mono/mini/method-to-ir.c

   1 /*
   2  * method-to-ir.c: Convert CIL to the JIT internal representation
   3  *
   4  * Author:
   5  *   Paolo Molaro (lupus@ximian.com)
   6  *   Dietmar Maurer (dietmar@ximian.com)
   7  *
   8  * (C) 2002 Ximian, Inc.
   9  * Copyright 2003-2010 Novell, Inc (http://www.novell.com)
  10  * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
  11  * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  12  */
  13
  14 #include <config.h>
  15
  16 #ifndef DISABLE_JIT
  17
  18 #include <signal.h>
  19
  20 #ifdef HAVE_UNISTD_H
  21 #include <unistd.h>
  22 #endif
  23
  24 #include <math.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27
  28 #ifdef HAVE_SYS_TIME_H
  29 #include <sys/time.h>
  30 #endif
  31
  32 #ifdef HAVE_ALLOCA_H
  33 #include <alloca.h>
  34 #endif
  35
  36 #include <mono/utils/memcheck.h>
  37 #include "mini.h"
  38 #include <mono/metadata/abi-details.h>
  39 #include <mono/metadata/assembly.h>
  40 #include <mono/metadata/attrdefs.h>
  41 #include <mono/metadata/loader.h>
  42 #include <mono/metadata/tabledefs.h>
  43 #include <mono/metadata/class.h>
  44 #include <mono/metadata/object.h>
  45 #include <mono/metadata/exception.h>
  46 #include <mono/metadata/opcodes.h>
  47 #include <mono/metadata/mono-endian.h>
  48 #include <mono/metadata/tokentype.h>
  49 #include <mono/metadata/tabledefs.h>
  50 #include <mono/metadata/marshal.h>
  51 #include <mono/metadata/debug-helpers.h>
  52 #include <mono/metadata/mono-debug.h>
  53 #include <mono/metadata/mono-debug-debugger.h>
  54 #include <mono/metadata/gc-internals.h>
  55 #include <mono/metadata/security-manager.h>
  56 #include <mono/metadata/threads-types.h>
  57 #include <mono/metadata/security-core-clr.h>
  58 #include <mono/metadata/profiler-private.h>
  59 #include <mono/metadata/profiler.h>
  60 #include <mono/metadata/monitor.h>
  61 #include <mono/metadata/debug-mono-symfile.h>
  62 #include <mono/utils/mono-compiler.h>
  63 #include <mono/utils/mono-memory-model.h>
  64 #include <mono/utils/mono-error-internals.h>
  65 #include <mono/metadata/mono-basic-block.h>
  66 #include <mono/metadata/reflection-internals.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 METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  94                 method_access_failure ((cfg), (method), (cmethod));                     \
  95                 goto exception_exit;                                                                            \
  96         } while (0)
  97 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  98                 field_access_failure ((cfg), (method), (field));                        \
  99                 goto exception_exit;    \
 100         } while (0)
 101 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 102                 if (cfg->gshared) {                                                                     \
 103                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 104                         goto exception_exit;    \
 105                 }                       \
 106         } while (0)
 107 #define GSHAREDVT_FAILURE(opcode) do {          \
 108         if (cfg->gsharedvt) {                                                                                           \
 109                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 110                 goto exception_exit;                                                                                    \
 111         }                                                                                                                                       \
 112         } while (0)
 113 #define OUT_OF_MEMORY_FAILURE do {      \
 114                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 115                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 116                 goto exception_exit;    \
 117         } while (0)
 118 #define DISABLE_AOT(cfg) do { \
 119                 if ((cfg)->verbose_level >= 2)                                            \
 120                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 121                 (cfg)->disable_aot = TRUE;                                                        \
 122         } while (0)
 123 #define LOAD_ERROR do { \
 124                 break_on_unverified ();                                                         \
 125                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 126                 goto exception_exit;                                                                    \
 127         } while (0)
 128
 129 #define TYPE_LOAD_ERROR(klass) do { \
 130                 cfg->exception_ptr = klass; \
 131                 LOAD_ERROR;                                     \
 132         } while (0)
 133
 134 #define CHECK_CFG_ERROR do {\
 135                 if (!mono_error_ok (&cfg->error)) { \
 136                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 137                         goto mono_error_exit; \
 138                 } \
 139         } while (0)
 140
 141 /* Determine whenever 'ins' represents a load of the 'this' argument */
 142 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 143
 144 static int ldind_to_load_membase (int opcode);
 145 static int stind_to_store_membase (int opcode);
 146
 147 int mono_op_to_op_imm (int opcode);
 148 int mono_op_to_op_imm_noemul (int opcode);
 149
 150 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 151
 152 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 153                                                   guchar *ip, guint real_offset, gboolean inline_always);
 154 static MonoInst*
 155 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 156
 157 /* helper methods signatures */
 158 static MonoMethodSignature *helper_sig_domain_get;
 159 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 160 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 161
 162
 163 /* type loading helpers */
 164 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 165 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 166
 167 /*
 168  * Instruction metadata
 169  */
 170 #ifdef MINI_OP
 171 #undef MINI_OP
 172 #endif
 173 #ifdef MINI_OP3
 174 #undef MINI_OP3
 175 #endif
 176 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 177 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 178 #define NONE ' '
 179 #define IREG 'i'
 180 #define FREG 'f'
 181 #define VREG 'v'
 182 #define XREG 'x'
 183 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 184 #define LREG IREG
 185 #else
 186 #define LREG 'l'
 187 #endif
 188 /* keep in sync with the enum in mini.h */
 189 const char
 190 ins_info[] = {
 191 #include "mini-ops.h"
 192 };
 193 #undef MINI_OP
 194 #undef MINI_OP3
 195
 196 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 197 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 198 /*
 199  * This should contain the index of the last sreg + 1. This is not the same
 200  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 201  */
 202 const gint8 ins_sreg_counts[] = {
 203 #include "mini-ops.h"
 204 };
 205 #undef MINI_OP
 206 #undef MINI_OP3
 207
 208 #define MONO_INIT_VARINFO(vi,id) do { \
 209         (vi)->range.first_use.pos.bid = 0xffff; \
 210         (vi)->reg = -1; \
 211         (vi)->idx = (id); \
 212 } while (0)
 213
 214 guint32
 215 mono_alloc_ireg (MonoCompile *cfg)
 216 {
 217         return alloc_ireg (cfg);
 218 }
 219
 220 guint32
 221 mono_alloc_lreg (MonoCompile *cfg)
 222 {
 223         return alloc_lreg (cfg);
 224 }
 225
 226 guint32
 227 mono_alloc_freg (MonoCompile *cfg)
 228 {
 229         return alloc_freg (cfg);
 230 }
 231
 232 guint32
 233 mono_alloc_preg (MonoCompile *cfg)
 234 {
 235         return alloc_preg (cfg);
 236 }
 237
 238 guint32
 239 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 240 {
 241         return alloc_dreg (cfg, stack_type);
 242 }
 243
 244 /*
 245  * mono_alloc_ireg_ref:
 246  *
 247  *   Allocate an IREG, and mark it as holding a GC ref.
 248  */
 249 guint32
 250 mono_alloc_ireg_ref (MonoCompile *cfg)
 251 {
 252         return alloc_ireg_ref (cfg);
 253 }
 254
 255 /*
 256  * mono_alloc_ireg_mp:
 257  *
 258  *   Allocate an IREG, and mark it as holding a managed pointer.
 259  */
 260 guint32
 261 mono_alloc_ireg_mp (MonoCompile *cfg)
 262 {
 263         return alloc_ireg_mp (cfg);
 264 }
 265
 266 /*
 267  * mono_alloc_ireg_copy:
 268  *
 269  *   Allocate an IREG with the same GC type as VREG.
 270  */
 271 guint32
 272 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 273 {
 274         if (vreg_is_ref (cfg, vreg))
 275                 return alloc_ireg_ref (cfg);
 276         else if (vreg_is_mp (cfg, vreg))
 277                 return alloc_ireg_mp (cfg);
 278         else
 279                 return alloc_ireg (cfg);
 280 }
 281
 282 guint
 283 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 284 {
 285         if (type->byref)
 286                 return OP_MOVE;
 287
 288         type = mini_get_underlying_type (type);
 289 handle_enum:
 290         switch (type->type) {
 291         case MONO_TYPE_I1:
 292         case MONO_TYPE_U1:
 293                 return OP_MOVE;
 294         case MONO_TYPE_I2:
 295         case MONO_TYPE_U2:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I4:
 298         case MONO_TYPE_U4:
 299                 return OP_MOVE;
 300         case MONO_TYPE_I:
 301         case MONO_TYPE_U:
 302         case MONO_TYPE_PTR:
 303         case MONO_TYPE_FNPTR:
 304                 return OP_MOVE;
 305         case MONO_TYPE_CLASS:
 306         case MONO_TYPE_STRING:
 307         case MONO_TYPE_OBJECT:
 308         case MONO_TYPE_SZARRAY:
 309         case MONO_TYPE_ARRAY:
 310                 return OP_MOVE;
 311         case MONO_TYPE_I8:
 312         case MONO_TYPE_U8:
 313 #if SIZEOF_REGISTER == 8
 314                 return OP_MOVE;
 315 #else
 316                 return OP_LMOVE;
 317 #endif
 318         case MONO_TYPE_R4:
 319                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 320         case MONO_TYPE_R8:
 321                 return OP_FMOVE;
 322         case MONO_TYPE_VALUETYPE:
 323                 if (type->data.klass->enumtype) {
 324                         type = mono_class_enum_basetype (type->data.klass);
 325                         goto handle_enum;
 326                 }
 327                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 328                         return OP_XMOVE;
 329                 return OP_VMOVE;
 330         case MONO_TYPE_TYPEDBYREF:
 331                 return OP_VMOVE;
 332         case MONO_TYPE_GENERICINST:
 333                 type = &type->data.generic_class->container_class->byval_arg;
 334                 goto handle_enum;
 335         case MONO_TYPE_VAR:
 336         case MONO_TYPE_MVAR:
 337                 g_assert (cfg->gshared);
 338                 if (mini_type_var_is_vt (type))
 339                         return OP_VMOVE;
 340                 else
 341                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 342         default:
 343                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 344         }
 345         return -1;
 346 }
 347
 348 void
 349 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 350 {
 351         int i;
 352         MonoInst *tree;
 353
 354         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 355         for (i = 0; i < bb->in_count; ++i)
 356                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 357         printf (", OUT: ");
 358         for (i = 0; i < bb->out_count; ++i)
 359                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 360         printf (" ]\n");
 361         for (tree = bb->code; tree; tree = tree->next)
 362                 mono_print_ins_index (-1, tree);
 363 }
 364
 365 void
 366 mono_create_helper_signatures (void)
 367 {
 368         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 369         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 370         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr 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 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 382 {
 383         char *method_fname = mono_method_full_name (method, TRUE);
 384         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 385         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 386         mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 387         g_free (method_fname);
 388         g_free (cil_method_fname);
 389 }
 390
 391 static MONO_NEVER_INLINE void
 392 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 393 {
 394         char *method_fname = mono_method_full_name (method, TRUE);
 395         char *field_fname = mono_field_full_name (field);
 396         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 397         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 398         g_free (method_fname);
 399         g_free (field_fname);
 400 }
 401
 402 static MONO_NEVER_INLINE void
 403 inline_failure (MonoCompile *cfg, const char *msg)
 404 {
 405         if (cfg->verbose_level >= 2)
 406                 printf ("inline failed: %s\n", msg);
 407         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 408 }
 409
 410 static MONO_NEVER_INLINE void
 411 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 412 {
 413         if (cfg->verbose_level > 2)                                                                                     \
 414                 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);
 415         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 416 }
 417
 418 static MONO_NEVER_INLINE void
 419 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 420 {
 421         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);
 422         if (cfg->verbose_level >= 2)
 423                 printf ("%s\n", cfg->exception_message);
 424         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 425 }
 426
 427 /*
 428  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 429  * foo<T> (int i) { ldarg.0; box T; }
 430  */
 431 #define UNVERIFIED do { \
 432         if (cfg->gsharedvt) { \
 433                 if (cfg->verbose_level > 2)                                                                     \
 434                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 435                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 436                 goto exception_exit;                                                                                    \
 437         }                                                                                                                                       \
 438         break_on_unverified ();                                                                                         \
 439         goto unverified;                                                                                                        \
 440 } while (0)
 441
 442 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 443                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 444                 if (!(tblock)) {        \
 445                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 446             NEW_BBLOCK (cfg, (tblock)); \
 447                         (tblock)->cil_code = (ip);      \
 448                         ADD_BBLOCK (cfg, (tblock));     \
 449                 } \
 450         } while (0)
 451
 452 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 453 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 454                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 455                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 456                 (dest)->sreg1 = (sr1); \
 457                 (dest)->sreg2 = (sr2); \
 458                 (dest)->inst_imm = (imm); \
 459                 (dest)->backend.shift_amount = (shift); \
 460                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 461         } while (0)
 462 #endif
 463
 464 /* Emit conversions so both operands of a binary opcode are of the same type */
 465 static void
 466 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 467 {
 468         MonoInst *arg1 = *arg1_ref;
 469         MonoInst *arg2 = *arg2_ref;
 470
 471         if (cfg->r4fp &&
 472                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 473                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 474                 MonoInst *conv;
 475
 476                 /* Mixing r4/r8 is allowed by the spec */
 477                 if (arg1->type == STACK_R4) {
 478                         int dreg = alloc_freg (cfg);
 479
 480                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 481                         conv->type = STACK_R8;
 482                         ins->sreg1 = dreg;
 483                         *arg1_ref = conv;
 484                 }
 485                 if (arg2->type == STACK_R4) {
 486                         int dreg = alloc_freg (cfg);
 487
 488                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 489                         conv->type = STACK_R8;
 490                         ins->sreg2 = dreg;
 491                         *arg2_ref = conv;
 492                 }
 493         }
 494
 495 #if SIZEOF_REGISTER == 8
 496         /* FIXME: Need to add many more cases */
 497         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 498                 MonoInst *widen;
 499
 500                 int dr = alloc_preg (cfg);
 501                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 502                 (ins)->sreg2 = widen->dreg;
 503         }
 504 #endif
 505 }
 506
 507 #define ADD_BINOP(op) do {      \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp -= 2;        \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 ins->sreg2 = sp [1]->dreg;      \
 512                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 513                 CHECK_TYPE (ins);       \
 514                 /* Have to insert a widening op */               \
 515         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 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_UNOP(op) do {       \
 522                 MONO_INST_NEW (cfg, ins, (op)); \
 523                 sp--;   \
 524                 ins->sreg1 = sp [0]->dreg;      \
 525                 type_from_op (cfg, ins, sp [0], NULL);  \
 526                 CHECK_TYPE (ins);       \
 527         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 528         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 529                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 530         } while (0)
 531
 532 #define ADD_BINCOND(next_block) do {    \
 533                 MonoInst *cmp;  \
 534                 sp -= 2; \
 535                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 536                 cmp->sreg1 = sp [0]->dreg;      \
 537                 cmp->sreg2 = sp [1]->dreg;      \
 538                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 539                 CHECK_TYPE (cmp);       \
 540                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 541                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 542                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 543                 GET_BBLOCK (cfg, tblock, target);               \
 544                 link_bblock (cfg, cfg->cbb, tblock);    \
 545                 ins->inst_true_bb = tblock;     \
 546                 if ((next_block)) {     \
 547                         link_bblock (cfg, cfg->cbb, (next_block));      \
 548                         ins->inst_false_bb = (next_block);      \
 549                         start_new_bblock = 1;   \
 550                 } else {        \
 551                         GET_BBLOCK (cfg, tblock, ip);           \
 552                         link_bblock (cfg, cfg->cbb, tblock);    \
 553                         ins->inst_false_bb = tblock;    \
 554                         start_new_bblock = 2;   \
 555                 }       \
 556                 if (sp != stack_start) {                                                                        \
 557                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 558                         CHECK_UNVERIFIABLE (cfg); \
 559                 } \
 560         MONO_ADD_INS (cfg->cbb, cmp); \
 561                 MONO_ADD_INS (cfg->cbb, ins);   \
 562         } while (0)
 563
 564 /* *
 565  * link_bblock: Links two basic blocks
 566  *
 567  * links two basic blocks in the control flow graph, the 'from'
 568  * argument is the starting block and the 'to' argument is the block
 569  * the control flow ends to after 'from'.
 570  */
 571 static void
 572 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 573 {
 574         MonoBasicBlock **newa;
 575         int i, found;
 576
 577 #if 0
 578         if (from->cil_code) {
 579                 if (to->cil_code)
 580                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 581                 else
 582                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 583         } else {
 584                 if (to->cil_code)
 585                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 586                 else
 587                         printf ("edge from entry to exit\n");
 588         }
 589 #endif
 590
 591         found = FALSE;
 592         for (i = 0; i < from->out_count; ++i) {
 593                 if (to == from->out_bb [i]) {
 594                         found = TRUE;
 595                         break;
 596                 }
 597         }
 598         if (!found) {
 599                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 600                 for (i = 0; i < from->out_count; ++i) {
 601                         newa [i] = from->out_bb [i];
 602                 }
 603                 newa [i] = to;
 604                 from->out_count++;
 605                 from->out_bb = newa;
 606         }
 607
 608         found = FALSE;
 609         for (i = 0; i < to->in_count; ++i) {
 610                 if (from == to->in_bb [i]) {
 611                         found = TRUE;
 612                         break;
 613                 }
 614         }
 615         if (!found) {
 616                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 617                 for (i = 0; i < to->in_count; ++i) {
 618                         newa [i] = to->in_bb [i];
 619                 }
 620                 newa [i] = from;
 621                 to->in_count++;
 622                 to->in_bb = newa;
 623         }
 624 }
 625
 626 void
 627 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 628 {
 629         link_bblock (cfg, from, to);
 630 }
 631
 632 /**
 633  * mono_find_block_region:
 634  *
 635  *   We mark each basic block with a region ID. We use that to avoid BB
 636  *   optimizations when blocks are in different regions.
 637  *
 638  * Returns:
 639  *   A region token that encodes where this region is, and information
 640  *   about the clause owner for this block.
 641  *
 642  *   The region encodes the try/catch/filter clause that owns this block
 643  *   as well as the type.  -1 is a special value that represents a block
 644  *   that is in none of try/catch/filter.
 645  */
 646 static int
 647 mono_find_block_region (MonoCompile *cfg, int offset)
 648 {
 649         MonoMethodHeader *header = cfg->header;
 650         MonoExceptionClause *clause;
 651         int i;
 652
 653         for (i = 0; i < header->num_clauses; ++i) {
 654                 clause = &header->clauses [i];
 655                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 656                     (offset < (clause->handler_offset)))
 657                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 658
 659                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 660                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 661                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 662                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 663                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 664                         else
 665                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 666                 }
 667         }
 668         for (i = 0; i < header->num_clauses; ++i) {
 669                 clause = &header->clauses [i];
 670
 671                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 672                         return ((i + 1) << 8) | clause->flags;
 673         }
 674
 675         return -1;
 676 }
 677
 678 static GList*
 679 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 680 {
 681         MonoMethodHeader *header = cfg->header;
 682         MonoExceptionClause *clause;
 683         int i;
 684         GList *res = NULL;
 685
 686         for (i = 0; i < header->num_clauses; ++i) {
 687                 clause = &header->clauses [i];
 688                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 689                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 690                         if (clause->flags == type)
 691                                 res = g_list_append (res, clause);
 692                 }
 693         }
 694         return res;
 695 }
 696
 697 static void
 698 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 699 {
 700         MonoInst *var;
 701
 702         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 703         if (var)
 704                 return;
 705
 706         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 707         /* prevent it from being register allocated */
 708         var->flags |= MONO_INST_VOLATILE;
 709
 710         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 711 }
 712
 713 MonoInst *
 714 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 715 {
 716         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 717 }
 718
 719 static MonoInst*
 720 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 721 {
 722         MonoInst *var;
 723
 724         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 725         if (var)
 726                 return var;
 727
 728         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 729         /* prevent it from being register allocated */
 730         var->flags |= MONO_INST_VOLATILE;
 731
 732         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 733
 734         return var;
 735 }
 736
 737 /*
 738  * Returns the type used in the eval stack when @type is loaded.
 739  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 740  */
 741 void
 742 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 743 {
 744         MonoClass *klass;
 745
 746         type = mini_get_underlying_type (type);
 747         inst->klass = klass = mono_class_from_mono_type (type);
 748         if (type->byref) {
 749                 inst->type = STACK_MP;
 750                 return;
 751         }
 752
 753 handle_enum:
 754         switch (type->type) {
 755         case MONO_TYPE_VOID:
 756                 inst->type = STACK_INV;
 757                 return;
 758         case MONO_TYPE_I1:
 759         case MONO_TYPE_U1:
 760         case MONO_TYPE_I2:
 761         case MONO_TYPE_U2:
 762         case MONO_TYPE_I4:
 763         case MONO_TYPE_U4:
 764                 inst->type = STACK_I4;
 765                 return;
 766         case MONO_TYPE_I:
 767         case MONO_TYPE_U:
 768         case MONO_TYPE_PTR:
 769         case MONO_TYPE_FNPTR:
 770                 inst->type = STACK_PTR;
 771                 return;
 772         case MONO_TYPE_CLASS:
 773         case MONO_TYPE_STRING:
 774         case MONO_TYPE_OBJECT:
 775         case MONO_TYPE_SZARRAY:
 776         case MONO_TYPE_ARRAY:
 777                 inst->type = STACK_OBJ;
 778                 return;
 779         case MONO_TYPE_I8:
 780         case MONO_TYPE_U8:
 781                 inst->type = STACK_I8;
 782                 return;
 783         case MONO_TYPE_R4:
 784                 inst->type = cfg->r4_stack_type;
 785                 break;
 786         case MONO_TYPE_R8:
 787                 inst->type = STACK_R8;
 788                 return;
 789         case MONO_TYPE_VALUETYPE:
 790                 if (type->data.klass->enumtype) {
 791                         type = mono_class_enum_basetype (type->data.klass);
 792                         goto handle_enum;
 793                 } else {
 794                         inst->klass = klass;
 795                         inst->type = STACK_VTYPE;
 796                         return;
 797                 }
 798         case MONO_TYPE_TYPEDBYREF:
 799                 inst->klass = mono_defaults.typed_reference_class;
 800                 inst->type = STACK_VTYPE;
 801                 return;
 802         case MONO_TYPE_GENERICINST:
 803                 type = &type->data.generic_class->container_class->byval_arg;
 804                 goto handle_enum;
 805         case MONO_TYPE_VAR:
 806         case MONO_TYPE_MVAR:
 807                 g_assert (cfg->gshared);
 808                 if (mini_is_gsharedvt_type (type)) {
 809                         g_assert (cfg->gsharedvt);
 810                         inst->type = STACK_VTYPE;
 811                 } else {
 812                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 813                 }
 814                 return;
 815         default:
 816                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 817         }
 818 }
 819
 820 /*
 821  * The following tables are used to quickly validate the IL code in type_from_op ().
 822  */
 823 static const char
 824 bin_num_table [STACK_MAX] [STACK_MAX] = {
 825         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 827         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 828         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 829         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 830         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 834 };
 835
 836 static const char
 837 neg_table [] = {
 838         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 839 };
 840
 841 /* reduce the size of this table */
 842 static const char
 843 bin_int_table [STACK_MAX] [STACK_MAX] = {
 844         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 845         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 846         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 847         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 848         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 849         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 850         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 851         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 852 };
 853
 854 static const char
 855 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 856 /*      Inv i  L  p  F  &  O  vt r4 */
 857         {0},
 858         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 859         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 860         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 861         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 862         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 863         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 864         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 865         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 866 };
 867
 868 /* reduce the size of this table */
 869 static const char
 870 shift_table [STACK_MAX] [STACK_MAX] = {
 871         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 872         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 873         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 874         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 875         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 876         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 877         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 878         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 879 };
 880
 881 /*
 882  * Tables to map from the non-specific opcode to the matching
 883  * type-specific opcode.
 884  */
 885 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 886 static const guint16
 887 binops_op_map [STACK_MAX] = {
 888         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
 889 };
 890
 891 /* handles from CEE_NEG to CEE_CONV_U8 */
 892 static const guint16
 893 unops_op_map [STACK_MAX] = {
 894         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
 895 };
 896
 897 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 898 static const guint16
 899 ovfops_op_map [STACK_MAX] = {
 900         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
 901 };
 902
 903 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 904 static const guint16
 905 ovf2ops_op_map [STACK_MAX] = {
 906         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
 907 };
 908
 909 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 910 static const guint16
 911 ovf3ops_op_map [STACK_MAX] = {
 912         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
 913 };
 914
 915 /* handles from CEE_BEQ to CEE_BLT_UN */
 916 static const guint16
 917 beqops_op_map [STACK_MAX] = {
 918         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
 919 };
 920
 921 /* handles from CEE_CEQ to CEE_CLT_UN */
 922 static const guint16
 923 ceqops_op_map [STACK_MAX] = {
 924         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
 925 };
 926
 927 /*
 928  * Sets ins->type (the type on the eval stack) according to the
 929  * type of the opcode and the arguments to it.
 930  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 931  *
 932  * FIXME: this function sets ins->type unconditionally in some cases, but
 933  * it should set it to invalid for some types (a conv.x on an object)
 934  */
 935 static void
 936 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 937 {
 938         switch (ins->opcode) {
 939         /* binops */
 940         case CEE_ADD:
 941         case CEE_SUB:
 942         case CEE_MUL:
 943         case CEE_DIV:
 944         case CEE_REM:
 945                 /* FIXME: check unverifiable args for STACK_MP */
 946                 ins->type = bin_num_table [src1->type] [src2->type];
 947                 ins->opcode += binops_op_map [ins->type];
 948                 break;
 949         case CEE_DIV_UN:
 950         case CEE_REM_UN:
 951         case CEE_AND:
 952         case CEE_OR:
 953         case CEE_XOR:
 954                 ins->type = bin_int_table [src1->type] [src2->type];
 955                 ins->opcode += binops_op_map [ins->type];
 956                 break;
 957         case CEE_SHL:
 958         case CEE_SHR:
 959         case CEE_SHR_UN:
 960                 ins->type = shift_table [src1->type] [src2->type];
 961                 ins->opcode += binops_op_map [ins->type];
 962                 break;
 963         case OP_COMPARE:
 964         case OP_LCOMPARE:
 965         case OP_ICOMPARE:
 966                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 967                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 968                         ins->opcode = OP_LCOMPARE;
 969                 else if (src1->type == STACK_R4)
 970                         ins->opcode = OP_RCOMPARE;
 971                 else if (src1->type == STACK_R8)
 972                         ins->opcode = OP_FCOMPARE;
 973                 else
 974                         ins->opcode = OP_ICOMPARE;
 975                 break;
 976         case OP_ICOMPARE_IMM:
 977                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 978                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 979                         ins->opcode = OP_LCOMPARE_IMM;
 980                 break;
 981         case CEE_BEQ:
 982         case CEE_BGE:
 983         case CEE_BGT:
 984         case CEE_BLE:
 985         case CEE_BLT:
 986         case CEE_BNE_UN:
 987         case CEE_BGE_UN:
 988         case CEE_BGT_UN:
 989         case CEE_BLE_UN:
 990         case CEE_BLT_UN:
 991                 ins->opcode += beqops_op_map [src1->type];
 992                 break;
 993         case OP_CEQ:
 994                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 995                 ins->opcode += ceqops_op_map [src1->type];
 996                 break;
 997         case OP_CGT:
 998         case OP_CGT_UN:
 999         case OP_CLT:
1000         case OP_CLT_UN:
1001                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1002                 ins->opcode += ceqops_op_map [src1->type];
1003                 break;
1004         /* unops */
1005         case CEE_NEG:
1006                 ins->type = neg_table [src1->type];
1007                 ins->opcode += unops_op_map [ins->type];
1008                 break;
1009         case CEE_NOT:
1010                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1011                         ins->type = src1->type;
1012                 else
1013                         ins->type = STACK_INV;
1014                 ins->opcode += unops_op_map [ins->type];
1015                 break;
1016         case CEE_CONV_I1:
1017         case CEE_CONV_I2:
1018         case CEE_CONV_I4:
1019         case CEE_CONV_U4:
1020                 ins->type = STACK_I4;
1021                 ins->opcode += unops_op_map [src1->type];
1022                 break;
1023         case CEE_CONV_R_UN:
1024                 ins->type = STACK_R8;
1025                 switch (src1->type) {
1026                 case STACK_I4:
1027                 case STACK_PTR:
1028                         ins->opcode = OP_ICONV_TO_R_UN;
1029                         break;
1030                 case STACK_I8:
1031                         ins->opcode = OP_LCONV_TO_R_UN;
1032                         break;
1033                 }
1034                 break;
1035         case CEE_CONV_OVF_I1:
1036         case CEE_CONV_OVF_U1:
1037         case CEE_CONV_OVF_I2:
1038         case CEE_CONV_OVF_U2:
1039         case CEE_CONV_OVF_I4:
1040         case CEE_CONV_OVF_U4:
1041                 ins->type = STACK_I4;
1042                 ins->opcode += ovf3ops_op_map [src1->type];
1043                 break;
1044         case CEE_CONV_OVF_I_UN:
1045         case CEE_CONV_OVF_U_UN:
1046                 ins->type = STACK_PTR;
1047                 ins->opcode += ovf2ops_op_map [src1->type];
1048                 break;
1049         case CEE_CONV_OVF_I1_UN:
1050         case CEE_CONV_OVF_I2_UN:
1051         case CEE_CONV_OVF_I4_UN:
1052         case CEE_CONV_OVF_U1_UN:
1053         case CEE_CONV_OVF_U2_UN:
1054         case CEE_CONV_OVF_U4_UN:
1055                 ins->type = STACK_I4;
1056                 ins->opcode += ovf2ops_op_map [src1->type];
1057                 break;
1058         case CEE_CONV_U:
1059                 ins->type = STACK_PTR;
1060                 switch (src1->type) {
1061                 case STACK_I4:
1062                         ins->opcode = OP_ICONV_TO_U;
1063                         break;
1064                 case STACK_PTR:
1065                 case STACK_MP:
1066 #if SIZEOF_VOID_P == 8
1067                         ins->opcode = OP_LCONV_TO_U;
1068 #else
1069                         ins->opcode = OP_MOVE;
1070 #endif
1071                         break;
1072                 case STACK_I8:
1073                         ins->opcode = OP_LCONV_TO_U;
1074                         break;
1075                 case STACK_R8:
1076                         ins->opcode = OP_FCONV_TO_U;
1077                         break;
1078                 }
1079                 break;
1080         case CEE_CONV_I8:
1081         case CEE_CONV_U8:
1082                 ins->type = STACK_I8;
1083                 ins->opcode += unops_op_map [src1->type];
1084                 break;
1085         case CEE_CONV_OVF_I8:
1086         case CEE_CONV_OVF_U8:
1087                 ins->type = STACK_I8;
1088                 ins->opcode += ovf3ops_op_map [src1->type];
1089                 break;
1090         case CEE_CONV_OVF_U8_UN:
1091         case CEE_CONV_OVF_I8_UN:
1092                 ins->type = STACK_I8;
1093                 ins->opcode += ovf2ops_op_map [src1->type];
1094                 break;
1095         case CEE_CONV_R4:
1096                 ins->type = cfg->r4_stack_type;
1097                 ins->opcode += unops_op_map [src1->type];
1098                 break;
1099         case CEE_CONV_R8:
1100                 ins->type = STACK_R8;
1101                 ins->opcode += unops_op_map [src1->type];
1102                 break;
1103         case OP_CKFINITE:
1104                 ins->type = STACK_R8;
1105                 break;
1106         case CEE_CONV_U2:
1107         case CEE_CONV_U1:
1108                 ins->type = STACK_I4;
1109                 ins->opcode += ovfops_op_map [src1->type];
1110                 break;
1111         case CEE_CONV_I:
1112         case CEE_CONV_OVF_I:
1113         case CEE_CONV_OVF_U:
1114                 ins->type = STACK_PTR;
1115                 ins->opcode += ovfops_op_map [src1->type];
1116                 break;
1117         case CEE_ADD_OVF:
1118         case CEE_ADD_OVF_UN:
1119         case CEE_MUL_OVF:
1120         case CEE_MUL_OVF_UN:
1121         case CEE_SUB_OVF:
1122         case CEE_SUB_OVF_UN:
1123                 ins->type = bin_num_table [src1->type] [src2->type];
1124                 ins->opcode += ovfops_op_map [src1->type];
1125                 if (ins->type == STACK_R8)
1126                         ins->type = STACK_INV;
1127                 break;
1128         case OP_LOAD_MEMBASE:
1129                 ins->type = STACK_PTR;
1130                 break;
1131         case OP_LOADI1_MEMBASE:
1132         case OP_LOADU1_MEMBASE:
1133         case OP_LOADI2_MEMBASE:
1134         case OP_LOADU2_MEMBASE:
1135         case OP_LOADI4_MEMBASE:
1136         case OP_LOADU4_MEMBASE:
1137                 ins->type = STACK_PTR;
1138                 break;
1139         case OP_LOADI8_MEMBASE:
1140                 ins->type = STACK_I8;
1141                 break;
1142         case OP_LOADR4_MEMBASE:
1143                 ins->type = cfg->r4_stack_type;
1144                 break;
1145         case OP_LOADR8_MEMBASE:
1146                 ins->type = STACK_R8;
1147                 break;
1148         default:
1149                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1150                 break;
1151         }
1152
1153         if (ins->type == STACK_MP)
1154                 ins->klass = mono_defaults.object_class;
1155 }
1156
1157 static const char
1158 ldind_type [] = {
1159         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1160 };
1161
1162 #if 0
1163
1164 static const char
1165 param_table [STACK_MAX] [STACK_MAX] = {
1166         {0},
1167 };
1168
1169 static int
1170 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1171 {
1172         int i;
1173
1174         if (sig->hasthis) {
1175                 switch (args->type) {
1176                 case STACK_I4:
1177                 case STACK_I8:
1178                 case STACK_R8:
1179                 case STACK_VTYPE:
1180                 case STACK_INV:
1181                         return 0;
1182                 }
1183                 args++;
1184         }
1185         for (i = 0; i < sig->param_count; ++i) {
1186                 switch (args [i].type) {
1187                 case STACK_INV:
1188                         return 0;
1189                 case STACK_MP:
1190                         if (!sig->params [i]->byref)
1191                                 return 0;
1192                         continue;
1193                 case STACK_OBJ:
1194                         if (sig->params [i]->byref)
1195                                 return 0;
1196                         switch (sig->params [i]->type) {
1197                         case MONO_TYPE_CLASS:
1198                         case MONO_TYPE_STRING:
1199                         case MONO_TYPE_OBJECT:
1200                         case MONO_TYPE_SZARRAY:
1201                         case MONO_TYPE_ARRAY:
1202                                 break;
1203                         default:
1204                                 return 0;
1205                         }
1206                         continue;
1207                 case STACK_R8:
1208                         if (sig->params [i]->byref)
1209                                 return 0;
1210                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1211                                 return 0;
1212                         continue;
1213                 case STACK_PTR:
1214                 case STACK_I4:
1215                 case STACK_I8:
1216                 case STACK_VTYPE:
1217                         break;
1218                 }
1219                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1220                         return 0;*/
1221         }
1222         return 1;
1223 }
1224 #endif
1225
1226 /*
1227  * When we need a pointer to the current domain many times in a method, we
1228  * call mono_domain_get() once and we store the result in a local variable.
1229  * This function returns the variable that represents the MonoDomain*.
1230  */
1231 inline static MonoInst *
1232 mono_get_domainvar (MonoCompile *cfg)
1233 {
1234         if (!cfg->domainvar)
1235                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1236         return cfg->domainvar;
1237 }
1238
1239 /*
1240  * The got_var contains the address of the Global Offset Table when AOT
1241  * compiling.
1242  */
1243 MonoInst *
1244 mono_get_got_var (MonoCompile *cfg)
1245 {
1246         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1247                 return NULL;
1248         if (!cfg->got_var) {
1249                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1250         }
1251         return cfg->got_var;
1252 }
1253
1254 static MonoInst *
1255 mono_get_vtable_var (MonoCompile *cfg)
1256 {
1257         g_assert (cfg->gshared);
1258
1259         if (!cfg->rgctx_var) {
1260                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1261                 /* force the var to be stack allocated */
1262                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1263         }
1264
1265         return cfg->rgctx_var;
1266 }
1267
1268 static MonoType*
1269 type_from_stack_type (MonoInst *ins) {
1270         switch (ins->type) {
1271         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1272         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1273         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1274         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1275         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1276         case STACK_MP:
1277                 return &ins->klass->this_arg;
1278         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1279         case STACK_VTYPE: return &ins->klass->byval_arg;
1280         default:
1281                 g_error ("stack type %d to monotype not handled\n", ins->type);
1282         }
1283         return NULL;
1284 }
1285
1286 static G_GNUC_UNUSED int
1287 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1288 {
1289         t = mono_type_get_underlying_type (t);
1290         switch (t->type) {
1291         case MONO_TYPE_I1:
1292         case MONO_TYPE_U1:
1293         case MONO_TYPE_I2:
1294         case MONO_TYPE_U2:
1295         case MONO_TYPE_I4:
1296         case MONO_TYPE_U4:
1297                 return STACK_I4;
1298         case MONO_TYPE_I:
1299         case MONO_TYPE_U:
1300         case MONO_TYPE_PTR:
1301         case MONO_TYPE_FNPTR:
1302                 return STACK_PTR;
1303         case MONO_TYPE_CLASS:
1304         case MONO_TYPE_STRING:
1305         case MONO_TYPE_OBJECT:
1306         case MONO_TYPE_SZARRAY:
1307         case MONO_TYPE_ARRAY:
1308                 return STACK_OBJ;
1309         case MONO_TYPE_I8:
1310         case MONO_TYPE_U8:
1311                 return STACK_I8;
1312         case MONO_TYPE_R4:
1313                 return cfg->r4_stack_type;
1314         case MONO_TYPE_R8:
1315                 return STACK_R8;
1316         case MONO_TYPE_VALUETYPE:
1317         case MONO_TYPE_TYPEDBYREF:
1318                 return STACK_VTYPE;
1319         case MONO_TYPE_GENERICINST:
1320                 if (mono_type_generic_inst_is_valuetype (t))
1321                         return STACK_VTYPE;
1322                 else
1323                         return STACK_OBJ;
1324                 break;
1325         default:
1326                 g_assert_not_reached ();
1327         }
1328
1329         return -1;
1330 }
1331
1332 static MonoClass*
1333 array_access_to_klass (int opcode)
1334 {
1335         switch (opcode) {
1336         case CEE_LDELEM_U1:
1337                 return mono_defaults.byte_class;
1338         case CEE_LDELEM_U2:
1339                 return mono_defaults.uint16_class;
1340         case CEE_LDELEM_I:
1341         case CEE_STELEM_I:
1342                 return mono_defaults.int_class;
1343         case CEE_LDELEM_I1:
1344         case CEE_STELEM_I1:
1345                 return mono_defaults.sbyte_class;
1346         case CEE_LDELEM_I2:
1347         case CEE_STELEM_I2:
1348                 return mono_defaults.int16_class;
1349         case CEE_LDELEM_I4:
1350         case CEE_STELEM_I4:
1351                 return mono_defaults.int32_class;
1352         case CEE_LDELEM_U4:
1353                 return mono_defaults.uint32_class;
1354         case CEE_LDELEM_I8:
1355         case CEE_STELEM_I8:
1356                 return mono_defaults.int64_class;
1357         case CEE_LDELEM_R4:
1358         case CEE_STELEM_R4:
1359                 return mono_defaults.single_class;
1360         case CEE_LDELEM_R8:
1361         case CEE_STELEM_R8:
1362                 return mono_defaults.double_class;
1363         case CEE_LDELEM_REF:
1364         case CEE_STELEM_REF:
1365                 return mono_defaults.object_class;
1366         default:
1367                 g_assert_not_reached ();
1368         }
1369         return NULL;
1370 }
1371
1372 /*
1373  * We try to share variables when possible
1374  */
1375 static MonoInst *
1376 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1377 {
1378         MonoInst *res;
1379         int pos, vnum;
1380
1381         /* inlining can result in deeper stacks */
1382         if (slot >= cfg->header->max_stack)
1383                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1384
1385         pos = ins->type - 1 + slot * STACK_MAX;
1386
1387         switch (ins->type) {
1388         case STACK_I4:
1389         case STACK_I8:
1390         case STACK_R8:
1391         case STACK_PTR:
1392         case STACK_MP:
1393         case STACK_OBJ:
1394                 if ((vnum = cfg->intvars [pos]))
1395                         return cfg->varinfo [vnum];
1396                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1397                 cfg->intvars [pos] = res->inst_c0;
1398                 break;
1399         default:
1400                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1401         }
1402         return res;
1403 }
1404
1405 static void
1406 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1407 {
1408         /*
1409          * Don't use this if a generic_context is set, since that means AOT can't
1410          * look up the method using just the image+token.
1411          * table == 0 means this is a reference made from a wrapper.
1412          */
1413         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1414                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1415                 jump_info_token->image = image;
1416                 jump_info_token->token = token;
1417                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1418         }
1419 }
1420
1421 /*
1422  * This function is called to handle items that are left on the evaluation stack
1423  * at basic block boundaries. What happens is that we save the values to local variables
1424  * and we reload them later when first entering the target basic block (with the
1425  * handle_loaded_temps () function).
1426  * A single joint point will use the same variables (stored in the array bb->out_stack or
1427  * bb->in_stack, if the basic block is before or after the joint point).
1428  *
1429  * This function needs to be called _before_ emitting the last instruction of
1430  * the bb (i.e. before emitting a branch).
1431  * If the stack merge fails at a join point, cfg->unverifiable is set.
1432  */
1433 static void
1434 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1435 {
1436         int i, bindex;
1437         MonoBasicBlock *bb = cfg->cbb;
1438         MonoBasicBlock *outb;
1439         MonoInst *inst, **locals;
1440         gboolean found;
1441
1442         if (!count)
1443                 return;
1444         if (cfg->verbose_level > 3)
1445                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1446         if (!bb->out_scount) {
1447                 bb->out_scount = count;
1448                 //printf ("bblock %d has out:", bb->block_num);
1449                 found = FALSE;
1450                 for (i = 0; i < bb->out_count; ++i) {
1451                         outb = bb->out_bb [i];
1452                         /* exception handlers are linked, but they should not be considered for stack args */
1453                         if (outb->flags & BB_EXCEPTION_HANDLER)
1454                                 continue;
1455                         //printf (" %d", outb->block_num);
1456                         if (outb->in_stack) {
1457                                 found = TRUE;
1458                                 bb->out_stack = outb->in_stack;
1459                                 break;
1460                         }
1461                 }
1462                 //printf ("\n");
1463                 if (!found) {
1464                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1465                         for (i = 0; i < count; ++i) {
1466                                 /*
1467                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1468                                  * stack slot and if they are of the same type.
1469                                  * This won't cause conflicts since if 'local' is used to
1470                                  * store one of the values in the in_stack of a bblock, then
1471                                  * the same variable will be used for the same outgoing stack
1472                                  * slot as well.
1473                                  * This doesn't work when inlining methods, since the bblocks
1474                                  * in the inlined methods do not inherit their in_stack from
1475                                  * the bblock they are inlined to. See bug #58863 for an
1476                                  * example.
1477                                  */
1478                                 if (cfg->inlined_method)
1479                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1480                                 else
1481                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1482                         }
1483                 }
1484         }
1485
1486         for (i = 0; i < bb->out_count; ++i) {
1487                 outb = bb->out_bb [i];
1488                 /* exception handlers are linked, but they should not be considered for stack args */
1489                 if (outb->flags & BB_EXCEPTION_HANDLER)
1490                         continue;
1491                 if (outb->in_scount) {
1492                         if (outb->in_scount != bb->out_scount) {
1493                                 cfg->unverifiable = TRUE;
1494                                 return;
1495                         }
1496                         continue; /* check they are the same locals */
1497                 }
1498                 outb->in_scount = count;
1499                 outb->in_stack = bb->out_stack;
1500         }
1501
1502         locals = bb->out_stack;
1503         cfg->cbb = bb;
1504         for (i = 0; i < count; ++i) {
1505                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1506                 inst->cil_code = sp [i]->cil_code;
1507                 sp [i] = locals [i];
1508                 if (cfg->verbose_level > 3)
1509                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1510         }
1511
1512         /*
1513          * It is possible that the out bblocks already have in_stack assigned, and
1514          * the in_stacks differ. In this case, we will store to all the different
1515          * in_stacks.
1516          */
1517
1518         found = TRUE;
1519         bindex = 0;
1520         while (found) {
1521                 /* Find a bblock which has a different in_stack */
1522                 found = FALSE;
1523                 while (bindex < bb->out_count) {
1524                         outb = bb->out_bb [bindex];
1525                         /* exception handlers are linked, but they should not be considered for stack args */
1526                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1527                                 bindex++;
1528                                 continue;
1529                         }
1530                         if (outb->in_stack != locals) {
1531                                 for (i = 0; i < count; ++i) {
1532                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [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)outb->in_stack [i]->inst_c0);
1537                                 }
1538                                 locals = outb->in_stack;
1539                                 found = TRUE;
1540                                 break;
1541                         }
1542                         bindex ++;
1543                 }
1544         }
1545 }
1546
1547 static MonoInst*
1548 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1549 {
1550         MonoInst *ins;
1551
1552         if (cfg->compile_aot) {
1553                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1554         } else {
1555                 MonoJumpInfo ji;
1556                 gpointer target;
1557                 MonoError error;
1558
1559                 ji.type = patch_type;
1560                 ji.data.target = data;
1561                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1562                 mono_error_assert_ok (&error);
1563
1564                 EMIT_NEW_PCONST (cfg, ins, target);
1565         }
1566         return ins;
1567 }
1568
1569 static void
1570 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1571 {
1572         int ibitmap_reg = alloc_preg (cfg);
1573 #ifdef COMPRESSED_INTERFACE_BITMAP
1574         MonoInst *args [2];
1575         MonoInst *res, *ins;
1576         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1577         MONO_ADD_INS (cfg->cbb, ins);
1578         args [0] = ins;
1579         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1580         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1581         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1582 #else
1583         int ibitmap_byte_reg = alloc_preg (cfg);
1584
1585         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1586
1587         if (cfg->compile_aot) {
1588                 int iid_reg = alloc_preg (cfg);
1589                 int shifted_iid_reg = alloc_preg (cfg);
1590                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1591                 int masked_iid_reg = alloc_preg (cfg);
1592                 int iid_one_bit_reg = alloc_preg (cfg);
1593                 int iid_bit_reg = alloc_preg (cfg);
1594                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1595                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1596                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1597                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1598                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1599                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1600                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1601                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1602         } else {
1603                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1604                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1605         }
1606 #endif
1607 }
1608
1609 /*
1610  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1611  * stored in "klass_reg" implements the interface "klass".
1612  */
1613 static void
1614 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1615 {
1616         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1617 }
1618
1619 /*
1620  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1621  * stored in "vtable_reg" implements the interface "klass".
1622  */
1623 static void
1624 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1625 {
1626         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1627 }
1628
1629 /*
1630  * Emit code which checks whenever the interface id of @klass is smaller than
1631  * than the value given by max_iid_reg.
1632 */
1633 static void
1634 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1635                                                  MonoBasicBlock *false_target)
1636 {
1637         if (cfg->compile_aot) {
1638                 int iid_reg = alloc_preg (cfg);
1639                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1640                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1641         }
1642         else
1643                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1644         if (false_target)
1645                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1646         else
1647                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1648 }
1649
1650 /* Same as above, but obtains max_iid from a vtable */
1651 static void
1652 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1653                                                                  MonoBasicBlock *false_target)
1654 {
1655         int max_iid_reg = alloc_preg (cfg);
1656
1657         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1658         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1659 }
1660
1661 /* Same as above, but obtains max_iid from a klass */
1662 static void
1663 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1664                                                                  MonoBasicBlock *false_target)
1665 {
1666         int max_iid_reg = alloc_preg (cfg);
1667
1668         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1669         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1670 }
1671
1672 static void
1673 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1674 {
1675         int idepth_reg = alloc_preg (cfg);
1676         int stypes_reg = alloc_preg (cfg);
1677         int stype = alloc_preg (cfg);
1678
1679         mono_class_setup_supertypes (klass);
1680
1681         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1682                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1683                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1684                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1685         }
1686         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1687         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1688         if (klass_ins) {
1689                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1690         } else if (cfg->compile_aot) {
1691                 int const_reg = alloc_preg (cfg);
1692                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1693                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1694         } else {
1695                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1696         }
1697         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1698 }
1699
1700 static void
1701 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1702 {
1703         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1704 }
1705
1706 static void
1707 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1708 {
1709         int intf_reg = alloc_preg (cfg);
1710
1711         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1712         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1713         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1714         if (true_target)
1715                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1716         else
1717                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1718 }
1719
1720 /*
1721  * Variant of the above that takes a register to the class, not the vtable.
1722  */
1723 static void
1724 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1725 {
1726         int intf_bit_reg = alloc_preg (cfg);
1727
1728         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1729         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1730         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1731         if (true_target)
1732                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1733         else
1734                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1735 }
1736
1737 static inline void
1738 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1739 {
1740         if (klass_inst) {
1741                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1742         } else {
1743                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1744                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1745         }
1746         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1747 }
1748
1749 static inline void
1750 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1751 {
1752         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1753 }
1754
1755 static inline void
1756 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1757 {
1758         if (cfg->compile_aot) {
1759                 int const_reg = alloc_preg (cfg);
1760                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1761                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1762         } else {
1763                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1764         }
1765         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1766 }
1767
1768 static void
1769 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1770
1771 static void
1772 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1773 {
1774         if (klass->rank) {
1775                 int rank_reg = alloc_preg (cfg);
1776                 int eclass_reg = alloc_preg (cfg);
1777
1778                 g_assert (!klass_inst);
1779                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1780                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1781                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1782                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1783                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1784                 if (klass->cast_class == mono_defaults.object_class) {
1785                         int parent_reg = alloc_preg (cfg);
1786                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1787                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1788                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1789                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1790                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1791                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1792                 } else if (klass->cast_class == mono_defaults.enum_class) {
1793                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1794                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1795                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1796                 } else {
1797                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1798                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1799                 }
1800
1801                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1802                         /* Check that the object is a vector too */
1803                         int bounds_reg = alloc_preg (cfg);
1804                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1805                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1806                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1807                 }
1808         } else {
1809                 int idepth_reg = alloc_preg (cfg);
1810                 int stypes_reg = alloc_preg (cfg);
1811                 int stype = alloc_preg (cfg);
1812
1813                 mono_class_setup_supertypes (klass);
1814
1815                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1816                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1817                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1818                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1819                 }
1820                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1822                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1823         }
1824 }
1825
1826 static void
1827 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1828 {
1829         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1830 }
1831
1832 static void
1833 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1834 {
1835         int val_reg;
1836
1837         g_assert (val == 0);
1838
1839         if (align == 0)
1840                 align = 4;
1841
1842         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1843                 switch (size) {
1844                 case 1:
1845                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1846                         return;
1847                 case 2:
1848                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1849                         return;
1850                 case 4:
1851                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1852                         return;
1853 #if SIZEOF_REGISTER == 8
1854                 case 8:
1855                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1856                         return;
1857 #endif
1858                 }
1859         }
1860
1861         val_reg = alloc_preg (cfg);
1862
1863         if (SIZEOF_REGISTER == 8)
1864                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1865         else
1866                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1867
1868         if (align < 4) {
1869                 /* This could be optimized further if neccesary */
1870                 while (size >= 1) {
1871                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1872                         offset += 1;
1873                         size -= 1;
1874                 }
1875                 return;
1876         }
1877
1878         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1879                 if (offset % 8) {
1880                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1881                         offset += 4;
1882                         size -= 4;
1883                 }
1884                 while (size >= 8) {
1885                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1886                         offset += 8;
1887                         size -= 8;
1888                 }
1889         }
1890
1891         while (size >= 4) {
1892                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1893                 offset += 4;
1894                 size -= 4;
1895         }
1896         while (size >= 2) {
1897                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1898                 offset += 2;
1899                 size -= 2;
1900         }
1901         while (size >= 1) {
1902                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1903                 offset += 1;
1904                 size -= 1;
1905         }
1906 }
1907
1908 void
1909 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1910 {
1911         int cur_reg;
1912
1913         if (align == 0)
1914                 align = 4;
1915
1916         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1917         g_assert (size < 10000);
1918
1919         if (align < 4) {
1920                 /* This could be optimized further if neccesary */
1921                 while (size >= 1) {
1922                         cur_reg = alloc_preg (cfg);
1923                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1924                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1925                         doffset += 1;
1926                         soffset += 1;
1927                         size -= 1;
1928                 }
1929         }
1930
1931         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1932                 while (size >= 8) {
1933                         cur_reg = alloc_preg (cfg);
1934                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1935                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1936                         doffset += 8;
1937                         soffset += 8;
1938                         size -= 8;
1939                 }
1940         }
1941
1942         while (size >= 4) {
1943                 cur_reg = alloc_preg (cfg);
1944                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1945                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1946                 doffset += 4;
1947                 soffset += 4;
1948                 size -= 4;
1949         }
1950         while (size >= 2) {
1951                 cur_reg = alloc_preg (cfg);
1952                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1953                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1954                 doffset += 2;
1955                 soffset += 2;
1956                 size -= 2;
1957         }
1958         while (size >= 1) {
1959                 cur_reg = alloc_preg (cfg);
1960                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1961                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1962                 doffset += 1;
1963                 soffset += 1;
1964                 size -= 1;
1965         }
1966 }
1967
1968 static void
1969 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1970 {
1971         MonoInst *ins, *c;
1972
1973         if (cfg->compile_aot) {
1974                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1975                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1976                 ins->sreg1 = sreg1;
1977                 ins->sreg2 = c->dreg;
1978                 MONO_ADD_INS (cfg->cbb, ins);
1979         } else {
1980                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1981                 ins->sreg1 = sreg1;
1982                 ins->inst_offset = mini_get_tls_offset (tls_key);
1983                 MONO_ADD_INS (cfg->cbb, ins);
1984         }
1985 }
1986
1987 /*
1988  * emit_push_lmf:
1989  *
1990  *   Emit IR to push the current LMF onto the LMF stack.
