO_TYPE_GENERICINST:
 810                 type = &type->data.generic_class->container_class->byval_arg;
 811                 goto handle_enum;
 812         case MONO_TYPE_VAR:
 813         case MONO_TYPE_MVAR:
 814                 g_assert (cfg->gshared);
 815                 if (mini_is_gsharedvt_type (type)) {
 816                         g_assert (cfg->gsharedvt);
 817                         inst->type = STACK_VTYPE;
 818                 } else {
 819                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 820                 }
 821                 return;
 822         default:
 823                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 824         }
 825 }
 826
 827 /*
 828  * The following tables are used to quickly validate the IL code in type_from_op ().
 829  */
 830 static const char
 831 bin_num_table [STACK_MAX] [STACK_MAX] = {
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 837         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 838         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 839         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 840         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 841 };
 842
 843 static const char
 844 neg_table [] = {
 845         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 846 };
 847
 848 /* reduce the size of this table */
 849 static const char
 850 bin_int_table [STACK_MAX] [STACK_MAX] = {
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 852         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 853         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 854         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 855         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 856         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 859 };
 860
 861 static const char
 862 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 863 /*      Inv i  L  p  F  &  O  vt r4 */
 864         {0},
 865         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 866         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 867         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 868         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 869         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 870         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 871         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 872         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 873 };
 874
 875 /* reduce the size of this table */
 876 static const char
 877 shift_table [STACK_MAX] [STACK_MAX] = {
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 879         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 880         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 881         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 882         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 883         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 884         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 885         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 886 };
 887
 888 /*
 889  * Tables to map from the non-specific opcode to the matching
 890  * type-specific opcode.
 891  */
 892 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 893 static const guint16
 894 binops_op_map [STACK_MAX] = {
 895         0, OP_IADD-CEE_ADD, OP_LADD-CEE_ADD, OP_PADD-CEE_ADD, OP_FADD-CEE_ADD, OP_PADD-CEE_ADD, 0, 0, OP_RADD-CEE_ADD
 896 };
 897
 898 /* handles from CEE_NEG to CEE_CONV_U8 */
 899 static const guint16
 900 unops_op_map [STACK_MAX] = {
 901         0, OP_INEG-CEE_NEG, OP_LNEG-CEE_NEG, OP_PNEG-CEE_NEG, OP_FNEG-CEE_NEG, OP_PNEG-CEE_NEG, 0, 0, OP_RNEG-CEE_NEG
 902 };
 903
 904 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 905 static const guint16
 906 ovfops_op_map [STACK_MAX] = {
 907         0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, 0, OP_RCONV_TO_U2-CEE_CONV_U2
 908 };
 909
 910 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 911 static const guint16
 912 ovf2ops_op_map [STACK_MAX] = {
 913         0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, 0, 0, OP_RCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
 914 };
 915
 916 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 917 static const guint16
 918 ovf3ops_op_map [STACK_MAX] = {
 919         0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, 0, 0, OP_RCONV_TO_OVF_I1-CEE_CONV_OVF_I1
 920 };
 921
 922 /* handles from CEE_BEQ to CEE_BLT_UN */
 923 static const guint16
 924 beqops_op_map [STACK_MAX] = {
 925         0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, 0, OP_FBEQ-CEE_BEQ
 926 };
 927
 928 /* handles from CEE_CEQ to CEE_CLT_UN */
 929 static const guint16
 930 ceqops_op_map [STACK_MAX] = {
 931         0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, 0, OP_RCEQ-OP_CEQ
 932 };
 933
 934 /*
 935  * Sets ins->type (the type on the eval stack) according to the
 936  * type of the opcode and the arguments to it.
 937  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 938  *
 939  * FIXME: this function sets ins->type unconditionally in some cases, but
 940  * it should set it to invalid for some types (a conv.x on an object)
 941  */
 942 static void
 943 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 944 {
 945         switch (ins->opcode) {
 946         /* binops */
 947         case CEE_ADD:
 948         case CEE_SUB:
 949         case CEE_MUL:
 950         case CEE_DIV:
 951         case CEE_REM:
 952                 /* FIXME: check unverifiable args for STACK_MP */
 953                 ins->type = bin_num_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_DIV_UN:
 957         case CEE_REM_UN:
 958         case CEE_AND:
 959         case CEE_OR:
 960         case CEE_XOR:
 961                 ins->type = bin_int_table [src1->type] [src2->type];
 962                 ins->opcode += binops_op_map [ins->type];
 963                 break;
 964         case CEE_SHL:
 965         case CEE_SHR:
 966         case CEE_SHR_UN:
 967                 ins->type = shift_table [src1->type] [src2->type];
 968                 ins->opcode += binops_op_map [ins->type];
 969                 break;
 970         case OP_COMPARE:
 971         case OP_LCOMPARE:
 972         case OP_ICOMPARE:
 973                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 974                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 975                         ins->opcode = OP_LCOMPARE;
 976                 else if (src1->type == STACK_R4)
 977                         ins->opcode = OP_RCOMPARE;
 978                 else if (src1->type == STACK_R8)
 979                         ins->opcode = OP_FCOMPARE;
 980                 else
 981                         ins->opcode = OP_ICOMPARE;
 982                 break;
 983         case OP_ICOMPARE_IMM:
 984                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 985                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 986                         ins->opcode = OP_LCOMPARE_IMM;
 987                 break;
 988         case CEE_BEQ:
 989         case CEE_BGE:
 990         case CEE_BGT:
 991         case CEE_BLE:
 992         case CEE_BLT:
 993         case CEE_BNE_UN:
 994         case CEE_BGE_UN:
 995         case CEE_BGT_UN:
 996         case CEE_BLE_UN:
 997         case CEE_BLT_UN:
 998                 ins->opcode += beqops_op_map [src1->type];
 999                 break;
1000         case OP_CEQ:
1001                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         case OP_CGT:
1005         case OP_CGT_UN:
1006         case OP_CLT:
1007         case OP_CLT_UN:
1008                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1009                 ins->opcode += ceqops_op_map [src1->type];
1010                 break;
1011         /* unops */
1012         case CEE_NEG:
1013                 ins->type = neg_table [src1->type];
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_NOT:
1017                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1018                         ins->type = src1->type;
1019                 else
1020                         ins->type = STACK_INV;
1021                 ins->opcode += unops_op_map [ins->type];
1022                 break;
1023         case CEE_CONV_I1:
1024         case CEE_CONV_I2:
1025         case CEE_CONV_I4:
1026         case CEE_CONV_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += unops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_R_UN:
1031                 ins->type = STACK_R8;
1032                 switch (src1->type) {
1033                 case STACK_I4:
1034                 case STACK_PTR:
1035                         ins->opcode = OP_ICONV_TO_R_UN;
1036                         break;
1037                 case STACK_I8:
1038                         ins->opcode = OP_LCONV_TO_R_UN;
1039                         break;
1040                 }
1041                 break;
1042         case CEE_CONV_OVF_I1:
1043         case CEE_CONV_OVF_U1:
1044         case CEE_CONV_OVF_I2:
1045         case CEE_CONV_OVF_U2:
1046         case CEE_CONV_OVF_I4:
1047         case CEE_CONV_OVF_U4:
1048                 ins->type = STACK_I4;
1049                 ins->opcode += ovf3ops_op_map [src1->type];
1050                 break;
1051         case CEE_CONV_OVF_I_UN:
1052         case CEE_CONV_OVF_U_UN:
1053                 ins->type = STACK_PTR;
1054                 ins->opcode += ovf2ops_op_map [src1->type];
1055                 break;
1056         case CEE_CONV_OVF_I1_UN:
1057         case CEE_CONV_OVF_I2_UN:
1058         case CEE_CONV_OVF_I4_UN:
1059         case CEE_CONV_OVF_U1_UN:
1060         case CEE_CONV_OVF_U2_UN:
1061         case CEE_CONV_OVF_U4_UN:
1062                 ins->type = STACK_I4;
1063                 ins->opcode += ovf2ops_op_map [src1->type];
1064                 break;
1065         case CEE_CONV_U:
1066                 ins->type = STACK_PTR;
1067                 switch (src1->type) {
1068                 case STACK_I4:
1069                         ins->opcode = OP_ICONV_TO_U;
1070                         break;
1071                 case STACK_PTR:
1072                 case STACK_MP:
1073 #if SIZEOF_VOID_P == 8
1074                         ins->opcode = OP_LCONV_TO_U;
1075 #else
1076                         ins->opcode = OP_MOVE;
1077 #endif
1078                         break;
1079                 case STACK_I8:
1080                         ins->opcode = OP_LCONV_TO_U;
1081                         break;
1082                 case STACK_R8:
1083                         ins->opcode = OP_FCONV_TO_U;
1084                         break;
1085                 }
1086                 break;
1087         case CEE_CONV_I8:
1088         case CEE_CONV_U8:
1089                 ins->type = STACK_I8;
1090                 ins->opcode += unops_op_map [src1->type];
1091                 break;
1092         case CEE_CONV_OVF_I8:
1093         case CEE_CONV_OVF_U8:
1094                 ins->type = STACK_I8;
1095                 ins->opcode += ovf3ops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_OVF_U8_UN:
1098         case CEE_CONV_OVF_I8_UN:
1099                 ins->type = STACK_I8;
1100                 ins->opcode += ovf2ops_op_map [src1->type];
1101                 break;
1102         case CEE_CONV_R4:
1103                 ins->type = cfg->r4_stack_type;
1104                 ins->opcode += unops_op_map [src1->type];
1105                 break;
1106         case CEE_CONV_R8:
1107                 ins->type = STACK_R8;
1108                 ins->opcode += unops_op_map [src1->type];
1109                 break;
1110         case OP_CKFINITE:
1111                 ins->type = STACK_R8;
1112                 break;
1113         case CEE_CONV_U2:
1114         case CEE_CONV_U1:
1115                 ins->type = STACK_I4;
1116                 ins->opcode += ovfops_op_map [src1->type];
1117                 break;
1118         case CEE_CONV_I:
1119         case CEE_CONV_OVF_I:
1120         case CEE_CONV_OVF_U:
1121                 ins->type = STACK_PTR;
1122                 ins->opcode += ovfops_op_map [src1->type];
1123                 break;
1124         case CEE_ADD_OVF:
1125         case CEE_ADD_OVF_UN:
1126         case CEE_MUL_OVF:
1127         case CEE_MUL_OVF_UN:
1128         case CEE_SUB_OVF:
1129         case CEE_SUB_OVF_UN:
1130                 ins->type = bin_num_table [src1->type] [src2->type];
1131                 ins->opcode += ovfops_op_map [src1->type];
1132                 if (ins->type == STACK_R8)
1133                         ins->type = STACK_INV;
1134                 break;
1135         case OP_LOAD_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI1_MEMBASE:
1139         case OP_LOADU1_MEMBASE:
1140         case OP_LOADI2_MEMBASE:
1141         case OP_LOADU2_MEMBASE:
1142         case OP_LOADI4_MEMBASE:
1143         case OP_LOADU4_MEMBASE:
1144                 ins->type = STACK_PTR;
1145                 break;
1146         case OP_LOADI8_MEMBASE:
1147                 ins->type = STACK_I8;
1148                 break;
1149         case OP_LOADR4_MEMBASE:
1150                 ins->type = cfg->r4_stack_type;
1151                 break;
1152         case OP_LOADR8_MEMBASE:
1153                 ins->type = STACK_R8;
1154                 break;
1155         default:
1156                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1157                 break;
1158         }
1159
1160         if (ins->type == STACK_MP)
1161                 ins->klass = mono_defaults.object_class;
1162 }
1163
1164 static MonoClass*
1165 ldind_to_type (int op)
1166 {
1167         switch (op) {
1168         case CEE_LDIND_I1: return mono_defaults.sbyte_class;
1169         case CEE_LDIND_U1: return mono_defaults.byte_class;
1170         case CEE_LDIND_I2: return mono_defaults.int16_class;
1171         case CEE_LDIND_U2: return mono_defaults.uint16_class;
1172         case CEE_LDIND_I4: return mono_defaults.int32_class;
1173         case CEE_LDIND_U4: return mono_defaults.uint32_class;
1174         case CEE_LDIND_I8: return mono_defaults.int64_class;
1175         case CEE_LDIND_I: return mono_defaults.int_class;
1176         case CEE_LDIND_R4: return mono_defaults.single_class;
1177         case CEE_LDIND_R8: return mono_defaults.double_class;
1178         case CEE_LDIND_REF:return mono_defaults.object_class; //FIXME we should try to return a more specific type
1179         default: g_error ("Unknown ldind type %d", op);
1180         }
1181 }
1182
1183 #if 0
1184
1185 static const char
1186 param_table [STACK_MAX] [STACK_MAX] = {
1187         {0},
1188 };
1189
1190 static int
1191 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1192 {
1193         int i;
1194
1195         if (sig->hasthis) {
1196                 switch (args->type) {
1197                 case STACK_I4:
1198                 case STACK_I8:
1199                 case STACK_R8:
1200                 case STACK_VTYPE:
1201                 case STACK_INV:
1202                         return 0;
1203                 }
1204                 args++;
1205         }
1206         for (i = 0; i < sig->param_count; ++i) {
1207                 switch (args [i].type) {
1208                 case STACK_INV:
1209                         return 0;
1210                 case STACK_MP:
1211                         if (!sig->params [i]->byref)
1212                                 return 0;
1213                         continue;
1214                 case STACK_OBJ:
1215                         if (sig->params [i]->byref)
1216                                 return 0;
1217                         switch (sig->params [i]->type) {
1218                         case MONO_TYPE_CLASS:
1219                         case MONO_TYPE_STRING:
1220                         case MONO_TYPE_OBJECT:
1221                         case MONO_TYPE_SZARRAY:
1222                         case MONO_TYPE_ARRAY:
1223                                 break;
1224                         default:
1225                                 return 0;
1226                         }
1227                         continue;
1228                 case STACK_R8:
1229                         if (sig->params [i]->byref)
1230                                 return 0;
1231                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1232                                 return 0;
1233                         continue;
1234                 case STACK_PTR:
1235                 case STACK_I4:
1236                 case STACK_I8:
1237                 case STACK_VTYPE:
1238                         break;
1239                 }
1240                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1241                         return 0;*/
1242         }
1243         return 1;
1244 }
1245 #endif
1246
1247 /*
1248  * When we need a pointer to the current domain many times in a method, we
1249  * call mono_domain_get() once and we store the result in a local variable.
1250  * This function returns the variable that represents the MonoDomain*.
1251  */
1252 inline static MonoInst *
1253 mono_get_domainvar (MonoCompile *cfg)
1254 {
1255         if (!cfg->domainvar)
1256                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1257         return cfg->domainvar;
1258 }
1259
1260 /*
1261  * The got_var contains the address of the Global Offset Table when AOT
1262  * compiling.
1263  */
1264 MonoInst *
1265 mono_get_got_var (MonoCompile *cfg)
1266 {
1267         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1268                 return NULL;
1269         if (!cfg->got_var) {
1270                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1271         }
1272         return cfg->got_var;
1273 }
1274
1275 static void
1276 mono_create_rgctx_var (MonoCompile *cfg)
1277 {
1278         if (!cfg->rgctx_var) {
1279                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1280                 /* force the var to be stack allocated */
1281                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1282         }
1283 }
1284
1285 static MonoInst *
1286 mono_get_vtable_var (MonoCompile *cfg)
1287 {
1288         g_assert (cfg->gshared);
1289
1290         mono_create_rgctx_var (cfg);
1291
1292         return cfg->rgctx_var;
1293 }
1294
1295 static MonoType*
1296 type_from_stack_type (MonoInst *ins) {
1297         switch (ins->type) {
1298         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1299         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1300         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1301         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1302         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1303         case STACK_MP:
1304                 return &ins->klass->this_arg;
1305         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1306         case STACK_VTYPE: return &ins->klass->byval_arg;
1307         default:
1308                 g_error ("stack type %d to monotype not handled\n", ins->type);
1309         }
1310         return NULL;
1311 }
1312
1313 static G_GNUC_UNUSED int
1314 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1315 {
1316         t = mono_type_get_underlying_type (t);
1317         switch (t->type) {
1318         case MONO_TYPE_I1:
1319         case MONO_TYPE_U1:
1320         case MONO_TYPE_I2:
1321         case MONO_TYPE_U2:
1322         case MONO_TYPE_I4:
1323         case MONO_TYPE_U4:
1324                 return STACK_I4;
1325         case MONO_TYPE_I:
1326         case MONO_TYPE_U:
1327         case MONO_TYPE_PTR:
1328         case MONO_TYPE_FNPTR:
1329                 return STACK_PTR;
1330         case MONO_TYPE_CLASS:
1331         case MONO_TYPE_STRING:
1332         case MONO_TYPE_OBJECT:
1333         case MONO_TYPE_SZARRAY:
1334         case MONO_TYPE_ARRAY:
1335                 return STACK_OBJ;
1336         case MONO_TYPE_I8:
1337         case MONO_TYPE_U8:
1338                 return STACK_I8;
1339         case MONO_TYPE_R4:
1340                 return cfg->r4_stack_type;
1341         case MONO_TYPE_R8:
1342                 return STACK_R8;
1343         case MONO_TYPE_VALUETYPE:
1344         case MONO_TYPE_TYPEDBYREF:
1345                 return STACK_VTYPE;
1346         case MONO_TYPE_GENERICINST:
1347                 if (mono_type_generic_inst_is_valuetype (t))
1348                         return STACK_VTYPE;
1349                 else
1350                         return STACK_OBJ;
1351                 break;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355
1356         return -1;
1357 }
1358
1359 static MonoClass*
1360 array_access_to_klass (int opcode)
1361 {
1362         switch (opcode) {
1363         case CEE_LDELEM_U1:
1364                 return mono_defaults.byte_class;
1365         case CEE_LDELEM_U2:
1366                 return mono_defaults.uint16_class;
1367         case CEE_LDELEM_I:
1368         case CEE_STELEM_I:
1369                 return mono_defaults.int_class;
1370         case CEE_LDELEM_I1:
1371         case CEE_STELEM_I1:
1372                 return mono_defaults.sbyte_class;
1373         case CEE_LDELEM_I2:
1374         case CEE_STELEM_I2:
1375                 return mono_defaults.int16_class;
1376         case CEE_LDELEM_I4:
1377         case CEE_STELEM_I4:
1378                 return mono_defaults.int32_class;
1379         case CEE_LDELEM_U4:
1380                 return mono_defaults.uint32_class;
1381         case CEE_LDELEM_I8:
1382         case CEE_STELEM_I8:
1383                 return mono_defaults.int64_class;
1384         case CEE_LDELEM_R4:
1385         case CEE_STELEM_R4:
1386                 return mono_defaults.single_class;
1387         case CEE_LDELEM_R8:
1388         case CEE_STELEM_R8:
1389                 return mono_defaults.double_class;
1390         case CEE_LDELEM_REF:
1391         case CEE_STELEM_REF:
1392                 return mono_defaults.object_class;
1393         default:
1394                 g_assert_not_reached ();
1395         }
1396         return NULL;
1397 }
1398
1399 /*
1400  * We try to share variables when possible
1401  */
1402 static MonoInst *
1403 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1404 {
1405         MonoInst *res;
1406         int pos, vnum;
1407
1408         /* inlining can result in deeper stacks */
1409         if (slot >= cfg->header->max_stack)
1410                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1411
1412         pos = ins->type - 1 + slot * STACK_MAX;
1413
1414         switch (ins->type) {
1415         case STACK_I4:
1416         case STACK_I8:
1417         case STACK_R8:
1418         case STACK_PTR:
1419         case STACK_MP:
1420         case STACK_OBJ:
1421                 if ((vnum = cfg->intvars [pos]))
1422                         return cfg->varinfo [vnum];
1423                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1424                 cfg->intvars [pos] = res->inst_c0;
1425                 break;
1426         default:
1427                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1428         }
1429         return res;
1430 }
1431
1432 static void
1433 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1434 {
1435         /*
1436          * Don't use this if a generic_context is set, since that means AOT can't
1437          * look up the method using just the image+token.
1438          * table == 0 means this is a reference made from a wrapper.
1439          */
1440         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1441                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1442                 jump_info_token->image = image;
1443                 jump_info_token->token = token;
1444                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1445         }
1446 }
1447
1448 /*
1449  * This function is called to handle items that are left on the evaluation stack
1450  * at basic block boundaries. What happens is that we save the values to local variables
1451  * and we reload them later when first entering the target basic block (with the
1452  * handle_loaded_temps () function).
1453  * A single joint point will use the same variables (stored in the array bb->out_stack or
1454  * bb->in_stack, if the basic block is before or after the joint point).
1455  *
1456  * This function needs to be called _before_ emitting the last instruction of
1457  * the bb (i.e. before emitting a branch).
1458  * If the stack merge fails at a join point, cfg->unverifiable is set.
1459  */
1460 static void
1461 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1462 {
1463         int i, bindex;
1464         MonoBasicBlock *bb = cfg->cbb;
1465         MonoBasicBlock *outb;
1466         MonoInst *inst, **locals;
1467         gboolean found;
1468
1469         if (!count)
1470                 return;
1471         if (cfg->verbose_level > 3)
1472                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1473         if (!bb->out_scount) {
1474                 bb->out_scount = count;
1475                 //printf ("bblock %d has out:", bb->block_num);
1476                 found = FALSE;
1477                 for (i = 0; i < bb->out_count; ++i) {
1478                         outb = bb->out_bb [i];
1479                         /* exception handlers are linked, but they should not be considered for stack args */
1480                         if (outb->flags & BB_EXCEPTION_HANDLER)
1481                                 continue;
1482                         //printf (" %d", outb->block_num);
1483                         if (outb->in_stack) {
1484                                 found = TRUE;
1485                                 bb->out_stack = outb->in_stack;
1486                                 break;
1487                         }
1488                 }
1489                 //printf ("\n");
1490                 if (!found) {
1491                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1492                         for (i = 0; i < count; ++i) {
1493                                 /*
1494                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1495                                  * stack slot and if they are of the same type.
1496                                  * This won't cause conflicts since if 'local' is used to
1497                                  * store one of the values in the in_stack of a bblock, then
1498                                  * the same variable will be used for the same outgoing stack
1499                                  * slot as well.
1500                                  * This doesn't work when inlining methods, since the bblocks
1501                                  * in the inlined methods do not inherit their in_stack from
1502                                  * the bblock they are inlined to. See bug #58863 for an
1503                                  * example.
1504                                  */
1505                                 if (cfg->inlined_method)
1506                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1507                                 else
1508                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1509                         }
1510                 }
1511         }
1512
1513         for (i = 0; i < bb->out_count; ++i) {
1514                 outb = bb->out_bb [i];
1515                 /* exception handlers are linked, but they should not be considered for stack args */
1516                 if (outb->flags & BB_EXCEPTION_HANDLER)
1517                         continue;
1518                 if (outb->in_scount) {
1519                         if (outb->in_scount != bb->out_scount) {
1520                                 cfg->unverifiable = TRUE;
1521                                 return;
1522                         }
1523                         continue; /* check they are the same locals */
1524                 }
1525                 outb->in_scount = count;
1526                 outb->in_stack = bb->out_stack;
1527         }
1528
1529         locals = bb->out_stack;
1530         cfg->cbb = bb;
1531         for (i = 0; i < count; ++i) {
1532                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1533                 inst->cil_code = sp [i]->cil_code;
1534                 sp [i] = locals [i];
1535                 if (cfg->verbose_level > 3)
1536                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1537         }
1538
1539         /*
1540          * It is possible that the out bblocks already have in_stack assigned, and
1541          * the in_stacks differ. In this case, we will store to all the different
1542          * in_stacks.
1543          */
1544
1545         found = TRUE;
1546         bindex = 0;
1547         while (found) {
1548                 /* Find a bblock which has a different in_stack */
1549                 found = FALSE;
1550                 while (bindex < bb->out_count) {
1551                         outb = bb->out_bb [bindex];
1552                         /* exception handlers are linked, but they should not be considered for stack args */
1553                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1554                                 bindex++;
1555                                 continue;
1556                         }
1557                         if (outb->in_stack != locals) {
1558                                 for (i = 0; i < count; ++i) {
1559                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1560                                         inst->cil_code = sp [i]->cil_code;
1561                                         sp [i] = locals [i];
1562                                         if (cfg->verbose_level > 3)
1563                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1564                                 }
1565                                 locals = outb->in_stack;
1566                                 found = TRUE;
1567                                 break;
1568                         }
1569                         bindex ++;
1570                 }
1571         }
1572 }
1573
1574 MonoInst*
1575 mini_emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1576 {
1577         MonoInst *ins;
1578
1579         if (cfg->compile_aot) {
1580                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1581         } else {
1582                 MonoJumpInfo ji;
1583                 gpointer target;
1584                 MonoError error;
1585
1586                 ji.type = patch_type;
1587                 ji.data.target = data;
1588                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1589                 mono_error_assert_ok (&error);
1590
1591                 EMIT_NEW_PCONST (cfg, ins, target);
1592         }
1593         return ins;
1594 }
1595
1596 static MonoInst*
1597 mono_create_fast_tls_getter (MonoCompile *cfg, MonoTlsKey key)
1598 {
1599         int tls_offset = mono_tls_get_tls_offset (key);
1600
1601         if (cfg->compile_aot)
1602                 return NULL;
1603
1604         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1605                 MonoInst *ins;
1606                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
1607                 ins->dreg = mono_alloc_preg (cfg);
1608                 ins->inst_offset = tls_offset;
1609                 return ins;
1610         }
1611         return NULL;
1612 }
1613
1614 static MonoInst*
1615 mono_create_fast_tls_setter (MonoCompile *cfg, MonoInst* value, MonoTlsKey key)
1616 {
1617         int tls_offset = mono_tls_get_tls_offset (key);
1618
1619         if (cfg->compile_aot)
1620                 return NULL;
1621
1622         if (tls_offset != -1 && mono_arch_have_fast_tls ()) {
1623                 MonoInst *ins;
1624                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1625                 ins->sreg1 = value->dreg;
1626                 ins->inst_offset = tls_offset;
1627                 return ins;
1628         }
1629         return NULL;
1630 }
1631
1632
1633 MonoInst*
1634 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
1635 {
1636         MonoInst *fast_tls = NULL;
1637
1638         if (!mini_get_debug_options ()->use_fallback_tls)
1639                 fast_tls = mono_create_fast_tls_getter (cfg, key);
1640
1641         if (fast_tls) {
1642                 MONO_ADD_INS (cfg->cbb, fast_tls);
1643                 return fast_tls;
1644         }
1645
1646         if (cfg->compile_aot) {
1647                 MonoInst *addr;
1648                 /*
1649                  * tls getters are critical pieces of code and we don't want to resolve them
1650                  * through the standard plt/tramp mechanism since we might expose ourselves
1651                  * to crashes and infinite recursions.
1652                  */
1653                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GET_TLS_TRAMP, (void*)key);
1654                 return mini_emit_calli (cfg, helper_sig_get_tls_tramp, NULL, addr, NULL, NULL);
1655         } else {
1656                 gpointer getter = mono_tls_get_tls_getter (key, FALSE);
1657                 return mono_emit_jit_icall (cfg, getter, NULL);
1658         }
1659 }
1660
1661 static MonoInst*
1662 mono_create_tls_set (MonoCompile *cfg, MonoInst *value, MonoTlsKey key)
1663 {
1664         MonoInst *fast_tls = NULL;
1665
1666         if (!mini_get_debug_options ()->use_fallback_tls)
1667                 fast_tls = mono_create_fast_tls_setter (cfg, value, key);
1668
1669         if (fast_tls) {
1670                 MONO_ADD_INS (cfg->cbb, fast_tls);
1671                 return fast_tls;
1672         }
1673
1674         if (cfg->compile_aot) {
1675                 MonoInst *addr;
1676                 EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_SET_TLS_TRAMP, (void*)key);
1677                 return mini_emit_calli (cfg, helper_sig_set_tls_tramp, &value, addr, NULL, NULL);
1678         } else {
1679                 gpointer setter = mono_tls_get_tls_setter (key, FALSE);
1680                 return mono_emit_jit_icall (cfg, setter, &value);
1681         }
1682 }
1683
1684 /*
1685  * emit_push_lmf:
1686  *
1687  *   Emit IR to push the current LMF onto the LMF stack.
1688  */
1689 static void
1690 emit_push_lmf (MonoCompile *cfg)
1691 {
1692         /*
1693          * Emit IR to push the LMF:
1694          * lmf_addr = <lmf_addr from tls>
1695          * lmf->lmf_addr = lmf_addr
1696          * lmf->prev_lmf = *lmf_addr
1697          * *lmf_addr = lmf
1698          */
1699         MonoInst *ins, *lmf_ins;
1700
1701         if (!cfg->lmf_ir)
1702                 return;
1703
1704         int lmf_reg, prev_lmf_reg;
1705         /*
1706          * Store lmf_addr in a variable, so it can be allocated to a global register.
1707          */
1708         if (!cfg->lmf_addr_var)
1709                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1710
1711 #ifdef HOST_WIN32
1712         ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
1713         g_assert (ins);
1714         int jit_tls_dreg = ins->dreg;
1715
1716         lmf_reg = alloc_preg (cfg);
1717         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
1718 #else
1719         lmf_ins = mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
1720         g_assert (lmf_ins);
1721 #endif
1722         lmf_ins->dreg = cfg->lmf_addr_var->dreg;
1723
1724         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1725         lmf_reg = ins->dreg;
1726
1727         prev_lmf_reg = alloc_preg (cfg);
1728         /* Save previous_lmf */
1729         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
1730         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
1731         /* Set new lmf */
1732         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
1733 }
1734
1735 /*
1736  * emit_pop_lmf:
1737  *
1738  *   Emit IR to pop the current LMF from the LMF stack.
1739  */
1740 static void
1741 emit_pop_lmf (MonoCompile *cfg)
1742 {
1743         int lmf_reg, lmf_addr_reg;
1744         MonoInst *ins;
1745
1746         if (!cfg->lmf_ir)
1747                 return;
1748
1749         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
1750         lmf_reg = ins->dreg;
1751
1752         int prev_lmf_reg;
1753         /*
1754          * Emit IR to pop the LMF:
1755          * *(lmf->lmf_addr) = lmf->prev_lmf
1756          */
1757         /* This could be called before emit_push_lmf () */
1758         if (!cfg->lmf_addr_var)
1759                 cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1760         lmf_addr_reg = cfg->lmf_addr_var->dreg;
1761
1762         prev_lmf_reg = alloc_preg (cfg);
1763         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
1764         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
1765 }
1766
1767 static void
1768 emit_instrumentation_call (MonoCompile *cfg, void *func)
1769 {
1770         MonoInst *iargs [1];
1771
1772         /*
1773          * Avoid instrumenting inlined methods since it can
1774          * distort profiling results.
1775          */
1776         if (cfg->method != cfg->current_method)
1777                 return;
1778
1779         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
1780                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
1781                 mono_emit_jit_icall (cfg, func, iargs);
1782         }
1783 }
1784
1785 static int
1786 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
1787 {
1788 handle_enum:
1789         type = mini_get_underlying_type (type);
1790         switch (type->type) {
1791         case MONO_TYPE_VOID:
1792                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
1793         case MONO_TYPE_I1:
1794         case MONO_TYPE_U1:
1795         case MONO_TYPE_I2:
1796         case MONO_TYPE_U2:
1797         case MONO_TYPE_I4:
1798         case MONO_TYPE_U4:
1799                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1800         case MONO_TYPE_I:
1801         case MONO_TYPE_U:
1802         case MONO_TYPE_PTR:
1803         case MONO_TYPE_FNPTR:
1804                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1805         case MONO_TYPE_CLASS:
1806         case MONO_TYPE_STRING:
1807         case MONO_TYPE_OBJECT:
1808         case MONO_TYPE_SZARRAY:
1809         case MONO_TYPE_ARRAY:
1810                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
1811         case MONO_TYPE_I8:
1812         case MONO_TYPE_U8:
1813                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
1814         case MONO_TYPE_R4:
1815                 if (cfg->r4fp)
1816                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
1817                 else
1818                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1819         case MONO_TYPE_R8:
1820                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
1821         case MONO_TYPE_VALUETYPE:
1822                 if (type->data.klass->enumtype) {
1823                         type = mono_class_enum_basetype (type->data.klass);
1824                         goto handle_enum;
1825                 } else
1826                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1827         case MONO_TYPE_TYPEDBYREF:
1828                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1829         case MONO_TYPE_GENERICINST:
1830                 type = &type->data.generic_class->container_class->byval_arg;
1831                 goto handle_enum;
1832         case MONO_TYPE_VAR:
1833         case MONO_TYPE_MVAR:
1834                 /* gsharedvt */
1835                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
1836         default:
1837                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
1838         }
1839         return -1;
1840 }
1841
1842 //XXX this ignores if t is byref
1843 #define MONO_TYPE_IS_PRIMITIVE_SCALAR(t) ((((((t)->type >= MONO_TYPE_BOOLEAN && (t)->type <= MONO_TYPE_U8) || ((t)->type >= MONO_TYPE_I && (t)->type <= MONO_TYPE_U)))))
1844
1845 /*
1846  * target_type_is_incompatible:
1847  * @cfg: MonoCompile context
1848  *
1849  * Check that the item @arg on the evaluation stack can be stored
1850  * in the target type (can be a local, or field, etc).
1851  * The cfg arg can be used to check if we need verification or just
1852  * validity checks.
1853  *
1854  * Returns: non-0 value if arg can't be stored on a target.
1855  */
1856 static int
1857 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
1858 {
1859         MonoType *simple_type;
1860         MonoClass *klass;
1861
1862         if (target->byref) {
1863                 /* FIXME: check that the pointed to types match */
1864                 if (arg->type == STACK_MP) {
1865                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
1866                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
1867                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
1868
1869                         /* if the target is native int& or same type */
1870                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
1871                                 return 0;
1872
1873                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
1874                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
1875                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
1876                                 return 0;
1877                         return 1;
1878                 }
1879                 if (arg->type == STACK_PTR)
1880                         return 0;
1881                 return 1;
1882         }
1883
1884         simple_type = mini_get_underlying_type (target);
1885         switch (simple_type->type) {
1886         case MONO_TYPE_VOID:
1887                 return 1;
1888         case MONO_TYPE_I1:
1889         case MONO_TYPE_U1:
1890         case MONO_TYPE_I2:
1891         case MONO_TYPE_U2:
1892         case MONO_TYPE_I4:
1893         case MONO_TYPE_U4:
1894                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
1895                         return 1;
1896                 return 0;
1897         case MONO_TYPE_PTR:
1898                 /* STACK_MP is needed when setting pinned locals */
1899                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1900                         return 1;
1901                 return 0;
1902         case MONO_TYPE_I:
1903         case MONO_TYPE_U:
1904         case MONO_TYPE_FNPTR:
1905                 /*
1906                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
1907                  * in native int. (#688008).
1908                  */
1909                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
1910                         return 1;
1911                 return 0;
1912         case MONO_TYPE_CLASS:
1913         case MONO_TYPE_STRING:
1914         case MONO_TYPE_OBJECT:
1915         case MONO_TYPE_SZARRAY:
1916         case MONO_TYPE_ARRAY:
1917                 if (arg->type != STACK_OBJ)
1918                         return 1;
1919                 /* FIXME: check type compatibility */
1920                 return 0;
1921         case MONO_TYPE_I8:
1922         case MONO_TYPE_U8:
1923                 if (arg->type != STACK_I8)
1924                         return 1;
1925                 return 0;
1926         case MONO_TYPE_R4:
1927                 if (arg->type != cfg->r4_stack_type)
1928                         return 1;
1929                 return 0;
1930         case MONO_TYPE_R8:
1931                 if (arg->type != STACK_R8)
1932                         return 1;
1933                 return 0;
1934         case MONO_TYPE_VALUETYPE:
1935                 if (arg->type != STACK_VTYPE)
1936                         return 1;
1937                 klass = mono_class_from_mono_type (simple_type);
1938                 if (klass != arg->klass)
1939                         return 1;
1940                 return 0;
1941         case MONO_TYPE_TYPEDBYREF:
1942                 if (arg->type != STACK_VTYPE)
1943                         return 1;
1944                 klass = mono_class_from_mono_type (simple_type);
1945                 if (klass != arg->klass)
1946                         return 1;
1947                 return 0;
1948         case MONO_TYPE_GENERICINST:
1949                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
1950                         MonoClass *target_class;
1951                         if (arg->type != STACK_VTYPE)
1952                                 return 1;
1953                         klass = mono_class_from_mono_type (simple_type);
1954                         target_class = mono_class_from_mono_type (target);
1955                         /* The second cases is needed when doing partial sharing */
1956                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
1957                                 return 1;
1958                         return 0;
1959                 } else {
1960                         if (arg->type != STACK_OBJ)
1961                                 return 1;
1962                         /* FIXME: check type compatibility */
1963                         return 0;
1964                 }
1965         case MONO_TYPE_VAR:
1966         case MONO_TYPE_MVAR:
1967                 g_assert (cfg->gshared);
1968                 if (mini_type_var_is_vt (simple_type)) {
1969                         if (arg->type != STACK_VTYPE)
1970                                 return 1;
1971                 } else {
1972                         if (arg->type != STACK_OBJ)
1973                                 return 1;
1974                 }
1975                 return 0;
1976         default:
1977                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
1978         }
1979         return 1;
1980 }
1981
1982 /*
1983  * Prepare arguments for passing to a function call.
1984  * Return a non-zero value if the arguments can't be passed to the given
1985  * signature.
1986  * The type checks are not yet complete and some conversions may need
1987  * casts on 32 or 64 bit architectures.
1988  *
1989  * FIXME: implement this using target_type_is_incompatible ()
1990  */
1991 static int
1992 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
1993 {
1994         MonoType *simple_type;
1995         int i;
1996
1997         if (sig->hasthis) {
1998                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
1999                         return 1;
2000                 args++;
2001         }
2002         for (i = 0; i < sig->param_count; ++i) {
2003                 if (sig->params [i]->byref) {
2004                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2005                                 return 1;
2006                         continue;
2007                 }
2008                 simple_type = mini_get_underlying_type (sig->params [i]);
2009 handle_enum:
2010                 switch (simple_type->type) {
2011                 case MONO_TYPE_VOID:
2012                         return 1;
2013                         continue;
2014                 case MONO_TYPE_I1:
2015                 case MONO_TYPE_U1:
2016                 case MONO_TYPE_I2:
2017                 case MONO_TYPE_U2:
2018                 case MONO_TYPE_I4:
2019                 case MONO_TYPE_U4:
2020                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2021                                 return 1;
2022                         continue;
2023                 case MONO_TYPE_I:
2024                 case MONO_TYPE_U:
2025                 case MONO_TYPE_PTR:
2026                 case MONO_TYPE_FNPTR:
2027                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2028                                 return 1;
2029                         continue;
2030                 case MONO_TYPE_CLASS:
2031                 case MONO_TYPE_STRING:
2032                 case MONO_TYPE_OBJECT:
2033                 case MONO_TYPE_SZARRAY:
2034                 case MONO_TYPE_ARRAY:
2035                         if (args [i]->type != STACK_OBJ)
2036                                 return 1;
2037                         continue;
2038                 case MONO_TYPE_I8:
2039                 case MONO_TYPE_U8:
2040                         if (args [i]->type != STACK_I8)
2041                                 return 1;
2042                         continue;
2043                 case MONO_TYPE_R4:
2044                         if (args [i]->type != cfg->r4_stack_type)
2045                                 return 1;
2046                         continue;
2047                 case MONO_TYPE_R8:
2048                         if (args [i]->type != STACK_R8)
2049                                 return 1;
2050                         continue;
2051                 case MONO_TYPE_VALUETYPE:
2052                         if (simple_type->data.klass->enumtype) {
2053                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2054                                 goto handle_enum;
2055                         }
2056                         if (args [i]->type != STACK_VTYPE)
2057                                 return 1;
2058                         continue;
2059                 case MONO_TYPE_TYPEDBYREF:
2060                         if (args [i]->type != STACK_VTYPE)
2061                                 return 1;
2062                         continue;
2063                 case MONO_TYPE_GENERICINST:
2064                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2065                         goto handle_enum;
2066                 case MONO_TYPE_VAR:
2067                 case MONO_TYPE_MVAR:
2068                         /* gsharedvt */
2069                         if (args [i]->type != STACK_VTYPE)
2070                                 return 1;
2071                         continue;
2072                 default:
2073                         g_error ("unknown type 0x%02x in check_call_signature",
2074                                  simple_type->type);
2075                 }
2076         }
2077         return 0;
2078 }
2079
2080 static int
2081 callvirt_to_call (int opcode)
2082 {
2083         switch (opcode) {
2084         case OP_CALL_MEMBASE:
2085                 return OP_CALL;
2086         case OP_VOIDCALL_MEMBASE:
2087                 return OP_VOIDCALL;
2088         case OP_FCALL_MEMBASE:
2089                 return OP_FCALL;
2090         case OP_RCALL_MEMBASE:
2091                 return OP_RCALL;
2092         case OP_VCALL_MEMBASE:
2093                 return OP_VCALL;
2094         case OP_LCALL_MEMBASE:
2095                 return OP_LCALL;
2096         default:
2097                 g_assert_not_reached ();
2098         }
2099
2100         return -1;
2101 }
2102
2103 static int
2104 callvirt_to_call_reg (int opcode)
2105 {
2106         switch (opcode) {
2107         case OP_CALL_MEMBASE:
2108                 return OP_CALL_REG;
2109         case OP_VOIDCALL_MEMBASE:
2110                 return OP_VOIDCALL_REG;
2111         case OP_FCALL_MEMBASE:
2112                 return OP_FCALL_REG;
2113         case OP_RCALL_MEMBASE:
2114                 return OP_RCALL_REG;
2115         case OP_VCALL_MEMBASE:
2116                 return OP_VCALL_REG;
2117         case OP_LCALL_MEMBASE:
2118                 return OP_LCALL_REG;
2119         default:
2120                 g_assert_not_reached ();
2121         }
2122
2123         return -1;
2124 }
2125
2126 /* Either METHOD or IMT_ARG needs to be set */
2127 static void
2128 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2129 {
2130         int method_reg;
2131
2132         if (COMPILE_LLVM (cfg)) {
2133                 if (imt_arg) {
2134                         method_reg = alloc_preg (cfg);
2135                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2136                 } else {
2137                         MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2138                         method_reg = ins->dreg;
2139                 }
2140
2141 #ifdef ENABLE_LLVM
2142                 call->imt_arg_reg = method_reg;
2143 #endif
2144                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2145                 return;
2146         }
2147
2148         if (imt_arg) {
2149                 method_reg = alloc_preg (cfg);
2150                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2151         } else {
2152                 MonoInst *ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2153                 method_reg = ins->dreg;
2154         }
2155
2156         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2157 }
2158
2159 static MonoJumpInfo *
2160 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2161 {
2162         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2163
2164         ji->ip.i = ip;
2165         ji->type = type;
2166         ji->data.target = target;
2167
2168         return ji;
2169 }
2170
2171 int
2172 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2173 {
2174         if (cfg->gshared)
2175                 return mono_class_check_context_used (klass);
2176         else
2177                 return 0;
2178 }
2179
2180 static int
2181 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2182 {
2183         if (cfg->gshared)
2184                 return mono_method_check_context_used (method);
2185         else
2186                 return 0;
2187 }
2188
2189 /*
2190  * check_method_sharing:
2191  *
2192  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2193  */
2194 static void
2195 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2196 {
2197         gboolean pass_vtable = FALSE;
2198         gboolean pass_mrgctx = FALSE;
2199
2200         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2201                 (mono_class_is_ginst (cmethod->klass) || mono_class_is_gtd (cmethod->klass))) {
2202                 gboolean sharable = FALSE;
2203
2204                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2205                         sharable = TRUE;
2206
2207                 /*
2208                  * Pass vtable iff target method might
2209                  * be shared, which means that sharing
2210                  * is enabled for its class and its
2211                  * context is sharable (and it's not a
2212                  * generic method).
2213                  */
2214                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2215                         pass_vtable = TRUE;
2216         }
2217
2218         if (mini_method_get_context (cmethod) &&
2219                 mini_method_get_context (cmethod)->method_inst) {
2220                 g_assert (!pass_vtable);
2221
2222                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2223                         pass_mrgctx = TRUE;
2224                 } else {
2225                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2226                                 pass_mrgctx = TRUE;
2227                 }
2228         }
2229
2230         if (out_pass_vtable)
2231                 *out_pass_vtable = pass_vtable;
2232         if (out_pass_mrgctx)
2233                 *out_pass_mrgctx = pass_mrgctx;
2234 }
2235
2236 inline static MonoCallInst *
2237 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2238                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2239 {
2240         MonoType *sig_ret;
2241         MonoCallInst *call;
2242 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2243         int i;
2244 #endif
2245
2246         if (cfg->llvm_only)
2247                 tail = FALSE;
2248
2249         if (tail) {
2250                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2251
2252                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2253         } else
2254                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2255
2256         call->args = args;
2257         call->signature = sig;
2258         call->rgctx_reg = rgctx;
2259         sig_ret = mini_get_underlying_type (sig->ret);
2260
2261         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2262
2263         if (tail) {
2264                 if (mini_type_is_vtype (sig_ret)) {
2265                         call->vret_var = cfg->vret_addr;
2266                         //g_assert_not_reached ();
2267                 }
2268         } else if (mini_type_is_vtype (sig_ret)) {
2269                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2270                 MonoInst *loada;
2271
2272                 temp->backend.is_pinvoke = sig->pinvoke;
2273
2274                 /*
2275                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2276                  * address of return value to increase optimization opportunities.
2277                  * Before vtype decomposition, the dreg of the call ins itself represents the
2278                  * fact the call modifies the return value. After decomposition, the call will
2279                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2280                  * will be transformed into an LDADDR.
2281                  */
2282                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2283                 loada->dreg = alloc_preg (cfg);
2284                 loada->inst_p0 = temp;
2285                 /* We reference the call too since call->dreg could change during optimization */
2286                 loada->inst_p1 = call;
2287                 MONO_ADD_INS (cfg->cbb, loada);
2288
2289                 call->inst.dreg = temp->dreg;
2290
2291                 call->vret_var = loada;
2292         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2293                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2294
2295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2296         if (COMPILE_SOFT_FLOAT (cfg)) {
2297                 /*
2298                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2299                  * an icall, but that cannot be done during the call sequence since it would clobber
2300                  * the call registers + the stack. So we do it before emitting the call.
2301                  */
2302                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2303                         MonoType *t;
2304                         MonoInst *in = call->args [i];
2305
2306                         if (i >= sig->hasthis)
2307                                 t = sig->params [i - sig->hasthis];
2308                         else
2309                                 t = &mono_defaults.int_class->byval_arg;
2310                         t = mono_type_get_underlying_type (t);
2311
2312                         if (!t->byref && t->type == MONO_TYPE_R4) {
2313                                 MonoInst *iargs [1];
2314                                 MonoInst *conv;
2315
2316                                 iargs [0] = in;
2317                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2318
2319                                 /* The result will be in an int vreg */
2320                                 call->args [i] = conv;
2321                         }
2322                 }
2323         }
2324 #endif
2325
2326         call->need_unbox_trampoline = unbox_trampoline;
2327
2328 #ifdef ENABLE_LLVM
2329         if (COMPILE_LLVM (cfg))
2330                 mono_llvm_emit_call (cfg, call);
2331         else
2332                 mono_arch_emit_call (cfg, call);
2333 #else
2334         mono_arch_emit_call (cfg, call);
2335 #endif
2336
2337         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2338         cfg->flags |= MONO_CFG_HAS_CALLS;
2339
2340         return call;
2341 }
2342
2343 static void
2344 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2345 {
2346         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2347         cfg->uses_rgctx_reg = TRUE;
2348         call->rgctx_reg = TRUE;
2349 #ifdef ENABLE_LLVM
2350         call->rgctx_arg_reg = rgctx_reg;
2351 #endif
2352 }
2353
2354 MonoInst*
2355 mini_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2356 {
2357         MonoCallInst *call;
2358         MonoInst *ins;
2359         int rgctx_reg = -1;
2360         gboolean check_sp = FALSE;
2361
2362         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2363                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2364
2365                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2366                         check_sp = TRUE;
2367         }
2368
2369         if (rgctx_arg) {
2370                 rgctx_reg = mono_alloc_preg (cfg);
2371                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2372         }
2373
2374         if (check_sp) {
2375                 if (!cfg->stack_inbalance_var)
2376                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2377
2378                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2379                 ins->dreg = cfg->stack_inbalance_var->dreg;
2380                 MONO_ADD_INS (cfg->cbb, ins);
2381         }
2382
2383         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2384
2385         call->inst.sreg1 = addr->dreg;
2386
2387         if (imt_arg)
2388                 emit_imt_argument (cfg, call, NULL, imt_arg);
2389
2390         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2391
2392         if (check_sp) {
2393                 int sp_reg;
2394
2395                 sp_reg = mono_alloc_preg (cfg);
2396
2397                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2398                 ins->dreg = sp_reg;
2399                 MONO_ADD_INS (cfg->cbb, ins);
2400
2401                 /* Restore the stack so we don't crash when throwing the exception */
2402                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2403                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2404                 MONO_ADD_INS (cfg->cbb, ins);
2405
2406                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2407                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2408         }
2409
2410         if (rgctx_arg)
2411                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2412
2413         return (MonoInst*)call;
2414 }
2415
2416 static MonoInst*
2417 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2418
2419 static MonoInst*
2420 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2421                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2422 {
2423 #ifndef DISABLE_REMOTING
2424         gboolean might_be_remote = FALSE;
2425 #endif
2426         gboolean virtual_ = this_ins != NULL;
2427         gboolean enable_for_aot = TRUE;
2428         int context_used;
2429         MonoCallInst *call;
2430         MonoInst *call_target = NULL;
2431         int rgctx_reg = 0;
2432         gboolean need_unbox_trampoline;
2433
2434         if (!sig)
2435                 sig = mono_method_signature (method);
2436
2437         if (cfg->llvm_only && (mono_class_is_interface (method->klass)))
2438                 g_assert_not_reached ();
2439
2440         if (rgctx_arg) {
2441                 rgctx_reg = mono_alloc_preg (cfg);
2442                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2443         }
2444
2445         if (method->string_ctor) {
2446                 /* Create the real signature */
2447                 /* FIXME: Cache these */
2448                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2449                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2450
2451                 sig = ctor_sig;
2452         }
2453
2454         context_used = mini_method_check_context_used (cfg, method);
2455
2456 #ifndef DISABLE_REMOTING
2457         might_be_remote = this_ins && sig->hasthis &&
2458                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2459                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2460
2461         if (might_be_remote && context_used) {
2462                 MonoInst *addr;
2463
2464                 g_assert (cfg->gshared);
2465
2466                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2467
2468                 return mini_emit_calli (cfg, sig, args, addr, NULL, NULL);
2469         }
2470 #endif
2471
2472         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2473                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2474
2475         need_unbox_trampoline = method->klass == mono_defaults.object_class || mono_class_is_interface (method->klass);
2476
2477         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2478
2479 #ifndef DISABLE_REMOTING
2480         if (might_be_remote)
2481                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2482         else
2483 #endif
2484                 call->method = method;
2485         call->inst.flags |= MONO_INST_HAS_METHOD;
2486         call->inst.inst_left = this_ins;
2487         call->tail_call = tail;
2488
2489         if (virtual_) {
2490                 int vtable_reg, slot_reg, this_reg;
2491                 int offset;
2492
2493                 this_reg = this_ins->dreg;
2494
2495                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2496                         MonoInst *dummy_use;
2497
2498                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2499
2500                         /* Make a call to delegate->invoke_impl */
2501                         call->inst.inst_basereg = this_reg;
2502                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2503                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2504
2505                         /* We must emit a dummy use here because the delegate trampoline will
2506                         replace the 'this' argument with the delegate target making this activation
2507                         no longer a root for the delegate.
