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_castclass_with_cache (MonoCompile *cfg, MonoClass *klass, MonoInst **args)
4475 {
4476         MonoMethod *mono_castclass;
4477         MonoInst *res;
4478
4479         mono_castclass = mono_marshal_get_castclass_with_cache ();
4480
4481         save_cast_details (cfg, klass, args [0]->dreg, TRUE);
4482         res = mono_emit_method_call (cfg, mono_castclass, args, NULL);
4483         reset_cast_details (cfg);
4484
4485         return res;
4486 }
4487
4488 static int
4489 get_castclass_cache_idx (MonoCompile *cfg)
4490 {
4491         /* Each CASTCLASS_CACHE patch needs a unique index which identifies the call site */
4492         cfg->castclass_cache_index ++;
4493         return (cfg->method_index << 16) | cfg->castclass_cache_index;
4494 }
4495
4496 static MonoInst*
4497 emit_castclass_with_cache_nonshared (MonoCompile *cfg, MonoInst *obj, MonoClass *klass)
4498 {
4499         MonoInst *args [3];
4500         int idx;
4501
4502         /* obj */
4503         args [0] = obj;
4504
4505         /* klass */
4506         EMIT_NEW_CLASSCONST (cfg, args [1], klass);
4507
4508         /* inline cache*/
4509         idx = get_castclass_cache_idx (cfg);
4510         args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
4511
4512         /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
4513         return emit_castclass_with_cache (cfg, klass, args);
4514 }
4515
4516 /*
4517  * Returns NULL and set the cfg exception on error.
4518  */
4519 static MonoInst*
4520 handle_castclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src, guint8 *ip, int *inline_costs)
4521 {
4522         MonoBasicBlock *is_null_bb;
4523         int obj_reg = src->dreg;
4524         int vtable_reg = alloc_preg (cfg);
4525         int context_used;
4526         MonoInst *klass_inst = NULL, *res;
4527
4528         if (src->opcode == OP_PCONST && src->inst_p0 == 0)
4529                 return src;
4530
4531         context_used = mini_class_check_context_used (cfg, klass);
4532
4533         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4534                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4535                 (*inline_costs) += 2;
4536                 return res;
4537         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4538                 MonoMethod *mono_castclass;
4539                 MonoInst *iargs [1];
4540                 int costs;
4541
4542                 mono_castclass = mono_marshal_get_castclass (klass);
4543                 iargs [0] = src;
4544
4545                 save_cast_details (cfg, klass, src->dreg, TRUE);
4546                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4547                                                            iargs, ip, cfg->real_offset, TRUE);
4548                 reset_cast_details (cfg);
4549                 CHECK_CFG_EXCEPTION;
4550                 g_assert (costs > 0);
4551
4552                 cfg->real_offset += 5;
4553
4554                 (*inline_costs) += costs;
4555
4556                 return src;
4557         }
4558
4559         if (context_used) {
4560                 MonoInst *args [3];
4561
4562                 if (mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4563                         MonoInst *cache_ins;
4564
4565                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4566
4567                         /* obj */
4568                         args [0] = src;
4569
4570                         /* klass - it's the second element of the cache entry*/
4571                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4572
4573                         /* cache */
4574                         args [2] = cache_ins;
4575
4576                         return emit_castclass_with_cache (cfg, klass, args);
4577                 }
4578
4579                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4580         }
4581
4582         NEW_BBLOCK (cfg, is_null_bb);
4583
4584         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4585         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4586
4587         save_cast_details (cfg, klass, obj_reg, FALSE);
4588
4589         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4590                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4591                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4592         } else {
4593                 int klass_reg = alloc_preg (cfg);
4594
4595                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4596
4597                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4598                         /* the remoting code is broken, access the class for now */
4599                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4600                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4601                                 if (!vt) {
4602                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4603                                         cfg->exception_ptr = klass;
4604                                         return NULL;
4605                                 }
4606                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4607                         } else {
4608                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4609                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4610                         }
4611                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4612                 } else {
4613                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4614                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4615                 }
4616         }
4617
4618         MONO_START_BB (cfg, is_null_bb);
4619
4620         reset_cast_details (cfg);
4621
4622         return src;
4623
4624 exception_exit:
4625         return NULL;
4626 }
4627
4628 /*
4629  * Returns NULL and set the cfg exception on error.
4630  */
4631 static MonoInst*
4632 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4633 {
4634         MonoInst *ins;
4635         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4636         int obj_reg = src->dreg;
4637         int vtable_reg = alloc_preg (cfg);
4638         int res_reg = alloc_ireg_ref (cfg);
4639         MonoInst *klass_inst = NULL;
4640
4641         if (context_used) {
4642                 MonoInst *args [3];
4643
4644                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4645                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4646                         MonoInst *cache_ins;
4647
4648                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4649
4650                         /* obj */
4651                         args [0] = src;
4652
4653                         /* klass - it's the second element of the cache entry*/
4654                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4655
4656                         /* cache */
4657                         args [2] = cache_ins;
4658
4659                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4660                 }
4661
4662                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4663         }
4664
4665         NEW_BBLOCK (cfg, is_null_bb);
4666         NEW_BBLOCK (cfg, false_bb);
4667         NEW_BBLOCK (cfg, end_bb);
4668
4669         /* Do the assignment at the beginning, so the other assignment can be if converted */
4670         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4671         ins->type = STACK_OBJ;
4672         ins->klass = klass;
4673
4674         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4675         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4676
4677         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4678
4679         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4680                 g_assert (!context_used);
4681                 /* the is_null_bb target simply copies the input register to the output */
4682                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4683         } else {
4684                 int klass_reg = alloc_preg (cfg);
4685
4686                 if (klass->rank) {
4687                         int rank_reg = alloc_preg (cfg);
4688                         int eclass_reg = alloc_preg (cfg);
4689
4690                         g_assert (!context_used);
4691                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4692                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4693                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4694                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4695                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4696                         if (klass->cast_class == mono_defaults.object_class) {
4697                                 int parent_reg = alloc_preg (cfg);
4698                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4699                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4700                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4701                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4702                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4703                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4704                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4705                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4706                         } else if (klass->cast_class == mono_defaults.enum_class) {
4707                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4708                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4709                         } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
4710                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4711                         } else {
4712                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4713                                         /* Check that the object is a vector too */
4714                                         int bounds_reg = alloc_preg (cfg);
4715                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4716                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4717                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4718                                 }
4719
4720                                 /* the is_null_bb target simply copies the input register to the output */
4721                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4722                         }
4723                 } else if (mono_class_is_nullable (klass)) {
4724                         g_assert (!context_used);
4725                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4726                         /* the is_null_bb target simply copies the input register to the output */
4727                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4728                 } else {
4729                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4730                                 g_assert (!context_used);
4731                                 /* the remoting code is broken, access the class for now */
4732                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4733                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4734                                         if (!vt) {
4735                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4736                                                 cfg->exception_ptr = klass;
4737                                                 return NULL;
4738                                         }
4739                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4740                                 } else {
4741                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4742                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4743                                 }
4744                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4745                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4746                         } else {
4747                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4748                                 /* the is_null_bb target simply copies the input register to the output */
4749                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4750                         }
4751                 }
4752         }
4753
4754         MONO_START_BB (cfg, false_bb);
4755
4756         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4757         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4758
4759         MONO_START_BB (cfg, is_null_bb);
4760
4761         MONO_START_BB (cfg, end_bb);
4762
4763         return ins;
4764 }
4765
4766 static MonoInst*
4767 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4768 {
4769         /* This opcode takes as input an object reference and a class, and returns:
4770         0) if the object is an instance of the class,
4771         1) if the object is not instance of the class,
4772         2) if the object is a proxy whose type cannot be determined */
4773
4774         MonoInst *ins;
4775 #ifndef DISABLE_REMOTING
4776         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4777 #else
4778         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4779 #endif
4780         int obj_reg = src->dreg;
4781         int dreg = alloc_ireg (cfg);
4782         int tmp_reg;
4783 #ifndef DISABLE_REMOTING
4784         int klass_reg = alloc_preg (cfg);
4785 #endif
4786
4787         NEW_BBLOCK (cfg, true_bb);
4788         NEW_BBLOCK (cfg, false_bb);
4789         NEW_BBLOCK (cfg, end_bb);
4790 #ifndef DISABLE_REMOTING
4791         NEW_BBLOCK (cfg, false2_bb);
4792         NEW_BBLOCK (cfg, no_proxy_bb);
4793 #endif
4794
4795         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4796         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4797
4798         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4799 #ifndef DISABLE_REMOTING
4800                 NEW_BBLOCK (cfg, interface_fail_bb);
4801 #endif
4802
4803                 tmp_reg = alloc_preg (cfg);
4804                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4805 #ifndef DISABLE_REMOTING
4806                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4807                 MONO_START_BB (cfg, interface_fail_bb);
4808                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4809
4810                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4811
4812                 tmp_reg = alloc_preg (cfg);
4813                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4814                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4815                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4816 #else
4817                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4818 #endif
4819         } else {
4820 #ifndef DISABLE_REMOTING
4821                 tmp_reg = alloc_preg (cfg);
4822                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4823                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4824
4825                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4826                 tmp_reg = alloc_preg (cfg);
4827                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4828                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4829
4830                 tmp_reg = alloc_preg (cfg);
4831                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4832                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4833                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4834
4835                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4836                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4837
4838                 MONO_START_BB (cfg, no_proxy_bb);
4839
4840                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4841 #else
4842                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4843 #endif
4844         }
4845
4846         MONO_START_BB (cfg, false_bb);
4847
4848         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4849         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4850
4851 #ifndef DISABLE_REMOTING
4852         MONO_START_BB (cfg, false2_bb);
4853
4854         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4855         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4856 #endif
4857
4858         MONO_START_BB (cfg, true_bb);
4859
4860         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4861
4862         MONO_START_BB (cfg, end_bb);
4863
4864         /* FIXME: */
4865         MONO_INST_NEW (cfg, ins, OP_ICONST);
4866         ins->dreg = dreg;
4867         ins->type = STACK_I4;
4868
4869         return ins;
4870 }
4871
4872 static MonoInst*
4873 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4874 {
4875         /* This opcode takes as input an object reference and a class, and returns:
4876         0) if the object is an instance of the class,
4877         1) if the object is a proxy whose type cannot be determined
4878         an InvalidCastException exception is thrown otherwhise*/
4879
4880         MonoInst *ins;
4881 #ifndef DISABLE_REMOTING
4882         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4883 #else
4884         MonoBasicBlock *ok_result_bb;
4885 #endif
4886         int obj_reg = src->dreg;
4887         int dreg = alloc_ireg (cfg);
4888         int tmp_reg = alloc_preg (cfg);
4889
4890 #ifndef DISABLE_REMOTING
4891         int klass_reg = alloc_preg (cfg);
4892         NEW_BBLOCK (cfg, end_bb);
4893 #endif
4894
4895         NEW_BBLOCK (cfg, ok_result_bb);
4896
4897         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4898         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4899
4900         save_cast_details (cfg, klass, obj_reg, FALSE);
4901
4902         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4903 #ifndef DISABLE_REMOTING
4904                 NEW_BBLOCK (cfg, interface_fail_bb);
4905
4906                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4907                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4908                 MONO_START_BB (cfg, interface_fail_bb);
4909                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4910
4911                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4912
4913                 tmp_reg = alloc_preg (cfg);
4914                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4915                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4916                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4917
4918                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4919                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4920 #else
4921                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4922                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4923                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4924 #endif
4925         } else {
4926 #ifndef DISABLE_REMOTING
4927                 NEW_BBLOCK (cfg, no_proxy_bb);
4928
4929                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4930                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4931                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4932
4933                 tmp_reg = alloc_preg (cfg);
4934                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4935                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4936
4937                 tmp_reg = alloc_preg (cfg);
4938                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4939                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4940                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4941
4942                 NEW_BBLOCK (cfg, fail_1_bb);
4943
4944                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4945
4946                 MONO_START_BB (cfg, fail_1_bb);
4947
4948                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4949                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4950
4951                 MONO_START_BB (cfg, no_proxy_bb);
4952
4953                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4954 #else
4955                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4956 #endif
4957         }
4958
4959         MONO_START_BB (cfg, ok_result_bb);
4960
4961         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4962
4963 #ifndef DISABLE_REMOTING
4964         MONO_START_BB (cfg, end_bb);
4965 #endif
4966
4967         /* FIXME: */
4968         MONO_INST_NEW (cfg, ins, OP_ICONST);
4969         ins->dreg = dreg;
4970         ins->type = STACK_I4;
4971
4972         return ins;
4973 }
4974
4975 static G_GNUC_UNUSED MonoInst*
4976 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4977 {
4978         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4979         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4980         gboolean is_i4;
4981
4982         switch (enum_type->type) {
4983         case MONO_TYPE_I8:
4984         case MONO_TYPE_U8:
4985 #if SIZEOF_REGISTER == 8
4986         case MONO_TYPE_I:
4987         case MONO_TYPE_U:
4988 #endif
4989                 is_i4 = FALSE;
4990                 break;
4991         default:
4992                 is_i4 = TRUE;
4993                 break;
4994         }
4995
4996         {
4997                 MonoInst *load, *and_, *cmp, *ceq;
4998                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4999                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
5000                 int dest_reg = alloc_ireg (cfg);
5001
5002                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5003                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5004                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5005                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5006
5007                 ceq->type = STACK_I4;
5008
5009                 if (!is_i4) {
5010                         load = mono_decompose_opcode (cfg, load);
5011                         and_ = mono_decompose_opcode (cfg, and_);
5012                         cmp = mono_decompose_opcode (cfg, cmp);
5013                         ceq = mono_decompose_opcode (cfg, ceq);
5014                 }
5015
5016                 return ceq;
5017         }
5018 }
5019
5020 /*
5021  * Returns NULL and set the cfg exception on error.
5022  */
5023 static G_GNUC_UNUSED MonoInst*
5024 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5025 {
5026         MonoInst *ptr;
5027         int dreg;
5028         gpointer trampoline;
5029         MonoInst *obj, *method_ins, *tramp_ins;
5030         MonoDomain *domain;
5031         guint8 **code_slot;
5032
5033         if (virtual_ && !cfg->llvm_only) {
5034                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5035                 g_assert (invoke);
5036
5037                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5038                         return NULL;
5039         }
5040
5041         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5042         if (!obj)
5043                 return NULL;
5044
5045         /* Inline the contents of mono_delegate_ctor */
5046
5047         /* Set target field */
5048         /* Optimize away setting of NULL target */
5049         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5050                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5051                 if (cfg->gen_write_barriers) {
5052                         dreg = alloc_preg (cfg);
5053                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5054                         emit_write_barrier (cfg, ptr, target);
5055                 }
5056         }
5057
5058         /* Set method field */
5059         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5060         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5061
5062         /*
5063          * To avoid looking up the compiled code belonging to the target method
5064          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5065          * store it, and we fill it after the method has been compiled.