1991  */
1992 static void
1993 emit_push_lmf (MonoCompile *cfg)
1994 {
1995         /*
1996          * Emit IR to push the LMF:
1997          * lmf_addr = <lmf_addr from tls>
1998          * lmf->lmf_addr = lmf_addr
1999          * lmf->prev_lmf = *lmf_addr
2000          * *lmf_addr = lmf
2001          */
2002         int lmf_reg, prev_lmf_reg;
2003         MonoInst *ins, *lmf_ins;
2004
2005         if (!cfg->lmf_ir)
2006                 return;
2007
2008         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2009                 /* Load current lmf */
2010                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2011                 g_assert (lmf_ins);
2012                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2013                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2014                 lmf_reg = ins->dreg;
2015                 /* Save previous_lmf */
2016                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2017                 /* Set new LMF */
2018                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2019         } else {
2020                 /*
2021                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2022                  */
2023                 if (!cfg->lmf_addr_var)
2024                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2025
2026 #ifdef HOST_WIN32
2027                 ins = mono_get_jit_tls_intrinsic (cfg);
2028                 if (ins) {
2029                         int jit_tls_dreg = ins->dreg;
2030
2031                         MONO_ADD_INS (cfg->cbb, ins);
2032                         lmf_reg = alloc_preg (cfg);
2033                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2034                 } else {
2035                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2036                 }
2037 #else
2038                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2039                 if (lmf_ins) {
2040                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2041                 } else {
2042 #ifdef TARGET_IOS
2043                         MonoInst *args [16], *jit_tls_ins, *ins;
2044
2045                         /* Inline mono_get_lmf_addr () */
2046                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2047
2048                         /* Load mono_jit_tls_id */
2049                         if (cfg->compile_aot)
2050                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2051                         else
2052                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2053                         /* call pthread_getspecific () */
2054                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2055                         /* lmf_addr = &jit_tls->lmf */
2056                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2057                         lmf_ins = ins;
2058 #else
2059                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2060 #endif
2061                 }
2062 #endif
2063                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2064
2065                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2066                 lmf_reg = ins->dreg;
2067
2068                 prev_lmf_reg = alloc_preg (cfg);
2069                 /* Save previous_lmf */
2070                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2071                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2072                 /* Set new lmf */
2073                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2074         }
2075 }
2076
2077 /*
2078  * emit_pop_lmf:
2079  *
2080  *   Emit IR to pop the current LMF from the LMF stack.
2081  */
2082 static void
2083 emit_pop_lmf (MonoCompile *cfg)
2084 {
2085         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2086         MonoInst *ins;
2087
2088         if (!cfg->lmf_ir)
2089                 return;
2090
2091         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2092         lmf_reg = ins->dreg;
2093
2094         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2095                 /* Load previous_lmf */
2096                 prev_lmf_reg = alloc_preg (cfg);
2097                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2098                 /* Set new LMF */
2099                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2100         } else {
2101                 /*
2102                  * Emit IR to pop the LMF:
2103                  * *(lmf->lmf_addr) = lmf->prev_lmf
2104                  */
2105                 /* This could be called before emit_push_lmf () */
2106                 if (!cfg->lmf_addr_var)
2107                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2108                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2109
2110                 prev_lmf_reg = alloc_preg (cfg);
2111                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2112                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2113         }
2114 }
2115
2116 static void
2117 emit_instrumentation_call (MonoCompile *cfg, void *func)
2118 {
2119         MonoInst *iargs [1];
2120
2121         /*
2122          * Avoid instrumenting inlined methods since it can
2123          * distort profiling results.
2124          */
2125         if (cfg->method != cfg->current_method)
2126                 return;
2127
2128         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2129                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2130                 mono_emit_jit_icall (cfg, func, iargs);
2131         }
2132 }
2133
2134 static int
2135 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2136 {
2137 handle_enum:
2138         type = mini_get_underlying_type (type);
2139         switch (type->type) {
2140         case MONO_TYPE_VOID:
2141                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2142         case MONO_TYPE_I1:
2143         case MONO_TYPE_U1:
2144         case MONO_TYPE_I2:
2145         case MONO_TYPE_U2:
2146         case MONO_TYPE_I4:
2147         case MONO_TYPE_U4:
2148                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2149         case MONO_TYPE_I:
2150         case MONO_TYPE_U:
2151         case MONO_TYPE_PTR:
2152         case MONO_TYPE_FNPTR:
2153                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2154         case MONO_TYPE_CLASS:
2155         case MONO_TYPE_STRING:
2156         case MONO_TYPE_OBJECT:
2157         case MONO_TYPE_SZARRAY:
2158         case MONO_TYPE_ARRAY:
2159                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2160         case MONO_TYPE_I8:
2161         case MONO_TYPE_U8:
2162                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2163         case MONO_TYPE_R4:
2164                 if (cfg->r4fp)
2165                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2166                 else
2167                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2168         case MONO_TYPE_R8:
2169                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2170         case MONO_TYPE_VALUETYPE:
2171                 if (type->data.klass->enumtype) {
2172                         type = mono_class_enum_basetype (type->data.klass);
2173                         goto handle_enum;
2174                 } else
2175                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2176         case MONO_TYPE_TYPEDBYREF:
2177                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2178         case MONO_TYPE_GENERICINST:
2179                 type = &type->data.generic_class->container_class->byval_arg;
2180                 goto handle_enum;
2181         case MONO_TYPE_VAR:
2182         case MONO_TYPE_MVAR:
2183                 /* gsharedvt */
2184                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2185         default:
2186                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2187         }
2188         return -1;
2189 }
2190
2191 //XXX this ignores if t is byref
2192 #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)))))
2193
2194 /*
2195  * target_type_is_incompatible:
2196  * @cfg: MonoCompile context
2197  *
2198  * Check that the item @arg on the evaluation stack can be stored
2199  * in the target type (can be a local, or field, etc).
2200  * The cfg arg can be used to check if we need verification or just
2201  * validity checks.
2202  *
2203  * Returns: non-0 value if arg can't be stored on a target.
2204  */
2205 static int
2206 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2207 {
2208         MonoType *simple_type;
2209         MonoClass *klass;
2210
2211         if (target->byref) {
2212                 /* FIXME: check that the pointed to types match */
2213                 if (arg->type == STACK_MP) {
2214                         if (cfg->verbose_level) printf ("ok\n");
2215                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2216                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2217                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2218
2219                         /* if the target is native int& or same type */
2220                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2221                                 return 0;
2222
2223                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2224                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2225                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2226                                 return 0;
2227                         return 1;
2228                 }
2229                 if (arg->type == STACK_PTR)
2230                         return 0;
2231                 return 1;
2232         }
2233
2234         simple_type = mini_get_underlying_type (target);
2235         switch (simple_type->type) {
2236         case MONO_TYPE_VOID:
2237                 return 1;
2238         case MONO_TYPE_I1:
2239         case MONO_TYPE_U1:
2240         case MONO_TYPE_I2:
2241         case MONO_TYPE_U2:
2242         case MONO_TYPE_I4:
2243         case MONO_TYPE_U4:
2244                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2245                         return 1;
2246                 return 0;
2247         case MONO_TYPE_PTR:
2248                 /* STACK_MP is needed when setting pinned locals */
2249                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2250                         return 1;
2251                 return 0;
2252         case MONO_TYPE_I:
2253         case MONO_TYPE_U:
2254         case MONO_TYPE_FNPTR:
2255                 /*
2256                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2257                  * in native int. (#688008).
2258                  */
2259                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_CLASS:
2263         case MONO_TYPE_STRING:
2264         case MONO_TYPE_OBJECT:
2265         case MONO_TYPE_SZARRAY:
2266         case MONO_TYPE_ARRAY:
2267                 if (arg->type != STACK_OBJ)
2268                         return 1;
2269                 /* FIXME: check type compatibility */
2270                 return 0;
2271         case MONO_TYPE_I8:
2272         case MONO_TYPE_U8:
2273                 if (arg->type != STACK_I8)
2274                         return 1;
2275                 return 0;
2276         case MONO_TYPE_R4:
2277                 if (arg->type != cfg->r4_stack_type)
2278                         return 1;
2279                 return 0;
2280         case MONO_TYPE_R8:
2281                 if (arg->type != STACK_R8)
2282                         return 1;
2283                 return 0;
2284         case MONO_TYPE_VALUETYPE:
2285                 if (arg->type != STACK_VTYPE)
2286                         return 1;
2287                 klass = mono_class_from_mono_type (simple_type);
2288                 if (klass != arg->klass)
2289                         return 1;
2290                 return 0;
2291         case MONO_TYPE_TYPEDBYREF:
2292                 if (arg->type != STACK_VTYPE)
2293                         return 1;
2294                 klass = mono_class_from_mono_type (simple_type);
2295                 if (klass != arg->klass)
2296                         return 1;
2297                 return 0;
2298         case MONO_TYPE_GENERICINST:
2299                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2300                         MonoClass *target_class;
2301                         if (arg->type != STACK_VTYPE)
2302                                 return 1;
2303                         klass = mono_class_from_mono_type (simple_type);
2304                         target_class = mono_class_from_mono_type (target);
2305                         /* The second cases is needed when doing partial sharing */
2306                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2307                                 return 1;
2308                         return 0;
2309                 } else {
2310                         if (arg->type != STACK_OBJ)
2311                                 return 1;
2312                         /* FIXME: check type compatibility */
2313                         return 0;
2314                 }
2315         case MONO_TYPE_VAR:
2316         case MONO_TYPE_MVAR:
2317                 g_assert (cfg->gshared);
2318                 if (mini_type_var_is_vt (simple_type)) {
2319                         if (arg->type != STACK_VTYPE)
2320                                 return 1;
2321                 } else {
2322                         if (arg->type != STACK_OBJ)
2323                                 return 1;
2324                 }
2325                 return 0;
2326         default:
2327                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2328         }
2329         return 1;
2330 }
2331
2332 /*
2333  * Prepare arguments for passing to a function call.
2334  * Return a non-zero value if the arguments can't be passed to the given
2335  * signature.
2336  * The type checks are not yet complete and some conversions may need
2337  * casts on 32 or 64 bit architectures.
2338  *
2339  * FIXME: implement this using target_type_is_incompatible ()
2340  */
2341 static int
2342 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2343 {
2344         MonoType *simple_type;
2345         int i;
2346
2347         if (sig->hasthis) {
2348                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2349                         return 1;
2350                 args++;
2351         }
2352         for (i = 0; i < sig->param_count; ++i) {
2353                 if (sig->params [i]->byref) {
2354                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2355                                 return 1;
2356                         continue;
2357                 }
2358                 simple_type = mini_get_underlying_type (sig->params [i]);
2359 handle_enum:
2360                 switch (simple_type->type) {
2361                 case MONO_TYPE_VOID:
2362                         return 1;
2363                         continue;
2364                 case MONO_TYPE_I1:
2365                 case MONO_TYPE_U1:
2366                 case MONO_TYPE_I2:
2367                 case MONO_TYPE_U2:
2368                 case MONO_TYPE_I4:
2369                 case MONO_TYPE_U4:
2370                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2371                                 return 1;
2372                         continue;
2373                 case MONO_TYPE_I:
2374                 case MONO_TYPE_U:
2375                 case MONO_TYPE_PTR:
2376                 case MONO_TYPE_FNPTR:
2377                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2378                                 return 1;
2379                         continue;
2380                 case MONO_TYPE_CLASS:
2381                 case MONO_TYPE_STRING:
2382                 case MONO_TYPE_OBJECT:
2383                 case MONO_TYPE_SZARRAY:
2384                 case MONO_TYPE_ARRAY:
2385                         if (args [i]->type != STACK_OBJ)
2386                                 return 1;
2387                         continue;
2388                 case MONO_TYPE_I8:
2389                 case MONO_TYPE_U8:
2390                         if (args [i]->type != STACK_I8)
2391                                 return 1;
2392                         continue;
2393                 case MONO_TYPE_R4:
2394                         if (args [i]->type != cfg->r4_stack_type)
2395                                 return 1;
2396                         continue;
2397                 case MONO_TYPE_R8:
2398                         if (args [i]->type != STACK_R8)
2399                                 return 1;
2400                         continue;
2401                 case MONO_TYPE_VALUETYPE:
2402                         if (simple_type->data.klass->enumtype) {
2403                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2404                                 goto handle_enum;
2405                         }
2406                         if (args [i]->type != STACK_VTYPE)
2407                                 return 1;
2408                         continue;
2409                 case MONO_TYPE_TYPEDBYREF:
2410                         if (args [i]->type != STACK_VTYPE)
2411                                 return 1;
2412                         continue;
2413                 case MONO_TYPE_GENERICINST:
2414                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2415                         goto handle_enum;
2416                 case MONO_TYPE_VAR:
2417                 case MONO_TYPE_MVAR:
2418                         /* gsharedvt */
2419                         if (args [i]->type != STACK_VTYPE)
2420                                 return 1;
2421                         continue;
2422                 default:
2423                         g_error ("unknown type 0x%02x in check_call_signature",
2424                                  simple_type->type);
2425                 }
2426         }
2427         return 0;
2428 }
2429
2430 static int
2431 callvirt_to_call (int opcode)
2432 {
2433         switch (opcode) {
2434         case OP_CALL_MEMBASE:
2435                 return OP_CALL;
2436         case OP_VOIDCALL_MEMBASE:
2437                 return OP_VOIDCALL;
2438         case OP_FCALL_MEMBASE:
2439                 return OP_FCALL;
2440         case OP_RCALL_MEMBASE:
2441                 return OP_RCALL;
2442         case OP_VCALL_MEMBASE:
2443                 return OP_VCALL;
2444         case OP_LCALL_MEMBASE:
2445                 return OP_LCALL;
2446         default:
2447                 g_assert_not_reached ();
2448         }
2449
2450         return -1;
2451 }
2452
2453 static int
2454 callvirt_to_call_reg (int opcode)
2455 {
2456         switch (opcode) {
2457         case OP_CALL_MEMBASE:
2458                 return OP_CALL_REG;
2459         case OP_VOIDCALL_MEMBASE:
2460                 return OP_VOIDCALL_REG;
2461         case OP_FCALL_MEMBASE:
2462                 return OP_FCALL_REG;
2463         case OP_RCALL_MEMBASE:
2464                 return OP_RCALL_REG;
2465         case OP_VCALL_MEMBASE:
2466                 return OP_VCALL_REG;
2467         case OP_LCALL_MEMBASE:
2468                 return OP_LCALL_REG;
2469         default:
2470                 g_assert_not_reached ();
2471         }
2472
2473         return -1;
2474 }
2475
2476 /* Either METHOD or IMT_ARG needs to be set */
2477 static void
2478 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2479 {
2480         int method_reg;
2481
2482         if (COMPILE_LLVM (cfg)) {
2483                 if (imt_arg) {
2484                         method_reg = alloc_preg (cfg);
2485                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2486                 } else {
2487                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2488                         method_reg = ins->dreg;
2489                 }
2490
2491 #ifdef ENABLE_LLVM
2492                 call->imt_arg_reg = method_reg;
2493 #endif
2494                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2495                 return;
2496         }
2497
2498         if (imt_arg) {
2499                 method_reg = alloc_preg (cfg);
2500                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2501         } else {
2502                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2503                 method_reg = ins->dreg;
2504         }
2505
2506         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2507 }
2508
2509 static MonoJumpInfo *
2510 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2511 {
2512         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2513
2514         ji->ip.i = ip;
2515         ji->type = type;
2516         ji->data.target = target;
2517
2518         return ji;
2519 }
2520
2521 static int
2522 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2523 {
2524         if (cfg->gshared)
2525                 return mono_class_check_context_used (klass);
2526         else
2527                 return 0;
2528 }
2529
2530 static int
2531 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2532 {
2533         if (cfg->gshared)
2534                 return mono_method_check_context_used (method);
2535         else
2536                 return 0;
2537 }
2538
2539 /*
2540  * check_method_sharing:
2541  *
2542  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2543  */
2544 static void
2545 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2546 {
2547         gboolean pass_vtable = FALSE;
2548         gboolean pass_mrgctx = FALSE;
2549
2550         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2551                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2552                 gboolean sharable = FALSE;
2553
2554                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2555                         sharable = TRUE;
2556
2557                 /*
2558                  * Pass vtable iff target method might
2559                  * be shared, which means that sharing
2560                  * is enabled for its class and its
2561                  * context is sharable (and it's not a
2562                  * generic method).
2563                  */
2564                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2565                         pass_vtable = TRUE;
2566         }
2567
2568         if (mini_method_get_context (cmethod) &&
2569                 mini_method_get_context (cmethod)->method_inst) {
2570                 g_assert (!pass_vtable);
2571
2572                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2573                         pass_mrgctx = TRUE;
2574                 } else {
2575                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2576                                 pass_mrgctx = TRUE;
2577                 }
2578         }
2579
2580         if (out_pass_vtable)
2581                 *out_pass_vtable = pass_vtable;
2582         if (out_pass_mrgctx)
2583                 *out_pass_mrgctx = pass_mrgctx;
2584 }
2585
2586 inline static MonoCallInst *
2587 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2588                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2589 {
2590         MonoType *sig_ret;
2591         MonoCallInst *call;
2592 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2593         int i;
2594 #endif
2595
2596         if (cfg->llvm_only)
2597                 tail = FALSE;
2598
2599         if (tail) {
2600                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2601
2602                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2603         } else
2604                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2605
2606         call->args = args;
2607         call->signature = sig;
2608         call->rgctx_reg = rgctx;
2609         sig_ret = mini_get_underlying_type (sig->ret);
2610
2611         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2612
2613         if (tail) {
2614                 if (mini_type_is_vtype (sig_ret)) {
2615                         call->vret_var = cfg->vret_addr;
2616                         //g_assert_not_reached ();
2617                 }
2618         } else if (mini_type_is_vtype (sig_ret)) {
2619                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2620                 MonoInst *loada;
2621
2622                 temp->backend.is_pinvoke = sig->pinvoke;
2623
2624                 /*
2625                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2626                  * address of return value to increase optimization opportunities.
2627                  * Before vtype decomposition, the dreg of the call ins itself represents the
2628                  * fact the call modifies the return value. After decomposition, the call will
2629                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2630                  * will be transformed into an LDADDR.
2631                  */
2632                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2633                 loada->dreg = alloc_preg (cfg);
2634                 loada->inst_p0 = temp;
2635                 /* We reference the call too since call->dreg could change during optimization */
2636                 loada->inst_p1 = call;
2637                 MONO_ADD_INS (cfg->cbb, loada);
2638
2639                 call->inst.dreg = temp->dreg;
2640
2641                 call->vret_var = loada;
2642         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2643                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2644
2645 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2646         if (COMPILE_SOFT_FLOAT (cfg)) {
2647                 /*
2648                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2649                  * an icall, but that cannot be done during the call sequence since it would clobber
2650                  * the call registers + the stack. So we do it before emitting the call.
2651                  */
2652                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2653                         MonoType *t;
2654                         MonoInst *in = call->args [i];
2655
2656                         if (i >= sig->hasthis)
2657                                 t = sig->params [i - sig->hasthis];
2658                         else
2659                                 t = &mono_defaults.int_class->byval_arg;
2660                         t = mono_type_get_underlying_type (t);
2661
2662                         if (!t->byref && t->type == MONO_TYPE_R4) {
2663                                 MonoInst *iargs [1];
2664                                 MonoInst *conv;
2665
2666                                 iargs [0] = in;
2667                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2668
2669                                 /* The result will be in an int vreg */
2670                                 call->args [i] = conv;
2671                         }
2672                 }
2673         }
2674 #endif
2675
2676         call->need_unbox_trampoline = unbox_trampoline;
2677
2678 #ifdef ENABLE_LLVM
2679         if (COMPILE_LLVM (cfg))
2680                 mono_llvm_emit_call (cfg, call);
2681         else
2682                 mono_arch_emit_call (cfg, call);
2683 #else
2684         mono_arch_emit_call (cfg, call);
2685 #endif
2686
2687         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2688         cfg->flags |= MONO_CFG_HAS_CALLS;
2689
2690         return call;
2691 }
2692
2693 static void
2694 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2695 {
2696         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2697         cfg->uses_rgctx_reg = TRUE;
2698         call->rgctx_reg = TRUE;
2699 #ifdef ENABLE_LLVM
2700         call->rgctx_arg_reg = rgctx_reg;
2701 #endif
2702 }
2703
2704 inline static MonoInst*
2705 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2706 {
2707         MonoCallInst *call;
2708         MonoInst *ins;
2709         int rgctx_reg = -1;
2710         gboolean check_sp = FALSE;
2711
2712         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2713                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2714
2715                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2716                         check_sp = TRUE;
2717         }
2718
2719         if (rgctx_arg) {
2720                 rgctx_reg = mono_alloc_preg (cfg);
2721                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2722         }
2723
2724         if (check_sp) {
2725                 if (!cfg->stack_inbalance_var)
2726                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2727
2728                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2729                 ins->dreg = cfg->stack_inbalance_var->dreg;
2730                 MONO_ADD_INS (cfg->cbb, ins);
2731         }
2732
2733         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2734
2735         call->inst.sreg1 = addr->dreg;
2736
2737         if (imt_arg)
2738                 emit_imt_argument (cfg, call, NULL, imt_arg);
2739
2740         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2741
2742         if (check_sp) {
2743                 int sp_reg;
2744
2745                 sp_reg = mono_alloc_preg (cfg);
2746
2747                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2748                 ins->dreg = sp_reg;
2749                 MONO_ADD_INS (cfg->cbb, ins);
2750
2751                 /* Restore the stack so we don't crash when throwing the exception */
2752                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2753                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2754                 MONO_ADD_INS (cfg->cbb, ins);
2755
2756                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2757                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2758         }
2759
2760         if (rgctx_arg)
2761                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2762
2763         return (MonoInst*)call;
2764 }
2765
2766 static MonoInst*
2767 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2768
2769 static MonoInst*
2770 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2771 static MonoInst*
2772 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2773
2774 static MonoInst*
2775 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2776                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2777 {
2778 #ifndef DISABLE_REMOTING
2779         gboolean might_be_remote = FALSE;
2780 #endif
2781         gboolean virtual_ = this_ins != NULL;
2782         gboolean enable_for_aot = TRUE;
2783         int context_used;
2784         MonoCallInst *call;
2785         MonoInst *call_target = NULL;
2786         int rgctx_reg = 0;
2787         gboolean need_unbox_trampoline;
2788
2789         if (!sig)
2790                 sig = mono_method_signature (method);
2791
2792         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2793                 g_assert_not_reached ();
2794
2795         if (rgctx_arg) {
2796                 rgctx_reg = mono_alloc_preg (cfg);
2797                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2798         }
2799
2800         if (method->string_ctor) {
2801                 /* Create the real signature */
2802                 /* FIXME: Cache these */
2803                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2804                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2805
2806                 sig = ctor_sig;
2807         }
2808
2809         context_used = mini_method_check_context_used (cfg, method);
2810
2811 #ifndef DISABLE_REMOTING
2812         might_be_remote = this_ins && sig->hasthis &&
2813                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2814                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2815
2816         if (might_be_remote && context_used) {
2817                 MonoInst *addr;
2818
2819                 g_assert (cfg->gshared);
2820
2821                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2822
2823                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2824         }
2825 #endif
2826
2827         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2828                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2829
2830         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2831
2832         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2833
2834 #ifndef DISABLE_REMOTING
2835         if (might_be_remote)
2836                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2837         else
2838 #endif
2839                 call->method = method;
2840         call->inst.flags |= MONO_INST_HAS_METHOD;
2841         call->inst.inst_left = this_ins;
2842         call->tail_call = tail;
2843
2844         if (virtual_) {
2845                 int vtable_reg, slot_reg, this_reg;
2846                 int offset;
2847
2848                 this_reg = this_ins->dreg;
2849
2850                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2851                         MonoInst *dummy_use;
2852
2853                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2854
2855                         /* Make a call to delegate->invoke_impl */
2856                         call->inst.inst_basereg = this_reg;
2857                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2858                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2859
2860                         /* We must emit a dummy use here because the delegate trampoline will
2861                         replace the 'this' argument with the delegate target making this activation
2862                         no longer a root for the delegate.
2863                         This is an issue for delegates that target collectible code such as dynamic
2864                         methods of GC'able assemblies.
2865
2866                         For a test case look into #667921.
2867
2868                         FIXME: a dummy use is not the best way to do it as the local register allocator
2869                         will put it on a caller save register and spil it around the call.
2870                         Ideally, we would either put it on a callee save register or only do the store part.
2871                          */
2872                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2873
2874                         return (MonoInst*)call;
2875                 }
2876
2877                 if ((!cfg->compile_aot || enable_for_aot) &&
2878                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2879                          (MONO_METHOD_IS_FINAL (method) &&
2880                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2881                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2882                         /*
2883                          * the method is not virtual, we just need to ensure this is not null
2884                          * and then we can call the method directly.
2885                          */
2886 #ifndef DISABLE_REMOTING
2887                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2888                                 /*
2889                                  * The check above ensures method is not gshared, this is needed since
2890                                  * gshared methods can't have wrappers.
2891                                  */
2892                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2893                         }
2894 #endif
2895
2896                         if (!method->string_ctor)
2897                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2898
2899                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2900                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2901                         /*
2902                          * the method is virtual, but we can statically dispatch since either
2903                          * it's class or the method itself are sealed.
2904                          * But first we need to ensure it's not a null reference.
2905                          */
2906                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2907
2908                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2909                 } else if (call_target) {
2910                         vtable_reg = alloc_preg (cfg);
2911                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2912
2913                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2914                         call->inst.sreg1 = call_target->dreg;
2915                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2916                 } else {
2917                         vtable_reg = alloc_preg (cfg);
2918                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2919                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2920                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2921                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2922                                 slot_reg = vtable_reg;
2923                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2924                         } else {
2925                                 slot_reg = vtable_reg;
2926                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2927                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2928                                 if (imt_arg) {
2929                                         g_assert (mono_method_signature (method)->generic_param_count);
2930                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2931                                 }
2932                         }
2933
2934                         call->inst.sreg1 = slot_reg;
2935                         call->inst.inst_offset = offset;
2936                         call->is_virtual = TRUE;
2937                 }
2938         }
2939
2940         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2941
2942         if (rgctx_arg)
2943                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2944
2945         return (MonoInst*)call;
2946 }
2947
2948 MonoInst*
2949 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2950 {
2951         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2952 }
2953
2954 MonoInst*
2955 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2956                                            MonoInst **args)
2957 {
2958         MonoCallInst *call;
2959
2960         g_assert (sig);
2961
2962         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2963         call->fptr = func;
2964
2965         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2966
2967         return (MonoInst*)call;
2968 }
2969
2970 MonoInst*
2971 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2972 {
2973         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2974
2975         g_assert (info);
2976
2977         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2978 }
2979
2980 /*
2981  * mono_emit_abs_call:
2982  *
2983  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2984  */
2985 inline static MonoInst*
2986 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2987                                         MonoMethodSignature *sig, MonoInst **args)
2988 {
2989         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2990         MonoInst *ins;
2991
2992         /*
2993          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2994          * handle it.
2995          */
2996         if (cfg->abs_patches == NULL)
2997                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2998         g_hash_table_insert (cfg->abs_patches, ji, ji);
2999         ins = mono_emit_native_call (cfg, ji, sig, args);
3000         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
3001         return ins;
3002 }
3003
3004 static MonoMethodSignature*
3005 sig_to_rgctx_sig (MonoMethodSignature *sig)
3006 {
3007         // FIXME: memory allocation
3008         MonoMethodSignature *res;
3009         int i;
3010
3011         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
3012         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
3013         res->param_count = sig->param_count + 1;
3014         for (i = 0; i < sig->param_count; ++i)
3015                 res->params [i] = sig->params [i];
3016         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3017         return res;
3018 }
3019
3020 /* Make an indirect call to FSIG passing an additional argument */
3021 static MonoInst*
3022 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3023 {
3024         MonoMethodSignature *csig;
3025         MonoInst *args_buf [16];
3026         MonoInst **args;
3027         int i, pindex, tmp_reg;
3028
3029         /* Make a call with an rgctx/extra arg */
3030         if (fsig->param_count + 2 < 16)
3031                 args = args_buf;
3032         else
3033                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3034         pindex = 0;
3035         if (fsig->hasthis)
3036                 args [pindex ++] = orig_args [0];
3037         for (i = 0; i < fsig->param_count; ++i)
3038                 args [pindex ++] = orig_args [fsig->hasthis + i];
3039         tmp_reg = alloc_preg (cfg);
3040         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3041         csig = sig_to_rgctx_sig (fsig);
3042         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3043 }
3044
3045 /* Emit an indirect call to the function descriptor ADDR */
3046 static MonoInst*
3047 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3048 {
3049         int addr_reg, arg_reg;
3050         MonoInst *call_target;
3051
3052         g_assert (cfg->llvm_only);
3053
3054         /*
3055          * addr points to a <addr, arg> pair, load both of them, and
3056          * make a call to addr, passing arg as an extra arg.
3057          */
3058         addr_reg = alloc_preg (cfg);
3059         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3060         arg_reg = alloc_preg (cfg);
3061         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3062
3063         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3064 }
3065
3066 static gboolean
3067 direct_icalls_enabled (MonoCompile *cfg)
3068 {
3069         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3070 #ifdef TARGET_AMD64
3071         if (cfg->compile_llvm && !cfg->llvm_only)
3072                 return FALSE;
3073 #endif
3074         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3075                 return FALSE;
3076         return TRUE;
3077 }
3078
3079 MonoInst*
3080 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
3081 {
3082         /*
3083          * Call the jit icall without a wrapper if possible.
3084          * The wrapper is needed for the following reasons:
3085          * - to handle exceptions thrown using mono_raise_exceptions () from the
3086          *   icall function. The EH code needs the lmf frame pushed by the
3087          *   wrapper to be able to unwind back to managed code.
3088          * - to be able to do stack walks for asynchronously suspended
3089          *   threads when debugging.
3090          */
3091         if (info->no_raise && direct_icalls_enabled (cfg)) {
3092                 char *name;
3093                 int costs;
3094
3095                 if (!info->wrapper_method) {
3096                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3097                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3098                         g_free (name);
3099                         mono_memory_barrier ();
3100                 }
3101
3102                 /*
3103                  * Inline the wrapper method, which is basically a call to the C icall, and
3104                  * an exception check.
3105                  */
3106                 costs = inline_method (cfg, info->wrapper_method, NULL,
3107                                                            args, NULL, il_offset, TRUE);
3108                 g_assert (costs > 0);
3109                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3110
3111                 return args [0];
3112         } else {
3113                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3114         }
3115 }
3116
3117 static MonoInst*
3118 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3119 {
3120         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3121                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3122                         int widen_op = -1;
3123
3124                         /*
3125                          * Native code might return non register sized integers
3126                          * without initializing the upper bits.
3127                          */
3128                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3129                         case OP_LOADI1_MEMBASE:
3130                                 widen_op = OP_ICONV_TO_I1;
3131                                 break;
3132                         case OP_LOADU1_MEMBASE:
3133                                 widen_op = OP_ICONV_TO_U1;
3134                                 break;
3135                         case OP_LOADI2_MEMBASE:
3136                                 widen_op = OP_ICONV_TO_I2;
3137                                 break;
3138                         case OP_LOADU2_MEMBASE:
3139                                 widen_op = OP_ICONV_TO_U2;
3140                                 break;
3141                         default:
3142                                 break;
3143                         }
3144
3145                         if (widen_op != -1) {
3146                                 int dreg = alloc_preg (cfg);
3147                                 MonoInst *widen;
3148
3149                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3150                                 widen->type = ins->type;
3151                                 ins = widen;
3152                         }
3153                 }
3154         }
3155
3156         return ins;
3157 }
3158
3159 static MonoMethod*
3160 get_memcpy_method (void)
3161 {
3162         static MonoMethod *memcpy_method = NULL;
3163         if (!memcpy_method) {
3164                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3165                 if (!memcpy_method)
3166                         g_error ("Old corlib found. Install a new one");
3167         }
3168         return memcpy_method;
3169 }
3170
3171 static void
3172 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3173 {
3174         MonoClassField *field;
3175         gpointer iter = NULL;
3176
3177         while ((field = mono_class_get_fields (klass, &iter))) {
3178                 int foffset;
3179
3180                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3181                         continue;
3182                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3183                 if (mini_type_is_reference (mono_field_get_type (field))) {
3184                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3185                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3186                 } else {
3187                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3188                         if (field_class->has_references)
3189                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3190                 }
3191         }
3192 }
3193
3194 static void
3195 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3196 {
3197         int card_table_shift_bits;
3198         gpointer card_table_mask;
3199         guint8 *card_table;
3200         MonoInst *dummy_use;
3201         int nursery_shift_bits;
3202         size_t nursery_size;
3203
3204         if (!cfg->gen_write_barriers)
3205                 return;
3206
3207         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3208
3209         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3210
3211         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3212                 MonoInst *wbarrier;
3213
3214                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3215                 wbarrier->sreg1 = ptr->dreg;
3216                 wbarrier->sreg2 = value->dreg;
3217                 MONO_ADD_INS (cfg->cbb, wbarrier);
3218         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3219                 int offset_reg = alloc_preg (cfg);
3220                 int card_reg;
3221                 MonoInst *ins;
3222
3223                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3224                 if (card_table_mask)
3225                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3226
3227                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3228                  * IMM's larger than 32bits.
3229                  */
3230                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3231                 card_reg = ins->dreg;
3232
3233                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3234                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3235         } else {
3236                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3237                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3238         }
3239
3240         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3241 }
3242
3243 static gboolean
3244 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3245 {
3246         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3247         unsigned need_wb = 0;
3248
3249         if (align == 0)
3250                 align = 4;
3251
3252         /*types with references can't have alignment smaller than sizeof(void*) */
3253         if (align < SIZEOF_VOID_P)
3254                 return FALSE;
3255
3256         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3257         if (size > 32 * SIZEOF_VOID_P)
3258                 return FALSE;
3259
3260         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3261
3262         /* We don't unroll more than 5 stores to avoid code bloat. */
3263         if (size > 5 * SIZEOF_VOID_P) {
3264                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3265                 size += (SIZEOF_VOID_P - 1);
3266                 size &= ~(SIZEOF_VOID_P - 1);
3267
3268                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3269                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3270                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3271                 return TRUE;
3272         }
3273
3274         destreg = iargs [0]->dreg;
3275         srcreg = iargs [1]->dreg;
3276         offset = 0;
3277
3278         dest_ptr_reg = alloc_preg (cfg);
3279         tmp_reg = alloc_preg (cfg);
3280
3281         /*tmp = dreg*/
3282         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3283
3284         while (size >= SIZEOF_VOID_P) {
3285                 MonoInst *load_inst;
3286                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3287                 load_inst->dreg = tmp_reg;
3288                 load_inst->inst_basereg = srcreg;
3289                 load_inst->inst_offset = offset;
3290                 MONO_ADD_INS (cfg->cbb, load_inst);
3291
3292                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3293
3294                 if (need_wb & 0x1)
3295                         emit_write_barrier (cfg, iargs [0], load_inst);
3296
3297                 offset += SIZEOF_VOID_P;
3298                 size -= SIZEOF_VOID_P;
3299                 need_wb >>= 1;
3300
3301                 /*tmp += sizeof (void*)*/
3302                 if (size >= SIZEOF_VOID_P) {
3303                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3304                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3305                 }
3306         }
3307
3308         /* Those cannot be references since size < sizeof (void*) */
3309         while (size >= 4) {
3310                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3311                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3312                 offset += 4;
3313                 size -= 4;
3314         }
3315
3316         while (size >= 2) {
3317                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3318                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3319                 offset += 2;
3320                 size -= 2;
3321         }
3322
3323         while (size >= 1) {
3324                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3325                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3326                 offset += 1;
3327                 size -= 1;
3328         }
3329
3330         return TRUE;
3331 }
3332
3333 /*
3334  * Emit code to copy a valuetype of type @klass whose address is stored in
3335  * @src->dreg to memory whose address is stored at @dest->dreg.
3336  */
3337 void
3338 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3339 {
3340         MonoInst *iargs [4];
3341         int n;
3342         guint32 align = 0;
3343         MonoMethod *memcpy_method;
3344         MonoInst *size_ins = NULL;
3345         MonoInst *memcpy_ins = NULL;
3346
3347         g_assert (klass);
3348         if (cfg->gshared)
3349                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3350
3351         /*
3352          * This check breaks with spilled vars... need to handle it during verification anyway.
3353          * g_assert (klass && klass == src->klass && klass == dest->klass);
3354          */
3355
3356         if (mini_is_gsharedvt_klass (klass)) {
3357                 g_assert (!native);
3358                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3359                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3360         }
3361
3362         if (native)
3363                 n = mono_class_native_size (klass, &align);
3364         else
3365                 n = mono_class_value_size (klass, &align);
3366
3367         /* if native is true there should be no references in the struct */
3368         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3369                 /* Avoid barriers when storing to the stack */
3370                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3371                           (dest->opcode == OP_LDADDR))) {
3372                         int context_used;
3373
3374                         iargs [0] = dest;
3375                         iargs [1] = src;
3376
3377                         context_used = mini_class_check_context_used (cfg, klass);
3378
3379                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3380                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3381                                 return;
3382                         } else if (context_used) {
3383                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3384                         }  else {
3385                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3386                                 if (!cfg->compile_aot)
3387                                         mono_class_compute_gc_descriptor (klass);
3388                         }
3389
3390                         if (size_ins)
3391                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3392                         else
3393                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3394                         return;
3395                 }
3396         }
3397
3398         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3399                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3400                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3401         } else {
3402                 iargs [0] = dest;
3403                 iargs [1] = src;
3404                 if (size_ins)
3405                         iargs [2] = size_ins;
3406                 else
3407                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3408
3409                 memcpy_method = get_memcpy_method ();
3410                 if (memcpy_ins)
3411                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3412                 else
3413                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3414         }
3415 }
3416
3417 static MonoMethod*
3418 get_memset_method (void)
3419 {
3420         static MonoMethod *memset_method = NULL;
3421         if (!memset_method) {
3422                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3423                 if (!memset_method)
3424                         g_error ("Old corlib found. Install a new one");
3425         }
3426         return memset_method;
3427 }
3428
3429 void
3430 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3431 {
3432         MonoInst *iargs [3];
3433         int n;
3434         guint32 align;
3435         MonoMethod *memset_method;
3436         MonoInst *size_ins = NULL;
3437         MonoInst *bzero_ins = NULL;
3438         static MonoMethod *bzero_method;
3439
3440         /* FIXME: Optimize this for the case when dest is an LDADDR */
3441         mono_class_init (klass);
3442         if (mini_is_gsharedvt_klass (klass)) {
3443                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3444                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3445                 if (!bzero_method)
3446                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3447                 g_assert (bzero_method);
3448                 iargs [0] = dest;
3449                 iargs [1] = size_ins;
3450                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3451                 return;
3452         }
3453
3454         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3455
3456         n = mono_class_value_size (klass, &align);
3457
3458         if (n <= sizeof (gpointer) * 8) {
3459                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3460         }
3461         else {
3462                 memset_method = get_memset_method ();
3463                 iargs [0] = dest;
3464                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3465                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3466                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3467         }
3468 }
3469
3470 /*
3471  * emit_get_rgctx:
3472  *
3473  *   Emit IR to return either the this pointer for instance method,
3474  * or the mrgctx for static methods.
3475  */
3476 static MonoInst*
3477 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3478 {
3479         MonoInst *this_ins = NULL;
3480
3481         g_assert (cfg->gshared);
3482
3483         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3484                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3485                         !method->klass->valuetype)
3486                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3487
3488         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3489                 MonoInst *mrgctx_loc, *mrgctx_var;
3490
3491                 g_assert (!this_ins);
3492                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3493
3494                 mrgctx_loc = mono_get_vtable_var (cfg);
3495                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3496
3497                 return mrgctx_var;
3498         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3499                 MonoInst *vtable_loc, *vtable_var;
3500
3501                 g_assert (!this_ins);
3502
3503                 vtable_loc = mono_get_vtable_var (cfg);
3504                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3505
3506                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3507                         MonoInst *mrgctx_var = vtable_var;
3508                         int vtable_reg;
3509
3510                         vtable_reg = alloc_preg (cfg);
3511                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3512                         vtable_var->type = STACK_PTR;
3513                 }
3514
3515                 return vtable_var;
3516         } else {
3517                 MonoInst *ins;
3518                 int vtable_reg;
3519
3520                 vtable_reg = alloc_preg (cfg);
3521                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3522                 return ins;
3523         }
3524 }
3525
3526 static MonoJumpInfoRgctxEntry *
3527 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3528 {
3529         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3530         res->method = method;
3531         res->in_mrgctx = in_mrgctx;
3532         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3533         res->data->type = patch_type;
3534         res->data->data.target = patch_data;
3535         res->info_type = info_type;
3536
3537         return res;
3538 }
3539
3540 static inline MonoInst*
3541 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3542 {
3543         MonoInst *args [16];
3544         MonoInst *call;
3545
3546         // FIXME: No fastpath since the slot is not a compile time constant
3547         args [0] = rgctx;
3548         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3549         if (entry->in_mrgctx)
3550                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3551         else
3552                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3553         return call;
3554 #if 0
3555         /*
3556          * FIXME: This can be called during decompose, which is a problem since it creates
3557          * new bblocks.
3558          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3559          */
3560         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3561         gboolean mrgctx;
3562         MonoBasicBlock *is_null_bb, *end_bb;
3563         MonoInst *res, *ins, *call;
3564         MonoInst *args[16];
3565
3566         slot = mini_get_rgctx_entry_slot (entry);
3567
3568         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3569         index = MONO_RGCTX_SLOT_INDEX (slot);
3570         if (mrgctx)
3571                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3572         for (depth = 0; ; ++depth) {
3573                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3574
3575                 if (index < size - 1)
3576                         break;
3577                 index -= size - 1;
3578         }
3579
3580         NEW_BBLOCK (cfg, end_bb);
3581         NEW_BBLOCK (cfg, is_null_bb);
3582
3583         if (mrgctx) {
3584                 rgctx_reg = rgctx->dreg;
3585         } else {
3586                 rgctx_reg = alloc_preg (cfg);
3587
3588                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3589                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3590                 NEW_BBLOCK (cfg, is_null_bb);
3591
3592                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3593                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3594         }
3595
3596         for (i = 0; i < depth; ++i) {
3597                 int array_reg = alloc_preg (cfg);
3598
3599                 /* load ptr to next array */
3600                 if (mrgctx && i == 0)
3601                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3602                 else
3603                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3604                 rgctx_reg = array_reg;
3605                 /* is the ptr null? */
3606                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3607                 /* if yes, jump to actual trampoline */
3608                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3609         }
3610
3611         /* fetch slot */
3612         val_reg = alloc_preg (cfg);
3613         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3614         /* is the slot null? */
3615         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3616         /* if yes, jump to actual trampoline */
3617         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3618
3619         /* Fastpath */
3620         res_reg = alloc_preg (cfg);
3621         MONO_INST_NEW (cfg, ins, OP_MOVE);
3622         ins->dreg = res_reg;
3623         ins->sreg1 = val_reg;
3624         MONO_ADD_INS (cfg->cbb, ins);
3625         res = ins;
3626         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3627
3628         /* Slowpath */
3629         MONO_START_BB (cfg, is_null_bb);
3630         args [0] = rgctx;
3631         EMIT_NEW_ICONST (cfg, args [1], index);
3632         if (mrgctx)
3633                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3634         else
3635                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3636         MONO_INST_NEW (cfg, ins, OP_MOVE);
3637         ins->dreg = res_reg;
3638         ins->sreg1 = call->dreg;
3639         MONO_ADD_INS (cfg->cbb, ins);
3640         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3641
3642         MONO_START_BB (cfg, end_bb);
3643
3644         return res;
3645 #endif
3646 }
3647
3648 /*
3649  * emit_rgctx_fetch:
3650  *
3651  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3652  * given by RGCTX.
3653  */
3654 static inline MonoInst*
3655 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3656 {
3657         if (cfg->llvm_only)
3658                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3659         else
3660                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3661 }
3662
3663 static MonoInst*
3664 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3665                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3666 {
3667         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
3668         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3669
3670         return emit_rgctx_fetch (cfg, rgctx, entry);
3671 }
3672
3673 static MonoInst*
3674 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3675                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3676 {
3677         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_SIGNATURE, sig, rgctx_type);
3678         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3679
3680         return emit_rgctx_fetch (cfg, rgctx, entry);
3681 }
3682
3683 static MonoInst*
3684 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3685                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3686 {
3687         MonoJumpInfoGSharedVtCall *call_info;
3688         MonoJumpInfoRgctxEntry *entry;
3689         MonoInst *rgctx;
3690
3691         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3692         call_info->sig = sig;
3693         call_info->method = cmethod;
3694
3695         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_CALL, call_info, rgctx_type);
3696         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3697
3698         return emit_rgctx_fetch (cfg, rgctx, entry);
3699 }
3700
3701 /*
3702  * emit_get_rgctx_virt_method:
3703  *
3704  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3705  */
3706 static MonoInst*
3707 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3708                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3709 {
3710         MonoJumpInfoVirtMethod *info;
3711         MonoJumpInfoRgctxEntry *entry;
3712         MonoInst *rgctx;
3713
3714         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3715         info->klass = klass;
3716         info->method = virt_method;
3717
3718         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_VIRT_METHOD, info, rgctx_type);
3719         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3720
3721         return emit_rgctx_fetch (cfg, rgctx, entry);
3722 }
3723
3724 static MonoInst*
3725 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3726                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3727 {
3728         MonoJumpInfoRgctxEntry *entry;
3729         MonoInst *rgctx;
3730
3731         entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_GSHAREDVT_METHOD, info, MONO_RGCTX_INFO_METHOD_GSHAREDVT_INFO);
3732         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3733
3734         return emit_rgctx_fetch (cfg, rgctx, entry);
3735 }
3736
3737 /*
3738  * emit_get_rgctx_method:
3739  *
3740  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3741  * normal constants, else emit a load from the rgctx.
3742  */
3743 static MonoInst*
3744 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3745                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3746 {
3747         if (!context_used) {
3748                 MonoInst *ins;
3749
3750                 switch (rgctx_type) {
3751                 case MONO_RGCTX_INFO_METHOD:
3752                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3753                         return ins;
3754                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3755                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3756                         return ins;
3757                 default:
3758                         g_assert_not_reached ();
3759                 }
3760         } else {
3761                 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3762                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3763
3764                 return emit_rgctx_fetch (cfg, rgctx, entry);
3765         }
3766 }
3767
3768 static MonoInst*
3769 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3770                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3771 {
3772         MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3773         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3774
3775         return emit_rgctx_fetch (cfg, rgctx, entry);
3776 }
3777
3778 static int
3779 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3780 {
3781         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3782         MonoRuntimeGenericContextInfoTemplate *template_;
3783         int i, idx;
3784
3785         g_assert (info);
3786
3787         for (i = 0; i < info->num_entries; ++i) {
3788                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3789
3790                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3791                         return i;
3792         }
3793
3794         if (info->num_entries == info->count_entries) {
3795                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3796                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3797
3798                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3799
3800                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3801                 info->entries = new_entries;
3802                 info->count_entries = new_count_entries;
3803         }
3804
3805         idx = info->num_entries;
3806         template_ = &info->entries [idx];
3807         template_->info_type = rgctx_type;
3808         template_->data = data;
3809
3810         info->num_entries ++;
3811
3812         return idx;
3813 }
3814
3815 /*
3816  * emit_get_gsharedvt_info:
3817  *
3818  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3819  */
3820 static MonoInst*
3821 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3822 {
3823         MonoInst *ins;
3824         int idx, dreg;
3825
3826         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3827         /* Load info->entries [idx] */
3828         dreg = alloc_preg (cfg);
3829         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3830
3831         return ins;
3832 }
3833
3834 static MonoInst*
3835 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3836 {
3837         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3838 }
3839
3840 /*
3841  * On return the caller must check @klass for load errors.
3842  */
3843 static void
3844 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3845 {
3846         MonoInst *vtable_arg;
3847         int context_used;
3848
3849         context_used = mini_class_check_context_used (cfg, klass);
3850
3851         if (context_used) {
3852                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3853                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3854         } else {
3855                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3856
3857                 if (!vtable)
3858                         return;
3859                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3860         }
3861
3862         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3863                 MonoInst *ins;
3864
3865                 /*
3866                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3867                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3868                  */
3869                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3870                 ins->sreg1 = vtable_arg->dreg;
3871                 MONO_ADD_INS (cfg->cbb, ins);
3872         } else {
3873                 static int byte_offset = -1;
3874                 static guint8 bitmask;
3875                 int bits_reg, inited_reg;
3876                 MonoBasicBlock *inited_bb;
3877                 MonoInst *args [16];
3878
3879                 if (byte_offset < 0)
3880                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3881
3882                 bits_reg = alloc_ireg (cfg);
3883                 inited_reg = alloc_ireg (cfg);
3884
3885                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3886                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3887
3888                 NEW_BBLOCK (cfg, inited_bb);
3889
3890                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3891                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3892
3893                 args [0] = vtable_arg;
3894                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3895
3896                 MONO_START_BB (cfg, inited_bb);
3897         }
3898 }
3899
3900 static void
3901 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3902 {
3903         MonoInst *ins;
3904
3905         if (cfg->gen_seq_points && cfg->method == method) {
3906                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3907                 if (nonempty_stack)
3908                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3909                 MONO_ADD_INS (cfg->cbb, ins);
3910         }
3911 }
3912
3913 static void
3914 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3915 {
3916         if (mini_get_debug_options ()->better_cast_details) {
3917                 int vtable_reg = alloc_preg (cfg);
3918                 int klass_reg = alloc_preg (cfg);
3919                 MonoBasicBlock *is_null_bb = NULL;
3920                 MonoInst *tls_get;
3921                 int to_klass_reg, context_used;
3922
3923                 if (null_check) {
3924                         NEW_BBLOCK (cfg, is_null_bb);
3925
3926                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3927                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3928                 }
3929
3930                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3931                 if (!tls_get) {
3932                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3933                         exit (1);
3934                 }
3935
3936                 MONO_ADD_INS (cfg->cbb, tls_get);
3937                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3938                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3939
3940                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3941
3942                 context_used = mini_class_check_context_used (cfg, klass);
3943                 if (context_used) {
3944                         MonoInst *class_ins;
3945
3946                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3947                         to_klass_reg = class_ins->dreg;
3948                 } else {
3949                         to_klass_reg = alloc_preg (cfg);
3950                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3951                 }
3952                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3953
3954                 if (null_check)
3955                         MONO_START_BB (cfg, is_null_bb);
3956         }
3957 }
3958
3959 static void
3960 reset_cast_details (MonoCompile *cfg)
3961 {
3962         /* Reset the variables holding the cast details */
3963         if (mini_get_debug_options ()->better_cast_details) {
3964                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3965
3966                 MONO_ADD_INS (cfg->cbb, tls_get);
3967                 /* It is enough to reset the from field */
3968                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3969         }
3970 }
3971
3972 /*
3973  * On return the caller must check @array_class for load errors
3974  */
3975 static void
3976 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3977 {
3978         int vtable_reg = alloc_preg (cfg);
3979         int context_used;
3980
3981         context_used = mini_class_check_context_used (cfg, array_class);
3982
3983         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3984
3985         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3986
3987         if (cfg->opt & MONO_OPT_SHARED) {
3988                 int class_reg = alloc_preg (cfg);
3989                 MonoInst *ins;
3990
3991                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3992                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3993                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3994         } else if (context_used) {
3995                 MonoInst *vtable_ins;
3996
3997                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3998                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3999         } else {
4000                 if (cfg->compile_aot) {
4001                         int vt_reg;
4002                         MonoVTable *vtable;
4003
4004                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4005                                 return;
4006                         vt_reg = alloc_preg (cfg);
4007                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4008                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4009                 } else {
4010                         MonoVTable *vtable;
4011                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4012                                 return;
4013                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4014                 }
4015         }
4016
4017         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4018
4019         reset_cast_details (cfg);
4020 }
4021
4022 /**
4023  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4024  * generic code is generated.