2508                         This is an issue for delegates that target collectible code such as dynamic
2509                         methods of GC'able assemblies.
2510
2511                         For a test case look into #667921.
2512
2513                         FIXME: a dummy use is not the best way to do it as the local register allocator
2514                         will put it on a caller save register and spil it around the call.
2515                         Ideally, we would either put it on a callee save register or only do the store part.
2516                          */
2517                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2518
2519                         return (MonoInst*)call;
2520                 }
2521
2522                 if ((!cfg->compile_aot || enable_for_aot) &&
2523                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2524                          (MONO_METHOD_IS_FINAL (method) &&
2525                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2526                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2527                         /*
2528                          * the method is not virtual, we just need to ensure this is not null
2529                          * and then we can call the method directly.
2530                          */
2531 #ifndef DISABLE_REMOTING
2532                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2533                                 /*
2534                                  * The check above ensures method is not gshared, this is needed since
2535                                  * gshared methods can't have wrappers.
2536                                  */
2537                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2538                         }
2539 #endif
2540
2541                         if (!method->string_ctor)
2542                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2543
2544                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2545                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2546                         /*
2547                          * the method is virtual, but we can statically dispatch since either
2548                          * it's class or the method itself are sealed.
2549                          * But first we need to ensure it's not a null reference.
2550                          */
2551                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2552
2553                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2554                 } else if (call_target) {
2555                         vtable_reg = alloc_preg (cfg);
2556                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2557
2558                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2559                         call->inst.sreg1 = call_target->dreg;
2560                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2561                 } else {
2562                         vtable_reg = alloc_preg (cfg);
2563                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2564                         if (mono_class_is_interface (method->klass)) {
2565                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2566                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2567                                 slot_reg = vtable_reg;
2568                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2569                         } else {
2570                                 slot_reg = vtable_reg;
2571                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2572                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2573                                 if (imt_arg) {
2574                                         g_assert (mono_method_signature (method)->generic_param_count);
2575                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2576                                 }
2577                         }
2578
2579                         call->inst.sreg1 = slot_reg;
2580                         call->inst.inst_offset = offset;
2581                         call->is_virtual = TRUE;
2582                 }
2583         }
2584
2585         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2586
2587         if (rgctx_arg)
2588                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2589
2590         return (MonoInst*)call;
2591 }
2592
2593 MonoInst*
2594 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2595 {
2596         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2597 }
2598
2599 MonoInst*
2600 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2601                                            MonoInst **args)
2602 {
2603         MonoCallInst *call;
2604
2605         g_assert (sig);
2606
2607         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2608         call->fptr = func;
2609
2610         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2611
2612         return (MonoInst*)call;
2613 }
2614
2615 MonoInst*
2616 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2617 {
2618         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2619
2620         g_assert (info);
2621
2622         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2623 }
2624
2625 /*
2626  * mono_emit_abs_call:
2627  *
2628  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2629  */
2630 inline static MonoInst*
2631 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2632                                         MonoMethodSignature *sig, MonoInst **args)
2633 {
2634         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2635         MonoInst *ins;
2636
2637         /*
2638          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2639          * handle it.
2640          */
2641         if (cfg->abs_patches == NULL)
2642                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2643         g_hash_table_insert (cfg->abs_patches, ji, ji);
2644         ins = mono_emit_native_call (cfg, ji, sig, args);
2645         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2646         return ins;
2647 }
2648
2649 static MonoMethodSignature*
2650 sig_to_rgctx_sig (MonoMethodSignature *sig)
2651 {
2652         // FIXME: memory allocation
2653         MonoMethodSignature *res;
2654         int i;
2655
2656         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2657         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2658         res->param_count = sig->param_count + 1;
2659         for (i = 0; i < sig->param_count; ++i)
2660                 res->params [i] = sig->params [i];
2661         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
2662         return res;
2663 }
2664
2665 /* Make an indirect call to FSIG passing an additional argument */
2666 static MonoInst*
2667 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
2668 {
2669         MonoMethodSignature *csig;
2670         MonoInst *args_buf [16];
2671         MonoInst **args;
2672         int i, pindex, tmp_reg;
2673
2674         /* Make a call with an rgctx/extra arg */
2675         if (fsig->param_count + 2 < 16)
2676                 args = args_buf;
2677         else
2678                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
2679         pindex = 0;
2680         if (fsig->hasthis)
2681                 args [pindex ++] = orig_args [0];
2682         for (i = 0; i < fsig->param_count; ++i)
2683                 args [pindex ++] = orig_args [fsig->hasthis + i];
2684         tmp_reg = alloc_preg (cfg);
2685         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
2686         csig = sig_to_rgctx_sig (fsig);
2687         return mini_emit_calli (cfg, csig, args, call_target, NULL, NULL);
2688 }
2689
2690 /* Emit an indirect call to the function descriptor ADDR */
2691 static MonoInst*
2692 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
2693 {
2694         int addr_reg, arg_reg;
2695         MonoInst *call_target;
2696
2697         g_assert (cfg->llvm_only);
2698
2699         /*
2700          * addr points to a <addr, arg> pair, load both of them, and
2701          * make a call to addr, passing arg as an extra arg.
2702          */
2703         addr_reg = alloc_preg (cfg);
2704         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
2705         arg_reg = alloc_preg (cfg);
2706         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
2707
2708         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
2709 }
2710
2711 static gboolean
2712 direct_icalls_enabled (MonoCompile *cfg)
2713 {
2714         return FALSE;
2715
2716         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
2717 #ifdef TARGET_AMD64
2718         if (cfg->compile_llvm && !cfg->llvm_only)
2719                 return FALSE;
2720 #endif
2721         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
2722                 return FALSE;
2723         return TRUE;
2724 }
2725
2726 MonoInst*
2727 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
2728 {
2729         /*
2730          * Call the jit icall without a wrapper if possible.
2731          * The wrapper is needed for the following reasons:
2732          * - to handle exceptions thrown using mono_raise_exceptions () from the
2733          *   icall function. The EH code needs the lmf frame pushed by the
2734          *   wrapper to be able to unwind back to managed code.
2735          * - to be able to do stack walks for asynchronously suspended
2736          *   threads when debugging.
2737          */
2738         if (info->no_raise && direct_icalls_enabled (cfg)) {
2739                 char *name;
2740                 int costs;
2741
2742                 if (!info->wrapper_method) {
2743                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
2744                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
2745                         g_free (name);
2746                         mono_memory_barrier ();
2747                 }
2748
2749                 /*
2750                  * Inline the wrapper method, which is basically a call to the C icall, and
2751                  * an exception check.
2752                  */
2753                 costs = inline_method (cfg, info->wrapper_method, NULL,
2754                                                            args, NULL, il_offset, TRUE);
2755                 g_assert (costs > 0);
2756                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
2757
2758                 return args [0];
2759         } else {
2760                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2761         }
2762 }
2763
2764 static MonoInst*
2765 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
2766 {
2767         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
2768                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
2769                         int widen_op = -1;
2770
2771                         /*
2772                          * Native code might return non register sized integers
2773                          * without initializing the upper bits.
2774                          */
2775                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
2776                         case OP_LOADI1_MEMBASE:
2777                                 widen_op = OP_ICONV_TO_I1;
2778                                 break;
2779                         case OP_LOADU1_MEMBASE:
2780                                 widen_op = OP_ICONV_TO_U1;
2781                                 break;
2782                         case OP_LOADI2_MEMBASE:
2783                                 widen_op = OP_ICONV_TO_I2;
2784                                 break;
2785                         case OP_LOADU2_MEMBASE:
2786                                 widen_op = OP_ICONV_TO_U2;
2787                                 break;
2788                         default:
2789                                 break;
2790                         }
2791
2792                         if (widen_op != -1) {
2793                                 int dreg = alloc_preg (cfg);
2794                                 MonoInst *widen;
2795
2796                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
2797                                 widen->type = ins->type;
2798                                 ins = widen;
2799                         }
2800                 }
2801         }
2802
2803         return ins;
2804 }
2805
2806
2807 static void
2808 emit_method_access_failure (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
2809 {
2810         MonoInst *args [16];
2811
2812         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (caller), caller, MONO_RGCTX_INFO_METHOD);
2813         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (callee), callee, MONO_RGCTX_INFO_METHOD);
2814
2815         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
2816 }
2817
2818 MonoMethod*
2819 mini_get_memcpy_method (void)
2820 {
2821         static MonoMethod *memcpy_method = NULL;
2822         if (!memcpy_method) {
2823                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
2824                 if (!memcpy_method)
2825                         g_error ("Old corlib found. Install a new one");
2826         }
2827         return memcpy_method;
2828 }
2829
2830 void
2831 mini_emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
2832 {
2833         int card_table_shift_bits;
2834         gpointer card_table_mask;
2835         guint8 *card_table;
2836         MonoInst *dummy_use;
2837         int nursery_shift_bits;
2838         size_t nursery_size;
2839
2840         if (!cfg->gen_write_barriers)
2841                 return;
2842
2843         //method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1])
2844
2845         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
2846
2847         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
2848
2849         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
2850                 MonoInst *wbarrier;
2851
2852                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
2853                 wbarrier->sreg1 = ptr->dreg;
2854                 wbarrier->sreg2 = value->dreg;
2855                 MONO_ADD_INS (cfg->cbb, wbarrier);
2856         } else if (card_table) {
2857                 int offset_reg = alloc_preg (cfg);
2858                 int card_reg;
2859                 MonoInst *ins;
2860
2861                 /*
2862                  * We emit a fast light weight write barrier. This always marks cards as in the concurrent
2863                  * collector case, so, for the serial collector, it might slightly slow down nursery
2864                  * collections. We also expect that the host system and the target system have the same card
2865                  * table configuration, which is the case if they have the same pointer size.
2866                  */
2867
2868                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
2869                 if (card_table_mask)
2870                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
2871
2872                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2873                  * IMM's larger than 32bits.
2874                  */
2875                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
2876                 card_reg = ins->dreg;
2877
2878                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
2879                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
2880         } else {
2881                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
2882                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
2883         }
2884
2885         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
2886 }
2887
2888 MonoMethod*
2889 mini_get_memset_method (void)
2890 {
2891         static MonoMethod *memset_method = NULL;
2892         if (!memset_method) {
2893                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
2894                 if (!memset_method)
2895                         g_error ("Old corlib found. Install a new one");
2896         }
2897         return memset_method;
2898 }
2899
2900 void
2901 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
2902 {
2903         MonoInst *iargs [3];
2904         int n;
2905         guint32 align;
2906         MonoMethod *memset_method;
2907         MonoInst *size_ins = NULL;
2908         MonoInst *bzero_ins = NULL;
2909         static MonoMethod *bzero_method;
2910
2911         /* FIXME: Optimize this for the case when dest is an LDADDR */
2912         mono_class_init (klass);
2913         if (mini_is_gsharedvt_klass (klass)) {
2914                 size_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
2915                 bzero_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
2916                 if (!bzero_method)
2917                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
2918                 g_assert (bzero_method);
2919                 iargs [0] = dest;
2920                 iargs [1] = size_ins;
2921                 mini_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
2922                 return;
2923         }
2924
2925         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
2926
2927         n = mono_class_value_size (klass, &align);
2928
2929         if (n <= sizeof (gpointer) * 8) {
2930                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
2931         }
2932         else {
2933                 memset_method = mini_get_memset_method ();
2934                 iargs [0] = dest;
2935                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
2936                 EMIT_NEW_ICONST (cfg, iargs [2], n);
2937                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
2938         }
2939 }
2940
2941 /*
2942  * emit_get_rgctx:
2943  *
2944  *   Emit IR to return either the this pointer for instance method,
2945  * or the mrgctx for static methods.
2946  */
2947 static MonoInst*
2948 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
2949 {
2950         MonoInst *this_ins = NULL;
2951
2952         g_assert (cfg->gshared);
2953
2954         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
2955                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
2956                 !method->klass->valuetype)
2957                 EMIT_NEW_VARLOAD (cfg, this_ins, cfg->this_arg, &mono_defaults.object_class->byval_arg);
2958
2959         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
2960                 MonoInst *mrgctx_loc, *mrgctx_var;
2961
2962                 g_assert (!this_ins);
2963                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
2964
2965                 mrgctx_loc = mono_get_vtable_var (cfg);
2966                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2967
2968                 return mrgctx_var;
2969         } else if (MONO_CLASS_IS_INTERFACE (cfg->method->klass)) {
2970                 MonoInst *mrgctx_loc, *mrgctx_var;
2971
2972                 /* Default interface methods need an mrgctx since the vtabke at runtime points at an implementing class */
2973                 mrgctx_loc = mono_get_vtable_var (cfg);
2974                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
2975
2976                 g_assert (mono_method_needs_static_rgctx_invoke (cfg->method, TRUE));
2977
2978                 return mrgctx_var;
2979         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
2980                 MonoInst *vtable_loc, *vtable_var;
2981
2982                 g_assert (!this_ins);
2983
2984                 vtable_loc = mono_get_vtable_var (cfg);
2985                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
2986
2987                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
2988                         MonoInst *mrgctx_var = vtable_var;
2989                         int vtable_reg;
2990
2991                         vtable_reg = alloc_preg (cfg);
2992                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2993                         vtable_var->type = STACK_PTR;
2994                 }
2995
2996                 return vtable_var;
2997         } else {
2998                 MonoInst *ins;
2999                 int vtable_reg;
3000
3001                 vtable_reg = alloc_preg (cfg);
3002                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3003                 return ins;
3004         }
3005 }
3006
3007 static MonoJumpInfoRgctxEntry *
3008 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3009 {
3010         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3011         res->method = method;
3012         res->in_mrgctx = in_mrgctx;
3013         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3014         res->data->type = patch_type;
3015         res->data->data.target = patch_data;
3016         res->info_type = info_type;
3017
3018         return res;
3019 }
3020
3021 static inline MonoInst*
3022 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3023 {
3024         MonoInst *args [16];
3025         MonoInst *call;
3026
3027         // FIXME: No fastpath since the slot is not a compile time constant
3028         args [0] = rgctx;
3029         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3030         if (entry->in_mrgctx)
3031                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3032         else
3033                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3034         return call;
3035 #if 0
3036         /*
3037          * FIXME: This can be called during decompose, which is a problem since it creates
3038          * new bblocks.
3039          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3040          */
3041         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3042         gboolean mrgctx;
3043         MonoBasicBlock *is_null_bb, *end_bb;
3044         MonoInst *res, *ins, *call;
3045         MonoInst *args[16];
3046
3047         slot = mini_get_rgctx_entry_slot (entry);
3048
3049         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3050         index = MONO_RGCTX_SLOT_INDEX (slot);
3051         if (mrgctx)
3052                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3053         for (depth = 0; ; ++depth) {
3054                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3055
3056                 if (index < size - 1)
3057                         break;
3058                 index -= size - 1;
3059         }
3060
3061         NEW_BBLOCK (cfg, end_bb);
3062         NEW_BBLOCK (cfg, is_null_bb);
3063
3064         if (mrgctx) {
3065                 rgctx_reg = rgctx->dreg;
3066         } else {
3067                 rgctx_reg = alloc_preg (cfg);
3068
3069                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3070                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3071                 NEW_BBLOCK (cfg, is_null_bb);
3072
3073                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3074                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3075         }
3076
3077         for (i = 0; i < depth; ++i) {
3078                 int array_reg = alloc_preg (cfg);
3079
3080                 /* load ptr to next array */
3081                 if (mrgctx && i == 0)
3082                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3083                 else
3084                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3085                 rgctx_reg = array_reg;
3086                 /* is the ptr null? */
3087                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3088                 /* if yes, jump to actual trampoline */
3089                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3090         }
3091
3092         /* fetch slot */
3093         val_reg = alloc_preg (cfg);
3094         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3095         /* is the slot null? */
3096         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3097         /* if yes, jump to actual trampoline */
3098         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3099
3100         /* Fastpath */
3101         res_reg = alloc_preg (cfg);
3102         MONO_INST_NEW (cfg, ins, OP_MOVE);
3103         ins->dreg = res_reg;
3104         ins->sreg1 = val_reg;
3105         MONO_ADD_INS (cfg->cbb, ins);
3106         res = ins;
3107         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3108
3109         /* Slowpath */
3110         MONO_START_BB (cfg, is_null_bb);
3111         args [0] = rgctx;
3112         EMIT_NEW_ICONST (cfg, args [1], index);
3113         if (mrgctx)
3114                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3115         else
3116                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3117         MONO_INST_NEW (cfg, ins, OP_MOVE);
3118         ins->dreg = res_reg;
3119         ins->sreg1 = call->dreg;
3120         MONO_ADD_INS (cfg->cbb, ins);
3121         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3122
3123         MONO_START_BB (cfg, end_bb);
3124
3125         return res;
3126 #endif
3127 }
3128
3129 /*
3130  * emit_rgctx_fetch:
3131  *
3132  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3133  * given by RGCTX.
3134  */
3135 static inline MonoInst*
3136 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3137 {
3138         if (cfg->llvm_only)
3139                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3140         else
3141                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3142 }
3143
3144 MonoInst*
3145 mini_emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3146                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3147 {
3148         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3149         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3150
3151         return emit_rgctx_fetch (cfg, rgctx, entry);
3152 }
3153
3154 static MonoInst*
3155 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3156                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3157 {
3158         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3159         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3160
3161         return emit_rgctx_fetch (cfg, rgctx, entry);
3162 }
3163
3164 static MonoInst*
3165 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3166                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3167 {
3168         MonoJumpInfoGSharedVtCall *call_info;
3169         MonoJumpInfoRgctxEntry *entry;
3170         MonoInst *rgctx;
3171
3172         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3173         call_info->sig = sig;
3174         call_info->method = cmethod;
3175
3176         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3177         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3178
3179         return emit_rgctx_fetch (cfg, rgctx, entry);
3180 }
3181
3182 /*
3183  * emit_get_rgctx_virt_method:
3184  *
3185  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3186  */
3187 static MonoInst*
3188 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3189                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3190 {
3191         MonoJumpInfoVirtMethod *info;
3192         MonoJumpInfoRgctxEntry *entry;
3193         MonoInst *rgctx;
3194
3195         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3196         info->klass = klass;
3197         info->method = virt_method;
3198
3199         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3200         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3201
3202         return emit_rgctx_fetch (cfg, rgctx, entry);
3203 }
3204
3205 static MonoInst*
3206 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3207                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3208 {
3209         MonoJumpInfoRgctxEntry *entry;
3210         MonoInst *rgctx;
3211
3212         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3213         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3214
3215         return emit_rgctx_fetch (cfg, rgctx, entry);
3216 }
3217
3218 /*
3219  * emit_get_rgctx_method:
3220  *
3221  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3222  * normal constants, else emit a load from the rgctx.
3223  */
3224 static MonoInst*
3225 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3226                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3227 {
3228         if (!context_used) {
3229                 MonoInst *ins;
3230
3231                 switch (rgctx_type) {
3232                 case MONO_RGCTX_INFO_METHOD:
3233                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3234                         return ins;
3235                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3236                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3237                         return ins;
3238                 default:
3239                         g_assert_not_reached ();
3240                 }
3241         } else {
3242                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3243                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3244
3245                 return emit_rgctx_fetch (cfg, rgctx, entry);
3246         }
3247 }
3248
3249 static MonoInst*
3250 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3251                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3252 {
3253         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3254         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3255
3256         return emit_rgctx_fetch (cfg, rgctx, entry);
3257 }
3258
3259 static int
3260 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3261 {
3262         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3263         MonoRuntimeGenericContextInfoTemplate *template_;
3264         int i, idx;
3265
3266         g_assert (info);
3267
3268         for (i = 0; i < info->num_entries; ++i) {
3269                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3270
3271                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3272                         return i;
3273         }
3274
3275         if (info->num_entries == info->count_entries) {
3276                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3277                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3278
3279                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3280
3281                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3282                 info->entries = new_entries;
3283                 info->count_entries = new_count_entries;
3284         }
3285
3286         idx = info->num_entries;
3287         template_ = &info->entries [idx];
3288         template_->info_type = rgctx_type;
3289         template_->data = data;
3290
3291         info->num_entries ++;
3292
3293         return idx;
3294 }
3295
3296 /*
3297  * emit_get_gsharedvt_info:
3298  *
3299  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3300  */
3301 static MonoInst*
3302 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3303 {
3304         MonoInst *ins;
3305         int idx, dreg;
3306
3307         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3308         /* Load info->entries [idx] */
3309         dreg = alloc_preg (cfg);
3310         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3311
3312         return ins;
3313 }
3314
3315 MonoInst*
3316 mini_emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3317 {
3318         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3319 }
3320
3321 /*
3322  * On return the caller must check @klass for load errors.
3323  */
3324 static void
3325 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3326 {
3327         MonoInst *vtable_arg;
3328         int context_used;
3329
3330         context_used = mini_class_check_context_used (cfg, klass);
3331
3332         if (context_used) {
3333                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
3334                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3335         } else {
3336                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3337
3338                 if (!vtable)
3339                         return;
3340                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3341         }
3342
3343         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3344                 MonoInst *ins;
3345
3346                 /*
3347                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3348                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3349                  */
3350                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3351                 ins->sreg1 = vtable_arg->dreg;
3352                 MONO_ADD_INS (cfg->cbb, ins);
3353         } else {
3354                 int inited_reg;
3355                 MonoBasicBlock *inited_bb;
3356                 MonoInst *args [16];
3357
3358                 inited_reg = alloc_ireg (cfg);
3359
3360                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, inited_reg, vtable_arg->dreg, MONO_STRUCT_OFFSET (MonoVTable, initialized));
3361
3362                 NEW_BBLOCK (cfg, inited_bb);
3363
3364                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3365                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3366
3367                 args [0] = vtable_arg;
3368                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3369
3370                 MONO_START_BB (cfg, inited_bb);
3371         }
3372 }
3373
3374 static void
3375 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3376 {
3377         MonoInst *ins;
3378
3379         if (cfg->gen_seq_points && cfg->method == method) {
3380                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3381                 if (nonempty_stack)
3382                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3383                 MONO_ADD_INS (cfg->cbb, ins);
3384         }
3385 }
3386
3387 void
3388 mini_save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3389 {
3390         if (mini_get_debug_options ()->better_cast_details) {
3391                 int vtable_reg = alloc_preg (cfg);
3392                 int klass_reg = alloc_preg (cfg);
3393                 MonoBasicBlock *is_null_bb = NULL;
3394                 MonoInst *tls_get;
3395                 int to_klass_reg, context_used;
3396
3397                 if (null_check) {
3398                         NEW_BBLOCK (cfg, is_null_bb);
3399
3400                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3401                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3402                 }
3403
3404                 tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3405                 if (!tls_get) {
3406                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3407                         exit (1);
3408                 }
3409
3410                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3411                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3412
3413                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3414
3415                 context_used = mini_class_check_context_used (cfg, klass);
3416                 if (context_used) {
3417                         MonoInst *class_ins;
3418
3419                         class_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3420                         to_klass_reg = class_ins->dreg;
3421                 } else {
3422                         to_klass_reg = alloc_preg (cfg);
3423                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3424                 }
3425                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3426
3427                 if (null_check)
3428                         MONO_START_BB (cfg, is_null_bb);
3429         }
3430 }
3431
3432 void
3433 mini_reset_cast_details (MonoCompile *cfg)
3434 {
3435         /* Reset the variables holding the cast details */
3436         if (mini_get_debug_options ()->better_cast_details) {
3437                 MonoInst *tls_get = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
3438                 /* It is enough to reset the from field */
3439                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3440         }
3441 }
3442
3443 /*
3444  * On return the caller must check @array_class for load errors
3445  */
3446 static void
3447 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3448 {
3449         int vtable_reg = alloc_preg (cfg);
3450         int context_used;
3451
3452         context_used = mini_class_check_context_used (cfg, array_class);
3453
3454         mini_save_cast_details (cfg, array_class, obj->dreg, FALSE);
3455
3456         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3457
3458         if (cfg->opt & MONO_OPT_SHARED) {
3459                 int class_reg = alloc_preg (cfg);
3460                 MonoInst *ins;
3461
3462                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3463                 ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3464                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3465         } else if (context_used) {
3466                 MonoInst *vtable_ins;
3467
3468                 vtable_ins = mini_emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3469                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3470         } else {
3471                 if (cfg->compile_aot) {
3472                         int vt_reg;
3473                         MonoVTable *vtable;
3474
3475                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3476                                 return;
3477                         vt_reg = alloc_preg (cfg);
3478                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
3479                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
3480                 } else {
3481                         MonoVTable *vtable;
3482                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
3483                                 return;
3484                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
3485                 }
3486         }
3487
3488         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
3489
3490         mini_reset_cast_details (cfg);
3491 }
3492
3493 /**
3494  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3495  * generic code is generated.
3496  */
3497 static MonoInst*
3498 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
3499 {
3500         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
3501
3502         if (context_used) {
3503                 MonoInst *rgctx, *addr;
3504
3505                 /* FIXME: What if the class is shared?  We might not
3506                    have to get the address of the method from the
3507                    RGCTX. */
3508                 addr = emit_get_rgctx_method (cfg, context_used, method,
3509                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3510                 if (cfg->llvm_only) {
3511                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, mono_method_signature (method));
3512                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3513                 } else {
3514                         rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3515
3516                         return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3517                 }
3518         } else {
3519                 gboolean pass_vtable, pass_mrgctx;
3520                 MonoInst *rgctx_arg = NULL;
3521
3522                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3523                 g_assert (!pass_mrgctx);
3524
3525                 if (pass_vtable) {
3526                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3527
3528                         g_assert (vtable);
3529                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3530                 }
3531
3532                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3533         }
3534 }
3535
3536 static MonoInst*
3537 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
3538 {
3539         MonoInst *add;
3540         int obj_reg;
3541         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
3542         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
3543         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
3544         int rank_reg = alloc_dreg (cfg ,STACK_I4);
3545
3546         obj_reg = sp [0]->dreg;
3547         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
3549
3550         /* FIXME: generics */
3551         g_assert (klass->rank == 0);
3552
3553         // Check rank == 0
3554         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
3555         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3556
3557         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3558         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
3559
3560         if (context_used) {
3561                 MonoInst *element_class;
3562
3563                 /* This assertion is from the unboxcast insn */
3564                 g_assert (klass->rank == 0);
3565
3566                 element_class = mini_emit_get_rgctx_klass (cfg, context_used,
3567                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
3568
3569                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
3570                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
3571         } else {
3572                 mini_save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
3573                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
3574                 mini_reset_cast_details (cfg);
3575         }
3576
3577         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3578         MONO_ADD_INS (cfg->cbb, add);
3579         add->type = STACK_MP;
3580         add->klass = klass;
3581
3582         return add;
3583 }
3584
3585 static MonoInst*
3586 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
3587 {
3588         MonoInst *addr, *klass_inst, *is_ref, *args[16];
3589         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3590         MonoInst *ins;
3591         int dreg, addr_reg;
3592
3593         klass_inst = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
3594
3595         /* obj */
3596         args [0] = obj;
3597
3598         /* klass */
3599         args [1] = klass_inst;
3600
3601         /* CASTCLASS */
3602         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
3603
3604         NEW_BBLOCK (cfg, is_ref_bb);
3605         NEW_BBLOCK (cfg, is_nullable_bb);
3606         NEW_BBLOCK (cfg, end_bb);
3607         is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3608         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3609         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3610
3611         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3612         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3613
3614         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
3615         addr_reg = alloc_dreg (cfg, STACK_MP);
3616
3617         /* Non-ref case */
3618         /* UNBOX */
3619         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
3620         MONO_ADD_INS (cfg->cbb, addr);
3621
3622         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3623
3624         /* Ref case */
3625         MONO_START_BB (cfg, is_ref_bb);
3626
3627         /* Save the ref to a temporary */
3628         dreg = alloc_ireg (cfg);
3629         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
3630         addr->dreg = addr_reg;
3631         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
3632         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3633
3634         /* Nullable case */
3635         MONO_START_BB (cfg, is_nullable_bb);
3636
3637         {
3638                 MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
3639                 MonoInst *unbox_call;
3640                 MonoMethodSignature *unbox_sig;
3641
3642                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3643                 unbox_sig->ret = &klass->byval_arg;
3644                 unbox_sig->param_count = 1;
3645                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
3646
3647                 if (cfg->llvm_only)
3648                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
3649                 else
3650                         unbox_call = mini_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
3651
3652                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
3653                 addr->dreg = addr_reg;
3654         }
3655
3656         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3657
3658         /* End */
3659         MONO_START_BB (cfg, end_bb);
3660
3661         /* LDOBJ */
3662         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
3663
3664         return ins;
3665 }
3666
3667 /*
3668  * Returns NULL and set the cfg exception on error.
3669  */
3670 static MonoInst*
3671 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
3672 {
3673         MonoInst *iargs [2];
3674         void *alloc_ftn;
3675
3676         if (context_used) {
3677                 MonoInst *data;
3678                 MonoRgctxInfoType rgctx_info;
3679                 MonoInst *iargs [2];
3680                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
3681
3682                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
3683
3684                 if (cfg->opt & MONO_OPT_SHARED)
3685                         rgctx_info = MONO_RGCTX_INFO_KLASS;
3686                 else
3687                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
3688                 data = mini_emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
3689
3690                 if (cfg->opt & MONO_OPT_SHARED) {
3691                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3692                         iargs [1] = data;
3693                         alloc_ftn = ves_icall_object_new;
3694                 } else {
3695                         iargs [0] = data;
3696                         alloc_ftn = ves_icall_object_new_specific;
3697                 }
3698
3699                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
3700                         if (known_instance_size) {
3701                                 int size = mono_class_instance_size (klass);
3702                                 if (size < sizeof (MonoObject))
3703                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3704
3705                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
3706                         }
3707                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3708                 }
3709
3710                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3711         }
3712
3713         if (cfg->opt & MONO_OPT_SHARED) {
3714                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
3715                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
3716
3717                 alloc_ftn = ves_icall_object_new;
3718         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !mono_class_is_ginst (klass)) {
3719                 /* This happens often in argument checking code, eg. throw new FooException... */
3720                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3721                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
3722                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
3723         } else {
3724                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3725                 MonoMethod *managed_alloc = NULL;
3726                 gboolean pass_lw;
3727
3728                 if (!vtable) {
3729                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
3730                         cfg->exception_ptr = klass;
3731                         return NULL;
3732                 }
3733
3734                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
3735
3736                 if (managed_alloc) {
3737                         int size = mono_class_instance_size (klass);
3738                         if (size < sizeof (MonoObject))
3739                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
3740
3741                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3742                         EMIT_NEW_ICONST (cfg, iargs [1], size);
3743                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
3744                 }
3745                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
3746                 if (pass_lw) {
3747                         guint32 lw = vtable->klass->instance_size;
3748                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
3749                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
3750                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
3751                 }
3752                 else {
3753                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
3754                 }
3755         }
3756
3757         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
3758 }
3759
3760 /*
3761  * Returns NULL and set the cfg exception on error.
3762  */
3763 static MonoInst*
3764 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
3765 {
3766         MonoInst *alloc, *ins;
3767
3768         if (mono_class_is_nullable (klass)) {
3769                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
3770
3771                 if (context_used) {
3772                         if (cfg->llvm_only && cfg->gsharedvt) {
3773                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3774                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3775                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
3776                         } else {
3777                                 /* FIXME: What if the class is shared?  We might not
3778                                    have to get the method address from the RGCTX. */
3779                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
3780                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3781                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->method, context_used);
3782
3783                                 return mini_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
3784                         }
3785                 } else {
3786                         gboolean pass_vtable, pass_mrgctx;
3787                         MonoInst *rgctx_arg = NULL;
3788
3789                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
3790                         g_assert (!pass_mrgctx);
3791
3792                         if (pass_vtable) {
3793                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
3794
3795                                 g_assert (vtable);
3796                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
3797                         }
3798
3799                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
3800                 }
3801         }
3802
3803         if (mini_is_gsharedvt_klass (klass)) {
3804                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
3805                 MonoInst *res, *is_ref, *src_var, *addr;
3806                 int dreg;
3807
3808                 dreg = alloc_ireg (cfg);
3809
3810                 NEW_BBLOCK (cfg, is_ref_bb);
3811                 NEW_BBLOCK (cfg, is_nullable_bb);
3812                 NEW_BBLOCK (cfg, end_bb);
3813                 is_ref = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
3814                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
3815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
3816
3817                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
3818                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
3819
3820                 /* Non-ref case */
3821                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3822                 if (!alloc)
3823                         return NULL;
3824                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3825                 ins->opcode = OP_STOREV_MEMBASE;
3826
3827                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
3828                 res->type = STACK_OBJ;
3829                 res->klass = klass;
3830                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3831
3832                 /* Ref case */
3833                 MONO_START_BB (cfg, is_ref_bb);
3834
3835                 /* val is a vtype, so has to load the value manually */
3836                 src_var = get_vreg_to_inst (cfg, val->dreg);
3837                 if (!src_var)
3838                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
3839                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
3840                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
3841                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3842
3843                 /* Nullable case */
3844                 MONO_START_BB (cfg, is_nullable_bb);
3845
3846                 {
3847                         MonoInst *addr = mini_emit_get_gsharedvt_info_klass (cfg, klass,
3848                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
3849                         MonoInst *box_call;
3850                         MonoMethodSignature *box_sig;
3851
3852                         /*
3853                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
3854                          * construct that method at JIT time, so have to do things by hand.
3855                          */
3856                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
3857                         box_sig->ret = &mono_defaults.object_class->byval_arg;
3858                         box_sig->param_count = 1;
3859                         box_sig->params [0] = &klass->byval_arg;
3860
3861                         if (cfg->llvm_only)
3862                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
3863                         else
3864                                 box_call = mini_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
3865                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
3866                         res->type = STACK_OBJ;
3867                         res->klass = klass;
3868                 }
3869
3870                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3871
3872                 MONO_START_BB (cfg, end_bb);
3873
3874                 return res;
3875         } else {
3876                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
3877                 if (!alloc)
3878                         return NULL;
3879
3880                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3881                 return alloc;
3882         }
3883 }
3884
3885 static GHashTable* direct_icall_type_hash;
3886
3887 static gboolean
3888 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
3889 {
3890         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3891         if (!direct_icalls_enabled (cfg))
3892                 return FALSE;
3893
3894         /*
3895          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
3896          * Whitelist a few icalls for now.
3897          */
3898         if (!direct_icall_type_hash) {
3899                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
3900
3901                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
3902                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
3903                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
3904                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
3905                 mono_memory_barrier ();
3906                 direct_icall_type_hash = h;
3907         }
3908
3909         if (cmethod->klass == mono_defaults.math_class)
3910                 return TRUE;
3911         /* No locking needed */
3912         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
3913                 return TRUE;
3914         return FALSE;
3915 }
3916
3917 static gboolean
3918 method_needs_stack_walk (MonoCompile *cfg, MonoMethod *cmethod)
3919 {
3920         if (cmethod->klass == mono_defaults.systemtype_class) {
3921                 if (!strcmp (cmethod->name, "GetType"))
3922                         return TRUE;
3923         }
3924         return FALSE;
3925 }
3926
3927 static G_GNUC_UNUSED MonoInst*
3928 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
3929 {
3930         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
3931         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
3932         gboolean is_i4;
3933
3934         switch (enum_type->type) {
3935         case MONO_TYPE_I8:
3936         case MONO_TYPE_U8:
3937 #if SIZEOF_REGISTER == 8
3938         case MONO_TYPE_I:
3939         case MONO_TYPE_U:
3940 #endif
3941                 is_i4 = FALSE;
3942                 break;
3943         default:
3944                 is_i4 = TRUE;
3945                 break;
3946         }
3947
3948         {
3949                 MonoInst *load, *and_, *cmp, *ceq;
3950                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3951                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
3952                 int dest_reg = alloc_ireg (cfg);
3953
3954                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
3955                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
3956                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
3957                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
3958
3959                 ceq->type = STACK_I4;
3960
3961                 if (!is_i4) {
3962                         load = mono_decompose_opcode (cfg, load);
3963                         and_ = mono_decompose_opcode (cfg, and_);
3964                         cmp = mono_decompose_opcode (cfg, cmp);
3965                         ceq = mono_decompose_opcode (cfg, ceq);
3966                 }
3967
3968                 return ceq;
3969         }
3970 }
3971
3972 /*
3973  * Returns NULL and set the cfg exception on error.
3974  */
3975 static G_GNUC_UNUSED MonoInst*
3976 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
3977 {
3978         MonoInst *ptr;
3979         int dreg;
3980         gpointer trampoline;
3981         MonoInst *obj, *method_ins, *tramp_ins;
3982         MonoDomain *domain;
3983         guint8 **code_slot;
3984
3985         if (virtual_ && !cfg->llvm_only) {
3986                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
3987                 g_assert (invoke);
3988
3989                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
3990                         return NULL;
3991         }
3992
3993         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
3994         if (!obj)
3995                 return NULL;
3996
3997         /* Inline the contents of mono_delegate_ctor */
3998
3999         /* Set target field */
4000         /* Optimize away setting of NULL target */
4001         if (!MONO_INS_IS_PCONST_NULL (target)) {
4002                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
4003                 if (cfg->gen_write_barriers) {
4004                         dreg = alloc_preg (cfg);
4005                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
4006                         mini_emit_write_barrier (cfg, ptr, target);
4007                 }
4008         }
4009
4010         /* Set method field */
4011         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4012         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
4013
4014         /*
4015          * To avoid looking up the compiled code belonging to the target method
4016          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
4017          * store it, and we fill it after the method has been compiled.
4018          */
4019         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
4020                 MonoInst *code_slot_ins;
4021
4022                 if (context_used) {
4023                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
4024                 } else {
4025                         domain = mono_domain_get ();
4026                         mono_domain_lock (domain);
4027                         if (!domain_jit_info (domain)->method_code_hash)
4028                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
4029                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
4030                         if (!code_slot) {
4031                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
4032                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
4033                         }
4034                         mono_domain_unlock (domain);
4035
4036                         code_slot_ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
4037                 }
4038                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
4039         }
4040
4041         if (cfg->llvm_only) {
4042                 MonoInst *args [16];
4043
4044                 if (virtual_) {
4045                         args [0] = obj;
4046                         args [1] = target;
4047                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
4048                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
4049                 } else {
4050                         args [0] = obj;
4051                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
4052                 }
4053
4054                 return obj;
4055         }
4056
4057         if (cfg->compile_aot) {
4058                 MonoDelegateClassMethodPair *del_tramp;
4059
4060                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
4061                 del_tramp->klass = klass;
4062                 del_tramp->method = context_used ? NULL : method;
4063                 del_tramp->is_virtual = virtual_;
4064                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
4065         } else {
4066                 if (virtual_)
4067                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
4068                 else
4069                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
4070                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
4071         }
4072
4073         /* Set invoke_impl field */
4074         if (virtual_) {
4075                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
4076         } else {
4077                 dreg = alloc_preg (cfg);
4078                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
4079                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
4080
4081                 dreg = alloc_preg (cfg);
4082                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
4083                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
4084         }
4085
4086         dreg = alloc_preg (cfg);
4087         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
4088         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
4089
4090         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
4091
4092         return obj;
4093 }
4094
4095 static MonoInst*
4096 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
4097 {
4098         MonoJitICallInfo *info;
4099
4100         /* Need to register the icall so it gets an icall wrapper */
4101         info = mono_get_array_new_va_icall (rank);
4102
4103         cfg->flags |= MONO_CFG_HAS_VARARGS;
4104
4105         /* mono_array_new_va () needs a vararg calling convention */
4106         cfg->exception_message = g_strdup ("array-new");
4107         cfg->disable_llvm = TRUE;
4108
4109         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
4110         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
4111 }
4112
4113 /*
4114  * handle_constrained_gsharedvt_call:
4115  *
4116  *   Handle constrained calls where the receiver is a gsharedvt type.
4117  * Return the instruction representing the call. Set the cfg exception on failure.
4118  */
4119 static MonoInst*
4120 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
4121                                                                    gboolean *ref_emit_widen)
4122 {
4123         MonoInst *ins = NULL;
4124         gboolean emit_widen = *ref_emit_widen;
4125
4126         /*
4127          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
4128          * This is hard to do with the current call code, since we would have to emit a branch and two different calls. So instead, we
4129          * pack the arguments into an array, and do the rest of the work in in an icall.
4130          */
4131         if (((cmethod->klass == mono_defaults.object_class) || mono_class_is_interface (cmethod->klass) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
4132                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret)) || mini_is_gsharedvt_type (fsig->ret)) &&
4133                 (fsig->param_count == 0 || (!fsig->hasthis && fsig->param_count == 1) || (fsig->param_count == 1 && (MONO_TYPE_IS_REFERENCE (fsig->params [0]) || fsig->params [0]->byref || mini_is_gsharedvt_type (fsig->params [0]))))) {
4134                 MonoInst *args [16];
4135
4136                 /*
4137                  * This case handles calls to
4138                  * - object:ToString()/Equals()/GetHashCode(),
4139                  * - System.IComparable<T>:CompareTo()
4140                  * - System.IEquatable<T>:Equals ()
4141                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
4142                  */
4143
4144                 args [0] = sp [0];
4145                 if (mono_method_check_context_used (cmethod))
4146                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
4147                 else
4148                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
4149                 args [2] = mini_emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
4150
4151                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
4152                 if (fsig->hasthis && fsig->param_count) {
4153                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
4154                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
4155                         ins->dreg = alloc_preg (cfg);
4156                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
4157                         MONO_ADD_INS (cfg->cbb, ins);
4158                         args [4] = ins;
4159
4160                         if (mini_is_gsharedvt_type (fsig->params [0])) {
4161                                 int addr_reg, deref_arg_reg;
4162
4163                                 ins = mini_emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4164                                 deref_arg_reg = alloc_preg (cfg);
4165                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
4166                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
4167
4168                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
4169                                 addr_reg = ins->dreg;
4170                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
4171                         } else {
4172                                 EMIT_NEW_ICONST (cfg, args [3], 0);
4173                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
4174                         }
4175                 } else {
4176                         EMIT_NEW_ICONST (cfg, args [3], 0);
4177                         EMIT_NEW_ICONST (cfg, args [4], 0);
4178                 }
4179                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
4180                 emit_widen = FALSE;
4181
4182                 if (mini_is_gsharedvt_type (fsig->ret)) {
4183                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
4184                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mono_class_is_enum (mono_class_from_mono_type (fsig->ret))) {
4185                         MonoInst *add;
4186
4187                         /* Unbox */
4188                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
4189                         MONO_ADD_INS (cfg->cbb, add);
4190                         /* Load value */
4191                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
4192                         MONO_ADD_INS (cfg->cbb, ins);
4193                         /* ins represents the call result */
4194                 }
4195         } else {
4196                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
4197         }
4198
4199         *ref_emit_widen = emit_widen;
4200
4201         return ins;
4202
4203  exception_exit:
4204         return NULL;
4205 }
4206
4207 static void
4208 mono_emit_load_got_addr (MonoCompile *cfg)
4209 {
4210         MonoInst *getaddr, *dummy_use;
4211
4212         if (!cfg->got_var || cfg->got_var_allocated)
4213                 return;
4214
4215         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
4216         getaddr->cil_code = cfg->header->code;
4217         getaddr->dreg = cfg->got_var->dreg;
4218
4219         /* Add it to the start of the first bblock */
4220         if (cfg->bb_entry->code) {
4221                 getaddr->next = cfg->bb_entry->code;
4222                 cfg->bb_entry->code = getaddr;
4223         }
4224         else
4225                 MONO_ADD_INS (cfg->bb_entry, getaddr);
4226
4227         cfg->got_var_allocated = TRUE;
4228
4229         /*
4230          * Add a dummy use to keep the got_var alive, since real uses might
4231          * only be generated by the back ends.
4232          * Add it to end_bblock, so the variable's lifetime covers the whole
4233          * method.
4234          * It would be better to make the usage of the got var explicit in all
4235          * cases when the backend needs it (i.e. calls, throw etc.), so this
4236          * wouldn't be needed.
4237          */
4238         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
4239         MONO_ADD_INS (cfg->bb_exit, dummy_use);
4240 }
4241
4242 static int inline_limit;
4243 static gboolean inline_limit_inited;
4244
4245 static gboolean
4246 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
4247 {
4248         MonoMethodHeaderSummary header;
4249         MonoVTable *vtable;
4250 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4251         MonoMethodSignature *sig = mono_method_signature (method);
4252         int i;
4253 #endif
4254
4255         if (cfg->disable_inline)
4256                 return FALSE;
4257         if (cfg->gsharedvt)
4258                 return FALSE;
4259
4260         if (cfg->inline_depth > 10)
4261                 return FALSE;
4262
4263         if (!mono_method_get_header_summary (method, &header))
4264                 return FALSE;
4265
4266         /*runtime, icall and pinvoke are checked by summary call*/
4267         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
4268             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
4269             (mono_class_is_marshalbyref (method->klass)) ||
4270             header.has_clauses)
4271                 return FALSE;
4272
4273         /* also consider num_locals? */
4274         /* Do the size check early to avoid creating vtables */
4275         if (!inline_limit_inited) {
4276                 char *inlinelimit;
4277                 if ((inlinelimit = g_getenv ("MONO_INLINELIMIT"))) {
4278                         inline_limit = atoi (inlinelimit);
4279                         g_free (inlinelimit);
4280                 } else
4281                         inline_limit = INLINE_LENGTH_LIMIT;
4282                 inline_limit_inited = TRUE;
4283         }
4284         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
4285                 return FALSE;
4286
4287         /*
4288          * if we can initialize the class of the method right away, we do,
4289          * otherwise we don't allow inlining if the class needs initialization,
4290          * since it would mean inserting a call to mono_runtime_class_init()
4291          * inside the inlined code
4292          */
4293         if (cfg->gshared && method->klass->has_cctor && mini_class_check_context_used (cfg, method->klass))
4294                 return FALSE;
4295
4296         if (!(cfg->opt & MONO_OPT_SHARED)) {
4297                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
4298                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
4299                         if (method->klass->has_cctor) {
4300                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4301                                 if (!vtable)
4302                                         return FALSE;
4303                                 if (!cfg->compile_aot) {
4304                                         MonoError error;
4305                                         if (!mono_runtime_class_init_full (vtable, &error)) {
4306                                                 mono_error_cleanup (&error);
4307                                                 return FALSE;
4308                                         }
4309                                 }
4310                         }
4311                 } else if (mono_class_is_before_field_init (method->klass)) {
4312                         if (cfg->run_cctors && method->klass->has_cctor) {
4313                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
4314                                 if (!method->klass->runtime_info)
4315                                         /* No vtable created yet */
4316                                         return FALSE;
4317                                 vtable = mono_class_vtable (cfg->domain, method->klass);
4318                                 if (!vtable)
4319                                         return FALSE;
4320                                 /* This makes so that inline cannot trigger */
4321                                 /* .cctors: too many apps depend on them */
4322                                 /* running with a specific order... */
4323                                 if (! vtable->initialized)
4324                                         return FALSE;
4325                                 MonoError error;
4326                                 if (!mono_runtime_class_init_full (vtable, &error)) {
4327                                         mono_error_cleanup (&error);
4328                                         return FALSE;
4329                                 }
4330                         }
4331                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
4332                         if (!method->klass->runtime_info)
4333                                 /* No vtable created yet */
4334                                 return FALSE;
4335                         vtable = mono_class_vtable (cfg->domain, method->klass);
4336                         if (!vtable)
4337                                 return FALSE;
4338                         if (!vtable->initialized)
4339                                 return FALSE;
4340                 }
4341         } else {
4342                 /*
4343                  * If we're compiling for shared code
4344                  * the cctor will need to be run at aot method load time, for example,
4345                  * or at the end of the compilation of the inlining method.
4346                  */
4347                 if (mono_class_needs_cctor_run (method->klass, NULL) && !mono_class_is_before_field_init (method->klass))
4348                         return FALSE;
4349         }
4350
4351 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
4352         if (mono_arch_is_soft_float ()) {
4353                 /* FIXME: */
4354                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
4355                         return FALSE;
4356                 for (i = 0; i < sig->param_count; ++i)
4357                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
4358                                 return FALSE;
4359         }
4360 #endif
4361
4362         if (g_list_find (cfg->dont_inline, method))
4363                 return FALSE;
4364
4365         return TRUE;
4366 }
4367
4368 static gboolean
4369 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
4370 {
4371         if (!cfg->compile_aot) {
4372                 g_assert (vtable);
4373                 if (vtable->initialized)
4374                         return FALSE;
4375         }
4376
4377         if (mono_class_is_before_field_init (klass)) {
4378                 if (cfg->method == method)
4379                         return FALSE;
4380         }
4381
4382         if (!mono_class_needs_cctor_run (klass, method))
4383                 return FALSE;
4384
4385         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
4386                 /* The initialization is already done before the method is called */
4387                 return FALSE;
4388
4389         return TRUE;
4390 }
4391
4392 MonoInst*
4393 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4394 {
4395         MonoInst *ins;
4396         guint32 size;
4397         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
4398         int context_used;
4399
4400         if (mini_is_gsharedvt_variable_klass (klass)) {
4401                 size = -1;
4402         } else {
4403                 mono_class_init (klass);
4404                 size = mono_class_array_element_size (klass);
4405         }
4406
4407         mult_reg = alloc_preg (cfg);
4408         array_reg = arr->dreg;
4409         index_reg = index->dreg;
4410
4411 #if SIZEOF_REGISTER == 8
4412         /* The array reg is 64 bits but the index reg is only 32 */
4413         if (COMPILE_LLVM (cfg)) {
4414                 /*
4415                  * abcrem can't handle the OP_SEXT_I4, so add this after abcrem,
4416                  * during OP_BOUNDS_CHECK decomposition, and in the implementation
4417                  * of OP_X86_LEA for llvm.