5066          */
5067         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5068                 MonoInst *code_slot_ins;
5069
5070                 if (context_used) {
5071                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5072                 } else {
5073                         domain = mono_domain_get ();
5074                         mono_domain_lock (domain);
5075                         if (!domain_jit_info (domain)->method_code_hash)
5076                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5077                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5078                         if (!code_slot) {
5079                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5080                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5081                         }
5082                         mono_domain_unlock (domain);
5083
5084                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5085                 }
5086                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5087         }
5088
5089         if (cfg->llvm_only) {
5090                 MonoInst *args [16];
5091
5092                 if (virtual_) {
5093                         args [0] = obj;
5094                         args [1] = target;
5095                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5096                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5097                 } else {
5098                         args [0] = obj;
5099                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5100                 }
5101
5102                 return obj;
5103         }
5104
5105         if (cfg->compile_aot) {
5106                 MonoDelegateClassMethodPair *del_tramp;
5107
5108                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5109                 del_tramp->klass = klass;
5110                 del_tramp->method = context_used ? NULL : method;
5111                 del_tramp->is_virtual = virtual_;
5112                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5113         } else {
5114                 if (virtual_)
5115                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5116                 else
5117                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5118                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5119         }
5120
5121         /* Set invoke_impl field */
5122         if (virtual_) {
5123                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5124         } else {
5125                 dreg = alloc_preg (cfg);
5126                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5127                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5128
5129                 dreg = alloc_preg (cfg);
5130                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5131                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5132         }
5133
5134         dreg = alloc_preg (cfg);
5135         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5136         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5137
5138         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5139
5140         return obj;
5141 }
5142
5143 static MonoInst*
5144 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5145 {
5146         MonoJitICallInfo *info;
5147
5148         /* Need to register the icall so it gets an icall wrapper */
5149         info = mono_get_array_new_va_icall (rank);
5150
5151         cfg->flags |= MONO_CFG_HAS_VARARGS;
5152
5153         /* mono_array_new_va () needs a vararg calling convention */
5154         cfg->exception_message = g_strdup ("array-new");
5155         cfg->disable_llvm = TRUE;
5156
5157         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5158         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5159 }
5160
5161 /*
5162  * handle_constrained_gsharedvt_call:
5163  *
5164  *   Handle constrained calls where the receiver is a gsharedvt type.
5165  * Return the instruction representing the call. Set the cfg exception on failure.
5166  */
5167 static MonoInst*
5168 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5169                                                                    gboolean *ref_emit_widen)
5170 {
5171         MonoInst *ins = NULL;
5172         gboolean emit_widen = *ref_emit_widen;
5173
5174         /*
5175          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5176          * 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
5177          * pack the arguments into an array, and do the rest of the work in in an icall.
5178          */
5179         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5180                 (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)) &&
5181                 (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]))))) {
5182                 MonoInst *args [16];
5183
5184                 /*
5185                  * This case handles calls to
5186                  * - object:ToString()/Equals()/GetHashCode(),
5187                  * - System.IComparable<T>:CompareTo()
5188                  * - System.IEquatable<T>:Equals ()
5189                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5190                  */
5191
5192                 args [0] = sp [0];
5193                 if (mono_method_check_context_used (cmethod))
5194                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5195                 else
5196                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5197                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5198
5199                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5200                 if (fsig->hasthis && fsig->param_count) {
5201                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5202                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5203                         ins->dreg = alloc_preg (cfg);
5204                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5205                         MONO_ADD_INS (cfg->cbb, ins);
5206                         args [4] = ins;
5207
5208                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5209                                 int addr_reg, deref_arg_reg;
5210
5211                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5212                                 deref_arg_reg = alloc_preg (cfg);
5213                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5214                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5215
5216                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5217                                 addr_reg = ins->dreg;
5218                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5219                         } else {
5220                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5221                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5222                         }
5223                 } else {
5224                         EMIT_NEW_ICONST (cfg, args [3], 0);
5225                         EMIT_NEW_ICONST (cfg, args [4], 0);
5226                 }
5227                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5228                 emit_widen = FALSE;
5229
5230                 if (mini_is_gsharedvt_type (fsig->ret)) {
5231                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5232                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5233                         MonoInst *add;
5234
5235                         /* Unbox */
5236                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5237                         MONO_ADD_INS (cfg->cbb, add);
5238                         /* Load value */
5239                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5240                         MONO_ADD_INS (cfg->cbb, ins);
5241                         /* ins represents the call result */
5242                 }
5243         } else {
5244                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5245         }
5246
5247         *ref_emit_widen = emit_widen;
5248
5249         return ins;
5250
5251  exception_exit:
5252         return NULL;
5253 }
5254
5255 static void
5256 mono_emit_load_got_addr (MonoCompile *cfg)
5257 {
5258         MonoInst *getaddr, *dummy_use;
5259
5260         if (!cfg->got_var || cfg->got_var_allocated)
5261                 return;
5262
5263         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5264         getaddr->cil_code = cfg->header->code;
5265         getaddr->dreg = cfg->got_var->dreg;
5266
5267         /* Add it to the start of the first bblock */
5268         if (cfg->bb_entry->code) {
5269                 getaddr->next = cfg->bb_entry->code;
5270                 cfg->bb_entry->code = getaddr;
5271         }
5272         else
5273                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5274
5275         cfg->got_var_allocated = TRUE;
5276
5277         /*
5278          * Add a dummy use to keep the got_var alive, since real uses might
5279          * only be generated by the back ends.
5280          * Add it to end_bblock, so the variable's lifetime covers the whole
5281          * method.
5282          * It would be better to make the usage of the got var explicit in all
5283          * cases when the backend needs it (i.e. calls, throw etc.), so this
5284          * wouldn't be needed.
5285          */
5286         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5287         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5288 }
5289
5290 static int inline_limit;
5291 static gboolean inline_limit_inited;
5292
5293 static gboolean
5294 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5295 {
5296         MonoMethodHeaderSummary header;
5297         MonoVTable *vtable;
5298 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5299         MonoMethodSignature *sig = mono_method_signature (method);
5300         int i;
5301 #endif
5302
5303         if (cfg->disable_inline)
5304                 return FALSE;
5305         if (cfg->gshared)
5306                 return FALSE;
5307
5308         if (cfg->inline_depth > 10)
5309                 return FALSE;
5310
5311         if (!mono_method_get_header_summary (method, &header))
5312                 return FALSE;
5313
5314         /*runtime, icall and pinvoke are checked by summary call*/
5315         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5316             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5317             (mono_class_is_marshalbyref (method->klass)) ||
5318             header.has_clauses)
5319                 return FALSE;
5320
5321         /* also consider num_locals? */
5322         /* Do the size check early to avoid creating vtables */
5323         if (!inline_limit_inited) {
5324                 if (g_getenv ("MONO_INLINELIMIT"))
5325                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5326                 else
5327                         inline_limit = INLINE_LENGTH_LIMIT;
5328                 inline_limit_inited = TRUE;
5329         }
5330         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5331                 return FALSE;
5332
5333         /*
5334          * if we can initialize the class of the method right away, we do,
5335          * otherwise we don't allow inlining if the class needs initialization,
5336          * since it would mean inserting a call to mono_runtime_class_init()
5337          * inside the inlined code
5338          */
5339         if (!(cfg->opt & MONO_OPT_SHARED)) {
5340                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5341                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5342                         vtable = mono_class_vtable (cfg->domain, method->klass);
5343                         if (!vtable)
5344                                 return FALSE;
5345                         if (!cfg->compile_aot) {
5346                                 MonoError error;
5347                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5348                                         mono_error_cleanup (&error);
5349                                         return FALSE;
5350                                 }
5351                         }
5352                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5353                         if (cfg->run_cctors && method->klass->has_cctor) {
5354                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5355                                 if (!method->klass->runtime_info)
5356                                         /* No vtable created yet */
5357                                         return FALSE;
5358                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5359                                 if (!vtable)
5360                                         return FALSE;
5361                                 /* This makes so that inline cannot trigger */
5362                                 /* .cctors: too many apps depend on them */
5363                                 /* running with a specific order... */
5364                                 if (! vtable->initialized)
5365                                         return FALSE;
5366                                 MonoError error;
5367                                 if (!mono_runtime_class_init_full (vtable, &error)) {
5368                                         mono_error_cleanup (&error);
5369                                         return FALSE;
5370                                 }
5371                         }
5372                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5373                         if (!method->klass->runtime_info)
5374                                 /* No vtable created yet */
5375                                 return FALSE;
5376                         vtable = mono_class_vtable (cfg->domain, method->klass);
5377                         if (!vtable)
5378                                 return FALSE;
5379                         if (!vtable->initialized)
5380                                 return FALSE;
5381                 }
5382         } else {
5383                 /*
5384                  * If we're compiling for shared code
5385                  * the cctor will need to be run at aot method load time, for example,
5386                  * or at the end of the compilation of the inlining method.
5387                  */
5388                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5389                         return FALSE;
5390         }
5391
5392 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5393         if (mono_arch_is_soft_float ()) {
5394                 /* FIXME: */
5395                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5396                         return FALSE;
5397                 for (i = 0; i < sig->param_count; ++i)
5398                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5399                                 return FALSE;
5400         }
5401 #endif
5402
5403         if (g_list_find (cfg->dont_inline, method))
5404                 return FALSE;
5405
5406         return TRUE;
5407 }
5408
5409 static gboolean
5410 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5411 {
5412         if (!cfg->compile_aot) {
5413                 g_assert (vtable);
5414                 if (vtable->initialized)
5415                         return FALSE;
5416         }
5417
5418         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5419                 if (cfg->method == method)
5420                         return FALSE;
5421         }
5422
5423         if (!mono_class_needs_cctor_run (klass, method))
5424                 return FALSE;
5425
5426         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5427                 /* The initialization is already done before the method is called */
5428                 return FALSE;
5429
5430         return TRUE;
5431 }
5432
5433 static MonoInst*
5434 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5435 {
5436         MonoInst *ins;
5437         guint32 size;
5438         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5439         int context_used;
5440
5441         if (mini_is_gsharedvt_variable_klass (klass)) {
5442                 size = -1;
5443         } else {
5444                 mono_class_init (klass);
5445                 size = mono_class_array_element_size (klass);
5446         }
5447
5448         mult_reg = alloc_preg (cfg);
5449         array_reg = arr->dreg;
5450         index_reg = index->dreg;
5451
5452 #if SIZEOF_REGISTER == 8
5453         /* The array reg is 64 bits but the index reg is only 32 */
5454         if (COMPILE_LLVM (cfg)) {
5455                 /* Not needed */
5456                 index2_reg = index_reg;
5457         } else {
5458                 index2_reg = alloc_preg (cfg);
5459                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5460         }
5461 #else
5462         if (index->type == STACK_I8) {
5463                 index2_reg = alloc_preg (cfg);
5464                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5465         } else {
5466                 index2_reg = index_reg;
5467         }
5468 #endif
5469
5470         if (bcheck)
5471                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5472
5473 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5474         if (size == 1 || size == 2 || size == 4 || size == 8) {
5475                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5476
5477                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5478                 ins->klass = mono_class_get_element_class (klass);
5479                 ins->type = STACK_MP;
5480
5481                 return ins;
5482         }
5483 #endif
5484
5485         add_reg = alloc_ireg_mp (cfg);
5486
5487         if (size == -1) {
5488                 MonoInst *rgctx_ins;
5489
5490                 /* gsharedvt */
5491                 g_assert (cfg->gshared);
5492                 context_used = mini_class_check_context_used (cfg, klass);
5493                 g_assert (context_used);
5494                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5495                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5496         } else {
5497                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5498         }
5499         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5500         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5501         ins->klass = mono_class_get_element_class (klass);
5502         ins->type = STACK_MP;
5503         MONO_ADD_INS (cfg->cbb, ins);
5504
5505         return ins;
5506 }
5507
5508 static MonoInst*
5509 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5510 {
5511         int bounds_reg = alloc_preg (cfg);
5512         int add_reg = alloc_ireg_mp (cfg);
5513         int mult_reg = alloc_preg (cfg);
5514         int mult2_reg = alloc_preg (cfg);
5515         int low1_reg = alloc_preg (cfg);
5516         int low2_reg = alloc_preg (cfg);
5517         int high1_reg = alloc_preg (cfg);
5518         int high2_reg = alloc_preg (cfg);
5519         int realidx1_reg = alloc_preg (cfg);
5520         int realidx2_reg = alloc_preg (cfg);
5521         int sum_reg = alloc_preg (cfg);
5522         int index1, index2, tmpreg;
5523         MonoInst *ins;
5524         guint32 size;
5525
5526         mono_class_init (klass);
5527         size = mono_class_array_element_size (klass);
5528
5529         index1 = index_ins1->dreg;
5530         index2 = index_ins2->dreg;
5531
5532 #if SIZEOF_REGISTER == 8
5533         /* The array reg is 64 bits but the index reg is only 32 */
5534         if (COMPILE_LLVM (cfg)) {
5535                 /* Not needed */
5536         } else {
5537                 tmpreg = alloc_preg (cfg);
5538                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5539                 index1 = tmpreg;
5540                 tmpreg = alloc_preg (cfg);
5541                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5542                 index2 = tmpreg;
5543         }
5544 #else
5545         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5546         tmpreg = -1;
5547 #endif
5548
5549         /* range checking */
5550         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5551                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5552
5553         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5554                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5555         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5556         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5557                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5558         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5559         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5560
5561         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5562                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5563         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5564         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5565                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5566         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5567         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5568
5569         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5570         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5571         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5572         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5573         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5574
5575         ins->type = STACK_MP;
5576         ins->klass = klass;
5577         MONO_ADD_INS (cfg->cbb, ins);
5578
5579         return ins;
5580 }
5581
5582 static MonoInst*
5583 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5584 {
5585         int rank;
5586         MonoInst *addr;
5587         MonoMethod *addr_method;
5588         int element_size;
5589         MonoClass *eclass = cmethod->klass->element_class;
5590
5591         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5592
5593         if (rank == 1)
5594                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5595
5596         /* emit_ldelema_2 depends on OP_LMUL */
5597         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5598                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5599         }
5600
5601         if (mini_is_gsharedvt_variable_klass (eclass))
5602                 element_size = 0;
5603         else
5604                 element_size = mono_class_array_element_size (eclass);
5605         addr_method = mono_marshal_get_array_address (rank, element_size);
5606         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5607
5608         return addr;
5609 }
5610
5611 static MonoBreakPolicy
5612 always_insert_breakpoint (MonoMethod *method)
5613 {
5614         return MONO_BREAK_POLICY_ALWAYS;
5615 }
5616
5617 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5618
5619 /**
5620  * mono_set_break_policy:
5621  * policy_callback: the new callback function
5622  *
5623  * Allow embedders to decide wherther to actually obey breakpoint instructions
5624  * (both break IL instructions and Debugger.Break () method calls), for example
5625  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5626  * untrusted or semi-trusted code.
5627  *
5628  * @policy_callback will be called every time a break point instruction needs to
5629  * be inserted with the method argument being the method that calls Debugger.Break()
5630  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5631  * if it wants the breakpoint to not be effective in the given method.
5632  * #MONO_BREAK_POLICY_ALWAYS is the default.