4025  */
4026 static MonoInst*
4027 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4028 {
4029         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4030
4031         if (context_used) {
4032                 MonoInst *rgctx, *addr;
4033
4034                 /* FIXME: What if the class is shared?  We might not
4035                    have to get the address of the method from the
4036                    RGCTX. */
4037                 addr = emit_get_rgctx_method (cfg, context_used, method,
4038                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4039                 if (cfg->llvm_only && cfg->gsharedvt) {
4040                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4041                 } else {
4042                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4043
4044                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4045                 }
4046         } else {
4047                 gboolean pass_vtable, pass_mrgctx;
4048                 MonoInst *rgctx_arg = NULL;
4049
4050                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4051                 g_assert (!pass_mrgctx);
4052
4053                 if (pass_vtable) {
4054                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4055
4056                         g_assert (vtable);
4057                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4058                 }
4059
4060                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4061         }
4062 }
4063
4064 static MonoInst*
4065 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4066 {
4067         MonoInst *add;
4068         int obj_reg;
4069         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4070         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4071         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4072         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4073
4074         obj_reg = sp [0]->dreg;
4075         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4076         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4077
4078         /* FIXME: generics */
4079         g_assert (klass->rank == 0);
4080
4081         // Check rank == 0
4082         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4083         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4084
4085         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4086         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4087
4088         if (context_used) {
4089                 MonoInst *element_class;
4090
4091                 /* This assertion is from the unboxcast insn */
4092                 g_assert (klass->rank == 0);
4093
4094                 element_class = emit_get_rgctx_klass (cfg, context_used,
4095                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4096
4097                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4098                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4099         } else {
4100                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4101                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4102                 reset_cast_details (cfg);
4103         }
4104
4105         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4106         MONO_ADD_INS (cfg->cbb, add);
4107         add->type = STACK_MP;
4108         add->klass = klass;
4109
4110         return add;
4111 }
4112
4113 static MonoInst*
4114 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4115 {
4116         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4117         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4118         MonoInst *ins;
4119         int dreg, addr_reg;
4120
4121         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4122
4123         /* obj */
4124         args [0] = obj;
4125
4126         /* klass */
4127         args [1] = klass_inst;
4128
4129         /* CASTCLASS */
4130         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4131
4132         NEW_BBLOCK (cfg, is_ref_bb);
4133         NEW_BBLOCK (cfg, is_nullable_bb);
4134         NEW_BBLOCK (cfg, end_bb);
4135         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4136         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4137         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4138
4139         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4140         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4141
4142         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4143         addr_reg = alloc_dreg (cfg, STACK_MP);
4144
4145         /* Non-ref case */
4146         /* UNBOX */
4147         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4148         MONO_ADD_INS (cfg->cbb, addr);
4149
4150         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4151
4152         /* Ref case */
4153         MONO_START_BB (cfg, is_ref_bb);
4154
4155         /* Save the ref to a temporary */
4156         dreg = alloc_ireg (cfg);
4157         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4158         addr->dreg = addr_reg;
4159         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4160         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4161
4162         /* Nullable case */
4163         MONO_START_BB (cfg, is_nullable_bb);
4164
4165         {
4166                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4167                 MonoInst *unbox_call;
4168                 MonoMethodSignature *unbox_sig;
4169
4170                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4171                 unbox_sig->ret = &klass->byval_arg;
4172                 unbox_sig->param_count = 1;
4173                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4174
4175                 if (cfg->llvm_only)
4176                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4177                 else
4178                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4179
4180                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4181                 addr->dreg = addr_reg;
4182         }
4183
4184         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4185
4186         /* End */
4187         MONO_START_BB (cfg, end_bb);
4188
4189         /* LDOBJ */
4190         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4191
4192         return ins;
4193 }
4194
4195 /*
4196  * Returns NULL and set the cfg exception on error.
4197  */
4198 static MonoInst*
4199 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4200 {
4201         MonoInst *iargs [2];
4202         void *alloc_ftn;
4203
4204         if (context_used) {
4205                 MonoInst *data;
4206                 MonoRgctxInfoType rgctx_info;
4207                 MonoInst *iargs [2];
4208                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4209
4210                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4211
4212                 if (cfg->opt & MONO_OPT_SHARED)
4213                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4214                 else
4215                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4216                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4217
4218                 if (cfg->opt & MONO_OPT_SHARED) {
4219                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4220                         iargs [1] = data;
4221                         alloc_ftn = ves_icall_object_new;
4222                 } else {
4223                         iargs [0] = data;
4224                         alloc_ftn = ves_icall_object_new_specific;
4225                 }
4226
4227                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4228                         if (known_instance_size) {
4229                                 int size = mono_class_instance_size (klass);
4230                                 if (size < sizeof (MonoObject))
4231                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4232
4233                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4234                         }
4235                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4236                 }
4237
4238                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4239         }
4240
4241         if (cfg->opt & MONO_OPT_SHARED) {
4242                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4243                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4244
4245                 alloc_ftn = ves_icall_object_new;
4246         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4247                 /* This happens often in argument checking code, eg. throw new FooException... */
4248                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4249                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4250                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4251         } else {
4252                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4253                 MonoMethod *managed_alloc = NULL;
4254                 gboolean pass_lw;
4255
4256                 if (!vtable) {
4257                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4258                         cfg->exception_ptr = klass;
4259                         return NULL;
4260                 }
4261
4262                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4263
4264                 if (managed_alloc) {
4265                         int size = mono_class_instance_size (klass);
4266                         if (size < sizeof (MonoObject))
4267                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4268
4269                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4270                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4271                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4272                 }
4273                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4274                 if (pass_lw) {
4275                         guint32 lw = vtable->klass->instance_size;
4276                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4277                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4278                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4279                 }
4280                 else {
4281                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4282                 }
4283         }
4284
4285         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4286 }
4287
4288 /*
4289  * Returns NULL and set the cfg exception on error.
4290  */
4291 static MonoInst*
4292 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4293 {
4294         MonoInst *alloc, *ins;
4295
4296         if (mono_class_is_nullable (klass)) {
4297                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4298
4299                 if (context_used) {
4300                         if (cfg->llvm_only && cfg->gsharedvt) {
4301                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4302                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4303                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4304                         } else {
4305                                 /* FIXME: What if the class is shared?  We might not
4306                                    have to get the method address from the RGCTX. */
4307                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4308                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4309                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4310
4311                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4312                         }
4313                 } else {
4314                         gboolean pass_vtable, pass_mrgctx;
4315                         MonoInst *rgctx_arg = NULL;
4316
4317                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4318                         g_assert (!pass_mrgctx);
4319
4320                         if (pass_vtable) {
4321                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4322
4323                                 g_assert (vtable);
4324                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4325                         }
4326
4327                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4328                 }
4329         }
4330
4331         if (mini_is_gsharedvt_klass (klass)) {
4332                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4333                 MonoInst *res, *is_ref, *src_var, *addr;
4334                 int dreg;
4335
4336                 dreg = alloc_ireg (cfg);
4337
4338                 NEW_BBLOCK (cfg, is_ref_bb);
4339                 NEW_BBLOCK (cfg, is_nullable_bb);
4340                 NEW_BBLOCK (cfg, end_bb);
4341                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4342                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4343                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4344
4345                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4346                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4347
4348                 /* Non-ref case */
4349                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4350                 if (!alloc)
4351                         return NULL;
4352                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4353                 ins->opcode = OP_STOREV_MEMBASE;
4354
4355                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4356                 res->type = STACK_OBJ;
4357                 res->klass = klass;
4358                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4359
4360                 /* Ref case */
4361                 MONO_START_BB (cfg, is_ref_bb);
4362
4363                 /* val is a vtype, so has to load the value manually */
4364                 src_var = get_vreg_to_inst (cfg, val->dreg);
4365                 if (!src_var)
4366                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4367                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4368                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4369                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4370
4371                 /* Nullable case */
4372                 MONO_START_BB (cfg, is_nullable_bb);
4373
4374                 {
4375                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4376                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4377                         MonoInst *box_call;
4378                         MonoMethodSignature *box_sig;
4379
4380                         /*
4381                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4382                          * construct that method at JIT time, so have to do things by hand.
4383                          */
4384                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4385                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4386                         box_sig->param_count = 1;
4387                         box_sig->params [0] = &klass->byval_arg;
4388
4389                         if (cfg->llvm_only)
4390                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4391                         else
4392                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4393                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4394                         res->type = STACK_OBJ;
4395                         res->klass = klass;
4396                 }
4397
4398                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4399
4400                 MONO_START_BB (cfg, end_bb);
4401
4402                 return res;
4403         } else {
4404                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4405                 if (!alloc)
4406                         return NULL;
4407
4408                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4409                 return alloc;
4410         }
4411 }
4412
4413 static gboolean
4414 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4415 {
4416         int i;
4417         MonoGenericContainer *container;
4418         MonoGenericInst *ginst;
4419
4420         if (klass->generic_class) {
4421                 container = klass->generic_class->container_class->generic_container;
4422                 ginst = klass->generic_class->context.class_inst;
4423         } else if (klass->generic_container && context_used) {
4424                 container = klass->generic_container;
4425                 ginst = container->context.class_inst;
4426         } else {
4427                 return FALSE;
4428         }
4429
4430         for (i = 0; i < container->type_argc; ++i) {
4431                 MonoType *type;
4432                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4433                         continue;
4434                 type = ginst->type_argv [i];
4435                 if (mini_type_is_reference (type))
4436                         return TRUE;
4437         }
4438         return FALSE;
4439 }
4440
4441 static GHashTable* direct_icall_type_hash;
4442
4443 static gboolean
4444 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4445 {
4446         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4447         if (!direct_icalls_enabled (cfg))
4448                 return FALSE;
4449
4450         /*
4451          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4452          * Whitelist a few icalls for now.
4453          */
4454         if (!direct_icall_type_hash) {
4455                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4456
4457                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4458                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4459                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4460                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4461                 mono_memory_barrier ();
4462                 direct_icall_type_hash = h;
4463         }
4464
4465         if (cmethod->klass == mono_defaults.math_class)
4466                 return TRUE;
4467         /* No locking needed */
4468         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4469                 return TRUE;
4470         return FALSE;
4471 }
4472
4473 #define is_complex_isinst(klass) ((klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || mono_class_is_marshalbyref (klass) || (klass->flags & TYPE_ATTRIBUTE_SEALED) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
4474
4475 static MonoInst*
4476 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4477 {
4478         MonoMethod *mono_castclass;
4479         MonoInst *res;
4480
4481         mono_castclass = mono_marshal_get_castclass_with_cache ();
4482
4483         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4484         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4485         reset_cast_details (cfg);
4486
4487         return res;
4488 }
4489
4490 static int
4491 get_castclass_cache_idx (MonoCompile *cfg)
4492 {
4493         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4494         cfg->castclass_cache_index ++;
4495         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4496 }
4497
4498 static MonoInst*
4499 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4500 {
4501         MonoInst *args [3];
4502         int idx;
4503
4504         /* obj */
4505         args [0] = obj;
4506
4507         /* klass */
4508         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4509
4510         /* inline cache*/
4511         idx = get_castclass_cache_idx (cfg);
4512         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4513
4514         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4515         return emit_castclass_with_cache (cfg, klass, args);
4516 }
4517
4518 /*
4519  * Returns NULL and set the cfg exception on error.
4520  */
4521 static MonoInst*
4522 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, int *inline_costs)
4523 {
4524         MonoBasicBlock *is_null_bb;
4525         int obj_reg = src->dreg;
4526         int vtable_reg = alloc_preg (cfg);
4527         int context_used;
4528         MonoInst *klass_inst = NULL, *res;
4529
4530         context_used = mini_class_check_context_used (cfg, klass);
4531
4532         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4533                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4534                 (*inline_costs) += 2;
4535                 return res;
4536         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4537                 MonoMethod *mono_castclass;
4538                 MonoInst *iargs [1];
4539                 int costs;
4540
4541                 mono_castclass = mono_marshal_get_castclass (klass);
4542                 iargs [0] = src;
4543
4544                 save_cast_details (cfg, klass, src->dreg, TRUE);
4545                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4546                                                            iargs, ip, cfg->real_offset, TRUE);
4547                 reset_cast_details (cfg);
4548                 CHECK_CFG_EXCEPTION;
4549                 g_assert (costs > 0);
4550
4551                 cfg->real_offset += 5;
4552
4553                 (*inline_costs) += costs;
4554
4555                 return src;
4556         }
4557
4558         if (context_used) {
4559                 MonoInst *args [3];
4560
4561                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4562                         MonoInst *cache_ins;
4563
4564                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4565
4566                         /* obj */
4567                         args [0] = src;
4568
4569                         /* klass - it's the second element of the cache entry*/
4570                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4571
4572                         /* cache */
4573                         args [2] = cache_ins;
4574
4575                         return emit_castclass_with_cache (cfg, klass, args);
4576                 }
4577
4578                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4579         }
4580
4581         NEW_BBLOCK (cfg, is_null_bb);
4582
4583         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4584         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4585
4586         save_cast_details (cfg, klass, obj_reg, FALSE);
4587
4588         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4589                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4590                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4591         } else {
4592                 int klass_reg = alloc_preg (cfg);
4593
4594                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4595
4596                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4597                         /* the remoting code is broken, access the class for now */
4598                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4599                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4600                                 if (!vt) {
4601                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4602                                         cfg->exception_ptr = klass;
4603                                         return NULL;
4604                                 }
4605                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4606                         } else {
4607                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4608                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4609                         }
4610                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4611                 } else {
4612                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4613                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4614                 }
4615         }
4616
4617         MONO_START_BB (cfg, is_null_bb);
4618
4619         reset_cast_details (cfg);
4620
4621         return src;
4622
4623 exception_exit:
4624         return NULL;
4625 }
4626
4627 /*
4628  * Returns NULL and set the cfg exception on error.
4629  */
4630 static MonoInst*
4631 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4632 {
4633         MonoInst *ins;
4634         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4635         int obj_reg = src->dreg;
4636         int vtable_reg = alloc_preg (cfg);
4637         int res_reg = alloc_ireg_ref (cfg);
4638         MonoInst *klass_inst = NULL;
4639
4640         if (context_used) {
4641                 MonoInst *args [3];
4642
4643                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4644                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4645                         MonoInst *cache_ins;
4646
4647                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4648
4649                         /* obj */
4650                         args [0] = src;
4651
4652                         /* klass - it's the second element of the cache entry*/
4653                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4654
4655                         /* cache */
4656                         args [2] = cache_ins;
4657
4658                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4659                 }
4660
4661                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4662         }
4663
4664         NEW_BBLOCK (cfg, is_null_bb);
4665         NEW_BBLOCK (cfg, false_bb);
4666         NEW_BBLOCK (cfg, end_bb);
4667
4668         /* Do the assignment at the beginning, so the other assignment can be if converted */
4669         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4670         ins->type = STACK_OBJ;
4671         ins->klass = klass;
4672
4673         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4674         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4675
4676         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4677
4678         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4679                 g_assert (!context_used);
4680                 /* the is_null_bb target simply copies the input register to the output */
4681                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4682         } else {
4683                 int klass_reg = alloc_preg (cfg);
4684
4685                 if (klass->rank) {
4686                         int rank_reg = alloc_preg (cfg);
4687                         int eclass_reg = alloc_preg (cfg);
4688
4689                         g_assert (!context_used);
4690                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4691                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4692                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4693                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4694                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4695                         if (klass->cast_class == mono_defaults.object_class) {
4696                                 int parent_reg = alloc_preg (cfg);
4697                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4698                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4699                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4700                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4701                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4702                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4703                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4704                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4705                         } else if (klass->cast_class == mono_defaults.enum_class) {
4706                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4707                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4708                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4709                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4710                         } else {
4711                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4712                                         /* Check that the object is a vector too */
4713                                         int bounds_reg = alloc_preg (cfg);
4714                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4715                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4716                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4717                                 }
4718
4719                                 /* the is_null_bb target simply copies the input register to the output */
4720                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4721                         }
4722                 } else if (mono_class_is_nullable (klass)) {
4723                         g_assert (!context_used);
4724                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4725                         /* the is_null_bb target simply copies the input register to the output */
4726                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4727                 } else {
4728                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4729                                 g_assert (!context_used);
4730                                 /* the remoting code is broken, access the class for now */
4731                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4732                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4733                                         if (!vt) {
4734                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4735                                                 cfg->exception_ptr = klass;
4736                                                 return NULL;
4737                                         }
4738                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4739                                 } else {
4740                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4741                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4742                                 }
4743                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4744                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4745                         } else {
4746                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4747                                 /* the is_null_bb target simply copies the input register to the output */
4748                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4749                         }
4750                 }
4751         }
4752
4753         MONO_START_BB (cfg, false_bb);
4754
4755         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4756         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4757
4758         MONO_START_BB (cfg, is_null_bb);
4759
4760         MONO_START_BB (cfg, end_bb);
4761
4762         return ins;
4763 }
4764
4765 static MonoInst*
4766 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4767 {
4768         /* This opcode takes as input an object reference and a class, and returns:
4769         0) if the object is an instance of the class,
4770         1) if the object is not instance of the class,
4771         2) if the object is a proxy whose type cannot be determined */
4772
4773         MonoInst *ins;
4774 #ifndef DISABLE_REMOTING
4775         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4776 #else
4777         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4778 #endif
4779         int obj_reg = src->dreg;
4780         int dreg = alloc_ireg (cfg);
4781         int tmp_reg;
4782 #ifndef DISABLE_REMOTING
4783         int klass_reg = alloc_preg (cfg);
4784 #endif
4785
4786         NEW_BBLOCK (cfg, true_bb);
4787         NEW_BBLOCK (cfg, false_bb);
4788         NEW_BBLOCK (cfg, end_bb);
4789 #ifndef DISABLE_REMOTING
4790         NEW_BBLOCK (cfg, false2_bb);
4791         NEW_BBLOCK (cfg, no_proxy_bb);
4792 #endif
4793
4794         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4795         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4796
4797         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4798 #ifndef DISABLE_REMOTING
4799                 NEW_BBLOCK (cfg, interface_fail_bb);
4800 #endif
4801
4802                 tmp_reg = alloc_preg (cfg);
4803                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4804 #ifndef DISABLE_REMOTING
4805                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4806                 MONO_START_BB (cfg, interface_fail_bb);
4807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4808
4809                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4810
4811                 tmp_reg = alloc_preg (cfg);
4812                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4813                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4814                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4815 #else
4816                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4817 #endif
4818         } else {
4819 #ifndef DISABLE_REMOTING
4820                 tmp_reg = alloc_preg (cfg);
4821                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4822                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4823
4824                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4825                 tmp_reg = alloc_preg (cfg);
4826                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4827                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4828
4829                 tmp_reg = alloc_preg (cfg);
4830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4831                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4832                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4833
4834                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4836
4837                 MONO_START_BB (cfg, no_proxy_bb);
4838
4839                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4840 #else
4841                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4842 #endif
4843         }
4844
4845         MONO_START_BB (cfg, false_bb);
4846
4847         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4848         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4849
4850 #ifndef DISABLE_REMOTING
4851         MONO_START_BB (cfg, false2_bb);
4852
4853         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4854         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4855 #endif
4856
4857         MONO_START_BB (cfg, true_bb);
4858
4859         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4860
4861         MONO_START_BB (cfg, end_bb);
4862
4863         /* FIXME: */
4864         MONO_INST_NEW (cfg, ins, OP_ICONST);
4865         ins->dreg = dreg;
4866         ins->type = STACK_I4;
4867
4868         return ins;
4869 }
4870
4871 static MonoInst*
4872 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4873 {
4874         /* This opcode takes as input an object reference and a class, and returns:
4875         0) if the object is an instance of the class,
4876         1) if the object is a proxy whose type cannot be determined
4877         an InvalidCastException exception is thrown otherwhise*/
4878
4879         MonoInst *ins;
4880 #ifndef DISABLE_REMOTING
4881         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4882 #else
4883         MonoBasicBlock *ok_result_bb;
4884 #endif
4885         int obj_reg = src->dreg;
4886         int dreg = alloc_ireg (cfg);
4887         int tmp_reg = alloc_preg (cfg);
4888
4889 #ifndef DISABLE_REMOTING
4890         int klass_reg = alloc_preg (cfg);
4891         NEW_BBLOCK (cfg, end_bb);
4892 #endif
4893
4894         NEW_BBLOCK (cfg, ok_result_bb);
4895
4896         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4897         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4898
4899         save_cast_details (cfg, klass, obj_reg, FALSE);
4900
4901         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4902 #ifndef DISABLE_REMOTING
4903                 NEW_BBLOCK (cfg, interface_fail_bb);
4904
4905                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4906                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4907                 MONO_START_BB (cfg, interface_fail_bb);
4908                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4909
4910                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4911
4912                 tmp_reg = alloc_preg (cfg);
4913                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4914                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4915                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4916
4917                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4918                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4919 #else
4920                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4921                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4922                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4923 #endif
4924         } else {
4925 #ifndef DISABLE_REMOTING
4926                 NEW_BBLOCK (cfg, no_proxy_bb);
4927
4928                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4929                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4930                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4931
4932                 tmp_reg = alloc_preg (cfg);
4933                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4934                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4935
4936                 tmp_reg = alloc_preg (cfg);
4937                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4938                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4939                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4940
4941                 NEW_BBLOCK (cfg, fail_1_bb);
4942
4943                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4944
4945                 MONO_START_BB (cfg, fail_1_bb);
4946
4947                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4948                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4949
4950                 MONO_START_BB (cfg, no_proxy_bb);
4951
4952                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4953 #else
4954                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4955 #endif
4956         }
4957
4958         MONO_START_BB (cfg, ok_result_bb);
4959
4960         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4961
4962 #ifndef DISABLE_REMOTING
4963         MONO_START_BB (cfg, end_bb);
4964 #endif
4965
4966         /* FIXME: */
4967         MONO_INST_NEW (cfg, ins, OP_ICONST);
4968         ins->dreg = dreg;
4969         ins->type = STACK_I4;
4970
4971         return ins;
4972 }
4973
4974 static G_GNUC_UNUSED MonoInst*
4975 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4976 {
4977         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4978         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4979         gboolean is_i4;
4980
4981         switch (enum_type->type) {
4982         case MONO_TYPE_I8:
4983         case MONO_TYPE_U8:
4984 #if SIZEOF_REGISTER == 8
4985         case MONO_TYPE_I:
4986         case MONO_TYPE_U:
4987 #endif
4988                 is_i4 = FALSE;
4989                 break;
4990         default:
4991                 is_i4 = TRUE;
4992                 break;
4993         }
4994
4995         {
4996                 MonoInst *load, *and_, *cmp, *ceq;
4997                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4998                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4999                 int dest_reg = alloc_ireg (cfg);
5000
5001                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5002                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5003                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5004                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5005
5006                 ceq->type = STACK_I4;
5007
5008                 if (!is_i4) {
5009                         load = mono_decompose_opcode (cfg, load);
5010                         and_ = mono_decompose_opcode (cfg, and_);
5011                         cmp = mono_decompose_opcode (cfg, cmp);
5012                         ceq = mono_decompose_opcode (cfg, ceq);
5013                 }
5014
5015                 return ceq;
5016         }
5017 }
5018
5019 /*
5020  * Returns NULL and set the cfg exception on error.
5021  */
5022 static G_GNUC_UNUSED MonoInst*
5023 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5024 {
5025         MonoInst *ptr;
5026         int dreg;
5027         gpointer trampoline;
5028         MonoInst *obj, *method_ins, *tramp_ins;
5029         MonoDomain *domain;
5030         guint8 **code_slot;
5031
5032         if (virtual_ && !cfg->llvm_only) {
5033                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5034                 g_assert (invoke);
5035
5036                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5037                         return NULL;
5038         }
5039
5040         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5041         if (!obj)
5042                 return NULL;
5043
5044         /* Inline the contents of mono_delegate_ctor */
5045
5046         /* Set target field */
5047         /* Optimize away setting of NULL target */
5048         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5049                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5050                 if (cfg->gen_write_barriers) {
5051                         dreg = alloc_preg (cfg);
5052                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5053                         emit_write_barrier (cfg, ptr, target);
5054                 }
5055         }
5056
5057         /* Set method field */
5058         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5059         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5060
5061         /*
5062          * To avoid looking up the compiled code belonging to the target method
5063          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5064          * store it, and we fill it after the method has been compiled.
5065          */
5066         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5067                 MonoInst *code_slot_ins;
5068
5069                 if (context_used) {
5070                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5071                 } else {
5072                         domain = mono_domain_get ();
5073                         mono_domain_lock (domain);
5074                         if (!domain_jit_info (domain)->method_code_hash)
5075                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5076                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5077                         if (!code_slot) {
5078                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5079                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5080                         }
5081                         mono_domain_unlock (domain);
5082
5083                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5084                 }
5085                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5086         }
5087
5088         if (cfg->llvm_only) {
5089                 MonoInst *args [16];
5090
5091                 if (virtual_) {
5092                         args [0] = obj;
5093                         args [1] = target;
5094                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5095                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5096                 } else {
5097                         args [0] = obj;
5098                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5099                 }
5100
5101                 return obj;
5102         }
5103
5104         if (cfg->compile_aot) {
5105                 MonoDelegateClassMethodPair *del_tramp;
5106
5107                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5108                 del_tramp->klass = klass;
5109                 del_tramp->method = context_used ? NULL : method;
5110                 del_tramp->is_virtual = virtual_;
5111                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5112         } else {
5113                 if (virtual_)
5114                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5115                 else
5116                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5117                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5118         }
5119
5120         /* Set invoke_impl field */
5121         if (virtual_) {
5122                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5123         } else {
5124                 dreg = alloc_preg (cfg);
5125                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5126                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5127
5128                 dreg = alloc_preg (cfg);
5129                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5130                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5131         }
5132
5133         dreg = alloc_preg (cfg);
5134         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5135         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5136
5137         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5138
5139         return obj;
5140 }
5141
5142 static MonoInst*
5143 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5144 {
5145         MonoJitICallInfo *info;
5146
5147         /* Need to register the icall so it gets an icall wrapper */
5148         info = mono_get_array_new_va_icall (rank);
5149
5150         cfg->flags |= MONO_CFG_HAS_VARARGS;
5151
5152         /* mono_array_new_va () needs a vararg calling convention */
5153         cfg->exception_message = g_strdup ("array-new");
5154         cfg->disable_llvm = TRUE;
5155
5156         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5157         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5158 }
5159
5160 /*
5161  * handle_constrained_gsharedvt_call:
5162  *
5163  *   Handle constrained calls where the receiver is a gsharedvt type.
5164  * Return the instruction representing the call. Set the cfg exception on failure.
5165  */
5166 static MonoInst*
5167 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5168                                                                    gboolean *ref_emit_widen)
5169 {
5170         MonoInst *ins = NULL;
5171         gboolean emit_widen = *ref_emit_widen;
5172
5173         /*
5174          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5175          * 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
5176          * pack the arguments into an array, and do the rest of the work in in an icall.
5177          */
5178         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5179                 (MONO_TYPE_IS_VOID (fsig->ret) || MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_IS_REFERENCE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret) || mini_is_gsharedvt_type (fsig->ret)) &&
5180                 (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]))))) {
5181                 MonoInst *args [16];
5182
5183                 /*
5184                  * This case handles calls to
5185                  * - object:ToString()/Equals()/GetHashCode(),
5186                  * - System.IComparable<T>:CompareTo()
5187                  * - System.IEquatable<T>:Equals ()
5188                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5189                  */
5190
5191                 args [0] = sp [0];
5192                 if (mono_method_check_context_used (cmethod))
5193                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5194                 else
5195                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5196                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5197
5198                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5199                 if (fsig->hasthis && fsig->param_count) {
5200                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5201                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5202                         ins->dreg = alloc_preg (cfg);
5203                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5204                         MONO_ADD_INS (cfg->cbb, ins);
5205                         args [4] = ins;
5206
5207                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5208                                 int addr_reg, deref_arg_reg;
5209
5210                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5211                                 deref_arg_reg = alloc_preg (cfg);
5212                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5213                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5214
5215                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5216                                 addr_reg = ins->dreg;
5217                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5218                         } else {
5219                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5220                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5221                         }
5222                 } else {
5223                         EMIT_NEW_ICONST (cfg, args [3], 0);
5224                         EMIT_NEW_ICONST (cfg, args [4], 0);
5225                 }
5226                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5227                 emit_widen = FALSE;
5228
5229                 if (mini_is_gsharedvt_type (fsig->ret)) {
5230                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5231                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5232                         MonoInst *add;
5233
5234                         /* Unbox */
5235                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5236                         MONO_ADD_INS (cfg->cbb, add);
5237                         /* Load value */
5238                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5239                         MONO_ADD_INS (cfg->cbb, ins);
5240                         /* ins represents the call result */
5241                 }
5242         } else {
5243                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5244         }
5245
5246         *ref_emit_widen = emit_widen;
5247
5248         return ins;
5249
5250  exception_exit:
5251         return NULL;
5252 }
5253
5254 static void
5255 mono_emit_load_got_addr (MonoCompile *cfg)
5256 {
5257         MonoInst *getaddr, *dummy_use;
5258
5259         if (!cfg->got_var || cfg->got_var_allocated)
5260                 return;
5261
5262         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5263         getaddr->cil_code = cfg->header->code;
5264         getaddr->dreg = cfg->got_var->dreg;
5265
5266         /* Add it to the start of the first bblock */
5267         if (cfg->bb_entry->code) {
5268                 getaddr->next = cfg->bb_entry->code;
5269                 cfg->bb_entry->code = getaddr;
5270         }
5271         else
5272                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5273
5274         cfg->got_var_allocated = TRUE;
5275
5276         /*
5277          * Add a dummy use to keep the got_var alive, since real uses might
5278          * only be generated by the back ends.
5279          * Add it to end_bblock, so the variable's lifetime covers the whole
5280          * method.
5281          * It would be better to make the usage of the got var explicit in all
5282          * cases when the backend needs it (i.e. calls, throw etc.), so this
5283          * wouldn't be needed.
5284          */
5285         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5286         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5287 }
5288
5289 static int inline_limit;
5290 static gboolean inline_limit_inited;
5291
5292 static gboolean
5293 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5294 {
5295         MonoMethodHeaderSummary header;
5296         MonoVTable *vtable;
5297 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5298         MonoMethodSignature *sig = mono_method_signature (method);
5299         int i;
5300 #endif
5301
5302         if (cfg->disable_inline)
5303                 return FALSE;
5304         if (cfg->gshared)
5305                 return FALSE;
5306
5307         if (cfg->inline_depth > 10)
5308                 return FALSE;
5309
5310         if (!mono_method_get_header_summary (method, &header))
5311                 return FALSE;
5312
5313         /*runtime, icall and pinvoke are checked by summary call*/
5314         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5315             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5316             (mono_class_is_marshalbyref (method->klass)) ||
5317             header.has_clauses)
5318                 return FALSE;
5319
5320         /* also consider num_locals? */
5321         /* Do the size check early to avoid creating vtables */
5322         if (!inline_limit_inited) {
5323                 if (g_getenv ("MONO_INLINELIMIT"))
5324                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5325                 else
5326                         inline_limit = INLINE_LENGTH_LIMIT;
5327                 inline_limit_inited = TRUE;
5328         }
5329         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5330                 return FALSE;
5331
5332         /*
5333          * if we can initialize the class of the method right away, we do,
5334          * otherwise we don't allow inlining if the class needs initialization,
5335          * since it would mean inserting a call to mono_runtime_class_init()
5336          * inside the inlined code
5337          */
5338         if (!(cfg->opt & MONO_OPT_SHARED)) {
5339                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5340                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5341                         vtable = mono_class_vtable (cfg->domain, method->klass);
5342                         if (!vtable)
5343                                 return FALSE;
5344                         if (!cfg->compile_aot) {
5345                                 MonoError error;
5346                                 if (!mono_runtime_class_init_full (vtable, &error))
5347                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5348                         }
5349                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5350                         if (cfg->run_cctors && method->klass->has_cctor) {
5351                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5352                                 if (!method->klass->runtime_info)
5353                                         /* No vtable created yet */
5354                                         return FALSE;
5355                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5356                                 if (!vtable)
5357                                         return FALSE;
5358                                 /* This makes so that inline cannot trigger */
5359                                 /* .cctors: too many apps depend on them */
5360                                 /* running with a specific order... */
5361                                 if (! vtable->initialized)
5362                                         return FALSE;
5363                                 MonoError error;
5364                                 if (!mono_runtime_class_init_full (vtable, &error))
5365                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5366                         }
5367                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5368                         if (!method->klass->runtime_info)
5369                                 /* No vtable created yet */
5370                                 return FALSE;
5371                         vtable = mono_class_vtable (cfg->domain, method->klass);
5372                         if (!vtable)
5373                                 return FALSE;
5374                         if (!vtable->initialized)
5375                                 return FALSE;
5376                 }
5377         } else {
5378                 /*
5379                  * If we're compiling for shared code
5380                  * the cctor will need to be run at aot method load time, for example,
5381                  * or at the end of the compilation of the inlining method.
5382                  */
5383                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5384                         return FALSE;
5385         }
5386
5387 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5388         if (mono_arch_is_soft_float ()) {
5389                 /* FIXME: */
5390                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5391                         return FALSE;
5392                 for (i = 0; i < sig->param_count; ++i)
5393                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5394                                 return FALSE;
5395         }
5396 #endif
5397
5398         if (g_list_find (cfg->dont_inline, method))
5399                 return FALSE;
5400
5401         return TRUE;
5402 }
5403
5404 static gboolean
5405 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5406 {
5407         if (!cfg->compile_aot) {
5408                 g_assert (vtable);
5409                 if (vtable->initialized)
5410                         return FALSE;
5411         }
5412
5413         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5414                 if (cfg->method == method)
5415                         return FALSE;
5416         }
5417
5418         if (!mono_class_needs_cctor_run (klass, method))
5419                 return FALSE;
5420
5421         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5422                 /* The initialization is already done before the method is called */
5423                 return FALSE;
5424
5425         return TRUE;
5426 }
5427
5428 static MonoInst*
5429 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5430 {
5431         MonoInst *ins;
5432         guint32 size;
5433         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5434         int context_used;
5435
5436         if (mini_is_gsharedvt_variable_klass (klass)) {
5437                 size = -1;
5438         } else {
5439                 mono_class_init (klass);
5440                 size = mono_class_array_element_size (klass);
5441         }
5442
5443         mult_reg = alloc_preg (cfg);
5444         array_reg = arr->dreg;
5445         index_reg = index->dreg;
5446
5447 #if SIZEOF_REGISTER == 8
5448         /* The array reg is 64 bits but the index reg is only 32 */
5449         if (COMPILE_LLVM (cfg)) {
5450                 /* Not needed */
5451                 index2_reg = index_reg;
5452         } else {
5453                 index2_reg = alloc_preg (cfg);
5454                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5455         }
5456 #else
5457         if (index->type == STACK_I8) {
5458                 index2_reg = alloc_preg (cfg);
5459                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5460         } else {
5461                 index2_reg = index_reg;
5462         }
5463 #endif
5464
5465         if (bcheck)
5466                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5467
5468 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5469         if (size == 1 || size == 2 || size == 4 || size == 8) {
5470                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5471
5472                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5473                 ins->klass = mono_class_get_element_class (klass);
5474                 ins->type = STACK_MP;
5475
5476                 return ins;
5477         }
5478 #endif
5479
5480         add_reg = alloc_ireg_mp (cfg);
5481
5482         if (size == -1) {
5483                 MonoInst *rgctx_ins;
5484
5485                 /* gsharedvt */
5486                 g_assert (cfg->gshared);
5487                 context_used = mini_class_check_context_used (cfg, klass);
5488                 g_assert (context_used);
5489                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5490                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5491         } else {
5492                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5493         }
5494         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5495         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5496         ins->klass = mono_class_get_element_class (klass);
5497         ins->type = STACK_MP;
5498         MONO_ADD_INS (cfg->cbb, ins);
5499
5500         return ins;
5501 }
5502
5503 static MonoInst*
5504 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5505 {
5506         int bounds_reg = alloc_preg (cfg);
5507         int add_reg = alloc_ireg_mp (cfg);
5508         int mult_reg = alloc_preg (cfg);
5509         int mult2_reg = alloc_preg (cfg);
5510         int low1_reg = alloc_preg (cfg);
5511         int low2_reg = alloc_preg (cfg);
5512         int high1_reg = alloc_preg (cfg);
5513         int high2_reg = alloc_preg (cfg);
5514         int realidx1_reg = alloc_preg (cfg);
5515         int realidx2_reg = alloc_preg (cfg);
5516         int sum_reg = alloc_preg (cfg);
5517         int index1, index2, tmpreg;
5518         MonoInst *ins;
5519         guint32 size;
5520
5521         mono_class_init (klass);
5522         size = mono_class_array_element_size (klass);
5523
5524         index1 = index_ins1->dreg;
5525         index2 = index_ins2->dreg;
5526
5527 #if SIZEOF_REGISTER == 8
5528         /* The array reg is 64 bits but the index reg is only 32 */
5529         if (COMPILE_LLVM (cfg)) {
5530                 /* Not needed */
5531         } else {
5532                 tmpreg = alloc_preg (cfg);
5533                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5534                 index1 = tmpreg;
5535                 tmpreg = alloc_preg (cfg);
5536                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5537                 index2 = tmpreg;
5538         }
5539 #else
5540         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5541         tmpreg = -1;
5542 #endif
5543
5544         /* range checking */
5545         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5546                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5547
5548         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5549                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5550         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5551         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5552                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5553         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5554         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5555
5556         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5557                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5558         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5559         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5560                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5561         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5562         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5563
5564         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5565         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5566         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5567         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5568         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5569
5570         ins->type = STACK_MP;
5571         ins->klass = klass;
5572         MONO_ADD_INS (cfg->cbb, ins);
5573
5574         return ins;
5575 }
5576
5577 static MonoInst*
5578 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5579 {
5580         int rank;
5581         MonoInst *addr;
5582         MonoMethod *addr_method;
5583         int element_size;
5584         MonoClass *eclass = cmethod->klass->element_class;
5585
5586         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5587
5588         if (rank == 1)
5589                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5590
5591         /* emit_ldelema_2 depends on OP_LMUL */
5592         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5593                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5594         }
5595
5596         if (mini_is_gsharedvt_variable_klass (eclass))
5597                 element_size = 0;
5598         else
5599                 element_size = mono_class_array_element_size (eclass);
5600         addr_method = mono_marshal_get_array_address (rank, element_size);
5601         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5602
5603         return addr;
5604 }
5605
5606 static MonoBreakPolicy
5607 always_insert_breakpoint (MonoMethod *method)
5608 {
5609         return MONO_BREAK_POLICY_ALWAYS;
5610 }
5611
5612 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5613
5614 /**
5615  * mono_set_break_policy:
5616  * policy_callback: the new callback function
5617  *
5618  * Allow embedders to decide wherther to actually obey breakpoint instructions
5619  * (both break IL instructions and Debugger.Break () method calls), for example
5620  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5621  * untrusted or semi-trusted code.
5622  *
5623  * @policy_callback will be called every time a break point instruction needs to
5624  * be inserted with the method argument being the method that calls Debugger.Break()
5625  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5626  * if it wants the breakpoint to not be effective in the given method.
5627  * #MONO_BREAK_POLICY_ALWAYS is the default.
5628  */
5629 void
5630 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5631 {
5632         if (policy_callback)
5633                 break_policy_func = policy_callback;
5634         else
5635                 break_policy_func = always_insert_breakpoint;
5636 }
5637
5638 static gboolean
5639 should_insert_brekpoint (MonoMethod *method) {
5640         switch (break_policy_func (method)) {
5641         case MONO_BREAK_POLICY_ALWAYS:
5642                 return TRUE;
5643         case MONO_BREAK_POLICY_NEVER:
5644                 return FALSE;
5645         case MONO_BREAK_POLICY_ON_DBG:
5646                 g_warning ("mdb no longer supported");
5647                 return FALSE;
5648         default:
5649                 g_warning ("Incorrect value returned from break policy callback");
5650                 return FALSE;
5651         }
5652 }
5653
5654 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5655 static MonoInst*
5656 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5657 {
5658         MonoInst *addr, *store, *load;
5659         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5660
5661         /* the bounds check is already done by the callers */
5662         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5663         if (is_set) {
5664                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5665                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5666                 if (mini_type_is_reference (fsig->params [2]))
5667                         emit_write_barrier (cfg, addr, load);
5668         } else {
5669                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5670                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5671         }
5672         return store;
5673 }
5674
5675
5676 static gboolean
5677 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5678 {
5679         return mini_type_is_reference (&klass->byval_arg);
5680 }
5681
5682 static MonoInst*
5683 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5684 {
5685         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5686                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5687                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5688                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5689                 MonoInst *iargs [3];
5690
5691                 if (!helper->slot)
5692                         mono_class_setup_vtable (obj_array);
5693                 g_assert (helper->slot);
5694
5695                 if (sp [0]->type != STACK_OBJ)
5696                         return NULL;
5697                 if (sp [2]->type != STACK_OBJ)
5698                         return NULL;
5699
5700                 iargs [2] = sp [2];
5701                 iargs [1] = sp [1];
5702                 iargs [0] = sp [0];
5703
5704                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5705         } else {
5706                 MonoInst *ins;
5707
5708                 if (mini_is_gsharedvt_variable_klass (klass)) {
5709                         MonoInst *addr;
5710
5711                         // FIXME-VT: OP_ICONST optimization
5712                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5713                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5714                         ins->opcode = OP_STOREV_MEMBASE;
5715                 } else if (sp [1]->opcode == OP_ICONST) {
5716                         int array_reg = sp [0]->dreg;
5717                         int index_reg = sp [1]->dreg;
5718                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5719
5720                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5721                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5722
5723                         if (safety_checks)
5724                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5725                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5726                 } else {
5727                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5728                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5729                         if (generic_class_is_reference_type (cfg, klass))
5730                                 emit_write_barrier (cfg, addr, sp [2]);
5731                 }
5732                 return ins;
5733         }
5734 }
5735
5736 static MonoInst*
5737 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5738 {
5739         MonoClass *eklass;
5740
5741         if (is_set)
5742                 eklass = mono_class_from_mono_type (fsig->params [2]);
5743         else
5744                 eklass = mono_class_from_mono_type (fsig->ret);
5745
5746         if (is_set) {
5747                 return emit_array_store (cfg, eklass, args, FALSE);
5748         } else {
5749                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5750                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5751                 return ins;
5752         }
5753 }
5754
5755 static gboolean
5756 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5757 {
5758         uint32_t align;
5759         int param_size, return_size;
5760
5761         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5762         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5763
5764         if (cfg->verbose_level > 3)
5765                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5766
5767         //Don't allow mixing reference types with value types
5768         if (param_klass->valuetype != return_klass->valuetype) {
5769                 if (cfg->verbose_level > 3)
5770                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5771                 return FALSE;
5772         }
5773
5774         if (!param_klass->valuetype) {
5775                 if (cfg->verbose_level > 3)
5776                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5777                 return TRUE;
5778         }
5779
5780         //That are blitable
5781         if (param_klass->has_references || return_klass->has_references)
5782                 return FALSE;
5783
5784         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5785         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5786                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5787                         if (cfg->verbose_level > 3)
5788                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5789                 return FALSE;
5790         }
5791
5792         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5793                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5794                 if (cfg->verbose_level > 3)
5795                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5796                 return FALSE;
5797         }
5798
5799         param_size = mono_class_value_size (param_klass, &align);
5800         return_size = mono_class_value_size (return_klass, &align);
5801
5802         //We can do it if sizes match
5803         if (param_size == return_size) {
5804                 if (cfg->verbose_level > 3)
5805                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5806                 return TRUE;
5807         }
5808
5809         //No simple way to handle struct if sizes don't match
5810         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5811                 if (cfg->verbose_level > 3)
5812                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5813                 return FALSE;
5814         }
5815
5816         /*
5817          * Same reg size category.
5818          * A quick note on why we don't require widening here.
5819          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5820          *
5821          * Since the source value comes from a function argument, the JIT will already have
5822          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5823          */
5824         if (param_size <= 4 && return_size <= 4) {
5825                 if (cfg->verbose_level > 3)
5826                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5827                 return TRUE;
5828         }
5829
5830         return FALSE;
5831 }
5832
5833 static MonoInst*
5834 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5835 {
5836         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5837         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5838
5839         if (mini_is_gsharedvt_variable_type (fsig->ret))
5840                 return NULL;
5841
5842         //Valuetypes that are semantically equivalent or numbers than can be widened to
5843         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5844                 return args [0];
5845
5846         //Arrays of valuetypes that are semantically equivalent
5847         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5848                 return args [0];
5849
5850         return NULL;
5851 }
5852
5853 static MonoInst*
5854 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5855 {
5856 #ifdef MONO_ARCH_SIMD_INTRINSICS
5857         MonoInst *ins = NULL;
5858
5859         if (cfg->opt & MONO_OPT_SIMD) {
5860                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5861                 if (ins)
5862                         return ins;
5863         }
5864 #endif
5865
5866         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5867 }
5868
5869 static MonoInst*
5870 emit_memory_barrier (MonoCompile *cfg, int kind)
5871 {
5872         MonoInst *ins = NULL;
5873         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5874         MONO_ADD_INS (cfg->cbb, ins);
5875         ins->backend.memory_barrier_kind = kind;
5876
5877         return ins;
5878 }
5879
5880 static MonoInst*
5881 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5882 {
5883         MonoInst *ins = NULL;
5884         int opcode = 0;
5885
5886         /* The LLVM backend supports these intrinsics */
5887         if (cmethod->klass == mono_defaults.math_class) {
5888                 if (strcmp (cmethod->name, "Sin") == 0) {
5889                         opcode = OP_SIN;
5890                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5891                         opcode = OP_COS;
5892                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5893                         opcode = OP_SQRT;
5894                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5895                         opcode = OP_ABS;
5896                 }
5897
5898                 if (opcode && fsig->param_count == 1) {
5899                         MONO_INST_NEW (cfg, ins, opcode);
5900                         ins->type = STACK_R8;
5901                         ins->dreg = mono_alloc_freg (cfg);
5902                         ins->sreg1 = args [0]->dreg;
5903                         MONO_ADD_INS (cfg->cbb, ins);
5904                 }
5905
5906                 opcode = 0;
5907                 if (cfg->opt & MONO_OPT_CMOV) {
5908                         if (strcmp (cmethod->name, "Min") == 0) {
5909                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5910                                         opcode = OP_IMIN;
5911                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5912                                         opcode = OP_IMIN_UN;
5913                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5914                                         opcode = OP_LMIN;
5915                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5916                                         opcode = OP_LMIN_UN;
5917                         } else if (strcmp (cmethod->name, "Max") == 0) {
5918                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5919                                         opcode = OP_IMAX;
5920                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5921                                         opcode = OP_IMAX_UN;
5922                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5923                                         opcode = OP_LMAX;
5924                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5925                                         opcode = OP_LMAX_UN;
5926                         }
5927                 }
5928
5929                 if (opcode && fsig->param_count == 2) {
5930                         MONO_INST_NEW (cfg, ins, opcode);
5931                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5932                         ins->dreg = mono_alloc_ireg (cfg);
5933                         ins->sreg1 = args [0]->dreg;
5934                         ins->sreg2 = args [1]->dreg;
5935                         MONO_ADD_INS (cfg->cbb, ins);
5936                 }
5937         }
5938
5939         return ins;
5940 }
5941
5942 static MonoInst*
5943 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5944 {
5945         if (cmethod->klass == mono_defaults.array_class) {
5946                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5947                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5948                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5949                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5950                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5951                         return emit_array_unsafe_mov (cfg, fsig, args);
5952         }
5953
5954         return NULL;
5955 }
5956
5957 static MonoInst*
5958 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5959 {
5960         MonoInst *ins = NULL;
5961
5962          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5963
5964         if (cmethod->klass == mono_defaults.string_class) {
5965                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5966                         int dreg = alloc_ireg (cfg);
5967                         int index_reg = alloc_preg (cfg);
5968                         int add_reg = alloc_preg (cfg);
5969
5970 #if SIZEOF_REGISTER == 8
5971                         if (COMPILE_LLVM (cfg)) {
5972                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5973                         } else {
5974                                 /* The array reg is 64 bits but the index reg is only 32 */
5975                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5976                         }
5977 #else
5978                         index_reg = args [1]->dreg;
5979 #endif
5980                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5981
5982 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5983                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5984                         add_reg = ins->dreg;
5985                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5986                                                                    add_reg, 0);
5987 #else
5988                         int mult_reg = alloc_preg (cfg);
5989                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5990                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5991                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5992                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5993 #endif
5994                         type_from_op (cfg, ins, NULL, NULL);
5995                         return ins;
5996                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5997                         int dreg = alloc_ireg (cfg);
5998                         /* Decompose later to allow more optimizations */
5999                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6000                         ins->type = STACK_I4;
6001                         ins->flags |= MONO_INST_FAULT;
6002                         cfg->cbb->has_array_access = TRUE;
6003                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6004
6005                         return ins;
6006                 } else
6007                         return NULL;
6008         } else if (cmethod->klass == mono_defaults.object_class) {
6009                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6010                         int dreg = alloc_ireg_ref (cfg);
6011                         int vt_reg = alloc_preg (cfg);
6012                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6013                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6014                         type_from_op (cfg, ins, NULL, NULL);
6015
6016                         return ins;
6017                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6018                         int dreg = alloc_ireg (cfg);
6019                         int t1 = alloc_ireg (cfg);
6020
6021                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6022                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6023                         ins->type = STACK_I4;
6024
6025                         return ins;
6026                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6027                         MONO_INST_NEW (cfg, ins, OP_NOP);
6028                         MONO_ADD_INS (cfg->cbb, ins);
6029                         return ins;
6030                 } else
6031                         return NULL;
6032         } else if (cmethod->klass == mono_defaults.array_class) {
6033                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6034                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6035                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6036                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6037
6038 #ifndef MONO_BIG_ARRAYS
6039                 /*
6040                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6041                  * Array methods.
6042                  */
6043                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6044                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6045                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6046                         int dreg = alloc_ireg (cfg);
6047                         int bounds_reg = alloc_ireg_mp (cfg);
6048                         MonoBasicBlock *end_bb, *szarray_bb;
6049                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6050
6051                         NEW_BBLOCK (cfg, end_bb);
6052                         NEW_BBLOCK (cfg, szarray_bb);
6053
6054                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6055                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6056                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6057                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6058                         /* Non-szarray case */
6059                         if (get_length)
6060                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6061                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6062                         else
6063                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6064                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6065                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6066                         MONO_START_BB (cfg, szarray_bb);
6067                         /* Szarray case */
6068                         if (get_length)
6069                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6070                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6071                         else
6072                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6073                         MONO_START_BB (cfg, end_bb);
6074
6075                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6076                         ins->type = STACK_I4;
6077
6078                         return ins;
6079                 }
6080 #endif
6081
6082                 if (cmethod->name [0] != 'g')
6083                         return NULL;
6084
6085                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6086                         int dreg = alloc_ireg (cfg);
6087                         int vtable_reg = alloc_preg (cfg);
6088                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6089                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6090                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6091                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6092                         type_from_op (cfg, ins, NULL, NULL);
6093
6094                         return ins;
6095                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6096                         int dreg = alloc_ireg (cfg);
6097
6098                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6099                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6100                         type_from_op (cfg, ins, NULL, NULL);
6101
6102                         return ins;
6103                 } else
6104                         return NULL;
6105         } else if (cmethod->klass == runtime_helpers_class) {
6106                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6107                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6108                         return ins;
6109                 } else
6110                         return NULL;
6111         } else if (cmethod->klass == mono_defaults.monitor_class) {
6112                 gboolean is_enter = FALSE;
6113
6114                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6115                         is_enter = TRUE;
6116
6117                 if (is_enter) {
6118                         /*
6119                          * To make async stack traces work, icalls which can block should have a wrapper.