4418                  */
4419                 index2_reg = index_reg;
4420         } else {
4421                 index2_reg = alloc_preg (cfg);
4422                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
4423         }
4424 #else
4425         if (index->type == STACK_I8) {
4426                 index2_reg = alloc_preg (cfg);
4427                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
4428         } else {
4429                 index2_reg = index_reg;
4430         }
4431 #endif
4432
4433         if (bcheck)
4434                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
4435
4436 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4437         if (size == 1 || size == 2 || size == 4 || size == 8) {
4438                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
4439
4440                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
4441                 ins->klass = mono_class_get_element_class (klass);
4442                 ins->type = STACK_MP;
4443
4444                 return ins;
4445         }
4446 #endif
4447
4448         add_reg = alloc_ireg_mp (cfg);
4449
4450         if (size == -1) {
4451                 MonoInst *rgctx_ins;
4452
4453                 /* gsharedvt */
4454                 g_assert (cfg->gshared);
4455                 context_used = mini_class_check_context_used (cfg, klass);
4456                 g_assert (context_used);
4457                 rgctx_ins = mini_emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
4458                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
4459         } else {
4460                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
4461         }
4462         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
4463         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4464         ins->klass = mono_class_get_element_class (klass);
4465         ins->type = STACK_MP;
4466         MONO_ADD_INS (cfg->cbb, ins);
4467
4468         return ins;
4469 }
4470
4471 static MonoInst*
4472 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4473 {
4474         int bounds_reg = alloc_preg (cfg);
4475         int add_reg = alloc_ireg_mp (cfg);
4476         int mult_reg = alloc_preg (cfg);
4477         int mult2_reg = alloc_preg (cfg);
4478         int low1_reg = alloc_preg (cfg);
4479         int low2_reg = alloc_preg (cfg);
4480         int high1_reg = alloc_preg (cfg);
4481         int high2_reg = alloc_preg (cfg);
4482         int realidx1_reg = alloc_preg (cfg);
4483         int realidx2_reg = alloc_preg (cfg);
4484         int sum_reg = alloc_preg (cfg);
4485         int index1, index2, tmpreg;
4486         MonoInst *ins;
4487         guint32 size;
4488
4489         mono_class_init (klass);
4490         size = mono_class_array_element_size (klass);
4491
4492         index1 = index_ins1->dreg;
4493         index2 = index_ins2->dreg;
4494
4495 #if SIZEOF_REGISTER == 8
4496         /* The array reg is 64 bits but the index reg is only 32 */
4497         if (COMPILE_LLVM (cfg)) {
4498                 /* Not needed */
4499         } else {
4500                 tmpreg = alloc_preg (cfg);
4501                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
4502                 index1 = tmpreg;
4503                 tmpreg = alloc_preg (cfg);
4504                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
4505                 index2 = tmpreg;
4506         }
4507 #else
4508         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
4509         tmpreg = -1;
4510 #endif
4511
4512         /* range checking */
4513         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
4514                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4515
4516         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
4517                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4518         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
4519         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
4520                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4521         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
4522         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4523
4524         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
4525                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
4526         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
4527         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
4528                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
4529         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
4530         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
4531
4532         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
4533         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
4534         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
4535         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
4536         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
4537
4538         ins->type = STACK_MP;
4539         ins->klass = klass;
4540         MONO_ADD_INS (cfg->cbb, ins);
4541
4542         return ins;
4543 }
4544
4545 static MonoInst*
4546 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4547 {
4548         int rank;
4549         MonoInst *addr;
4550         MonoMethod *addr_method;
4551         int element_size;
4552         MonoClass *eclass = cmethod->klass->element_class;
4553
4554         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
4555
4556         if (rank == 1)
4557                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
4558
4559         /* emit_ldelema_2 depends on OP_LMUL */
4560         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
4561                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
4562         }
4563
4564         if (mini_is_gsharedvt_variable_klass (eclass))
4565                 element_size = 0;
4566         else
4567                 element_size = mono_class_array_element_size (eclass);
4568         addr_method = mono_marshal_get_array_address (rank, element_size);
4569         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
4570
4571         return addr;
4572 }
4573
4574 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4575 static MonoInst*
4576 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4577 {
4578         MonoInst *addr, *store, *load;
4579         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
4580
4581         /* the bounds check is already done by the callers */
4582         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4583         if (is_set) {
4584                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
4585                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
4586                 if (mini_type_is_reference (&eklass->byval_arg))
4587                         mini_emit_write_barrier (cfg, addr, load);
4588         } else {
4589                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
4590                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
4591         }
4592         return store;
4593 }
4594
4595
4596 static gboolean
4597 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
4598 {
4599         return mini_type_is_reference (&klass->byval_arg);
4600 }
4601
4602 static MonoInst*
4603 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
4604 {
4605         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
4606                 !(MONO_INS_IS_PCONST_NULL (sp [2]))) {
4607                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
4608                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
4609                 MonoInst *iargs [3];
4610
4611                 if (!helper->slot)
4612                         mono_class_setup_vtable (obj_array);
4613                 g_assert (helper->slot);
4614
4615                 if (sp [0]->type != STACK_OBJ)
4616                         return NULL;
4617                 if (sp [2]->type != STACK_OBJ)
4618                         return NULL;
4619
4620                 iargs [2] = sp [2];
4621                 iargs [1] = sp [1];
4622                 iargs [0] = sp [0];
4623
4624                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
4625         } else {
4626                 MonoInst *ins;
4627
4628                 if (mini_is_gsharedvt_variable_klass (klass)) {
4629                         MonoInst *addr;
4630
4631                         // FIXME-VT: OP_ICONST optimization
4632                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
4633                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4634                         ins->opcode = OP_STOREV_MEMBASE;
4635                 } else if (sp [1]->opcode == OP_ICONST) {
4636                         int array_reg = sp [0]->dreg;
4637                         int index_reg = sp [1]->dreg;
4638                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
4639
4640                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
4641                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
4642
4643                         if (safety_checks)
4644                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
4645                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
4646                 } else {
4647                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
4648                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
4649                         if (generic_class_is_reference_type (cfg, klass))
4650                                 mini_emit_write_barrier (cfg, addr, sp [2]);
4651                 }
4652                 return ins;
4653         }
4654 }
4655
4656 static MonoInst*
4657 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4658 {
4659         MonoClass *eklass;
4660
4661         if (is_set)
4662                 eklass = mono_class_from_mono_type (fsig->params [2]);
4663         else
4664                 eklass = mono_class_from_mono_type (fsig->ret);
4665
4666         if (is_set) {
4667                 return emit_array_store (cfg, eklass, args, FALSE);
4668         } else {
4669                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
4670                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
4671                 return ins;
4672         }
4673 }
4674
4675 static gboolean
4676 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
4677 {
4678         uint32_t align;
4679         int param_size, return_size;
4680
4681         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
4682         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
4683
4684         if (cfg->verbose_level > 3)
4685                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
4686
4687         //Don't allow mixing reference types with value types
4688         if (param_klass->valuetype != return_klass->valuetype) {
4689                 if (cfg->verbose_level > 3)
4690                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
4691                 return FALSE;
4692         }
4693
4694         if (!param_klass->valuetype) {
4695                 if (cfg->verbose_level > 3)
4696                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
4697                 return TRUE;
4698         }
4699
4700         //That are blitable
4701         if (param_klass->has_references || return_klass->has_references)
4702                 return FALSE;
4703
4704         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
4705         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
4706                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
4707                         if (cfg->verbose_level > 3)
4708                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
4709                 return FALSE;
4710         }
4711
4712         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
4713                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
4714                 if (cfg->verbose_level > 3)
4715                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
4716                 return FALSE;
4717         }
4718
4719         param_size = mono_class_value_size (param_klass, &align);
4720         return_size = mono_class_value_size (return_klass, &align);
4721
4722         //We can do it if sizes match
4723         if (param_size == return_size) {
4724                 if (cfg->verbose_level > 3)
4725                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
4726                 return TRUE;
4727         }
4728
4729         //No simple way to handle struct if sizes don't match
4730         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
4731                 if (cfg->verbose_level > 3)
4732                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
4733                 return FALSE;
4734         }
4735
4736         /*
4737          * Same reg size category.
4738          * A quick note on why we don't require widening here.
4739          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
4740          *
4741          * Since the source value comes from a function argument, the JIT will already have
4742          * the value in a VREG and performed any widening needed before (say, when loading from a field).
4743          */
4744         if (param_size <= 4 && return_size <= 4) {
4745                 if (cfg->verbose_level > 3)
4746                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
4747                 return TRUE;
4748         }
4749
4750         return FALSE;
4751 }
4752
4753 static MonoInst*
4754 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
4755 {
4756         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
4757         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
4758
4759         if (mini_is_gsharedvt_variable_type (fsig->ret))
4760                 return NULL;
4761
4762         //Valuetypes that are semantically equivalent or numbers than can be widened to
4763         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
4764                 return args [0];
4765
4766         //Arrays of valuetypes that are semantically equivalent
4767         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
4768                 return args [0];
4769
4770         return NULL;
4771 }
4772
4773 static MonoInst*
4774 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4775 {
4776 #ifdef MONO_ARCH_SIMD_INTRINSICS
4777         MonoInst *ins = NULL;
4778
4779         if (cfg->opt & MONO_OPT_SIMD) {
4780                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
4781                 if (ins)
4782                         return ins;
4783         }
4784 #endif
4785
4786         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
4787 }
4788
4789 MonoInst*
4790 mini_emit_memory_barrier (MonoCompile *cfg, int kind)
4791 {
4792         MonoInst *ins = NULL;
4793         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4794         MONO_ADD_INS (cfg->cbb, ins);
4795         ins->backend.memory_barrier_kind = kind;
4796
4797         return ins;
4798 }
4799
4800 static MonoInst*
4801 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4802 {
4803         MonoInst *ins = NULL;
4804         int opcode = 0;
4805
4806         /* The LLVM backend supports these intrinsics */
4807         if (cmethod->klass == mono_defaults.math_class) {
4808                 if (strcmp (cmethod->name, "Sin") == 0) {
4809                         opcode = OP_SIN;
4810                 } else if (strcmp (cmethod->name, "Cos") == 0) {
4811                         opcode = OP_COS;
4812                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
4813                         opcode = OP_SQRT;
4814                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
4815                         opcode = OP_ABS;
4816                 }
4817
4818                 if (opcode && fsig->param_count == 1) {
4819                         MONO_INST_NEW (cfg, ins, opcode);
4820                         ins->type = STACK_R8;
4821                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4822                         ins->sreg1 = args [0]->dreg;
4823                         MONO_ADD_INS (cfg->cbb, ins);
4824                 }
4825
4826                 opcode = 0;
4827                 if (cfg->opt & MONO_OPT_CMOV) {
4828                         if (strcmp (cmethod->name, "Min") == 0) {
4829                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4830                                         opcode = OP_IMIN;
4831                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4832                                         opcode = OP_IMIN_UN;
4833                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4834                                         opcode = OP_LMIN;
4835                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4836                                         opcode = OP_LMIN_UN;
4837                         } else if (strcmp (cmethod->name, "Max") == 0) {
4838                                 if (fsig->params [0]->type == MONO_TYPE_I4)
4839                                         opcode = OP_IMAX;
4840                                 if (fsig->params [0]->type == MONO_TYPE_U4)
4841                                         opcode = OP_IMAX_UN;
4842                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
4843                                         opcode = OP_LMAX;
4844                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
4845                                         opcode = OP_LMAX_UN;
4846                         }
4847                 }
4848
4849                 if (opcode && fsig->param_count == 2) {
4850                         MONO_INST_NEW (cfg, ins, opcode);
4851                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
4852                         ins->dreg = mono_alloc_dreg (cfg, ins->type);
4853                         ins->sreg1 = args [0]->dreg;
4854                         ins->sreg2 = args [1]->dreg;
4855                         MONO_ADD_INS (cfg->cbb, ins);
4856                 }
4857         }
4858
4859         return ins;
4860 }
4861
4862 static MonoInst*
4863 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4864 {
4865         if (cmethod->klass == mono_defaults.array_class) {
4866                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
4867                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
4868                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
4869                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
4870                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
4871                         return emit_array_unsafe_mov (cfg, fsig, args);
4872         }
4873
4874         return NULL;
4875 }
4876
4877
4878 static gboolean
4879 mono_type_is_native_blittable (MonoType *t)
4880 {
4881         if (MONO_TYPE_IS_REFERENCE (t))
4882                 return FALSE;
4883
4884         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (t))
4885                 return TRUE;
4886
4887         MonoClass *klass = mono_class_from_mono_type (t);
4888
4889         //MonoClass::blitable depends on mono_class_setup_fields being done.
4890         mono_class_setup_fields (klass);
4891         if (!klass->blittable)
4892                 return FALSE;
4893
4894         // If the native marshal size is different we can't convert PtrToStructure to a type load
4895         if (mono_class_native_size (klass, NULL) != mono_class_value_size (klass, NULL))
4896                 return FALSE;
4897
4898         return TRUE;
4899 }
4900
4901
4902 static MonoInst*
4903 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4904 {
4905         MonoInst *ins = NULL;
4906         MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
4907
4908         if (cmethod->klass == mono_defaults.string_class) {
4909                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
4910                         int dreg = alloc_ireg (cfg);
4911                         int index_reg = alloc_preg (cfg);
4912                         int add_reg = alloc_preg (cfg);
4913
4914 #if SIZEOF_REGISTER == 8
4915                         if (COMPILE_LLVM (cfg)) {
4916                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
4917                         } else {
4918                                 /* The array reg is 64 bits but the index reg is only 32 */
4919                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
4920                         }
4921 #else
4922                         index_reg = args [1]->dreg;
4923 #endif
4924                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
4925
4926 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4927                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
4928                         add_reg = ins->dreg;
4929                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4930                                                                    add_reg, 0);
4931 #else
4932                         int mult_reg = alloc_preg (cfg);
4933                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
4934                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
4935                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
4936                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
4937 #endif
4938                         type_from_op (cfg, ins, NULL, NULL);
4939                         return ins;
4940                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
4941                         int dreg = alloc_ireg (cfg);
4942                         /* Decompose later to allow more optimizations */
4943                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
4944                         ins->type = STACK_I4;
4945                         ins->flags |= MONO_INST_FAULT;
4946                         cfg->cbb->has_array_access = TRUE;
4947                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
4948
4949                         return ins;
4950                 } else
4951                         return NULL;
4952         } else if (cmethod->klass == mono_defaults.object_class) {
4953                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
4954                         int dreg = alloc_ireg_ref (cfg);
4955                         int vt_reg = alloc_preg (cfg);
4956                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4957                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
4958                         type_from_op (cfg, ins, NULL, NULL);
4959
4960                         return ins;
4961                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
4962                         int dreg = alloc_ireg (cfg);
4963                         int t1 = alloc_ireg (cfg);
4964
4965                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
4966                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
4967                         ins->type = STACK_I4;
4968
4969                         return ins;
4970                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
4971                         MONO_INST_NEW (cfg, ins, OP_NOP);
4972                         MONO_ADD_INS (cfg->cbb, ins);
4973                         return ins;
4974                 } else
4975                         return NULL;
4976         } else if (cmethod->klass == mono_defaults.array_class) {
4977                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4978                         return emit_array_generic_access (cfg, fsig, args, FALSE);
4979                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
4980                         return emit_array_generic_access (cfg, fsig, args, TRUE);
4981
4982 #ifndef MONO_BIG_ARRAYS
4983                 /*
4984                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4985                  * Array methods.
4986                  */
4987                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
4988                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
4989                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4990                         int dreg = alloc_ireg (cfg);
4991                         int bounds_reg = alloc_ireg_mp (cfg);
4992                         MonoBasicBlock *end_bb, *szarray_bb;
4993                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
4994
4995                         NEW_BBLOCK (cfg, end_bb);
4996                         NEW_BBLOCK (cfg, szarray_bb);
4997
4998                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
4999                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5000                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
5001                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
5002                         /* Non-szarray case */
5003                         if (get_length)
5004                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5005                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5006                         else
5007                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5008                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5009                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
5010                         MONO_START_BB (cfg, szarray_bb);
5011                         /* Szarray case */
5012                         if (get_length)
5013                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5014                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5015                         else
5016                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5017                         MONO_START_BB (cfg, end_bb);
5018
5019                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
5020                         ins->type = STACK_I4;
5021
5022                         return ins;
5023                 }
5024 #endif
5025
5026                 if (cmethod->name [0] != 'g')
5027                         return NULL;
5028
5029                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
5030                         int dreg = alloc_ireg (cfg);
5031                         int vtable_reg = alloc_preg (cfg);
5032                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
5033                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
5034                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
5035                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
5036                         type_from_op (cfg, ins, NULL, NULL);
5037
5038                         return ins;
5039                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5040                         int dreg = alloc_ireg (cfg);
5041
5042                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
5043                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
5044                         type_from_op (cfg, ins, NULL, NULL);
5045
5046                         return ins;
5047                 } else
5048                         return NULL;
5049         } else if (cmethod->klass == runtime_helpers_class) {
5050                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
5051                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
5052                         return ins;
5053                 } else if (strcmp (cmethod->name, "IsReferenceOrContainsReferences") == 0 && fsig->param_count == 0) {
5054                         MonoGenericContext *ctx = mono_method_get_context (cmethod);
5055                         g_assert (ctx);
5056                         g_assert (ctx->method_inst);
5057                         g_assert (ctx->method_inst->type_argc == 1);
5058                         MonoType *t = mini_get_underlying_type (ctx->method_inst->type_argv [0]);
5059                         MonoClass *klass = mono_class_from_mono_type (t);
5060
5061                         ins = NULL;
5062
5063                         mono_class_init (klass);
5064                         if (MONO_TYPE_IS_REFERENCE (t))
5065                                 EMIT_NEW_ICONST (cfg, ins, 1);
5066                         else if (MONO_TYPE_IS_PRIMITIVE (t))
5067                                 EMIT_NEW_ICONST (cfg, ins, 0);
5068                         else if (cfg->gshared && (t->type == MONO_TYPE_VAR || t->type == MONO_TYPE_MVAR) && !mini_type_var_is_vt (t))
5069                                 EMIT_NEW_ICONST (cfg, ins, 1);
5070                         else if (!cfg->gshared || !mini_class_check_context_used (cfg, klass))
5071                                 EMIT_NEW_ICONST (cfg, ins, klass->has_references ? 1 : 0);
5072                         else {
5073                                 g_assert (cfg->gshared);
5074
5075                                 int context_used = mini_class_check_context_used (cfg, klass);
5076
5077                                 /* This returns 1 or 2 */
5078                                 MonoInst *info = mini_emit_get_rgctx_klass (cfg, context_used, klass,   MONO_RGCTX_INFO_CLASS_IS_REF_OR_CONTAINS_REFS);
5079                                 int dreg = alloc_ireg (cfg);
5080                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_ISUB_IMM, dreg, info->dreg, 1);
5081                         }
5082
5083                         return ins;
5084                 } else
5085                         return NULL;
5086         } else if (cmethod->klass == mono_defaults.monitor_class) {
5087                 gboolean is_enter = FALSE;
5088                 gboolean is_v4 = FALSE;
5089
5090                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 2 && fsig->params [1]->byref) {
5091                         is_enter = TRUE;
5092                         is_v4 = TRUE;
5093                 }
5094                 if (!strcmp (cmethod->name, "Enter") && fsig->param_count == 1)
5095                         is_enter = TRUE;
5096
5097                 if (is_enter) {
5098                         /*
5099                          * To make async stack traces work, icalls which can block should have a wrapper.
5100                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
5101                          */
5102                         MonoBasicBlock *end_bb;
5103
5104                         NEW_BBLOCK (cfg, end_bb);
5105
5106                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
5107                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
5108                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
5109                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_internal : (gpointer)mono_monitor_enter_internal, args);
5110                         MONO_START_BB (cfg, end_bb);
5111                         return ins;
5112                 }
5113         } else if (cmethod->klass == mono_defaults.thread_class) {
5114                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
5115                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
5116                         MONO_ADD_INS (cfg->cbb, ins);
5117                         return ins;
5118                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
5119                         return mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5120                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
5121                         guint32 opcode = 0;
5122                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5123
5124                         if (fsig->params [0]->type == MONO_TYPE_I1)
5125                                 opcode = OP_LOADI1_MEMBASE;
5126                         else if (fsig->params [0]->type == MONO_TYPE_U1)
5127                                 opcode = OP_LOADU1_MEMBASE;
5128                         else if (fsig->params [0]->type == MONO_TYPE_I2)
5129                                 opcode = OP_LOADI2_MEMBASE;
5130                         else if (fsig->params [0]->type == MONO_TYPE_U2)
5131                                 opcode = OP_LOADU2_MEMBASE;
5132                         else if (fsig->params [0]->type == MONO_TYPE_I4)
5133                                 opcode = OP_LOADI4_MEMBASE;
5134                         else if (fsig->params [0]->type == MONO_TYPE_U4)
5135                                 opcode = OP_LOADU4_MEMBASE;
5136                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5137                                 opcode = OP_LOADI8_MEMBASE;
5138                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5139                                 opcode = OP_LOADR4_MEMBASE;
5140                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5141                                 opcode = OP_LOADR8_MEMBASE;
5142                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5143                                 opcode = OP_LOAD_MEMBASE;
5144
5145                         if (opcode) {
5146                                 MONO_INST_NEW (cfg, ins, opcode);
5147                                 ins->inst_basereg = args [0]->dreg;
5148                                 ins->inst_offset = 0;
5149                                 MONO_ADD_INS (cfg->cbb, ins);
5150
5151                                 switch (fsig->params [0]->type) {
5152                                 case MONO_TYPE_I1:
5153                                 case MONO_TYPE_U1:
5154                                 case MONO_TYPE_I2:
5155                                 case MONO_TYPE_U2:
5156                                 case MONO_TYPE_I4:
5157                                 case MONO_TYPE_U4:
5158                                         ins->dreg = mono_alloc_ireg (cfg);
5159                                         ins->type = STACK_I4;
5160                                         break;
5161                                 case MONO_TYPE_I8:
5162                                 case MONO_TYPE_U8:
5163                                         ins->dreg = mono_alloc_lreg (cfg);
5164                                         ins->type = STACK_I8;
5165                                         break;
5166                                 case MONO_TYPE_I:
5167                                 case MONO_TYPE_U:
5168                                         ins->dreg = mono_alloc_ireg (cfg);
5169 #if SIZEOF_REGISTER == 8
5170                                         ins->type = STACK_I8;
5171 #else
5172                                         ins->type = STACK_I4;
5173 #endif
5174                                         break;
5175                                 case MONO_TYPE_R4:
5176                                 case MONO_TYPE_R8:
5177                                         ins->dreg = mono_alloc_freg (cfg);
5178                                         ins->type = STACK_R8;
5179                                         break;
5180                                 default:
5181                                         g_assert (mini_type_is_reference (fsig->params [0]));
5182                                         ins->dreg = mono_alloc_ireg_ref (cfg);
5183                                         ins->type = STACK_OBJ;
5184                                         break;
5185                                 }
5186
5187                                 if (opcode == OP_LOADI8_MEMBASE)
5188                                         ins = mono_decompose_opcode (cfg, ins);
5189
5190                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5191
5192                                 return ins;
5193                         }
5194                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
5195                         guint32 opcode = 0;
5196                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5197
5198                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
5199                                 opcode = OP_STOREI1_MEMBASE_REG;
5200                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
5201                                 opcode = OP_STOREI2_MEMBASE_REG;
5202                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
5203                                 opcode = OP_STOREI4_MEMBASE_REG;
5204                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
5205                                 opcode = OP_STOREI8_MEMBASE_REG;
5206                         else if (fsig->params [0]->type == MONO_TYPE_R4)
5207                                 opcode = OP_STORER4_MEMBASE_REG;
5208                         else if (fsig->params [0]->type == MONO_TYPE_R8)
5209                                 opcode = OP_STORER8_MEMBASE_REG;
5210                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
5211                                 opcode = OP_STORE_MEMBASE_REG;
5212
5213                         if (opcode) {
5214                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5215
5216                                 MONO_INST_NEW (cfg, ins, opcode);
5217                                 ins->sreg1 = args [1]->dreg;
5218                                 ins->inst_destbasereg = args [0]->dreg;
5219                                 ins->inst_offset = 0;
5220                                 MONO_ADD_INS (cfg->cbb, ins);
5221
5222                                 if (opcode == OP_STOREI8_MEMBASE_REG)
5223                                         ins = mono_decompose_opcode (cfg, ins);
5224
5225                                 return ins;
5226                         }
5227                 }
5228         } else if (cmethod->klass->image == mono_defaults.corlib &&
5229                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5230                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5231                 ins = NULL;
5232
5233 #if SIZEOF_REGISTER == 8
5234                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
5235                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
5236                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
5237                                 ins->dreg = mono_alloc_preg (cfg);
5238                                 ins->sreg1 = args [0]->dreg;
5239                                 ins->type = STACK_I8;
5240                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
5241                                 MONO_ADD_INS (cfg->cbb, ins);
5242                         } else {
5243                                 MonoInst *load_ins;
5244
5245                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5246
5247                                 /* 64 bit reads are already atomic */
5248                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
5249                                 load_ins->dreg = mono_alloc_preg (cfg);
5250                                 load_ins->inst_basereg = args [0]->dreg;
5251                                 load_ins->inst_offset = 0;
5252                                 load_ins->type = STACK_I8;
5253                                 MONO_ADD_INS (cfg->cbb, load_ins);
5254
5255                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5256
5257                                 ins = load_ins;
5258                         }
5259                 }
5260 #endif
5261
5262                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
5263                         MonoInst *ins_iconst;
5264                         guint32 opcode = 0;
5265
5266                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5267                                 opcode = OP_ATOMIC_ADD_I4;
5268                                 cfg->has_atomic_add_i4 = TRUE;
5269                         }
5270 #if SIZEOF_REGISTER == 8
5271                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5272                                 opcode = OP_ATOMIC_ADD_I8;
5273 #endif
5274                         if (opcode) {
5275                                 if (!mono_arch_opcode_supported (opcode))
5276                                         return NULL;
5277                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5278                                 ins_iconst->inst_c0 = 1;
5279                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5280                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5281
5282                                 MONO_INST_NEW (cfg, ins, opcode);
5283                                 ins->dreg = mono_alloc_ireg (cfg);
5284                                 ins->inst_basereg = args [0]->dreg;
5285                                 ins->inst_offset = 0;
5286                                 ins->sreg2 = ins_iconst->dreg;
5287                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5288                                 MONO_ADD_INS (cfg->cbb, ins);
5289                         }
5290                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
5291                         MonoInst *ins_iconst;
5292                         guint32 opcode = 0;
5293
5294                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5295                                 opcode = OP_ATOMIC_ADD_I4;
5296                                 cfg->has_atomic_add_i4 = TRUE;
5297                         }
5298 #if SIZEOF_REGISTER == 8
5299                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5300                                 opcode = OP_ATOMIC_ADD_I8;
5301 #endif
5302                         if (opcode) {
5303                                 if (!mono_arch_opcode_supported (opcode))
5304                                         return NULL;
5305                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5306                                 ins_iconst->inst_c0 = -1;
5307                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
5308                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
5309
5310                                 MONO_INST_NEW (cfg, ins, opcode);
5311                                 ins->dreg = mono_alloc_ireg (cfg);
5312                                 ins->inst_basereg = args [0]->dreg;
5313                                 ins->inst_offset = 0;
5314                                 ins->sreg2 = ins_iconst->dreg;
5315                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5316                                 MONO_ADD_INS (cfg->cbb, ins);
5317                         }
5318                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
5319                         guint32 opcode = 0;
5320
5321                         if (fsig->params [0]->type == MONO_TYPE_I4) {
5322                                 opcode = OP_ATOMIC_ADD_I4;
5323                                 cfg->has_atomic_add_i4 = TRUE;
5324                         }
5325 #if SIZEOF_REGISTER == 8
5326                         else if (fsig->params [0]->type == MONO_TYPE_I8)
5327                                 opcode = OP_ATOMIC_ADD_I8;
5328 #endif
5329                         if (opcode) {
5330                                 if (!mono_arch_opcode_supported (opcode))
5331                                         return NULL;
5332                                 MONO_INST_NEW (cfg, ins, opcode);
5333                                 ins->dreg = mono_alloc_ireg (cfg);
5334                                 ins->inst_basereg = args [0]->dreg;
5335                                 ins->inst_offset = 0;
5336                                 ins->sreg2 = args [1]->dreg;
5337                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
5338                                 MONO_ADD_INS (cfg->cbb, ins);
5339                         }
5340                 }
5341                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
5342                         MonoInst *f2i = NULL, *i2f;
5343                         guint32 opcode, f2i_opcode, i2f_opcode;
5344                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
5345                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
5346
5347                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
5348                             fsig->params [0]->type == MONO_TYPE_R4) {
5349                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5350                                 f2i_opcode = OP_MOVE_F_TO_I4;
5351                                 i2f_opcode = OP_MOVE_I4_TO_F;
5352                                 cfg->has_atomic_exchange_i4 = TRUE;
5353                         }
5354 #if SIZEOF_REGISTER == 8
5355                         else if (is_ref ||
5356                                  fsig->params [0]->type == MONO_TYPE_I8 ||
5357                                  fsig->params [0]->type == MONO_TYPE_R8 ||
5358                                  fsig->params [0]->type == MONO_TYPE_I) {
5359                                 opcode = OP_ATOMIC_EXCHANGE_I8;
5360                                 f2i_opcode = OP_MOVE_F_TO_I8;
5361                                 i2f_opcode = OP_MOVE_I8_TO_F;
5362                         }
5363 #else
5364                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
5365                                 opcode = OP_ATOMIC_EXCHANGE_I4;
5366                                 cfg->has_atomic_exchange_i4 = TRUE;
5367                         }
5368 #endif
5369                         else
5370                                 return NULL;
5371
5372                         if (!mono_arch_opcode_supported (opcode))
5373                                 return NULL;
5374
5375                         if (is_float) {
5376                                 /* TODO: Decompose these opcodes instead of bailing here. */
5377                                 if (COMPILE_SOFT_FLOAT (cfg))
5378                                         return NULL;
5379
5380                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
5381                                 f2i->dreg = mono_alloc_ireg (cfg);
5382                                 f2i->sreg1 = args [1]->dreg;
5383                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5384                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5385                                 MONO_ADD_INS (cfg->cbb, f2i);
5386                         }
5387
5388                         MONO_INST_NEW (cfg, ins, opcode);
5389                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
5390                         ins->inst_basereg = args [0]->dreg;
5391                         ins->inst_offset = 0;
5392                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
5393                         MONO_ADD_INS (cfg->cbb, ins);
5394
5395                         switch (fsig->params [0]->type) {
5396                         case MONO_TYPE_I4:
5397                                 ins->type = STACK_I4;
5398                                 break;
5399                         case MONO_TYPE_I8:
5400                                 ins->type = STACK_I8;
5401                                 break;
5402                         case MONO_TYPE_I:
5403 #if SIZEOF_REGISTER == 8
5404                                 ins->type = STACK_I8;
5405 #else
5406                                 ins->type = STACK_I4;
5407 #endif
5408                                 break;
5409                         case MONO_TYPE_R4:
5410                         case MONO_TYPE_R8:
5411                                 ins->type = STACK_R8;
5412                                 break;
5413                         default:
5414                                 g_assert (mini_type_is_reference (fsig->params [0]));
5415                                 ins->type = STACK_OBJ;
5416                                 break;
5417                         }
5418
5419                         if (is_float) {
5420                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5421                                 i2f->dreg = mono_alloc_freg (cfg);
5422                                 i2f->sreg1 = ins->dreg;
5423                                 i2f->type = STACK_R8;
5424                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5425                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5426                                 MONO_ADD_INS (cfg->cbb, i2f);
5427
5428                                 ins = i2f;
5429                         }
5430
5431                         if (cfg->gen_write_barriers && is_ref)
5432                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5433                 }
5434                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
5435                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
5436                         guint32 opcode, f2i_opcode, i2f_opcode;
5437                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
5438                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
5439
5440                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
5441                             fsig->params [1]->type == MONO_TYPE_R4) {
5442                                 opcode = OP_ATOMIC_CAS_I4;
5443                                 f2i_opcode = OP_MOVE_F_TO_I4;
5444                                 i2f_opcode = OP_MOVE_I4_TO_F;
5445                                 cfg->has_atomic_cas_i4 = TRUE;
5446                         }
5447 #if SIZEOF_REGISTER == 8
5448                         else if (is_ref ||
5449                                  fsig->params [1]->type == MONO_TYPE_I8 ||
5450                                  fsig->params [1]->type == MONO_TYPE_R8 ||
5451                                  fsig->params [1]->type == MONO_TYPE_I) {
5452                                 opcode = OP_ATOMIC_CAS_I8;
5453                                 f2i_opcode = OP_MOVE_F_TO_I8;
5454                                 i2f_opcode = OP_MOVE_I8_TO_F;
5455                         }
5456 #else
5457                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
5458                                 opcode = OP_ATOMIC_CAS_I4;
5459                                 cfg->has_atomic_cas_i4 = TRUE;
5460                         }
5461 #endif
5462                         else
5463                                 return NULL;
5464
5465                         if (!mono_arch_opcode_supported (opcode))
5466                                 return NULL;
5467
5468                         if (is_float) {
5469                                 /* TODO: Decompose these opcodes instead of bailing here. */
5470                                 if (COMPILE_SOFT_FLOAT (cfg))
5471                                         return NULL;
5472
5473                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
5474                                 f2i_new->dreg = mono_alloc_ireg (cfg);
5475                                 f2i_new->sreg1 = args [1]->dreg;
5476                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5477                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5478                                 MONO_ADD_INS (cfg->cbb, f2i_new);
5479
5480                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
5481                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
5482                                 f2i_cmp->sreg1 = args [2]->dreg;
5483                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
5484                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5485                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
5486                         }
5487
5488                         MONO_INST_NEW (cfg, ins, opcode);
5489                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
5490                         ins->sreg1 = args [0]->dreg;
5491                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
5492                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
5493                         MONO_ADD_INS (cfg->cbb, ins);
5494
5495                         switch (fsig->params [1]->type) {
5496                         case MONO_TYPE_I4:
5497                                 ins->type = STACK_I4;
5498                                 break;
5499                         case MONO_TYPE_I8:
5500                                 ins->type = STACK_I8;
5501                                 break;
5502                         case MONO_TYPE_I:
5503 #if SIZEOF_REGISTER == 8
5504                                 ins->type = STACK_I8;
5505 #else
5506                                 ins->type = STACK_I4;
5507 #endif
5508                                 break;
5509                         case MONO_TYPE_R4:
5510                                 ins->type = cfg->r4_stack_type;
5511                                 break;
5512                         case MONO_TYPE_R8:
5513                                 ins->type = STACK_R8;
5514                                 break;
5515                         default:
5516                                 g_assert (mini_type_is_reference (fsig->params [1]));
5517                                 ins->type = STACK_OBJ;
5518                                 break;
5519                         }
5520
5521                         if (is_float) {
5522                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
5523                                 i2f->dreg = mono_alloc_freg (cfg);
5524                                 i2f->sreg1 = ins->dreg;
5525                                 i2f->type = STACK_R8;
5526                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
5527                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
5528                                 MONO_ADD_INS (cfg->cbb, i2f);
5529
5530                                 ins = i2f;
5531                         }
5532
5533                         if (cfg->gen_write_barriers && is_ref)
5534                                 mini_emit_write_barrier (cfg, args [0], args [1]);
5535                 }
5536                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
5537                          fsig->params [1]->type == MONO_TYPE_I4) {
5538                         MonoInst *cmp, *ceq;
5539
5540                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
5541                                 return NULL;
5542
5543                         /* int32 r = CAS (location, value, comparand); */
5544                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
5545                         ins->dreg = alloc_ireg (cfg);
5546                         ins->sreg1 = args [0]->dreg;
5547                         ins->sreg2 = args [1]->dreg;
5548                         ins->sreg3 = args [2]->dreg;
5549                         ins->type = STACK_I4;
5550                         MONO_ADD_INS (cfg->cbb, ins);
5551
5552                         /* bool result = r == comparand; */
5553                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
5554                         cmp->sreg1 = ins->dreg;
5555                         cmp->sreg2 = args [2]->dreg;
5556                         cmp->type = STACK_I4;
5557                         MONO_ADD_INS (cfg->cbb, cmp);
5558
5559                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
5560                         ceq->dreg = alloc_ireg (cfg);
5561                         ceq->type = STACK_I4;
5562                         MONO_ADD_INS (cfg->cbb, ceq);
5563
5564                         /* *success = result; */
5565                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
5566
5567                         cfg->has_atomic_cas_i4 = TRUE;
5568                 }
5569                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
5570                         ins = mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
5571
5572                 if (ins)
5573                         return ins;
5574         } else if (cmethod->klass->image == mono_defaults.corlib &&
5575                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5576                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
5577                 ins = NULL;
5578
5579                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
5580                         guint32 opcode = 0;
5581                         MonoType *t = fsig->params [0];
5582                         gboolean is_ref;
5583                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
5584
5585                         g_assert (t->byref);
5586                         /* t is a byref type, so the reference check is more complicated */
5587                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5588                         if (t->type == MONO_TYPE_I1)
5589                                 opcode = OP_ATOMIC_LOAD_I1;
5590                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5591                                 opcode = OP_ATOMIC_LOAD_U1;
5592                         else if (t->type == MONO_TYPE_I2)
5593                                 opcode = OP_ATOMIC_LOAD_I2;
5594                         else if (t->type == MONO_TYPE_U2)
5595                                 opcode = OP_ATOMIC_LOAD_U2;
5596                         else if (t->type == MONO_TYPE_I4)
5597                                 opcode = OP_ATOMIC_LOAD_I4;
5598                         else if (t->type == MONO_TYPE_U4)
5599                                 opcode = OP_ATOMIC_LOAD_U4;
5600                         else if (t->type == MONO_TYPE_R4)
5601                                 opcode = OP_ATOMIC_LOAD_R4;
5602                         else if (t->type == MONO_TYPE_R8)
5603                                 opcode = OP_ATOMIC_LOAD_R8;
5604 #if SIZEOF_REGISTER == 8
5605                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5606                                 opcode = OP_ATOMIC_LOAD_I8;
5607                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5608                                 opcode = OP_ATOMIC_LOAD_U8;
5609 #else
5610                         else if (t->type == MONO_TYPE_I)
5611                                 opcode = OP_ATOMIC_LOAD_I4;
5612                         else if (is_ref || t->type == MONO_TYPE_U)
5613                                 opcode = OP_ATOMIC_LOAD_U4;
5614 #endif
5615
5616                         if (opcode) {
5617                                 if (!mono_arch_opcode_supported (opcode))
5618                                         return NULL;
5619
5620                                 MONO_INST_NEW (cfg, ins, opcode);
5621                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
5622                                 ins->sreg1 = args [0]->dreg;
5623                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
5624                                 MONO_ADD_INS (cfg->cbb, ins);
5625
5626                                 switch (t->type) {
5627                                 case MONO_TYPE_BOOLEAN:
5628                                 case MONO_TYPE_I1:
5629                                 case MONO_TYPE_U1:
5630                                 case MONO_TYPE_I2:
5631                                 case MONO_TYPE_U2:
5632                                 case MONO_TYPE_I4:
5633                                 case MONO_TYPE_U4:
5634                                         ins->type = STACK_I4;
5635                                         break;
5636                                 case MONO_TYPE_I8:
5637                                 case MONO_TYPE_U8:
5638                                         ins->type = STACK_I8;
5639                                         break;
5640                                 case MONO_TYPE_I:
5641                                 case MONO_TYPE_U:
5642 #if SIZEOF_REGISTER == 8
5643                                         ins->type = STACK_I8;
5644 #else
5645                                         ins->type = STACK_I4;
5646 #endif
5647                                         break;
5648                                 case MONO_TYPE_R4:
5649                                         ins->type = cfg->r4_stack_type;
5650                                         break;
5651                                 case MONO_TYPE_R8:
5652                                         ins->type = STACK_R8;
5653                                         break;
5654                                 default:
5655                                         g_assert (is_ref);
5656                                         ins->type = STACK_OBJ;
5657                                         break;
5658                                 }
5659                         }
5660                 }
5661
5662                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
5663                         guint32 opcode = 0;
5664                         MonoType *t = fsig->params [0];
5665                         gboolean is_ref;
5666
5667                         g_assert (t->byref);
5668                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
5669                         if (t->type == MONO_TYPE_I1)
5670                                 opcode = OP_ATOMIC_STORE_I1;
5671                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
5672                                 opcode = OP_ATOMIC_STORE_U1;
5673                         else if (t->type == MONO_TYPE_I2)
5674                                 opcode = OP_ATOMIC_STORE_I2;
5675                         else if (t->type == MONO_TYPE_U2)
5676                                 opcode = OP_ATOMIC_STORE_U2;
5677                         else if (t->type == MONO_TYPE_I4)
5678                                 opcode = OP_ATOMIC_STORE_I4;
5679                         else if (t->type == MONO_TYPE_U4)
5680                                 opcode = OP_ATOMIC_STORE_U4;
5681                         else if (t->type == MONO_TYPE_R4)
5682                                 opcode = OP_ATOMIC_STORE_R4;
5683                         else if (t->type == MONO_TYPE_R8)
5684                                 opcode = OP_ATOMIC_STORE_R8;
5685 #if SIZEOF_REGISTER == 8
5686                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
5687                                 opcode = OP_ATOMIC_STORE_I8;
5688                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
5689                                 opcode = OP_ATOMIC_STORE_U8;
5690 #else
5691                         else if (t->type == MONO_TYPE_I)
5692                                 opcode = OP_ATOMIC_STORE_I4;
5693                         else if (is_ref || t->type == MONO_TYPE_U)
5694                                 opcode = OP_ATOMIC_STORE_U4;
5695 #endif
5696
5697                         if (opcode) {
5698                                 if (!mono_arch_opcode_supported (opcode))
5699                                         return NULL;
5700
5701                                 MONO_INST_NEW (cfg, ins, opcode);
5702                                 ins->dreg = args [0]->dreg;
5703                                 ins->sreg1 = args [1]->dreg;
5704                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
5705                                 MONO_ADD_INS (cfg->cbb, ins);
5706
5707                                 if (cfg->gen_write_barriers && is_ref)
5708                                         mini_emit_write_barrier (cfg, args [0], args [1]);
5709                         }
5710                 }
5711
5712                 if (ins)
5713                         return ins;
5714         } else if (cmethod->klass->image == mono_defaults.corlib &&
5715                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
5716                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
5717                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
5718                         if (mini_should_insert_breakpoint (cfg->method)) {
5719                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
5720                         } else {
5721                                 MONO_INST_NEW (cfg, ins, OP_NOP);
5722                                 MONO_ADD_INS (cfg->cbb, ins);
5723                         }
5724                         return ins;
5725                 }
5726         } else if (cmethod->klass->image == mono_defaults.corlib &&
5727                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
5728                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
5729                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
5730 #ifdef TARGET_WIN32
5731                         EMIT_NEW_ICONST (cfg, ins, 1);
5732 #else
5733                         EMIT_NEW_ICONST (cfg, ins, 0);
5734 #endif
5735                 }
5736         } else if (cmethod->klass->image == mono_defaults.corlib &&
5737                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5738                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
5739                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
5740                         /* No stack walks are currently available, so implement this as an intrinsic */
5741                         MonoInst *assembly_ins;
5742
5743                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
5744                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
5745                         return ins;
5746                 }
5747         } else if (cmethod->klass->image == mono_defaults.corlib &&
5748                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
5749                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
5750                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
5751                         /* No stack walks are currently available, so implement this as an intrinsic */
5752                         MonoInst *method_ins;
5753                         MonoMethod *declaring = cfg->method;
5754
5755                         /* This returns the declaring generic method */
5756                         if (declaring->is_inflated)
5757                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
5758                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
5759                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
5760                         cfg->no_inline = TRUE;
5761                         if (cfg->method != cfg->current_method)
5762                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
5763                         return ins;
5764                 }
5765         } else if (cmethod->klass == mono_defaults.math_class) {
5766                 /*
5767                  * There is general branchless code for Min/Max, but it does not work for
5768                  * all inputs:
5769                  * http://everything2.com/?node_id=1051618
5770                  */
5771         } else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
5772                 EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
5773                 MONO_INST_NEW (cfg, ins, OP_PCEQ);
5774                 ins->dreg = alloc_preg (cfg);
5775                 ins->type = STACK_I4;
5776                 MONO_ADD_INS (cfg->cbb, ins);
5777                 return ins;
5778         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
5779                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
5780                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
5781                                 !strcmp (cmethod->klass->name, "Selector")) ||
5782                            ((!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") ||
5783                                  !strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.Mac")) &&
5784                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
5785                                 !strcmp (cmethod->klass->name, "Selector"))
5786                            ) {
5787                 if ((cfg->backend->have_objc_get_selector || cfg->compile_llvm) &&
5788                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
5789                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
5790                     cfg->compile_aot) {
5791                         MonoInst *pi;
5792                         MonoJumpInfoToken *ji;
5793                         char *s;
5794
5795                         if (args [0]->opcode == OP_GOT_ENTRY) {
5796                                 pi = (MonoInst *)args [0]->inst_p1;
5797                                 g_assert (pi->opcode == OP_PATCH_INFO);
5798                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
5799                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
5800                         } else {
5801                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
5802                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
5803                         }
5804
5805                         NULLIFY_INS (args [0]);
5806
5807                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
5808                         return_val_if_nok (&cfg->error, NULL);
5809
5810                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
5811                         ins->dreg = mono_alloc_ireg (cfg);
5812                         // FIXME: Leaks
5813                         ins->inst_p0 = s;
5814                         MONO_ADD_INS (cfg->cbb, ins);
5815                         return ins;
5816                 }
5817         } else if (cmethod->klass->image == mono_defaults.corlib &&
5818                         (strcmp (cmethod->klass->name_space, "System.Runtime.InteropServices") == 0) &&
5819                         (strcmp (cmethod->klass->name, "Marshal") == 0)) {
5820                 //Convert Marshal.PtrToStructure<T> of blittable T to direct loads
5821                 if (strcmp (cmethod->name, "PtrToStructure") == 0 &&
5822                                 cmethod->is_inflated &&
5823                                 fsig->param_count == 1 &&
5824                                 !mini_method_check_context_used (cfg, cmethod)) {
5825
5826                         MonoGenericContext *method_context = mono_method_get_context (cmethod);
5827                         MonoType *arg0 = method_context->method_inst->type_argv [0];
5828                         if (mono_type_is_native_blittable (arg0))
5829                                 return mini_emit_memory_load (cfg, arg0, args [0], 0, 0);
5830                 }
5831         }
5832
5833 #ifdef MONO_ARCH_SIMD_INTRINSICS
5834         if (cfg->opt & MONO_OPT_SIMD) {
5835                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5836                 if (ins)
5837                         return ins;
5838         }
5839 #endif
5840
5841         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5842         if (ins)
5843                 return ins;
5844
5845         if (COMPILE_LLVM (cfg)) {
5846                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
5847                 if (ins)
5848                         return ins;
5849         }
5850
5851         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
5852 }
5853
5854 /*
5855  * This entry point could be used later for arbitrary method
5856  * redirection.
5857  */
5858 inline static MonoInst*
5859 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
5860                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
5861 {
5862         if (method->klass == mono_defaults.string_class) {
5863                 /* managed string allocation support */
5864                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
5865                         MonoInst *iargs [2];
5866                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
5867                         MonoMethod *managed_alloc = NULL;
5868
5869                         g_assert (vtable); /*Should not fail since it System.String*/
5870 #ifndef MONO_CROSS_COMPILE
5871                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
5872 #endif
5873                         if (!managed_alloc)
5874                                 return NULL;
5875                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
5876                         iargs [1] = args [0];
5877                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
5878                 }
5879         }
5880         return NULL;
5881 }
5882
5883 static void
5884 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
5885 {
5886         MonoInst *store, *temp;
5887         int i;
5888
5889         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5890                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
5891
5892                 /*
5893                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
5894                  * would be different than the MonoInst's used to represent arguments, and
5895                  * the ldelema implementation can't deal with that.
5896                  * Solution: When ldelema is used on an inline argument, create a var for
5897                  * it, emit ldelema on that var, and emit the saving code below in
5898                  * inline_method () if needed.
5899                  */
5900                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
5901                 cfg->args [i] = temp;
5902                 /* This uses cfg->args [i] which is set by the preceeding line */
5903                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
5904                 store->cil_code = sp [0]->cil_code;
5905                 sp++;
5906         }
5907 }
5908
5909 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
5910 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
5911
5912 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
5913 static gboolean
5914 check_inline_called_method_name_limit (MonoMethod *called_method)
5915 {
5916         int strncmp_result;
5917         static const char *limit = NULL;
5918
5919         if (limit == NULL) {
5920                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
5921
5922                 if (limit_string != NULL)
5923                         limit = limit_string;
5924                 else
5925                         limit = "";
5926         }
5927
5928         if (limit [0] != '\0') {
5929                 char *called_method_name = mono_method_full_name (called_method, TRUE);
5930
5931                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
5932                 g_free (called_method_name);
5933
5934                 //return (strncmp_result <= 0);
5935                 return (strncmp_result == 0);
5936         } else {
5937                 return TRUE;
5938         }
5939 }
5940 #endif
5941
5942 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
5943 static gboolean
5944 check_inline_caller_method_name_limit (MonoMethod *caller_method)
5945 {
5946         int strncmp_result;
5947         static const char *limit = NULL;
5948
5949         if (limit == NULL) {
5950                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
5951                 if (limit_string != NULL) {
5952                         limit = limit_string;
5953                 } else {
5954                         limit = "";
5955                 }
5956         }
5957
5958         if (limit [0] != '\0') {
5959                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
5960
5961                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
5962                 g_free (caller_method_name);
5963
5964                 //return (strncmp_result <= 0);
5965                 return (strncmp_result == 0);
5966         } else {
5967                 return TRUE;
5968         }
5969 }
5970 #endif
5971
5972 static void
5973 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
5974 {
5975         static double r8_0 = 0.0;
5976         static float r4_0 = 0.0;
5977         MonoInst *ins;
5978         int t;
5979
5980         rtype = mini_get_underlying_type (rtype);
5981         t = rtype->type;
5982
5983         if (rtype->byref) {
5984                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
5985         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
5986                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
5987         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
5988                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
5989         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
5990                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
5991                 ins->type = STACK_R4;
5992                 ins->inst_p0 = (void*)&r4_0;
5993                 ins->dreg = dreg;
5994                 MONO_ADD_INS (cfg->cbb, ins);
5995         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
5996                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
5997                 ins->type = STACK_R8;
5998                 ins->inst_p0 = (void*)&r8_0;
5999                 ins->dreg = dreg;
6000                 MONO_ADD_INS (cfg->cbb, ins);
6001         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6002                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6003                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6004         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6005                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6006         } else {
6007                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6008         }
6009 }
6010
6011 static void
6012 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6013 {
6014         int t;
6015
6016         rtype = mini_get_underlying_type (rtype);
6017         t = rtype->type;
6018
6019         if (rtype->byref) {
6020                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
6021         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6022                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
6023         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6024                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
6025         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
6027         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
6029         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6030                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6032         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
6034         } else {
6035                 emit_init_rvar (cfg, dreg, rtype);
6036         }
6037 }
6038
6039 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
6040 static void
6041 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
6042 {
6043         MonoInst *var = cfg->locals [local];
6044         if (COMPILE_SOFT_FLOAT (cfg)) {
6045                 MonoInst *store;
6046                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
6047                 emit_init_rvar (cfg, reg, type);
6048                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
6049         } else {
6050                 if (init)
6051                         emit_init_rvar (cfg, var->dreg, type);
6052                 else
6053                         emit_dummy_init_rvar (cfg, var->dreg, type);
6054         }
6055 }
6056
6057 int
6058 mini_inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, guchar *ip, guint real_offset, gboolean inline_always)
6059 {
6060         return inline_method (cfg, cmethod, fsig, sp, ip, real_offset, inline_always);
6061 }
6062
6063 /*
6064  * inline_method:
6065  *
6066  * Return the cost of inlining CMETHOD, or zero if it should not be inlined.
