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 #include <mono/utils/mono-threads-coop.h>
  68
  69 #include "trace.h"
  70
  71 #include "ir-emit.h"
  72
  73 #include "jit-icalls.h"
  74 #include "jit.h"
  75 #include "debugger-agent.h"
  76 #include "seq-points.h"
  77 #include "aot-compiler.h"
  78 #include "mini-llvm.h"
  79
  80 #define BRANCH_COST 10
  81 #define INLINE_LENGTH_LIMIT 20
  82
  83 /* These have 'cfg' as an implicit argument */
  84 #define INLINE_FAILURE(msg) do {                                                                        \
  85         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  86                 inline_failure (cfg, msg);                                                                              \
  87                 goto exception_exit;                                                                                    \
  88         } \
  89         } while (0)
  90 #define CHECK_CFG_EXCEPTION do {\
  91                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  92                         goto exception_exit;                                            \
  93         } while (0)
  94 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  95                 field_access_failure ((cfg), (method), (field));                        \
  96                 goto exception_exit;    \
  97         } while (0)
  98 #define GENERIC_SHARING_FAILURE(opcode) do {            \
  99                 if (cfg->gshared) {                                                                     \
 100                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 101                         goto exception_exit;    \
 102                 }                       \
 103         } while (0)
 104 #define GSHAREDVT_FAILURE(opcode) do {          \
 105         if (cfg->gsharedvt) {                                                                                           \
 106                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 107                 goto exception_exit;                                                                                    \
 108         }                                                                                                                                       \
 109         } while (0)
 110 #define OUT_OF_MEMORY_FAILURE do {      \
 111                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 112                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 113                 goto exception_exit;    \
 114         } while (0)
 115 #define DISABLE_AOT(cfg) do { \
 116                 if ((cfg)->verbose_level >= 2)                                            \
 117                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 118                 (cfg)->disable_aot = TRUE;                                                        \
 119         } while (0)
 120 #define LOAD_ERROR do { \
 121                 break_on_unverified ();                                                         \
 122                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 123                 goto exception_exit;                                                                    \
 124         } while (0)
 125
 126 #define TYPE_LOAD_ERROR(klass) do { \
 127                 cfg->exception_ptr = klass; \
 128                 LOAD_ERROR;                                     \
 129         } while (0)
 130
 131 #define CHECK_CFG_ERROR do {\
 132                 if (!mono_error_ok (&cfg->error)) { \
 133                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 134                         goto mono_error_exit; \
 135                 } \
 136         } while (0)
 137
 138 /* Determine whenever 'ins' represents a load of the 'this' argument */
 139 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 140
 141 static int ldind_to_load_membase (int opcode);
 142 static int stind_to_store_membase (int opcode);
 143
 144 int mono_op_to_op_imm (int opcode);
 145 int mono_op_to_op_imm_noemul (int opcode);
 146
 147 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 148
 149 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 150                                                   guchar *ip, guint real_offset, gboolean inline_always);
 151 static MonoInst*
 152 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 153
 154 /* helper methods signatures */
 155 static MonoMethodSignature *helper_sig_domain_get;
 156 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 157 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 158
 159
 160 /* type loading helpers */
 161 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 162 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 163
 164 /*
 165  * Instruction metadata
 166  */
 167 #ifdef MINI_OP
 168 #undef MINI_OP
 169 #endif
 170 #ifdef MINI_OP3
 171 #undef MINI_OP3
 172 #endif
 173 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 174 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 175 #define NONE ' '
 176 #define IREG 'i'
 177 #define FREG 'f'
 178 #define VREG 'v'
 179 #define XREG 'x'
 180 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 181 #define LREG IREG
 182 #else
 183 #define LREG 'l'
 184 #endif
 185 /* keep in sync with the enum in mini.h */
 186 const char
 187 ins_info[] = {
 188 #include "mini-ops.h"
 189 };
 190 #undef MINI_OP
 191 #undef MINI_OP3
 192
 193 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 194 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 195 /*
 196  * This should contain the index of the last sreg + 1. This is not the same
 197  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 198  */
 199 const gint8 ins_sreg_counts[] = {
 200 #include "mini-ops.h"
 201 };
 202 #undef MINI_OP
 203 #undef MINI_OP3
 204
 205 #define MONO_INIT_VARINFO(vi,id) do { \
 206         (vi)->range.first_use.pos.bid = 0xffff; \
 207         (vi)->reg = -1; \
 208         (vi)->idx = (id); \
 209 } while (0)
 210
 211 guint32
 212 mono_alloc_ireg (MonoCompile *cfg)
 213 {
 214         return alloc_ireg (cfg);
 215 }
 216
 217 guint32
 218 mono_alloc_lreg (MonoCompile *cfg)
 219 {
 220         return alloc_lreg (cfg);
 221 }
 222
 223 guint32
 224 mono_alloc_freg (MonoCompile *cfg)
 225 {
 226         return alloc_freg (cfg);
 227 }
 228
 229 guint32
 230 mono_alloc_preg (MonoCompile *cfg)
 231 {
 232         return alloc_preg (cfg);
 233 }
 234
 235 guint32
 236 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 237 {
 238         return alloc_dreg (cfg, stack_type);
 239 }
 240
 241 /*
 242  * mono_alloc_ireg_ref:
 243  *
 244  *   Allocate an IREG, and mark it as holding a GC ref.
 245  */
 246 guint32
 247 mono_alloc_ireg_ref (MonoCompile *cfg)
 248 {
 249         return alloc_ireg_ref (cfg);
 250 }
 251
 252 /*
 253  * mono_alloc_ireg_mp:
 254  *
 255  *   Allocate an IREG, and mark it as holding a managed pointer.
 256  */
 257 guint32
 258 mono_alloc_ireg_mp (MonoCompile *cfg)
 259 {
 260         return alloc_ireg_mp (cfg);
 261 }
 262
 263 /*
 264  * mono_alloc_ireg_copy:
 265  *
 266  *   Allocate an IREG with the same GC type as VREG.
 267  */
 268 guint32
 269 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 270 {
 271         if (vreg_is_ref (cfg, vreg))
 272                 return alloc_ireg_ref (cfg);
 273         else if (vreg_is_mp (cfg, vreg))
 274                 return alloc_ireg_mp (cfg);
 275         else
 276                 return alloc_ireg (cfg);
 277 }
 278
 279 guint
 280 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 281 {
 282         if (type->byref)
 283                 return OP_MOVE;
 284
 285         type = mini_get_underlying_type (type);
 286 handle_enum:
 287         switch (type->type) {
 288         case MONO_TYPE_I1:
 289         case MONO_TYPE_U1:
 290                 return OP_MOVE;
 291         case MONO_TYPE_I2:
 292         case MONO_TYPE_U2:
 293                 return OP_MOVE;
 294         case MONO_TYPE_I4:
 295         case MONO_TYPE_U4:
 296                 return OP_MOVE;
 297         case MONO_TYPE_I:
 298         case MONO_TYPE_U:
 299         case MONO_TYPE_PTR:
 300         case MONO_TYPE_FNPTR:
 301                 return OP_MOVE;
 302         case MONO_TYPE_CLASS:
 303         case MONO_TYPE_STRING:
 304         case MONO_TYPE_OBJECT:
 305         case MONO_TYPE_SZARRAY:
 306         case MONO_TYPE_ARRAY:
 307                 return OP_MOVE;
 308         case MONO_TYPE_I8:
 309         case MONO_TYPE_U8:
 310 #if SIZEOF_REGISTER == 8
 311                 return OP_MOVE;
 312 #else
 313                 return OP_LMOVE;
 314 #endif
 315         case MONO_TYPE_R4:
 316                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 317         case MONO_TYPE_R8:
 318                 return OP_FMOVE;
 319         case MONO_TYPE_VALUETYPE:
 320                 if (type->data.klass->enumtype) {
 321                         type = mono_class_enum_basetype (type->data.klass);
 322                         goto handle_enum;
 323                 }
 324                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 325                         return OP_XMOVE;
 326                 return OP_VMOVE;
 327         case MONO_TYPE_TYPEDBYREF:
 328                 return OP_VMOVE;
 329         case MONO_TYPE_GENERICINST:
 330                 type = &type->data.generic_class->container_class->byval_arg;
 331                 goto handle_enum;
 332         case MONO_TYPE_VAR:
 333         case MONO_TYPE_MVAR:
 334                 g_assert (cfg->gshared);
 335                 if (mini_type_var_is_vt (type))
 336                         return OP_VMOVE;
 337                 else
 338                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 339         default:
 340                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 341         }
 342         return -1;
 343 }
 344
 345 void
 346 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 347 {
 348         int i;
 349         MonoInst *tree;
 350
 351         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 352         for (i = 0; i < bb->in_count; ++i)
 353                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 354         printf (", OUT: ");
 355         for (i = 0; i < bb->out_count; ++i)
 356                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 357         printf (" ]\n");
 358         for (tree = bb->code; tree; tree = tree->next)
 359                 mono_print_ins_index (-1, tree);
 360 }
 361
 362 void
 363 mono_create_helper_signatures (void)
 364 {
 365         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 366         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 367         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr ptr");
 368 }
 369
 370 static MONO_NEVER_INLINE void
 371 break_on_unverified (void)
 372 {
 373         if (mini_get_debug_options ()->break_on_unverified)
 374                 G_BREAKPOINT ();
 375 }
 376
 377 static MONO_NEVER_INLINE void
 378 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 379 {
 380         char *method_fname = mono_method_full_name (method, TRUE);
 381         char *field_fname = mono_field_full_name (field);
 382         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 383         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 384         g_free (method_fname);
 385         g_free (field_fname);
 386 }
 387
 388 static MONO_NEVER_INLINE void
 389 inline_failure (MonoCompile *cfg, const char *msg)
 390 {
 391         if (cfg->verbose_level >= 2)
 392                 printf ("inline failed: %s\n", msg);
 393         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 394 }
 395
 396 static MONO_NEVER_INLINE void
 397 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 398 {
 399         if (cfg->verbose_level > 2)                                                                                     \
 400                 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);
 401         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 402 }
 403
 404 static MONO_NEVER_INLINE void
 405 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 406 {
 407         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);
 408         if (cfg->verbose_level >= 2)
 409                 printf ("%s\n", cfg->exception_message);
 410         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 411 }
 412
 413 /*
 414  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 415  * foo<T> (int i) { ldarg.0; box T; }
 416  */
 417 #define UNVERIFIED do { \
 418         if (cfg->gsharedvt) { \
 419                 if (cfg->verbose_level > 2)                                                                     \
 420                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 421                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 422                 goto exception_exit;                                                                                    \
 423         }                                                                                                                                       \
 424         break_on_unverified ();                                                                                         \
 425         goto unverified;                                                                                                        \
 426 } while (0)
 427
 428 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 429                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 430                 if (!(tblock)) {        \
 431                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 432             NEW_BBLOCK (cfg, (tblock)); \
 433                         (tblock)->cil_code = (ip);      \
 434                         ADD_BBLOCK (cfg, (tblock));     \
 435                 } \
 436         } while (0)
 437
 438 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 439 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 440                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 441                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 442                 (dest)->sreg1 = (sr1); \
 443                 (dest)->sreg2 = (sr2); \
 444                 (dest)->inst_imm = (imm); \
 445                 (dest)->backend.shift_amount = (shift); \
 446                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 447         } while (0)
 448 #endif
 449
 450 /* Emit conversions so both operands of a binary opcode are of the same type */
 451 static void
 452 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 453 {
 454         MonoInst *arg1 = *arg1_ref;
 455         MonoInst *arg2 = *arg2_ref;
 456
 457         if (cfg->r4fp &&
 458                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 459                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 460                 MonoInst *conv;
 461
 462                 /* Mixing r4/r8 is allowed by the spec */
 463                 if (arg1->type == STACK_R4) {
 464                         int dreg = alloc_freg (cfg);
 465
 466                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 467                         conv->type = STACK_R8;
 468                         ins->sreg1 = dreg;
 469                         *arg1_ref = conv;
 470                 }
 471                 if (arg2->type == STACK_R4) {
 472                         int dreg = alloc_freg (cfg);
 473
 474                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 475                         conv->type = STACK_R8;
 476                         ins->sreg2 = dreg;
 477                         *arg2_ref = conv;
 478                 }
 479         }
 480
 481 #if SIZEOF_REGISTER == 8
 482         /* FIXME: Need to add many more cases */
 483         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 484                 MonoInst *widen;
 485
 486                 int dr = alloc_preg (cfg);
 487                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 488                 (ins)->sreg2 = widen->dreg;
 489         }
 490 #endif
 491 }
 492
 493 #define ADD_BINOP(op) do {      \
 494                 MONO_INST_NEW (cfg, ins, (op)); \
 495                 sp -= 2;        \
 496                 ins->sreg1 = sp [0]->dreg;      \
 497                 ins->sreg2 = sp [1]->dreg;      \
 498                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 499                 CHECK_TYPE (ins);       \
 500                 /* Have to insert a widening op */               \
 501         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 502         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 503         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 504         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 505         } while (0)
 506
 507 #define ADD_UNOP(op) do {       \
 508                 MONO_INST_NEW (cfg, ins, (op)); \
 509                 sp--;   \
 510                 ins->sreg1 = sp [0]->dreg;      \
 511                 type_from_op (cfg, ins, sp [0], NULL);  \
 512                 CHECK_TYPE (ins);       \
 513         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 514         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 515                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 516         } while (0)
 517
 518 #define ADD_BINCOND(next_block) do {    \
 519                 MonoInst *cmp;  \
 520                 sp -= 2; \
 521                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 522                 cmp->sreg1 = sp [0]->dreg;      \
 523                 cmp->sreg2 = sp [1]->dreg;      \
 524                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 525                 CHECK_TYPE (cmp);       \
 526                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 527                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 528                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 529                 GET_BBLOCK (cfg, tblock, target);               \
 530                 link_bblock (cfg, cfg->cbb, tblock);    \
 531                 ins->inst_true_bb = tblock;     \
 532                 if ((next_block)) {     \
 533                         link_bblock (cfg, cfg->cbb, (next_block));      \
 534                         ins->inst_false_bb = (next_block);      \
 535                         start_new_bblock = 1;   \
 536                 } else {        \
 537                         GET_BBLOCK (cfg, tblock, ip);           \
 538                         link_bblock (cfg, cfg->cbb, tblock);    \
 539                         ins->inst_false_bb = tblock;    \
 540                         start_new_bblock = 2;   \
 541                 }       \
 542                 if (sp != stack_start) {                                                                        \
 543                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 544                         CHECK_UNVERIFIABLE (cfg); \
 545                 } \
 546         MONO_ADD_INS (cfg->cbb, cmp); \
 547                 MONO_ADD_INS (cfg->cbb, ins);   \
 548         } while (0)
 549
 550 /* *
 551  * link_bblock: Links two basic blocks
 552  *
 553  * links two basic blocks in the control flow graph, the 'from'
 554  * argument is the starting block and the 'to' argument is the block
 555  * the control flow ends to after 'from'.
 556  */
 557 static void
 558 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 559 {
 560         MonoBasicBlock **newa;
 561         int i, found;
 562
 563 #if 0
 564         if (from->cil_code) {
 565                 if (to->cil_code)
 566                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 567                 else
 568                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 569         } else {
 570                 if (to->cil_code)
 571                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 572                 else
 573                         printf ("edge from entry to exit\n");
 574         }
 575 #endif
 576
 577         found = FALSE;
 578         for (i = 0; i < from->out_count; ++i) {
 579                 if (to == from->out_bb [i]) {
 580                         found = TRUE;
 581                         break;
 582                 }
 583         }
 584         if (!found) {
 585                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 586                 for (i = 0; i < from->out_count; ++i) {
 587                         newa [i] = from->out_bb [i];
 588                 }
 589                 newa [i] = to;
 590                 from->out_count++;
 591                 from->out_bb = newa;
 592         }
 593
 594         found = FALSE;
 595         for (i = 0; i < to->in_count; ++i) {
 596                 if (from == to->in_bb [i]) {
 597                         found = TRUE;
 598                         break;
 599                 }
 600         }
 601         if (!found) {
 602                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 603                 for (i = 0; i < to->in_count; ++i) {
 604                         newa [i] = to->in_bb [i];
 605                 }
 606                 newa [i] = from;
 607                 to->in_count++;
 608                 to->in_bb = newa;
 609         }
 610 }
 611
 612 void
 613 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 614 {
 615         link_bblock (cfg, from, to);
 616 }
 617
 618 /**
 619  * mono_find_block_region:
 620  *
 621  *   We mark each basic block with a region ID. We use that to avoid BB
 622  *   optimizations when blocks are in different regions.
 623  *
 624  * Returns:
 625  *   A region token that encodes where this region is, and information
 626  *   about the clause owner for this block.
 627  *
 628  *   The region encodes the try/catch/filter clause that owns this block
 629  *   as well as the type.  -1 is a special value that represents a block
 630  *   that is in none of try/catch/filter.
 631  */
 632 static int
 633 mono_find_block_region (MonoCompile *cfg, int offset)
 634 {
 635         MonoMethodHeader *header = cfg->header;
 636         MonoExceptionClause *clause;
 637         int i;
 638
 639         for (i = 0; i < header->num_clauses; ++i) {
 640                 clause = &header->clauses [i];
 641                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 642                     (offset < (clause->handler_offset)))
 643                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 644
 645                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 646                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 647                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 648                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 649                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 650                         else
 651                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 652                 }
 653         }
 654         for (i = 0; i < header->num_clauses; ++i) {
 655                 clause = &header->clauses [i];
 656
 657                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 658                         return ((i + 1) << 8) | clause->flags;
 659         }
 660
 661         return -1;
 662 }
 663
 664 static GList*
 665 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 666 {
 667         MonoMethodHeader *header = cfg->header;
 668         MonoExceptionClause *clause;
 669         int i;
 670         GList *res = NULL;
 671
 672         for (i = 0; i < header->num_clauses; ++i) {
 673                 clause = &header->clauses [i];
 674                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 675                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 676                         if (clause->flags == type)
 677                                 res = g_list_append (res, clause);
 678                 }
 679         }
 680         return res;
 681 }
 682
 683 static void
 684 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 685 {
 686         MonoInst *var;
 687
 688         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 689         if (var)
 690                 return;
 691
 692         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 693         /* prevent it from being register allocated */
 694         var->flags |= MONO_INST_VOLATILE;
 695
 696         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 697 }
 698
 699 MonoInst *
 700 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 701 {
 702         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 703 }
 704
 705 static MonoInst*
 706 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 707 {
 708         MonoInst *var;
 709
 710         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 711         if (var)
 712                 return var;
 713
 714         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 715         /* prevent it from being register allocated */
 716         var->flags |= MONO_INST_VOLATILE;
 717
 718         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 719
 720         return var;
 721 }
 722
 723 /*
 724  * Returns the type used in the eval stack when @type is loaded.
 725  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 726  */
 727 void
 728 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 729 {
 730         MonoClass *klass;
 731
 732         type = mini_get_underlying_type (type);
 733         inst->klass = klass = mono_class_from_mono_type (type);
 734         if (type->byref) {
 735                 inst->type = STACK_MP;
 736                 return;
 737         }
 738
 739 handle_enum:
 740         switch (type->type) {
 741         case MONO_TYPE_VOID:
 742                 inst->type = STACK_INV;
 743                 return;
 744         case MONO_TYPE_I1:
 745         case MONO_TYPE_U1:
 746         case MONO_TYPE_I2:
 747         case MONO_TYPE_U2:
 748         case MONO_TYPE_I4:
 749         case MONO_TYPE_U4:
 750                 inst->type = STACK_I4;
 751                 return;
 752         case MONO_TYPE_I:
 753         case MONO_TYPE_U:
 754         case MONO_TYPE_PTR:
 755         case MONO_TYPE_FNPTR:
 756                 inst->type = STACK_PTR;
 757                 return;
 758         case MONO_TYPE_CLASS:
 759         case MONO_TYPE_STRING:
 760         case MONO_TYPE_OBJECT:
 761         case MONO_TYPE_SZARRAY:
 762         case MONO_TYPE_ARRAY:
 763                 inst->type = STACK_OBJ;
 764                 return;
 765         case MONO_TYPE_I8:
 766         case MONO_TYPE_U8:
 767                 inst->type = STACK_I8;
 768                 return;
 769         case MONO_TYPE_R4:
 770                 inst->type = cfg->r4_stack_type;
 771                 break;
 772         case MONO_TYPE_R8:
 773                 inst->type = STACK_R8;
 774                 return;
 775         case MONO_TYPE_VALUETYPE:
 776                 if (type->data.klass->enumtype) {
 777                         type = mono_class_enum_basetype (type->data.klass);
 778                         goto handle_enum;
 779                 } else {
 780                         inst->klass = klass;
 781                         inst->type = STACK_VTYPE;
 782                         return;
 783                 }
 784         case MONO_TYPE_TYPEDBYREF:
 785                 inst->klass = mono_defaults.typed_reference_class;
 786                 inst->type = STACK_VTYPE;
 787                 return;
 788         case MONO_TYPE_GENERICINST:
 789                 type = &type->data.generic_class->container_class->byval_arg;
 790                 goto handle_enum;
 791         case MONO_TYPE_VAR:
 792         case MONO_TYPE_MVAR:
 793                 g_assert (cfg->gshared);
 794                 if (mini_is_gsharedvt_type (type)) {
 795                         g_assert (cfg->gsharedvt);
 796                         inst->type = STACK_VTYPE;
 797                 } else {
 798                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 799                 }
 800                 return;
 801         default:
 802                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 803         }
 804 }
 805
 806 /*
 807  * The following tables are used to quickly validate the IL code in type_from_op ().
 808  */
 809 static const char
 810 bin_num_table [STACK_MAX] [STACK_MAX] = {
 811         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 812         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 813         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 814         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 815         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 816         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 817         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 818         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 819         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 820 };
 821
 822 static const char
 823 neg_table [] = {
 824         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 825 };
 826
 827 /* reduce the size of this table */
 828 static const char
 829 bin_int_table [STACK_MAX] [STACK_MAX] = {
 830         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 833         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 834         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 835         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 836         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 837         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 838 };
 839
 840 static const char
 841 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 842 /*      Inv i  L  p  F  &  O  vt r4 */
 843         {0},
 844         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 845         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 846         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 847         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 848         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 849         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 850         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 851         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 852 };
 853
 854 /* reduce the size of this table */
 855 static const char
 856 shift_table [STACK_MAX] [STACK_MAX] = {
 857         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 858         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 859         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 860         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 861         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 862         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 863         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 864         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 865 };
 866
 867 /*
 868  * Tables to map from the non-specific opcode to the matching
 869  * type-specific opcode.
 870  */
 871 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 872 static const guint16
 873 binops_op_map [STACK_MAX] = {
 874         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
 875 };
 876
 877 /* handles from CEE_NEG to CEE_CONV_U8 */
 878 static const guint16
 879 unops_op_map [STACK_MAX] = {
 880         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
 881 };
 882
 883 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 884 static const guint16
 885 ovfops_op_map [STACK_MAX] = {
 886         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
 887 };
 888
 889 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 890 static const guint16
 891 ovf2ops_op_map [STACK_MAX] = {
 892         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
 893 };
 894
 895 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 896 static const guint16
 897 ovf3ops_op_map [STACK_MAX] = {
 898         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
 899 };
 900
 901 /* handles from CEE_BEQ to CEE_BLT_UN */
 902 static const guint16
 903 beqops_op_map [STACK_MAX] = {
 904         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
 905 };
 906
 907 /* handles from CEE_CEQ to CEE_CLT_UN */
 908 static const guint16
 909 ceqops_op_map [STACK_MAX] = {
 910         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
 911 };
 912
 913 /*
 914  * Sets ins->type (the type on the eval stack) according to the
 915  * type of the opcode and the arguments to it.
 916  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 917  *
 918  * FIXME: this function sets ins->type unconditionally in some cases, but
 919  * it should set it to invalid for some types (a conv.x on an object)
 920  */
 921 static void
 922 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 923 {
 924         switch (ins->opcode) {
 925         /* binops */
 926         case CEE_ADD:
 927         case CEE_SUB:
 928         case CEE_MUL:
 929         case CEE_DIV:
 930         case CEE_REM:
 931                 /* FIXME: check unverifiable args for STACK_MP */
 932                 ins->type = bin_num_table [src1->type] [src2->type];
 933                 ins->opcode += binops_op_map [ins->type];
 934                 break;
 935         case CEE_DIV_UN:
 936         case CEE_REM_UN:
 937         case CEE_AND:
 938         case CEE_OR:
 939         case CEE_XOR:
 940                 ins->type = bin_int_table [src1->type] [src2->type];
 941                 ins->opcode += binops_op_map [ins->type];
 942                 break;
 943         case CEE_SHL:
 944         case CEE_SHR:
 945         case CEE_SHR_UN:
 946                 ins->type = shift_table [src1->type] [src2->type];
 947                 ins->opcode += binops_op_map [ins->type];
 948                 break;
 949         case OP_COMPARE:
 950         case OP_LCOMPARE:
 951         case OP_ICOMPARE:
 952                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 953                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 954                         ins->opcode = OP_LCOMPARE;
 955                 else if (src1->type == STACK_R4)
 956                         ins->opcode = OP_RCOMPARE;
 957                 else if (src1->type == STACK_R8)
 958                         ins->opcode = OP_FCOMPARE;
 959                 else
 960                         ins->opcode = OP_ICOMPARE;
 961                 break;
 962         case OP_ICOMPARE_IMM:
 963                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 964                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 965                         ins->opcode = OP_LCOMPARE_IMM;
 966                 break;
 967         case CEE_BEQ:
 968         case CEE_BGE:
 969         case CEE_BGT:
 970         case CEE_BLE:
 971         case CEE_BLT:
 972         case CEE_BNE_UN:
 973         case CEE_BGE_UN:
 974         case CEE_BGT_UN:
 975         case CEE_BLE_UN:
 976         case CEE_BLT_UN:
 977                 ins->opcode += beqops_op_map [src1->type];
 978                 break;
 979         case OP_CEQ:
 980                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 981                 ins->opcode += ceqops_op_map [src1->type];
 982                 break;
 983         case OP_CGT:
 984         case OP_CGT_UN:
 985         case OP_CLT:
 986         case OP_CLT_UN:
 987                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
 988                 ins->opcode += ceqops_op_map [src1->type];
 989                 break;
 990         /* unops */
 991         case CEE_NEG:
 992                 ins->type = neg_table [src1->type];
 993                 ins->opcode += unops_op_map [ins->type];
 994                 break;
 995         case CEE_NOT:
 996                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
 997                         ins->type = src1->type;
 998                 else
 999                         ins->type = STACK_INV;
1000                 ins->opcode += unops_op_map [ins->type];
1001                 break;
1002         case CEE_CONV_I1:
1003         case CEE_CONV_I2:
1004         case CEE_CONV_I4:
1005         case CEE_CONV_U4:
1006                 ins->type = STACK_I4;
1007                 ins->opcode += unops_op_map [src1->type];
1008                 break;
1009         case CEE_CONV_R_UN:
1010                 ins->type = STACK_R8;
1011                 switch (src1->type) {
1012                 case STACK_I4:
1013                 case STACK_PTR:
1014                         ins->opcode = OP_ICONV_TO_R_UN;
1015                         break;
1016                 case STACK_I8:
1017                         ins->opcode = OP_LCONV_TO_R_UN;
1018                         break;
1019                 }
1020                 break;
1021         case CEE_CONV_OVF_I1:
1022         case CEE_CONV_OVF_U1:
1023         case CEE_CONV_OVF_I2:
1024         case CEE_CONV_OVF_U2:
1025         case CEE_CONV_OVF_I4:
1026         case CEE_CONV_OVF_U4:
1027                 ins->type = STACK_I4;
1028                 ins->opcode += ovf3ops_op_map [src1->type];
1029                 break;
1030         case CEE_CONV_OVF_I_UN:
1031         case CEE_CONV_OVF_U_UN:
1032                 ins->type = STACK_PTR;
1033                 ins->opcode += ovf2ops_op_map [src1->type];
1034                 break;
1035         case CEE_CONV_OVF_I1_UN:
1036         case CEE_CONV_OVF_I2_UN:
1037         case CEE_CONV_OVF_I4_UN:
1038         case CEE_CONV_OVF_U1_UN:
1039         case CEE_CONV_OVF_U2_UN:
1040         case CEE_CONV_OVF_U4_UN:
1041                 ins->type = STACK_I4;
1042                 ins->opcode += ovf2ops_op_map [src1->type];
1043                 break;
1044         case CEE_CONV_U:
1045                 ins->type = STACK_PTR;
1046                 switch (src1->type) {
1047                 case STACK_I4:
1048                         ins->opcode = OP_ICONV_TO_U;
1049                         break;
1050                 case STACK_PTR:
1051                 case STACK_MP:
1052 #if SIZEOF_VOID_P == 8
1053                         ins->opcode = OP_LCONV_TO_U;
1054 #else
1055                         ins->opcode = OP_MOVE;
1056 #endif
1057                         break;
1058                 case STACK_I8:
1059                         ins->opcode = OP_LCONV_TO_U;
1060                         break;
1061                 case STACK_R8:
1062                         ins->opcode = OP_FCONV_TO_U;
1063                         break;
1064                 }
1065                 break;
1066         case CEE_CONV_I8:
1067         case CEE_CONV_U8:
1068                 ins->type = STACK_I8;
1069                 ins->opcode += unops_op_map [src1->type];
1070                 break;
1071         case CEE_CONV_OVF_I8:
1072         case CEE_CONV_OVF_U8:
1073                 ins->type = STACK_I8;
1074                 ins->opcode += ovf3ops_op_map [src1->type];
1075                 break;
1076         case CEE_CONV_OVF_U8_UN:
1077         case CEE_CONV_OVF_I8_UN:
1078                 ins->type = STACK_I8;
1079                 ins->opcode += ovf2ops_op_map [src1->type];
1080                 break;
1081         case CEE_CONV_R4:
1082                 ins->type = cfg->r4_stack_type;
1083                 ins->opcode += unops_op_map [src1->type];
1084                 break;
1085         case CEE_CONV_R8:
1086                 ins->type = STACK_R8;
1087                 ins->opcode += unops_op_map [src1->type];
1088                 break;
1089         case OP_CKFINITE:
1090                 ins->type = STACK_R8;
1091                 break;
1092         case CEE_CONV_U2:
1093         case CEE_CONV_U1:
1094                 ins->type = STACK_I4;
1095                 ins->opcode += ovfops_op_map [src1->type];
1096                 break;
1097         case CEE_CONV_I:
1098         case CEE_CONV_OVF_I:
1099         case CEE_CONV_OVF_U:
1100                 ins->type = STACK_PTR;
1101                 ins->opcode += ovfops_op_map [src1->type];
1102                 break;
1103         case CEE_ADD_OVF:
1104         case CEE_ADD_OVF_UN:
1105         case CEE_MUL_OVF:
1106         case CEE_MUL_OVF_UN:
1107         case CEE_SUB_OVF:
1108         case CEE_SUB_OVF_UN:
1109                 ins->type = bin_num_table [src1->type] [src2->type];
1110                 ins->opcode += ovfops_op_map [src1->type];
1111                 if (ins->type == STACK_R8)
1112                         ins->type = STACK_INV;
1113                 break;
1114         case OP_LOAD_MEMBASE:
1115                 ins->type = STACK_PTR;
1116                 break;
1117         case OP_LOADI1_MEMBASE:
1118         case OP_LOADU1_MEMBASE:
1119         case OP_LOADI2_MEMBASE:
1120         case OP_LOADU2_MEMBASE:
1121         case OP_LOADI4_MEMBASE:
1122         case OP_LOADU4_MEMBASE:
1123                 ins->type = STACK_PTR;
1124                 break;
1125         case OP_LOADI8_MEMBASE:
1126                 ins->type = STACK_I8;
1127                 break;
1128         case OP_LOADR4_MEMBASE:
1129                 ins->type = cfg->r4_stack_type;
1130                 break;
1131         case OP_LOADR8_MEMBASE:
1132                 ins->type = STACK_R8;
1133                 break;
1134         default:
1135                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1136                 break;
1137         }
1138
1139         if (ins->type == STACK_MP)
1140                 ins->klass = mono_defaults.object_class;
1141 }
1142
1143 static const char
1144 ldind_type [] = {
1145         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1146 };
1147
1148 #if 0
1149
1150 static const char
1151 param_table [STACK_MAX] [STACK_MAX] = {
1152         {0},
1153 };
1154
1155 static int
1156 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1157 {
1158         int i;
1159
1160         if (sig->hasthis) {
1161                 switch (args->type) {
1162                 case STACK_I4:
1163                 case STACK_I8:
1164                 case STACK_R8:
1165                 case STACK_VTYPE:
1166                 case STACK_INV:
1167                         return 0;
1168                 }
1169                 args++;
1170         }
1171         for (i = 0; i < sig->param_count; ++i) {
1172                 switch (args [i].type) {
1173                 case STACK_INV:
1174                         return 0;
1175                 case STACK_MP:
1176                         if (!sig->params [i]->byref)
1177                                 return 0;
1178                         continue;
1179                 case STACK_OBJ:
1180                         if (sig->params [i]->byref)
1181                                 return 0;
1182                         switch (sig->params [i]->type) {
1183                         case MONO_TYPE_CLASS:
1184                         case MONO_TYPE_STRING:
1185                         case MONO_TYPE_OBJECT:
1186                         case MONO_TYPE_SZARRAY:
1187                         case MONO_TYPE_ARRAY:
1188                                 break;
1189                         default:
1190                                 return 0;
1191                         }
1192                         continue;
1193                 case STACK_R8:
1194                         if (sig->params [i]->byref)
1195                                 return 0;
1196                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1197                                 return 0;
1198                         continue;
1199                 case STACK_PTR:
1200                 case STACK_I4:
1201                 case STACK_I8:
1202                 case STACK_VTYPE:
1203                         break;
1204                 }
1205                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1206                         return 0;*/
1207         }
1208         return 1;
1209 }
1210 #endif
1211
1212 /*
1213  * When we need a pointer to the current domain many times in a method, we
1214  * call mono_domain_get() once and we store the result in a local variable.
1215  * This function returns the variable that represents the MonoDomain*.
1216  */
1217 inline static MonoInst *
1218 mono_get_domainvar (MonoCompile *cfg)
1219 {
1220         if (!cfg->domainvar)
1221                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1222         return cfg->domainvar;
1223 }
1224
1225 /*
1226  * The got_var contains the address of the Global Offset Table when AOT
1227  * compiling.
1228  */
1229 MonoInst *
1230 mono_get_got_var (MonoCompile *cfg)
1231 {
1232         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1233                 return NULL;
1234         if (!cfg->got_var) {
1235                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1236         }
1237         return cfg->got_var;
1238 }
1239
1240 static MonoInst *
1241 mono_get_vtable_var (MonoCompile *cfg)
1242 {
1243         g_assert (cfg->gshared);
1244
1245         if (!cfg->rgctx_var) {
1246                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1247                 /* force the var to be stack allocated */
1248                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1249         }
1250
1251         return cfg->rgctx_var;
1252 }
1253
1254 static MonoType*
1255 type_from_stack_type (MonoInst *ins) {
1256         switch (ins->type) {
1257         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1258         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1259         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1260         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1261         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1262         case STACK_MP:
1263                 return &ins->klass->this_arg;
1264         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1265         case STACK_VTYPE: return &ins->klass->byval_arg;
1266         default:
1267                 g_error ("stack type %d to monotype not handled\n", ins->type);
1268         }
1269         return NULL;
1270 }
1271
1272 static G_GNUC_UNUSED int
1273 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1274 {
1275         t = mono_type_get_underlying_type (t);
1276         switch (t->type) {
1277         case MONO_TYPE_I1:
1278         case MONO_TYPE_U1:
1279         case MONO_TYPE_I2:
1280         case MONO_TYPE_U2:
1281         case MONO_TYPE_I4:
1282         case MONO_TYPE_U4:
1283                 return STACK_I4;
1284         case MONO_TYPE_I:
1285         case MONO_TYPE_U:
1286         case MONO_TYPE_PTR:
1287         case MONO_TYPE_FNPTR:
1288                 return STACK_PTR;
1289         case MONO_TYPE_CLASS:
1290         case MONO_TYPE_STRING:
1291         case MONO_TYPE_OBJECT:
1292         case MONO_TYPE_SZARRAY:
1293         case MONO_TYPE_ARRAY:
1294                 return STACK_OBJ;
1295         case MONO_TYPE_I8:
1296         case MONO_TYPE_U8:
1297                 return STACK_I8;
1298         case MONO_TYPE_R4:
1299                 return cfg->r4_stack_type;
1300         case MONO_TYPE_R8:
1301                 return STACK_R8;
1302         case MONO_TYPE_VALUETYPE:
1303         case MONO_TYPE_TYPEDBYREF:
1304                 return STACK_VTYPE;
1305         case MONO_TYPE_GENERICINST:
1306                 if (mono_type_generic_inst_is_valuetype (t))
1307                         return STACK_VTYPE;
1308                 else
1309                         return STACK_OBJ;
1310                 break;
1311         default:
1312                 g_assert_not_reached ();
1313         }
1314
1315         return -1;
1316 }
1317
1318 static MonoClass*
1319 array_access_to_klass (int opcode)
1320 {
1321         switch (opcode) {
1322         case CEE_LDELEM_U1:
1323                 return mono_defaults.byte_class;
1324         case CEE_LDELEM_U2:
1325                 return mono_defaults.uint16_class;
1326         case CEE_LDELEM_I:
1327         case CEE_STELEM_I:
1328                 return mono_defaults.int_class;
1329         case CEE_LDELEM_I1:
1330         case CEE_STELEM_I1:
1331                 return mono_defaults.sbyte_class;
1332         case CEE_LDELEM_I2:
1333         case CEE_STELEM_I2:
1334                 return mono_defaults.int16_class;
1335         case CEE_LDELEM_I4:
1336         case CEE_STELEM_I4:
1337                 return mono_defaults.int32_class;
1338         case CEE_LDELEM_U4:
1339                 return mono_defaults.uint32_class;
1340         case CEE_LDELEM_I8:
1341         case CEE_STELEM_I8:
1342                 return mono_defaults.int64_class;
1343         case CEE_LDELEM_R4:
1344         case CEE_STELEM_R4:
1345                 return mono_defaults.single_class;
1346         case CEE_LDELEM_R8:
1347         case CEE_STELEM_R8:
1348                 return mono_defaults.double_class;
1349         case CEE_LDELEM_REF:
1350         case CEE_STELEM_REF:
1351                 return mono_defaults.object_class;
1352         default:
1353                 g_assert_not_reached ();
1354         }
1355         return NULL;
1356 }
1357
1358 /*
1359  * We try to share variables when possible
1360  */
1361 static MonoInst *
1362 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1363 {
1364         MonoInst *res;
1365         int pos, vnum;
1366
1367         /* inlining can result in deeper stacks */
1368         if (slot >= cfg->header->max_stack)
1369                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1370
1371         pos = ins->type - 1 + slot * STACK_MAX;
1372
1373         switch (ins->type) {
1374         case STACK_I4:
1375         case STACK_I8:
1376         case STACK_R8:
1377         case STACK_PTR:
1378         case STACK_MP:
1379         case STACK_OBJ:
1380                 if ((vnum = cfg->intvars [pos]))
1381                         return cfg->varinfo [vnum];
1382                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1383                 cfg->intvars [pos] = res->inst_c0;
1384                 break;
1385         default:
1386                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1387         }
1388         return res;
1389 }
1390
1391 static void
1392 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1393 {
1394         /*
1395          * Don't use this if a generic_context is set, since that means AOT can't
1396          * look up the method using just the image+token.
1397          * table == 0 means this is a reference made from a wrapper.
1398          */
1399         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1400                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1401                 jump_info_token->image = image;
1402                 jump_info_token->token = token;
1403                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1404         }
1405 }
1406
1407 /*
1408  * This function is called to handle items that are left on the evaluation stack
1409  * at basic block boundaries. What happens is that we save the values to local variables
1410  * and we reload them later when first entering the target basic block (with the
1411  * handle_loaded_temps () function).
1412  * A single joint point will use the same variables (stored in the array bb->out_stack or
1413  * bb->in_stack, if the basic block is before or after the joint point).
1414  *
1415  * This function needs to be called _before_ emitting the last instruction of
1416  * the bb (i.e. before emitting a branch).
1417  * If the stack merge fails at a join point, cfg->unverifiable is set.
1418  */
1419 static void
1420 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1421 {
1422         int i, bindex;
1423         MonoBasicBlock *bb = cfg->cbb;
1424         MonoBasicBlock *outb;
1425         MonoInst *inst, **locals;
1426         gboolean found;
1427
1428         if (!count)
1429                 return;
1430         if (cfg->verbose_level > 3)
1431                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1432         if (!bb->out_scount) {
1433                 bb->out_scount = count;
1434                 //printf ("bblock %d has out:", bb->block_num);
1435                 found = FALSE;
1436                 for (i = 0; i < bb->out_count; ++i) {
1437                         outb = bb->out_bb [i];
1438                         /* exception handlers are linked, but they should not be considered for stack args */
1439                         if (outb->flags & BB_EXCEPTION_HANDLER)
1440                                 continue;
1441                         //printf (" %d", outb->block_num);
1442                         if (outb->in_stack) {
1443                                 found = TRUE;
1444                                 bb->out_stack = outb->in_stack;
1445                                 break;
1446                         }
1447                 }
1448                 //printf ("\n");
1449                 if (!found) {
1450                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1451                         for (i = 0; i < count; ++i) {
1452                                 /*
1453                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1454                                  * stack slot and if they are of the same type.
1455                                  * This won't cause conflicts since if 'local' is used to
1456                                  * store one of the values in the in_stack of a bblock, then
1457                                  * the same variable will be used for the same outgoing stack
1458                                  * slot as well.
1459                                  * This doesn't work when inlining methods, since the bblocks
1460                                  * in the inlined methods do not inherit their in_stack from
1461                                  * the bblock they are inlined to. See bug #58863 for an
1462                                  * example.
1463                                  */
1464                                 if (cfg->inlined_method)
1465                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1466                                 else
1467                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1468                         }
1469                 }
1470         }
1471
1472         for (i = 0; i < bb->out_count; ++i) {
1473                 outb = bb->out_bb [i];
1474                 /* exception handlers are linked, but they should not be considered for stack args */
1475                 if (outb->flags & BB_EXCEPTION_HANDLER)
1476                         continue;
1477                 if (outb->in_scount) {
1478                         if (outb->in_scount != bb->out_scount) {
1479                                 cfg->unverifiable = TRUE;
1480                                 return;
1481                         }
1482                         continue; /* check they are the same locals */
1483                 }
1484                 outb->in_scount = count;
1485                 outb->in_stack = bb->out_stack;
1486         }
1487
1488         locals = bb->out_stack;
1489         cfg->cbb = bb;
1490         for (i = 0; i < count; ++i) {
1491                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1492                 inst->cil_code = sp [i]->cil_code;
1493                 sp [i] = locals [i];
1494                 if (cfg->verbose_level > 3)
1495                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1496         }
1497
1498         /*
1499          * It is possible that the out bblocks already have in_stack assigned, and
1500          * the in_stacks differ. In this case, we will store to all the different
1501          * in_stacks.
1502          */
1503
1504         found = TRUE;
1505         bindex = 0;
1506         while (found) {
1507                 /* Find a bblock which has a different in_stack */
1508                 found = FALSE;
1509                 while (bindex < bb->out_count) {
1510                         outb = bb->out_bb [bindex];
1511                         /* exception handlers are linked, but they should not be considered for stack args */
1512                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1513                                 bindex++;
1514                                 continue;
1515                         }
1516                         if (outb->in_stack != locals) {
1517                                 for (i = 0; i < count; ++i) {
1518                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1519                                         inst->cil_code = sp [i]->cil_code;
1520                                         sp [i] = locals [i];
1521                                         if (cfg->verbose_level > 3)
1522                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1523                                 }
1524                                 locals = outb->in_stack;
1525                                 found = TRUE;
1526                                 break;
1527                         }
1528                         bindex ++;
1529                 }
1530         }
1531 }
1532
1533 static MonoInst*
1534 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1535 {
1536         MonoInst *ins;
1537
1538         if (cfg->compile_aot) {
1539                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1540         } else {
1541                 MonoJumpInfo ji;
1542                 gpointer target;
1543                 MonoError error;
1544
1545                 ji.type = patch_type;
1546                 ji.data.target = data;
1547                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1548                 mono_error_assert_ok (&error);
1549
1550                 EMIT_NEW_PCONST (cfg, ins, target);
1551         }
1552         return ins;
1553 }
1554
1555 static void
1556 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1557 {
1558         int ibitmap_reg = alloc_preg (cfg);
1559 #ifdef COMPRESSED_INTERFACE_BITMAP
1560         MonoInst *args [2];
1561         MonoInst *res, *ins;
1562         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1563         MONO_ADD_INS (cfg->cbb, ins);
1564         args [0] = ins;
1565         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1566         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1567         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1568 #else
1569         int ibitmap_byte_reg = alloc_preg (cfg);
1570
1571         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1572
1573         if (cfg->compile_aot) {
1574                 int iid_reg = alloc_preg (cfg);
1575                 int shifted_iid_reg = alloc_preg (cfg);
1576                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1577                 int masked_iid_reg = alloc_preg (cfg);
1578                 int iid_one_bit_reg = alloc_preg (cfg);
1579                 int iid_bit_reg = alloc_preg (cfg);
1580                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1581                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1582                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1583                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1584                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1585                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1586                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1587                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1588         } else {
1589                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1590                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1591         }
1592 #endif
1593 }
1594
1595 /*
1596  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1597  * stored in "klass_reg" implements the interface "klass".
1598  */
1599 static void
1600 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1601 {
1602         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1603 }
1604
1605 /*
1606  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1607  * stored in "vtable_reg" implements the interface "klass".
1608  */
1609 static void
1610 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1611 {
1612         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1613 }
1614
1615 /*
1616  * Emit code which checks whenever the interface id of @klass is smaller than
1617  * than the value given by max_iid_reg.
1618 */
1619 static void
1620 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1621                                                  MonoBasicBlock *false_target)
1622 {
1623         if (cfg->compile_aot) {
1624                 int iid_reg = alloc_preg (cfg);
1625                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1626                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1627         }
1628         else
1629                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1630         if (false_target)
1631                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1632         else
1633                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1634 }
1635
1636 /* Same as above, but obtains max_iid from a vtable */
1637 static void
1638 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1639                                                                  MonoBasicBlock *false_target)
1640 {
1641         int max_iid_reg = alloc_preg (cfg);
1642
1643         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1644         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1645 }
1646
1647 /* Same as above, but obtains max_iid from a klass */
1648 static void
1649 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1650                                                                  MonoBasicBlock *false_target)
1651 {
1652         int max_iid_reg = alloc_preg (cfg);
1653
1654         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1655         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1656 }
1657
1658 static void
1659 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1660 {
1661         int idepth_reg = alloc_preg (cfg);
1662         int stypes_reg = alloc_preg (cfg);
1663         int stype = alloc_preg (cfg);
1664
1665         mono_class_setup_supertypes (klass);
1666
1667         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1668                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1669                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1670                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1671         }
1672         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1673         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1674         if (klass_ins) {
1675                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1676         } else if (cfg->compile_aot) {
1677                 int const_reg = alloc_preg (cfg);
1678                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1679                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1680         } else {
1681                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1682         }
1683         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1684 }
1685
1686 static void
1687 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1688 {
1689         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1690 }
1691
1692 static void
1693 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1694 {
1695         int intf_reg = alloc_preg (cfg);
1696
1697         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1698         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1699         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1700         if (true_target)
1701                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1702         else
1703                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1704 }
1705
1706 /*
1707  * Variant of the above that takes a register to the class, not the vtable.
1708  */
1709 static void
1710 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1711 {
1712         int intf_bit_reg = alloc_preg (cfg);
1713
1714         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1715         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1716         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1717         if (true_target)
1718                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1719         else
1720                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1721 }
1722
1723 static inline void
1724 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1725 {
1726         if (klass_inst) {
1727                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1728         } else {
1729                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1730                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1731         }
1732         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1733 }
1734
1735 static inline void
1736 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1737 {
1738         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1739 }
1740
1741 static inline void
1742 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1743 {
1744         if (cfg->compile_aot) {
1745                 int const_reg = alloc_preg (cfg);
1746                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1747                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1748         } else {
1749                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1750         }
1751         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1752 }
1753
1754 static void
1755 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1756
1757 static void
1758 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1759 {
1760         if (klass->rank) {
1761                 int rank_reg = alloc_preg (cfg);
1762                 int eclass_reg = alloc_preg (cfg);
1763
1764                 g_assert (!klass_inst);
1765                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1766                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1767                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1768                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1769                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1770                 if (klass->cast_class == mono_defaults.object_class) {
1771                         int parent_reg = alloc_preg (cfg);
1772                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1773                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1774                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1775                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1776                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1777                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1778                 } else if (klass->cast_class == mono_defaults.enum_class) {
1779                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1780                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1781                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1782                 } else {
1783                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1784                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1785                 }
1786
1787                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1788                         /* Check that the object is a vector too */
1789                         int bounds_reg = alloc_preg (cfg);
1790                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1791                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1792                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1793                 }
1794         } else {
1795                 int idepth_reg = alloc_preg (cfg);
1796                 int stypes_reg = alloc_preg (cfg);
1797                 int stype = alloc_preg (cfg);
1798
1799                 mono_class_setup_supertypes (klass);
1800
1801                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1802                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1803                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1804                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1805                 }
1806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1807                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1808                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1809         }
1810 }
1811
1812 static void
1813 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1814 {
1815         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1816 }
1817
1818 static void
1819 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1820 {
1821         int val_reg;
1822
1823         g_assert (val == 0);
1824
1825         if (align == 0)
1826                 align = 4;
1827
1828         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1829                 switch (size) {
1830                 case 1:
1831                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1832                         return;
1833                 case 2:
1834                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1835                         return;
1836                 case 4:
1837                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1838                         return;
1839 #if SIZEOF_REGISTER == 8
1840                 case 8:
1841                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1842                         return;
1843 #endif
1844                 }
1845         }
1846
1847         val_reg = alloc_preg (cfg);
1848
1849         if (SIZEOF_REGISTER == 8)
1850                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1851         else
1852                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1853
1854         if (align < 4) {
1855                 /* This could be optimized further if neccesary */
1856                 while (size >= 1) {
1857                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1858                         offset += 1;
1859                         size -= 1;
1860                 }
1861                 return;
1862         }
1863
1864         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1865                 if (offset % 8) {
1866                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1867                         offset += 4;
1868                         size -= 4;
1869                 }
1870                 while (size >= 8) {
1871                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1872                         offset += 8;
1873                         size -= 8;
1874                 }
1875         }
1876
1877         while (size >= 4) {
1878                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1879                 offset += 4;
1880                 size -= 4;
1881         }
1882         while (size >= 2) {
1883                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1884                 offset += 2;
1885                 size -= 2;
1886         }
1887         while (size >= 1) {
1888                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1889                 offset += 1;
1890                 size -= 1;
1891         }
1892 }
1893
1894 void
1895 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1896 {
1897         int cur_reg;
1898
1899         if (align == 0)
1900                 align = 4;
1901
1902         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1903         g_assert (size < 10000);
1904
1905         if (align < 4) {
1906                 /* This could be optimized further if neccesary */
1907                 while (size >= 1) {
1908                         cur_reg = alloc_preg (cfg);
1909                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1910                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1911                         doffset += 1;
1912                         soffset += 1;
1913                         size -= 1;
1914                 }
1915         }
1916
1917         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1918                 while (size >= 8) {
1919                         cur_reg = alloc_preg (cfg);
1920                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1921                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1922                         doffset += 8;
1923                         soffset += 8;
1924                         size -= 8;
1925                 }
1926         }
1927
1928         while (size >= 4) {
1929                 cur_reg = alloc_preg (cfg);
1930                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1931                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1932                 doffset += 4;
1933                 soffset += 4;
1934                 size -= 4;
1935         }
1936         while (size >= 2) {
1937                 cur_reg = alloc_preg (cfg);
1938                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1939                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1940                 doffset += 2;
1941                 soffset += 2;
1942                 size -= 2;
1943         }
1944         while (size >= 1) {
1945                 cur_reg = alloc_preg (cfg);
1946                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1947                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1948                 doffset += 1;
1949                 soffset += 1;
1950                 size -= 1;
1951         }
1952 }
1953
1954 static void
1955 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1956 {
1957         MonoInst *ins, *c;
1958
1959         if (cfg->compile_aot) {
1960                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1961                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1962                 ins->sreg1 = sreg1;
1963                 ins->sreg2 = c->dreg;
1964                 MONO_ADD_INS (cfg->cbb, ins);
1965         } else {
1966                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1967                 ins->sreg1 = sreg1;
1968                 ins->inst_offset = mini_get_tls_offset (tls_key);
1969                 MONO_ADD_INS (cfg->cbb, ins);
1970         }
1971 }
1972
1973 /*
1974  * emit_push_lmf:
1975  *
1976  *   Emit IR to push the current LMF onto the LMF stack.
1977  */
1978 static void
1979 emit_push_lmf (MonoCompile *cfg)
1980 {
1981         /*
1982          * Emit IR to push the LMF:
1983          * lmf_addr = <lmf_addr from tls>
1984          * lmf->lmf_addr = lmf_addr
1985          * lmf->prev_lmf = *lmf_addr
1986          * *lmf_addr = lmf
1987          */
1988         int lmf_reg, prev_lmf_reg;
1989         MonoInst *ins, *lmf_ins;
1990
1991         if (!cfg->lmf_ir)
1992                 return;
1993
1994         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
1995                 /* Load current lmf */
1996                 lmf_ins = mono_get_lmf_intrinsic (cfg);
1997                 g_assert (lmf_ins);
1998                 MONO_ADD_INS (cfg->cbb, lmf_ins);
1999                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2000                 lmf_reg = ins->dreg;
2001                 /* Save previous_lmf */
2002                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2003                 /* Set new LMF */
2004                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2005         } else {
2006                 /*
2007                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2008                  */
2009                 if (!cfg->lmf_addr_var)
2010                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2011
2012 #ifdef HOST_WIN32
2013                 ins = mono_get_jit_tls_intrinsic (cfg);
2014                 if (ins) {
2015                         int jit_tls_dreg = ins->dreg;
2016
2017                         MONO_ADD_INS (cfg->cbb, ins);
2018                         lmf_reg = alloc_preg (cfg);
2019                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2020                 } else {
2021                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2022                 }
2023 #else
2024                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2025                 if (lmf_ins) {
2026                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2027                 } else {
2028 #ifdef TARGET_IOS
2029                         MonoInst *args [16], *jit_tls_ins, *ins;
2030
2031                         /* Inline mono_get_lmf_addr () */
2032                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2033
2034                         /* Load mono_jit_tls_id */
2035                         if (cfg->compile_aot)
2036                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2037                         else
2038                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2039                         /* call pthread_getspecific () */
2040                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2041                         /* lmf_addr = &jit_tls->lmf */
2042                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2043                         lmf_ins = ins;
2044 #else
2045                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2046 #endif
2047                 }
2048 #endif
2049                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2050
2051                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2052                 lmf_reg = ins->dreg;
2053
2054                 prev_lmf_reg = alloc_preg (cfg);
2055                 /* Save previous_lmf */
2056                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2057                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2058                 /* Set new lmf */
2059                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2060         }
2061 }
2062
2063 /*
2064  * emit_pop_lmf:
2065  *
2066  *   Emit IR to pop the current LMF from the LMF stack.
2067  */
2068 static void
2069 emit_pop_lmf (MonoCompile *cfg)
2070 {
2071         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2072         MonoInst *ins;
2073
2074         if (!cfg->lmf_ir)
2075                 return;
2076
2077         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2078         lmf_reg = ins->dreg;
2079
2080         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2081                 /* Load previous_lmf */
2082                 prev_lmf_reg = alloc_preg (cfg);
2083                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2084                 /* Set new LMF */
2085                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2086         } else {
2087                 /*
2088                  * Emit IR to pop the LMF:
2089                  * *(lmf->lmf_addr) = lmf->prev_lmf
2090                  */
2091                 /* This could be called before emit_push_lmf () */
2092                 if (!cfg->lmf_addr_var)
2093                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2094                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2095
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                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2099         }
2100 }
2101
2102 static void
2103 emit_instrumentation_call (MonoCompile *cfg, void *func)
2104 {
2105         MonoInst *iargs [1];
2106
2107         /*
2108          * Avoid instrumenting inlined methods since it can
2109          * distort profiling results.