5633  */
5634 void
5635 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5636 {
5637         if (policy_callback)
5638                 break_policy_func = policy_callback;
5639         else
5640                 break_policy_func = always_insert_breakpoint;
5641 }
5642
5643 static gboolean
5644 should_insert_brekpoint (MonoMethod *method) {
5645         switch (break_policy_func (method)) {
5646         case MONO_BREAK_POLICY_ALWAYS:
5647                 return TRUE;
5648         case MONO_BREAK_POLICY_NEVER:
5649                 return FALSE;
5650         case MONO_BREAK_POLICY_ON_DBG:
5651                 g_warning ("mdb no longer supported");
5652                 return FALSE;
5653         default:
5654                 g_warning ("Incorrect value returned from break policy callback");
5655                 return FALSE;
5656         }
5657 }
5658
5659 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5660 static MonoInst*
5661 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5662 {
5663         MonoInst *addr, *store, *load;
5664         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5665
5666         /* the bounds check is already done by the callers */
5667         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5668         if (is_set) {
5669                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5670                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5671                 if (mini_type_is_reference (fsig->params [2]))
5672                         emit_write_barrier (cfg, addr, load);
5673         } else {
5674                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5675                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5676         }
5677         return store;
5678 }
5679
5680
5681 static gboolean
5682 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5683 {
5684         return mini_type_is_reference (&klass->byval_arg);
5685 }
5686
5687 static MonoInst*
5688 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5689 {
5690         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5691                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5692                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5693                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5694                 MonoInst *iargs [3];
5695
5696                 if (!helper->slot)
5697                         mono_class_setup_vtable (obj_array);
5698                 g_assert (helper->slot);
5699
5700                 if (sp [0]->type != STACK_OBJ)
5701                         return NULL;
5702                 if (sp [2]->type != STACK_OBJ)
5703                         return NULL;
5704
5705                 iargs [2] = sp [2];
5706                 iargs [1] = sp [1];
5707                 iargs [0] = sp [0];
5708
5709                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5710         } else {
5711                 MonoInst *ins;
5712
5713                 if (mini_is_gsharedvt_variable_klass (klass)) {
5714                         MonoInst *addr;
5715
5716                         // FIXME-VT: OP_ICONST optimization
5717                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5718                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5719                         ins->opcode = OP_STOREV_MEMBASE;
5720                 } else if (sp [1]->opcode == OP_ICONST) {
5721                         int array_reg = sp [0]->dreg;
5722                         int index_reg = sp [1]->dreg;
5723                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5724
5725                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5726                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5727
5728                         if (safety_checks)
5729                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5730                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5731                 } else {
5732                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5733                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5734                         if (generic_class_is_reference_type (cfg, klass))
5735                                 emit_write_barrier (cfg, addr, sp [2]);
5736                 }
5737                 return ins;
5738         }
5739 }
5740
5741 static MonoInst*
5742 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5743 {
5744         MonoClass *eklass;
5745
5746         if (is_set)
5747                 eklass = mono_class_from_mono_type (fsig->params [2]);
5748         else
5749                 eklass = mono_class_from_mono_type (fsig->ret);
5750
5751         if (is_set) {
5752                 return emit_array_store (cfg, eklass, args, FALSE);
5753         } else {
5754                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5755                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5756                 return ins;
5757         }
5758 }
5759
5760 static gboolean
5761 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5762 {
5763         uint32_t align;
5764         int param_size, return_size;
5765
5766         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5767         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5768
5769         if (cfg->verbose_level > 3)
5770                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5771
5772         //Don't allow mixing reference types with value types
5773         if (param_klass->valuetype != return_klass->valuetype) {
5774                 if (cfg->verbose_level > 3)
5775                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5776                 return FALSE;
5777         }
5778
5779         if (!param_klass->valuetype) {
5780                 if (cfg->verbose_level > 3)
5781                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5782                 return TRUE;
5783         }
5784
5785         //That are blitable
5786         if (param_klass->has_references || return_klass->has_references)
5787                 return FALSE;
5788
5789         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5790         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5791                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5792                         if (cfg->verbose_level > 3)
5793                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5794                 return FALSE;
5795         }
5796
5797         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5798                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5799                 if (cfg->verbose_level > 3)
5800                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5801                 return FALSE;
5802         }
5803
5804         param_size = mono_class_value_size (param_klass, &align);
5805         return_size = mono_class_value_size (return_klass, &align);
5806
5807         //We can do it if sizes match
5808         if (param_size == return_size) {
5809                 if (cfg->verbose_level > 3)
5810                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5811                 return TRUE;
5812         }
5813
5814         //No simple way to handle struct if sizes don't match
5815         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5816                 if (cfg->verbose_level > 3)
5817                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5818                 return FALSE;
5819         }
5820
5821         /*
5822          * Same reg size category.
5823          * A quick note on why we don't require widening here.
5824          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5825          *
5826          * Since the source value comes from a function argument, the JIT will already have
5827          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5828          */
5829         if (param_size <= 4 && return_size <= 4) {
5830                 if (cfg->verbose_level > 3)
5831                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5832                 return TRUE;
5833         }
5834
5835         return FALSE;
5836 }
5837
5838 static MonoInst*
5839 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5840 {
5841         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5842         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5843
5844         if (mini_is_gsharedvt_variable_type (fsig->ret))
5845                 return NULL;
5846
5847         //Valuetypes that are semantically equivalent or numbers than can be widened to
5848         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5849                 return args [0];
5850
5851         //Arrays of valuetypes that are semantically equivalent
5852         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5853                 return args [0];
5854
5855         return NULL;
5856 }
5857
5858 static MonoInst*
5859 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5860 {
5861 #ifdef MONO_ARCH_SIMD_INTRINSICS
5862         MonoInst *ins = NULL;
5863
5864         if (cfg->opt & MONO_OPT_SIMD) {
5865                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5866                 if (ins)
5867                         return ins;
5868         }
5869 #endif
5870
5871         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5872 }
5873
5874 static MonoInst*
5875 emit_memory_barrier (MonoCompile *cfg, int kind)
5876 {
5877         MonoInst *ins = NULL;
5878         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5879         MONO_ADD_INS (cfg->cbb, ins);
5880         ins->backend.memory_barrier_kind = kind;
5881
5882         return ins;
5883 }
5884
5885 static MonoInst*
5886 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5887 {
5888         MonoInst *ins = NULL;
5889         int opcode = 0;
5890
5891         /* The LLVM backend supports these intrinsics */
5892         if (cmethod->klass == mono_defaults.math_class) {
5893                 if (strcmp (cmethod->name, "Sin") == 0) {
5894                         opcode = OP_SIN;
5895                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5896                         opcode = OP_COS;
5897                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5898                         opcode = OP_SQRT;
5899                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5900                         opcode = OP_ABS;
5901                 }
5902
5903                 if (opcode && fsig->param_count == 1) {
5904                         MONO_INST_NEW (cfg, ins, opcode);
5905                         ins->type = STACK_R8;
5906                         ins->dreg = mono_alloc_freg (cfg);
5907                         ins->sreg1 = args [0]->dreg;
5908                         MONO_ADD_INS (cfg->cbb, ins);
5909                 }
5910
5911                 opcode = 0;
5912                 if (cfg->opt & MONO_OPT_CMOV) {
5913                         if (strcmp (cmethod->name, "Min") == 0) {
5914                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5915                                         opcode = OP_IMIN;
5916                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5917                                         opcode = OP_IMIN_UN;
5918                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5919                                         opcode = OP_LMIN;
5920                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5921                                         opcode = OP_LMIN_UN;
5922                         } else if (strcmp (cmethod->name, "Max") == 0) {
5923                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5924                                         opcode = OP_IMAX;
5925                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5926                                         opcode = OP_IMAX_UN;
5927                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5928                                         opcode = OP_LMAX;
5929                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5930                                         opcode = OP_LMAX_UN;
5931                         }
5932                 }
5933
5934                 if (opcode && fsig->param_count == 2) {
5935                         MONO_INST_NEW (cfg, ins, opcode);
5936                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5937                         ins->dreg = mono_alloc_ireg (cfg);
5938                         ins->sreg1 = args [0]->dreg;
5939                         ins->sreg2 = args [1]->dreg;
5940                         MONO_ADD_INS (cfg->cbb, ins);
5941                 }
5942         }
5943
5944         return ins;
5945 }
5946
5947 static MonoInst*
5948 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5949 {
5950         if (cmethod->klass == mono_defaults.array_class) {
5951                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5952                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5953                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5954                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5955                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5956                         return emit_array_unsafe_mov (cfg, fsig, args);
5957         }
5958
5959         return NULL;
5960 }
5961
5962 static MonoInst*
5963 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5964 {
5965         MonoInst *ins = NULL;
5966
5967          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5968
5969         if (cmethod->klass == mono_defaults.string_class) {
5970                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5971                         int dreg = alloc_ireg (cfg);
5972                         int index_reg = alloc_preg (cfg);
5973                         int add_reg = alloc_preg (cfg);
5974
5975 #if SIZEOF_REGISTER == 8
5976                         if (COMPILE_LLVM (cfg)) {
5977                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5978                         } else {
5979                                 /* The array reg is 64 bits but the index reg is only 32 */
5980                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5981                         }
5982 #else
5983                         index_reg = args [1]->dreg;
5984 #endif
5985                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5986
5987 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5988                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5989                         add_reg = ins->dreg;
5990                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5991                                                                    add_reg, 0);
5992 #else
5993                         int mult_reg = alloc_preg (cfg);
5994                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5995                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5996                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5997                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5998 #endif
5999                         type_from_op (cfg, ins, NULL, NULL);
6000                         return ins;
6001                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6002                         int dreg = alloc_ireg (cfg);
6003                         /* Decompose later to allow more optimizations */
6004                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
6005                         ins->type = STACK_I4;
6006                         ins->flags |= MONO_INST_FAULT;
6007                         cfg->cbb->has_array_access = TRUE;
6008                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6009
6010                         return ins;
6011                 } else
6012                         return NULL;
6013         } else if (cmethod->klass == mono_defaults.object_class) {
6014                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6015                         int dreg = alloc_ireg_ref (cfg);
6016                         int vt_reg = alloc_preg (cfg);
6017                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6018                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6019                         type_from_op (cfg, ins, NULL, NULL);
6020
6021                         return ins;
6022                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6023                         int dreg = alloc_ireg (cfg);
6024                         int t1 = alloc_ireg (cfg);
6025
6026                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6027                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6028                         ins->type = STACK_I4;
6029
6030                         return ins;
6031                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6032                         MONO_INST_NEW (cfg, ins, OP_NOP);
6033                         MONO_ADD_INS (cfg->cbb, ins);
6034                         return ins;
6035                 } else
6036                         return NULL;
6037         } else if (cmethod->klass == mono_defaults.array_class) {
6038                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6039                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6040                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6041                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6042
6043 #ifndef MONO_BIG_ARRAYS
6044                 /*
6045                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6046                  * Array methods.
6047                  */
6048                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6049                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6050                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6051                         int dreg = alloc_ireg (cfg);
6052                         int bounds_reg = alloc_ireg_mp (cfg);
6053                         MonoBasicBlock *end_bb, *szarray_bb;
6054                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6055
6056                         NEW_BBLOCK (cfg, end_bb);
6057                         NEW_BBLOCK (cfg, szarray_bb);
6058
6059                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6060                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6061                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6062                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6063                         /* Non-szarray case */
6064                         if (get_length)
6065                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6066                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6067                         else
6068                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6069                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6070                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6071                         MONO_START_BB (cfg, szarray_bb);
6072                         /* Szarray case */
6073                         if (get_length)
6074                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6075                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6076                         else
6077                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6078                         MONO_START_BB (cfg, end_bb);
6079
6080                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6081                         ins->type = STACK_I4;
6082
6083                         return ins;
6084                 }
6085 #endif
6086
6087                 if (cmethod->name [0] != 'g')
6088                         return NULL;
6089
6090                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6091                         int dreg = alloc_ireg (cfg);
6092                         int vtable_reg = alloc_preg (cfg);
6093                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6094                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6095                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6096                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6097                         type_from_op (cfg, ins, NULL, NULL);
6098
6099                         return ins;
6100                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6101                         int dreg = alloc_ireg (cfg);
6102
6103                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6104                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6105                         type_from_op (cfg, ins, NULL, NULL);
6106
6107                         return ins;
6108                 } else
6109                         return NULL;
6110         } else if (cmethod->klass == runtime_helpers_class) {
6111                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6112                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6113                         return ins;
6114                 } else
6115                         return NULL;
6116         } else if (cmethod->klass == mono_defaults.monitor_class) {
6117                 gboolean is_enter = FALSE;
6118
6119                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6120                         is_enter = TRUE;
6121
6122                 if (is_enter) {
6123                         /*
6124                          * To make async stack traces work, icalls which can block should have a wrapper.