6067  */
6068 static int
6069 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
6070                guchar *ip, guint real_offset, gboolean inline_always)
6071 {
6072         MonoError error;
6073         MonoInst *ins, *rvar = NULL;
6074         MonoMethodHeader *cheader;
6075         MonoBasicBlock *ebblock, *sbblock;
6076         int i, costs;
6077         MonoMethod *prev_inlined_method;
6078         MonoInst **prev_locals, **prev_args;
6079         MonoType **prev_arg_types;
6080         guint prev_real_offset;
6081         GHashTable *prev_cbb_hash;
6082         MonoBasicBlock **prev_cil_offset_to_bb;
6083         MonoBasicBlock *prev_cbb;
6084         const unsigned char *prev_ip;
6085         unsigned char *prev_cil_start;
6086         guint32 prev_cil_offset_to_bb_len;
6087         MonoMethod *prev_current_method;
6088         MonoGenericContext *prev_generic_context;
6089         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
6090
6091         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
6092
6093 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6094         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
6095                 return 0;
6096 #endif
6097 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6098         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
6099                 return 0;
6100 #endif
6101
6102         if (!fsig)
6103                 fsig = mono_method_signature (cmethod);
6104
6105         if (cfg->verbose_level > 2)
6106                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6107
6108         if (!cmethod->inline_info) {
6109                 cfg->stat_inlineable_methods++;
6110                 cmethod->inline_info = 1;
6111         }
6112
6113         /* allocate local variables */
6114         cheader = mono_method_get_header_checked (cmethod, &error);
6115         if (!cheader) {
6116                 if (inline_always) {
6117                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
6118                         mono_error_move (&cfg->error, &error);
6119                 } else {
6120                         mono_error_cleanup (&error);
6121                 }
6122                 return 0;
6123         }
6124
6125         /*Must verify before creating locals as it can cause the JIT to assert.*/
6126         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
6127                 mono_metadata_free_mh (cheader);
6128                 return 0;
6129         }
6130
6131         /* allocate space to store the return value */
6132         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
6133                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
6134         }
6135
6136         prev_locals = cfg->locals;
6137         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
6138         for (i = 0; i < cheader->num_locals; ++i)
6139                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
6140
6141         /* allocate start and end blocks */
6142         /* This is needed so if the inline is aborted, we can clean up */
6143         NEW_BBLOCK (cfg, sbblock);
6144         sbblock->real_offset = real_offset;
6145
6146         NEW_BBLOCK (cfg, ebblock);
6147         ebblock->block_num = cfg->num_bblocks++;
6148         ebblock->real_offset = real_offset;
6149
6150         prev_args = cfg->args;
6151         prev_arg_types = cfg->arg_types;
6152         prev_inlined_method = cfg->inlined_method;
6153         cfg->inlined_method = cmethod;
6154         cfg->ret_var_set = FALSE;
6155         cfg->inline_depth ++;
6156         prev_real_offset = cfg->real_offset;
6157         prev_cbb_hash = cfg->cbb_hash;
6158         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
6159         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
6160         prev_cil_start = cfg->cil_start;
6161         prev_ip = cfg->ip;
6162         prev_cbb = cfg->cbb;
6163         prev_current_method = cfg->current_method;
6164         prev_generic_context = cfg->generic_context;
6165         prev_ret_var_set = cfg->ret_var_set;
6166         prev_disable_inline = cfg->disable_inline;
6167
6168         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
6169                 virtual_ = TRUE;
6170
6171         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
6172
6173         ret_var_set = cfg->ret_var_set;
6174
6175         cfg->inlined_method = prev_inlined_method;
6176         cfg->real_offset = prev_real_offset;
6177         cfg->cbb_hash = prev_cbb_hash;
6178         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
6179         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
6180         cfg->cil_start = prev_cil_start;
6181         cfg->ip = prev_ip;
6182         cfg->locals = prev_locals;
6183         cfg->args = prev_args;
6184         cfg->arg_types = prev_arg_types;
6185         cfg->current_method = prev_current_method;
6186         cfg->generic_context = prev_generic_context;
6187         cfg->ret_var_set = prev_ret_var_set;
6188         cfg->disable_inline = prev_disable_inline;
6189         cfg->inline_depth --;
6190
6191         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
6192                 if (cfg->verbose_level > 2)
6193                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
6194
6195                 cfg->stat_inlined_methods++;
6196
6197                 /* always add some code to avoid block split failures */
6198                 MONO_INST_NEW (cfg, ins, OP_NOP);
6199                 MONO_ADD_INS (prev_cbb, ins);
6200
6201                 prev_cbb->next_bb = sbblock;
6202                 link_bblock (cfg, prev_cbb, sbblock);
6203
6204                 /*
6205                  * Get rid of the begin and end bblocks if possible to aid local
6206                  * optimizations.
6207                  */
6208                 if (prev_cbb->out_count == 1)
6209                         mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
6210
6211                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
6212                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
6213
6214                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
6215                         MonoBasicBlock *prev = ebblock->in_bb [0];
6216
6217                         if (prev->next_bb == ebblock) {
6218                                 mono_merge_basic_blocks (cfg, prev, ebblock);
6219                                 cfg->cbb = prev;
6220                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
6221                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
6222                                         cfg->cbb = prev_cbb;
6223                                 }
6224                         } else {
6225                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
6226                                 cfg->cbb = ebblock;
6227                         }
6228                 } else {
6229                         /*
6230                          * Its possible that the rvar is set in some prev bblock, but not in others.
6231                          * (#1835).
6232                          */
6233                         if (rvar) {
6234                                 MonoBasicBlock *bb;
6235
6236                                 for (i = 0; i < ebblock->in_count; ++i) {
6237                                         bb = ebblock->in_bb [i];
6238
6239                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
6240                                                 cfg->cbb = bb;
6241
6242                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6243                                         }
6244                                 }
6245                         }
6246
6247                         cfg->cbb = ebblock;
6248                 }
6249
6250                 if (rvar) {
6251                         /*
6252                          * If the inlined method contains only a throw, then the ret var is not
6253                          * set, so set it to a dummy value.
6254                          */
6255                         if (!ret_var_set)
6256                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
6257
6258                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
6259                         *sp++ = ins;
6260                 }
6261                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6262                 return costs + 1;
6263         } else {
6264                 if (cfg->verbose_level > 2)
6265                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
6266                 cfg->exception_type = MONO_EXCEPTION_NONE;
6267
6268                 /* This gets rid of the newly added bblocks */
6269                 cfg->cbb = prev_cbb;
6270         }
6271         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
6272         return 0;
6273 }
6274
6275 /*
6276  * Some of these comments may well be out-of-date.
6277  * Design decisions: we do a single pass over the IL code (and we do bblock
6278  * splitting/merging in the few cases when it's required: a back jump to an IL
6279  * address that was not already seen as bblock starting point).
6280  * Code is validated as we go (full verification is still better left to metadata/verify.c).
6281  * Complex operations are decomposed in simpler ones right away. We need to let the
6282  * arch-specific code peek and poke inside this process somehow (except when the
6283  * optimizations can take advantage of the full semantic info of coarse opcodes).
6284  * All the opcodes of the form opcode.s are 'normalized' to opcode.
6285  * MonoInst->opcode initially is the IL opcode or some simplification of that
6286  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
6287  * opcode with value bigger than OP_LAST.
6288  * At this point the IR can be handed over to an interpreter, a dumb code generator
6289  * or to the optimizing code generator that will translate it to SSA form.
6290  *
6291  * Profiling directed optimizations.
6292  * We may compile by default with few or no optimizations and instrument the code
6293  * or the user may indicate what methods to optimize the most either in a config file
6294  * or through repeated runs where the compiler applies offline the optimizations to
6295  * each method and then decides if it was worth it.
6296  */
6297
6298 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
6299 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
6300 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
6301 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
6302 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
6303 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
6304 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
6305 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
6306
6307 /* offset from br.s -> br like opcodes */
6308 #define BIG_BRANCH_OFFSET 13
6309
6310 static gboolean
6311 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
6312 {
6313         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
6314
6315         return b == NULL || b == bb;
6316 }
6317
6318 static int
6319 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
6320 {
6321         unsigned char *ip = start;
6322         unsigned char *target;
6323         int i;
6324         guint cli_addr;
6325         MonoBasicBlock *bblock;
6326         const MonoOpcode *opcode;
6327
6328         while (ip < end) {
6329                 cli_addr = ip - start;
6330                 i = mono_opcode_value ((const guint8 **)&ip, end);
6331                 if (i < 0)
6332                         UNVERIFIED;
6333                 opcode = &mono_opcodes [i];
6334                 switch (opcode->argument) {
6335                 case MonoInlineNone:
6336                         ip++;
6337                         break;
6338                 case MonoInlineString:
6339                 case MonoInlineType:
6340                 case MonoInlineField:
6341                 case MonoInlineMethod:
6342                 case MonoInlineTok:
6343                 case MonoInlineSig:
6344                 case MonoShortInlineR:
6345                 case MonoInlineI:
6346                         ip += 5;
6347                         break;
6348                 case MonoInlineVar:
6349                         ip += 3;
6350                         break;
6351                 case MonoShortInlineVar:
6352                 case MonoShortInlineI:
6353                         ip += 2;
6354                         break;
6355                 case MonoShortInlineBrTarget:
6356                         target = start + cli_addr + 2 + (signed char)ip [1];
6357                         GET_BBLOCK (cfg, bblock, target);
6358                         ip += 2;
6359                         if (ip < end)
6360                                 GET_BBLOCK (cfg, bblock, ip);
6361                         break;
6362                 case MonoInlineBrTarget:
6363                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
6364                         GET_BBLOCK (cfg, bblock, target);
6365                         ip += 5;
6366                         if (ip < end)
6367                                 GET_BBLOCK (cfg, bblock, ip);
6368                         break;
6369                 case MonoInlineSwitch: {
6370                         guint32 n = read32 (ip + 1);
6371                         guint32 j;
6372                         ip += 5;
6373                         cli_addr += 5 + 4 * n;
6374                         target = start + cli_addr;
6375                         GET_BBLOCK (cfg, bblock, target);
6376
6377                         for (j = 0; j < n; ++j) {
6378                                 target = start + cli_addr + (gint32)read32 (ip);
6379                                 GET_BBLOCK (cfg, bblock, target);
6380                                 ip += 4;
6381                         }
6382                         break;
6383                 }
6384                 case MonoInlineR:
6385                 case MonoInlineI8:
6386                         ip += 9;
6387                         break;
6388                 default:
6389                         g_assert_not_reached ();
6390                 }
6391
6392                 if (i == CEE_THROW) {
6393                         unsigned char *bb_start = ip - 1;
6394
6395                         /* Find the start of the bblock containing the throw */
6396                         bblock = NULL;
6397                         while ((bb_start >= start) && !bblock) {
6398                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
6399                                 bb_start --;
6400                         }
6401                         if (bblock)
6402                                 bblock->out_of_line = 1;
6403                 }
6404         }
6405         return 0;
6406 unverified:
6407 exception_exit:
6408         *pos = ip;
6409         return 1;
6410 }
6411
6412 static inline MonoMethod *
6413 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
6414 {
6415         MonoMethod *method;
6416
6417         error_init (error);
6418
6419         if (m->wrapper_type != MONO_WRAPPER_NONE) {
6420                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
6421                 if (context) {
6422                         method = mono_class_inflate_generic_method_checked (method, context, error);
6423                 }
6424         } else {
6425                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
6426         }
6427
6428         return method;
6429 }
6430
6431 static inline MonoMethod *
6432 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
6433 {
6434         MonoError error;
6435         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
6436
6437         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
6438                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
6439                 method = NULL;
6440         }
6441
6442         if (!method && !cfg)
6443                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6444
6445         return method;
6446 }
6447
6448 static inline MonoMethodSignature*
6449 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
6450 {
6451         MonoMethodSignature *fsig;
6452
6453         error_init (error);
6454         if (method->wrapper_type != MONO_WRAPPER_NONE) {
6455                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
6456         } else {
6457                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
6458                 return_val_if_nok (error, NULL);
6459         }
6460         if (context) {
6461                 fsig = mono_inflate_generic_signature(fsig, context, error);
6462         }
6463         return fsig;
6464 }
6465
6466 static MonoMethod*
6467 throw_exception (void)
6468 {
6469         static MonoMethod *method = NULL;
6470
6471         if (!method) {
6472                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
6473                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
6474         }
6475         g_assert (method);
6476         return method;
6477 }
6478
6479 static void
6480 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
6481 {
6482         MonoMethod *thrower = throw_exception ();
6483         MonoInst *args [1];
6484
6485         EMIT_NEW_PCONST (cfg, args [0], ex);
6486         mono_emit_method_call (cfg, thrower, args, NULL);
6487 }
6488
6489 /*
6490  * Return the original method is a wrapper is specified. We can only access
6491  * the custom attributes from the original method.
6492  */
6493 static MonoMethod*
6494 get_original_method (MonoMethod *method)
6495 {
6496         if (method->wrapper_type == MONO_WRAPPER_NONE)
6497                 return method;
6498
6499         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
6500         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
6501                 return NULL;
6502
6503         /* in other cases we need to find the original method */
6504         return mono_marshal_method_from_wrapper (method);
6505 }
6506
6507 static void
6508 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
6509 {
6510         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6511         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
6512         if (ex)
6513                 emit_throw_exception (cfg, ex);
6514 }
6515
6516 static void
6517 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
6518 {
6519         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
6520         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
6521         if (ex)
6522                 emit_throw_exception (cfg, ex);
6523 }
6524
6525 /*
6526  * Check that the IL instructions at ip are the array initialization
6527  * sequence and return the pointer to the data and the size.
6528  */
6529 static const char*
6530 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
6531 {
6532         /*
6533          * newarr[System.Int32]
6534          * dup
6535          * ldtoken field valuetype ...
6536          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
6537          */
6538         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
6539                 MonoError error;
6540                 guint32 token = read32 (ip + 7);
6541                 guint32 field_token = read32 (ip + 2);
6542                 guint32 field_index = field_token & 0xffffff;
6543                 guint32 rva;
6544                 const char *data_ptr;
6545                 int size = 0;
6546                 MonoMethod *cmethod;
6547                 MonoClass *dummy_class;
6548                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
6549                 int dummy_align;
6550
6551                 if (!field) {
6552                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6553                         return NULL;
6554                 }
6555
6556                 *out_field_token = field_token;
6557
6558                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
6559                 if (!cmethod)
6560                         return NULL;
6561                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
6562                         return NULL;
6563                 switch (mini_get_underlying_type (&klass->byval_arg)->type) {
6564                 case MONO_TYPE_I1:
6565                 case MONO_TYPE_U1:
6566                         size = 1; break;
6567                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
6568 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
6569                 case MONO_TYPE_I2:
6570                 case MONO_TYPE_U2:
6571                         size = 2; break;
6572                 case MONO_TYPE_I4:
6573                 case MONO_TYPE_U4:
6574                 case MONO_TYPE_R4:
6575                         size = 4; break;
6576                 case MONO_TYPE_R8:
6577                 case MONO_TYPE_I8:
6578                 case MONO_TYPE_U8:
6579                         size = 8; break;
6580 #endif
6581                 default:
6582                         return NULL;
6583                 }
6584                 size *= len;
6585                 if (size > mono_type_size (field->type, &dummy_align))
6586                     return NULL;
6587                 *out_size = size;
6588                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
6589                 if (!image_is_dynamic (method->klass->image)) {
6590                         field_index = read32 (ip + 2) & 0xffffff;
6591                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
6592                         data_ptr = mono_image_rva_map (method->klass->image, rva);
6593                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
6594                         /* for aot code we do the lookup on load */
6595                         if (aot && data_ptr)
6596                                 return (const char *)GUINT_TO_POINTER (rva);
6597                 } else {
6598                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
6599                         g_assert (!aot);
6600                         data_ptr = mono_field_get_data (field);
6601                 }
6602                 return data_ptr;
6603         }
6604         return NULL;
6605 }
6606
6607 static void
6608 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
6609 {
6610         MonoError error;
6611         char *method_fname = mono_method_full_name (method, TRUE);
6612         char *method_code;
6613         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
6614
6615         if (!header) {
6616                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
6617                 mono_error_cleanup (&error);
6618         } else if (header->code_size == 0)
6619                 method_code = g_strdup ("method body is empty.");
6620         else
6621                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
6622         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
6623         g_free (method_fname);
6624         g_free (method_code);
6625         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
6626 }
6627
6628 static void
6629 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
6630 {
6631         MonoInst *ins;
6632         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
6633         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
6634                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
6635                 /* Optimize reg-reg moves away */
6636                 /*
6637                  * Can't optimize other opcodes, since sp[0] might point to
6638                  * the last ins of a decomposed opcode.
6639                  */
6640                 sp [0]->dreg = (cfg)->locals [n]->dreg;
6641         } else {
6642                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
6643         }
6644 }
6645
6646 /*
6647  * ldloca inhibits many optimizations so try to get rid of it in common
6648  * cases.
6649  */
6650 static inline unsigned char *
6651 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
6652 {
6653         int local, token;
6654         MonoClass *klass;
6655         MonoType *type;
6656
6657         if (size == 1) {
6658                 local = ip [1];
6659                 ip += 2;
6660         } else {
6661                 local = read16 (ip + 2);
6662                 ip += 4;
6663         }
6664
6665         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
6666                 /* From the INITOBJ case */
6667                 token = read32 (ip + 2);
6668                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
6669                 CHECK_TYPELOAD (klass);
6670                 type = mini_get_underlying_type (&klass->byval_arg);
6671                 emit_init_local (cfg, local, type, TRUE);
6672                 return ip + 6;
6673         }
6674  exception_exit:
6675         return NULL;
6676 }
6677
6678 static MonoInst*
6679 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
6680 {
6681         MonoInst *icall_args [16];
6682         MonoInst *call_target, *ins, *vtable_ins;
6683         int arg_reg, this_reg, vtable_reg;
6684         gboolean is_iface = mono_class_is_interface (cmethod->klass);
6685         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
6686         gboolean variant_iface = FALSE;
6687         guint32 slot;
6688         int offset;
6689         gboolean special_array_interface = cmethod->klass->is_array_special_interface;
6690
6691         /*
6692          * In llvm-only mode, vtables contain function descriptors instead of
6693          * method addresses/trampolines.
6694          */
6695         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
6696
6697         if (is_iface)
6698                 slot = mono_method_get_imt_slot (cmethod);
6699         else
6700                 slot = mono_method_get_vtable_index (cmethod);
6701
6702         this_reg = sp [0]->dreg;
6703
6704         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
6705                 variant_iface = TRUE;
6706
6707         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
6708                 /*
6709                  * The simplest case, a normal virtual call.
6710                  */
6711                 int slot_reg = alloc_preg (cfg);
6712                 int addr_reg = alloc_preg (cfg);
6713                 int arg_reg = alloc_preg (cfg);
6714                 MonoBasicBlock *non_null_bb;
6715
6716                 vtable_reg = alloc_preg (cfg);
6717                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6718                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6719
6720                 /* Load the vtable slot, which contains a function descriptor. */
6721                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6722
6723                 NEW_BBLOCK (cfg, non_null_bb);
6724
6725                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6726                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
6727                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
6728
6729                 /* Slow path */
6730                 // FIXME: Make the wrapper use the preserveall cconv
6731                 // FIXME: Use one icall per slot for small slot numbers ?
6732                 icall_args [0] = vtable_ins;
6733                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6734                 /* Make the icall return the vtable slot value to save some code space */
6735                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
6736                 ins->dreg = slot_reg;
6737                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
6738
6739                 /* Fastpath */
6740                 MONO_START_BB (cfg, non_null_bb);
6741                 /* Load the address + arg from the vtable slot */
6742                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6743                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
6744
6745                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6746         }
6747
6748         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt && !special_array_interface) {
6749                 /*
6750                  * A simple interface call
6751                  *
6752                  * We make a call through an imt slot to obtain the function descriptor we need to call.
6753                  * The imt slot contains a function descriptor for a runtime function + arg.
6754                  */
6755                 int slot_reg = alloc_preg (cfg);
6756                 int addr_reg = alloc_preg (cfg);
6757                 int arg_reg = alloc_preg (cfg);
6758                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6759
6760                 vtable_reg = alloc_preg (cfg);
6761                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6762                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6763
6764                 /*
6765                  * The slot is already initialized when the vtable is created so there is no need
6766                  * to check it here.
6767                  */
6768
6769                 /* Load the imt slot, which contains a function descriptor. */
6770                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6771
6772                 /* Load the address + arg of the imt thunk from the imt slot */
6773                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6774                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6775                 /*
6776                  * IMT thunks in llvm-only mode are C functions which take an info argument
6777                  * plus the imt method and return the ftndesc to call.
6778                  */
6779                 icall_args [0] = thunk_arg_ins;
6780                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6781                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6782                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6783
6784                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6785         }
6786
6787         if ((fsig->generic_param_count || variant_iface || special_array_interface) && !is_gsharedvt) {
6788                 /*
6789                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
6790                  * dynamically extended as more instantiations are discovered.
6791                  * This handles generic virtual methods both on classes and interfaces.
6792                  */
6793                 int slot_reg = alloc_preg (cfg);
6794                 int addr_reg = alloc_preg (cfg);
6795                 int arg_reg = alloc_preg (cfg);
6796                 int ftndesc_reg = alloc_preg (cfg);
6797                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
6798                 MonoBasicBlock *slowpath_bb, *end_bb;
6799
6800                 NEW_BBLOCK (cfg, slowpath_bb);
6801                 NEW_BBLOCK (cfg, end_bb);
6802
6803                 vtable_reg = alloc_preg (cfg);
6804                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6805                 if (is_iface)
6806                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
6807                 else
6808                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
6809
6810                 /* Load the slot, which contains a function descriptor. */
6811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
6812
6813                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
6814                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
6815                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
6816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6817
6818                 /* Fastpath */
6819                 /* Same as with iface calls */
6820                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
6821                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
6822                 icall_args [0] = thunk_arg_ins;
6823                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
6824                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6825                 ftndesc_ins = mini_emit_calli (cfg, helper_sig_llvmonly_imt_trampoline, icall_args, thunk_addr_ins, NULL, NULL);
6826                 ftndesc_ins->dreg = ftndesc_reg;
6827                 /*
6828                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
6829                  * they don't know about yet. Fall back to the slowpath in that case.
6830                  */
6831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
6832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
6833
6834                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6835
6836                 /* Slowpath */
6837                 MONO_START_BB (cfg, slowpath_bb);
6838                 icall_args [0] = vtable_ins;
6839                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6840                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6841                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
6842                 if (is_iface)
6843                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
6844                 else
6845                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
6846                 ftndesc_ins->dreg = ftndesc_reg;
6847                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6848
6849                 /* Common case */
6850                 MONO_START_BB (cfg, end_bb);
6851                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
6852         }
6853
6854         /*
6855          * Non-optimized cases
6856          */
6857         icall_args [0] = sp [0];
6858         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
6859
6860         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
6861                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
6862
6863         arg_reg = alloc_preg (cfg);
6864         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
6865         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
6866
6867         g_assert (is_gsharedvt);
6868         if (is_iface)
6869                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
6870         else
6871                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
6872
6873         /*
6874          * Pass the extra argument even if the callee doesn't receive it, most
6875          * calling conventions allow this.
6876          */
6877         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
6878 }
6879
6880 static gboolean
6881 is_exception_class (MonoClass *klass)
6882 {
6883         while (klass) {
6884                 if (klass == mono_defaults.exception_class)
6885                         return TRUE;
6886                 klass = klass->parent;
6887         }
6888         return FALSE;
6889 }
6890
6891 /*
6892  * is_jit_optimizer_disabled:
6893  *
6894  *   Determine whenever M's assembly has a DebuggableAttribute with the
6895  * IsJITOptimizerDisabled flag set.
6896  */
6897 static gboolean
6898 is_jit_optimizer_disabled (MonoMethod *m)
6899 {
6900         MonoError error;
6901         MonoAssembly *ass = m->klass->image->assembly;
6902         MonoCustomAttrInfo* attrs;
6903         MonoClass *klass;
6904         int i;
6905         gboolean val = FALSE;
6906
6907         g_assert (ass);
6908         if (ass->jit_optimizer_disabled_inited)
6909                 return ass->jit_optimizer_disabled;
6910
6911         klass = mono_class_try_get_debuggable_attribute_class ();
6912
6913         if (!klass) {
6914                 /* Linked away */
6915                 ass->jit_optimizer_disabled = FALSE;
6916                 mono_memory_barrier ();
6917                 ass->jit_optimizer_disabled_inited = TRUE;
6918                 return FALSE;
6919         }
6920
6921         attrs = mono_custom_attrs_from_assembly_checked (ass, FALSE, &error);
6922         mono_error_cleanup (&error); /* FIXME don't swallow the error */
6923         if (attrs) {
6924                 for (i = 0; i < attrs->num_attrs; ++i) {
6925                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
6926                         const gchar *p;
6927                         MonoMethodSignature *sig;
6928
6929                         if (!attr->ctor || attr->ctor->klass != klass)
6930                                 continue;
6931                         /* Decode the attribute. See reflection.c */
6932                         p = (const char*)attr->data;
6933                         g_assert (read16 (p) == 0x0001);
6934                         p += 2;
6935
6936                         // FIXME: Support named parameters
6937                         sig = mono_method_signature (attr->ctor);
6938                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
6939                                 continue;
6940                         /* Two boolean arguments */
6941                         p ++;
6942                         val = *p;
6943                 }
6944                 mono_custom_attrs_free (attrs);
6945         }
6946
6947         ass->jit_optimizer_disabled = val;
6948         mono_memory_barrier ();
6949         ass->jit_optimizer_disabled_inited = TRUE;
6950
6951         return val;
6952 }
6953
6954 static gboolean
6955 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
6956 {
6957         gboolean supported_tail_call;
6958         int i;
6959
6960         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
6961
6962         for (i = 0; i < fsig->param_count; ++i) {
6963                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
6964                         /* These can point to the current method's stack */
6965                         supported_tail_call = FALSE;
6966         }
6967         if (fsig->hasthis && cmethod->klass->valuetype)
6968                 /* this might point to the current method's stack */
6969                 supported_tail_call = FALSE;
6970         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
6971                 supported_tail_call = FALSE;
6972         if (cfg->method->save_lmf)
6973                 supported_tail_call = FALSE;
6974         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
6975                 supported_tail_call = FALSE;
6976         if (call_opcode != CEE_CALL)
6977                 supported_tail_call = FALSE;
6978
6979         /* Debugging support */
6980 #if 0
6981         if (supported_tail_call) {
6982                 if (!mono_debug_count ())
6983                         supported_tail_call = FALSE;
6984         }
6985 #endif
6986
6987         return supported_tail_call;
6988 }
6989
6990 /*
6991  * handle_ctor_call:
6992  *
6993  *   Handle calls made to ctors from NEWOBJ opcodes.
6994  */
6995 static void
6996 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
6997                                   MonoInst **sp, guint8 *ip, int *inline_costs)
6998 {
6999         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
7000
7001         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
7002                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
7003                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
7004                         mono_class_vtable (cfg->domain, cmethod->klass);
7005                         CHECK_TYPELOAD (cmethod->klass);
7006
7007                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
7008                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
7009                 } else {
7010                         if (context_used) {
7011                                 vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used,
7012                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
7013                         } else {
7014                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
7015
7016                                 CHECK_TYPELOAD (cmethod->klass);
7017                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
7018                         }
7019                 }
7020         }
7021
7022         /* Avoid virtual calls to ctors if possible */
7023         if (mono_class_is_marshalbyref (cmethod->klass))
7024                 callvirt_this_arg = sp [0];
7025
7026         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7027                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
7028                 CHECK_CFG_EXCEPTION;
7029         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
7030                            mono_method_check_inlining (cfg, cmethod) &&
7031                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
7032                 int costs;
7033
7034                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
7035                         cfg->real_offset += 5;
7036
7037                         *inline_costs += costs - 5;
7038                 } else {
7039                         INLINE_FAILURE ("inline failure");
7040                         // FIXME-VT: Clean this up
7041                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
7042                                 GSHAREDVT_FAILURE(*ip);
7043                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
7044                 }
7045         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
7046                 MonoInst *addr;
7047
7048                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
7049
7050                 if (cfg->llvm_only) {
7051                         // FIXME: Avoid initializing vtable_arg
7052                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7053                 } else {
7054                         mini_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
7055                 }
7056         } else if (context_used &&
7057                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
7058                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
7059                 MonoInst *cmethod_addr;
7060
7061                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
7062
7063                 if (cfg->llvm_only) {
7064                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
7065                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7066                         emit_llvmonly_calli (cfg, fsig, sp, addr);
7067                 } else {
7068                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
7069                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
7070
7071                         mini_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
7072                 }
7073         } else {
7074                 INLINE_FAILURE ("ctor call");
7075                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
7076                                                                                   callvirt_this_arg, NULL, vtable_arg);
7077         }
7078  exception_exit:
7079         return;
7080 }
7081
7082 static void
7083 emit_setret (MonoCompile *cfg, MonoInst *val)
7084 {
7085         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
7086         MonoInst *ins;
7087
7088         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
7089                 MonoInst *ret_addr;
7090
7091                 if (!cfg->vret_addr) {
7092                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
7093                 } else {
7094                         EMIT_NEW_RETLOADA (cfg, ret_addr);
7095
7096                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
7097                         ins->klass = mono_class_from_mono_type (ret_type);
7098                 }
7099         } else {
7100 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
7101                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
7102                         MonoInst *iargs [1];
7103                         MonoInst *conv;
7104
7105                         iargs [0] = val;
7106                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
7107                         mono_arch_emit_setret (cfg, cfg->method, conv);
7108                 } else {
7109                         mono_arch_emit_setret (cfg, cfg->method, val);
7110                 }
7111 #else
7112                 mono_arch_emit_setret (cfg, cfg->method, val);
7113 #endif
7114         }
7115 }
7116
7117 /*
7118  * mono_method_to_ir:
7119  *
7120  * Translate the .net IL into linear IR.
7121  *
7122  * @start_bblock: if not NULL, the starting basic block, used during inlining.
7123  * @end_bblock: if not NULL, the ending basic block, used during inlining.
7124  * @return_var: if not NULL, the place where the return value is stored, used during inlining.
7125  * @inline_args: if not NULL, contains the arguments to the inline call
7126  * @inline_offset: if not zero, the real offset from the inline call, or zero otherwise.
7127  * @is_virtual_call: whether this method is being called as a result of a call to callvirt
7128  *
7129  * This method is used to turn ECMA IL into Mono's internal Linear IR
7130  * reprensetation.  It is used both for entire methods, as well as
7131  * inlining existing methods.  In the former case, the @start_bblock,
7132  * @end_bblock, @return_var, @inline_args are all set to NULL, and the
7133  * inline_offset is set to zero.
7134  *
7135  * Returns: the inline cost, or -1 if there was an error processing this method.
7136  */
7137 int
7138 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
7139                    MonoInst *return_var, MonoInst **inline_args,
7140                    guint inline_offset, gboolean is_virtual_call)
7141 {
7142         MonoError error;
7143         MonoInst *ins, **sp, **stack_start;
7144         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
7145         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
7146         MonoMethod *cmethod, *method_definition;
7147         MonoInst **arg_array;
7148         MonoMethodHeader *header;
7149         MonoImage *image;
7150         guint32 token, ins_flag;
7151         MonoClass *klass;
7152         MonoClass *constrained_class = NULL;
7153         unsigned char *ip, *end, *target, *err_pos;
7154         MonoMethodSignature *sig;
7155         MonoGenericContext *generic_context = NULL;
7156         MonoGenericContainer *generic_container = NULL;
7157         MonoType **param_types;
7158         int i, n, start_new_bblock, dreg;
7159         int num_calls = 0, inline_costs = 0;
7160         int breakpoint_id = 0;
7161         guint num_args;
7162         GSList *class_inits = NULL;
7163         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
7164         int context_used;
7165         gboolean init_locals, seq_points, skip_dead_blocks;
7166         gboolean sym_seq_points = FALSE;
7167         MonoDebugMethodInfo *minfo;
7168         MonoBitSet *seq_point_locs = NULL;
7169         MonoBitSet *seq_point_set_locs = NULL;
7170
7171         cfg->disable_inline = is_jit_optimizer_disabled (method);
7172
7173         /* serialization and xdomain stuff may need access to private fields and methods */
7174         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
7175         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
7176         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
7177         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
7178         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
7179         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
7180
7181         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
7182         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
7183         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
7184         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
7185         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
7186
7187         image = method->klass->image;
7188         header = mono_method_get_header_checked (method, &cfg->error);
7189         if (!header) {
7190                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7191                 goto exception_exit;
7192         } else {
7193                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7194         }
7195
7196         generic_container = mono_method_get_generic_container (method);
7197         sig = mono_method_signature (method);
7198         num_args = sig->hasthis + sig->param_count;
7199         ip = (unsigned char*)header->code;
7200         cfg->cil_start = ip;
7201         end = ip + header->code_size;
7202         cfg->stat_cil_code_size += header->code_size;
7203
7204         seq_points = cfg->gen_seq_points && cfg->method == method;
7205
7206         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
7207                 /* We could hit a seq point before attaching to the JIT (#8338) */
7208                 seq_points = FALSE;
7209         }
7210
7211         if (cfg->gen_sdb_seq_points && cfg->method == method) {
7212                 minfo = mono_debug_lookup_method (method);
7213                 if (minfo) {
7214                         MonoSymSeqPoint *sps;
7215                         int i, n_il_offsets;
7216
7217                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
7218                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7219                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7220                         sym_seq_points = TRUE;
7221                         for (i = 0; i < n_il_offsets; ++i) {
7222                                 if (sps [i].il_offset < header->code_size)
7223                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
7224                         }
7225                         g_free (sps);
7226
7227                         MonoDebugMethodAsyncInfo* asyncMethod = mono_debug_lookup_method_async_debug_info (method);
7228                         if (asyncMethod) {
7229                                 for (i = 0; asyncMethod != NULL && i < asyncMethod->num_awaits; i++)
7230                                 {
7231                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->resume_offsets[i]);
7232                                         mono_bitset_set_fast (seq_point_locs, asyncMethod->yield_offsets[i]);
7233                                 }
7234                                 mono_debug_free_method_async_debug_info (asyncMethod);
7235                         }
7236                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
7237                         /* Methods without line number info like auto-generated property accessors */
7238                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7239                         seq_point_set_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
7240                         sym_seq_points = TRUE;
7241                 }
7242         }
7243
7244         /*
7245          * Methods without init_locals set could cause asserts in various passes
7246          * (#497220). To work around this, we emit dummy initialization opcodes
7247          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
7248          * on some platforms.
7249          */
7250         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
7251                 init_locals = header->init_locals;
7252         else
7253                 init_locals = TRUE;
7254
7255         method_definition = method;
7256         while (method_definition->is_inflated) {
7257                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
7258                 method_definition = imethod->declaring;
7259         }
7260
7261         /* SkipVerification is not allowed if core-clr is enabled */
7262         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
7263                 dont_verify = TRUE;
7264                 dont_verify_stloc = TRUE;
7265         }
7266
7267         if (sig->is_inflated)
7268                 generic_context = mono_method_get_context (method);
7269         else if (generic_container)
7270                 generic_context = &generic_container->context;
7271         cfg->generic_context = generic_context;
7272
7273         if (!cfg->gshared)
7274                 g_assert (!sig->has_type_parameters);
7275
7276         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
7277                 g_assert (method->is_inflated);
7278                 g_assert (mono_method_get_context (method)->method_inst);
7279         }
7280         if (method->is_inflated && mono_method_get_context (method)->method_inst)
7281                 g_assert (sig->generic_param_count);
7282
7283         if (cfg->method == method) {
7284                 cfg->real_offset = 0;
7285         } else {
7286                 cfg->real_offset = inline_offset;
7287         }
7288
7289         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
7290         cfg->cil_offset_to_bb_len = header->code_size;
7291
7292         cfg->current_method = method;
7293
7294         if (cfg->verbose_level > 2)
7295                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
7296
7297         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
7298         if (sig->hasthis)
7299                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
7300         for (n = 0; n < sig->param_count; ++n)
7301                 param_types [n + sig->hasthis] = sig->params [n];
7302         cfg->arg_types = param_types;
7303
7304         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
7305         if (cfg->method == method) {
7306
7307                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
7308                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
7309
7310                 /* ENTRY BLOCK */
7311                 NEW_BBLOCK (cfg, start_bblock);
7312                 cfg->bb_entry = start_bblock;
7313                 start_bblock->cil_code = NULL;
7314                 start_bblock->cil_length = 0;
7315
7316                 /* EXIT BLOCK */
7317                 NEW_BBLOCK (cfg, end_bblock);
7318                 cfg->bb_exit = end_bblock;
7319                 end_bblock->cil_code = NULL;
7320                 end_bblock->cil_length = 0;
7321                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
7322                 g_assert (cfg->num_bblocks == 2);
7323
7324                 arg_array = cfg->args;
7325
7326                 if (header->num_clauses) {
7327                         cfg->spvars = g_hash_table_new (NULL, NULL);
7328                         cfg->exvars = g_hash_table_new (NULL, NULL);
7329                 }
7330                 /* handle exception clauses */
7331                 for (i = 0; i < header->num_clauses; ++i) {
7332                         MonoBasicBlock *try_bb;
7333                         MonoExceptionClause *clause = &header->clauses [i];
7334                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
7335
7336                         try_bb->real_offset = clause->try_offset;
7337                         try_bb->try_start = TRUE;
7338                         try_bb->region = ((i + 1) << 8) | clause->flags;
7339                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
7340                         tblock->real_offset = clause->handler_offset;
7341                         tblock->flags |= BB_EXCEPTION_HANDLER;
7342
7343                         /*
7344                          * Linking the try block with the EH block hinders inlining as we won't be able to
7345                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
7346                          */
7347                         if (COMPILE_LLVM (cfg))
7348                                 link_bblock (cfg, try_bb, tblock);
7349
7350                         if (*(ip + clause->handler_offset) == CEE_POP)
7351                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
7352
7353                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
7354                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
7355                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
7356                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7357                                 MONO_ADD_INS (tblock, ins);
7358
7359                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
7360                                         /* finally clauses already have a seq point */
7361                                         /* seq points for filter clauses are emitted below */
7362                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7363                                         MONO_ADD_INS (tblock, ins);
7364                                 }
7365
7366                                 /* todo: is a fault block unsafe to optimize? */
7367                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
7368                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
7369                         }
7370
7371                         /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
7372                           while (p < end) {
7373                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
7374                           }*/
7375                         /* catch and filter blocks get the exception object on the stack */
7376                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
7377                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7378
7379                                 /* mostly like handle_stack_args (), but just sets the input args */
7380                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
7381                                 tblock->in_scount = 1;
7382                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7383                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7384
7385                                 cfg->cbb = tblock;
7386
7387 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
7388                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
7389                                 if (!cfg->compile_llvm) {
7390                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
7391                                         ins->dreg = tblock->in_stack [0]->dreg;
7392                                         MONO_ADD_INS (tblock, ins);
7393                                 }
7394 #else
7395                                 MonoInst *dummy_use;
7396
7397                                 /*
7398                                  * Add a dummy use for the exvar so its liveness info will be
7399                                  * correct.
7400                                  */
7401                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
7402 #endif
7403
7404                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7405                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
7406                                         MONO_ADD_INS (tblock, ins);
7407                                 }
7408
7409                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
7410                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
7411                                         tblock->flags |= BB_EXCEPTION_HANDLER;
7412                                         tblock->real_offset = clause->data.filter_offset;
7413                                         tblock->in_scount = 1;
7414                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
7415                                         /* The filter block shares the exvar with the handler block */
7416                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
7417                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
7418                                         MONO_ADD_INS (tblock, ins);
7419                                 }
7420                         }
7421
7422                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
7423                                         clause->data.catch_class &&
7424                                         cfg->gshared &&
7425                                         mono_class_check_context_used (clause->data.catch_class)) {
7426                                 /*
7427                                  * In shared generic code with catch
7428                                  * clauses containing type variables
7429                                  * the exception handling code has to
7430                                  * be able to get to the rgctx.
7431                                  * Therefore we have to make sure that
7432                                  * the vtable/mrgctx argument (for
7433                                  * static or generic methods) or the
7434                                  * "this" argument (for non-static
7435                                  * methods) are live.
7436                                  */
7437                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7438                                                 mini_method_get_context (method)->method_inst ||
7439                                                 method->klass->valuetype) {
7440                                         mono_get_vtable_var (cfg);
7441                                 } else {
7442                                         MonoInst *dummy_use;
7443
7444                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
7445                                 }
7446                         }
7447                 }
7448         } else {
7449                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
7450                 cfg->cbb = start_bblock;
7451                 cfg->args = arg_array;
7452                 mono_save_args (cfg, sig, inline_args);
7453         }
7454
7455         /* FIRST CODE BLOCK */
7456         NEW_BBLOCK (cfg, tblock);
7457         tblock->cil_code = ip;
7458         cfg->cbb = tblock;
7459         cfg->ip = ip;
7460
7461         ADD_BBLOCK (cfg, tblock);
7462
7463         if (cfg->method == method) {
7464                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
7465                 if (breakpoint_id) {
7466                         MONO_INST_NEW (cfg, ins, OP_BREAK);
7467                         MONO_ADD_INS (cfg->cbb, ins);
7468                 }
7469         }
7470
7471         /* we use a separate basic block for the initialization code */
7472         NEW_BBLOCK (cfg, init_localsbb);
7473         if (cfg->method == method)
7474                 cfg->bb_init = init_localsbb;
7475         init_localsbb->real_offset = cfg->real_offset;
7476         start_bblock->next_bb = init_localsbb;
7477         init_localsbb->next_bb = cfg->cbb;
7478         link_bblock (cfg, start_bblock, init_localsbb);
7479         link_bblock (cfg, init_localsbb, cfg->cbb);
7480
7481         cfg->cbb = init_localsbb;
7482
7483         if (cfg->gsharedvt && cfg->method == method) {
7484                 MonoGSharedVtMethodInfo *info;
7485                 MonoInst *var, *locals_var;
7486                 int dreg;
7487
7488                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
7489                 info->method = cfg->method;
7490                 info->count_entries = 16;
7491                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
7492                 cfg->gsharedvt_info = info;
7493
7494                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7495                 /* prevent it from being register allocated */
7496                 //var->flags |= MONO_INST_VOLATILE;
7497                 cfg->gsharedvt_info_var = var;
7498
7499                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
7500                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
7501
7502                 /* Allocate locals */
7503                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
7504                 /* prevent it from being register allocated */
7505                 //locals_var->flags |= MONO_INST_VOLATILE;
7506                 cfg->gsharedvt_locals_var = locals_var;
7507
7508                 dreg = alloc_ireg (cfg);
7509                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
7510
7511                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
7512                 ins->dreg = locals_var->dreg;
7513                 ins->sreg1 = dreg;
7514                 MONO_ADD_INS (cfg->cbb, ins);
7515                 cfg->gsharedvt_locals_var_ins = ins;
7516
7517                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
7518                 /*
7519                 if (init_locals)
7520                         ins->flags |= MONO_INST_INIT;
7521                 */
7522         }
7523
7524         if (mono_security_core_clr_enabled ()) {
7525                 /* check if this is native code, e.g. an icall or a p/invoke */
7526                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
7527                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
7528                         if (wrapped) {
7529                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
7530                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
7531
7532                                 /* if this ia a native call then it can only be JITted from platform code */
7533                                 if ((icall || pinvk) && method->klass && method->klass->image) {
7534                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
7535                                                 MonoException *ex = icall ? mono_get_exception_security () :
7536                                                         mono_get_exception_method_access ();
7537                                                 emit_throw_exception (cfg, ex);
7538                                         }
7539                                 }
7540                         }
7541                 }
7542         }
7543
7544         CHECK_CFG_EXCEPTION;
7545
7546         if (header->code_size == 0)
7547                 UNVERIFIED;
7548
7549         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
7550                 ip = err_pos;
7551                 UNVERIFIED;
7552         }
7553
7554         if (cfg->method == method)
7555                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
7556
7557         for (n = 0; n < header->num_locals; ++n) {
7558                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
7559                         UNVERIFIED;
7560         }
7561         class_inits = NULL;
7562
7563         /* We force the vtable variable here for all shared methods
7564            for the possibility that they might show up in a stack
7565            trace where their exact instantiation is needed. */
7566         if (cfg->gshared && method == cfg->method) {
7567                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
7568                                 mini_method_get_context (method)->method_inst ||
7569                                 method->klass->valuetype) {
7570                         mono_get_vtable_var (cfg);
7571                 } else {
7572                         /* FIXME: Is there a better way to do this?
7573                            We need the variable live for the duration
7574                            of the whole method. */
7575                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
7576                 }
7577         }
7578
7579         /* add a check for this != NULL to inlined methods */
7580         if (is_virtual_call) {
7581                 MonoInst *arg_ins;
7582
7583                 NEW_ARGLOAD (cfg, arg_ins, 0);
7584                 MONO_ADD_INS (cfg->cbb, arg_ins);
7585                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
7586         }
7587
7588         skip_dead_blocks = !dont_verify;
7589         if (skip_dead_blocks) {
7590                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
7591                 CHECK_CFG_ERROR;
7592                 g_assert (bb);
7593         }
7594
7595         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
7596         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
7597
7598         ins_flag = 0;
7599         start_new_bblock = 0;
7600         while (ip < end) {
7601                 if (cfg->method == method)
7602                         cfg->real_offset = ip - header->code;
7603                 else
7604                         cfg->real_offset = inline_offset;
7605                 cfg->ip = ip;
7606
7607                 context_used = 0;
7608
7609                 if (start_new_bblock) {
7610                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
7611                         if (start_new_bblock == 2) {
7612                                 g_assert (ip == tblock->cil_code);
7613                         } else {
7614                                 GET_BBLOCK (cfg, tblock, ip);
7615                         }
7616                         cfg->cbb->next_bb = tblock;
7617                         cfg->cbb = tblock;
7618                         start_new_bblock = 0;
7619                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
7620                                 if (cfg->verbose_level > 3)
7621                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7622                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7623                                 *sp++ = ins;
7624                         }
7625                         if (class_inits)
7626                                 g_slist_free (class_inits);
7627                         class_inits = NULL;
7628                 } else {
7629                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
7630                                 link_bblock (cfg, cfg->cbb, tblock);
7631                                 if (sp != stack_start) {
7632                                         handle_stack_args (cfg, stack_start, sp - stack_start);
7633                                         sp = stack_start;
7634                                         CHECK_UNVERIFIABLE (cfg);
7635                                 }
7636                                 cfg->cbb->next_bb = tblock;
7637                                 cfg->cbb = tblock;
7638                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
7639                                         if (cfg->verbose_level > 3)
7640                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
7641                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
7642                                         *sp++ = ins;
7643                                 }
7644                                 g_slist_free (class_inits);
7645                                 class_inits = NULL;
7646                         }
7647                 }
7648
7649                 if (skip_dead_blocks) {
7650                         int ip_offset = ip - header->code;
7651
7652                         if (ip_offset == bb->end)
7653                                 bb = bb->next;
7654
7655                         if (bb->dead) {
7656                                 int op_size = mono_opcode_size (ip, end);
7657                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
7658
7659                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
7660
7661                                 if (ip_offset + op_size == bb->end) {
7662                                         MONO_INST_NEW (cfg, ins, OP_NOP);
7663                                         MONO_ADD_INS (cfg->cbb, ins);
7664                                         start_new_bblock = 1;
7665                                 }
7666
7667                                 ip += op_size;
7668                                 continue;
7669                         }
7670                 }
7671                 /*
7672                  * Sequence points are points where the debugger can place a breakpoint.
7673                  * Currently, we generate these automatically at points where the IL
7674                  * stack is empty.
7675                  */
7676                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
7677                         /*
7678                          * Make methods interruptable at the beginning, and at the targets of
7679                          * backward branches.
7680                          * Also, do this at the start of every bblock in methods with clauses too,
7681                          * to be able to handle instructions with inprecise control flow like
7682                          * throw/endfinally.
7683                          * Backward branches are handled at the end of method-to-ir ().
7684                          */
7685                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
7686                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
7687
7688                         /* Avoid sequence points on empty IL like .volatile */
7689                         // FIXME: Enable this
7690                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
7691                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
7692                         if ((sp != stack_start) && !sym_seq_point)
7693                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
7694                         MONO_ADD_INS (cfg->cbb, ins);
7695
7696                         if (sym_seq_points)
7697                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
7698                 }
7699
7700                 cfg->cbb->real_offset = cfg->real_offset;
7701
7702                 if ((cfg->method == method) && cfg->coverage_info) {
7703                         guint32 cil_offset = ip - header->code;
7704                         gpointer counter = &cfg->coverage_info->data [cil_offset].count;
7705                         cfg->coverage_info->data [cil_offset].cil_code = ip;
7706
7707                         if (mono_arch_opcode_supported (OP_ATOMIC_ADD_I4)) {
7708                                 MonoInst *one_ins, *load_ins;
7709
7710                                 EMIT_NEW_PCONST (cfg, load_ins, counter);
7711                                 EMIT_NEW_ICONST (cfg, one_ins, 1);
7712                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
7713                                 ins->dreg = mono_alloc_ireg (cfg);
7714                                 ins->inst_basereg = load_ins->dreg;
7715                                 ins->inst_offset = 0;
7716                                 ins->sreg2 = one_ins->dreg;
7717                                 ins->type = STACK_I4;
7718                                 MONO_ADD_INS (cfg->cbb, ins);
7719                         } else {
7720                                 EMIT_NEW_PCONST (cfg, ins, counter);
7721                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
7722                         }
7723                 }
7724
7725                 if (cfg->verbose_level > 3)
7726                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
7727
7728                 switch (*ip) {
7729                 case CEE_NOP:
7730                         if (seq_points && !sym_seq_points && sp != stack_start) {
7731                                 /*
7732                                  * The C# compiler uses these nops to notify the JIT that it should
7733                                  * insert seq points.