2110          */
2111         if (cfg->method != cfg->current_method)
2112                 return;
2113
2114         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2115                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2116                 mono_emit_jit_icall (cfg, func, iargs);
2117         }
2118 }
2119
2120 static int
2121 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2122 {
2123 handle_enum:
2124         type = mini_get_underlying_type (type);
2125         switch (type->type) {
2126         case MONO_TYPE_VOID:
2127                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2128         case MONO_TYPE_I1:
2129         case MONO_TYPE_U1:
2130         case MONO_TYPE_I2:
2131         case MONO_TYPE_U2:
2132         case MONO_TYPE_I4:
2133         case MONO_TYPE_U4:
2134                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2135         case MONO_TYPE_I:
2136         case MONO_TYPE_U:
2137         case MONO_TYPE_PTR:
2138         case MONO_TYPE_FNPTR:
2139                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2140         case MONO_TYPE_CLASS:
2141         case MONO_TYPE_STRING:
2142         case MONO_TYPE_OBJECT:
2143         case MONO_TYPE_SZARRAY:
2144         case MONO_TYPE_ARRAY:
2145                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2146         case MONO_TYPE_I8:
2147         case MONO_TYPE_U8:
2148                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2149         case MONO_TYPE_R4:
2150                 if (cfg->r4fp)
2151                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2152                 else
2153                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2154         case MONO_TYPE_R8:
2155                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2156         case MONO_TYPE_VALUETYPE:
2157                 if (type->data.klass->enumtype) {
2158                         type = mono_class_enum_basetype (type->data.klass);
2159                         goto handle_enum;
2160                 } else
2161                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2162         case MONO_TYPE_TYPEDBYREF:
2163                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2164         case MONO_TYPE_GENERICINST:
2165                 type = &type->data.generic_class->container_class->byval_arg;
2166                 goto handle_enum;
2167         case MONO_TYPE_VAR:
2168         case MONO_TYPE_MVAR:
2169                 /* gsharedvt */
2170                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2171         default:
2172                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2173         }
2174         return -1;
2175 }
2176
2177 //XXX this ignores if t is byref
2178 #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)))))
2179
2180 /*
2181  * target_type_is_incompatible:
2182  * @cfg: MonoCompile context
2183  *
2184  * Check that the item @arg on the evaluation stack can be stored
2185  * in the target type (can be a local, or field, etc).
2186  * The cfg arg can be used to check if we need verification or just
2187  * validity checks.
2188  *
2189  * Returns: non-0 value if arg can't be stored on a target.
2190  */
2191 static int
2192 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2193 {
2194         MonoType *simple_type;
2195         MonoClass *klass;
2196
2197         if (target->byref) {
2198                 /* FIXME: check that the pointed to types match */
2199                 if (arg->type == STACK_MP) {
2200                         if (cfg->verbose_level) printf ("ok\n");
2201                         /* This is needed to handle gshared types + ldaddr. We lower the types so we can handle enums and other typedef-like types. */
2202                         MonoClass *target_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&mono_class_from_mono_type (target)->byval_arg));
2203                         MonoClass *source_class_lowered = mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg));
2204
2205                         /* if the target is native int& or same type */
2206                         if (target->type == MONO_TYPE_I || target_class_lowered == source_class_lowered)
2207                                 return 0;
2208
2209                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2210                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (&target_class_lowered->byval_arg) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&source_class_lowered->byval_arg) &&
2211                                 mono_class_instance_size (target_class_lowered) <= mono_class_instance_size (source_class_lowered))
2212                                 return 0;
2213                         return 1;
2214                 }
2215                 if (arg->type == STACK_PTR)
2216                         return 0;
2217                 return 1;
2218         }
2219
2220         simple_type = mini_get_underlying_type (target);
2221         switch (simple_type->type) {
2222         case MONO_TYPE_VOID:
2223                 return 1;
2224         case MONO_TYPE_I1:
2225         case MONO_TYPE_U1:
2226         case MONO_TYPE_I2:
2227         case MONO_TYPE_U2:
2228         case MONO_TYPE_I4:
2229         case MONO_TYPE_U4:
2230                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2231                         return 1;
2232                 return 0;
2233         case MONO_TYPE_PTR:
2234                 /* STACK_MP is needed when setting pinned locals */
2235                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2236                         return 1;
2237                 return 0;
2238         case MONO_TYPE_I:
2239         case MONO_TYPE_U:
2240         case MONO_TYPE_FNPTR:
2241                 /*
2242                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2243                  * in native int. (#688008).
2244                  */
2245                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2246                         return 1;
2247                 return 0;
2248         case MONO_TYPE_CLASS:
2249         case MONO_TYPE_STRING:
2250         case MONO_TYPE_OBJECT:
2251         case MONO_TYPE_SZARRAY:
2252         case MONO_TYPE_ARRAY:
2253                 if (arg->type != STACK_OBJ)
2254                         return 1;
2255                 /* FIXME: check type compatibility */
2256                 return 0;
2257         case MONO_TYPE_I8:
2258         case MONO_TYPE_U8:
2259                 if (arg->type != STACK_I8)
2260                         return 1;
2261                 return 0;
2262         case MONO_TYPE_R4:
2263                 if (arg->type != cfg->r4_stack_type)
2264                         return 1;
2265                 return 0;
2266         case MONO_TYPE_R8:
2267                 if (arg->type != STACK_R8)
2268                         return 1;
2269                 return 0;
2270         case MONO_TYPE_VALUETYPE:
2271                 if (arg->type != STACK_VTYPE)
2272                         return 1;
2273                 klass = mono_class_from_mono_type (simple_type);
2274                 if (klass != arg->klass)
2275                         return 1;
2276                 return 0;
2277         case MONO_TYPE_TYPEDBYREF:
2278                 if (arg->type != STACK_VTYPE)
2279                         return 1;
2280                 klass = mono_class_from_mono_type (simple_type);
2281                 if (klass != arg->klass)
2282                         return 1;
2283                 return 0;
2284         case MONO_TYPE_GENERICINST:
2285                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2286                         MonoClass *target_class;
2287                         if (arg->type != STACK_VTYPE)
2288                                 return 1;
2289                         klass = mono_class_from_mono_type (simple_type);
2290                         target_class = mono_class_from_mono_type (target);
2291                         /* The second cases is needed when doing partial sharing */
2292                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2293                                 return 1;
2294                         return 0;
2295                 } else {
2296                         if (arg->type != STACK_OBJ)
2297                                 return 1;
2298                         /* FIXME: check type compatibility */
2299                         return 0;
2300                 }
2301         case MONO_TYPE_VAR:
2302         case MONO_TYPE_MVAR:
2303                 g_assert (cfg->gshared);
2304                 if (mini_type_var_is_vt (simple_type)) {
2305                         if (arg->type != STACK_VTYPE)
2306                                 return 1;
2307                 } else {
2308                         if (arg->type != STACK_OBJ)
2309                                 return 1;
2310                 }
2311                 return 0;
2312         default:
2313                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2314         }
2315         return 1;
2316 }
2317
2318 /*
2319  * Prepare arguments for passing to a function call.
2320  * Return a non-zero value if the arguments can't be passed to the given
2321  * signature.
2322  * The type checks are not yet complete and some conversions may need
2323  * casts on 32 or 64 bit architectures.
2324  *
2325  * FIXME: implement this using target_type_is_incompatible ()
2326  */
2327 static int
2328 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2329 {
2330         MonoType *simple_type;
2331         int i;
2332
2333         if (sig->hasthis) {
2334                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2335                         return 1;
2336                 args++;
2337         }
2338         for (i = 0; i < sig->param_count; ++i) {
2339                 if (sig->params [i]->byref) {
2340                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2341                                 return 1;
2342                         continue;
2343                 }
2344                 simple_type = mini_get_underlying_type (sig->params [i]);
2345 handle_enum:
2346                 switch (simple_type->type) {
2347                 case MONO_TYPE_VOID:
2348                         return 1;
2349                         continue;
2350                 case MONO_TYPE_I1:
2351                 case MONO_TYPE_U1:
2352                 case MONO_TYPE_I2:
2353                 case MONO_TYPE_U2:
2354                 case MONO_TYPE_I4:
2355                 case MONO_TYPE_U4:
2356                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2357                                 return 1;
2358                         continue;
2359                 case MONO_TYPE_I:
2360                 case MONO_TYPE_U:
2361                 case MONO_TYPE_PTR:
2362                 case MONO_TYPE_FNPTR:
2363                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2364                                 return 1;
2365                         continue;
2366                 case MONO_TYPE_CLASS:
2367                 case MONO_TYPE_STRING:
2368                 case MONO_TYPE_OBJECT:
2369                 case MONO_TYPE_SZARRAY:
2370                 case MONO_TYPE_ARRAY:
2371                         if (args [i]->type != STACK_OBJ)
2372                                 return 1;
2373                         continue;
2374                 case MONO_TYPE_I8:
2375                 case MONO_TYPE_U8:
2376                         if (args [i]->type != STACK_I8)
2377                                 return 1;
2378                         continue;
2379                 case MONO_TYPE_R4:
2380                         if (args [i]->type != cfg->r4_stack_type)
2381                                 return 1;
2382                         continue;
2383                 case MONO_TYPE_R8:
2384                         if (args [i]->type != STACK_R8)
2385                                 return 1;
2386                         continue;
2387                 case MONO_TYPE_VALUETYPE:
2388                         if (simple_type->data.klass->enumtype) {
2389                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2390                                 goto handle_enum;
2391                         }
2392                         if (args [i]->type != STACK_VTYPE)
2393                                 return 1;
2394                         continue;
2395                 case MONO_TYPE_TYPEDBYREF:
2396                         if (args [i]->type != STACK_VTYPE)
2397                                 return 1;
2398                         continue;
2399                 case MONO_TYPE_GENERICINST:
2400                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2401                         goto handle_enum;
2402                 case MONO_TYPE_VAR:
2403                 case MONO_TYPE_MVAR:
2404                         /* gsharedvt */
2405                         if (args [i]->type != STACK_VTYPE)
2406                                 return 1;
2407                         continue;
2408                 default:
2409                         g_error ("unknown type 0x%02x in check_call_signature",
2410                                  simple_type->type);
2411                 }
2412         }
2413         return 0;
2414 }
2415
2416 static int
2417 callvirt_to_call (int opcode)
2418 {
2419         switch (opcode) {
2420         case OP_CALL_MEMBASE:
2421                 return OP_CALL;
2422         case OP_VOIDCALL_MEMBASE:
2423                 return OP_VOIDCALL;
2424         case OP_FCALL_MEMBASE:
2425                 return OP_FCALL;
2426         case OP_RCALL_MEMBASE:
2427                 return OP_RCALL;
2428         case OP_VCALL_MEMBASE:
2429                 return OP_VCALL;
2430         case OP_LCALL_MEMBASE:
2431                 return OP_LCALL;
2432         default:
2433                 g_assert_not_reached ();
2434         }
2435
2436         return -1;
2437 }
2438
2439 static int
2440 callvirt_to_call_reg (int opcode)
2441 {
2442         switch (opcode) {
2443         case OP_CALL_MEMBASE:
2444                 return OP_CALL_REG;
2445         case OP_VOIDCALL_MEMBASE:
2446                 return OP_VOIDCALL_REG;
2447         case OP_FCALL_MEMBASE:
2448                 return OP_FCALL_REG;
2449         case OP_RCALL_MEMBASE:
2450                 return OP_RCALL_REG;
2451         case OP_VCALL_MEMBASE:
2452                 return OP_VCALL_REG;
2453         case OP_LCALL_MEMBASE:
2454                 return OP_LCALL_REG;
2455         default:
2456                 g_assert_not_reached ();
2457         }
2458
2459         return -1;
2460 }
2461
2462 /* Either METHOD or IMT_ARG needs to be set */
2463 static void
2464 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2465 {
2466         int method_reg;
2467
2468         if (COMPILE_LLVM (cfg)) {
2469                 if (imt_arg) {
2470                         method_reg = alloc_preg (cfg);
2471                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2472                 } else {
2473                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2474                         method_reg = ins->dreg;
2475                 }
2476
2477 #ifdef ENABLE_LLVM
2478                 call->imt_arg_reg = method_reg;
2479 #endif
2480                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2481                 return;
2482         }
2483
2484         if (imt_arg) {
2485                 method_reg = alloc_preg (cfg);
2486                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2487         } else {
2488                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2489                 method_reg = ins->dreg;
2490         }
2491
2492         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2493 }
2494
2495 static MonoJumpInfo *
2496 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2497 {
2498         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2499
2500         ji->ip.i = ip;
2501         ji->type = type;
2502         ji->data.target = target;
2503
2504         return ji;
2505 }
2506
2507 static int
2508 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2509 {
2510         if (cfg->gshared)
2511                 return mono_class_check_context_used (klass);
2512         else
2513                 return 0;
2514 }
2515
2516 static int
2517 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2518 {
2519         if (cfg->gshared)
2520                 return mono_method_check_context_used (method);
2521         else
2522                 return 0;
2523 }
2524
2525 /*
2526  * check_method_sharing:
2527  *
2528  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2529  */
2530 static void
2531 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2532 {
2533         gboolean pass_vtable = FALSE;
2534         gboolean pass_mrgctx = FALSE;
2535
2536         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2537                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2538                 gboolean sharable = FALSE;
2539
2540                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2541                         sharable = TRUE;
2542
2543                 /*
2544                  * Pass vtable iff target method might
2545                  * be shared, which means that sharing
2546                  * is enabled for its class and its
2547                  * context is sharable (and it's not a
2548                  * generic method).
2549                  */
2550                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2551                         pass_vtable = TRUE;
2552         }
2553
2554         if (mini_method_get_context (cmethod) &&
2555                 mini_method_get_context (cmethod)->method_inst) {
2556                 g_assert (!pass_vtable);
2557
2558                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2559                         pass_mrgctx = TRUE;
2560                 } else {
2561                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2562                                 pass_mrgctx = TRUE;
2563                 }
2564         }
2565
2566         if (out_pass_vtable)
2567                 *out_pass_vtable = pass_vtable;
2568         if (out_pass_mrgctx)
2569                 *out_pass_mrgctx = pass_mrgctx;
2570 }
2571
2572 inline static MonoCallInst *
2573 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2574                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2575 {
2576         MonoType *sig_ret;
2577         MonoCallInst *call;
2578 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2579         int i;
2580 #endif
2581
2582         if (cfg->llvm_only)
2583                 tail = FALSE;
2584
2585         if (tail) {
2586                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2587
2588                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2589         } else
2590                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2591
2592         call->args = args;
2593         call->signature = sig;
2594         call->rgctx_reg = rgctx;
2595         sig_ret = mini_get_underlying_type (sig->ret);
2596
2597         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2598
2599         if (tail) {
2600                 if (mini_type_is_vtype (sig_ret)) {
2601                         call->vret_var = cfg->vret_addr;
2602                         //g_assert_not_reached ();
2603                 }
2604         } else if (mini_type_is_vtype (sig_ret)) {
2605                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2606                 MonoInst *loada;
2607
2608                 temp->backend.is_pinvoke = sig->pinvoke;
2609
2610                 /*
2611                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2612                  * address of return value to increase optimization opportunities.
2613                  * Before vtype decomposition, the dreg of the call ins itself represents the
2614                  * fact the call modifies the return value. After decomposition, the call will
2615                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2616                  * will be transformed into an LDADDR.
2617                  */
2618                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2619                 loada->dreg = alloc_preg (cfg);
2620                 loada->inst_p0 = temp;
2621                 /* We reference the call too since call->dreg could change during optimization */
2622                 loada->inst_p1 = call;
2623                 MONO_ADD_INS (cfg->cbb, loada);
2624
2625                 call->inst.dreg = temp->dreg;
2626
2627                 call->vret_var = loada;
2628         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2629                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2630
2631 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2632         if (COMPILE_SOFT_FLOAT (cfg)) {
2633                 /*
2634                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2635                  * an icall, but that cannot be done during the call sequence since it would clobber
2636                  * the call registers + the stack. So we do it before emitting the call.
2637                  */
2638                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2639                         MonoType *t;
2640                         MonoInst *in = call->args [i];
2641
2642                         if (i >= sig->hasthis)
2643                                 t = sig->params [i - sig->hasthis];
2644                         else
2645                                 t = &mono_defaults.int_class->byval_arg;
2646                         t = mono_type_get_underlying_type (t);
2647
2648                         if (!t->byref && t->type == MONO_TYPE_R4) {
2649                                 MonoInst *iargs [1];
2650                                 MonoInst *conv;
2651
2652                                 iargs [0] = in;
2653                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2654
2655                                 /* The result will be in an int vreg */
2656                                 call->args [i] = conv;
2657                         }
2658                 }
2659         }
2660 #endif
2661
2662         call->need_unbox_trampoline = unbox_trampoline;
2663
2664 #ifdef ENABLE_LLVM
2665         if (COMPILE_LLVM (cfg))
2666                 mono_llvm_emit_call (cfg, call);
2667         else
2668                 mono_arch_emit_call (cfg, call);
2669 #else
2670         mono_arch_emit_call (cfg, call);
2671 #endif
2672
2673         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2674         cfg->flags |= MONO_CFG_HAS_CALLS;
2675
2676         return call;
2677 }
2678
2679 static void
2680 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2681 {
2682         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2683         cfg->uses_rgctx_reg = TRUE;
2684         call->rgctx_reg = TRUE;
2685 #ifdef ENABLE_LLVM
2686         call->rgctx_arg_reg = rgctx_reg;
2687 #endif
2688 }
2689
2690 inline static MonoInst*
2691 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2692 {
2693         MonoCallInst *call;
2694         MonoInst *ins;
2695         int rgctx_reg = -1;
2696         gboolean check_sp = FALSE;
2697
2698         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2699                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2700
2701                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2702                         check_sp = TRUE;
2703         }
2704
2705         if (rgctx_arg) {
2706                 rgctx_reg = mono_alloc_preg (cfg);
2707                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2708         }
2709
2710         if (check_sp) {
2711                 if (!cfg->stack_inbalance_var)
2712                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2713
2714                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2715                 ins->dreg = cfg->stack_inbalance_var->dreg;
2716                 MONO_ADD_INS (cfg->cbb, ins);
2717         }
2718
2719         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2720
2721         call->inst.sreg1 = addr->dreg;
2722
2723         if (imt_arg)
2724                 emit_imt_argument (cfg, call, NULL, imt_arg);
2725
2726         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2727
2728         if (check_sp) {
2729                 int sp_reg;
2730
2731                 sp_reg = mono_alloc_preg (cfg);
2732
2733                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2734                 ins->dreg = sp_reg;
2735                 MONO_ADD_INS (cfg->cbb, ins);
2736
2737                 /* Restore the stack so we don't crash when throwing the exception */
2738                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2739                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2740                 MONO_ADD_INS (cfg->cbb, ins);
2741
2742                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2743                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2744         }
2745
2746         if (rgctx_arg)
2747                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2748
2749         return (MonoInst*)call;
2750 }
2751
2752 static MonoInst*
2753 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2754
2755 static MonoInst*
2756 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2757 static MonoInst*
2758 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2759
2760 static MonoInst*
2761 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2762                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2763 {
2764 #ifndef DISABLE_REMOTING
2765         gboolean might_be_remote = FALSE;
2766 #endif
2767         gboolean virtual_ = this_ins != NULL;
2768         gboolean enable_for_aot = TRUE;
2769         int context_used;
2770         MonoCallInst *call;
2771         MonoInst *call_target = NULL;
2772         int rgctx_reg = 0;
2773         gboolean need_unbox_trampoline;
2774
2775         if (!sig)
2776                 sig = mono_method_signature (method);
2777
2778         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2779                 g_assert_not_reached ();
2780
2781         if (rgctx_arg) {
2782                 rgctx_reg = mono_alloc_preg (cfg);
2783                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2784         }
2785
2786         if (method->string_ctor) {
2787                 /* Create the real signature */
2788                 /* FIXME: Cache these */
2789                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2790                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2791
2792                 sig = ctor_sig;
2793         }
2794
2795         context_used = mini_method_check_context_used (cfg, method);
2796
2797 #ifndef DISABLE_REMOTING
2798         might_be_remote = this_ins && sig->hasthis &&
2799                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2800                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2801
2802         if (might_be_remote && context_used) {
2803                 MonoInst *addr;
2804
2805                 g_assert (cfg->gshared);
2806
2807                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2808
2809                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2810         }
2811 #endif
2812
2813         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2814                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2815
2816         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2817
2818         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2819
2820 #ifndef DISABLE_REMOTING
2821         if (might_be_remote)
2822                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2823         else
2824 #endif
2825                 call->method = method;
2826         call->inst.flags |= MONO_INST_HAS_METHOD;
2827         call->inst.inst_left = this_ins;
2828         call->tail_call = tail;
2829
2830         if (virtual_) {
2831                 int vtable_reg, slot_reg, this_reg;
2832                 int offset;
2833
2834                 this_reg = this_ins->dreg;
2835
2836                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2837                         MonoInst *dummy_use;
2838
2839                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2840
2841                         /* Make a call to delegate->invoke_impl */
2842                         call->inst.inst_basereg = this_reg;
2843                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2844                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2845
2846                         /* We must emit a dummy use here because the delegate trampoline will
2847                         replace the 'this' argument with the delegate target making this activation
2848                         no longer a root for the delegate.
2849                         This is an issue for delegates that target collectible code such as dynamic
2850                         methods of GC'able assemblies.
2851
2852                         For a test case look into #667921.
2853
2854                         FIXME: a dummy use is not the best way to do it as the local register allocator
2855                         will put it on a caller save register and spil it around the call.
2856                         Ideally, we would either put it on a callee save register or only do the store part.
2857                          */
2858                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2859
2860                         return (MonoInst*)call;
2861                 }
2862
2863                 if ((!cfg->compile_aot || enable_for_aot) &&
2864                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2865                          (MONO_METHOD_IS_FINAL (method) &&
2866                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2867                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2868                         /*
2869                          * the method is not virtual, we just need to ensure this is not null
2870                          * and then we can call the method directly.
2871                          */
2872 #ifndef DISABLE_REMOTING
2873                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2874                                 /*
2875                                  * The check above ensures method is not gshared, this is needed since
2876                                  * gshared methods can't have wrappers.
2877                                  */
2878                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2879                         }
2880 #endif
2881
2882                         if (!method->string_ctor)
2883                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2884
2885                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2886                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2887                         /*
2888                          * the method is virtual, but we can statically dispatch since either
2889                          * it's class or the method itself are sealed.
2890                          * But first we need to ensure it's not a null reference.
2891                          */
2892                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2893
2894                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2895                 } else if (call_target) {
2896                         vtable_reg = alloc_preg (cfg);
2897                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2898
2899                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2900                         call->inst.sreg1 = call_target->dreg;
2901                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2902                 } else {
2903                         vtable_reg = alloc_preg (cfg);
2904                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2905                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2906                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2907                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2908                                 slot_reg = vtable_reg;
2909                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2910                         } else {
2911                                 slot_reg = vtable_reg;
2912                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2913                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2914                                 if (imt_arg) {
2915                                         g_assert (mono_method_signature (method)->generic_param_count);
2916                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2917                                 }
2918                         }
2919
2920                         call->inst.sreg1 = slot_reg;
2921                         call->inst.inst_offset = offset;
2922                         call->is_virtual = TRUE;
2923                 }
2924         }
2925
2926         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2927
2928         if (rgctx_arg)
2929                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2930
2931         return (MonoInst*)call;
2932 }
2933
2934 MonoInst*
2935 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2936 {
2937         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2938 }
2939
2940 MonoInst*
2941 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2942                                            MonoInst **args)
2943 {
2944         MonoCallInst *call;
2945
2946         g_assert (sig);
2947
2948         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2949         call->fptr = func;
2950
2951         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2952
2953         return (MonoInst*)call;
2954 }
2955
2956 MonoInst*
2957 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2958 {
2959         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2960
2961         g_assert (info);
2962
2963         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2964 }
2965
2966 /*
2967  * mono_emit_abs_call:
2968  *
2969  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2970  */
2971 inline static MonoInst*
2972 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2973                                         MonoMethodSignature *sig, MonoInst **args)
2974 {
2975         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2976         MonoInst *ins;
2977
2978         /*
2979          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2980          * handle it.
2981          */
2982         if (cfg->abs_patches == NULL)
2983                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2984         g_hash_table_insert (cfg->abs_patches, ji, ji);
2985         ins = mono_emit_native_call (cfg, ji, sig, args);
2986         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2987         return ins;
2988 }
2989
2990 static MonoMethodSignature*
2991 sig_to_rgctx_sig (MonoMethodSignature *sig)
2992 {
2993         // FIXME: memory allocation
2994         MonoMethodSignature *res;
2995         int i;
2996
2997         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
2998         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
2999         res->param_count = sig->param_count + 1;
3000         for (i = 0; i < sig->param_count; ++i)
3001                 res->params [i] = sig->params [i];
3002         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3003         return res;
3004 }
3005
3006 /* Make an indirect call to FSIG passing an additional argument */
3007 static MonoInst*
3008 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3009 {
3010         MonoMethodSignature *csig;
3011         MonoInst *args_buf [16];
3012         MonoInst **args;
3013         int i, pindex, tmp_reg;
3014
3015         /* Make a call with an rgctx/extra arg */
3016         if (fsig->param_count + 2 < 16)
3017                 args = args_buf;
3018         else
3019                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3020         pindex = 0;
3021         if (fsig->hasthis)
3022                 args [pindex ++] = orig_args [0];
3023         for (i = 0; i < fsig->param_count; ++i)
3024                 args [pindex ++] = orig_args [fsig->hasthis + i];
3025         tmp_reg = alloc_preg (cfg);
3026         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3027         csig = sig_to_rgctx_sig (fsig);
3028         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3029 }
3030
3031 /* Emit an indirect call to the function descriptor ADDR */
3032 static MonoInst*
3033 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3034 {
3035         int addr_reg, arg_reg;
3036         MonoInst *call_target;
3037
3038         g_assert (cfg->llvm_only);
3039
3040         /*
3041          * addr points to a <addr, arg> pair, load both of them, and
3042          * make a call to addr, passing arg as an extra arg.
3043          */
3044         addr_reg = alloc_preg (cfg);
3045         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3046         arg_reg = alloc_preg (cfg);
3047         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3048
3049         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3050 }
3051
3052 static gboolean
3053 direct_icalls_enabled (MonoCompile *cfg)
3054 {
3055         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3056 #ifdef TARGET_AMD64
3057         if (cfg->compile_llvm && !cfg->llvm_only)
3058                 return FALSE;
3059 #endif
3060         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3061                 return FALSE;
3062         return TRUE;
3063 }
3064
3065 MonoInst*
3066 mono_emit_jit_icall_by_info (MonoCompile *cfg, int il_offset, MonoJitICallInfo *info, MonoInst **args)
3067 {
3068         /*
3069          * Call the jit icall without a wrapper if possible.
3070          * The wrapper is needed for the following reasons:
3071          * - to handle exceptions thrown using mono_raise_exceptions () from the
3072          *   icall function. The EH code needs the lmf frame pushed by the
3073          *   wrapper to be able to unwind back to managed code.
3074          * - to be able to do stack walks for asynchronously suspended
3075          *   threads when debugging.
3076          */
3077         if (info->no_raise && direct_icalls_enabled (cfg)) {
3078                 char *name;
3079                 int costs;
3080
3081                 if (!info->wrapper_method) {
3082                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3083                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3084                         g_free (name);
3085                         mono_memory_barrier ();
3086                 }
3087
3088                 /*
3089                  * Inline the wrapper method, which is basically a call to the C icall, and
3090                  * an exception check.
3091                  */
3092                 costs = inline_method (cfg, info->wrapper_method, NULL,
3093                                                            args, NULL, il_offset, TRUE);
3094                 g_assert (costs > 0);
3095                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3096
3097                 return args [0];
3098         } else {
3099                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3100         }
3101 }
3102
3103 static MonoInst*
3104 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3105 {
3106         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3107                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3108                         int widen_op = -1;
3109
3110                         /*
3111                          * Native code might return non register sized integers
3112                          * without initializing the upper bits.
3113                          */
3114                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3115                         case OP_LOADI1_MEMBASE:
3116                                 widen_op = OP_ICONV_TO_I1;
3117                                 break;
3118                         case OP_LOADU1_MEMBASE:
3119                                 widen_op = OP_ICONV_TO_U1;
3120                                 break;
3121                         case OP_LOADI2_MEMBASE:
3122                                 widen_op = OP_ICONV_TO_I2;
3123                                 break;
3124                         case OP_LOADU2_MEMBASE:
3125                                 widen_op = OP_ICONV_TO_U2;
3126                                 break;
3127                         default:
3128                                 break;
3129                         }
3130
3131                         if (widen_op != -1) {
3132                                 int dreg = alloc_preg (cfg);
3133                                 MonoInst *widen;
3134
3135                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3136                                 widen->type = ins->type;
3137                                 ins = widen;
3138                         }
3139                 }
3140         }
3141
3142         return ins;
3143 }
3144
3145
3146 static void
3147 emit_method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
3148 {
3149         MonoInst *args [16];
3150
3151         args [0] = emit_get_rgctx_method (cfg, mono_method_check_context_used (method), method, MONO_RGCTX_INFO_METHOD);
3152         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cil_method), cil_method, MONO_RGCTX_INFO_METHOD);
3153
3154         mono_emit_jit_icall (cfg, mono_throw_method_access, args);
3155 }
3156
3157 static MonoMethod*
3158 get_memcpy_method (void)
3159 {
3160         static MonoMethod *memcpy_method = NULL;
3161         if (!memcpy_method) {
3162                 memcpy_method = mono_class_get_method_from_name (mono_defaults.string_class, "memcpy", 3);
3163                 if (!memcpy_method)
3164                         g_error ("Old corlib found. Install a new one");
3165         }
3166         return memcpy_method;
3167 }
3168
3169 static void
3170 create_write_barrier_bitmap (MonoCompile *cfg, MonoClass *klass, unsigned *wb_bitmap, int offset)
3171 {
3172         MonoClassField *field;
3173         gpointer iter = NULL;
3174
3175         while ((field = mono_class_get_fields (klass, &iter))) {
3176                 int foffset;
3177
3178                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
3179                         continue;
3180                 foffset = klass->valuetype ? field->offset - sizeof (MonoObject): field->offset;
3181                 if (mini_type_is_reference (mono_field_get_type (field))) {
3182                         g_assert ((foffset % SIZEOF_VOID_P) == 0);
3183                         *wb_bitmap |= 1 << ((offset + foffset) / SIZEOF_VOID_P);
3184                 } else {
3185                         MonoClass *field_class = mono_class_from_mono_type (field->type);
3186                         if (field_class->has_references)
3187                                 create_write_barrier_bitmap (cfg, field_class, wb_bitmap, offset + foffset);
3188                 }
3189         }
3190 }
3191
3192 static void
3193 emit_write_barrier (MonoCompile *cfg, MonoInst *ptr, MonoInst *value)
3194 {
3195         int card_table_shift_bits;
3196         gpointer card_table_mask;
3197         guint8 *card_table;
3198         MonoInst *dummy_use;
3199         int nursery_shift_bits;
3200         size_t nursery_size;
3201
3202         if (!cfg->gen_write_barriers)
3203                 return;
3204
3205         card_table = mono_gc_get_card_table (&card_table_shift_bits, &card_table_mask);
3206
3207         mono_gc_get_nursery (&nursery_shift_bits, &nursery_size);
3208
3209         if (cfg->backend->have_card_table_wb && !cfg->compile_aot && card_table && nursery_shift_bits > 0 && !COMPILE_LLVM (cfg)) {
3210                 MonoInst *wbarrier;
3211
3212                 MONO_INST_NEW (cfg, wbarrier, OP_CARD_TABLE_WBARRIER);
3213                 wbarrier->sreg1 = ptr->dreg;
3214                 wbarrier->sreg2 = value->dreg;
3215                 MONO_ADD_INS (cfg->cbb, wbarrier);
3216         } else if (card_table && !cfg->compile_aot && !mono_gc_card_table_nursery_check ()) {
3217                 int offset_reg = alloc_preg (cfg);
3218                 int card_reg;
3219                 MonoInst *ins;
3220
3221                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_UN_IMM, offset_reg, ptr->dreg, card_table_shift_bits);
3222                 if (card_table_mask)
3223                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, offset_reg, offset_reg, card_table_mask);
3224
3225                 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
3226                  * IMM's larger than 32bits.
3227                  */
3228                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
3229                 card_reg = ins->dreg;
3230
3231                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, offset_reg, offset_reg, card_reg);
3232                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, offset_reg, 0, 1);
3233         } else {
3234                 MonoMethod *write_barrier = mono_gc_get_write_barrier ();
3235                 mono_emit_method_call (cfg, write_barrier, &ptr, NULL);
3236         }
3237
3238         EMIT_NEW_DUMMY_USE (cfg, dummy_use, value);
3239 }
3240
3241 static gboolean
3242 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
3243 {
3244         int dest_ptr_reg, tmp_reg, destreg, srcreg, offset;
3245         unsigned need_wb = 0;
3246
3247         if (align == 0)
3248                 align = 4;
3249
3250         /*types with references can't have alignment smaller than sizeof(void*) */
3251         if (align < SIZEOF_VOID_P)
3252                 return FALSE;
3253
3254         /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
3255         if (size > 32 * SIZEOF_VOID_P)
3256                 return FALSE;
3257
3258         create_write_barrier_bitmap (cfg, klass, &need_wb, 0);
3259
3260         /* We don't unroll more than 5 stores to avoid code bloat. */
3261         if (size > 5 * SIZEOF_VOID_P) {
3262                 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
3263                 size += (SIZEOF_VOID_P - 1);
3264                 size &= ~(SIZEOF_VOID_P - 1);
3265
3266                 EMIT_NEW_ICONST (cfg, iargs [2], size);
3267                 EMIT_NEW_ICONST (cfg, iargs [3], need_wb);
3268                 mono_emit_jit_icall (cfg, mono_gc_wbarrier_value_copy_bitmap, iargs);
3269                 return TRUE;
3270         }
3271
3272         destreg = iargs [0]->dreg;
3273         srcreg = iargs [1]->dreg;
3274         offset = 0;
3275
3276         dest_ptr_reg = alloc_preg (cfg);
3277         tmp_reg = alloc_preg (cfg);
3278
3279         /*tmp = dreg*/
3280         EMIT_NEW_UNALU (cfg, iargs [0], OP_MOVE, dest_ptr_reg, destreg);
3281
3282         while (size >= SIZEOF_VOID_P) {
3283                 MonoInst *load_inst;
3284                 MONO_INST_NEW (cfg, load_inst, OP_LOAD_MEMBASE);
3285                 load_inst->dreg = tmp_reg;
3286                 load_inst->inst_basereg = srcreg;
3287                 load_inst->inst_offset = offset;
3288                 MONO_ADD_INS (cfg->cbb, load_inst);
3289
3290                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, dest_ptr_reg, 0, tmp_reg);
3291
3292                 if (need_wb & 0x1)
3293                         emit_write_barrier (cfg, iargs [0], load_inst);
3294
3295                 offset += SIZEOF_VOID_P;
3296                 size -= SIZEOF_VOID_P;
3297                 need_wb >>= 1;
3298
3299                 /*tmp += sizeof (void*)*/
3300                 if (size >= SIZEOF_VOID_P) {
3301                         NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, dest_ptr_reg, dest_ptr_reg, SIZEOF_VOID_P);
3302                         MONO_ADD_INS (cfg->cbb, iargs [0]);
3303                 }
3304         }
3305
3306         /* Those cannot be references since size < sizeof (void*) */
3307         while (size >= 4) {
3308                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, tmp_reg, srcreg, offset);
3309                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, tmp_reg);
3310                 offset += 4;
3311                 size -= 4;
3312         }
3313
3314         while (size >= 2) {
3315                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, tmp_reg, srcreg, offset);
3316                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, tmp_reg);
3317                 offset += 2;
3318                 size -= 2;
3319         }
3320
3321         while (size >= 1) {
3322                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, tmp_reg, srcreg, offset);
3323                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, tmp_reg);
3324                 offset += 1;
3325                 size -= 1;
3326         }
3327
3328         return TRUE;
3329 }
3330
3331 /*
3332  * Emit code to copy a valuetype of type @klass whose address is stored in
3333  * @src->dreg to memory whose address is stored at @dest->dreg.
3334  */
3335 void
3336 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
3337 {
3338         MonoInst *iargs [4];
3339         int n;
3340         guint32 align = 0;
3341         MonoMethod *memcpy_method;
3342         MonoInst *size_ins = NULL;
3343         MonoInst *memcpy_ins = NULL;
3344
3345         g_assert (klass);
3346         if (cfg->gshared)
3347                 klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3348
3349         /*
3350          * This check breaks with spilled vars... need to handle it during verification anyway.
3351          * g_assert (klass && klass == src->klass && klass == dest->klass);
3352          */
3353
3354         if (mini_is_gsharedvt_klass (klass)) {
3355                 g_assert (!native);
3356                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3357                 memcpy_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_MEMCPY);
3358         }
3359
3360         if (native)
3361                 n = mono_class_native_size (klass, &align);
3362         else
3363                 n = mono_class_value_size (klass, &align);
3364
3365         /* if native is true there should be no references in the struct */
3366         if (cfg->gen_write_barriers && (klass->has_references || size_ins) && !native) {
3367                 /* Avoid barriers when storing to the stack */
3368                 if (!((dest->opcode == OP_ADD_IMM && dest->sreg1 == cfg->frame_reg) ||
3369                           (dest->opcode == OP_LDADDR))) {
3370                         int context_used;
3371
3372                         iargs [0] = dest;
3373                         iargs [1] = src;
3374
3375                         context_used = mini_class_check_context_used (cfg, klass);
3376
3377                         /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
3378                         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
3379                                 return;
3380                         } else if (context_used) {
3381                                 iargs [2] = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3382                         }  else {
3383                                 iargs [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
3384                                 if (!cfg->compile_aot)
3385                                         mono_class_compute_gc_descriptor (klass);
3386                         }
3387
3388                         if (size_ins)
3389                                 mono_emit_jit_icall (cfg, mono_gsharedvt_value_copy, iargs);
3390                         else
3391                                 mono_emit_jit_icall (cfg, mono_value_copy, iargs);
3392                         return;
3393                 }
3394         }
3395
3396         if (!size_ins && (cfg->opt & MONO_OPT_INTRINS) && n <= sizeof (gpointer) * 8) {
3397                 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
3398                 mini_emit_memcpy (cfg, dest->dreg, 0, src->dreg, 0, n, align);
3399         } else {
3400                 iargs [0] = dest;
3401                 iargs [1] = src;
3402                 if (size_ins)
3403                         iargs [2] = size_ins;
3404                 else
3405                         EMIT_NEW_ICONST (cfg, iargs [2], n);
3406
3407                 memcpy_method = get_memcpy_method ();
3408                 if (memcpy_ins)
3409                         mono_emit_calli (cfg, mono_method_signature (memcpy_method), iargs, memcpy_ins, NULL, NULL);
3410                 else
3411                         mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
3412         }
3413 }
3414
3415 static MonoMethod*
3416 get_memset_method (void)
3417 {
3418         static MonoMethod *memset_method = NULL;
3419         if (!memset_method) {
3420                 memset_method = mono_class_get_method_from_name (mono_defaults.string_class, "memset", 3);
3421                 if (!memset_method)
3422                         g_error ("Old corlib found. Install a new one");
3423         }
3424         return memset_method;
3425 }
3426
3427 void
3428 mini_emit_initobj (MonoCompile *cfg, MonoInst *dest, const guchar *ip, MonoClass *klass)
3429 {
3430         MonoInst *iargs [3];
3431         int n;
3432         guint32 align;
3433         MonoMethod *memset_method;
3434         MonoInst *size_ins = NULL;
3435         MonoInst *bzero_ins = NULL;
3436         static MonoMethod *bzero_method;
3437
3438         /* FIXME: Optimize this for the case when dest is an LDADDR */
3439         mono_class_init (klass);
3440         if (mini_is_gsharedvt_klass (klass)) {
3441                 size_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_VALUE_SIZE);
3442                 bzero_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_BZERO);
3443                 if (!bzero_method)
3444                         bzero_method = mono_class_get_method_from_name (mono_defaults.string_class, "bzero_aligned_1", 2);
3445                 g_assert (bzero_method);
3446                 iargs [0] = dest;
3447                 iargs [1] = size_ins;
3448                 mono_emit_calli (cfg, mono_method_signature (bzero_method), iargs, bzero_ins, NULL, NULL);
3449                 return;
3450         }
3451
3452         klass = mono_class_from_mono_type (mini_get_underlying_type (&klass->byval_arg));
3453
3454         n = mono_class_value_size (klass, &align);
3455
3456         if (n <= sizeof (gpointer) * 8) {
3457                 mini_emit_memset (cfg, dest->dreg, 0, n, 0, align);
3458         }
3459         else {
3460                 memset_method = get_memset_method ();
3461                 iargs [0] = dest;
3462                 EMIT_NEW_ICONST (cfg, iargs [1], 0);
3463                 EMIT_NEW_ICONST (cfg, iargs [2], n);
3464                 mono_emit_method_call (cfg, memset_method, iargs, NULL);
3465         }
3466 }
3467
3468 /*
3469  * emit_get_rgctx:
3470  *
3471  *   Emit IR to return either the this pointer for instance method,
3472  * or the mrgctx for static methods.
3473  */
3474 static MonoInst*
3475 emit_get_rgctx (MonoCompile *cfg, MonoMethod *method, int context_used)
3476 {
3477         MonoInst *this_ins = NULL;
3478
3479         g_assert (cfg->gshared);
3480
3481         if (!(method->flags & METHOD_ATTRIBUTE_STATIC) &&
3482                         !(context_used & MONO_GENERIC_CONTEXT_USED_METHOD) &&
3483                         !method->klass->valuetype)
3484                 EMIT_NEW_ARGLOAD (cfg, this_ins, 0);
3485
3486         if (context_used & MONO_GENERIC_CONTEXT_USED_METHOD) {
3487                 MonoInst *mrgctx_loc, *mrgctx_var;
3488
3489                 g_assert (!this_ins);
3490                 g_assert (method->is_inflated && mono_method_get_context (method)->method_inst);
3491
3492                 mrgctx_loc = mono_get_vtable_var (cfg);
3493                 EMIT_NEW_TEMPLOAD (cfg, mrgctx_var, mrgctx_loc->inst_c0);
3494
3495                 return mrgctx_var;
3496         } else if (method->flags & METHOD_ATTRIBUTE_STATIC || method->klass->valuetype) {
3497                 MonoInst *vtable_loc, *vtable_var;
3498
3499                 g_assert (!this_ins);
3500
3501                 vtable_loc = mono_get_vtable_var (cfg);
3502                 EMIT_NEW_TEMPLOAD (cfg, vtable_var, vtable_loc->inst_c0);
3503
3504                 if (method->is_inflated && mono_method_get_context (method)->method_inst) {
3505                         MonoInst *mrgctx_var = vtable_var;
3506                         int vtable_reg;
3507
3508                         vtable_reg = alloc_preg (cfg);
3509                         EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, MONO_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
3510                         vtable_var->type = STACK_PTR;
3511                 }
3512
3513                 return vtable_var;
3514         } else {
3515                 MonoInst *ins;
3516                 int vtable_reg;
3517
3518                 vtable_reg = alloc_preg (cfg);
3519                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this_ins->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3520                 return ins;
3521         }
3522 }
3523
3524 static MonoJumpInfoRgctxEntry *
3525 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, MonoRgctxInfoType info_type)
3526 {
3527         MonoJumpInfoRgctxEntry *res = (MonoJumpInfoRgctxEntry *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfoRgctxEntry));
3528         res->method = method;
3529         res->in_mrgctx = in_mrgctx;
3530         res->data = (MonoJumpInfo *)mono_mempool_alloc0 (mp, sizeof (MonoJumpInfo));
3531         res->data->type = patch_type;
3532         res->data->data.target = patch_data;
3533         res->info_type = info_type;
3534
3535         return res;
3536 }
3537
3538 static inline MonoInst*
3539 emit_rgctx_fetch_inline (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3540 {
3541         MonoInst *args [16];
3542         MonoInst *call;
3543
3544         // FIXME: No fastpath since the slot is not a compile time constant
3545         args [0] = rgctx;
3546         EMIT_NEW_AOTCONST (cfg, args [1], MONO_PATCH_INFO_RGCTX_SLOT_INDEX, entry);
3547         if (entry->in_mrgctx)
3548                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3549         else
3550                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3551         return call;
3552 #if 0
3553         /*
3554          * FIXME: This can be called during decompose, which is a problem since it creates
3555          * new bblocks.
3556          * Also, the fastpath doesn't work since the slot number is dynamically allocated.
3557          */
3558         int i, slot, depth, index, rgctx_reg, val_reg, res_reg;
3559         gboolean mrgctx;
3560         MonoBasicBlock *is_null_bb, *end_bb;
3561         MonoInst *res, *ins, *call;
3562         MonoInst *args[16];
3563
3564         slot = mini_get_rgctx_entry_slot (entry);
3565
3566         mrgctx = MONO_RGCTX_SLOT_IS_MRGCTX (slot);
3567         index = MONO_RGCTX_SLOT_INDEX (slot);
3568         if (mrgctx)
3569                 index += MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT / sizeof (gpointer);
3570         for (depth = 0; ; ++depth) {
3571                 int size = mono_class_rgctx_get_array_size (depth, mrgctx);
3572
3573                 if (index < size - 1)
3574                         break;
3575                 index -= size - 1;
3576         }
3577
3578         NEW_BBLOCK (cfg, end_bb);
3579         NEW_BBLOCK (cfg, is_null_bb);
3580
3581         if (mrgctx) {
3582                 rgctx_reg = rgctx->dreg;
3583         } else {
3584                 rgctx_reg = alloc_preg (cfg);
3585
3586                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, rgctx_reg, rgctx->dreg, MONO_STRUCT_OFFSET (MonoVTable, runtime_generic_context));
3587                 // FIXME: Avoid this check by allocating the table when the vtable is created etc.
3588                 NEW_BBLOCK (cfg, is_null_bb);
3589
3590                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3591                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3592         }
3593
3594         for (i = 0; i < depth; ++i) {
3595                 int array_reg = alloc_preg (cfg);
3596
3597                 /* load ptr to next array */
3598                 if (mrgctx && i == 0)
3599                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, MONO_SIZEOF_METHOD_RUNTIME_GENERIC_CONTEXT);
3600                 else
3601                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, rgctx_reg, 0);
3602                 rgctx_reg = array_reg;
3603                 /* is the ptr null? */
3604                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rgctx_reg, 0);
3605                 /* if yes, jump to actual trampoline */
3606                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3607         }
3608
3609         /* fetch slot */
3610         val_reg = alloc_preg (cfg);
3611         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, val_reg, rgctx_reg, (index + 1) * sizeof (gpointer));
3612         /* is the slot null? */
3613         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, val_reg, 0);
3614         /* if yes, jump to actual trampoline */
3615         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3616
3617         /* Fastpath */
3618         res_reg = alloc_preg (cfg);
3619         MONO_INST_NEW (cfg, ins, OP_MOVE);
3620         ins->dreg = res_reg;
3621         ins->sreg1 = val_reg;
3622         MONO_ADD_INS (cfg->cbb, ins);
3623         res = ins;
3624         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3625
3626         /* Slowpath */
3627         MONO_START_BB (cfg, is_null_bb);
3628         args [0] = rgctx;
3629         EMIT_NEW_ICONST (cfg, args [1], index);
3630         if (mrgctx)
3631                 call = mono_emit_jit_icall (cfg, mono_fill_method_rgctx, args);
3632         else
3633                 call = mono_emit_jit_icall (cfg, mono_fill_class_rgctx, args);
3634         MONO_INST_NEW (cfg, ins, OP_MOVE);
3635         ins->dreg = res_reg;
3636         ins->sreg1 = call->dreg;
3637         MONO_ADD_INS (cfg->cbb, ins);
3638         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
3639
3640         MONO_START_BB (cfg, end_bb);
3641
3642         return res;
3643 #endif
3644 }
3645
3646 /*
3647  * emit_rgctx_fetch:
3648  *
3649  *   Emit IR to load the value of the rgctx entry ENTRY from the rgctx
3650  * given by RGCTX.
3651  */
3652 static inline MonoInst*
3653 emit_rgctx_fetch (MonoCompile *cfg, MonoInst *rgctx, MonoJumpInfoRgctxEntry *entry)
3654 {
3655         if (cfg->llvm_only)
3656                 return emit_rgctx_fetch_inline (cfg, rgctx, entry);
3657         else
3658                 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
3659 }
3660
3661 static MonoInst*
3662 emit_get_rgctx_klass (MonoCompile *cfg, int context_used,
3663                                           MonoClass *klass, MonoRgctxInfoType rgctx_type)
3664 {
3665         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);
3666         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3667
3668         return emit_rgctx_fetch (cfg, rgctx, entry);
3669 }
3670
3671 static MonoInst*
3672 emit_get_rgctx_sig (MonoCompile *cfg, int context_used,
3673                                         MonoMethodSignature *sig, MonoRgctxInfoType rgctx_type)
3674 {
3675         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);
3676         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3677
3678         return emit_rgctx_fetch (cfg, rgctx, entry);
3679 }
3680
3681 static MonoInst*
3682 emit_get_rgctx_gsharedvt_call (MonoCompile *cfg, int context_used,
3683                                                            MonoMethodSignature *sig, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3684 {
3685         MonoJumpInfoGSharedVtCall *call_info;
3686         MonoJumpInfoRgctxEntry *entry;
3687         MonoInst *rgctx;
3688
3689         call_info = (MonoJumpInfoGSharedVtCall *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoGSharedVtCall));
3690         call_info->sig = sig;
3691         call_info->method = cmethod;
3692
3693         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);
3694         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3695
3696         return emit_rgctx_fetch (cfg, rgctx, entry);
3697 }
3698
3699 /*
3700  * emit_get_rgctx_virt_method:
3701  *
3702  *   Return data for method VIRT_METHOD for a receiver of type KLASS.
3703  */
3704 static MonoInst*
3705 emit_get_rgctx_virt_method (MonoCompile *cfg, int context_used,
3706                                                         MonoClass *klass, MonoMethod *virt_method, MonoRgctxInfoType rgctx_type)
3707 {
3708         MonoJumpInfoVirtMethod *info;
3709         MonoJumpInfoRgctxEntry *entry;
3710         MonoInst *rgctx;
3711
3712         info = (MonoJumpInfoVirtMethod *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoVirtMethod));
3713         info->klass = klass;
3714         info->method = virt_method;
3715
3716         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);
3717         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3718
3719         return emit_rgctx_fetch (cfg, rgctx, entry);
3720 }
3721
3722 static MonoInst*
3723 emit_get_rgctx_gsharedvt_method (MonoCompile *cfg, int context_used,
3724                                                                  MonoMethod *cmethod, MonoGSharedVtMethodInfo *info)
3725 {
3726         MonoJumpInfoRgctxEntry *entry;
3727         MonoInst *rgctx;
3728
3729         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);
3730         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3731
3732         return emit_rgctx_fetch (cfg, rgctx, entry);
3733 }
3734
3735 /*
3736  * emit_get_rgctx_method:
3737  *
3738  *   Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
3739  * normal constants, else emit a load from the rgctx.
3740  */
3741 static MonoInst*
3742 emit_get_rgctx_method (MonoCompile *cfg, int context_used,
3743                                            MonoMethod *cmethod, MonoRgctxInfoType rgctx_type)
3744 {
3745         if (!context_used) {
3746                 MonoInst *ins;
3747
3748                 switch (rgctx_type) {
3749                 case MONO_RGCTX_INFO_METHOD:
3750                         EMIT_NEW_METHODCONST (cfg, ins, cmethod);
3751                         return ins;
3752                 case MONO_RGCTX_INFO_METHOD_RGCTX:
3753                         EMIT_NEW_METHOD_RGCTX_CONST (cfg, ins, cmethod);
3754                         return ins;
3755                 default:
3756                         g_assert_not_reached ();
3757                 }
3758         } else {
3759                 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);
3760                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3761
3762                 return emit_rgctx_fetch (cfg, rgctx, entry);
3763         }
3764 }
3765
3766 static MonoInst*
3767 emit_get_rgctx_field (MonoCompile *cfg, int context_used,
3768                                           MonoClassField *field, MonoRgctxInfoType rgctx_type)
3769 {
3770         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);
3771         MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
3772
3773         return emit_rgctx_fetch (cfg, rgctx, entry);
3774 }
3775
3776 static int
3777 get_gsharedvt_info_slot (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3778 {
3779         MonoGSharedVtMethodInfo *info = cfg->gsharedvt_info;
3780         MonoRuntimeGenericContextInfoTemplate *template_;
3781         int i, idx;
3782
3783         g_assert (info);
3784
3785         for (i = 0; i < info->num_entries; ++i) {
3786                 MonoRuntimeGenericContextInfoTemplate *otemplate = &info->entries [i];
3787
3788                 if (otemplate->info_type == rgctx_type && otemplate->data == data && rgctx_type != MONO_RGCTX_INFO_LOCAL_OFFSET)
3789                         return i;
3790         }
3791
3792         if (info->num_entries == info->count_entries) {
3793                 MonoRuntimeGenericContextInfoTemplate *new_entries;
3794                 int new_count_entries = info->count_entries ? info->count_entries * 2 : 16;
3795
3796                 new_entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * new_count_entries);
3797
3798                 memcpy (new_entries, info->entries, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
3799                 info->entries = new_entries;
3800                 info->count_entries = new_count_entries;
3801         }
3802
3803         idx = info->num_entries;
3804         template_ = &info->entries [idx];
3805         template_->info_type = rgctx_type;
3806         template_->data = data;
3807
3808         info->num_entries ++;
3809
3810         return idx;
3811 }
3812
3813 /*
3814  * emit_get_gsharedvt_info:
3815  *
3816  *   This is similar to emit_get_rgctx_.., but loads the data from the gsharedvt info var instead of calling an rgctx fetch trampoline.
3817  */
3818 static MonoInst*
3819 emit_get_gsharedvt_info (MonoCompile *cfg, gpointer data, MonoRgctxInfoType rgctx_type)
3820 {
3821         MonoInst *ins;
3822         int idx, dreg;
3823
3824         idx = get_gsharedvt_info_slot (cfg, data, rgctx_type);
3825         /* Load info->entries [idx] */
3826         dreg = alloc_preg (cfg);
3827         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, cfg->gsharedvt_info_var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
3828
3829         return ins;
3830 }
3831
3832 static MonoInst*
3833 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type)
3834 {
3835         return emit_get_gsharedvt_info (cfg, &klass->byval_arg, rgctx_type);
3836 }
3837
3838 /*
3839  * On return the caller must check @klass for load errors.
3840  */
3841 static void
3842 emit_class_init (MonoCompile *cfg, MonoClass *klass)
3843 {
3844         MonoInst *vtable_arg;
3845         int context_used;
3846
3847         context_used = mini_class_check_context_used (cfg, klass);
3848
3849         if (context_used) {
3850                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
3851                                                                                    klass, MONO_RGCTX_INFO_VTABLE);
3852         } else {
3853                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3854
3855                 if (!vtable)
3856                         return;
3857                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
3858         }
3859
3860         if (!COMPILE_LLVM (cfg) && cfg->backend->have_op_generic_class_init) {
3861                 MonoInst *ins;
3862
3863                 /*
3864                  * Using an opcode instead of emitting IR here allows the hiding of the call inside the opcode,
3865                  * so this doesn't have to clobber any regs and it doesn't break basic blocks.