6120                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6121                          */
6122                         MonoBasicBlock *end_bb;
6123
6124                         NEW_BBLOCK (cfg, end_bb);
6125
6126                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6127                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6128                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6129                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6130                         MONO_START_BB (cfg, end_bb);
6131                         return ins;
6132                 }
6133         } else if (cmethod->klass == mono_defaults.thread_class) {
6134                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6135                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6136                         MONO_ADD_INS (cfg->cbb, ins);
6137                         return ins;
6138                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6139                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6140                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6141                         guint32 opcode = 0;
6142                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6143
6144                         if (fsig->params [0]->type == MONO_TYPE_I1)
6145                                 opcode = OP_LOADI1_MEMBASE;
6146                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6147                                 opcode = OP_LOADU1_MEMBASE;
6148                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6149                                 opcode = OP_LOADI2_MEMBASE;
6150                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6151                                 opcode = OP_LOADU2_MEMBASE;
6152                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6153                                 opcode = OP_LOADI4_MEMBASE;
6154                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6155                                 opcode = OP_LOADU4_MEMBASE;
6156                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6157                                 opcode = OP_LOADI8_MEMBASE;
6158                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6159                                 opcode = OP_LOADR4_MEMBASE;
6160                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6161                                 opcode = OP_LOADR8_MEMBASE;
6162                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6163                                 opcode = OP_LOAD_MEMBASE;
6164
6165                         if (opcode) {
6166                                 MONO_INST_NEW (cfg, ins, opcode);
6167                                 ins->inst_basereg = args [0]->dreg;
6168                                 ins->inst_offset = 0;
6169                                 MONO_ADD_INS (cfg->cbb, ins);
6170
6171                                 switch (fsig->params [0]->type) {
6172                                 case MONO_TYPE_I1:
6173                                 case MONO_TYPE_U1:
6174                                 case MONO_TYPE_I2:
6175                                 case MONO_TYPE_U2:
6176                                 case MONO_TYPE_I4:
6177                                 case MONO_TYPE_U4:
6178                                         ins->dreg = mono_alloc_ireg (cfg);
6179                                         ins->type = STACK_I4;
6180                                         break;
6181                                 case MONO_TYPE_I8:
6182                                 case MONO_TYPE_U8:
6183                                         ins->dreg = mono_alloc_lreg (cfg);
6184                                         ins->type = STACK_I8;
6185                                         break;
6186                                 case MONO_TYPE_I:
6187                                 case MONO_TYPE_U:
6188                                         ins->dreg = mono_alloc_ireg (cfg);
6189 #if SIZEOF_REGISTER == 8
6190                                         ins->type = STACK_I8;
6191 #else
6192                                         ins->type = STACK_I4;
6193 #endif
6194                                         break;
6195                                 case MONO_TYPE_R4:
6196                                 case MONO_TYPE_R8:
6197                                         ins->dreg = mono_alloc_freg (cfg);
6198                                         ins->type = STACK_R8;
6199                                         break;
6200                                 default:
6201                                         g_assert (mini_type_is_reference (fsig->params [0]));
6202                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6203                                         ins->type = STACK_OBJ;
6204                                         break;
6205                                 }
6206
6207                                 if (opcode == OP_LOADI8_MEMBASE)
6208                                         ins = mono_decompose_opcode (cfg, ins);
6209
6210                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6211
6212                                 return ins;
6213                         }
6214                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6215                         guint32 opcode = 0;
6216                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6217
6218                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6219                                 opcode = OP_STOREI1_MEMBASE_REG;
6220                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6221                                 opcode = OP_STOREI2_MEMBASE_REG;
6222                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6223                                 opcode = OP_STOREI4_MEMBASE_REG;
6224                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6225                                 opcode = OP_STOREI8_MEMBASE_REG;
6226                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6227                                 opcode = OP_STORER4_MEMBASE_REG;
6228                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6229                                 opcode = OP_STORER8_MEMBASE_REG;
6230                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6231                                 opcode = OP_STORE_MEMBASE_REG;
6232
6233                         if (opcode) {
6234                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6235
6236                                 MONO_INST_NEW (cfg, ins, opcode);
6237                                 ins->sreg1 = args [1]->dreg;
6238                                 ins->inst_destbasereg = args [0]->dreg;
6239                                 ins->inst_offset = 0;
6240                                 MONO_ADD_INS (cfg->cbb, ins);
6241
6242                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6243                                         ins = mono_decompose_opcode (cfg, ins);
6244
6245                                 return ins;
6246                         }
6247                 }
6248         } else if (cmethod->klass->image == mono_defaults.corlib &&
6249                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6250                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6251                 ins = NULL;
6252
6253 #if SIZEOF_REGISTER == 8
6254                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6255                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6256                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6257                                 ins->dreg = mono_alloc_preg (cfg);
6258                                 ins->sreg1 = args [0]->dreg;
6259                                 ins->type = STACK_I8;
6260                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6261                                 MONO_ADD_INS (cfg->cbb, ins);
6262                         } else {
6263                                 MonoInst *load_ins;
6264
6265                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6266
6267                                 /* 64 bit reads are already atomic */
6268                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6269                                 load_ins->dreg = mono_alloc_preg (cfg);
6270                                 load_ins->inst_basereg = args [0]->dreg;
6271                                 load_ins->inst_offset = 0;
6272                                 load_ins->type = STACK_I8;
6273                                 MONO_ADD_INS (cfg->cbb, load_ins);
6274
6275                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6276
6277                                 ins = load_ins;
6278                         }
6279                 }
6280 #endif
6281
6282                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6283                         MonoInst *ins_iconst;
6284                         guint32 opcode = 0;
6285
6286                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6287                                 opcode = OP_ATOMIC_ADD_I4;
6288                                 cfg->has_atomic_add_i4 = TRUE;
6289                         }
6290 #if SIZEOF_REGISTER == 8
6291                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6292                                 opcode = OP_ATOMIC_ADD_I8;
6293 #endif
6294                         if (opcode) {
6295                                 if (!mono_arch_opcode_supported (opcode))
6296                                         return NULL;
6297                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6298                                 ins_iconst->inst_c0 = 1;
6299                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6300                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6301
6302                                 MONO_INST_NEW (cfg, ins, opcode);
6303                                 ins->dreg = mono_alloc_ireg (cfg);
6304                                 ins->inst_basereg = args [0]->dreg;
6305                                 ins->inst_offset = 0;
6306                                 ins->sreg2 = ins_iconst->dreg;
6307                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6308                                 MONO_ADD_INS (cfg->cbb, ins);
6309                         }
6310                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6311                         MonoInst *ins_iconst;
6312                         guint32 opcode = 0;
6313
6314                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6315                                 opcode = OP_ATOMIC_ADD_I4;
6316                                 cfg->has_atomic_add_i4 = TRUE;
6317                         }
6318 #if SIZEOF_REGISTER == 8
6319                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6320                                 opcode = OP_ATOMIC_ADD_I8;
6321 #endif
6322                         if (opcode) {
6323                                 if (!mono_arch_opcode_supported (opcode))
6324                                         return NULL;
6325                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6326                                 ins_iconst->inst_c0 = -1;
6327                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6328                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6329
6330                                 MONO_INST_NEW (cfg, ins, opcode);
6331                                 ins->dreg = mono_alloc_ireg (cfg);
6332                                 ins->inst_basereg = args [0]->dreg;
6333                                 ins->inst_offset = 0;
6334                                 ins->sreg2 = ins_iconst->dreg;
6335                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6336                                 MONO_ADD_INS (cfg->cbb, ins);
6337                         }
6338                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6339                         guint32 opcode = 0;
6340
6341                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6342                                 opcode = OP_ATOMIC_ADD_I4;
6343                                 cfg->has_atomic_add_i4 = TRUE;
6344                         }
6345 #if SIZEOF_REGISTER == 8
6346                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6347                                 opcode = OP_ATOMIC_ADD_I8;
6348 #endif
6349                         if (opcode) {
6350                                 if (!mono_arch_opcode_supported (opcode))
6351                                         return NULL;
6352                                 MONO_INST_NEW (cfg, ins, opcode);
6353                                 ins->dreg = mono_alloc_ireg (cfg);
6354                                 ins->inst_basereg = args [0]->dreg;
6355                                 ins->inst_offset = 0;
6356                                 ins->sreg2 = args [1]->dreg;
6357                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6358                                 MONO_ADD_INS (cfg->cbb, ins);
6359                         }
6360                 }
6361                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6362                         MonoInst *f2i = NULL, *i2f;
6363                         guint32 opcode, f2i_opcode, i2f_opcode;
6364                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6365                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6366
6367                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6368                             fsig->params [0]->type == MONO_TYPE_R4) {
6369                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6370                                 f2i_opcode = OP_MOVE_F_TO_I4;
6371                                 i2f_opcode = OP_MOVE_I4_TO_F;
6372                                 cfg->has_atomic_exchange_i4 = TRUE;
6373                         }
6374 #if SIZEOF_REGISTER == 8
6375                         else if (is_ref ||
6376                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6377                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6378                                  fsig->params [0]->type == MONO_TYPE_I) {
6379                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6380                                 f2i_opcode = OP_MOVE_F_TO_I8;
6381                                 i2f_opcode = OP_MOVE_I8_TO_F;
6382                         }
6383 #else
6384                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6385                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6386                                 cfg->has_atomic_exchange_i4 = TRUE;
6387                         }
6388 #endif
6389                         else
6390                                 return NULL;
6391
6392                         if (!mono_arch_opcode_supported (opcode))
6393                                 return NULL;
6394
6395                         if (is_float) {
6396                                 /* TODO: Decompose these opcodes instead of bailing here. */
6397                                 if (COMPILE_SOFT_FLOAT (cfg))
6398                                         return NULL;
6399
6400                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6401                                 f2i->dreg = mono_alloc_ireg (cfg);
6402                                 f2i->sreg1 = args [1]->dreg;
6403                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6404                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6405                                 MONO_ADD_INS (cfg->cbb, f2i);
6406                         }
6407
6408                         MONO_INST_NEW (cfg, ins, opcode);
6409                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6410                         ins->inst_basereg = args [0]->dreg;
6411                         ins->inst_offset = 0;
6412                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6413                         MONO_ADD_INS (cfg->cbb, ins);
6414
6415                         switch (fsig->params [0]->type) {
6416                         case MONO_TYPE_I4:
6417                                 ins->type = STACK_I4;
6418                                 break;
6419                         case MONO_TYPE_I8:
6420                                 ins->type = STACK_I8;
6421                                 break;
6422                         case MONO_TYPE_I:
6423 #if SIZEOF_REGISTER == 8
6424                                 ins->type = STACK_I8;
6425 #else
6426                                 ins->type = STACK_I4;
6427 #endif
6428                                 break;
6429                         case MONO_TYPE_R4:
6430                         case MONO_TYPE_R8:
6431                                 ins->type = STACK_R8;
6432                                 break;
6433                         default:
6434                                 g_assert (mini_type_is_reference (fsig->params [0]));
6435                                 ins->type = STACK_OBJ;
6436                                 break;
6437                         }
6438
6439                         if (is_float) {
6440                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6441                                 i2f->dreg = mono_alloc_freg (cfg);
6442                                 i2f->sreg1 = ins->dreg;
6443                                 i2f->type = STACK_R8;
6444                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6445                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6446                                 MONO_ADD_INS (cfg->cbb, i2f);
6447
6448                                 ins = i2f;
6449                         }
6450
6451                         if (cfg->gen_write_barriers && is_ref)
6452                                 emit_write_barrier (cfg, args [0], args [1]);
6453                 }
6454                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6455                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6456                         guint32 opcode, f2i_opcode, i2f_opcode;
6457                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6458                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6459
6460                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6461                             fsig->params [1]->type == MONO_TYPE_R4) {
6462                                 opcode = OP_ATOMIC_CAS_I4;
6463                                 f2i_opcode = OP_MOVE_F_TO_I4;
6464                                 i2f_opcode = OP_MOVE_I4_TO_F;
6465                                 cfg->has_atomic_cas_i4 = TRUE;
6466                         }
6467 #if SIZEOF_REGISTER == 8
6468                         else if (is_ref ||
6469                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6470                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6471                                  fsig->params [1]->type == MONO_TYPE_I) {
6472                                 opcode = OP_ATOMIC_CAS_I8;
6473                                 f2i_opcode = OP_MOVE_F_TO_I8;
6474                                 i2f_opcode = OP_MOVE_I8_TO_F;
6475                         }
6476 #else
6477                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6478                                 opcode = OP_ATOMIC_CAS_I4;
6479                                 cfg->has_atomic_cas_i4 = TRUE;
6480                         }
6481 #endif
6482                         else
6483                                 return NULL;
6484
6485                         if (!mono_arch_opcode_supported (opcode))
6486                                 return NULL;
6487
6488                         if (is_float) {
6489                                 /* TODO: Decompose these opcodes instead of bailing here. */
6490                                 if (COMPILE_SOFT_FLOAT (cfg))
6491                                         return NULL;
6492
6493                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6494                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6495                                 f2i_new->sreg1 = args [1]->dreg;
6496                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6497                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6498                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6499
6500                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6501                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6502                                 f2i_cmp->sreg1 = args [2]->dreg;
6503                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6504                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6505                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6506                         }
6507
6508                         MONO_INST_NEW (cfg, ins, opcode);
6509                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6510                         ins->sreg1 = args [0]->dreg;
6511                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6512                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6513                         MONO_ADD_INS (cfg->cbb, ins);
6514
6515                         switch (fsig->params [1]->type) {
6516                         case MONO_TYPE_I4:
6517                                 ins->type = STACK_I4;
6518                                 break;
6519                         case MONO_TYPE_I8:
6520                                 ins->type = STACK_I8;
6521                                 break;
6522                         case MONO_TYPE_I:
6523 #if SIZEOF_REGISTER == 8
6524                                 ins->type = STACK_I8;
6525 #else
6526                                 ins->type = STACK_I4;
6527 #endif
6528                                 break;
6529                         case MONO_TYPE_R4:
6530                                 ins->type = cfg->r4_stack_type;
6531                                 break;
6532                         case MONO_TYPE_R8:
6533                                 ins->type = STACK_R8;
6534                                 break;
6535                         default:
6536                                 g_assert (mini_type_is_reference (fsig->params [1]));
6537                                 ins->type = STACK_OBJ;
6538                                 break;
6539                         }
6540
6541                         if (is_float) {
6542                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6543                                 i2f->dreg = mono_alloc_freg (cfg);
6544                                 i2f->sreg1 = ins->dreg;
6545                                 i2f->type = STACK_R8;
6546                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6547                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6548                                 MONO_ADD_INS (cfg->cbb, i2f);
6549
6550                                 ins = i2f;
6551                         }
6552
6553                         if (cfg->gen_write_barriers && is_ref)
6554                                 emit_write_barrier (cfg, args [0], args [1]);
6555                 }
6556                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6557                          fsig->params [1]->type == MONO_TYPE_I4) {
6558                         MonoInst *cmp, *ceq;
6559
6560                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6561                                 return NULL;
6562
6563                         /* int32 r = CAS (location, value, comparand); */
6564                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6565                         ins->dreg = alloc_ireg (cfg);
6566                         ins->sreg1 = args [0]->dreg;
6567                         ins->sreg2 = args [1]->dreg;
6568                         ins->sreg3 = args [2]->dreg;
6569                         ins->type = STACK_I4;
6570                         MONO_ADD_INS (cfg->cbb, ins);
6571
6572                         /* bool result = r == comparand; */
6573                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6574                         cmp->sreg1 = ins->dreg;
6575                         cmp->sreg2 = args [2]->dreg;
6576                         cmp->type = STACK_I4;
6577                         MONO_ADD_INS (cfg->cbb, cmp);
6578
6579                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6580                         ceq->dreg = alloc_ireg (cfg);
6581                         ceq->type = STACK_I4;
6582                         MONO_ADD_INS (cfg->cbb, ceq);
6583
6584                         /* *success = result; */
6585                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6586
6587                         cfg->has_atomic_cas_i4 = TRUE;
6588                 }
6589                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6590                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6591
6592                 if (ins)
6593                         return ins;
6594         } else if (cmethod->klass->image == mono_defaults.corlib &&
6595                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6596                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6597                 ins = NULL;
6598
6599                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6600                         guint32 opcode = 0;
6601                         MonoType *t = fsig->params [0];
6602                         gboolean is_ref;
6603                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6604
6605                         g_assert (t->byref);
6606                         /* t is a byref type, so the reference check is more complicated */
6607                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6608                         if (t->type == MONO_TYPE_I1)
6609                                 opcode = OP_ATOMIC_LOAD_I1;
6610                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6611                                 opcode = OP_ATOMIC_LOAD_U1;
6612                         else if (t->type == MONO_TYPE_I2)
6613                                 opcode = OP_ATOMIC_LOAD_I2;
6614                         else if (t->type == MONO_TYPE_U2)
6615                                 opcode = OP_ATOMIC_LOAD_U2;
6616                         else if (t->type == MONO_TYPE_I4)
6617                                 opcode = OP_ATOMIC_LOAD_I4;
6618                         else if (t->type == MONO_TYPE_U4)
6619                                 opcode = OP_ATOMIC_LOAD_U4;
6620                         else if (t->type == MONO_TYPE_R4)
6621                                 opcode = OP_ATOMIC_LOAD_R4;
6622                         else if (t->type == MONO_TYPE_R8)
6623                                 opcode = OP_ATOMIC_LOAD_R8;
6624 #if SIZEOF_REGISTER == 8
6625                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6626                                 opcode = OP_ATOMIC_LOAD_I8;
6627                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6628                                 opcode = OP_ATOMIC_LOAD_U8;
6629 #else
6630                         else if (t->type == MONO_TYPE_I)
6631                                 opcode = OP_ATOMIC_LOAD_I4;
6632                         else if (is_ref || t->type == MONO_TYPE_U)
6633                                 opcode = OP_ATOMIC_LOAD_U4;
6634 #endif
6635
6636                         if (opcode) {
6637                                 if (!mono_arch_opcode_supported (opcode))
6638                                         return NULL;
6639
6640                                 MONO_INST_NEW (cfg, ins, opcode);
6641                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6642                                 ins->sreg1 = args [0]->dreg;
6643                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6644                                 MONO_ADD_INS (cfg->cbb, ins);
6645
6646                                 switch (t->type) {
6647                                 case MONO_TYPE_BOOLEAN:
6648                                 case MONO_TYPE_I1:
6649                                 case MONO_TYPE_U1:
6650                                 case MONO_TYPE_I2:
6651                                 case MONO_TYPE_U2:
6652                                 case MONO_TYPE_I4:
6653                                 case MONO_TYPE_U4:
6654                                         ins->type = STACK_I4;
6655                                         break;
6656                                 case MONO_TYPE_I8:
6657                                 case MONO_TYPE_U8:
6658                                         ins->type = STACK_I8;
6659                                         break;
6660                                 case MONO_TYPE_I:
6661                                 case MONO_TYPE_U:
6662 #if SIZEOF_REGISTER == 8
6663                                         ins->type = STACK_I8;
6664 #else
6665                                         ins->type = STACK_I4;
6666 #endif
6667                                         break;
6668                                 case MONO_TYPE_R4:
6669                                         ins->type = cfg->r4_stack_type;
6670                                         break;
6671                                 case MONO_TYPE_R8:
6672                                         ins->type = STACK_R8;
6673                                         break;
6674                                 default:
6675                                         g_assert (is_ref);
6676                                         ins->type = STACK_OBJ;
6677                                         break;
6678                                 }
6679                         }
6680                 }
6681
6682                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6683                         guint32 opcode = 0;
6684                         MonoType *t = fsig->params [0];
6685                         gboolean is_ref;
6686
6687                         g_assert (t->byref);
6688                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6689                         if (t->type == MONO_TYPE_I1)
6690                                 opcode = OP_ATOMIC_STORE_I1;
6691                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6692                                 opcode = OP_ATOMIC_STORE_U1;
6693                         else if (t->type == MONO_TYPE_I2)
6694                                 opcode = OP_ATOMIC_STORE_I2;
6695                         else if (t->type == MONO_TYPE_U2)
6696                                 opcode = OP_ATOMIC_STORE_U2;
6697                         else if (t->type == MONO_TYPE_I4)
6698                                 opcode = OP_ATOMIC_STORE_I4;
6699                         else if (t->type == MONO_TYPE_U4)
6700                                 opcode = OP_ATOMIC_STORE_U4;
6701                         else if (t->type == MONO_TYPE_R4)
6702                                 opcode = OP_ATOMIC_STORE_R4;
6703                         else if (t->type == MONO_TYPE_R8)
6704                                 opcode = OP_ATOMIC_STORE_R8;
6705 #if SIZEOF_REGISTER == 8
6706                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6707                                 opcode = OP_ATOMIC_STORE_I8;
6708                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6709                                 opcode = OP_ATOMIC_STORE_U8;
6710 #else
6711                         else if (t->type == MONO_TYPE_I)
6712                                 opcode = OP_ATOMIC_STORE_I4;
6713                         else if (is_ref || t->type == MONO_TYPE_U)
6714                                 opcode = OP_ATOMIC_STORE_U4;
6715 #endif
6716
6717                         if (opcode) {
6718                                 if (!mono_arch_opcode_supported (opcode))
6719                                         return NULL;
6720
6721                                 MONO_INST_NEW (cfg, ins, opcode);
6722                                 ins->dreg = args [0]->dreg;
6723                                 ins->sreg1 = args [1]->dreg;
6724                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6725                                 MONO_ADD_INS (cfg->cbb, ins);
6726
6727                                 if (cfg->gen_write_barriers && is_ref)
6728                                         emit_write_barrier (cfg, args [0], args [1]);
6729                         }
6730                 }
6731
6732                 if (ins)
6733                         return ins;
6734         } else if (cmethod->klass->image == mono_defaults.corlib &&
6735                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6736                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6737                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6738                         if (should_insert_brekpoint (cfg->method)) {
6739                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6740                         } else {
6741                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6742                                 MONO_ADD_INS (cfg->cbb, ins);
6743                         }
6744                         return ins;
6745                 }
6746         } else if (cmethod->klass->image == mono_defaults.corlib &&
6747                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6748                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6749                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6750 #ifdef TARGET_WIN32
6751                         EMIT_NEW_ICONST (cfg, ins, 1);
6752 #else
6753                         EMIT_NEW_ICONST (cfg, ins, 0);
6754 #endif
6755                 }
6756         } else if (cmethod->klass->image == mono_defaults.corlib &&
6757                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6758                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6759                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6760                         /* No stack walks are currently available, so implement this as an intrinsic */
6761                         MonoInst *assembly_ins;
6762
6763                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6764                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6765                         return ins;
6766                 }
6767         } else if (cmethod->klass->image == mono_defaults.corlib &&
6768                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6769                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6770                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6771                         /* No stack walks are currently available, so implement this as an intrinsic */
6772                         MonoInst *method_ins;
6773                         MonoMethod *declaring = cfg->method;
6774
6775                         /* This returns the declaring generic method */
6776                         if (declaring->is_inflated)
6777                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6778                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6779                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6780                         cfg->no_inline = TRUE;
6781                         if (cfg->method != cfg->current_method)
6782                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6783                         return ins;
6784                 }
6785         } else if (cmethod->klass == mono_defaults.math_class) {
6786                 /*
6787                  * There is general branchless code for Min/Max, but it does not work for
6788                  * all inputs:
6789                  * http://everything2.com/?node_id=1051618
6790                  */
6791         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6792                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6793                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6794                                 !strcmp (cmethod->klass->name, "Selector")) ||
6795                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6796                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6797                                 !strcmp (cmethod->klass->name, "Selector"))
6798                            ) {
6799                 if (cfg->backend->have_objc_get_selector &&
6800                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6801                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6802                     cfg->compile_aot && !cfg->llvm_only) {
6803                         MonoInst *pi;
6804                         MonoJumpInfoToken *ji;
6805                         MonoString *s;
6806
6807                         // FIXME: llvmonly
6808
6809                         cfg->exception_message = g_strdup ("GetHandle");
6810                         cfg->disable_llvm = TRUE;
6811
6812                         if (args [0]->opcode == OP_GOT_ENTRY) {
6813                                 pi = (MonoInst *)args [0]->inst_p1;
6814                                 g_assert (pi->opcode == OP_PATCH_INFO);
6815                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6816                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6817                         } else {
6818                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6819                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6820                         }
6821
6822                         NULLIFY_INS (args [0]);
6823
6824                         // FIXME: Ugly
6825                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6826                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6827                         ins->dreg = mono_alloc_ireg (cfg);
6828                         // FIXME: Leaks
6829                         ins->inst_p0 = mono_string_to_utf8 (s);
6830                         MONO_ADD_INS (cfg->cbb, ins);
6831                         return ins;
6832                 }
6833         }
6834
6835 #ifdef MONO_ARCH_SIMD_INTRINSICS
6836         if (cfg->opt & MONO_OPT_SIMD) {
6837                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6838                 if (ins)
6839                         return ins;
6840         }
6841 #endif
6842
6843         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6844         if (ins)
6845                 return ins;
6846
6847         if (COMPILE_LLVM (cfg)) {
6848                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6849                 if (ins)
6850                         return ins;
6851         }
6852
6853         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6854 }
6855
6856 /*
6857  * This entry point could be used later for arbitrary method
6858  * redirection.
6859  */
6860 inline static MonoInst*
6861 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6862                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6863 {
6864         if (method->klass == mono_defaults.string_class) {
6865                 /* managed string allocation support */
6866                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6867                         MonoInst *iargs [2];
6868                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6869                         MonoMethod *managed_alloc = NULL;
6870
6871                         g_assert (vtable); /*Should not fail since it System.String*/
6872 #ifndef MONO_CROSS_COMPILE
6873                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6874 #endif
6875                         if (!managed_alloc)
6876                                 return NULL;
6877                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6878                         iargs [1] = args [0];
6879                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6880                 }
6881         }
6882         return NULL;
6883 }
6884
6885 static void
6886 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6887 {
6888         MonoInst *store, *temp;
6889         int i;
6890
6891         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6892                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6893
6894                 /*
6895                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6896                  * would be different than the MonoInst's used to represent arguments, and
6897                  * the ldelema implementation can't deal with that.
6898                  * Solution: When ldelema is used on an inline argument, create a var for
6899                  * it, emit ldelema on that var, and emit the saving code below in
6900                  * inline_method () if needed.
6901                  */
6902                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6903                 cfg->args [i] = temp;
6904                 /* This uses cfg->args [i] which is set by the preceeding line */
6905                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6906                 store->cil_code = sp [0]->cil_code;
6907                 sp++;
6908         }
6909 }
6910
6911 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6912 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6913
6914 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6915 static gboolean
6916 check_inline_called_method_name_limit (MonoMethod *called_method)
6917 {
6918         int strncmp_result;
6919         static const char *limit = NULL;
6920
6921         if (limit == NULL) {
6922                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6923
6924                 if (limit_string != NULL)
6925                         limit = limit_string;
6926                 else
6927                         limit = "";
6928         }
6929
6930         if (limit [0] != '\0') {
6931                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6932
6933                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6934                 g_free (called_method_name);
6935
6936                 //return (strncmp_result <= 0);
6937                 return (strncmp_result == 0);
6938         } else {
6939                 return TRUE;
6940         }
6941 }
6942 #endif
6943
6944 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6945 static gboolean
6946 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6947 {
6948         int strncmp_result;
6949         static const char *limit = NULL;
6950
6951         if (limit == NULL) {
6952                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6953                 if (limit_string != NULL) {
6954                         limit = limit_string;
6955                 } else {
6956                         limit = "";
6957                 }
6958         }
6959
6960         if (limit [0] != '\0') {
6961                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6962
6963                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6964                 g_free (caller_method_name);
6965
6966                 //return (strncmp_result <= 0);
6967                 return (strncmp_result == 0);
6968         } else {
6969                 return TRUE;
6970         }
6971 }
6972 #endif
6973
6974 static void
6975 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6976 {
6977         static double r8_0 = 0.0;
6978         static float r4_0 = 0.0;
6979         MonoInst *ins;
6980         int t;
6981
6982         rtype = mini_get_underlying_type (rtype);
6983         t = rtype->type;
6984
6985         if (rtype->byref) {
6986                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6987         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6988                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6989         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6990                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6991         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6992                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6993                 ins->type = STACK_R4;
6994                 ins->inst_p0 = (void*)&r4_0;
6995                 ins->dreg = dreg;
6996                 MONO_ADD_INS (cfg->cbb, ins);
6997         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6998                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6999                 ins->type = STACK_R8;
7000                 ins->inst_p0 = (void*)&r8_0;
7001                 ins->dreg = dreg;
7002                 MONO_ADD_INS (cfg->cbb, ins);
7003         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7004                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7005                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7006         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7007                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7008         } else {
7009                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7010         }
7011 }
7012
7013 static void
7014 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7015 {
7016         int t;
7017
7018         rtype = mini_get_underlying_type (rtype);
7019         t = rtype->type;
7020
7021         if (rtype->byref) {
7022                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7023         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7024                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7025         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7026                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7027         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7029         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7030                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7031         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7032                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7034         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7035                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7036         } else {
7037                 emit_init_rvar (cfg, dreg, rtype);
7038         }
7039 }
7040
7041 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7042 static void
7043 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7044 {
7045         MonoInst *var = cfg->locals [local];
7046         if (COMPILE_SOFT_FLOAT (cfg)) {
7047                 MonoInst *store;
7048                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7049                 emit_init_rvar (cfg, reg, type);
7050                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7051         } else {
7052                 if (init)
7053                         emit_init_rvar (cfg, var->dreg, type);
7054                 else
7055                         emit_dummy_init_rvar (cfg, var->dreg, type);
7056         }
7057 }
7058
7059 /*
7060  * inline_method:
7061  *
7062  *   Return the cost of inlining CMETHOD.
7063  */
7064 static int
7065 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7066                            guchar *ip, guint real_offset, gboolean inline_always)
7067 {
7068         MonoError error;
7069         MonoInst *ins, *rvar = NULL;
7070         MonoMethodHeader *cheader;
7071         MonoBasicBlock *ebblock, *sbblock;
7072         int i, costs;
7073         MonoMethod *prev_inlined_method;
7074         MonoInst **prev_locals, **prev_args;
7075         MonoType **prev_arg_types;
7076         guint prev_real_offset;
7077         GHashTable *prev_cbb_hash;
7078         MonoBasicBlock **prev_cil_offset_to_bb;
7079         MonoBasicBlock *prev_cbb;
7080         unsigned char* prev_cil_start;
7081         guint32 prev_cil_offset_to_bb_len;
7082         MonoMethod *prev_current_method;
7083         MonoGenericContext *prev_generic_context;
7084         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7085
7086         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7087
7088 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7089         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7090                 return 0;
7091 #endif
7092 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7093         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7094                 return 0;
7095 #endif
7096
7097         if (!fsig)
7098                 fsig = mono_method_signature (cmethod);
7099
7100         if (cfg->verbose_level > 2)
7101                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7102
7103         if (!cmethod->inline_info) {
7104                 cfg->stat_inlineable_methods++;
7105                 cmethod->inline_info = 1;
7106         }
7107
7108         /* allocate local variables */
7109         cheader = mono_method_get_header_checked (cmethod, &error);
7110         if (!cheader) {
7111                 if (inline_always) {
7112                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7113                         mono_error_move (&cfg->error, &error);
7114                 } else {
7115                         mono_error_cleanup (&error);
7116                 }
7117                 return 0;
7118         }
7119
7120         /*Must verify before creating locals as it can cause the JIT to assert.*/
7121         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7122                 mono_metadata_free_mh (cheader);
7123                 return 0;
7124         }
7125
7126         /* allocate space to store the return value */
7127         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7128                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7129         }
7130
7131         prev_locals = cfg->locals;
7132         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7133         for (i = 0; i < cheader->num_locals; ++i)
7134                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7135
7136         /* allocate start and end blocks */
7137         /* This is needed so if the inline is aborted, we can clean up */
7138         NEW_BBLOCK (cfg, sbblock);
7139         sbblock->real_offset = real_offset;
7140
7141         NEW_BBLOCK (cfg, ebblock);
7142         ebblock->block_num = cfg->num_bblocks++;
7143         ebblock->real_offset = real_offset;
7144
7145         prev_args = cfg->args;
7146         prev_arg_types = cfg->arg_types;
7147         prev_inlined_method = cfg->inlined_method;
7148         cfg->inlined_method = cmethod;
7149         cfg->ret_var_set = FALSE;
7150         cfg->inline_depth ++;
7151         prev_real_offset = cfg->real_offset;
7152         prev_cbb_hash = cfg->cbb_hash;
7153         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7154         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7155         prev_cil_start = cfg->cil_start;
7156         prev_cbb = cfg->cbb;
7157         prev_current_method = cfg->current_method;
7158         prev_generic_context = cfg->generic_context;
7159         prev_ret_var_set = cfg->ret_var_set;
7160         prev_disable_inline = cfg->disable_inline;
7161
7162         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7163                 virtual_ = TRUE;
7164
7165         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7166
7167         ret_var_set = cfg->ret_var_set;
7168
7169         cfg->inlined_method = prev_inlined_method;
7170         cfg->real_offset = prev_real_offset;
7171         cfg->cbb_hash = prev_cbb_hash;
7172         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7173         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7174         cfg->cil_start = prev_cil_start;
7175         cfg->locals = prev_locals;
7176         cfg->args = prev_args;
7177         cfg->arg_types = prev_arg_types;
7178         cfg->current_method = prev_current_method;
7179         cfg->generic_context = prev_generic_context;
7180         cfg->ret_var_set = prev_ret_var_set;
7181         cfg->disable_inline = prev_disable_inline;
7182         cfg->inline_depth --;
7183
7184         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7185                 if (cfg->verbose_level > 2)
7186                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7187
7188                 cfg->stat_inlined_methods++;
7189
7190                 /* always add some code to avoid block split failures */
7191                 MONO_INST_NEW (cfg, ins, OP_NOP);
7192                 MONO_ADD_INS (prev_cbb, ins);
7193
7194                 prev_cbb->next_bb = sbblock;
7195                 link_bblock (cfg, prev_cbb, sbblock);
7196
7197                 /*
7198                  * Get rid of the begin and end bblocks if possible to aid local
7199                  * optimizations.
7200                  */
7201                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7202
7203                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7204                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7205
7206                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7207                         MonoBasicBlock *prev = ebblock->in_bb [0];
7208
7209                         if (prev->next_bb == ebblock) {
7210                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7211                                 cfg->cbb = prev;
7212                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7213                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7214                                         cfg->cbb = prev_cbb;
7215                                 }
7216                         } else {
7217                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7218                                 cfg->cbb = ebblock;
7219                         }
7220                 } else {
7221                         /*
7222                          * Its possible that the rvar is set in some prev bblock, but not in others.
7223                          * (#1835).
7224                          */
7225                         if (rvar) {
7226                                 MonoBasicBlock *bb;
7227
7228                                 for (i = 0; i < ebblock->in_count; ++i) {
7229                                         bb = ebblock->in_bb [i];
7230
7231                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7232                                                 cfg->cbb = bb;
7233
7234                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7235                                         }
7236                                 }
7237                         }
7238
7239                         cfg->cbb = ebblock;
7240                 }
7241
7242                 if (rvar) {
7243                         /*
7244                          * If the inlined method contains only a throw, then the ret var is not
7245                          * set, so set it to a dummy value.
7246                          */
7247                         if (!ret_var_set)
7248                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7249
7250                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7251                         *sp++ = ins;
7252                 }
7253                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7254                 return costs + 1;
7255         } else {
7256                 if (cfg->verbose_level > 2)
7257                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7258                 cfg->exception_type = MONO_EXCEPTION_NONE;
7259
7260                 /* This gets rid of the newly added bblocks */
7261                 cfg->cbb = prev_cbb;
7262         }
7263         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7264         return 0;
7265 }
7266
7267 /*
7268  * Some of these comments may well be out-of-date.
7269  * Design decisions: we do a single pass over the IL code (and we do bblock
7270  * splitting/merging in the few cases when it's required: a back jump to an IL
7271  * address that was not already seen as bblock starting point).
7272  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7273  * Complex operations are decomposed in simpler ones right away. We need to let the
7274  * arch-specific code peek and poke inside this process somehow (except when the
7275  * optimizations can take advantage of the full semantic info of coarse opcodes).
7276  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7277  * MonoInst->opcode initially is the IL opcode or some simplification of that
7278  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7279  * opcode with value bigger than OP_LAST.
7280  * At this point the IR can be handed over to an interpreter, a dumb code generator
7281  * or to the optimizing code generator that will translate it to SSA form.
7282  *
7283  * Profiling directed optimizations.
7284  * We may compile by default with few or no optimizations and instrument the code
7285  * or the user may indicate what methods to optimize the most either in a config file
7286  * or through repeated runs where the compiler applies offline the optimizations to
7287  * each method and then decides if it was worth it.
7288  */
7289
7290 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7291 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7292 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7293 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7294 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7295 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7296 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7297 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7298
7299 /* offset from br.s -> br like opcodes */
7300 #define BIG_BRANCH_OFFSET 13
7301
7302 static gboolean
7303 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7304 {
7305         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7306
7307         return b == NULL || b == bb;
7308 }
7309
7310 static int
7311 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7312 {
7313         unsigned char *ip = start;
7314         unsigned char *target;
7315         int i;
7316         guint cli_addr;
7317         MonoBasicBlock *bblock;
7318         const MonoOpcode *opcode;
7319
7320         while (ip < end) {
7321                 cli_addr = ip - start;
7322                 i = mono_opcode_value ((const guint8 **)&ip, end);
7323                 if (i < 0)
7324                         UNVERIFIED;
7325                 opcode = &mono_opcodes [i];
7326                 switch (opcode->argument) {
7327                 case MonoInlineNone:
7328                         ip++;
7329                         break;
7330                 case MonoInlineString:
7331                 case MonoInlineType:
7332                 case MonoInlineField:
7333                 case MonoInlineMethod:
7334                 case MonoInlineTok:
7335                 case MonoInlineSig:
7336                 case MonoShortInlineR:
7337                 case MonoInlineI:
7338                         ip += 5;
7339                         break;
7340                 case MonoInlineVar:
7341                         ip += 3;
7342                         break;
7343                 case MonoShortInlineVar:
7344                 case MonoShortInlineI:
7345                         ip += 2;
7346                         break;
7347                 case MonoShortInlineBrTarget:
7348                         target = start + cli_addr + 2 + (signed char)ip [1];
7349                         GET_BBLOCK (cfg, bblock, target);
7350                         ip += 2;
7351                         if (ip < end)
7352                                 GET_BBLOCK (cfg, bblock, ip);
7353                         break;
7354                 case MonoInlineBrTarget:
7355                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7356                         GET_BBLOCK (cfg, bblock, target);
7357                         ip += 5;
7358                         if (ip < end)
7359                                 GET_BBLOCK (cfg, bblock, ip);
7360                         break;
7361                 case MonoInlineSwitch: {
7362                         guint32 n = read32 (ip + 1);
7363                         guint32 j;
7364                         ip += 5;
7365                         cli_addr += 5 + 4 * n;
7366                         target = start + cli_addr;
7367                         GET_BBLOCK (cfg, bblock, target);
7368
7369                         for (j = 0; j < n; ++j) {
7370                                 target = start + cli_addr + (gint32)read32 (ip);
7371                                 GET_BBLOCK (cfg, bblock, target);
7372                                 ip += 4;
7373                         }
7374                         break;
7375                 }
7376                 case MonoInlineR:
7377                 case MonoInlineI8:
7378                         ip += 9;
7379                         break;
7380                 default:
7381                         g_assert_not_reached ();
7382                 }
7383
7384                 if (i == CEE_THROW) {
7385                         unsigned char *bb_start = ip - 1;
7386
7387                         /* Find the start of the bblock containing the throw */
7388                         bblock = NULL;
7389                         while ((bb_start >= start) && !bblock) {
7390                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7391                                 bb_start --;
7392                         }
7393                         if (bblock)
7394                                 bblock->out_of_line = 1;
7395                 }
7396         }
7397         return 0;
7398 unverified:
7399 exception_exit:
7400         *pos = ip;
7401         return 1;
7402 }
7403
7404 static inline MonoMethod *
7405 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7406 {
7407         MonoMethod *method;
7408
7409         mono_error_init (error);
7410
7411         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7412                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7413                 if (context) {
7414                         method = mono_class_inflate_generic_method_checked (method, context, error);
7415                 }
7416         } else {
7417                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7418         }
7419
7420         return method;
7421 }
7422
7423 static inline MonoMethod *
7424 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7425 {
7426         MonoError error;
7427         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7428
7429         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7430                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7431                 method = NULL;
7432         }
7433
7434         if (!method && !cfg)
7435                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7436
7437         return method;
7438 }
7439
7440 static inline MonoClass*
7441 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7442 {
7443         MonoError error;
7444         MonoClass *klass;
7445
7446         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7447                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7448                 if (context) {
7449                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7450                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7451                 }
7452         } else {
7453                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7454                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7455         }
7456         if (klass)
7457                 mono_class_init (klass);
7458         return klass;
7459 }
7460
7461 static inline MonoMethodSignature*
7462 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7463 {
7464         MonoMethodSignature *fsig;
7465
7466         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7467                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7468         } else {
7469                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7470         }
7471         if (context) {
7472                 MonoError error;
7473                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7474                 // FIXME:
7475                 g_assert(mono_error_ok(&error));
7476         }
7477         return fsig;
7478 }
7479
7480 static MonoMethod*
7481 throw_exception (void)
7482 {
7483         static MonoMethod *method = NULL;
7484
7485         if (!method) {
7486                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7487                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7488         }
7489         g_assert (method);
7490         return method;
7491 }
7492
7493 static void
7494 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7495 {
7496         MonoMethod *thrower = throw_exception ();
7497         MonoInst *args [1];
7498
7499         EMIT_NEW_PCONST (cfg, args [0], ex);
7500         mono_emit_method_call (cfg, thrower, args, NULL);
7501 }
7502
7503 /*
7504  * Return the original method is a wrapper is specified. We can only access
7505  * the custom attributes from the original method.
7506  */
7507 static MonoMethod*
7508 get_original_method (MonoMethod *method)
7509 {
7510         if (method->wrapper_type == MONO_WRAPPER_NONE)
7511                 return method;
7512
7513         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7514         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7515                 return NULL;
7516
7517         /* in other cases we need to find the original method */
7518         return mono_marshal_method_from_wrapper (method);
7519 }
7520
7521 static void
7522 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7523 {
7524         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7525         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7526         if (ex)
7527                 emit_throw_exception (cfg, ex);
7528 }
7529
7530 static void
7531 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7532 {
7533         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7534         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7535         if (ex)
7536                 emit_throw_exception (cfg, ex);
7537 }
7538
7539 /*
7540  * Check that the IL instructions at ip are the array initialization
7541  * sequence and return the pointer to the data and the size.
7542  */
7543 static const char*
7544 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7545 {
7546         /*
7547          * newarr[System.Int32]
7548          * dup
7549          * ldtoken field valuetype ...
7550          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7551          */
7552         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7553                 MonoError error;
7554                 guint32 token = read32 (ip + 7);
7555                 guint32 field_token = read32 (ip + 2);
7556                 guint32 field_index = field_token & 0xffffff;
7557                 guint32 rva;
7558                 const char *data_ptr;
7559                 int size = 0;
7560                 MonoMethod *cmethod;
7561                 MonoClass *dummy_class;
7562                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7563                 int dummy_align;
7564
7565                 if (!field) {
7566                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7567                         return NULL;
7568                 }
7569
7570                 *out_field_token = field_token;
7571
7572                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7573                 if (!cmethod)
7574                         return NULL;
7575                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7576                         return NULL;
7577                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7578                 case MONO_TYPE_BOOLEAN:
7579                 case MONO_TYPE_I1:
7580                 case MONO_TYPE_U1:
7581                         size = 1; break;
7582                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7583 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7584                 case MONO_TYPE_CHAR:
7585                 case MONO_TYPE_I2:
7586                 case MONO_TYPE_U2:
7587                         size = 2; break;
7588                 case MONO_TYPE_I4:
7589                 case MONO_TYPE_U4:
7590                 case MONO_TYPE_R4:
7591                         size = 4; break;
7592                 case MONO_TYPE_R8:
7593                 case MONO_TYPE_I8:
7594                 case MONO_TYPE_U8:
7595                         size = 8; break;
7596 #endif
7597                 default:
7598                         return NULL;
7599                 }
7600                 size *= len;
7601                 if (size > mono_type_size (field->type, &dummy_align))
7602                     return NULL;
7603                 *out_size = size;
7604                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7605                 if (!image_is_dynamic (method->klass->image)) {
7606                         field_index = read32 (ip + 2) & 0xffffff;
7607                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7608                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7609                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7610                         /* for aot code we do the lookup on load */
7611                         if (aot && data_ptr)
7612                                 return (const char *)GUINT_TO_POINTER (rva);
7613                 } else {
7614                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7615                         g_assert (!aot);
7616                         data_ptr = mono_field_get_data (field);
7617                 }
7618                 return data_ptr;
7619         }
7620         return NULL;
7621 }
7622
7623 static void
7624 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7625 {
7626         MonoError error;
7627         char *method_fname = mono_method_full_name (method, TRUE);
7628         char *method_code;
7629         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7630
7631         if (!header) {
7632                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7633                 mono_error_cleanup (&error);
7634         } else if (header->code_size == 0)
7635                 method_code = g_strdup ("method body is empty.");
7636         else
7637                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7638         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7639         g_free (method_fname);
7640         g_free (method_code);
7641         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7642 }
7643
7644 static void
7645 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7646 {
7647         MonoInst *ins;
7648         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7649         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7650                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7651                 /* Optimize reg-reg moves away */
7652                 /*
7653                  * Can't optimize other opcodes, since sp[0] might point to
7654                  * the last ins of a decomposed opcode.
7655                  */
7656                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7657         } else {
7658                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7659         }
7660 }
7661
7662 /*
7663  * ldloca inhibits many optimizations so try to get rid of it in common
7664  * cases.
7665  */
7666 static inline unsigned char *
7667 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7668 {
7669         int local, token;
7670         MonoClass *klass;
7671         MonoType *type;
7672
7673         if (size == 1) {
7674                 local = ip [1];
7675                 ip += 2;
7676         } else {
7677                 local = read16 (ip + 2);
7678                 ip += 4;
7679         }
7680
7681         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7682                 /* From the INITOBJ case */
7683                 token = read32 (ip + 2);
7684                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7685                 CHECK_TYPELOAD (klass);
7686                 type = mini_get_underlying_type (&klass->byval_arg);
7687                 emit_init_local (cfg, local, type, TRUE);
7688                 return ip + 6;
7689         }
7690  exception_exit:
7691         return NULL;
7692 }
7693
7694 static MonoInst*
7695 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7696 {
7697         MonoInst *icall_args [16];
7698         MonoInst *call_target, *ins, *vtable_ins;
7699         int arg_reg, this_reg, vtable_reg;
7700         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7701         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7702         gboolean variant_iface = FALSE;
7703         guint32 slot;
7704         int offset;
7705
7706         /*
7707          * In llvm-only mode, vtables contain function descriptors instead of
7708          * method addresses/trampolines.
7709          */
7710         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7711
7712         if (is_iface)
7713                 slot = mono_method_get_imt_slot (cmethod);
7714         else
7715                 slot = mono_method_get_vtable_index (cmethod);
7716
7717         this_reg = sp [0]->dreg;
7718
7719         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7720                 variant_iface = TRUE;
7721
7722         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7723                 /*
7724                  * The simplest case, a normal virtual call.
7725                  */
7726                 int slot_reg = alloc_preg (cfg);
7727                 int addr_reg = alloc_preg (cfg);
7728                 int arg_reg = alloc_preg (cfg);
7729                 MonoBasicBlock *non_null_bb;
7730
7731                 vtable_reg = alloc_preg (cfg);
7732                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7733                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7734
7735                 /* Load the vtable slot, which contains a function descriptor. */
7736                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7737
7738                 NEW_BBLOCK (cfg, non_null_bb);
7739
7740                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7741                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7742                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7743
7744                 /* Slow path */
7745                 // FIXME: Make the wrapper use the preserveall cconv
7746                 // FIXME: Use one icall per slot for small slot numbers ?
7747                 icall_args [0] = vtable_ins;
7748                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7749                 /* Make the icall return the vtable slot value to save some code space */
7750                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7751                 ins->dreg = slot_reg;
7752                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7753
7754                 /* Fastpath */
7755                 MONO_START_BB (cfg, non_null_bb);
7756                 /* Load the address + arg from the vtable slot */
7757                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7758                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7759
7760                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7761         }
7762
7763         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7764                 /*
7765                  * A simple interface call
7766                  *
7767                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7768                  * The imt slot contains a function descriptor for a runtime function + arg.
7769                  */
7770                 int slot_reg = alloc_preg (cfg);
7771                 int addr_reg = alloc_preg (cfg);
7772                 int arg_reg = alloc_preg (cfg);
7773                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7774
7775                 vtable_reg = alloc_preg (cfg);
7776                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7777                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7778
7779                 /*
7780                  * The slot is already initialized when the vtable is created so there is no need
7781                  * to check it here.
7782                  */
7783
7784                 /* Load the imt slot, which contains a function descriptor. */
7785                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7786
7787                 /* Load the address + arg of the imt thunk from the imt slot */
7788                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7789                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7790                 /*
7791                  * IMT thunks in llvm-only mode are C functions which take an info argument
7792                  * plus the imt method and return the ftndesc to call.
7793                  */
7794                 icall_args [0] = thunk_arg_ins;
7795                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7796                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7797                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7798
7799                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7800         }
7801
7802         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7803                 /*
7804                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7805                  * dynamically extended as more instantiations are discovered.
7806                  * This handles generic virtual methods both on classes and interfaces.
7807                  */
7808                 int slot_reg = alloc_preg (cfg);
7809                 int addr_reg = alloc_preg (cfg);
7810                 int arg_reg = alloc_preg (cfg);
7811                 int ftndesc_reg = alloc_preg (cfg);
7812                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7813                 MonoBasicBlock *slowpath_bb, *end_bb;
7814
7815                 NEW_BBLOCK (cfg, slowpath_bb);
7816                 NEW_BBLOCK (cfg, end_bb);
7817
7818                 vtable_reg = alloc_preg (cfg);
7819                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7820                 if (is_iface)
7821                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7822                 else
7823                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7824
7825                 /* Load the slot, which contains a function descriptor. */
7826                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7827
7828                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7829                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7830                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7831                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7832
7833                 /* Fastpath */
7834                 /* Same as with iface calls */
7835                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7836                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7837                 icall_args [0] = thunk_arg_ins;
7838                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7839                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7840                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7841                 ftndesc_ins->dreg = ftndesc_reg;
7842                 /*
7843                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7844                  * they don't know about yet. Fall back to the slowpath in that case.
7845                  */
7846                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7847                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7848
7849                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7850
7851                 /* Slowpath */
7852                 MONO_START_BB (cfg, slowpath_bb);
7853                 icall_args [0] = vtable_ins;
7854                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7855                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7856                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7857                 if (is_iface)
7858                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7859                 else
7860                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7861                 ftndesc_ins->dreg = ftndesc_reg;
7862                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7863
7864                 /* Common case */
7865                 MONO_START_BB (cfg, end_bb);
7866                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7867         }
7868
7869         /*
7870          * Non-optimized cases
7871          */
7872         icall_args [0] = sp [0];
7873         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7874
7875         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7876                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7877
7878         arg_reg = alloc_preg (cfg);
7879         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7880         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7881
7882         g_assert (is_gsharedvt);
7883         if (is_iface)
7884                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7885         else
7886                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7887
7888         /*
7889          * Pass the extra argument even if the callee doesn't receive it, most
7890          * calling conventions allow this.
7891          */
7892         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7893 }
7894
7895 static gboolean
7896 is_exception_class (MonoClass *klass)
7897 {
7898         while (klass) {
7899                 if (klass == mono_defaults.exception_class)
7900                         return TRUE;
7901                 klass = klass->parent;
7902         }
7903         return FALSE;
7904 }
7905
7906 /*
7907  * is_jit_optimizer_disabled:
7908  *
7909  *   Determine whenever M's assembly has a DebuggableAttribute with the
7910  * IsJITOptimizerDisabled flag set.
7911  */
7912 static gboolean
7913 is_jit_optimizer_disabled (MonoMethod *m)
7914 {
7915         MonoError error;
7916         MonoAssembly *ass = m->klass->image->assembly;
7917         MonoCustomAttrInfo* attrs;
7918         MonoClass *klass;
7919         int i;
7920         gboolean val = FALSE;
7921
7922         g_assert (ass);
7923         if (ass->jit_optimizer_disabled_inited)
7924                 return ass->jit_optimizer_disabled;
7925
7926         klass = mono_class_try_get_debuggable_attribute_class ();
7927
7928         if (!klass) {
7929                 /* Linked away */
7930                 ass->jit_optimizer_disabled = FALSE;
7931                 mono_memory_barrier ();
7932                 ass->jit_optimizer_disabled_inited = TRUE;
7933                 return FALSE;
7934         }
7935
7936         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7937         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7938         if (attrs) {
7939                 for (i = 0; i < attrs->num_attrs; ++i) {
7940                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7941                         const gchar *p;
7942                         MonoMethodSignature *sig;
7943
7944                         if (!attr->ctor || attr->ctor->klass != klass)
7945                                 continue;
7946                         /* Decode the attribute. See reflection.c */
7947                         p = (const char*)attr->data;
7948                         g_assert (read16 (p) == 0x0001);
7949                         p += 2;
7950
7951                         // FIXME: Support named parameters
7952                         sig = mono_method_signature (attr->ctor);
7953                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7954                                 continue;
7955                         /* Two boolean arguments */
7956                         p ++;
7957                         val = *p;
7958                 }
7959                 mono_custom_attrs_free (attrs);
7960         }
7961
7962         ass->jit_optimizer_disabled = val;
7963         mono_memory_barrier ();
7964         ass->jit_optimizer_disabled_inited = TRUE;
7965
7966         return val;
7967 }
7968
7969 static gboolean
7970 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7971 {
7972         gboolean supported_tail_call;
7973         int i;
7974
7975         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7976
7977         for (i = 0; i < fsig->param_count; ++i) {
7978                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7979                         /* These can point to the current method's stack */
7980                         supported_tail_call = FALSE;
7981         }
7982         if (fsig->hasthis && cmethod->klass->valuetype)
7983                 /* this might point to the current method's stack */
7984                 supported_tail_call = FALSE;
7985         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7986                 supported_tail_call = FALSE;
7987         if (cfg->method->save_lmf)
7988                 supported_tail_call = FALSE;
7989         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7990                 supported_tail_call = FALSE;
7991         if (call_opcode != CEE_CALL)
7992                 supported_tail_call = FALSE;
7993
7994         /* Debugging support */
7995 #if 0
7996         if (supported_tail_call) {
7997                 if (!mono_debug_count ())
7998                         supported_tail_call = FALSE;
7999         }
8000 #endif
8001
8002         return supported_tail_call;
8003 }
8004
8005 /*
8006  * handle_ctor_call:
8007  *
8008  *   Handle calls made to ctors from NEWOBJ opcodes.
8009  */
8010 static void
8011 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8012                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8013 {
8014         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8015
8016         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8017                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8018                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8019                         mono_class_vtable (cfg->domain, cmethod->klass);
8020                         CHECK_TYPELOAD (cmethod->klass);
8021
8022                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8023                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8024                 } else {
8025                         if (context_used) {
8026                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8027                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8028                         } else {
8029                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8030
8031                                 CHECK_TYPELOAD (cmethod->klass);
8032                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8033                         }
8034                 }
8035         }
8036
8037         /* Avoid virtual calls to ctors if possible */
8038         if (mono_class_is_marshalbyref (cmethod->klass))
8039                 callvirt_this_arg = sp [0];
8040
8041         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8042                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8043                 CHECK_CFG_EXCEPTION;
8044         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8045                            mono_method_check_inlining (cfg, cmethod) &&
8046                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8047                 int costs;
8048
8049                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8050                         cfg->real_offset += 5;
8051
8052                         *inline_costs += costs - 5;
8053                 } else {
8054                         INLINE_FAILURE ("inline failure");
8055                         // FIXME-VT: Clean this up
8056                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8057                                 GSHAREDVT_FAILURE(*ip);
8058                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8059                 }
8060         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8061                 MonoInst *addr;
8062
8063                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8064
8065                 if (cfg->llvm_only) {
8066                         // FIXME: Avoid initializing vtable_arg
8067                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8068                 } else {
8069                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8070                 }
8071         } else if (context_used &&
8072                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8073                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8074                 MonoInst *cmethod_addr;
8075
8076                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8077
8078                 if (cfg->llvm_only) {
8079                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8080                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8081                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8082                 } else {
8083                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8084                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8085
8086                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8087                 }
8088         } else {
8089                 INLINE_FAILURE ("ctor call");
8090                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8091                                                                                   callvirt_this_arg, NULL, vtable_arg);
8092         }
8093  exception_exit:
8094         return;
8095 }
8096
8097 static void
8098 emit_setret (MonoCompile *cfg, MonoInst *val)
8099 {
8100         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8101         MonoInst *ins;
8102
8103         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8104                 MonoInst *ret_addr;
8105
8106                 if (!cfg->vret_addr) {
8107                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8108                 } else {
8109                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8110
8111                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8112                         ins->klass = mono_class_from_mono_type (ret_type);
8113                 }
8114         } else {
8115 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8116                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8117                         MonoInst *iargs [1];
8118                         MonoInst *conv;
8119
8120                         iargs [0] = val;
8121                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8122                         mono_arch_emit_setret (cfg, cfg->method, conv);
8123                 } else {
8124                         mono_arch_emit_setret (cfg, cfg->method, val);
8125                 }
8126 #else
8127                 mono_arch_emit_setret (cfg, cfg->method, val);
8128 #endif
8129         }
8130 }
8131
8132 /*
8133  * mono_method_to_ir:
8134  *
8135  *   Translate the .net IL into linear IR.