6125                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6126                          */
6127                         MonoBasicBlock *end_bb;
6128
6129                         NEW_BBLOCK (cfg, end_bb);
6130
6131                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter_fast, args);
6132                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6133                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6134                         ins = mono_emit_jit_icall (cfg, (gpointer)mono_monitor_enter, args);
6135                         MONO_START_BB (cfg, end_bb);
6136                         return ins;
6137                 }
6138         } else if (cmethod->klass == mono_defaults.thread_class) {
6139                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6140                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6141                         MONO_ADD_INS (cfg->cbb, ins);
6142                         return ins;
6143                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6144                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6145                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6146                         guint32 opcode = 0;
6147                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6148
6149                         if (fsig->params [0]->type == MONO_TYPE_I1)
6150                                 opcode = OP_LOADI1_MEMBASE;
6151                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6152                                 opcode = OP_LOADU1_MEMBASE;
6153                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6154                                 opcode = OP_LOADI2_MEMBASE;
6155                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6156                                 opcode = OP_LOADU2_MEMBASE;
6157                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6158                                 opcode = OP_LOADI4_MEMBASE;
6159                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6160                                 opcode = OP_LOADU4_MEMBASE;
6161                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6162                                 opcode = OP_LOADI8_MEMBASE;
6163                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6164                                 opcode = OP_LOADR4_MEMBASE;
6165                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6166                                 opcode = OP_LOADR8_MEMBASE;
6167                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6168                                 opcode = OP_LOAD_MEMBASE;
6169
6170                         if (opcode) {
6171                                 MONO_INST_NEW (cfg, ins, opcode);
6172                                 ins->inst_basereg = args [0]->dreg;
6173                                 ins->inst_offset = 0;
6174                                 MONO_ADD_INS (cfg->cbb, ins);
6175
6176                                 switch (fsig->params [0]->type) {
6177                                 case MONO_TYPE_I1:
6178                                 case MONO_TYPE_U1:
6179                                 case MONO_TYPE_I2:
6180                                 case MONO_TYPE_U2:
6181                                 case MONO_TYPE_I4:
6182                                 case MONO_TYPE_U4:
6183                                         ins->dreg = mono_alloc_ireg (cfg);
6184                                         ins->type = STACK_I4;
6185                                         break;
6186                                 case MONO_TYPE_I8:
6187                                 case MONO_TYPE_U8:
6188                                         ins->dreg = mono_alloc_lreg (cfg);
6189                                         ins->type = STACK_I8;
6190                                         break;
6191                                 case MONO_TYPE_I:
6192                                 case MONO_TYPE_U:
6193                                         ins->dreg = mono_alloc_ireg (cfg);
6194 #if SIZEOF_REGISTER == 8
6195                                         ins->type = STACK_I8;
6196 #else
6197                                         ins->type = STACK_I4;
6198 #endif
6199                                         break;
6200                                 case MONO_TYPE_R4:
6201                                 case MONO_TYPE_R8:
6202                                         ins->dreg = mono_alloc_freg (cfg);
6203                                         ins->type = STACK_R8;
6204                                         break;
6205                                 default:
6206                                         g_assert (mini_type_is_reference (fsig->params [0]));
6207                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6208                                         ins->type = STACK_OBJ;
6209                                         break;
6210                                 }
6211
6212                                 if (opcode == OP_LOADI8_MEMBASE)
6213                                         ins = mono_decompose_opcode (cfg, ins);
6214
6215                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6216
6217                                 return ins;
6218                         }
6219                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6220                         guint32 opcode = 0;
6221                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6222
6223                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6224                                 opcode = OP_STOREI1_MEMBASE_REG;
6225                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6226                                 opcode = OP_STOREI2_MEMBASE_REG;
6227                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6228                                 opcode = OP_STOREI4_MEMBASE_REG;
6229                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6230                                 opcode = OP_STOREI8_MEMBASE_REG;
6231                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6232                                 opcode = OP_STORER4_MEMBASE_REG;
6233                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6234                                 opcode = OP_STORER8_MEMBASE_REG;
6235                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6236                                 opcode = OP_STORE_MEMBASE_REG;
6237
6238                         if (opcode) {
6239                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6240
6241                                 MONO_INST_NEW (cfg, ins, opcode);
6242                                 ins->sreg1 = args [1]->dreg;
6243                                 ins->inst_destbasereg = args [0]->dreg;
6244                                 ins->inst_offset = 0;
6245                                 MONO_ADD_INS (cfg->cbb, ins);
6246
6247                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6248                                         ins = mono_decompose_opcode (cfg, ins);
6249
6250                                 return ins;
6251                         }
6252                 }
6253         } else if (cmethod->klass->image == mono_defaults.corlib &&
6254                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6255                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6256                 ins = NULL;
6257
6258 #if SIZEOF_REGISTER == 8
6259                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6260                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6261                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6262                                 ins->dreg = mono_alloc_preg (cfg);
6263                                 ins->sreg1 = args [0]->dreg;
6264                                 ins->type = STACK_I8;
6265                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6266                                 MONO_ADD_INS (cfg->cbb, ins);
6267                         } else {
6268                                 MonoInst *load_ins;
6269
6270                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6271
6272                                 /* 64 bit reads are already atomic */
6273                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6274                                 load_ins->dreg = mono_alloc_preg (cfg);
6275                                 load_ins->inst_basereg = args [0]->dreg;
6276                                 load_ins->inst_offset = 0;
6277                                 load_ins->type = STACK_I8;
6278                                 MONO_ADD_INS (cfg->cbb, load_ins);
6279
6280                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6281
6282                                 ins = load_ins;
6283                         }
6284                 }
6285 #endif
6286
6287                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6288                         MonoInst *ins_iconst;
6289                         guint32 opcode = 0;
6290
6291                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6292                                 opcode = OP_ATOMIC_ADD_I4;
6293                                 cfg->has_atomic_add_i4 = TRUE;
6294                         }
6295 #if SIZEOF_REGISTER == 8
6296                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6297                                 opcode = OP_ATOMIC_ADD_I8;
6298 #endif
6299                         if (opcode) {
6300                                 if (!mono_arch_opcode_supported (opcode))
6301                                         return NULL;
6302                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6303                                 ins_iconst->inst_c0 = 1;
6304                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6305                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6306
6307                                 MONO_INST_NEW (cfg, ins, opcode);
6308                                 ins->dreg = mono_alloc_ireg (cfg);
6309                                 ins->inst_basereg = args [0]->dreg;
6310                                 ins->inst_offset = 0;
6311                                 ins->sreg2 = ins_iconst->dreg;
6312                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6313                                 MONO_ADD_INS (cfg->cbb, ins);
6314                         }
6315                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6316                         MonoInst *ins_iconst;
6317                         guint32 opcode = 0;
6318
6319                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6320                                 opcode = OP_ATOMIC_ADD_I4;
6321                                 cfg->has_atomic_add_i4 = TRUE;
6322                         }
6323 #if SIZEOF_REGISTER == 8
6324                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6325                                 opcode = OP_ATOMIC_ADD_I8;
6326 #endif
6327                         if (opcode) {
6328                                 if (!mono_arch_opcode_supported (opcode))
6329                                         return NULL;
6330                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6331                                 ins_iconst->inst_c0 = -1;
6332                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6333                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6334
6335                                 MONO_INST_NEW (cfg, ins, opcode);
6336                                 ins->dreg = mono_alloc_ireg (cfg);
6337                                 ins->inst_basereg = args [0]->dreg;
6338                                 ins->inst_offset = 0;
6339                                 ins->sreg2 = ins_iconst->dreg;
6340                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6341                                 MONO_ADD_INS (cfg->cbb, ins);
6342                         }
6343                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6344                         guint32 opcode = 0;
6345
6346                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6347                                 opcode = OP_ATOMIC_ADD_I4;
6348                                 cfg->has_atomic_add_i4 = TRUE;
6349                         }
6350 #if SIZEOF_REGISTER == 8
6351                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6352                                 opcode = OP_ATOMIC_ADD_I8;
6353 #endif
6354                         if (opcode) {
6355                                 if (!mono_arch_opcode_supported (opcode))
6356                                         return NULL;
6357                                 MONO_INST_NEW (cfg, ins, opcode);
6358                                 ins->dreg = mono_alloc_ireg (cfg);
6359                                 ins->inst_basereg = args [0]->dreg;
6360                                 ins->inst_offset = 0;
6361                                 ins->sreg2 = args [1]->dreg;
6362                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6363                                 MONO_ADD_INS (cfg->cbb, ins);
6364                         }
6365                 }
6366                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6367                         MonoInst *f2i = NULL, *i2f;
6368                         guint32 opcode, f2i_opcode, i2f_opcode;
6369                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6370                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6371
6372                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6373                             fsig->params [0]->type == MONO_TYPE_R4) {
6374                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6375                                 f2i_opcode = OP_MOVE_F_TO_I4;
6376                                 i2f_opcode = OP_MOVE_I4_TO_F;
6377                                 cfg->has_atomic_exchange_i4 = TRUE;
6378                         }
6379 #if SIZEOF_REGISTER == 8
6380                         else if (is_ref ||
6381                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6382                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6383                                  fsig->params [0]->type == MONO_TYPE_I) {
6384                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6385                                 f2i_opcode = OP_MOVE_F_TO_I8;
6386                                 i2f_opcode = OP_MOVE_I8_TO_F;
6387                         }
6388 #else
6389                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6390                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6391                                 cfg->has_atomic_exchange_i4 = TRUE;
6392                         }
6393 #endif
6394                         else
6395                                 return NULL;
6396
6397                         if (!mono_arch_opcode_supported (opcode))
6398                                 return NULL;
6399
6400                         if (is_float) {
6401                                 /* TODO: Decompose these opcodes instead of bailing here. */
6402                                 if (COMPILE_SOFT_FLOAT (cfg))
6403                                         return NULL;
6404
6405                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6406                                 f2i->dreg = mono_alloc_ireg (cfg);
6407                                 f2i->sreg1 = args [1]->dreg;
6408                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6409                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6410                                 MONO_ADD_INS (cfg->cbb, f2i);
6411                         }
6412
6413                         MONO_INST_NEW (cfg, ins, opcode);
6414                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6415                         ins->inst_basereg = args [0]->dreg;
6416                         ins->inst_offset = 0;
6417                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6418                         MONO_ADD_INS (cfg->cbb, ins);
6419
6420                         switch (fsig->params [0]->type) {
6421                         case MONO_TYPE_I4:
6422                                 ins->type = STACK_I4;
6423                                 break;
6424                         case MONO_TYPE_I8:
6425                                 ins->type = STACK_I8;
6426                                 break;
6427                         case MONO_TYPE_I:
6428 #if SIZEOF_REGISTER == 8
6429                                 ins->type = STACK_I8;
6430 #else
6431                                 ins->type = STACK_I4;
6432 #endif
6433                                 break;
6434                         case MONO_TYPE_R4:
6435                         case MONO_TYPE_R8:
6436                                 ins->type = STACK_R8;
6437                                 break;
6438                         default:
6439                                 g_assert (mini_type_is_reference (fsig->params [0]));
6440                                 ins->type = STACK_OBJ;
6441                                 break;
6442                         }
6443
6444                         if (is_float) {
6445                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6446                                 i2f->dreg = mono_alloc_freg (cfg);
6447                                 i2f->sreg1 = ins->dreg;
6448                                 i2f->type = STACK_R8;
6449                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6450                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6451                                 MONO_ADD_INS (cfg->cbb, i2f);
6452
6453                                 ins = i2f;
6454                         }
6455
6456                         if (cfg->gen_write_barriers && is_ref)
6457                                 emit_write_barrier (cfg, args [0], args [1]);
6458                 }
6459                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6460                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6461                         guint32 opcode, f2i_opcode, i2f_opcode;
6462                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6463                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6464
6465                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6466                             fsig->params [1]->type == MONO_TYPE_R4) {
6467                                 opcode = OP_ATOMIC_CAS_I4;
6468                                 f2i_opcode = OP_MOVE_F_TO_I4;
6469                                 i2f_opcode = OP_MOVE_I4_TO_F;
6470                                 cfg->has_atomic_cas_i4 = TRUE;
6471                         }
6472 #if SIZEOF_REGISTER == 8
6473                         else if (is_ref ||
6474                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6475                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6476                                  fsig->params [1]->type == MONO_TYPE_I) {
6477                                 opcode = OP_ATOMIC_CAS_I8;
6478                                 f2i_opcode = OP_MOVE_F_TO_I8;
6479                                 i2f_opcode = OP_MOVE_I8_TO_F;
6480                         }
6481 #else
6482                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6483                                 opcode = OP_ATOMIC_CAS_I4;
6484                                 cfg->has_atomic_cas_i4 = TRUE;
6485                         }
6486 #endif
6487                         else
6488                                 return NULL;
6489
6490                         if (!mono_arch_opcode_supported (opcode))
6491                                 return NULL;
6492
6493                         if (is_float) {
6494                                 /* TODO: Decompose these opcodes instead of bailing here. */
6495                                 if (COMPILE_SOFT_FLOAT (cfg))
6496                                         return NULL;
6497
6498                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6499                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6500                                 f2i_new->sreg1 = args [1]->dreg;
6501                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6502                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6503                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6504
6505                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6506                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6507                                 f2i_cmp->sreg1 = args [2]->dreg;
6508                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6509                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6510                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6511                         }
6512
6513                         MONO_INST_NEW (cfg, ins, opcode);
6514                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6515                         ins->sreg1 = args [0]->dreg;
6516                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6517                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6518                         MONO_ADD_INS (cfg->cbb, ins);
6519
6520                         switch (fsig->params [1]->type) {
6521                         case MONO_TYPE_I4:
6522                                 ins->type = STACK_I4;
6523                                 break;
6524                         case MONO_TYPE_I8:
6525                                 ins->type = STACK_I8;
6526                                 break;
6527                         case MONO_TYPE_I:
6528 #if SIZEOF_REGISTER == 8
6529                                 ins->type = STACK_I8;
6530 #else
6531                                 ins->type = STACK_I4;
6532 #endif
6533                                 break;
6534                         case MONO_TYPE_R4:
6535                                 ins->type = cfg->r4_stack_type;
6536                                 break;
6537                         case MONO_TYPE_R8:
6538                                 ins->type = STACK_R8;
6539                                 break;
6540                         default:
6541                                 g_assert (mini_type_is_reference (fsig->params [1]));
6542                                 ins->type = STACK_OBJ;
6543                                 break;
6544                         }
6545
6546                         if (is_float) {
6547                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6548                                 i2f->dreg = mono_alloc_freg (cfg);
6549                                 i2f->sreg1 = ins->dreg;
6550                                 i2f->type = STACK_R8;
6551                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6552                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6553                                 MONO_ADD_INS (cfg->cbb, i2f);
6554
6555                                 ins = i2f;
6556                         }
6557
6558                         if (cfg->gen_write_barriers && is_ref)
6559                                 emit_write_barrier (cfg, args [0], args [1]);
6560                 }
6561                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6562                          fsig->params [1]->type == MONO_TYPE_I4) {
6563                         MonoInst *cmp, *ceq;
6564
6565                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6566                                 return NULL;
6567
6568                         /* int32 r = CAS (location, value, comparand); */
6569                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6570                         ins->dreg = alloc_ireg (cfg);
6571                         ins->sreg1 = args [0]->dreg;
6572                         ins->sreg2 = args [1]->dreg;
6573                         ins->sreg3 = args [2]->dreg;
6574                         ins->type = STACK_I4;
6575                         MONO_ADD_INS (cfg->cbb, ins);
6576
6577                         /* bool result = r == comparand; */
6578                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6579                         cmp->sreg1 = ins->dreg;
6580                         cmp->sreg2 = args [2]->dreg;
6581                         cmp->type = STACK_I4;
6582                         MONO_ADD_INS (cfg->cbb, cmp);
6583
6584                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6585                         ceq->dreg = alloc_ireg (cfg);
6586                         ceq->type = STACK_I4;
6587                         MONO_ADD_INS (cfg->cbb, ceq);
6588
6589                         /* *success = result; */
6590                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6591
6592                         cfg->has_atomic_cas_i4 = TRUE;
6593                 }
6594                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6595                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6596
6597                 if (ins)
6598                         return ins;
6599         } else if (cmethod->klass->image == mono_defaults.corlib &&
6600                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6601                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6602                 ins = NULL;
6603
6604                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6605                         guint32 opcode = 0;
6606                         MonoType *t = fsig->params [0];
6607                         gboolean is_ref;
6608                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6609
6610                         g_assert (t->byref);
6611                         /* t is a byref type, so the reference check is more complicated */
6612                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6613                         if (t->type == MONO_TYPE_I1)
6614                                 opcode = OP_ATOMIC_LOAD_I1;
6615                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6616                                 opcode = OP_ATOMIC_LOAD_U1;
6617                         else if (t->type == MONO_TYPE_I2)
6618                                 opcode = OP_ATOMIC_LOAD_I2;
6619                         else if (t->type == MONO_TYPE_U2)
6620                                 opcode = OP_ATOMIC_LOAD_U2;