3866                  */
3867                 MONO_INST_NEW (cfg, ins, OP_GENERIC_CLASS_INIT);
3868                 ins->sreg1 = vtable_arg->dreg;
3869                 MONO_ADD_INS (cfg->cbb, ins);
3870         } else {
3871                 static int byte_offset = -1;
3872                 static guint8 bitmask;
3873                 int bits_reg, inited_reg;
3874                 MonoBasicBlock *inited_bb;
3875                 MonoInst *args [16];
3876
3877                 if (byte_offset < 0)
3878                         mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
3879
3880                 bits_reg = alloc_ireg (cfg);
3881                 inited_reg = alloc_ireg (cfg);
3882
3883                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, bits_reg, vtable_arg->dreg, byte_offset);
3884                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, inited_reg, bits_reg, bitmask);
3885
3886                 NEW_BBLOCK (cfg, inited_bb);
3887
3888                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, inited_reg, 0);
3889                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, inited_bb);
3890
3891                 args [0] = vtable_arg;
3892                 mono_emit_jit_icall (cfg, mono_generic_class_init, args);
3893
3894                 MONO_START_BB (cfg, inited_bb);
3895         }
3896 }
3897
3898 static void
3899 emit_seq_point (MonoCompile *cfg, MonoMethod *method, guint8* ip, gboolean intr_loc, gboolean nonempty_stack)
3900 {
3901         MonoInst *ins;
3902
3903         if (cfg->gen_seq_points && cfg->method == method) {
3904                 NEW_SEQ_POINT (cfg, ins, ip - cfg->header->code, intr_loc);
3905                 if (nonempty_stack)
3906                         ins->flags |= MONO_INST_NONEMPTY_STACK;
3907                 MONO_ADD_INS (cfg->cbb, ins);
3908         }
3909 }
3910
3911 static void
3912 save_cast_details (MonoCompile *cfg, MonoClass *klass, int obj_reg, gboolean null_check)
3913 {
3914         if (mini_get_debug_options ()->better_cast_details) {
3915                 int vtable_reg = alloc_preg (cfg);
3916                 int klass_reg = alloc_preg (cfg);
3917                 MonoBasicBlock *is_null_bb = NULL;
3918                 MonoInst *tls_get;
3919                 int to_klass_reg, context_used;
3920
3921                 if (null_check) {
3922                         NEW_BBLOCK (cfg, is_null_bb);
3923
3924                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
3925                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
3926                 }
3927
3928                 tls_get = mono_get_jit_tls_intrinsic (cfg);
3929                 if (!tls_get) {
3930                         fprintf (stderr, "error: --debug=casts not supported on this platform.\n.");
3931                         exit (1);
3932                 }
3933
3934                 MONO_ADD_INS (cfg->cbb, tls_get);
3935                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3936                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3937
3938                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3939
3940                 context_used = mini_class_check_context_used (cfg, klass);
3941                 if (context_used) {
3942                         MonoInst *class_ins;
3943
3944                         class_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
3945                         to_klass_reg = class_ins->dreg;
3946                 } else {
3947                         to_klass_reg = alloc_preg (cfg);
3948                         MONO_EMIT_NEW_CLASSCONST (cfg, to_klass_reg, klass);
3949                 }
3950                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3951
3952                 if (null_check)
3953                         MONO_START_BB (cfg, is_null_bb);
3954         }
3955 }
3956
3957 static void
3958 reset_cast_details (MonoCompile *cfg)
3959 {
3960         /* Reset the variables holding the cast details */
3961         if (mini_get_debug_options ()->better_cast_details) {
3962                 MonoInst *tls_get = mono_get_jit_tls_intrinsic (cfg);
3963
3964                 MONO_ADD_INS (cfg->cbb, tls_get);
3965                 /* It is enough to reset the from field */
3966                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3967         }
3968 }
3969
3970 /*
3971  * On return the caller must check @array_class for load errors
3972  */
3973 static void
3974 mini_emit_check_array_type (MonoCompile *cfg, MonoInst *obj, MonoClass *array_class)
3975 {
3976         int vtable_reg = alloc_preg (cfg);
3977         int context_used;
3978
3979         context_used = mini_class_check_context_used (cfg, array_class);
3980
3981         save_cast_details (cfg, array_class, obj->dreg, FALSE);
3982
3983         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
3984
3985         if (cfg->opt & MONO_OPT_SHARED) {
3986                 int class_reg = alloc_preg (cfg);
3987                 MonoInst *ins;
3988
3989                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, class_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
3990                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, array_class);
3991                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, class_reg, ins->dreg);
3992         } else if (context_used) {
3993                 MonoInst *vtable_ins;
3994
3995                 vtable_ins = emit_get_rgctx_klass (cfg, context_used, array_class, MONO_RGCTX_INFO_VTABLE);
3996                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vtable_ins->dreg);
3997         } else {
3998                 if (cfg->compile_aot) {
3999                         int vt_reg;
4000                         MonoVTable *vtable;
4001
4002                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4003                                 return;
4004                         vt_reg = alloc_preg (cfg);
4005                         MONO_EMIT_NEW_VTABLECONST (cfg, vt_reg, vtable);
4006                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, vtable_reg, vt_reg);
4007                 } else {
4008                         MonoVTable *vtable;
4009                         if (!(vtable = mono_class_vtable (cfg->domain, array_class)))
4010                                 return;
4011                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vtable);
4012                 }
4013         }
4014
4015         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ArrayTypeMismatchException");
4016
4017         reset_cast_details (cfg);
4018 }
4019
4020 /**
4021  * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
4022  * generic code is generated.
4023  */
4024 static MonoInst*
4025 handle_unbox_nullable (MonoCompile* cfg, MonoInst* val, MonoClass* klass, int context_used)
4026 {
4027         MonoMethod* method = mono_class_get_method_from_name (klass, "Unbox", 1);
4028
4029         if (context_used) {
4030                 MonoInst *rgctx, *addr;
4031
4032                 /* FIXME: What if the class is shared?  We might not
4033                    have to get the address of the method from the
4034                    RGCTX. */
4035                 addr = emit_get_rgctx_method (cfg, context_used, method,
4036                                                                           MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4037                 if (cfg->llvm_only && cfg->gsharedvt) {
4038                         return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4039                 } else {
4040                         rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4041
4042                         return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4043                 }
4044         } else {
4045                 gboolean pass_vtable, pass_mrgctx;
4046                 MonoInst *rgctx_arg = NULL;
4047
4048                 check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4049                 g_assert (!pass_mrgctx);
4050
4051                 if (pass_vtable) {
4052                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4053
4054                         g_assert (vtable);
4055                         EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4056                 }
4057
4058                 return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4059         }
4060 }
4061
4062 static MonoInst*
4063 handle_unbox (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, int context_used)
4064 {
4065         MonoInst *add;
4066         int obj_reg;
4067         int vtable_reg = alloc_dreg (cfg ,STACK_PTR);
4068         int klass_reg = alloc_dreg (cfg ,STACK_PTR);
4069         int eclass_reg = alloc_dreg (cfg ,STACK_PTR);
4070         int rank_reg = alloc_dreg (cfg ,STACK_I4);
4071
4072         obj_reg = sp [0]->dreg;
4073         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4074         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4075
4076         /* FIXME: generics */
4077         g_assert (klass->rank == 0);
4078
4079         // Check rank == 0
4080         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, 0);
4081         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4082
4083         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4084         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, element_class));
4085
4086         if (context_used) {
4087                 MonoInst *element_class;
4088
4089                 /* This assertion is from the unboxcast insn */
4090                 g_assert (klass->rank == 0);
4091
4092                 element_class = emit_get_rgctx_klass (cfg, context_used,
4093                                 klass, MONO_RGCTX_INFO_ELEMENT_KLASS);
4094
4095                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, eclass_reg, element_class->dreg);
4096                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4097         } else {
4098                 save_cast_details (cfg, klass->element_class, obj_reg, FALSE);
4099                 mini_emit_class_check (cfg, eclass_reg, klass->element_class);
4100                 reset_cast_details (cfg);
4101         }
4102
4103         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
4104         MONO_ADD_INS (cfg->cbb, add);
4105         add->type = STACK_MP;
4106         add->klass = klass;
4107
4108         return add;
4109 }
4110
4111 static MonoInst*
4112 handle_unbox_gsharedvt (MonoCompile *cfg, MonoClass *klass, MonoInst *obj)
4113 {
4114         MonoInst *addr, *klass_inst, *is_ref, *args[16];
4115         MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4116         MonoInst *ins;
4117         int dreg, addr_reg;
4118
4119         klass_inst = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_KLASS);
4120
4121         /* obj */
4122         args [0] = obj;
4123
4124         /* klass */
4125         args [1] = klass_inst;
4126
4127         /* CASTCLASS */
4128         obj = mono_emit_jit_icall (cfg, mono_object_castclass_unbox, args);
4129
4130         NEW_BBLOCK (cfg, is_ref_bb);
4131         NEW_BBLOCK (cfg, is_nullable_bb);
4132         NEW_BBLOCK (cfg, end_bb);
4133         is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4134         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4135         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4136
4137         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4138         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4139
4140         /* This will contain either the address of the unboxed vtype, or an address of the temporary where the ref is stored */
4141         addr_reg = alloc_dreg (cfg, STACK_MP);
4142
4143         /* Non-ref case */
4144         /* UNBOX */
4145         NEW_BIALU_IMM (cfg, addr, OP_ADD_IMM, addr_reg, obj->dreg, sizeof (MonoObject));
4146         MONO_ADD_INS (cfg->cbb, addr);
4147
4148         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4149
4150         /* Ref case */
4151         MONO_START_BB (cfg, is_ref_bb);
4152
4153         /* Save the ref to a temporary */
4154         dreg = alloc_ireg (cfg);
4155         EMIT_NEW_VARLOADA_VREG (cfg, addr, dreg, &klass->byval_arg);
4156         addr->dreg = addr_reg;
4157         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, obj->dreg);
4158         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4159
4160         /* Nullable case */
4161         MONO_START_BB (cfg, is_nullable_bb);
4162
4163         {
4164                 MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_NULLABLE_CLASS_UNBOX);
4165                 MonoInst *unbox_call;
4166                 MonoMethodSignature *unbox_sig;
4167
4168                 unbox_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4169                 unbox_sig->ret = &klass->byval_arg;
4170                 unbox_sig->param_count = 1;
4171                 unbox_sig->params [0] = &mono_defaults.object_class->byval_arg;
4172
4173                 if (cfg->llvm_only)
4174                         unbox_call = emit_llvmonly_calli (cfg, unbox_sig, &obj, addr);
4175                 else
4176                         unbox_call = mono_emit_calli (cfg, unbox_sig, &obj, addr, NULL, NULL);
4177
4178                 EMIT_NEW_VARLOADA_VREG (cfg, addr, unbox_call->dreg, &klass->byval_arg);
4179                 addr->dreg = addr_reg;
4180         }
4181
4182         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4183
4184         /* End */
4185         MONO_START_BB (cfg, end_bb);
4186
4187         /* LDOBJ */
4188         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr_reg, 0);
4189
4190         return ins;
4191 }
4192
4193 /*
4194  * Returns NULL and set the cfg exception on error.
4195  */
4196 static MonoInst*
4197 handle_alloc (MonoCompile *cfg, MonoClass *klass, gboolean for_box, int context_used)
4198 {
4199         MonoInst *iargs [2];
4200         void *alloc_ftn;
4201
4202         if (context_used) {
4203                 MonoInst *data;
4204                 MonoRgctxInfoType rgctx_info;
4205                 MonoInst *iargs [2];
4206                 gboolean known_instance_size = !mini_is_gsharedvt_klass (klass);
4207
4208                 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (klass, for_box, known_instance_size);
4209
4210                 if (cfg->opt & MONO_OPT_SHARED)
4211                         rgctx_info = MONO_RGCTX_INFO_KLASS;
4212                 else
4213                         rgctx_info = MONO_RGCTX_INFO_VTABLE;
4214                 data = emit_get_rgctx_klass (cfg, context_used, klass, rgctx_info);
4215
4216                 if (cfg->opt & MONO_OPT_SHARED) {
4217                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4218                         iargs [1] = data;
4219                         alloc_ftn = ves_icall_object_new;
4220                 } else {
4221                         iargs [0] = data;
4222                         alloc_ftn = ves_icall_object_new_specific;
4223                 }
4224
4225                 if (managed_alloc && !(cfg->opt & MONO_OPT_SHARED)) {
4226                         if (known_instance_size) {
4227                                 int size = mono_class_instance_size (klass);
4228                                 if (size < sizeof (MonoObject))
4229                                         g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4230
4231                                 EMIT_NEW_ICONST (cfg, iargs [1], size);
4232                         }
4233                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4234                 }
4235
4236                 return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4237         }
4238
4239         if (cfg->opt & MONO_OPT_SHARED) {
4240                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
4241                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
4242
4243                 alloc_ftn = ves_icall_object_new;
4244         } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
4245                 /* This happens often in argument checking code, eg. throw new FooException... */
4246                 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
4247                 EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (klass->type_token));
4248                 return mono_emit_jit_icall (cfg, mono_helper_newobj_mscorlib, iargs);
4249         } else {
4250                 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
4251                 MonoMethod *managed_alloc = NULL;
4252                 gboolean pass_lw;
4253
4254                 if (!vtable) {
4255                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4256                         cfg->exception_ptr = klass;
4257                         return NULL;
4258                 }
4259
4260                 managed_alloc = mono_gc_get_managed_allocator (klass, for_box, TRUE);
4261
4262                 if (managed_alloc) {
4263                         int size = mono_class_instance_size (klass);
4264                         if (size < sizeof (MonoObject))
4265                                 g_error ("Invalid size %d for class %s", size, mono_type_get_full_name (klass));
4266
4267                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4268                         EMIT_NEW_ICONST (cfg, iargs [1], size);
4269                         return mono_emit_method_call (cfg, managed_alloc, iargs, NULL);
4270                 }
4271                 alloc_ftn = mono_class_get_allocation_ftn (vtable, for_box, &pass_lw);
4272                 if (pass_lw) {
4273                         guint32 lw = vtable->klass->instance_size;
4274                         lw = ((lw + (sizeof (gpointer) - 1)) & ~(sizeof (gpointer) - 1)) / sizeof (gpointer);
4275                         EMIT_NEW_ICONST (cfg, iargs [0], lw);
4276                         EMIT_NEW_VTABLECONST (cfg, iargs [1], vtable);
4277                 }
4278                 else {
4279                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
4280                 }
4281         }
4282
4283         return mono_emit_jit_icall (cfg, alloc_ftn, iargs);
4284 }
4285
4286 /*
4287  * Returns NULL and set the cfg exception on error.
4288  */
4289 static MonoInst*
4290 handle_box (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used)
4291 {
4292         MonoInst *alloc, *ins;
4293
4294         if (mono_class_is_nullable (klass)) {
4295                 MonoMethod* method = mono_class_get_method_from_name (klass, "Box", 1);
4296
4297                 if (context_used) {
4298                         if (cfg->llvm_only && cfg->gsharedvt) {
4299                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4300                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4301                                 return emit_llvmonly_calli (cfg, mono_method_signature (method), &val, addr);
4302                         } else {
4303                                 /* FIXME: What if the class is shared?  We might not
4304                                    have to get the method address from the RGCTX. */
4305                                 MonoInst *addr = emit_get_rgctx_method (cfg, context_used, method,
4306                                                                                                                 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
4307                                 MonoInst *rgctx = emit_get_rgctx (cfg, cfg->current_method, context_used);
4308
4309                                 return mono_emit_calli (cfg, mono_method_signature (method), &val, addr, NULL, rgctx);
4310                         }
4311                 } else {
4312                         gboolean pass_vtable, pass_mrgctx;
4313                         MonoInst *rgctx_arg = NULL;
4314
4315                         check_method_sharing (cfg, method, &pass_vtable, &pass_mrgctx);
4316                         g_assert (!pass_mrgctx);
4317
4318                         if (pass_vtable) {
4319                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
4320
4321                                 g_assert (vtable);
4322                                 EMIT_NEW_VTABLECONST (cfg, rgctx_arg, vtable);
4323                         }
4324
4325                         return mono_emit_method_call_full (cfg, method, NULL, FALSE, &val, NULL, NULL, rgctx_arg);
4326                 }
4327         }
4328
4329         if (mini_is_gsharedvt_klass (klass)) {
4330                 MonoBasicBlock *is_ref_bb, *is_nullable_bb, *end_bb;
4331                 MonoInst *res, *is_ref, *src_var, *addr;
4332                 int dreg;
4333
4334                 dreg = alloc_ireg (cfg);
4335
4336                 NEW_BBLOCK (cfg, is_ref_bb);
4337                 NEW_BBLOCK (cfg, is_nullable_bb);
4338                 NEW_BBLOCK (cfg, end_bb);
4339                 is_ref = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_CLASS_BOX_TYPE);
4340                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
4341                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
4342
4343                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, is_ref->dreg, MONO_GSHAREDVT_BOX_TYPE_NULLABLE);
4344                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_nullable_bb);
4345
4346                 /* Non-ref case */
4347                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4348                 if (!alloc)
4349                         return NULL;
4350                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4351                 ins->opcode = OP_STOREV_MEMBASE;
4352
4353                 EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, alloc->dreg);
4354                 res->type = STACK_OBJ;
4355                 res->klass = klass;
4356                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4357
4358                 /* Ref case */
4359                 MONO_START_BB (cfg, is_ref_bb);
4360
4361                 /* val is a vtype, so has to load the value manually */
4362                 src_var = get_vreg_to_inst (cfg, val->dreg);
4363                 if (!src_var)
4364                         src_var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, val->dreg);
4365                 EMIT_NEW_VARLOADA (cfg, addr, src_var, src_var->inst_vtype);
4366                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, addr->dreg, 0);
4367                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4368
4369                 /* Nullable case */
4370                 MONO_START_BB (cfg, is_nullable_bb);
4371
4372                 {
4373                         MonoInst *addr = emit_get_gsharedvt_info_klass (cfg, klass,
4374                                                                                                         MONO_RGCTX_INFO_NULLABLE_CLASS_BOX);
4375                         MonoInst *box_call;
4376                         MonoMethodSignature *box_sig;
4377
4378                         /*
4379                          * klass is Nullable<T>, need to call Nullable<T>.Box () using a gsharedvt signature, but we cannot
4380                          * construct that method at JIT time, so have to do things by hand.
4381                          */
4382                         box_sig = (MonoMethodSignature *)mono_mempool_alloc0 (cfg->mempool, MONO_SIZEOF_METHOD_SIGNATURE + (1 * sizeof (MonoType *)));
4383                         box_sig->ret = &mono_defaults.object_class->byval_arg;
4384                         box_sig->param_count = 1;
4385                         box_sig->params [0] = &klass->byval_arg;
4386
4387                         if (cfg->llvm_only)
4388                                 box_call = emit_llvmonly_calli (cfg, box_sig, &val, addr);
4389                         else
4390                                 box_call = mono_emit_calli (cfg, box_sig, &val, addr, NULL, NULL);
4391                         EMIT_NEW_UNALU (cfg, res, OP_MOVE, dreg, box_call->dreg);
4392                         res->type = STACK_OBJ;
4393                         res->klass = klass;
4394                 }
4395
4396                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4397
4398                 MONO_START_BB (cfg, end_bb);
4399
4400                 return res;
4401         } else {
4402                 alloc = handle_alloc (cfg, klass, TRUE, context_used);
4403                 if (!alloc)
4404                         return NULL;
4405
4406                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
4407                 return alloc;
4408         }
4409 }
4410
4411 static gboolean
4412 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
4413 {
4414         int i;
4415         MonoGenericContainer *container;
4416         MonoGenericInst *ginst;
4417
4418         if (klass->generic_class) {
4419                 container = klass->generic_class->container_class->generic_container;
4420                 ginst = klass->generic_class->context.class_inst;
4421         } else if (klass->generic_container && context_used) {
4422                 container = klass->generic_container;
4423                 ginst = container->context.class_inst;
4424         } else {
4425                 return FALSE;
4426         }
4427
4428         for (i = 0; i < container->type_argc; ++i) {
4429                 MonoType *type;
4430                 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
4431                         continue;
4432                 type = ginst->type_argv [i];
4433                 if (mini_type_is_reference (type))
4434                         return TRUE;
4435         }
4436         return FALSE;
4437 }
4438
4439 static GHashTable* direct_icall_type_hash;
4440
4441 static gboolean
4442 icall_is_direct_callable (MonoCompile *cfg, MonoMethod *cmethod)
4443 {
4444         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
4445         if (!direct_icalls_enabled (cfg))
4446                 return FALSE;
4447
4448         /*
4449          * An icall is directly callable if it doesn't directly or indirectly call mono_raise_exception ().
4450          * Whitelist a few icalls for now.
4451          */
4452         if (!direct_icall_type_hash) {
4453                 GHashTable *h = g_hash_table_new (g_str_hash, g_str_equal);
4454
4455                 g_hash_table_insert (h, (char*)"Decimal", GUINT_TO_POINTER (1));
4456                 g_hash_table_insert (h, (char*)"Number", GUINT_TO_POINTER (1));
4457                 g_hash_table_insert (h, (char*)"Buffer", GUINT_TO_POINTER (1));
4458                 g_hash_table_insert (h, (char*)"Monitor", GUINT_TO_POINTER (1));
4459                 mono_memory_barrier ();
4460                 direct_icall_type_hash = h;
4461         }
4462
4463         if (cmethod->klass == mono_defaults.math_class)
4464                 return TRUE;
4465         /* No locking needed */
4466         if (cmethod->klass->image == mono_defaults.corlib && g_hash_table_lookup (direct_icall_type_hash, cmethod->klass->name))
4467                 return TRUE;
4468         return FALSE;
4469 }
4470
4471 #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)
4472
4473 static MonoInst*
4474 emit_isinst_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4475 {
4476         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4477         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4478 }
4479
4480 static MonoInst*
4481 emit_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4482 {
4483         MonoMethod *mono_castclass = mono_marshal_get_castclass_with_cache ();
4484         MonoInst *res;
4485
4486         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4487         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4488         reset_cast_details (cfg);
4489
4490         return res;
4491 }
4492
4493 static int
4494 get_castclass_cache_idx (MonoCompile *cfg)
4495 {
4496         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4497         cfg->castclass_cache_index ++;
4498         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4499 }
4500
4501
4502 static MonoInst*
4503 emit_isinst_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4504 {
4505         MonoInst *args [3];
4506         int idx;
4507
4508         args [0] = obj; /* obj */
4509         EMIT_NEW_CLASSCONST (cfg, args [1], klass); /* klass */
4510
4511         idx = get_castclass_cache_idx (cfg); /* inline cache*/
4512         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4513
4514         return emit_isinst_with_cache (cfg, klass, args);
4515 }
4516
4517 static MonoInst*
4518 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4519 {
4520         MonoInst *args [3];
4521         int idx;
4522
4523         /* obj */
4524         args [0] = obj;
4525
4526         /* klass */
4527         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4528
4529         /* inline cache*/
4530         idx = get_castclass_cache_idx (cfg);
4531         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4532
4533         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4534         return emit_castclass_with_cache (cfg, klass, args);
4535 }
4536
4537 /*
4538  * Returns NULL and set the cfg exception on error.
4539  */
4540 static MonoInst*
4541 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4542 {
4543         MonoBasicBlock *is_null_bb;
4544         int obj_reg = src->dreg;
4545         int vtable_reg = alloc_preg (cfg);
4546         MonoInst *klass_inst = NULL;
4547
4548         if (src->opcode == OP_PCONST && src->inst_p0 == 0)
4549                 return src;
4550
4551         if (context_used) {
4552                 MonoInst *args [3];
4553
4554                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4555                         MonoInst *cache_ins;
4556
4557                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4558
4559                         /* obj */
4560                         args [0] = src;
4561
4562                         /* klass - it's the second element of the cache entry*/
4563                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4564
4565                         /* cache */
4566                         args [2] = cache_ins;
4567
4568                         return emit_castclass_with_cache (cfg, klass, args);
4569                 }
4570
4571                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4572         }
4573
4574         NEW_BBLOCK (cfg, is_null_bb);
4575
4576         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4577         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4578
4579         save_cast_details (cfg, klass, obj_reg, FALSE);
4580
4581         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4582                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4583                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4584         } else {
4585                 int klass_reg = alloc_preg (cfg);
4586
4587                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4588
4589                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4590                         /* the remoting code is broken, access the class for now */
4591                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4592                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4593                                 if (!vt) {
4594                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4595                                         cfg->exception_ptr = klass;
4596                                         return NULL;
4597                                 }
4598                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4599                         } else {
4600                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4601                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4602                         }
4603                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4604                 } else {
4605                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4606                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4607                 }
4608         }
4609
4610         MONO_START_BB (cfg, is_null_bb);
4611
4612         reset_cast_details (cfg);
4613
4614         return src;
4615 }
4616
4617 /*
4618  * Returns NULL and set the cfg exception on error.
4619  */
4620 static MonoInst*
4621 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4622 {
4623         MonoInst *ins;
4624         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4625         int obj_reg = src->dreg;
4626         int vtable_reg = alloc_preg (cfg);
4627         int res_reg = alloc_ireg_ref (cfg);
4628         MonoInst *klass_inst = NULL;
4629
4630         if (context_used) {
4631                 MonoInst *args [3];
4632
4633                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4634                         MonoInst *cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4635
4636                         args [0] = src; /* obj */
4637
4638                         /* klass - it's the second element of the cache entry*/
4639                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4640
4641                         args [2] = cache_ins; /* cache */
4642                         return emit_isinst_with_cache (cfg, klass, args);
4643                 }
4644
4645                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4646         }
4647
4648         NEW_BBLOCK (cfg, is_null_bb);
4649         NEW_BBLOCK (cfg, false_bb);
4650         NEW_BBLOCK (cfg, end_bb);
4651
4652         /* Do the assignment at the beginning, so the other assignment can be if converted */
4653         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4654         ins->type = STACK_OBJ;
4655         ins->klass = klass;
4656
4657         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4658         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4659
4660         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4661
4662         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4663                 g_assert (!context_used);
4664                 /* the is_null_bb target simply copies the input register to the output */
4665                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4666         } else {
4667                 int klass_reg = alloc_preg (cfg);
4668
4669                 if (klass->rank) {
4670                         int rank_reg = alloc_preg (cfg);
4671                         int eclass_reg = alloc_preg (cfg);
4672
4673                         g_assert (!context_used);
4674                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4675                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4676                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4677                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4678                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4679                         if (klass->cast_class == mono_defaults.object_class) {
4680                                 int parent_reg = alloc_preg (cfg);
4681                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4682                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4683                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4684                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4685                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4686                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4687                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4688                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4689                         } else if (klass->cast_class == mono_defaults.enum_class) {
4690                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4691                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4692                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4693                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4694                         } else {
4695                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4696                                         /* Check that the object is a vector too */
4697                                         int bounds_reg = alloc_preg (cfg);
4698                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4699                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4700                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4701                                 }
4702
4703                                 /* the is_null_bb target simply copies the input register to the output */
4704                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4705                         }
4706                 } else if (mono_class_is_nullable (klass)) {
4707                         g_assert (!context_used);
4708                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4709                         /* the is_null_bb target simply copies the input register to the output */
4710                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4711                 } else {
4712                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4713                                 g_assert (!context_used);
4714                                 /* the remoting code is broken, access the class for now */
4715                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4716                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4717                                         if (!vt) {
4718                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4719                                                 cfg->exception_ptr = klass;
4720                                                 return NULL;
4721                                         }
4722                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4723                                 } else {
4724                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4725                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4726                                 }
4727                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4728                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4729                         } else {
4730                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4731                                 /* the is_null_bb target simply copies the input register to the output */
4732                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4733                         }
4734                 }
4735         }
4736
4737         MONO_START_BB (cfg, false_bb);
4738
4739         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4740         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4741
4742         MONO_START_BB (cfg, is_null_bb);
4743
4744         MONO_START_BB (cfg, end_bb);
4745
4746         return ins;
4747 }
4748
4749 static MonoInst*
4750 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4751 {
4752         /* This opcode takes as input an object reference and a class, and returns:
4753         0) if the object is an instance of the class,
4754         1) if the object is not instance of the class,
4755         2) if the object is a proxy whose type cannot be determined */
4756
4757         MonoInst *ins;
4758 #ifndef DISABLE_REMOTING
4759         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4760 #else
4761         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4762 #endif
4763         int obj_reg = src->dreg;
4764         int dreg = alloc_ireg (cfg);
4765         int tmp_reg;
4766 #ifndef DISABLE_REMOTING
4767         int klass_reg = alloc_preg (cfg);
4768 #endif
4769
4770         NEW_BBLOCK (cfg, true_bb);
4771         NEW_BBLOCK (cfg, false_bb);
4772         NEW_BBLOCK (cfg, end_bb);
4773 #ifndef DISABLE_REMOTING
4774         NEW_BBLOCK (cfg, false2_bb);
4775         NEW_BBLOCK (cfg, no_proxy_bb);
4776 #endif
4777
4778         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4779         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4780
4781         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4782 #ifndef DISABLE_REMOTING
4783                 NEW_BBLOCK (cfg, interface_fail_bb);
4784 #endif
4785
4786                 tmp_reg = alloc_preg (cfg);
4787                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4788 #ifndef DISABLE_REMOTING
4789                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4790                 MONO_START_BB (cfg, interface_fail_bb);
4791                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4792
4793                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4794
4795                 tmp_reg = alloc_preg (cfg);
4796                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4797                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4798                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4799 #else
4800                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4801 #endif
4802         } else {
4803 #ifndef DISABLE_REMOTING
4804                 tmp_reg = alloc_preg (cfg);
4805                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4806                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4807
4808                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4809                 tmp_reg = alloc_preg (cfg);
4810                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4811                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4812
4813                 tmp_reg = alloc_preg (cfg);
4814                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4815                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4816                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4817
4818                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4819                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4820
4821                 MONO_START_BB (cfg, no_proxy_bb);
4822
4823                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4824 #else
4825                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4826 #endif
4827         }
4828
4829         MONO_START_BB (cfg, false_bb);
4830
4831         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4832         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4833
4834 #ifndef DISABLE_REMOTING
4835         MONO_START_BB (cfg, false2_bb);
4836
4837         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4838         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4839 #endif
4840
4841         MONO_START_BB (cfg, true_bb);
4842
4843         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4844
4845         MONO_START_BB (cfg, end_bb);
4846
4847         /* FIXME: */
4848         MONO_INST_NEW (cfg, ins, OP_ICONST);
4849         ins->dreg = dreg;
4850         ins->type = STACK_I4;
4851
4852         return ins;
4853 }
4854
4855 static MonoInst*
4856 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4857 {
4858         /* This opcode takes as input an object reference and a class, and returns:
4859         0) if the object is an instance of the class,
4860         1) if the object is a proxy whose type cannot be determined
4861         an InvalidCastException exception is thrown otherwhise*/
4862
4863         MonoInst *ins;
4864 #ifndef DISABLE_REMOTING
4865         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4866 #else
4867         MonoBasicBlock *ok_result_bb;
4868 #endif
4869         int obj_reg = src->dreg;
4870         int dreg = alloc_ireg (cfg);
4871         int tmp_reg = alloc_preg (cfg);
4872
4873 #ifndef DISABLE_REMOTING
4874         int klass_reg = alloc_preg (cfg);
4875         NEW_BBLOCK (cfg, end_bb);
4876 #endif
4877
4878         NEW_BBLOCK (cfg, ok_result_bb);
4879
4880         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4881         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4882
4883         save_cast_details (cfg, klass, obj_reg, FALSE);
4884
4885         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4886 #ifndef DISABLE_REMOTING
4887                 NEW_BBLOCK (cfg, interface_fail_bb);
4888
4889                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4890                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4891                 MONO_START_BB (cfg, interface_fail_bb);
4892                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4893
4894                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4895
4896                 tmp_reg = alloc_preg (cfg);
4897                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4898                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4899                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4900
4901                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4902                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4903 #else
4904                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4905                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4906                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4907 #endif
4908         } else {
4909 #ifndef DISABLE_REMOTING
4910                 NEW_BBLOCK (cfg, no_proxy_bb);
4911
4912                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4913                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4914                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4915
4916                 tmp_reg = alloc_preg (cfg);
4917                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4918                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4919
4920                 tmp_reg = alloc_preg (cfg);
4921                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4922                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4923                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4924
4925                 NEW_BBLOCK (cfg, fail_1_bb);
4926
4927                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4928
4929                 MONO_START_BB (cfg, fail_1_bb);
4930
4931                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4932                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4933
4934                 MONO_START_BB (cfg, no_proxy_bb);
4935
4936                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4937 #else
4938                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4939 #endif
4940         }
4941
4942         MONO_START_BB (cfg, ok_result_bb);
4943
4944         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4945
4946 #ifndef DISABLE_REMOTING
4947         MONO_START_BB (cfg, end_bb);
4948 #endif
4949
4950         /* FIXME: */
4951         MONO_INST_NEW (cfg, ins, OP_ICONST);
4952         ins->dreg = dreg;
4953         ins->type = STACK_I4;
4954
4955         return ins;
4956 }
4957
4958 static G_GNUC_UNUSED MonoInst*
4959 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4960 {
4961         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4962         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4963         gboolean is_i4;
4964
4965         switch (enum_type->type) {
4966         case MONO_TYPE_I8:
4967         case MONO_TYPE_U8:
4968 #if SIZEOF_REGISTER == 8
4969         case MONO_TYPE_I:
4970         case MONO_TYPE_U:
4971 #endif
4972                 is_i4 = FALSE;
4973                 break;
4974         default:
4975                 is_i4 = TRUE;
4976                 break;
4977         }
4978
4979         {
4980                 MonoInst *load, *and_, *cmp, *ceq;
4981                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4982                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4983                 int dest_reg = alloc_ireg (cfg);
4984
4985                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
4986                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
4987                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
4988                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
4989
4990                 ceq->type = STACK_I4;
4991
4992                 if (!is_i4) {
4993                         load = mono_decompose_opcode (cfg, load);
4994                         and_ = mono_decompose_opcode (cfg, and_);
4995                         cmp = mono_decompose_opcode (cfg, cmp);
4996                         ceq = mono_decompose_opcode (cfg, ceq);
4997                 }
4998
4999                 return ceq;
5000         }
5001 }
5002
5003 /*
5004  * Returns NULL and set the cfg exception on error.
5005  */
5006 static G_GNUC_UNUSED MonoInst*
5007 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5008 {
5009         MonoInst *ptr;
5010         int dreg;
5011         gpointer trampoline;
5012         MonoInst *obj, *method_ins, *tramp_ins;
5013         MonoDomain *domain;
5014         guint8 **code_slot;
5015
5016         if (virtual_ && !cfg->llvm_only) {
5017                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5018                 g_assert (invoke);
5019
5020                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5021                         return NULL;
5022         }
5023
5024         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5025         if (!obj)
5026                 return NULL;
5027
5028         /* Inline the contents of mono_delegate_ctor */
5029
5030         /* Set target field */
5031         /* Optimize away setting of NULL target */
5032         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5033                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5034                 if (cfg->gen_write_barriers) {
5035                         dreg = alloc_preg (cfg);
5036                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5037                         emit_write_barrier (cfg, ptr, target);
5038                 }
5039         }
5040
5041         /* Set method field */
5042         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5043         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5044
5045         /*
5046          * To avoid looking up the compiled code belonging to the target method
5047          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5048          * store it, and we fill it after the method has been compiled.
5049          */
5050         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5051                 MonoInst *code_slot_ins;
5052
5053                 if (context_used) {
5054                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5055                 } else {
5056                         domain = mono_domain_get ();
5057                         mono_domain_lock (domain);
5058                         if (!domain_jit_info (domain)->method_code_hash)
5059                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5060                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5061                         if (!code_slot) {
5062                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5063                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5064                         }
5065                         mono_domain_unlock (domain);
5066
5067                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5068                 }
5069                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5070         }
5071
5072         if (cfg->llvm_only) {
5073                 MonoInst *args [16];
5074
5075                 if (virtual_) {
5076                         args [0] = obj;
5077                         args [1] = target;
5078                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5079                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5080                 } else {
5081                         args [0] = obj;
5082                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5083                 }
5084
5085                 return obj;
5086         }
5087
5088         if (cfg->compile_aot) {
5089                 MonoDelegateClassMethodPair *del_tramp;
5090
5091                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5092                 del_tramp->klass = klass;
5093                 del_tramp->method = context_used ? NULL : method;
5094                 del_tramp->is_virtual = virtual_;
5095                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5096         } else {
5097                 if (virtual_)
5098                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5099                 else
5100                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5101                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5102         }
5103
5104         /* Set invoke_impl field */
5105         if (virtual_) {
5106                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5107         } else {
5108                 dreg = alloc_preg (cfg);
5109                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5110                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5111
5112                 dreg = alloc_preg (cfg);
5113                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5114                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5115         }
5116
5117         dreg = alloc_preg (cfg);
5118         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5119         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5120
5121         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5122
5123         return obj;
5124 }
5125
5126 static MonoInst*
5127 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5128 {
5129         MonoJitICallInfo *info;
5130
5131         /* Need to register the icall so it gets an icall wrapper */
5132         info = mono_get_array_new_va_icall (rank);
5133
5134         cfg->flags |= MONO_CFG_HAS_VARARGS;
5135
5136         /* mono_array_new_va () needs a vararg calling convention */
5137         cfg->exception_message = g_strdup ("array-new");
5138         cfg->disable_llvm = TRUE;
5139
5140         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5141         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5142 }
5143
5144 /*
5145  * handle_constrained_gsharedvt_call:
5146  *
5147  *   Handle constrained calls where the receiver is a gsharedvt type.
5148  * Return the instruction representing the call. Set the cfg exception on failure.
5149  */
5150 static MonoInst*
5151 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5152                                                                    gboolean *ref_emit_widen)
5153 {
5154         MonoInst *ins = NULL;
5155         gboolean emit_widen = *ref_emit_widen;
5156
5157         /*
5158          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5159          * 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
5160          * pack the arguments into an array, and do the rest of the work in in an icall.
5161          */
5162         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5163                 (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)) &&
5164                 (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]))))) {
5165                 MonoInst *args [16];
5166
5167                 /*
5168                  * This case handles calls to
5169                  * - object:ToString()/Equals()/GetHashCode(),
5170                  * - System.IComparable<T>:CompareTo()
5171                  * - System.IEquatable<T>:Equals ()
5172                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5173                  */
5174
5175                 args [0] = sp [0];
5176                 if (mono_method_check_context_used (cmethod))
5177                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5178                 else
5179                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5180                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5181
5182                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5183                 if (fsig->hasthis && fsig->param_count) {
5184                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5185                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5186                         ins->dreg = alloc_preg (cfg);
5187                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5188                         MONO_ADD_INS (cfg->cbb, ins);
5189                         args [4] = ins;
5190
5191                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5192                                 int addr_reg, deref_arg_reg;
5193
5194                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5195                                 deref_arg_reg = alloc_preg (cfg);
5196                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5197                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5198
5199                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5200                                 addr_reg = ins->dreg;
5201                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5202                         } else {
5203                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5204                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5205                         }
5206                 } else {
5207                         EMIT_NEW_ICONST (cfg, args [3], 0);
5208                         EMIT_NEW_ICONST (cfg, args [4], 0);
5209                 }
5210                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5211                 emit_widen = FALSE;
5212
5213                 if (mini_is_gsharedvt_type (fsig->ret)) {
5214                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5215                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5216                         MonoInst *add;
5217
5218                         /* Unbox */
5219                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5220                         MONO_ADD_INS (cfg->cbb, add);
5221                         /* Load value */
5222                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5223                         MONO_ADD_INS (cfg->cbb, ins);
5224                         /* ins represents the call result */
5225                 }
5226         } else {
5227                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5228         }
5229
5230         *ref_emit_widen = emit_widen;
5231
5232         return ins;
5233
5234  exception_exit:
5235         return NULL;
5236 }
5237
5238 static void
5239 mono_emit_load_got_addr (MonoCompile *cfg)
5240 {
5241         MonoInst *getaddr, *dummy_use;
5242
5243         if (!cfg->got_var || cfg->got_var_allocated)
5244                 return;
5245
5246         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5247         getaddr->cil_code = cfg->header->code;
5248         getaddr->dreg = cfg->got_var->dreg;
5249
5250         /* Add it to the start of the first bblock */
5251         if (cfg->bb_entry->code) {
5252                 getaddr->next = cfg->bb_entry->code;
5253                 cfg->bb_entry->code = getaddr;
5254         }
5255         else
5256                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5257
5258         cfg->got_var_allocated = TRUE;
5259
5260         /*
5261          * Add a dummy use to keep the got_var alive, since real uses might
5262          * only be generated by the back ends.
5263          * Add it to end_bblock, so the variable's lifetime covers the whole
5264          * method.
5265          * It would be better to make the usage of the got var explicit in all
5266          * cases when the backend needs it (i.e. calls, throw etc.), so this
5267          * wouldn't be needed.
5268          */
5269         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5270         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5271 }
5272
5273 static int inline_limit;
5274 static gboolean inline_limit_inited;
5275
5276 static gboolean
5277 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5278 {
5279         MonoMethodHeaderSummary header;
5280         MonoVTable *vtable;
5281 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5282         MonoMethodSignature *sig = mono_method_signature (method);
5283         int i;
5284 #endif
5285
5286         if (cfg->disable_inline)
5287                 return FALSE;
5288         if (cfg->gshared)
5289                 return FALSE;
5290
5291         if (cfg->inline_depth > 10)
5292                 return FALSE;
5293
5294         if (!mono_method_get_header_summary (method, &header))
5295                 return FALSE;
5296
5297         /*runtime, icall and pinvoke are checked by summary call*/
5298         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5299             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5300             (mono_class_is_marshalbyref (method->klass)) ||
5301             header.has_clauses)
5302                 return FALSE;
5303
5304         /* also consider num_locals? */
5305         /* Do the size check early to avoid creating vtables */
5306         if (!inline_limit_inited) {
5307                 if (g_getenv ("MONO_INLINELIMIT"))
5308                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5309                 else
5310                         inline_limit = INLINE_LENGTH_LIMIT;
5311                 inline_limit_inited = TRUE;
5312         }
5313         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5314                 return FALSE;
5315
5316         /*
5317          * if we can initialize the class of the method right away, we do,
5318          * otherwise we don't allow inlining if the class needs initialization,
5319          * since it would mean inserting a call to mono_runtime_class_init()
5320          * inside the inlined code
5321          */
5322         if (!(cfg->opt & MONO_OPT_SHARED)) {
5323                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5324                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5325                         vtable = mono_class_vtable (cfg->domain, method->klass);
5326                         if (!vtable)
5327                                 return FALSE;
5328                         if (!cfg->compile_aot) {
5329                                 MonoError error;
5330                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5331                                         mono_error_cleanup (&error);
5332                                         return FALSE;
5333                                 }
5334                         }
5335                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5336                         if (cfg->run_cctors && method->klass->has_cctor) {
5337                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5338                                 if (!method->klass->runtime_info)
5339                                         /* No vtable created yet */
5340                                         return FALSE;
5341                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5342                                 if (!vtable)
5343                                         return FALSE;
5344                                 /* This makes so that inline cannot trigger */
5345                                 /* .cctors: too many apps depend on them */
5346                                 /* running with a specific order... */
5347                                 if (! vtable->initialized)
5348                                         return FALSE;
5349                                 MonoError error;
5350                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5351                                         mono_error_cleanup (&error);
5352                                         return FALSE;
5353                                 }
5354                         }
5355                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5356                         if (!method->klass->runtime_info)
5357                                 /* No vtable created yet */
5358                                 return FALSE;
5359                         vtable = mono_class_vtable (cfg->domain, method->klass);
5360                         if (!vtable)
5361                                 return FALSE;
5362                         if (!vtable->initialized)
5363                                 return FALSE;
5364                 }
5365         } else {
5366                 /*
5367                  * If we're compiling for shared code
5368                  * the cctor will need to be run at aot method load time, for example,
5369                  * or at the end of the compilation of the inlining method.
5370                  */
5371                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5372                         return FALSE;
5373         }
5374
5375 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5376         if (mono_arch_is_soft_float ()) {
5377                 /* FIXME: */
5378                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5379                         return FALSE;
5380                 for (i = 0; i < sig->param_count; ++i)
5381                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5382                                 return FALSE;
5383         }
5384 #endif
5385
5386         if (g_list_find (cfg->dont_inline, method))
5387                 return FALSE;
5388
5389         return TRUE;
5390 }
5391
5392 static gboolean
5393 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5394 {
5395         if (!cfg->compile_aot) {
5396                 g_assert (vtable);
5397                 if (vtable->initialized)
5398                         return FALSE;
5399         }
5400
5401         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5402                 if (cfg->method == method)
5403                         return FALSE;
5404         }
5405
5406         if (!mono_class_needs_cctor_run (klass, method))
5407                 return FALSE;
5408
5409         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5410                 /* The initialization is already done before the method is called */
5411                 return FALSE;
5412
5413         return TRUE;
5414 }
5415
5416 static MonoInst*
5417 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5418 {
5419         MonoInst *ins;
5420         guint32 size;
5421         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5422         int context_used;
5423
5424         if (mini_is_gsharedvt_variable_klass (klass)) {
5425                 size = -1;
5426         } else {
5427                 mono_class_init (klass);
5428                 size = mono_class_array_element_size (klass);
5429         }
5430
5431         mult_reg = alloc_preg (cfg);
5432         array_reg = arr->dreg;
5433         index_reg = index->dreg;
5434
5435 #if SIZEOF_REGISTER == 8
5436         /* The array reg is 64 bits but the index reg is only 32 */
5437         if (COMPILE_LLVM (cfg)) {
5438                 /* Not needed */
5439                 index2_reg = index_reg;
5440         } else {
5441                 index2_reg = alloc_preg (cfg);
5442                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5443         }
5444 #else
5445         if (index->type == STACK_I8) {
5446                 index2_reg = alloc_preg (cfg);
5447                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5448         } else {
5449                 index2_reg = index_reg;
5450         }
5451 #endif
5452
5453         if (bcheck)
5454                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5455
5456 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5457         if (size == 1 || size == 2 || size == 4 || size == 8) {
5458                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5459
5460                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5461                 ins->klass = mono_class_get_element_class (klass);
5462                 ins->type = STACK_MP;
5463
5464                 return ins;
5465         }
5466 #endif
5467
5468         add_reg = alloc_ireg_mp (cfg);
5469
5470         if (size == -1) {
5471                 MonoInst *rgctx_ins;
5472
5473                 /* gsharedvt */
5474                 g_assert (cfg->gshared);
5475                 context_used = mini_class_check_context_used (cfg, klass);
5476                 g_assert (context_used);
5477                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5478                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5479         } else {
5480                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5481         }
5482         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5483         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5484         ins->klass = mono_class_get_element_class (klass);
5485         ins->type = STACK_MP;
5486         MONO_ADD_INS (cfg->cbb, ins);
5487
5488         return ins;
5489 }
5490
5491 static MonoInst*
5492 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5493 {
5494         int bounds_reg = alloc_preg (cfg);
5495         int add_reg = alloc_ireg_mp (cfg);
5496         int mult_reg = alloc_preg (cfg);
5497         int mult2_reg = alloc_preg (cfg);
5498         int low1_reg = alloc_preg (cfg);
5499         int low2_reg = alloc_preg (cfg);
5500         int high1_reg = alloc_preg (cfg);
5501         int high2_reg = alloc_preg (cfg);
5502         int realidx1_reg = alloc_preg (cfg);
5503         int realidx2_reg = alloc_preg (cfg);
5504         int sum_reg = alloc_preg (cfg);
5505         int index1, index2, tmpreg;
5506         MonoInst *ins;
5507         guint32 size;
5508
5509         mono_class_init (klass);
5510         size = mono_class_array_element_size (klass);
5511
5512         index1 = index_ins1->dreg;
5513         index2 = index_ins2->dreg;
5514
5515 #if SIZEOF_REGISTER == 8
5516         /* The array reg is 64 bits but the index reg is only 32 */
5517         if (COMPILE_LLVM (cfg)) {
5518                 /* Not needed */
5519         } else {
5520                 tmpreg = alloc_preg (cfg);
5521                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5522                 index1 = tmpreg;
5523                 tmpreg = alloc_preg (cfg);
5524                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5525                 index2 = tmpreg;
5526         }
5527 #else
5528         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5529         tmpreg = -1;
5530 #endif
5531
5532         /* range checking */
5533         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5534                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5535
5536         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5537                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5538         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5539         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5540                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5541         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5542         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5543
5544         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5545                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5546         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5547         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5548                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5549         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5550         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5551
5552         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5553         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5554         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5555         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5556         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5557
5558         ins->type = STACK_MP;
5559         ins->klass = klass;
5560         MONO_ADD_INS (cfg->cbb, ins);
5561
5562         return ins;
5563 }
5564
5565 static MonoInst*
5566 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5567 {
5568         int rank;
5569         MonoInst *addr;
5570         MonoMethod *addr_method;
5571         int element_size;
5572         MonoClass *eclass = cmethod->klass->element_class;
5573
5574         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5575
5576         if (rank == 1)
5577                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5578
5579         /* emit_ldelema_2 depends on OP_LMUL */
5580         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5581                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5582         }
5583
5584         if (mini_is_gsharedvt_variable_klass (eclass))
5585                 element_size = 0;
5586         else
5587                 element_size = mono_class_array_element_size (eclass);
5588         addr_method = mono_marshal_get_array_address (rank, element_size);
5589         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5590
5591         return addr;
5592 }
5593
5594 static MonoBreakPolicy
5595 always_insert_breakpoint (MonoMethod *method)
5596 {
5597         return MONO_BREAK_POLICY_ALWAYS;
5598 }
5599
5600 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5601
5602 /**
5603  * mono_set_break_policy:
5604  * policy_callback: the new callback function
5605  *
5606  * Allow embedders to decide wherther to actually obey breakpoint instructions
5607  * (both break IL instructions and Debugger.Break () method calls), for example
5608  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5609  * untrusted or semi-trusted code.
5610  *
5611  * @policy_callback will be called every time a break point instruction needs to
5612  * be inserted with the method argument being the method that calls Debugger.Break()
5613  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5614  * if it wants the breakpoint to not be effective in the given method.
5615  * #MONO_BREAK_POLICY_ALWAYS is the default.
5616  */
5617 void
5618 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5619 {
5620         if (policy_callback)
5621                 break_policy_func = policy_callback;
5622         else
5623                 break_policy_func = always_insert_breakpoint;
5624 }
5625
5626 static gboolean
5627 should_insert_brekpoint (MonoMethod *method) {
5628         switch (break_policy_func (method)) {
5629         case MONO_BREAK_POLICY_ALWAYS:
5630                 return TRUE;
5631         case MONO_BREAK_POLICY_NEVER:
5632                 return FALSE;
5633         case MONO_BREAK_POLICY_ON_DBG:
5634                 g_warning ("mdb no longer supported");
5635                 return FALSE;
5636         default:
5637                 g_warning ("Incorrect value returned from break policy callback");
5638                 return FALSE;
5639         }
5640 }
5641
5642 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5643 static MonoInst*
5644 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5645 {
5646         MonoInst *addr, *store, *load;
5647         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5648
5649         /* the bounds check is already done by the callers */
5650         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5651         if (is_set) {
5652                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5653                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5654                 if (mini_type_is_reference (fsig->params [2]))
5655                         emit_write_barrier (cfg, addr, load);
5656         } else {
5657                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5658                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5659         }
5660         return store;
5661 }
5662
5663
5664 static gboolean
5665 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5666 {
5667         return mini_type_is_reference (&klass->byval_arg);
5668 }
5669
5670 static MonoInst*
5671 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5672 {
5673         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5674                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5675                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5676                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5677                 MonoInst *iargs [3];
5678
5679                 if (!helper->slot)
5680                         mono_class_setup_vtable (obj_array);
5681                 g_assert (helper->slot);
5682
5683                 if (sp [0]->type != STACK_OBJ)
5684                         return NULL;
5685                 if (sp [2]->type != STACK_OBJ)
5686                         return NULL;
5687
5688                 iargs [2] = sp [2];
5689                 iargs [1] = sp [1];
5690                 iargs [0] = sp [0];
5691
5692                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5693         } else {
5694                 MonoInst *ins;
5695
5696                 if (mini_is_gsharedvt_variable_klass (klass)) {
5697                         MonoInst *addr;
5698
5699                         // FIXME-VT: OP_ICONST optimization
5700                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5701                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5702                         ins->opcode = OP_STOREV_MEMBASE;
5703                 } else if (sp [1]->opcode == OP_ICONST) {
5704                         int array_reg = sp [0]->dreg;
5705                         int index_reg = sp [1]->dreg;
5706                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5707
5708                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5709                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5710
5711                         if (safety_checks)
5712                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5713                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5714                 } else {
5715                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5716                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5717                         if (generic_class_is_reference_type (cfg, klass))
5718                                 emit_write_barrier (cfg, addr, sp [2]);
5719                 }
5720                 return ins;
5721         }
5722 }
5723
5724 static MonoInst*
5725 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5726 {
5727         MonoClass *eklass;
5728
5729         if (is_set)
5730                 eklass = mono_class_from_mono_type (fsig->params [2]);
5731         else
5732                 eklass = mono_class_from_mono_type (fsig->ret);
5733
5734         if (is_set) {
5735                 return emit_array_store (cfg, eklass, args, FALSE);
5736         } else {
5737                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5738                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5739                 return ins;
5740         }
5741 }
5742
5743 static gboolean
5744 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5745 {
5746         uint32_t align;
5747         int param_size, return_size;
5748
5749         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5750         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5751
5752         if (cfg->verbose_level > 3)
5753                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5754
5755         //Don't allow mixing reference types with value types
5756         if (param_klass->valuetype != return_klass->valuetype) {
5757                 if (cfg->verbose_level > 3)
5758                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5759                 return FALSE;
5760         }
5761
5762         if (!param_klass->valuetype) {
5763                 if (cfg->verbose_level > 3)
5764                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5765                 return TRUE;
5766         }
5767
5768         //That are blitable
5769         if (param_klass->has_references || return_klass->has_references)
5770                 return FALSE;
5771
5772         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5773         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5774                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5775                         if (cfg->verbose_level > 3)
5776                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5777                 return FALSE;
5778         }
5779
5780         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5781                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5782                 if (cfg->verbose_level > 3)
5783                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5784                 return FALSE;
5785         }
5786
5787         param_size = mono_class_value_size (param_klass, &align);
5788         return_size = mono_class_value_size (return_klass, &align);
5789
5790         //We can do it if sizes match
5791         if (param_size == return_size) {
5792                 if (cfg->verbose_level > 3)
5793                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5794                 return TRUE;
5795         }
5796
5797         //No simple way to handle struct if sizes don't match
5798         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5799                 if (cfg->verbose_level > 3)
5800                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5801                 return FALSE;
5802         }
5803
5804         /*
5805          * Same reg size category.
5806          * A quick note on why we don't require widening here.