7734                                  */
7735                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
7736                                 MONO_ADD_INS (cfg->cbb, ins);
7737                         }
7738                         if (cfg->keep_cil_nops)
7739                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
7740                         else
7741                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7742                         ip++;
7743                         MONO_ADD_INS (cfg->cbb, ins);
7744                         break;
7745                 case CEE_BREAK:
7746                         if (mini_should_insert_breakpoint (cfg->method)) {
7747                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
7748                         } else {
7749                                 MONO_INST_NEW (cfg, ins, OP_NOP);
7750                         }
7751                         ip++;
7752                         MONO_ADD_INS (cfg->cbb, ins);
7753                         break;
7754                 case CEE_LDARG_0:
7755                 case CEE_LDARG_1:
7756                 case CEE_LDARG_2:
7757                 case CEE_LDARG_3:
7758                         CHECK_STACK_OVF (1);
7759                         n = (*ip)-CEE_LDARG_0;
7760                         CHECK_ARG (n);
7761                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7762                         ip++;
7763                         *sp++ = ins;
7764                         break;
7765                 case CEE_LDLOC_0:
7766                 case CEE_LDLOC_1:
7767                 case CEE_LDLOC_2:
7768                 case CEE_LDLOC_3:
7769                         CHECK_STACK_OVF (1);
7770                         n = (*ip)-CEE_LDLOC_0;
7771                         CHECK_LOCAL (n);
7772                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7773                         ip++;
7774                         *sp++ = ins;
7775                         break;
7776                 case CEE_STLOC_0:
7777                 case CEE_STLOC_1:
7778                 case CEE_STLOC_2:
7779                 case CEE_STLOC_3: {
7780                         CHECK_STACK (1);
7781                         n = (*ip)-CEE_STLOC_0;
7782                         CHECK_LOCAL (n);
7783                         --sp;
7784                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
7785                                 UNVERIFIED;
7786                         emit_stloc_ir (cfg, sp, header, n);
7787                         ++ip;
7788                         inline_costs += 1;
7789                         break;
7790                         }
7791                 case CEE_LDARG_S:
7792                         CHECK_OPSIZE (2);
7793                         CHECK_STACK_OVF (1);
7794                         n = ip [1];
7795                         CHECK_ARG (n);
7796                         EMIT_NEW_ARGLOAD (cfg, ins, n);
7797                         *sp++ = ins;
7798                         ip += 2;
7799                         break;
7800                 case CEE_LDARGA_S:
7801                         CHECK_OPSIZE (2);
7802                         CHECK_STACK_OVF (1);
7803                         n = ip [1];
7804                         CHECK_ARG (n);
7805                         NEW_ARGLOADA (cfg, ins, n);
7806                         MONO_ADD_INS (cfg->cbb, ins);
7807                         *sp++ = ins;
7808                         ip += 2;
7809                         break;
7810                 case CEE_STARG_S:
7811                         CHECK_OPSIZE (2);
7812                         CHECK_STACK (1);
7813                         --sp;
7814                         n = ip [1];
7815                         CHECK_ARG (n);
7816                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
7817                                 UNVERIFIED;
7818                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
7819                         ip += 2;
7820                         break;
7821                 case CEE_LDLOC_S:
7822                         CHECK_OPSIZE (2);
7823                         CHECK_STACK_OVF (1);
7824                         n = ip [1];
7825                         CHECK_LOCAL (n);
7826                         EMIT_NEW_LOCLOAD (cfg, ins, n);
7827                         *sp++ = ins;
7828                         ip += 2;
7829                         break;
7830                 case CEE_LDLOCA_S: {
7831                         unsigned char *tmp_ip;
7832                         CHECK_OPSIZE (2);
7833                         CHECK_STACK_OVF (1);
7834                         CHECK_LOCAL (ip [1]);
7835
7836                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
7837                                 ip = tmp_ip;
7838                                 inline_costs += 1;
7839                                 break;
7840                         }
7841
7842                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
7843                         *sp++ = ins;
7844                         ip += 2;
7845                         break;
7846                 }
7847                 case CEE_STLOC_S:
7848                         CHECK_OPSIZE (2);
7849                         CHECK_STACK (1);
7850                         --sp;
7851                         CHECK_LOCAL (ip [1]);
7852                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
7853                                 UNVERIFIED;
7854                         emit_stloc_ir (cfg, sp, header, ip [1]);
7855                         ip += 2;
7856                         inline_costs += 1;
7857                         break;
7858                 case CEE_LDNULL:
7859                         CHECK_STACK_OVF (1);
7860                         EMIT_NEW_PCONST (cfg, ins, NULL);
7861                         ins->type = STACK_OBJ;
7862                         ++ip;
7863                         *sp++ = ins;
7864                         break;
7865                 case CEE_LDC_I4_M1:
7866                         CHECK_STACK_OVF (1);
7867                         EMIT_NEW_ICONST (cfg, ins, -1);
7868                         ++ip;
7869                         *sp++ = ins;
7870                         break;
7871                 case CEE_LDC_I4_0:
7872                 case CEE_LDC_I4_1:
7873                 case CEE_LDC_I4_2:
7874                 case CEE_LDC_I4_3:
7875                 case CEE_LDC_I4_4:
7876                 case CEE_LDC_I4_5:
7877                 case CEE_LDC_I4_6:
7878                 case CEE_LDC_I4_7:
7879                 case CEE_LDC_I4_8:
7880                         CHECK_STACK_OVF (1);
7881                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
7882                         ++ip;
7883                         *sp++ = ins;
7884                         break;
7885                 case CEE_LDC_I4_S:
7886                         CHECK_OPSIZE (2);
7887                         CHECK_STACK_OVF (1);
7888                         ++ip;
7889                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
7890                         ++ip;
7891                         *sp++ = ins;
7892                         break;
7893                 case CEE_LDC_I4:
7894                         CHECK_OPSIZE (5);
7895                         CHECK_STACK_OVF (1);
7896                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
7897                         ip += 5;
7898                         *sp++ = ins;
7899                         break;
7900                 case CEE_LDC_I8:
7901                         CHECK_OPSIZE (9);
7902                         CHECK_STACK_OVF (1);
7903                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
7904                         ins->type = STACK_I8;
7905                         ins->dreg = alloc_dreg (cfg, STACK_I8);
7906                         ++ip;
7907                         ins->inst_l = (gint64)read64 (ip);
7908                         MONO_ADD_INS (cfg->cbb, ins);
7909                         ip += 8;
7910                         *sp++ = ins;
7911                         break;
7912                 case CEE_LDC_R4: {
7913                         float *f;
7914                         gboolean use_aotconst = FALSE;
7915
7916 #ifdef TARGET_POWERPC
7917                         /* FIXME: Clean this up */
7918                         if (cfg->compile_aot)
7919                                 use_aotconst = TRUE;
7920 #endif
7921
7922                         /* FIXME: we should really allocate this only late in the compilation process */
7923                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
7924                         CHECK_OPSIZE (5);
7925                         CHECK_STACK_OVF (1);
7926
7927                         if (use_aotconst) {
7928                                 MonoInst *cons;
7929                                 int dreg;
7930
7931                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
7932
7933                                 dreg = alloc_freg (cfg);
7934                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
7935                                 ins->type = cfg->r4_stack_type;
7936                         } else {
7937                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
7938                                 ins->type = cfg->r4_stack_type;
7939                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7940                                 ins->inst_p0 = f;
7941                                 MONO_ADD_INS (cfg->cbb, ins);
7942                         }
7943                         ++ip;
7944                         readr4 (ip, f);
7945                         ip += 4;
7946                         *sp++ = ins;
7947                         break;
7948                 }
7949                 case CEE_LDC_R8: {
7950                         double *d;
7951                         gboolean use_aotconst = FALSE;
7952
7953 #ifdef TARGET_POWERPC
7954                         /* FIXME: Clean this up */
7955                         if (cfg->compile_aot)
7956                                 use_aotconst = TRUE;
7957 #endif
7958
7959                         /* FIXME: we should really allocate this only late in the compilation process */
7960                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
7961                         CHECK_OPSIZE (9);
7962                         CHECK_STACK_OVF (1);
7963
7964                         if (use_aotconst) {
7965                                 MonoInst *cons;
7966                                 int dreg;
7967
7968                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
7969
7970                                 dreg = alloc_freg (cfg);
7971                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
7972                                 ins->type = STACK_R8;
7973                         } else {
7974                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7975                                 ins->type = STACK_R8;
7976                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
7977                                 ins->inst_p0 = d;
7978                                 MONO_ADD_INS (cfg->cbb, ins);
7979                         }
7980                         ++ip;
7981                         readr8 (ip, d);
7982                         ip += 8;
7983                         *sp++ = ins;
7984                         break;
7985                 }
7986                 case CEE_DUP: {
7987                         MonoInst *temp, *store;
7988                         CHECK_STACK (1);
7989                         CHECK_STACK_OVF (1);
7990                         sp--;
7991                         ins = *sp;
7992
7993                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
7994                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
7995
7996                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
7997                         *sp++ = ins;
7998
7999                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8000                         *sp++ = ins;
8001
8002                         ++ip;
8003                         inline_costs += 2;
8004                         break;
8005                 }
8006                 case CEE_POP:
8007                         CHECK_STACK (1);
8008                         ip++;
8009                         --sp;
8010
8011 #ifdef TARGET_X86
8012                         if (sp [0]->type == STACK_R8)
8013                                 /* we need to pop the value from the x86 FP stack */
8014                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8015 #endif
8016                         break;
8017                 case CEE_JMP: {
8018                         MonoCallInst *call;
8019                         MonoMethodSignature *fsig;
8020                         int i, n;
8021
8022                         INLINE_FAILURE ("jmp");
8023                         GSHAREDVT_FAILURE (*ip);
8024
8025                         CHECK_OPSIZE (5);
8026                         if (stack_start != sp)
8027                                 UNVERIFIED;
8028                         token = read32 (ip + 1);
8029                         /* FIXME: check the signature matches */
8030                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8031                         CHECK_CFG_ERROR;
8032
8033                         if (cfg->gshared && mono_method_check_context_used (cmethod))
8034                                 GENERIC_SHARING_FAILURE (CEE_JMP);
8035
8036                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8037
8038                         fsig = mono_method_signature (cmethod);
8039                         n = fsig->param_count + fsig->hasthis;
8040                         if (cfg->llvm_only) {
8041                                 MonoInst **args;
8042
8043                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8044                                 for (i = 0; i < n; ++i)
8045                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
8046                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
8047                                 /*
8048                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
8049                                  * have to emit a normal return since llvm expects it.
8050                                  */
8051                                 if (cfg->ret)
8052                                         emit_setret (cfg, ins);
8053                                 MONO_INST_NEW (cfg, ins, OP_BR);
8054                                 ins->inst_target_bb = end_bblock;
8055                                 MONO_ADD_INS (cfg->cbb, ins);
8056                                 link_bblock (cfg, cfg->cbb, end_bblock);
8057                                 ip += 5;
8058                                 break;
8059                         } else if (cfg->backend->have_op_tail_call) {
8060                                 /* Handle tail calls similarly to calls */
8061                                 DISABLE_AOT (cfg);
8062
8063                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
8064                                 call->method = cmethod;
8065                                 call->tail_call = TRUE;
8066                                 call->signature = mono_method_signature (cmethod);
8067                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
8068                                 call->inst.inst_p0 = cmethod;
8069                                 for (i = 0; i < n; ++i)
8070                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
8071
8072                                 if (mini_type_is_vtype (mini_get_underlying_type (call->signature->ret)))
8073                                         call->vret_var = cfg->vret_addr;
8074
8075                                 mono_arch_emit_call (cfg, call);
8076                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
8077                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
8078                         } else {
8079                                 for (i = 0; i < num_args; ++i)
8080                                         /* Prevent arguments from being optimized away */
8081                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
8082
8083                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8084                                 ins = (MonoInst*)call;
8085                                 ins->inst_p0 = cmethod;
8086                                 MONO_ADD_INS (cfg->cbb, ins);
8087                         }
8088
8089                         ip += 5;
8090                         start_new_bblock = 1;
8091                         break;
8092                 }
8093                 case CEE_CALLI: {
8094                         MonoInst *addr;
8095                         MonoMethodSignature *fsig;
8096
8097                         CHECK_OPSIZE (5);
8098                         token = read32 (ip + 1);
8099
8100                         ins = NULL;
8101
8102                         //GSHAREDVT_FAILURE (*ip);
8103                         cmethod = NULL;
8104                         CHECK_STACK (1);
8105                         --sp;
8106                         addr = *sp;
8107                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
8108                         CHECK_CFG_ERROR;
8109
8110                         if (method->dynamic && fsig->pinvoke) {
8111                                 MonoInst *args [3];
8112
8113                                 /*
8114                                  * This is a call through a function pointer using a pinvoke
8115                                  * signature. Have to create a wrapper and call that instead.
8116                                  * FIXME: This is very slow, need to create a wrapper at JIT time
8117                                  * instead based on the signature.
8118                                  */
8119                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
8120                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
8121                                 args [2] = addr;
8122                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
8123                         }
8124
8125                         n = fsig->param_count + fsig->hasthis;
8126
8127                         CHECK_STACK (n);
8128
8129                         //g_assert (!virtual_ || fsig->hasthis);
8130
8131                         sp -= n;
8132
8133                         inline_costs += 10 * num_calls++;
8134
8135                         /*
8136                          * Making generic calls out of gsharedvt methods.
8137                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8138                          * patching gshared method addresses into a gsharedvt method.
8139                          */
8140                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8141                                 /*
8142                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
8143                                  */
8144                                 MonoInst *callee = addr;
8145
8146                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
8147                                         /* Not tested */
8148                                         GSHAREDVT_FAILURE (*ip);
8149
8150                                 if (cfg->llvm_only)
8151                                         // FIXME:
8152                                         GSHAREDVT_FAILURE (*ip);
8153
8154                                 addr = emit_get_rgctx_sig (cfg, context_used,
8155                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
8156                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
8157                                 goto calli_end;
8158                         }
8159
8160                         /* Prevent inlining of methods with indirect calls */
8161                         INLINE_FAILURE ("indirect call");
8162
8163                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
8164                                 MonoJumpInfoType info_type;
8165                                 gpointer info_data;
8166
8167                                 /*
8168                                  * Instead of emitting an indirect call, emit a direct call
8169                                  * with the contents of the aotconst as the patch info.
8170                                  */
8171                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
8172                                         info_type = (MonoJumpInfoType)addr->inst_c1;
8173                                         info_data = addr->inst_p0;
8174                                 } else {
8175                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
8176                                         info_data = addr->inst_right->inst_left;
8177                                 }
8178
8179                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
8180                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
8181                                         NULLIFY_INS (addr);
8182                                         goto calli_end;
8183                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
8184                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
8185                                         NULLIFY_INS (addr);
8186                                         goto calli_end;
8187                                 }
8188                         }
8189                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8190
8191                         calli_end:
8192
8193                         /* End of call, INS should contain the result of the call, if any */
8194
8195                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8196                                 g_assert (ins);
8197                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
8198                         }
8199
8200                         CHECK_CFG_EXCEPTION;
8201
8202                         ip += 5;
8203                         ins_flag = 0;
8204                         constrained_class = NULL;
8205                         break;
8206                 }
8207                 case CEE_CALL:
8208                 case CEE_CALLVIRT: {
8209                         MonoInst *addr = NULL;
8210                         MonoMethodSignature *fsig = NULL;
8211                         int array_rank = 0;
8212                         int virtual_ = *ip == CEE_CALLVIRT;
8213                         gboolean pass_imt_from_rgctx = FALSE;
8214                         MonoInst *imt_arg = NULL;
8215                         MonoInst *keep_this_alive = NULL;
8216                         gboolean pass_vtable = FALSE;
8217                         gboolean pass_mrgctx = FALSE;
8218                         MonoInst *vtable_arg = NULL;
8219                         gboolean check_this = FALSE;
8220                         gboolean supported_tail_call = FALSE;
8221                         gboolean tail_call = FALSE;
8222                         gboolean need_seq_point = FALSE;
8223                         guint32 call_opcode = *ip;
8224                         gboolean emit_widen = TRUE;
8225                         gboolean push_res = TRUE;
8226                         gboolean skip_ret = FALSE;
8227                         gboolean delegate_invoke = FALSE;
8228                         gboolean direct_icall = FALSE;
8229                         gboolean constrained_partial_call = FALSE;
8230                         MonoMethod *cil_method;
8231
8232                         CHECK_OPSIZE (5);
8233                         token = read32 (ip + 1);
8234
8235                         ins = NULL;
8236
8237                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8238                         CHECK_CFG_ERROR;
8239
8240                         cil_method = cmethod;
8241
8242                         if (constrained_class) {
8243                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8244                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
8245                                                 g_assert (!cmethod->klass->valuetype);
8246                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
8247                                                         constrained_partial_call = TRUE;
8248                                         }
8249                                 }
8250
8251                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
8252                                         if (cfg->verbose_level > 2)
8253                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8254                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
8255                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
8256                                                   cfg->gshared)) {
8257                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
8258                                                 CHECK_CFG_ERROR;
8259                                         }
8260                                 } else {
8261                                         if (cfg->verbose_level > 2)
8262                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
8263
8264                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
8265                                                 /*
8266                                                  * This is needed since get_method_constrained can't find
8267                                                  * the method in klass representing a type var.
8268                                                  * The type var is guaranteed to be a reference type in this
8269                                                  * case.
8270                                                  */
8271                                                 if (!mini_is_gsharedvt_klass (constrained_class))
8272                                                         g_assert (!cmethod->klass->valuetype);
8273                                         } else {
8274                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
8275                                                 CHECK_CFG_ERROR;
8276                                         }
8277                                 }
8278
8279                                 if (constrained_class->enumtype && !strcmp (cmethod->name, "GetHashCode")) {
8280                                         /* Use the corresponding method from the base type to avoid boxing */
8281                                         MonoType *base_type = mono_class_enum_basetype (constrained_class);
8282                                         g_assert (base_type);
8283                                         constrained_class = mono_class_from_mono_type (base_type);
8284                                         cmethod = mono_class_get_method_from_name (constrained_class, cmethod->name, 0);
8285                                         g_assert (cmethod);
8286                                 }
8287                         }
8288
8289                         if (!dont_verify && !cfg->skip_visibility) {
8290                                 MonoMethod *target_method = cil_method;
8291                                 if (method->is_inflated) {
8292                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
8293                                         CHECK_CFG_ERROR;
8294                                 }
8295                                 if (!mono_method_can_access_method (method_definition, target_method) &&
8296                                         !mono_method_can_access_method (method, cil_method))
8297                                         emit_method_access_failure (cfg, method, cil_method);
8298                         }
8299
8300                         if (mono_security_core_clr_enabled ())
8301                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
8302
8303                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
8304                                 /* MS.NET seems to silently convert this to a callvirt */
8305                                 virtual_ = 1;
8306
8307                         {
8308                                 /*
8309                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
8310                                  * converts to a callvirt.
8311                                  *
8312                                  * tests/bug-515884.il is an example of this behavior
8313                                  */
8314                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
8315                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
8316                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
8317                                         virtual_ = 1;
8318                         }
8319
8320                         if (!cmethod->klass->inited)
8321                                 if (!mono_class_init (cmethod->klass))
8322                                         TYPE_LOAD_ERROR (cmethod->klass);
8323
8324                         fsig = mono_method_signature (cmethod);
8325                         if (!fsig)
8326                                 LOAD_ERROR;
8327                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
8328                                 mini_class_is_system_array (cmethod->klass)) {
8329                                 array_rank = cmethod->klass->rank;
8330                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
8331                                 direct_icall = TRUE;
8332                         } else if (fsig->pinvoke) {
8333                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8334                                 fsig = mono_method_signature (wrapper);
8335                         } else if (constrained_class) {
8336                         } else {
8337                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
8338                                 CHECK_CFG_ERROR;
8339                         }
8340
8341                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
8342                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
8343
8344                         /* See code below */
8345                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8346                                 MonoBasicBlock *tbb;
8347
8348                                 GET_BBLOCK (cfg, tbb, ip + 5);
8349                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8350                                         /*
8351                                          * We want to extend the try block to cover the call, but we can't do it if the
8352                                          * call is made directly since its followed by an exception check.
8353                                          */
8354                                         direct_icall = FALSE;
8355                                 }
8356                         }
8357
8358                         mono_save_token_info (cfg, image, token, cil_method);
8359
8360                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
8361                                 need_seq_point = TRUE;
8362
8363                         /* Don't support calls made using type arguments for now */
8364                         /*
8365                           if (cfg->gsharedvt) {
8366                           if (mini_is_gsharedvt_signature (fsig))
8367                           GSHAREDVT_FAILURE (*ip);
8368                           }
8369                         */
8370
8371                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
8372                                 g_assert_not_reached ();
8373
8374                         n = fsig->param_count + fsig->hasthis;
8375
8376                         if (!cfg->gshared && mono_class_is_gtd (cmethod->klass))
8377                                 UNVERIFIED;
8378
8379                         if (!cfg->gshared)
8380                                 g_assert (!mono_method_check_context_used (cmethod));
8381
8382                         CHECK_STACK (n);
8383
8384                         //g_assert (!virtual_ || fsig->hasthis);
8385
8386                         sp -= n;
8387
8388                         if (cmethod && cmethod->klass->image == mono_defaults.corlib && !strcmp (cmethod->klass->name, "ThrowHelper"))
8389                                 cfg->cbb->out_of_line = TRUE;
8390
8391                         /*
8392                          * We have the `constrained.' prefix opcode.
8393                          */
8394                         if (constrained_class) {
8395                                 if (mini_is_gsharedvt_klass (constrained_class)) {
8396                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
8397                                                 /* The 'Own method' case below */
8398                                         } else if (cmethod->klass->image != mono_defaults.corlib && !mono_class_is_interface (cmethod->klass) && !cmethod->klass->valuetype) {
8399                                                 /* 'The type parameter is instantiated as a reference type' case below. */
8400                                         } else {
8401                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
8402                                                 CHECK_CFG_EXCEPTION;
8403                                                 g_assert (ins);
8404                                                 goto call_end;
8405                                         }
8406                                 }
8407
8408                                 if (constrained_partial_call) {
8409                                         gboolean need_box = TRUE;
8410
8411                                         /*
8412                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
8413                                          * called method is not known at compile time either. The called method could end up being
8414                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
8415                                          * to box the receiver.
8416                                          * A simple solution would be to box always and make a normal virtual call, but that would
8417                                          * be bad performance wise.
8418                                          */
8419                                         if (mono_class_is_interface (cmethod->klass) && mono_class_is_ginst (cmethod->klass)) {
8420                                                 /*
8421                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
8422                                                  */
8423                                                 need_box = FALSE;
8424                                         }
8425
8426                                         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)) {
8427                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
8428                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8429                                                 ins->klass = constrained_class;
8430                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8431                                                 CHECK_CFG_EXCEPTION;
8432                                         } else if (need_box) {
8433                                                 MonoInst *box_type;
8434                                                 MonoBasicBlock *is_ref_bb, *end_bb;
8435                                                 MonoInst *nonbox_call;
8436
8437                                                 /*
8438                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
8439                                                  * if needed.
8440                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
8441                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
8442                                                  */
8443                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8444
8445                                                 NEW_BBLOCK (cfg, is_ref_bb);
8446                                                 NEW_BBLOCK (cfg, end_bb);
8447
8448                                                 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);
8449                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
8450                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
8451
8452                                                 /* Non-ref case */
8453                                                 nonbox_call = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8454
8455                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8456
8457                                                 /* Ref case */
8458                                                 MONO_START_BB (cfg, is_ref_bb);
8459                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8460                                                 ins->klass = constrained_class;
8461                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8462                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8463
8464                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
8465
8466                                                 MONO_START_BB (cfg, end_bb);
8467                                                 cfg->cbb = end_bb;
8468
8469                                                 nonbox_call->dreg = ins->dreg;
8470                                                 goto call_end;
8471                                         } else {
8472                                                 g_assert (mono_class_is_interface (cmethod->klass));
8473                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
8474                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8475                                                 goto call_end;
8476                                         }
8477                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
8478                                         /*
8479                                          * The type parameter is instantiated as a valuetype,
8480                                          * but that type doesn't override the method we're
8481                                          * calling, so we need to box `this'.
8482                                          */
8483                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8484                                         ins->klass = constrained_class;
8485                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8486                                         CHECK_CFG_EXCEPTION;
8487                                 } else if (!constrained_class->valuetype) {
8488                                         int dreg = alloc_ireg_ref (cfg);
8489
8490                                         /*
8491                                          * The type parameter is instantiated as a reference
8492                                          * type.  We have a managed pointer on the stack, so
8493                                          * we need to dereference it here.
8494                                          */
8495                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
8496                                         ins->type = STACK_OBJ;
8497                                         sp [0] = ins;
8498                                 } else {
8499                                         if (cmethod->klass->valuetype) {
8500                                                 /* Own method */
8501                                         } else {
8502                                                 /* Interface method */
8503                                                 int ioffset, slot;
8504
8505                                                 mono_class_setup_vtable (constrained_class);
8506                                                 CHECK_TYPELOAD (constrained_class);
8507                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
8508                                                 if (ioffset == -1)
8509                                                         TYPE_LOAD_ERROR (constrained_class);
8510                                                 slot = mono_method_get_vtable_slot (cmethod);
8511                                                 if (slot == -1)
8512                                                         TYPE_LOAD_ERROR (cmethod->klass);
8513                                                 cmethod = constrained_class->vtable [ioffset + slot];
8514
8515                                                 if (cmethod->klass == mono_defaults.enum_class) {
8516                                                         /* Enum implements some interfaces, so treat this as the first case */
8517                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
8518                                                         ins->klass = constrained_class;
8519                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
8520                                                         CHECK_CFG_EXCEPTION;
8521                                                 }
8522                                         }
8523                                         virtual_ = 0;
8524                                 }
8525                                 constrained_class = NULL;
8526                         }
8527
8528                         if (check_call_signature (cfg, fsig, sp))
8529                                 UNVERIFIED;
8530
8531                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
8532                                 delegate_invoke = TRUE;
8533
8534                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
8535                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8536                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8537                                         emit_widen = FALSE;
8538                                 }
8539
8540                                 goto call_end;
8541                         }
8542
8543                         /*
8544                          * If the callee is a shared method, then its static cctor
8545                          * might not get called after the call was patched.
8546                          */
8547                         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)) {
8548                                 emit_class_init (cfg, cmethod->klass);
8549                                 CHECK_TYPELOAD (cmethod->klass);
8550                         }
8551
8552                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
8553
8554                         if (cfg->gshared) {
8555                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
8556
8557                                 context_used = mini_method_check_context_used (cfg, cmethod);
8558
8559                                 if (context_used && mono_class_is_interface (cmethod->klass)) {
8560                                         /* Generic method interface
8561                                            calls are resolved via a
8562                                            helper function and don't
8563                                            need an imt. */
8564                                         if (!cmethod_context || !cmethod_context->method_inst)
8565                                                 pass_imt_from_rgctx = TRUE;
8566                                 }
8567
8568                                 /*
8569                                  * If a shared method calls another
8570                                  * shared method then the caller must
8571                                  * have a generic sharing context
8572                                  * because the magic trampoline
8573                                  * requires it.  FIXME: We shouldn't
8574                                  * have to force the vtable/mrgctx
8575                                  * variable here.  Instead there
8576                                  * should be a flag in the cfg to
8577                                  * request a generic sharing context.
8578                                  */
8579                                 if (context_used &&
8580                                                 ((cfg->method->flags & METHOD_ATTRIBUTE_STATIC) || cfg->method->klass->valuetype))
8581                                         mono_get_vtable_var (cfg);
8582                         }
8583
8584                         if (pass_vtable) {
8585                                 if (context_used) {
8586                                         vtable_arg = mini_emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8587                                 } else {
8588                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8589
8590                                         CHECK_TYPELOAD (cmethod->klass);
8591                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8592                                 }
8593                         }
8594
8595                         if (pass_mrgctx) {
8596                                 g_assert (!vtable_arg);
8597
8598                                 if (!cfg->compile_aot) {
8599                                         /*
8600                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
8601                                          * for type load errors before.
8602                                          */
8603                                         mono_class_setup_vtable (cmethod->klass);
8604                                         CHECK_TYPELOAD (cmethod->klass);
8605                                 }
8606
8607                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8608
8609                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
8610                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
8611                                          MONO_METHOD_IS_FINAL (cmethod)) &&
8612                                         !mono_class_is_marshalbyref (cmethod->klass)) {
8613                                         if (virtual_)
8614                                                 check_this = TRUE;
8615                                         virtual_ = 0;
8616                                 }
8617                         }
8618
8619                         if (pass_imt_from_rgctx) {
8620                                 g_assert (!pass_vtable);
8621
8622                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8623                                         cmethod, MONO_RGCTX_INFO_METHOD);
8624                         }
8625
8626                         if (check_this)
8627                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8628
8629                         /* Calling virtual generic methods */
8630                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
8631                             !(MONO_METHOD_IS_FINAL (cmethod) &&
8632                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
8633                             fsig->generic_param_count &&
8634                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
8635                                 !cfg->llvm_only) {
8636                                 MonoInst *this_temp, *this_arg_temp, *store;
8637                                 MonoInst *iargs [4];
8638
8639                                 g_assert (fsig->is_inflated);
8640
8641                                 /* Prevent inlining of methods that contain indirect calls */
8642                                 INLINE_FAILURE ("virtual generic call");
8643
8644                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8645                                         GSHAREDVT_FAILURE (*ip);
8646
8647                                 if (cfg->backend->have_generalized_imt_trampoline && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
8648                                         g_assert (!imt_arg);
8649                                         if (!context_used)
8650                                                 g_assert (cmethod->is_inflated);
8651                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
8652                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
8653                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
8654                                 } else {
8655                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
8656                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
8657                                         MONO_ADD_INS (cfg->cbb, store);
8658
8659                                         /* FIXME: This should be a managed pointer */
8660                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8661
8662                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
8663                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
8664                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
8665                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
8666                                         addr = mono_emit_jit_icall (cfg,
8667                                                                                                 mono_helper_compile_generic_method, iargs);
8668
8669                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
8670
8671                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
8672                                 }
8673
8674                                 goto call_end;
8675                         }
8676
8677                         /*
8678                          * Implement a workaround for the inherent races involved in locking:
8679                          * Monitor.Enter ()
8680                          * try {
8681                          * } finally {
8682                          *    Monitor.Exit ()
8683                          * }
8684                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
8685                          * try block, the Exit () won't be executed, see:
8686                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
8687                          * To work around this, we extend such try blocks to include the last x bytes
8688                          * of the Monitor.Enter () call.
8689                          */
8690                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
8691                                 MonoBasicBlock *tbb;
8692
8693                                 GET_BBLOCK (cfg, tbb, ip + 5);
8694                                 /*
8695                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
8696                                  * from Monitor.Enter like ArgumentNullException.
8697                                  */
8698                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
8699                                         /* Mark this bblock as needing to be extended */
8700                                         tbb->extend_try_block = TRUE;
8701                                 }
8702                         }
8703
8704                         /* Conversion to a JIT intrinsic */
8705                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
8706                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8707                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
8708                                         emit_widen = FALSE;
8709                                 }
8710                                 goto call_end;
8711                         }
8712                         CHECK_CFG_ERROR;
8713
8714                         /* Inlining */
8715                         if ((cfg->opt & MONO_OPT_INLINE) &&
8716                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
8717                             mono_method_check_inlining (cfg, cmethod)) {
8718                                 int costs;
8719                                 gboolean always = FALSE;
8720
8721                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
8722                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
8723                                         /* Prevent inlining of methods that call wrappers */
8724                                         INLINE_FAILURE ("wrapper call");
8725                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
8726                                         always = TRUE;
8727                                 }
8728
8729                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
8730                                 if (costs) {
8731                                         cfg->real_offset += 5;
8732
8733                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8734                                                 /* *sp is already set by inline_method */
8735                                                 sp++;
8736                                                 push_res = FALSE;
8737                                         }
8738
8739                                         inline_costs += costs;
8740
8741                                         goto call_end;
8742                                 }
8743                         }
8744
8745                         /* Tail recursion elimination */
8746                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
8747                                 gboolean has_vtargs = FALSE;
8748                                 int i;
8749
8750                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8751                                 INLINE_FAILURE ("tail call");
8752
8753                                 /* keep it simple */
8754                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
8755                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
8756                                                 has_vtargs = TRUE;
8757                                 }
8758
8759                                 if (!has_vtargs) {
8760                                         if (need_seq_point) {
8761                                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
8762                                                 need_seq_point = FALSE;
8763                                         }
8764                                         for (i = 0; i < n; ++i)
8765                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8766                                         MONO_INST_NEW (cfg, ins, OP_BR);
8767                                         MONO_ADD_INS (cfg->cbb, ins);
8768                                         tblock = start_bblock->out_bb [0];
8769                                         link_bblock (cfg, cfg->cbb, tblock);
8770                                         ins->inst_target_bb = tblock;
8771                                         start_new_bblock = 1;
8772
8773                                         /* skip the CEE_RET, too */
8774                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
8775                                                 skip_ret = TRUE;
8776                                         push_res = FALSE;
8777                                         goto call_end;
8778                                 }
8779                         }
8780
8781                         inline_costs += 10 * num_calls++;
8782
8783                         /*
8784                          * Synchronized wrappers.
8785                          * Its hard to determine where to replace a method with its synchronized
8786                          * wrapper without causing an infinite recursion. The current solution is
8787                          * to add the synchronized wrapper in the trampolines, and to
8788                          * change the called method to a dummy wrapper, and resolve that wrapper
8789                          * to the real method in mono_jit_compile_method ().
8790                          */
8791                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
8792                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
8793                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
8794                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
8795                         }
8796
8797                         /*
8798                          * Making generic calls out of gsharedvt methods.
8799                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
8800                          * patching gshared method addresses into a gsharedvt method.
8801                          */
8802                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || mono_class_is_ginst (cmethod->klass)) &&
8803                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
8804                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
8805                                 MonoRgctxInfoType info_type;
8806
8807                                 if (virtual_) {
8808                                         //if (mono_class_is_interface (cmethod->klass))
8809                                                 //GSHAREDVT_FAILURE (*ip);
8810                                         // disable for possible remoting calls
8811                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
8812                                                 GSHAREDVT_FAILURE (*ip);
8813                                         if (fsig->generic_param_count) {
8814                                                 /* virtual generic call */
8815                                                 g_assert (!imt_arg);
8816                                                 /* Same as the virtual generic case above */
8817                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8818                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8819                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
8820                                                 vtable_arg = NULL;
8821                                         } else if (mono_class_is_interface (cmethod->klass) && !imt_arg) {
8822                                                 /* This can happen when we call a fully instantiated iface method */
8823                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
8824                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
8825                                                 vtable_arg = NULL;
8826                                         }
8827                                 }
8828
8829                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
8830                                         keep_this_alive = sp [0];
8831
8832                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
8833                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
8834                                 else
8835                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
8836                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
8837
8838                                 if (cfg->llvm_only) {
8839                                         // FIXME: Avoid initializing vtable_arg
8840                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8841                                 } else {
8842                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8843                                 }
8844                                 goto call_end;
8845                         }
8846
8847                         /* Generic sharing */
8848
8849                         /*
8850                          * Use this if the callee is gsharedvt sharable too, since
8851                          * at runtime we might find an instantiation so the call cannot
8852                          * be patched (the 'no_patch' code path in mini-trampolines.c).
8853                          */
8854                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
8855                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8856                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
8857                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
8858                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
8859                                 INLINE_FAILURE ("gshared");
8860
8861                                 g_assert (cfg->gshared && cmethod);
8862                                 g_assert (!addr);
8863
8864                                 /*
8865                                  * We are compiling a call to a
8866                                  * generic method from shared code,
8867                                  * which means that we have to look up
8868                                  * the method in the rgctx and do an
8869                                  * indirect call.
8870                                  */
8871                                 if (fsig->hasthis)
8872                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
8873
8874                                 if (cfg->llvm_only) {
8875                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
8876                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
8877                                         else
8878                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8879                                         // FIXME: Avoid initializing imt_arg/vtable_arg
8880                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
8881                                 } else {
8882                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8883                                         ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
8884                                 }
8885                                 goto call_end;
8886                         }
8887
8888                         /* Direct calls to icalls */
8889                         if (direct_icall) {
8890                                 MonoMethod *wrapper;
8891                                 int costs;
8892
8893                                 /* Inline the wrapper */
8894                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
8895
8896                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
8897                                 g_assert (costs > 0);
8898                                 cfg->real_offset += 5;
8899
8900                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
8901                                         /* *sp is already set by inline_method */
8902                                         sp++;
8903                                         push_res = FALSE;
8904                                 }
8905
8906                                 inline_costs += costs;
8907
8908                                 goto call_end;
8909                         }
8910
8911                         /* Array methods */
8912                         if (array_rank) {
8913                                 MonoInst *addr;
8914
8915                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
8916                                         MonoInst *val = sp [fsig->param_count];
8917
8918                                         if (val->type == STACK_OBJ) {
8919                                                 MonoInst *iargs [2];
8920
8921                                                 iargs [0] = sp [0];
8922                                                 iargs [1] = val;
8923
8924                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
8925                                         }
8926
8927                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
8928                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
8929                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !MONO_INS_IS_PCONST_NULL (val))
8930                                                 mini_emit_write_barrier (cfg, addr, val);
8931                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
8932                                                 GSHAREDVT_FAILURE (*ip);
8933                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
8934                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8935
8936                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
8937                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
8938                                         if (!cmethod->klass->element_class->valuetype && !readonly)
8939                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
8940                                         CHECK_TYPELOAD (cmethod->klass);
8941
8942                                         readonly = FALSE;
8943                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
8944                                         ins = addr;
8945                                 } else {
8946                                         g_assert_not_reached ();
8947                                 }
8948
8949                                 emit_widen = FALSE;
8950                                 goto call_end;
8951                         }
8952
8953                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
8954                         if (ins)
8955                                 goto call_end;
8956
8957                         /* Tail prefix / tail call optimization */
8958
8959                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
8960                         /* FIXME: runtime generic context pointer for jumps? */
8961                         /* FIXME: handle this for generic sharing eventually */
8962                         if ((ins_flag & MONO_INST_TAILCALL) &&
8963                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
8964                                 supported_tail_call = TRUE;
8965
8966                         if (supported_tail_call) {
8967                                 MonoCallInst *call;
8968
8969                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
8970                                 INLINE_FAILURE ("tail call");
8971
8972                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
8973
8974                                 if (cfg->backend->have_op_tail_call) {
8975                                         /* Handle tail calls similarly to normal calls */
8976                                         tail_call = TRUE;
8977                                 } else {
8978                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
8979
8980                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
8981                                         call->tail_call = TRUE;
8982                                         call->method = cmethod;
8983                                         call->signature = mono_method_signature (cmethod);
8984
8985                                         /*
8986                                          * We implement tail calls by storing the actual arguments into the
8987                                          * argument variables, then emitting a CEE_JMP.
8988                                          */
8989                                         for (i = 0; i < n; ++i) {
8990                                                 /* Prevent argument from being register allocated */
8991                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
8992                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
8993                                         }
8994                                         ins = (MonoInst*)call;
8995                                         ins->inst_p0 = cmethod;
8996                                         ins->inst_p1 = arg_array [0];
8997                                         MONO_ADD_INS (cfg->cbb, ins);
8998                                         link_bblock (cfg, cfg->cbb, end_bblock);
8999                                         start_new_bblock = 1;
9000
9001                                         // FIXME: Eliminate unreachable epilogs
9002
9003                                         /*
9004                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9005                                          * only reachable from this call.
9006                                          */
9007                                         GET_BBLOCK (cfg, tblock, ip + 5);
9008                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9009                                                 skip_ret = TRUE;
9010                                         push_res = FALSE;
9011
9012                                         goto call_end;
9013                                 }
9014                         }
9015
9016                         /*
9017                          * Virtual calls in llvm-only mode.
9018                          */
9019                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9020                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9021                                 goto call_end;
9022                         }
9023
9024                         /* Common call */
9025                         if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) && !(cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
9026                                 INLINE_FAILURE ("call");
9027                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9028                                                                                           imt_arg, vtable_arg);
9029
9030                         if (tail_call && !cfg->llvm_only) {
9031                                 link_bblock (cfg, cfg->cbb, end_bblock);
9032                                 start_new_bblock = 1;
9033
9034                                 // FIXME: Eliminate unreachable epilogs
9035
9036                                 /*
9037                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9038                                  * only reachable from this call.
9039                                  */
9040                                 GET_BBLOCK (cfg, tblock, ip + 5);
9041                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9042                                         skip_ret = TRUE;
9043                                 push_res = FALSE;
9044                         }
9045
9046                         call_end:
9047
9048                         /* End of call, INS should contain the result of the call, if any */
9049
9050                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9051                                 g_assert (ins);
9052                                 if (emit_widen)
9053                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9054                                 else
9055                                         *sp++ = ins;
9056                         }
9057
9058                         if (keep_this_alive) {
9059                                 MonoInst *dummy_use;
9060
9061                                 /* See mono_emit_method_call_full () */
9062                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
9063                         }
9064
9065                         if (cfg->llvm_only && cmethod && method_needs_stack_walk (cfg, cmethod)) {
9066                                 /*
9067                                  * Clang can convert these calls to tail calls which screw up the stack
9068                                  * walk. This happens even when the -fno-optimize-sibling-calls
9069                                  * option is passed to clang.
9070                                  * Work around this by emitting a dummy call.
9071                                  */
9072                                 mono_emit_jit_icall (cfg, mono_dummy_jit_icall, NULL);
9073                         }
9074
9075                         CHECK_CFG_EXCEPTION;
9076
9077                         ip += 5;
9078                         if (skip_ret) {
9079                                 g_assert (*ip == CEE_RET);
9080                                 ip += 1;
9081                         }
9082                         ins_flag = 0;
9083                         constrained_class = NULL;
9084                         if (need_seq_point)
9085                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9086                         break;
9087                 }
9088                 case CEE_RET:
9089                         if (cfg->method != method) {
9090                                 /* return from inlined method */
9091                                 /*
9092                                  * If in_count == 0, that means the ret is unreachable due to
9093                                  * being preceeded by a throw. In that case, inline_method () will
9094                                  * handle setting the return value
9095                                  * (test case: test_0_inline_throw ()).
9096                                  */
9097                                 if (return_var && cfg->cbb->in_count) {
9098                                         MonoType *ret_type = mono_method_signature (method)->ret;
9099
9100                                         MonoInst *store;
9101                                         CHECK_STACK (1);
9102                                         --sp;
9103
9104                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9105                                                 UNVERIFIED;
9106
9107                                         //g_assert (returnvar != -1);
9108                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
9109                                         cfg->ret_var_set = TRUE;
9110                                 }
9111                         } else {
9112                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
9113
9114                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
9115                                         emit_pop_lmf (cfg);
9116
9117                                 if (cfg->ret) {
9118                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
9119
9120                                         if (seq_points && !sym_seq_points) {
9121                                                 /*
9122                                                  * Place a seq point here too even through the IL stack is not
9123                                                  * empty, so a step over on
9124                                                  * call <FOO>
9125                                                  * ret
9126                                                  * will work correctly.
9127                                                  */
9128                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
9129                                                 MONO_ADD_INS (cfg->cbb, ins);
9130                                         }
9131
9132                                         g_assert (!return_var);
9133                                         CHECK_STACK (1);
9134                                         --sp;
9135
9136                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
9137                                                 UNVERIFIED;
9138
9139                                         emit_setret (cfg, *sp);
9140                                 }
9141                         }
9142                         if (sp != stack_start)
9143                                 UNVERIFIED;
9144                         MONO_INST_NEW (cfg, ins, OP_BR);
9145                         ip++;
9146                         ins->inst_target_bb = end_bblock;
9147                         MONO_ADD_INS (cfg->cbb, ins);
9148                         link_bblock (cfg, cfg->cbb, end_bblock);
9149                         start_new_bblock = 1;
9150                         break;
9151                 case CEE_BR_S:
9152                         CHECK_OPSIZE (2);
9153                         MONO_INST_NEW (cfg, ins, OP_BR);
9154                         ip++;
9155                         target = ip + 1 + (signed char)(*ip);
9156                         ++ip;
9157                         GET_BBLOCK (cfg, tblock, target);
9158                         link_bblock (cfg, cfg->cbb, tblock);
9159                         ins->inst_target_bb = tblock;
9160                         if (sp != stack_start) {
9161                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9162                                 sp = stack_start;
9163                                 CHECK_UNVERIFIABLE (cfg);
9164                         }
9165                         MONO_ADD_INS (cfg->cbb, ins);
9166                         start_new_bblock = 1;
9167                         inline_costs += BRANCH_COST;
9168                         break;
9169                 case CEE_BEQ_S:
9170                 case CEE_BGE_S:
9171                 case CEE_BGT_S:
9172                 case CEE_BLE_S:
9173                 case CEE_BLT_S:
9174                 case CEE_BNE_UN_S:
9175                 case CEE_BGE_UN_S:
9176                 case CEE_BGT_UN_S:
9177                 case CEE_BLE_UN_S:
9178                 case CEE_BLT_UN_S:
9179                         CHECK_OPSIZE (2);
9180                         CHECK_STACK (2);
9181                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
9182                         ip++;
9183                         target = ip + 1 + *(signed char*)ip;
9184                         ip++;
9185
9186                         ADD_BINCOND (NULL);
9187
9188                         sp = stack_start;
9189                         inline_costs += BRANCH_COST;
9190                         break;
9191                 case CEE_BR:
9192                         CHECK_OPSIZE (5);
9193                         MONO_INST_NEW (cfg, ins, OP_BR);
9194                         ip++;
9195
9196                         target = ip + 4 + (gint32)read32(ip);
9197                         ip += 4;
9198                         GET_BBLOCK (cfg, tblock, target);
9199                         link_bblock (cfg, cfg->cbb, tblock);
9200                         ins->inst_target_bb = tblock;
9201                         if (sp != stack_start) {
9202                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9203                                 sp = stack_start;
9204                                 CHECK_UNVERIFIABLE (cfg);
9205                         }
9206
9207                         MONO_ADD_INS (cfg->cbb, ins);
9208
9209                         start_new_bblock = 1;
9210                         inline_costs += BRANCH_COST;
9211                         break;
9212                 case CEE_BRFALSE_S:
9213                 case CEE_BRTRUE_S:
9214                 case CEE_BRFALSE:
9215                 case CEE_BRTRUE: {
9216                         MonoInst *cmp;
9217                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
9218                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
9219                         guint32 opsize = is_short ? 1 : 4;
9220
9221                         CHECK_OPSIZE (opsize);
9222                         CHECK_STACK (1);
9223                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
9224                                 UNVERIFIED;
9225                         ip ++;
9226                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
9227                         ip += opsize;
9228
9229                         sp--;
9230
9231                         GET_BBLOCK (cfg, tblock, target);
9232                         link_bblock (cfg, cfg->cbb, tblock);
9233                         GET_BBLOCK (cfg, tblock, ip);
9234                         link_bblock (cfg, cfg->cbb, tblock);
9235
9236                         if (sp != stack_start) {
9237                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9238                                 CHECK_UNVERIFIABLE (cfg);
9239                         }
9240
9241                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
9242                         cmp->sreg1 = sp [0]->dreg;
9243                         type_from_op (cfg, cmp, sp [0], NULL);
9244                         CHECK_TYPE (cmp);
9245
9246 #if SIZEOF_REGISTER == 4
9247                         if (cmp->opcode == OP_LCOMPARE_IMM) {
9248                                 /* Convert it to OP_LCOMPARE */
9249                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
9250                                 ins->type = STACK_I8;
9251                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
9252                                 ins->inst_l = 0;
9253                                 MONO_ADD_INS (cfg->cbb, ins);
9254                                 cmp->opcode = OP_LCOMPARE;
9255                                 cmp->sreg2 = ins->dreg;
9256                         }
9257 #endif
9258                         MONO_ADD_INS (cfg->cbb, cmp);
9259
9260                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
9261                         type_from_op (cfg, ins, sp [0], NULL);
9262                         MONO_ADD_INS (cfg->cbb, ins);
9263                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
9264                         GET_BBLOCK (cfg, tblock, target);
9265                         ins->inst_true_bb = tblock;
9266                         GET_BBLOCK (cfg, tblock, ip);
9267                         ins->inst_false_bb = tblock;
9268                         start_new_bblock = 2;
9269
9270                         sp = stack_start;
9271                         inline_costs += BRANCH_COST;
9272                         break;
9273                 }
9274                 case CEE_BEQ:
9275                 case CEE_BGE:
9276                 case CEE_BGT:
9277                 case CEE_BLE:
9278                 case CEE_BLT:
9279                 case CEE_BNE_UN:
9280                 case CEE_BGE_UN:
9281                 case CEE_BGT_UN:
9282                 case CEE_BLE_UN:
9283                 case CEE_BLT_UN:
9284                         CHECK_OPSIZE (5);
9285                         CHECK_STACK (2);
9286                         MONO_INST_NEW (cfg, ins, *ip);
9287                         ip++;
9288                         target = ip + 4 + (gint32)read32(ip);
9289                         ip += 4;
9290
9291                         ADD_BINCOND (NULL);
9292
9293                         sp = stack_start;
9294                         inline_costs += BRANCH_COST;
9295                         break;
9296                 case CEE_SWITCH: {
9297                         MonoInst *src1;
9298                         MonoBasicBlock **targets;
9299                         MonoBasicBlock *default_bblock;
9300                         MonoJumpInfoBBTable *table;
9301                         int offset_reg = alloc_preg (cfg);
9302                         int target_reg = alloc_preg (cfg);
9303                         int table_reg = alloc_preg (cfg);
9304                         int sum_reg = alloc_preg (cfg);
9305                         gboolean use_op_switch;
9306
9307                         CHECK_OPSIZE (5);
9308                         CHECK_STACK (1);
9309                         n = read32 (ip + 1);
9310                         --sp;
9311                         src1 = sp [0];
9312                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
9313                                 UNVERIFIED;
9314
9315                         ip += 5;
9316                         CHECK_OPSIZE (n * sizeof (guint32));
9317                         target = ip + n * sizeof (guint32);
9318
9319                         GET_BBLOCK (cfg, default_bblock, target);
9320                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
9321
9322                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
9323                         for (i = 0; i < n; ++i) {
9324                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
9325                                 targets [i] = tblock;
9326                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
9327                                 ip += 4;
9328                         }
9329
9330                         if (sp != stack_start) {
9331                                 /*
9332                                  * Link the current bb with the targets as well, so handle_stack_args
9333                                  * will set their in_stack correctly.