6621                         else if (t->type == MONO_TYPE_I4)
6622                                 opcode = OP_ATOMIC_LOAD_I4;
6623                         else if (t->type == MONO_TYPE_U4)
6624                                 opcode = OP_ATOMIC_LOAD_U4;
6625                         else if (t->type == MONO_TYPE_R4)
6626                                 opcode = OP_ATOMIC_LOAD_R4;
6627                         else if (t->type == MONO_TYPE_R8)
6628                                 opcode = OP_ATOMIC_LOAD_R8;
6629 #if SIZEOF_REGISTER == 8
6630                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6631                                 opcode = OP_ATOMIC_LOAD_I8;
6632                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6633                                 opcode = OP_ATOMIC_LOAD_U8;
6634 #else
6635                         else if (t->type == MONO_TYPE_I)
6636                                 opcode = OP_ATOMIC_LOAD_I4;
6637                         else if (is_ref || t->type == MONO_TYPE_U)
6638                                 opcode = OP_ATOMIC_LOAD_U4;
6639 #endif
6640
6641                         if (opcode) {
6642                                 if (!mono_arch_opcode_supported (opcode))
6643                                         return NULL;
6644
6645                                 MONO_INST_NEW (cfg, ins, opcode);
6646                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6647                                 ins->sreg1 = args [0]->dreg;
6648                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6649                                 MONO_ADD_INS (cfg->cbb, ins);
6650
6651                                 switch (t->type) {
6652                                 case MONO_TYPE_BOOLEAN:
6653                                 case MONO_TYPE_I1:
6654                                 case MONO_TYPE_U1:
6655                                 case MONO_TYPE_I2:
6656                                 case MONO_TYPE_U2:
6657                                 case MONO_TYPE_I4:
6658                                 case MONO_TYPE_U4:
6659                                         ins->type = STACK_I4;
6660                                         break;
6661                                 case MONO_TYPE_I8:
6662                                 case MONO_TYPE_U8:
6663                                         ins->type = STACK_I8;
6664                                         break;
6665                                 case MONO_TYPE_I:
6666                                 case MONO_TYPE_U:
6667 #if SIZEOF_REGISTER == 8
6668                                         ins->type = STACK_I8;
6669 #else
6670                                         ins->type = STACK_I4;
6671 #endif
6672                                         break;
6673                                 case MONO_TYPE_R4:
6674                                         ins->type = cfg->r4_stack_type;
6675                                         break;
6676                                 case MONO_TYPE_R8:
6677                                         ins->type = STACK_R8;
6678                                         break;
6679                                 default:
6680                                         g_assert (is_ref);
6681                                         ins->type = STACK_OBJ;
6682                                         break;
6683                                 }
6684                         }
6685                 }
6686
6687                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6688                         guint32 opcode = 0;
6689                         MonoType *t = fsig->params [0];
6690                         gboolean is_ref;
6691
6692                         g_assert (t->byref);
6693                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6694                         if (t->type == MONO_TYPE_I1)
6695                                 opcode = OP_ATOMIC_STORE_I1;
6696                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6697                                 opcode = OP_ATOMIC_STORE_U1;
6698                         else if (t->type == MONO_TYPE_I2)
6699                                 opcode = OP_ATOMIC_STORE_I2;
6700                         else if (t->type == MONO_TYPE_U2)
6701                                 opcode = OP_ATOMIC_STORE_U2;
6702                         else if (t->type == MONO_TYPE_I4)
6703                                 opcode = OP_ATOMIC_STORE_I4;
6704                         else if (t->type == MONO_TYPE_U4)
6705                                 opcode = OP_ATOMIC_STORE_U4;
6706                         else if (t->type == MONO_TYPE_R4)
6707                                 opcode = OP_ATOMIC_STORE_R4;
6708                         else if (t->type == MONO_TYPE_R8)
6709                                 opcode = OP_ATOMIC_STORE_R8;
6710 #if SIZEOF_REGISTER == 8
6711                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6712                                 opcode = OP_ATOMIC_STORE_I8;
6713                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6714                                 opcode = OP_ATOMIC_STORE_U8;
6715 #else
6716                         else if (t->type == MONO_TYPE_I)
6717                                 opcode = OP_ATOMIC_STORE_I4;
6718                         else if (is_ref || t->type == MONO_TYPE_U)
6719                                 opcode = OP_ATOMIC_STORE_U4;
6720 #endif
6721
6722                         if (opcode) {
6723                                 if (!mono_arch_opcode_supported (opcode))
6724                                         return NULL;
6725
6726                                 MONO_INST_NEW (cfg, ins, opcode);
6727                                 ins->dreg = args [0]->dreg;
6728                                 ins->sreg1 = args [1]->dreg;
6729                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6730                                 MONO_ADD_INS (cfg->cbb, ins);
6731
6732                                 if (cfg->gen_write_barriers && is_ref)
6733                                         emit_write_barrier (cfg, args [0], args [1]);
6734                         }
6735                 }
6736
6737                 if (ins)
6738                         return ins;
6739         } else if (cmethod->klass->image == mono_defaults.corlib &&
6740                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6741                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6742                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6743                         if (should_insert_brekpoint (cfg->method)) {
6744                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6745                         } else {
6746                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6747                                 MONO_ADD_INS (cfg->cbb, ins);
6748                         }
6749                         return ins;
6750                 }
6751         } else if (cmethod->klass->image == mono_defaults.corlib &&
6752                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6753                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6754                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6755 #ifdef TARGET_WIN32
6756                         EMIT_NEW_ICONST (cfg, ins, 1);
6757 #else
6758                         EMIT_NEW_ICONST (cfg, ins, 0);
6759 #endif
6760                 }
6761         } else if (cmethod->klass->image == mono_defaults.corlib &&
6762                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6763                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6764                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6765                         /* No stack walks are currently available, so implement this as an intrinsic */
6766                         MonoInst *assembly_ins;
6767
6768                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6769                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6770                         return ins;
6771                 }
6772         } else if (cmethod->klass->image == mono_defaults.corlib &&
6773                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6774                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6775                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6776                         /* No stack walks are currently available, so implement this as an intrinsic */
6777                         MonoInst *method_ins;
6778                         MonoMethod *declaring = cfg->method;
6779
6780                         /* This returns the declaring generic method */
6781                         if (declaring->is_inflated)
6782                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6783                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6784                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6785                         cfg->no_inline = TRUE;
6786                         if (cfg->method != cfg->current_method)
6787                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6788                         return ins;
6789                 }
6790         } else if (cmethod->klass == mono_defaults.math_class) {
6791                 /*
6792                  * There is general branchless code for Min/Max, but it does not work for
6793                  * all inputs:
6794                  * http://everything2.com/?node_id=1051618
6795                  */
6796         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6797                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6798                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6799                                 !strcmp (cmethod->klass->name, "Selector")) ||
6800                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6801                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6802                                 !strcmp (cmethod->klass->name, "Selector"))
6803                            ) {
6804                 if (cfg->backend->have_objc_get_selector &&
6805                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6806                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6807                     cfg->compile_aot && !cfg->llvm_only) {
6808                         MonoInst *pi;
6809                         MonoJumpInfoToken *ji;
6810                         char *s;
6811
6812                         // FIXME: llvmonly
6813
6814                         cfg->exception_message = g_strdup ("GetHandle");
6815                         cfg->disable_llvm = TRUE;
6816
6817                         if (args [0]->opcode == OP_GOT_ENTRY) {
6818                                 pi = (MonoInst *)args [0]->inst_p1;
6819                                 g_assert (pi->opcode == OP_PATCH_INFO);
6820                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6821                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6822                         } else {
6823                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6824                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6825                         }
6826
6827                         NULLIFY_INS (args [0]);
6828
6829                         s = mono_ldstr_utf8 (ji->image, mono_metadata_token_index (ji->token), &cfg->error);
6830                         return_val_if_nok (&cfg->error, NULL);
6831
6832                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6833                         ins->dreg = mono_alloc_ireg (cfg);
6834                         // FIXME: Leaks
6835                         ins->inst_p0 = s;
6836                         MONO_ADD_INS (cfg->cbb, ins);
6837                         return ins;
6838                 }
6839         }
6840
6841 #ifdef MONO_ARCH_SIMD_INTRINSICS
6842         if (cfg->opt & MONO_OPT_SIMD) {
6843                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6844                 if (ins)
6845                         return ins;
6846         }
6847 #endif
6848
6849         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6850         if (ins)
6851                 return ins;
6852
6853         if (COMPILE_LLVM (cfg)) {
6854                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6855                 if (ins)
6856                         return ins;
6857         }
6858
6859         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6860 }
6861
6862 /*
6863  * This entry point could be used later for arbitrary method
6864  * redirection.
6865  */
6866 inline static MonoInst*
6867 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6868                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6869 {
6870         if (method->klass == mono_defaults.string_class) {
6871                 /* managed string allocation support */
6872                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6873                         MonoInst *iargs [2];
6874                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6875                         MonoMethod *managed_alloc = NULL;
6876
6877                         g_assert (vtable); /*Should not fail since it System.String*/
6878 #ifndef MONO_CROSS_COMPILE
6879                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6880 #endif
6881                         if (!managed_alloc)
6882                                 return NULL;
6883                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6884                         iargs [1] = args [0];
6885                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6886                 }
6887         }
6888         return NULL;
6889 }
6890
6891 static void
6892 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6893 {
6894         MonoInst *store, *temp;
6895         int i;
6896
6897         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6898                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6899
6900                 /*
6901                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6902                  * would be different than the MonoInst's used to represent arguments, and
6903                  * the ldelema implementation can't deal with that.
6904                  * Solution: When ldelema is used on an inline argument, create a var for
6905                  * it, emit ldelema on that var, and emit the saving code below in
6906                  * inline_method () if needed.
6907                  */
6908                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6909                 cfg->args [i] = temp;
6910                 /* This uses cfg->args [i] which is set by the preceeding line */
6911                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6912                 store->cil_code = sp [0]->cil_code;
6913                 sp++;
6914         }
6915 }
6916
6917 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6918 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6919
6920 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6921 static gboolean
6922 check_inline_called_method_name_limit (MonoMethod *called_method)
6923 {
6924         int strncmp_result;
6925         static const char *limit = NULL;
6926
6927         if (limit == NULL) {
6928                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6929
6930                 if (limit_string != NULL)
6931                         limit = limit_string;
6932                 else
6933                         limit = "";
6934         }
6935
6936         if (limit [0] != '\0') {
6937                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6938
6939                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6940                 g_free (called_method_name);
6941
6942                 //return (strncmp_result <= 0);
6943                 return (strncmp_result == 0);
6944         } else {
6945                 return TRUE;
6946         }
6947 }
6948 #endif
6949
6950 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6951 static gboolean
6952 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6953 {
6954         int strncmp_result;
6955         static const char *limit = NULL;
6956
6957         if (limit == NULL) {
6958                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6959                 if (limit_string != NULL) {
6960                         limit = limit_string;
6961                 } else {
6962                         limit = "";
6963                 }
6964         }
6965
6966         if (limit [0] != '\0') {
6967                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6968
6969                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6970                 g_free (caller_method_name);
6971
6972                 //return (strncmp_result <= 0);
6973                 return (strncmp_result == 0);
6974         } else {
6975                 return TRUE;
6976         }
6977 }
6978 #endif
6979
6980 static void
6981 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6982 {
6983         static double r8_0 = 0.0;
6984         static float r4_0 = 0.0;
6985         MonoInst *ins;
6986         int t;
6987
6988         rtype = mini_get_underlying_type (rtype);
6989         t = rtype->type;
6990
6991         if (rtype->byref) {
6992                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6993         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6994                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6995         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6996                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6997         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6998                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6999                 ins->type = STACK_R4;
7000                 ins->inst_p0 = (void*)&r4_0;
7001                 ins->dreg = dreg;
7002                 MONO_ADD_INS (cfg->cbb, ins);
7003         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7004                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7005                 ins->type = STACK_R8;
7006                 ins->inst_p0 = (void*)&r8_0;
7007                 ins->dreg = dreg;
7008                 MONO_ADD_INS (cfg->cbb, ins);
7009         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7010                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7011                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7012         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7013                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7014         } else {
7015                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7016         }
7017 }
7018
7019 static void
7020 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7021 {
7022         int t;
7023
7024         rtype = mini_get_underlying_type (rtype);
7025         t = rtype->type;
7026
7027         if (rtype->byref) {
7028                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7029         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7030                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7031         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7032                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7033         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7034                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7035         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7036                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7037         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7038                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7039                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7040         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7041                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7042         } else {
7043                 emit_init_rvar (cfg, dreg, rtype);
7044         }
7045 }
7046
7047 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7048 static void
7049 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7050 {
7051         MonoInst *var = cfg->locals [local];
7052         if (COMPILE_SOFT_FLOAT (cfg)) {
7053                 MonoInst *store;
7054                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7055                 emit_init_rvar (cfg, reg, type);
7056                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7057         } else {
7058                 if (init)
7059                         emit_init_rvar (cfg, var->dreg, type);
7060                 else
7061                         emit_dummy_init_rvar (cfg, var->dreg, type);
7062         }
7063 }
7064
7065 /*
7066  * inline_method:
7067  *
7068  *   Return the cost of inlining CMETHOD.
7069  */
7070 static int
7071 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7072                            guchar *ip, guint real_offset, gboolean inline_always)
7073 {
7074         MonoError error;
7075         MonoInst *ins, *rvar = NULL;
7076         MonoMethodHeader *cheader;
7077         MonoBasicBlock *ebblock, *sbblock;
7078         int i, costs;
7079         MonoMethod *prev_inlined_method;
7080         MonoInst **prev_locals, **prev_args;
7081         MonoType **prev_arg_types;
7082         guint prev_real_offset;
7083         GHashTable *prev_cbb_hash;
7084         MonoBasicBlock **prev_cil_offset_to_bb;
7085         MonoBasicBlock *prev_cbb;
7086         unsigned char* prev_cil_start;
7087         guint32 prev_cil_offset_to_bb_len;
7088         MonoMethod *prev_current_method;
7089         MonoGenericContext *prev_generic_context;
7090         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7091
7092         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7093
7094 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7095         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7096                 return 0;
7097 #endif
7098 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7099         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7100                 return 0;
7101 #endif
7102
7103         if (!fsig)
7104                 fsig = mono_method_signature (cmethod);
7105
7106         if (cfg->verbose_level > 2)
7107                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7108
7109         if (!cmethod->inline_info) {
7110                 cfg->stat_inlineable_methods++;
7111                 cmethod->inline_info = 1;
7112         }
7113
7114         /* allocate local variables */
7115         cheader = mono_method_get_header_checked (cmethod, &error);
7116         if (!cheader) {
7117                 if (inline_always) {
7118                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7119                         mono_error_move (&cfg->error, &error);
7120                 } else {
7121                         mono_error_cleanup (&error);
7122                 }
7123                 return 0;
7124         }
7125
7126         /*Must verify before creating locals as it can cause the JIT to assert.*/
7127         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7128                 mono_metadata_free_mh (cheader);
7129                 return 0;
7130         }
7131
7132         /* allocate space to store the return value */
7133         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7134                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7135         }
7136
7137         prev_locals = cfg->locals;
7138         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7139         for (i = 0; i < cheader->num_locals; ++i)
7140                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7141
7142         /* allocate start and end blocks */
7143         /* This is needed so if the inline is aborted, we can clean up */
7144         NEW_BBLOCK (cfg, sbblock);
7145         sbblock->real_offset = real_offset;
7146
7147         NEW_BBLOCK (cfg, ebblock);
7148         ebblock->block_num = cfg->num_bblocks++;
7149         ebblock->real_offset = real_offset;
7150
7151         prev_args = cfg->args;
7152         prev_arg_types = cfg->arg_types;
7153         prev_inlined_method = cfg->inlined_method;
7154         cfg->inlined_method = cmethod;
7155         cfg->ret_var_set = FALSE;
7156         cfg->inline_depth ++;
7157         prev_real_offset = cfg->real_offset;
7158         prev_cbb_hash = cfg->cbb_hash;
7159         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7160         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7161         prev_cil_start = cfg->cil_start;
7162         prev_cbb = cfg->cbb;
7163         prev_current_method = cfg->current_method;
7164         prev_generic_context = cfg->generic_context;
7165         prev_ret_var_set = cfg->ret_var_set;
7166         prev_disable_inline = cfg->disable_inline;
7167
7168         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7169                 virtual_ = TRUE;
7170
7171         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7172
7173         ret_var_set = cfg->ret_var_set;
7174
7175         cfg->inlined_method = prev_inlined_method;
7176         cfg->real_offset = prev_real_offset;
7177         cfg->cbb_hash = prev_cbb_hash;
7178         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7179         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7180         cfg->cil_start = prev_cil_start;
7181         cfg->locals = prev_locals;
7182         cfg->args = prev_args;
7183         cfg->arg_types = prev_arg_types;
7184         cfg->current_method = prev_current_method;
7185         cfg->generic_context = prev_generic_context;
7186         cfg->ret_var_set = prev_ret_var_set;
7187         cfg->disable_inline = prev_disable_inline;
7188         cfg->inline_depth --;
7189
7190         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7191                 if (cfg->verbose_level > 2)
7192                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7193
7194                 cfg->stat_inlined_methods++;
7195
7196                 /* always add some code to avoid block split failures */
7197                 MONO_INST_NEW (cfg, ins, OP_NOP);
7198                 MONO_ADD_INS (prev_cbb, ins);
7199
7200                 prev_cbb->next_bb = sbblock;
7201                 link_bblock (cfg, prev_cbb, sbblock);
7202
7203                 /*
7204                  * Get rid of the begin and end bblocks if possible to aid local
7205                  * optimizations.