5807          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5808          *
5809          * Since the source value comes from a function argument, the JIT will already have
5810          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5811          */
5812         if (param_size <= 4 && return_size <= 4) {
5813                 if (cfg->verbose_level > 3)
5814                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5815                 return TRUE;
5816         }
5817
5818         return FALSE;
5819 }
5820
5821 static MonoInst*
5822 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5823 {
5824         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5825         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5826
5827         if (mini_is_gsharedvt_variable_type (fsig->ret))
5828                 return NULL;
5829
5830         //Valuetypes that are semantically equivalent or numbers than can be widened to
5831         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5832                 return args [0];
5833
5834         //Arrays of valuetypes that are semantically equivalent
5835         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5836                 return args [0];
5837
5838         return NULL;
5839 }
5840
5841 static MonoInst*
5842 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5843 {
5844 #ifdef MONO_ARCH_SIMD_INTRINSICS
5845         MonoInst *ins = NULL;
5846
5847         if (cfg->opt & MONO_OPT_SIMD) {
5848                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5849                 if (ins)
5850                         return ins;
5851         }
5852 #endif
5853
5854         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5855 }
5856
5857 static MonoInst*
5858 emit_memory_barrier (MonoCompile *cfg, int kind)
5859 {
5860         MonoInst *ins = NULL;
5861         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5862         MONO_ADD_INS (cfg->cbb, ins);
5863         ins->backend.memory_barrier_kind = kind;
5864
5865         return ins;
5866 }
5867
5868 static MonoInst*
5869 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5870 {
5871         MonoInst *ins = NULL;
5872         int opcode = 0;
5873
5874         /* The LLVM backend supports these intrinsics */
5875         if (cmethod->klass == mono_defaults.math_class) {
5876                 if (strcmp (cmethod->name, "Sin") == 0) {
5877                         opcode = OP_SIN;
5878                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5879                         opcode = OP_COS;
5880                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5881                         opcode = OP_SQRT;
5882                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5883                         opcode = OP_ABS;
5884                 }
5885
5886                 if (opcode && fsig->param_count == 1) {
5887                         MONO_INST_NEW (cfg, ins, opcode);
5888                         ins->type = STACK_R8;
5889                         ins->dreg = mono_alloc_freg (cfg);
5890                         ins->sreg1 = args [0]->dreg;
5891                         MONO_ADD_INS (cfg->cbb, ins);
5892                 }
5893
5894                 opcode = 0;
5895                 if (cfg->opt & MONO_OPT_CMOV) {
5896                         if (strcmp (cmethod->name, "Min") == 0) {
5897                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5898                                         opcode = OP_IMIN;
5899                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5900                                         opcode = OP_IMIN_UN;
5901                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5902                                         opcode = OP_LMIN;
5903                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5904                                         opcode = OP_LMIN_UN;
5905                         } else if (strcmp (cmethod->name, "Max") == 0) {
5906                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5907                                         opcode = OP_IMAX;
5908                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5909                                         opcode = OP_IMAX_UN;
5910                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5911                                         opcode = OP_LMAX;
5912                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5913                                         opcode = OP_LMAX_UN;
5914                         }
5915                 }
5916
5917                 if (opcode && fsig->param_count == 2) {
5918                         MONO_INST_NEW (cfg, ins, opcode);
5919                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5920                         ins->dreg = mono_alloc_ireg (cfg);
5921                         ins->sreg1 = args [0]->dreg;
5922                         ins->sreg2 = args [1]->dreg;
5923                         MONO_ADD_INS (cfg->cbb, ins);
5924                 }
5925         }
5926
5927         return ins;
5928 }
5929
5930 static MonoInst*
5931 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5932 {
5933         if (cmethod->klass == mono_defaults.array_class) {
5934                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5935                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5936                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5937                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5938                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5939                         return emit_array_unsafe_mov (cfg, fsig, args);
5940         }
5941
5942         return NULL;
5943 }
5944
5945 static MonoInst*
5946 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5947 {
5948         MonoInst *ins = NULL;
5949
5950          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5951
5952         if (cmethod->klass == mono_defaults.string_class) {
5953                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5954                         int dreg = alloc_ireg (cfg);
5955                         int index_reg = alloc_preg (cfg);
5956                         int add_reg = alloc_preg (cfg);
5957
5958 #if SIZEOF_REGISTER == 8
5959                         if (COMPILE_LLVM (cfg)) {
5960                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5961                         } else {
5962                                 /* The array reg is 64 bits but the index reg is only 32 */
5963                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5964                         }
5965 #else
5966                         index_reg = args [1]->dreg;
5967 #endif
5968                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5969
5970 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5971                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5972                         add_reg = ins->dreg;
5973                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5974                                                                    add_reg, 0);
5975 #else
5976                         int mult_reg = alloc_preg (cfg);
5977                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5978                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5979                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5980                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5981 #endif
5982                         type_from_op (cfg, ins, NULL, NULL);
5983                         return ins;
5984                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5985                         int dreg = alloc_ireg (cfg);
5986                         /* Decompose later to allow more optimizations */
5987                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5988                         ins->type = STACK_I4;
5989                         ins->flags |= MONO_INST_FAULT;
5990                         cfg->cbb->has_array_access = TRUE;
5991                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
5992
5993                         return ins;
5994                 } else
5995                         return NULL;
5996         } else if (cmethod->klass == mono_defaults.object_class) {
5997                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
5998                         int dreg = alloc_ireg_ref (cfg);
5999                         int vt_reg = alloc_preg (cfg);
6000                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6001                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6002                         type_from_op (cfg, ins, NULL, NULL);
6003
6004                         return ins;
6005                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6006                         int dreg = alloc_ireg (cfg);
6007                         int t1 = alloc_ireg (cfg);
6008
6009                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6010                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6011                         ins->type = STACK_I4;
6012
6013                         return ins;
6014                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6015                         MONO_INST_NEW (cfg, ins, OP_NOP);
6016                         MONO_ADD_INS (cfg->cbb, ins);
6017                         return ins;
6018                 } else
6019                         return NULL;
6020         } else if (cmethod->klass == mono_defaults.array_class) {
6021                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6022                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6023                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6024                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6025
6026 #ifndef MONO_BIG_ARRAYS
6027                 /*
6028                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6029                  * Array methods.
6030                  */
6031                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6032                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6033                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6034                         int dreg = alloc_ireg (cfg);
6035                         int bounds_reg = alloc_ireg_mp (cfg);
6036                         MonoBasicBlock *end_bb, *szarray_bb;
6037                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6038
6039                         NEW_BBLOCK (cfg, end_bb);
6040                         NEW_BBLOCK (cfg, szarray_bb);
6041
6042                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6043                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6044                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6045                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6046                         /* Non-szarray case */
6047                         if (get_length)
6048                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6049                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6050                         else
6051                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6052                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6053                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6054                         MONO_START_BB (cfg, szarray_bb);
6055                         /* Szarray case */
6056                         if (get_length)
6057                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6058                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6059                         else
6060                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6061                         MONO_START_BB (cfg, end_bb);
6062
6063                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6064                         ins->type = STACK_I4;
6065
6066                         return ins;
6067                 }
6068 #endif
6069
6070                 if (cmethod->name [0] != 'g')
6071                         return NULL;
6072
6073                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6074                         int dreg = alloc_ireg (cfg);
6075                         int vtable_reg = alloc_preg (cfg);
6076                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6077                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6078                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6079                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6080                         type_from_op (cfg, ins, NULL, NULL);
6081
6082                         return ins;
6083                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6084                         int dreg = alloc_ireg (cfg);
6085
6086                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6087                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6088                         type_from_op (cfg, ins, NULL, NULL);
6089
6090                         return ins;
6091                 } else
6092                         return NULL;
6093         } else if (cmethod->klass == runtime_helpers_class) {
6094                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6095                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6096                         return ins;
6097                 } else
6098                         return NULL;
6099         } else if (cmethod->klass == mono_defaults.monitor_class) {
6100                 gboolean is_enter = FALSE;
6101
6102                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6103                         is_enter = TRUE;
6104
6105                 if (is_enter) {
6106                         /*
6107                          * To make async stack traces work, icalls which can block should have a wrapper.
6108                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6109                          */
6110                         MonoBasicBlock *end_bb;
6111
6112                         NEW_BBLOCK (cfg, end_bb);
6113
6114                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6115                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6116                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6117                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6118                         MONO_START_BB (cfg, end_bb);
6119                         return ins;
6120                 }
6121         } else if (cmethod->klass == mono_defaults.thread_class) {
6122                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6123                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6124                         MONO_ADD_INS (cfg->cbb, ins);
6125                         return ins;
6126                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6127                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6128                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6129                         guint32 opcode = 0;
6130                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6131
6132                         if (fsig->params [0]->type == MONO_TYPE_I1)
6133                                 opcode = OP_LOADI1_MEMBASE;
6134                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6135                                 opcode = OP_LOADU1_MEMBASE;
6136                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6137                                 opcode = OP_LOADI2_MEMBASE;
6138                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6139                                 opcode = OP_LOADU2_MEMBASE;
6140                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6141                                 opcode = OP_LOADI4_MEMBASE;
6142                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6143                                 opcode = OP_LOADU4_MEMBASE;
6144                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6145                                 opcode = OP_LOADI8_MEMBASE;
6146                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6147                                 opcode = OP_LOADR4_MEMBASE;
6148                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6149                                 opcode = OP_LOADR8_MEMBASE;
6150                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6151                                 opcode = OP_LOAD_MEMBASE;
6152
6153                         if (opcode) {
6154                                 MONO_INST_NEW (cfg, ins, opcode);
6155                                 ins->inst_basereg = args [0]->dreg;
6156                                 ins->inst_offset = 0;
6157                                 MONO_ADD_INS (cfg->cbb, ins);
6158
6159                                 switch (fsig->params [0]->type) {
6160                                 case MONO_TYPE_I1:
6161                                 case MONO_TYPE_U1:
6162                                 case MONO_TYPE_I2:
6163                                 case MONO_TYPE_U2:
6164                                 case MONO_TYPE_I4:
6165                                 case MONO_TYPE_U4:
6166                                         ins->dreg = mono_alloc_ireg (cfg);
6167                                         ins->type = STACK_I4;
6168                                         break;
6169                                 case MONO_TYPE_I8:
6170                                 case MONO_TYPE_U8:
6171                                         ins->dreg = mono_alloc_lreg (cfg);
6172                                         ins->type = STACK_I8;
6173                                         break;
6174                                 case MONO_TYPE_I:
6175                                 case MONO_TYPE_U:
6176                                         ins->dreg = mono_alloc_ireg (cfg);
6177 #if SIZEOF_REGISTER == 8
6178                                         ins->type = STACK_I8;
6179 #else
6180                                         ins->type = STACK_I4;
6181 #endif
6182                                         break;
6183                                 case MONO_TYPE_R4:
6184                                 case MONO_TYPE_R8:
6185                                         ins->dreg = mono_alloc_freg (cfg);
6186                                         ins->type = STACK_R8;
6187                                         break;
6188                                 default:
6189                                         g_assert (mini_type_is_reference (fsig->params [0]));
6190                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6191                                         ins->type = STACK_OBJ;
6192                                         break;
6193                                 }
6194
6195                                 if (opcode == OP_LOADI8_MEMBASE)
6196                                         ins = mono_decompose_opcode (cfg, ins);
6197
6198                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6199
6200                                 return ins;
6201                         }
6202                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6203                         guint32 opcode = 0;
6204                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6205
6206                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6207                                 opcode = OP_STOREI1_MEMBASE_REG;
6208                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6209                                 opcode = OP_STOREI2_MEMBASE_REG;
6210                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6211                                 opcode = OP_STOREI4_MEMBASE_REG;
6212                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6213                                 opcode = OP_STOREI8_MEMBASE_REG;
6214                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6215                                 opcode = OP_STORER4_MEMBASE_REG;
6216                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6217                                 opcode = OP_STORER8_MEMBASE_REG;
6218                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6219                                 opcode = OP_STORE_MEMBASE_REG;
6220
6221                         if (opcode) {
6222                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6223
6224                                 MONO_INST_NEW (cfg, ins, opcode);
6225                                 ins->sreg1 = args [1]->dreg;
6226                                 ins->inst_destbasereg = args [0]->dreg;
6227                                 ins->inst_offset = 0;
6228                                 MONO_ADD_INS (cfg->cbb, ins);
6229
6230                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6231                                         ins = mono_decompose_opcode (cfg, ins);
6232
6233                                 return ins;
6234                         }
6235                 }
6236         } else if (cmethod->klass->image == mono_defaults.corlib &&
6237                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6238                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6239                 ins = NULL;
6240
6241 #if SIZEOF_REGISTER == 8
6242                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6243                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6244                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6245                                 ins->dreg = mono_alloc_preg (cfg);
6246                                 ins->sreg1 = args [0]->dreg;
6247                                 ins->type = STACK_I8;
6248                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6249                                 MONO_ADD_INS (cfg->cbb, ins);
6250                         } else {
6251                                 MonoInst *load_ins;
6252
6253                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6254
6255                                 /* 64 bit reads are already atomic */
6256                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6257                                 load_ins->dreg = mono_alloc_preg (cfg);
6258                                 load_ins->inst_basereg = args [0]->dreg;
6259                                 load_ins->inst_offset = 0;
6260                                 load_ins->type = STACK_I8;
6261                                 MONO_ADD_INS (cfg->cbb, load_ins);
6262
6263                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6264
6265                                 ins = load_ins;
6266                         }
6267                 }
6268 #endif
6269
6270                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6271                         MonoInst *ins_iconst;
6272                         guint32 opcode = 0;
6273
6274                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6275                                 opcode = OP_ATOMIC_ADD_I4;
6276                                 cfg->has_atomic_add_i4 = TRUE;
6277                         }
6278 #if SIZEOF_REGISTER == 8
6279                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6280                                 opcode = OP_ATOMIC_ADD_I8;
6281 #endif
6282                         if (opcode) {
6283                                 if (!mono_arch_opcode_supported (opcode))
6284                                         return NULL;
6285                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6286                                 ins_iconst->inst_c0 = 1;
6287                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6288                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6289
6290                                 MONO_INST_NEW (cfg, ins, opcode);
6291                                 ins->dreg = mono_alloc_ireg (cfg);
6292                                 ins->inst_basereg = args [0]->dreg;
6293                                 ins->inst_offset = 0;
6294                                 ins->sreg2 = ins_iconst->dreg;
6295                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6296                                 MONO_ADD_INS (cfg->cbb, ins);
6297                         }
6298                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6299                         MonoInst *ins_iconst;
6300                         guint32 opcode = 0;
6301
6302                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6303                                 opcode = OP_ATOMIC_ADD_I4;
6304                                 cfg->has_atomic_add_i4 = TRUE;
6305                         }
6306 #if SIZEOF_REGISTER == 8
6307                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6308                                 opcode = OP_ATOMIC_ADD_I8;
6309 #endif
6310                         if (opcode) {
6311                                 if (!mono_arch_opcode_supported (opcode))
6312                                         return NULL;
6313                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6314                                 ins_iconst->inst_c0 = -1;
6315                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6316                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6317
6318                                 MONO_INST_NEW (cfg, ins, opcode);
6319                                 ins->dreg = mono_alloc_ireg (cfg);
6320                                 ins->inst_basereg = args [0]->dreg;
6321                                 ins->inst_offset = 0;
6322                                 ins->sreg2 = ins_iconst->dreg;
6323                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6324                                 MONO_ADD_INS (cfg->cbb, ins);
6325                         }
6326                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6327                         guint32 opcode = 0;
6328
6329                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6330                                 opcode = OP_ATOMIC_ADD_I4;
6331                                 cfg->has_atomic_add_i4 = TRUE;
6332                         }
6333 #if SIZEOF_REGISTER == 8
6334                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6335                                 opcode = OP_ATOMIC_ADD_I8;
6336 #endif
6337                         if (opcode) {
6338                                 if (!mono_arch_opcode_supported (opcode))
6339                                         return NULL;
6340                                 MONO_INST_NEW (cfg, ins, opcode);
6341                                 ins->dreg = mono_alloc_ireg (cfg);
6342                                 ins->inst_basereg = args [0]->dreg;
6343                                 ins->inst_offset = 0;
6344                                 ins->sreg2 = args [1]->dreg;
6345                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6346                                 MONO_ADD_INS (cfg->cbb, ins);
6347                         }
6348                 }
6349                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6350                         MonoInst *f2i = NULL, *i2f;
6351                         guint32 opcode, f2i_opcode, i2f_opcode;
6352                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6353                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6354
6355                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6356                             fsig->params [0]->type == MONO_TYPE_R4) {
6357                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6358                                 f2i_opcode = OP_MOVE_F_TO_I4;
6359                                 i2f_opcode = OP_MOVE_I4_TO_F;
6360                                 cfg->has_atomic_exchange_i4 = TRUE;
6361                         }
6362 #if SIZEOF_REGISTER == 8
6363                         else if (is_ref ||
6364                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6365                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6366                                  fsig->params [0]->type == MONO_TYPE_I) {
6367                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6368                                 f2i_opcode = OP_MOVE_F_TO_I8;
6369                                 i2f_opcode = OP_MOVE_I8_TO_F;
6370                         }
6371 #else
6372                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6373                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6374                                 cfg->has_atomic_exchange_i4 = TRUE;
6375                         }
6376 #endif
6377                         else
6378                                 return NULL;
6379
6380                         if (!mono_arch_opcode_supported (opcode))
6381                                 return NULL;
6382
6383                         if (is_float) {
6384                                 /* TODO: Decompose these opcodes instead of bailing here. */
6385                                 if (COMPILE_SOFT_FLOAT (cfg))
6386                                         return NULL;
6387
6388                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6389                                 f2i->dreg = mono_alloc_ireg (cfg);
6390                                 f2i->sreg1 = args [1]->dreg;
6391                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6392                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6393                                 MONO_ADD_INS (cfg->cbb, f2i);
6394                         }
6395
6396                         MONO_INST_NEW (cfg, ins, opcode);
6397                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6398                         ins->inst_basereg = args [0]->dreg;
6399                         ins->inst_offset = 0;
6400                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6401                         MONO_ADD_INS (cfg->cbb, ins);
6402
6403                         switch (fsig->params [0]->type) {
6404                         case MONO_TYPE_I4:
6405                                 ins->type = STACK_I4;
6406                                 break;
6407                         case MONO_TYPE_I8:
6408                                 ins->type = STACK_I8;
6409                                 break;
6410                         case MONO_TYPE_I:
6411 #if SIZEOF_REGISTER == 8
6412                                 ins->type = STACK_I8;
6413 #else
6414                                 ins->type = STACK_I4;
6415 #endif
6416                                 break;
6417                         case MONO_TYPE_R4:
6418                         case MONO_TYPE_R8:
6419                                 ins->type = STACK_R8;
6420                                 break;
6421                         default:
6422                                 g_assert (mini_type_is_reference (fsig->params [0]));
6423                                 ins->type = STACK_OBJ;
6424                                 break;
6425                         }
6426
6427                         if (is_float) {
6428                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6429                                 i2f->dreg = mono_alloc_freg (cfg);
6430                                 i2f->sreg1 = ins->dreg;
6431                                 i2f->type = STACK_R8;
6432                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6433                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6434                                 MONO_ADD_INS (cfg->cbb, i2f);
6435
6436                                 ins = i2f;
6437                         }
6438
6439                         if (cfg->gen_write_barriers && is_ref)
6440                                 emit_write_barrier (cfg, args [0], args [1]);
6441                 }
6442                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6443                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6444                         guint32 opcode, f2i_opcode, i2f_opcode;
6445                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6446                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6447
6448                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6449                             fsig->params [1]->type == MONO_TYPE_R4) {
6450                                 opcode = OP_ATOMIC_CAS_I4;
6451                                 f2i_opcode = OP_MOVE_F_TO_I4;
6452                                 i2f_opcode = OP_MOVE_I4_TO_F;
6453                                 cfg->has_atomic_cas_i4 = TRUE;
6454                         }
6455 #if SIZEOF_REGISTER == 8
6456                         else if (is_ref ||
6457                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6458                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6459                                  fsig->params [1]->type == MONO_TYPE_I) {
6460                                 opcode = OP_ATOMIC_CAS_I8;
6461                                 f2i_opcode = OP_MOVE_F_TO_I8;
6462                                 i2f_opcode = OP_MOVE_I8_TO_F;
6463                         }
6464 #else
6465                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6466                                 opcode = OP_ATOMIC_CAS_I4;
6467                                 cfg->has_atomic_cas_i4 = TRUE;
6468                         }
6469 #endif
6470                         else
6471                                 return NULL;
6472
6473                         if (!mono_arch_opcode_supported (opcode))
6474                                 return NULL;
6475
6476                         if (is_float) {
6477                                 /* TODO: Decompose these opcodes instead of bailing here. */
6478                                 if (COMPILE_SOFT_FLOAT (cfg))
6479                                         return NULL;
6480
6481                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6482                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6483                                 f2i_new->sreg1 = args [1]->dreg;
6484                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6485                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6486                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6487
6488                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6489                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6490                                 f2i_cmp->sreg1 = args [2]->dreg;
6491                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6492                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6493                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6494                         }
6495
6496                         MONO_INST_NEW (cfg, ins, opcode);
6497                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6498                         ins->sreg1 = args [0]->dreg;
6499                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6500                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6501                         MONO_ADD_INS (cfg->cbb, ins);
6502
6503                         switch (fsig->params [1]->type) {
6504                         case MONO_TYPE_I4:
6505                                 ins->type = STACK_I4;
6506                                 break;
6507                         case MONO_TYPE_I8:
6508                                 ins->type = STACK_I8;
6509                                 break;
6510                         case MONO_TYPE_I:
6511 #if SIZEOF_REGISTER == 8
6512                                 ins->type = STACK_I8;
6513 #else
6514                                 ins->type = STACK_I4;
6515 #endif
6516                                 break;
6517                         case MONO_TYPE_R4:
6518                                 ins->type = cfg->r4_stack_type;
6519                                 break;
6520                         case MONO_TYPE_R8:
6521                                 ins->type = STACK_R8;
6522                                 break;
6523                         default:
6524                                 g_assert (mini_type_is_reference (fsig->params [1]));
6525                                 ins->type = STACK_OBJ;
6526                                 break;
6527                         }
6528
6529                         if (is_float) {
6530                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6531                                 i2f->dreg = mono_alloc_freg (cfg);
6532                                 i2f->sreg1 = ins->dreg;
6533                                 i2f->type = STACK_R8;
6534                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6535                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6536                                 MONO_ADD_INS (cfg->cbb, i2f);
6537
6538                                 ins = i2f;
6539                         }
6540
6541                         if (cfg->gen_write_barriers && is_ref)
6542                                 emit_write_barrier (cfg, args [0], args [1]);
6543                 }
6544                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6545                          fsig->params [1]->type == MONO_TYPE_I4) {
6546                         MonoInst *cmp, *ceq;
6547
6548                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6549                                 return NULL;
6550
6551                         /* int32 r = CAS (location, value, comparand); */
6552                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6553                         ins->dreg = alloc_ireg (cfg);
6554                         ins->sreg1 = args [0]->dreg;
6555                         ins->sreg2 = args [1]->dreg;
6556                         ins->sreg3 = args [2]->dreg;
6557                         ins->type = STACK_I4;
6558                         MONO_ADD_INS (cfg->cbb, ins);
6559
6560                         /* bool result = r == comparand; */
6561                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6562                         cmp->sreg1 = ins->dreg;
6563                         cmp->sreg2 = args [2]->dreg;
6564                         cmp->type = STACK_I4;
6565                         MONO_ADD_INS (cfg->cbb, cmp);
6566
6567                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6568                         ceq->dreg = alloc_ireg (cfg);
6569                         ceq->type = STACK_I4;
6570                         MONO_ADD_INS (cfg->cbb, ceq);
6571
6572                         /* *success = result; */
6573                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6574
6575                         cfg->has_atomic_cas_i4 = TRUE;
6576                 }
6577                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6578                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6579
6580                 if (ins)
6581                         return ins;
6582         } else if (cmethod->klass->image == mono_defaults.corlib &&
6583                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6584                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6585                 ins = NULL;
6586
6587                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6588                         guint32 opcode = 0;
6589                         MonoType *t = fsig->params [0];
6590                         gboolean is_ref;
6591                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6592
6593                         g_assert (t->byref);
6594                         /* t is a byref type, so the reference check is more complicated */
6595                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6596                         if (t->type == MONO_TYPE_I1)
6597                                 opcode = OP_ATOMIC_LOAD_I1;
6598                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6599                                 opcode = OP_ATOMIC_LOAD_U1;
6600                         else if (t->type == MONO_TYPE_I2)
6601                                 opcode = OP_ATOMIC_LOAD_I2;
6602                         else if (t->type == MONO_TYPE_U2)
6603                                 opcode = OP_ATOMIC_LOAD_U2;
6604                         else if (t->type == MONO_TYPE_I4)
6605                                 opcode = OP_ATOMIC_LOAD_I4;
6606                         else if (t->type == MONO_TYPE_U4)
6607                                 opcode = OP_ATOMIC_LOAD_U4;
6608                         else if (t->type == MONO_TYPE_R4)
6609                                 opcode = OP_ATOMIC_LOAD_R4;
6610                         else if (t->type == MONO_TYPE_R8)
6611                                 opcode = OP_ATOMIC_LOAD_R8;
6612 #if SIZEOF_REGISTER == 8
6613                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6614                                 opcode = OP_ATOMIC_LOAD_I8;
6615                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6616                                 opcode = OP_ATOMIC_LOAD_U8;
6617 #else
6618                         else if (t->type == MONO_TYPE_I)
6619                                 opcode = OP_ATOMIC_LOAD_I4;
6620                         else if (is_ref || t->type == MONO_TYPE_U)
6621                                 opcode = OP_ATOMIC_LOAD_U4;
6622 #endif
6623
6624                         if (opcode) {
6625                                 if (!mono_arch_opcode_supported (opcode))
6626                                         return NULL;
6627
6628                                 MONO_INST_NEW (cfg, ins, opcode);
6629                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6630                                 ins->sreg1 = args [0]->dreg;
6631                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6632                                 MONO_ADD_INS (cfg->cbb, ins);
6633
6634                                 switch (t->type) {
6635                                 case MONO_TYPE_BOOLEAN:
6636                                 case MONO_TYPE_I1:
6637                                 case MONO_TYPE_U1:
6638                                 case MONO_TYPE_I2:
6639                                 case MONO_TYPE_U2:
6640                                 case MONO_TYPE_I4:
6641                                 case MONO_TYPE_U4:
6642                                         ins->type = STACK_I4;
6643                                         break;
6644                                 case MONO_TYPE_I8:
6645                                 case MONO_TYPE_U8:
6646                                         ins->type = STACK_I8;
6647                                         break;
6648                                 case MONO_TYPE_I:
6649                                 case MONO_TYPE_U:
6650 #if SIZEOF_REGISTER == 8
6651                                         ins->type = STACK_I8;
6652 #else
6653                                         ins->type = STACK_I4;
6654 #endif
6655                                         break;
6656                                 case MONO_TYPE_R4:
6657                                         ins->type = cfg->r4_stack_type;
6658                                         break;
6659                                 case MONO_TYPE_R8:
6660                                         ins->type = STACK_R8;
6661                                         break;
6662                                 default:
6663                                         g_assert (is_ref);
6664                                         ins->type = STACK_OBJ;
6665                                         break;
6666                                 }
6667                         }
6668                 }
6669
6670                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6671                         guint32 opcode = 0;
6672                         MonoType *t = fsig->params [0];
6673                         gboolean is_ref;
6674
6675                         g_assert (t->byref);
6676                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6677                         if (t->type == MONO_TYPE_I1)
6678                                 opcode = OP_ATOMIC_STORE_I1;
6679                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6680                                 opcode = OP_ATOMIC_STORE_U1;
6681                         else if (t->type == MONO_TYPE_I2)
6682                                 opcode = OP_ATOMIC_STORE_I2;
6683                         else if (t->type == MONO_TYPE_U2)
6684                                 opcode = OP_ATOMIC_STORE_U2;
6685                         else if (t->type == MONO_TYPE_I4)
6686                                 opcode = OP_ATOMIC_STORE_I4;
6687                         else if (t->type == MONO_TYPE_U4)
6688                                 opcode = OP_ATOMIC_STORE_U4;
6689                         else if (t->type == MONO_TYPE_R4)
6690                                 opcode = OP_ATOMIC_STORE_R4;
6691                         else if (t->type == MONO_TYPE_R8)
6692                                 opcode = OP_ATOMIC_STORE_R8;
6693 #if SIZEOF_REGISTER == 8
6694                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6695                                 opcode = OP_ATOMIC_STORE_I8;
6696                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6697                                 opcode = OP_ATOMIC_STORE_U8;
6698 #else
6699                         else if (t->type == MONO_TYPE_I)
6700                                 opcode = OP_ATOMIC_STORE_I4;
6701                         else if (is_ref || t->type == MONO_TYPE_U)
6702                                 opcode = OP_ATOMIC_STORE_U4;
6703 #endif
6704
6705                         if (opcode) {
6706                                 if (!mono_arch_opcode_supported (opcode))
6707                                         return NULL;
6708
6709                                 MONO_INST_NEW (cfg, ins, opcode);
6710                                 ins->dreg = args [0]->dreg;
6711                                 ins->sreg1 = args [1]->dreg;
6712                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6713                                 MONO_ADD_INS (cfg->cbb, ins);
6714
6715                                 if (cfg->gen_write_barriers && is_ref)
6716                                         emit_write_barrier (cfg, args [0], args [1]);
6717                         }
6718                 }
6719
6720                 if (ins)
6721                         return ins;
6722         } else if (cmethod->klass->image == mono_defaults.corlib &&
6723                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6724                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6725                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6726                         if (should_insert_brekpoint (cfg->method)) {
6727                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6728                         } else {
6729                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6730                                 MONO_ADD_INS (cfg->cbb, ins);
6731                         }
6732                         return ins;
6733                 }
6734         } else if (cmethod->klass->image == mono_defaults.corlib &&
6735                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6736                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6737                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6738 #ifdef TARGET_WIN32
6739                         EMIT_NEW_ICONST (cfg, ins, 1);
6740 #else
6741                         EMIT_NEW_ICONST (cfg, ins, 0);
6742 #endif
6743                 }
6744         } else if (cmethod->klass->image == mono_defaults.corlib &&
6745                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6746                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6747                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6748                         /* No stack walks are currently available, so implement this as an intrinsic */
6749                         MonoInst *assembly_ins;
6750
6751                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6752                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6753                         return ins;
6754                 }
6755         } else if (cmethod->klass->image == mono_defaults.corlib &&
6756                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6757                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6758                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6759                         /* No stack walks are currently available, so implement this as an intrinsic */
6760                         MonoInst *method_ins;
6761                         MonoMethod *declaring = cfg->method;
6762
6763                         /* This returns the declaring generic method */
6764                         if (declaring->is_inflated)
6765                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6766                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6767                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6768                         cfg->no_inline = TRUE;
6769                         if (cfg->method != cfg->current_method)
6770                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6771                         return ins;
6772                 }
6773         } else if (cmethod->klass == mono_defaults.math_class) {
6774                 /*
6775                  * There is general branchless code for Min/Max, but it does not work for
6776                  * all inputs:
6777                  * http://everything2.com/?node_id=1051618
6778                  */
6779         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6780                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6781                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6782                                 !strcmp (cmethod->klass->name, "Selector")) ||
6783                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6784                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6785                                 !strcmp (cmethod->klass->name, "Selector"))
6786                            ) {
6787                 if (cfg->backend->have_objc_get_selector &&
6788                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6789                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6790                     cfg->compile_aot && !cfg->llvm_only) {
6791                         MonoInst *pi;
6792                         MonoJumpInfoToken *ji;
6793                         char *s;
6794
6795                         // FIXME: llvmonly
6796
6797                         cfg->exception_message = g_strdup ("GetHandle");
6798                         cfg->disable_llvm = TRUE;
6799
6800                         if (args [0]->opcode == OP_GOT_ENTRY) {
6801                                 pi = (MonoInst *)args [0]->inst_p1;
6802                                 g_assert (pi->opcode == OP_PATCH_INFO);
6803                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6804                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6805                         } else {
6806                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6807                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6808                         }
6809
6810                         NULLIFY_INS (args [0]);
6811
6812                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6813                         return_val_if_nok (&cfg->error, NULL);
6814
6815                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6816                         ins->dreg = mono_alloc_ireg (cfg);
6817                         // FIXME: Leaks
6818                         ins->inst_p0 = s;
6819                         MONO_ADD_INS (cfg->cbb, ins);
6820                         return ins;
6821                 }
6822         }
6823
6824 #ifdef MONO_ARCH_SIMD_INTRINSICS
6825         if (cfg->opt & MONO_OPT_SIMD) {
6826                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6827                 if (ins)
6828                         return ins;
6829         }
6830 #endif
6831
6832         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6833         if (ins)
6834                 return ins;
6835
6836         if (COMPILE_LLVM (cfg)) {
6837                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6838                 if (ins)
6839                         return ins;
6840         }
6841
6842         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6843 }
6844
6845 /*
6846  * This entry point could be used later for arbitrary method
6847  * redirection.
6848  */
6849 inline static MonoInst*
6850 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6851                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6852 {
6853         if (method->klass == mono_defaults.string_class) {
6854                 /* managed string allocation support */
6855                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6856                         MonoInst *iargs [2];
6857                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6858                         MonoMethod *managed_alloc = NULL;
6859
6860                         g_assert (vtable); /*Should not fail since it System.String*/
6861 #ifndef MONO_CROSS_COMPILE
6862                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6863 #endif
6864                         if (!managed_alloc)
6865                                 return NULL;
6866                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6867                         iargs [1] = args [0];
6868                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6869                 }
6870         }
6871         return NULL;
6872 }
6873
6874 static void
6875 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6876 {
6877         MonoInst *store, *temp;
6878         int i;
6879
6880         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6881                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6882
6883                 /*
6884                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6885                  * would be different than the MonoInst's used to represent arguments, and
6886                  * the ldelema implementation can't deal with that.
6887                  * Solution: When ldelema is used on an inline argument, create a var for
6888                  * it, emit ldelema on that var, and emit the saving code below in
6889                  * inline_method () if needed.
6890                  */
6891                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6892                 cfg->args [i] = temp;
6893                 /* This uses cfg->args [i] which is set by the preceeding line */
6894                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6895                 store->cil_code = sp [0]->cil_code;
6896                 sp++;
6897         }
6898 }
6899
6900 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6901 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6902
6903 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6904 static gboolean
6905 check_inline_called_method_name_limit (MonoMethod *called_method)
6906 {
6907         int strncmp_result;
6908         static const char *limit = NULL;
6909
6910         if (limit == NULL) {
6911                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6912
6913                 if (limit_string != NULL)
6914                         limit = limit_string;
6915                 else
6916                         limit = "";
6917         }
6918
6919         if (limit [0] != '\0') {
6920                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6921
6922                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6923                 g_free (called_method_name);
6924
6925                 //return (strncmp_result <= 0);
6926                 return (strncmp_result == 0);
6927         } else {
6928                 return TRUE;
6929         }
6930 }
6931 #endif
6932
6933 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6934 static gboolean
6935 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6936 {
6937         int strncmp_result;
6938         static const char *limit = NULL;
6939
6940         if (limit == NULL) {
6941                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6942                 if (limit_string != NULL) {
6943                         limit = limit_string;
6944                 } else {
6945                         limit = "";
6946                 }
6947         }
6948
6949         if (limit [0] != '\0') {
6950                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6951
6952                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6953                 g_free (caller_method_name);
6954
6955                 //return (strncmp_result <= 0);
6956                 return (strncmp_result == 0);
6957         } else {
6958                 return TRUE;
6959         }
6960 }
6961 #endif
6962
6963 static void
6964 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6965 {
6966         static double r8_0 = 0.0;
6967         static float r4_0 = 0.0;
6968         MonoInst *ins;
6969         int t;
6970
6971         rtype = mini_get_underlying_type (rtype);
6972         t = rtype->type;
6973
6974         if (rtype->byref) {
6975                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6976         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6977                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6978         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6979                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6980         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6981                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6982                 ins->type = STACK_R4;
6983                 ins->inst_p0 = (void*)&r4_0;
6984                 ins->dreg = dreg;
6985                 MONO_ADD_INS (cfg->cbb, ins);
6986         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
6987                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
6988                 ins->type = STACK_R8;
6989                 ins->inst_p0 = (void*)&r8_0;
6990                 ins->dreg = dreg;
6991                 MONO_ADD_INS (cfg->cbb, ins);
6992         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
6993                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
6994                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6995         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
6996                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
6997         } else {
6998                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6999         }
7000 }
7001
7002 static void
7003 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7004 {
7005         int t;
7006
7007         rtype = mini_get_underlying_type (rtype);
7008         t = rtype->type;
7009
7010         if (rtype->byref) {
7011                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7012         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7013                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7014         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7015                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7016         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7017                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7018         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7019                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7020         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7021                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7022                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7023         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7024                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7025         } else {
7026                 emit_init_rvar (cfg, dreg, rtype);
7027         }
7028 }
7029
7030 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7031 static void
7032 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7033 {
7034         MonoInst *var = cfg->locals [local];
7035         if (COMPILE_SOFT_FLOAT (cfg)) {
7036                 MonoInst *store;
7037                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7038                 emit_init_rvar (cfg, reg, type);
7039                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7040         } else {
7041                 if (init)
7042                         emit_init_rvar (cfg, var->dreg, type);
7043                 else
7044                         emit_dummy_init_rvar (cfg, var->dreg, type);
7045         }
7046 }
7047
7048 /*
7049  * inline_method:
7050  *
7051  *   Return the cost of inlining CMETHOD.
7052  */
7053 static int
7054 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7055                            guchar *ip, guint real_offset, gboolean inline_always)
7056 {
7057         MonoError error;
7058         MonoInst *ins, *rvar = NULL;
7059         MonoMethodHeader *cheader;
7060         MonoBasicBlock *ebblock, *sbblock;
7061         int i, costs;
7062         MonoMethod *prev_inlined_method;
7063         MonoInst **prev_locals, **prev_args;
7064         MonoType **prev_arg_types;
7065         guint prev_real_offset;
7066         GHashTable *prev_cbb_hash;
7067         MonoBasicBlock **prev_cil_offset_to_bb;
7068         MonoBasicBlock *prev_cbb;
7069         unsigned char* prev_cil_start;
7070         guint32 prev_cil_offset_to_bb_len;
7071         MonoMethod *prev_current_method;
7072         MonoGenericContext *prev_generic_context;
7073         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7074
7075         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7076
7077 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7078         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7079                 return 0;
7080 #endif
7081 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7082         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7083                 return 0;
7084 #endif
7085
7086         if (!fsig)
7087                 fsig = mono_method_signature (cmethod);
7088
7089         if (cfg->verbose_level > 2)
7090                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7091
7092         if (!cmethod->inline_info) {
7093                 cfg->stat_inlineable_methods++;
7094                 cmethod->inline_info = 1;
7095         }
7096
7097         /* allocate local variables */
7098         cheader = mono_method_get_header_checked (cmethod, &error);
7099         if (!cheader) {
7100                 if (inline_always) {
7101                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7102                         mono_error_move (&cfg->error, &error);
7103                 } else {
7104                         mono_error_cleanup (&error);
7105                 }
7106                 return 0;
7107         }
7108
7109         /*Must verify before creating locals as it can cause the JIT to assert.*/
7110         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7111                 mono_metadata_free_mh (cheader);
7112                 return 0;
7113         }
7114
7115         /* allocate space to store the return value */
7116         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7117                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7118         }
7119
7120         prev_locals = cfg->locals;
7121         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7122         for (i = 0; i < cheader->num_locals; ++i)
7123                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7124
7125         /* allocate start and end blocks */
7126         /* This is needed so if the inline is aborted, we can clean up */
7127         NEW_BBLOCK (cfg, sbblock);
7128         sbblock->real_offset = real_offset;
7129
7130         NEW_BBLOCK (cfg, ebblock);
7131         ebblock->block_num = cfg->num_bblocks++;
7132         ebblock->real_offset = real_offset;
7133
7134         prev_args = cfg->args;
7135         prev_arg_types = cfg->arg_types;
7136         prev_inlined_method = cfg->inlined_method;
7137         cfg->inlined_method = cmethod;
7138         cfg->ret_var_set = FALSE;
7139         cfg->inline_depth ++;
7140         prev_real_offset = cfg->real_offset;
7141         prev_cbb_hash = cfg->cbb_hash;
7142         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7143         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7144         prev_cil_start = cfg->cil_start;
7145         prev_cbb = cfg->cbb;
7146         prev_current_method = cfg->current_method;
7147         prev_generic_context = cfg->generic_context;
7148         prev_ret_var_set = cfg->ret_var_set;
7149         prev_disable_inline = cfg->disable_inline;
7150
7151         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7152                 virtual_ = TRUE;
7153
7154         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7155
7156         ret_var_set = cfg->ret_var_set;
7157
7158         cfg->inlined_method = prev_inlined_method;
7159         cfg->real_offset = prev_real_offset;
7160         cfg->cbb_hash = prev_cbb_hash;
7161         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7162         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7163         cfg->cil_start = prev_cil_start;
7164         cfg->locals = prev_locals;
7165         cfg->args = prev_args;
7166         cfg->arg_types = prev_arg_types;
7167         cfg->current_method = prev_current_method;
7168         cfg->generic_context = prev_generic_context;
7169         cfg->ret_var_set = prev_ret_var_set;
7170         cfg->disable_inline = prev_disable_inline;
7171         cfg->inline_depth --;
7172
7173         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7174                 if (cfg->verbose_level > 2)
7175                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7176
7177                 cfg->stat_inlined_methods++;
7178
7179                 /* always add some code to avoid block split failures */
7180                 MONO_INST_NEW (cfg, ins, OP_NOP);
7181                 MONO_ADD_INS (prev_cbb, ins);
7182
7183                 prev_cbb->next_bb = sbblock;
7184                 link_bblock (cfg, prev_cbb, sbblock);
7185
7186                 /*
7187                  * Get rid of the begin and end bblocks if possible to aid local
7188                  * optimizations.
7189                  */
7190                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7191
7192                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7193                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7194
7195                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7196                         MonoBasicBlock *prev = ebblock->in_bb [0];
7197
7198                         if (prev->next_bb == ebblock) {
7199                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7200                                 cfg->cbb = prev;
7201                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7202                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7203                                         cfg->cbb = prev_cbb;
7204                                 }
7205                         } else {
7206                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7207                                 cfg->cbb = ebblock;
7208                         }
7209                 } else {
7210                         /*
7211                          * Its possible that the rvar is set in some prev bblock, but not in others.
7212                          * (#1835).
7213                          */
7214                         if (rvar) {
7215                                 MonoBasicBlock *bb;
7216
7217                                 for (i = 0; i < ebblock->in_count; ++i) {
7218                                         bb = ebblock->in_bb [i];
7219
7220                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7221                                                 cfg->cbb = bb;
7222
7223                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7224                                         }
7225                                 }
7226                         }
7227
7228                         cfg->cbb = ebblock;
7229                 }
7230
7231                 if (rvar) {
7232                         /*
7233                          * If the inlined method contains only a throw, then the ret var is not
7234                          * set, so set it to a dummy value.
7235                          */
7236                         if (!ret_var_set)
7237                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7238
7239                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7240                         *sp++ = ins;
7241                 }
7242                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7243                 return costs + 1;
7244         } else {
7245                 if (cfg->verbose_level > 2)
7246                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7247                 cfg->exception_type = MONO_EXCEPTION_NONE;
7248
7249                 /* This gets rid of the newly added bblocks */
7250                 cfg->cbb = prev_cbb;
7251         }
7252         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7253         return 0;
7254 }
7255
7256 /*
7257  * Some of these comments may well be out-of-date.
7258  * Design decisions: we do a single pass over the IL code (and we do bblock
7259  * splitting/merging in the few cases when it's required: a back jump to an IL
7260  * address that was not already seen as bblock starting point).
7261  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7262  * Complex operations are decomposed in simpler ones right away. We need to let the
7263  * arch-specific code peek and poke inside this process somehow (except when the
7264  * optimizations can take advantage of the full semantic info of coarse opcodes).
7265  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7266  * MonoInst->opcode initially is the IL opcode or some simplification of that
7267  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7268  * opcode with value bigger than OP_LAST.
7269  * At this point the IR can be handed over to an interpreter, a dumb code generator
7270  * or to the optimizing code generator that will translate it to SSA form.
7271  *
7272  * Profiling directed optimizations.
7273  * We may compile by default with few or no optimizations and instrument the code
7274  * or the user may indicate what methods to optimize the most either in a config file
7275  * or through repeated runs where the compiler applies offline the optimizations to
7276  * each method and then decides if it was worth it.
7277  */
7278
7279 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7280 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7281 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7282 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7283 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7284 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7285 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7286 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7287
7288 /* offset from br.s -> br like opcodes */
7289 #define BIG_BRANCH_OFFSET 13
7290
7291 static gboolean
7292 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7293 {
7294         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7295
7296         return b == NULL || b == bb;
7297 }
7298
7299 static int
7300 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7301 {
7302         unsigned char *ip = start;
7303         unsigned char *target;
7304         int i;
7305         guint cli_addr;
7306         MonoBasicBlock *bblock;
7307         const MonoOpcode *opcode;
7308
7309         while (ip < end) {
7310                 cli_addr = ip - start;
7311                 i = mono_opcode_value ((const guint8 **)&ip, end);
7312                 if (i < 0)
7313                         UNVERIFIED;
7314                 opcode = &mono_opcodes [i];
7315                 switch (opcode->argument) {
7316                 case MonoInlineNone:
7317                         ip++;
7318                         break;
7319                 case MonoInlineString:
7320                 case MonoInlineType:
7321                 case MonoInlineField:
7322                 case MonoInlineMethod:
7323                 case MonoInlineTok:
7324                 case MonoInlineSig:
7325                 case MonoShortInlineR:
7326                 case MonoInlineI:
7327                         ip += 5;
7328                         break;
7329                 case MonoInlineVar:
7330                         ip += 3;
7331                         break;
7332                 case MonoShortInlineVar:
7333                 case MonoShortInlineI:
7334                         ip += 2;
7335                         break;
7336                 case MonoShortInlineBrTarget:
7337                         target = start + cli_addr + 2 + (signed char)ip [1];
7338                         GET_BBLOCK (cfg, bblock, target);
7339                         ip += 2;
7340                         if (ip < end)
7341                                 GET_BBLOCK (cfg, bblock, ip);
7342                         break;
7343                 case MonoInlineBrTarget:
7344                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7345                         GET_BBLOCK (cfg, bblock, target);
7346                         ip += 5;
7347                         if (ip < end)
7348                                 GET_BBLOCK (cfg, bblock, ip);
7349                         break;
7350                 case MonoInlineSwitch: {
7351                         guint32 n = read32 (ip + 1);
7352                         guint32 j;
7353                         ip += 5;
7354                         cli_addr += 5 + 4 * n;
7355                         target = start + cli_addr;
7356                         GET_BBLOCK (cfg, bblock, target);
7357
7358                         for (j = 0; j < n; ++j) {
7359                                 target = start + cli_addr + (gint32)read32 (ip);
7360                                 GET_BBLOCK (cfg, bblock, target);
7361                                 ip += 4;
7362                         }
7363                         break;
7364                 }
7365                 case MonoInlineR:
7366                 case MonoInlineI8:
7367                         ip += 9;
7368                         break;
7369                 default:
7370                         g_assert_not_reached ();
7371                 }
7372
7373                 if (i == CEE_THROW) {
7374                         unsigned char *bb_start = ip - 1;
7375
7376                         /* Find the start of the bblock containing the throw */
7377                         bblock = NULL;
7378                         while ((bb_start >= start) && !bblock) {
7379                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7380                                 bb_start --;
7381                         }
7382                         if (bblock)
7383                                 bblock->out_of_line = 1;
7384                 }
7385         }
7386         return 0;
7387 unverified:
7388 exception_exit:
7389         *pos = ip;
7390         return 1;
7391 }
7392
7393 static inline MonoMethod *
7394 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7395 {
7396         MonoMethod *method;
7397
7398         mono_error_init (error);
7399
7400         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7401                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7402                 if (context) {
7403                         method = mono_class_inflate_generic_method_checked (method, context, error);
7404                 }
7405         } else {
7406                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7407         }
7408
7409         return method;
7410 }
7411
7412 static inline MonoMethod *
7413 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7414 {
7415         MonoError error;
7416         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7417
7418         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7419                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7420                 method = NULL;
7421         }
7422
7423         if (!method && !cfg)
7424                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7425
7426         return method;
7427 }
7428
7429 static inline MonoClass*
7430 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7431 {
7432         MonoError error;
7433         MonoClass *klass;
7434
7435         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7436                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7437                 if (context) {
7438                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7439                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7440                 }
7441         } else {
7442                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7443                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7444         }
7445         if (klass)
7446                 mono_class_init (klass);
7447         return klass;
7448 }
7449
7450 static inline MonoMethodSignature*
7451 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7452 {
7453         MonoMethodSignature *fsig;
7454
7455         mono_error_init (error);
7456         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7457                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7458         } else {
7459                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7460                 return_val_if_nok (error, NULL);
7461         }
7462         if (context) {
7463                 fsig = mono_inflate_generic_signature(fsig, context, error);
7464         }
7465         return fsig;
7466 }
7467
7468 static MonoMethod*
7469 throw_exception (void)
7470 {
7471         static MonoMethod *method = NULL;
7472
7473         if (!method) {
7474                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7475                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7476         }
7477         g_assert (method);
7478         return method;
7479 }
7480
7481 static void
7482 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7483 {
7484         MonoMethod *thrower = throw_exception ();
7485         MonoInst *args [1];
7486
7487         EMIT_NEW_PCONST (cfg, args [0], ex);
7488         mono_emit_method_call (cfg, thrower, args, NULL);
7489 }
7490
7491 /*
7492  * Return the original method is a wrapper is specified. We can only access
7493  * the custom attributes from the original method.
7494  */
7495 static MonoMethod*
7496 get_original_method (MonoMethod *method)
7497 {
7498         if (method->wrapper_type == MONO_WRAPPER_NONE)
7499                 return method;
7500
7501         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7502         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7503                 return NULL;
7504
7505         /* in other cases we need to find the original method */
7506         return mono_marshal_method_from_wrapper (method);
7507 }
7508
7509 static void
7510 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7511 {
7512         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7513         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7514         if (ex)
7515                 emit_throw_exception (cfg, ex);
7516 }
7517
7518 static void
7519 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7520 {
7521         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7522         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7523         if (ex)
7524                 emit_throw_exception (cfg, ex);
7525 }
7526
7527 /*
7528  * Check that the IL instructions at ip are the array initialization
7529  * sequence and return the pointer to the data and the size.
7530  */
7531 static const char*
7532 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7533 {
7534         /*
7535          * newarr[System.Int32]
7536          * dup
7537          * ldtoken field valuetype ...
7538          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7539          */
7540         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7541                 MonoError error;
7542                 guint32 token = read32 (ip + 7);
7543                 guint32 field_token = read32 (ip + 2);
7544                 guint32 field_index = field_token & 0xffffff;
7545                 guint32 rva;
7546                 const char *data_ptr;
7547                 int size = 0;
7548                 MonoMethod *cmethod;
7549                 MonoClass *dummy_class;
7550                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7551                 int dummy_align;
7552
7553                 if (!field) {
7554                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7555                         return NULL;
7556                 }
7557
7558                 *out_field_token = field_token;
7559
7560                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7561                 if (!cmethod)
7562                         return NULL;
7563                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7564                         return NULL;
7565                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7566                 case MONO_TYPE_BOOLEAN:
7567                 case MONO_TYPE_I1:
7568                 case MONO_TYPE_U1:
7569                         size = 1; break;
7570                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7571 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7572                 case MONO_TYPE_CHAR:
7573                 case MONO_TYPE_I2:
7574                 case MONO_TYPE_U2:
7575                         size = 2; break;
7576                 case MONO_TYPE_I4:
7577                 case MONO_TYPE_U4:
7578                 case MONO_TYPE_R4:
7579                         size = 4; break;
7580                 case MONO_TYPE_R8:
7581                 case MONO_TYPE_I8:
7582                 case MONO_TYPE_U8:
7583                         size = 8; break;
7584 #endif
7585                 default:
7586                         return NULL;
7587                 }
7588                 size *= len;
7589                 if (size > mono_type_size (field->type, &dummy_align))
7590                     return NULL;
7591                 *out_size = size;
7592                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7593                 if (!image_is_dynamic (method->klass->image)) {
7594                         field_index = read32 (ip + 2) & 0xffffff;
7595                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7596                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7597                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7598                         /* for aot code we do the lookup on load */
7599                         if (aot && data_ptr)
7600                                 return (const char *)GUINT_TO_POINTER (rva);
7601                 } else {
7602                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7603                         g_assert (!aot);
7604                         data_ptr = mono_field_get_data (field);
7605                 }
7606                 return data_ptr;
7607         }
7608         return NULL;
7609 }
7610
7611 static void
7612 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7613 {
7614         MonoError error;
7615         char *method_fname = mono_method_full_name (method, TRUE);
7616         char *method_code;
7617         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7618
7619         if (!header) {
7620                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7621                 mono_error_cleanup (&error);
7622         } else if (header->code_size == 0)
7623                 method_code = g_strdup ("method body is empty.");
7624         else
7625                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7626         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7627         g_free (method_fname);
7628         g_free (method_code);
7629         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7630 }
7631
7632 static void
7633 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7634 {
7635         MonoInst *ins;
7636         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7637         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7638                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7639                 /* Optimize reg-reg moves away */
7640                 /*
7641                  * Can't optimize other opcodes, since sp[0] might point to
7642                  * the last ins of a decomposed opcode.
7643                  */
7644                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7645         } else {
7646                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7647         }
7648 }
7649
7650 /*
7651  * ldloca inhibits many optimizations so try to get rid of it in common
7652  * cases.
7653  */
7654 static inline unsigned char *
7655 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7656 {
7657         int local, token;
7658         MonoClass *klass;
7659         MonoType *type;
7660
7661         if (size == 1) {
7662                 local = ip [1];
7663                 ip += 2;
7664         } else {
7665                 local = read16 (ip + 2);
7666                 ip += 4;
7667         }
7668
7669         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7670                 /* From the INITOBJ case */
7671                 token = read32 (ip + 2);
7672                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7673                 CHECK_TYPELOAD (klass);
7674                 type = mini_get_underlying_type (&klass->byval_arg);
7675                 emit_init_local (cfg, local, type, TRUE);
7676                 return ip + 6;
7677         }
7678  exception_exit:
7679         return NULL;
7680 }
7681
7682 static MonoInst*
7683 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7684 {
7685         MonoInst *icall_args [16];
7686         MonoInst *call_target, *ins, *vtable_ins;
7687         int arg_reg, this_reg, vtable_reg;
7688         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7689         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7690         gboolean variant_iface = FALSE;
7691         guint32 slot;
7692         int offset;
7693
7694         /*
7695          * In llvm-only mode, vtables contain function descriptors instead of
7696          * method addresses/trampolines.
7697          */
7698         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7699
7700         if (is_iface)
7701                 slot = mono_method_get_imt_slot (cmethod);
7702         else
7703                 slot = mono_method_get_vtable_index (cmethod);
7704
7705         this_reg = sp [0]->dreg;
7706
7707         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7708                 variant_iface = TRUE;
7709
7710         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7711                 /*
7712                  * The simplest case, a normal virtual call.
7713                  */
7714                 int slot_reg = alloc_preg (cfg);
7715                 int addr_reg = alloc_preg (cfg);
7716                 int arg_reg = alloc_preg (cfg);
7717                 MonoBasicBlock *non_null_bb;
7718
7719                 vtable_reg = alloc_preg (cfg);
7720                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7721                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7722
7723                 /* Load the vtable slot, which contains a function descriptor. */
7724                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7725
7726                 NEW_BBLOCK (cfg, non_null_bb);
7727
7728                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7729                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7730                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7731
7732                 /* Slow path */
7733                 // FIXME: Make the wrapper use the preserveall cconv
7734                 // FIXME: Use one icall per slot for small slot numbers ?
7735                 icall_args [0] = vtable_ins;
7736                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7737                 /* Make the icall return the vtable slot value to save some code space */
7738                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7739                 ins->dreg = slot_reg;
7740                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7741
7742                 /* Fastpath */
7743                 MONO_START_BB (cfg, non_null_bb);
7744                 /* Load the address + arg from the vtable slot */
7745                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7746                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7747
7748                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7749         }
7750
7751         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7752                 /*
7753                  * A simple interface call
7754                  *
7755                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7756                  * The imt slot contains a function descriptor for a runtime function + arg.
7757                  */
7758                 int slot_reg = alloc_preg (cfg);
7759                 int addr_reg = alloc_preg (cfg);
7760                 int arg_reg = alloc_preg (cfg);
7761                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7762
7763                 vtable_reg = alloc_preg (cfg);
7764                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7765                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7766
7767                 /*
7768                  * The slot is already initialized when the vtable is created so there is no need
7769                  * to check it here.
7770                  */
7771
7772                 /* Load the imt slot, which contains a function descriptor. */
7773                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7774
7775                 /* Load the address + arg of the imt thunk from the imt slot */
7776                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7777                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7778                 /*
7779                  * IMT thunks in llvm-only mode are C functions which take an info argument
7780                  * plus the imt method and return the ftndesc to call.