9334                                  */
9335                                 link_bblock (cfg, cfg->cbb, default_bblock);
9336                                 for (i = 0; i < n; ++i)
9337                                         link_bblock (cfg, cfg->cbb, targets [i]);
9338
9339                                 handle_stack_args (cfg, stack_start, sp - stack_start);
9340                                 sp = stack_start;
9341                                 CHECK_UNVERIFIABLE (cfg);
9342
9343                                 /* Undo the links */
9344                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
9345                                 for (i = 0; i < n; ++i)
9346                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
9347                         }
9348
9349                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
9350                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
9351
9352                         for (i = 0; i < n; ++i)
9353                                 link_bblock (cfg, cfg->cbb, targets [i]);
9354
9355                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
9356                         table->table = targets;
9357                         table->table_size = n;
9358
9359                         use_op_switch = FALSE;
9360 #ifdef TARGET_ARM
9361                         /* ARM implements SWITCH statements differently */
9362                         /* FIXME: Make it use the generic implementation */
9363                         if (!cfg->compile_aot)
9364                                 use_op_switch = TRUE;
9365 #endif
9366
9367                         if (COMPILE_LLVM (cfg))
9368                                 use_op_switch = TRUE;
9369
9370                         cfg->cbb->has_jump_table = 1;
9371
9372                         if (use_op_switch) {
9373                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
9374                                 ins->sreg1 = src1->dreg;
9375                                 ins->inst_p0 = table;
9376                                 ins->inst_many_bb = targets;
9377                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
9378                                 MONO_ADD_INS (cfg->cbb, ins);
9379                         } else {
9380                                 if (sizeof (gpointer) == 8)
9381                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
9382                                 else
9383                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
9384
9385 #if SIZEOF_REGISTER == 8
9386                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
9387                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
9388 #endif
9389
9390                                 if (cfg->compile_aot) {
9391                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
9392                                 } else {
9393                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
9394                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
9395                                         ins->inst_p0 = table;
9396                                         ins->dreg = table_reg;
9397                                         MONO_ADD_INS (cfg->cbb, ins);
9398                                 }
9399
9400                                 /* FIXME: Use load_memindex */
9401                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
9402                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
9403                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
9404                         }
9405                         start_new_bblock = 1;
9406                         inline_costs += (BRANCH_COST * 2);
9407                         break;
9408                 }
9409                 case CEE_LDIND_I1:
9410                 case CEE_LDIND_U1:
9411                 case CEE_LDIND_I2:
9412                 case CEE_LDIND_U2:
9413                 case CEE_LDIND_I4:
9414                 case CEE_LDIND_U4:
9415                 case CEE_LDIND_I8:
9416                 case CEE_LDIND_I:
9417                 case CEE_LDIND_R4:
9418                 case CEE_LDIND_R8:
9419                 case CEE_LDIND_REF:
9420                         CHECK_STACK (1);
9421                         --sp;
9422
9423                         ins = mini_emit_memory_load (cfg, &ldind_to_type (*ip)->byval_arg, sp [0], 0, ins_flag);
9424                         *sp++ = ins;
9425                         ins_flag = 0;
9426                         ++ip;
9427                         break;
9428                 case CEE_STIND_REF:
9429                 case CEE_STIND_I1:
9430                 case CEE_STIND_I2:
9431                 case CEE_STIND_I4:
9432                 case CEE_STIND_I8:
9433                 case CEE_STIND_R4:
9434                 case CEE_STIND_R8:
9435                 case CEE_STIND_I:
9436                         CHECK_STACK (2);
9437                         sp -= 2;
9438
9439                         if (ins_flag & MONO_INST_VOLATILE) {
9440                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
9441                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
9442                         }
9443
9444                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
9445                         ins->flags |= ins_flag;
9446                         ins_flag = 0;
9447
9448                         MONO_ADD_INS (cfg->cbb, ins);
9449
9450                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !MONO_INS_IS_PCONST_NULL (sp [1]))
9451                                 mini_emit_write_barrier (cfg, sp [0], sp [1]);
9452
9453                         inline_costs += 1;
9454                         ++ip;
9455                         break;
9456
9457                 case CEE_MUL:
9458                         CHECK_STACK (2);
9459
9460                         MONO_INST_NEW (cfg, ins, (*ip));
9461                         sp -= 2;
9462                         ins->sreg1 = sp [0]->dreg;
9463                         ins->sreg2 = sp [1]->dreg;
9464                         type_from_op (cfg, ins, sp [0], sp [1]);
9465                         CHECK_TYPE (ins);
9466                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9467
9468                         /* Use the immediate opcodes if possible */
9469                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
9470                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9471                                 if (imm_opcode != -1) {
9472                                         ins->opcode = imm_opcode;
9473                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
9474                                         ins->sreg2 = -1;
9475
9476                                         NULLIFY_INS (sp [1]);
9477                                 }
9478                         }
9479
9480                         MONO_ADD_INS ((cfg)->cbb, (ins));
9481
9482                         *sp++ = mono_decompose_opcode (cfg, ins);
9483                         ip++;
9484                         break;
9485                 case CEE_ADD:
9486                 case CEE_SUB:
9487                 case CEE_DIV:
9488                 case CEE_DIV_UN:
9489                 case CEE_REM:
9490                 case CEE_REM_UN:
9491                 case CEE_AND:
9492                 case CEE_OR:
9493                 case CEE_XOR:
9494                 case CEE_SHL:
9495                 case CEE_SHR:
9496                 case CEE_SHR_UN:
9497                         CHECK_STACK (2);
9498
9499                         MONO_INST_NEW (cfg, ins, (*ip));
9500                         sp -= 2;
9501                         ins->sreg1 = sp [0]->dreg;
9502                         ins->sreg2 = sp [1]->dreg;
9503                         type_from_op (cfg, ins, sp [0], sp [1]);
9504                         CHECK_TYPE (ins);
9505                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
9506                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
9507
9508                         /* FIXME: Pass opcode to is_inst_imm */
9509
9510                         /* Use the immediate opcodes if possible */
9511                         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)) {
9512                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
9513                                 if (imm_opcode != -1) {
9514                                         ins->opcode = imm_opcode;
9515                                         if (sp [1]->opcode == OP_I8CONST) {
9516 #if SIZEOF_REGISTER == 8
9517                                                 ins->inst_imm = sp [1]->inst_l;
9518 #else
9519                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
9520                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
9521 #endif
9522                                         }
9523                                         else
9524                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
9525                                         ins->sreg2 = -1;
9526
9527                                         /* Might be followed by an instruction added by add_widen_op */
9528                                         if (sp [1]->next == NULL)
9529                                                 NULLIFY_INS (sp [1]);
9530                                 }
9531                         }
9532                         MONO_ADD_INS ((cfg)->cbb, (ins));
9533
9534                         *sp++ = mono_decompose_opcode (cfg, ins);
9535                         ip++;
9536                         break;
9537                 case CEE_NEG:
9538                 case CEE_NOT:
9539                 case CEE_CONV_I1:
9540                 case CEE_CONV_I2:
9541                 case CEE_CONV_I4:
9542                 case CEE_CONV_R4:
9543                 case CEE_CONV_R8:
9544                 case CEE_CONV_U4:
9545                 case CEE_CONV_I8:
9546                 case CEE_CONV_U8:
9547                 case CEE_CONV_OVF_I8:
9548                 case CEE_CONV_OVF_U8:
9549                 case CEE_CONV_R_UN:
9550                         CHECK_STACK (1);
9551
9552                         /* Special case this earlier so we have long constants in the IR */
9553                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
9554                                 int data = sp [-1]->inst_c0;
9555                                 sp [-1]->opcode = OP_I8CONST;
9556                                 sp [-1]->type = STACK_I8;
9557 #if SIZEOF_REGISTER == 8
9558                                 if ((*ip) == CEE_CONV_U8)
9559                                         sp [-1]->inst_c0 = (guint32)data;
9560                                 else
9561                                         sp [-1]->inst_c0 = data;
9562 #else
9563                                 sp [-1]->inst_ls_word = data;
9564                                 if ((*ip) == CEE_CONV_U8)
9565                                         sp [-1]->inst_ms_word = 0;
9566                                 else
9567                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
9568 #endif
9569                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
9570                         }
9571                         else {
9572                                 ADD_UNOP (*ip);
9573                         }
9574                         ip++;
9575                         break;
9576                 case CEE_CONV_OVF_I4:
9577                 case CEE_CONV_OVF_I1:
9578                 case CEE_CONV_OVF_I2:
9579                 case CEE_CONV_OVF_I:
9580                 case CEE_CONV_OVF_U:
9581                         CHECK_STACK (1);
9582
9583                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9584                                 ADD_UNOP (CEE_CONV_OVF_I8);
9585                                 ADD_UNOP (*ip);
9586                         } else {
9587                                 ADD_UNOP (*ip);
9588                         }
9589                         ip++;
9590                         break;
9591                 case CEE_CONV_OVF_U1:
9592                 case CEE_CONV_OVF_U2:
9593                 case CEE_CONV_OVF_U4:
9594                         CHECK_STACK (1);
9595
9596                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
9597                                 ADD_UNOP (CEE_CONV_OVF_U8);
9598                                 ADD_UNOP (*ip);
9599                         } else {
9600                                 ADD_UNOP (*ip);
9601                         }
9602                         ip++;
9603                         break;
9604                 case CEE_CONV_OVF_I1_UN:
9605                 case CEE_CONV_OVF_I2_UN:
9606                 case CEE_CONV_OVF_I4_UN:
9607                 case CEE_CONV_OVF_I8_UN:
9608                 case CEE_CONV_OVF_U1_UN:
9609                 case CEE_CONV_OVF_U2_UN:
9610                 case CEE_CONV_OVF_U4_UN:
9611                 case CEE_CONV_OVF_U8_UN:
9612                 case CEE_CONV_OVF_I_UN:
9613                 case CEE_CONV_OVF_U_UN:
9614                 case CEE_CONV_U2:
9615                 case CEE_CONV_U1:
9616                 case CEE_CONV_I:
9617                 case CEE_CONV_U:
9618                         CHECK_STACK (1);
9619                         ADD_UNOP (*ip);
9620                         CHECK_CFG_EXCEPTION;
9621                         ip++;
9622                         break;
9623                 case CEE_ADD_OVF:
9624                 case CEE_ADD_OVF_UN:
9625                 case CEE_MUL_OVF:
9626                 case CEE_MUL_OVF_UN:
9627                 case CEE_SUB_OVF:
9628                 case CEE_SUB_OVF_UN:
9629                         CHECK_STACK (2);
9630                         ADD_BINOP (*ip);
9631                         ip++;
9632                         break;
9633                 case CEE_CPOBJ:
9634                         GSHAREDVT_FAILURE (*ip);
9635                         CHECK_OPSIZE (5);
9636                         CHECK_STACK (2);
9637                         token = read32 (ip + 1);
9638                         klass = mini_get_class (method, token, generic_context);
9639                         CHECK_TYPELOAD (klass);
9640                         sp -= 2;
9641                         mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9642                         ins_flag = 0;
9643                         ip += 5;
9644                         break;
9645                 case CEE_LDOBJ: {
9646                         int loc_index = -1;
9647                         int stloc_len = 0;
9648
9649                         CHECK_OPSIZE (5);
9650                         CHECK_STACK (1);
9651                         --sp;
9652                         token = read32 (ip + 1);
9653                         klass = mini_get_class (method, token, generic_context);
9654                         CHECK_TYPELOAD (klass);
9655
9656                         /* Optimize the common ldobj+stloc combination */
9657                         switch (ip [5]) {
9658                         case CEE_STLOC_S:
9659                                 loc_index = ip [6];
9660                                 stloc_len = 2;
9661                                 break;
9662                         case CEE_STLOC_0:
9663                         case CEE_STLOC_1:
9664                         case CEE_STLOC_2:
9665                         case CEE_STLOC_3:
9666                                 loc_index = ip [5] - CEE_STLOC_0;
9667                                 stloc_len = 1;
9668                                 break;
9669                         default:
9670                                 break;
9671                         }
9672
9673                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
9674                                 CHECK_LOCAL (loc_index);
9675
9676                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
9677                                 ins->dreg = cfg->locals [loc_index]->dreg;
9678                                 ins->flags |= ins_flag;
9679                                 ip += 5;
9680                                 ip += stloc_len;
9681                                 if (ins_flag & MONO_INST_VOLATILE) {
9682                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
9683                                         mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
9684                                 }
9685                                 ins_flag = 0;
9686                                 break;
9687                         }
9688
9689                         /* Optimize the ldobj+stobj combination */
9690                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token)) {
9691                                 CHECK_STACK (1);
9692
9693                                 sp --;
9694
9695                                 mini_emit_memory_copy (cfg, sp [0], sp [1], klass, FALSE, ins_flag);
9696
9697                                 ip += 5 + 5;
9698                                 ins_flag = 0;
9699                                 break;
9700                         }
9701
9702                         ins = mini_emit_memory_load (cfg, &klass->byval_arg, sp [0], 0, ins_flag);
9703                         *sp++ = ins;
9704
9705                         ip += 5;
9706                         ins_flag = 0;
9707                         inline_costs += 1;
9708                         break;
9709                 }
9710                 case CEE_LDSTR:
9711                         CHECK_STACK_OVF (1);
9712                         CHECK_OPSIZE (5);
9713                         n = read32 (ip + 1);
9714
9715                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
9716                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
9717                                 ins->type = STACK_OBJ;
9718                                 *sp = ins;
9719                         }
9720                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
9721                                 MonoInst *iargs [1];
9722                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
9723
9724                                 if (cfg->compile_aot)
9725                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
9726                                 else
9727                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
9728                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
9729                         } else {
9730                                 if (cfg->opt & MONO_OPT_SHARED) {
9731                                         MonoInst *iargs [3];
9732
9733                                         if (cfg->compile_aot) {
9734                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
9735                                         }
9736                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
9737                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
9738                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
9739                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
9740                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9741                                         CHECK_CFG_ERROR;
9742                                 } else {
9743                                         if (cfg->cbb->out_of_line) {
9744                                                 MonoInst *iargs [2];
9745
9746                                                 if (image == mono_defaults.corlib) {
9747                                                         /*
9748                                                          * Avoid relocations in AOT and save some space by using a
9749                                                          * version of helper_ldstr specialized to mscorlib.
9750                                                          */
9751                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
9752                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
9753                                                 } else {
9754                                                         /* Avoid creating the string object */
9755                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
9756                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
9757                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
9758                                                 }
9759                                         }
9760                                         else
9761                                         if (cfg->compile_aot) {
9762                                                 NEW_LDSTRCONST (cfg, ins, image, n);
9763                                                 *sp = ins;
9764                                                 MONO_ADD_INS (cfg->cbb, ins);
9765                                         }
9766                                         else {
9767                                                 NEW_PCONST (cfg, ins, NULL);
9768                                                 ins->type = STACK_OBJ;
9769                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
9770                                                 CHECK_CFG_ERROR;
9771
9772                                                 if (!ins->inst_p0)
9773                                                         OUT_OF_MEMORY_FAILURE;
9774
9775                                                 *sp = ins;
9776                                                 MONO_ADD_INS (cfg->cbb, ins);
9777                                         }
9778                                 }
9779                         }
9780
9781                         sp++;
9782                         ip += 5;
9783                         break;
9784                 case CEE_NEWOBJ: {
9785                         MonoInst *iargs [2];
9786                         MonoMethodSignature *fsig;
9787                         MonoInst this_ins;
9788                         MonoInst *alloc;
9789                         MonoInst *vtable_arg = NULL;
9790
9791                         CHECK_OPSIZE (5);
9792                         token = read32 (ip + 1);
9793                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9794                         CHECK_CFG_ERROR;
9795
9796                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9797                         CHECK_CFG_ERROR;
9798
9799                         mono_save_token_info (cfg, image, token, cmethod);
9800
9801                         if (!mono_class_init (cmethod->klass))
9802                                 TYPE_LOAD_ERROR (cmethod->klass);
9803
9804                         context_used = mini_method_check_context_used (cfg, cmethod);
9805
9806                         if (!dont_verify && !cfg->skip_visibility) {
9807                                 MonoMethod *cil_method = cmethod;
9808                                 MonoMethod *target_method = cil_method;
9809
9810                                 if (method->is_inflated) {
9811                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9812                                         CHECK_CFG_ERROR;
9813                                 }
9814
9815                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9816                                         !mono_method_can_access_method (method, cil_method))
9817                                         emit_method_access_failure (cfg, method, cil_method);
9818                         }
9819
9820                         if (mono_security_core_clr_enabled ())
9821                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
9822
9823                         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)) {
9824                                 emit_class_init (cfg, cmethod->klass);
9825                                 CHECK_TYPELOAD (cmethod->klass);
9826                         }
9827
9828                         /*
9829                         if (cfg->gsharedvt) {
9830                                 if (mini_is_gsharedvt_variable_signature (sig))
9831                                         GSHAREDVT_FAILURE (*ip);
9832                         }
9833                         */
9834
9835                         n = fsig->param_count;
9836                         CHECK_STACK (n);
9837
9838                         /*
9839                          * Generate smaller code for the common newobj <exception> instruction in
9840                          * argument checking code.
9841                          */
9842                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
9843                                 is_exception_class (cmethod->klass) && n <= 2 &&
9844                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
9845                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
9846                                 MonoInst *iargs [3];
9847
9848                                 sp -= n;
9849
9850                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
9851                                 switch (n) {
9852                                 case 0:
9853                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
9854                                         break;
9855                                 case 1:
9856                                         iargs [1] = sp [0];
9857                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
9858                                         break;
9859                                 case 2:
9860                                         iargs [1] = sp [0];
9861                                         iargs [2] = sp [1];
9862                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
9863                                         break;
9864                                 default:
9865                                         g_assert_not_reached ();
9866                                 }
9867
9868                                 ip += 5;
9869                                 inline_costs += 5;
9870                                 break;
9871                         }
9872
9873                         /* move the args to allow room for 'this' in the first position */
9874                         while (n--) {
9875                                 --sp;
9876                                 sp [1] = sp [0];
9877                         }
9878
9879                         /* check_call_signature () requires sp[0] to be set */
9880                         this_ins.type = STACK_OBJ;
9881                         sp [0] = &this_ins;
9882                         if (check_call_signature (cfg, fsig, sp))
9883                                 UNVERIFIED;
9884
9885                         iargs [0] = NULL;
9886
9887                         if (mini_class_is_system_array (cmethod->klass)) {
9888                                 *sp = emit_get_rgctx_method (cfg, context_used,
9889                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9890
9891                                 /* Avoid varargs in the common case */
9892                                 if (fsig->param_count == 1)
9893                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
9894                                 else if (fsig->param_count == 2)
9895                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
9896                                 else if (fsig->param_count == 3)
9897                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
9898                                 else if (fsig->param_count == 4)
9899                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
9900                                 else
9901                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
9902                         } else if (cmethod->string_ctor) {
9903                                 g_assert (!context_used);
9904                                 g_assert (!vtable_arg);
9905                                 /* we simply pass a null pointer */
9906                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
9907                                 /* now call the string ctor */
9908                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
9909                         } else {
9910                                 if (cmethod->klass->valuetype) {
9911                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
9912                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
9913                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
9914
9915                                         alloc = NULL;
9916
9917                                         /*
9918                                          * The code generated by mini_emit_virtual_call () expects
9919                                          * iargs [0] to be a boxed instance, but luckily the vcall
9920                                          * will be transformed into a normal call there.
9921                                          */
9922                                 } else if (context_used) {
9923                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
9924                                         *sp = alloc;
9925                                 } else {
9926                                         MonoVTable *vtable = NULL;
9927
9928                                         if (!cfg->compile_aot)
9929                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9930                                         CHECK_TYPELOAD (cmethod->klass);
9931
9932                                         /*
9933                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
9934                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
9935                                          * As a workaround, we call class cctors before allocating objects.
9936                                          */
9937                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
9938                                                 emit_class_init (cfg, cmethod->klass);
9939                                                 if (cfg->verbose_level > 2)
9940                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
9941                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
9942                                         }
9943
9944                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
9945                                         *sp = alloc;
9946                                 }
9947                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
9948
9949                                 if (alloc)
9950                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
9951
9952                                 /* Now call the actual ctor */
9953                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
9954                                 CHECK_CFG_EXCEPTION;
9955                         }
9956
9957                         if (alloc == NULL) {
9958                                 /* Valuetype */
9959                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
9960                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
9961                                 *sp++= ins;
9962                         } else {
9963                                 *sp++ = alloc;
9964                         }
9965
9966                         ip += 5;
9967                         inline_costs += 5;
9968                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
9969                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
9970                         break;
9971                 }
9972                 case CEE_CASTCLASS:
9973                 case CEE_ISINST: {
9974                         CHECK_STACK (1);
9975                         --sp;
9976                         CHECK_OPSIZE (5);
9977                         token = read32 (ip + 1);
9978                         klass = mini_get_class (method, token, generic_context);
9979                         CHECK_TYPELOAD (klass);
9980                         if (sp [0]->type != STACK_OBJ)
9981                                 UNVERIFIED;
9982
9983                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
9984                         ins->dreg = alloc_preg (cfg);
9985                         ins->sreg1 = (*sp)->dreg;
9986                         ins->klass = klass;
9987                         ins->type = STACK_OBJ;
9988                         MONO_ADD_INS (cfg->cbb, ins);
9989
9990                         CHECK_CFG_EXCEPTION;
9991                         *sp++ = ins;
9992                         ip += 5;
9993
9994                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
9995                         break;
9996                 }
9997                 case CEE_UNBOX_ANY: {
9998                         MonoInst *res, *addr;
9999
10000                         CHECK_STACK (1);
10001                         --sp;
10002                         CHECK_OPSIZE (5);
10003                         token = read32 (ip + 1);
10004                         klass = mini_get_class (method, token, generic_context);
10005                         CHECK_TYPELOAD (klass);
10006
10007                         mono_save_token_info (cfg, image, token, klass);
10008
10009                         context_used = mini_class_check_context_used (cfg, klass);
10010
10011                         if (mini_is_gsharedvt_klass (klass)) {
10012                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10013                                 inline_costs += 2;
10014                         } else if (generic_class_is_reference_type (cfg, klass)) {
10015                                 if (MONO_INS_IS_PCONST_NULL (*sp)) {
10016                                         EMIT_NEW_PCONST (cfg, res, NULL);
10017                                         res->type = STACK_OBJ;
10018                                 } else {
10019                                         MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10020                                         res->dreg = alloc_preg (cfg);
10021                                         res->sreg1 = (*sp)->dreg;
10022                                         res->klass = klass;
10023                                         res->type = STACK_OBJ;
10024                                         MONO_ADD_INS (cfg->cbb, res);
10025                                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10026                                 }
10027                         } else if (mono_class_is_nullable (klass)) {
10028                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10029                         } else {
10030                                 addr = handle_unbox (cfg, klass, sp, context_used);
10031                                 /* LDOBJ */
10032                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10033                                 res = ins;
10034                                 inline_costs += 2;
10035                         }
10036
10037                         *sp ++ = res;
10038                         ip += 5;
10039                         break;
10040                 }
10041                 case CEE_BOX: {
10042                         MonoInst *val;
10043                         MonoClass *enum_class;
10044                         MonoMethod *has_flag;
10045
10046                         CHECK_STACK (1);
10047                         --sp;
10048                         val = *sp;
10049                         CHECK_OPSIZE (5);
10050                         token = read32 (ip + 1);
10051                         klass = mini_get_class (method, token, generic_context);
10052                         CHECK_TYPELOAD (klass);
10053
10054                         mono_save_token_info (cfg, image, token, klass);
10055
10056                         context_used = mini_class_check_context_used (cfg, klass);
10057
10058                         if (generic_class_is_reference_type (cfg, klass)) {
10059                                 *sp++ = val;
10060                                 ip += 5;
10061                                 break;
10062                         }
10063
10064                         if (klass == mono_defaults.void_class)
10065                                 UNVERIFIED;
10066                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
10067                                 UNVERIFIED;
10068                         /* frequent check in generic code: box (struct), brtrue */
10069
10070                         /*
10071                          * Look for:
10072                          *
10073                          *   <push int/long ptr>
10074                          *   <push int/long>
10075                          *   box MyFlags
10076                          *   constrained. MyFlags
10077                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
10078                          *
10079                          * If we find this sequence and the operand types on box and constrained
10080                          * are equal, we can emit a specialized instruction sequence instead of
10081                          * the very slow HasFlag () call.
10082                          */
10083                         if ((cfg->opt & MONO_OPT_INTRINS) &&
10084                             /* Cheap checks first. */
10085                             ip + 5 + 6 + 5 < end &&
10086                             ip [5] == CEE_PREFIX1 &&
10087                             ip [6] == CEE_CONSTRAINED_ &&
10088                             ip [11] == CEE_CALLVIRT &&
10089                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
10090                             mono_class_is_enum (klass) &&
10091                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
10092                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
10093                             has_flag->klass == mono_defaults.enum_class &&
10094                             !strcmp (has_flag->name, "HasFlag") &&
10095                             has_flag->signature->hasthis &&
10096                             has_flag->signature->param_count == 1) {
10097                                 CHECK_TYPELOAD (enum_class);
10098
10099                                 if (enum_class == klass) {
10100                                         MonoInst *enum_this, *enum_flag;
10101
10102                                         ip += 5 + 6 + 5;
10103                                         --sp;
10104
10105                                         enum_this = sp [0];
10106                                         enum_flag = sp [1];
10107
10108                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
10109                                         break;
10110                                 }
10111                         }
10112
10113                         // FIXME: LLVM can't handle the inconsistent bb linking
10114                         if (!mono_class_is_nullable (klass) &&
10115                                 !mini_is_gsharedvt_klass (klass) &&
10116                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
10117                                 (ip [5] == CEE_BRTRUE ||
10118                                  ip [5] == CEE_BRTRUE_S ||
10119                                  ip [5] == CEE_BRFALSE ||
10120                                  ip [5] == CEE_BRFALSE_S)) {
10121                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
10122                                 int dreg;
10123                                 MonoBasicBlock *true_bb, *false_bb;
10124
10125                                 ip += 5;
10126
10127                                 if (cfg->verbose_level > 3) {
10128                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10129                                         printf ("<box+brtrue opt>\n");
10130                                 }
10131
10132                                 switch (*ip) {
10133                                 case CEE_BRTRUE_S:
10134                                 case CEE_BRFALSE_S:
10135                                         CHECK_OPSIZE (2);
10136                                         ip++;
10137                                         target = ip + 1 + (signed char)(*ip);
10138                                         ip++;
10139                                         break;
10140                                 case CEE_BRTRUE:
10141                                 case CEE_BRFALSE:
10142                                         CHECK_OPSIZE (5);
10143                                         ip++;
10144                                         target = ip + 4 + (gint)(read32 (ip));
10145                                         ip += 4;
10146                                         break;
10147                                 default:
10148                                         g_assert_not_reached ();
10149                                 }
10150
10151                                 /*
10152                                  * We need to link both bblocks, since it is needed for handling stack
10153                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
10154                                  * Branching to only one of them would lead to inconsistencies, so
10155                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
10156                                  */
10157                                 GET_BBLOCK (cfg, true_bb, target);
10158                                 GET_BBLOCK (cfg, false_bb, ip);
10159
10160                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
10161                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
10162
10163                                 if (sp != stack_start) {
10164                                         handle_stack_args (cfg, stack_start, sp - stack_start);
10165                                         sp = stack_start;
10166                                         CHECK_UNVERIFIABLE (cfg);
10167                                 }
10168
10169                                 if (COMPILE_LLVM (cfg)) {
10170                                         dreg = alloc_ireg (cfg);
10171                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
10172                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
10173
10174                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
10175                                 } else {
10176                                         /* The JIT can't eliminate the iconst+compare */
10177                                         MONO_INST_NEW (cfg, ins, OP_BR);
10178                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
10179                                         MONO_ADD_INS (cfg->cbb, ins);
10180                                 }
10181
10182                                 start_new_bblock = 1;
10183                                 break;
10184                         }
10185
10186                         *sp++ = handle_box (cfg, val, klass, context_used);
10187
10188                         CHECK_CFG_EXCEPTION;
10189                         ip += 5;
10190                         inline_costs += 1;
10191                         break;
10192                 }
10193                 case CEE_UNBOX: {
10194                         CHECK_STACK (1);
10195                         --sp;
10196                         CHECK_OPSIZE (5);
10197                         token = read32 (ip + 1);
10198                         klass = mini_get_class (method, token, generic_context);
10199                         CHECK_TYPELOAD (klass);
10200
10201                         mono_save_token_info (cfg, image, token, klass);
10202
10203                         context_used = mini_class_check_context_used (cfg, klass);
10204
10205                         if (mono_class_is_nullable (klass)) {
10206                                 MonoInst *val;
10207
10208                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
10209                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
10210
10211                                 *sp++= ins;
10212                         } else {
10213                                 ins = handle_unbox (cfg, klass, sp, context_used);
10214                                 *sp++ = ins;
10215                         }
10216                         ip += 5;
10217                         inline_costs += 2;
10218                         break;
10219                 }
10220                 case CEE_LDFLD:
10221                 case CEE_LDFLDA:
10222                 case CEE_STFLD:
10223                 case CEE_LDSFLD:
10224                 case CEE_LDSFLDA:
10225                 case CEE_STSFLD: {
10226                         MonoClassField *field;
10227 #ifndef DISABLE_REMOTING
10228                         int costs;
10229 #endif
10230                         guint foffset;
10231                         gboolean is_instance;
10232                         int op;
10233                         gpointer addr = NULL;
10234                         gboolean is_special_static;
10235                         MonoType *ftype;
10236                         MonoInst *store_val = NULL;
10237                         MonoInst *thread_ins;
10238
10239                         op = *ip;
10240                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
10241                         if (is_instance) {
10242                                 if (op == CEE_STFLD) {
10243                                         CHECK_STACK (2);
10244                                         sp -= 2;
10245                                         store_val = sp [1];
10246                                 } else {
10247                                         CHECK_STACK (1);
10248                                         --sp;
10249                                 }
10250                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
10251                                         UNVERIFIED;
10252                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
10253                                         UNVERIFIED;
10254                         } else {
10255                                 if (op == CEE_STSFLD) {
10256                                         CHECK_STACK (1);
10257                                         sp--;
10258                                         store_val = sp [0];
10259                                 }
10260                         }
10261
10262                         CHECK_OPSIZE (5);
10263                         token = read32 (ip + 1);
10264                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
10265                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
10266                                 klass = field->parent;
10267                         }
10268                         else {
10269                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
10270                                 CHECK_CFG_ERROR;
10271                         }
10272                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
10273                                 FIELD_ACCESS_FAILURE (method, field);
10274                         mono_class_init (klass);
10275
10276                         /* if the class is Critical then transparent code cannot access it's fields */
10277                         if (!is_instance && mono_security_core_clr_enabled ())
10278                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10279
10280                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
10281                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
10282                         if (mono_security_core_clr_enabled ())
10283                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
10284                         */
10285
10286                         ftype = mono_field_get_type (field);
10287
10288                         /*
10289                          * LDFLD etc. is usable on static fields as well, so convert those cases to
10290                          * the static case.
10291                          */
10292                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
10293                                 switch (op) {
10294                                 case CEE_LDFLD:
10295                                         op = CEE_LDSFLD;
10296                                         break;
10297                                 case CEE_STFLD:
10298                                         op = CEE_STSFLD;
10299                                         break;
10300                                 case CEE_LDFLDA:
10301                                         op = CEE_LDSFLDA;
10302                                         break;
10303                                 default:
10304                                         g_assert_not_reached ();
10305                                 }
10306                                 is_instance = FALSE;
10307                         }
10308
10309                         context_used = mini_class_check_context_used (cfg, klass);
10310
10311                         /* INSTANCE CASE */
10312
10313                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
10314                         if (op == CEE_STFLD) {
10315                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
10316                                         UNVERIFIED;
10317 #ifndef DISABLE_REMOTING
10318                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
10319                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
10320                                         MonoInst *iargs [5];
10321
10322                                         GSHAREDVT_FAILURE (op);
10323
10324                                         iargs [0] = sp [0];
10325                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10326                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10327                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
10328                                                     field->offset);
10329                                         iargs [4] = sp [1];
10330
10331                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10332                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
10333                                                                                            iargs, ip, cfg->real_offset, TRUE);
10334                                                 CHECK_CFG_EXCEPTION;
10335                                                 g_assert (costs > 0);
10336
10337                                                 cfg->real_offset += 5;
10338
10339                                                 inline_costs += costs;
10340                                         } else {
10341                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
10342                                         }
10343                                 } else
10344 #endif
10345                                 {
10346                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
10347
10348                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10349
10350                                         if (ins_flag & MONO_INST_VOLATILE) {
10351                                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10352                                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10353                                         }
10354
10355                                         if (mini_is_gsharedvt_klass (klass)) {
10356                                                 MonoInst *offset_ins;
10357
10358                                                 context_used = mini_class_check_context_used (cfg, klass);
10359
10360                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10361                                                 /* The value is offset by 1 */
10362                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10363                                                 dreg = alloc_ireg_mp (cfg);
10364                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10365                                                 wbarrier_ptr_ins = ins;
10366                                                 /* The decomposition will call mini_emit_memory_copy () which will emit a wbarrier if needed */
10367                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
10368                                         } else {
10369                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
10370                                         }
10371                                         if (sp [0]->opcode != OP_LDADDR)
10372                                                 store->flags |= MONO_INST_FAULT;
10373
10374                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !MONO_INS_IS_PCONST_NULL (sp [1])) {
10375                                                 if (mini_is_gsharedvt_klass (klass)) {
10376                                                         g_assert (wbarrier_ptr_ins);
10377                                                         mini_emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
10378                                                 } else {
10379                                                         /* insert call to write barrier */
10380                                                         MonoInst *ptr;
10381                                                         int dreg;
10382
10383                                                         dreg = alloc_ireg_mp (cfg);
10384                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10385                                                         mini_emit_write_barrier (cfg, ptr, sp [1]);
10386                                                 }
10387                                         }
10388
10389                                         store->flags |= ins_flag;
10390                                 }
10391                                 ins_flag = 0;
10392                                 ip += 5;
10393                                 break;
10394                         }
10395
10396 #ifndef DISABLE_REMOTING
10397                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
10398                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
10399                                 MonoInst *iargs [4];
10400
10401                                 GSHAREDVT_FAILURE (op);
10402
10403                                 iargs [0] = sp [0];
10404                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10405                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
10406                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
10407                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
10408                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
10409                                                                                    iargs, ip, cfg->real_offset, TRUE);
10410                                         CHECK_CFG_EXCEPTION;
10411                                         g_assert (costs > 0);
10412
10413                                         cfg->real_offset += 5;
10414
10415                                         *sp++ = iargs [0];
10416
10417                                         inline_costs += costs;
10418                                 } else {
10419                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
10420                                         *sp++ = ins;
10421                                 }
10422                         } else
10423 #endif
10424                         if (is_instance) {
10425                                 if (sp [0]->type == STACK_VTYPE) {
10426                                         MonoInst *var;
10427
10428                                         /* Have to compute the address of the variable */
10429
10430                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
10431                                         if (!var)
10432                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
10433                                         else
10434                                                 g_assert (var->klass == klass);
10435
10436                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
10437                                         sp [0] = ins;
10438                                 }
10439
10440                                 if (op == CEE_LDFLDA) {
10441                                         if (sp [0]->type == STACK_OBJ) {
10442                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
10443                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
10444                                         }
10445
10446                                         dreg = alloc_ireg_mp (cfg);
10447
10448                                         if (mini_is_gsharedvt_klass (klass)) {
10449                                                 MonoInst *offset_ins;
10450
10451                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10452                                                 /* The value is offset by 1 */
10453                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10454                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
10455                                         } else {
10456                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
10457                                         }
10458                                         ins->klass = mono_class_from_mono_type (field->type);
10459                                         ins->type = STACK_MP;
10460                                         *sp++ = ins;
10461                                 } else {
10462                                         MonoInst *load;
10463
10464                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
10465
10466                                         if (sp [0]->opcode == OP_LDADDR && klass->simd_type && cfg->opt & MONO_OPT_SIMD) {
10467                                                 ins = mono_emit_simd_field_load (cfg, field, sp [0]);
10468                                                 if (ins) {
10469                                                         *sp++ = ins;
10470                                                         ins_flag = 0;
10471                                                         ip += 5;
10472                                                         break;
10473                                                 }
10474                                         }
10475
10476                                         MonoInst *field_add_inst = sp [0];
10477                                         if (mini_is_gsharedvt_klass (klass)) {
10478                                                 MonoInst *offset_ins;
10479
10480                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10481                                                 /* The value is offset by 1 */
10482                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10483                                                 EMIT_NEW_BIALU (cfg, field_add_inst, OP_PADD, alloc_ireg_mp (cfg), sp [0]->dreg, offset_ins->dreg);
10484                                                 foffset = 0;
10485                                         }
10486
10487                                         load = mini_emit_memory_load (cfg, field->type, field_add_inst, foffset, ins_flag);
10488
10489                                         if (sp [0]->opcode != OP_LDADDR)
10490                                                 load->flags |= MONO_INST_FAULT;
10491                                         *sp++ = load;
10492                                 }
10493                         }
10494
10495                         if (is_instance) {
10496                                 ins_flag = 0;
10497                                 ip += 5;
10498                                 break;
10499                         }
10500
10501                         /* STATIC CASE */
10502                         context_used = mini_class_check_context_used (cfg, klass);
10503
10504                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
10505                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
10506                                 CHECK_CFG_ERROR;
10507                         }
10508
10509                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
10510                          * to be called here.
10511                          */
10512                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
10513                                 mono_class_vtable (cfg->domain, klass);
10514                                 CHECK_TYPELOAD (klass);
10515                         }
10516                         mono_domain_lock (cfg->domain);
10517                         if (cfg->domain->special_static_fields)
10518                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
10519                         mono_domain_unlock (cfg->domain);
10520
10521                         is_special_static = mono_class_field_is_special_static (field);
10522
10523                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
10524                                 thread_ins = mono_create_tls_get (cfg, TLS_KEY_THREAD);
10525                         else
10526                                 thread_ins = NULL;
10527
10528                         /* Generate IR to compute the field address */
10529                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
10530                                 /*
10531                                  * Fast access to TLS data
10532                                  * Inline version of get_thread_static_data () in
10533                                  * threads.c.
10534                                  */
10535                                 guint32 offset;
10536                                 int idx, static_data_reg, array_reg, dreg;
10537
10538                                 if (context_used && cfg->gsharedvt && mini_is_gsharedvt_klass (klass))
10539                                         GSHAREDVT_FAILURE (op);
10540
10541                                 static_data_reg = alloc_ireg (cfg);
10542                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
10543
10544                                 if (cfg->compile_aot) {
10545                                         int offset_reg, offset2_reg, idx_reg;
10546
10547                                         /* For TLS variables, this will return the TLS offset */
10548                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
10549                                         offset_reg = ins->dreg;
10550                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
10551                                         idx_reg = alloc_ireg (cfg);
10552                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
10553                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
10554                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
10555                                         array_reg = alloc_ireg (cfg);
10556                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
10557                                         offset2_reg = alloc_ireg (cfg);
10558                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
10559                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
10560                                         dreg = alloc_ireg (cfg);
10561                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
10562                                 } else {
10563                                         offset = (gsize)addr & 0x7fffffff;
10564                                         idx = offset & 0x3f;
10565
10566                                         array_reg = alloc_ireg (cfg);
10567                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
10568                                         dreg = alloc_ireg (cfg);
10569                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
10570                                 }
10571                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
10572                                         (cfg->compile_aot && is_special_static) ||
10573                                         (context_used && is_special_static)) {
10574                                 MonoInst *iargs [2];
10575
10576                                 g_assert (field->parent);
10577                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10578                                 if (context_used) {
10579                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
10580                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
10581                                 } else {
10582                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10583                                 }
10584                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10585                         } else if (context_used) {
10586                                 MonoInst *static_data;
10587
10588                                 /*
10589                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
10590                                         method->klass->name_space, method->klass->name, method->name,
10591                                         depth, field->offset);
10592                                 */
10593
10594                                 if (mono_class_needs_cctor_run (klass, method))
10595                                         emit_class_init (cfg, klass);
10596
10597                                 /*
10598                                  * The pointer we're computing here is
10599                                  *
10600                                  *   super_info.static_data + field->offset
10601                                  */
10602                                 static_data = mini_emit_get_rgctx_klass (cfg, context_used,
10603                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
10604
10605                                 if (mini_is_gsharedvt_klass (klass)) {
10606                                         MonoInst *offset_ins;
10607
10608                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
10609                                         /* The value is offset by 1 */
10610                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
10611                                         dreg = alloc_ireg_mp (cfg);
10612                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
10613                                 } else if (field->offset == 0) {
10614                                         ins = static_data;
10615                                 } else {
10616                                         int addr_reg = mono_alloc_preg (cfg);
10617                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
10618                                 }
10619                         } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
10620                                 MonoInst *iargs [2];
10621
10622                                 g_assert (field->parent);
10623                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10624                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
10625                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
10626                         } else {
10627                                 MonoVTable *vtable = NULL;
10628
10629                                 if (!cfg->compile_aot)
10630                                         vtable = mono_class_vtable (cfg->domain, klass);
10631                                 CHECK_TYPELOAD (klass);
10632
10633                                 if (!addr) {
10634                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
10635                                                 if (!(g_slist_find (class_inits, klass))) {
10636                                                         emit_class_init (cfg, klass);
10637                                                         if (cfg->verbose_level > 2)
10638                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
10639                                                         class_inits = g_slist_prepend (class_inits, klass);
10640                                                 }
10641                                         } else {
10642                                                 if (cfg->run_cctors) {
10643                                                         /* This makes so that inline cannot trigger */
10644                                                         /* .cctors: too many apps depend on them */
10645                                                         /* running with a specific order... */
10646                                                         g_assert (vtable);
10647                                                         if (! vtable->initialized)
10648                                                                 INLINE_FAILURE ("class init");
10649                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
10650                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
10651                                                                 goto exception_exit;
10652                                                         }
10653                                                 }
10654                                         }
10655                                         if (cfg->compile_aot)
10656                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
10657                                         else {
10658                                                 g_assert (vtable);
10659                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10660                                                 g_assert (addr);
10661                                                 EMIT_NEW_PCONST (cfg, ins, addr);
10662                                         }
10663                                 } else {
10664                                         MonoInst *iargs [1];
10665                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
10666                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
10667                                 }
10668                         }
10669
10670                         /* Generate IR to do the actual load/store operation */
10671
10672                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10673                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10674                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10675                         }
10676
10677                         if (op == CEE_LDSFLDA) {
10678                                 ins->klass = mono_class_from_mono_type (ftype);
10679                                 ins->type = STACK_PTR;
10680                                 *sp++ = ins;
10681                         } else if (op == CEE_STSFLD) {
10682                                 MonoInst *store;
10683
10684                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
10685                                 store->flags |= ins_flag;
10686                         } else {
10687                                 gboolean is_const = FALSE;
10688                                 MonoVTable *vtable = NULL;
10689                                 gpointer addr = NULL;
10690
10691                                 if (!context_used) {
10692                                         vtable = mono_class_vtable (cfg->domain, klass);
10693                                         CHECK_TYPELOAD (klass);
10694                                 }
10695                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
10696                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
10697                                         int ro_type = ftype->type;
10698                                         if (!addr)
10699                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
10700                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
10701                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
10702                                         }
10703
10704                                         GSHAREDVT_FAILURE (op);
10705
10706                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
10707                                         is_const = TRUE;
10708                                         switch (ro_type) {
10709                                         case MONO_TYPE_BOOLEAN:
10710                                         case MONO_TYPE_U1:
10711                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
10712                                                 sp++;
10713                                                 break;
10714                                         case MONO_TYPE_I1:
10715                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
10716                                                 sp++;
10717                                                 break;
10718                                         case MONO_TYPE_CHAR:
10719                                         case MONO_TYPE_U2:
10720                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
10721                                                 sp++;
10722                                                 break;
10723                                         case MONO_TYPE_I2:
10724                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
10725                                                 sp++;
10726                                                 break;
10727                                                 break;
10728                                         case MONO_TYPE_I4:
10729                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
10730                                                 sp++;
10731                                                 break;
10732                                         case MONO_TYPE_U4:
10733                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
10734                                                 sp++;
10735                                                 break;
10736                                         case MONO_TYPE_I:
10737                                         case MONO_TYPE_U:
10738                                         case MONO_TYPE_PTR:
10739                                         case MONO_TYPE_FNPTR:
10740                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10741                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
10742                                                 sp++;
10743                                                 break;
10744                                         case MONO_TYPE_STRING:
10745                                         case MONO_TYPE_OBJECT:
10746                                         case MONO_TYPE_CLASS:
10747                                         case MONO_TYPE_SZARRAY:
10748                                         case MONO_TYPE_ARRAY:
10749                                                 if (!mono_gc_is_moving ()) {
10750                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
10751                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
10752                                                         sp++;
10753                                                 } else {
10754                                                         is_const = FALSE;
10755                                                 }
10756                                                 break;
10757                                         case MONO_TYPE_I8:
10758                                         case MONO_TYPE_U8:
10759                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
10760                                                 sp++;
10761                                                 break;
10762                                         case MONO_TYPE_R4:
10763                                         case MONO_TYPE_R8:
10764                                         case MONO_TYPE_VALUETYPE:
10765                                         default:
10766                                                 is_const = FALSE;
10767                                                 break;
10768                                         }
10769                                 }
10770
10771                                 if (!is_const) {
10772                                         MonoInst *load;
10773
10774                                         CHECK_STACK_OVF (1);
10775
10776                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
10777                                         load->flags |= ins_flag;
10778                                         ins_flag = 0;
10779                                         *sp++ = load;
10780                                 }
10781                         }
10782
10783                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
10784                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10785                                 mini_emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10786                         }
10787
10788                         ins_flag = 0;
10789                         ip += 5;
10790                         break;
10791                 }
10792                 case CEE_STOBJ:
10793                         CHECK_STACK (2);
10794                         sp -= 2;
10795                         CHECK_OPSIZE (5);
10796                         token = read32 (ip + 1);
10797                         klass = mini_get_class (method, token, generic_context);
10798                         CHECK_TYPELOAD (klass);
10799
10800                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
10801                         mini_emit_memory_store (cfg, &klass->byval_arg, sp [0], sp [1], ins_flag);
10802                         ins_flag = 0;
10803                         ip += 5;
10804                         inline_costs += 1;
10805                         break;
10806
10807                         /*
10808                          * Array opcodes
10809                          */
10810                 case CEE_NEWARR: {
10811                         MonoInst *len_ins;
10812                         const char *data_ptr;
10813                         int data_size = 0;
10814                         guint32 field_token;
10815
10816                         CHECK_STACK (1);
10817                         --sp;
10818
10819                         CHECK_OPSIZE (5);
10820                         token = read32 (ip + 1);
10821
10822                         klass = mini_get_class (method, token, generic_context);
10823                         CHECK_TYPELOAD (klass);
10824                         if (klass->byval_arg.type == MONO_TYPE_VOID)
10825                                 UNVERIFIED;
10826
10827                         context_used = mini_class_check_context_used (cfg, klass);
10828
10829                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
10830                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
10831                                 ins->sreg1 = sp [0]->dreg;
10832                                 ins->type = STACK_I4;
10833                                 ins->dreg = alloc_ireg (cfg);
10834                                 MONO_ADD_INS (cfg->cbb, ins);
10835                                 *sp = mono_decompose_opcode (cfg, ins);
10836                         }
10837
10838                         if (context_used) {
10839                                 MonoInst *args [3];
10840                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10841                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
10842
10843                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
10844
10845                                 /* vtable */
10846                                 args [0] = mini_emit_get_rgctx_klass (cfg, context_used,
10847                                         array_class, MONO_RGCTX_INFO_VTABLE);
10848                                 /* array len */
10849                                 args [1] = sp [0];
10850
10851                                 if (managed_alloc)
10852                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
10853                                 else
10854                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
10855                         } else {
10856                                 if (cfg->opt & MONO_OPT_SHARED) {
10857                                         /* Decompose now to avoid problems with references to the domainvar */
10858                                         MonoInst *iargs [3];
10859
10860                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10861                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
10862                                         iargs [2] = sp [0];
10863
10864                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
10865                                 } else {
10866                                         /* Decompose later since it is needed by abcrem */
10867                                         MonoClass *array_type = mono_array_class_get (klass, 1);
10868                                         mono_class_vtable (cfg->domain, array_type);
10869                                         CHECK_TYPELOAD (array_type);
10870
10871                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
10872                                         ins->dreg = alloc_ireg_ref (cfg);
10873                                         ins->sreg1 = sp [0]->dreg;
10874                                         ins->inst_newa_class = klass;
10875                                         ins->type = STACK_OBJ;
10876                                         ins->klass = array_type;
10877                                         MONO_ADD_INS (cfg->cbb, ins);
10878                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10879                                         cfg->cbb->has_array_access = TRUE;
10880
10881                                         /* Needed so mono_emit_load_get_addr () gets called */
10882                                         mono_get_got_var (cfg);
10883                                 }
10884                         }
10885
10886                         len_ins = sp [0];
10887                         ip += 5;
10888                         *sp++ = ins;
10889                         inline_costs += 1;
10890
10891                         /*
10892                          * we inline/optimize the initialization sequence if possible.