7206                  */
7207                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7208
7209                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7210                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7211
7212                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7213                         MonoBasicBlock *prev = ebblock->in_bb [0];
7214
7215                         if (prev->next_bb == ebblock) {
7216                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7217                                 cfg->cbb = prev;
7218                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7219                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7220                                         cfg->cbb = prev_cbb;
7221                                 }
7222                         } else {
7223                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7224                                 cfg->cbb = ebblock;
7225                         }
7226                 } else {
7227                         /*
7228                          * Its possible that the rvar is set in some prev bblock, but not in others.
7229                          * (#1835).
7230                          */
7231                         if (rvar) {
7232                                 MonoBasicBlock *bb;
7233
7234                                 for (i = 0; i < ebblock->in_count; ++i) {
7235                                         bb = ebblock->in_bb [i];
7236
7237                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7238                                                 cfg->cbb = bb;
7239
7240                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7241                                         }
7242                                 }
7243                         }
7244
7245                         cfg->cbb = ebblock;
7246                 }
7247
7248                 if (rvar) {
7249                         /*
7250                          * If the inlined method contains only a throw, then the ret var is not
7251                          * set, so set it to a dummy value.
7252                          */
7253                         if (!ret_var_set)
7254                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7255
7256                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7257                         *sp++ = ins;
7258                 }
7259                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7260                 return costs + 1;
7261         } else {
7262                 if (cfg->verbose_level > 2)
7263                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7264                 cfg->exception_type = MONO_EXCEPTION_NONE;
7265
7266                 /* This gets rid of the newly added bblocks */
7267                 cfg->cbb = prev_cbb;
7268         }
7269         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7270         return 0;
7271 }
7272
7273 /*
7274  * Some of these comments may well be out-of-date.
7275  * Design decisions: we do a single pass over the IL code (and we do bblock
7276  * splitting/merging in the few cases when it's required: a back jump to an IL
7277  * address that was not already seen as bblock starting point).
7278  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7279  * Complex operations are decomposed in simpler ones right away. We need to let the
7280  * arch-specific code peek and poke inside this process somehow (except when the
7281  * optimizations can take advantage of the full semantic info of coarse opcodes).
7282  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7283  * MonoInst->opcode initially is the IL opcode or some simplification of that
7284  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7285  * opcode with value bigger than OP_LAST.
7286  * At this point the IR can be handed over to an interpreter, a dumb code generator
7287  * or to the optimizing code generator that will translate it to SSA form.
7288  *
7289  * Profiling directed optimizations.
7290  * We may compile by default with few or no optimizations and instrument the code
7291  * or the user may indicate what methods to optimize the most either in a config file
7292  * or through repeated runs where the compiler applies offline the optimizations to
7293  * each method and then decides if it was worth it.
7294  */
7295
7296 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7297 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7298 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7299 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7300 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7301 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7302 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7303 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7304
7305 /* offset from br.s -> br like opcodes */
7306 #define BIG_BRANCH_OFFSET 13
7307
7308 static gboolean
7309 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7310 {
7311         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7312
7313         return b == NULL || b == bb;
7314 }
7315
7316 static int
7317 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7318 {
7319         unsigned char *ip = start;
7320         unsigned char *target;
7321         int i;
7322         guint cli_addr;
7323         MonoBasicBlock *bblock;
7324         const MonoOpcode *opcode;
7325
7326         while (ip < end) {
7327                 cli_addr = ip - start;
7328                 i = mono_opcode_value ((const guint8 **)&ip, end);
7329                 if (i < 0)
7330                         UNVERIFIED;
7331                 opcode = &mono_opcodes [i];
7332                 switch (opcode->argument) {
7333                 case MonoInlineNone:
7334                         ip++;
7335                         break;
7336                 case MonoInlineString:
7337                 case MonoInlineType:
7338                 case MonoInlineField:
7339                 case MonoInlineMethod:
7340                 case MonoInlineTok:
7341                 case MonoInlineSig:
7342                 case MonoShortInlineR:
7343                 case MonoInlineI:
7344                         ip += 5;
7345                         break;
7346                 case MonoInlineVar:
7347                         ip += 3;
7348                         break;
7349                 case MonoShortInlineVar:
7350                 case MonoShortInlineI:
7351                         ip += 2;
7352                         break;
7353                 case MonoShortInlineBrTarget:
7354                         target = start + cli_addr + 2 + (signed char)ip [1];
7355                         GET_BBLOCK (cfg, bblock, target);
7356                         ip += 2;
7357                         if (ip < end)
7358                                 GET_BBLOCK (cfg, bblock, ip);
7359                         break;
7360                 case MonoInlineBrTarget:
7361                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7362                         GET_BBLOCK (cfg, bblock, target);
7363                         ip += 5;
7364                         if (ip < end)
7365                                 GET_BBLOCK (cfg, bblock, ip);
7366                         break;
7367                 case MonoInlineSwitch: {
7368                         guint32 n = read32 (ip + 1);
7369                         guint32 j;
7370                         ip += 5;
7371                         cli_addr += 5 + 4 * n;
7372                         target = start + cli_addr;
7373                         GET_BBLOCK (cfg, bblock, target);
7374
7375                         for (j = 0; j < n; ++j) {
7376                                 target = start + cli_addr + (gint32)read32 (ip);
7377                                 GET_BBLOCK (cfg, bblock, target);
7378                                 ip += 4;
7379                         }
7380                         break;
7381                 }
7382                 case MonoInlineR:
7383                 case MonoInlineI8:
7384                         ip += 9;
7385                         break;
7386                 default:
7387                         g_assert_not_reached ();
7388                 }
7389
7390                 if (i == CEE_THROW) {
7391                         unsigned char *bb_start = ip - 1;
7392
7393                         /* Find the start of the bblock containing the throw */
7394                         bblock = NULL;
7395                         while ((bb_start >= start) && !bblock) {
7396                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7397                                 bb_start --;
7398                         }
7399                         if (bblock)
7400                                 bblock->out_of_line = 1;
7401                 }
7402         }
7403         return 0;
7404 unverified:
7405 exception_exit:
7406         *pos = ip;
7407         return 1;
7408 }
7409
7410 static inline MonoMethod *
7411 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7412 {
7413         MonoMethod *method;
7414
7415         mono_error_init (error);
7416
7417         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7418                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7419                 if (context) {
7420                         method = mono_class_inflate_generic_method_checked (method, context, error);
7421                 }
7422         } else {
7423                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7424         }
7425
7426         return method;
7427 }
7428
7429 static inline MonoMethod *
7430 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7431 {
7432         MonoError error;
7433         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7434
7435         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7436                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7437                 method = NULL;
7438         }
7439
7440         if (!method && !cfg)
7441                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7442
7443         return method;
7444 }
7445
7446 static inline MonoClass*
7447 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7448 {
7449         MonoError error;
7450         MonoClass *klass;
7451
7452         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7453                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7454                 if (context) {
7455                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7456                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7457                 }
7458         } else {
7459                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7460                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7461         }
7462         if (klass)
7463                 mono_class_init (klass);
7464         return klass;
7465 }
7466
7467 static inline MonoMethodSignature*
7468 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context, MonoError *error)
7469 {
7470         MonoMethodSignature *fsig;
7471
7472         mono_error_init (error);
7473         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7474                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7475         } else {
7476                 fsig = mono_metadata_parse_signature_checked (method->klass->image, token, error);
7477                 return_val_if_nok (error, NULL);
7478         }
7479         if (context) {
7480                 fsig = mono_inflate_generic_signature(fsig, context, error);
7481         }
7482         return fsig;
7483 }
7484
7485 static MonoMethod*
7486 throw_exception (void)
7487 {
7488         static MonoMethod *method = NULL;
7489
7490         if (!method) {
7491                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7492                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7493         }
7494         g_assert (method);
7495         return method;
7496 }
7497
7498 static void
7499 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7500 {
7501         MonoMethod *thrower = throw_exception ();
7502         MonoInst *args [1];
7503
7504         EMIT_NEW_PCONST (cfg, args [0], ex);
7505         mono_emit_method_call (cfg, thrower, args, NULL);
7506 }
7507
7508 /*
7509  * Return the original method is a wrapper is specified. We can only access
7510  * the custom attributes from the original method.
7511  */
7512 static MonoMethod*
7513 get_original_method (MonoMethod *method)
7514 {
7515         if (method->wrapper_type == MONO_WRAPPER_NONE)
7516                 return method;
7517
7518         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7519         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7520                 return NULL;
7521
7522         /* in other cases we need to find the original method */
7523         return mono_marshal_method_from_wrapper (method);
7524 }
7525
7526 static void
7527 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7528 {
7529         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7530         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7531         if (ex)
7532                 emit_throw_exception (cfg, ex);
7533 }
7534
7535 static void
7536 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7537 {
7538         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7539         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7540         if (ex)
7541                 emit_throw_exception (cfg, ex);
7542 }
7543
7544 /*
7545  * Check that the IL instructions at ip are the array initialization
7546  * sequence and return the pointer to the data and the size.
7547  */
7548 static const char*
7549 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7550 {
7551         /*
7552          * newarr[System.Int32]
7553          * dup
7554          * ldtoken field valuetype ...
7555          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7556          */
7557         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7558                 MonoError error;
7559                 guint32 token = read32 (ip + 7);
7560                 guint32 field_token = read32 (ip + 2);
7561                 guint32 field_index = field_token & 0xffffff;
7562                 guint32 rva;
7563                 const char *data_ptr;
7564                 int size = 0;
7565                 MonoMethod *cmethod;
7566                 MonoClass *dummy_class;
7567                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7568                 int dummy_align;
7569
7570                 if (!field) {
7571                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7572                         return NULL;
7573                 }
7574
7575                 *out_field_token = field_token;
7576
7577                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7578                 if (!cmethod)
7579                         return NULL;
7580                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7581                         return NULL;
7582                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7583                 case MONO_TYPE_BOOLEAN:
7584                 case MONO_TYPE_I1:
7585                 case MONO_TYPE_U1:
7586                         size = 1; break;
7587                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7588 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7589                 case MONO_TYPE_CHAR:
7590                 case MONO_TYPE_I2:
7591                 case MONO_TYPE_U2:
7592                         size = 2; break;
7593                 case MONO_TYPE_I4:
7594                 case MONO_TYPE_U4:
7595                 case MONO_TYPE_R4:
7596                         size = 4; break;
7597                 case MONO_TYPE_R8:
7598                 case MONO_TYPE_I8:
7599                 case MONO_TYPE_U8:
7600                         size = 8; break;
7601 #endif
7602                 default:
7603                         return NULL;
7604                 }
7605                 size *= len;
7606                 if (size > mono_type_size (field->type, &dummy_align))
7607                     return NULL;
7608                 *out_size = size;
7609                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7610                 if (!image_is_dynamic (method->klass->image)) {
7611                         field_index = read32 (ip + 2) & 0xffffff;
7612                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7613                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7614                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7615                         /* for aot code we do the lookup on load */
7616                         if (aot && data_ptr)
7617                                 return (const char *)GUINT_TO_POINTER (rva);
7618                 } else {
7619                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7620                         g_assert (!aot);
7621                         data_ptr = mono_field_get_data (field);
7622                 }
7623                 return data_ptr;
7624         }
7625         return NULL;
7626 }
7627
7628 static void
7629 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7630 {
7631         MonoError error;
7632         char *method_fname = mono_method_full_name (method, TRUE);
7633         char *method_code;
7634         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7635
7636         if (!header) {
7637                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7638                 mono_error_cleanup (&error);
7639         } else if (header->code_size == 0)
7640                 method_code = g_strdup ("method body is empty.");
7641         else
7642                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7643         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7644         g_free (method_fname);
7645         g_free (method_code);
7646         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7647 }
7648
7649 static void
7650 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7651 {
7652         MonoInst *ins;
7653         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7654         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7655                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7656                 /* Optimize reg-reg moves away */
7657                 /*
7658                  * Can't optimize other opcodes, since sp[0] might point to
7659                  * the last ins of a decomposed opcode.
7660                  */
7661                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7662         } else {
7663                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7664         }
7665 }
7666
7667 /*
7668  * ldloca inhibits many optimizations so try to get rid of it in common
7669  * cases.
7670  */
7671 static inline unsigned char *
7672 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7673 {
7674         int local, token;
7675         MonoClass *klass;
7676         MonoType *type;
7677
7678         if (size == 1) {
7679                 local = ip [1];
7680                 ip += 2;
7681         } else {
7682                 local = read16 (ip + 2);
7683                 ip += 4;
7684         }
7685
7686         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7687                 /* From the INITOBJ case */
7688                 token = read32 (ip + 2);
7689                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7690                 CHECK_TYPELOAD (klass);
7691                 type = mini_get_underlying_type (&klass->byval_arg);
7692                 emit_init_local (cfg, local, type, TRUE);
7693                 return ip + 6;
7694         }
7695  exception_exit:
7696         return NULL;
7697 }
7698
7699 static MonoInst*
7700 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7701 {
7702         MonoInst *icall_args [16];
7703         MonoInst *call_target, *ins, *vtable_ins;
7704         int arg_reg, this_reg, vtable_reg;
7705         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7706         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7707         gboolean variant_iface = FALSE;
7708         guint32 slot;
7709         int offset;
7710
7711         /*
7712          * In llvm-only mode, vtables contain function descriptors instead of
7713          * method addresses/trampolines.
7714          */
7715         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7716
7717         if (is_iface)
7718                 slot = mono_method_get_imt_slot (cmethod);
7719         else
7720                 slot = mono_method_get_vtable_index (cmethod);
7721
7722         this_reg = sp [0]->dreg;
7723
7724         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7725                 variant_iface = TRUE;
7726
7727         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7728                 /*
7729                  * The simplest case, a normal virtual call.
7730                  */
7731                 int slot_reg = alloc_preg (cfg);
7732                 int addr_reg = alloc_preg (cfg);
7733                 int arg_reg = alloc_preg (cfg);
7734                 MonoBasicBlock *non_null_bb;
7735
7736                 vtable_reg = alloc_preg (cfg);
7737                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7738                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7739
7740                 /* Load the vtable slot, which contains a function descriptor. */
7741                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7742
7743                 NEW_BBLOCK (cfg, non_null_bb);
7744
7745                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7746                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7747                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7748
7749                 /* Slow path */
7750                 // FIXME: Make the wrapper use the preserveall cconv
7751                 // FIXME: Use one icall per slot for small slot numbers ?