7781                  */
7782                 icall_args [0] = thunk_arg_ins;
7783                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7784                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7785                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7786
7787                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7788         }
7789
7790         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7791                 /*
7792                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7793                  * dynamically extended as more instantiations are discovered.
7794                  * This handles generic virtual methods both on classes and interfaces.
7795                  */
7796                 int slot_reg = alloc_preg (cfg);
7797                 int addr_reg = alloc_preg (cfg);
7798                 int arg_reg = alloc_preg (cfg);
7799                 int ftndesc_reg = alloc_preg (cfg);
7800                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7801                 MonoBasicBlock *slowpath_bb, *end_bb;
7802
7803                 NEW_BBLOCK (cfg, slowpath_bb);
7804                 NEW_BBLOCK (cfg, end_bb);
7805
7806                 vtable_reg = alloc_preg (cfg);
7807                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7808                 if (is_iface)
7809                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7810                 else
7811                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7812
7813                 /* Load the slot, which contains a function descriptor. */
7814                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7815
7816                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7817                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7818                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7819                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7820
7821                 /* Fastpath */
7822                 /* Same as with iface calls */
7823                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7824                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7825                 icall_args [0] = thunk_arg_ins;
7826                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7827                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7828                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7829                 ftndesc_ins->dreg = ftndesc_reg;
7830                 /*
7831                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7832                  * they don't know about yet. Fall back to the slowpath in that case.
7833                  */
7834                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7836
7837                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7838
7839                 /* Slowpath */
7840                 MONO_START_BB (cfg, slowpath_bb);
7841                 icall_args [0] = vtable_ins;
7842                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7843                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7844                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7845                 if (is_iface)
7846                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7847                 else
7848                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7849                 ftndesc_ins->dreg = ftndesc_reg;
7850                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7851
7852                 /* Common case */
7853                 MONO_START_BB (cfg, end_bb);
7854                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7855         }
7856
7857         /*
7858          * Non-optimized cases
7859          */
7860         icall_args [0] = sp [0];
7861         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7862
7863         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7864                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7865
7866         arg_reg = alloc_preg (cfg);
7867         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7868         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7869
7870         g_assert (is_gsharedvt);
7871         if (is_iface)
7872                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7873         else
7874                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7875
7876         /*
7877          * Pass the extra argument even if the callee doesn't receive it, most
7878          * calling conventions allow this.
7879          */
7880         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7881 }
7882
7883 static gboolean
7884 is_exception_class (MonoClass *klass)
7885 {
7886         while (klass) {
7887                 if (klass == mono_defaults.exception_class)
7888                         return TRUE;
7889                 klass = klass->parent;
7890         }
7891         return FALSE;
7892 }
7893
7894 /*
7895  * is_jit_optimizer_disabled:
7896  *
7897  *   Determine whenever M's assembly has a DebuggableAttribute with the
7898  * IsJITOptimizerDisabled flag set.
7899  */
7900 static gboolean
7901 is_jit_optimizer_disabled (MonoMethod *m)
7902 {
7903         MonoError error;
7904         MonoAssembly *ass = m->klass->image->assembly;
7905         MonoCustomAttrInfo* attrs;
7906         MonoClass *klass;
7907         int i;
7908         gboolean val = FALSE;
7909
7910         g_assert (ass);
7911         if (ass->jit_optimizer_disabled_inited)
7912                 return ass->jit_optimizer_disabled;
7913
7914         klass = mono_class_try_get_debuggable_attribute_class ();
7915
7916         if (!klass) {
7917                 /* Linked away */
7918                 ass->jit_optimizer_disabled = FALSE;
7919                 mono_memory_barrier ();
7920                 ass->jit_optimizer_disabled_inited = TRUE;
7921                 return FALSE;
7922         }
7923
7924         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7925         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7926         if (attrs) {
7927                 for (i = 0; i < attrs->num_attrs; ++i) {
7928                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7929                         const gchar *p;
7930                         MonoMethodSignature *sig;
7931
7932                         if (!attr->ctor || attr->ctor->klass != klass)
7933                                 continue;
7934                         /* Decode the attribute. See reflection.c */
7935                         p = (const char*)attr->data;
7936                         g_assert (read16 (p) == 0x0001);
7937                         p += 2;
7938
7939                         // FIXME: Support named parameters
7940                         sig = mono_method_signature (attr->ctor);
7941                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7942                                 continue;
7943                         /* Two boolean arguments */
7944                         p ++;
7945                         val = *p;
7946                 }
7947                 mono_custom_attrs_free (attrs);
7948         }
7949
7950         ass->jit_optimizer_disabled = val;
7951         mono_memory_barrier ();
7952         ass->jit_optimizer_disabled_inited = TRUE;
7953
7954         return val;
7955 }
7956
7957 static gboolean
7958 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7959 {
7960         gboolean supported_tail_call;
7961         int i;
7962
7963         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7964
7965         for (i = 0; i < fsig->param_count; ++i) {
7966                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7967                         /* These can point to the current method's stack */
7968                         supported_tail_call = FALSE;
7969         }
7970         if (fsig->hasthis && cmethod->klass->valuetype)
7971                 /* this might point to the current method's stack */
7972                 supported_tail_call = FALSE;
7973         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7974                 supported_tail_call = FALSE;
7975         if (cfg->method->save_lmf)
7976                 supported_tail_call = FALSE;
7977         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7978                 supported_tail_call = FALSE;
7979         if (call_opcode != CEE_CALL)
7980                 supported_tail_call = FALSE;
7981
7982         /* Debugging support */
7983 #if 0
7984         if (supported_tail_call) {
7985                 if (!mono_debug_count ())
7986                         supported_tail_call = FALSE;
7987         }
7988 #endif
7989
7990         return supported_tail_call;
7991 }
7992
7993 /*
7994  * handle_ctor_call:
7995  *
7996  *   Handle calls made to ctors from NEWOBJ opcodes.
7997  */
7998 static void
7999 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8000                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8001 {
8002         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8003
8004         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8005                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8006                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8007                         mono_class_vtable (cfg->domain, cmethod->klass);
8008                         CHECK_TYPELOAD (cmethod->klass);
8009
8010                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8011                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8012                 } else {
8013                         if (context_used) {
8014                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8015                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8016                         } else {
8017                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8018
8019                                 CHECK_TYPELOAD (cmethod->klass);
8020                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8021                         }
8022                 }
8023         }
8024
8025         /* Avoid virtual calls to ctors if possible */
8026         if (mono_class_is_marshalbyref (cmethod->klass))
8027                 callvirt_this_arg = sp [0];
8028
8029         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8030                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8031                 CHECK_CFG_EXCEPTION;
8032         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8033                            mono_method_check_inlining (cfg, cmethod) &&
8034                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8035                 int costs;
8036
8037                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8038                         cfg->real_offset += 5;
8039
8040                         *inline_costs += costs - 5;
8041                 } else {
8042                         INLINE_FAILURE ("inline failure");
8043                         // FIXME-VT: Clean this up
8044                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8045                                 GSHAREDVT_FAILURE(*ip);
8046                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8047                 }
8048         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8049                 MonoInst *addr;
8050
8051                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8052
8053                 if (cfg->llvm_only) {
8054                         // FIXME: Avoid initializing vtable_arg
8055                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8056                 } else {
8057                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8058                 }
8059         } else if (context_used &&
8060                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8061                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8062                 MonoInst *cmethod_addr;
8063
8064                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8065
8066                 if (cfg->llvm_only) {
8067                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8068                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8069                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8070                 } else {
8071                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8072                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8073
8074                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8075                 }
8076         } else {
8077                 INLINE_FAILURE ("ctor call");
8078                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8079                                                                                   callvirt_this_arg, NULL, vtable_arg);
8080         }
8081  exception_exit:
8082         return;
8083 }
8084
8085 static void
8086 emit_setret (MonoCompile *cfg, MonoInst *val)
8087 {
8088         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8089         MonoInst *ins;
8090
8091         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8092                 MonoInst *ret_addr;
8093
8094                 if (!cfg->vret_addr) {
8095                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8096                 } else {
8097                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8098
8099                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8100                         ins->klass = mono_class_from_mono_type (ret_type);
8101                 }
8102         } else {
8103 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8104                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8105                         MonoInst *iargs [1];
8106                         MonoInst *conv;
8107
8108                         iargs [0] = val;
8109                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8110                         mono_arch_emit_setret (cfg, cfg->method, conv);
8111                 } else {
8112                         mono_arch_emit_setret (cfg, cfg->method, val);
8113                 }
8114 #else
8115                 mono_arch_emit_setret (cfg, cfg->method, val);
8116 #endif
8117         }
8118 }
8119
8120 /*
8121  * mono_method_to_ir:
8122  *
8123  *   Translate the .net IL into linear IR.
8124  */
8125 int
8126 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8127                    MonoInst *return_var, MonoInst **inline_args,
8128                    guint inline_offset, gboolean is_virtual_call)
8129 {
8130         MonoError error;
8131         MonoInst *ins, **sp, **stack_start;
8132         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8133         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8134         MonoMethod *cmethod, *method_definition;
8135         MonoInst **arg_array;
8136         MonoMethodHeader *header;
8137         MonoImage *image;
8138         guint32 token, ins_flag;
8139         MonoClass *klass;
8140         MonoClass *constrained_class = NULL;
8141         unsigned char *ip, *end, *target, *err_pos;
8142         MonoMethodSignature *sig;
8143         MonoGenericContext *generic_context = NULL;
8144         MonoGenericContainer *generic_container = NULL;
8145         MonoType **param_types;
8146         int i, n, start_new_bblock, dreg;
8147         int num_calls = 0, inline_costs = 0;
8148         int breakpoint_id = 0;
8149         guint num_args;
8150         GSList *class_inits = NULL;
8151         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8152         int context_used;
8153         gboolean init_locals, seq_points, skip_dead_blocks;
8154         gboolean sym_seq_points = FALSE;
8155         MonoDebugMethodInfo *minfo;
8156         MonoBitSet *seq_point_locs = NULL;
8157         MonoBitSet *seq_point_set_locs = NULL;
8158
8159         cfg->disable_inline = is_jit_optimizer_disabled (method);
8160
8161         /* serialization and xdomain stuff may need access to private fields and methods */
8162         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8163         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8164         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8165         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8166         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8167         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8168
8169         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8170         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8171         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8172         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8173         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8174
8175         image = method->klass->image;
8176         header = mono_method_get_header_checked (method, &cfg->error);
8177         if (!header) {
8178                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8179                 goto exception_exit;
8180         }
8181         generic_container = mono_method_get_generic_container (method);
8182         sig = mono_method_signature (method);
8183         num_args = sig->hasthis + sig->param_count;
8184         ip = (unsigned char*)header->code;
8185         cfg->cil_start = ip;
8186         end = ip + header->code_size;
8187         cfg->stat_cil_code_size += header->code_size;
8188
8189         seq_points = cfg->gen_seq_points && cfg->method == method;
8190
8191         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8192                 /* We could hit a seq point before attaching to the JIT (#8338) */
8193                 seq_points = FALSE;
8194         }
8195
8196         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8197                 minfo = mono_debug_lookup_method (method);
8198                 if (minfo) {
8199                         MonoSymSeqPoint *sps;
8200                         int i, n_il_offsets;
8201
8202                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8203                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8204                         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);
8205                         sym_seq_points = TRUE;
8206                         for (i = 0; i < n_il_offsets; ++i) {
8207                                 if (sps [i].il_offset < header->code_size)
8208                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8209                         }
8210                         g_free (sps);
8211                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8212                         /* Methods without line number info like auto-generated property accessors */
8213                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8214                         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);
8215                         sym_seq_points = TRUE;
8216                 }
8217         }
8218
8219         /*
8220          * Methods without init_locals set could cause asserts in various passes
8221          * (#497220). To work around this, we emit dummy initialization opcodes
8222          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8223          * on some platforms.
8224          */
8225         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8226                 init_locals = header->init_locals;
8227         else
8228                 init_locals = TRUE;
8229
8230         method_definition = method;
8231         while (method_definition->is_inflated) {
8232                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8233                 method_definition = imethod->declaring;
8234         }
8235
8236         /* SkipVerification is not allowed if core-clr is enabled */
8237         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8238                 dont_verify = TRUE;
8239                 dont_verify_stloc = TRUE;
8240         }
8241
8242         if (sig->is_inflated)
8243                 generic_context = mono_method_get_context (method);
8244         else if (generic_container)
8245                 generic_context = &generic_container->context;
8246         cfg->generic_context = generic_context;
8247
8248         if (!cfg->gshared)
8249                 g_assert (!sig->has_type_parameters);
8250
8251         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8252                 g_assert (method->is_inflated);
8253                 g_assert (mono_method_get_context (method)->method_inst);
8254         }
8255         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8256                 g_assert (sig->generic_param_count);
8257
8258         if (cfg->method == method) {
8259                 cfg->real_offset = 0;
8260         } else {
8261                 cfg->real_offset = inline_offset;
8262         }
8263
8264         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8265         cfg->cil_offset_to_bb_len = header->code_size;
8266
8267         cfg->current_method = method;
8268
8269         if (cfg->verbose_level > 2)
8270                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8271
8272         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8273         if (sig->hasthis)
8274                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8275         for (n = 0; n < sig->param_count; ++n)
8276                 param_types [n + sig->hasthis] = sig->params [n];
8277         cfg->arg_types = param_types;
8278
8279         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8280         if (cfg->method == method) {
8281
8282                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8283                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8284
8285                 /* ENTRY BLOCK */
8286                 NEW_BBLOCK (cfg, start_bblock);
8287                 cfg->bb_entry = start_bblock;
8288                 start_bblock->cil_code = NULL;
8289                 start_bblock->cil_length = 0;
8290
8291                 /* EXIT BLOCK */
8292                 NEW_BBLOCK (cfg, end_bblock);
8293                 cfg->bb_exit = end_bblock;
8294                 end_bblock->cil_code = NULL;
8295                 end_bblock->cil_length = 0;
8296                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8297                 g_assert (cfg->num_bblocks == 2);
8298
8299                 arg_array = cfg->args;
8300
8301                 if (header->num_clauses) {
8302                         cfg->spvars = g_hash_table_new (NULL, NULL);
8303                         cfg->exvars = g_hash_table_new (NULL, NULL);
8304                 }
8305                 /* handle exception clauses */
8306                 for (i = 0; i < header->num_clauses; ++i) {
8307                         MonoBasicBlock *try_bb;
8308                         MonoExceptionClause *clause = &header->clauses [i];
8309                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8310
8311                         try_bb->real_offset = clause->try_offset;
8312                         try_bb->try_start = TRUE;
8313                         try_bb->region = ((i + 1) << 8) | clause->flags;
8314                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8315                         tblock->real_offset = clause->handler_offset;
8316                         tblock->flags |= BB_EXCEPTION_HANDLER;
8317
8318                         /*
8319                          * Linking the try block with the EH block hinders inlining as we won't be able to
8320                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8321                          */
8322                         if (COMPILE_LLVM (cfg))
8323                                 link_bblock (cfg, try_bb, tblock);
8324
8325                         if (*(ip + clause->handler_offset) == CEE_POP)
8326                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8327
8328                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8329                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8330                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8331                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8332                                 MONO_ADD_INS (tblock, ins);
8333
8334                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8335                                         /* finally clauses already have a seq point */
8336                                         /* seq points for filter clauses are emitted below */
8337                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8338                                         MONO_ADD_INS (tblock, ins);
8339                                 }
8340
8341                                 /* todo: is a fault block unsafe to optimize? */
8342                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8343                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8344                         }
8345
8346                         /*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);
8347                           while (p < end) {
8348                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8349                           }*/
8350                         /* catch and filter blocks get the exception object on the stack */
8351                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8352                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8353
8354                                 /* mostly like handle_stack_args (), but just sets the input args */
8355                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8356                                 tblock->in_scount = 1;
8357                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8358                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8359
8360                                 cfg->cbb = tblock;
8361
8362 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8363                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8364                                 if (!cfg->compile_llvm) {
8365                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8366                                         ins->dreg = tblock->in_stack [0]->dreg;
8367                                         MONO_ADD_INS (tblock, ins);
8368                                 }
8369 #else
8370                                 MonoInst *dummy_use;
8371
8372                                 /*
8373                                  * Add a dummy use for the exvar so its liveness info will be
8374                                  * correct.
8375                                  */
8376                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8377 #endif
8378
8379                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8380                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8381                                         MONO_ADD_INS (tblock, ins);
8382                                 }
8383
8384                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8385                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8386                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8387                                         tblock->real_offset = clause->data.filter_offset;
8388                                         tblock->in_scount = 1;
8389                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8390                                         /* The filter block shares the exvar with the handler block */
8391                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8392                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8393                                         MONO_ADD_INS (tblock, ins);
8394                                 }
8395                         }
8396
8397                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8398                                         clause->data.catch_class &&
8399                                         cfg->gshared &&
8400                                         mono_class_check_context_used (clause->data.catch_class)) {
8401                                 /*
8402                                  * In shared generic code with catch
8403                                  * clauses containing type variables
8404                                  * the exception handling code has to
8405                                  * be able to get to the rgctx.
8406                                  * Therefore we have to make sure that
8407                                  * the vtable/mrgctx argument (for
8408                                  * static or generic methods) or the
8409                                  * "this" argument (for non-static
8410                                  * methods) are live.
8411                                  */
8412                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8413                                                 mini_method_get_context (method)->method_inst ||
8414                                                 method->klass->valuetype) {
8415                                         mono_get_vtable_var (cfg);
8416                                 } else {
8417                                         MonoInst *dummy_use;
8418
8419                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8420                                 }
8421                         }
8422                 }
8423         } else {
8424                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8425                 cfg->cbb = start_bblock;
8426                 cfg->args = arg_array;
8427                 mono_save_args (cfg, sig, inline_args);
8428         }
8429
8430         /* FIRST CODE BLOCK */
8431         NEW_BBLOCK (cfg, tblock);
8432         tblock->cil_code = ip;
8433         cfg->cbb = tblock;
8434         cfg->ip = ip;
8435
8436         ADD_BBLOCK (cfg, tblock);
8437
8438         if (cfg->method == method) {
8439                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8440                 if (breakpoint_id) {
8441                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8442                         MONO_ADD_INS (cfg->cbb, ins);
8443                 }
8444         }
8445
8446         /* we use a separate basic block for the initialization code */
8447         NEW_BBLOCK (cfg, init_localsbb);
8448         cfg->bb_init = init_localsbb;
8449         init_localsbb->real_offset = cfg->real_offset;
8450         start_bblock->next_bb = init_localsbb;
8451         init_localsbb->next_bb = cfg->cbb;
8452         link_bblock (cfg, start_bblock, init_localsbb);
8453         link_bblock (cfg, init_localsbb, cfg->cbb);
8454
8455         cfg->cbb = init_localsbb;
8456
8457         if (cfg->gsharedvt && cfg->method == method) {
8458                 MonoGSharedVtMethodInfo *info;
8459                 MonoInst *var, *locals_var;
8460                 int dreg;
8461
8462                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8463                 info->method = cfg->method;
8464                 info->count_entries = 16;
8465                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8466                 cfg->gsharedvt_info = info;
8467
8468                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8469                 /* prevent it from being register allocated */
8470                 //var->flags |= MONO_INST_VOLATILE;
8471                 cfg->gsharedvt_info_var = var;
8472
8473                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8474                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8475
8476                 /* Allocate locals */
8477                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8478                 /* prevent it from being register allocated */
8479                 //locals_var->flags |= MONO_INST_VOLATILE;
8480                 cfg->gsharedvt_locals_var = locals_var;
8481
8482                 dreg = alloc_ireg (cfg);
8483                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8484
8485                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8486                 ins->dreg = locals_var->dreg;
8487                 ins->sreg1 = dreg;
8488                 MONO_ADD_INS (cfg->cbb, ins);
8489                 cfg->gsharedvt_locals_var_ins = ins;
8490
8491                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8492                 /*
8493                 if (init_locals)
8494                         ins->flags |= MONO_INST_INIT;
8495                 */
8496         }
8497
8498         if (mono_security_core_clr_enabled ()) {
8499                 /* check if this is native code, e.g. an icall or a p/invoke */
8500                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8501                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8502                         if (wrapped) {
8503                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8504                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8505
8506                                 /* if this ia a native call then it can only be JITted from platform code */
8507                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8508                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8509                                                 MonoException *ex = icall ? mono_get_exception_security () :
8510                                                         mono_get_exception_method_access ();
8511                                                 emit_throw_exception (cfg, ex);
8512                                         }
8513                                 }
8514                         }
8515                 }
8516         }
8517
8518         CHECK_CFG_EXCEPTION;
8519
8520         if (header->code_size == 0)
8521                 UNVERIFIED;
8522
8523         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8524                 ip = err_pos;
8525                 UNVERIFIED;
8526         }
8527
8528         if (cfg->method == method)
8529                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8530
8531         for (n = 0; n < header->num_locals; ++n) {
8532                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8533                         UNVERIFIED;
8534         }
8535         class_inits = NULL;
8536
8537         /* We force the vtable variable here for all shared methods
8538            for the possibility that they might show up in a stack
8539            trace where their exact instantiation is needed. */
8540         if (cfg->gshared && method == cfg->method) {
8541                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8542                                 mini_method_get_context (method)->method_inst ||
8543                                 method->klass->valuetype) {
8544                         mono_get_vtable_var (cfg);
8545                 } else {
8546                         /* FIXME: Is there a better way to do this?
8547                            We need the variable live for the duration
8548                            of the whole method. */
8549                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8550                 }
8551         }
8552
8553         /* add a check for this != NULL to inlined methods */
8554         if (is_virtual_call) {
8555                 MonoInst *arg_ins;
8556
8557                 NEW_ARGLOAD (cfg, arg_ins, 0);
8558                 MONO_ADD_INS (cfg->cbb, arg_ins);
8559                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8560         }
8561
8562         skip_dead_blocks = !dont_verify;
8563         if (skip_dead_blocks) {
8564                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8565                 CHECK_CFG_ERROR;
8566                 g_assert (bb);
8567         }
8568
8569         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8570         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8571
8572         ins_flag = 0;
8573         start_new_bblock = 0;
8574         while (ip < end) {
8575                 if (cfg->method == method)
8576                         cfg->real_offset = ip - header->code;
8577                 else
8578                         cfg->real_offset = inline_offset;
8579                 cfg->ip = ip;
8580
8581                 context_used = 0;
8582
8583                 if (start_new_bblock) {
8584                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8585                         if (start_new_bblock == 2) {
8586                                 g_assert (ip == tblock->cil_code);
8587                         } else {
8588                                 GET_BBLOCK (cfg, tblock, ip);
8589                         }
8590                         cfg->cbb->next_bb = tblock;
8591                         cfg->cbb = tblock;
8592                         start_new_bblock = 0;
8593                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8594                                 if (cfg->verbose_level > 3)
8595                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8596                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8597                                 *sp++ = ins;
8598                         }
8599                         if (class_inits)
8600                                 g_slist_free (class_inits);
8601                         class_inits = NULL;
8602                 } else {
8603                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8604                                 link_bblock (cfg, cfg->cbb, tblock);
8605                                 if (sp != stack_start) {
8606                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8607                                         sp = stack_start;
8608                                         CHECK_UNVERIFIABLE (cfg);
8609                                 }
8610                                 cfg->cbb->next_bb = tblock;
8611                                 cfg->cbb = tblock;
8612                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8613                                         if (cfg->verbose_level > 3)
8614                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8615                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8616                                         *sp++ = ins;
8617                                 }
8618                                 g_slist_free (class_inits);
8619                                 class_inits = NULL;
8620                         }
8621                 }
8622
8623                 if (skip_dead_blocks) {
8624                         int ip_offset = ip - header->code;
8625
8626                         if (ip_offset == bb->end)
8627                                 bb = bb->next;
8628
8629                         if (bb->dead) {
8630                                 int op_size = mono_opcode_size (ip, end);
8631                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8632
8633                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8634
8635                                 if (ip_offset + op_size == bb->end) {
8636                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8637                                         MONO_ADD_INS (cfg->cbb, ins);
8638                                         start_new_bblock = 1;
8639                                 }
8640
8641                                 ip += op_size;
8642                                 continue;
8643                         }
8644                 }
8645                 /*
8646                  * Sequence points are points where the debugger can place a breakpoint.
8647                  * Currently, we generate these automatically at points where the IL
8648                  * stack is empty.
8649                  */
8650                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8651                         /*
8652                          * Make methods interruptable at the beginning, and at the targets of
8653                          * backward branches.
8654                          * Also, do this at the start of every bblock in methods with clauses too,
8655                          * to be able to handle instructions with inprecise control flow like
8656                          * throw/endfinally.
8657                          * Backward branches are handled at the end of method-to-ir ().
8658                          */
8659                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8660                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8661
8662                         /* Avoid sequence points on empty IL like .volatile */
8663                         // FIXME: Enable this
8664                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8665                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8666                         if ((sp != stack_start) && !sym_seq_point)
8667                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8668                         MONO_ADD_INS (cfg->cbb, ins);
8669
8670                         if (sym_seq_points)
8671                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8672                 }
8673
8674                 cfg->cbb->real_offset = cfg->real_offset;
8675
8676                 if ((cfg->method == method) && cfg->coverage_info) {
8677                         guint32 cil_offset = ip - header->code;
8678                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8679
8680                         /* TODO: Use an increment here */
8681 #if defined(TARGET_X86)
8682                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8683                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8684                         ins->inst_imm = 1;
8685                         MONO_ADD_INS (cfg->cbb, ins);
8686 #else
8687                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8688                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8689 #endif
8690                 }
8691
8692                 if (cfg->verbose_level > 3)
8693                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8694
8695                 switch (*ip) {
8696                 case CEE_NOP:
8697                         if (seq_points && !sym_seq_points && sp != stack_start) {
8698                                 /*
8699                                  * The C# compiler uses these nops to notify the JIT that it should
8700                                  * insert seq points.
8701                                  */
8702                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8703                                 MONO_ADD_INS (cfg->cbb, ins);
8704                         }
8705                         if (cfg->keep_cil_nops)
8706                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8707                         else
8708                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8709                         ip++;
8710                         MONO_ADD_INS (cfg->cbb, ins);
8711                         break;
8712                 case CEE_BREAK:
8713                         if (should_insert_brekpoint (cfg->method)) {
8714                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8715                         } else {
8716                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8717                         }
8718                         ip++;
8719                         MONO_ADD_INS (cfg->cbb, ins);
8720                         break;
8721                 case CEE_LDARG_0:
8722                 case CEE_LDARG_1:
8723                 case CEE_LDARG_2:
8724                 case CEE_LDARG_3:
8725                         CHECK_STACK_OVF (1);
8726                         n = (*ip)-CEE_LDARG_0;
8727                         CHECK_ARG (n);
8728                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8729                         ip++;
8730                         *sp++ = ins;
8731                         break;
8732                 case CEE_LDLOC_0:
8733                 case CEE_LDLOC_1:
8734                 case CEE_LDLOC_2:
8735                 case CEE_LDLOC_3:
8736                         CHECK_STACK_OVF (1);
8737                         n = (*ip)-CEE_LDLOC_0;
8738                         CHECK_LOCAL (n);
8739                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8740                         ip++;
8741                         *sp++ = ins;
8742                         break;
8743                 case CEE_STLOC_0:
8744                 case CEE_STLOC_1:
8745                 case CEE_STLOC_2:
8746                 case CEE_STLOC_3: {
8747                         CHECK_STACK (1);
8748                         n = (*ip)-CEE_STLOC_0;
8749                         CHECK_LOCAL (n);
8750                         --sp;
8751                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8752                                 UNVERIFIED;
8753                         emit_stloc_ir (cfg, sp, header, n);
8754                         ++ip;
8755                         inline_costs += 1;
8756                         break;
8757                         }
8758                 case CEE_LDARG_S:
8759                         CHECK_OPSIZE (2);
8760                         CHECK_STACK_OVF (1);
8761                         n = ip [1];
8762                         CHECK_ARG (n);
8763                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8764                         *sp++ = ins;
8765                         ip += 2;
8766                         break;
8767                 case CEE_LDARGA_S:
8768                         CHECK_OPSIZE (2);
8769                         CHECK_STACK_OVF (1);
8770                         n = ip [1];
8771                         CHECK_ARG (n);
8772                         NEW_ARGLOADA (cfg, ins, n);
8773                         MONO_ADD_INS (cfg->cbb, ins);
8774                         *sp++ = ins;
8775                         ip += 2;
8776                         break;
8777                 case CEE_STARG_S:
8778                         CHECK_OPSIZE (2);
8779                         CHECK_STACK (1);
8780                         --sp;
8781                         n = ip [1];
8782                         CHECK_ARG (n);
8783                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8784                                 UNVERIFIED;
8785                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8786                         ip += 2;
8787                         break;
8788                 case CEE_LDLOC_S:
8789                         CHECK_OPSIZE (2);
8790                         CHECK_STACK_OVF (1);
8791                         n = ip [1];
8792                         CHECK_LOCAL (n);
8793                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8794                         *sp++ = ins;
8795                         ip += 2;
8796                         break;
8797                 case CEE_LDLOCA_S: {
8798                         unsigned char *tmp_ip;
8799                         CHECK_OPSIZE (2);
8800                         CHECK_STACK_OVF (1);
8801                         CHECK_LOCAL (ip [1]);
8802
8803                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8804                                 ip = tmp_ip;
8805                                 inline_costs += 1;
8806                                 break;
8807                         }
8808
8809                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8810                         *sp++ = ins;
8811                         ip += 2;
8812                         break;
8813                 }
8814                 case CEE_STLOC_S:
8815                         CHECK_OPSIZE (2);
8816                         CHECK_STACK (1);
8817                         --sp;
8818                         CHECK_LOCAL (ip [1]);
8819                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8820                                 UNVERIFIED;
8821                         emit_stloc_ir (cfg, sp, header, ip [1]);
8822                         ip += 2;
8823                         inline_costs += 1;
8824                         break;
8825                 case CEE_LDNULL:
8826                         CHECK_STACK_OVF (1);
8827                         EMIT_NEW_PCONST (cfg, ins, NULL);
8828                         ins->type = STACK_OBJ;
8829                         ++ip;
8830                         *sp++ = ins;
8831                         break;
8832                 case CEE_LDC_I4_M1:
8833                         CHECK_STACK_OVF (1);
8834                         EMIT_NEW_ICONST (cfg, ins, -1);
8835                         ++ip;
8836                         *sp++ = ins;
8837                         break;
8838                 case CEE_LDC_I4_0:
8839                 case CEE_LDC_I4_1:
8840                 case CEE_LDC_I4_2:
8841                 case CEE_LDC_I4_3:
8842                 case CEE_LDC_I4_4:
8843                 case CEE_LDC_I4_5:
8844                 case CEE_LDC_I4_6:
8845                 case CEE_LDC_I4_7:
8846                 case CEE_LDC_I4_8:
8847                         CHECK_STACK_OVF (1);
8848                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8849                         ++ip;
8850                         *sp++ = ins;
8851                         break;
8852                 case CEE_LDC_I4_S:
8853                         CHECK_OPSIZE (2);
8854                         CHECK_STACK_OVF (1);
8855                         ++ip;
8856                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8857                         ++ip;
8858                         *sp++ = ins;
8859                         break;
8860                 case CEE_LDC_I4:
8861                         CHECK_OPSIZE (5);
8862                         CHECK_STACK_OVF (1);
8863                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8864                         ip += 5;
8865                         *sp++ = ins;
8866                         break;
8867                 case CEE_LDC_I8:
8868                         CHECK_OPSIZE (9);
8869                         CHECK_STACK_OVF (1);
8870                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8871                         ins->type = STACK_I8;
8872                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8873                         ++ip;
8874                         ins->inst_l = (gint64)read64 (ip);
8875                         MONO_ADD_INS (cfg->cbb, ins);
8876                         ip += 8;
8877                         *sp++ = ins;
8878                         break;
8879                 case CEE_LDC_R4: {
8880                         float *f;
8881                         gboolean use_aotconst = FALSE;
8882
8883 #ifdef TARGET_POWERPC
8884                         /* FIXME: Clean this up */
8885                         if (cfg->compile_aot)
8886                                 use_aotconst = TRUE;
8887 #endif
8888
8889                         /* FIXME: we should really allocate this only late in the compilation process */
8890                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8891                         CHECK_OPSIZE (5);
8892                         CHECK_STACK_OVF (1);
8893
8894                         if (use_aotconst) {
8895                                 MonoInst *cons;
8896                                 int dreg;
8897
8898                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8899
8900                                 dreg = alloc_freg (cfg);
8901                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8902                                 ins->type = cfg->r4_stack_type;
8903                         } else {
8904                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8905                                 ins->type = cfg->r4_stack_type;
8906                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8907                                 ins->inst_p0 = f;
8908                                 MONO_ADD_INS (cfg->cbb, ins);
8909                         }
8910                         ++ip;
8911                         readr4 (ip, f);
8912                         ip += 4;
8913                         *sp++ = ins;
8914                         break;
8915                 }
8916                 case CEE_LDC_R8: {
8917                         double *d;
8918                         gboolean use_aotconst = FALSE;
8919
8920 #ifdef TARGET_POWERPC
8921                         /* FIXME: Clean this up */
8922                         if (cfg->compile_aot)
8923                                 use_aotconst = TRUE;
8924 #endif
8925
8926                         /* FIXME: we should really allocate this only late in the compilation process */
8927                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8928                         CHECK_OPSIZE (9);
8929                         CHECK_STACK_OVF (1);
8930
8931                         if (use_aotconst) {
8932                                 MonoInst *cons;
8933                                 int dreg;
8934
8935                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8936
8937                                 dreg = alloc_freg (cfg);
8938                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8939                                 ins->type = STACK_R8;
8940                         } else {
8941                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8942                                 ins->type = STACK_R8;
8943                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8944                                 ins->inst_p0 = d;
8945                                 MONO_ADD_INS (cfg->cbb, ins);
8946                         }
8947                         ++ip;
8948                         readr8 (ip, d);
8949                         ip += 8;
8950                         *sp++ = ins;
8951                         break;
8952                 }
8953                 case CEE_DUP: {
8954                         MonoInst *temp, *store;
8955                         CHECK_STACK (1);
8956                         CHECK_STACK_OVF (1);
8957                         sp--;
8958                         ins = *sp;
8959
8960                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8961                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8962
8963                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8964                         *sp++ = ins;
8965
8966                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8967                         *sp++ = ins;
8968
8969                         ++ip;
8970                         inline_costs += 2;
8971                         break;
8972                 }
8973                 case CEE_POP:
8974                         CHECK_STACK (1);
8975                         ip++;
8976                         --sp;
8977
8978 #ifdef TARGET_X86
8979                         if (sp [0]->type == STACK_R8)
8980                                 /* we need to pop the value from the x86 FP stack */
8981                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8982 #endif
8983                         break;
8984                 case CEE_JMP: {
8985                         MonoCallInst *call;
8986                         MonoMethodSignature *fsig;
8987                         int i, n;
8988
8989                         INLINE_FAILURE ("jmp");
8990                         GSHAREDVT_FAILURE (*ip);
8991
8992                         CHECK_OPSIZE (5);
8993                         if (stack_start != sp)
8994                                 UNVERIFIED;
8995                         token = read32 (ip + 1);
8996                         /* FIXME: check the signature matches */
8997                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
8998                         CHECK_CFG_ERROR;
8999
9000                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9001                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9002
9003                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9004
9005                         fsig = mono_method_signature (cmethod);
9006                         n = fsig->param_count + fsig->hasthis;
9007                         if (cfg->llvm_only) {
9008                                 MonoInst **args;
9009
9010                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9011                                 for (i = 0; i < n; ++i)
9012                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9013                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9014                                 /*
9015                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9016                                  * have to emit a normal return since llvm expects it.
9017                                  */
9018                                 if (cfg->ret)
9019                                         emit_setret (cfg, ins);
9020                                 MONO_INST_NEW (cfg, ins, OP_BR);
9021                                 ins->inst_target_bb = end_bblock;
9022                                 MONO_ADD_INS (cfg->cbb, ins);
9023                                 link_bblock (cfg, cfg->cbb, end_bblock);
9024                                 ip += 5;
9025                                 break;
9026                         } else if (cfg->backend->have_op_tail_call) {
9027                                 /* Handle tail calls similarly to calls */
9028                                 DISABLE_AOT (cfg);
9029
9030                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9031                                 call->method = cmethod;
9032                                 call->tail_call = TRUE;
9033                                 call->signature = mono_method_signature (cmethod);
9034                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9035                                 call->inst.inst_p0 = cmethod;
9036                                 for (i = 0; i < n; ++i)
9037                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9038
9039                                 mono_arch_emit_call (cfg, call);
9040                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9041                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9042                         } else {
9043                                 for (i = 0; i < num_args; ++i)
9044                                         /* Prevent arguments from being optimized away */
9045                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9046
9047                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9048                                 ins = (MonoInst*)call;
9049                                 ins->inst_p0 = cmethod;
9050                                 MONO_ADD_INS (cfg->cbb, ins);
9051                         }
9052
9053                         ip += 5;
9054                         start_new_bblock = 1;
9055                         break;
9056                 }
9057                 case CEE_CALLI: {
9058                         MonoInst *addr;
9059                         MonoMethodSignature *fsig;
9060
9061                         CHECK_OPSIZE (5);
9062                         token = read32 (ip + 1);
9063
9064                         ins = NULL;
9065
9066                         //GSHAREDVT_FAILURE (*ip);
9067                         cmethod = NULL;
9068                         CHECK_STACK (1);
9069                         --sp;
9070                         addr = *sp;
9071                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9072                         CHECK_CFG_ERROR;
9073
9074                         if (method->dynamic && fsig->pinvoke) {
9075                                 MonoInst *args [3];
9076
9077                                 /*
9078                                  * This is a call through a function pointer using a pinvoke
9079                                  * signature. Have to create a wrapper and call that instead.
9080                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9081                                  * instead based on the signature.
9082                                  */
9083                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9084                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9085                                 args [2] = addr;
9086                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9087                         }
9088
9089                         n = fsig->param_count + fsig->hasthis;
9090
9091                         CHECK_STACK (n);
9092
9093                         //g_assert (!virtual_ || fsig->hasthis);
9094
9095                         sp -= n;
9096
9097                         inline_costs += 10 * num_calls++;
9098
9099                         /*
9100                          * Making generic calls out of gsharedvt methods.
9101                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9102                          * patching gshared method addresses into a gsharedvt method.
9103                          */
9104                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9105                                 /*
9106                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9107                                  */
9108                                 MonoInst *callee = addr;
9109
9110                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9111                                         /* Not tested */
9112                                         GSHAREDVT_FAILURE (*ip);
9113
9114                                 if (cfg->llvm_only)
9115                                         // FIXME:
9116                                         GSHAREDVT_FAILURE (*ip);
9117
9118                                 addr = emit_get_rgctx_sig (cfg, context_used,
9119                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9120                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9121                                 goto calli_end;
9122                         }
9123
9124                         /* Prevent inlining of methods with indirect calls */
9125                         INLINE_FAILURE ("indirect call");
9126
9127                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9128                                 MonoJumpInfoType info_type;
9129                                 gpointer info_data;
9130
9131                                 /*
9132                                  * Instead of emitting an indirect call, emit a direct call
9133                                  * with the contents of the aotconst as the patch info.
9134                                  */
9135                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9136                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9137                                         info_data = addr->inst_p0;
9138                                 } else {
9139                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9140                                         info_data = addr->inst_right->inst_left;
9141                                 }
9142
9143                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9144                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9145                                         NULLIFY_INS (addr);
9146                                         goto calli_end;
9147                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9148                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9149                                         NULLIFY_INS (addr);
9150                                         goto calli_end;
9151                                 }
9152                         }
9153                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9154
9155                         calli_end:
9156
9157                         /* End of call, INS should contain the result of the call, if any */
9158
9159                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9160                                 g_assert (ins);
9161                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9162                         }
9163
9164                         CHECK_CFG_EXCEPTION;
9165
9166                         ip += 5;
9167                         ins_flag = 0;
9168                         constrained_class = NULL;
9169                         break;
9170                 }
9171                 case CEE_CALL:
9172                 case CEE_CALLVIRT: {
9173                         MonoInst *addr = NULL;
9174                         MonoMethodSignature *fsig = NULL;
9175                         int array_rank = 0;
9176                         int virtual_ = *ip == CEE_CALLVIRT;
9177                         gboolean pass_imt_from_rgctx = FALSE;
9178                         MonoInst *imt_arg = NULL;
9179                         MonoInst *keep_this_alive = NULL;
9180                         gboolean pass_vtable = FALSE;
9181                         gboolean pass_mrgctx = FALSE;
9182                         MonoInst *vtable_arg = NULL;
9183                         gboolean check_this = FALSE;
9184                         gboolean supported_tail_call = FALSE;
9185                         gboolean tail_call = FALSE;
9186                         gboolean need_seq_point = FALSE;
9187                         guint32 call_opcode = *ip;
9188                         gboolean emit_widen = TRUE;
9189                         gboolean push_res = TRUE;
9190                         gboolean skip_ret = FALSE;
9191                         gboolean delegate_invoke = FALSE;
9192                         gboolean direct_icall = FALSE;
9193                         gboolean constrained_partial_call = FALSE;
9194                         MonoMethod *cil_method;
9195
9196                         CHECK_OPSIZE (5);
9197                         token = read32 (ip + 1);
9198
9199                         ins = NULL;
9200
9201                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9202                         CHECK_CFG_ERROR;
9203
9204                         cil_method = cmethod;
9205
9206                         if (constrained_class) {
9207                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9208                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9209                                                 g_assert (!cmethod->klass->valuetype);
9210                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9211                                                         constrained_partial_call = TRUE;
9212                                         }
9213                                 }
9214
9215                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9216                                         if (cfg->verbose_level > 2)
9217                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9218                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9219                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9220                                                   cfg->gshared)) {
9221                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9222                                                 CHECK_CFG_ERROR;
9223                                         }
9224                                 } else {
9225                                         if (cfg->verbose_level > 2)
9226                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9227
9228                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9229                                                 /*
9230                                                  * This is needed since get_method_constrained can't find
9231                                                  * the method in klass representing a type var.
9232                                                  * The type var is guaranteed to be a reference type in this
9233                                                  * case.
9234                                                  */
9235                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9236                                                         g_assert (!cmethod->klass->valuetype);
9237                                         } else {
9238                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9239                                                 CHECK_CFG_ERROR;
9240                                         }
9241                                 }
9242                         }
9243
9244                         if (!dont_verify && !cfg->skip_visibility) {
9245                                 MonoMethod *target_method = cil_method;
9246                                 if (method->is_inflated) {
9247                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9248                                         CHECK_CFG_ERROR;
9249                                 }
9250                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9251                                         !mono_method_can_access_method (method, cil_method))
9252                                         emit_method_access_failure (cfg, method, cil_method);
9253                         }
9254
9255                         if (mono_security_core_clr_enabled ())
9256                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9257
9258                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9259                                 /* MS.NET seems to silently convert this to a callvirt */
9260                                 virtual_ = 1;
9261
9262                         {
9263                                 /*
9264                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9265                                  * converts to a callvirt.
9266                                  *
9267                                  * tests/bug-515884.il is an example of this behavior
9268                                  */
9269                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9270                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9271                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9272                                         virtual_ = 1;
9273                         }
9274
9275                         if (!cmethod->klass->inited)
9276                                 if (!mono_class_init (cmethod->klass))
9277                                         TYPE_LOAD_ERROR (cmethod->klass);
9278
9279                         fsig = mono_method_signature (cmethod);
9280                         if (!fsig)
9281                                 LOAD_ERROR;
9282                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9283                                 mini_class_is_system_array (cmethod->klass)) {
9284                                 array_rank = cmethod->klass->rank;
9285                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9286                                 direct_icall = TRUE;
9287                         } else if (fsig->pinvoke) {
9288                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9289                                 fsig = mono_method_signature (wrapper);
9290                         } else if (constrained_class) {
9291                         } else {
9292                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9293                                 CHECK_CFG_ERROR;
9294                         }
9295
9296                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9297                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9298
9299                         /* See code below */
9300                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9301                                 MonoBasicBlock *tbb;
9302
9303                                 GET_BBLOCK (cfg, tbb, ip + 5);
9304                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9305                                         /*
9306                                          * We want to extend the try block to cover the call, but we can't do it if the
9307                                          * call is made directly since its followed by an exception check.
9308                                          */
9309                                         direct_icall = FALSE;
9310                                 }
9311                         }
9312
9313                         mono_save_token_info (cfg, image, token, cil_method);
9314
9315                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9316                                 need_seq_point = TRUE;
9317
9318                         /* Don't support calls made using type arguments for now */
9319                         /*
9320                           if (cfg->gsharedvt) {
9321                           if (mini_is_gsharedvt_signature (fsig))
9322                           GSHAREDVT_FAILURE (*ip);
9323                           }
9324                         */
9325
9326                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9327                                 g_assert_not_reached ();
9328
9329                         n = fsig->param_count + fsig->hasthis;
9330
9331                         if (!cfg->gshared && cmethod->klass->generic_container)
9332                                 UNVERIFIED;
9333
9334                         if (!cfg->gshared)
9335                                 g_assert (!mono_method_check_context_used (cmethod));
9336
9337                         CHECK_STACK (n);
9338
9339                         //g_assert (!virtual_ || fsig->hasthis);
9340
9341                         sp -= n;
9342
9343                         /*
9344                          * We have the `constrained.' prefix opcode.
9345                          */
9346                         if (constrained_class) {
9347                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9348                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9349                                                 /* The 'Own method' case below */
9350                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9351                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9352                                         } else {
9353                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9354                                                 CHECK_CFG_EXCEPTION;
9355                                                 g_assert (ins);
9356                                                 goto call_end;
9357                                         }
9358                                 }
9359
9360                                 if (constrained_partial_call) {
9361                                         gboolean need_box = TRUE;
9362
9363                                         /*
9364                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9365                                          * called method is not known at compile time either. The called method could end up being
9366                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9367                                          * to box the receiver.
9368                                          * A simple solution would be to box always and make a normal virtual call, but that would
9369                                          * be bad performance wise.
9370                                          */
9371                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9372                                                 /*
9373                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9374                                                  */
9375                                                 need_box = FALSE;
9376                                         }
9377
9378                                         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)) {
9379                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9380                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9381                                                 ins->klass = constrained_class;
9382                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9383                                                 CHECK_CFG_EXCEPTION;
9384                                         } else if (need_box) {
9385                                                 MonoInst *box_type;
9386                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9387                                                 MonoInst *nonbox_call;
9388
9389                                                 /*
9390                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9391                                                  * if needed.
9392                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9393                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9394                                                  */
9395                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9396
9397                                                 NEW_BBLOCK (cfg, is_ref_bb);
9398                                                 NEW_BBLOCK (cfg, end_bb);
9399
9400                                                 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);
9401                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9402                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9403
9404                                                 /* Non-ref case */
9405                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9406
9407                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9408
9409                                                 /* Ref case */
9410                                                 MONO_START_BB (cfg, is_ref_bb);
9411                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9412                                                 ins->klass = constrained_class;
9413                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9414                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9415
9416                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9417
9418                                                 MONO_START_BB (cfg, end_bb);
9419                                                 cfg->cbb = end_bb;
9420
9421                                                 nonbox_call->dreg = ins->dreg;
9422                                                 goto call_end;
9423                                         } else {
9424                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9425                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9426                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9427                                                 goto call_end;
9428                                         }
9429                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9430                                         /*
9431                                          * The type parameter is instantiated as a valuetype,
9432                                          * but that type doesn't override the method we're
9433                                          * calling, so we need to box `this'.
9434                                          */
9435                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9436                                         ins->klass = constrained_class;
9437                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9438                                         CHECK_CFG_EXCEPTION;
9439                                 } else if (!constrained_class->valuetype) {
9440                                         int dreg = alloc_ireg_ref (cfg);
9441
9442                                         /*
9443                                          * The type parameter is instantiated as a reference
9444                                          * type.  We have a managed pointer on the stack, so
9445                                          * we need to dereference it here.
9446                                          */
9447                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9448                                         ins->type = STACK_OBJ;
9449                                         sp [0] = ins;
9450                                 } else {
9451                                         if (cmethod->klass->valuetype) {
9452                                                 /* Own method */
9453                                         } else {
9454                                                 /* Interface method */
9455                                                 int ioffset, slot;
9456
9457                                                 mono_class_setup_vtable (constrained_class);
9458                                                 CHECK_TYPELOAD (constrained_class);
9459                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9460                                                 if (ioffset == -1)
9461                                                         TYPE_LOAD_ERROR (constrained_class);
9462                                                 slot = mono_method_get_vtable_slot (cmethod);
9463                                                 if (slot == -1)
9464                                                         TYPE_LOAD_ERROR (cmethod->klass);
9465                                                 cmethod = constrained_class->vtable [ioffset + slot];
9466
9467                                                 if (cmethod->klass == mono_defaults.enum_class) {
9468                                                         /* Enum implements some interfaces, so treat this as the first case */
9469                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9470                                                         ins->klass = constrained_class;
9471                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9472                                                         CHECK_CFG_EXCEPTION;
9473                                                 }
9474                                         }
9475                                         virtual_ = 0;
9476                                 }
9477                                 constrained_class = NULL;
9478                         }
9479
9480                         if (check_call_signature (cfg, fsig, sp))
9481                                 UNVERIFIED;
9482
9483                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9484                                 delegate_invoke = TRUE;
9485
9486                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9487                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9488                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9489                                         emit_widen = FALSE;
9490                                 }
9491
9492                                 goto call_end;
9493                         }
9494
9495                         /*
9496                          * If the callee is a shared method, then its static cctor
9497                          * might not get called after the call was patched.
9498                          */
9499                         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)) {
9500                                 emit_class_init (cfg, cmethod->klass);
9501                                 CHECK_TYPELOAD (cmethod->klass);
9502                         }
9503
9504                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9505
9506                         if (cfg->gshared) {
9507                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9508
9509                                 context_used = mini_method_check_context_used (cfg, cmethod);
9510
9511                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9512                                         /* Generic method interface
9513                                            calls are resolved via a
9514                                            helper function and don't
9515                                            need an imt. */
9516                                         if (!cmethod_context || !cmethod_context->method_inst)
9517                                                 pass_imt_from_rgctx = TRUE;
9518                                 }
9519
9520                                 /*
9521                                  * If a shared method calls another
9522                                  * shared method then the caller must
9523                                  * have a generic sharing context
9524                                  * because the magic trampoline
9525                                  * requires it.  FIXME: We shouldn't
9526                                  * have to force the vtable/mrgctx
9527                                  * variable here.  Instead there
9528                                  * should be a flag in the cfg to
9529                                  * request a generic sharing context.
9530                                  */
9531                                 if (context_used &&
9532                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9533                                         mono_get_vtable_var (cfg);
9534                         }
9535
9536                         if (pass_vtable) {
9537                                 if (context_used) {
9538                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9539                                 } else {
9540                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9541
9542                                         CHECK_TYPELOAD (cmethod->klass);
9543                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9544                                 }
9545                         }
9546
9547                         if (pass_mrgctx) {
9548                                 g_assert (!vtable_arg);
9549
9550                                 if (!cfg->compile_aot) {
9551                                         /*
9552                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9553                                          * for type load errors before.
9554                                          */
9555                                         mono_class_setup_vtable (cmethod->klass);
9556                                         CHECK_TYPELOAD (cmethod->klass);
9557                                 }
9558
9559                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9560
9561                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9562                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9563                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9564                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9565                                         if (virtual_)
9566                                                 check_this = TRUE;
9567                                         virtual_ = 0;
9568                                 }
9569                         }
9570
9571                         if (pass_imt_from_rgctx) {
9572                                 g_assert (!pass_vtable);
9573
9574                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9575                                         cmethod, MONO_RGCTX_INFO_METHOD);
9576                         }
9577
9578                         if (check_this)
9579                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9580
9581                         /* Calling virtual generic methods */
9582                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9583                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9584                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9585                             fsig->generic_param_count &&
9586                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9587                                 !cfg->llvm_only) {
9588                                 MonoInst *this_temp, *this_arg_temp, *store;
9589                                 MonoInst *iargs [4];
9590
9591                                 g_assert (fsig->is_inflated);
9592
9593                                 /* Prevent inlining of methods that contain indirect calls */
9594                                 INLINE_FAILURE ("virtual generic call");
9595
9596                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9597                                         GSHAREDVT_FAILURE (*ip);
9598
9599                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9600                                         g_assert (!imt_arg);
9601                                         if (!context_used)
9602                                                 g_assert (cmethod->is_inflated);
9603                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9604                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9605                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9606                                 } else {
9607                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9608                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9609                                         MONO_ADD_INS (cfg->cbb, store);
9610
9611                                         /* FIXME: This should be a managed pointer */
9612                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9613
9614                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9615                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9616                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9617                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9618                                         addr = mono_emit_jit_icall (cfg,
9619                                                                                                 mono_helper_compile_generic_method, iargs);
9620
9621                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9622
9623                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9624                                 }
9625
9626                                 goto call_end;
9627                         }
9628
9629                         /*
9630                          * Implement a workaround for the inherent races involved in locking:
9631                          * Monitor.Enter ()
9632                          * try {
9633                          * } finally {
9634                          *    Monitor.Exit ()
9635                          * }
9636                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9637                          * try block, the Exit () won't be executed, see:
9638                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9639                          * To work around this, we extend such try blocks to include the last x bytes
9640                          * of the Monitor.Enter () call.
9641                          */
9642                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9643                                 MonoBasicBlock *tbb;
9644
9645                                 GET_BBLOCK (cfg, tbb, ip + 5);
9646                                 /*
9647                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9648                                  * from Monitor.Enter like ArgumentNullException.
9649                                  */
9650                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9651                                         /* Mark this bblock as needing to be extended */
9652                                         tbb->extend_try_block = TRUE;
9653                                 }
9654                         }
9655
9656                         /* Conversion to a JIT intrinsic */
9657                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9658                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9659                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9660                                         emit_widen = FALSE;
9661                                 }
9662                                 goto call_end;
9663                         }
9664                         CHECK_CFG_ERROR;
9665
9666                         /* Inlining */
9667                         if ((cfg->opt & MONO_OPT_INLINE) &&
9668                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9669                             mono_method_check_inlining (cfg, cmethod)) {
9670                                 int costs;
9671                                 gboolean always = FALSE;
9672
9673                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9674                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9675                                         /* Prevent inlining of methods that call wrappers */
9676                                         INLINE_FAILURE ("wrapper call");
9677                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9678                                         always = TRUE;
9679                                 }
9680
9681                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9682                                 if (costs) {
9683                                         cfg->real_offset += 5;
9684
9685                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9686                                                 /* *sp is already set by inline_method */
9687                                                 sp++;
9688                                                 push_res = FALSE;
9689                                         }
9690
9691                                         inline_costs += costs;
9692
9693                                         goto call_end;
9694                                 }
9695                         }
9696
9697                         /* Tail recursion elimination */
9698                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9699                                 gboolean has_vtargs = FALSE;
9700                                 int i;
9701
9702                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9703                                 INLINE_FAILURE ("tail call");
9704
9705                                 /* keep it simple */
9706                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9707                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9708                                                 has_vtargs = TRUE;
9709                                 }
9710
9711                                 if (!has_vtargs) {
9712                                         for (i = 0; i < n; ++i)
9713                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9714                                         MONO_INST_NEW (cfg, ins, OP_BR);
9715                                         MONO_ADD_INS (cfg->cbb, ins);
9716                                         tblock = start_bblock->out_bb [0];
9717                                         link_bblock (cfg, cfg->cbb, tblock);
9718                                         ins->inst_target_bb = tblock;
9719                                         start_new_bblock = 1;
9720
9721                                         /* skip the CEE_RET, too */
9722                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9723                                                 skip_ret = TRUE;
9724                                         push_res = FALSE;
9725                                         goto call_end;
9726                                 }
9727                         }
9728
9729                         inline_costs += 10 * num_calls++;
9730
9731                         /*
9732                          * Making generic calls out of gsharedvt methods.
9733                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9734                          * patching gshared method addresses into a gsharedvt method.