8136  */
8137 int
8138 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8139                    MonoInst *return_var, MonoInst **inline_args,
8140                    guint inline_offset, gboolean is_virtual_call)
8141 {
8142         MonoError error;
8143         MonoInst *ins, **sp, **stack_start;
8144         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8145         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8146         MonoMethod *cmethod, *method_definition;
8147         MonoInst **arg_array;
8148         MonoMethodHeader *header;
8149         MonoImage *image;
8150         guint32 token, ins_flag;
8151         MonoClass *klass;
8152         MonoClass *constrained_class = NULL;
8153         unsigned char *ip, *end, *target, *err_pos;
8154         MonoMethodSignature *sig;
8155         MonoGenericContext *generic_context = NULL;
8156         MonoGenericContainer *generic_container = NULL;
8157         MonoType **param_types;
8158         int i, n, start_new_bblock, dreg;
8159         int num_calls = 0, inline_costs = 0;
8160         int breakpoint_id = 0;
8161         guint num_args;
8162         GSList *class_inits = NULL;
8163         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8164         int context_used;
8165         gboolean init_locals, seq_points, skip_dead_blocks;
8166         gboolean sym_seq_points = FALSE;
8167         MonoDebugMethodInfo *minfo;
8168         MonoBitSet *seq_point_locs = NULL;
8169         MonoBitSet *seq_point_set_locs = NULL;
8170
8171         cfg->disable_inline = is_jit_optimizer_disabled (method);
8172
8173         /* serialization and xdomain stuff may need access to private fields and methods */
8174         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8175         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8176         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8177         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8178         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8179         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8180
8181         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8182         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8183         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8184         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8185         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8186
8187         image = method->klass->image;
8188         header = mono_method_get_header_checked (method, &cfg->error);
8189         if (!header) {
8190                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8191                 goto exception_exit;
8192         }
8193         generic_container = mono_method_get_generic_container (method);
8194         sig = mono_method_signature (method);
8195         num_args = sig->hasthis + sig->param_count;
8196         ip = (unsigned char*)header->code;
8197         cfg->cil_start = ip;
8198         end = ip + header->code_size;
8199         cfg->stat_cil_code_size += header->code_size;
8200
8201         seq_points = cfg->gen_seq_points && cfg->method == method;
8202
8203         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8204                 /* We could hit a seq point before attaching to the JIT (#8338) */
8205                 seq_points = FALSE;
8206         }
8207
8208         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8209                 minfo = mono_debug_lookup_method (method);
8210                 if (minfo) {
8211                         MonoSymSeqPoint *sps;
8212                         int i, n_il_offsets;
8213
8214                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8215                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8216                         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);
8217                         sym_seq_points = TRUE;
8218                         for (i = 0; i < n_il_offsets; ++i) {
8219                                 if (sps [i].il_offset < header->code_size)
8220                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8221                         }
8222                         g_free (sps);
8223                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8224                         /* Methods without line number info like auto-generated property accessors */
8225                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8226                         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);
8227                         sym_seq_points = TRUE;
8228                 }
8229         }
8230
8231         /*
8232          * Methods without init_locals set could cause asserts in various passes
8233          * (#497220). To work around this, we emit dummy initialization opcodes
8234          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8235          * on some platforms.
8236          */
8237         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8238                 init_locals = header->init_locals;
8239         else
8240                 init_locals = TRUE;
8241
8242         method_definition = method;
8243         while (method_definition->is_inflated) {
8244                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8245                 method_definition = imethod->declaring;
8246         }
8247
8248         /* SkipVerification is not allowed if core-clr is enabled */
8249         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8250                 dont_verify = TRUE;
8251                 dont_verify_stloc = TRUE;
8252         }
8253
8254         if (sig->is_inflated)
8255                 generic_context = mono_method_get_context (method);
8256         else if (generic_container)
8257                 generic_context = &generic_container->context;
8258         cfg->generic_context = generic_context;
8259
8260         if (!cfg->gshared)
8261                 g_assert (!sig->has_type_parameters);
8262
8263         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8264                 g_assert (method->is_inflated);
8265                 g_assert (mono_method_get_context (method)->method_inst);
8266         }
8267         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8268                 g_assert (sig->generic_param_count);
8269
8270         if (cfg->method == method) {
8271                 cfg->real_offset = 0;
8272         } else {
8273                 cfg->real_offset = inline_offset;
8274         }
8275
8276         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8277         cfg->cil_offset_to_bb_len = header->code_size;
8278
8279         cfg->current_method = method;
8280
8281         if (cfg->verbose_level > 2)
8282                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8283
8284         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8285         if (sig->hasthis)
8286                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8287         for (n = 0; n < sig->param_count; ++n)
8288                 param_types [n + sig->hasthis] = sig->params [n];
8289         cfg->arg_types = param_types;
8290
8291         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8292         if (cfg->method == method) {
8293
8294                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8295                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8296
8297                 /* ENTRY BLOCK */
8298                 NEW_BBLOCK (cfg, start_bblock);
8299                 cfg->bb_entry = start_bblock;
8300                 start_bblock->cil_code = NULL;
8301                 start_bblock->cil_length = 0;
8302
8303                 /* EXIT BLOCK */
8304                 NEW_BBLOCK (cfg, end_bblock);
8305                 cfg->bb_exit = end_bblock;
8306                 end_bblock->cil_code = NULL;
8307                 end_bblock->cil_length = 0;
8308                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8309                 g_assert (cfg->num_bblocks == 2);
8310
8311                 arg_array = cfg->args;
8312
8313                 if (header->num_clauses) {
8314                         cfg->spvars = g_hash_table_new (NULL, NULL);
8315                         cfg->exvars = g_hash_table_new (NULL, NULL);
8316                 }
8317                 /* handle exception clauses */
8318                 for (i = 0; i < header->num_clauses; ++i) {
8319                         MonoBasicBlock *try_bb;
8320                         MonoExceptionClause *clause = &header->clauses [i];
8321                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8322
8323                         try_bb->real_offset = clause->try_offset;
8324                         try_bb->try_start = TRUE;
8325                         try_bb->region = ((i + 1) << 8) | clause->flags;
8326                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8327                         tblock->real_offset = clause->handler_offset;
8328                         tblock->flags |= BB_EXCEPTION_HANDLER;
8329
8330                         /*
8331                          * Linking the try block with the EH block hinders inlining as we won't be able to
8332                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8333                          */
8334                         if (COMPILE_LLVM (cfg))
8335                                 link_bblock (cfg, try_bb, tblock);
8336
8337                         if (*(ip + clause->handler_offset) == CEE_POP)
8338                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8339
8340                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8341                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8342                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8343                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8344                                 MONO_ADD_INS (tblock, ins);
8345
8346                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8347                                         /* finally clauses already have a seq point */
8348                                         /* seq points for filter clauses are emitted below */
8349                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8350                                         MONO_ADD_INS (tblock, ins);
8351                                 }
8352
8353                                 /* todo: is a fault block unsafe to optimize? */
8354                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8355                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8356                         }
8357
8358                         /*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);
8359                           while (p < end) {
8360                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8361                           }*/
8362                         /* catch and filter blocks get the exception object on the stack */
8363                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8364                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8365
8366                                 /* mostly like handle_stack_args (), but just sets the input args */
8367                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8368                                 tblock->in_scount = 1;
8369                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8370                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8371
8372                                 cfg->cbb = tblock;
8373
8374 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8375                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8376                                 if (!cfg->compile_llvm) {
8377                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8378                                         ins->dreg = tblock->in_stack [0]->dreg;
8379                                         MONO_ADD_INS (tblock, ins);
8380                                 }
8381 #else
8382                                 MonoInst *dummy_use;
8383
8384                                 /*
8385                                  * Add a dummy use for the exvar so its liveness info will be
8386                                  * correct.
8387                                  */
8388                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8389 #endif
8390
8391                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8392                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8393                                         MONO_ADD_INS (tblock, ins);
8394                                 }
8395
8396                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8397                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8398                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8399                                         tblock->real_offset = clause->data.filter_offset;
8400                                         tblock->in_scount = 1;
8401                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8402                                         /* The filter block shares the exvar with the handler block */
8403                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8404                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8405                                         MONO_ADD_INS (tblock, ins);
8406                                 }
8407                         }
8408
8409                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8410                                         clause->data.catch_class &&
8411                                         cfg->gshared &&
8412                                         mono_class_check_context_used (clause->data.catch_class)) {
8413                                 /*
8414                                  * In shared generic code with catch
8415                                  * clauses containing type variables
8416                                  * the exception handling code has to
8417                                  * be able to get to the rgctx.
8418                                  * Therefore we have to make sure that
8419                                  * the vtable/mrgctx argument (for
8420                                  * static or generic methods) or the
8421                                  * "this" argument (for non-static
8422                                  * methods) are live.
8423                                  */
8424                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8425                                                 mini_method_get_context (method)->method_inst ||
8426                                                 method->klass->valuetype) {
8427                                         mono_get_vtable_var (cfg);
8428                                 } else {
8429                                         MonoInst *dummy_use;
8430
8431                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8432                                 }
8433                         }
8434                 }
8435         } else {
8436                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8437                 cfg->cbb = start_bblock;
8438                 cfg->args = arg_array;
8439                 mono_save_args (cfg, sig, inline_args);
8440         }
8441
8442         /* FIRST CODE BLOCK */
8443         NEW_BBLOCK (cfg, tblock);
8444         tblock->cil_code = ip;
8445         cfg->cbb = tblock;
8446         cfg->ip = ip;
8447
8448         ADD_BBLOCK (cfg, tblock);
8449
8450         if (cfg->method == method) {
8451                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8452                 if (breakpoint_id) {
8453                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8454                         MONO_ADD_INS (cfg->cbb, ins);
8455                 }
8456         }
8457
8458         /* we use a separate basic block for the initialization code */
8459         NEW_BBLOCK (cfg, init_localsbb);
8460         cfg->bb_init = init_localsbb;
8461         init_localsbb->real_offset = cfg->real_offset;
8462         start_bblock->next_bb = init_localsbb;
8463         init_localsbb->next_bb = cfg->cbb;
8464         link_bblock (cfg, start_bblock, init_localsbb);
8465         link_bblock (cfg, init_localsbb, cfg->cbb);
8466
8467         cfg->cbb = init_localsbb;
8468
8469         if (cfg->gsharedvt && cfg->method == method) {
8470                 MonoGSharedVtMethodInfo *info;
8471                 MonoInst *var, *locals_var;
8472                 int dreg;
8473
8474                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8475                 info->method = cfg->method;
8476                 info->count_entries = 16;
8477                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8478                 cfg->gsharedvt_info = info;
8479
8480                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8481                 /* prevent it from being register allocated */
8482                 //var->flags |= MONO_INST_VOLATILE;
8483                 cfg->gsharedvt_info_var = var;
8484
8485                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8486                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8487
8488                 /* Allocate locals */
8489                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8490                 /* prevent it from being register allocated */
8491                 //locals_var->flags |= MONO_INST_VOLATILE;
8492                 cfg->gsharedvt_locals_var = locals_var;
8493
8494                 dreg = alloc_ireg (cfg);
8495                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8496
8497                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8498                 ins->dreg = locals_var->dreg;
8499                 ins->sreg1 = dreg;
8500                 MONO_ADD_INS (cfg->cbb, ins);
8501                 cfg->gsharedvt_locals_var_ins = ins;
8502
8503                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8504                 /*
8505                 if (init_locals)
8506                         ins->flags |= MONO_INST_INIT;
8507                 */
8508         }
8509
8510         if (mono_security_core_clr_enabled ()) {
8511                 /* check if this is native code, e.g. an icall or a p/invoke */
8512                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8513                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8514                         if (wrapped) {
8515                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8516                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8517
8518                                 /* if this ia a native call then it can only be JITted from platform code */
8519                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8520                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8521                                                 MonoException *ex = icall ? mono_get_exception_security () :
8522                                                         mono_get_exception_method_access ();
8523                                                 emit_throw_exception (cfg, ex);
8524                                         }
8525                                 }
8526                         }
8527                 }
8528         }
8529
8530         CHECK_CFG_EXCEPTION;
8531
8532         if (header->code_size == 0)
8533                 UNVERIFIED;
8534
8535         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8536                 ip = err_pos;
8537                 UNVERIFIED;
8538         }
8539
8540         if (cfg->method == method)
8541                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8542
8543         for (n = 0; n < header->num_locals; ++n) {
8544                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8545                         UNVERIFIED;
8546         }
8547         class_inits = NULL;
8548
8549         /* We force the vtable variable here for all shared methods
8550            for the possibility that they might show up in a stack
8551            trace where their exact instantiation is needed. */
8552         if (cfg->gshared && method == cfg->method) {
8553                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8554                                 mini_method_get_context (method)->method_inst ||
8555                                 method->klass->valuetype) {
8556                         mono_get_vtable_var (cfg);
8557                 } else {
8558                         /* FIXME: Is there a better way to do this?
8559                            We need the variable live for the duration
8560                            of the whole method. */
8561                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8562                 }
8563         }
8564
8565         /* add a check for this != NULL to inlined methods */
8566         if (is_virtual_call) {
8567                 MonoInst *arg_ins;
8568
8569                 NEW_ARGLOAD (cfg, arg_ins, 0);
8570                 MONO_ADD_INS (cfg->cbb, arg_ins);
8571                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8572         }
8573
8574         skip_dead_blocks = !dont_verify;
8575         if (skip_dead_blocks) {
8576                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8577                 CHECK_CFG_ERROR;
8578                 g_assert (bb);
8579         }
8580
8581         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8582         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8583
8584         ins_flag = 0;
8585         start_new_bblock = 0;
8586         while (ip < end) {
8587                 if (cfg->method == method)
8588                         cfg->real_offset = ip - header->code;
8589                 else
8590                         cfg->real_offset = inline_offset;
8591                 cfg->ip = ip;
8592
8593                 context_used = 0;
8594
8595                 if (start_new_bblock) {
8596                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8597                         if (start_new_bblock == 2) {
8598                                 g_assert (ip == tblock->cil_code);
8599                         } else {
8600                                 GET_BBLOCK (cfg, tblock, ip);
8601                         }
8602                         cfg->cbb->next_bb = tblock;
8603                         cfg->cbb = tblock;
8604                         start_new_bblock = 0;
8605                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8606                                 if (cfg->verbose_level > 3)
8607                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8608                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8609                                 *sp++ = ins;
8610                         }
8611                         if (class_inits)
8612                                 g_slist_free (class_inits);
8613                         class_inits = NULL;
8614                 } else {
8615                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8616                                 link_bblock (cfg, cfg->cbb, tblock);
8617                                 if (sp != stack_start) {
8618                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8619                                         sp = stack_start;
8620                                         CHECK_UNVERIFIABLE (cfg);
8621                                 }
8622                                 cfg->cbb->next_bb = tblock;
8623                                 cfg->cbb = tblock;
8624                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8625                                         if (cfg->verbose_level > 3)
8626                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8627                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8628                                         *sp++ = ins;
8629                                 }
8630                                 g_slist_free (class_inits);
8631                                 class_inits = NULL;
8632                         }
8633                 }
8634
8635                 if (skip_dead_blocks) {
8636                         int ip_offset = ip - header->code;
8637
8638                         if (ip_offset == bb->end)
8639                                 bb = bb->next;
8640
8641                         if (bb->dead) {
8642                                 int op_size = mono_opcode_size (ip, end);
8643                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8644
8645                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8646
8647                                 if (ip_offset + op_size == bb->end) {
8648                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8649                                         MONO_ADD_INS (cfg->cbb, ins);
8650                                         start_new_bblock = 1;
8651                                 }
8652
8653                                 ip += op_size;
8654                                 continue;
8655                         }
8656                 }
8657                 /*
8658                  * Sequence points are points where the debugger can place a breakpoint.
8659                  * Currently, we generate these automatically at points where the IL
8660                  * stack is empty.
8661                  */
8662                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8663                         /*
8664                          * Make methods interruptable at the beginning, and at the targets of
8665                          * backward branches.
8666                          * Also, do this at the start of every bblock in methods with clauses too,
8667                          * to be able to handle instructions with inprecise control flow like
8668                          * throw/endfinally.
8669                          * Backward branches are handled at the end of method-to-ir ().
8670                          */
8671                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8672                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8673
8674                         /* Avoid sequence points on empty IL like .volatile */
8675                         // FIXME: Enable this
8676                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8677                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8678                         if ((sp != stack_start) && !sym_seq_point)
8679                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8680                         MONO_ADD_INS (cfg->cbb, ins);
8681
8682                         if (sym_seq_points)
8683                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8684                 }
8685
8686                 cfg->cbb->real_offset = cfg->real_offset;
8687
8688                 if ((cfg->method == method) && cfg->coverage_info) {
8689                         guint32 cil_offset = ip - header->code;
8690                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8691
8692                         /* TODO: Use an increment here */
8693 #if defined(TARGET_X86)
8694                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8695                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8696                         ins->inst_imm = 1;
8697                         MONO_ADD_INS (cfg->cbb, ins);
8698 #else
8699                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8700                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8701 #endif
8702                 }
8703
8704                 if (cfg->verbose_level > 3)
8705                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8706
8707                 switch (*ip) {
8708                 case CEE_NOP:
8709                         if (seq_points && !sym_seq_points && sp != stack_start) {
8710                                 /*
8711                                  * The C# compiler uses these nops to notify the JIT that it should
8712                                  * insert seq points.
8713                                  */
8714                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8715                                 MONO_ADD_INS (cfg->cbb, ins);
8716                         }
8717                         if (cfg->keep_cil_nops)
8718                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8719                         else
8720                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8721                         ip++;
8722                         MONO_ADD_INS (cfg->cbb, ins);
8723                         break;
8724                 case CEE_BREAK:
8725                         if (should_insert_brekpoint (cfg->method)) {
8726                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8727                         } else {
8728                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8729                         }
8730                         ip++;
8731                         MONO_ADD_INS (cfg->cbb, ins);
8732                         break;
8733                 case CEE_LDARG_0:
8734                 case CEE_LDARG_1:
8735                 case CEE_LDARG_2:
8736                 case CEE_LDARG_3:
8737                         CHECK_STACK_OVF (1);
8738                         n = (*ip)-CEE_LDARG_0;
8739                         CHECK_ARG (n);
8740                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8741                         ip++;
8742                         *sp++ = ins;
8743                         break;
8744                 case CEE_LDLOC_0:
8745                 case CEE_LDLOC_1:
8746                 case CEE_LDLOC_2:
8747                 case CEE_LDLOC_3:
8748                         CHECK_STACK_OVF (1);
8749                         n = (*ip)-CEE_LDLOC_0;
8750                         CHECK_LOCAL (n);
8751                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8752                         ip++;
8753                         *sp++ = ins;
8754                         break;
8755                 case CEE_STLOC_0:
8756                 case CEE_STLOC_1:
8757                 case CEE_STLOC_2:
8758                 case CEE_STLOC_3: {
8759                         CHECK_STACK (1);
8760                         n = (*ip)-CEE_STLOC_0;
8761                         CHECK_LOCAL (n);
8762                         --sp;
8763                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8764                                 UNVERIFIED;
8765                         emit_stloc_ir (cfg, sp, header, n);
8766                         ++ip;
8767                         inline_costs += 1;
8768                         break;
8769                         }
8770                 case CEE_LDARG_S:
8771                         CHECK_OPSIZE (2);
8772                         CHECK_STACK_OVF (1);
8773                         n = ip [1];
8774                         CHECK_ARG (n);
8775                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8776                         *sp++ = ins;
8777                         ip += 2;
8778                         break;
8779                 case CEE_LDARGA_S:
8780                         CHECK_OPSIZE (2);
8781                         CHECK_STACK_OVF (1);
8782                         n = ip [1];
8783                         CHECK_ARG (n);
8784                         NEW_ARGLOADA (cfg, ins, n);
8785                         MONO_ADD_INS (cfg->cbb, ins);
8786                         *sp++ = ins;
8787                         ip += 2;
8788                         break;
8789                 case CEE_STARG_S:
8790                         CHECK_OPSIZE (2);
8791                         CHECK_STACK (1);
8792                         --sp;
8793                         n = ip [1];
8794                         CHECK_ARG (n);
8795                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8796                                 UNVERIFIED;
8797                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8798                         ip += 2;
8799                         break;
8800                 case CEE_LDLOC_S:
8801                         CHECK_OPSIZE (2);
8802                         CHECK_STACK_OVF (1);
8803                         n = ip [1];
8804                         CHECK_LOCAL (n);
8805                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8806                         *sp++ = ins;
8807                         ip += 2;
8808                         break;
8809                 case CEE_LDLOCA_S: {
8810                         unsigned char *tmp_ip;
8811                         CHECK_OPSIZE (2);
8812                         CHECK_STACK_OVF (1);
8813                         CHECK_LOCAL (ip [1]);
8814
8815                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8816                                 ip = tmp_ip;
8817                                 inline_costs += 1;
8818                                 break;
8819                         }
8820
8821                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8822                         *sp++ = ins;
8823                         ip += 2;
8824                         break;
8825                 }
8826                 case CEE_STLOC_S:
8827                         CHECK_OPSIZE (2);
8828                         CHECK_STACK (1);
8829                         --sp;
8830                         CHECK_LOCAL (ip [1]);
8831                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8832                                 UNVERIFIED;
8833                         emit_stloc_ir (cfg, sp, header, ip [1]);
8834                         ip += 2;
8835                         inline_costs += 1;
8836                         break;
8837                 case CEE_LDNULL:
8838                         CHECK_STACK_OVF (1);
8839                         EMIT_NEW_PCONST (cfg, ins, NULL);
8840                         ins->type = STACK_OBJ;
8841                         ++ip;
8842                         *sp++ = ins;
8843                         break;
8844                 case CEE_LDC_I4_M1:
8845                         CHECK_STACK_OVF (1);
8846                         EMIT_NEW_ICONST (cfg, ins, -1);
8847                         ++ip;
8848                         *sp++ = ins;
8849                         break;
8850                 case CEE_LDC_I4_0:
8851                 case CEE_LDC_I4_1:
8852                 case CEE_LDC_I4_2:
8853                 case CEE_LDC_I4_3:
8854                 case CEE_LDC_I4_4:
8855                 case CEE_LDC_I4_5:
8856                 case CEE_LDC_I4_6:
8857                 case CEE_LDC_I4_7:
8858                 case CEE_LDC_I4_8:
8859                         CHECK_STACK_OVF (1);
8860                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8861                         ++ip;
8862                         *sp++ = ins;
8863                         break;
8864                 case CEE_LDC_I4_S:
8865                         CHECK_OPSIZE (2);
8866                         CHECK_STACK_OVF (1);
8867                         ++ip;
8868                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8869                         ++ip;
8870                         *sp++ = ins;
8871                         break;
8872                 case CEE_LDC_I4:
8873                         CHECK_OPSIZE (5);
8874                         CHECK_STACK_OVF (1);
8875                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8876                         ip += 5;
8877                         *sp++ = ins;
8878                         break;
8879                 case CEE_LDC_I8:
8880                         CHECK_OPSIZE (9);
8881                         CHECK_STACK_OVF (1);
8882                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8883                         ins->type = STACK_I8;
8884                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8885                         ++ip;
8886                         ins->inst_l = (gint64)read64 (ip);
8887                         MONO_ADD_INS (cfg->cbb, ins);
8888                         ip += 8;
8889                         *sp++ = ins;
8890                         break;
8891                 case CEE_LDC_R4: {
8892                         float *f;
8893                         gboolean use_aotconst = FALSE;
8894
8895 #ifdef TARGET_POWERPC
8896                         /* FIXME: Clean this up */
8897                         if (cfg->compile_aot)
8898                                 use_aotconst = TRUE;
8899 #endif
8900
8901                         /* FIXME: we should really allocate this only late in the compilation process */
8902                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8903                         CHECK_OPSIZE (5);
8904                         CHECK_STACK_OVF (1);
8905
8906                         if (use_aotconst) {
8907                                 MonoInst *cons;
8908                                 int dreg;
8909
8910                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8911
8912                                 dreg = alloc_freg (cfg);
8913                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8914                                 ins->type = cfg->r4_stack_type;
8915                         } else {
8916                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8917                                 ins->type = cfg->r4_stack_type;
8918                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8919                                 ins->inst_p0 = f;
8920                                 MONO_ADD_INS (cfg->cbb, ins);
8921                         }
8922                         ++ip;
8923                         readr4 (ip, f);
8924                         ip += 4;
8925                         *sp++ = ins;
8926                         break;
8927                 }
8928                 case CEE_LDC_R8: {
8929                         double *d;
8930                         gboolean use_aotconst = FALSE;
8931
8932 #ifdef TARGET_POWERPC
8933                         /* FIXME: Clean this up */
8934                         if (cfg->compile_aot)
8935                                 use_aotconst = TRUE;
8936 #endif
8937
8938                         /* FIXME: we should really allocate this only late in the compilation process */
8939                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8940                         CHECK_OPSIZE (9);
8941                         CHECK_STACK_OVF (1);
8942
8943                         if (use_aotconst) {
8944                                 MonoInst *cons;
8945                                 int dreg;
8946
8947                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8948
8949                                 dreg = alloc_freg (cfg);
8950                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8951                                 ins->type = STACK_R8;
8952                         } else {
8953                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8954                                 ins->type = STACK_R8;
8955                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8956                                 ins->inst_p0 = d;
8957                                 MONO_ADD_INS (cfg->cbb, ins);
8958                         }
8959                         ++ip;
8960                         readr8 (ip, d);
8961                         ip += 8;
8962                         *sp++ = ins;
8963                         break;
8964                 }
8965                 case CEE_DUP: {
8966                         MonoInst *temp, *store;
8967                         CHECK_STACK (1);
8968                         CHECK_STACK_OVF (1);
8969                         sp--;
8970                         ins = *sp;
8971
8972                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8973                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8974
8975                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8976                         *sp++ = ins;
8977
8978                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8979                         *sp++ = ins;
8980
8981                         ++ip;
8982                         inline_costs += 2;
8983                         break;
8984                 }
8985                 case CEE_POP:
8986                         CHECK_STACK (1);
8987                         ip++;
8988                         --sp;
8989
8990 #ifdef TARGET_X86
8991                         if (sp [0]->type == STACK_R8)
8992                                 /* we need to pop the value from the x86 FP stack */
8993                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8994 #endif
8995                         break;
8996                 case CEE_JMP: {
8997                         MonoCallInst *call;
8998                         MonoMethodSignature *fsig;
8999                         int i, n;
9000
9001                         INLINE_FAILURE ("jmp");
9002                         GSHAREDVT_FAILURE (*ip);
9003
9004                         CHECK_OPSIZE (5);
9005                         if (stack_start != sp)
9006                                 UNVERIFIED;
9007                         token = read32 (ip + 1);
9008                         /* FIXME: check the signature matches */
9009                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9010                         CHECK_CFG_ERROR;
9011
9012                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9013                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9014
9015                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9016
9017                         fsig = mono_method_signature (cmethod);
9018                         n = fsig->param_count + fsig->hasthis;
9019                         if (cfg->llvm_only) {
9020                                 MonoInst **args;
9021
9022                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9023                                 for (i = 0; i < n; ++i)
9024                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9025                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9026                                 /*
9027                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9028                                  * have to emit a normal return since llvm expects it.
9029                                  */
9030                                 if (cfg->ret)
9031                                         emit_setret (cfg, ins);
9032                                 MONO_INST_NEW (cfg, ins, OP_BR);
9033                                 ins->inst_target_bb = end_bblock;
9034                                 MONO_ADD_INS (cfg->cbb, ins);
9035                                 link_bblock (cfg, cfg->cbb, end_bblock);
9036                                 ip += 5;
9037                                 break;
9038                         } else if (cfg->backend->have_op_tail_call) {
9039                                 /* Handle tail calls similarly to calls */
9040                                 DISABLE_AOT (cfg);
9041
9042                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9043                                 call->method = cmethod;
9044                                 call->tail_call = TRUE;
9045                                 call->signature = mono_method_signature (cmethod);
9046                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9047                                 call->inst.inst_p0 = cmethod;
9048                                 for (i = 0; i < n; ++i)
9049                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9050
9051                                 mono_arch_emit_call (cfg, call);
9052                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9053                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9054                         } else {
9055                                 for (i = 0; i < num_args; ++i)
9056                                         /* Prevent arguments from being optimized away */
9057                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9058
9059                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9060                                 ins = (MonoInst*)call;
9061                                 ins->inst_p0 = cmethod;
9062                                 MONO_ADD_INS (cfg->cbb, ins);
9063                         }
9064
9065                         ip += 5;
9066                         start_new_bblock = 1;
9067                         break;
9068                 }
9069                 case CEE_CALLI: {
9070                         MonoInst *addr;
9071                         MonoMethodSignature *fsig;
9072
9073                         CHECK_OPSIZE (5);
9074                         token = read32 (ip + 1);
9075
9076                         ins = NULL;
9077
9078                         //GSHAREDVT_FAILURE (*ip);
9079                         cmethod = NULL;
9080                         CHECK_STACK (1);
9081                         --sp;
9082                         addr = *sp;
9083                         fsig = mini_get_signature (method, token, generic_context);
9084
9085                         if (method->dynamic && fsig->pinvoke) {
9086                                 MonoInst *args [3];
9087
9088                                 /*
9089                                  * This is a call through a function pointer using a pinvoke
9090                                  * signature. Have to create a wrapper and call that instead.
9091                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9092                                  * instead based on the signature.
9093                                  */
9094                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9095                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9096                                 args [2] = addr;
9097                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9098                         }
9099
9100                         n = fsig->param_count + fsig->hasthis;
9101
9102                         CHECK_STACK (n);
9103
9104                         //g_assert (!virtual_ || fsig->hasthis);
9105
9106                         sp -= n;
9107
9108                         inline_costs += 10 * num_calls++;
9109
9110                         /*
9111                          * Making generic calls out of gsharedvt methods.
9112                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9113                          * patching gshared method addresses into a gsharedvt method.
9114                          */
9115                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9116                                 /*
9117                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9118                                  */
9119                                 MonoInst *callee = addr;
9120
9121                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9122                                         /* Not tested */
9123                                         GSHAREDVT_FAILURE (*ip);
9124
9125                                 if (cfg->llvm_only)
9126                                         // FIXME:
9127                                         GSHAREDVT_FAILURE (*ip);
9128
9129                                 addr = emit_get_rgctx_sig (cfg, context_used,
9130                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9131                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9132                                 goto calli_end;
9133                         }
9134
9135                         /* Prevent inlining of methods with indirect calls */
9136                         INLINE_FAILURE ("indirect call");
9137
9138                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9139                                 MonoJumpInfoType info_type;
9140                                 gpointer info_data;
9141
9142                                 /*
9143                                  * Instead of emitting an indirect call, emit a direct call
9144                                  * with the contents of the aotconst as the patch info.
9145                                  */
9146                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9147                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9148                                         info_data = addr->inst_p0;
9149                                 } else {
9150                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9151                                         info_data = addr->inst_right->inst_left;
9152                                 }
9153
9154                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9155                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9156                                         NULLIFY_INS (addr);
9157                                         goto calli_end;
9158                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9159                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9160                                         NULLIFY_INS (addr);
9161                                         goto calli_end;
9162                                 }
9163                         }
9164                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9165
9166                         calli_end:
9167
9168                         /* End of call, INS should contain the result of the call, if any */
9169
9170                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9171                                 g_assert (ins);
9172                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9173                         }
9174
9175                         CHECK_CFG_EXCEPTION;
9176
9177                         ip += 5;
9178                         ins_flag = 0;
9179                         constrained_class = NULL;
9180                         break;
9181                 }
9182                 case CEE_CALL:
9183                 case CEE_CALLVIRT: {
9184                         MonoInst *addr = NULL;
9185                         MonoMethodSignature *fsig = NULL;
9186                         int array_rank = 0;
9187                         int virtual_ = *ip == CEE_CALLVIRT;
9188                         gboolean pass_imt_from_rgctx = FALSE;
9189                         MonoInst *imt_arg = NULL;
9190                         MonoInst *keep_this_alive = NULL;
9191                         gboolean pass_vtable = FALSE;
9192                         gboolean pass_mrgctx = FALSE;
9193                         MonoInst *vtable_arg = NULL;
9194                         gboolean check_this = FALSE;
9195                         gboolean supported_tail_call = FALSE;
9196                         gboolean tail_call = FALSE;
9197                         gboolean need_seq_point = FALSE;
9198                         guint32 call_opcode = *ip;
9199                         gboolean emit_widen = TRUE;
9200                         gboolean push_res = TRUE;
9201                         gboolean skip_ret = FALSE;
9202                         gboolean delegate_invoke = FALSE;
9203                         gboolean direct_icall = FALSE;
9204                         gboolean constrained_partial_call = FALSE;
9205                         MonoMethod *cil_method;
9206
9207                         CHECK_OPSIZE (5);
9208                         token = read32 (ip + 1);
9209
9210                         ins = NULL;
9211
9212                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9213                         CHECK_CFG_ERROR;
9214
9215                         cil_method = cmethod;
9216
9217                         if (constrained_class) {
9218                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9219                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9220                                                 g_assert (!cmethod->klass->valuetype);
9221                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9222                                                         constrained_partial_call = TRUE;
9223                                         }
9224                                 }
9225
9226                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9227                                         if (cfg->verbose_level > 2)
9228                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9229                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9230                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9231                                                   cfg->gshared)) {
9232                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9233                                                 CHECK_CFG_ERROR;
9234                                         }
9235                                 } else {
9236                                         if (cfg->verbose_level > 2)
9237                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9238
9239                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9240                                                 /*
9241                                                  * This is needed since get_method_constrained can't find
9242                                                  * the method in klass representing a type var.
9243                                                  * The type var is guaranteed to be a reference type in this
9244                                                  * case.
9245                                                  */
9246                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9247                                                         g_assert (!cmethod->klass->valuetype);
9248                                         } else {
9249                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9250                                                 CHECK_CFG_ERROR;
9251                                         }
9252                                 }
9253                         }
9254
9255                         if (!dont_verify && !cfg->skip_visibility) {
9256                                 MonoMethod *target_method = cil_method;
9257                                 if (method->is_inflated) {
9258                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9259                                         CHECK_CFG_ERROR;
9260                                 }
9261                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9262                                         !mono_method_can_access_method (method, cil_method))
9263                                         METHOD_ACCESS_FAILURE (method, cil_method);
9264                         }
9265
9266                         if (mono_security_core_clr_enabled ())
9267                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9268
9269                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9270                                 /* MS.NET seems to silently convert this to a callvirt */
9271                                 virtual_ = 1;
9272
9273                         {
9274                                 /*
9275                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9276                                  * converts to a callvirt.
9277                                  *
9278                                  * tests/bug-515884.il is an example of this behavior
9279                                  */
9280                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9281                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9282                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9283                                         virtual_ = 1;
9284                         }
9285
9286                         if (!cmethod->klass->inited)
9287                                 if (!mono_class_init (cmethod->klass))
9288                                         TYPE_LOAD_ERROR (cmethod->klass);
9289
9290                         fsig = mono_method_signature (cmethod);
9291                         if (!fsig)
9292                                 LOAD_ERROR;
9293                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9294                                 mini_class_is_system_array (cmethod->klass)) {
9295                                 array_rank = cmethod->klass->rank;
9296                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9297                                 direct_icall = TRUE;
9298                         } else if (fsig->pinvoke) {
9299                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9300                                 fsig = mono_method_signature (wrapper);
9301                         } else if (constrained_class) {
9302                         } else {
9303                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9304                                 CHECK_CFG_ERROR;
9305                         }
9306
9307                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9308                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9309
9310                         /* See code below */
9311                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9312                                 MonoBasicBlock *tbb;
9313
9314                                 GET_BBLOCK (cfg, tbb, ip + 5);
9315                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9316                                         /*
9317                                          * We want to extend the try block to cover the call, but we can't do it if the
9318                                          * call is made directly since its followed by an exception check.
9319                                          */
9320                                         direct_icall = FALSE;
9321                                 }
9322                         }
9323
9324                         mono_save_token_info (cfg, image, token, cil_method);
9325
9326                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9327                                 need_seq_point = TRUE;
9328
9329                         /* Don't support calls made using type arguments for now */
9330                         /*
9331                           if (cfg->gsharedvt) {
9332                           if (mini_is_gsharedvt_signature (fsig))
9333                           GSHAREDVT_FAILURE (*ip);
9334                           }
9335                         */
9336
9337                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9338                                 g_assert_not_reached ();
9339
9340                         n = fsig->param_count + fsig->hasthis;
9341
9342                         if (!cfg->gshared && cmethod->klass->generic_container)
9343                                 UNVERIFIED;
9344
9345                         if (!cfg->gshared)
9346                                 g_assert (!mono_method_check_context_used (cmethod));
9347
9348                         CHECK_STACK (n);
9349
9350                         //g_assert (!virtual_ || fsig->hasthis);
9351
9352                         sp -= n;
9353
9354                         /*
9355                          * We have the `constrained.' prefix opcode.
9356                          */
9357                         if (constrained_class) {
9358                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9359                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9360                                                 /* The 'Own method' case below */
9361                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9362                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9363                                         } else {
9364                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9365                                                 CHECK_CFG_EXCEPTION;
9366                                                 g_assert (ins);
9367                                                 goto call_end;
9368                                         }
9369                                 }
9370
9371                                 if (constrained_partial_call) {
9372                                         gboolean need_box = TRUE;
9373
9374                                         /*
9375                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9376                                          * called method is not known at compile time either. The called method could end up being
9377                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9378                                          * to box the receiver.
9379                                          * A simple solution would be to box always and make a normal virtual call, but that would
9380                                          * be bad performance wise.
9381                                          */
9382                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9383                                                 /*
9384                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9385                                                  */
9386                                                 need_box = FALSE;
9387                                         }
9388
9389                                         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)) {
9390                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9391                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9392                                                 ins->klass = constrained_class;
9393                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9394                                                 CHECK_CFG_EXCEPTION;
9395                                         } else if (need_box) {
9396                                                 MonoInst *box_type;
9397                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9398                                                 MonoInst *nonbox_call;
9399
9400                                                 /*
9401                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9402                                                  * if needed.
9403                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9404                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9405                                                  */
9406                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9407
9408                                                 NEW_BBLOCK (cfg, is_ref_bb);
9409                                                 NEW_BBLOCK (cfg, end_bb);
9410
9411                                                 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);
9412                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9413                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9414
9415                                                 /* Non-ref case */
9416                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9417
9418                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9419
9420                                                 /* Ref case */
9421                                                 MONO_START_BB (cfg, is_ref_bb);
9422                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9423                                                 ins->klass = constrained_class;
9424                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9425                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9426
9427                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9428
9429                                                 MONO_START_BB (cfg, end_bb);
9430                                                 cfg->cbb = end_bb;
9431
9432                                                 nonbox_call->dreg = ins->dreg;
9433                                                 goto call_end;
9434                                         } else {
9435                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9436                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9437                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9438                                                 goto call_end;
9439                                         }
9440                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9441                                         /*
9442                                          * The type parameter is instantiated as a valuetype,
9443                                          * but that type doesn't override the method we're
9444                                          * calling, so we need to box `this'.
9445                                          */
9446                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9447                                         ins->klass = constrained_class;
9448                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9449                                         CHECK_CFG_EXCEPTION;
9450                                 } else if (!constrained_class->valuetype) {
9451                                         int dreg = alloc_ireg_ref (cfg);
9452
9453                                         /*
9454                                          * The type parameter is instantiated as a reference
9455                                          * type.  We have a managed pointer on the stack, so
9456                                          * we need to dereference it here.
9457                                          */
9458                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9459                                         ins->type = STACK_OBJ;
9460                                         sp [0] = ins;
9461                                 } else {
9462                                         if (cmethod->klass->valuetype) {
9463                                                 /* Own method */
9464                                         } else {
9465                                                 /* Interface method */
9466                                                 int ioffset, slot;
9467
9468                                                 mono_class_setup_vtable (constrained_class);
9469                                                 CHECK_TYPELOAD (constrained_class);
9470                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9471                                                 if (ioffset == -1)
9472                                                         TYPE_LOAD_ERROR (constrained_class);
9473                                                 slot = mono_method_get_vtable_slot (cmethod);
9474                                                 if (slot == -1)
9475                                                         TYPE_LOAD_ERROR (cmethod->klass);
9476                                                 cmethod = constrained_class->vtable [ioffset + slot];
9477
9478                                                 if (cmethod->klass == mono_defaults.enum_class) {
9479                                                         /* Enum implements some interfaces, so treat this as the first case */
9480                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9481                                                         ins->klass = constrained_class;
9482                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9483                                                         CHECK_CFG_EXCEPTION;
9484                                                 }
9485                                         }
9486                                         virtual_ = 0;
9487                                 }
9488                                 constrained_class = NULL;
9489                         }
9490
9491                         if (check_call_signature (cfg, fsig, sp))
9492                                 UNVERIFIED;
9493
9494                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9495                                 delegate_invoke = TRUE;
9496
9497                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9498                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9499                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9500                                         emit_widen = FALSE;
9501                                 }
9502
9503                                 goto call_end;
9504                         }
9505
9506                         /*
9507                          * If the callee is a shared method, then its static cctor
9508                          * might not get called after the call was patched.
9509                          */
9510                         if (cfg->gshared && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
9511                                 emit_class_init (cfg, cmethod->klass);
9512                                 CHECK_TYPELOAD (cmethod->klass);
9513                         }
9514
9515                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9516
9517                         if (cfg->gshared) {
9518                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9519
9520                                 context_used = mini_method_check_context_used (cfg, cmethod);
9521
9522                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9523                                         /* Generic method interface
9524                                            calls are resolved via a
9525                                            helper function and don't
9526                                            need an imt. */
9527                                         if (!cmethod_context || !cmethod_context->method_inst)
9528                                                 pass_imt_from_rgctx = TRUE;
9529                                 }
9530
9531                                 /*
9532                                  * If a shared method calls another
9533                                  * shared method then the caller must
9534                                  * have a generic sharing context
9535                                  * because the magic trampoline
9536                                  * requires it.  FIXME: We shouldn't
9537                                  * have to force the vtable/mrgctx
9538                                  * variable here.  Instead there
9539                                  * should be a flag in the cfg to
9540                                  * request a generic sharing context.
9541                                  */
9542                                 if (context_used &&
9543                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9544                                         mono_get_vtable_var (cfg);
9545                         }
9546
9547                         if (pass_vtable) {
9548                                 if (context_used) {
9549                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9550                                 } else {
9551                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9552
9553                                         CHECK_TYPELOAD (cmethod->klass);
9554                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9555                                 }
9556                         }
9557
9558                         if (pass_mrgctx) {
9559                                 g_assert (!vtable_arg);
9560
9561                                 if (!cfg->compile_aot) {
9562                                         /*
9563                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9564                                          * for type load errors before.
9565                                          */
9566                                         mono_class_setup_vtable (cmethod->klass);
9567                                         CHECK_TYPELOAD (cmethod->klass);
9568                                 }
9569
9570                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9571
9572                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9573                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9574                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9575                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9576                                         if (virtual_)
9577                                                 check_this = TRUE;
9578                                         virtual_ = 0;
9579                                 }
9580                         }
9581
9582                         if (pass_imt_from_rgctx) {
9583                                 g_assert (!pass_vtable);
9584
9585                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9586                                         cmethod, MONO_RGCTX_INFO_METHOD);
9587                         }
9588
9589                         if (check_this)
9590                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9591
9592                         /* Calling virtual generic methods */
9593                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9594                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9595                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9596                             fsig->generic_param_count &&
9597                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9598                                 !cfg->llvm_only) {
9599                                 MonoInst *this_temp, *this_arg_temp, *store;
9600                                 MonoInst *iargs [4];
9601
9602                                 g_assert (fsig->is_inflated);
9603
9604                                 /* Prevent inlining of methods that contain indirect calls */
9605                                 INLINE_FAILURE ("virtual generic call");
9606
9607                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9608                                         GSHAREDVT_FAILURE (*ip);
9609
9610                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9611                                         g_assert (!imt_arg);
9612                                         if (!context_used)
9613                                                 g_assert (cmethod->is_inflated);
9614                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9615                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9616                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9617                                 } else {
9618                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9619                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9620                                         MONO_ADD_INS (cfg->cbb, store);
9621
9622                                         /* FIXME: This should be a managed pointer */
9623                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9624
9625                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9626                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9627                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9628                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9629                                         addr = mono_emit_jit_icall (cfg,
9630                                                                                                 mono_helper_compile_generic_method, iargs);
9631
9632                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9633
9634                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9635                                 }
9636
9637                                 goto call_end;
9638                         }
9639
9640                         /*
9641                          * Implement a workaround for the inherent races involved in locking:
9642                          * Monitor.Enter ()
9643                          * try {
9644                          * } finally {
9645                          *    Monitor.Exit ()
9646                          * }
9647                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9648                          * try block, the Exit () won't be executed, see:
9649                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9650                          * To work around this, we extend such try blocks to include the last x bytes
9651                          * of the Monitor.Enter () call.
9652                          */
9653                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9654                                 MonoBasicBlock *tbb;
9655
9656                                 GET_BBLOCK (cfg, tbb, ip + 5);
9657                                 /*
9658                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9659                                  * from Monitor.Enter like ArgumentNullException.
9660                                  */
9661                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9662                                         /* Mark this bblock as needing to be extended */
9663                                         tbb->extend_try_block = TRUE;
9664                                 }
9665                         }
9666
9667                         /* Conversion to a JIT intrinsic */
9668                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9669                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9670                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9671                                         emit_widen = FALSE;
9672                                 }
9673                                 goto call_end;
9674                         }
9675
9676                         /* Inlining */
9677                         if ((cfg->opt & MONO_OPT_INLINE) &&
9678                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9679                             mono_method_check_inlining (cfg, cmethod)) {
9680                                 int costs;
9681                                 gboolean always = FALSE;
9682
9683                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9684                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9685                                         /* Prevent inlining of methods that call wrappers */
9686                                         INLINE_FAILURE ("wrapper call");
9687                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9688                                         always = TRUE;
9689                                 }
9690
9691                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9692                                 if (costs) {
9693                                         cfg->real_offset += 5;
9694
9695                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9696                                                 /* *sp is already set by inline_method */
9697                                                 sp++;
9698                                                 push_res = FALSE;
9699                                         }
9700
9701                                         inline_costs += costs;
9702
9703                                         goto call_end;
9704                                 }
9705                         }
9706
9707                         /* Tail recursion elimination */
9708                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9709                                 gboolean has_vtargs = FALSE;
9710                                 int i;
9711
9712                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9713                                 INLINE_FAILURE ("tail call");
9714
9715                                 /* keep it simple */
9716                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9717                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9718                                                 has_vtargs = TRUE;
9719                                 }
9720
9721                                 if (!has_vtargs) {
9722                                         for (i = 0; i < n; ++i)
9723                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9724                                         MONO_INST_NEW (cfg, ins, OP_BR);
9725                                         MONO_ADD_INS (cfg->cbb, ins);
9726                                         tblock = start_bblock->out_bb [0];
9727                                         link_bblock (cfg, cfg->cbb, tblock);
9728                                         ins->inst_target_bb = tblock;
9729                                         start_new_bblock = 1;
9730
9731                                         /* skip the CEE_RET, too */
9732                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9733                                                 skip_ret = TRUE;
9734                                         push_res = FALSE;
9735                                         goto call_end;
9736                                 }
9737                         }
9738
9739                         inline_costs += 10 * num_calls++;
9740
9741                         /*
9742                          * Making generic calls out of gsharedvt methods.
9743                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9744                          * patching gshared method addresses into a gsharedvt method.
9745                          */
9746                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9747                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9748                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9749                                 MonoRgctxInfoType info_type;
9750
9751                                 if (virtual_) {
9752                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9753                                                 //GSHAREDVT_FAILURE (*ip);
9754                                         // disable for possible remoting calls
9755                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9756                                                 GSHAREDVT_FAILURE (*ip);
9757                                         if (fsig->generic_param_count) {
9758                                                 /* virtual generic call */
9759                                                 g_assert (!imt_arg);
9760                                                 /* Same as the virtual generic case above */
9761                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9762                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9763                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9764                                                 vtable_arg = NULL;
9765                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9766                                                 /* This can happen when we call a fully instantiated iface method */
9767                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9768                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9769                                                 vtable_arg = NULL;
9770                                         }
9771                                 }
9772
9773                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9774                                         keep_this_alive = sp [0];
9775
9776                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9777                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9778                                 else
9779                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9780                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9781
9782                                 if (cfg->llvm_only) {
9783                                         // FIXME: Avoid initializing vtable_arg
9784                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9785                                 } else {
9786                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9787                                 }
9788                                 goto call_end;
9789                         }
9790
9791                         /* Generic sharing */
9792
9793                         /*
9794                          * Use this if the callee is gsharedvt sharable too, since
9795                          * at runtime we might find an instantiation so the call cannot
9796                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9797                          */
9798                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9799                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9800                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9801                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9802                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9803                                 INLINE_FAILURE ("gshared");
9804
9805                                 g_assert (cfg->gshared && cmethod);
9806                                 g_assert (!addr);
9807
9808                                 /*
9809                                  * We are compiling a call to a
9810                                  * generic method from shared code,
9811                                  * which means that we have to look up
9812                                  * the method in the rgctx and do an
9813                                  * indirect call.
9814                                  */
9815                                 if (fsig->hasthis)
9816                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9817
9818                                 if (cfg->llvm_only) {
9819                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9820                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9821                                         else
9822                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9823                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9824                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9825                                 } else {
9826                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9827                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9828                                 }
9829                                 goto call_end;
9830                         }
9831
9832                         /* Direct calls to icalls */
9833                         if (direct_icall) {
9834                                 MonoMethod *wrapper;
9835                                 int costs;
9836
9837                                 /* Inline the wrapper */
9838                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9839
9840                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9841                                 g_assert (costs > 0);
9842                                 cfg->real_offset += 5;
9843
9844                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9845                                         /* *sp is already set by inline_method */
9846                                         sp++;
9847                                         push_res = FALSE;
9848                                 }
9849
9850                                 inline_costs += costs;
9851
9852                                 goto call_end;
9853                         }
9854
9855                         /* Array methods */
9856                         if (array_rank) {
9857                                 MonoInst *addr;
9858
9859                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9860                                         MonoInst *val = sp [fsig->param_count];
9861
9862                                         if (val->type == STACK_OBJ) {
9863                                                 MonoInst *iargs [2];
9864
9865                                                 iargs [0] = sp [0];
9866                                                 iargs [1] = val;
9867
9868                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9869                                         }
9870
9871                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9872                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9873                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9874                                                 emit_write_barrier (cfg, addr, val);
9875                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9876                                                 GSHAREDVT_FAILURE (*ip);
9877                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9878                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9879
9880                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9881                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9882                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9883                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9884                                         CHECK_TYPELOAD (cmethod->klass);
9885
9886                                         readonly = FALSE;
9887                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9888                                         ins = addr;
9889                                 } else {
9890                                         g_assert_not_reached ();
9891                                 }
9892
9893                                 emit_widen = FALSE;
9894                                 goto call_end;
9895                         }
9896
9897                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9898                         if (ins)
9899                                 goto call_end;
9900
9901                         /* Tail prefix / tail call optimization */
9902
9903                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9904                         /* FIXME: runtime generic context pointer for jumps? */
9905                         /* FIXME: handle this for generic sharing eventually */
9906                         if ((ins_flag & MONO_INST_TAILCALL) &&
9907                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9908                                 supported_tail_call = TRUE;
9909
9910                         if (supported_tail_call) {
9911                                 MonoCallInst *call;
9912
9913                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9914                                 INLINE_FAILURE ("tail call");
9915
9916                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9917
9918                                 if (cfg->backend->have_op_tail_call) {
9919                                         /* Handle tail calls similarly to normal calls */
9920                                         tail_call = TRUE;
9921                                 } else {
9922                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9923
9924                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9925                                         call->tail_call = TRUE;
9926                                         call->method = cmethod;
9927                                         call->signature = mono_method_signature (cmethod);
9928
9929                                         /*
9930                                          * We implement tail calls by storing the actual arguments into the
9931                                          * argument variables, then emitting a CEE_JMP.