7752                 icall_args [0] = vtable_ins;
7753                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7754                 /* Make the icall return the vtable slot value to save some code space */
7755                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7756                 ins->dreg = slot_reg;
7757                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7758
7759                 /* Fastpath */
7760                 MONO_START_BB (cfg, non_null_bb);
7761                 /* Load the address + arg from the vtable slot */
7762                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7763                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7764
7765                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7766         }
7767
7768         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7769                 /*
7770                  * A simple interface call
7771                  *
7772                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7773                  * The imt slot contains a function descriptor for a runtime function + arg.
7774                  */
7775                 int slot_reg = alloc_preg (cfg);
7776                 int addr_reg = alloc_preg (cfg);
7777                 int arg_reg = alloc_preg (cfg);
7778                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7779
7780                 vtable_reg = alloc_preg (cfg);
7781                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7782                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7783
7784                 /*
7785                  * The slot is already initialized when the vtable is created so there is no need
7786                  * to check it here.
7787                  */
7788
7789                 /* Load the imt slot, which contains a function descriptor. */
7790                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7791
7792                 /* Load the address + arg of the imt thunk from the imt slot */
7793                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7794                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7795                 /*
7796                  * IMT thunks in llvm-only mode are C functions which take an info argument
7797                  * plus the imt method and return the ftndesc to call.
7798                  */
7799                 icall_args [0] = thunk_arg_ins;
7800                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7801                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7802                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7803
7804                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7805         }
7806
7807         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7808                 /*
7809                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7810                  * dynamically extended as more instantiations are discovered.
7811                  * This handles generic virtual methods both on classes and interfaces.
7812                  */
7813                 int slot_reg = alloc_preg (cfg);
7814                 int addr_reg = alloc_preg (cfg);
7815                 int arg_reg = alloc_preg (cfg);
7816                 int ftndesc_reg = alloc_preg (cfg);
7817                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7818                 MonoBasicBlock *slowpath_bb, *end_bb;
7819
7820                 NEW_BBLOCK (cfg, slowpath_bb);
7821                 NEW_BBLOCK (cfg, end_bb);
7822
7823                 vtable_reg = alloc_preg (cfg);
7824                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7825                 if (is_iface)
7826                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7827                 else
7828                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7829
7830                 /* Load the slot, which contains a function descriptor. */
7831                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7832
7833                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7834                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7835                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7836                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7837
7838                 /* Fastpath */
7839                 /* Same as with iface calls */
7840                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7841                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7842                 icall_args [0] = thunk_arg_ins;
7843                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7844                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7845                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7846                 ftndesc_ins->dreg = ftndesc_reg;
7847                 /*
7848                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7849                  * they don't know about yet. Fall back to the slowpath in that case.
7850                  */
7851                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7852                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7853
7854                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7855
7856                 /* Slowpath */
7857                 MONO_START_BB (cfg, slowpath_bb);
7858                 icall_args [0] = vtable_ins;
7859                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7860                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7861                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7862                 if (is_iface)
7863                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7864                 else
7865                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7866                 ftndesc_ins->dreg = ftndesc_reg;
7867                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7868
7869                 /* Common case */
7870                 MONO_START_BB (cfg, end_bb);
7871                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7872         }
7873
7874         /*
7875          * Non-optimized cases
7876          */
7877         icall_args [0] = sp [0];
7878         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7879
7880         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7881                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7882
7883         arg_reg = alloc_preg (cfg);
7884         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7885         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7886
7887         g_assert (is_gsharedvt);
7888         if (is_iface)
7889                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7890         else
7891                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7892
7893         /*
7894          * Pass the extra argument even if the callee doesn't receive it, most
7895          * calling conventions allow this.
7896          */
7897         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7898 }
7899
7900 static gboolean
7901 is_exception_class (MonoClass *klass)
7902 {
7903         while (klass) {
7904                 if (klass == mono_defaults.exception_class)
7905                         return TRUE;
7906                 klass = klass->parent;
7907         }
7908         return FALSE;
7909 }
7910
7911 /*
7912  * is_jit_optimizer_disabled:
7913  *
7914  *   Determine whenever M's assembly has a DebuggableAttribute with the
7915  * IsJITOptimizerDisabled flag set.
7916  */
7917 static gboolean
7918 is_jit_optimizer_disabled (MonoMethod *m)
7919 {
7920         MonoError error;
7921         MonoAssembly *ass = m->klass->image->assembly;
7922         MonoCustomAttrInfo* attrs;
7923         MonoClass *klass;
7924         int i;
7925         gboolean val = FALSE;
7926
7927         g_assert (ass);
7928         if (ass->jit_optimizer_disabled_inited)
7929                 return ass->jit_optimizer_disabled;
7930
7931         klass = mono_class_try_get_debuggable_attribute_class ();
7932
7933         if (!klass) {
7934                 /* Linked away */
7935                 ass->jit_optimizer_disabled = FALSE;
7936                 mono_memory_barrier ();
7937                 ass->jit_optimizer_disabled_inited = TRUE;
7938                 return FALSE;
7939         }
7940
7941         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7942         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7943         if (attrs) {
7944                 for (i = 0; i < attrs->num_attrs; ++i) {
7945                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7946                         const gchar *p;
7947                         MonoMethodSignature *sig;
7948
7949                         if (!attr->ctor || attr->ctor->klass != klass)
7950                                 continue;
7951                         /* Decode the attribute. See reflection.c */
7952                         p = (const char*)attr->data;
7953                         g_assert (read16 (p) == 0x0001);
7954                         p += 2;
7955
7956                         // FIXME: Support named parameters
7957                         sig = mono_method_signature (attr->ctor);
7958                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7959                                 continue;
7960                         /* Two boolean arguments */
7961                         p ++;
7962                         val = *p;
7963                 }
7964                 mono_custom_attrs_free (attrs);
7965         }
7966
7967         ass->jit_optimizer_disabled = val;
7968         mono_memory_barrier ();
7969         ass->jit_optimizer_disabled_inited = TRUE;
7970
7971         return val;
7972 }
7973
7974 static gboolean
7975 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7976 {
7977         gboolean supported_tail_call;
7978         int i;
7979
7980         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7981
7982         for (i = 0; i < fsig->param_count; ++i) {
7983                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7984                         /* These can point to the current method's stack */
7985                         supported_tail_call = FALSE;
7986         }
7987         if (fsig->hasthis && cmethod->klass->valuetype)
7988                 /* this might point to the current method's stack */
7989                 supported_tail_call = FALSE;
7990         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7991                 supported_tail_call = FALSE;
7992         if (cfg->method->save_lmf)
7993                 supported_tail_call = FALSE;
7994         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7995                 supported_tail_call = FALSE;
7996         if (call_opcode != CEE_CALL)
7997                 supported_tail_call = FALSE;
7998
7999         /* Debugging support */
8000 #if 0
8001         if (supported_tail_call) {
8002                 if (!mono_debug_count ())
8003                         supported_tail_call = FALSE;
8004         }
8005 #endif
8006
8007         return supported_tail_call;
8008 }
8009
8010 /*
8011  * handle_ctor_call:
8012  *
8013  *   Handle calls made to ctors from NEWOBJ opcodes.
8014  */
8015 static void
8016 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8017                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8018 {
8019         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8020
8021         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8022                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8023                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8024                         mono_class_vtable (cfg->domain, cmethod->klass);
8025                         CHECK_TYPELOAD (cmethod->klass);
8026
8027                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8028                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8029                 } else {
8030                         if (context_used) {
8031                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8032                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8033                         } else {
8034                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8035
8036                                 CHECK_TYPELOAD (cmethod->klass);
8037                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8038                         }
8039                 }
8040         }
8041
8042         /* Avoid virtual calls to ctors if possible */
8043         if (mono_class_is_marshalbyref (cmethod->klass))
8044                 callvirt_this_arg = sp [0];
8045
8046         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8047                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8048                 CHECK_CFG_EXCEPTION;
8049         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8050                            mono_method_check_inlining (cfg, cmethod) &&
8051                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8052                 int costs;
8053
8054                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8055                         cfg->real_offset += 5;
8056
8057                         *inline_costs += costs - 5;
8058                 } else {
8059                         INLINE_FAILURE ("inline failure");
8060                         // FIXME-VT: Clean this up
8061                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8062                                 GSHAREDVT_FAILURE(*ip);
8063                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8064                 }
8065         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8066                 MonoInst *addr;
8067
8068                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8069
8070                 if (cfg->llvm_only) {
8071                         // FIXME: Avoid initializing vtable_arg
8072                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8073                 } else {
8074                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8075                 }
8076         } else if (context_used &&
8077                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8078                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8079                 MonoInst *cmethod_addr;
8080
8081                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8082
8083                 if (cfg->llvm_only) {
8084                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8085                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8086                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8087                 } else {
8088                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8089                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8090
8091                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8092                 }
8093         } else {
8094                 INLINE_FAILURE ("ctor call");
8095                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8096                                                                                   callvirt_this_arg, NULL, vtable_arg);
8097         }
8098  exception_exit:
8099         return;
8100 }
8101
8102 static void
8103 emit_setret (MonoCompile *cfg, MonoInst *val)
8104 {
8105         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8106         MonoInst *ins;
8107
8108         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8109                 MonoInst *ret_addr;
8110
8111                 if (!cfg->vret_addr) {
8112                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8113                 } else {
8114                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8115
8116                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8117                         ins->klass = mono_class_from_mono_type (ret_type);
8118                 }
8119         } else {
8120 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8121                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8122                         MonoInst *iargs [1];
8123                         MonoInst *conv;
8124
8125                         iargs [0] = val;
8126                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8127                         mono_arch_emit_setret (cfg, cfg->method, conv);
8128                 } else {
8129                         mono_arch_emit_setret (cfg, cfg->method, val);
8130                 }
8131 #else
8132                 mono_arch_emit_setret (cfg, cfg->method, val);
8133 #endif
8134         }
8135 }
8136
8137 /*
8138  * mono_method_to_ir:
8139  *
8140  *   Translate the .net IL into linear IR.
8141  */
8142 int
8143 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8144                    MonoInst *return_var, MonoInst **inline_args,
8145                    guint inline_offset, gboolean is_virtual_call)
8146 {
8147         MonoError error;
8148         MonoInst *ins, **sp, **stack_start;
8149         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8150         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8151         MonoMethod *cmethod, *method_definition;
8152         MonoInst **arg_array;
8153         MonoMethodHeader *header;
8154         MonoImage *image;
8155         guint32 token, ins_flag;
8156         MonoClass *klass;
8157         MonoClass *constrained_class = NULL;
8158         unsigned char *ip, *end, *target, *err_pos;
8159         MonoMethodSignature *sig;
8160         MonoGenericContext *generic_context = NULL;
8161         MonoGenericContainer *generic_container = NULL;
8162         MonoType **param_types;
8163         int i, n, start_new_bblock, dreg;
8164         int num_calls = 0, inline_costs = 0;
8165         int breakpoint_id = 0;
8166         guint num_args;
8167         GSList *class_inits = NULL;
8168         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8169         int context_used;
8170         gboolean init_locals, seq_points, skip_dead_blocks;
8171         gboolean sym_seq_points = FALSE;
8172         MonoDebugMethodInfo *minfo;
8173         MonoBitSet *seq_point_locs = NULL;
8174         MonoBitSet *seq_point_set_locs = NULL;
8175
8176         cfg->disable_inline = is_jit_optimizer_disabled (method);
8177
8178         /* serialization and xdomain stuff may need access to private fields and methods */
8179         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8184         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8185
8186         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8187         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8188         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8190         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8191
8192         image = method->klass->image;
8193         header = mono_method_get_header_checked (method, &cfg->error);
8194         if (!header) {
8195                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8196                 goto exception_exit;
8197         }
8198         generic_container = mono_method_get_generic_container (method);
8199         sig = mono_method_signature (method);
8200         num_args = sig->hasthis + sig->param_count;
8201         ip = (unsigned char*)header->code;
8202         cfg->cil_start = ip;
8203         end = ip + header->code_size;
8204         cfg->stat_cil_code_size += header->code_size;
8205
8206         seq_points = cfg->gen_seq_points && cfg->method == method;
8207
8208         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8209                 /* We could hit a seq point before attaching to the JIT (#8338) */
8210                 seq_points = FALSE;
8211         }
8212
8213         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8214                 minfo = mono_debug_lookup_method (method);
8215                 if (minfo) {
8216                         MonoSymSeqPoint *sps;
8217                         int i, n_il_offsets;
8218
8219                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8220                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8221                         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);
8222                         sym_seq_points = TRUE;
8223                         for (i = 0; i < n_il_offsets; ++i) {
8224                                 if (sps [i].il_offset < header->code_size)
8225                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8226                         }
8227                         g_free (sps);
8228                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8229                         /* Methods without line number info like auto-generated property accessors */
8230                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8231                         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);
8232                         sym_seq_points = TRUE;
8233                 }
8234         }
8235
8236         /*
8237          * Methods without init_locals set could cause asserts in various passes
8238          * (#497220). To work around this, we emit dummy initialization opcodes
8239          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8240          * on some platforms.