9735                          */
9736                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9737                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9738                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9739                                 MonoRgctxInfoType info_type;
9740
9741                                 if (virtual_) {
9742                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9743                                                 //GSHAREDVT_FAILURE (*ip);
9744                                         // disable for possible remoting calls
9745                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9746                                                 GSHAREDVT_FAILURE (*ip);
9747                                         if (fsig->generic_param_count) {
9748                                                 /* virtual generic call */
9749                                                 g_assert (!imt_arg);
9750                                                 /* Same as the virtual generic case above */
9751                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9752                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9753                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9754                                                 vtable_arg = NULL;
9755                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9756                                                 /* This can happen when we call a fully instantiated iface method */
9757                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9758                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9759                                                 vtable_arg = NULL;
9760                                         }
9761                                 }
9762
9763                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9764                                         keep_this_alive = sp [0];
9765
9766                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9767                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9768                                 else
9769                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9770                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9771
9772                                 if (cfg->llvm_only) {
9773                                         // FIXME: Avoid initializing vtable_arg
9774                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9775                                 } else {
9776                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9777                                 }
9778                                 goto call_end;
9779                         }
9780
9781                         /* Generic sharing */
9782
9783                         /*
9784                          * Use this if the callee is gsharedvt sharable too, since
9785                          * at runtime we might find an instantiation so the call cannot
9786                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9787                          */
9788                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9789                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9790                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9791                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9792                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9793                                 INLINE_FAILURE ("gshared");
9794
9795                                 g_assert (cfg->gshared && cmethod);
9796                                 g_assert (!addr);
9797
9798                                 /*
9799                                  * We are compiling a call to a
9800                                  * generic method from shared code,
9801                                  * which means that we have to look up
9802                                  * the method in the rgctx and do an
9803                                  * indirect call.
9804                                  */
9805                                 if (fsig->hasthis)
9806                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9807
9808                                 if (cfg->llvm_only) {
9809                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9810                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9811                                         else
9812                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9813                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9814                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9815                                 } else {
9816                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9817                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9818                                 }
9819                                 goto call_end;
9820                         }
9821
9822                         /* Direct calls to icalls */
9823                         if (direct_icall) {
9824                                 MonoMethod *wrapper;
9825                                 int costs;
9826
9827                                 /* Inline the wrapper */
9828                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9829
9830                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9831                                 g_assert (costs > 0);
9832                                 cfg->real_offset += 5;
9833
9834                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9835                                         /* *sp is already set by inline_method */
9836                                         sp++;
9837                                         push_res = FALSE;
9838                                 }
9839
9840                                 inline_costs += costs;
9841
9842                                 goto call_end;
9843                         }
9844
9845                         /* Array methods */
9846                         if (array_rank) {
9847                                 MonoInst *addr;
9848
9849                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9850                                         MonoInst *val = sp [fsig->param_count];
9851
9852                                         if (val->type == STACK_OBJ) {
9853                                                 MonoInst *iargs [2];
9854
9855                                                 iargs [0] = sp [0];
9856                                                 iargs [1] = val;
9857
9858                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9859                                         }
9860
9861                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9862                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9863                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9864                                                 emit_write_barrier (cfg, addr, val);
9865                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9866                                                 GSHAREDVT_FAILURE (*ip);
9867                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9868                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9869
9870                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9871                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9872                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9873                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9874                                         CHECK_TYPELOAD (cmethod->klass);
9875
9876                                         readonly = FALSE;
9877                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9878                                         ins = addr;
9879                                 } else {
9880                                         g_assert_not_reached ();
9881                                 }
9882
9883                                 emit_widen = FALSE;
9884                                 goto call_end;
9885                         }
9886
9887                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9888                         if (ins)
9889                                 goto call_end;
9890
9891                         /* Tail prefix / tail call optimization */
9892
9893                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9894                         /* FIXME: runtime generic context pointer for jumps? */
9895                         /* FIXME: handle this for generic sharing eventually */
9896                         if ((ins_flag & MONO_INST_TAILCALL) &&
9897                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9898                                 supported_tail_call = TRUE;
9899
9900                         if (supported_tail_call) {
9901                                 MonoCallInst *call;
9902
9903                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9904                                 INLINE_FAILURE ("tail call");
9905
9906                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9907
9908                                 if (cfg->backend->have_op_tail_call) {
9909                                         /* Handle tail calls similarly to normal calls */
9910                                         tail_call = TRUE;
9911                                 } else {
9912                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9913
9914                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9915                                         call->tail_call = TRUE;
9916                                         call->method = cmethod;
9917                                         call->signature = mono_method_signature (cmethod);
9918
9919                                         /*
9920                                          * We implement tail calls by storing the actual arguments into the
9921                                          * argument variables, then emitting a CEE_JMP.
9922                                          */
9923                                         for (i = 0; i < n; ++i) {
9924                                                 /* Prevent argument from being register allocated */
9925                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9926                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9927                                         }
9928                                         ins = (MonoInst*)call;
9929                                         ins->inst_p0 = cmethod;
9930                                         ins->inst_p1 = arg_array [0];
9931                                         MONO_ADD_INS (cfg->cbb, ins);
9932                                         link_bblock (cfg, cfg->cbb, end_bblock);
9933                                         start_new_bblock = 1;
9934
9935                                         // FIXME: Eliminate unreachable epilogs
9936
9937                                         /*
9938                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9939                                          * only reachable from this call.
9940                                          */
9941                                         GET_BBLOCK (cfg, tblock, ip + 5);
9942                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9943                                                 skip_ret = TRUE;
9944                                         push_res = FALSE;
9945
9946                                         goto call_end;
9947                                 }
9948                         }
9949
9950                         /*
9951                          * Synchronized wrappers.
9952                          * Its hard to determine where to replace a method with its synchronized
9953                          * wrapper without causing an infinite recursion. The current solution is
9954                          * to add the synchronized wrapper in the trampolines, and to
9955                          * change the called method to a dummy wrapper, and resolve that wrapper
9956                          * to the real method in mono_jit_compile_method ().
9957                          */
9958                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9959                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9960                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9961                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9962                         }
9963
9964                         /*
9965                          * Virtual calls in llvm-only mode.
9966                          */
9967                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9968                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9969                                 goto call_end;
9970                         }
9971
9972                         /* Common call */
9973                         INLINE_FAILURE ("call");
9974                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9975                                                                                           imt_arg, vtable_arg);
9976
9977                         if (tail_call && !cfg->llvm_only) {
9978                                 link_bblock (cfg, cfg->cbb, end_bblock);
9979                                 start_new_bblock = 1;
9980
9981                                 // FIXME: Eliminate unreachable epilogs
9982
9983                                 /*
9984                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9985                                  * only reachable from this call.
9986                                  */
9987                                 GET_BBLOCK (cfg, tblock, ip + 5);
9988                                 if (tblock == cfg->cbb || tblock->in_count == 0)
9989                                         skip_ret = TRUE;
9990                                 push_res = FALSE;
9991                         }
9992
9993                         call_end:
9994
9995                         /* End of call, INS should contain the result of the call, if any */
9996
9997                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
9998                                 g_assert (ins);
9999                                 if (emit_widen)
10000                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10001                                 else
10002                                         *sp++ = ins;
10003                         }
10004
10005                         if (keep_this_alive) {
10006                                 MonoInst *dummy_use;
10007
10008                                 /* See mono_emit_method_call_full () */
10009                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10010                         }
10011
10012                         CHECK_CFG_EXCEPTION;
10013
10014                         ip += 5;
10015                         if (skip_ret) {
10016                                 g_assert (*ip == CEE_RET);
10017                                 ip += 1;
10018                         }
10019                         ins_flag = 0;
10020                         constrained_class = NULL;
10021                         if (need_seq_point)
10022                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10023                         break;
10024                 }
10025                 case CEE_RET:
10026                         if (cfg->method != method) {
10027                                 /* return from inlined method */
10028                                 /*
10029                                  * If in_count == 0, that means the ret is unreachable due to
10030                                  * being preceeded by a throw. In that case, inline_method () will
10031                                  * handle setting the return value
10032                                  * (test case: test_0_inline_throw ()).
10033                                  */
10034                                 if (return_var && cfg->cbb->in_count) {
10035                                         MonoType *ret_type = mono_method_signature (method)->ret;
10036
10037                                         MonoInst *store;
10038                                         CHECK_STACK (1);
10039                                         --sp;
10040
10041                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10042                                                 UNVERIFIED;
10043
10044                                         //g_assert (returnvar != -1);
10045                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10046                                         cfg->ret_var_set = TRUE;
10047                                 }
10048                         } else {
10049                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10050
10051                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10052                                         emit_pop_lmf (cfg);
10053
10054                                 if (cfg->ret) {
10055                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10056
10057                                         if (seq_points && !sym_seq_points) {
10058                                                 /*
10059                                                  * Place a seq point here too even through the IL stack is not
10060                                                  * empty, so a step over on
10061                                                  * call <FOO>
10062                                                  * ret
10063                                                  * will work correctly.
10064                                                  */
10065                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10066                                                 MONO_ADD_INS (cfg->cbb, ins);
10067                                         }
10068
10069                                         g_assert (!return_var);
10070                                         CHECK_STACK (1);
10071                                         --sp;
10072
10073                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10074                                                 UNVERIFIED;
10075
10076                                         emit_setret (cfg, *sp);
10077                                 }
10078                         }
10079                         if (sp != stack_start)
10080                                 UNVERIFIED;
10081                         MONO_INST_NEW (cfg, ins, OP_BR);
10082                         ip++;
10083                         ins->inst_target_bb = end_bblock;
10084                         MONO_ADD_INS (cfg->cbb, ins);
10085                         link_bblock (cfg, cfg->cbb, end_bblock);
10086                         start_new_bblock = 1;
10087                         break;
10088                 case CEE_BR_S:
10089                         CHECK_OPSIZE (2);
10090                         MONO_INST_NEW (cfg, ins, OP_BR);
10091                         ip++;
10092                         target = ip + 1 + (signed char)(*ip);
10093                         ++ip;
10094                         GET_BBLOCK (cfg, tblock, target);
10095                         link_bblock (cfg, cfg->cbb, tblock);
10096                         ins->inst_target_bb = tblock;
10097                         if (sp != stack_start) {
10098                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10099                                 sp = stack_start;
10100                                 CHECK_UNVERIFIABLE (cfg);
10101                         }
10102                         MONO_ADD_INS (cfg->cbb, ins);
10103                         start_new_bblock = 1;
10104                         inline_costs += BRANCH_COST;
10105                         break;
10106                 case CEE_BEQ_S:
10107                 case CEE_BGE_S:
10108                 case CEE_BGT_S:
10109                 case CEE_BLE_S:
10110                 case CEE_BLT_S:
10111                 case CEE_BNE_UN_S:
10112                 case CEE_BGE_UN_S:
10113                 case CEE_BGT_UN_S:
10114                 case CEE_BLE_UN_S:
10115                 case CEE_BLT_UN_S:
10116                         CHECK_OPSIZE (2);
10117                         CHECK_STACK (2);
10118                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10119                         ip++;
10120                         target = ip + 1 + *(signed char*)ip;
10121                         ip++;
10122
10123                         ADD_BINCOND (NULL);
10124
10125                         sp = stack_start;
10126                         inline_costs += BRANCH_COST;
10127                         break;
10128                 case CEE_BR:
10129                         CHECK_OPSIZE (5);
10130                         MONO_INST_NEW (cfg, ins, OP_BR);
10131                         ip++;
10132
10133                         target = ip + 4 + (gint32)read32(ip);
10134                         ip += 4;
10135                         GET_BBLOCK (cfg, tblock, target);
10136                         link_bblock (cfg, cfg->cbb, tblock);
10137                         ins->inst_target_bb = tblock;
10138                         if (sp != stack_start) {
10139                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10140                                 sp = stack_start;
10141                                 CHECK_UNVERIFIABLE (cfg);
10142                         }
10143
10144                         MONO_ADD_INS (cfg->cbb, ins);
10145
10146                         start_new_bblock = 1;
10147                         inline_costs += BRANCH_COST;
10148                         break;
10149                 case CEE_BRFALSE_S:
10150                 case CEE_BRTRUE_S:
10151                 case CEE_BRFALSE:
10152                 case CEE_BRTRUE: {
10153                         MonoInst *cmp;
10154                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10155                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10156                         guint32 opsize = is_short ? 1 : 4;
10157
10158                         CHECK_OPSIZE (opsize);
10159                         CHECK_STACK (1);
10160                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10161                                 UNVERIFIED;
10162                         ip ++;
10163                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10164                         ip += opsize;
10165
10166                         sp--;
10167
10168                         GET_BBLOCK (cfg, tblock, target);
10169                         link_bblock (cfg, cfg->cbb, tblock);
10170                         GET_BBLOCK (cfg, tblock, ip);
10171                         link_bblock (cfg, cfg->cbb, tblock);
10172
10173                         if (sp != stack_start) {
10174                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10175                                 CHECK_UNVERIFIABLE (cfg);
10176                         }
10177
10178                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10179                         cmp->sreg1 = sp [0]->dreg;
10180                         type_from_op (cfg, cmp, sp [0], NULL);
10181                         CHECK_TYPE (cmp);
10182
10183 #if SIZEOF_REGISTER == 4
10184                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10185                                 /* Convert it to OP_LCOMPARE */
10186                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10187                                 ins->type = STACK_I8;
10188                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10189                                 ins->inst_l = 0;
10190                                 MONO_ADD_INS (cfg->cbb, ins);
10191                                 cmp->opcode = OP_LCOMPARE;
10192                                 cmp->sreg2 = ins->dreg;
10193                         }
10194 #endif
10195                         MONO_ADD_INS (cfg->cbb, cmp);
10196
10197                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10198                         type_from_op (cfg, ins, sp [0], NULL);
10199                         MONO_ADD_INS (cfg->cbb, ins);
10200                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10201                         GET_BBLOCK (cfg, tblock, target);
10202                         ins->inst_true_bb = tblock;
10203                         GET_BBLOCK (cfg, tblock, ip);
10204                         ins->inst_false_bb = tblock;
10205                         start_new_bblock = 2;
10206
10207                         sp = stack_start;
10208                         inline_costs += BRANCH_COST;
10209                         break;
10210                 }
10211                 case CEE_BEQ:
10212                 case CEE_BGE:
10213                 case CEE_BGT:
10214                 case CEE_BLE:
10215                 case CEE_BLT:
10216                 case CEE_BNE_UN:
10217                 case CEE_BGE_UN:
10218                 case CEE_BGT_UN:
10219                 case CEE_BLE_UN:
10220                 case CEE_BLT_UN:
10221                         CHECK_OPSIZE (5);
10222                         CHECK_STACK (2);
10223                         MONO_INST_NEW (cfg, ins, *ip);
10224                         ip++;
10225                         target = ip + 4 + (gint32)read32(ip);
10226                         ip += 4;
10227
10228                         ADD_BINCOND (NULL);
10229
10230                         sp = stack_start;
10231                         inline_costs += BRANCH_COST;
10232                         break;
10233                 case CEE_SWITCH: {
10234                         MonoInst *src1;
10235                         MonoBasicBlock **targets;
10236                         MonoBasicBlock *default_bblock;
10237                         MonoJumpInfoBBTable *table;
10238                         int offset_reg = alloc_preg (cfg);
10239                         int target_reg = alloc_preg (cfg);
10240                         int table_reg = alloc_preg (cfg);
10241                         int sum_reg = alloc_preg (cfg);
10242                         gboolean use_op_switch;
10243
10244                         CHECK_OPSIZE (5);
10245                         CHECK_STACK (1);
10246                         n = read32 (ip + 1);
10247                         --sp;
10248                         src1 = sp [0];
10249                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10250                                 UNVERIFIED;
10251
10252                         ip += 5;
10253                         CHECK_OPSIZE (n * sizeof (guint32));
10254                         target = ip + n * sizeof (guint32);
10255
10256                         GET_BBLOCK (cfg, default_bblock, target);
10257                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10258
10259                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10260                         for (i = 0; i < n; ++i) {
10261                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10262                                 targets [i] = tblock;
10263                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10264                                 ip += 4;
10265                         }
10266
10267                         if (sp != stack_start) {
10268                                 /*
10269                                  * Link the current bb with the targets as well, so handle_stack_args
10270                                  * will set their in_stack correctly.
10271                                  */
10272                                 link_bblock (cfg, cfg->cbb, default_bblock);
10273                                 for (i = 0; i < n; ++i)
10274                                         link_bblock (cfg, cfg->cbb, targets [i]);
10275
10276                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10277                                 sp = stack_start;
10278                                 CHECK_UNVERIFIABLE (cfg);
10279
10280                                 /* Undo the links */
10281                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10282                                 for (i = 0; i < n; ++i)
10283                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10284                         }
10285
10286                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10287                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10288
10289                         for (i = 0; i < n; ++i)
10290                                 link_bblock (cfg, cfg->cbb, targets [i]);
10291
10292                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10293                         table->table = targets;
10294                         table->table_size = n;
10295
10296                         use_op_switch = FALSE;
10297 #ifdef TARGET_ARM
10298                         /* ARM implements SWITCH statements differently */
10299                         /* FIXME: Make it use the generic implementation */
10300                         if (!cfg->compile_aot)
10301                                 use_op_switch = TRUE;
10302 #endif
10303
10304                         if (COMPILE_LLVM (cfg))
10305                                 use_op_switch = TRUE;
10306
10307                         cfg->cbb->has_jump_table = 1;
10308
10309                         if (use_op_switch) {
10310                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10311                                 ins->sreg1 = src1->dreg;
10312                                 ins->inst_p0 = table;
10313                                 ins->inst_many_bb = targets;
10314                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10315                                 MONO_ADD_INS (cfg->cbb, ins);
10316                         } else {
10317                                 if (sizeof (gpointer) == 8)
10318                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10319                                 else
10320                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10321
10322 #if SIZEOF_REGISTER == 8
10323                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10324                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10325 #endif
10326
10327                                 if (cfg->compile_aot) {
10328                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10329                                 } else {
10330                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10331                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10332                                         ins->inst_p0 = table;
10333                                         ins->dreg = table_reg;
10334                                         MONO_ADD_INS (cfg->cbb, ins);
10335                                 }
10336
10337                                 /* FIXME: Use load_memindex */
10338                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10339                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10340                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10341                         }
10342                         start_new_bblock = 1;
10343                         inline_costs += (BRANCH_COST * 2);
10344                         break;
10345                 }
10346                 case CEE_LDIND_I1:
10347                 case CEE_LDIND_U1:
10348                 case CEE_LDIND_I2:
10349                 case CEE_LDIND_U2:
10350                 case CEE_LDIND_I4:
10351                 case CEE_LDIND_U4:
10352                 case CEE_LDIND_I8:
10353                 case CEE_LDIND_I:
10354                 case CEE_LDIND_R4:
10355                 case CEE_LDIND_R8:
10356                 case CEE_LDIND_REF:
10357                         CHECK_STACK (1);
10358                         --sp;
10359
10360                         switch (*ip) {
10361                         case CEE_LDIND_R4:
10362                         case CEE_LDIND_R8:
10363                                 dreg = alloc_freg (cfg);
10364                                 break;
10365                         case CEE_LDIND_I8:
10366                                 dreg = alloc_lreg (cfg);
10367                                 break;
10368                         case CEE_LDIND_REF:
10369                                 dreg = alloc_ireg_ref (cfg);
10370                                 break;
10371                         default:
10372                                 dreg = alloc_preg (cfg);
10373                         }
10374
10375                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10376                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10377                         if (*ip == CEE_LDIND_R4)
10378                                 ins->type = cfg->r4_stack_type;
10379                         ins->flags |= ins_flag;
10380                         MONO_ADD_INS (cfg->cbb, ins);
10381                         *sp++ = ins;
10382                         if (ins_flag & MONO_INST_VOLATILE) {
10383                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10384                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10385                         }
10386                         ins_flag = 0;
10387                         ++ip;
10388                         break;
10389                 case CEE_STIND_REF:
10390                 case CEE_STIND_I1:
10391                 case CEE_STIND_I2:
10392                 case CEE_STIND_I4:
10393                 case CEE_STIND_I8:
10394                 case CEE_STIND_R4:
10395                 case CEE_STIND_R8:
10396                 case CEE_STIND_I:
10397                         CHECK_STACK (2);
10398                         sp -= 2;
10399
10400                         if (ins_flag & MONO_INST_VOLATILE) {
10401                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10402                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10403                         }
10404
10405                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10406                         ins->flags |= ins_flag;
10407                         ins_flag = 0;
10408
10409                         MONO_ADD_INS (cfg->cbb, ins);
10410
10411                         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)))
10412                                 emit_write_barrier (cfg, sp [0], sp [1]);
10413
10414                         inline_costs += 1;
10415                         ++ip;
10416                         break;
10417
10418                 case CEE_MUL:
10419                         CHECK_STACK (2);
10420
10421                         MONO_INST_NEW (cfg, ins, (*ip));
10422                         sp -= 2;
10423                         ins->sreg1 = sp [0]->dreg;
10424                         ins->sreg2 = sp [1]->dreg;
10425                         type_from_op (cfg, ins, sp [0], sp [1]);
10426                         CHECK_TYPE (ins);
10427                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10428
10429                         /* Use the immediate opcodes if possible */
10430                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10431                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10432                                 if (imm_opcode != -1) {
10433                                         ins->opcode = imm_opcode;
10434                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10435                                         ins->sreg2 = -1;
10436
10437                                         NULLIFY_INS (sp [1]);
10438                                 }
10439                         }
10440
10441                         MONO_ADD_INS ((cfg)->cbb, (ins));
10442
10443                         *sp++ = mono_decompose_opcode (cfg, ins);
10444                         ip++;
10445                         break;
10446                 case CEE_ADD:
10447                 case CEE_SUB:
10448                 case CEE_DIV:
10449                 case CEE_DIV_UN:
10450                 case CEE_REM:
10451                 case CEE_REM_UN:
10452                 case CEE_AND:
10453                 case CEE_OR:
10454                 case CEE_XOR:
10455                 case CEE_SHL:
10456                 case CEE_SHR:
10457                 case CEE_SHR_UN:
10458                         CHECK_STACK (2);
10459
10460                         MONO_INST_NEW (cfg, ins, (*ip));
10461                         sp -= 2;
10462                         ins->sreg1 = sp [0]->dreg;
10463                         ins->sreg2 = sp [1]->dreg;
10464                         type_from_op (cfg, ins, sp [0], sp [1]);
10465                         CHECK_TYPE (ins);
10466                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10467                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10468
10469                         /* FIXME: Pass opcode to is_inst_imm */
10470
10471                         /* Use the immediate opcodes if possible */
10472                         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)) {
10473                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10474                                 if (imm_opcode != -1) {
10475                                         ins->opcode = imm_opcode;
10476                                         if (sp [1]->opcode == OP_I8CONST) {
10477 #if SIZEOF_REGISTER == 8
10478                                                 ins->inst_imm = sp [1]->inst_l;
10479 #else
10480                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10481                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10482 #endif
10483                                         }
10484                                         else
10485                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10486                                         ins->sreg2 = -1;
10487
10488                                         /* Might be followed by an instruction added by add_widen_op */
10489                                         if (sp [1]->next == NULL)
10490                                                 NULLIFY_INS (sp [1]);
10491                                 }
10492                         }
10493                         MONO_ADD_INS ((cfg)->cbb, (ins));
10494
10495                         *sp++ = mono_decompose_opcode (cfg, ins);
10496                         ip++;
10497                         break;
10498                 case CEE_NEG:
10499                 case CEE_NOT:
10500                 case CEE_CONV_I1:
10501                 case CEE_CONV_I2:
10502                 case CEE_CONV_I4:
10503                 case CEE_CONV_R4:
10504                 case CEE_CONV_R8:
10505                 case CEE_CONV_U4:
10506                 case CEE_CONV_I8:
10507                 case CEE_CONV_U8:
10508                 case CEE_CONV_OVF_I8:
10509                 case CEE_CONV_OVF_U8:
10510                 case CEE_CONV_R_UN:
10511                         CHECK_STACK (1);
10512
10513                         /* Special case this earlier so we have long constants in the IR */
10514                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10515                                 int data = sp [-1]->inst_c0;
10516                                 sp [-1]->opcode = OP_I8CONST;
10517                                 sp [-1]->type = STACK_I8;
10518 #if SIZEOF_REGISTER == 8
10519                                 if ((*ip) == CEE_CONV_U8)
10520                                         sp [-1]->inst_c0 = (guint32)data;
10521                                 else
10522                                         sp [-1]->inst_c0 = data;
10523 #else
10524                                 sp [-1]->inst_ls_word = data;
10525                                 if ((*ip) == CEE_CONV_U8)
10526                                         sp [-1]->inst_ms_word = 0;
10527                                 else
10528                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10529 #endif
10530                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10531                         }
10532                         else {
10533                                 ADD_UNOP (*ip);
10534                         }
10535                         ip++;
10536                         break;
10537                 case CEE_CONV_OVF_I4:
10538                 case CEE_CONV_OVF_I1:
10539                 case CEE_CONV_OVF_I2:
10540                 case CEE_CONV_OVF_I:
10541                 case CEE_CONV_OVF_U:
10542                         CHECK_STACK (1);
10543
10544                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10545                                 ADD_UNOP (CEE_CONV_OVF_I8);
10546                                 ADD_UNOP (*ip);
10547                         } else {
10548                                 ADD_UNOP (*ip);
10549                         }
10550                         ip++;
10551                         break;
10552                 case CEE_CONV_OVF_U1:
10553                 case CEE_CONV_OVF_U2:
10554                 case CEE_CONV_OVF_U4:
10555                         CHECK_STACK (1);
10556
10557                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10558                                 ADD_UNOP (CEE_CONV_OVF_U8);
10559                                 ADD_UNOP (*ip);
10560                         } else {
10561                                 ADD_UNOP (*ip);
10562                         }
10563                         ip++;
10564                         break;
10565                 case CEE_CONV_OVF_I1_UN:
10566                 case CEE_CONV_OVF_I2_UN:
10567                 case CEE_CONV_OVF_I4_UN:
10568                 case CEE_CONV_OVF_I8_UN:
10569                 case CEE_CONV_OVF_U1_UN:
10570                 case CEE_CONV_OVF_U2_UN:
10571                 case CEE_CONV_OVF_U4_UN:
10572                 case CEE_CONV_OVF_U8_UN:
10573                 case CEE_CONV_OVF_I_UN:
10574                 case CEE_CONV_OVF_U_UN:
10575                 case CEE_CONV_U2:
10576                 case CEE_CONV_U1:
10577                 case CEE_CONV_I:
10578                 case CEE_CONV_U:
10579                         CHECK_STACK (1);
10580                         ADD_UNOP (*ip);
10581                         CHECK_CFG_EXCEPTION;
10582                         ip++;
10583                         break;
10584                 case CEE_ADD_OVF:
10585                 case CEE_ADD_OVF_UN:
10586                 case CEE_MUL_OVF:
10587                 case CEE_MUL_OVF_UN:
10588                 case CEE_SUB_OVF:
10589                 case CEE_SUB_OVF_UN:
10590                         CHECK_STACK (2);
10591                         ADD_BINOP (*ip);
10592                         ip++;
10593                         break;
10594                 case CEE_CPOBJ:
10595                         GSHAREDVT_FAILURE (*ip);
10596                         CHECK_OPSIZE (5);
10597                         CHECK_STACK (2);
10598                         token = read32 (ip + 1);
10599                         klass = mini_get_class (method, token, generic_context);
10600                         CHECK_TYPELOAD (klass);
10601                         sp -= 2;
10602                         if (generic_class_is_reference_type (cfg, klass)) {
10603                                 MonoInst *store, *load;
10604                                 int dreg = alloc_ireg_ref (cfg);
10605
10606                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10607                                 load->flags |= ins_flag;
10608                                 MONO_ADD_INS (cfg->cbb, load);
10609
10610                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10611                                 store->flags |= ins_flag;
10612                                 MONO_ADD_INS (cfg->cbb, store);
10613
10614                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10615                                         emit_write_barrier (cfg, sp [0], sp [1]);
10616                         } else {
10617                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10618                         }
10619                         ins_flag = 0;
10620                         ip += 5;
10621                         break;
10622                 case CEE_LDOBJ: {
10623                         int loc_index = -1;
10624                         int stloc_len = 0;
10625
10626                         CHECK_OPSIZE (5);
10627                         CHECK_STACK (1);
10628                         --sp;
10629                         token = read32 (ip + 1);
10630                         klass = mini_get_class (method, token, generic_context);
10631                         CHECK_TYPELOAD (klass);
10632
10633                         /* Optimize the common ldobj+stloc combination */
10634                         switch (ip [5]) {
10635                         case CEE_STLOC_S:
10636                                 loc_index = ip [6];
10637                                 stloc_len = 2;
10638                                 break;
10639                         case CEE_STLOC_0:
10640                         case CEE_STLOC_1:
10641                         case CEE_STLOC_2:
10642                         case CEE_STLOC_3:
10643                                 loc_index = ip [5] - CEE_STLOC_0;
10644                                 stloc_len = 1;
10645                                 break;
10646                         default:
10647                                 break;
10648                         }
10649
10650                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10651                                 CHECK_LOCAL (loc_index);
10652
10653                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10654                                 ins->dreg = cfg->locals [loc_index]->dreg;
10655                                 ins->flags |= ins_flag;
10656                                 ip += 5;
10657                                 ip += stloc_len;
10658                                 if (ins_flag & MONO_INST_VOLATILE) {
10659                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10660                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10661                                 }
10662                                 ins_flag = 0;
10663                                 break;
10664                         }
10665
10666                         /* Optimize the ldobj+stobj combination */
10667                         /* The reference case ends up being a load+store anyway */
10668                         /* Skip this if the operation is volatile. */
10669                         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)) {
10670                                 CHECK_STACK (1);
10671
10672                                 sp --;
10673
10674                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10675
10676                                 ip += 5 + 5;
10677                                 ins_flag = 0;
10678                                 break;
10679                         }
10680
10681                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10682                         ins->flags |= ins_flag;
10683                         *sp++ = ins;
10684
10685                         if (ins_flag & MONO_INST_VOLATILE) {
10686                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10687                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10688                         }
10689
10690                         ip += 5;
10691                         ins_flag = 0;
10692                         inline_costs += 1;
10693                         break;
10694                 }
10695                 case CEE_LDSTR:
10696                         CHECK_STACK_OVF (1);
10697                         CHECK_OPSIZE (5);
10698                         n = read32 (ip + 1);
10699
10700                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10701                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10702                                 ins->type = STACK_OBJ;
10703                                 *sp = ins;
10704                         }
10705                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10706                                 MonoInst *iargs [1];
10707                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10708
10709                                 if (cfg->compile_aot)
10710                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10711                                 else
10712                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10713                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10714                         } else {
10715                                 if (cfg->opt & MONO_OPT_SHARED) {
10716                                         MonoInst *iargs [3];
10717
10718                                         if (cfg->compile_aot) {
10719                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10720                                         }
10721                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10722                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10723                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10724                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10725                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10726                                         CHECK_CFG_ERROR;
10727                                 } else {
10728                                         if (cfg->cbb->out_of_line) {
10729                                                 MonoInst *iargs [2];
10730
10731                                                 if (image == mono_defaults.corlib) {
10732                                                         /*
10733                                                          * Avoid relocations in AOT and save some space by using a
10734                                                          * version of helper_ldstr specialized to mscorlib.
10735                                                          */
10736                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10737                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10738                                                 } else {
10739                                                         /* Avoid creating the string object */
10740                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10741                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10742                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10743                                                 }
10744                                         }
10745                                         else
10746                                         if (cfg->compile_aot) {
10747                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10748                                                 *sp = ins;
10749                                                 MONO_ADD_INS (cfg->cbb, ins);
10750                                         }
10751                                         else {
10752                                                 NEW_PCONST (cfg, ins, NULL);
10753                                                 ins->type = STACK_OBJ;
10754                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10755                                                 CHECK_CFG_ERROR;
10756
10757                                                 if (!ins->inst_p0)
10758                                                         OUT_OF_MEMORY_FAILURE;
10759
10760                                                 *sp = ins;
10761                                                 MONO_ADD_INS (cfg->cbb, ins);
10762                                         }
10763                                 }
10764                         }
10765
10766                         sp++;
10767                         ip += 5;
10768                         break;
10769                 case CEE_NEWOBJ: {
10770                         MonoInst *iargs [2];
10771                         MonoMethodSignature *fsig;
10772                         MonoInst this_ins;
10773                         MonoInst *alloc;
10774                         MonoInst *vtable_arg = NULL;
10775
10776                         CHECK_OPSIZE (5);
10777                         token = read32 (ip + 1);
10778                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10779                         CHECK_CFG_ERROR;
10780
10781                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10782                         CHECK_CFG_ERROR;
10783
10784                         mono_save_token_info (cfg, image, token, cmethod);
10785
10786                         if (!mono_class_init (cmethod->klass))
10787                                 TYPE_LOAD_ERROR (cmethod->klass);
10788
10789                         context_used = mini_method_check_context_used (cfg, cmethod);
10790
10791                         if (mono_security_core_clr_enabled ())
10792                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10793
10794                         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)) {
10795                                 emit_class_init (cfg, cmethod->klass);
10796                                 CHECK_TYPELOAD (cmethod->klass);
10797                         }
10798
10799                         /*
10800                         if (cfg->gsharedvt) {
10801                                 if (mini_is_gsharedvt_variable_signature (sig))
10802                                         GSHAREDVT_FAILURE (*ip);
10803                         }
10804                         */
10805
10806                         n = fsig->param_count;
10807                         CHECK_STACK (n);
10808
10809                         /*
10810                          * Generate smaller code for the common newobj <exception> instruction in
10811                          * argument checking code.
10812                          */
10813                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10814                                 is_exception_class (cmethod->klass) && n <= 2 &&
10815                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10816                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10817                                 MonoInst *iargs [3];
10818
10819                                 sp -= n;
10820
10821                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10822                                 switch (n) {
10823                                 case 0:
10824                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10825                                         break;
10826                                 case 1:
10827                                         iargs [1] = sp [0];
10828                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10829                                         break;
10830                                 case 2:
10831                                         iargs [1] = sp [0];
10832                                         iargs [2] = sp [1];
10833                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10834                                         break;
10835                                 default:
10836                                         g_assert_not_reached ();
10837                                 }
10838
10839                                 ip += 5;
10840                                 inline_costs += 5;
10841                                 break;
10842                         }
10843
10844                         /* move the args to allow room for 'this' in the first position */
10845                         while (n--) {
10846                                 --sp;
10847                                 sp [1] = sp [0];
10848                         }
10849
10850                         /* check_call_signature () requires sp[0] to be set */
10851                         this_ins.type = STACK_OBJ;
10852                         sp [0] = &this_ins;
10853                         if (check_call_signature (cfg, fsig, sp))
10854                                 UNVERIFIED;
10855
10856                         iargs [0] = NULL;
10857
10858                         if (mini_class_is_system_array (cmethod->klass)) {
10859                                 *sp = emit_get_rgctx_method (cfg, context_used,
10860                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10861
10862                                 /* Avoid varargs in the common case */
10863                                 if (fsig->param_count == 1)
10864                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10865                                 else if (fsig->param_count == 2)
10866                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10867                                 else if (fsig->param_count == 3)
10868                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10869                                 else if (fsig->param_count == 4)
10870                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10871                                 else
10872                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10873                         } else if (cmethod->string_ctor) {
10874                                 g_assert (!context_used);
10875                                 g_assert (!vtable_arg);
10876                                 /* we simply pass a null pointer */
10877                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10878                                 /* now call the string ctor */
10879                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10880                         } else {
10881                                 if (cmethod->klass->valuetype) {
10882                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10883                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10884                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10885
10886                                         alloc = NULL;
10887
10888                                         /*
10889                                          * The code generated by mini_emit_virtual_call () expects
10890                                          * iargs [0] to be a boxed instance, but luckily the vcall
10891                                          * will be transformed into a normal call there.
10892                                          */
10893                                 } else if (context_used) {
10894                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10895                                         *sp = alloc;
10896                                 } else {
10897                                         MonoVTable *vtable = NULL;
10898
10899                                         if (!cfg->compile_aot)
10900                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10901                                         CHECK_TYPELOAD (cmethod->klass);
10902
10903                                         /*
10904                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10905                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10906                                          * As a workaround, we call class cctors before allocating objects.
10907                                          */
10908                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10909                                                 emit_class_init (cfg, cmethod->klass);
10910                                                 if (cfg->verbose_level > 2)
10911                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10912                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10913                                         }
10914
10915                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10916                                         *sp = alloc;
10917                                 }
10918                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10919
10920                                 if (alloc)
10921                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10922
10923                                 /* Now call the actual ctor */
10924                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10925                                 CHECK_CFG_EXCEPTION;
10926                         }
10927
10928                         if (alloc == NULL) {
10929                                 /* Valuetype */
10930                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10931                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10932                                 *sp++= ins;
10933                         } else {
10934                                 *sp++ = alloc;
10935                         }
10936
10937                         ip += 5;
10938                         inline_costs += 5;
10939                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10940                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10941                         break;
10942                 }
10943                 case CEE_CASTCLASS:
10944                 case CEE_ISINST: {
10945                         CHECK_STACK (1);
10946                         --sp;
10947                         CHECK_OPSIZE (5);
10948                         token = read32 (ip + 1);
10949                         klass = mini_get_class (method, token, generic_context);
10950                         CHECK_TYPELOAD (klass);
10951                         if (sp [0]->type != STACK_OBJ)
10952                                 UNVERIFIED;
10953
10954                         MONO_INST_NEW (cfg, ins, *ip == CEE_ISINST ? OP_ISINST : OP_CASTCLASS);
10955                         ins->dreg = alloc_preg (cfg);
10956                         ins->sreg1 = (*sp)->dreg;
10957                         ins->klass = klass;
10958                         ins->type = STACK_OBJ;
10959                         MONO_ADD_INS (cfg->cbb, ins);
10960
10961                         CHECK_CFG_EXCEPTION;
10962                         *sp++ = ins;
10963                         ip += 5;
10964
10965                         cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10966                         break;
10967                 }
10968                 case CEE_UNBOX_ANY: {
10969                         MonoInst *res, *addr;
10970
10971                         CHECK_STACK (1);
10972                         --sp;
10973                         CHECK_OPSIZE (5);
10974                         token = read32 (ip + 1);
10975                         klass = mini_get_class (method, token, generic_context);
10976                         CHECK_TYPELOAD (klass);
10977
10978                         mono_save_token_info (cfg, image, token, klass);
10979
10980                         context_used = mini_class_check_context_used (cfg, klass);
10981
10982                         if (mini_is_gsharedvt_klass (klass)) {
10983                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
10984                                 inline_costs += 2;
10985                         } else if (generic_class_is_reference_type (cfg, klass)) {
10986                                 MONO_INST_NEW (cfg, res, OP_CASTCLASS);
10987                                 res->dreg = alloc_preg (cfg);
10988                                 res->sreg1 = (*sp)->dreg;
10989                                 res->klass = klass;
10990                                 res->type = STACK_OBJ;
10991                                 MONO_ADD_INS (cfg->cbb, res);
10992                                 cfg->flags |= MONO_CFG_HAS_TYPE_CHECK;
10993                         } else if (mono_class_is_nullable (klass)) {
10994                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
10995                         } else {
10996                                 addr = handle_unbox (cfg, klass, sp, context_used);
10997                                 /* LDOBJ */
10998                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
10999                                 res = ins;
11000                                 inline_costs += 2;
11001                         }
11002
11003                         *sp ++ = res;
11004                         ip += 5;
11005                         break;
11006                 }
11007                 case CEE_BOX: {
11008                         MonoInst *val;
11009                         MonoClass *enum_class;
11010                         MonoMethod *has_flag;
11011
11012                         CHECK_STACK (1);
11013                         --sp;
11014                         val = *sp;
11015                         CHECK_OPSIZE (5);
11016                         token = read32 (ip + 1);
11017                         klass = mini_get_class (method, token, generic_context);
11018                         CHECK_TYPELOAD (klass);
11019
11020                         mono_save_token_info (cfg, image, token, klass);
11021
11022                         context_used = mini_class_check_context_used (cfg, klass);
11023
11024                         if (generic_class_is_reference_type (cfg, klass)) {
11025                                 *sp++ = val;
11026                                 ip += 5;
11027                                 break;
11028                         }
11029
11030                         if (klass == mono_defaults.void_class)
11031                                 UNVERIFIED;
11032                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11033                                 UNVERIFIED;
11034                         /* frequent check in generic code: box (struct), brtrue */
11035
11036                         /*
11037                          * Look for:
11038                          *
11039                          *   <push int/long ptr>
11040                          *   <push int/long>
11041                          *   box MyFlags
11042                          *   constrained. MyFlags
11043                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11044                          *
11045                          * If we find this sequence and the operand types on box and constrained
11046                          * are equal, we can emit a specialized instruction sequence instead of
11047                          * the very slow HasFlag () call.
11048                          */
11049                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11050                             /* Cheap checks first. */
11051                             ip + 5 + 6 + 5 < end &&
11052                             ip [5] == CEE_PREFIX1 &&
11053                             ip [6] == CEE_CONSTRAINED_ &&
11054                             ip [11] == CEE_CALLVIRT &&
11055                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11056                             mono_class_is_enum (klass) &&
11057                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11058                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11059                             has_flag->klass == mono_defaults.enum_class &&
11060                             !strcmp (has_flag->name, "HasFlag") &&
11061                             has_flag->signature->hasthis &&
11062                             has_flag->signature->param_count == 1) {
11063                                 CHECK_TYPELOAD (enum_class);
11064
11065                                 if (enum_class == klass) {
11066                                         MonoInst *enum_this, *enum_flag;
11067
11068                                         ip += 5 + 6 + 5;
11069                                         --sp;
11070
11071                                         enum_this = sp [0];
11072                                         enum_flag = sp [1];
11073
11074                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11075                                         break;
11076                                 }
11077                         }
11078
11079                         // FIXME: LLVM can't handle the inconsistent bb linking
11080                         if (!mono_class_is_nullable (klass) &&
11081                                 !mini_is_gsharedvt_klass (klass) &&
11082                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11083                                 (ip [5] == CEE_BRTRUE ||
11084                                  ip [5] == CEE_BRTRUE_S ||
11085                                  ip [5] == CEE_BRFALSE ||
11086                                  ip [5] == CEE_BRFALSE_S)) {
11087                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11088                                 int dreg;
11089                                 MonoBasicBlock *true_bb, *false_bb;
11090
11091                                 ip += 5;
11092
11093                                 if (cfg->verbose_level > 3) {
11094                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11095                                         printf ("<box+brtrue opt>\n");
11096                                 }
11097
11098                                 switch (*ip) {
11099                                 case CEE_BRTRUE_S:
11100                                 case CEE_BRFALSE_S:
11101                                         CHECK_OPSIZE (2);
11102                                         ip++;
11103                                         target = ip + 1 + (signed char)(*ip);
11104                                         ip++;
11105                                         break;
11106                                 case CEE_BRTRUE:
11107                                 case CEE_BRFALSE:
11108                                         CHECK_OPSIZE (5);
11109                                         ip++;
11110                                         target = ip + 4 + (gint)(read32 (ip));
11111                                         ip += 4;
11112                                         break;
11113                                 default:
11114                                         g_assert_not_reached ();
11115                                 }
11116
11117                                 /*
11118                                  * We need to link both bblocks, since it is needed for handling stack
11119                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11120                                  * Branching to only one of them would lead to inconsistencies, so
11121                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11122                                  */
11123                                 GET_BBLOCK (cfg, true_bb, target);
11124                                 GET_BBLOCK (cfg, false_bb, ip);
11125
11126                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11127                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11128
11129                                 if (sp != stack_start) {
11130                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11131                                         sp = stack_start;
11132                                         CHECK_UNVERIFIABLE (cfg);
11133                                 }
11134
11135                                 if (COMPILE_LLVM (cfg)) {
11136                                         dreg = alloc_ireg (cfg);
11137                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11138                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11139
11140                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11141                                 } else {
11142                                         /* The JIT can't eliminate the iconst+compare */
11143                                         MONO_INST_NEW (cfg, ins, OP_BR);
11144                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11145                                         MONO_ADD_INS (cfg->cbb, ins);
11146                                 }
11147
11148                                 start_new_bblock = 1;
11149                                 break;
11150                         }
11151
11152                         *sp++ = handle_box (cfg, val, klass, context_used);
11153
11154                         CHECK_CFG_EXCEPTION;
11155                         ip += 5;
11156                         inline_costs += 1;
11157                         break;
11158                 }
11159                 case CEE_UNBOX: {
11160                         CHECK_STACK (1);
11161                         --sp;
11162                         CHECK_OPSIZE (5);
11163                         token = read32 (ip + 1);
11164                         klass = mini_get_class (method, token, generic_context);
11165                         CHECK_TYPELOAD (klass);
11166
11167                         mono_save_token_info (cfg, image, token, klass);
11168
11169                         context_used = mini_class_check_context_used (cfg, klass);
11170
11171                         if (mono_class_is_nullable (klass)) {
11172                                 MonoInst *val;
11173
11174                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11175                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11176
11177                                 *sp++= ins;
11178                         } else {
11179                                 ins = handle_unbox (cfg, klass, sp, context_used);
11180                                 *sp++ = ins;
11181                         }
11182                         ip += 5;
11183                         inline_costs += 2;
11184                         break;
11185                 }
11186                 case CEE_LDFLD:
11187                 case CEE_LDFLDA:
11188                 case CEE_STFLD:
11189                 case CEE_LDSFLD:
11190                 case CEE_LDSFLDA:
11191                 case CEE_STSFLD: {
11192                         MonoClassField *field;
11193 #ifndef DISABLE_REMOTING
11194                         int costs;
11195 #endif
11196                         guint foffset;
11197                         gboolean is_instance;
11198                         int op;
11199                         gpointer addr = NULL;
11200                         gboolean is_special_static;
11201                         MonoType *ftype;
11202                         MonoInst *store_val = NULL;
11203                         MonoInst *thread_ins;
11204
11205                         op = *ip;
11206                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11207                         if (is_instance) {
11208                                 if (op == CEE_STFLD) {
11209                                         CHECK_STACK (2);
11210                                         sp -= 2;
11211                                         store_val = sp [1];
11212                                 } else {
11213                                         CHECK_STACK (1);
11214                                         --sp;
11215                                 }
11216                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11217                                         UNVERIFIED;
11218                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11219                                         UNVERIFIED;
11220                         } else {
11221                                 if (op == CEE_STSFLD) {
11222                                         CHECK_STACK (1);
11223                                         sp--;
11224                                         store_val = sp [0];
11225                                 }
11226                         }
11227
11228                         CHECK_OPSIZE (5);
11229                         token = read32 (ip + 1);
11230                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11231                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11232                                 klass = field->parent;
11233                         }
11234                         else {
11235                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11236                                 CHECK_CFG_ERROR;
11237                         }
11238                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11239                                 FIELD_ACCESS_FAILURE (method, field);
11240                         mono_class_init (klass);
11241
11242                         /* if the class is Critical then transparent code cannot access it's fields */
11243                         if (!is_instance && mono_security_core_clr_enabled ())
11244                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11245
11246                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11247                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11248                         if (mono_security_core_clr_enabled ())
11249                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11250                         */
11251
11252                         ftype = mono_field_get_type (field);
11253
11254                         /*
11255                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11256                          * the static case.
11257                          */
11258                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11259                                 switch (op) {
11260                                 case CEE_LDFLD:
11261                                         op = CEE_LDSFLD;
11262                                         break;
11263                                 case CEE_STFLD:
11264                                         op = CEE_STSFLD;
11265                                         break;
11266                                 case CEE_LDFLDA:
11267                                         op = CEE_LDSFLDA;
11268                                         break;
11269                                 default:
11270                                         g_assert_not_reached ();
11271                                 }
11272                                 is_instance = FALSE;
11273                         }
11274
11275                         context_used = mini_class_check_context_used (cfg, klass);
11276
11277                         /* INSTANCE CASE */
11278
11279                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11280                         if (op == CEE_STFLD) {
11281                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11282                                         UNVERIFIED;
11283 #ifndef DISABLE_REMOTING
11284                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11285                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11286                                         MonoInst *iargs [5];
11287
11288                                         GSHAREDVT_FAILURE (op);
11289
11290                                         iargs [0] = sp [0];
11291                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11292                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11293                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11294                                                     field->offset);
11295                                         iargs [4] = sp [1];
11296
11297                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11298                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11299                                                                                            iargs, ip, cfg->real_offset, TRUE);
11300                                                 CHECK_CFG_EXCEPTION;
11301                                                 g_assert (costs > 0);
11302
11303                                                 cfg->real_offset += 5;
11304
11305                                                 inline_costs += costs;
11306                                         } else {
11307                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11308                                         }
11309                                 } else
11310 #endif
11311                                 {
11312                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11313
11314                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11315
11316                                         if (mini_is_gsharedvt_klass (klass)) {
11317                                                 MonoInst *offset_ins;
11318
11319                                                 context_used = mini_class_check_context_used (cfg, klass);
11320
11321                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11322                                                 /* The value is offset by 1 */
11323                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11324                                                 dreg = alloc_ireg_mp (cfg);
11325                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11326                                                 wbarrier_ptr_ins = ins;
11327                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11328                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11329                                         } else {
11330                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11331                                         }
11332                                         if (sp [0]->opcode != OP_LDADDR)
11333                                                 store->flags |= MONO_INST_FAULT;
11334
11335                                         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)) {
11336                                                 if (mini_is_gsharedvt_klass (klass)) {
11337                                                         g_assert (wbarrier_ptr_ins);
11338                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11339                                                 } else {
11340                                                         /* insert call to write barrier */
11341                                                         MonoInst *ptr;
11342                                                         int dreg;
11343
11344                                                         dreg = alloc_ireg_mp (cfg);
11345                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11346                                                         emit_write_barrier (cfg, ptr, sp [1]);
11347                                                 }
11348                                         }
11349
11350                                         store->flags |= ins_flag;
11351                                 }
11352                                 ins_flag = 0;
11353                                 ip += 5;
11354                                 break;
11355                         }
11356
11357 #ifndef DISABLE_REMOTING
11358                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11359                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11360                                 MonoInst *iargs [4];
11361
11362                                 GSHAREDVT_FAILURE (op);
11363
11364                                 iargs [0] = sp [0];
11365                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11366                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11367                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11368                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11369                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11370                                                                                    iargs, ip, cfg->real_offset, TRUE);
11371                                         CHECK_CFG_EXCEPTION;
11372                                         g_assert (costs > 0);
11373
11374                                         cfg->real_offset += 5;
11375
11376                                         *sp++ = iargs [0];
11377
11378                                         inline_costs += costs;
11379                                 } else {
11380                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11381                                         *sp++ = ins;
11382                                 }
11383                         } else
11384 #endif
11385                         if (is_instance) {
11386                                 if (sp [0]->type == STACK_VTYPE) {
11387                                         MonoInst *var;
11388
11389                                         /* Have to compute the address of the variable */
11390
11391                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11392                                         if (!var)
11393                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11394                                         else
11395                                                 g_assert (var->klass == klass);
11396
11397                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11398                                         sp [0] = ins;
11399                                 }
11400
11401                                 if (op == CEE_LDFLDA) {
11402                                         if (sp [0]->type == STACK_OBJ) {
11403                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11404                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11405                                         }
11406
11407                                         dreg = alloc_ireg_mp (cfg);
11408
11409                                         if (mini_is_gsharedvt_klass (klass)) {
11410                                                 MonoInst *offset_ins;
11411
11412                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11413                                                 /* The value is offset by 1 */
11414                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11415                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11416                                         } else {
11417                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11418                                         }
11419                                         ins->klass = mono_class_from_mono_type (field->type);
11420                                         ins->type = STACK_MP;
11421                                         *sp++ = ins;
11422                                 } else {
11423                                         MonoInst *load;
11424
11425                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11426
11427                                         if (mini_is_gsharedvt_klass (klass)) {
11428                                                 MonoInst *offset_ins;
11429
11430                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11431                                                 /* The value is offset by 1 */
11432                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11433                                                 dreg = alloc_ireg_mp (cfg);
11434                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11435                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11436                                         } else {
11437                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11438                                         }
11439                                         load->flags |= ins_flag;
11440                                         if (sp [0]->opcode != OP_LDADDR)
11441                                                 load->flags |= MONO_INST_FAULT;
11442                                         *sp++ = load;
11443                                 }
11444                         }
11445
11446                         if (is_instance) {
11447                                 ins_flag = 0;
11448                                 ip += 5;
11449                                 break;
11450                         }
11451
11452                         /* STATIC CASE */
11453                         context_used = mini_class_check_context_used (cfg, klass);
11454
11455                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11456                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11457                                 CHECK_CFG_ERROR;
11458                         }
11459
11460                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11461                          * to be called here.
11462                          */
11463                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11464                                 mono_class_vtable (cfg->domain, klass);
11465                                 CHECK_TYPELOAD (klass);
11466                         }
11467                         mono_domain_lock (cfg->domain);
11468                         if (cfg->domain->special_static_fields)
11469                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11470                         mono_domain_unlock (cfg->domain);
11471
11472                         is_special_static = mono_class_field_is_special_static (field);
11473
11474                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11475                                 thread_ins = mono_get_thread_intrinsic (cfg);
11476                         else
11477                                 thread_ins = NULL;
11478
11479                         /* Generate IR to compute the field address */
11480                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11481                                 /*
11482                                  * Fast access to TLS data
11483                                  * Inline version of get_thread_static_data () in
11484                                  * threads.c.