10893                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
10894                          * for small sizes open code the memcpy
10895                          * ensure the rva field is big enough
10896                          */
10897                         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))) {
10898                                 MonoMethod *memcpy_method = mini_get_memcpy_method ();
10899                                 MonoInst *iargs [3];
10900                                 int add_reg = alloc_ireg_mp (cfg);
10901
10902                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
10903                                 if (cfg->compile_aot) {
10904                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
10905                                 } else {
10906                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
10907                                 }
10908                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
10909                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
10910                                 ip += 11;
10911                         }
10912
10913                         break;
10914                 }
10915                 case CEE_LDLEN:
10916                         CHECK_STACK (1);
10917                         --sp;
10918                         if (sp [0]->type != STACK_OBJ)
10919                                 UNVERIFIED;
10920
10921                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
10922                         ins->dreg = alloc_preg (cfg);
10923                         ins->sreg1 = sp [0]->dreg;
10924                         ins->type = STACK_I4;
10925                         /* This flag will be inherited by the decomposition */
10926                         ins->flags |= MONO_INST_FAULT;
10927                         MONO_ADD_INS (cfg->cbb, ins);
10928                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
10929                         cfg->cbb->has_array_access = TRUE;
10930                         ip ++;
10931                         *sp++ = ins;
10932                         break;
10933                 case CEE_LDELEMA:
10934                         CHECK_STACK (2);
10935                         sp -= 2;
10936                         CHECK_OPSIZE (5);
10937                         if (sp [0]->type != STACK_OBJ)
10938                                 UNVERIFIED;
10939
10940                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10941
10942                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
10943                         CHECK_TYPELOAD (klass);
10944                         /* we need to make sure that this array is exactly the type it needs
10945                          * to be for correctness. the wrappers are lax with their usage
10946                          * so we need to ignore them here
10947                          */
10948                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
10949                                 MonoClass *array_class = mono_array_class_get (klass, 1);
10950                                 mini_emit_check_array_type (cfg, sp [0], array_class);
10951                                 CHECK_TYPELOAD (array_class);
10952                         }
10953
10954                         readonly = FALSE;
10955                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10956                         *sp++ = ins;
10957                         ip += 5;
10958                         break;
10959                 case CEE_LDELEM:
10960                 case CEE_LDELEM_I1:
10961                 case CEE_LDELEM_U1:
10962                 case CEE_LDELEM_I2:
10963                 case CEE_LDELEM_U2:
10964                 case CEE_LDELEM_I4:
10965                 case CEE_LDELEM_U4:
10966                 case CEE_LDELEM_I8:
10967                 case CEE_LDELEM_I:
10968                 case CEE_LDELEM_R4:
10969                 case CEE_LDELEM_R8:
10970                 case CEE_LDELEM_REF: {
10971                         MonoInst *addr;
10972
10973                         CHECK_STACK (2);
10974                         sp -= 2;
10975
10976                         if (*ip == CEE_LDELEM) {
10977                                 CHECK_OPSIZE (5);
10978                                 token = read32 (ip + 1);
10979                                 klass = mini_get_class (method, token, generic_context);
10980                                 CHECK_TYPELOAD (klass);
10981                                 mono_class_init (klass);
10982                         }
10983                         else
10984                                 klass = array_access_to_klass (*ip);
10985
10986                         if (sp [0]->type != STACK_OBJ)
10987                                 UNVERIFIED;
10988
10989                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
10990
10991                         if (mini_is_gsharedvt_variable_klass (klass)) {
10992                                 // FIXME-VT: OP_ICONST optimization
10993                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
10994                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10995                                 ins->opcode = OP_LOADV_MEMBASE;
10996                         } else if (sp [1]->opcode == OP_ICONST) {
10997                                 int array_reg = sp [0]->dreg;
10998                                 int index_reg = sp [1]->dreg;
10999                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11000
11001                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11002                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11003
11004                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11005                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11006                         } else {
11007                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11008                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11009                         }
11010                         *sp++ = ins;
11011                         if (*ip == CEE_LDELEM)
11012                                 ip += 5;
11013                         else
11014                                 ++ip;
11015                         break;
11016                 }
11017                 case CEE_STELEM_I:
11018                 case CEE_STELEM_I1:
11019                 case CEE_STELEM_I2:
11020                 case CEE_STELEM_I4:
11021                 case CEE_STELEM_I8:
11022                 case CEE_STELEM_R4:
11023                 case CEE_STELEM_R8:
11024                 case CEE_STELEM_REF:
11025                 case CEE_STELEM: {
11026                         CHECK_STACK (3);
11027                         sp -= 3;
11028
11029                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11030
11031                         if (*ip == CEE_STELEM) {
11032                                 CHECK_OPSIZE (5);
11033                                 token = read32 (ip + 1);
11034                                 klass = mini_get_class (method, token, generic_context);
11035                                 CHECK_TYPELOAD (klass);
11036                                 mono_class_init (klass);
11037                         }
11038                         else
11039                                 klass = array_access_to_klass (*ip);
11040
11041                         if (sp [0]->type != STACK_OBJ)
11042                                 UNVERIFIED;
11043
11044                         emit_array_store (cfg, klass, sp, TRUE);
11045
11046                         if (*ip == CEE_STELEM)
11047                                 ip += 5;
11048                         else
11049                                 ++ip;
11050                         inline_costs += 1;
11051                         break;
11052                 }
11053                 case CEE_CKFINITE: {
11054                         CHECK_STACK (1);
11055                         --sp;
11056
11057                         if (cfg->llvm_only) {
11058                                 MonoInst *iargs [1];
11059
11060                                 iargs [0] = sp [0];
11061                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
11062                         } else  {
11063                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
11064                                 ins->sreg1 = sp [0]->dreg;
11065                                 ins->dreg = alloc_freg (cfg);
11066                                 ins->type = STACK_R8;
11067                                 MONO_ADD_INS (cfg->cbb, ins);
11068
11069                                 *sp++ = mono_decompose_opcode (cfg, ins);
11070                         }
11071
11072                         ++ip;
11073                         break;
11074                 }
11075                 case CEE_REFANYVAL: {
11076                         MonoInst *src_var, *src;
11077
11078                         int klass_reg = alloc_preg (cfg);
11079                         int dreg = alloc_preg (cfg);
11080
11081                         GSHAREDVT_FAILURE (*ip);
11082
11083                         CHECK_STACK (1);
11084                         MONO_INST_NEW (cfg, ins, *ip);
11085                         --sp;
11086                         CHECK_OPSIZE (5);
11087                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11088                         CHECK_TYPELOAD (klass);
11089
11090                         context_used = mini_class_check_context_used (cfg, klass);
11091
11092                         // FIXME:
11093                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11094                         if (!src_var)
11095                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
11096                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
11097                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
11098
11099                         if (context_used) {
11100                                 MonoInst *klass_ins;
11101
11102                                 klass_ins = mini_emit_get_rgctx_klass (cfg, context_used,
11103                                                 klass, MONO_RGCTX_INFO_KLASS);
11104
11105                                 // FIXME:
11106                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
11107                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
11108                         } else {
11109                                 mini_emit_class_check (cfg, klass_reg, klass);
11110                         }
11111                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
11112                         ins->type = STACK_MP;
11113                         ins->klass = klass;
11114                         *sp++ = ins;
11115                         ip += 5;
11116                         break;
11117                 }
11118                 case CEE_MKREFANY: {
11119                         MonoInst *loc, *addr;
11120
11121                         GSHAREDVT_FAILURE (*ip);
11122
11123                         CHECK_STACK (1);
11124                         MONO_INST_NEW (cfg, ins, *ip);
11125                         --sp;
11126                         CHECK_OPSIZE (5);
11127                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11128                         CHECK_TYPELOAD (klass);
11129
11130                         context_used = mini_class_check_context_used (cfg, klass);
11131
11132                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
11133                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
11134
11135                         if (context_used) {
11136                                 MonoInst *const_ins;
11137                                 int type_reg = alloc_preg (cfg);
11138
11139                                 const_ins = mini_emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
11140                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
11141                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11142                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11143                         } else {
11144                                 int const_reg = alloc_preg (cfg);
11145                                 int type_reg = alloc_preg (cfg);
11146
11147                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
11148                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
11149                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
11150                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
11151                         }
11152                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
11153
11154                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
11155                         ins->type = STACK_VTYPE;
11156                         ins->klass = mono_defaults.typed_reference_class;
11157                         *sp++ = ins;
11158                         ip += 5;
11159                         break;
11160                 }
11161                 case CEE_LDTOKEN: {
11162                         gpointer handle;
11163                         MonoClass *handle_class;
11164
11165                         CHECK_STACK_OVF (1);
11166
11167                         CHECK_OPSIZE (5);
11168                         n = read32 (ip + 1);
11169
11170                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
11171                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
11172                                 handle = mono_method_get_wrapper_data (method, n);
11173                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
11174                                 if (handle_class == mono_defaults.typehandle_class)
11175                                         handle = &((MonoClass*)handle)->byval_arg;
11176                         }
11177                         else {
11178                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
11179                                 CHECK_CFG_ERROR;
11180                         }
11181                         if (!handle)
11182                                 LOAD_ERROR;
11183                         mono_class_init (handle_class);
11184                         if (cfg->gshared) {
11185                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
11186                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
11187                                         /* This case handles ldtoken
11188                                            of an open type, like for
11189                                            typeof(Gen<>). */
11190                                         context_used = 0;
11191                                 } else if (handle_class == mono_defaults.typehandle_class) {
11192                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
11193                                 } else if (handle_class == mono_defaults.fieldhandle_class)
11194                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
11195                                 else if (handle_class == mono_defaults.methodhandle_class)
11196                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
11197                                 else
11198                                         g_assert_not_reached ();
11199                         }
11200
11201                         if ((cfg->opt & MONO_OPT_SHARED) &&
11202                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
11203                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
11204                                 MonoInst *addr, *vtvar, *iargs [3];
11205                                 int method_context_used;
11206
11207                                 method_context_used = mini_method_check_context_used (cfg, method);
11208
11209                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11210
11211                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
11212                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
11213                                 if (method_context_used) {
11214                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
11215                                                 method, MONO_RGCTX_INFO_METHOD);
11216                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
11217                                 } else {
11218                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
11219                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
11220                                 }
11221                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11222
11223                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11224
11225                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11226                         } else {
11227                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11228                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
11229                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
11230                                         (cmethod->klass == mono_defaults.systemtype_class) &&
11231                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
11232                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
11233
11234                                         mono_class_init (tclass);
11235                                         if (context_used) {
11236                                                 ins = mini_emit_get_rgctx_klass (cfg, context_used,
11237                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
11238                                         } else if (cfg->compile_aot) {
11239                                                 if (method->wrapper_type) {
11240                                                         error_init (&error); //got to do it since there are multiple conditionals below
11241                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
11242                                                                 /* Special case for static synchronized wrappers */
11243                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
11244                                                         } else {
11245                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
11246                                                                 /* FIXME: n is not a normal token */
11247                                                                 DISABLE_AOT (cfg);
11248                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11249                                                         }
11250                                                 } else {
11251                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
11252                                                 }
11253                                         } else {
11254                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
11255                                                 CHECK_CFG_ERROR;
11256                                                 EMIT_NEW_PCONST (cfg, ins, rt);
11257                                         }
11258                                         ins->type = STACK_OBJ;
11259                                         ins->klass = cmethod->klass;
11260                                         ip += 5;
11261                                 } else {
11262                                         MonoInst *addr, *vtvar;
11263
11264                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
11265
11266                                         if (context_used) {
11267                                                 if (handle_class == mono_defaults.typehandle_class) {
11268                                                         ins = mini_emit_get_rgctx_klass (cfg, context_used,
11269                                                                         mono_class_from_mono_type ((MonoType *)handle),
11270                                                                         MONO_RGCTX_INFO_TYPE);
11271                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
11272                                                         ins = emit_get_rgctx_method (cfg, context_used,
11273                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
11274                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
11275                                                         ins = emit_get_rgctx_field (cfg, context_used,
11276                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
11277                                                 } else {
11278                                                         g_assert_not_reached ();
11279                                                 }
11280                                         } else if (cfg->compile_aot) {
11281                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
11282                                         } else {
11283                                                 EMIT_NEW_PCONST (cfg, ins, handle);
11284                                         }
11285                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
11286                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
11287                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
11288                                 }
11289                         }
11290
11291                         *sp++ = ins;
11292                         ip += 5;
11293                         break;
11294                 }
11295                 case CEE_THROW:
11296                         CHECK_STACK (1);
11297                         if (sp [-1]->type != STACK_OBJ)
11298                                 UNVERIFIED;
11299
11300                         MONO_INST_NEW (cfg, ins, OP_THROW);
11301                         --sp;
11302                         ins->sreg1 = sp [0]->dreg;
11303                         ip++;
11304                         cfg->cbb->out_of_line = TRUE;
11305                         MONO_ADD_INS (cfg->cbb, ins);
11306                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
11307                         MONO_ADD_INS (cfg->cbb, ins);
11308                         sp = stack_start;
11309
11310                         link_bblock (cfg, cfg->cbb, end_bblock);
11311                         start_new_bblock = 1;
11312                         /* This can complicate code generation for llvm since the return value might not be defined */
11313                         if (COMPILE_LLVM (cfg))
11314                                 INLINE_FAILURE ("throw");
11315                         break;
11316                 case CEE_ENDFINALLY:
11317                         if (!ip_in_finally_clause (cfg, ip - header->code))
11318                                 UNVERIFIED;
11319                         /* mono_save_seq_point_info () depends on this */
11320                         if (sp != stack_start)
11321                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
11322                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
11323                         MONO_ADD_INS (cfg->cbb, ins);
11324                         ip++;
11325                         start_new_bblock = 1;
11326
11327                         /*
11328                          * Control will leave the method so empty the stack, otherwise
11329                          * the next basic block will start with a nonempty stack.
11330                          */
11331                         while (sp != stack_start) {
11332                                 sp--;
11333                         }
11334                         break;
11335                 case CEE_LEAVE:
11336                 case CEE_LEAVE_S: {
11337                         GList *handlers;
11338
11339                         if (*ip == CEE_LEAVE) {
11340                                 CHECK_OPSIZE (5);
11341                                 target = ip + 5 + (gint32)read32(ip + 1);
11342                         } else {
11343                                 CHECK_OPSIZE (2);
11344                                 target = ip + 2 + (signed char)(ip [1]);
11345                         }
11346
11347                         /* empty the stack */
11348                         while (sp != stack_start) {
11349                                 sp--;
11350                         }
11351
11352                         /*
11353                          * If this leave statement is in a catch block, check for a
11354                          * pending exception, and rethrow it if necessary.
11355                          * We avoid doing this in runtime invoke wrappers, since those are called
11356                          * by native code which excepts the wrapper to catch all exceptions.
11357                          */
11358                         for (i = 0; i < header->num_clauses; ++i) {
11359                                 MonoExceptionClause *clause = &header->clauses [i];
11360
11361                                 /*
11362                                  * Use <= in the final comparison to handle clauses with multiple
11363                                  * leave statements, like in bug #78024.
11364                                  * The ordering of the exception clauses guarantees that we find the
11365                                  * innermost clause.
11366                                  */
11367                                 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) {
11368                                         MonoInst *exc_ins;
11369                                         MonoBasicBlock *dont_throw;
11370
11371                                         /*
11372                                           MonoInst *load;
11373
11374                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
11375                                         */
11376
11377                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
11378
11379                                         NEW_BBLOCK (cfg, dont_throw);
11380
11381                                         /*
11382                                          * Currently, we always rethrow the abort exception, despite the
11383                                          * fact that this is not correct. See thread6.cs for an example.
11384                                          * But propagating the abort exception is more important than
11385                                          * getting the sematics right.
11386                                          */
11387                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
11388                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
11389                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
11390
11391                                         MONO_START_BB (cfg, dont_throw);
11392                                 }
11393                         }
11394
11395 #ifdef ENABLE_LLVM
11396                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
11397 #endif
11398
11399                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
11400                                 GList *tmp;
11401                                 MonoExceptionClause *clause;
11402
11403                                 for (tmp = handlers; tmp; tmp = tmp->next) {
11404                                         clause = (MonoExceptionClause *)tmp->data;
11405                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
11406                                         g_assert (tblock);
11407                                         link_bblock (cfg, cfg->cbb, tblock);
11408                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
11409                                         ins->inst_target_bb = tblock;
11410                                         ins->inst_eh_block = clause;
11411                                         MONO_ADD_INS (cfg->cbb, ins);
11412                                         cfg->cbb->has_call_handler = 1;
11413                                         if (COMPILE_LLVM (cfg)) {
11414                                                 MonoBasicBlock *target_bb;
11415
11416                                                 /*
11417                                                  * Link the finally bblock with the target, since it will
11418                                                  * conceptually branch there.
11419                                                  */
11420                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
11421                                                 GET_BBLOCK (cfg, target_bb, target);
11422                                                 link_bblock (cfg, tblock, target_bb);
11423                                         }
11424                                 }
11425                                 g_list_free (handlers);
11426                         }
11427
11428                         MONO_INST_NEW (cfg, ins, OP_BR);
11429                         MONO_ADD_INS (cfg->cbb, ins);
11430                         GET_BBLOCK (cfg, tblock, target);
11431                         link_bblock (cfg, cfg->cbb, tblock);
11432                         ins->inst_target_bb = tblock;
11433
11434                         start_new_bblock = 1;
11435
11436                         if (*ip == CEE_LEAVE)
11437                                 ip += 5;
11438                         else
11439                                 ip += 2;
11440
11441                         break;
11442                 }
11443
11444                         /*
11445                          * Mono specific opcodes
11446                          */
11447                 case MONO_CUSTOM_PREFIX: {
11448
11449                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
11450
11451                         CHECK_OPSIZE (2);
11452                         switch (ip [1]) {
11453                         case CEE_MONO_ICALL: {
11454                                 gpointer func;
11455                                 MonoJitICallInfo *info;
11456
11457                                 token = read32 (ip + 2);
11458                                 func = mono_method_get_wrapper_data (method, token);
11459                                 info = mono_find_jit_icall_by_addr (func);
11460                                 if (!info)
11461                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
11462                                 g_assert (info);
11463
11464                                 CHECK_STACK (info->sig->param_count);
11465                                 sp -= info->sig->param_count;
11466
11467                                 if (cfg->compile_aot && !strcmp (info->name, "mono_threads_attach_coop")) {
11468                                         MonoInst *addr;
11469
11470                                         /*
11471                                          * This is called on unattached threads, so it cannot go through the trampoline
11472                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11473                                          * instead.
11474                                          */
11475                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_ICALL_ADDR_NOCALL, (char*)info->name);
11476                                         ins = mini_emit_calli (cfg, info->sig, sp, addr, NULL, NULL);
11477                                 } else {
11478                                         ins = mono_emit_jit_icall (cfg, info->func, sp);
11479                                 }
11480
11481                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
11482                                         *sp++ = ins;
11483
11484                                 ip += 6;
11485                                 inline_costs += 10 * num_calls++;
11486
11487                                 break;
11488                         }
11489                         case CEE_MONO_LDPTR_CARD_TABLE:
11490                         case CEE_MONO_LDPTR_NURSERY_START:
11491                         case CEE_MONO_LDPTR_NURSERY_BITS:
11492                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
11493                                 CHECK_STACK_OVF (1);
11494
11495                                 switch (ip [1]) {
11496                                 case CEE_MONO_LDPTR_CARD_TABLE:
11497                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
11498                                         break;
11499                                 case CEE_MONO_LDPTR_NURSERY_START:
11500                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
11501                                         break;
11502                                 case CEE_MONO_LDPTR_NURSERY_BITS:
11503                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
11504                                         break;
11505                                 case CEE_MONO_LDPTR_INT_REQ_FLAG:
11506                                         ins = mini_emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
11507                                         break;
11508                                 default:
11509                                         g_assert_not_reached ();
11510                                         break;
11511                                 }
11512
11513                                 *sp++ = ins;
11514                                 ip += 2;
11515                                 inline_costs += 10 * num_calls++;
11516                                 break;
11517                         }
11518                         case CEE_MONO_LDPTR: {
11519                                 gpointer ptr;
11520
11521                                 CHECK_STACK_OVF (1);
11522                                 CHECK_OPSIZE (6);
11523                                 token = read32 (ip + 2);
11524
11525                                 ptr = mono_method_get_wrapper_data (method, token);
11526                                 EMIT_NEW_PCONST (cfg, ins, ptr);
11527                                 *sp++ = ins;
11528                                 ip += 6;
11529                                 inline_costs += 10 * num_calls++;
11530                                 /* Can't embed random pointers into AOT code */
11531                                 DISABLE_AOT (cfg);
11532                                 break;
11533                         }
11534                         case CEE_MONO_JIT_ICALL_ADDR: {
11535                                 MonoJitICallInfo *callinfo;
11536                                 gpointer ptr;
11537
11538                                 CHECK_STACK_OVF (1);
11539                                 CHECK_OPSIZE (6);
11540                                 token = read32 (ip + 2);
11541
11542                                 ptr = mono_method_get_wrapper_data (method, token);
11543                                 callinfo = mono_find_jit_icall_by_addr (ptr);
11544                                 g_assert (callinfo);
11545                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
11546                                 *sp++ = ins;
11547                                 ip += 6;
11548                                 inline_costs += 10 * num_calls++;
11549                                 break;
11550                         }
11551                         case CEE_MONO_ICALL_ADDR: {
11552                                 MonoMethod *cmethod;
11553                                 gpointer ptr;
11554
11555                                 CHECK_STACK_OVF (1);
11556                                 CHECK_OPSIZE (6);
11557                                 token = read32 (ip + 2);
11558
11559                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
11560
11561                                 if (cfg->compile_aot) {
11562                                         if (cfg->direct_pinvoke && ip + 6 < end && (ip [6] == CEE_POP)) {
11563                                                 /*
11564                                                  * This is generated by emit_native_wrapper () to resolve the pinvoke address
11565                                                  * before the call, its not needed when using direct pinvoke.
11566                                                  * This is not an optimization, but its used to avoid looking up pinvokes
11567                                                  * on platforms which don't support dlopen ().
11568                                                  */
11569                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11570                                         } else {
11571                                                 EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
11572                                         }
11573                                 } else {
11574                                         ptr = mono_lookup_internal_call (cmethod);
11575                                         g_assert (ptr);
11576                                         EMIT_NEW_PCONST (cfg, ins, ptr);
11577                                 }
11578                                 *sp++ = ins;
11579                                 ip += 6;
11580                                 break;
11581                         }
11582                         case CEE_MONO_VTADDR: {
11583                                 MonoInst *src_var, *src;
11584
11585                                 CHECK_STACK (1);
11586                                 --sp;
11587
11588                                 // FIXME:
11589                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
11590                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
11591                                 *sp++ = src;
11592                                 ip += 2;
11593                                 break;
11594                         }
11595                         case CEE_MONO_NEWOBJ: {
11596                                 MonoInst *iargs [2];
11597
11598                                 CHECK_STACK_OVF (1);
11599                                 CHECK_OPSIZE (6);
11600                                 token = read32 (ip + 2);
11601                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11602                                 mono_class_init (klass);
11603                                 NEW_DOMAINCONST (cfg, iargs [0]);
11604                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
11605                                 NEW_CLASSCONST (cfg, iargs [1], klass);
11606                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
11607                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
11608                                 ip += 6;
11609                                 inline_costs += 10 * num_calls++;
11610                                 break;
11611                         }
11612                         case CEE_MONO_OBJADDR:
11613                                 CHECK_STACK (1);
11614                                 --sp;
11615                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
11616                                 ins->dreg = alloc_ireg_mp (cfg);
11617                                 ins->sreg1 = sp [0]->dreg;
11618                                 ins->type = STACK_MP;
11619                                 MONO_ADD_INS (cfg->cbb, ins);
11620                                 *sp++ = ins;
11621                                 ip += 2;
11622                                 break;
11623                         case CEE_MONO_LDNATIVEOBJ:
11624                                 /*
11625                                  * Similar to LDOBJ, but instead load the unmanaged
11626                                  * representation of the vtype to the stack.
11627                                  */
11628                                 CHECK_STACK (1);
11629                                 CHECK_OPSIZE (6);
11630                                 --sp;
11631                                 token = read32 (ip + 2);
11632                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11633                                 g_assert (klass->valuetype);
11634                                 mono_class_init (klass);
11635
11636                                 {
11637                                         MonoInst *src, *dest, *temp;
11638
11639                                         src = sp [0];
11640                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
11641                                         temp->backend.is_pinvoke = 1;
11642                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
11643                                         mini_emit_memory_copy (cfg, dest, src, klass, TRUE, 0);
11644
11645                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
11646                                         dest->type = STACK_VTYPE;
11647                                         dest->klass = klass;
11648
11649                                         *sp ++ = dest;
11650                                         ip += 6;
11651                                 }
11652                                 break;
11653                         case CEE_MONO_RETOBJ: {
11654                                 /*
11655                                  * Same as RET, but return the native representation of a vtype
11656                                  * to the caller.
11657                                  */
11658                                 g_assert (cfg->ret);
11659                                 g_assert (mono_method_signature (method)->pinvoke);
11660                                 CHECK_STACK (1);
11661                                 --sp;
11662
11663                                 CHECK_OPSIZE (6);
11664                                 token = read32 (ip + 2);
11665                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
11666
11667                                 if (!cfg->vret_addr) {
11668                                         g_assert (cfg->ret_var_is_local);
11669
11670                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
11671                                 } else {
11672                                         EMIT_NEW_RETLOADA (cfg, ins);
11673                                 }
11674                                 mini_emit_memory_copy (cfg, ins, sp [0], klass, TRUE, 0);
11675
11676                                 if (sp != stack_start)
11677                                         UNVERIFIED;
11678
11679                                 MONO_INST_NEW (cfg, ins, OP_BR);
11680                                 ins->inst_target_bb = end_bblock;
11681                                 MONO_ADD_INS (cfg->cbb, ins);
11682                                 link_bblock (cfg, cfg->cbb, end_bblock);
11683                                 start_new_bblock = 1;
11684                                 ip += 6;
11685                                 break;
11686                         }
11687                         case CEE_MONO_SAVE_LMF:
11688                         case CEE_MONO_RESTORE_LMF:
11689                                 ip += 2;
11690                                 break;
11691                         case CEE_MONO_CLASSCONST:
11692                                 CHECK_STACK_OVF (1);
11693                                 CHECK_OPSIZE (6);
11694                                 token = read32 (ip + 2);
11695                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
11696                                 *sp++ = ins;
11697                                 ip += 6;
11698                                 inline_costs += 10 * num_calls++;
11699                                 break;
11700                         case CEE_MONO_NOT_TAKEN:
11701                                 cfg->cbb->out_of_line = TRUE;
11702                                 ip += 2;
11703                                 break;
11704                         case CEE_MONO_TLS: {
11705                                 MonoTlsKey key;
11706
11707                                 CHECK_STACK_OVF (1);
11708                                 CHECK_OPSIZE (6);
11709                                 key = (MonoTlsKey)read32 (ip + 2);
11710                                 g_assert (key < TLS_KEY_NUM);
11711
11712                                 ins = mono_create_tls_get (cfg, key);
11713                                 g_assert (ins);
11714                                 ins->type = STACK_PTR;
11715                                 *sp++ = ins;
11716                                 ip += 6;
11717                                 break;
11718                         }
11719                         case CEE_MONO_DYN_CALL: {
11720                                 MonoCallInst *call;
11721
11722                                 /* It would be easier to call a trampoline, but that would put an
11723                                  * extra frame on the stack, confusing exception handling. So
11724                                  * implement it inline using an opcode for now.
11725                                  */
11726
11727                                 if (!cfg->dyn_call_var) {
11728                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11729                                         /* prevent it from being register allocated */
11730                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
11731                                 }
11732
11733                                 /* Has to use a call inst since it local regalloc expects it */
11734                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
11735                                 ins = (MonoInst*)call;
11736                                 sp -= 2;
11737                                 ins->sreg1 = sp [0]->dreg;
11738                                 ins->sreg2 = sp [1]->dreg;
11739                                 MONO_ADD_INS (cfg->cbb, ins);
11740
11741                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
11742
11743                                 ip += 2;
11744                                 inline_costs += 10 * num_calls++;
11745
11746                                 break;
11747                         }
11748                         case CEE_MONO_MEMORY_BARRIER: {
11749                                 CHECK_OPSIZE (6);
11750                                 mini_emit_memory_barrier (cfg, (int)read32 (ip + 2));
11751                                 ip += 6;
11752                                 break;
11753                         }
11754                         case CEE_MONO_ATOMIC_STORE_I4: {
11755                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
11756
11757                                 CHECK_OPSIZE (6);
11758                                 CHECK_STACK (2);
11759                                 sp -= 2;
11760
11761                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
11762                                 ins->dreg = sp [0]->dreg;
11763                                 ins->sreg1 = sp [1]->dreg;
11764                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
11765                                 MONO_ADD_INS (cfg->cbb, ins);
11766
11767                                 ip += 6;
11768                                 break;
11769                         }
11770                         case CEE_MONO_JIT_ATTACH: {
11771                                 MonoInst *args [16], *domain_ins;
11772                                 MonoInst *ad_ins, *jit_tls_ins;
11773                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
11774
11775                                 g_assert (!mono_threads_is_blocking_transition_enabled ());
11776
11777                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
11778
11779                                 EMIT_NEW_PCONST (cfg, ins, NULL);
11780                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11781
11782                                 ad_ins = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
11783                                 jit_tls_ins = mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
11784
11785                                 if (ad_ins && jit_tls_ins) {
11786                                         NEW_BBLOCK (cfg, next_bb);
11787                                         NEW_BBLOCK (cfg, call_bb);
11788
11789                                         if (cfg->compile_aot) {
11790                                                 /* AOT code is only used in the root domain */
11791                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
11792                                         } else {
11793                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
11794                                         }
11795                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
11796                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
11797
11798                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
11799                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
11800
11801                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
11802                                         MONO_START_BB (cfg, call_bb);
11803                                 }
11804
11805                                 /* AOT code is only used in the root domain */
11806                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
11807                                 if (cfg->compile_aot) {
11808                                         MonoInst *addr;
11809
11810                                         /*
11811                                          * This is called on unattached threads, so it cannot go through the trampoline
11812                                          * infrastructure. Use an indirect call through a got slot initialized at load time
11813                                          * instead.
11814                                          */
11815                                         EMIT_NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_JIT_THREAD_ATTACH, NULL);
11816                                         ins = mini_emit_calli (cfg, helper_sig_jit_thread_attach, args, addr, NULL, NULL);
11817                                 } else {
11818                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
11819                                 }
11820                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
11821
11822                                 if (next_bb)
11823                                         MONO_START_BB (cfg, next_bb);
11824
11825                                 ip += 2;
11826                                 break;
11827                         }
11828                         case CEE_MONO_JIT_DETACH: {
11829                                 MonoInst *args [16];
11830
11831                                 /* Restore the original domain */
11832                                 dreg = alloc_ireg (cfg);
11833                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
11834                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
11835                                 ip += 2;
11836                                 break;
11837                         }
11838                         case CEE_MONO_CALLI_EXTRA_ARG: {
11839                                 MonoInst *addr;
11840                                 MonoMethodSignature *fsig;
11841                                 MonoInst *arg;
11842
11843                                 /*
11844                                  * This is the same as CEE_CALLI, but passes an additional argument
11845                                  * to the called method in llvmonly mode.
11846                                  * This is only used by delegate invoke wrappers to call the
11847                                  * actual delegate method.
11848                                  */
11849                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
11850
11851                                 CHECK_OPSIZE (6);
11852                                 token = read32 (ip + 2);
11853
11854                                 ins = NULL;
11855
11856                                 cmethod = NULL;
11857                                 CHECK_STACK (1);
11858                                 --sp;
11859                                 addr = *sp;
11860                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
11861                                 CHECK_CFG_ERROR;
11862
11863                                 if (cfg->llvm_only)
11864                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
11865
11866                                 n = fsig->param_count + fsig->hasthis + 1;
11867
11868                                 CHECK_STACK (n);
11869
11870                                 sp -= n;
11871                                 arg = sp [n - 1];
11872
11873                                 if (cfg->llvm_only) {
11874                                         /*
11875                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
11876                                          * cconv. This is set by mono_init_delegate ().
11877                                          */
11878                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
11879                                                 MonoInst *callee = addr;
11880                                                 MonoInst *call, *localloc_ins;
11881                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11882                                                 int low_bit_reg = alloc_preg (cfg);
11883
11884                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11885                                                 NEW_BBLOCK (cfg, end_bb);
11886
11887                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11888                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11889                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11890
11891                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
11892                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11893                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11894                                                 /*
11895                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
11896                                                  */
11897                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11898                                                 ins->dreg = alloc_preg (cfg);
11899                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11900                                                 MONO_ADD_INS (cfg->cbb, ins);
11901                                                 localloc_ins = ins;
11902                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11903                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11904                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11905
11906                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11907                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11908
11909                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
11910                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11911                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11912                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11913                                                 ins->dreg = call->dreg;
11914
11915                                                 MONO_START_BB (cfg, end_bb);
11916                                         } else {
11917                                                 /* Caller uses a normal calling conv */
11918
11919                                                 MonoInst *callee = addr;
11920                                                 MonoInst *call, *localloc_ins;
11921                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
11922                                                 int low_bit_reg = alloc_preg (cfg);
11923
11924                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
11925                                                 NEW_BBLOCK (cfg, end_bb);
11926
11927                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
11928                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
11929                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
11930
11931                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
11932                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
11933                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11934                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
11935                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
11936                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
11937                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
11938                                                 MONO_ADD_INS (cfg->cbb, addr);
11939                                                 /*
11940                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
11941                                                  */
11942                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
11943                                                 ins->dreg = alloc_preg (cfg);
11944                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
11945                                                 MONO_ADD_INS (cfg->cbb, ins);
11946                                                 localloc_ins = ins;
11947                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
11948                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
11949                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
11950
11951                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
11952                                                 ins->dreg = call->dreg;
11953                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
11954
11955                                                 MONO_START_BB (cfg, end_bb);
11956                                         }
11957                                 } else {
11958                                         /* Same as CEE_CALLI */
11959                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
11960                                                 /*
11961                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
11962                                                  */
11963                                                 MonoInst *callee = addr;
11964
11965                                                 addr = emit_get_rgctx_sig (cfg, context_used,
11966                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
11967                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, callee);
11968                                         } else {
11969                                                 ins = (MonoInst*)mini_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
11970                                         }
11971                                 }
11972
11973                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
11974                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
11975
11976                                 CHECK_CFG_EXCEPTION;
11977
11978                                 ip += 6;
11979                                 ins_flag = 0;
11980                                 constrained_class = NULL;
11981                                 break;
11982                         }
11983                         case CEE_MONO_LDDOMAIN:
11984                                 CHECK_STACK_OVF (1);
11985                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
11986                                 ip += 2;
11987                                 *sp++ = ins;
11988                                 break;
11989                         case CEE_MONO_GET_LAST_ERROR:
11990                                 CHECK_OPSIZE (2);
11991                                 CHECK_STACK_OVF (1);
11992
11993                                 MONO_INST_NEW (cfg, ins, OP_GET_LAST_ERROR);
11994                                 ins->dreg = alloc_dreg (cfg, STACK_I4);
11995                                 ins->type = STACK_I4;
11996                                 MONO_ADD_INS (cfg->cbb, ins);
11997
11998                                 ip += 2;
11999                                 *sp++ = ins;
12000                                 break;
12001                         case CEE_MONO_GET_RGCTX_ARG:
12002                                 CHECK_OPSIZE (2);
12003                                 CHECK_STACK_OVF (1);
12004
12005                                 mono_create_rgctx_var (cfg);
12006
12007                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12008                                 ins->dreg = alloc_dreg (cfg, STACK_PTR);
12009                                 ins->sreg1 = cfg->rgctx_var->dreg;
12010                                 ins->type = STACK_PTR;
12011                                 MONO_ADD_INS (cfg->cbb, ins);
12012
12013                                 ip += 2;
12014                                 *sp++ = ins;
12015                                 break;
12016                         default:
12017                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12018                                 break;
12019                         }
12020                         break;
12021                 }
12022
12023                 case CEE_PREFIX1: {
12024                         CHECK_OPSIZE (2);
12025                         switch (ip [1]) {
12026                         case CEE_ARGLIST: {
12027                                 /* somewhat similar to LDTOKEN */
12028                                 MonoInst *addr, *vtvar;
12029                                 CHECK_STACK_OVF (1);
12030                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12031
12032                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12033                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12034
12035                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12036                                 ins->type = STACK_VTYPE;
12037                                 ins->klass = mono_defaults.argumenthandle_class;
12038                                 *sp++ = ins;
12039                                 ip += 2;
12040                                 break;
12041                         }
12042                         case CEE_CEQ:
12043                         case CEE_CGT:
12044                         case CEE_CGT_UN:
12045                         case CEE_CLT:
12046                         case CEE_CLT_UN: {
12047                                 MonoInst *cmp, *arg1, *arg2;
12048
12049                                 CHECK_STACK (2);
12050                                 sp -= 2;
12051                                 arg1 = sp [0];
12052                                 arg2 = sp [1];
12053
12054                                 /*
12055                                  * The following transforms:
12056                                  *    CEE_CEQ    into OP_CEQ
12057                                  *    CEE_CGT    into OP_CGT
12058                                  *    CEE_CGT_UN into OP_CGT_UN
12059                                  *    CEE_CLT    into OP_CLT
12060                                  *    CEE_CLT_UN into OP_CLT_UN
12061                                  */
12062                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12063
12064                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12065                                 cmp->sreg1 = arg1->dreg;
12066                                 cmp->sreg2 = arg2->dreg;
12067                                 type_from_op (cfg, cmp, arg1, arg2);
12068                                 CHECK_TYPE (cmp);
12069                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12070                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12071                                         cmp->opcode = OP_LCOMPARE;
12072                                 else if (arg1->type == STACK_R4)
12073                                         cmp->opcode = OP_RCOMPARE;
12074                                 else if (arg1->type == STACK_R8)
12075                                         cmp->opcode = OP_FCOMPARE;
12076                                 else
12077                                         cmp->opcode = OP_ICOMPARE;
12078                                 MONO_ADD_INS (cfg->cbb, cmp);
12079                                 ins->type = STACK_I4;
12080                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
12081                                 type_from_op (cfg, ins, arg1, arg2);
12082
12083                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
12084                                         /*
12085                                          * The backends expect the fceq opcodes to do the
12086                                          * comparison too.
12087                                          */
12088                                         ins->sreg1 = cmp->sreg1;
12089                                         ins->sreg2 = cmp->sreg2;
12090                                         NULLIFY_INS (cmp);
12091                                 }
12092                                 MONO_ADD_INS (cfg->cbb, ins);
12093                                 *sp++ = ins;
12094                                 ip += 2;
12095                                 break;
12096                         }
12097                         case CEE_LDFTN: {
12098                                 MonoInst *argconst;
12099                                 MonoMethod *cil_method;
12100
12101                                 CHECK_STACK_OVF (1);
12102                                 CHECK_OPSIZE (6);
12103                                 n = read32 (ip + 2);
12104                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12105                                 CHECK_CFG_ERROR;
12106
12107                                 mono_class_init (cmethod->klass);
12108
12109                                 mono_save_token_info (cfg, image, n, cmethod);
12110
12111                                 context_used = mini_method_check_context_used (cfg, cmethod);
12112
12113                                 cil_method = cmethod;
12114                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
12115                                         emit_method_access_failure (cfg, method, cil_method);
12116
12117                                 if (mono_security_core_clr_enabled ())
12118                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12119
12120                                 /*
12121                                  * Optimize the common case of ldftn+delegate creation
12122                                  */
12123                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
12124                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12125                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12126                                                 MonoInst *target_ins, *handle_ins;
12127                                                 MonoMethod *invoke;
12128                                                 int invoke_context_used;
12129
12130                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12131                                                 if (!invoke || !mono_method_signature (invoke))
12132                                                         LOAD_ERROR;
12133
12134                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12135
12136                                                 target_ins = sp [-1];
12137
12138                                                 if (mono_security_core_clr_enabled ())
12139                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12140
12141                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
12142                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
12143                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
12144                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
12145                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
12146                                                         }
12147                                                 }
12148
12149                                                 /* FIXME: SGEN support */
12150                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12151                                                         ip += 6;
12152                                                         if (cfg->verbose_level > 3)
12153                                                                 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));
12154                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
12155                                                                 sp --;
12156                                                                 *sp = handle_ins;
12157                                                                 CHECK_CFG_EXCEPTION;
12158                                                                 ip += 5;
12159                                                                 sp ++;
12160                                                                 break;
12161                                                         }
12162                                                         ip -= 6;
12163                                                 }
12164                                         }
12165                                 }
12166
12167                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
12168                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
12169                                 *sp++ = ins;
12170
12171                                 ip += 6;
12172                                 inline_costs += 10 * num_calls++;
12173                                 break;
12174                         }
12175                         case CEE_LDVIRTFTN: {
12176                                 MonoInst *args [2];
12177
12178                                 CHECK_STACK (1);
12179                                 CHECK_OPSIZE (6);
12180                                 n = read32 (ip + 2);
12181                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
12182                                 CHECK_CFG_ERROR;
12183
12184                                 mono_class_init (cmethod->klass);
12185
12186                                 context_used = mini_method_check_context_used (cfg, cmethod);
12187
12188                                 if (mono_security_core_clr_enabled ())
12189                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
12190
12191                                 /*
12192                                  * Optimize the common case of ldvirtftn+delegate creation
12193                                  */
12194                                 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)) {
12195                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
12196                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
12197                                                 MonoInst *target_ins, *handle_ins;
12198                                                 MonoMethod *invoke;
12199                                                 int invoke_context_used;
12200                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
12201
12202                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
12203                                                 if (!invoke || !mono_method_signature (invoke))
12204                                                         LOAD_ERROR;
12205
12206                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
12207
12208                                                 target_ins = sp [-1];
12209
12210                                                 if (mono_security_core_clr_enabled ())
12211                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
12212
12213                                                 /* FIXME: SGEN support */
12214                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
12215                                                         ip += 6;
12216                                                         if (cfg->verbose_level > 3)
12217                                                                 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));
12218                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
12219                                                                 sp -= 2;
12220                                                                 *sp = handle_ins;
12221                                                                 CHECK_CFG_EXCEPTION;
12222                                                                 ip += 5;
12223                                                                 sp ++;
12224                                                                 break;
12225                                                         }
12226                                                         ip -= 6;
12227                                                 }
12228                                         }
12229                                 }
12230
12231                                 --sp;
12232                                 args [0] = *sp;
12233
12234                                 args [1] = emit_get_rgctx_method (cfg, context_used,
12235                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
12236
12237                                 if (context_used)
12238                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
12239                                 else
12240                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
12241
12242                                 ip += 6;
12243                                 inline_costs += 10 * num_calls++;
12244                                 break;
12245                         }
12246                         case CEE_LDARG:
12247                                 CHECK_STACK_OVF (1);
12248                                 CHECK_OPSIZE (4);
12249                                 n = read16 (ip + 2);
12250                                 CHECK_ARG (n);
12251                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
12252                                 *sp++ = ins;
12253                                 ip += 4;
12254                                 break;
12255                         case CEE_LDARGA:
12256                                 CHECK_STACK_OVF (1);
12257                                 CHECK_OPSIZE (4);
12258                                 n = read16 (ip + 2);
12259                                 CHECK_ARG (n);
12260                                 NEW_ARGLOADA (cfg, ins, n);
12261                                 MONO_ADD_INS (cfg->cbb, ins);
12262                                 *sp++ = ins;
12263                                 ip += 4;
12264                                 break;
12265                         case CEE_STARG:
12266                                 CHECK_STACK (1);
12267                                 --sp;
12268                                 CHECK_OPSIZE (4);
12269                                 n = read16 (ip + 2);
12270                                 CHECK_ARG (n);
12271                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
12272                                         UNVERIFIED;
12273                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
12274                                 ip += 4;
12275                                 break;
12276                         case CEE_LDLOC:
12277                                 CHECK_STACK_OVF (1);
12278                                 CHECK_OPSIZE (4);
12279                                 n = read16 (ip + 2);
12280                                 CHECK_LOCAL (n);
12281                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
12282                                 *sp++ = ins;
12283                                 ip += 4;
12284                                 break;
12285                         case CEE_LDLOCA: {
12286                                 unsigned char *tmp_ip;
12287                                 CHECK_STACK_OVF (1);
12288                                 CHECK_OPSIZE (4);
12289                                 n = read16 (ip + 2);
12290                                 CHECK_LOCAL (n);
12291
12292                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
12293                                         ip = tmp_ip;
12294                                         inline_costs += 1;
12295                                         break;
12296                                 }
12297
12298                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
12299                                 *sp++ = ins;
12300                                 ip += 4;
12301                                 break;
12302                         }
12303                         case CEE_STLOC:
12304                                 CHECK_STACK (1);
12305                                 --sp;
12306                                 CHECK_OPSIZE (4);
12307                                 n = read16 (ip + 2);
12308                                 CHECK_LOCAL (n);
12309                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
12310                                         UNVERIFIED;
12311                                 emit_stloc_ir (cfg, sp, header, n);
12312                                 ip += 4;
12313                                 inline_costs += 1;
12314                                 break;
12315                         case CEE_LOCALLOC: {
12316                                 CHECK_STACK (1);
12317                                 MonoBasicBlock *non_zero_bb, *end_bb;
12318                                 int alloc_ptr = alloc_preg (cfg);
12319                                 --sp;
12320                                 if (sp != stack_start)
12321                                         UNVERIFIED;
12322                                 if (cfg->method != method)
12323                                         /*
12324                                          * Inlining this into a loop in a parent could lead to
12325                                          * stack overflows which is different behavior than the
12326                                          * non-inlined case, thus disable inlining in this case.
12327                                          */
12328                                         INLINE_FAILURE("localloc");
12329
12330                                 NEW_BBLOCK (cfg, non_zero_bb);
12331                                 NEW_BBLOCK (cfg, end_bb);
12332
12333                                 /* if size != zero */
12334                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
12335                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_zero_bb);
12336
12337                                 //size is zero, so result is NULL
12338                                 MONO_EMIT_NEW_PCONST (cfg, alloc_ptr, NULL);
12339                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12340
12341                                 MONO_START_BB (cfg, non_zero_bb);
12342                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
12343                                 ins->dreg = alloc_ptr;
12344                                 ins->sreg1 = sp [0]->dreg;
12345                                 ins->type = STACK_PTR;
12346                                 MONO_ADD_INS (cfg->cbb, ins);
12347
12348                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12349                                 if (init_locals)
12350                                         ins->flags |= MONO_INST_INIT;
12351
12352                                 MONO_START_BB (cfg, end_bb);
12353                                 EMIT_NEW_UNALU (cfg, ins, OP_MOVE, alloc_preg (cfg), alloc_ptr);
12354                                 ins->type = STACK_PTR;
12355
12356                                 *sp++ = ins;
12357                                 ip += 2;
12358                                 break;
12359                         }
12360                         case CEE_ENDFILTER: {
12361                                 MonoExceptionClause *clause, *nearest;
12362                                 int cc;
12363
12364                                 CHECK_STACK (1);
12365                                 --sp;
12366                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
12367                                         UNVERIFIED;
12368                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
12369                                 ins->sreg1 = (*sp)->dreg;
12370                                 MONO_ADD_INS (cfg->cbb, ins);
12371                                 start_new_bblock = 1;
12372                                 ip += 2;
12373
12374                                 nearest = NULL;
12375                                 for (cc = 0; cc < header->num_clauses; ++cc) {
12376                                         clause = &header->clauses [cc];
12377                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
12378                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
12379                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
12380                                                 nearest = clause;
12381                                 }
12382                                 g_assert (nearest);
12383                                 if ((ip - header->code) != nearest->handler_offset)
12384                                         UNVERIFIED;
12385
12386                                 break;
12387                         }
12388                         case CEE_UNALIGNED_:
12389                                 ins_flag |= MONO_INST_UNALIGNED;
12390                                 /* FIXME: record alignment? we can assume 1 for now */
12391                                 CHECK_OPSIZE (3);
12392                                 ip += 3;
12393                                 break;
12394                         case CEE_VOLATILE_:
12395                                 ins_flag |= MONO_INST_VOLATILE;
12396                                 ip += 2;
12397                                 break;
12398                         case CEE_TAIL_:
12399                                 ins_flag   |= MONO_INST_TAILCALL;
12400                                 cfg->flags |= MONO_CFG_HAS_TAIL;
12401                                 /* Can't inline tail calls at this time */
12402                                 inline_costs += 100000;
12403                                 ip += 2;
12404                                 break;
12405                         case CEE_INITOBJ:
12406                                 CHECK_STACK (1);
12407                                 --sp;
12408                                 CHECK_OPSIZE (6);
12409                                 token = read32 (ip + 2);
12410                                 klass = mini_get_class (method, token, generic_context);
12411                                 CHECK_TYPELOAD (klass);
12412                                 if (generic_class_is_reference_type (cfg, klass))
12413                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
12414                                 else
12415                                         mini_emit_initobj (cfg, *sp, NULL, klass);
12416                                 ip += 6;
12417                                 inline_costs += 1;
12418                                 break;
12419                         case CEE_CONSTRAINED_:
12420                                 CHECK_OPSIZE (6);
12421                                 token = read32 (ip + 2);
12422                                 constrained_class = mini_get_class (method, token, generic_context);
12423                                 CHECK_TYPELOAD (constrained_class);
12424                                 ip += 6;
12425                                 break;
12426                         case CEE_CPBLK:
12427                                 CHECK_STACK (3);
12428                                 sp -= 3;
12429                                 mini_emit_memory_copy_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12430                                 ip += 2;
12431                                 ins_flag = 0;
12432                                 inline_costs += 1;
12433                                 break;
12434                         case CEE_INITBLK:
12435                                 CHECK_STACK (3);
12436                                 sp -= 3;
12437                                 mini_emit_memory_init_bytes (cfg, sp [0], sp [1], sp [2], ins_flag);
12438                                 ip += 2;
12439                                 ins_flag = 0;
12440                                 inline_costs += 1;
12441                                 break;
12442                         case CEE_NO_:
12443                                 CHECK_OPSIZE (3);
12444                                 if (ip [2] & 0x1)
12445                                         ins_flag |= MONO_INST_NOTYPECHECK;
12446                                 if (ip [2] & 0x2)
12447                                         ins_flag |= MONO_INST_NORANGECHECK;
12448                                 /* we ignore the no-nullcheck for now since we
12449                                  * really do it explicitly only when doing callvirt->call
12450                                  */
12451                                 ip += 3;
12452                                 break;
12453                         case CEE_RETHROW: {
12454                                 MonoInst *load;
12455                                 int handler_offset = -1;
12456
12457                                 for (i = 0; i < header->num_clauses; ++i) {
12458                                         MonoExceptionClause *clause = &header->clauses [i];
12459                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
12460                                                 handler_offset = clause->handler_offset;
12461                                                 break;
12462                                         }
12463                                 }
12464
12465                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
12466
12467                                 if (handler_offset == -1)
12468                                         UNVERIFIED;
12469
12470                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
12471                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
12472                                 ins->sreg1 = load->dreg;
12473                                 MONO_ADD_INS (cfg->cbb, ins);
12474
12475                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12476                                 MONO_ADD_INS (cfg->cbb, ins);
12477
12478                                 sp = stack_start;
12479                                 link_bblock (cfg, cfg->cbb, end_bblock);
12480                                 start_new_bblock = 1;
12481                                 ip += 2;
12482                                 break;
12483                         }
12484                         case CEE_SIZEOF: {
12485                                 guint32 val;
12486                                 int ialign;
12487
12488                                 CHECK_STACK_OVF (1);
12489                                 CHECK_OPSIZE (6);
12490                                 token = read32 (ip + 2);
12491                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
12492                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
12493                                         CHECK_CFG_ERROR;
12494
12495                                         val = mono_type_size (type, &ialign);
12496                                 } else {
12497                                         MonoClass *klass = mini_get_class (method, token, generic_context);
12498                                         CHECK_TYPELOAD (klass);
12499
12500                                         val = mono_type_size (&klass->byval_arg, &ialign);
12501
12502                                         if (mini_is_gsharedvt_klass (klass))
12503                                                 GSHAREDVT_FAILURE (*ip);
12504                                 }
12505                                 EMIT_NEW_ICONST (cfg, ins, val);
12506                                 *sp++= ins;
12507                                 ip += 6;
12508                                 break;
12509                         }
12510                         case CEE_REFANYTYPE: {
12511                                 MonoInst *src_var, *src;
12512
12513                                 GSHAREDVT_FAILURE (*ip);
12514
12515                                 CHECK_STACK (1);
12516                                 --sp;
12517
12518                                 // FIXME:
12519                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12520                                 if (!src_var)
12521                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12522                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12523                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
12524                                 *sp++ = ins;
12525                                 ip += 2;
12526                                 break;
12527                         }
12528                         case CEE_READONLY_:
12529                                 readonly = TRUE;
12530                                 ip += 2;
12531                                 break;
12532
12533                         case CEE_UNUSED56:
12534                         case CEE_UNUSED57:
12535                         case CEE_UNUSED70:
12536                         case CEE_UNUSED:
12537                         case CEE_UNUSED99:
12538                                 UNVERIFIED;
12539
12540                         default:
12541                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
12542                                 UNVERIFIED;
12543                         }
12544                         break;
12545                 }
12546                 case CEE_UNUSED58:
12547                 case CEE_UNUSED1:
12548                         UNVERIFIED;
12549
12550                 default:
12551                         g_warning ("opcode 0x%02x not handled", *ip);
12552                         UNVERIFIED;
12553                 }
12554         }
12555         if (start_new_bblock != 1)
12556                 UNVERIFIED;
12557
12558         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
12559         if (cfg->cbb->next_bb) {
12560                 /* This could already be set because of inlining, #693905 */
12561                 MonoBasicBlock *bb = cfg->cbb;
12562
12563                 while (bb->next_bb)
12564                         bb = bb->next_bb;
12565                 bb->next_bb = end_bblock;
12566         } else {
12567                 cfg->cbb->next_bb = end_bblock;
12568         }
12569
12570         if (cfg->method == method && cfg->domainvar) {
12571                 MonoInst *store;
12572                 MonoInst *get_domain;
12573
12574                 cfg->cbb = init_localsbb;
12575
12576                 get_domain = mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
12577                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
12578                 MONO_ADD_INS (cfg->cbb, store);
12579         }
12580
12581 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
12582         if (cfg->compile_aot)
12583                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
12584                 mono_get_got_var (cfg);
12585 #endif
12586
12587         if (cfg->method == method && cfg->got_var)
12588                 mono_emit_load_got_addr (cfg);
12589
12590         if (init_localsbb) {
12591                 cfg->cbb = init_localsbb;
12592                 cfg->ip = NULL;
12593                 for (i = 0; i < header->num_locals; ++i) {
12594                         emit_init_local (cfg, i, header->locals [i], init_locals);
12595                 }
12596         }
12597
12598         if (cfg->init_ref_vars && cfg->method == method) {
12599                 /* Emit initialization for ref vars */
12600                 // FIXME: Avoid duplication initialization for IL locals.
12601                 for (i = 0; i < cfg->num_varinfo; ++i) {
12602                         MonoInst *ins = cfg->varinfo [i];
12603
12604                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
12605                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
12606                 }
12607         }
12608
12609         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
12610                 cfg->cbb = init_localsbb;
12611                 emit_push_lmf (cfg);
12612         }
12613
12614         cfg->cbb = init_localsbb;
12615         emit_instrumentation_call (cfg, mono_profiler_method_enter);
12616
12617         if (seq_points) {
12618                 MonoBasicBlock *bb;
12619
12620                 /*
12621                  * Make seq points at backward branch targets interruptable.
12622                  */
12623                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
12624                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
12625                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
12626         }
12627
12628         /* Add a sequence point for method entry/exit events */
12629         if (seq_points && cfg->gen_sdb_seq_points) {
12630                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
12631                 MONO_ADD_INS (init_localsbb, ins);
12632                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
12633                 MONO_ADD_INS (cfg->bb_exit, ins);
12634         }
12635
12636         /*
12637          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
12638          * the code they refer to was dead (#11880).