9932                                          */
9933                                         for (i = 0; i < n; ++i) {
9934                                                 /* Prevent argument from being register allocated */
9935                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9936                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9937                                         }
9938                                         ins = (MonoInst*)call;
9939                                         ins->inst_p0 = cmethod;
9940                                         ins->inst_p1 = arg_array [0];
9941                                         MONO_ADD_INS (cfg->cbb, ins);
9942                                         link_bblock (cfg, cfg->cbb, end_bblock);
9943                                         start_new_bblock = 1;
9944
9945                                         // FIXME: Eliminate unreachable epilogs
9946
9947                                         /*
9948                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9949                                          * only reachable from this call.
9950                                          */
9951                                         GET_BBLOCK (cfg, tblock, ip + 5);
9952                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9953                                                 skip_ret = TRUE;
9954                                         push_res = FALSE;
9955
9956                                         goto call_end;
9957                                 }
9958                         }
9959
9960                         /*
9961                          * Synchronized wrappers.
9962                          * Its hard to determine where to replace a method with its synchronized
9963                          * wrapper without causing an infinite recursion. The current solution is
9964                          * to add the synchronized wrapper in the trampolines, and to
9965                          * change the called method to a dummy wrapper, and resolve that wrapper
9966                          * to the real method in mono_jit_compile_method ().
9967                          */
9968                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9969                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9970                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9971                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9972                         }
9973
9974                         /*
9975                          * Virtual calls in llvm-only mode.
9976                          */
9977                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9978                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9979                                 goto call_end;
9980                         }
9981
9982                         /* Common call */
9983                         INLINE_FAILURE ("call");
9984                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9985                                                                                           imt_arg, vtable_arg);
9986
9987                         if (tail_call && !cfg->llvm_only) {
9988                                 link_bblock (cfg, cfg->cbb, end_bblock);
9989                                 start_new_bblock = 1;
9990
9991                                 // FIXME: Eliminate unreachable epilogs
9992
9993                                 /*
9994                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9995                                  * only reachable from this call.
9996                                  */
9997                                 GET_BBLOCK (cfg, tblock, ip + 5);
9998                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9999                                         skip_ret = TRUE;
10000                                 push_res = FALSE;
10001                         }
10002
10003                         call_end:
10004
10005                         /* End of call, INS should contain the result of the call, if any */
10006
10007                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10008                                 g_assert (ins);
10009                                 if (emit_widen)
10010                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10011                                 else
10012                                         *sp++ = ins;
10013                         }
10014
10015                         if (keep_this_alive) {
10016                                 MonoInst *dummy_use;
10017
10018                                 /* See mono_emit_method_call_full () */
10019                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10020                         }
10021
10022                         CHECK_CFG_EXCEPTION;
10023
10024                         ip += 5;
10025                         if (skip_ret) {
10026                                 g_assert (*ip == CEE_RET);
10027                                 ip += 1;
10028                         }
10029                         ins_flag = 0;
10030                         constrained_class = NULL;
10031                         if (need_seq_point)
10032                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10033                         break;
10034                 }
10035                 case CEE_RET:
10036                         if (cfg->method != method) {
10037                                 /* return from inlined method */
10038                                 /*
10039                                  * If in_count == 0, that means the ret is unreachable due to
10040                                  * being preceeded by a throw. In that case, inline_method () will
10041                                  * handle setting the return value
10042                                  * (test case: test_0_inline_throw ()).
10043                                  */
10044                                 if (return_var && cfg->cbb->in_count) {
10045                                         MonoType *ret_type = mono_method_signature (method)->ret;
10046
10047                                         MonoInst *store;
10048                                         CHECK_STACK (1);
10049                                         --sp;
10050
10051                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10052                                                 UNVERIFIED;
10053
10054                                         //g_assert (returnvar != -1);
10055                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10056                                         cfg->ret_var_set = TRUE;
10057                                 }
10058                         } else {
10059                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10060
10061                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10062                                         emit_pop_lmf (cfg);
10063
10064                                 if (cfg->ret) {
10065                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10066
10067                                         if (seq_points && !sym_seq_points) {
10068                                                 /*
10069                                                  * Place a seq point here too even through the IL stack is not
10070                                                  * empty, so a step over on
10071                                                  * call <FOO>
10072                                                  * ret
10073                                                  * will work correctly.
10074                                                  */
10075                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10076                                                 MONO_ADD_INS (cfg->cbb, ins);
10077                                         }
10078
10079                                         g_assert (!return_var);
10080                                         CHECK_STACK (1);
10081                                         --sp;
10082
10083                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10084                                                 UNVERIFIED;
10085
10086                                         emit_setret (cfg, *sp);
10087                                 }
10088                         }
10089                         if (sp != stack_start)
10090                                 UNVERIFIED;
10091                         MONO_INST_NEW (cfg, ins, OP_BR);
10092                         ip++;
10093                         ins->inst_target_bb = end_bblock;
10094                         MONO_ADD_INS (cfg->cbb, ins);
10095                         link_bblock (cfg, cfg->cbb, end_bblock);
10096                         start_new_bblock = 1;
10097                         break;
10098                 case CEE_BR_S:
10099                         CHECK_OPSIZE (2);
10100                         MONO_INST_NEW (cfg, ins, OP_BR);
10101                         ip++;
10102                         target = ip + 1 + (signed char)(*ip);
10103                         ++ip;
10104                         GET_BBLOCK (cfg, tblock, target);
10105                         link_bblock (cfg, cfg->cbb, tblock);
10106                         ins->inst_target_bb = tblock;
10107                         if (sp != stack_start) {
10108                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10109                                 sp = stack_start;
10110                                 CHECK_UNVERIFIABLE (cfg);
10111                         }
10112                         MONO_ADD_INS (cfg->cbb, ins);
10113                         start_new_bblock = 1;
10114                         inline_costs += BRANCH_COST;
10115                         break;
10116                 case CEE_BEQ_S:
10117                 case CEE_BGE_S:
10118                 case CEE_BGT_S:
10119                 case CEE_BLE_S:
10120                 case CEE_BLT_S:
10121                 case CEE_BNE_UN_S:
10122                 case CEE_BGE_UN_S:
10123                 case CEE_BGT_UN_S:
10124                 case CEE_BLE_UN_S:
10125                 case CEE_BLT_UN_S:
10126                         CHECK_OPSIZE (2);
10127                         CHECK_STACK (2);
10128                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10129                         ip++;
10130                         target = ip + 1 + *(signed char*)ip;
10131                         ip++;
10132
10133                         ADD_BINCOND (NULL);
10134
10135                         sp = stack_start;
10136                         inline_costs += BRANCH_COST;
10137                         break;
10138                 case CEE_BR:
10139                         CHECK_OPSIZE (5);
10140                         MONO_INST_NEW (cfg, ins, OP_BR);
10141                         ip++;
10142
10143                         target = ip + 4 + (gint32)read32(ip);
10144                         ip += 4;
10145                         GET_BBLOCK (cfg, tblock, target);
10146                         link_bblock (cfg, cfg->cbb, tblock);
10147                         ins->inst_target_bb = tblock;
10148                         if (sp != stack_start) {
10149                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10150                                 sp = stack_start;
10151                                 CHECK_UNVERIFIABLE (cfg);
10152                         }
10153
10154                         MONO_ADD_INS (cfg->cbb, ins);
10155
10156                         start_new_bblock = 1;
10157                         inline_costs += BRANCH_COST;
10158                         break;
10159                 case CEE_BRFALSE_S:
10160                 case CEE_BRTRUE_S:
10161                 case CEE_BRFALSE:
10162                 case CEE_BRTRUE: {
10163                         MonoInst *cmp;
10164                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10165                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10166                         guint32 opsize = is_short ? 1 : 4;
10167
10168                         CHECK_OPSIZE (opsize);
10169                         CHECK_STACK (1);
10170                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10171                                 UNVERIFIED;
10172                         ip ++;
10173                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10174                         ip += opsize;
10175
10176                         sp--;
10177
10178                         GET_BBLOCK (cfg, tblock, target);
10179                         link_bblock (cfg, cfg->cbb, tblock);
10180                         GET_BBLOCK (cfg, tblock, ip);
10181                         link_bblock (cfg, cfg->cbb, tblock);
10182
10183                         if (sp != stack_start) {
10184                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10185                                 CHECK_UNVERIFIABLE (cfg);
10186                         }
10187
10188                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10189                         cmp->sreg1 = sp [0]->dreg;
10190                         type_from_op (cfg, cmp, sp [0], NULL);
10191                         CHECK_TYPE (cmp);
10192
10193 #if SIZEOF_REGISTER == 4
10194                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10195                                 /* Convert it to OP_LCOMPARE */
10196                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10197                                 ins->type = STACK_I8;
10198                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10199                                 ins->inst_l = 0;
10200                                 MONO_ADD_INS (cfg->cbb, ins);
10201                                 cmp->opcode = OP_LCOMPARE;
10202                                 cmp->sreg2 = ins->dreg;
10203                         }
10204 #endif
10205                         MONO_ADD_INS (cfg->cbb, cmp);
10206
10207                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10208                         type_from_op (cfg, ins, sp [0], NULL);
10209                         MONO_ADD_INS (cfg->cbb, ins);
10210                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10211                         GET_BBLOCK (cfg, tblock, target);
10212                         ins->inst_true_bb = tblock;
10213                         GET_BBLOCK (cfg, tblock, ip);
10214                         ins->inst_false_bb = tblock;
10215                         start_new_bblock = 2;
10216
10217                         sp = stack_start;
10218                         inline_costs += BRANCH_COST;
10219                         break;
10220                 }
10221                 case CEE_BEQ:
10222                 case CEE_BGE:
10223                 case CEE_BGT:
10224                 case CEE_BLE:
10225                 case CEE_BLT:
10226                 case CEE_BNE_UN:
10227                 case CEE_BGE_UN:
10228                 case CEE_BGT_UN:
10229                 case CEE_BLE_UN:
10230                 case CEE_BLT_UN:
10231                         CHECK_OPSIZE (5);
10232                         CHECK_STACK (2);
10233                         MONO_INST_NEW (cfg, ins, *ip);
10234                         ip++;
10235                         target = ip + 4 + (gint32)read32(ip);
10236                         ip += 4;
10237
10238                         ADD_BINCOND (NULL);
10239
10240                         sp = stack_start;
10241                         inline_costs += BRANCH_COST;
10242                         break;
10243                 case CEE_SWITCH: {
10244                         MonoInst *src1;
10245                         MonoBasicBlock **targets;
10246                         MonoBasicBlock *default_bblock;
10247                         MonoJumpInfoBBTable *table;
10248                         int offset_reg = alloc_preg (cfg);
10249                         int target_reg = alloc_preg (cfg);
10250                         int table_reg = alloc_preg (cfg);
10251                         int sum_reg = alloc_preg (cfg);
10252                         gboolean use_op_switch;
10253
10254                         CHECK_OPSIZE (5);
10255                         CHECK_STACK (1);
10256                         n = read32 (ip + 1);
10257                         --sp;
10258                         src1 = sp [0];
10259                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10260                                 UNVERIFIED;
10261
10262                         ip += 5;
10263                         CHECK_OPSIZE (n * sizeof (guint32));
10264                         target = ip + n * sizeof (guint32);
10265
10266                         GET_BBLOCK (cfg, default_bblock, target);
10267                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10268
10269                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10270                         for (i = 0; i < n; ++i) {
10271                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10272                                 targets [i] = tblock;
10273                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10274                                 ip += 4;
10275                         }
10276
10277                         if (sp != stack_start) {
10278                                 /*
10279                                  * Link the current bb with the targets as well, so handle_stack_args
10280                                  * will set their in_stack correctly.
10281                                  */
10282                                 link_bblock (cfg, cfg->cbb, default_bblock);
10283                                 for (i = 0; i < n; ++i)
10284                                         link_bblock (cfg, cfg->cbb, targets [i]);
10285
10286                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10287                                 sp = stack_start;
10288                                 CHECK_UNVERIFIABLE (cfg);
10289
10290                                 /* Undo the links */
10291                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10292                                 for (i = 0; i < n; ++i)
10293                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10294                         }
10295
10296                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10297                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10298
10299                         for (i = 0; i < n; ++i)
10300                                 link_bblock (cfg, cfg->cbb, targets [i]);
10301
10302                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10303                         table->table = targets;
10304                         table->table_size = n;
10305
10306                         use_op_switch = FALSE;
10307 #ifdef TARGET_ARM
10308                         /* ARM implements SWITCH statements differently */
10309                         /* FIXME: Make it use the generic implementation */
10310                         if (!cfg->compile_aot)
10311                                 use_op_switch = TRUE;
10312 #endif
10313
10314                         if (COMPILE_LLVM (cfg))
10315                                 use_op_switch = TRUE;
10316
10317                         cfg->cbb->has_jump_table = 1;
10318
10319                         if (use_op_switch) {
10320                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10321                                 ins->sreg1 = src1->dreg;
10322                                 ins->inst_p0 = table;
10323                                 ins->inst_many_bb = targets;
10324                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10325                                 MONO_ADD_INS (cfg->cbb, ins);
10326                         } else {
10327                                 if (sizeof (gpointer) == 8)
10328                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10329                                 else
10330                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10331
10332 #if SIZEOF_REGISTER == 8
10333                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10334                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10335 #endif
10336
10337                                 if (cfg->compile_aot) {
10338                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10339                                 } else {
10340                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10341                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10342                                         ins->inst_p0 = table;
10343                                         ins->dreg = table_reg;
10344                                         MONO_ADD_INS (cfg->cbb, ins);
10345                                 }
10346
10347                                 /* FIXME: Use load_memindex */
10348                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10349                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10350                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10351                         }
10352                         start_new_bblock = 1;
10353                         inline_costs += (BRANCH_COST * 2);
10354                         break;
10355                 }
10356                 case CEE_LDIND_I1:
10357                 case CEE_LDIND_U1:
10358                 case CEE_LDIND_I2:
10359                 case CEE_LDIND_U2:
10360                 case CEE_LDIND_I4:
10361                 case CEE_LDIND_U4:
10362                 case CEE_LDIND_I8:
10363                 case CEE_LDIND_I:
10364                 case CEE_LDIND_R4:
10365                 case CEE_LDIND_R8:
10366                 case CEE_LDIND_REF:
10367                         CHECK_STACK (1);
10368                         --sp;
10369
10370                         switch (*ip) {
10371                         case CEE_LDIND_R4:
10372                         case CEE_LDIND_R8:
10373                                 dreg = alloc_freg (cfg);
10374                                 break;
10375                         case CEE_LDIND_I8:
10376                                 dreg = alloc_lreg (cfg);
10377                                 break;
10378                         case CEE_LDIND_REF:
10379                                 dreg = alloc_ireg_ref (cfg);
10380                                 break;
10381                         default:
10382                                 dreg = alloc_preg (cfg);
10383                         }
10384
10385                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10386                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10387                         if (*ip == CEE_LDIND_R4)
10388                                 ins->type = cfg->r4_stack_type;
10389                         ins->flags |= ins_flag;
10390                         MONO_ADD_INS (cfg->cbb, ins);
10391                         *sp++ = ins;
10392                         if (ins_flag & MONO_INST_VOLATILE) {
10393                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10394                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10395                         }
10396                         ins_flag = 0;
10397                         ++ip;
10398                         break;
10399                 case CEE_STIND_REF:
10400                 case CEE_STIND_I1:
10401                 case CEE_STIND_I2:
10402                 case CEE_STIND_I4:
10403                 case CEE_STIND_I8:
10404                 case CEE_STIND_R4:
10405                 case CEE_STIND_R8:
10406                 case CEE_STIND_I:
10407                         CHECK_STACK (2);
10408                         sp -= 2;
10409
10410                         if (ins_flag & MONO_INST_VOLATILE) {
10411                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10412                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10413                         }
10414
10415                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10416                         ins->flags |= ins_flag;
10417                         ins_flag = 0;
10418
10419                         MONO_ADD_INS (cfg->cbb, ins);
10420
10421                         if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0)))
10422                                 emit_write_barrier (cfg, sp [0], sp [1]);
10423
10424                         inline_costs += 1;
10425                         ++ip;
10426                         break;
10427
10428                 case CEE_MUL:
10429                         CHECK_STACK (2);
10430
10431                         MONO_INST_NEW (cfg, ins, (*ip));
10432                         sp -= 2;
10433                         ins->sreg1 = sp [0]->dreg;
10434                         ins->sreg2 = sp [1]->dreg;
10435                         type_from_op (cfg, ins, sp [0], sp [1]);
10436                         CHECK_TYPE (ins);
10437                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10438
10439                         /* Use the immediate opcodes if possible */
10440                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10441                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10442                                 if (imm_opcode != -1) {
10443                                         ins->opcode = imm_opcode;
10444                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10445                                         ins->sreg2 = -1;
10446
10447                                         NULLIFY_INS (sp [1]);
10448                                 }
10449                         }
10450
10451                         MONO_ADD_INS ((cfg)->cbb, (ins));
10452
10453                         *sp++ = mono_decompose_opcode (cfg, ins);
10454                         ip++;
10455                         break;
10456                 case CEE_ADD:
10457                 case CEE_SUB:
10458                 case CEE_DIV:
10459                 case CEE_DIV_UN:
10460                 case CEE_REM:
10461                 case CEE_REM_UN:
10462                 case CEE_AND:
10463                 case CEE_OR:
10464                 case CEE_XOR:
10465                 case CEE_SHL:
10466                 case CEE_SHR:
10467                 case CEE_SHR_UN:
10468                         CHECK_STACK (2);
10469
10470                         MONO_INST_NEW (cfg, ins, (*ip));
10471                         sp -= 2;
10472                         ins->sreg1 = sp [0]->dreg;
10473                         ins->sreg2 = sp [1]->dreg;
10474                         type_from_op (cfg, ins, sp [0], sp [1]);
10475                         CHECK_TYPE (ins);
10476                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10477                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10478
10479                         /* FIXME: Pass opcode to is_inst_imm */
10480
10481                         /* Use the immediate opcodes if possible */
10482                         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)) {
10483                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10484                                 if (imm_opcode != -1) {
10485                                         ins->opcode = imm_opcode;
10486                                         if (sp [1]->opcode == OP_I8CONST) {
10487 #if SIZEOF_REGISTER == 8
10488                                                 ins->inst_imm = sp [1]->inst_l;
10489 #else
10490                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10491                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10492 #endif
10493                                         }
10494                                         else
10495                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10496                                         ins->sreg2 = -1;
10497
10498                                         /* Might be followed by an instruction added by add_widen_op */
10499                                         if (sp [1]->next == NULL)
10500                                                 NULLIFY_INS (sp [1]);
10501                                 }
10502                         }
10503                         MONO_ADD_INS ((cfg)->cbb, (ins));
10504
10505                         *sp++ = mono_decompose_opcode (cfg, ins);
10506                         ip++;
10507                         break;
10508                 case CEE_NEG:
10509                 case CEE_NOT:
10510                 case CEE_CONV_I1:
10511                 case CEE_CONV_I2:
10512                 case CEE_CONV_I4:
10513                 case CEE_CONV_R4:
10514                 case CEE_CONV_R8:
10515                 case CEE_CONV_U4:
10516                 case CEE_CONV_I8:
10517                 case CEE_CONV_U8:
10518                 case CEE_CONV_OVF_I8:
10519                 case CEE_CONV_OVF_U8:
10520                 case CEE_CONV_R_UN:
10521                         CHECK_STACK (1);
10522
10523                         /* Special case this earlier so we have long constants in the IR */
10524                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10525                                 int data = sp [-1]->inst_c0;
10526                                 sp [-1]->opcode = OP_I8CONST;
10527                                 sp [-1]->type = STACK_I8;
10528 #if SIZEOF_REGISTER == 8
10529                                 if ((*ip) == CEE_CONV_U8)
10530                                         sp [-1]->inst_c0 = (guint32)data;
10531                                 else
10532                                         sp [-1]->inst_c0 = data;
10533 #else
10534                                 sp [-1]->inst_ls_word = data;
10535                                 if ((*ip) == CEE_CONV_U8)
10536                                         sp [-1]->inst_ms_word = 0;
10537                                 else
10538                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10539 #endif
10540                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10541                         }
10542                         else {
10543                                 ADD_UNOP (*ip);
10544                         }
10545                         ip++;
10546                         break;
10547                 case CEE_CONV_OVF_I4:
10548                 case CEE_CONV_OVF_I1:
10549                 case CEE_CONV_OVF_I2:
10550                 case CEE_CONV_OVF_I:
10551                 case CEE_CONV_OVF_U:
10552                         CHECK_STACK (1);
10553
10554                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10555                                 ADD_UNOP (CEE_CONV_OVF_I8);
10556                                 ADD_UNOP (*ip);
10557                         } else {
10558                                 ADD_UNOP (*ip);
10559                         }
10560                         ip++;
10561                         break;
10562                 case CEE_CONV_OVF_U1:
10563                 case CEE_CONV_OVF_U2:
10564                 case CEE_CONV_OVF_U4:
10565                         CHECK_STACK (1);
10566
10567                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10568                                 ADD_UNOP (CEE_CONV_OVF_U8);
10569                                 ADD_UNOP (*ip);
10570                         } else {
10571                                 ADD_UNOP (*ip);
10572                         }
10573                         ip++;
10574                         break;
10575                 case CEE_CONV_OVF_I1_UN:
10576                 case CEE_CONV_OVF_I2_UN:
10577                 case CEE_CONV_OVF_I4_UN:
10578                 case CEE_CONV_OVF_I8_UN:
10579                 case CEE_CONV_OVF_U1_UN:
10580                 case CEE_CONV_OVF_U2_UN:
10581                 case CEE_CONV_OVF_U4_UN:
10582                 case CEE_CONV_OVF_U8_UN:
10583                 case CEE_CONV_OVF_I_UN:
10584                 case CEE_CONV_OVF_U_UN:
10585                 case CEE_CONV_U2:
10586                 case CEE_CONV_U1:
10587                 case CEE_CONV_I:
10588                 case CEE_CONV_U:
10589                         CHECK_STACK (1);
10590                         ADD_UNOP (*ip);
10591                         CHECK_CFG_EXCEPTION;
10592                         ip++;
10593                         break;
10594                 case CEE_ADD_OVF:
10595                 case CEE_ADD_OVF_UN:
10596                 case CEE_MUL_OVF:
10597                 case CEE_MUL_OVF_UN:
10598                 case CEE_SUB_OVF:
10599                 case CEE_SUB_OVF_UN:
10600                         CHECK_STACK (2);
10601                         ADD_BINOP (*ip);
10602                         ip++;
10603                         break;
10604                 case CEE_CPOBJ:
10605                         GSHAREDVT_FAILURE (*ip);
10606                         CHECK_OPSIZE (5);
10607                         CHECK_STACK (2);
10608                         token = read32 (ip + 1);
10609                         klass = mini_get_class (method, token, generic_context);
10610                         CHECK_TYPELOAD (klass);
10611                         sp -= 2;
10612                         if (generic_class_is_reference_type (cfg, klass)) {
10613                                 MonoInst *store, *load;
10614                                 int dreg = alloc_ireg_ref (cfg);
10615
10616                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10617                                 load->flags |= ins_flag;
10618                                 MONO_ADD_INS (cfg->cbb, load);
10619
10620                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10621                                 store->flags |= ins_flag;
10622                                 MONO_ADD_INS (cfg->cbb, store);
10623
10624                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10625                                         emit_write_barrier (cfg, sp [0], sp [1]);
10626                         } else {
10627                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10628                         }
10629                         ins_flag = 0;
10630                         ip += 5;
10631                         break;
10632                 case CEE_LDOBJ: {
10633                         int loc_index = -1;
10634                         int stloc_len = 0;
10635
10636                         CHECK_OPSIZE (5);
10637                         CHECK_STACK (1);
10638                         --sp;
10639                         token = read32 (ip + 1);
10640                         klass = mini_get_class (method, token, generic_context);
10641                         CHECK_TYPELOAD (klass);
10642
10643                         /* Optimize the common ldobj+stloc combination */
10644                         switch (ip [5]) {
10645                         case CEE_STLOC_S:
10646                                 loc_index = ip [6];
10647                                 stloc_len = 2;
10648                                 break;
10649                         case CEE_STLOC_0:
10650                         case CEE_STLOC_1:
10651                         case CEE_STLOC_2:
10652                         case CEE_STLOC_3:
10653                                 loc_index = ip [5] - CEE_STLOC_0;
10654                                 stloc_len = 1;
10655                                 break;
10656                         default:
10657                                 break;
10658                         }
10659
10660                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10661                                 CHECK_LOCAL (loc_index);
10662
10663                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10664                                 ins->dreg = cfg->locals [loc_index]->dreg;
10665                                 ins->flags |= ins_flag;
10666                                 ip += 5;
10667                                 ip += stloc_len;
10668                                 if (ins_flag & MONO_INST_VOLATILE) {
10669                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10670                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10671                                 }
10672                                 ins_flag = 0;
10673                                 break;
10674                         }
10675
10676                         /* Optimize the ldobj+stobj combination */
10677                         /* The reference case ends up being a load+store anyway */
10678                         /* Skip this if the operation is volatile. */
10679                         if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass) && !(ins_flag & MONO_INST_VOLATILE)) {
10680                                 CHECK_STACK (1);
10681
10682                                 sp --;
10683
10684                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10685
10686                                 ip += 5 + 5;
10687                                 ins_flag = 0;
10688                                 break;
10689                         }
10690
10691                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10692                         ins->flags |= ins_flag;
10693                         *sp++ = ins;
10694
10695                         if (ins_flag & MONO_INST_VOLATILE) {
10696                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10697                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10698                         }
10699
10700                         ip += 5;
10701                         ins_flag = 0;
10702                         inline_costs += 1;
10703                         break;
10704                 }
10705                 case CEE_LDSTR:
10706                         CHECK_STACK_OVF (1);
10707                         CHECK_OPSIZE (5);
10708                         n = read32 (ip + 1);
10709
10710                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10711                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10712                                 ins->type = STACK_OBJ;
10713                                 *sp = ins;
10714                         }
10715                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10716                                 MonoInst *iargs [1];
10717                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10718
10719                                 if (cfg->compile_aot)
10720                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10721                                 else
10722                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10723                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10724                         } else {
10725                                 if (cfg->opt & MONO_OPT_SHARED) {
10726                                         MonoInst *iargs [3];
10727
10728                                         if (cfg->compile_aot) {
10729                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10730                                         }
10731                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10732                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10733                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10734                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10735                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10736                                 } else {
10737                                         if (cfg->cbb->out_of_line) {
10738                                                 MonoInst *iargs [2];
10739
10740                                                 if (image == mono_defaults.corlib) {
10741                                                         /*
10742                                                          * Avoid relocations in AOT and save some space by using a
10743                                                          * version of helper_ldstr specialized to mscorlib.
10744                                                          */
10745                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10746                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10747                                                 } else {
10748                                                         /* Avoid creating the string object */
10749                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10750                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10751                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10752                                                 }
10753                                         }
10754                                         else
10755                                         if (cfg->compile_aot) {
10756                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10757                                                 *sp = ins;
10758                                                 MONO_ADD_INS (cfg->cbb, ins);
10759                                         }
10760                                         else {
10761                                                 NEW_PCONST (cfg, ins, NULL);
10762                                                 ins->type = STACK_OBJ;
10763                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10764                                                 if (!ins->inst_p0)
10765                                                         OUT_OF_MEMORY_FAILURE;
10766
10767                                                 *sp = ins;
10768                                                 MONO_ADD_INS (cfg->cbb, ins);
10769                                         }
10770                                 }
10771                         }
10772
10773                         sp++;
10774                         ip += 5;
10775                         break;
10776                 case CEE_NEWOBJ: {
10777                         MonoInst *iargs [2];
10778                         MonoMethodSignature *fsig;
10779                         MonoInst this_ins;
10780                         MonoInst *alloc;
10781                         MonoInst *vtable_arg = NULL;
10782
10783                         CHECK_OPSIZE (5);
10784                         token = read32 (ip + 1);
10785                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10786                         CHECK_CFG_ERROR;
10787
10788                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10789                         CHECK_CFG_ERROR;
10790
10791                         mono_save_token_info (cfg, image, token, cmethod);
10792
10793                         if (!mono_class_init (cmethod->klass))
10794                                 TYPE_LOAD_ERROR (cmethod->klass);
10795
10796                         context_used = mini_method_check_context_used (cfg, cmethod);
10797
10798                         if (mono_security_core_clr_enabled ())
10799                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10800
10801                         if (cfg->gshared && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
10802                                 emit_class_init (cfg, cmethod->klass);
10803                                 CHECK_TYPELOAD (cmethod->klass);
10804                         }
10805
10806                         /*
10807                         if (cfg->gsharedvt) {
10808                                 if (mini_is_gsharedvt_variable_signature (sig))
10809                                         GSHAREDVT_FAILURE (*ip);
10810                         }
10811                         */
10812
10813                         n = fsig->param_count;
10814                         CHECK_STACK (n);
10815
10816                         /*
10817                          * Generate smaller code for the common newobj <exception> instruction in
10818                          * argument checking code.
10819                          */
10820                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10821                                 is_exception_class (cmethod->klass) && n <= 2 &&
10822                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10823                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10824                                 MonoInst *iargs [3];
10825
10826                                 sp -= n;
10827
10828                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10829                                 switch (n) {
10830                                 case 0:
10831                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10832                                         break;
10833                                 case 1:
10834                                         iargs [1] = sp [0];
10835                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10836                                         break;
10837                                 case 2:
10838                                         iargs [1] = sp [0];
10839                                         iargs [2] = sp [1];
10840                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10841                                         break;
10842                                 default:
10843                                         g_assert_not_reached ();
10844                                 }
10845
10846                                 ip += 5;
10847                                 inline_costs += 5;
10848                                 break;
10849                         }
10850
10851                         /* move the args to allow room for 'this' in the first position */
10852                         while (n--) {
10853                                 --sp;
10854                                 sp [1] = sp [0];
10855                         }
10856
10857                         /* check_call_signature () requires sp[0] to be set */
10858                         this_ins.type = STACK_OBJ;
10859                         sp [0] = &this_ins;
10860                         if (check_call_signature (cfg, fsig, sp))
10861                                 UNVERIFIED;
10862
10863                         iargs [0] = NULL;
10864
10865                         if (mini_class_is_system_array (cmethod->klass)) {
10866                                 *sp = emit_get_rgctx_method (cfg, context_used,
10867                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10868
10869                                 /* Avoid varargs in the common case */
10870                                 if (fsig->param_count == 1)
10871                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10872                                 else if (fsig->param_count == 2)
10873                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10874                                 else if (fsig->param_count == 3)
10875                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10876                                 else if (fsig->param_count == 4)
10877                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10878                                 else
10879                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10880                         } else if (cmethod->string_ctor) {
10881                                 g_assert (!context_used);
10882                                 g_assert (!vtable_arg);
10883                                 /* we simply pass a null pointer */
10884                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10885                                 /* now call the string ctor */
10886                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10887                         } else {
10888                                 if (cmethod->klass->valuetype) {
10889                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10890                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10891                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10892
10893                                         alloc = NULL;
10894
10895                                         /*
10896                                          * The code generated by mini_emit_virtual_call () expects
10897                                          * iargs [0] to be a boxed instance, but luckily the vcall
10898                                          * will be transformed into a normal call there.
10899                                          */
10900                                 } else if (context_used) {
10901                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10902                                         *sp = alloc;
10903                                 } else {
10904                                         MonoVTable *vtable = NULL;
10905
10906                                         if (!cfg->compile_aot)
10907                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10908                                         CHECK_TYPELOAD (cmethod->klass);
10909
10910                                         /*
10911                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10912                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10913                                          * As a workaround, we call class cctors before allocating objects.
10914                                          */
10915                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10916                                                 emit_class_init (cfg, cmethod->klass);
10917                                                 if (cfg->verbose_level > 2)
10918                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10919                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10920                                         }
10921
10922                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10923                                         *sp = alloc;
10924                                 }
10925                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10926
10927                                 if (alloc)
10928                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10929
10930                                 /* Now call the actual ctor */
10931                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10932                                 CHECK_CFG_EXCEPTION;
10933                         }
10934
10935                         if (alloc == NULL) {
10936                                 /* Valuetype */
10937                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10938                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10939                                 *sp++= ins;
10940                         } else {
10941                                 *sp++ = alloc;
10942                         }
10943
10944                         ip += 5;
10945                         inline_costs += 5;
10946                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10947                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10948                         break;
10949                 }
10950                 case CEE_CASTCLASS:
10951                         CHECK_STACK (1);
10952                         --sp;
10953                         CHECK_OPSIZE (5);
10954                         token = read32 (ip + 1);
10955                         klass = mini_get_class (method, token, generic_context);
10956                         CHECK_TYPELOAD (klass);
10957                         if (sp [0]->type != STACK_OBJ)
10958                                 UNVERIFIED;
10959
10960                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10961                         CHECK_CFG_EXCEPTION;
10962
10963                         *sp ++ = ins;
10964                         ip += 5;
10965                         break;
10966                 case CEE_ISINST: {
10967                         CHECK_STACK (1);
10968                         --sp;
10969                         CHECK_OPSIZE (5);
10970                         token = read32 (ip + 1);
10971                         klass = mini_get_class (method, token, generic_context);
10972                         CHECK_TYPELOAD (klass);
10973                         if (sp [0]->type != STACK_OBJ)
10974                                 UNVERIFIED;
10975
10976                         context_used = mini_class_check_context_used (cfg, klass);
10977
10978                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10979                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10980                                 MonoInst *args [3];
10981                                 int idx;
10982
10983                                 /* obj */
10984                                 args [0] = *sp;
10985
10986                                 /* klass */
10987                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10988
10989                                 /* inline cache*/
10990                                 idx = get_castclass_cache_idx (cfg);
10991                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
10992
10993                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
10994                                 ip += 5;
10995                                 inline_costs += 2;
10996                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
10997                                 MonoMethod *mono_isinst;
10998                                 MonoInst *iargs [1];
10999                                 int costs;
11000
11001                                 mono_isinst = mono_marshal_get_isinst (klass);
11002                                 iargs [0] = sp [0];
11003
11004                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11005                                                                            iargs, ip, cfg->real_offset, TRUE);
11006                                 CHECK_CFG_EXCEPTION;
11007                                 g_assert (costs > 0);
11008
11009                                 ip += 5;
11010                                 cfg->real_offset += 5;
11011
11012                                 *sp++= iargs [0];
11013
11014                                 inline_costs += costs;
11015                         }
11016                         else {
11017                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11018                                 CHECK_CFG_EXCEPTION;
11019                                 *sp ++ = ins;
11020                                 ip += 5;
11021                         }
11022                         break;
11023                 }
11024                 case CEE_UNBOX_ANY: {
11025                         MonoInst *res, *addr;
11026
11027                         CHECK_STACK (1);
11028                         --sp;
11029                         CHECK_OPSIZE (5);
11030                         token = read32 (ip + 1);
11031                         klass = mini_get_class (method, token, generic_context);
11032                         CHECK_TYPELOAD (klass);
11033
11034                         mono_save_token_info (cfg, image, token, klass);
11035
11036                         context_used = mini_class_check_context_used (cfg, klass);
11037
11038                         if (mini_is_gsharedvt_klass (klass)) {
11039                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11040                                 inline_costs += 2;
11041                         } else if (generic_class_is_reference_type (cfg, klass)) {
11042                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11043                                 CHECK_CFG_EXCEPTION;
11044                         } else if (mono_class_is_nullable (klass)) {
11045                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11046                         } else {
11047                                 addr = handle_unbox (cfg, klass, sp, context_used);
11048                                 /* LDOBJ */
11049                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11050                                 res = ins;
11051                                 inline_costs += 2;
11052                         }
11053
11054                         *sp ++ = res;
11055                         ip += 5;
11056                         break;
11057                 }
11058                 case CEE_BOX: {
11059                         MonoInst *val;
11060                         MonoClass *enum_class;
11061                         MonoMethod *has_flag;
11062
11063                         CHECK_STACK (1);
11064                         --sp;
11065                         val = *sp;
11066                         CHECK_OPSIZE (5);
11067                         token = read32 (ip + 1);
11068                         klass = mini_get_class (method, token, generic_context);
11069                         CHECK_TYPELOAD (klass);
11070
11071                         mono_save_token_info (cfg, image, token, klass);
11072
11073                         context_used = mini_class_check_context_used (cfg, klass);
11074
11075                         if (generic_class_is_reference_type (cfg, klass)) {
11076                                 *sp++ = val;
11077                                 ip += 5;
11078                                 break;
11079                         }
11080
11081                         if (klass == mono_defaults.void_class)
11082                                 UNVERIFIED;
11083                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11084                                 UNVERIFIED;
11085                         /* frequent check in generic code: box (struct), brtrue */
11086
11087                         /*
11088                          * Look for:
11089                          *
11090                          *   <push int/long ptr>
11091                          *   <push int/long>
11092                          *   box MyFlags
11093                          *   constrained. MyFlags
11094                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11095                          *
11096                          * If we find this sequence and the operand types on box and constrained
11097                          * are equal, we can emit a specialized instruction sequence instead of
11098                          * the very slow HasFlag () call.
11099                          */
11100                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11101                             /* Cheap checks first. */
11102                             ip + 5 + 6 + 5 < end &&
11103                             ip [5] == CEE_PREFIX1 &&
11104                             ip [6] == CEE_CONSTRAINED_ &&
11105                             ip [11] == CEE_CALLVIRT &&
11106                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11107                             mono_class_is_enum (klass) &&
11108                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11109                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11110                             has_flag->klass == mono_defaults.enum_class &&
11111                             !strcmp (has_flag->name, "HasFlag") &&
11112                             has_flag->signature->hasthis &&
11113                             has_flag->signature->param_count == 1) {
11114                                 CHECK_TYPELOAD (enum_class);
11115
11116                                 if (enum_class == klass) {
11117                                         MonoInst *enum_this, *enum_flag;
11118
11119                                         ip += 5 + 6 + 5;
11120                                         --sp;
11121
11122                                         enum_this = sp [0];
11123                                         enum_flag = sp [1];
11124
11125                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11126                                         break;
11127                                 }
11128                         }
11129
11130                         // FIXME: LLVM can't handle the inconsistent bb linking
11131                         if (!mono_class_is_nullable (klass) &&
11132                                 !mini_is_gsharedvt_klass (klass) &&
11133                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11134                                 (ip [5] == CEE_BRTRUE ||
11135                                  ip [5] == CEE_BRTRUE_S ||
11136                                  ip [5] == CEE_BRFALSE ||
11137                                  ip [5] == CEE_BRFALSE_S)) {
11138                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11139                                 int dreg;
11140                                 MonoBasicBlock *true_bb, *false_bb;
11141
11142                                 ip += 5;
11143
11144                                 if (cfg->verbose_level > 3) {
11145                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11146                                         printf ("<box+brtrue opt>\n");
11147                                 }
11148
11149                                 switch (*ip) {
11150                                 case CEE_BRTRUE_S:
11151                                 case CEE_BRFALSE_S:
11152                                         CHECK_OPSIZE (2);
11153                                         ip++;
11154                                         target = ip + 1 + (signed char)(*ip);
11155                                         ip++;
11156                                         break;
11157                                 case CEE_BRTRUE:
11158                                 case CEE_BRFALSE:
11159                                         CHECK_OPSIZE (5);
11160                                         ip++;
11161                                         target = ip + 4 + (gint)(read32 (ip));
11162                                         ip += 4;
11163                                         break;
11164                                 default:
11165                                         g_assert_not_reached ();
11166                                 }
11167
11168                                 /*
11169                                  * We need to link both bblocks, since it is needed for handling stack
11170                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11171                                  * Branching to only one of them would lead to inconsistencies, so
11172                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11173                                  */
11174                                 GET_BBLOCK (cfg, true_bb, target);
11175                                 GET_BBLOCK (cfg, false_bb, ip);
11176
11177                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11178                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11179
11180                                 if (sp != stack_start) {
11181                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11182                                         sp = stack_start;
11183                                         CHECK_UNVERIFIABLE (cfg);
11184                                 }
11185
11186                                 if (COMPILE_LLVM (cfg)) {
11187                                         dreg = alloc_ireg (cfg);
11188                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11189                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11190
11191                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11192                                 } else {
11193                                         /* The JIT can't eliminate the iconst+compare */
11194                                         MONO_INST_NEW (cfg, ins, OP_BR);
11195                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11196                                         MONO_ADD_INS (cfg->cbb, ins);
11197                                 }
11198
11199                                 start_new_bblock = 1;
11200                                 break;
11201                         }
11202
11203                         *sp++ = handle_box (cfg, val, klass, context_used);
11204
11205                         CHECK_CFG_EXCEPTION;
11206                         ip += 5;
11207                         inline_costs += 1;
11208                         break;
11209                 }
11210                 case CEE_UNBOX: {
11211                         CHECK_STACK (1);
11212                         --sp;
11213                         CHECK_OPSIZE (5);
11214                         token = read32 (ip + 1);
11215                         klass = mini_get_class (method, token, generic_context);
11216                         CHECK_TYPELOAD (klass);
11217
11218                         mono_save_token_info (cfg, image, token, klass);
11219
11220                         context_used = mini_class_check_context_used (cfg, klass);
11221
11222                         if (mono_class_is_nullable (klass)) {
11223                                 MonoInst *val;
11224
11225                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11226                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11227
11228                                 *sp++= ins;
11229                         } else {
11230                                 ins = handle_unbox (cfg, klass, sp, context_used);
11231                                 *sp++ = ins;
11232                         }
11233                         ip += 5;
11234                         inline_costs += 2;
11235                         break;
11236                 }
11237                 case CEE_LDFLD:
11238                 case CEE_LDFLDA:
11239                 case CEE_STFLD:
11240                 case CEE_LDSFLD:
11241                 case CEE_LDSFLDA:
11242                 case CEE_STSFLD: {
11243                         MonoClassField *field;
11244 #ifndef DISABLE_REMOTING
11245                         int costs;
11246 #endif
11247                         guint foffset;
11248                         gboolean is_instance;
11249                         int op;
11250                         gpointer addr = NULL;
11251                         gboolean is_special_static;
11252                         MonoType *ftype;
11253                         MonoInst *store_val = NULL;
11254                         MonoInst *thread_ins;
11255
11256                         op = *ip;
11257                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11258                         if (is_instance) {
11259                                 if (op == CEE_STFLD) {
11260                                         CHECK_STACK (2);
11261                                         sp -= 2;
11262                                         store_val = sp [1];
11263                                 } else {
11264                                         CHECK_STACK (1);
11265                                         --sp;
11266                                 }
11267                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11268                                         UNVERIFIED;
11269                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11270                                         UNVERIFIED;
11271                         } else {
11272                                 if (op == CEE_STSFLD) {
11273                                         CHECK_STACK (1);
11274                                         sp--;
11275                                         store_val = sp [0];
11276                                 }
11277                         }
11278
11279                         CHECK_OPSIZE (5);
11280                         token = read32 (ip + 1);
11281                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11282                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11283                                 klass = field->parent;
11284                         }
11285                         else {
11286                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11287                                 CHECK_CFG_ERROR;
11288                         }
11289                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11290                                 FIELD_ACCESS_FAILURE (method, field);
11291                         mono_class_init (klass);
11292
11293                         /* if the class is Critical then transparent code cannot access it's fields */
11294                         if (!is_instance && mono_security_core_clr_enabled ())
11295                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11296
11297                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11298                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11299                         if (mono_security_core_clr_enabled ())
11300                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11301                         */
11302
11303                         ftype = mono_field_get_type (field);
11304
11305                         /*
11306                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11307                          * the static case.
11308                          */
11309                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11310                                 switch (op) {
11311                                 case CEE_LDFLD:
11312                                         op = CEE_LDSFLD;
11313                                         break;
11314                                 case CEE_STFLD:
11315                                         op = CEE_STSFLD;
11316                                         break;
11317                                 case CEE_LDFLDA:
11318                                         op = CEE_LDSFLDA;
11319                                         break;
11320                                 default:
11321                                         g_assert_not_reached ();
11322                                 }
11323                                 is_instance = FALSE;
11324                         }
11325
11326                         context_used = mini_class_check_context_used (cfg, klass);
11327
11328                         /* INSTANCE CASE */
11329
11330                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11331                         if (op == CEE_STFLD) {
11332                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11333                                         UNVERIFIED;
11334 #ifndef DISABLE_REMOTING
11335                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11336                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11337                                         MonoInst *iargs [5];
11338
11339                                         GSHAREDVT_FAILURE (op);
11340
11341                                         iargs [0] = sp [0];
11342                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11343                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11344                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11345                                                     field->offset);
11346                                         iargs [4] = sp [1];
11347
11348                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11349                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11350                                                                                            iargs, ip, cfg->real_offset, TRUE);
11351                                                 CHECK_CFG_EXCEPTION;
11352                                                 g_assert (costs > 0);
11353
11354                                                 cfg->real_offset += 5;
11355
11356                                                 inline_costs += costs;
11357                                         } else {
11358                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11359                                         }
11360                                 } else
11361 #endif
11362                                 {
11363                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11364
11365                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11366
11367                                         if (mini_is_gsharedvt_klass (klass)) {
11368                                                 MonoInst *offset_ins;
11369
11370                                                 context_used = mini_class_check_context_used (cfg, klass);
11371
11372                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11373                                                 /* The value is offset by 1 */
11374                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11375                                                 dreg = alloc_ireg_mp (cfg);
11376                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11377                                                 wbarrier_ptr_ins = ins;
11378                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11379                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11380                                         } else {
11381                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11382                                         }
11383                                         if (sp [0]->opcode != OP_LDADDR)
11384                                                 store->flags |= MONO_INST_FAULT;
11385
11386                                         if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
11387                                                 if (mini_is_gsharedvt_klass (klass)) {
11388                                                         g_assert (wbarrier_ptr_ins);
11389                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11390                                                 } else {
11391                                                         /* insert call to write barrier */
11392                                                         MonoInst *ptr;
11393                                                         int dreg;
11394
11395                                                         dreg = alloc_ireg_mp (cfg);
11396                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11397                                                         emit_write_barrier (cfg, ptr, sp [1]);
11398                                                 }
11399                                         }
11400
11401                                         store->flags |= ins_flag;
11402                                 }
11403                                 ins_flag = 0;
11404                                 ip += 5;
11405                                 break;
11406                         }
11407
11408 #ifndef DISABLE_REMOTING
11409                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11410                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11411                                 MonoInst *iargs [4];
11412
11413                                 GSHAREDVT_FAILURE (op);
11414
11415                                 iargs [0] = sp [0];
11416                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11417                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11418                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11419                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11420                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11421                                                                                    iargs, ip, cfg->real_offset, TRUE);
11422                                         CHECK_CFG_EXCEPTION;
11423                                         g_assert (costs > 0);
11424
11425                                         cfg->real_offset += 5;
11426
11427                                         *sp++ = iargs [0];
11428
11429                                         inline_costs += costs;
11430                                 } else {
11431                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11432                                         *sp++ = ins;
11433                                 }
11434                         } else
11435 #endif
11436                         if (is_instance) {
11437                                 if (sp [0]->type == STACK_VTYPE) {
11438                                         MonoInst *var;
11439
11440                                         /* Have to compute the address of the variable */
11441
11442                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11443                                         if (!var)
11444                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11445                                         else
11446                                                 g_assert (var->klass == klass);
11447
11448                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11449                                         sp [0] = ins;
11450                                 }
11451
11452                                 if (op == CEE_LDFLDA) {
11453                                         if (sp [0]->type == STACK_OBJ) {
11454                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11455                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11456                                         }
11457
11458                                         dreg = alloc_ireg_mp (cfg);
11459
11460                                         if (mini_is_gsharedvt_klass (klass)) {
11461                                                 MonoInst *offset_ins;
11462
11463                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11464                                                 /* The value is offset by 1 */
11465                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11466                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11467                                         } else {
11468                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11469                                         }
11470                                         ins->klass = mono_class_from_mono_type (field->type);
11471                                         ins->type = STACK_MP;
11472                                         *sp++ = ins;
11473                                 } else {
11474                                         MonoInst *load;
11475
11476                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11477
11478                                         if (mini_is_gsharedvt_klass (klass)) {
11479                                                 MonoInst *offset_ins;
11480
11481                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11482                                                 /* The value is offset by 1 */
11483                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11484                                                 dreg = alloc_ireg_mp (cfg);
11485                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11486                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11487                                         } else {
11488                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11489                                         }
11490                                         load->flags |= ins_flag;
11491                                         if (sp [0]->opcode != OP_LDADDR)
11492                                                 load->flags |= MONO_INST_FAULT;
11493                                         *sp++ = load;
11494                                 }
11495                         }
11496
11497                         if (is_instance) {
11498                                 ins_flag = 0;
11499                                 ip += 5;
11500                                 break;
11501                         }
11502
11503                         /* STATIC CASE */
11504                         context_used = mini_class_check_context_used (cfg, klass);
11505
11506                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11507                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11508                                 CHECK_CFG_ERROR;
11509                         }
11510
11511                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11512                          * to be called here.
11513                          */
11514                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11515                                 mono_class_vtable (cfg->domain, klass);
11516                                 CHECK_TYPELOAD (klass);
11517                         }
11518                         mono_domain_lock (cfg->domain);
11519                         if (cfg->domain->special_static_fields)
11520                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11521                         mono_domain_unlock (cfg->domain);
11522
11523                         is_special_static = mono_class_field_is_special_static (field);
11524
11525                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11526                                 thread_ins = mono_get_thread_intrinsic (cfg);
11527                         else
11528                                 thread_ins = NULL;
11529
11530                         /* Generate IR to compute the field address */
11531                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11532                                 /*
11533                                  * Fast access to TLS data
11534                                  * Inline version of get_thread_static_data () in
11535                                  * threads.c.