11485                                  */
11486                                 guint32 offset;
11487                                 int idx, static_data_reg, array_reg, dreg;
11488
11489                                 GSHAREDVT_FAILURE (op);
11490
11491                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11492                                 static_data_reg = alloc_ireg (cfg);
11493                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11494
11495                                 if (cfg->compile_aot) {
11496                                         int offset_reg, offset2_reg, idx_reg;
11497
11498                                         /* For TLS variables, this will return the TLS offset */
11499                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11500                                         offset_reg = ins->dreg;
11501                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11502                                         idx_reg = alloc_ireg (cfg);
11503                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11504                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11505                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11506                                         array_reg = alloc_ireg (cfg);
11507                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11508                                         offset2_reg = alloc_ireg (cfg);
11509                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11510                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11511                                         dreg = alloc_ireg (cfg);
11512                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11513                                 } else {
11514                                         offset = (gsize)addr & 0x7fffffff;
11515                                         idx = offset & 0x3f;
11516
11517                                         array_reg = alloc_ireg (cfg);
11518                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11519                                         dreg = alloc_ireg (cfg);
11520                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11521                                 }
11522                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11523                                         (cfg->compile_aot && is_special_static) ||
11524                                         (context_used && is_special_static)) {
11525                                 MonoInst *iargs [2];
11526
11527                                 g_assert (field->parent);
11528                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11529                                 if (context_used) {
11530                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11531                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11532                                 } else {
11533                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11534                                 }
11535                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11536                         } else if (context_used) {
11537                                 MonoInst *static_data;
11538
11539                                 /*
11540                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11541                                         method->klass->name_space, method->klass->name, method->name,
11542                                         depth, field->offset);
11543                                 */
11544
11545                                 if (mono_class_needs_cctor_run (klass, method))
11546                                         emit_class_init (cfg, klass);
11547
11548                                 /*
11549                                  * The pointer we're computing here is
11550                                  *
11551                                  *   super_info.static_data + field->offset
11552                                  */
11553                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11554                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11555
11556                                 if (mini_is_gsharedvt_klass (klass)) {
11557                                         MonoInst *offset_ins;
11558
11559                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11560                                         /* The value is offset by 1 */
11561                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11562                                         dreg = alloc_ireg_mp (cfg);
11563                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11564                                 } else if (field->offset == 0) {
11565                                         ins = static_data;
11566                                 } else {
11567                                         int addr_reg = mono_alloc_preg (cfg);
11568                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11569                                 }
11570                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11571                                 MonoInst *iargs [2];
11572
11573                                 g_assert (field->parent);
11574                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11575                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11576                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11577                         } else {
11578                                 MonoVTable *vtable = NULL;
11579
11580                                 if (!cfg->compile_aot)
11581                                         vtable = mono_class_vtable (cfg->domain, klass);
11582                                 CHECK_TYPELOAD (klass);
11583
11584                                 if (!addr) {
11585                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11586                                                 if (!(g_slist_find (class_inits, klass))) {
11587                                                         emit_class_init (cfg, klass);
11588                                                         if (cfg->verbose_level > 2)
11589                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11590                                                         class_inits = g_slist_prepend (class_inits, klass);
11591                                                 }
11592                                         } else {
11593                                                 if (cfg->run_cctors) {
11594                                                         /* This makes so that inline cannot trigger */
11595                                                         /* .cctors: too many apps depend on them */
11596                                                         /* running with a specific order... */
11597                                                         g_assert (vtable);
11598                                                         if (! vtable->initialized)
11599                                                                 INLINE_FAILURE ("class init");
11600                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11601                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11602                                                                 goto exception_exit;
11603                                                         }
11604                                                 }
11605                                         }
11606                                         if (cfg->compile_aot)
11607                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11608                                         else {
11609                                                 g_assert (vtable);
11610                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11611                                                 g_assert (addr);
11612                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11613                                         }
11614                                 } else {
11615                                         MonoInst *iargs [1];
11616                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11617                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11618                                 }
11619                         }
11620
11621                         /* Generate IR to do the actual load/store operation */
11622
11623                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11624                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11625                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11626                         }
11627
11628                         if (op == CEE_LDSFLDA) {
11629                                 ins->klass = mono_class_from_mono_type (ftype);
11630                                 ins->type = STACK_PTR;
11631                                 *sp++ = ins;
11632                         } else if (op == CEE_STSFLD) {
11633                                 MonoInst *store;
11634
11635                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11636                                 store->flags |= ins_flag;
11637                         } else {
11638                                 gboolean is_const = FALSE;
11639                                 MonoVTable *vtable = NULL;
11640                                 gpointer addr = NULL;
11641
11642                                 if (!context_used) {
11643                                         vtable = mono_class_vtable (cfg->domain, klass);
11644                                         CHECK_TYPELOAD (klass);
11645                                 }
11646                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11647                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11648                                         int ro_type = ftype->type;
11649                                         if (!addr)
11650                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11651                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11652                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11653                                         }
11654
11655                                         GSHAREDVT_FAILURE (op);
11656
11657                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11658                                         is_const = TRUE;
11659                                         switch (ro_type) {
11660                                         case MONO_TYPE_BOOLEAN:
11661                                         case MONO_TYPE_U1:
11662                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11663                                                 sp++;
11664                                                 break;
11665                                         case MONO_TYPE_I1:
11666                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11667                                                 sp++;
11668                                                 break;
11669                                         case MONO_TYPE_CHAR:
11670                                         case MONO_TYPE_U2:
11671                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11672                                                 sp++;
11673                                                 break;
11674                                         case MONO_TYPE_I2:
11675                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11676                                                 sp++;
11677                                                 break;
11678                                                 break;
11679                                         case MONO_TYPE_I4:
11680                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11681                                                 sp++;
11682                                                 break;
11683                                         case MONO_TYPE_U4:
11684                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11685                                                 sp++;
11686                                                 break;
11687                                         case MONO_TYPE_I:
11688                                         case MONO_TYPE_U:
11689                                         case MONO_TYPE_PTR:
11690                                         case MONO_TYPE_FNPTR:
11691                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11692                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11693                                                 sp++;
11694                                                 break;
11695                                         case MONO_TYPE_STRING:
11696                                         case MONO_TYPE_OBJECT:
11697                                         case MONO_TYPE_CLASS:
11698                                         case MONO_TYPE_SZARRAY:
11699                                         case MONO_TYPE_ARRAY:
11700                                                 if (!mono_gc_is_moving ()) {
11701                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11702                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11703                                                         sp++;
11704                                                 } else {
11705                                                         is_const = FALSE;
11706                                                 }
11707                                                 break;
11708                                         case MONO_TYPE_I8:
11709                                         case MONO_TYPE_U8:
11710                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11711                                                 sp++;
11712                                                 break;
11713                                         case MONO_TYPE_R4:
11714                                         case MONO_TYPE_R8:
11715                                         case MONO_TYPE_VALUETYPE:
11716                                         default:
11717                                                 is_const = FALSE;
11718                                                 break;
11719                                         }
11720                                 }
11721
11722                                 if (!is_const) {
11723                                         MonoInst *load;
11724
11725                                         CHECK_STACK_OVF (1);
11726
11727                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11728                                         load->flags |= ins_flag;
11729                                         ins_flag = 0;
11730                                         *sp++ = load;
11731                                 }
11732                         }
11733
11734                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11735                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11736                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11737                         }
11738
11739                         ins_flag = 0;
11740                         ip += 5;
11741                         break;
11742                 }
11743                 case CEE_STOBJ:
11744                         CHECK_STACK (2);
11745                         sp -= 2;
11746                         CHECK_OPSIZE (5);
11747                         token = read32 (ip + 1);
11748                         klass = mini_get_class (method, token, generic_context);
11749                         CHECK_TYPELOAD (klass);
11750                         if (ins_flag & MONO_INST_VOLATILE) {
11751                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11752                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11753                         }
11754                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11755                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11756                         ins->flags |= ins_flag;
11757                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11758                                         generic_class_is_reference_type (cfg, klass)) {
11759                                 /* insert call to write barrier */
11760                                 emit_write_barrier (cfg, sp [0], sp [1]);
11761                         }
11762                         ins_flag = 0;
11763                         ip += 5;
11764                         inline_costs += 1;
11765                         break;
11766
11767                         /*
11768                          * Array opcodes
11769                          */
11770                 case CEE_NEWARR: {
11771                         MonoInst *len_ins;
11772                         const char *data_ptr;
11773                         int data_size = 0;
11774                         guint32 field_token;
11775
11776                         CHECK_STACK (1);
11777                         --sp;
11778
11779                         CHECK_OPSIZE (5);
11780                         token = read32 (ip + 1);
11781
11782                         klass = mini_get_class (method, token, generic_context);
11783                         CHECK_TYPELOAD (klass);
11784
11785                         context_used = mini_class_check_context_used (cfg, klass);
11786
11787                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11788                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11789                                 ins->sreg1 = sp [0]->dreg;
11790                                 ins->type = STACK_I4;
11791                                 ins->dreg = alloc_ireg (cfg);
11792                                 MONO_ADD_INS (cfg->cbb, ins);
11793                                 *sp = mono_decompose_opcode (cfg, ins);
11794                         }
11795
11796                         if (context_used) {
11797                                 MonoInst *args [3];
11798                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11799                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11800
11801                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11802
11803                                 /* vtable */
11804                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11805                                         array_class, MONO_RGCTX_INFO_VTABLE);
11806                                 /* array len */
11807                                 args [1] = sp [0];
11808
11809                                 if (managed_alloc)
11810                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11811                                 else
11812                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11813                         } else {
11814                                 if (cfg->opt & MONO_OPT_SHARED) {
11815                                         /* Decompose now to avoid problems with references to the domainvar */
11816                                         MonoInst *iargs [3];
11817
11818                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11819                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11820                                         iargs [2] = sp [0];
11821
11822                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11823                                 } else {
11824                                         /* Decompose later since it is needed by abcrem */
11825                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11826                                         mono_class_vtable (cfg->domain, array_type);
11827                                         CHECK_TYPELOAD (array_type);
11828
11829                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11830                                         ins->dreg = alloc_ireg_ref (cfg);
11831                                         ins->sreg1 = sp [0]->dreg;
11832                                         ins->inst_newa_class = klass;
11833                                         ins->type = STACK_OBJ;
11834                                         ins->klass = array_type;
11835                                         MONO_ADD_INS (cfg->cbb, ins);
11836                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11837                                         cfg->cbb->has_array_access = TRUE;
11838
11839                                         /* Needed so mono_emit_load_get_addr () gets called */
11840                                         mono_get_got_var (cfg);
11841                                 }
11842                         }
11843
11844                         len_ins = sp [0];
11845                         ip += 5;
11846                         *sp++ = ins;
11847                         inline_costs += 1;
11848
11849                         /*
11850                          * we inline/optimize the initialization sequence if possible.
11851                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11852                          * for small sizes open code the memcpy
11853                          * ensure the rva field is big enough
11854                          */
11855                         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))) {
11856                                 MonoMethod *memcpy_method = get_memcpy_method ();
11857                                 MonoInst *iargs [3];
11858                                 int add_reg = alloc_ireg_mp (cfg);
11859
11860                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11861                                 if (cfg->compile_aot) {
11862                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11863                                 } else {
11864                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11865                                 }
11866                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11867                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11868                                 ip += 11;
11869                         }
11870
11871                         break;
11872                 }
11873                 case CEE_LDLEN:
11874                         CHECK_STACK (1);
11875                         --sp;
11876                         if (sp [0]->type != STACK_OBJ)
11877                                 UNVERIFIED;
11878
11879                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11880                         ins->dreg = alloc_preg (cfg);
11881                         ins->sreg1 = sp [0]->dreg;
11882                         ins->type = STACK_I4;
11883                         /* This flag will be inherited by the decomposition */
11884                         ins->flags |= MONO_INST_FAULT;
11885                         MONO_ADD_INS (cfg->cbb, ins);
11886                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11887                         cfg->cbb->has_array_access = TRUE;
11888                         ip ++;
11889                         *sp++ = ins;
11890                         break;
11891                 case CEE_LDELEMA:
11892                         CHECK_STACK (2);
11893                         sp -= 2;
11894                         CHECK_OPSIZE (5);
11895                         if (sp [0]->type != STACK_OBJ)
11896                                 UNVERIFIED;
11897
11898                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11899
11900                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11901                         CHECK_TYPELOAD (klass);
11902                         /* we need to make sure that this array is exactly the type it needs
11903                          * to be for correctness. the wrappers are lax with their usage
11904                          * so we need to ignore them here
11905                          */
11906                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11907                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11908                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11909                                 CHECK_TYPELOAD (array_class);
11910                         }
11911
11912                         readonly = FALSE;
11913                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11914                         *sp++ = ins;
11915                         ip += 5;
11916                         break;
11917                 case CEE_LDELEM:
11918                 case CEE_LDELEM_I1:
11919                 case CEE_LDELEM_U1:
11920                 case CEE_LDELEM_I2:
11921                 case CEE_LDELEM_U2:
11922                 case CEE_LDELEM_I4:
11923                 case CEE_LDELEM_U4:
11924                 case CEE_LDELEM_I8:
11925                 case CEE_LDELEM_I:
11926                 case CEE_LDELEM_R4:
11927                 case CEE_LDELEM_R8:
11928                 case CEE_LDELEM_REF: {
11929                         MonoInst *addr;
11930
11931                         CHECK_STACK (2);
11932                         sp -= 2;
11933
11934                         if (*ip == CEE_LDELEM) {
11935                                 CHECK_OPSIZE (5);
11936                                 token = read32 (ip + 1);
11937                                 klass = mini_get_class (method, token, generic_context);
11938                                 CHECK_TYPELOAD (klass);
11939                                 mono_class_init (klass);
11940                         }
11941                         else
11942                                 klass = array_access_to_klass (*ip);
11943
11944                         if (sp [0]->type != STACK_OBJ)
11945                                 UNVERIFIED;
11946
11947                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11948
11949                         if (mini_is_gsharedvt_variable_klass (klass)) {
11950                                 // FIXME-VT: OP_ICONST optimization
11951                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11952                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11953                                 ins->opcode = OP_LOADV_MEMBASE;
11954                         } else if (sp [1]->opcode == OP_ICONST) {
11955                                 int array_reg = sp [0]->dreg;
11956                                 int index_reg = sp [1]->dreg;
11957                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
11958
11959                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
11960                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
11961
11962                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
11963                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
11964                         } else {
11965                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11966                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11967                         }
11968                         *sp++ = ins;
11969                         if (*ip == CEE_LDELEM)
11970                                 ip += 5;
11971                         else
11972                                 ++ip;
11973                         break;
11974                 }
11975                 case CEE_STELEM_I:
11976                 case CEE_STELEM_I1:
11977                 case CEE_STELEM_I2:
11978                 case CEE_STELEM_I4:
11979                 case CEE_STELEM_I8:
11980                 case CEE_STELEM_R4:
11981                 case CEE_STELEM_R8:
11982                 case CEE_STELEM_REF:
11983                 case CEE_STELEM: {
11984                         CHECK_STACK (3);
11985                         sp -= 3;
11986
11987                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11988
11989                         if (*ip == CEE_STELEM) {
11990                                 CHECK_OPSIZE (5);
11991                                 token = read32 (ip + 1);
11992                                 klass = mini_get_class (method, token, generic_context);
11993                                 CHECK_TYPELOAD (klass);
11994                                 mono_class_init (klass);
11995                         }
11996                         else
11997                                 klass = array_access_to_klass (*ip);
11998
11999                         if (sp [0]->type != STACK_OBJ)
12000                                 UNVERIFIED;
12001
12002                         emit_array_store (cfg, klass, sp, TRUE);
12003
12004                         if (*ip == CEE_STELEM)
12005                                 ip += 5;
12006                         else
12007                                 ++ip;
12008                         inline_costs += 1;
12009                         break;
12010                 }
12011                 case CEE_CKFINITE: {
12012                         CHECK_STACK (1);
12013                         --sp;
12014
12015                         if (cfg->llvm_only) {
12016                                 MonoInst *iargs [1];
12017
12018                                 iargs [0] = sp [0];
12019                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12020                         } else  {
12021                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12022                                 ins->sreg1 = sp [0]->dreg;
12023                                 ins->dreg = alloc_freg (cfg);
12024                                 ins->type = STACK_R8;
12025                                 MONO_ADD_INS (cfg->cbb, ins);
12026
12027                                 *sp++ = mono_decompose_opcode (cfg, ins);
12028                         }
12029
12030                         ++ip;
12031                         break;
12032                 }
12033                 case CEE_REFANYVAL: {
12034                         MonoInst *src_var, *src;
12035
12036                         int klass_reg = alloc_preg (cfg);
12037                         int dreg = alloc_preg (cfg);
12038
12039                         GSHAREDVT_FAILURE (*ip);
12040
12041                         CHECK_STACK (1);
12042                         MONO_INST_NEW (cfg, ins, *ip);
12043                         --sp;
12044                         CHECK_OPSIZE (5);
12045                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12046                         CHECK_TYPELOAD (klass);
12047
12048                         context_used = mini_class_check_context_used (cfg, klass);
12049
12050                         // FIXME:
12051                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12052                         if (!src_var)
12053                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12054                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12055                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12056
12057                         if (context_used) {
12058                                 MonoInst *klass_ins;
12059
12060                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12061                                                 klass, MONO_RGCTX_INFO_KLASS);
12062
12063                                 // FIXME:
12064                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12065                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12066                         } else {
12067                                 mini_emit_class_check (cfg, klass_reg, klass);
12068                         }
12069                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12070                         ins->type = STACK_MP;
12071                         ins->klass = klass;
12072                         *sp++ = ins;
12073                         ip += 5;
12074                         break;
12075                 }
12076                 case CEE_MKREFANY: {
12077                         MonoInst *loc, *addr;
12078
12079                         GSHAREDVT_FAILURE (*ip);
12080
12081                         CHECK_STACK (1);
12082                         MONO_INST_NEW (cfg, ins, *ip);
12083                         --sp;
12084                         CHECK_OPSIZE (5);
12085                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12086                         CHECK_TYPELOAD (klass);
12087
12088                         context_used = mini_class_check_context_used (cfg, klass);
12089
12090                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12091                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12092
12093                         if (context_used) {
12094                                 MonoInst *const_ins;
12095                                 int type_reg = alloc_preg (cfg);
12096
12097                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12098                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12099                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12100                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12101                         } else if (cfg->compile_aot) {
12102                                 int const_reg = alloc_preg (cfg);
12103                                 int type_reg = alloc_preg (cfg);
12104
12105                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12106                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12107                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12108                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12109                         } else {
12110                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12111                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12112                         }
12113                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12114
12115                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12116                         ins->type = STACK_VTYPE;
12117                         ins->klass = mono_defaults.typed_reference_class;
12118                         *sp++ = ins;
12119                         ip += 5;
12120                         break;
12121                 }
12122                 case CEE_LDTOKEN: {
12123                         gpointer handle;
12124                         MonoClass *handle_class;
12125
12126                         CHECK_STACK_OVF (1);
12127
12128                         CHECK_OPSIZE (5);
12129                         n = read32 (ip + 1);
12130
12131                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12132                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12133                                 handle = mono_method_get_wrapper_data (method, n);
12134                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12135                                 if (handle_class == mono_defaults.typehandle_class)
12136                                         handle = &((MonoClass*)handle)->byval_arg;
12137                         }
12138                         else {
12139                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12140                                 CHECK_CFG_ERROR;
12141                         }
12142                         if (!handle)
12143                                 LOAD_ERROR;
12144                         mono_class_init (handle_class);
12145                         if (cfg->gshared) {
12146                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12147                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12148                                         /* This case handles ldtoken
12149                                            of an open type, like for
12150                                            typeof(Gen<>). */
12151                                         context_used = 0;
12152                                 } else if (handle_class == mono_defaults.typehandle_class) {
12153                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12154                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12155                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12156                                 else if (handle_class == mono_defaults.methodhandle_class)
12157                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12158                                 else
12159                                         g_assert_not_reached ();
12160                         }
12161
12162                         if ((cfg->opt & MONO_OPT_SHARED) &&
12163                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12164                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12165                                 MonoInst *addr, *vtvar, *iargs [3];
12166                                 int method_context_used;
12167
12168                                 method_context_used = mini_method_check_context_used (cfg, method);
12169
12170                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12171
12172                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12173                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12174                                 if (method_context_used) {
12175                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12176                                                 method, MONO_RGCTX_INFO_METHOD);
12177                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12178                                 } else {
12179                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12180                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12181                                 }
12182                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12183
12184                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12185
12186                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12187                         } else {
12188                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12189                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12190                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12191                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12192                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12193                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12194
12195                                         mono_class_init (tclass);
12196                                         if (context_used) {
12197                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12198                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12199                                         } else if (cfg->compile_aot) {
12200                                                 if (method->wrapper_type) {
12201                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12202                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12203                                                                 /* Special case for static synchronized wrappers */
12204                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12205                                                         } else {
12206                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12207                                                                 /* FIXME: n is not a normal token */
12208                                                                 DISABLE_AOT (cfg);
12209                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12210                                                         }
12211                                                 } else {
12212                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12213                                                 }
12214                                         } else {
12215                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12216                                                 CHECK_CFG_ERROR;
12217                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12218                                         }
12219                                         ins->type = STACK_OBJ;
12220                                         ins->klass = cmethod->klass;
12221                                         ip += 5;
12222                                 } else {
12223                                         MonoInst *addr, *vtvar;
12224
12225                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12226
12227                                         if (context_used) {
12228                                                 if (handle_class == mono_defaults.typehandle_class) {
12229                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12230                                                                         mono_class_from_mono_type ((MonoType *)handle),
12231                                                                         MONO_RGCTX_INFO_TYPE);
12232                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12233                                                         ins = emit_get_rgctx_method (cfg, context_used,
12234                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12235                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12236                                                         ins = emit_get_rgctx_field (cfg, context_used,
12237                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12238                                                 } else {
12239                                                         g_assert_not_reached ();
12240                                                 }
12241                                         } else if (cfg->compile_aot) {
12242                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12243                                         } else {
12244                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12245                                         }
12246                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12247                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12248                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12249                                 }
12250                         }
12251
12252                         *sp++ = ins;
12253                         ip += 5;
12254                         break;
12255                 }
12256                 case CEE_THROW:
12257                         CHECK_STACK (1);
12258                         MONO_INST_NEW (cfg, ins, OP_THROW);
12259                         --sp;
12260                         ins->sreg1 = sp [0]->dreg;
12261                         ip++;
12262                         cfg->cbb->out_of_line = TRUE;
12263                         MONO_ADD_INS (cfg->cbb, ins);
12264                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12265                         MONO_ADD_INS (cfg->cbb, ins);
12266                         sp = stack_start;
12267
12268                         link_bblock (cfg, cfg->cbb, end_bblock);
12269                         start_new_bblock = 1;
12270                         /* This can complicate code generation for llvm since the return value might not be defined */
12271                         if (COMPILE_LLVM (cfg))
12272                                 INLINE_FAILURE ("throw");
12273                         break;
12274                 case CEE_ENDFINALLY:
12275                         /* mono_save_seq_point_info () depends on this */
12276                         if (sp != stack_start)
12277                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12278                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12279                         MONO_ADD_INS (cfg->cbb, ins);
12280                         ip++;
12281                         start_new_bblock = 1;
12282
12283                         /*
12284                          * Control will leave the method so empty the stack, otherwise
12285                          * the next basic block will start with a nonempty stack.
12286                          */
12287                         while (sp != stack_start) {
12288                                 sp--;
12289                         }
12290                         break;
12291                 case CEE_LEAVE:
12292                 case CEE_LEAVE_S: {
12293                         GList *handlers;
12294
12295                         if (*ip == CEE_LEAVE) {
12296                                 CHECK_OPSIZE (5);
12297                                 target = ip + 5 + (gint32)read32(ip + 1);
12298                         } else {
12299                                 CHECK_OPSIZE (2);
12300                                 target = ip + 2 + (signed char)(ip [1]);
12301                         }
12302
12303                         /* empty the stack */
12304                         while (sp != stack_start) {
12305                                 sp--;
12306                         }
12307
12308                         /*
12309                          * If this leave statement is in a catch block, check for a
12310                          * pending exception, and rethrow it if necessary.
12311                          * We avoid doing this in runtime invoke wrappers, since those are called
12312                          * by native code which excepts the wrapper to catch all exceptions.
12313                          */
12314                         for (i = 0; i < header->num_clauses; ++i) {
12315                                 MonoExceptionClause *clause = &header->clauses [i];
12316
12317                                 /*
12318                                  * Use <= in the final comparison to handle clauses with multiple
12319                                  * leave statements, like in bug #78024.
12320                                  * The ordering of the exception clauses guarantees that we find the
12321                                  * innermost clause.
12322                                  */
12323                                 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) {
12324                                         MonoInst *exc_ins;
12325                                         MonoBasicBlock *dont_throw;
12326
12327                                         /*
12328                                           MonoInst *load;
12329
12330                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12331                                         */
12332
12333                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12334
12335                                         NEW_BBLOCK (cfg, dont_throw);
12336
12337                                         /*
12338                                          * Currently, we always rethrow the abort exception, despite the
12339                                          * fact that this is not correct. See thread6.cs for an example.
12340                                          * But propagating the abort exception is more important than
12341                                          * getting the sematics right.
12342                                          */
12343                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12344                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12345                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12346
12347                                         MONO_START_BB (cfg, dont_throw);
12348                                 }
12349                         }
12350
12351 #ifdef ENABLE_LLVM
12352                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12353 #endif
12354
12355                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12356                                 GList *tmp;
12357                                 MonoExceptionClause *clause;
12358
12359                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12360                                         clause = (MonoExceptionClause *)tmp->data;
12361                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12362                                         g_assert (tblock);
12363                                         link_bblock (cfg, cfg->cbb, tblock);
12364                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12365                                         ins->inst_target_bb = tblock;
12366                                         ins->inst_eh_block = clause;
12367                                         MONO_ADD_INS (cfg->cbb, ins);
12368                                         cfg->cbb->has_call_handler = 1;
12369                                         if (COMPILE_LLVM (cfg)) {
12370                                                 MonoBasicBlock *target_bb;
12371
12372                                                 /*
12373                                                  * Link the finally bblock with the target, since it will
12374                                                  * conceptually branch there.
12375                                                  */
12376                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12377                                                 GET_BBLOCK (cfg, target_bb, target);
12378                                                 link_bblock (cfg, tblock, target_bb);
12379                                         }
12380                                 }
12381                                 g_list_free (handlers);
12382                         }
12383
12384                         MONO_INST_NEW (cfg, ins, OP_BR);
12385                         MONO_ADD_INS (cfg->cbb, ins);
12386                         GET_BBLOCK (cfg, tblock, target);
12387                         link_bblock (cfg, cfg->cbb, tblock);
12388                         ins->inst_target_bb = tblock;
12389
12390                         start_new_bblock = 1;
12391
12392                         if (*ip == CEE_LEAVE)
12393                                 ip += 5;
12394                         else
12395                                 ip += 2;
12396
12397                         break;
12398                 }
12399
12400                         /*
12401                          * Mono specific opcodes
12402                          */
12403                 case MONO_CUSTOM_PREFIX: {
12404
12405                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12406
12407                         CHECK_OPSIZE (2);
12408                         switch (ip [1]) {
12409                         case CEE_MONO_ICALL: {
12410                                 gpointer func;
12411                                 MonoJitICallInfo *info;
12412
12413                                 token = read32 (ip + 2);
12414                                 func = mono_method_get_wrapper_data (method, token);
12415                                 info = mono_find_jit_icall_by_addr (func);
12416                                 if (!info)
12417                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12418                                 g_assert (info);
12419
12420                                 CHECK_STACK (info->sig->param_count);
12421                                 sp -= info->sig->param_count;
12422
12423                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12424                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12425                                         *sp++ = ins;
12426
12427                                 ip += 6;
12428                                 inline_costs += 10 * num_calls++;
12429
12430                                 break;
12431                         }
12432                         case CEE_MONO_LDPTR_CARD_TABLE:
12433                         case CEE_MONO_LDPTR_NURSERY_START:
12434                         case CEE_MONO_LDPTR_NURSERY_BITS:
12435                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12436                                 CHECK_STACK_OVF (1);
12437
12438                                 switch (ip [1]) {
12439                                         case CEE_MONO_LDPTR_CARD_TABLE:
12440                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12441                                                 break;
12442                                         case CEE_MONO_LDPTR_NURSERY_START:
12443                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12444                                                 break;
12445                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12446                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12447                                                 break;
12448                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12449                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12450                                                 break;
12451                                 }
12452
12453                                 *sp++ = ins;
12454                                 ip += 2;
12455                                 inline_costs += 10 * num_calls++;
12456                                 break;
12457                         }
12458                         case CEE_MONO_LDPTR: {
12459                                 gpointer ptr;
12460
12461                                 CHECK_STACK_OVF (1);
12462                                 CHECK_OPSIZE (6);
12463                                 token = read32 (ip + 2);
12464
12465                                 ptr = mono_method_get_wrapper_data (method, token);
12466                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12467                                 *sp++ = ins;
12468                                 ip += 6;
12469                                 inline_costs += 10 * num_calls++;
12470                                 /* Can't embed random pointers into AOT code */
12471                                 DISABLE_AOT (cfg);
12472                                 break;
12473                         }
12474                         case CEE_MONO_JIT_ICALL_ADDR: {
12475                                 MonoJitICallInfo *callinfo;
12476                                 gpointer ptr;
12477
12478                                 CHECK_STACK_OVF (1);
12479                                 CHECK_OPSIZE (6);
12480                                 token = read32 (ip + 2);
12481
12482                                 ptr = mono_method_get_wrapper_data (method, token);
12483                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12484                                 g_assert (callinfo);
12485                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12486                                 *sp++ = ins;
12487                                 ip += 6;
12488                                 inline_costs += 10 * num_calls++;
12489                                 break;
12490                         }
12491                         case CEE_MONO_ICALL_ADDR: {
12492                                 MonoMethod *cmethod;
12493                                 gpointer ptr;
12494
12495                                 CHECK_STACK_OVF (1);
12496                                 CHECK_OPSIZE (6);
12497                                 token = read32 (ip + 2);
12498
12499                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12500
12501                                 if (cfg->compile_aot) {
12502                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12503                                 } else {
12504                                         ptr = mono_lookup_internal_call (cmethod);
12505                                         g_assert (ptr);
12506                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12507                                 }
12508                                 *sp++ = ins;
12509                                 ip += 6;
12510                                 break;
12511                         }
12512                         case CEE_MONO_VTADDR: {
12513                                 MonoInst *src_var, *src;
12514
12515                                 CHECK_STACK (1);
12516                                 --sp;
12517
12518                                 // FIXME:
12519                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12520                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12521                                 *sp++ = src;
12522                                 ip += 2;
12523                                 break;
12524                         }
12525                         case CEE_MONO_NEWOBJ: {
12526                                 MonoInst *iargs [2];
12527
12528                                 CHECK_STACK_OVF (1);
12529                                 CHECK_OPSIZE (6);
12530                                 token = read32 (ip + 2);
12531                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12532                                 mono_class_init (klass);
12533                                 NEW_DOMAINCONST (cfg, iargs [0]);
12534                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12535                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12536                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12537                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12538                                 ip += 6;
12539                                 inline_costs += 10 * num_calls++;
12540                                 break;
12541                         }
12542                         case CEE_MONO_OBJADDR:
12543                                 CHECK_STACK (1);
12544                                 --sp;
12545                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12546                                 ins->dreg = alloc_ireg_mp (cfg);
12547                                 ins->sreg1 = sp [0]->dreg;
12548                                 ins->type = STACK_MP;
12549                                 MONO_ADD_INS (cfg->cbb, ins);
12550                                 *sp++ = ins;
12551                                 ip += 2;
12552                                 break;
12553                         case CEE_MONO_LDNATIVEOBJ:
12554                                 /*
12555                                  * Similar to LDOBJ, but instead load the unmanaged
12556                                  * representation of the vtype to the stack.
12557                                  */
12558                                 CHECK_STACK (1);
12559                                 CHECK_OPSIZE (6);
12560                                 --sp;
12561                                 token = read32 (ip + 2);
12562                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12563                                 g_assert (klass->valuetype);
12564                                 mono_class_init (klass);
12565
12566                                 {
12567                                         MonoInst *src, *dest, *temp;
12568
12569                                         src = sp [0];
12570                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12571                                         temp->backend.is_pinvoke = 1;
12572                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12573                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12574
12575                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12576                                         dest->type = STACK_VTYPE;
12577                                         dest->klass = klass;
12578
12579                                         *sp ++ = dest;
12580                                         ip += 6;
12581                                 }
12582                                 break;
12583                         case CEE_MONO_RETOBJ: {
12584                                 /*
12585                                  * Same as RET, but return the native representation of a vtype
12586                                  * to the caller.
12587                                  */
12588                                 g_assert (cfg->ret);
12589                                 g_assert (mono_method_signature (method)->pinvoke);
12590                                 CHECK_STACK (1);
12591                                 --sp;
12592
12593                                 CHECK_OPSIZE (6);
12594                                 token = read32 (ip + 2);
12595                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12596
12597                                 if (!cfg->vret_addr) {
12598                                         g_assert (cfg->ret_var_is_local);
12599
12600                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12601                                 } else {
12602                                         EMIT_NEW_RETLOADA (cfg, ins);
12603                                 }
12604                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12605
12606                                 if (sp != stack_start)
12607                                         UNVERIFIED;
12608
12609                                 MONO_INST_NEW (cfg, ins, OP_BR);
12610                                 ins->inst_target_bb = end_bblock;
12611                                 MONO_ADD_INS (cfg->cbb, ins);
12612                                 link_bblock (cfg, cfg->cbb, end_bblock);
12613                                 start_new_bblock = 1;
12614                                 ip += 6;
12615                                 break;
12616                         }
12617                         case CEE_MONO_CISINST:
12618                         case CEE_MONO_CCASTCLASS: {
12619                                 int token;
12620                                 CHECK_STACK (1);
12621                                 --sp;
12622                                 CHECK_OPSIZE (6);
12623                                 token = read32 (ip + 2);
12624                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12625                                 if (ip [1] == CEE_MONO_CISINST)
12626                                         ins = handle_cisinst (cfg, klass, sp [0]);
12627                                 else
12628                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12629                                 *sp++ = ins;
12630                                 ip += 6;
12631                                 break;
12632                         }
12633                         case CEE_MONO_SAVE_LMF:
12634                         case CEE_MONO_RESTORE_LMF:
12635                                 ip += 2;
12636                                 break;
12637                         case CEE_MONO_CLASSCONST:
12638                                 CHECK_STACK_OVF (1);
12639                                 CHECK_OPSIZE (6);
12640                                 token = read32 (ip + 2);
12641                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12642                                 *sp++ = ins;
12643                                 ip += 6;
12644                                 inline_costs += 10 * num_calls++;
12645                                 break;
12646                         case CEE_MONO_NOT_TAKEN:
12647                                 cfg->cbb->out_of_line = TRUE;
12648                                 ip += 2;
12649                                 break;
12650                         case CEE_MONO_TLS: {
12651                                 MonoTlsKey key;
12652
12653                                 CHECK_STACK_OVF (1);
12654                                 CHECK_OPSIZE (6);
12655                                 key = (MonoTlsKey)read32 (ip + 2);
12656                                 g_assert (key < TLS_KEY_NUM);
12657
12658                                 ins = mono_create_tls_get (cfg, key);
12659                                 if (!ins) {
12660                                         if (cfg->compile_aot) {
12661                                                 DISABLE_AOT (cfg);
12662                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12663                                                 ins->dreg = alloc_preg (cfg);
12664                                                 ins->type = STACK_PTR;
12665                                         } else {
12666                                                 g_assert_not_reached ();
12667                                         }
12668                                 }
12669                                 ins->type = STACK_PTR;
12670                                 MONO_ADD_INS (cfg->cbb, ins);
12671                                 *sp++ = ins;
12672                                 ip += 6;
12673                                 break;
12674                         }
12675                         case CEE_MONO_DYN_CALL: {
12676                                 MonoCallInst *call;
12677
12678                                 /* It would be easier to call a trampoline, but that would put an
12679                                  * extra frame on the stack, confusing exception handling. So
12680                                  * implement it inline using an opcode for now.
12681                                  */
12682
12683                                 if (!cfg->dyn_call_var) {
12684                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12685                                         /* prevent it from being register allocated */
12686                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12687                                 }
12688
12689                                 /* Has to use a call inst since it local regalloc expects it */
12690                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12691                                 ins = (MonoInst*)call;
12692                                 sp -= 2;
12693                                 ins->sreg1 = sp [0]->dreg;
12694                                 ins->sreg2 = sp [1]->dreg;
12695                                 MONO_ADD_INS (cfg->cbb, ins);
12696
12697                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12698
12699                                 ip += 2;
12700                                 inline_costs += 10 * num_calls++;
12701
12702                                 break;
12703                         }
12704                         case CEE_MONO_MEMORY_BARRIER: {
12705                                 CHECK_OPSIZE (6);
12706                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12707                                 ip += 6;
12708                                 break;
12709                         }
12710                         case CEE_MONO_ATOMIC_STORE_I4: {
12711                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12712
12713                                 CHECK_OPSIZE (6);
12714                                 CHECK_STACK (2);
12715                                 sp -= 2;
12716
12717                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12718                                 ins->dreg = sp [0]->dreg;
12719                                 ins->sreg1 = sp [1]->dreg;
12720                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12721                                 MONO_ADD_INS (cfg->cbb, ins);
12722
12723                                 ip += 6;
12724                                 break;
12725                         }
12726                         case CEE_MONO_JIT_ATTACH: {
12727                                 MonoInst *args [16], *domain_ins;
12728                                 MonoInst *ad_ins, *jit_tls_ins;
12729                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12730
12731                                 g_assert (!mono_threads_is_coop_enabled ());
12732
12733                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12734
12735                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12736                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12737
12738                                 ad_ins = mono_get_domain_intrinsic (cfg);
12739                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12740
12741                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12742                                         NEW_BBLOCK (cfg, next_bb);
12743                                         NEW_BBLOCK (cfg, call_bb);
12744
12745                                         if (cfg->compile_aot) {
12746                                                 /* AOT code is only used in the root domain */
12747                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12748                                         } else {
12749                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12750                                         }
12751                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12752                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12753                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12754
12755                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12756                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12757                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12758
12759                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12760                                         MONO_START_BB (cfg, call_bb);
12761                                 }
12762
12763                                 /* AOT code is only used in the root domain */
12764                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12765                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12766                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12767
12768                                 if (next_bb)
12769                                         MONO_START_BB (cfg, next_bb);
12770
12771
12772                                 ip += 2;
12773                                 break;
12774                         }
12775                         case CEE_MONO_JIT_DETACH: {
12776                                 MonoInst *args [16];
12777
12778                                 /* Restore the original domain */
12779                                 dreg = alloc_ireg (cfg);
12780                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12781                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12782                                 ip += 2;
12783                                 break;
12784                         }
12785                         case CEE_MONO_CALLI_EXTRA_ARG: {
12786                                 MonoInst *addr;
12787                                 MonoMethodSignature *fsig;
12788                                 MonoInst *arg;
12789
12790                                 /*
12791                                  * This is the same as CEE_CALLI, but passes an additional argument
12792                                  * to the called method in llvmonly mode.
12793                                  * This is only used by delegate invoke wrappers to call the
12794                                  * actual delegate method.
12795                                  */
12796                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12797
12798                                 CHECK_OPSIZE (6);
12799                                 token = read32 (ip + 2);
12800
12801                                 ins = NULL;
12802
12803                                 cmethod = NULL;
12804                                 CHECK_STACK (1);
12805                                 --sp;
12806                                 addr = *sp;
12807                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12808                                 CHECK_CFG_ERROR;
12809
12810                                 if (cfg->llvm_only)
12811                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12812
12813                                 n = fsig->param_count + fsig->hasthis + 1;
12814
12815                                 CHECK_STACK (n);
12816
12817                                 sp -= n;
12818                                 arg = sp [n - 1];
12819
12820                                 if (cfg->llvm_only) {
12821                                         /*
12822                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12823                                          * cconv. This is set by mono_init_delegate ().
12824                                          */
12825                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12826                                                 MonoInst *callee = addr;
12827                                                 MonoInst *call, *localloc_ins;
12828                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12829                                                 int low_bit_reg = alloc_preg (cfg);
12830
12831                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12832                                                 NEW_BBLOCK (cfg, end_bb);
12833
12834                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12835                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12836                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12837
12838                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12839                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12840                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12841                                                 /*
12842                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12843                                                  */
12844                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12845                                                 ins->dreg = alloc_preg (cfg);
12846                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12847                                                 MONO_ADD_INS (cfg->cbb, ins);
12848                                                 localloc_ins = ins;
12849                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12850                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12851                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12852
12853                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12854                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12855
12856                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12857                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12858                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12859                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12860                                                 ins->dreg = call->dreg;
12861
12862                                                 MONO_START_BB (cfg, end_bb);
12863                                         } else {
12864                                                 /* Caller uses a normal calling conv */
12865
12866                                                 MonoInst *callee = addr;
12867                                                 MonoInst *call, *localloc_ins;
12868                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12869                                                 int low_bit_reg = alloc_preg (cfg);
12870
12871                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12872                                                 NEW_BBLOCK (cfg, end_bb);
12873
12874                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12875                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12876                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12877
12878                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12879                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12880                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12881                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12882                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12883                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12884                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12885                                                 MONO_ADD_INS (cfg->cbb, addr);
12886                                                 /*
12887                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12888                                                  */
12889                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12890                                                 ins->dreg = alloc_preg (cfg);
12891                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12892                                                 MONO_ADD_INS (cfg->cbb, ins);
12893                                                 localloc_ins = ins;
12894                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12895                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12896                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12897
12898                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12899                                                 ins->dreg = call->dreg;
12900                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12901
12902                                                 MONO_START_BB (cfg, end_bb);
12903                                         }
12904                                 } else {
12905                                         /* Same as CEE_CALLI */
12906                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12907                                                 /*
12908                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12909                                                  */
12910                                                 MonoInst *callee = addr;
12911
12912                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12913                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12914                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12915                                         } else {
12916                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12917                                         }
12918                                 }
12919
12920                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12921                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12922
12923                                 CHECK_CFG_EXCEPTION;
12924
12925                                 ip += 6;
12926                                 ins_flag = 0;
12927                                 constrained_class = NULL;
12928                                 break;
12929                         }
12930                         case CEE_MONO_LDDOMAIN:
12931                                 CHECK_STACK_OVF (1);
12932                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12933                                 ip += 2;
12934                                 *sp++ = ins;
12935                                 break;
12936                         default:
12937                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12938                                 break;
12939                         }
12940                         break;
12941                 }
12942
12943                 case CEE_PREFIX1: {
12944                         CHECK_OPSIZE (2);
12945                         switch (ip [1]) {
12946                         case CEE_ARGLIST: {
12947                                 /* somewhat similar to LDTOKEN */
12948                                 MonoInst *addr, *vtvar;
12949                                 CHECK_STACK_OVF (1);
12950                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12951
12952                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12953                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12954
12955                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12956                                 ins->type = STACK_VTYPE;
12957                                 ins->klass = mono_defaults.argumenthandle_class;
12958                                 *sp++ = ins;
12959                                 ip += 2;
12960                                 break;
12961                         }
12962                         case CEE_CEQ:
12963                         case CEE_CGT:
12964                         case CEE_CGT_UN:
12965                         case CEE_CLT:
12966                         case CEE_CLT_UN: {
12967                                 MonoInst *cmp, *arg1, *arg2;
12968
12969                                 CHECK_STACK (2);
12970                                 sp -= 2;
12971                                 arg1 = sp [0];
12972                                 arg2 = sp [1];
12973
12974                                 /*
12975                                  * The following transforms:
12976                                  *    CEE_CEQ    into OP_CEQ
12977                                  *    CEE_CGT    into OP_CGT
12978                                  *    CEE_CGT_UN into OP_CGT_UN
12979                                  *    CEE_CLT    into OP_CLT
12980                                  *    CEE_CLT_UN into OP_CLT_UN
12981                                  */
12982                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
12983
12984                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
12985                                 cmp->sreg1 = arg1->dreg;
12986                                 cmp->sreg2 = arg2->dreg;
12987                                 type_from_op (cfg, cmp, arg1, arg2);
12988                                 CHECK_TYPE (cmp);
12989                                 add_widen_op (cfg, cmp, &arg1, &arg2);
12990                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
12991                                         cmp->opcode = OP_LCOMPARE;
12992                                 else if (arg1->type == STACK_R4)
12993                                         cmp->opcode = OP_RCOMPARE;
12994                                 else if (arg1->type == STACK_R8)
12995                                         cmp->opcode = OP_FCOMPARE;
12996                                 else
12997                                         cmp->opcode = OP_ICOMPARE;
12998                                 MONO_ADD_INS (cfg->cbb, cmp);
12999                                 ins->type = STACK_I4;
13000                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13001                                 type_from_op (cfg, ins, arg1, arg2);
13002
13003                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13004                                         /*
13005                                          * The backends expect the fceq opcodes to do the
13006                                          * comparison too.
13007                                          */
13008                                         ins->sreg1 = cmp->sreg1;
13009                                         ins->sreg2 = cmp->sreg2;
13010                                         NULLIFY_INS (cmp);
13011                                 }
13012                                 MONO_ADD_INS (cfg->cbb, ins);
13013                                 *sp++ = ins;
13014                                 ip += 2;
13015                                 break;
13016                         }
13017                         case CEE_LDFTN: {
13018                                 MonoInst *argconst;
13019                                 MonoMethod *cil_method;
13020
13021                                 CHECK_STACK_OVF (1);
13022                                 CHECK_OPSIZE (6);
13023                                 n = read32 (ip + 2);
13024                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13025                                 CHECK_CFG_ERROR;
13026
13027                                 mono_class_init (cmethod->klass);
13028
13029                                 mono_save_token_info (cfg, image, n, cmethod);
13030
13031                                 context_used = mini_method_check_context_used (cfg, cmethod);
13032
13033                                 cil_method = cmethod;
13034                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13035                                         emit_method_access_failure (cfg, method, cil_method);
13036
13037                                 if (mono_security_core_clr_enabled ())
13038                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13039
13040                                 /*
13041                                  * Optimize the common case of ldftn+delegate creation
13042                                  */
13043                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13044                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13045                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13046                                                 MonoInst *target_ins, *handle_ins;
13047                                                 MonoMethod *invoke;
13048                                                 int invoke_context_used;
13049
13050                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13051                                                 if (!invoke || !mono_method_signature (invoke))
13052                                                         LOAD_ERROR;
13053
13054                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13055
13056                                                 target_ins = sp [-1];
13057
13058                                                 if (mono_security_core_clr_enabled ())
13059                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13060
13061                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13062                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13063                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13064                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13065                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13066                                                         }
13067                                                 }
13068
13069                                                 /* FIXME: SGEN support */
13070                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13071                                                         ip += 6;
13072                                                         if (cfg->verbose_level > 3)
13073                                                                 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));
13074                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13075                                                                 sp --;
13076                                                                 *sp = handle_ins;
13077                                                                 CHECK_CFG_EXCEPTION;
13078                                                                 ip += 5;
13079                                                                 sp ++;
13080                                                                 break;
13081                                                         }
13082                                                         ip -= 6;
13083                                                 }
13084                                         }
13085                                 }
13086
13087                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13088                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13089                                 *sp++ = ins;
13090
13091                                 ip += 6;
13092                                 inline_costs += 10 * num_calls++;
13093                                 break;
13094                         }
13095                         case CEE_LDVIRTFTN: {
13096                                 MonoInst *args [2];
13097
13098                                 CHECK_STACK (1);
13099                                 CHECK_OPSIZE (6);
13100                                 n = read32 (ip + 2);
13101                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13102                                 CHECK_CFG_ERROR;
13103
13104                                 mono_class_init (cmethod->klass);
13105
13106                                 context_used = mini_method_check_context_used (cfg, cmethod);
13107
13108                                 if (mono_security_core_clr_enabled ())
13109                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13110
13111                                 /*
13112                                  * Optimize the common case of ldvirtftn+delegate creation
13113                                  */
13114                                 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)) {
13115                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13116                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13117                                                 MonoInst *target_ins, *handle_ins;
13118                                                 MonoMethod *invoke;
13119                                                 int invoke_context_used;
13120                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13121
13122                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13123                                                 if (!invoke || !mono_method_signature (invoke))
13124                                                         LOAD_ERROR;
13125
13126                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13127
13128                                                 target_ins = sp [-1];
13129
13130                                                 if (mono_security_core_clr_enabled ())
13131                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13132
13133                                                 /* FIXME: SGEN support */
13134                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13135                                                         ip += 6;
13136                                                         if (cfg->verbose_level > 3)
13137                                                                 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));
13138                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13139                                                                 sp -= 2;
13140                                                                 *sp = handle_ins;
13141                                                                 CHECK_CFG_EXCEPTION;
13142                                                                 ip += 5;
13143                                                                 sp ++;
13144                                                                 break;
13145                                                         }
13146                                                         ip -= 6;
13147                                                 }
13148                                         }
13149                                 }
13150
13151                                 --sp;
13152                                 args [0] = *sp;
13153
13154                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13155                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13156
13157                                 if (context_used)
13158                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13159                                 else
13160                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13161
13162                                 ip += 6;
13163                                 inline_costs += 10 * num_calls++;
13164                                 break;
13165                         }
13166                         case CEE_LDARG:
13167                                 CHECK_STACK_OVF (1);
13168                                 CHECK_OPSIZE (4);
13169                                 n = read16 (ip + 2);
13170                                 CHECK_ARG (n);
13171                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13172                                 *sp++ = ins;
13173                                 ip += 4;
13174                                 break;
13175                         case CEE_LDARGA:
13176                                 CHECK_STACK_OVF (1);
13177                                 CHECK_OPSIZE (4);
13178                                 n = read16 (ip + 2);
13179                                 CHECK_ARG (n);
13180                                 NEW_ARGLOADA (cfg, ins, n);
13181                                 MONO_ADD_INS (cfg->cbb, ins);
13182                                 *sp++ = ins;
13183                                 ip += 4;
13184                                 break;
13185                         case CEE_STARG:
13186                                 CHECK_STACK (1);
13187                                 --sp;
13188                                 CHECK_OPSIZE (4);
13189                                 n = read16 (ip + 2);
13190                                 CHECK_ARG (n);
13191                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13192                                         UNVERIFIED;
13193                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13194                                 ip += 4;
13195                                 break;
13196                         case CEE_LDLOC:
13197                                 CHECK_STACK_OVF (1);
13198                                 CHECK_OPSIZE (4);
13199                                 n = read16 (ip + 2);
13200                                 CHECK_LOCAL (n);
13201                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13202                                 *sp++ = ins;
13203                                 ip += 4;
13204                                 break;
13205                         case CEE_LDLOCA: {
13206                                 unsigned char *tmp_ip;
13207                                 CHECK_STACK_OVF (1);
13208                                 CHECK_OPSIZE (4);
13209                                 n = read16 (ip + 2);
13210                                 CHECK_LOCAL (n);
13211
13212                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13213                                         ip = tmp_ip;
13214                                         inline_costs += 1;
13215                                         break;
13216                                 }
13217
13218                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13219                                 *sp++ = ins;
13220                                 ip += 4;
13221                                 break;
13222                         }
13223                         case CEE_STLOC:
13224                                 CHECK_STACK (1);
13225                                 --sp;
13226                                 CHECK_OPSIZE (4);
13227                                 n = read16 (ip + 2);
13228                                 CHECK_LOCAL (n);
13229                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13230                                         UNVERIFIED;
13231                                 emit_stloc_ir (cfg, sp, header, n);
13232                                 ip += 4;
13233                                 inline_costs += 1;
13234                                 break;
13235                         case CEE_LOCALLOC:
13236                                 CHECK_STACK (1);
13237                                 --sp;
13238                                 if (sp != stack_start)
13239                                         UNVERIFIED;
13240                                 if (cfg->method != method)
13241                                         /*
13242                                          * Inlining this into a loop in a parent could lead to
13243                                          * stack overflows which is different behavior than the
13244                                          * non-inlined case, thus disable inlining in this case.
13245                                          */
13246                                         INLINE_FAILURE("localloc");
13247
13248                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13249                                 ins->dreg = alloc_preg (cfg);
13250                                 ins->sreg1 = sp [0]->dreg;
13251                                 ins->type = STACK_PTR;
13252                                 MONO_ADD_INS (cfg->cbb, ins);
13253
13254                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13255                                 if (init_locals)
13256                                         ins->flags |= MONO_INST_INIT;
13257
13258                                 *sp++ = ins;
13259                                 ip += 2;
13260                                 break;
13261                         case CEE_ENDFILTER: {
13262                                 MonoExceptionClause *clause, *nearest;
13263                                 int cc;
13264
13265                                 CHECK_STACK (1);
13266                                 --sp;
13267                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13268                                         UNVERIFIED;
13269                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13270                                 ins->sreg1 = (*sp)->dreg;
13271                                 MONO_ADD_INS (cfg->cbb, ins);
13272                                 start_new_bblock = 1;
13273                                 ip += 2;
13274
13275                                 nearest = NULL;
13276                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13277                                         clause = &header->clauses [cc];
13278                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13279                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13280                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13281                                                 nearest = clause;
13282                                 }
13283                                 g_assert (nearest);
13284                                 if ((ip - header->code) != nearest->handler_offset)
13285                                         UNVERIFIED;
13286
13287                                 break;
13288                         }
13289                         case CEE_UNALIGNED_:
13290                                 ins_flag |= MONO_INST_UNALIGNED;
13291                                 /* FIXME: record alignment? we can assume 1 for now */
13292                                 CHECK_OPSIZE (3);
13293                                 ip += 3;
13294                                 break;
13295                         case CEE_VOLATILE_:
13296                                 ins_flag |= MONO_INST_VOLATILE;
13297                                 ip += 2;
13298                                 break;
13299                         case CEE_TAIL_:
13300                                 ins_flag   |= MONO_INST_TAILCALL;
13301                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13302                                 /* Can't inline tail calls at this time */
13303                                 inline_costs += 100000;
13304                                 ip += 2;
13305                                 break;
13306                         case CEE_INITOBJ:
13307                                 CHECK_STACK (1);
13308                                 --sp;
13309                                 CHECK_OPSIZE (6);
13310                                 token = read32 (ip + 2);
13311                                 klass = mini_get_class (method, token, generic_context);
13312                                 CHECK_TYPELOAD (klass);
13313                                 if (generic_class_is_reference_type (cfg, klass))
13314                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13315                                 else
13316                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13317                                 ip += 6;
13318                                 inline_costs += 1;
13319                                 break;
13320                         case CEE_CONSTRAINED_:
13321                                 CHECK_OPSIZE (6);
13322                                 token = read32 (ip + 2);
13323                                 constrained_class = mini_get_class (method, token, generic_context);
13324                                 CHECK_TYPELOAD (constrained_class);
13325                                 ip += 6;
13326                                 break;
13327                         case CEE_CPBLK:
13328                         case CEE_INITBLK: {
13329                                 MonoInst *iargs [3];
13330                                 CHECK_STACK (3);
13331                                 sp -= 3;
13332
13333                                 /* Skip optimized paths for volatile operations. */
13334                                 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)) {
13335                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13336                                 } 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)) {
13337                                         /* emit_memset only works when val == 0 */
13338                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13339                                 } else {
13340                                         MonoInst *call;
13341                                         iargs [0] = sp [0];
13342                                         iargs [1] = sp [1];
13343                                         iargs [2] = sp [2];
13344                                         if (ip [1] == CEE_CPBLK) {
13345                                                 /*
13346                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13347                                                  * and release barriers for cpblk. It is technically both a load and
13348                                                  * store operation, so it seems like that's the sensible thing to do.
13349                                                  *
13350                                                  * FIXME: We emit full barriers on both sides of the operation for
13351                                                  * simplicity. We should have a separate atomic memcpy method instead.
13352                                                  */
13353                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13354
13355                                                 if (ins_flag & MONO_INST_VOLATILE)
13356                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13357
13358                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13359                                                 call->flags |= ins_flag;
13360
13361                                                 if (ins_flag & MONO_INST_VOLATILE)
13362                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13363                                         } else {
13364                                                 MonoMethod *memset_method = get_memset_method ();
13365                                                 if (ins_flag & MONO_INST_VOLATILE) {
13366                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13367                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13368                                                 }
13369                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13370                                                 call->flags |= ins_flag;
13371                                         }
13372                                 }
13373                                 ip += 2;
13374                                 ins_flag = 0;
13375                                 inline_costs += 1;
13376                                 break;
13377                         }
13378                         case CEE_NO_:
13379                                 CHECK_OPSIZE (3);
13380                                 if (ip [2] & 0x1)
13381                                         ins_flag |= MONO_INST_NOTYPECHECK;
13382                                 if (ip [2] & 0x2)
13383                                         ins_flag |= MONO_INST_NORANGECHECK;
13384                                 /* we ignore the no-nullcheck for now since we
13385                                  * really do it explicitly only when doing callvirt->call
13386                                  */
13387                                 ip += 3;
13388                                 break;
13389                         case CEE_RETHROW: {
13390                                 MonoInst *load;
13391                                 int handler_offset = -1;
13392
13393                                 for (i = 0; i < header->num_clauses; ++i) {
13394                                         MonoExceptionClause *clause = &header->clauses [i];
13395                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13396                                                 handler_offset = clause->handler_offset;
13397                                                 break;
13398                                         }
13399                                 }
13400
13401                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13402
13403                                 if (handler_offset == -1)
13404                                         UNVERIFIED;
13405
13406                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13407                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13408                                 ins->sreg1 = load->dreg;
13409                                 MONO_ADD_INS (cfg->cbb, ins);
13410
13411                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13412                                 MONO_ADD_INS (cfg->cbb, ins);
13413
13414                                 sp = stack_start;
13415                                 link_bblock (cfg, cfg->cbb, end_bblock);
13416                                 start_new_bblock = 1;
13417                                 ip += 2;
13418                                 break;
13419                         }
13420                         case CEE_SIZEOF: {
13421                                 guint32 val;
13422                                 int ialign;
13423
13424                                 CHECK_STACK_OVF (1);
13425                                 CHECK_OPSIZE (6);
13426                                 token = read32 (ip + 2);
13427                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13428                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13429                                         CHECK_CFG_ERROR;
13430
13431                                         val = mono_type_size (type, &ialign);
13432                                 } else {
13433                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13434                                         CHECK_TYPELOAD (klass);
13435
13436                                         val = mono_type_size (&klass->byval_arg, &ialign);
13437
13438                                         if (mini_is_gsharedvt_klass (klass))
13439                                                 GSHAREDVT_FAILURE (*ip);
13440                                 }
13441                                 EMIT_NEW_ICONST (cfg, ins, val);
13442                                 *sp++= ins;
13443                                 ip += 6;
13444                                 break;
13445                         }
13446                         case CEE_REFANYTYPE: {
13447                                 MonoInst *src_var, *src;
13448
13449                                 GSHAREDVT_FAILURE (*ip);
13450
13451                                 CHECK_STACK (1);
13452                                 --sp;
13453
13454                                 // FIXME:
13455                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13456                                 if (!src_var)
13457                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13458                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13459                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13460                                 *sp++ = ins;
13461                                 ip += 2;
13462                                 break;
13463                         }
13464                         case CEE_READONLY_:
13465                                 readonly = TRUE;
13466                                 ip += 2;
13467                                 break;
13468
13469                         case CEE_UNUSED56:
13470                         case CEE_UNUSED57:
13471                         case CEE_UNUSED70:
13472                         case CEE_UNUSED:
13473                         case CEE_UNUSED99:
13474                                 UNVERIFIED;
13475
13476                         default:
13477                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13478                                 UNVERIFIED;
13479                         }
13480                         break;
13481                 }
13482                 case CEE_UNUSED58:
13483                 case CEE_UNUSED1:
13484                         UNVERIFIED;
13485
13486                 default:
13487                         g_warning ("opcode 0x%02x not handled", *ip);
13488                         UNVERIFIED;
13489                 }
13490         }
13491         if (start_new_bblock != 1)
13492                 UNVERIFIED;
13493
13494         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13495         if (cfg->cbb->next_bb) {
13496                 /* This could already be set because of inlining, #693905 */
13497                 MonoBasicBlock *bb = cfg->cbb;
13498
13499                 while (bb->next_bb)
13500                         bb = bb->next_bb;
13501                 bb->next_bb = end_bblock;
13502         } else {
13503                 cfg->cbb->next_bb = end_bblock;
13504         }
13505
13506         if (cfg->method == method && cfg->domainvar) {
13507                 MonoInst *store;
13508                 MonoInst *get_domain;
13509
13510                 cfg->cbb = init_localsbb;
13511
13512                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13513                         MONO_ADD_INS (cfg->cbb, get_domain);
13514                 } else {
13515                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13516                 }
13517                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13518                 MONO_ADD_INS (cfg->cbb, store);
13519         }
13520
13521 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13522         if (cfg->compile_aot)
13523                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13524                 mono_get_got_var (cfg);
13525 #endif
13526
13527         if (cfg->method == method && cfg->got_var)
13528                 mono_emit_load_got_addr (cfg);
13529
13530         if (init_localsbb) {
13531                 cfg->cbb = init_localsbb;
13532                 cfg->ip = NULL;
13533                 for (i = 0; i < header->num_locals; ++i) {
13534                         emit_init_local (cfg, i, header->locals [i], init_locals);
13535                 }
13536         }
13537
13538         if (cfg->init_ref_vars && cfg->method == method) {
13539                 /* Emit initialization for ref vars */
13540                 // FIXME: Avoid duplication initialization for IL locals.