12639          */
12640         if (sym_seq_points) {
12641                 for (i = 0; i < header->code_size; ++i) {
12642                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
12643                                 MonoInst *ins;
12644
12645                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
12646                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
12647                         }
12648                 }
12649         }
12650
12651         cfg->ip = NULL;
12652
12653         if (cfg->method == method) {
12654                 MonoBasicBlock *bb;
12655                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
12656                         if (bb == cfg->bb_init)
12657                                 bb->region = -1;
12658                         else
12659                                 bb->region = mono_find_block_region (cfg, bb->real_offset);
12660                         if (cfg->spvars)
12661                                 mono_create_spvar_for_region (cfg, bb->region);
12662                         if (cfg->verbose_level > 2)
12663                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
12664                 }
12665         } else {
12666                 MonoBasicBlock *bb;
12667                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
12668                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
12669                         bb->real_offset = inline_offset;
12670                 }
12671         }
12672
12673         if (inline_costs < 0) {
12674                 char *mname;
12675
12676                 /* Method is too large */
12677                 mname = mono_method_full_name (method, TRUE);
12678                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
12679                 g_free (mname);
12680         }
12681
12682         if ((cfg->verbose_level > 2) && (cfg->method == method))
12683                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
12684
12685         goto cleanup;
12686
12687 mono_error_exit:
12688         g_assert (!mono_error_ok (&cfg->error));
12689         goto cleanup;
12690
12691  exception_exit:
12692         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
12693         goto cleanup;
12694
12695  unverified:
12696         set_exception_type_from_invalid_il (cfg, method, ip);
12697         goto cleanup;
12698
12699  cleanup:
12700         g_slist_free (class_inits);
12701         mono_basic_block_free (original_bb);
12702         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
12703         if (cfg->exception_type)
12704                 return -1;
12705         else
12706                 return inline_costs;
12707 }
12708
12709 static int
12710 store_membase_reg_to_store_membase_imm (int opcode)
12711 {
12712         switch (opcode) {
12713         case OP_STORE_MEMBASE_REG:
12714                 return OP_STORE_MEMBASE_IMM;
12715         case OP_STOREI1_MEMBASE_REG:
12716                 return OP_STOREI1_MEMBASE_IMM;
12717         case OP_STOREI2_MEMBASE_REG:
12718                 return OP_STOREI2_MEMBASE_IMM;
12719         case OP_STOREI4_MEMBASE_REG:
12720                 return OP_STOREI4_MEMBASE_IMM;
12721         case OP_STOREI8_MEMBASE_REG:
12722                 return OP_STOREI8_MEMBASE_IMM;
12723         default:
12724                 g_assert_not_reached ();
12725         }
12726
12727         return -1;
12728 }
12729
12730 int
12731 mono_op_to_op_imm (int opcode)
12732 {
12733         switch (opcode) {
12734         case OP_IADD:
12735                 return OP_IADD_IMM;
12736         case OP_ISUB:
12737                 return OP_ISUB_IMM;
12738         case OP_IDIV:
12739                 return OP_IDIV_IMM;
12740         case OP_IDIV_UN:
12741                 return OP_IDIV_UN_IMM;
12742         case OP_IREM:
12743                 return OP_IREM_IMM;
12744         case OP_IREM_UN:
12745                 return OP_IREM_UN_IMM;
12746         case OP_IMUL:
12747                 return OP_IMUL_IMM;
12748         case OP_IAND:
12749                 return OP_IAND_IMM;
12750         case OP_IOR:
12751                 return OP_IOR_IMM;
12752         case OP_IXOR:
12753                 return OP_IXOR_IMM;
12754         case OP_ISHL:
12755                 return OP_ISHL_IMM;
12756         case OP_ISHR:
12757                 return OP_ISHR_IMM;
12758         case OP_ISHR_UN:
12759                 return OP_ISHR_UN_IMM;
12760
12761         case OP_LADD:
12762                 return OP_LADD_IMM;
12763         case OP_LSUB:
12764                 return OP_LSUB_IMM;
12765         case OP_LAND:
12766                 return OP_LAND_IMM;
12767         case OP_LOR:
12768                 return OP_LOR_IMM;
12769         case OP_LXOR:
12770                 return OP_LXOR_IMM;
12771         case OP_LSHL:
12772                 return OP_LSHL_IMM;
12773         case OP_LSHR:
12774                 return OP_LSHR_IMM;
12775         case OP_LSHR_UN:
12776                 return OP_LSHR_UN_IMM;
12777 #if SIZEOF_REGISTER == 8
12778         case OP_LREM:
12779                 return OP_LREM_IMM;
12780 #endif
12781
12782         case OP_COMPARE:
12783                 return OP_COMPARE_IMM;
12784         case OP_ICOMPARE:
12785                 return OP_ICOMPARE_IMM;
12786         case OP_LCOMPARE:
12787                 return OP_LCOMPARE_IMM;
12788
12789         case OP_STORE_MEMBASE_REG:
12790                 return OP_STORE_MEMBASE_IMM;
12791         case OP_STOREI1_MEMBASE_REG:
12792                 return OP_STOREI1_MEMBASE_IMM;
12793         case OP_STOREI2_MEMBASE_REG:
12794                 return OP_STOREI2_MEMBASE_IMM;
12795         case OP_STOREI4_MEMBASE_REG:
12796                 return OP_STOREI4_MEMBASE_IMM;
12797
12798 #if defined(TARGET_X86) || defined (TARGET_AMD64)
12799         case OP_X86_PUSH:
12800                 return OP_X86_PUSH_IMM;
12801         case OP_X86_COMPARE_MEMBASE_REG:
12802                 return OP_X86_COMPARE_MEMBASE_IMM;
12803 #endif
12804 #if defined(TARGET_AMD64)
12805         case OP_AMD64_ICOMPARE_MEMBASE_REG:
12806                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
12807 #endif
12808         case OP_VOIDCALL_REG:
12809                 return OP_VOIDCALL;
12810         case OP_CALL_REG:
12811                 return OP_CALL;
12812         case OP_LCALL_REG:
12813                 return OP_LCALL;
12814         case OP_FCALL_REG:
12815                 return OP_FCALL;
12816         case OP_LOCALLOC:
12817                 return OP_LOCALLOC_IMM;
12818         }
12819
12820         return -1;
12821 }
12822
12823 static int
12824 ldind_to_load_membase (int opcode)
12825 {
12826         switch (opcode) {
12827         case CEE_LDIND_I1:
12828                 return OP_LOADI1_MEMBASE;
12829         case CEE_LDIND_U1:
12830                 return OP_LOADU1_MEMBASE;
12831         case CEE_LDIND_I2:
12832                 return OP_LOADI2_MEMBASE;
12833         case CEE_LDIND_U2:
12834                 return OP_LOADU2_MEMBASE;
12835         case CEE_LDIND_I4:
12836                 return OP_LOADI4_MEMBASE;
12837         case CEE_LDIND_U4:
12838                 return OP_LOADU4_MEMBASE;
12839         case CEE_LDIND_I:
12840                 return OP_LOAD_MEMBASE;
12841         case CEE_LDIND_REF:
12842                 return OP_LOAD_MEMBASE;
12843         case CEE_LDIND_I8:
12844                 return OP_LOADI8_MEMBASE;
12845         case CEE_LDIND_R4:
12846                 return OP_LOADR4_MEMBASE;
12847         case CEE_LDIND_R8:
12848                 return OP_LOADR8_MEMBASE;
12849         default:
12850                 g_assert_not_reached ();
12851         }
12852
12853         return -1;
12854 }
12855
12856 static int
12857 stind_to_store_membase (int opcode)
12858 {
12859         switch (opcode) {
12860         case CEE_STIND_I1:
12861                 return OP_STOREI1_MEMBASE_REG;
12862         case CEE_STIND_I2:
12863                 return OP_STOREI2_MEMBASE_REG;
12864         case CEE_STIND_I4:
12865                 return OP_STOREI4_MEMBASE_REG;
12866         case CEE_STIND_I:
12867         case CEE_STIND_REF:
12868                 return OP_STORE_MEMBASE_REG;
12869         case CEE_STIND_I8:
12870                 return OP_STOREI8_MEMBASE_REG;
12871         case CEE_STIND_R4:
12872                 return OP_STORER4_MEMBASE_REG;
12873         case CEE_STIND_R8:
12874                 return OP_STORER8_MEMBASE_REG;
12875         default:
12876                 g_assert_not_reached ();
12877         }
12878
12879         return -1;
12880 }
12881
12882 int
12883 mono_load_membase_to_load_mem (int opcode)
12884 {
12885         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
12886 #if defined(TARGET_X86) || defined(TARGET_AMD64)
12887         switch (opcode) {
12888         case OP_LOAD_MEMBASE:
12889                 return OP_LOAD_MEM;
12890         case OP_LOADU1_MEMBASE:
12891                 return OP_LOADU1_MEM;
12892         case OP_LOADU2_MEMBASE:
12893                 return OP_LOADU2_MEM;
12894         case OP_LOADI4_MEMBASE:
12895                 return OP_LOADI4_MEM;
12896         case OP_LOADU4_MEMBASE:
12897                 return OP_LOADU4_MEM;
12898 #if SIZEOF_REGISTER == 8
12899         case OP_LOADI8_MEMBASE:
12900                 return OP_LOADI8_MEM;
12901 #endif
12902         }
12903 #endif
12904
12905         return -1;
12906 }
12907
12908 static inline int
12909 op_to_op_dest_membase (int store_opcode, int opcode)
12910 {
12911 #if defined(TARGET_X86)
12912         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
12913                 return -1;
12914
12915         switch (opcode) {
12916         case OP_IADD:
12917                 return OP_X86_ADD_MEMBASE_REG;
12918         case OP_ISUB:
12919                 return OP_X86_SUB_MEMBASE_REG;
12920         case OP_IAND:
12921                 return OP_X86_AND_MEMBASE_REG;
12922         case OP_IOR:
12923                 return OP_X86_OR_MEMBASE_REG;
12924         case OP_IXOR:
12925                 return OP_X86_XOR_MEMBASE_REG;
12926         case OP_ADD_IMM:
12927         case OP_IADD_IMM:
12928                 return OP_X86_ADD_MEMBASE_IMM;
12929         case OP_SUB_IMM:
12930         case OP_ISUB_IMM:
12931                 return OP_X86_SUB_MEMBASE_IMM;
12932         case OP_AND_IMM:
12933         case OP_IAND_IMM:
12934                 return OP_X86_AND_MEMBASE_IMM;
12935         case OP_OR_IMM:
12936         case OP_IOR_IMM:
12937                 return OP_X86_OR_MEMBASE_IMM;
12938         case OP_XOR_IMM:
12939         case OP_IXOR_IMM:
12940                 return OP_X86_XOR_MEMBASE_IMM;
12941         case OP_MOVE:
12942                 return OP_NOP;
12943         }
12944 #endif
12945
12946 #if defined(TARGET_AMD64)
12947         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
12948                 return -1;
12949
12950         switch (opcode) {
12951         case OP_IADD:
12952                 return OP_X86_ADD_MEMBASE_REG;
12953         case OP_ISUB:
12954                 return OP_X86_SUB_MEMBASE_REG;
12955         case OP_IAND:
12956                 return OP_X86_AND_MEMBASE_REG;
12957         case OP_IOR:
12958                 return OP_X86_OR_MEMBASE_REG;
12959         case OP_IXOR:
12960                 return OP_X86_XOR_MEMBASE_REG;
12961         case OP_IADD_IMM:
12962                 return OP_X86_ADD_MEMBASE_IMM;
12963         case OP_ISUB_IMM:
12964                 return OP_X86_SUB_MEMBASE_IMM;
12965         case OP_IAND_IMM:
12966                 return OP_X86_AND_MEMBASE_IMM;
12967         case OP_IOR_IMM:
12968                 return OP_X86_OR_MEMBASE_IMM;
12969         case OP_IXOR_IMM:
12970                 return OP_X86_XOR_MEMBASE_IMM;
12971         case OP_LADD:
12972                 return OP_AMD64_ADD_MEMBASE_REG;
12973         case OP_LSUB:
12974                 return OP_AMD64_SUB_MEMBASE_REG;
12975         case OP_LAND:
12976                 return OP_AMD64_AND_MEMBASE_REG;
12977         case OP_LOR:
12978                 return OP_AMD64_OR_MEMBASE_REG;
12979         case OP_LXOR:
12980                 return OP_AMD64_XOR_MEMBASE_REG;
12981         case OP_ADD_IMM:
12982         case OP_LADD_IMM:
12983                 return OP_AMD64_ADD_MEMBASE_IMM;
12984         case OP_SUB_IMM:
12985         case OP_LSUB_IMM:
12986                 return OP_AMD64_SUB_MEMBASE_IMM;
12987         case OP_AND_IMM:
12988         case OP_LAND_IMM:
12989                 return OP_AMD64_AND_MEMBASE_IMM;
12990         case OP_OR_IMM:
12991         case OP_LOR_IMM:
12992                 return OP_AMD64_OR_MEMBASE_IMM;
12993         case OP_XOR_IMM:
12994         case OP_LXOR_IMM:
12995                 return OP_AMD64_XOR_MEMBASE_IMM;
12996         case OP_MOVE:
12997                 return OP_NOP;
12998         }
12999 #endif
13000
13001         return -1;
13002 }
13003
13004 static inline int
13005 op_to_op_store_membase (int store_opcode, int opcode)
13006 {
13007 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13008         switch (opcode) {
13009         case OP_ICEQ:
13010                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13011                         return OP_X86_SETEQ_MEMBASE;
13012         case OP_CNE:
13013                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13014                         return OP_X86_SETNE_MEMBASE;
13015         }
13016 #endif
13017
13018         return -1;
13019 }
13020
13021 static inline int
13022 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13023 {
13024 #ifdef TARGET_X86
13025         /* FIXME: This has sign extension issues */
13026         /*
13027         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13028                 return OP_X86_COMPARE_MEMBASE8_IMM;
13029         */
13030
13031         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13032                 return -1;
13033
13034         switch (opcode) {
13035         case OP_X86_PUSH:
13036                 return OP_X86_PUSH_MEMBASE;
13037         case OP_COMPARE_IMM:
13038         case OP_ICOMPARE_IMM:
13039                 return OP_X86_COMPARE_MEMBASE_IMM;
13040         case OP_COMPARE:
13041         case OP_ICOMPARE:
13042                 return OP_X86_COMPARE_MEMBASE_REG;
13043         }
13044 #endif
13045
13046 #ifdef TARGET_AMD64
13047         /* FIXME: This has sign extension issues */
13048         /*
13049         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13050                 return OP_X86_COMPARE_MEMBASE8_IMM;
13051         */
13052
13053         switch (opcode) {
13054         case OP_X86_PUSH:
13055                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13056                         return OP_X86_PUSH_MEMBASE;
13057                 break;
13058                 /* FIXME: This only works for 32 bit immediates
13059         case OP_COMPARE_IMM:
13060         case OP_LCOMPARE_IMM:
13061                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
13062                         return OP_AMD64_COMPARE_MEMBASE_IMM;
13063                 */
13064         case OP_ICOMPARE_IMM:
13065                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13066                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13067                 break;
13068         case OP_COMPARE:
13069         case OP_LCOMPARE:
13070                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
13071                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13072                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13073                         return OP_AMD64_COMPARE_MEMBASE_REG;
13074                 break;
13075         case OP_ICOMPARE:
13076                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
13077                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
13078                 break;
13079         }
13080 #endif
13081
13082         return -1;
13083 }
13084
13085 static inline int
13086 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
13087 {
13088 #ifdef TARGET_X86
13089         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13090                 return -1;
13091
13092         switch (opcode) {
13093         case OP_COMPARE:
13094         case OP_ICOMPARE:
13095                 return OP_X86_COMPARE_REG_MEMBASE;
13096         case OP_IADD:
13097                 return OP_X86_ADD_REG_MEMBASE;
13098         case OP_ISUB:
13099                 return OP_X86_SUB_REG_MEMBASE;
13100         case OP_IAND:
13101                 return OP_X86_AND_REG_MEMBASE;
13102         case OP_IOR:
13103                 return OP_X86_OR_REG_MEMBASE;
13104         case OP_IXOR:
13105                 return OP_X86_XOR_REG_MEMBASE;
13106         }
13107 #endif
13108
13109 #ifdef TARGET_AMD64
13110         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
13111                 switch (opcode) {
13112                 case OP_ICOMPARE:
13113                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
13114                 case OP_IADD:
13115                         return OP_X86_ADD_REG_MEMBASE;
13116                 case OP_ISUB:
13117                         return OP_X86_SUB_REG_MEMBASE;
13118                 case OP_IAND:
13119                         return OP_X86_AND_REG_MEMBASE;
13120                 case OP_IOR:
13121                         return OP_X86_OR_REG_MEMBASE;
13122                 case OP_IXOR:
13123                         return OP_X86_XOR_REG_MEMBASE;
13124                 }
13125         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
13126                 switch (opcode) {
13127                 case OP_COMPARE:
13128                 case OP_LCOMPARE:
13129                         return OP_AMD64_COMPARE_REG_MEMBASE;
13130                 case OP_LADD:
13131                         return OP_AMD64_ADD_REG_MEMBASE;
13132                 case OP_LSUB:
13133                         return OP_AMD64_SUB_REG_MEMBASE;
13134                 case OP_LAND:
13135                         return OP_AMD64_AND_REG_MEMBASE;
13136                 case OP_LOR:
13137                         return OP_AMD64_OR_REG_MEMBASE;
13138                 case OP_LXOR:
13139                         return OP_AMD64_XOR_REG_MEMBASE;
13140                 }
13141         }
13142 #endif
13143
13144         return -1;
13145 }
13146
13147 int
13148 mono_op_to_op_imm_noemul (int opcode)
13149 {
13150         switch (opcode) {
13151 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
13152         case OP_LSHR:
13153         case OP_LSHL:
13154         case OP_LSHR_UN:
13155                 return -1;
13156 #endif
13157 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
13158         case OP_IDIV:
13159         case OP_IDIV_UN:
13160         case OP_IREM:
13161         case OP_IREM_UN:
13162                 return -1;
13163 #endif
13164 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
13165         case OP_IMUL:
13166                 return -1;
13167 #endif
13168         default:
13169                 return mono_op_to_op_imm (opcode);
13170         }
13171 }
13172
13173 /**
13174  * mono_handle_global_vregs:
13175  *
13176  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
13177  * for them.
13178  */
13179 void
13180 mono_handle_global_vregs (MonoCompile *cfg)
13181 {
13182         gint32 *vreg_to_bb;
13183         MonoBasicBlock *bb;
13184         int i, pos;
13185
13186         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
13187
13188 #ifdef MONO_ARCH_SIMD_INTRINSICS
13189         if (cfg->uses_simd_intrinsics)
13190                 mono_simd_simplify_indirection (cfg);
13191 #endif
13192
13193         /* Find local vregs used in more than one bb */
13194         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13195                 MonoInst *ins = bb->code;
13196                 int block_num = bb->block_num;
13197
13198                 if (cfg->verbose_level > 2)
13199                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
13200
13201                 cfg->cbb = bb;
13202                 for (; ins; ins = ins->next) {
13203                         const char *spec = INS_INFO (ins->opcode);
13204                         int regtype = 0, regindex;
13205                         gint32 prev_bb;
13206
13207                         if (G_UNLIKELY (cfg->verbose_level > 2))
13208                                 mono_print_ins (ins);
13209
13210                         g_assert (ins->opcode >= MONO_CEE_LAST);
13211
13212                         for (regindex = 0; regindex < 4; regindex ++) {
13213                                 int vreg = 0;
13214
13215                                 if (regindex == 0) {
13216                                         regtype = spec [MONO_INST_DEST];
13217                                         if (regtype == ' ')
13218                                                 continue;
13219                                         vreg = ins->dreg;
13220                                 } else if (regindex == 1) {
13221                                         regtype = spec [MONO_INST_SRC1];
13222                                         if (regtype == ' ')
13223                                                 continue;
13224                                         vreg = ins->sreg1;
13225                                 } else if (regindex == 2) {
13226                                         regtype = spec [MONO_INST_SRC2];
13227                                         if (regtype == ' ')
13228                                                 continue;
13229                                         vreg = ins->sreg2;
13230                                 } else if (regindex == 3) {
13231                                         regtype = spec [MONO_INST_SRC3];
13232                                         if (regtype == ' ')
13233                                                 continue;
13234                                         vreg = ins->sreg3;
13235                                 }
13236
13237 #if SIZEOF_REGISTER == 4
13238                                 /* In the LLVM case, the long opcodes are not decomposed */
13239                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
13240                                         /*
13241                                          * Since some instructions reference the original long vreg,
13242                                          * and some reference the two component vregs, it is quite hard
13243                                          * to determine when it needs to be global. So be conservative.
13244                                          */
13245                                         if (!get_vreg_to_inst (cfg, vreg)) {
13246                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13247
13248                                                 if (cfg->verbose_level > 2)
13249                                                         printf ("LONG VREG R%d made global.\n", vreg);
13250                                         }
13251
13252                                         /*
13253                                          * Make the component vregs volatile since the optimizations can
13254                                          * get confused otherwise.
13255                                          */
13256                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
13257                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
13258                                 }
13259 #endif
13260
13261                                 g_assert (vreg != -1);
13262
13263                                 prev_bb = vreg_to_bb [vreg];
13264                                 if (prev_bb == 0) {
13265                                         /* 0 is a valid block num */
13266                                         vreg_to_bb [vreg] = block_num + 1;
13267                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
13268                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
13269                                                 continue;
13270
13271                                         if (!get_vreg_to_inst (cfg, vreg)) {
13272                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13273                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
13274
13275                                                 switch (regtype) {
13276                                                 case 'i':
13277                                                         if (vreg_is_ref (cfg, vreg))
13278                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
13279                                                         else
13280                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
13281                                                         break;
13282                                                 case 'l':
13283                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
13284                                                         break;
13285                                                 case 'f':
13286                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
13287                                                         break;
13288                                                 case 'v':
13289                                                 case 'x':
13290                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
13291                                                         break;
13292                                                 default:
13293                                                         g_assert_not_reached ();
13294                                                 }
13295                                         }
13296
13297                                         /* Flag as having been used in more than one bb */
13298                                         vreg_to_bb [vreg] = -1;
13299                                 }
13300                         }
13301                 }
13302         }
13303
13304         /* If a variable is used in only one bblock, convert it into a local vreg */
13305         for (i = 0; i < cfg->num_varinfo; i++) {
13306                 MonoInst *var = cfg->varinfo [i];
13307                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
13308
13309                 switch (var->type) {
13310                 case STACK_I4:
13311                 case STACK_OBJ:
13312                 case STACK_PTR:
13313                 case STACK_MP:
13314                 case STACK_VTYPE:
13315 #if SIZEOF_REGISTER == 8
13316                 case STACK_I8:
13317 #endif
13318 #if !defined(TARGET_X86)
13319                 /* Enabling this screws up the fp stack on x86 */
13320                 case STACK_R8:
13321 #endif
13322                         if (mono_arch_is_soft_float ())
13323                                 break;
13324
13325                         /*
13326                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
13327                                 break;
13328                         */
13329
13330                         /* Arguments are implicitly global */
13331                         /* Putting R4 vars into registers doesn't work currently */
13332                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
13333                         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) {
13334                                 /*
13335                                  * Make that the variable's liveness interval doesn't contain a call, since
13336                                  * that would cause the lvreg to be spilled, making the whole optimization
13337                                  * useless.
13338                                  */
13339                                 /* This is too slow for JIT compilation */
13340 #if 0
13341                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
13342                                         MonoInst *ins;
13343                                         int def_index, call_index, ins_index;
13344                                         gboolean spilled = FALSE;
13345
13346                                         def_index = -1;
13347                                         call_index = -1;
13348                                         ins_index = 0;
13349                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
13350                                                 const char *spec = INS_INFO (ins->opcode);
13351
13352                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
13353                                                         def_index = ins_index;
13354
13355                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
13356                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
13357                                                         if (call_index > def_index) {
13358                                                                 spilled = TRUE;
13359                                                                 break;
13360                                                         }
13361                                                 }
13362
13363                                                 if (MONO_IS_CALL (ins))
13364                                                         call_index = ins_index;
13365
13366                                                 ins_index ++;
13367                                         }
13368
13369                                         if (spilled)
13370                                                 break;
13371                                 }
13372 #endif
13373
13374                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13375                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
13376                                 var->flags |= MONO_INST_IS_DEAD;
13377                                 cfg->vreg_to_inst [var->dreg] = NULL;
13378                         }
13379                         break;
13380                 }
13381         }
13382
13383         /*
13384          * Compress the varinfo and vars tables so the liveness computation is faster and
13385          * takes up less space.
13386          */
13387         pos = 0;
13388         for (i = 0; i < cfg->num_varinfo; ++i) {
13389                 MonoInst *var = cfg->varinfo [i];
13390                 if (pos < i && cfg->locals_start == i)
13391                         cfg->locals_start = pos;
13392                 if (!(var->flags & MONO_INST_IS_DEAD)) {
13393                         if (pos < i) {
13394                                 cfg->varinfo [pos] = cfg->varinfo [i];
13395                                 cfg->varinfo [pos]->inst_c0 = pos;
13396                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
13397                                 cfg->vars [pos].idx = pos;
13398 #if SIZEOF_REGISTER == 4
13399                                 if (cfg->varinfo [pos]->type == STACK_I8) {
13400                                         /* Modify the two component vars too */
13401                                         MonoInst *var1;
13402
13403                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
13404                                         var1->inst_c0 = pos;
13405                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
13406                                         var1->inst_c0 = pos;
13407                                 }
13408 #endif
13409                         }
13410                         pos ++;
13411                 }
13412         }
13413         cfg->num_varinfo = pos;
13414         if (cfg->locals_start > cfg->num_varinfo)
13415                 cfg->locals_start = cfg->num_varinfo;
13416 }
13417
13418 /*
13419  * mono_allocate_gsharedvt_vars:
13420  *
13421  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
13422  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
13423  */
13424 void
13425 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
13426 {
13427         int i;
13428
13429         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
13430
13431         for (i = 0; i < cfg->num_varinfo; ++i) {
13432                 MonoInst *ins = cfg->varinfo [i];
13433                 int idx;
13434
13435                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
13436                         if (i >= cfg->locals_start) {
13437                                 /* Local */
13438                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
13439                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
13440                                 ins->opcode = OP_GSHAREDVT_LOCAL;
13441                                 ins->inst_imm = idx;
13442                         } else {
13443                                 /* Arg */
13444                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
13445                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
13446                         }
13447                 }
13448         }
13449 }
13450
13451 /**
13452  * mono_spill_global_vars:
13453  *
13454  *   Generate spill code for variables which are not allocated to registers,
13455  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
13456  * code is generated which could be optimized by the local optimization passes.
13457  */
13458 void
13459 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
13460 {
13461         MonoBasicBlock *bb;
13462         char spec2 [16];
13463         int orig_next_vreg;
13464         guint32 *vreg_to_lvreg;
13465         guint32 *lvregs;
13466         guint32 i, lvregs_len, lvregs_size;
13467         gboolean dest_has_lvreg = FALSE;
13468         MonoStackType stacktypes [128];
13469         MonoInst **live_range_start, **live_range_end;
13470         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
13471
13472         *need_local_opts = FALSE;
13473
13474         memset (spec2, 0, sizeof (spec2));
13475
13476         /* FIXME: Move this function to mini.c */
13477         stacktypes ['i'] = STACK_PTR;
13478         stacktypes ['l'] = STACK_I8;
13479         stacktypes ['f'] = STACK_R8;
13480 #ifdef MONO_ARCH_SIMD_INTRINSICS
13481         stacktypes ['x'] = STACK_VTYPE;
13482 #endif
13483
13484 #if SIZEOF_REGISTER == 4
13485         /* Create MonoInsts for longs */
13486         for (i = 0; i < cfg->num_varinfo; i++) {
13487                 MonoInst *ins = cfg->varinfo [i];
13488
13489                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
13490                         switch (ins->type) {
13491                         case STACK_R8:
13492                         case STACK_I8: {
13493                                 MonoInst *tree;
13494
13495                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
13496                                         break;
13497
13498                                 g_assert (ins->opcode == OP_REGOFFSET);
13499
13500                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
13501                                 g_assert (tree);
13502                                 tree->opcode = OP_REGOFFSET;
13503                                 tree->inst_basereg = ins->inst_basereg;
13504                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
13505
13506                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
13507                                 g_assert (tree);
13508                                 tree->opcode = OP_REGOFFSET;
13509                                 tree->inst_basereg = ins->inst_basereg;
13510                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
13511                                 break;
13512                         }
13513                         default:
13514                                 break;
13515                         }
13516                 }
13517         }
13518 #endif
13519
13520         if (cfg->compute_gc_maps) {
13521                 /* registers need liveness info even for !non refs */
13522                 for (i = 0; i < cfg->num_varinfo; i++) {
13523                         MonoInst *ins = cfg->varinfo [i];
13524
13525                         if (ins->opcode == OP_REGVAR)
13526                                 ins->flags |= MONO_INST_GC_TRACK;
13527                 }
13528         }
13529
13530         /* FIXME: widening and truncation */
13531
13532         /*
13533          * As an optimization, when a variable allocated to the stack is first loaded into
13534          * an lvreg, we will remember the lvreg and use it the next time instead of loading
13535          * the variable again.
13536          */
13537         orig_next_vreg = cfg->next_vreg;
13538         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
13539         lvregs_size = 1024;
13540         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * lvregs_size);
13541         lvregs_len = 0;
13542
13543         /*
13544          * These arrays contain the first and last instructions accessing a given
13545          * variable.
13546          * Since we emit bblocks in the same order we process them here, and we
13547          * don't split live ranges, these will precisely describe the live range of
13548          * the variable, i.e. the instruction range where a valid value can be found
13549          * in the variables location.
13550          * The live range is computed using the liveness info computed by the liveness pass.
13551          * We can't use vmv->range, since that is an abstract live range, and we need
13552          * one which is instruction precise.
13553          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
13554          */
13555         /* FIXME: Only do this if debugging info is requested */
13556         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
13557         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
13558         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13559         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
13560
13561         /* Add spill loads/stores */
13562         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13563                 MonoInst *ins;
13564
13565                 if (cfg->verbose_level > 2)
13566                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
13567
13568                 /* Clear vreg_to_lvreg array */
13569                 for (i = 0; i < lvregs_len; i++)
13570                         vreg_to_lvreg [lvregs [i]] = 0;
13571                 lvregs_len = 0;
13572
13573                 cfg->cbb = bb;
13574                 MONO_BB_FOR_EACH_INS (bb, ins) {
13575                         const char *spec = INS_INFO (ins->opcode);
13576                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
13577                         gboolean store, no_lvreg;
13578                         int sregs [MONO_MAX_SRC_REGS];
13579
13580                         if (G_UNLIKELY (cfg->verbose_level > 2))
13581                                 mono_print_ins (ins);
13582
13583                         if (ins->opcode == OP_NOP)
13584                                 continue;
13585
13586                         /*
13587                          * We handle LDADDR here as well, since it can only be decomposed
13588                          * when variable addresses are known.
13589                          */
13590                         if (ins->opcode == OP_LDADDR) {
13591                                 MonoInst *var = (MonoInst *)ins->inst_p0;
13592
13593                                 if (var->opcode == OP_VTARG_ADDR) {
13594                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
13595                                         MonoInst *vtaddr = var->inst_left;
13596                                         if (vtaddr->opcode == OP_REGVAR) {
13597                                                 ins->opcode = OP_MOVE;
13598                                                 ins->sreg1 = vtaddr->dreg;
13599                                         }
13600                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
13601                                                 ins->opcode = OP_LOAD_MEMBASE;
13602                                                 ins->inst_basereg = vtaddr->inst_basereg;
13603                                                 ins->inst_offset = vtaddr->inst_offset;
13604                                         } else
13605                                                 NOT_IMPLEMENTED;
13606                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
13607                                         /* gsharedvt arg passed by ref */
13608                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
13609
13610                                         ins->opcode = OP_LOAD_MEMBASE;
13611                                         ins->inst_basereg = var->inst_basereg;
13612                                         ins->inst_offset = var->inst_offset;
13613                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
13614                                         MonoInst *load, *load2, *load3;
13615                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
13616                                         int reg1, reg2, reg3;
13617                                         MonoInst *info_var = cfg->gsharedvt_info_var;
13618                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
13619
13620                                         /*
13621                                          * gsharedvt local.
13622                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
13623                                          */
13624
13625                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
13626
13627                                         g_assert (info_var);
13628                                         g_assert (locals_var);
13629
13630                                         /* Mark the instruction used to compute the locals var as used */
13631                                         cfg->gsharedvt_locals_var_ins = NULL;
13632
13633                                         /* Load the offset */
13634                                         if (info_var->opcode == OP_REGOFFSET) {
13635                                                 reg1 = alloc_ireg (cfg);
13636                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
13637                                         } else if (info_var->opcode == OP_REGVAR) {
13638                                                 load = NULL;
13639                                                 reg1 = info_var->dreg;
13640                                         } else {
13641                                                 g_assert_not_reached ();
13642                                         }
13643                                         reg2 = alloc_ireg (cfg);
13644                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
13645                                         /* Load the locals area address */
13646                                         reg3 = alloc_ireg (cfg);
13647                                         if (locals_var->opcode == OP_REGOFFSET) {
13648                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
13649                                         } else if (locals_var->opcode == OP_REGVAR) {
13650                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
13651                                         } else {
13652                                                 g_assert_not_reached ();
13653                                         }
13654                                         /* Compute the address */
13655                                         ins->opcode = OP_PADD;
13656                                         ins->sreg1 = reg3;
13657                                         ins->sreg2 = reg2;
13658
13659                                         mono_bblock_insert_before_ins (bb, ins, load3);
13660                                         mono_bblock_insert_before_ins (bb, load3, load2);
13661                                         if (load)
13662                                                 mono_bblock_insert_before_ins (bb, load2, load);
13663                                 } else {
13664                                         g_assert (var->opcode == OP_REGOFFSET);
13665
13666                                         ins->opcode = OP_ADD_IMM;
13667                                         ins->sreg1 = var->inst_basereg;
13668                                         ins->inst_imm = var->inst_offset;
13669                                 }
13670
13671                                 *need_local_opts = TRUE;
13672                                 spec = INS_INFO (ins->opcode);
13673                         }
13674
13675                         if (ins->opcode < MONO_CEE_LAST) {
13676                                 mono_print_ins (ins);
13677                                 g_assert_not_reached ();
13678                         }
13679
13680                         /*
13681                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
13682                          * src register.
13683                          * FIXME:
13684                          */
13685                         if (MONO_IS_STORE_MEMBASE (ins)) {
13686                                 tmp_reg = ins->dreg;
13687                                 ins->dreg = ins->sreg2;
13688                                 ins->sreg2 = tmp_reg;
13689                                 store = TRUE;
13690
13691                                 spec2 [MONO_INST_DEST] = ' ';
13692                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13693                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13694                                 spec2 [MONO_INST_SRC3] = ' ';
13695                                 spec = spec2;
13696                         } else if (MONO_IS_STORE_MEMINDEX (ins))
13697                                 g_assert_not_reached ();
13698                         else
13699                                 store = FALSE;
13700                         no_lvreg = FALSE;
13701
13702                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
13703                                 printf ("\t %.3s %d", spec, ins->dreg);
13704                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
13705                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
13706                                         printf (" %d", sregs [srcindex]);
13707                                 printf ("\n");
13708                         }
13709
13710                         /***************/
13711                         /*    DREG     */
13712                         /***************/
13713                         regtype = spec [MONO_INST_DEST];
13714                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
13715                         prev_dreg = -1;
13716
13717                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
13718                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
13719                                 MonoInst *store_ins;
13720                                 int store_opcode;
13721                                 MonoInst *def_ins = ins;
13722                                 int dreg = ins->dreg; /* The original vreg */
13723
13724                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
13725
13726                                 if (var->opcode == OP_REGVAR) {
13727                                         ins->dreg = var->dreg;
13728                                 } 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)) {
13729                                         /*
13730                                          * Instead of emitting a load+store, use a _membase opcode.
13731                                          */
13732                                         g_assert (var->opcode == OP_REGOFFSET);
13733                                         if (ins->opcode == OP_MOVE) {
13734                                                 NULLIFY_INS (ins);
13735                                                 def_ins = NULL;
13736                                         } else {
13737                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
13738                                                 ins->inst_basereg = var->inst_basereg;
13739                                                 ins->inst_offset = var->inst_offset;
13740                                                 ins->dreg = -1;
13741                                         }
13742                                         spec = INS_INFO (ins->opcode);
13743                                 } else {
13744                                         guint32 lvreg;
13745
13746                                         g_assert (var->opcode == OP_REGOFFSET);
13747
13748                                         prev_dreg = ins->dreg;
13749
13750                                         /* Invalidate any previous lvreg for this vreg */
13751                                         vreg_to_lvreg [ins->dreg] = 0;
13752
13753                                         lvreg = 0;
13754
13755                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
13756                                                 regtype = 'l';
13757                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
13758                                         }
13759
13760                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
13761
13762 #if SIZEOF_REGISTER != 8
13763                                         if (regtype == 'l') {
13764                                                 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));
13765                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13766                                                 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));
13767                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
13768                                                 def_ins = store_ins;
13769                                         }
13770                                         else
13771 #endif
13772                                         {
13773                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
13774
13775                                                 /* Try to fuse the store into the instruction itself */
13776                                                 /* FIXME: Add more instructions */
13777                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
13778                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
13779                                                         ins->inst_imm = ins->inst_c0;
13780                                                         ins->inst_destbasereg = var->inst_basereg;
13781                                                         ins->inst_offset = var->inst_offset;
13782                                                         spec = INS_INFO (ins->opcode);
13783                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
13784                                                         ins->opcode = store_opcode;
13785                                                         ins->inst_destbasereg = var->inst_basereg;
13786                                                         ins->inst_offset = var->inst_offset;
13787
13788                                                         no_lvreg = TRUE;
13789
13790                                                         tmp_reg = ins->dreg;
13791                                                         ins->dreg = ins->sreg2;
13792                                                         ins->sreg2 = tmp_reg;
13793                                                         store = TRUE;
13794
13795                                                         spec2 [MONO_INST_DEST] = ' ';
13796                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
13797                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
13798                                                         spec2 [MONO_INST_SRC3] = ' ';
13799                                                         spec = spec2;
13800                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
13801                                                         // FIXME: The backends expect the base reg to be in inst_basereg
13802                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
13803                                                         ins->dreg = -1;
13804                                                         ins->inst_basereg = var->inst_basereg;
13805                                                         ins->inst_offset = var->inst_offset;
13806                                                         spec = INS_INFO (ins->opcode);
13807                                                 } else {
13808                                                         /* printf ("INS: "); mono_print_ins (ins); */
13809                                                         /* Create a store instruction */
13810                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
13811
13812                                                         /* Insert it after the instruction */
13813                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
13814
13815                                                         def_ins = store_ins;
13816
13817                                                         /*
13818                                                          * We can't assign ins->dreg to var->dreg here, since the
13819                                                          * sregs could use it. So set a flag, and do it after
13820                                                          * the sregs.
13821                                                          */
13822                                                         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)))
13823                                                                 dest_has_lvreg = TRUE;
13824                                                 }
13825                                         }
13826                                 }
13827
13828                                 if (def_ins && !live_range_start [dreg]) {
13829                                         live_range_start [dreg] = def_ins;
13830                                         live_range_start_bb [dreg] = bb;
13831                                 }
13832
13833                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
13834                                         MonoInst *tmp;
13835
13836                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
13837                                         tmp->inst_c1 = dreg;
13838                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
13839                                 }
13840                         }
13841
13842                         /************/
13843                         /*  SREGS   */
13844                         /************/
13845                         num_sregs = mono_inst_get_src_registers (ins, sregs);
13846                         for (srcindex = 0; srcindex < 3; ++srcindex) {
13847                                 regtype = spec [MONO_INST_SRC1 + srcindex];
13848                                 sreg = sregs [srcindex];
13849
13850                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
13851                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
13852                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
13853                                         MonoInst *use_ins = ins;
13854                                         MonoInst *load_ins;
13855                                         guint32 load_opcode;
13856
13857                                         if (var->opcode == OP_REGVAR) {
13858                                                 sregs [srcindex] = var->dreg;
13859                                                 //mono_inst_set_src_registers (ins, sregs);
13860                                                 live_range_end [sreg] = use_ins;
13861                                                 live_range_end_bb [sreg] = bb;
13862
13863                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13864                                                         MonoInst *tmp;
13865
13866                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13867                                                         /* var->dreg is a hreg */
13868                                                         tmp->inst_c1 = sreg;
13869                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
13870                                                 }
13871
13872                                                 continue;
13873                                         }
13874
13875                                         g_assert (var->opcode == OP_REGOFFSET);
13876
13877                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
13878
13879                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
13880
13881                                         if (vreg_to_lvreg [sreg]) {
13882                                                 g_assert (vreg_to_lvreg [sreg] != -1);
13883
13884                                                 /* The variable is already loaded to an lvreg */
13885                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
13886                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
13887                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
13888                                                 //mono_inst_set_src_registers (ins, sregs);
13889                                                 continue;
13890                                         }
13891
13892                                         /* Try to fuse the load into the instruction */
13893                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
13894                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
13895                                                 sregs [0] = var->inst_basereg;
13896                                                 //mono_inst_set_src_registers (ins, sregs);
13897                                                 ins->inst_offset = var->inst_offset;
13898                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
13899                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
13900                                                 sregs [1] = var->inst_basereg;
13901                                                 //mono_inst_set_src_registers (ins, sregs);
13902                                                 ins->inst_offset = var->inst_offset;
13903                                         } else {
13904                                                 if (MONO_IS_REAL_MOVE (ins)) {
13905                                                         ins->opcode = OP_NOP;
13906                                                         sreg = ins->dreg;
13907                                                 } else {
13908                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
13909
13910                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
13911
13912                                                         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) {
13913                                                                 if (var->dreg == prev_dreg) {
13914                                                                         /*
13915                                                                          * sreg refers to the value loaded by the load
13916                                                                          * emitted below, but we need to use ins->dreg
13917                                                                          * since it refers to the store emitted earlier.
13918                                                                          */
13919                                                                         sreg = ins->dreg;
13920                                                                 }
13921                                                                 g_assert (sreg != -1);
13922                                                                 vreg_to_lvreg [var->dreg] = sreg;
13923                                                                 if (lvregs_len >= lvregs_size) {
13924                                                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13925                                                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13926                                                                         lvregs = new_lvregs;
13927                                                                         lvregs_size *= 2;
13928                                                                 }
13929                                                                 lvregs [lvregs_len ++] = var->dreg;
13930                                                         }
13931                                                 }
13932
13933                                                 sregs [srcindex] = sreg;
13934                                                 //mono_inst_set_src_registers (ins, sregs);
13935
13936 #if SIZEOF_REGISTER != 8
13937                                                 if (regtype == 'l') {
13938                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
13939                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13940                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
13941                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13942                                                         use_ins = load_ins;
13943                                                 }
13944                                                 else
13945 #endif
13946                                                 {
13947 #if SIZEOF_REGISTER == 4
13948                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
13949 #endif
13950                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
13951                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
13952                                                         use_ins = load_ins;
13953                                                 }
13954                                         }
13955
13956                                         if (var->dreg < orig_next_vreg) {
13957                                                 live_range_end [var->dreg] = use_ins;
13958                                                 live_range_end_bb [var->dreg] = bb;
13959                                         }
13960
13961                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
13962                                                 MonoInst *tmp;
13963
13964                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
13965                                                 tmp->inst_c1 = var->dreg;
13966                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
13967                                         }
13968                                 }
13969                         }
13970                         mono_inst_set_src_registers (ins, sregs);
13971
13972                         if (dest_has_lvreg) {
13973                                 g_assert (ins->dreg != -1);
13974                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
13975                                 if (lvregs_len >= lvregs_size) {
13976                                         guint32 *new_lvregs = mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * lvregs_size * 2);
13977                                         memcpy (new_lvregs, lvregs, sizeof (guint32) * lvregs_size);
13978                                         lvregs = new_lvregs;
13979                                         lvregs_size *= 2;
13980                                 }
13981                                 lvregs [lvregs_len ++] = prev_dreg;
13982                                 dest_has_lvreg = FALSE;
13983                         }
13984
13985                         if (store) {
13986                                 tmp_reg = ins->dreg;
13987                                 ins->dreg = ins->sreg2;
13988                                 ins->sreg2 = tmp_reg;
13989                         }
13990
13991                         if (MONO_IS_CALL (ins)) {
13992                                 /* Clear vreg_to_lvreg array */
13993                                 for (i = 0; i < lvregs_len; i++)
13994                                         vreg_to_lvreg [lvregs [i]] = 0;
13995                                 lvregs_len = 0;
13996                         } else if (ins->opcode == OP_NOP) {
13997                                 ins->dreg = -1;
13998                                 MONO_INST_NULLIFY_SREGS (ins);
13999                         }
14000
14001                         if (cfg->verbose_level > 2)
14002                                 mono_print_ins_index (1, ins);
14003                 }
14004
14005                 /* Extend the live range based on the liveness info */
14006                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14007                         for (i = 0; i < cfg->num_varinfo; i ++) {
14008                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14009
14010                                 if (vreg_is_volatile (cfg, vi->vreg))
14011                                         /* The liveness info is incomplete */
14012                                         continue;
14013
14014                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14015                                         /* Live from at least the first ins of this bb */
14016                                         live_range_start [vi->vreg] = bb->code;
14017                                         live_range_start_bb [vi->vreg] = bb;
14018                                 }
14019
14020                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14021                                         /* Live at least until the last ins of this bb */
14022                                         live_range_end [vi->vreg] = bb->last_ins;
14023                                         live_range_end_bb [vi->vreg] = bb;
14024                                 }
14025                         }
14026                 }
14027         }
14028
14029         /*
14030          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14031          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14032          */
14033         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14034                 for (i = 0; i < cfg->num_varinfo; ++i) {
14035                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14036                         MonoInst *ins;
14037
14038                         if (live_range_start [vreg]) {
14039                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14040                                 ins->inst_c0 = i;
14041                                 ins->inst_c1 = vreg;
14042                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14043                         }
14044                         if (live_range_end [vreg]) {
14045                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14046                                 ins->inst_c0 = i;
14047                                 ins->inst_c1 = vreg;
14048                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14049                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14050                                 else
14051                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14052                         }
14053                 }
14054         }
14055
14056         if (cfg->gsharedvt_locals_var_ins) {
14057                 /* Nullify if unused */
14058                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14059                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14060         }
14061
14062         g_free (live_range_start);
14063         g_free (live_range_end);
14064         g_free (live_range_start_bb);
14065         g_free (live_range_end_bb);
14066 }
14067
14068
14069 /**
14070  * FIXME:
14071  * - use 'iadd' instead of 'int_add'
14072  * - handling ovf opcodes: decompose in method_to_ir.
14073  * - unify iregs/fregs
14074  *   -> partly done, the missing parts are:
14075  *   - a more complete unification would involve unifying the hregs as well, so
14076  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
14077  *     would no longer map to the machine hregs, so the code generators would need to
14078  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
14079  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
14080  *     fp/non-fp branches speeds it up by about 15%.
14081  * - use sext/zext opcodes instead of shifts
14082  * - add OP_ICALL
14083  * - get rid of TEMPLOADs if possible and use vregs instead
14084  * - clean up usage of OP_P/OP_ opcodes
14085  * - cleanup usage of DUMMY_USE
14086  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
14087  *   stack
14088  * - set the stack type and allocate a dreg in the EMIT_NEW macros
14089  * - get rid of all the <foo>2 stuff when the new JIT is ready.
14090  * - make sure handle_stack_args () is called before the branch is emitted
14091  * - when the new IR is done, get rid of all unused stuff
14092  * - COMPARE/BEQ as separate instructions or unify them ?
14093  *   - keeping them separate allows specialized compare instructions like
14094  *     compare_imm, compare_membase
14095  *   - most back ends unify fp compare+branch, fp compare+ceq
14096  * - integrate mono_save_args into inline_method
14097  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
14098  * - handle long shift opts on 32 bit platforms somehow: they require
14099  *   3 sregs (2 for arg1 and 1 for arg2)
14100  * - make byref a 'normal' type.
14101  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
14102  *   variable if needed.
14103  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
14104  *   like inline_method.
14105  * - remove inlining restrictions
14106  * - fix LNEG and enable cfold of INEG
14107  * - generalize x86 optimizations like ldelema as a peephole optimization
14108  * - add store_mem_imm for amd64
14109  * - optimize the loading of the interruption flag in the managed->native wrappers
14110  * - avoid special handling of OP_NOP in passes
14111  * - move code inserting instructions into one function/macro.
14112  * - try a coalescing phase after liveness analysis
14113  * - add float -> vreg conversion + local optimizations on !x86
14114  * - figure out how to handle decomposed branches during optimizations, ie.
14115  *   compare+branch, op_jump_table+op_br etc.
14116  * - promote RuntimeXHandles to vregs
14117  * - vtype cleanups:
14118  *   - add a NEW_VARLOADA_VREG macro
14119  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
14120  *   accessing vtype fields.
14121  * - get rid of I8CONST on 64 bit platforms
14122  * - dealing with the increase in code size due to branches created during opcode
14123  *   decomposition:
14124  *   - use extended basic blocks
14125  *     - all parts of the JIT
14126  *     - handle_global_vregs () && local regalloc
14127  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
14128  * - sources of increase in code size:
14129  *   - vtypes
14130  *   - long compares
14131  *   - isinst and castclass
14132  *   - lvregs not allocated to global registers even if used multiple times
14133  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
14134  *   meaningful.
14135  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
14136  * - add all micro optimizations from the old JIT
14137  * - put tree optimizations into the deadce pass
14138  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
14139  *   specific function.
14140  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
14141  *   fcompare + branchCC.
14142  * - create a helper function for allocating a stack slot, taking into account
14143  *   MONO_CFG_HAS_SPILLUP.
14144  * - merge r68207.
14145  * - optimize mono_regstate2_alloc_int/float.
14146  * - fix the pessimistic handling of variables accessed in exception handler blocks.
14147  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
14148  *   parts of the tree could be separated by other instructions, killing the tree
14149  *   arguments, or stores killing loads etc. Also, should we fold loads into other
14150  *   instructions if the result of the load is used multiple times ?
14151  * - make the REM_IMM optimization in mini-x86.c arch-independent.
14152  * - LAST MERGE: 108395.
14153  * - when returning vtypes in registers, generate IR and append it to the end of the
14154  *   last bb instead of doing it in the epilog.
14155  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
14156  */
14157
14158 /*
14159
14160 NOTES
14161 -----
14162
14163 - When to decompose opcodes:
14164   - earlier: this makes some optimizations hard to implement, since the low level IR
14165   no longer contains the neccessary information. But it is easier to do.
14166   - later: harder to implement, enables more optimizations.
14167 - Branches inside bblocks:
14168   - created when decomposing complex opcodes.
14169     - branches to another bblock: harmless, but not tracked by the branch
14170       optimizations, so need to branch to a label at the start of the bblock.
14171     - branches to inside the same bblock: very problematic, trips up the local
14172       reg allocator. Can be fixed by spitting the current bblock, but that is a
14173       complex operation, since some local vregs can become global vregs etc.
14174 - Local/global vregs:
14175   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
14176     local register allocator.
14177   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
14178     structure, created by mono_create_var (). Assigned to hregs or the stack by
14179     the global register allocator.
14180 - When to do optimizations like alu->alu_imm:
14181   - earlier -> saves work later on since the IR will be smaller/simpler
14182   - later -> can work on more instructions
14183 - Handling of valuetypes:
14184   - When a vtype is pushed on the stack, a new temporary is created, an
14185     instruction computing its address (LDADDR) is emitted and pushed on
14186     the stack. Need to optimize cases when the vtype is used immediately as in
14187     argument passing, stloc etc.
14188 - Instead of the to_end stuff in the old JIT, simply call the function handling
14189   the values on the stack before emitting the last instruction of the bb.
14190 */
14191
14192 #endif /* !DISABLE_JIT */