11536                                  */
11537                                 guint32 offset;
11538                                 int idx, static_data_reg, array_reg, dreg;
11539
11540                                 GSHAREDVT_FAILURE (op);
11541
11542                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11543                                 static_data_reg = alloc_ireg (cfg);
11544                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11545
11546                                 if (cfg->compile_aot) {
11547                                         int offset_reg, offset2_reg, idx_reg;
11548
11549                                         /* For TLS variables, this will return the TLS offset */
11550                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11551                                         offset_reg = ins->dreg;
11552                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11553                                         idx_reg = alloc_ireg (cfg);
11554                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11555                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11556                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11557                                         array_reg = alloc_ireg (cfg);
11558                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11559                                         offset2_reg = alloc_ireg (cfg);
11560                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11561                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11562                                         dreg = alloc_ireg (cfg);
11563                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11564                                 } else {
11565                                         offset = (gsize)addr & 0x7fffffff;
11566                                         idx = offset & 0x3f;
11567
11568                                         array_reg = alloc_ireg (cfg);
11569                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11570                                         dreg = alloc_ireg (cfg);
11571                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11572                                 }
11573                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11574                                         (cfg->compile_aot && is_special_static) ||
11575                                         (context_used && is_special_static)) {
11576                                 MonoInst *iargs [2];
11577
11578                                 g_assert (field->parent);
11579                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11580                                 if (context_used) {
11581                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11582                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11583                                 } else {
11584                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11585                                 }
11586                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11587                         } else if (context_used) {
11588                                 MonoInst *static_data;
11589
11590                                 /*
11591                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11592                                         method->klass->name_space, method->klass->name, method->name,
11593                                         depth, field->offset);
11594                                 */
11595
11596                                 if (mono_class_needs_cctor_run (klass, method))
11597                                         emit_class_init (cfg, klass);
11598
11599                                 /*
11600                                  * The pointer we're computing here is
11601                                  *
11602                                  *   super_info.static_data + field->offset
11603                                  */
11604                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11605                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11606
11607                                 if (mini_is_gsharedvt_klass (klass)) {
11608                                         MonoInst *offset_ins;
11609
11610                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11611                                         /* The value is offset by 1 */
11612                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11613                                         dreg = alloc_ireg_mp (cfg);
11614                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11615                                 } else if (field->offset == 0) {
11616                                         ins = static_data;
11617                                 } else {
11618                                         int addr_reg = mono_alloc_preg (cfg);
11619                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11620                                 }
11621                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11622                                 MonoInst *iargs [2];
11623
11624                                 g_assert (field->parent);
11625                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11626                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11627                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11628                         } else {
11629                                 MonoVTable *vtable = NULL;
11630
11631                                 if (!cfg->compile_aot)
11632                                         vtable = mono_class_vtable (cfg->domain, klass);
11633                                 CHECK_TYPELOAD (klass);
11634
11635                                 if (!addr) {
11636                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11637                                                 if (!(g_slist_find (class_inits, klass))) {
11638                                                         emit_class_init (cfg, klass);
11639                                                         if (cfg->verbose_level > 2)
11640                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11641                                                         class_inits = g_slist_prepend (class_inits, klass);
11642                                                 }
11643                                         } else {
11644                                                 if (cfg->run_cctors) {
11645                                                         /* This makes so that inline cannot trigger */
11646                                                         /* .cctors: too many apps depend on them */
11647                                                         /* running with a specific order... */
11648                                                         g_assert (vtable);
11649                                                         if (! vtable->initialized)
11650                                                                 INLINE_FAILURE ("class init");
11651                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11652                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11653                                                                 goto exception_exit;
11654                                                         }
11655                                                 }
11656                                         }
11657                                         if (cfg->compile_aot)
11658                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11659                                         else {
11660                                                 g_assert (vtable);
11661                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11662                                                 g_assert (addr);
11663                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11664                                         }
11665                                 } else {
11666                                         MonoInst *iargs [1];
11667                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11668                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11669                                 }
11670                         }
11671
11672                         /* Generate IR to do the actual load/store operation */
11673
11674                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11675                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11676                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11677                         }
11678
11679                         if (op == CEE_LDSFLDA) {
11680                                 ins->klass = mono_class_from_mono_type (ftype);
11681                                 ins->type = STACK_PTR;
11682                                 *sp++ = ins;
11683                         } else if (op == CEE_STSFLD) {
11684                                 MonoInst *store;
11685
11686                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11687                                 store->flags |= ins_flag;
11688                         } else {
11689                                 gboolean is_const = FALSE;
11690                                 MonoVTable *vtable = NULL;
11691                                 gpointer addr = NULL;
11692
11693                                 if (!context_used) {
11694                                         vtable = mono_class_vtable (cfg->domain, klass);
11695                                         CHECK_TYPELOAD (klass);
11696                                 }
11697                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11698                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11699                                         int ro_type = ftype->type;
11700                                         if (!addr)
11701                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11702                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11703                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11704                                         }
11705
11706                                         GSHAREDVT_FAILURE (op);
11707
11708                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11709                                         is_const = TRUE;
11710                                         switch (ro_type) {
11711                                         case MONO_TYPE_BOOLEAN:
11712                                         case MONO_TYPE_U1:
11713                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11714                                                 sp++;
11715                                                 break;
11716                                         case MONO_TYPE_I1:
11717                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11718                                                 sp++;
11719                                                 break;
11720                                         case MONO_TYPE_CHAR:
11721                                         case MONO_TYPE_U2:
11722                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11723                                                 sp++;
11724                                                 break;
11725                                         case MONO_TYPE_I2:
11726                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11727                                                 sp++;
11728                                                 break;
11729                                                 break;
11730                                         case MONO_TYPE_I4:
11731                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11732                                                 sp++;
11733                                                 break;
11734                                         case MONO_TYPE_U4:
11735                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_I:
11739                                         case MONO_TYPE_U:
11740                                         case MONO_TYPE_PTR:
11741                                         case MONO_TYPE_FNPTR:
11742                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11743                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11744                                                 sp++;
11745                                                 break;
11746                                         case MONO_TYPE_STRING:
11747                                         case MONO_TYPE_OBJECT:
11748                                         case MONO_TYPE_CLASS:
11749                                         case MONO_TYPE_SZARRAY:
11750                                         case MONO_TYPE_ARRAY:
11751                                                 if (!mono_gc_is_moving ()) {
11752                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11753                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11754                                                         sp++;
11755                                                 } else {
11756                                                         is_const = FALSE;
11757                                                 }
11758                                                 break;
11759                                         case MONO_TYPE_I8:
11760                                         case MONO_TYPE_U8:
11761                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11762                                                 sp++;
11763                                                 break;
11764                                         case MONO_TYPE_R4:
11765                                         case MONO_TYPE_R8:
11766                                         case MONO_TYPE_VALUETYPE:
11767                                         default:
11768                                                 is_const = FALSE;
11769                                                 break;
11770                                         }
11771                                 }
11772
11773                                 if (!is_const) {
11774                                         MonoInst *load;
11775
11776                                         CHECK_STACK_OVF (1);
11777
11778                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11779                                         load->flags |= ins_flag;
11780                                         ins_flag = 0;
11781                                         *sp++ = load;
11782                                 }
11783                         }
11784
11785                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11786                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11787                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11788                         }
11789
11790                         ins_flag = 0;
11791                         ip += 5;
11792                         break;
11793                 }
11794                 case CEE_STOBJ:
11795                         CHECK_STACK (2);
11796                         sp -= 2;
11797                         CHECK_OPSIZE (5);
11798                         token = read32 (ip + 1);
11799                         klass = mini_get_class (method, token, generic_context);
11800                         CHECK_TYPELOAD (klass);
11801                         if (ins_flag & MONO_INST_VOLATILE) {
11802                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11803                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11804                         }
11805                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11806                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11807                         ins->flags |= ins_flag;
11808                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11809                                         generic_class_is_reference_type (cfg, klass)) {
11810                                 /* insert call to write barrier */
11811                                 emit_write_barrier (cfg, sp [0], sp [1]);
11812                         }
11813                         ins_flag = 0;
11814                         ip += 5;
11815                         inline_costs += 1;
11816                         break;
11817
11818                         /*
11819                          * Array opcodes
11820                          */
11821                 case CEE_NEWARR: {
11822                         MonoInst *len_ins;
11823                         const char *data_ptr;
11824                         int data_size = 0;
11825                         guint32 field_token;
11826
11827                         CHECK_STACK (1);
11828                         --sp;
11829
11830                         CHECK_OPSIZE (5);
11831                         token = read32 (ip + 1);
11832
11833                         klass = mini_get_class (method, token, generic_context);
11834                         CHECK_TYPELOAD (klass);
11835
11836                         context_used = mini_class_check_context_used (cfg, klass);
11837
11838                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11839                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11840                                 ins->sreg1 = sp [0]->dreg;
11841                                 ins->type = STACK_I4;
11842                                 ins->dreg = alloc_ireg (cfg);
11843                                 MONO_ADD_INS (cfg->cbb, ins);
11844                                 *sp = mono_decompose_opcode (cfg, ins);
11845                         }
11846
11847                         if (context_used) {
11848                                 MonoInst *args [3];
11849                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11850                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11851
11852                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11853
11854                                 /* vtable */
11855                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11856                                         array_class, MONO_RGCTX_INFO_VTABLE);
11857                                 /* array len */
11858                                 args [1] = sp [0];
11859
11860                                 if (managed_alloc)
11861                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11862                                 else
11863                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11864                         } else {
11865                                 if (cfg->opt & MONO_OPT_SHARED) {
11866                                         /* Decompose now to avoid problems with references to the domainvar */
11867                                         MonoInst *iargs [3];
11868
11869                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11870                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11871                                         iargs [2] = sp [0];
11872
11873                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11874                                 } else {
11875                                         /* Decompose later since it is needed by abcrem */
11876                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11877                                         mono_class_vtable (cfg->domain, array_type);
11878                                         CHECK_TYPELOAD (array_type);
11879
11880                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11881                                         ins->dreg = alloc_ireg_ref (cfg);
11882                                         ins->sreg1 = sp [0]->dreg;
11883                                         ins->inst_newa_class = klass;
11884                                         ins->type = STACK_OBJ;
11885                                         ins->klass = array_type;
11886                                         MONO_ADD_INS (cfg->cbb, ins);
11887                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11888                                         cfg->cbb->has_array_access = TRUE;
11889
11890                                         /* Needed so mono_emit_load_get_addr () gets called */
11891                                         mono_get_got_var (cfg);
11892                                 }
11893                         }
11894
11895                         len_ins = sp [0];
11896                         ip += 5;
11897                         *sp++ = ins;
11898                         inline_costs += 1;
11899
11900                         /*
11901                          * we inline/optimize the initialization sequence if possible.
11902                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11903                          * for small sizes open code the memcpy
11904                          * ensure the rva field is big enough
11905                          */
11906                         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))) {
11907                                 MonoMethod *memcpy_method = get_memcpy_method ();
11908                                 MonoInst *iargs [3];
11909                                 int add_reg = alloc_ireg_mp (cfg);
11910
11911                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11912                                 if (cfg->compile_aot) {
11913                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11914                                 } else {
11915                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11916                                 }
11917                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11918                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11919                                 ip += 11;
11920                         }
11921
11922                         break;
11923                 }
11924                 case CEE_LDLEN:
11925                         CHECK_STACK (1);
11926                         --sp;
11927                         if (sp [0]->type != STACK_OBJ)
11928                                 UNVERIFIED;
11929
11930                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11931                         ins->dreg = alloc_preg (cfg);
11932                         ins->sreg1 = sp [0]->dreg;
11933                         ins->type = STACK_I4;
11934                         /* This flag will be inherited by the decomposition */
11935                         ins->flags |= MONO_INST_FAULT;
11936                         MONO_ADD_INS (cfg->cbb, ins);
11937                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11938                         cfg->cbb->has_array_access = TRUE;
11939                         ip ++;
11940                         *sp++ = ins;
11941                         break;
11942                 case CEE_LDELEMA:
11943                         CHECK_STACK (2);
11944                         sp -= 2;
11945                         CHECK_OPSIZE (5);
11946                         if (sp [0]->type != STACK_OBJ)
11947                                 UNVERIFIED;
11948
11949                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11950
11951                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11952                         CHECK_TYPELOAD (klass);
11953                         /* we need to make sure that this array is exactly the type it needs
11954                          * to be for correctness. the wrappers are lax with their usage
11955                          * so we need to ignore them here
11956                          */
11957                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11958                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11959                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11960                                 CHECK_TYPELOAD (array_class);
11961                         }
11962
11963                         readonly = FALSE;
11964                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11965                         *sp++ = ins;
11966                         ip += 5;
11967                         break;
11968                 case CEE_LDELEM:
11969                 case CEE_LDELEM_I1:
11970                 case CEE_LDELEM_U1:
11971                 case CEE_LDELEM_I2:
11972                 case CEE_LDELEM_U2:
11973                 case CEE_LDELEM_I4:
11974                 case CEE_LDELEM_U4:
11975                 case CEE_LDELEM_I8:
11976                 case CEE_LDELEM_I:
11977                 case CEE_LDELEM_R4:
11978                 case CEE_LDELEM_R8:
11979                 case CEE_LDELEM_REF: {
11980                         MonoInst *addr;
11981
11982                         CHECK_STACK (2);
11983                         sp -= 2;
11984
11985                         if (*ip == CEE_LDELEM) {
11986                                 CHECK_OPSIZE (5);
11987                                 token = read32 (ip + 1);
11988                                 klass = mini_get_class (method, token, generic_context);
11989                                 CHECK_TYPELOAD (klass);
11990                                 mono_class_init (klass);
11991                         }
11992                         else
11993                                 klass = array_access_to_klass (*ip);
11994
11995                         if (sp [0]->type != STACK_OBJ)
11996                                 UNVERIFIED;
11997
11998                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11999
12000                         if (mini_is_gsharedvt_variable_klass (klass)) {
12001                                 // FIXME-VT: OP_ICONST optimization
12002                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12003                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12004                                 ins->opcode = OP_LOADV_MEMBASE;
12005                         } else if (sp [1]->opcode == OP_ICONST) {
12006                                 int array_reg = sp [0]->dreg;
12007                                 int index_reg = sp [1]->dreg;
12008                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12009
12010                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12011                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12012
12013                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12014                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12015                         } else {
12016                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12017                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12018                         }
12019                         *sp++ = ins;
12020                         if (*ip == CEE_LDELEM)
12021                                 ip += 5;
12022                         else
12023                                 ++ip;
12024                         break;
12025                 }
12026                 case CEE_STELEM_I:
12027                 case CEE_STELEM_I1:
12028                 case CEE_STELEM_I2:
12029                 case CEE_STELEM_I4:
12030                 case CEE_STELEM_I8:
12031                 case CEE_STELEM_R4:
12032                 case CEE_STELEM_R8:
12033                 case CEE_STELEM_REF:
12034                 case CEE_STELEM: {
12035                         CHECK_STACK (3);
12036                         sp -= 3;
12037
12038                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12039
12040                         if (*ip == CEE_STELEM) {
12041                                 CHECK_OPSIZE (5);
12042                                 token = read32 (ip + 1);
12043                                 klass = mini_get_class (method, token, generic_context);
12044                                 CHECK_TYPELOAD (klass);
12045                                 mono_class_init (klass);
12046                         }
12047                         else
12048                                 klass = array_access_to_klass (*ip);
12049
12050                         if (sp [0]->type != STACK_OBJ)
12051                                 UNVERIFIED;
12052
12053                         emit_array_store (cfg, klass, sp, TRUE);
12054
12055                         if (*ip == CEE_STELEM)
12056                                 ip += 5;
12057                         else
12058                                 ++ip;
12059                         inline_costs += 1;
12060                         break;
12061                 }
12062                 case CEE_CKFINITE: {
12063                         CHECK_STACK (1);
12064                         --sp;
12065
12066                         if (cfg->llvm_only) {
12067                                 MonoInst *iargs [1];
12068
12069                                 iargs [0] = sp [0];
12070                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12071                         } else  {
12072                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12073                                 ins->sreg1 = sp [0]->dreg;
12074                                 ins->dreg = alloc_freg (cfg);
12075                                 ins->type = STACK_R8;
12076                                 MONO_ADD_INS (cfg->cbb, ins);
12077
12078                                 *sp++ = mono_decompose_opcode (cfg, ins);
12079                         }
12080
12081                         ++ip;
12082                         break;
12083                 }
12084                 case CEE_REFANYVAL: {
12085                         MonoInst *src_var, *src;
12086
12087                         int klass_reg = alloc_preg (cfg);
12088                         int dreg = alloc_preg (cfg);
12089
12090                         GSHAREDVT_FAILURE (*ip);
12091
12092                         CHECK_STACK (1);
12093                         MONO_INST_NEW (cfg, ins, *ip);
12094                         --sp;
12095                         CHECK_OPSIZE (5);
12096                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12097                         CHECK_TYPELOAD (klass);
12098
12099                         context_used = mini_class_check_context_used (cfg, klass);
12100
12101                         // FIXME:
12102                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12103                         if (!src_var)
12104                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12105                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12106                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12107
12108                         if (context_used) {
12109                                 MonoInst *klass_ins;
12110
12111                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12112                                                 klass, MONO_RGCTX_INFO_KLASS);
12113
12114                                 // FIXME:
12115                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12116                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12117                         } else {
12118                                 mini_emit_class_check (cfg, klass_reg, klass);
12119                         }
12120                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12121                         ins->type = STACK_MP;
12122                         ins->klass = klass;
12123                         *sp++ = ins;
12124                         ip += 5;
12125                         break;
12126                 }
12127                 case CEE_MKREFANY: {
12128                         MonoInst *loc, *addr;
12129
12130                         GSHAREDVT_FAILURE (*ip);
12131
12132                         CHECK_STACK (1);
12133                         MONO_INST_NEW (cfg, ins, *ip);
12134                         --sp;
12135                         CHECK_OPSIZE (5);
12136                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12137                         CHECK_TYPELOAD (klass);
12138
12139                         context_used = mini_class_check_context_used (cfg, klass);
12140
12141                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12142                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12143
12144                         if (context_used) {
12145                                 MonoInst *const_ins;
12146                                 int type_reg = alloc_preg (cfg);
12147
12148                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12149                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12150                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12151                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12152                         } else if (cfg->compile_aot) {
12153                                 int const_reg = alloc_preg (cfg);
12154                                 int type_reg = alloc_preg (cfg);
12155
12156                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12157                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12158                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12159                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12160                         } else {
12161                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12162                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12163                         }
12164                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12165
12166                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12167                         ins->type = STACK_VTYPE;
12168                         ins->klass = mono_defaults.typed_reference_class;
12169                         *sp++ = ins;
12170                         ip += 5;
12171                         break;
12172                 }
12173                 case CEE_LDTOKEN: {
12174                         gpointer handle;
12175                         MonoClass *handle_class;
12176
12177                         CHECK_STACK_OVF (1);
12178
12179                         CHECK_OPSIZE (5);
12180                         n = read32 (ip + 1);
12181
12182                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12183                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12184                                 handle = mono_method_get_wrapper_data (method, n);
12185                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12186                                 if (handle_class == mono_defaults.typehandle_class)
12187                                         handle = &((MonoClass*)handle)->byval_arg;
12188                         }
12189                         else {
12190                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12191                                 CHECK_CFG_ERROR;
12192                         }
12193                         if (!handle)
12194                                 LOAD_ERROR;
12195                         mono_class_init (handle_class);
12196                         if (cfg->gshared) {
12197                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12198                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12199                                         /* This case handles ldtoken
12200                                            of an open type, like for
12201                                            typeof(Gen<>). */
12202                                         context_used = 0;
12203                                 } else if (handle_class == mono_defaults.typehandle_class) {
12204                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12205                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12206                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12207                                 else if (handle_class == mono_defaults.methodhandle_class)
12208                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12209                                 else
12210                                         g_assert_not_reached ();
12211                         }
12212
12213                         if ((cfg->opt & MONO_OPT_SHARED) &&
12214                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12215                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12216                                 MonoInst *addr, *vtvar, *iargs [3];
12217                                 int method_context_used;
12218
12219                                 method_context_used = mini_method_check_context_used (cfg, method);
12220
12221                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12222
12223                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12224                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12225                                 if (method_context_used) {
12226                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12227                                                 method, MONO_RGCTX_INFO_METHOD);
12228                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12229                                 } else {
12230                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12231                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12232                                 }
12233                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12234
12235                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12236
12237                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12238                         } else {
12239                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12240                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12241                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12242                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12243                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12244                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12245
12246                                         mono_class_init (tclass);
12247                                         if (context_used) {
12248                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12249                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12250                                         } else if (cfg->compile_aot) {
12251                                                 if (method->wrapper_type) {
12252                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12253                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12254                                                                 /* Special case for static synchronized wrappers */
12255                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12256                                                         } else {
12257                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12258                                                                 /* FIXME: n is not a normal token */
12259                                                                 DISABLE_AOT (cfg);
12260                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12261                                                         }
12262                                                 } else {
12263                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12264                                                 }
12265                                         } else {
12266                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12267                                                 CHECK_CFG_ERROR;
12268                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12269                                         }
12270                                         ins->type = STACK_OBJ;
12271                                         ins->klass = cmethod->klass;
12272                                         ip += 5;
12273                                 } else {
12274                                         MonoInst *addr, *vtvar;
12275
12276                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12277
12278                                         if (context_used) {
12279                                                 if (handle_class == mono_defaults.typehandle_class) {
12280                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12281                                                                         mono_class_from_mono_type ((MonoType *)handle),
12282                                                                         MONO_RGCTX_INFO_TYPE);
12283                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12284                                                         ins = emit_get_rgctx_method (cfg, context_used,
12285                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12286                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12287                                                         ins = emit_get_rgctx_field (cfg, context_used,
12288                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12289                                                 } else {
12290                                                         g_assert_not_reached ();
12291                                                 }
12292                                         } else if (cfg->compile_aot) {
12293                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12294                                         } else {
12295                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12296                                         }
12297                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12298                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12299                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12300                                 }
12301                         }
12302
12303                         *sp++ = ins;
12304                         ip += 5;
12305                         break;
12306                 }
12307                 case CEE_THROW:
12308                         CHECK_STACK (1);
12309                         MONO_INST_NEW (cfg, ins, OP_THROW);
12310                         --sp;
12311                         ins->sreg1 = sp [0]->dreg;
12312                         ip++;
12313                         cfg->cbb->out_of_line = TRUE;
12314                         MONO_ADD_INS (cfg->cbb, ins);
12315                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12316                         MONO_ADD_INS (cfg->cbb, ins);
12317                         sp = stack_start;
12318
12319                         link_bblock (cfg, cfg->cbb, end_bblock);
12320                         start_new_bblock = 1;
12321                         /* This can complicate code generation for llvm since the return value might not be defined */
12322                         if (COMPILE_LLVM (cfg))
12323                                 INLINE_FAILURE ("throw");
12324                         break;
12325                 case CEE_ENDFINALLY:
12326                         /* mono_save_seq_point_info () depends on this */
12327                         if (sp != stack_start)
12328                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12329                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12330                         MONO_ADD_INS (cfg->cbb, ins);
12331                         ip++;
12332                         start_new_bblock = 1;
12333
12334                         /*
12335                          * Control will leave the method so empty the stack, otherwise
12336                          * the next basic block will start with a nonempty stack.
12337                          */
12338                         while (sp != stack_start) {
12339                                 sp--;
12340                         }
12341                         break;
12342                 case CEE_LEAVE:
12343                 case CEE_LEAVE_S: {
12344                         GList *handlers;
12345
12346                         if (*ip == CEE_LEAVE) {
12347                                 CHECK_OPSIZE (5);
12348                                 target = ip + 5 + (gint32)read32(ip + 1);
12349                         } else {
12350                                 CHECK_OPSIZE (2);
12351                                 target = ip + 2 + (signed char)(ip [1]);
12352                         }
12353
12354                         /* empty the stack */
12355                         while (sp != stack_start) {
12356                                 sp--;
12357                         }
12358
12359                         /*
12360                          * If this leave statement is in a catch block, check for a
12361                          * pending exception, and rethrow it if necessary.
12362                          * We avoid doing this in runtime invoke wrappers, since those are called
12363                          * by native code which excepts the wrapper to catch all exceptions.
12364                          */
12365                         for (i = 0; i < header->num_clauses; ++i) {
12366                                 MonoExceptionClause *clause = &header->clauses [i];
12367
12368                                 /*
12369                                  * Use <= in the final comparison to handle clauses with multiple
12370                                  * leave statements, like in bug #78024.
12371                                  * The ordering of the exception clauses guarantees that we find the
12372                                  * innermost clause.
12373                                  */
12374                                 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) {
12375                                         MonoInst *exc_ins;
12376                                         MonoBasicBlock *dont_throw;
12377
12378                                         /*
12379                                           MonoInst *load;
12380
12381                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12382                                         */
12383
12384                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12385
12386                                         NEW_BBLOCK (cfg, dont_throw);
12387
12388                                         /*
12389                                          * Currently, we always rethrow the abort exception, despite the
12390                                          * fact that this is not correct. See thread6.cs for an example.
12391                                          * But propagating the abort exception is more important than
12392                                          * getting the sematics right.
12393                                          */
12394                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12395                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12396                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12397
12398                                         MONO_START_BB (cfg, dont_throw);
12399                                 }
12400                         }
12401
12402 #ifdef ENABLE_LLVM
12403                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12404 #endif
12405
12406                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12407                                 GList *tmp;
12408                                 MonoExceptionClause *clause;
12409
12410                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12411                                         clause = (MonoExceptionClause *)tmp->data;
12412                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12413                                         g_assert (tblock);
12414                                         link_bblock (cfg, cfg->cbb, tblock);
12415                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12416                                         ins->inst_target_bb = tblock;
12417                                         ins->inst_eh_block = clause;
12418                                         MONO_ADD_INS (cfg->cbb, ins);
12419                                         cfg->cbb->has_call_handler = 1;
12420                                         if (COMPILE_LLVM (cfg)) {
12421                                                 MonoBasicBlock *target_bb;
12422
12423                                                 /*
12424                                                  * Link the finally bblock with the target, since it will
12425                                                  * conceptually branch there.
12426                                                  */
12427                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12428                                                 GET_BBLOCK (cfg, target_bb, target);
12429                                                 link_bblock (cfg, tblock, target_bb);
12430                                         }
12431                                 }
12432                                 g_list_free (handlers);
12433                         }
12434
12435                         MONO_INST_NEW (cfg, ins, OP_BR);
12436                         MONO_ADD_INS (cfg->cbb, ins);
12437                         GET_BBLOCK (cfg, tblock, target);
12438                         link_bblock (cfg, cfg->cbb, tblock);
12439                         ins->inst_target_bb = tblock;
12440
12441                         start_new_bblock = 1;
12442
12443                         if (*ip == CEE_LEAVE)
12444                                 ip += 5;
12445                         else
12446                                 ip += 2;
12447
12448                         break;
12449                 }
12450
12451                         /*
12452                          * Mono specific opcodes
12453                          */
12454                 case MONO_CUSTOM_PREFIX: {
12455
12456                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12457
12458                         CHECK_OPSIZE (2);
12459                         switch (ip [1]) {
12460                         case CEE_MONO_ICALL: {
12461                                 gpointer func;
12462                                 MonoJitICallInfo *info;
12463
12464                                 token = read32 (ip + 2);
12465                                 func = mono_method_get_wrapper_data (method, token);
12466                                 info = mono_find_jit_icall_by_addr (func);
12467                                 if (!info)
12468                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12469                                 g_assert (info);
12470
12471                                 CHECK_STACK (info->sig->param_count);
12472                                 sp -= info->sig->param_count;
12473
12474                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12475                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12476                                         *sp++ = ins;
12477
12478                                 ip += 6;
12479                                 inline_costs += 10 * num_calls++;
12480
12481                                 break;
12482                         }
12483                         case CEE_MONO_LDPTR_CARD_TABLE:
12484                         case CEE_MONO_LDPTR_NURSERY_START:
12485                         case CEE_MONO_LDPTR_NURSERY_BITS:
12486                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12487                                 CHECK_STACK_OVF (1);
12488
12489                                 switch (ip [1]) {
12490                                         case CEE_MONO_LDPTR_CARD_TABLE:
12491                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12492                                                 break;
12493                                         case CEE_MONO_LDPTR_NURSERY_START:
12494                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12495                                                 break;
12496                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12497                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12498                                                 break;
12499                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12500                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12501                                                 break;
12502                                 }
12503
12504                                 *sp++ = ins;
12505                                 ip += 2;
12506                                 inline_costs += 10 * num_calls++;
12507                                 break;
12508                         }
12509                         case CEE_MONO_LDPTR: {
12510                                 gpointer ptr;
12511
12512                                 CHECK_STACK_OVF (1);
12513                                 CHECK_OPSIZE (6);
12514                                 token = read32 (ip + 2);
12515
12516                                 ptr = mono_method_get_wrapper_data (method, token);
12517                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12518                                 *sp++ = ins;
12519                                 ip += 6;
12520                                 inline_costs += 10 * num_calls++;
12521                                 /* Can't embed random pointers into AOT code */
12522                                 DISABLE_AOT (cfg);
12523                                 break;
12524                         }
12525                         case CEE_MONO_JIT_ICALL_ADDR: {
12526                                 MonoJitICallInfo *callinfo;
12527                                 gpointer ptr;
12528
12529                                 CHECK_STACK_OVF (1);
12530                                 CHECK_OPSIZE (6);
12531                                 token = read32 (ip + 2);
12532
12533                                 ptr = mono_method_get_wrapper_data (method, token);
12534                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12535                                 g_assert (callinfo);
12536                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12537                                 *sp++ = ins;
12538                                 ip += 6;
12539                                 inline_costs += 10 * num_calls++;
12540                                 break;
12541                         }
12542                         case CEE_MONO_ICALL_ADDR: {
12543                                 MonoMethod *cmethod;
12544                                 gpointer ptr;
12545
12546                                 CHECK_STACK_OVF (1);
12547                                 CHECK_OPSIZE (6);
12548                                 token = read32 (ip + 2);
12549
12550                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12551
12552                                 if (cfg->compile_aot) {
12553                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12554                                 } else {
12555                                         ptr = mono_lookup_internal_call (cmethod);
12556                                         g_assert (ptr);
12557                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12558                                 }
12559                                 *sp++ = ins;
12560                                 ip += 6;
12561                                 break;
12562                         }
12563                         case CEE_MONO_VTADDR: {
12564                                 MonoInst *src_var, *src;
12565
12566                                 CHECK_STACK (1);
12567                                 --sp;
12568
12569                                 // FIXME:
12570                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12571                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12572                                 *sp++ = src;
12573                                 ip += 2;
12574                                 break;
12575                         }
12576                         case CEE_MONO_NEWOBJ: {
12577                                 MonoInst *iargs [2];
12578
12579                                 CHECK_STACK_OVF (1);
12580                                 CHECK_OPSIZE (6);
12581                                 token = read32 (ip + 2);
12582                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12583                                 mono_class_init (klass);
12584                                 NEW_DOMAINCONST (cfg, iargs [0]);
12585                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12586                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12587                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12588                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12589                                 ip += 6;
12590                                 inline_costs += 10 * num_calls++;
12591                                 break;
12592                         }
12593                         case CEE_MONO_OBJADDR:
12594                                 CHECK_STACK (1);
12595                                 --sp;
12596                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12597                                 ins->dreg = alloc_ireg_mp (cfg);
12598                                 ins->sreg1 = sp [0]->dreg;
12599                                 ins->type = STACK_MP;
12600                                 MONO_ADD_INS (cfg->cbb, ins);
12601                                 *sp++ = ins;
12602                                 ip += 2;
12603                                 break;
12604                         case CEE_MONO_LDNATIVEOBJ:
12605                                 /*
12606                                  * Similar to LDOBJ, but instead load the unmanaged
12607                                  * representation of the vtype to the stack.
12608                                  */
12609                                 CHECK_STACK (1);
12610                                 CHECK_OPSIZE (6);
12611                                 --sp;
12612                                 token = read32 (ip + 2);
12613                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12614                                 g_assert (klass->valuetype);
12615                                 mono_class_init (klass);
12616
12617                                 {
12618                                         MonoInst *src, *dest, *temp;
12619
12620                                         src = sp [0];
12621                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12622                                         temp->backend.is_pinvoke = 1;
12623                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12624                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12625
12626                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12627                                         dest->type = STACK_VTYPE;
12628                                         dest->klass = klass;
12629
12630                                         *sp ++ = dest;
12631                                         ip += 6;
12632                                 }
12633                                 break;
12634                         case CEE_MONO_RETOBJ: {
12635                                 /*
12636                                  * Same as RET, but return the native representation of a vtype
12637                                  * to the caller.
12638                                  */
12639                                 g_assert (cfg->ret);
12640                                 g_assert (mono_method_signature (method)->pinvoke);
12641                                 CHECK_STACK (1);
12642                                 --sp;
12643
12644                                 CHECK_OPSIZE (6);
12645                                 token = read32 (ip + 2);
12646                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12647
12648                                 if (!cfg->vret_addr) {
12649                                         g_assert (cfg->ret_var_is_local);
12650
12651                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12652                                 } else {
12653                                         EMIT_NEW_RETLOADA (cfg, ins);
12654                                 }
12655                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12656
12657                                 if (sp != stack_start)
12658                                         UNVERIFIED;
12659
12660                                 MONO_INST_NEW (cfg, ins, OP_BR);
12661                                 ins->inst_target_bb = end_bblock;
12662                                 MONO_ADD_INS (cfg->cbb, ins);
12663                                 link_bblock (cfg, cfg->cbb, end_bblock);
12664                                 start_new_bblock = 1;
12665                                 ip += 6;
12666                                 break;
12667                         }
12668                         case CEE_MONO_CISINST:
12669                         case CEE_MONO_CCASTCLASS: {
12670                                 int token;
12671                                 CHECK_STACK (1);
12672                                 --sp;
12673                                 CHECK_OPSIZE (6);
12674                                 token = read32 (ip + 2);
12675                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12676                                 if (ip [1] == CEE_MONO_CISINST)
12677                                         ins = handle_cisinst (cfg, klass, sp [0]);
12678                                 else
12679                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12680                                 *sp++ = ins;
12681                                 ip += 6;
12682                                 break;
12683                         }
12684                         case CEE_MONO_SAVE_LMF:
12685                         case CEE_MONO_RESTORE_LMF:
12686                                 ip += 2;
12687                                 break;
12688                         case CEE_MONO_CLASSCONST:
12689                                 CHECK_STACK_OVF (1);
12690                                 CHECK_OPSIZE (6);
12691                                 token = read32 (ip + 2);
12692                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12693                                 *sp++ = ins;
12694                                 ip += 6;
12695                                 inline_costs += 10 * num_calls++;
12696                                 break;
12697                         case CEE_MONO_NOT_TAKEN:
12698                                 cfg->cbb->out_of_line = TRUE;
12699                                 ip += 2;
12700                                 break;
12701                         case CEE_MONO_TLS: {
12702                                 MonoTlsKey key;
12703
12704                                 CHECK_STACK_OVF (1);
12705                                 CHECK_OPSIZE (6);
12706                                 key = (MonoTlsKey)read32 (ip + 2);
12707                                 g_assert (key < TLS_KEY_NUM);
12708
12709                                 ins = mono_create_tls_get (cfg, key);
12710                                 if (!ins) {
12711                                         if (cfg->compile_aot) {
12712                                                 DISABLE_AOT (cfg);
12713                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12714                                                 ins->dreg = alloc_preg (cfg);
12715                                                 ins->type = STACK_PTR;
12716                                         } else {
12717                                                 g_assert_not_reached ();
12718                                         }
12719                                 }
12720                                 ins->type = STACK_PTR;
12721                                 MONO_ADD_INS (cfg->cbb, ins);
12722                                 *sp++ = ins;
12723                                 ip += 6;
12724                                 break;
12725                         }
12726                         case CEE_MONO_DYN_CALL: {
12727                                 MonoCallInst *call;
12728
12729                                 /* It would be easier to call a trampoline, but that would put an
12730                                  * extra frame on the stack, confusing exception handling. So
12731                                  * implement it inline using an opcode for now.
12732                                  */
12733
12734                                 if (!cfg->dyn_call_var) {
12735                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12736                                         /* prevent it from being register allocated */
12737                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12738                                 }
12739
12740                                 /* Has to use a call inst since it local regalloc expects it */
12741                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12742                                 ins = (MonoInst*)call;
12743                                 sp -= 2;
12744                                 ins->sreg1 = sp [0]->dreg;
12745                                 ins->sreg2 = sp [1]->dreg;
12746                                 MONO_ADD_INS (cfg->cbb, ins);
12747
12748                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12749
12750                                 ip += 2;
12751                                 inline_costs += 10 * num_calls++;
12752
12753                                 break;
12754                         }
12755                         case CEE_MONO_MEMORY_BARRIER: {
12756                                 CHECK_OPSIZE (6);
12757                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12758                                 ip += 6;
12759                                 break;
12760                         }
12761                         case CEE_MONO_JIT_ATTACH: {
12762                                 MonoInst *args [16], *domain_ins;
12763                                 MonoInst *ad_ins, *jit_tls_ins;
12764                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12765
12766                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12767                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12768
12769                                 if (mono_threads_is_coop_enabled ()) {
12770                                         /* AOT code is only used in the root domain */
12771                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12772                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12773                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12774                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12775                                 } else {
12776                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12777                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12778
12779                                         ad_ins = mono_get_domain_intrinsic (cfg);
12780                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12781
12782                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12783                                                 NEW_BBLOCK (cfg, next_bb);
12784                                                 NEW_BBLOCK (cfg, call_bb);
12785
12786                                                 if (cfg->compile_aot) {
12787                                                         /* AOT code is only used in the root domain */
12788                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12789                                                 } else {
12790                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12791                                                 }
12792                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12793                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12794                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12795
12796                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12797                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12798                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12799
12800                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12801                                                 MONO_START_BB (cfg, call_bb);
12802                                         }
12803
12804                                         /* AOT code is only used in the root domain */
12805                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12806                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12807                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12808                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12809
12810                                         if (next_bb)
12811                                                 MONO_START_BB (cfg, next_bb);
12812                                 }
12813
12814                                 ip += 2;
12815                                 break;
12816                         }
12817                         case CEE_MONO_JIT_DETACH: {
12818                                 MonoInst *args [16];
12819
12820                                 /* Restore the original domain */
12821                                 dreg = alloc_ireg (cfg);
12822                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12823                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12824                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12825                                 ip += 2;
12826                                 break;
12827                         }
12828                         case CEE_MONO_CALLI_EXTRA_ARG: {
12829                                 MonoInst *addr;
12830                                 MonoMethodSignature *fsig;
12831                                 MonoInst *arg;
12832
12833                                 /*
12834                                  * This is the same as CEE_CALLI, but passes an additional argument
12835                                  * to the called method in llvmonly mode.
12836                                  * This is only used by delegate invoke wrappers to call the
12837                                  * actual delegate method.
12838                                  */
12839                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12840
12841                                 CHECK_OPSIZE (6);
12842                                 token = read32 (ip + 2);
12843
12844                                 ins = NULL;
12845
12846                                 cmethod = NULL;
12847                                 CHECK_STACK (1);
12848                                 --sp;
12849                                 addr = *sp;
12850                                 fsig = mini_get_signature (method, token, generic_context);
12851
12852                                 if (cfg->llvm_only)
12853                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12854
12855                                 n = fsig->param_count + fsig->hasthis + 1;
12856
12857                                 CHECK_STACK (n);
12858
12859                                 sp -= n;
12860                                 arg = sp [n - 1];
12861
12862                                 if (cfg->llvm_only) {
12863                                         /*
12864                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12865                                          * cconv. This is set by mono_init_delegate ().
12866                                          */
12867                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12868                                                 MonoInst *callee = addr;
12869                                                 MonoInst *call, *localloc_ins;
12870                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12871                                                 int low_bit_reg = alloc_preg (cfg);
12872
12873                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12874                                                 NEW_BBLOCK (cfg, end_bb);
12875
12876                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12877                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12878                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12879
12880                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12881                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12882                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12883                                                 /*
12884                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12885                                                  */
12886                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12887                                                 ins->dreg = alloc_preg (cfg);
12888                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12889                                                 MONO_ADD_INS (cfg->cbb, ins);
12890                                                 localloc_ins = ins;
12891                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12892                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12893                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12894
12895                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12896                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12897
12898                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12899                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12900                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12901                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12902                                                 ins->dreg = call->dreg;
12903
12904                                                 MONO_START_BB (cfg, end_bb);
12905                                         } else {
12906                                                 /* Caller uses a normal calling conv */
12907
12908                                                 MonoInst *callee = addr;
12909                                                 MonoInst *call, *localloc_ins;
12910                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12911                                                 int low_bit_reg = alloc_preg (cfg);
12912
12913                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12914                                                 NEW_BBLOCK (cfg, end_bb);
12915
12916                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12917                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12918                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12919
12920                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12921                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12923                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12924                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12925                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12926                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12927                                                 MONO_ADD_INS (cfg->cbb, addr);
12928                                                 /*
12929                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12930                                                  */
12931                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12932                                                 ins->dreg = alloc_preg (cfg);
12933                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12934                                                 MONO_ADD_INS (cfg->cbb, ins);
12935                                                 localloc_ins = ins;
12936                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12937                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12938                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12939
12940                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12941                                                 ins->dreg = call->dreg;
12942                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12943
12944                                                 MONO_START_BB (cfg, end_bb);
12945                                         }
12946                                 } else {
12947                                         /* Same as CEE_CALLI */
12948                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12949                                                 /*
12950                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12951                                                  */
12952                                                 MonoInst *callee = addr;
12953
12954                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12955                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12956                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12957                                         } else {
12958                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12959                                         }
12960                                 }
12961
12962                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12963                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12964
12965                                 CHECK_CFG_EXCEPTION;
12966
12967                                 ip += 6;
12968                                 ins_flag = 0;
12969                                 constrained_class = NULL;
12970                                 break;
12971                         }
12972                         default:
12973                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12974                                 break;
12975                         }
12976                         break;
12977                 }
12978
12979                 case CEE_PREFIX1: {
12980                         CHECK_OPSIZE (2);
12981                         switch (ip [1]) {
12982                         case CEE_ARGLIST: {
12983                                 /* somewhat similar to LDTOKEN */
12984                                 MonoInst *addr, *vtvar;
12985                                 CHECK_STACK_OVF (1);
12986                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12987
12988                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12989                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12990
12991                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12992                                 ins->type = STACK_VTYPE;
12993                                 ins->klass = mono_defaults.argumenthandle_class;
12994                                 *sp++ = ins;
12995                                 ip += 2;
12996                                 break;
12997                         }
12998                         case CEE_CEQ:
12999                         case CEE_CGT:
13000                         case CEE_CGT_UN:
13001                         case CEE_CLT:
13002                         case CEE_CLT_UN: {
13003                                 MonoInst *cmp, *arg1, *arg2;
13004
13005                                 CHECK_STACK (2);
13006                                 sp -= 2;
13007                                 arg1 = sp [0];
13008                                 arg2 = sp [1];
13009
13010                                 /*
13011                                  * The following transforms:
13012                                  *    CEE_CEQ    into OP_CEQ
13013                                  *    CEE_CGT    into OP_CGT
13014                                  *    CEE_CGT_UN into OP_CGT_UN
13015                                  *    CEE_CLT    into OP_CLT
13016                                  *    CEE_CLT_UN into OP_CLT_UN
13017                                  */
13018                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13019
13020                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13021                                 cmp->sreg1 = arg1->dreg;
13022                                 cmp->sreg2 = arg2->dreg;
13023                                 type_from_op (cfg, cmp, arg1, arg2);
13024                                 CHECK_TYPE (cmp);
13025                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13026                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13027                                         cmp->opcode = OP_LCOMPARE;
13028                                 else if (arg1->type == STACK_R4)
13029                                         cmp->opcode = OP_RCOMPARE;
13030                                 else if (arg1->type == STACK_R8)
13031                                         cmp->opcode = OP_FCOMPARE;
13032                                 else
13033                                         cmp->opcode = OP_ICOMPARE;
13034                                 MONO_ADD_INS (cfg->cbb, cmp);
13035                                 ins->type = STACK_I4;
13036                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13037                                 type_from_op (cfg, ins, arg1, arg2);
13038
13039                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13040                                         /*
13041                                          * The backends expect the fceq opcodes to do the
13042                                          * comparison too.
13043                                          */
13044                                         ins->sreg1 = cmp->sreg1;
13045                                         ins->sreg2 = cmp->sreg2;
13046                                         NULLIFY_INS (cmp);
13047                                 }
13048                                 MONO_ADD_INS (cfg->cbb, ins);
13049                                 *sp++ = ins;
13050                                 ip += 2;
13051                                 break;
13052                         }
13053                         case CEE_LDFTN: {
13054                                 MonoInst *argconst;
13055                                 MonoMethod *cil_method;
13056
13057                                 CHECK_STACK_OVF (1);
13058                                 CHECK_OPSIZE (6);
13059                                 n = read32 (ip + 2);
13060                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13061                                 CHECK_CFG_ERROR;
13062
13063                                 mono_class_init (cmethod->klass);
13064
13065                                 mono_save_token_info (cfg, image, n, cmethod);
13066
13067                                 context_used = mini_method_check_context_used (cfg, cmethod);
13068
13069                                 cil_method = cmethod;
13070                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13071                                         METHOD_ACCESS_FAILURE (method, cil_method);
13072
13073                                 if (mono_security_core_clr_enabled ())
13074                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13075
13076                                 /*
13077                                  * Optimize the common case of ldftn+delegate creation
13078                                  */
13079                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13080                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13081                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13082                                                 MonoInst *target_ins, *handle_ins;
13083                                                 MonoMethod *invoke;
13084                                                 int invoke_context_used;
13085
13086                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13087                                                 if (!invoke || !mono_method_signature (invoke))
13088                                                         LOAD_ERROR;
13089
13090                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13091
13092                                                 target_ins = sp [-1];
13093
13094                                                 if (mono_security_core_clr_enabled ())
13095                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13096
13097                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13098                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13099                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13100                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13101                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13102                                                         }
13103                                                 }
13104
13105                                                 /* FIXME: SGEN support */
13106                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13107                                                         ip += 6;
13108                                                         if (cfg->verbose_level > 3)
13109                                                                 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));
13110                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13111                                                                 sp --;
13112                                                                 *sp = handle_ins;
13113                                                                 CHECK_CFG_EXCEPTION;
13114                                                                 ip += 5;
13115                                                                 sp ++;
13116                                                                 break;
13117                                                         }
13118                                                         ip -= 6;
13119                                                 }
13120                                         }
13121                                 }
13122
13123                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13124                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13125                                 *sp++ = ins;
13126
13127                                 ip += 6;
13128                                 inline_costs += 10 * num_calls++;
13129                                 break;
13130                         }
13131                         case CEE_LDVIRTFTN: {
13132                                 MonoInst *args [2];
13133
13134                                 CHECK_STACK (1);
13135                                 CHECK_OPSIZE (6);
13136                                 n = read32 (ip + 2);
13137                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13138                                 CHECK_CFG_ERROR;
13139
13140                                 mono_class_init (cmethod->klass);
13141
13142                                 context_used = mini_method_check_context_used (cfg, cmethod);
13143
13144                                 if (mono_security_core_clr_enabled ())
13145                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13146
13147                                 /*
13148                                  * Optimize the common case of ldvirtftn+delegate creation
13149                                  */
13150                                 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)) {
13151                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13152                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13153                                                 MonoInst *target_ins, *handle_ins;
13154                                                 MonoMethod *invoke;
13155                                                 int invoke_context_used;
13156                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13157
13158                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13159                                                 if (!invoke || !mono_method_signature (invoke))
13160                                                         LOAD_ERROR;
13161
13162                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13163
13164                                                 target_ins = sp [-1];
13165
13166                                                 if (mono_security_core_clr_enabled ())
13167                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13168
13169                                                 /* FIXME: SGEN support */
13170                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13171                                                         ip += 6;
13172                                                         if (cfg->verbose_level > 3)
13173                                                                 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));
13174                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13175                                                                 sp -= 2;
13176                                                                 *sp = handle_ins;
13177                                                                 CHECK_CFG_EXCEPTION;
13178                                                                 ip += 5;
13179                                                                 sp ++;
13180                                                                 break;
13181                                                         }
13182                                                         ip -= 6;
13183                                                 }
13184                                         }
13185                                 }
13186
13187                                 --sp;
13188                                 args [0] = *sp;
13189
13190                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13191                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13192
13193                                 if (context_used)
13194                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13195                                 else
13196                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13197
13198                                 ip += 6;
13199                                 inline_costs += 10 * num_calls++;
13200                                 break;
13201                         }
13202                         case CEE_LDARG:
13203                                 CHECK_STACK_OVF (1);
13204                                 CHECK_OPSIZE (4);
13205                                 n = read16 (ip + 2);
13206                                 CHECK_ARG (n);
13207                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13208                                 *sp++ = ins;
13209                                 ip += 4;
13210                                 break;
13211                         case CEE_LDARGA:
13212                                 CHECK_STACK_OVF (1);
13213                                 CHECK_OPSIZE (4);
13214                                 n = read16 (ip + 2);
13215                                 CHECK_ARG (n);
13216                                 NEW_ARGLOADA (cfg, ins, n);
13217                                 MONO_ADD_INS (cfg->cbb, ins);
13218                                 *sp++ = ins;
13219                                 ip += 4;
13220                                 break;
13221                         case CEE_STARG:
13222                                 CHECK_STACK (1);
13223                                 --sp;
13224                                 CHECK_OPSIZE (4);
13225                                 n = read16 (ip + 2);
13226                                 CHECK_ARG (n);
13227                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13228                                         UNVERIFIED;
13229                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13230                                 ip += 4;
13231                                 break;
13232                         case CEE_LDLOC:
13233                                 CHECK_STACK_OVF (1);
13234                                 CHECK_OPSIZE (4);
13235                                 n = read16 (ip + 2);
13236                                 CHECK_LOCAL (n);
13237                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13238                                 *sp++ = ins;
13239                                 ip += 4;
13240                                 break;
13241                         case CEE_LDLOCA: {
13242                                 unsigned char *tmp_ip;
13243                                 CHECK_STACK_OVF (1);
13244                                 CHECK_OPSIZE (4);
13245                                 n = read16 (ip + 2);
13246                                 CHECK_LOCAL (n);
13247
13248                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13249                                         ip = tmp_ip;
13250                                         inline_costs += 1;
13251                                         break;
13252                                 }
13253
13254                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13255                                 *sp++ = ins;
13256                                 ip += 4;
13257                                 break;
13258                         }
13259                         case CEE_STLOC:
13260                                 CHECK_STACK (1);
13261                                 --sp;
13262                                 CHECK_OPSIZE (4);
13263                                 n = read16 (ip + 2);
13264                                 CHECK_LOCAL (n);
13265                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13266                                         UNVERIFIED;
13267                                 emit_stloc_ir (cfg, sp, header, n);
13268                                 ip += 4;
13269                                 inline_costs += 1;
13270                                 break;
13271                         case CEE_LOCALLOC:
13272                                 CHECK_STACK (1);
13273                                 --sp;
13274                                 if (sp != stack_start)
13275                                         UNVERIFIED;
13276                                 if (cfg->method != method)
13277                                         /*
13278                                          * Inlining this into a loop in a parent could lead to
13279                                          * stack overflows which is different behavior than the
13280                                          * non-inlined case, thus disable inlining in this case.
13281                                          */
13282                                         INLINE_FAILURE("localloc");
13283
13284                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13285                                 ins->dreg = alloc_preg (cfg);
13286                                 ins->sreg1 = sp [0]->dreg;
13287                                 ins->type = STACK_PTR;
13288                                 MONO_ADD_INS (cfg->cbb, ins);
13289
13290                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13291                                 if (init_locals)
13292                                         ins->flags |= MONO_INST_INIT;
13293
13294                                 *sp++ = ins;
13295                                 ip += 2;
13296                                 break;
13297                         case CEE_ENDFILTER: {
13298                                 MonoExceptionClause *clause, *nearest;
13299                                 int cc;
13300
13301                                 CHECK_STACK (1);
13302                                 --sp;
13303                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13304                                         UNVERIFIED;
13305                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13306                                 ins->sreg1 = (*sp)->dreg;
13307                                 MONO_ADD_INS (cfg->cbb, ins);
13308                                 start_new_bblock = 1;
13309                                 ip += 2;
13310
13311                                 nearest = NULL;
13312                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13313                                         clause = &header->clauses [cc];
13314                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13315                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13316                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13317                                                 nearest = clause;
13318                                 }
13319                                 g_assert (nearest);
13320                                 if ((ip - header->code) != nearest->handler_offset)
13321                                         UNVERIFIED;
13322
13323                                 break;
13324                         }
13325                         case CEE_UNALIGNED_:
13326                                 ins_flag |= MONO_INST_UNALIGNED;
13327                                 /* FIXME: record alignment? we can assume 1 for now */
13328                                 CHECK_OPSIZE (3);
13329                                 ip += 3;
13330                                 break;
13331                         case CEE_VOLATILE_:
13332                                 ins_flag |= MONO_INST_VOLATILE;
13333                                 ip += 2;
13334                                 break;
13335                         case CEE_TAIL_:
13336                                 ins_flag   |= MONO_INST_TAILCALL;
13337                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13338                                 /* Can't inline tail calls at this time */
13339                                 inline_costs += 100000;
13340                                 ip += 2;
13341                                 break;
13342                         case CEE_INITOBJ:
13343                                 CHECK_STACK (1);
13344                                 --sp;
13345                                 CHECK_OPSIZE (6);
13346                                 token = read32 (ip + 2);
13347                                 klass = mini_get_class (method, token, generic_context);
13348                                 CHECK_TYPELOAD (klass);
13349                                 if (generic_class_is_reference_type (cfg, klass))
13350                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13351                                 else
13352                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13353                                 ip += 6;
13354                                 inline_costs += 1;
13355                                 break;
13356                         case CEE_CONSTRAINED_:
13357                                 CHECK_OPSIZE (6);
13358                                 token = read32 (ip + 2);
13359                                 constrained_class = mini_get_class (method, token, generic_context);
13360                                 CHECK_TYPELOAD (constrained_class);
13361                                 ip += 6;
13362                                 break;
13363                         case CEE_CPBLK:
13364                         case CEE_INITBLK: {
13365                                 MonoInst *iargs [3];
13366                                 CHECK_STACK (3);
13367                                 sp -= 3;
13368
13369                                 /* Skip optimized paths for volatile operations. */
13370                                 if ((ip [1] == CEE_CPBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
13371                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13372                                 } else if ((ip [1] == CEE_INITBLK) && !(ins_flag & MONO_INST_VOLATILE) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
13373                                         /* emit_memset only works when val == 0 */
13374                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13375                                 } else {
13376                                         MonoInst *call;
13377                                         iargs [0] = sp [0];
13378                                         iargs [1] = sp [1];
13379                                         iargs [2] = sp [2];
13380                                         if (ip [1] == CEE_CPBLK) {
13381                                                 /*
13382                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13383                                                  * and release barriers for cpblk. It is technically both a load and
13384                                                  * store operation, so it seems like that's the sensible thing to do.
13385                                                  *
13386                                                  * FIXME: We emit full barriers on both sides of the operation for
13387                                                  * simplicity. We should have a separate atomic memcpy method instead.