13541                 for (i = 0; i < cfg->num_varinfo; ++i) {
13542                         MonoInst *ins = cfg->varinfo [i];
13543
13544                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13545                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13546                 }
13547         }
13548
13549         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13550                 cfg->cbb = init_localsbb;
13551                 emit_push_lmf (cfg);
13552         }
13553
13554         cfg->cbb = init_localsbb;
13555         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13556
13557         if (seq_points) {
13558                 MonoBasicBlock *bb;
13559
13560                 /*
13561                  * Make seq points at backward branch targets interruptable.
13562                  */
13563                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13564                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13565                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13566         }
13567
13568         /* Add a sequence point for method entry/exit events */
13569         if (seq_points && cfg->gen_sdb_seq_points) {
13570                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13571                 MONO_ADD_INS (init_localsbb, ins);
13572                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13573                 MONO_ADD_INS (cfg->bb_exit, ins);
13574         }
13575
13576         /*
13577          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13578          * the code they refer to was dead (#11880).
13579          */
13580         if (sym_seq_points) {
13581                 for (i = 0; i < header->code_size; ++i) {
13582                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13583                                 MonoInst *ins;
13584
13585                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13586                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13587                         }
13588                 }
13589         }
13590
13591         cfg->ip = NULL;
13592
13593         if (cfg->method == method) {
13594                 MonoBasicBlock *bb;
13595                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13596                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13597                         if (cfg->spvars)
13598                                 mono_create_spvar_for_region (cfg, bb->region);
13599                         if (cfg->verbose_level > 2)
13600                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13601                 }
13602         } else {
13603                 MonoBasicBlock *bb;
13604                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13605                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13606                         bb->real_offset = inline_offset;
13607                 }
13608         }
13609
13610         if (inline_costs < 0) {
13611                 char *mname;
13612
13613                 /* Method is too large */
13614                 mname = mono_method_full_name (method, TRUE);
13615                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13616                 g_free (mname);
13617         }
13618
13619         if ((cfg->verbose_level > 2) && (cfg->method == method))
13620                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13621
13622         goto cleanup;
13623
13624 mono_error_exit:
13625         g_assert (!mono_error_ok (&cfg->error));
13626         goto cleanup;
13627
13628  exception_exit:
13629         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13630         goto cleanup;
13631
13632  unverified:
13633         set_exception_type_from_invalid_il (cfg, method, ip);
13634         goto cleanup;
13635
13636  cleanup:
13637         g_slist_free (class_inits);
13638         mono_basic_block_free (original_bb);
13639         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13640         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13641         if (cfg->exception_type)
13642                 return -1;
13643         else
13644                 return inline_costs;
13645 }
13646
13647 static int
13648 store_membase_reg_to_store_membase_imm (int opcode)
13649 {
13650         switch (opcode) {
13651         case OP_STORE_MEMBASE_REG:
13652                 return OP_STORE_MEMBASE_IMM;
13653         case OP_STOREI1_MEMBASE_REG:
13654                 return OP_STOREI1_MEMBASE_IMM;
13655         case OP_STOREI2_MEMBASE_REG:
13656                 return OP_STOREI2_MEMBASE_IMM;
13657         case OP_STOREI4_MEMBASE_REG:
13658                 return OP_STOREI4_MEMBASE_IMM;
13659         case OP_STOREI8_MEMBASE_REG:
13660                 return OP_STOREI8_MEMBASE_IMM;
13661         default:
13662                 g_assert_not_reached ();
13663         }
13664
13665         return -1;
13666 }
13667
13668 int
13669 mono_op_to_op_imm (int opcode)
13670 {
13671         switch (opcode) {
13672         case OP_IADD:
13673                 return OP_IADD_IMM;
13674         case OP_ISUB:
13675                 return OP_ISUB_IMM;
13676         case OP_IDIV:
13677                 return OP_IDIV_IMM;
13678         case OP_IDIV_UN:
13679                 return OP_IDIV_UN_IMM;
13680         case OP_IREM:
13681                 return OP_IREM_IMM;
13682         case OP_IREM_UN:
13683                 return OP_IREM_UN_IMM;
13684         case OP_IMUL:
13685                 return OP_IMUL_IMM;
13686         case OP_IAND:
13687                 return OP_IAND_IMM;
13688         case OP_IOR:
13689                 return OP_IOR_IMM;
13690         case OP_IXOR:
13691                 return OP_IXOR_IMM;
13692         case OP_ISHL:
13693                 return OP_ISHL_IMM;
13694         case OP_ISHR:
13695                 return OP_ISHR_IMM;
13696         case OP_ISHR_UN:
13697                 return OP_ISHR_UN_IMM;
13698
13699         case OP_LADD:
13700                 return OP_LADD_IMM;
13701         case OP_LSUB:
13702                 return OP_LSUB_IMM;
13703         case OP_LAND:
13704                 return OP_LAND_IMM;
13705         case OP_LOR:
13706                 return OP_LOR_IMM;
13707         case OP_LXOR:
13708                 return OP_LXOR_IMM;
13709         case OP_LSHL:
13710                 return OP_LSHL_IMM;
13711         case OP_LSHR:
13712                 return OP_LSHR_IMM;
13713         case OP_LSHR_UN:
13714                 return OP_LSHR_UN_IMM;
13715 #if SIZEOF_REGISTER == 8
13716         case OP_LREM:
13717                 return OP_LREM_IMM;
13718 #endif
13719
13720         case OP_COMPARE:
13721                 return OP_COMPARE_IMM;
13722         case OP_ICOMPARE:
13723                 return OP_ICOMPARE_IMM;
13724         case OP_LCOMPARE:
13725                 return OP_LCOMPARE_IMM;
13726
13727         case OP_STORE_MEMBASE_REG:
13728                 return OP_STORE_MEMBASE_IMM;
13729         case OP_STOREI1_MEMBASE_REG:
13730                 return OP_STOREI1_MEMBASE_IMM;
13731         case OP_STOREI2_MEMBASE_REG:
13732                 return OP_STOREI2_MEMBASE_IMM;
13733         case OP_STOREI4_MEMBASE_REG:
13734                 return OP_STOREI4_MEMBASE_IMM;
13735
13736 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13737         case OP_X86_PUSH:
13738                 return OP_X86_PUSH_IMM;
13739         case OP_X86_COMPARE_MEMBASE_REG:
13740                 return OP_X86_COMPARE_MEMBASE_IMM;
13741 #endif
13742 #if defined(TARGET_AMD64)
13743         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13744                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13745 #endif
13746         case OP_VOIDCALL_REG:
13747                 return OP_VOIDCALL;
13748         case OP_CALL_REG:
13749                 return OP_CALL;
13750         case OP_LCALL_REG:
13751                 return OP_LCALL;
13752         case OP_FCALL_REG:
13753                 return OP_FCALL;
13754         case OP_LOCALLOC:
13755                 return OP_LOCALLOC_IMM;
13756         }
13757
13758         return -1;
13759 }
13760
13761 static int
13762 ldind_to_load_membase (int opcode)
13763 {
13764         switch (opcode) {
13765         case CEE_LDIND_I1:
13766                 return OP_LOADI1_MEMBASE;
13767         case CEE_LDIND_U1:
13768                 return OP_LOADU1_MEMBASE;
13769         case CEE_LDIND_I2:
13770                 return OP_LOADI2_MEMBASE;
13771         case CEE_LDIND_U2:
13772                 return OP_LOADU2_MEMBASE;
13773         case CEE_LDIND_I4:
13774                 return OP_LOADI4_MEMBASE;
13775         case CEE_LDIND_U4:
13776                 return OP_LOADU4_MEMBASE;
13777         case CEE_LDIND_I:
13778                 return OP_LOAD_MEMBASE;
13779         case CEE_LDIND_REF:
13780                 return OP_LOAD_MEMBASE;
13781         case CEE_LDIND_I8:
13782                 return OP_LOADI8_MEMBASE;
13783         case CEE_LDIND_R4:
13784                 return OP_LOADR4_MEMBASE;
13785         case CEE_LDIND_R8:
13786                 return OP_LOADR8_MEMBASE;
13787         default:
13788                 g_assert_not_reached ();
13789         }
13790
13791         return -1;
13792 }
13793
13794 static int
13795 stind_to_store_membase (int opcode)
13796 {
13797         switch (opcode) {
13798         case CEE_STIND_I1:
13799                 return OP_STOREI1_MEMBASE_REG;
13800         case CEE_STIND_I2:
13801                 return OP_STOREI2_MEMBASE_REG;
13802         case CEE_STIND_I4:
13803                 return OP_STOREI4_MEMBASE_REG;
13804         case CEE_STIND_I:
13805         case CEE_STIND_REF:
13806                 return OP_STORE_MEMBASE_REG;
13807         case CEE_STIND_I8:
13808                 return OP_STOREI8_MEMBASE_REG;
13809         case CEE_STIND_R4:
13810                 return OP_STORER4_MEMBASE_REG;
13811         case CEE_STIND_R8:
13812                 return OP_STORER8_MEMBASE_REG;
13813         default:
13814                 g_assert_not_reached ();
13815         }
13816
13817         return -1;
13818 }
13819
13820 int
13821 mono_load_membase_to_load_mem (int opcode)
13822 {
13823         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13824 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13825         switch (opcode) {
13826         case OP_LOAD_MEMBASE:
13827                 return OP_LOAD_MEM;
13828         case OP_LOADU1_MEMBASE:
13829                 return OP_LOADU1_MEM;
13830         case OP_LOADU2_MEMBASE:
13831                 return OP_LOADU2_MEM;
13832         case OP_LOADI4_MEMBASE:
13833                 return OP_LOADI4_MEM;
13834         case OP_LOADU4_MEMBASE:
13835                 return OP_LOADU4_MEM;
13836 #if SIZEOF_REGISTER == 8
13837         case OP_LOADI8_MEMBASE:
13838                 return OP_LOADI8_MEM;
13839 #endif
13840         }
13841 #endif
13842
13843         return -1;
13844 }
13845
13846 static inline int
13847 op_to_op_dest_membase (int store_opcode, int opcode)
13848 {
13849 #if defined(TARGET_X86)
13850         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13851                 return -1;
13852
13853         switch (opcode) {
13854         case OP_IADD:
13855                 return OP_X86_ADD_MEMBASE_REG;
13856         case OP_ISUB:
13857                 return OP_X86_SUB_MEMBASE_REG;
13858         case OP_IAND:
13859                 return OP_X86_AND_MEMBASE_REG;
13860         case OP_IOR:
13861                 return OP_X86_OR_MEMBASE_REG;
13862         case OP_IXOR:
13863                 return OP_X86_XOR_MEMBASE_REG;
13864         case OP_ADD_IMM:
13865         case OP_IADD_IMM:
13866                 return OP_X86_ADD_MEMBASE_IMM;
13867         case OP_SUB_IMM:
13868         case OP_ISUB_IMM:
13869                 return OP_X86_SUB_MEMBASE_IMM;
13870         case OP_AND_IMM:
13871         case OP_IAND_IMM:
13872                 return OP_X86_AND_MEMBASE_IMM;
13873         case OP_OR_IMM:
13874         case OP_IOR_IMM:
13875                 return OP_X86_OR_MEMBASE_IMM;
13876         case OP_XOR_IMM:
13877         case OP_IXOR_IMM:
13878                 return OP_X86_XOR_MEMBASE_IMM;
13879         case OP_MOVE:
13880                 return OP_NOP;
13881         }
13882 #endif
13883
13884 #if defined(TARGET_AMD64)
13885         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13886                 return -1;
13887
13888         switch (opcode) {
13889         case OP_IADD:
13890                 return OP_X86_ADD_MEMBASE_REG;
13891         case OP_ISUB:
13892                 return OP_X86_SUB_MEMBASE_REG;
13893         case OP_IAND:
13894                 return OP_X86_AND_MEMBASE_REG;
13895         case OP_IOR:
13896                 return OP_X86_OR_MEMBASE_REG;
13897         case OP_IXOR:
13898                 return OP_X86_XOR_MEMBASE_REG;
13899         case OP_IADD_IMM:
13900                 return OP_X86_ADD_MEMBASE_IMM;
13901         case OP_ISUB_IMM:
13902                 return OP_X86_SUB_MEMBASE_IMM;
13903         case OP_IAND_IMM:
13904                 return OP_X86_AND_MEMBASE_IMM;
13905         case OP_IOR_IMM:
13906                 return OP_X86_OR_MEMBASE_IMM;
13907         case OP_IXOR_IMM:
13908                 return OP_X86_XOR_MEMBASE_IMM;
13909         case OP_LADD:
13910                 return OP_AMD64_ADD_MEMBASE_REG;
13911         case OP_LSUB:
13912                 return OP_AMD64_SUB_MEMBASE_REG;
13913         case OP_LAND:
13914                 return OP_AMD64_AND_MEMBASE_REG;
13915         case OP_LOR:
13916                 return OP_AMD64_OR_MEMBASE_REG;
13917         case OP_LXOR:
13918                 return OP_AMD64_XOR_MEMBASE_REG;
13919         case OP_ADD_IMM:
13920         case OP_LADD_IMM:
13921                 return OP_AMD64_ADD_MEMBASE_IMM;
13922         case OP_SUB_IMM:
13923         case OP_LSUB_IMM:
13924                 return OP_AMD64_SUB_MEMBASE_IMM;
13925         case OP_AND_IMM:
13926         case OP_LAND_IMM:
13927                 return OP_AMD64_AND_MEMBASE_IMM;
13928         case OP_OR_IMM:
13929         case OP_LOR_IMM:
13930                 return OP_AMD64_OR_MEMBASE_IMM;
13931         case OP_XOR_IMM:
13932         case OP_LXOR_IMM:
13933                 return OP_AMD64_XOR_MEMBASE_IMM;
13934         case OP_MOVE:
13935                 return OP_NOP;
13936         }
13937 #endif
13938
13939         return -1;
13940 }
13941
13942 static inline int
13943 op_to_op_store_membase (int store_opcode, int opcode)
13944 {
13945 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13946         switch (opcode) {
13947         case OP_ICEQ:
13948                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13949                         return OP_X86_SETEQ_MEMBASE;
13950         case OP_CNE:
13951                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13952                         return OP_X86_SETNE_MEMBASE;
13953         }
13954 #endif
13955
13956         return -1;
13957 }
13958
13959 static inline int
13960 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13961 {
13962 #ifdef TARGET_X86
13963         /* FIXME: This has sign extension issues */
13964         /*
13965         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13966                 return OP_X86_COMPARE_MEMBASE8_IMM;
13967         */
13968
13969         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
13970                 return -1;
13971
13972         switch (opcode) {
13973         case OP_X86_PUSH:
13974                 return OP_X86_PUSH_MEMBASE;
13975         case OP_COMPARE_IMM:
13976         case OP_ICOMPARE_IMM:
13977                 return OP_X86_COMPARE_MEMBASE_IMM;
13978         case OP_COMPARE:
13979         case OP_ICOMPARE:
13980                 return OP_X86_COMPARE_MEMBASE_REG;
13981         }
13982 #endif
13983
13984 #ifdef TARGET_AMD64
13985         /* FIXME: This has sign extension issues */
13986         /*
13987         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
13988                 return OP_X86_COMPARE_MEMBASE8_IMM;
13989         */
13990
13991         switch (opcode) {
13992         case OP_X86_PUSH:
13993                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
13994                         return OP_X86_PUSH_MEMBASE;
13995                 break;
13996                 /* FIXME: This only works for 32 bit immediates
13997         case OP_COMPARE_IMM:
13998         case OP_LCOMPARE_IMM:
13999                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14000                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14001                 */
14002         case OP_ICOMPARE_IMM:
14003                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14004                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14005                 break;
14006         case OP_COMPARE:
14007         case OP_LCOMPARE:
14008                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14009                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14010                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14011                         return OP_AMD64_COMPARE_MEMBASE_REG;
14012                 break;
14013         case OP_ICOMPARE:
14014                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14015                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14016                 break;
14017         }
14018 #endif
14019
14020         return -1;
14021 }
14022
14023 static inline int
14024 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14025 {
14026 #ifdef TARGET_X86
14027         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14028                 return -1;
14029
14030         switch (opcode) {
14031         case OP_COMPARE:
14032         case OP_ICOMPARE:
14033                 return OP_X86_COMPARE_REG_MEMBASE;
14034         case OP_IADD:
14035                 return OP_X86_ADD_REG_MEMBASE;
14036         case OP_ISUB:
14037                 return OP_X86_SUB_REG_MEMBASE;
14038         case OP_IAND:
14039                 return OP_X86_AND_REG_MEMBASE;
14040         case OP_IOR:
14041                 return OP_X86_OR_REG_MEMBASE;
14042         case OP_IXOR:
14043                 return OP_X86_XOR_REG_MEMBASE;
14044         }
14045 #endif
14046
14047 #ifdef TARGET_AMD64
14048         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14049                 switch (opcode) {
14050                 case OP_ICOMPARE:
14051                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14052                 case OP_IADD:
14053                         return OP_X86_ADD_REG_MEMBASE;
14054                 case OP_ISUB:
14055                         return OP_X86_SUB_REG_MEMBASE;
14056                 case OP_IAND:
14057                         return OP_X86_AND_REG_MEMBASE;
14058                 case OP_IOR:
14059                         return OP_X86_OR_REG_MEMBASE;
14060                 case OP_IXOR:
14061                         return OP_X86_XOR_REG_MEMBASE;
14062                 }
14063         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14064                 switch (opcode) {
14065                 case OP_COMPARE:
14066                 case OP_LCOMPARE:
14067                         return OP_AMD64_COMPARE_REG_MEMBASE;
14068                 case OP_LADD:
14069                         return OP_AMD64_ADD_REG_MEMBASE;
14070                 case OP_LSUB:
14071                         return OP_AMD64_SUB_REG_MEMBASE;
14072                 case OP_LAND:
14073                         return OP_AMD64_AND_REG_MEMBASE;
14074                 case OP_LOR:
14075                         return OP_AMD64_OR_REG_MEMBASE;
14076                 case OP_LXOR:
14077                         return OP_AMD64_XOR_REG_MEMBASE;
14078                 }
14079         }
14080 #endif
14081
14082         return -1;
14083 }
14084
14085 int
14086 mono_op_to_op_imm_noemul (int opcode)
14087 {
14088         switch (opcode) {
14089 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14090         case OP_LSHR:
14091         case OP_LSHL:
14092         case OP_LSHR_UN:
14093                 return -1;
14094 #endif
14095 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14096         case OP_IDIV:
14097         case OP_IDIV_UN:
14098         case OP_IREM:
14099         case OP_IREM_UN:
14100                 return -1;
14101 #endif
14102 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14103         case OP_IMUL:
14104                 return -1;
14105 #endif
14106         default:
14107                 return mono_op_to_op_imm (opcode);
14108         }
14109 }
14110
14111 /**
14112  * mono_handle_global_vregs:
14113  *
14114  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14115  * for them.
14116  */
14117 void
14118 mono_handle_global_vregs (MonoCompile *cfg)
14119 {
14120         gint32 *vreg_to_bb;
14121         MonoBasicBlock *bb;
14122         int i, pos;
14123
14124         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14125
14126 #ifdef MONO_ARCH_SIMD_INTRINSICS
14127         if (cfg->uses_simd_intrinsics)
14128                 mono_simd_simplify_indirection (cfg);
14129 #endif
14130
14131         /* Find local vregs used in more than one bb */
14132         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14133                 MonoInst *ins = bb->code;
14134                 int block_num = bb->block_num;
14135
14136                 if (cfg->verbose_level > 2)
14137                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14138
14139                 cfg->cbb = bb;
14140                 for (; ins; ins = ins->next) {
14141                         const char *spec = INS_INFO (ins->opcode);
14142                         int regtype = 0, regindex;
14143                         gint32 prev_bb;
14144
14145                         if (G_UNLIKELY (cfg->verbose_level > 2))
14146                                 mono_print_ins (ins);
14147
14148                         g_assert (ins->opcode >= MONO_CEE_LAST);
14149
14150                         for (regindex = 0; regindex < 4; regindex ++) {
14151                                 int vreg = 0;
14152
14153                                 if (regindex == 0) {
14154                                         regtype = spec [MONO_INST_DEST];
14155                                         if (regtype == ' ')
14156                                                 continue;
14157                                         vreg = ins->dreg;
14158                                 } else if (regindex == 1) {
14159                                         regtype = spec [MONO_INST_SRC1];
14160                                         if (regtype == ' ')
14161                                                 continue;
14162                                         vreg = ins->sreg1;
14163                                 } else if (regindex == 2) {
14164                                         regtype = spec [MONO_INST_SRC2];
14165                                         if (regtype == ' ')
14166                                                 continue;
14167                                         vreg = ins->sreg2;
14168                                 } else if (regindex == 3) {
14169                                         regtype = spec [MONO_INST_SRC3];
14170                                         if (regtype == ' ')
14171                                                 continue;
14172                                         vreg = ins->sreg3;
14173                                 }
14174
14175 #if SIZEOF_REGISTER == 4
14176                                 /* In the LLVM case, the long opcodes are not decomposed */
14177                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14178                                         /*
14179                                          * Since some instructions reference the original long vreg,
14180                                          * and some reference the two component vregs, it is quite hard
14181                                          * to determine when it needs to be global. So be conservative.
14182                                          */
14183                                         if (!get_vreg_to_inst (cfg, vreg)) {
14184                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14185
14186                                                 if (cfg->verbose_level > 2)
14187                                                         printf ("LONG VREG R%d made global.\n", vreg);
14188                                         }
14189
14190                                         /*
14191                                          * Make the component vregs volatile since the optimizations can
14192                                          * get confused otherwise.
14193                                          */
14194                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14195                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14196                                 }
14197 #endif
14198
14199                                 g_assert (vreg != -1);
14200
14201                                 prev_bb = vreg_to_bb [vreg];
14202                                 if (prev_bb == 0) {
14203                                         /* 0 is a valid block num */
14204                                         vreg_to_bb [vreg] = block_num + 1;
14205                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14206                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14207                                                 continue;
14208
14209                                         if (!get_vreg_to_inst (cfg, vreg)) {
14210                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14211                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14212
14213                                                 switch (regtype) {
14214                                                 case 'i':
14215                                                         if (vreg_is_ref (cfg, vreg))
14216                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14217                                                         else
14218                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14219                                                         break;
14220                                                 case 'l':
14221                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14222                                                         break;
14223                                                 case 'f':
14224                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14225                                                         break;
14226                                                 case 'v':
14227                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14228                                                         break;
14229                                                 default:
14230                                                         g_assert_not_reached ();
14231                                                 }
14232                                         }
14233
14234                                         /* Flag as having been used in more than one bb */
14235                                         vreg_to_bb [vreg] = -1;
14236                                 }
14237                         }
14238                 }
14239         }
14240
14241         /* If a variable is used in only one bblock, convert it into a local vreg */
14242         for (i = 0; i < cfg->num_varinfo; i++) {
14243                 MonoInst *var = cfg->varinfo [i];
14244                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14245
14246                 switch (var->type) {
14247                 case STACK_I4:
14248                 case STACK_OBJ:
14249                 case STACK_PTR:
14250                 case STACK_MP:
14251                 case STACK_VTYPE:
14252 #if SIZEOF_REGISTER == 8
14253                 case STACK_I8:
14254 #endif
14255 #if !defined(TARGET_X86)
14256                 /* Enabling this screws up the fp stack on x86 */
14257                 case STACK_R8:
14258 #endif
14259                         if (mono_arch_is_soft_float ())
14260                                 break;
14261
14262                         /*
14263                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14264                                 break;
14265                         */
14266
14267                         /* Arguments are implicitly global */
14268                         /* Putting R4 vars into registers doesn't work currently */
14269                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14270                         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) {
14271                                 /*
14272                                  * Make that the variable's liveness interval doesn't contain a call, since
14273                                  * that would cause the lvreg to be spilled, making the whole optimization
14274                                  * useless.
14275                                  */
14276                                 /* This is too slow for JIT compilation */
14277 #if 0
14278                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14279                                         MonoInst *ins;
14280                                         int def_index, call_index, ins_index;
14281                                         gboolean spilled = FALSE;
14282
14283                                         def_index = -1;
14284                                         call_index = -1;
14285                                         ins_index = 0;
14286                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14287                                                 const char *spec = INS_INFO (ins->opcode);
14288
14289                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14290                                                         def_index = ins_index;
14291
14292                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14293                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14294                                                         if (call_index > def_index) {
14295                                                                 spilled = TRUE;
14296                                                                 break;
14297                                                         }
14298                                                 }
14299
14300                                                 if (MONO_IS_CALL (ins))
14301                                                         call_index = ins_index;
14302
14303                                                 ins_index ++;
14304                                         }
14305
14306                                         if (spilled)
14307                                                 break;
14308                                 }
14309 #endif
14310
14311                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14312                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14313                                 var->flags |= MONO_INST_IS_DEAD;
14314                                 cfg->vreg_to_inst [var->dreg] = NULL;
14315                         }
14316                         break;
14317                 }
14318         }
14319
14320         /*
14321          * Compress the varinfo and vars tables so the liveness computation is faster and
14322          * takes up less space.
14323          */
14324         pos = 0;
14325         for (i = 0; i < cfg->num_varinfo; ++i) {
14326                 MonoInst *var = cfg->varinfo [i];
14327                 if (pos < i && cfg->locals_start == i)
14328                         cfg->locals_start = pos;
14329                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14330                         if (pos < i) {
14331                                 cfg->varinfo [pos] = cfg->varinfo [i];
14332                                 cfg->varinfo [pos]->inst_c0 = pos;
14333                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14334                                 cfg->vars [pos].idx = pos;
14335 #if SIZEOF_REGISTER == 4
14336                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14337                                         /* Modify the two component vars too */
14338                                         MonoInst *var1;
14339
14340                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14341                                         var1->inst_c0 = pos;
14342                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14343                                         var1->inst_c0 = pos;
14344                                 }
14345 #endif
14346                         }
14347                         pos ++;
14348                 }
14349         }
14350         cfg->num_varinfo = pos;
14351         if (cfg->locals_start > cfg->num_varinfo)
14352                 cfg->locals_start = cfg->num_varinfo;
14353 }
14354
14355 /*
14356  * mono_allocate_gsharedvt_vars:
14357  *
14358  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14359  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14360  */
14361 void
14362 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14363 {
14364         int i;
14365
14366         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14367
14368         for (i = 0; i < cfg->num_varinfo; ++i) {
14369                 MonoInst *ins = cfg->varinfo [i];
14370                 int idx;
14371
14372                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14373                         if (i >= cfg->locals_start) {
14374                                 /* Local */
14375                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14376                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14377                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14378                                 ins->inst_imm = idx;
14379                         } else {
14380                                 /* Arg */
14381                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14382                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14383                         }
14384                 }
14385         }
14386 }
14387
14388 /**
14389  * mono_spill_global_vars:
14390  *
14391  *   Generate spill code for variables which are not allocated to registers,
14392  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14393  * code is generated which could be optimized by the local optimization passes.
14394  */
14395 void
14396 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14397 {
14398         MonoBasicBlock *bb;
14399         char spec2 [16];
14400         int orig_next_vreg;
14401         guint32 *vreg_to_lvreg;
14402         guint32 *lvregs;
14403         guint32 i, lvregs_len;
14404         gboolean dest_has_lvreg = FALSE;
14405         MonoStackType stacktypes [128];
14406         MonoInst **live_range_start, **live_range_end;
14407         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14408
14409         *need_local_opts = FALSE;
14410
14411         memset (spec2, 0, sizeof (spec2));
14412
14413         /* FIXME: Move this function to mini.c */
14414         stacktypes ['i'] = STACK_PTR;
14415         stacktypes ['l'] = STACK_I8;
14416         stacktypes ['f'] = STACK_R8;
14417 #ifdef MONO_ARCH_SIMD_INTRINSICS
14418         stacktypes ['x'] = STACK_VTYPE;
14419 #endif
14420
14421 #if SIZEOF_REGISTER == 4
14422         /* Create MonoInsts for longs */
14423         for (i = 0; i < cfg->num_varinfo; i++) {
14424                 MonoInst *ins = cfg->varinfo [i];
14425
14426                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14427                         switch (ins->type) {
14428                         case STACK_R8:
14429                         case STACK_I8: {
14430                                 MonoInst *tree;
14431
14432                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14433                                         break;
14434
14435                                 g_assert (ins->opcode == OP_REGOFFSET);
14436
14437                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14438                                 g_assert (tree);
14439                                 tree->opcode = OP_REGOFFSET;
14440                                 tree->inst_basereg = ins->inst_basereg;
14441                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14442
14443                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14444                                 g_assert (tree);
14445                                 tree->opcode = OP_REGOFFSET;
14446                                 tree->inst_basereg = ins->inst_basereg;
14447                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14448                                 break;
14449                         }
14450                         default:
14451                                 break;
14452                         }
14453                 }
14454         }
14455 #endif
14456
14457         if (cfg->compute_gc_maps) {
14458                 /* registers need liveness info even for !non refs */
14459                 for (i = 0; i < cfg->num_varinfo; i++) {
14460                         MonoInst *ins = cfg->varinfo [i];
14461
14462                         if (ins->opcode == OP_REGVAR)
14463                                 ins->flags |= MONO_INST_GC_TRACK;
14464                 }
14465         }
14466
14467         /* FIXME: widening and truncation */
14468
14469         /*
14470          * As an optimization, when a variable allocated to the stack is first loaded into
14471          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14472          * the variable again.
14473          */
14474         orig_next_vreg = cfg->next_vreg;
14475         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14476         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14477         lvregs_len = 0;
14478
14479         /*
14480          * These arrays contain the first and last instructions accessing a given
14481          * variable.
14482          * Since we emit bblocks in the same order we process them here, and we
14483          * don't split live ranges, these will precisely describe the live range of
14484          * the variable, i.e. the instruction range where a valid value can be found
14485          * in the variables location.
14486          * The live range is computed using the liveness info computed by the liveness pass.
14487          * We can't use vmv->range, since that is an abstract live range, and we need
14488          * one which is instruction precise.
14489          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14490          */
14491         /* FIXME: Only do this if debugging info is requested */
14492         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14493         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14494         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14495         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14496
14497         /* Add spill loads/stores */
14498         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14499                 MonoInst *ins;
14500
14501                 if (cfg->verbose_level > 2)
14502                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14503
14504                 /* Clear vreg_to_lvreg array */
14505                 for (i = 0; i < lvregs_len; i++)
14506                         vreg_to_lvreg [lvregs [i]] = 0;
14507                 lvregs_len = 0;
14508
14509                 cfg->cbb = bb;
14510                 MONO_BB_FOR_EACH_INS (bb, ins) {
14511                         const char *spec = INS_INFO (ins->opcode);
14512                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14513                         gboolean store, no_lvreg;
14514                         int sregs [MONO_MAX_SRC_REGS];
14515
14516                         if (G_UNLIKELY (cfg->verbose_level > 2))
14517                                 mono_print_ins (ins);
14518
14519                         if (ins->opcode == OP_NOP)
14520                                 continue;
14521
14522                         /*
14523                          * We handle LDADDR here as well, since it can only be decomposed
14524                          * when variable addresses are known.
14525                          */
14526                         if (ins->opcode == OP_LDADDR) {
14527                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14528
14529                                 if (var->opcode == OP_VTARG_ADDR) {
14530                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14531                                         MonoInst *vtaddr = var->inst_left;
14532                                         if (vtaddr->opcode == OP_REGVAR) {
14533                                                 ins->opcode = OP_MOVE;
14534                                                 ins->sreg1 = vtaddr->dreg;
14535                                         }
14536                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14537                                                 ins->opcode = OP_LOAD_MEMBASE;
14538                                                 ins->inst_basereg = vtaddr->inst_basereg;
14539                                                 ins->inst_offset = vtaddr->inst_offset;
14540                                         } else
14541                                                 NOT_IMPLEMENTED;
14542                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14543                                         /* gsharedvt arg passed by ref */
14544                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14545
14546                                         ins->opcode = OP_LOAD_MEMBASE;
14547                                         ins->inst_basereg = var->inst_basereg;
14548                                         ins->inst_offset = var->inst_offset;
14549                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14550                                         MonoInst *load, *load2, *load3;
14551                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14552                                         int reg1, reg2, reg3;
14553                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14554                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14555
14556                                         /*
14557                                          * gsharedvt local.
14558                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14559                                          */
14560
14561                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14562
14563                                         g_assert (info_var);
14564                                         g_assert (locals_var);
14565
14566                                         /* Mark the instruction used to compute the locals var as used */
14567                                         cfg->gsharedvt_locals_var_ins = NULL;
14568
14569                                         /* Load the offset */
14570                                         if (info_var->opcode == OP_REGOFFSET) {
14571                                                 reg1 = alloc_ireg (cfg);
14572                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14573                                         } else if (info_var->opcode == OP_REGVAR) {
14574                                                 load = NULL;
14575                                                 reg1 = info_var->dreg;
14576                                         } else {
14577                                                 g_assert_not_reached ();
14578                                         }
14579                                         reg2 = alloc_ireg (cfg);
14580                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14581                                         /* Load the locals area address */
14582                                         reg3 = alloc_ireg (cfg);
14583                                         if (locals_var->opcode == OP_REGOFFSET) {
14584                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14585                                         } else if (locals_var->opcode == OP_REGVAR) {
14586                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14587                                         } else {
14588                                                 g_assert_not_reached ();
14589                                         }
14590                                         /* Compute the address */
14591                                         ins->opcode = OP_PADD;
14592                                         ins->sreg1 = reg3;
14593                                         ins->sreg2 = reg2;
14594
14595                                         mono_bblock_insert_before_ins (bb, ins, load3);
14596                                         mono_bblock_insert_before_ins (bb, load3, load2);
14597                                         if (load)
14598                                                 mono_bblock_insert_before_ins (bb, load2, load);
14599                                 } else {
14600                                         g_assert (var->opcode == OP_REGOFFSET);
14601
14602                                         ins->opcode = OP_ADD_IMM;
14603                                         ins->sreg1 = var->inst_basereg;
14604                                         ins->inst_imm = var->inst_offset;
14605                                 }
14606
14607                                 *need_local_opts = TRUE;
14608                                 spec = INS_INFO (ins->opcode);
14609                         }
14610
14611                         if (ins->opcode < MONO_CEE_LAST) {
14612                                 mono_print_ins (ins);
14613                                 g_assert_not_reached ();
14614                         }
14615
14616                         /*
14617                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14618                          * src register.
14619                          * FIXME:
14620                          */
14621                         if (MONO_IS_STORE_MEMBASE (ins)) {
14622                                 tmp_reg = ins->dreg;
14623                                 ins->dreg = ins->sreg2;
14624                                 ins->sreg2 = tmp_reg;
14625                                 store = TRUE;
14626
14627                                 spec2 [MONO_INST_DEST] = ' ';
14628                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14629                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14630                                 spec2 [MONO_INST_SRC3] = ' ';
14631                                 spec = spec2;
14632                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14633                                 g_assert_not_reached ();
14634                         else
14635                                 store = FALSE;
14636                         no_lvreg = FALSE;
14637
14638                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14639                                 printf ("\t %.3s %d", spec, ins->dreg);
14640                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14641                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14642                                         printf (" %d", sregs [srcindex]);
14643                                 printf ("\n");
14644                         }
14645
14646                         /***************/
14647                         /*    DREG     */
14648                         /***************/
14649                         regtype = spec [MONO_INST_DEST];
14650                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14651                         prev_dreg = -1;
14652
14653                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14654                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14655                                 MonoInst *store_ins;
14656                                 int store_opcode;
14657                                 MonoInst *def_ins = ins;
14658                                 int dreg = ins->dreg; /* The original vreg */
14659
14660                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14661
14662                                 if (var->opcode == OP_REGVAR) {
14663                                         ins->dreg = var->dreg;
14664                                 } 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)) {
14665                                         /*
14666                                          * Instead of emitting a load+store, use a _membase opcode.
14667                                          */
14668                                         g_assert (var->opcode == OP_REGOFFSET);
14669                                         if (ins->opcode == OP_MOVE) {
14670                                                 NULLIFY_INS (ins);
14671                                                 def_ins = NULL;
14672                                         } else {
14673                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14674                                                 ins->inst_basereg = var->inst_basereg;
14675                                                 ins->inst_offset = var->inst_offset;
14676                                                 ins->dreg = -1;
14677                                         }
14678                                         spec = INS_INFO (ins->opcode);
14679                                 } else {
14680                                         guint32 lvreg;
14681
14682                                         g_assert (var->opcode == OP_REGOFFSET);
14683
14684                                         prev_dreg = ins->dreg;
14685
14686                                         /* Invalidate any previous lvreg for this vreg */
14687                                         vreg_to_lvreg [ins->dreg] = 0;
14688
14689                                         lvreg = 0;
14690
14691                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14692                                                 regtype = 'l';
14693                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14694                                         }
14695
14696                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14697
14698 #if SIZEOF_REGISTER != 8
14699                                         if (regtype == 'l') {
14700                                                 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));
14701                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14702                                                 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));
14703                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14704                                                 def_ins = store_ins;
14705                                         }
14706                                         else
14707 #endif
14708                                         {
14709                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14710
14711                                                 /* Try to fuse the store into the instruction itself */
14712                                                 /* FIXME: Add more instructions */
14713                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14714                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14715                                                         ins->inst_imm = ins->inst_c0;
14716                                                         ins->inst_destbasereg = var->inst_basereg;
14717                                                         ins->inst_offset = var->inst_offset;
14718                                                         spec = INS_INFO (ins->opcode);
14719                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14720                                                         ins->opcode = store_opcode;
14721                                                         ins->inst_destbasereg = var->inst_basereg;
14722                                                         ins->inst_offset = var->inst_offset;
14723
14724                                                         no_lvreg = TRUE;
14725
14726                                                         tmp_reg = ins->dreg;
14727                                                         ins->dreg = ins->sreg2;
14728                                                         ins->sreg2 = tmp_reg;
14729                                                         store = TRUE;
14730
14731                                                         spec2 [MONO_INST_DEST] = ' ';
14732                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14733                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14734                                                         spec2 [MONO_INST_SRC3] = ' ';
14735                                                         spec = spec2;
14736                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14737                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14738                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14739                                                         ins->dreg = -1;
14740                                                         ins->inst_basereg = var->inst_basereg;
14741                                                         ins->inst_offset = var->inst_offset;
14742                                                         spec = INS_INFO (ins->opcode);
14743                                                 } else {
14744                                                         /* printf ("INS: "); mono_print_ins (ins); */
14745                                                         /* Create a store instruction */
14746                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14747
14748                                                         /* Insert it after the instruction */
14749                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14750
14751                                                         def_ins = store_ins;
14752
14753                                                         /*
14754                                                          * We can't assign ins->dreg to var->dreg here, since the
14755                                                          * sregs could use it. So set a flag, and do it after
14756                                                          * the sregs.
14757                                                          */
14758                                                         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)))
14759                                                                 dest_has_lvreg = TRUE;
14760                                                 }
14761                                         }
14762                                 }
14763
14764                                 if (def_ins && !live_range_start [dreg]) {
14765                                         live_range_start [dreg] = def_ins;
14766                                         live_range_start_bb [dreg] = bb;
14767                                 }
14768
14769                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14770                                         MonoInst *tmp;
14771
14772                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14773                                         tmp->inst_c1 = dreg;
14774                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14775                                 }
14776                         }
14777
14778                         /************/
14779                         /*  SREGS   */
14780                         /************/
14781                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14782                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14783                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14784                                 sreg = sregs [srcindex];
14785
14786                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14787                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14788                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14789                                         MonoInst *use_ins = ins;
14790                                         MonoInst *load_ins;
14791                                         guint32 load_opcode;
14792
14793                                         if (var->opcode == OP_REGVAR) {
14794                                                 sregs [srcindex] = var->dreg;
14795                                                 //mono_inst_set_src_registers (ins, sregs);
14796                                                 live_range_end [sreg] = use_ins;
14797                                                 live_range_end_bb [sreg] = bb;
14798
14799                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14800                                                         MonoInst *tmp;
14801
14802                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14803                                                         /* var->dreg is a hreg */
14804                                                         tmp->inst_c1 = sreg;
14805                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14806                                                 }
14807
14808                                                 continue;
14809                                         }
14810
14811                                         g_assert (var->opcode == OP_REGOFFSET);
14812
14813                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14814
14815                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14816
14817                                         if (vreg_to_lvreg [sreg]) {
14818                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14819
14820                                                 /* The variable is already loaded to an lvreg */
14821                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14822                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14823                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14824                                                 //mono_inst_set_src_registers (ins, sregs);
14825                                                 continue;
14826                                         }
14827
14828                                         /* Try to fuse the load into the instruction */
14829                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14830                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14831                                                 sregs [0] = var->inst_basereg;
14832                                                 //mono_inst_set_src_registers (ins, sregs);
14833                                                 ins->inst_offset = var->inst_offset;
14834                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14835                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14836                                                 sregs [1] = var->inst_basereg;
14837                                                 //mono_inst_set_src_registers (ins, sregs);
14838                                                 ins->inst_offset = var->inst_offset;
14839                                         } else {
14840                                                 if (MONO_IS_REAL_MOVE (ins)) {
14841                                                         ins->opcode = OP_NOP;
14842                                                         sreg = ins->dreg;
14843                                                 } else {
14844                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14845
14846                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14847
14848                                                         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) {
14849                                                                 if (var->dreg == prev_dreg) {
14850                                                                         /*
14851                                                                          * sreg refers to the value loaded by the load
14852                                                                          * emitted below, but we need to use ins->dreg
14853                                                                          * since it refers to the store emitted earlier.
14854                                                                          */
14855                                                                         sreg = ins->dreg;
14856                                                                 }
14857                                                                 g_assert (sreg != -1);
14858                                                                 vreg_to_lvreg [var->dreg] = sreg;
14859                                                                 g_assert (lvregs_len < 1024);
14860                                                                 lvregs [lvregs_len ++] = var->dreg;
14861                                                         }
14862                                                 }
14863
14864                                                 sregs [srcindex] = sreg;
14865                                                 //mono_inst_set_src_registers (ins, sregs);
14866
14867 #if SIZEOF_REGISTER != 8
14868                                                 if (regtype == 'l') {
14869                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14870                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14871                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14872                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14873                                                         use_ins = load_ins;
14874                                                 }
14875                                                 else
14876 #endif
14877                                                 {
14878 #if SIZEOF_REGISTER == 4
14879                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14880 #endif
14881                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14882                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14883                                                         use_ins = load_ins;
14884                                                 }
14885                                         }
14886
14887                                         if (var->dreg < orig_next_vreg) {
14888                                                 live_range_end [var->dreg] = use_ins;
14889                                                 live_range_end_bb [var->dreg] = bb;
14890                                         }
14891
14892                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14893                                                 MonoInst *tmp;
14894
14895                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14896                                                 tmp->inst_c1 = var->dreg;
14897                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14898                                         }
14899                                 }
14900                         }
14901                         mono_inst_set_src_registers (ins, sregs);
14902
14903                         if (dest_has_lvreg) {
14904                                 g_assert (ins->dreg != -1);
14905                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14906                                 g_assert (lvregs_len < 1024);
14907                                 lvregs [lvregs_len ++] = prev_dreg;
14908                                 dest_has_lvreg = FALSE;
14909                         }
14910
14911                         if (store) {
14912                                 tmp_reg = ins->dreg;
14913                                 ins->dreg = ins->sreg2;
14914                                 ins->sreg2 = tmp_reg;
14915                         }
14916
14917                         if (MONO_IS_CALL (ins)) {
14918                                 /* Clear vreg_to_lvreg array */
14919                                 for (i = 0; i < lvregs_len; i++)
14920                                         vreg_to_lvreg [lvregs [i]] = 0;
14921                                 lvregs_len = 0;
14922                         } else if (ins->opcode == OP_NOP) {
14923                                 ins->dreg = -1;
14924                                 MONO_INST_NULLIFY_SREGS (ins);
14925                         }
14926
14927                         if (cfg->verbose_level > 2)
14928                                 mono_print_ins_index (1, ins);
14929                 }
14930
14931                 /* Extend the live range based on the liveness info */
14932                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14933                         for (i = 0; i < cfg->num_varinfo; i ++) {
14934                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14935
14936                                 if (vreg_is_volatile (cfg, vi->vreg))
14937                                         /* The liveness info is incomplete */
14938                                         continue;
14939
14940                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14941                                         /* Live from at least the first ins of this bb */
14942                                         live_range_start [vi->vreg] = bb->code;
14943                                         live_range_start_bb [vi->vreg] = bb;
14944                                 }
14945
14946                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14947                                         /* Live at least until the last ins of this bb */
14948                                         live_range_end [vi->vreg] = bb->last_ins;
14949                                         live_range_end_bb [vi->vreg] = bb;
14950                                 }
14951                         }
14952                 }
14953         }
14954
14955         /*
14956          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14957          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14958          */
14959         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14960                 for (i = 0; i < cfg->num_varinfo; ++i) {
14961                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14962                         MonoInst *ins;
14963
14964                         if (live_range_start [vreg]) {
14965                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
14966                                 ins->inst_c0 = i;
14967                                 ins->inst_c1 = vreg;
14968                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
14969                         }
14970                         if (live_range_end [vreg]) {
14971                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
14972                                 ins->inst_c0 = i;
14973                                 ins->inst_c1 = vreg;
14974                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
14975                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
14976                                 else
14977                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
14978                         }
14979                 }
14980         }
14981
14982         if (cfg->gsharedvt_locals_var_ins) {
14983                 /* Nullify if unused */
14984                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
14985                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
14986         }
14987
14988         g_free (live_range_start);
14989         g_free (live_range_end);
14990         g_free (live_range_start_bb);
14991         g_free (live_range_end_bb);
14992 }
14993
14994 static void
14995 mono_decompose_typecheck (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
14996 {
14997         MonoInst *ret, *move, *source;
14998         MonoClass *klass = ins->klass;
14999         int context_used = mini_class_check_context_used (cfg, klass);
15000         int is_isinst = ins->opcode == OP_ISINST;
15001         g_assert (is_isinst || ins->opcode == OP_CASTCLASS);
15002         source = get_vreg_to_inst (cfg, ins->sreg1);
15003         if (!source || source == (MonoInst *) -1)
15004                 source = mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, ins->sreg1);
15005         g_assert (source && source != (MonoInst *) -1);
15006
15007         MonoBasicBlock *first_bb;
15008         NEW_BBLOCK (cfg, first_bb);
15009         cfg->cbb = first_bb;
15010
15011         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
15012                 if (is_isinst)
15013                         ret = emit_isinst_with_cache_nonshared (cfg, source, klass);
15014                 else
15015                         ret = emit_castclass_with_cache_nonshared (cfg, source, klass);
15016         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
15017                 MonoInst *iargs [1];
15018                 int costs;
15019
15020                 iargs [0] = source;
15021                 if (is_isinst) {
15022                         MonoMethod *wrapper = mono_marshal_get_isinst (klass);
15023                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15024                 } else {
15025                         MonoMethod *wrapper = mono_marshal_get_castclass (klass);
15026                         save_cast_details (cfg, klass, source->dreg, TRUE);
15027                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper), iargs, 0, 0, TRUE);
15028                         reset_cast_details (cfg);
15029                 }
15030                 g_assert (costs > 0);
15031                 ret = iargs [0];
15032         } else {
15033                 if (is_isinst)
15034                         ret = handle_isinst (cfg, klass, source, context_used);
15035                 else
15036                         ret = handle_castclass (cfg, klass, source, context_used);
15037         }
15038         EMIT_NEW_UNALU (cfg, move, OP_MOVE, ins->dreg, ret->dreg);
15039
15040         g_assert (cfg->cbb->code || first_bb->code);
15041         MonoInst *prev = ins->prev;
15042         mono_replace_ins (cfg, bb, ins, &prev, first_bb, cfg->cbb);
15043 }
15044
15045 void
15046 mono_decompose_typechecks (MonoCompile *cfg)
15047 {
15048         for (MonoBasicBlock *bb = cfg->bb_entry; bb; bb = bb->next_bb) {
15049                 MonoInst *ins;
15050                 MONO_BB_FOR_EACH_INS (bb, ins) {
15051                         switch (ins->opcode) {
15052                         case OP_ISINST:
15053                         case OP_CASTCLASS:
15054                                 mono_decompose_typecheck (cfg, bb, ins);
15055                                 break;
15056                         }
15057                 }
15058         }
15059 }
15060
15061
15062 /**
15063  * FIXME:
15064  * - use 'iadd' instead of 'int_add'
15065  * - handling ovf opcodes: decompose in method_to_ir.
15066  * - unify iregs/fregs
15067  *   -> partly done, the missing parts are:
15068  *   - a more complete unification would involve unifying the hregs as well, so
15069  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15070  *     would no longer map to the machine hregs, so the code generators would need to
15071  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15072  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15073  *     fp/non-fp branches speeds it up by about 15%.
15074  * - use sext/zext opcodes instead of shifts
15075  * - add OP_ICALL
15076  * - get rid of TEMPLOADs if possible and use vregs instead
15077  * - clean up usage of OP_P/OP_ opcodes
15078  * - cleanup usage of DUMMY_USE
15079  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15080  *   stack
15081  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15082  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15083  * - make sure handle_stack_args () is called before the branch is emitted
15084  * - when the new IR is done, get rid of all unused stuff
15085  * - COMPARE/BEQ as separate instructions or unify them ?
15086  *   - keeping them separate allows specialized compare instructions like
15087  *     compare_imm, compare_membase
15088  *   - most back ends unify fp compare+branch, fp compare+ceq
15089  * - integrate mono_save_args into inline_method
15090  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15091  * - handle long shift opts on 32 bit platforms somehow: they require
15092  *   3 sregs (2 for arg1 and 1 for arg2)
15093  * - make byref a 'normal' type.
15094  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15095  *   variable if needed.
15096  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15097  *   like inline_method.
15098  * - remove inlining restrictions
15099  * - fix LNEG and enable cfold of INEG
15100  * - generalize x86 optimizations like ldelema as a peephole optimization
15101  * - add store_mem_imm for amd64
15102  * - optimize the loading of the interruption flag in the managed->native wrappers
15103  * - avoid special handling of OP_NOP in passes
15104  * - move code inserting instructions into one function/macro.
15105  * - try a coalescing phase after liveness analysis
15106  * - add float -> vreg conversion + local optimizations on !x86
15107  * - figure out how to handle decomposed branches during optimizations, ie.
15108  *   compare+branch, op_jump_table+op_br etc.
15109  * - promote RuntimeXHandles to vregs
15110  * - vtype cleanups:
15111  *   - add a NEW_VARLOADA_VREG macro
15112  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15113  *   accessing vtype fields.
15114  * - get rid of I8CONST on 64 bit platforms
15115  * - dealing with the increase in code size due to branches created during opcode
15116  *   decomposition:
15117  *   - use extended basic blocks
15118  *     - all parts of the JIT
15119  *     - handle_global_vregs () && local regalloc
15120  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15121  * - sources of increase in code size:
15122  *   - vtypes
15123  *   - long compares
15124  *   - isinst and castclass
15125  *   - lvregs not allocated to global registers even if used multiple times
15126  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15127  *   meaningful.
15128  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15129  * - add all micro optimizations from the old JIT
15130  * - put tree optimizations into the deadce pass
15131  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15132  *   specific function.
15133  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15134  *   fcompare + branchCC.
15135  * - create a helper function for allocating a stack slot, taking into account
15136  *   MONO_CFG_HAS_SPILLUP.
15137  * - merge r68207.
15138  * - merge the ia64 switch changes.
15139  * - optimize mono_regstate2_alloc_int/float.
15140  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15141  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15142  *   parts of the tree could be separated by other instructions, killing the tree
15143  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15144  *   instructions if the result of the load is used multiple times ?
15145  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15146  * - LAST MERGE: 108395.
15147  * - when returning vtypes in registers, generate IR and append it to the end of the
15148  *   last bb instead of doing it in the epilog.
15149  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15150  */
15151
15152 /*
15153
15154 NOTES
15155 -----
15156
15157 - When to decompose opcodes:
15158   - earlier: this makes some optimizations hard to implement, since the low level IR
15159   no longer contains the neccessary information. But it is easier to do.
15160   - later: harder to implement, enables more optimizations.
15161 - Branches inside bblocks:
15162   - created when decomposing complex opcodes.
15163     - branches to another bblock: harmless, but not tracked by the branch
15164       optimizations, so need to branch to a label at the start of the bblock.
15165     - branches to inside the same bblock: very problematic, trips up the local
15166       reg allocator. Can be fixed by spitting the current bblock, but that is a
15167       complex operation, since some local vregs can become global vregs etc.
15168 - Local/global vregs:
15169   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15170     local register allocator.
15171   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15172     structure, created by mono_create_var (). Assigned to hregs or the stack by
15173     the global register allocator.
15174 - When to do optimizations like alu->alu_imm:
15175   - earlier -> saves work later on since the IR will be smaller/simpler
15176   - later -> can work on more instructions
15177 - Handling of valuetypes:
15178   - When a vtype is pushed on the stack, a new temporary is created, an
15179     instruction computing its address (LDADDR) is emitted and pushed on
15180     the stack. Need to optimize cases when the vtype is used immediately as in
15181     argument passing, stloc etc.
15182 - Instead of the to_end stuff in the old JIT, simply call the function handling
15183   the values on the stack before emitting the last instruction of the bb.
15184 */
15185
15186 #endif /* DISABLE_JIT */