13388                                                  */
13389                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13390
13391                                                 if (ins_flag & MONO_INST_VOLATILE)
13392                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13393
13394                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13395                                                 call->flags |= ins_flag;
13396
13397                                                 if (ins_flag & MONO_INST_VOLATILE)
13398                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13399                                         } else {
13400                                                 MonoMethod *memset_method = get_memset_method ();
13401                                                 if (ins_flag & MONO_INST_VOLATILE) {
13402                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13403                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13404                                                 }
13405                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13406                                                 call->flags |= ins_flag;
13407                                         }
13408                                 }
13409                                 ip += 2;
13410                                 ins_flag = 0;
13411                                 inline_costs += 1;
13412                                 break;
13413                         }
13414                         case CEE_NO_:
13415                                 CHECK_OPSIZE (3);
13416                                 if (ip [2] & 0x1)
13417                                         ins_flag |= MONO_INST_NOTYPECHECK;
13418                                 if (ip [2] & 0x2)
13419                                         ins_flag |= MONO_INST_NORANGECHECK;
13420                                 /* we ignore the no-nullcheck for now since we
13421                                  * really do it explicitly only when doing callvirt->call
13422                                  */
13423                                 ip += 3;
13424                                 break;
13425                         case CEE_RETHROW: {
13426                                 MonoInst *load;
13427                                 int handler_offset = -1;
13428
13429                                 for (i = 0; i < header->num_clauses; ++i) {
13430                                         MonoExceptionClause *clause = &header->clauses [i];
13431                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13432                                                 handler_offset = clause->handler_offset;
13433                                                 break;
13434                                         }
13435                                 }
13436
13437                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13438
13439                                 if (handler_offset == -1)
13440                                         UNVERIFIED;
13441
13442                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13443                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13444                                 ins->sreg1 = load->dreg;
13445                                 MONO_ADD_INS (cfg->cbb, ins);
13446
13447                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13448                                 MONO_ADD_INS (cfg->cbb, ins);
13449
13450                                 sp = stack_start;
13451                                 link_bblock (cfg, cfg->cbb, end_bblock);
13452                                 start_new_bblock = 1;
13453                                 ip += 2;
13454                                 break;
13455                         }
13456                         case CEE_SIZEOF: {
13457                                 guint32 val;
13458                                 int ialign;
13459
13460                                 CHECK_STACK_OVF (1);
13461                                 CHECK_OPSIZE (6);
13462                                 token = read32 (ip + 2);
13463                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13464                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13465                                         CHECK_CFG_ERROR;
13466
13467                                         val = mono_type_size (type, &ialign);
13468                                 } else {
13469                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13470                                         CHECK_TYPELOAD (klass);
13471
13472                                         val = mono_type_size (&klass->byval_arg, &ialign);
13473
13474                                         if (mini_is_gsharedvt_klass (klass))
13475                                                 GSHAREDVT_FAILURE (*ip);
13476                                 }
13477                                 EMIT_NEW_ICONST (cfg, ins, val);
13478                                 *sp++= ins;
13479                                 ip += 6;
13480                                 break;
13481                         }
13482                         case CEE_REFANYTYPE: {
13483                                 MonoInst *src_var, *src;
13484
13485                                 GSHAREDVT_FAILURE (*ip);
13486
13487                                 CHECK_STACK (1);
13488                                 --sp;
13489
13490                                 // FIXME:
13491                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13492                                 if (!src_var)
13493                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13494                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13495                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13496                                 *sp++ = ins;
13497                                 ip += 2;
13498                                 break;
13499                         }
13500                         case CEE_READONLY_:
13501                                 readonly = TRUE;
13502                                 ip += 2;
13503                                 break;
13504
13505                         case CEE_UNUSED56:
13506                         case CEE_UNUSED57:
13507                         case CEE_UNUSED70:
13508                         case CEE_UNUSED:
13509                         case CEE_UNUSED99:
13510                                 UNVERIFIED;
13511
13512                         default:
13513                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13514                                 UNVERIFIED;
13515                         }
13516                         break;
13517                 }
13518                 case CEE_UNUSED58:
13519                 case CEE_UNUSED1:
13520                         UNVERIFIED;
13521
13522                 default:
13523                         g_warning ("opcode 0x%02x not handled", *ip);
13524                         UNVERIFIED;
13525                 }
13526         }
13527         if (start_new_bblock != 1)
13528                 UNVERIFIED;
13529
13530         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13531         if (cfg->cbb->next_bb) {
13532                 /* This could already be set because of inlining, #693905 */
13533                 MonoBasicBlock *bb = cfg->cbb;
13534
13535                 while (bb->next_bb)
13536                         bb = bb->next_bb;
13537                 bb->next_bb = end_bblock;
13538         } else {
13539                 cfg->cbb->next_bb = end_bblock;
13540         }
13541
13542         if (cfg->method == method && cfg->domainvar) {
13543                 MonoInst *store;
13544                 MonoInst *get_domain;
13545
13546                 cfg->cbb = init_localsbb;
13547
13548                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13549                         MONO_ADD_INS (cfg->cbb, get_domain);
13550                 } else {
13551                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13552                 }
13553                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13554                 MONO_ADD_INS (cfg->cbb, store);
13555         }
13556
13557 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13558         if (cfg->compile_aot)
13559                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13560                 mono_get_got_var (cfg);
13561 #endif
13562
13563         if (cfg->method == method && cfg->got_var)
13564                 mono_emit_load_got_addr (cfg);
13565
13566         if (init_localsbb) {
13567                 cfg->cbb = init_localsbb;
13568                 cfg->ip = NULL;
13569                 for (i = 0; i < header->num_locals; ++i) {
13570                         emit_init_local (cfg, i, header->locals [i], init_locals);
13571                 }
13572         }
13573
13574         if (cfg->init_ref_vars && cfg->method == method) {
13575                 /* Emit initialization for ref vars */
13576                 // FIXME: Avoid duplication initialization for IL locals.
13577                 for (i = 0; i < cfg->num_varinfo; ++i) {
13578                         MonoInst *ins = cfg->varinfo [i];
13579
13580                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13581                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13582                 }
13583         }
13584
13585         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13586                 cfg->cbb = init_localsbb;
13587                 emit_push_lmf (cfg);
13588         }
13589
13590         cfg->cbb = init_localsbb;
13591         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13592
13593         if (seq_points) {
13594                 MonoBasicBlock *bb;
13595
13596                 /*
13597                  * Make seq points at backward branch targets interruptable.
13598                  */
13599                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13600                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13601                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13602         }
13603
13604         /* Add a sequence point for method entry/exit events */
13605         if (seq_points && cfg->gen_sdb_seq_points) {
13606                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13607                 MONO_ADD_INS (init_localsbb, ins);
13608                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13609                 MONO_ADD_INS (cfg->bb_exit, ins);
13610         }
13611
13612         /*
13613          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13614          * the code they refer to was dead (#11880).
13615          */
13616         if (sym_seq_points) {
13617                 for (i = 0; i < header->code_size; ++i) {
13618                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13619                                 MonoInst *ins;
13620
13621                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13622                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13623                         }
13624                 }
13625         }
13626
13627         cfg->ip = NULL;
13628
13629         if (cfg->method == method) {
13630                 MonoBasicBlock *bb;
13631                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13632                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13633                         if (cfg->spvars)
13634                                 mono_create_spvar_for_region (cfg, bb->region);
13635                         if (cfg->verbose_level > 2)
13636                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13637                 }
13638         } else {
13639                 MonoBasicBlock *bb;
13640                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13641                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13642                         bb->real_offset = inline_offset;
13643                 }
13644         }
13645
13646         if (inline_costs < 0) {
13647                 char *mname;
13648
13649                 /* Method is too large */
13650                 mname = mono_method_full_name (method, TRUE);
13651                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13652                 g_free (mname);
13653         }
13654
13655         if ((cfg->verbose_level > 2) && (cfg->method == method))
13656                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13657
13658         goto cleanup;
13659
13660 mono_error_exit:
13661         g_assert (!mono_error_ok (&cfg->error));
13662         goto cleanup;
13663
13664  exception_exit:
13665         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13666         goto cleanup;
13667
13668  unverified:
13669         set_exception_type_from_invalid_il (cfg, method, ip);
13670         goto cleanup;
13671
13672  cleanup:
13673         g_slist_free (class_inits);
13674         mono_basic_block_free (original_bb);
13675         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13676         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13677         if (cfg->exception_type)
13678                 return -1;
13679         else
13680                 return inline_costs;
13681 }
13682
13683 static int
13684 store_membase_reg_to_store_membase_imm (int opcode)
13685 {
13686         switch (opcode) {
13687         case OP_STORE_MEMBASE_REG:
13688                 return OP_STORE_MEMBASE_IMM;
13689         case OP_STOREI1_MEMBASE_REG:
13690                 return OP_STOREI1_MEMBASE_IMM;
13691         case OP_STOREI2_MEMBASE_REG:
13692                 return OP_STOREI2_MEMBASE_IMM;
13693         case OP_STOREI4_MEMBASE_REG:
13694                 return OP_STOREI4_MEMBASE_IMM;
13695         case OP_STOREI8_MEMBASE_REG:
13696                 return OP_STOREI8_MEMBASE_IMM;
13697         default:
13698                 g_assert_not_reached ();
13699         }
13700
13701         return -1;
13702 }
13703
13704 int
13705 mono_op_to_op_imm (int opcode)
13706 {
13707         switch (opcode) {
13708         case OP_IADD:
13709                 return OP_IADD_IMM;
13710         case OP_ISUB:
13711                 return OP_ISUB_IMM;
13712         case OP_IDIV:
13713                 return OP_IDIV_IMM;
13714         case OP_IDIV_UN:
13715                 return OP_IDIV_UN_IMM;
13716         case OP_IREM:
13717                 return OP_IREM_IMM;
13718         case OP_IREM_UN:
13719                 return OP_IREM_UN_IMM;
13720         case OP_IMUL:
13721                 return OP_IMUL_IMM;
13722         case OP_IAND:
13723                 return OP_IAND_IMM;
13724         case OP_IOR:
13725                 return OP_IOR_IMM;
13726         case OP_IXOR:
13727                 return OP_IXOR_IMM;
13728         case OP_ISHL:
13729                 return OP_ISHL_IMM;
13730         case OP_ISHR:
13731                 return OP_ISHR_IMM;
13732         case OP_ISHR_UN:
13733                 return OP_ISHR_UN_IMM;
13734
13735         case OP_LADD:
13736                 return OP_LADD_IMM;
13737         case OP_LSUB:
13738                 return OP_LSUB_IMM;
13739         case OP_LAND:
13740                 return OP_LAND_IMM;
13741         case OP_LOR:
13742                 return OP_LOR_IMM;
13743         case OP_LXOR:
13744                 return OP_LXOR_IMM;
13745         case OP_LSHL:
13746                 return OP_LSHL_IMM;
13747         case OP_LSHR:
13748                 return OP_LSHR_IMM;
13749         case OP_LSHR_UN:
13750                 return OP_LSHR_UN_IMM;
13751 #if SIZEOF_REGISTER == 8
13752         case OP_LREM:
13753                 return OP_LREM_IMM;
13754 #endif
13755
13756         case OP_COMPARE:
13757                 return OP_COMPARE_IMM;
13758         case OP_ICOMPARE:
13759                 return OP_ICOMPARE_IMM;
13760         case OP_LCOMPARE:
13761                 return OP_LCOMPARE_IMM;
13762
13763         case OP_STORE_MEMBASE_REG:
13764                 return OP_STORE_MEMBASE_IMM;
13765         case OP_STOREI1_MEMBASE_REG:
13766                 return OP_STOREI1_MEMBASE_IMM;
13767         case OP_STOREI2_MEMBASE_REG:
13768                 return OP_STOREI2_MEMBASE_IMM;
13769         case OP_STOREI4_MEMBASE_REG:
13770                 return OP_STOREI4_MEMBASE_IMM;
13771
13772 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13773         case OP_X86_PUSH:
13774                 return OP_X86_PUSH_IMM;
13775         case OP_X86_COMPARE_MEMBASE_REG:
13776                 return OP_X86_COMPARE_MEMBASE_IMM;
13777 #endif
13778 #if defined(TARGET_AMD64)
13779         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13780                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13781 #endif
13782         case OP_VOIDCALL_REG:
13783                 return OP_VOIDCALL;
13784         case OP_CALL_REG:
13785                 return OP_CALL;
13786         case OP_LCALL_REG:
13787                 return OP_LCALL;
13788         case OP_FCALL_REG:
13789                 return OP_FCALL;
13790         case OP_LOCALLOC:
13791                 return OP_LOCALLOC_IMM;
13792         }
13793
13794         return -1;
13795 }
13796
13797 static int
13798 ldind_to_load_membase (int opcode)
13799 {
13800         switch (opcode) {
13801         case CEE_LDIND_I1:
13802                 return OP_LOADI1_MEMBASE;
13803         case CEE_LDIND_U1:
13804                 return OP_LOADU1_MEMBASE;
13805         case CEE_LDIND_I2:
13806                 return OP_LOADI2_MEMBASE;
13807         case CEE_LDIND_U2:
13808                 return OP_LOADU2_MEMBASE;
13809         case CEE_LDIND_I4:
13810                 return OP_LOADI4_MEMBASE;
13811         case CEE_LDIND_U4:
13812                 return OP_LOADU4_MEMBASE;
13813         case CEE_LDIND_I:
13814                 return OP_LOAD_MEMBASE;
13815         case CEE_LDIND_REF:
13816                 return OP_LOAD_MEMBASE;
13817         case CEE_LDIND_I8:
13818                 return OP_LOADI8_MEMBASE;
13819         case CEE_LDIND_R4:
13820                 return OP_LOADR4_MEMBASE;
13821         case CEE_LDIND_R8:
13822                 return OP_LOADR8_MEMBASE;
13823         default:
13824                 g_assert_not_reached ();
13825         }
13826
13827         return -1;
13828 }
13829
13830 static int
13831 stind_to_store_membase (int opcode)
13832 {
13833         switch (opcode) {
13834         case CEE_STIND_I1:
13835                 return OP_STOREI1_MEMBASE_REG;
13836         case CEE_STIND_I2:
13837                 return OP_STOREI2_MEMBASE_REG;
13838         case CEE_STIND_I4:
13839                 return OP_STOREI4_MEMBASE_REG;
13840         case CEE_STIND_I:
13841         case CEE_STIND_REF:
13842                 return OP_STORE_MEMBASE_REG;
13843         case CEE_STIND_I8:
13844                 return OP_STOREI8_MEMBASE_REG;
13845         case CEE_STIND_R4:
13846                 return OP_STORER4_MEMBASE_REG;
13847         case CEE_STIND_R8:
13848                 return OP_STORER8_MEMBASE_REG;
13849         default:
13850                 g_assert_not_reached ();
13851         }
13852
13853         return -1;
13854 }
13855
13856 int
13857 mono_load_membase_to_load_mem (int opcode)
13858 {
13859         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13860 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13861         switch (opcode) {
13862         case OP_LOAD_MEMBASE:
13863                 return OP_LOAD_MEM;
13864         case OP_LOADU1_MEMBASE:
13865                 return OP_LOADU1_MEM;
13866         case OP_LOADU2_MEMBASE:
13867                 return OP_LOADU2_MEM;
13868         case OP_LOADI4_MEMBASE:
13869                 return OP_LOADI4_MEM;
13870         case OP_LOADU4_MEMBASE:
13871                 return OP_LOADU4_MEM;
13872 #if SIZEOF_REGISTER == 8
13873         case OP_LOADI8_MEMBASE:
13874                 return OP_LOADI8_MEM;
13875 #endif
13876         }
13877 #endif
13878
13879         return -1;
13880 }
13881
13882 static inline int
13883 op_to_op_dest_membase (int store_opcode, int opcode)
13884 {
13885 #if defined(TARGET_X86)
13886         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13887                 return -1;
13888
13889         switch (opcode) {
13890         case OP_IADD:
13891                 return OP_X86_ADD_MEMBASE_REG;
13892         case OP_ISUB:
13893                 return OP_X86_SUB_MEMBASE_REG;
13894         case OP_IAND:
13895                 return OP_X86_AND_MEMBASE_REG;
13896         case OP_IOR:
13897                 return OP_X86_OR_MEMBASE_REG;
13898         case OP_IXOR:
13899                 return OP_X86_XOR_MEMBASE_REG;
13900         case OP_ADD_IMM:
13901         case OP_IADD_IMM:
13902                 return OP_X86_ADD_MEMBASE_IMM;
13903         case OP_SUB_IMM:
13904         case OP_ISUB_IMM:
13905                 return OP_X86_SUB_MEMBASE_IMM;
13906         case OP_AND_IMM:
13907         case OP_IAND_IMM:
13908                 return OP_X86_AND_MEMBASE_IMM;
13909         case OP_OR_IMM:
13910         case OP_IOR_IMM:
13911                 return OP_X86_OR_MEMBASE_IMM;
13912         case OP_XOR_IMM:
13913         case OP_IXOR_IMM:
13914                 return OP_X86_XOR_MEMBASE_IMM;
13915         case OP_MOVE:
13916                 return OP_NOP;
13917         }
13918 #endif
13919
13920 #if defined(TARGET_AMD64)
13921         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13922                 return -1;
13923
13924         switch (opcode) {
13925         case OP_IADD:
13926                 return OP_X86_ADD_MEMBASE_REG;
13927         case OP_ISUB:
13928                 return OP_X86_SUB_MEMBASE_REG;
13929         case OP_IAND:
13930                 return OP_X86_AND_MEMBASE_REG;
13931         case OP_IOR:
13932                 return OP_X86_OR_MEMBASE_REG;
13933         case OP_IXOR:
13934                 return OP_X86_XOR_MEMBASE_REG;
13935         case OP_IADD_IMM:
13936                 return OP_X86_ADD_MEMBASE_IMM;
13937         case OP_ISUB_IMM:
13938                 return OP_X86_SUB_MEMBASE_IMM;
13939         case OP_IAND_IMM:
13940                 return OP_X86_AND_MEMBASE_IMM;
13941         case OP_IOR_IMM:
13942                 return OP_X86_OR_MEMBASE_IMM;
13943         case OP_IXOR_IMM:
13944                 return OP_X86_XOR_MEMBASE_IMM;
13945         case OP_LADD:
13946                 return OP_AMD64_ADD_MEMBASE_REG;
13947         case OP_LSUB:
13948                 return OP_AMD64_SUB_MEMBASE_REG;
13949         case OP_LAND:
13950                 return OP_AMD64_AND_MEMBASE_REG;
13951         case OP_LOR:
13952                 return OP_AMD64_OR_MEMBASE_REG;
13953         case OP_LXOR:
13954                 return OP_AMD64_XOR_MEMBASE_REG;
13955         case OP_ADD_IMM:
13956         case OP_LADD_IMM:
13957                 return OP_AMD64_ADD_MEMBASE_IMM;
13958         case OP_SUB_IMM:
13959         case OP_LSUB_IMM:
13960                 return OP_AMD64_SUB_MEMBASE_IMM;
13961         case OP_AND_IMM:
13962         case OP_LAND_IMM:
13963                 return OP_AMD64_AND_MEMBASE_IMM;
13964         case OP_OR_IMM:
13965         case OP_LOR_IMM:
13966                 return OP_AMD64_OR_MEMBASE_IMM;
13967         case OP_XOR_IMM:
13968         case OP_LXOR_IMM:
13969                 return OP_AMD64_XOR_MEMBASE_IMM;
13970         case OP_MOVE:
13971                 return OP_NOP;
13972         }
13973 #endif
13974
13975         return -1;
13976 }
13977
13978 static inline int
13979 op_to_op_store_membase (int store_opcode, int opcode)
13980 {
13981 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13982         switch (opcode) {
13983         case OP_ICEQ:
13984                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13985                         return OP_X86_SETEQ_MEMBASE;
13986         case OP_CNE:
13987                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13988                         return OP_X86_SETNE_MEMBASE;
13989         }
13990 #endif
13991
13992         return -1;
13993 }
13994
13995 static inline int
13996 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13997 {
13998 #ifdef TARGET_X86
13999         /* FIXME: This has sign extension issues */
14000         /*
14001         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14002                 return OP_X86_COMPARE_MEMBASE8_IMM;
14003         */
14004
14005         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14006                 return -1;
14007
14008         switch (opcode) {
14009         case OP_X86_PUSH:
14010                 return OP_X86_PUSH_MEMBASE;
14011         case OP_COMPARE_IMM:
14012         case OP_ICOMPARE_IMM:
14013                 return OP_X86_COMPARE_MEMBASE_IMM;
14014         case OP_COMPARE:
14015         case OP_ICOMPARE:
14016                 return OP_X86_COMPARE_MEMBASE_REG;
14017         }
14018 #endif
14019
14020 #ifdef TARGET_AMD64
14021         /* FIXME: This has sign extension issues */
14022         /*
14023         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14024                 return OP_X86_COMPARE_MEMBASE8_IMM;
14025         */
14026
14027         switch (opcode) {
14028         case OP_X86_PUSH:
14029                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14030                         return OP_X86_PUSH_MEMBASE;
14031                 break;
14032                 /* FIXME: This only works for 32 bit immediates
14033         case OP_COMPARE_IMM:
14034         case OP_LCOMPARE_IMM:
14035                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14036                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14037                 */
14038         case OP_ICOMPARE_IMM:
14039                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14040                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14041                 break;
14042         case OP_COMPARE:
14043         case OP_LCOMPARE:
14044                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14045                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14046                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14047                         return OP_AMD64_COMPARE_MEMBASE_REG;
14048                 break;
14049         case OP_ICOMPARE:
14050                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14051                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14052                 break;
14053         }
14054 #endif
14055
14056         return -1;
14057 }
14058
14059 static inline int
14060 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14061 {
14062 #ifdef TARGET_X86
14063         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14064                 return -1;
14065
14066         switch (opcode) {
14067         case OP_COMPARE:
14068         case OP_ICOMPARE:
14069                 return OP_X86_COMPARE_REG_MEMBASE;
14070         case OP_IADD:
14071                 return OP_X86_ADD_REG_MEMBASE;
14072         case OP_ISUB:
14073                 return OP_X86_SUB_REG_MEMBASE;
14074         case OP_IAND:
14075                 return OP_X86_AND_REG_MEMBASE;
14076         case OP_IOR:
14077                 return OP_X86_OR_REG_MEMBASE;
14078         case OP_IXOR:
14079                 return OP_X86_XOR_REG_MEMBASE;
14080         }
14081 #endif
14082
14083 #ifdef TARGET_AMD64
14084         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14085                 switch (opcode) {
14086                 case OP_ICOMPARE:
14087                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14088                 case OP_IADD:
14089                         return OP_X86_ADD_REG_MEMBASE;
14090                 case OP_ISUB:
14091                         return OP_X86_SUB_REG_MEMBASE;
14092                 case OP_IAND:
14093                         return OP_X86_AND_REG_MEMBASE;
14094                 case OP_IOR:
14095                         return OP_X86_OR_REG_MEMBASE;
14096                 case OP_IXOR:
14097                         return OP_X86_XOR_REG_MEMBASE;
14098                 }
14099         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14100                 switch (opcode) {
14101                 case OP_COMPARE:
14102                 case OP_LCOMPARE:
14103                         return OP_AMD64_COMPARE_REG_MEMBASE;
14104                 case OP_LADD:
14105                         return OP_AMD64_ADD_REG_MEMBASE;
14106                 case OP_LSUB:
14107                         return OP_AMD64_SUB_REG_MEMBASE;
14108                 case OP_LAND:
14109                         return OP_AMD64_AND_REG_MEMBASE;
14110                 case OP_LOR:
14111                         return OP_AMD64_OR_REG_MEMBASE;
14112                 case OP_LXOR:
14113                         return OP_AMD64_XOR_REG_MEMBASE;
14114                 }
14115         }
14116 #endif
14117
14118         return -1;
14119 }
14120
14121 int
14122 mono_op_to_op_imm_noemul (int opcode)
14123 {
14124         switch (opcode) {
14125 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14126         case OP_LSHR:
14127         case OP_LSHL:
14128         case OP_LSHR_UN:
14129                 return -1;
14130 #endif
14131 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14132         case OP_IDIV:
14133         case OP_IDIV_UN:
14134         case OP_IREM:
14135         case OP_IREM_UN:
14136                 return -1;
14137 #endif
14138 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14139         case OP_IMUL:
14140                 return -1;
14141 #endif
14142         default:
14143                 return mono_op_to_op_imm (opcode);
14144         }
14145 }
14146
14147 /**
14148  * mono_handle_global_vregs:
14149  *
14150  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14151  * for them.
14152  */
14153 void
14154 mono_handle_global_vregs (MonoCompile *cfg)
14155 {
14156         gint32 *vreg_to_bb;
14157         MonoBasicBlock *bb;
14158         int i, pos;
14159
14160         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14161
14162 #ifdef MONO_ARCH_SIMD_INTRINSICS
14163         if (cfg->uses_simd_intrinsics)
14164                 mono_simd_simplify_indirection (cfg);
14165 #endif
14166
14167         /* Find local vregs used in more than one bb */
14168         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14169                 MonoInst *ins = bb->code;
14170                 int block_num = bb->block_num;
14171
14172                 if (cfg->verbose_level > 2)
14173                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14174
14175                 cfg->cbb = bb;
14176                 for (; ins; ins = ins->next) {
14177                         const char *spec = INS_INFO (ins->opcode);
14178                         int regtype = 0, regindex;
14179                         gint32 prev_bb;
14180
14181                         if (G_UNLIKELY (cfg->verbose_level > 2))
14182                                 mono_print_ins (ins);
14183
14184                         g_assert (ins->opcode >= MONO_CEE_LAST);
14185
14186                         for (regindex = 0; regindex < 4; regindex ++) {
14187                                 int vreg = 0;
14188
14189                                 if (regindex == 0) {
14190                                         regtype = spec [MONO_INST_DEST];
14191                                         if (regtype == ' ')
14192                                                 continue;
14193                                         vreg = ins->dreg;
14194                                 } else if (regindex == 1) {
14195                                         regtype = spec [MONO_INST_SRC1];
14196                                         if (regtype == ' ')
14197                                                 continue;
14198                                         vreg = ins->sreg1;
14199                                 } else if (regindex == 2) {
14200                                         regtype = spec [MONO_INST_SRC2];
14201                                         if (regtype == ' ')
14202                                                 continue;
14203                                         vreg = ins->sreg2;
14204                                 } else if (regindex == 3) {
14205                                         regtype = spec [MONO_INST_SRC3];
14206                                         if (regtype == ' ')
14207                                                 continue;
14208                                         vreg = ins->sreg3;
14209                                 }
14210
14211 #if SIZEOF_REGISTER == 4
14212                                 /* In the LLVM case, the long opcodes are not decomposed */
14213                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14214                                         /*
14215                                          * Since some instructions reference the original long vreg,
14216                                          * and some reference the two component vregs, it is quite hard
14217                                          * to determine when it needs to be global. So be conservative.
14218                                          */
14219                                         if (!get_vreg_to_inst (cfg, vreg)) {
14220                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14221
14222                                                 if (cfg->verbose_level > 2)
14223                                                         printf ("LONG VREG R%d made global.\n", vreg);
14224                                         }
14225
14226                                         /*
14227                                          * Make the component vregs volatile since the optimizations can
14228                                          * get confused otherwise.
14229                                          */
14230                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14231                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14232                                 }
14233 #endif
14234
14235                                 g_assert (vreg != -1);
14236
14237                                 prev_bb = vreg_to_bb [vreg];
14238                                 if (prev_bb == 0) {
14239                                         /* 0 is a valid block num */
14240                                         vreg_to_bb [vreg] = block_num + 1;
14241                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14242                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14243                                                 continue;
14244
14245                                         if (!get_vreg_to_inst (cfg, vreg)) {
14246                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14247                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14248
14249                                                 switch (regtype) {
14250                                                 case 'i':
14251                                                         if (vreg_is_ref (cfg, vreg))
14252                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14253                                                         else
14254                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14255                                                         break;
14256                                                 case 'l':
14257                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14258                                                         break;
14259                                                 case 'f':
14260                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14261                                                         break;
14262                                                 case 'v':
14263                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14264                                                         break;
14265                                                 default:
14266                                                         g_assert_not_reached ();
14267                                                 }
14268                                         }
14269
14270                                         /* Flag as having been used in more than one bb */
14271                                         vreg_to_bb [vreg] = -1;
14272                                 }
14273                         }
14274                 }
14275         }
14276
14277         /* If a variable is used in only one bblock, convert it into a local vreg */
14278         for (i = 0; i < cfg->num_varinfo; i++) {
14279                 MonoInst *var = cfg->varinfo [i];
14280                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14281
14282                 switch (var->type) {
14283                 case STACK_I4:
14284                 case STACK_OBJ:
14285                 case STACK_PTR:
14286                 case STACK_MP:
14287                 case STACK_VTYPE:
14288 #if SIZEOF_REGISTER == 8
14289                 case STACK_I8:
14290 #endif
14291 #if !defined(TARGET_X86)
14292                 /* Enabling this screws up the fp stack on x86 */
14293                 case STACK_R8:
14294 #endif
14295                         if (mono_arch_is_soft_float ())
14296                                 break;
14297
14298                         /*
14299                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14300                                 break;
14301                         */
14302
14303                         /* Arguments are implicitly global */
14304                         /* Putting R4 vars into registers doesn't work currently */
14305                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14306                         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) {
14307                                 /*
14308                                  * Make that the variable's liveness interval doesn't contain a call, since
14309                                  * that would cause the lvreg to be spilled, making the whole optimization
14310                                  * useless.
14311                                  */
14312                                 /* This is too slow for JIT compilation */
14313 #if 0
14314                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14315                                         MonoInst *ins;
14316                                         int def_index, call_index, ins_index;
14317                                         gboolean spilled = FALSE;
14318
14319                                         def_index = -1;
14320                                         call_index = -1;
14321                                         ins_index = 0;
14322                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14323                                                 const char *spec = INS_INFO (ins->opcode);
14324
14325                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14326                                                         def_index = ins_index;
14327
14328                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14329                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14330                                                         if (call_index > def_index) {
14331                                                                 spilled = TRUE;
14332                                                                 break;
14333                                                         }
14334                                                 }
14335
14336                                                 if (MONO_IS_CALL (ins))
14337                                                         call_index = ins_index;
14338
14339                                                 ins_index ++;
14340                                         }
14341
14342                                         if (spilled)
14343                                                 break;
14344                                 }
14345 #endif
14346
14347                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14348                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14349                                 var->flags |= MONO_INST_IS_DEAD;
14350                                 cfg->vreg_to_inst [var->dreg] = NULL;
14351                         }
14352                         break;
14353                 }
14354         }
14355
14356         /*
14357          * Compress the varinfo and vars tables so the liveness computation is faster and
14358          * takes up less space.
14359          */
14360         pos = 0;
14361         for (i = 0; i < cfg->num_varinfo; ++i) {
14362                 MonoInst *var = cfg->varinfo [i];
14363                 if (pos < i && cfg->locals_start == i)
14364                         cfg->locals_start = pos;
14365                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14366                         if (pos < i) {
14367                                 cfg->varinfo [pos] = cfg->varinfo [i];
14368                                 cfg->varinfo [pos]->inst_c0 = pos;
14369                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14370                                 cfg->vars [pos].idx = pos;
14371 #if SIZEOF_REGISTER == 4
14372                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14373                                         /* Modify the two component vars too */
14374                                         MonoInst *var1;
14375
14376                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14377                                         var1->inst_c0 = pos;
14378                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14379                                         var1->inst_c0 = pos;
14380                                 }
14381 #endif
14382                         }
14383                         pos ++;
14384                 }
14385         }
14386         cfg->num_varinfo = pos;
14387         if (cfg->locals_start > cfg->num_varinfo)
14388                 cfg->locals_start = cfg->num_varinfo;
14389 }
14390
14391 /*
14392  * mono_allocate_gsharedvt_vars:
14393  *
14394  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14395  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14396  */
14397 void
14398 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14399 {
14400         int i;
14401
14402         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14403
14404         for (i = 0; i < cfg->num_varinfo; ++i) {
14405                 MonoInst *ins = cfg->varinfo [i];
14406                 int idx;
14407
14408                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14409                         if (i >= cfg->locals_start) {
14410                                 /* Local */
14411                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14412                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14413                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14414                                 ins->inst_imm = idx;
14415                         } else {
14416                                 /* Arg */
14417                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14418                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14419                         }
14420                 }
14421         }
14422 }
14423
14424 /**
14425  * mono_spill_global_vars:
14426  *
14427  *   Generate spill code for variables which are not allocated to registers,
14428  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14429  * code is generated which could be optimized by the local optimization passes.
14430  */
14431 void
14432 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14433 {
14434         MonoBasicBlock *bb;
14435         char spec2 [16];
14436         int orig_next_vreg;
14437         guint32 *vreg_to_lvreg;
14438         guint32 *lvregs;
14439         guint32 i, lvregs_len;
14440         gboolean dest_has_lvreg = FALSE;
14441         MonoStackType stacktypes [128];
14442         MonoInst **live_range_start, **live_range_end;
14443         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14444
14445         *need_local_opts = FALSE;
14446
14447         memset (spec2, 0, sizeof (spec2));
14448
14449         /* FIXME: Move this function to mini.c */
14450         stacktypes ['i'] = STACK_PTR;
14451         stacktypes ['l'] = STACK_I8;
14452         stacktypes ['f'] = STACK_R8;
14453 #ifdef MONO_ARCH_SIMD_INTRINSICS
14454         stacktypes ['x'] = STACK_VTYPE;
14455 #endif
14456
14457 #if SIZEOF_REGISTER == 4
14458         /* Create MonoInsts for longs */
14459         for (i = 0; i < cfg->num_varinfo; i++) {
14460                 MonoInst *ins = cfg->varinfo [i];
14461
14462                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14463                         switch (ins->type) {
14464                         case STACK_R8:
14465                         case STACK_I8: {
14466                                 MonoInst *tree;
14467
14468                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14469                                         break;
14470
14471                                 g_assert (ins->opcode == OP_REGOFFSET);
14472
14473                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14474                                 g_assert (tree);
14475                                 tree->opcode = OP_REGOFFSET;
14476                                 tree->inst_basereg = ins->inst_basereg;
14477                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14478
14479                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14480                                 g_assert (tree);
14481                                 tree->opcode = OP_REGOFFSET;
14482                                 tree->inst_basereg = ins->inst_basereg;
14483                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14484                                 break;
14485                         }
14486                         default:
14487                                 break;
14488                         }
14489                 }
14490         }
14491 #endif
14492
14493         if (cfg->compute_gc_maps) {
14494                 /* registers need liveness info even for !non refs */
14495                 for (i = 0; i < cfg->num_varinfo; i++) {
14496                         MonoInst *ins = cfg->varinfo [i];
14497
14498                         if (ins->opcode == OP_REGVAR)
14499                                 ins->flags |= MONO_INST_GC_TRACK;
14500                 }
14501         }
14502
14503         /* FIXME: widening and truncation */
14504
14505         /*
14506          * As an optimization, when a variable allocated to the stack is first loaded into
14507          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14508          * the variable again.
14509          */
14510         orig_next_vreg = cfg->next_vreg;
14511         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14512         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14513         lvregs_len = 0;
14514
14515         /*
14516          * These arrays contain the first and last instructions accessing a given
14517          * variable.
14518          * Since we emit bblocks in the same order we process them here, and we
14519          * don't split live ranges, these will precisely describe the live range of
14520          * the variable, i.e. the instruction range where a valid value can be found
14521          * in the variables location.
14522          * The live range is computed using the liveness info computed by the liveness pass.
14523          * We can't use vmv->range, since that is an abstract live range, and we need
14524          * one which is instruction precise.
14525          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14526          */
14527         /* FIXME: Only do this if debugging info is requested */
14528         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14529         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14530         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14531         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14532
14533         /* Add spill loads/stores */
14534         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14535                 MonoInst *ins;
14536
14537                 if (cfg->verbose_level > 2)
14538                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14539
14540                 /* Clear vreg_to_lvreg array */
14541                 for (i = 0; i < lvregs_len; i++)
14542                         vreg_to_lvreg [lvregs [i]] = 0;
14543                 lvregs_len = 0;
14544
14545                 cfg->cbb = bb;
14546                 MONO_BB_FOR_EACH_INS (bb, ins) {
14547                         const char *spec = INS_INFO (ins->opcode);
14548                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14549                         gboolean store, no_lvreg;
14550                         int sregs [MONO_MAX_SRC_REGS];
14551
14552                         if (G_UNLIKELY (cfg->verbose_level > 2))
14553                                 mono_print_ins (ins);
14554
14555                         if (ins->opcode == OP_NOP)
14556                                 continue;
14557
14558                         /*
14559                          * We handle LDADDR here as well, since it can only be decomposed
14560                          * when variable addresses are known.
14561                          */
14562                         if (ins->opcode == OP_LDADDR) {
14563                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14564
14565                                 if (var->opcode == OP_VTARG_ADDR) {
14566                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14567                                         MonoInst *vtaddr = var->inst_left;
14568                                         if (vtaddr->opcode == OP_REGVAR) {
14569                                                 ins->opcode = OP_MOVE;
14570                                                 ins->sreg1 = vtaddr->dreg;
14571                                         }
14572                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14573                                                 ins->opcode = OP_LOAD_MEMBASE;
14574                                                 ins->inst_basereg = vtaddr->inst_basereg;
14575                                                 ins->inst_offset = vtaddr->inst_offset;
14576                                         } else
14577                                                 NOT_IMPLEMENTED;
14578                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14579                                         /* gsharedvt arg passed by ref */
14580                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14581
14582                                         ins->opcode = OP_LOAD_MEMBASE;
14583                                         ins->inst_basereg = var->inst_basereg;
14584                                         ins->inst_offset = var->inst_offset;
14585                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14586                                         MonoInst *load, *load2, *load3;
14587                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14588                                         int reg1, reg2, reg3;
14589                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14590                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14591
14592                                         /*
14593                                          * gsharedvt local.
14594                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14595                                          */
14596
14597                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14598
14599                                         g_assert (info_var);
14600                                         g_assert (locals_var);
14601
14602                                         /* Mark the instruction used to compute the locals var as used */
14603                                         cfg->gsharedvt_locals_var_ins = NULL;
14604
14605                                         /* Load the offset */
14606                                         if (info_var->opcode == OP_REGOFFSET) {
14607                                                 reg1 = alloc_ireg (cfg);
14608                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14609                                         } else if (info_var->opcode == OP_REGVAR) {
14610                                                 load = NULL;
14611                                                 reg1 = info_var->dreg;
14612                                         } else {
14613                                                 g_assert_not_reached ();
14614                                         }
14615                                         reg2 = alloc_ireg (cfg);
14616                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14617                                         /* Load the locals area address */
14618                                         reg3 = alloc_ireg (cfg);
14619                                         if (locals_var->opcode == OP_REGOFFSET) {
14620                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14621                                         } else if (locals_var->opcode == OP_REGVAR) {
14622                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14623                                         } else {
14624                                                 g_assert_not_reached ();
14625                                         }
14626                                         /* Compute the address */
14627                                         ins->opcode = OP_PADD;
14628                                         ins->sreg1 = reg3;
14629                                         ins->sreg2 = reg2;
14630
14631                                         mono_bblock_insert_before_ins (bb, ins, load3);
14632                                         mono_bblock_insert_before_ins (bb, load3, load2);
14633                                         if (load)
14634                                                 mono_bblock_insert_before_ins (bb, load2, load);
14635                                 } else {
14636                                         g_assert (var->opcode == OP_REGOFFSET);
14637
14638                                         ins->opcode = OP_ADD_IMM;
14639                                         ins->sreg1 = var->inst_basereg;
14640                                         ins->inst_imm = var->inst_offset;
14641                                 }
14642
14643                                 *need_local_opts = TRUE;
14644                                 spec = INS_INFO (ins->opcode);
14645                         }
14646
14647                         if (ins->opcode < MONO_CEE_LAST) {
14648                                 mono_print_ins (ins);
14649                                 g_assert_not_reached ();
14650                         }
14651
14652                         /*
14653                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14654                          * src register.
14655                          * FIXME:
14656                          */
14657                         if (MONO_IS_STORE_MEMBASE (ins)) {
14658                                 tmp_reg = ins->dreg;
14659                                 ins->dreg = ins->sreg2;
14660                                 ins->sreg2 = tmp_reg;
14661                                 store = TRUE;
14662
14663                                 spec2 [MONO_INST_DEST] = ' ';
14664                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14665                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14666                                 spec2 [MONO_INST_SRC3] = ' ';
14667                                 spec = spec2;
14668                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14669                                 g_assert_not_reached ();
14670                         else
14671                                 store = FALSE;
14672                         no_lvreg = FALSE;
14673
14674                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14675                                 printf ("\t %.3s %d", spec, ins->dreg);
14676                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14677                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14678                                         printf (" %d", sregs [srcindex]);
14679                                 printf ("\n");
14680                         }
14681
14682                         /***************/
14683                         /*    DREG     */
14684                         /***************/
14685                         regtype = spec [MONO_INST_DEST];
14686                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14687                         prev_dreg = -1;
14688
14689                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14690                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14691                                 MonoInst *store_ins;
14692                                 int store_opcode;
14693                                 MonoInst *def_ins = ins;
14694                                 int dreg = ins->dreg; /* The original vreg */
14695
14696                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14697
14698                                 if (var->opcode == OP_REGVAR) {
14699                                         ins->dreg = var->dreg;
14700                                 } 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)) {
14701                                         /*
14702                                          * Instead of emitting a load+store, use a _membase opcode.
14703                                          */
14704                                         g_assert (var->opcode == OP_REGOFFSET);
14705                                         if (ins->opcode == OP_MOVE) {
14706                                                 NULLIFY_INS (ins);
14707                                                 def_ins = NULL;
14708                                         } else {
14709                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14710                                                 ins->inst_basereg = var->inst_basereg;
14711                                                 ins->inst_offset = var->inst_offset;
14712                                                 ins->dreg = -1;
14713                                         }
14714                                         spec = INS_INFO (ins->opcode);
14715                                 } else {
14716                                         guint32 lvreg;
14717
14718                                         g_assert (var->opcode == OP_REGOFFSET);
14719
14720                                         prev_dreg = ins->dreg;
14721
14722                                         /* Invalidate any previous lvreg for this vreg */
14723                                         vreg_to_lvreg [ins->dreg] = 0;
14724
14725                                         lvreg = 0;
14726
14727                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14728                                                 regtype = 'l';
14729                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14730                                         }
14731
14732                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14733
14734 #if SIZEOF_REGISTER != 8
14735                                         if (regtype == 'l') {
14736                                                 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));
14737                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14738                                                 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));
14739                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14740                                                 def_ins = store_ins;
14741                                         }
14742                                         else
14743 #endif
14744                                         {
14745                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14746
14747                                                 /* Try to fuse the store into the instruction itself */
14748                                                 /* FIXME: Add more instructions */
14749                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14750                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14751                                                         ins->inst_imm = ins->inst_c0;
14752                                                         ins->inst_destbasereg = var->inst_basereg;
14753                                                         ins->inst_offset = var->inst_offset;
14754                                                         spec = INS_INFO (ins->opcode);
14755                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14756                                                         ins->opcode = store_opcode;
14757                                                         ins->inst_destbasereg = var->inst_basereg;
14758                                                         ins->inst_offset = var->inst_offset;
14759
14760                                                         no_lvreg = TRUE;
14761
14762                                                         tmp_reg = ins->dreg;
14763                                                         ins->dreg = ins->sreg2;
14764                                                         ins->sreg2 = tmp_reg;
14765                                                         store = TRUE;
14766
14767                                                         spec2 [MONO_INST_DEST] = ' ';
14768                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14769                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14770                                                         spec2 [MONO_INST_SRC3] = ' ';
14771                                                         spec = spec2;
14772                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14773                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14774                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14775                                                         ins->dreg = -1;
14776                                                         ins->inst_basereg = var->inst_basereg;
14777                                                         ins->inst_offset = var->inst_offset;
14778                                                         spec = INS_INFO (ins->opcode);
14779                                                 } else {
14780                                                         /* printf ("INS: "); mono_print_ins (ins); */
14781                                                         /* Create a store instruction */
14782                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14783
14784                                                         /* Insert it after the instruction */
14785                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14786
14787                                                         def_ins = store_ins;
14788
14789                                                         /*
14790                                                          * We can't assign ins->dreg to var->dreg here, since the
14791                                                          * sregs could use it. So set a flag, and do it after
14792                                                          * the sregs.
14793                                                          */
14794                                                         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)))
14795                                                                 dest_has_lvreg = TRUE;
14796                                                 }
14797                                         }
14798                                 }
14799
14800                                 if (def_ins && !live_range_start [dreg]) {
14801                                         live_range_start [dreg] = def_ins;
14802                                         live_range_start_bb [dreg] = bb;
14803                                 }
14804
14805                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14806                                         MonoInst *tmp;
14807
14808                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14809                                         tmp->inst_c1 = dreg;
14810                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14811                                 }
14812                         }
14813
14814                         /************/
14815                         /*  SREGS   */
14816                         /************/
14817                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14818                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14819                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14820                                 sreg = sregs [srcindex];
14821
14822                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14823                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14824                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14825                                         MonoInst *use_ins = ins;
14826                                         MonoInst *load_ins;
14827                                         guint32 load_opcode;
14828
14829                                         if (var->opcode == OP_REGVAR) {
14830                                                 sregs [srcindex] = var->dreg;
14831                                                 //mono_inst_set_src_registers (ins, sregs);
14832                                                 live_range_end [sreg] = use_ins;
14833                                                 live_range_end_bb [sreg] = bb;
14834
14835                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14836                                                         MonoInst *tmp;
14837
14838                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14839                                                         /* var->dreg is a hreg */
14840                                                         tmp->inst_c1 = sreg;
14841                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14842                                                 }
14843
14844                                                 continue;
14845                                         }
14846
14847                                         g_assert (var->opcode == OP_REGOFFSET);
14848
14849                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14850
14851                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14852
14853                                         if (vreg_to_lvreg [sreg]) {
14854                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14855
14856                                                 /* The variable is already loaded to an lvreg */
14857                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14858                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14859                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14860                                                 //mono_inst_set_src_registers (ins, sregs);
14861                                                 continue;
14862                                         }
14863
14864                                         /* Try to fuse the load into the instruction */
14865                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14866                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14867                                                 sregs [0] = var->inst_basereg;
14868                                                 //mono_inst_set_src_registers (ins, sregs);
14869                                                 ins->inst_offset = var->inst_offset;
14870                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14871                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14872                                                 sregs [1] = var->inst_basereg;
14873                                                 //mono_inst_set_src_registers (ins, sregs);
14874                                                 ins->inst_offset = var->inst_offset;
14875                                         } else {
14876                                                 if (MONO_IS_REAL_MOVE (ins)) {
14877                                                         ins->opcode = OP_NOP;
14878                                                         sreg = ins->dreg;
14879                                                 } else {
14880                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14881
14882                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14883
14884                                                         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) {
14885                                                                 if (var->dreg == prev_dreg) {
14886                                                                         /*
14887                                                                          * sreg refers to the value loaded by the load
14888                                                                          * emitted below, but we need to use ins->dreg
14889                                                                          * since it refers to the store emitted earlier.
14890                                                                          */
14891                                                                         sreg = ins->dreg;
14892                                                                 }
14893                                                                 g_assert (sreg != -1);
14894                                                                 vreg_to_lvreg [var->dreg] = sreg;
14895                                                                 g_assert (lvregs_len < 1024);
14896                                                                 lvregs [lvregs_len ++] = var->dreg;
14897                                                         }
14898                                                 }
14899
14900                                                 sregs [srcindex] = sreg;
14901                                                 //mono_inst_set_src_registers (ins, sregs);
14902
14903 #if SIZEOF_REGISTER != 8
14904                                                 if (regtype == 'l') {
14905                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14906                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14907                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14908                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14909                                                         use_ins = load_ins;
14910                                                 }
14911                                                 else
14912 #endif
14913                                                 {
14914 #if SIZEOF_REGISTER == 4
14915                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14916 #endif
14917                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14918                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14919                                                         use_ins = load_ins;
14920                                                 }
14921                                         }
14922
14923                                         if (var->dreg < orig_next_vreg) {
14924                                                 live_range_end [var->dreg] = use_ins;
14925                                                 live_range_end_bb [var->dreg] = bb;
14926                                         }
14927
14928                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14929                                                 MonoInst *tmp;
14930
14931                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14932                                                 tmp->inst_c1 = var->dreg;
14933                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14934                                         }
14935                                 }
14936                         }
14937                         mono_inst_set_src_registers (ins, sregs);
14938
14939                         if (dest_has_lvreg) {
14940                                 g_assert (ins->dreg != -1);
14941                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14942                                 g_assert (lvregs_len < 1024);
14943                                 lvregs [lvregs_len ++] = prev_dreg;
14944                                 dest_has_lvreg = FALSE;
14945                         }
14946
14947                         if (store) {
14948                                 tmp_reg = ins->dreg;
14949                                 ins->dreg = ins->sreg2;
14950                                 ins->sreg2 = tmp_reg;
14951                         }
14952
14953                         if (MONO_IS_CALL (ins)) {
14954                                 /* Clear vreg_to_lvreg array */
14955                                 for (i = 0; i < lvregs_len; i++)
14956                                         vreg_to_lvreg [lvregs [i]] = 0;
14957                                 lvregs_len = 0;
14958                         } else if (ins->opcode == OP_NOP) {
14959                                 ins->dreg = -1;
14960                                 MONO_INST_NULLIFY_SREGS (ins);
14961                         }
14962
14963                         if (cfg->verbose_level > 2)
14964                                 mono_print_ins_index (1, ins);
14965                 }
14966
14967                 /* Extend the live range based on the liveness info */
14968                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14969                         for (i = 0; i < cfg->num_varinfo; i ++) {
14970                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14971
14972                                 if (vreg_is_volatile (cfg, vi->vreg))
14973                                         /* The liveness info is incomplete */
14974                                         continue;
14975
14976                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14977                                         /* Live from at least the first ins of this bb */
14978                                         live_range_start [vi->vreg] = bb->code;
14979                                         live_range_start_bb [vi->vreg] = bb;
14980                                 }
14981
14982                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14983                                         /* Live at least until the last ins of this bb */
14984                                         live_range_end [vi->vreg] = bb->last_ins;
14985                                         live_range_end_bb [vi->vreg] = bb;
14986                                 }
14987                         }
14988                 }
14989         }
14990
14991         /*
14992          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14993          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14994          */
14995         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14996                 for (i = 0; i < cfg->num_varinfo; ++i) {
14997                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14998                         MonoInst *ins;
14999
15000                         if (live_range_start [vreg]) {
15001                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15002                                 ins->inst_c0 = i;
15003                                 ins->inst_c1 = vreg;
15004                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15005                         }
15006                         if (live_range_end [vreg]) {
15007                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15008                                 ins->inst_c0 = i;
15009                                 ins->inst_c1 = vreg;
15010                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15011                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15012                                 else
15013                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15014                         }
15015                 }
15016         }
15017
15018         if (cfg->gsharedvt_locals_var_ins) {
15019                 /* Nullify if unused */
15020                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15021                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15022         }
15023
15024         g_free (live_range_start);
15025         g_free (live_range_end);
15026         g_free (live_range_start_bb);
15027         g_free (live_range_end_bb);
15028 }
15029
15030 /**
15031  * FIXME:
15032  * - use 'iadd' instead of 'int_add'
15033  * - handling ovf opcodes: decompose in method_to_ir.
15034  * - unify iregs/fregs
15035  *   -> partly done, the missing parts are:
15036  *   - a more complete unification would involve unifying the hregs as well, so
15037  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15038  *     would no longer map to the machine hregs, so the code generators would need to
15039  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15040  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15041  *     fp/non-fp branches speeds it up by about 15%.
15042  * - use sext/zext opcodes instead of shifts
15043  * - add OP_ICALL
15044  * - get rid of TEMPLOADs if possible and use vregs instead
15045  * - clean up usage of OP_P/OP_ opcodes
15046  * - cleanup usage of DUMMY_USE
15047  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15048  *   stack
15049  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15050  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15051  * - make sure handle_stack_args () is called before the branch is emitted
15052  * - when the new IR is done, get rid of all unused stuff
15053  * - COMPARE/BEQ as separate instructions or unify them ?
15054  *   - keeping them separate allows specialized compare instructions like
15055  *     compare_imm, compare_membase
15056  *   - most back ends unify fp compare+branch, fp compare+ceq
15057  * - integrate mono_save_args into inline_method
15058  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15059  * - handle long shift opts on 32 bit platforms somehow: they require
15060  *   3 sregs (2 for arg1 and 1 for arg2)
15061  * - make byref a 'normal' type.
15062  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15063  *   variable if needed.
15064  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15065  *   like inline_method.
15066  * - remove inlining restrictions
15067  * - fix LNEG and enable cfold of INEG
15068  * - generalize x86 optimizations like ldelema as a peephole optimization
15069  * - add store_mem_imm for amd64
15070  * - optimize the loading of the interruption flag in the managed->native wrappers
15071  * - avoid special handling of OP_NOP in passes
15072  * - move code inserting instructions into one function/macro.
15073  * - try a coalescing phase after liveness analysis
15074  * - add float -> vreg conversion + local optimizations on !x86
15075  * - figure out how to handle decomposed branches during optimizations, ie.
15076  *   compare+branch, op_jump_table+op_br etc.
15077  * - promote RuntimeXHandles to vregs
15078  * - vtype cleanups:
15079  *   - add a NEW_VARLOADA_VREG macro
15080  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15081  *   accessing vtype fields.
15082  * - get rid of I8CONST on 64 bit platforms
15083  * - dealing with the increase in code size due to branches created during opcode
15084  *   decomposition:
15085  *   - use extended basic blocks
15086  *     - all parts of the JIT
15087  *     - handle_global_vregs () && local regalloc
15088  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15089  * - sources of increase in code size:
15090  *   - vtypes
15091  *   - long compares
15092  *   - isinst and castclass
15093  *   - lvregs not allocated to global registers even if used multiple times
15094  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15095  *   meaningful.
15096  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15097  * - add all micro optimizations from the old JIT
15098  * - put tree optimizations into the deadce pass
15099  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15100  *   specific function.
15101  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15102  *   fcompare + branchCC.
15103  * - create a helper function for allocating a stack slot, taking into account
15104  *   MONO_CFG_HAS_SPILLUP.
15105  * - merge r68207.
15106  * - merge the ia64 switch changes.
15107  * - optimize mono_regstate2_alloc_int/float.
15108  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15109  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15110  *   parts of the tree could be separated by other instructions, killing the tree
15111  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15112  *   instructions if the result of the load is used multiple times ?
15113  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15114  * - LAST MERGE: 108395.
15115  * - when returning vtypes in registers, generate IR and append it to the end of the
15116  *   last bb instead of doing it in the epilog.
15117  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15118  */
15119
15120 /*
15121
15122 NOTES
15123 -----
15124
15125 - When to decompose opcodes:
15126   - earlier: this makes some optimizations hard to implement, since the low level IR
15127   no longer contains the neccessary information. But it is easier to do.
15128   - later: harder to implement, enables more optimizations.
15129 - Branches inside bblocks:
15130   - created when decomposing complex opcodes.
15131     - branches to another bblock: harmless, but not tracked by the branch
15132       optimizations, so need to branch to a label at the start of the bblock.
15133     - branches to inside the same bblock: very problematic, trips up the local
15134       reg allocator. Can be fixed by spitting the current bblock, but that is a
15135       complex operation, since some local vregs can become global vregs etc.
15136 - Local/global vregs:
15137   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15138     local register allocator.
15139   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15140     structure, created by mono_create_var (). Assigned to hregs or the stack by
15141     the global register allocator.
15142 - When to do optimizations like alu->alu_imm:
15143   - earlier -> saves work later on since the IR will be smaller/simpler
15144   - later -> can work on more instructions
15145 - Handling of valuetypes:
15146   - When a vtype is pushed on the stack, a new temporary is created, an
15147     instruction computing its address (LDADDR) is emitted and pushed on
15148     the stack. Need to optimize cases when the vtype is used immediately as in
15149     argument passing, stloc etc.
15150 - Instead of the to_end stuff in the old JIT, simply call the function handling
15151   the values on the stack before emitting the last instruction of the bb.
15152 */
15153
15154 #endif /* DISABLE_JIT */