8241          */
8242         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8243                 init_locals = header->init_locals;
8244         else
8245                 init_locals = TRUE;
8246
8247         method_definition = method;
8248         while (method_definition->is_inflated) {
8249                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8250                 method_definition = imethod->declaring;
8251         }
8252
8253         /* SkipVerification is not allowed if core-clr is enabled */
8254         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8255                 dont_verify = TRUE;
8256                 dont_verify_stloc = TRUE;
8257         }
8258
8259         if (sig->is_inflated)
8260                 generic_context = mono_method_get_context (method);
8261         else if (generic_container)
8262                 generic_context = &generic_container->context;
8263         cfg->generic_context = generic_context;
8264
8265         if (!cfg->gshared)
8266                 g_assert (!sig->has_type_parameters);
8267
8268         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8269                 g_assert (method->is_inflated);
8270                 g_assert (mono_method_get_context (method)->method_inst);
8271         }
8272         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8273                 g_assert (sig->generic_param_count);
8274
8275         if (cfg->method == method) {
8276                 cfg->real_offset = 0;
8277         } else {
8278                 cfg->real_offset = inline_offset;
8279         }
8280
8281         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8282         cfg->cil_offset_to_bb_len = header->code_size;
8283
8284         cfg->current_method = method;
8285
8286         if (cfg->verbose_level > 2)
8287                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8288
8289         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8290         if (sig->hasthis)
8291                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8292         for (n = 0; n < sig->param_count; ++n)
8293                 param_types [n + sig->hasthis] = sig->params [n];
8294         cfg->arg_types = param_types;
8295
8296         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8297         if (cfg->method == method) {
8298
8299                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8300                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8301
8302                 /* ENTRY BLOCK */
8303                 NEW_BBLOCK (cfg, start_bblock);
8304                 cfg->bb_entry = start_bblock;
8305                 start_bblock->cil_code = NULL;
8306                 start_bblock->cil_length = 0;
8307
8308                 /* EXIT BLOCK */
8309                 NEW_BBLOCK (cfg, end_bblock);
8310                 cfg->bb_exit = end_bblock;
8311                 end_bblock->cil_code = NULL;
8312                 end_bblock->cil_length = 0;
8313                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8314                 g_assert (cfg->num_bblocks == 2);
8315
8316                 arg_array = cfg->args;
8317
8318                 if (header->num_clauses) {
8319                         cfg->spvars = g_hash_table_new (NULL, NULL);
8320                         cfg->exvars = g_hash_table_new (NULL, NULL);
8321                 }
8322                 /* handle exception clauses */
8323                 for (i = 0; i < header->num_clauses; ++i) {
8324                         MonoBasicBlock *try_bb;
8325                         MonoExceptionClause *clause = &header->clauses [i];
8326                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8327
8328                         try_bb->real_offset = clause->try_offset;
8329                         try_bb->try_start = TRUE;
8330                         try_bb->region = ((i + 1) << 8) | clause->flags;
8331                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8332                         tblock->real_offset = clause->handler_offset;
8333                         tblock->flags |= BB_EXCEPTION_HANDLER;
8334
8335                         /*
8336                          * Linking the try block with the EH block hinders inlining as we won't be able to
8337                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8338                          */
8339                         if (COMPILE_LLVM (cfg))
8340                                 link_bblock (cfg, try_bb, tblock);
8341
8342                         if (*(ip + clause->handler_offset) == CEE_POP)
8343                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8344
8345                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8346                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8347                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8348                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8349                                 MONO_ADD_INS (tblock, ins);
8350
8351                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8352                                         /* finally clauses already have a seq point */
8353                                         /* seq points for filter clauses are emitted below */
8354                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8355                                         MONO_ADD_INS (tblock, ins);
8356                                 }
8357
8358                                 /* todo: is a fault block unsafe to optimize? */
8359                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8360                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8361                         }
8362
8363                         /*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);
8364                           while (p < end) {
8365                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8366                           }*/
8367                         /* catch and filter blocks get the exception object on the stack */
8368                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8369                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8370
8371                                 /* mostly like handle_stack_args (), but just sets the input args */
8372                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8373                                 tblock->in_scount = 1;
8374                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8375                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8376
8377                                 cfg->cbb = tblock;
8378
8379 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8380                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8381                                 if (!cfg->compile_llvm) {
8382                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8383                                         ins->dreg = tblock->in_stack [0]->dreg;
8384                                         MONO_ADD_INS (tblock, ins);
8385                                 }
8386 #else
8387                                 MonoInst *dummy_use;
8388
8389                                 /*
8390                                  * Add a dummy use for the exvar so its liveness info will be
8391                                  * correct.
8392                                  */
8393                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8394 #endif
8395
8396                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8397                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8398                                         MONO_ADD_INS (tblock, ins);
8399                                 }
8400
8401                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8402                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8403                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8404                                         tblock->real_offset = clause->data.filter_offset;
8405                                         tblock->in_scount = 1;
8406                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8407                                         /* The filter block shares the exvar with the handler block */
8408                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8409                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8410                                         MONO_ADD_INS (tblock, ins);
8411                                 }
8412                         }
8413
8414                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8415                                         clause->data.catch_class &&
8416                                         cfg->gshared &&
8417                                         mono_class_check_context_used (clause->data.catch_class)) {
8418                                 /*
8419                                  * In shared generic code with catch
8420                                  * clauses containing type variables
8421                                  * the exception handling code has to
8422                                  * be able to get to the rgctx.
8423                                  * Therefore we have to make sure that
8424                                  * the vtable/mrgctx argument (for
8425                                  * static or generic methods) or the
8426                                  * "this" argument (for non-static
8427                                  * methods) are live.
8428                                  */
8429                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8430                                                 mini_method_get_context (method)->method_inst ||
8431                                                 method->klass->valuetype) {
8432                                         mono_get_vtable_var (cfg);
8433                                 } else {
8434                                         MonoInst *dummy_use;
8435
8436                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8437                                 }
8438                         }
8439                 }
8440         } else {
8441                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8442                 cfg->cbb = start_bblock;
8443                 cfg->args = arg_array;
8444                 mono_save_args (cfg, sig, inline_args);
8445         }
8446
8447         /* FIRST CODE BLOCK */
8448         NEW_BBLOCK (cfg, tblock);
8449         tblock->cil_code = ip;
8450         cfg->cbb = tblock;
8451         cfg->ip = ip;
8452
8453         ADD_BBLOCK (cfg, tblock);
8454
8455         if (cfg->method == method) {
8456                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8457                 if (breakpoint_id) {
8458                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8459                         MONO_ADD_INS (cfg->cbb, ins);
8460                 }
8461         }
8462
8463         /* we use a separate basic block for the initialization code */
8464         NEW_BBLOCK (cfg, init_localsbb);
8465         cfg->bb_init = init_localsbb;
8466         init_localsbb->real_offset = cfg->real_offset;
8467         start_bblock->next_bb = init_localsbb;
8468         init_localsbb->next_bb = cfg->cbb;
8469         link_bblock (cfg, start_bblock, init_localsbb);
8470         link_bblock (cfg, init_localsbb, cfg->cbb);
8471
8472         cfg->cbb = init_localsbb;
8473
8474         if (cfg->gsharedvt && cfg->method == method) {
8475                 MonoGSharedVtMethodInfo *info;
8476                 MonoInst *var, *locals_var;
8477                 int dreg;
8478
8479                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8480                 info->method = cfg->method;
8481                 info->count_entries = 16;
8482                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8483                 cfg->gsharedvt_info = info;
8484
8485                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8486                 /* prevent it from being register allocated */
8487                 //var->flags |= MONO_INST_VOLATILE;
8488                 cfg->gsharedvt_info_var = var;
8489
8490                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8491                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8492
8493                 /* Allocate locals */
8494                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8495                 /* prevent it from being register allocated */
8496                 //locals_var->flags |= MONO_INST_VOLATILE;
8497                 cfg->gsharedvt_locals_var = locals_var;
8498
8499                 dreg = alloc_ireg (cfg);
8500                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8501
8502                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8503                 ins->dreg = locals_var->dreg;
8504                 ins->sreg1 = dreg;
8505                 MONO_ADD_INS (cfg->cbb, ins);
8506                 cfg->gsharedvt_locals_var_ins = ins;
8507
8508                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8509                 /*
8510                 if (init_locals)
8511                         ins->flags |= MONO_INST_INIT;
8512                 */
8513         }
8514
8515         if (mono_security_core_clr_enabled ()) {
8516                 /* check if this is native code, e.g. an icall or a p/invoke */
8517                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8518                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8519                         if (wrapped) {
8520                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8521                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8522
8523                                 /* if this ia a native call then it can only be JITted from platform code */
8524                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8525                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8526                                                 MonoException *ex = icall ? mono_get_exception_security () :
8527                                                         mono_get_exception_method_access ();
8528                                                 emit_throw_exception (cfg, ex);
8529                                         }
8530                                 }
8531                         }
8532                 }
8533         }
8534
8535         CHECK_CFG_EXCEPTION;
8536
8537         if (header->code_size == 0)
8538                 UNVERIFIED;
8539
8540         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8541                 ip = err_pos;
8542                 UNVERIFIED;
8543         }
8544
8545         if (cfg->method == method)
8546                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8547
8548         for (n = 0; n < header->num_locals; ++n) {
8549                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8550                         UNVERIFIED;
8551         }
8552         class_inits = NULL;
8553
8554         /* We force the vtable variable here for all shared methods
8555            for the possibility that they might show up in a stack
8556            trace where their exact instantiation is needed. */
8557         if (cfg->gshared && method == cfg->method) {
8558                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8559                                 mini_method_get_context (method)->method_inst ||
8560                                 method->klass->valuetype) {
8561                         mono_get_vtable_var (cfg);
8562                 } else {
8563                         /* FIXME: Is there a better way to do this?
8564                            We need the variable live for the duration
8565                            of the whole method. */
8566                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8567                 }
8568         }
8569
8570         /* add a check for this != NULL to inlined methods */
8571         if (is_virtual_call) {
8572                 MonoInst *arg_ins;
8573
8574                 NEW_ARGLOAD (cfg, arg_ins, 0);
8575                 MONO_ADD_INS (cfg->cbb, arg_ins);
8576                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8577         }
8578
8579         skip_dead_blocks = !dont_verify;
8580         if (skip_dead_blocks) {
8581                 original_bb = bb = mono_basic_block_split (method, &cfg->error, header);
8582                 CHECK_CFG_ERROR;
8583                 g_assert (bb);
8584         }
8585
8586         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8587         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8588
8589         ins_flag = 0;
8590         start_new_bblock = 0;
8591         while (ip < end) {
8592                 if (cfg->method == method)
8593                         cfg->real_offset = ip - header->code;
8594                 else
8595                         cfg->real_offset = inline_offset;
8596                 cfg->ip = ip;
8597
8598                 context_used = 0;
8599
8600                 if (start_new_bblock) {
8601                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8602                         if (start_new_bblock == 2) {
8603                                 g_assert (ip == tblock->cil_code);
8604                         } else {
8605                                 GET_BBLOCK (cfg, tblock, ip);
8606                         }
8607                         cfg->cbb->next_bb = tblock;
8608                         cfg->cbb = tblock;
8609                         start_new_bblock = 0;
8610                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8611                                 if (cfg->verbose_level > 3)
8612                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8613                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8614                                 *sp++ = ins;
8615                         }
8616                         if (class_inits)
8617                                 g_slist_free (class_inits);
8618                         class_inits = NULL;
8619                 } else {
8620                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8621                                 link_bblock (cfg, cfg->cbb, tblock);
8622                                 if (sp != stack_start) {
8623                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8624                                         sp = stack_start;
8625                                         CHECK_UNVERIFIABLE (cfg);
8626                                 }
8627                                 cfg->cbb->next_bb = tblock;
8628                                 cfg->cbb = tblock;
8629                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8630                                         if (cfg->verbose_level > 3)
8631                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8632                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8633                                         *sp++ = ins;
8634                                 }
8635                                 g_slist_free (class_inits);
8636                                 class_inits = NULL;
8637                         }
8638                 }
8639
8640                 if (skip_dead_blocks) {
8641                         int ip_offset = ip - header->code;
8642
8643                         if (ip_offset == bb->end)
8644                                 bb = bb->next;
8645
8646                         if (bb->dead) {
8647                                 int op_size = mono_opcode_size (ip, end);
8648                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8649
8650                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8651
8652                                 if (ip_offset + op_size == bb->end) {
8653                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8654                                         MONO_ADD_INS (cfg->cbb, ins);
8655                                         start_new_bblock = 1;
8656                                 }
8657
8658                                 ip += op_size;
8659                                 continue;
8660                         }
8661                 }
8662                 /*
8663                  * Sequence points are points where the debugger can place a breakpoint.
8664                  * Currently, we generate these automatically at points where the IL
8665                  * stack is empty.
8666                  */
8667                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8668                         /*
8669                          * Make methods interruptable at the beginning, and at the targets of
8670                          * backward branches.
8671                          * Also, do this at the start of every bblock in methods with clauses too,
8672                          * to be able to handle instructions with inprecise control flow like
8673                          * throw/endfinally.
8674                          * Backward branches are handled at the end of method-to-ir ().
8675                          */
8676                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8677                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8678
8679                         /* Avoid sequence points on empty IL like .volatile */
8680                         // FIXME: Enable this
8681                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8682                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8683                         if ((sp != stack_start) && !sym_seq_point)
8684                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8685                         MONO_ADD_INS (cfg->cbb, ins);
8686
8687                         if (sym_seq_points)
8688                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8689                 }
8690
8691                 cfg->cbb->real_offset = cfg->real_offset;
8692
8693                 if ((cfg->method == method) && cfg->coverage_info) {
8694                         guint32 cil_offset = ip - header->code;
8695                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8696
8697                         /* TODO: Use an increment here */
8698 #if defined(TARGET_X86)
8699                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8700                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8701                         ins->inst_imm = 1;
8702                         MONO_ADD_INS (cfg->cbb, ins);
8703 #else
8704                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8705                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8706 #endif
8707                 }
8708
8709                 if (cfg->verbose_level > 3)
8710                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8711
8712                 switch (*ip) {
8713                 case CEE_NOP:
8714                         if (seq_points && !sym_seq_points && sp != stack_start) {
8715                                 /*
8716                                  * The C# compiler uses these nops to notify the JIT that it should
8717                                  * insert seq points.
8718                                  */
8719                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8720                                 MONO_ADD_INS (cfg->cbb, ins);
8721                         }
8722                         if (cfg->keep_cil_nops)
8723                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8724                         else
8725                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8726                         ip++;
8727                         MONO_ADD_INS (cfg->cbb, ins);
8728                         break;
8729                 case CEE_BREAK:
8730                         if (should_insert_brekpoint (cfg->method)) {
8731                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8732                         } else {
8733                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8734                         }
8735                         ip++;
8736                         MONO_ADD_INS (cfg->cbb, ins);
8737                         break;
8738                 case CEE_LDARG_0:
8739                 case CEE_LDARG_1:
8740                 case CEE_LDARG_2:
8741                 case CEE_LDARG_3:
8742                         CHECK_STACK_OVF (1);
8743                         n = (*ip)-CEE_LDARG_0;
8744                         CHECK_ARG (n);
8745                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8746                         ip++;
8747                         *sp++ = ins;
8748                         break;
8749                 case CEE_LDLOC_0:
8750                 case CEE_LDLOC_1:
8751                 case CEE_LDLOC_2:
8752                 case CEE_LDLOC_3:
8753                         CHECK_STACK_OVF (1);
8754                         n = (*ip)-CEE_LDLOC_0;
8755                         CHECK_LOCAL (n);
8756                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8757                         ip++;
8758                         *sp++ = ins;
8759                         break;
8760                 case CEE_STLOC_0:
8761                 case CEE_STLOC_1:
8762                 case CEE_STLOC_2:
8763                 case CEE_STLOC_3: {
8764                         CHECK_STACK (1);
8765                         n = (*ip)-CEE_STLOC_0;
8766                         CHECK_LOCAL (n);
8767                         --sp;
8768                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8769                                 UNVERIFIED;
8770                         emit_stloc_ir (cfg, sp, header, n);
8771                         ++ip;
8772                         inline_costs += 1;
8773                         break;
8774                         }
8775                 case CEE_LDARG_S:
8776                         CHECK_OPSIZE (2);
8777                         CHECK_STACK_OVF (1);
8778                         n = ip [1];
8779                         CHECK_ARG (n);
8780                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8781                         *sp++ = ins;
8782                         ip += 2;
8783                         break;
8784                 case CEE_LDARGA_S:
8785                         CHECK_OPSIZE (2);
8786                         CHECK_STACK_OVF (1);
8787                         n = ip [1];
8788                         CHECK_ARG (n);
8789                         NEW_ARGLOADA (cfg, ins, n);
8790                         MONO_ADD_INS (cfg->cbb, ins);
8791                         *sp++ = ins;
8792                         ip += 2;
8793                         break;
8794                 case CEE_STARG_S:
8795                         CHECK_OPSIZE (2);
8796                         CHECK_STACK (1);
8797                         --sp;
8798                         n = ip [1];
8799                         CHECK_ARG (n);
8800                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8801                                 UNVERIFIED;
8802                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8803                         ip += 2;
8804                         break;
8805                 case CEE_LDLOC_S:
8806                         CHECK_OPSIZE (2);
8807                         CHECK_STACK_OVF (1);
8808                         n = ip [1];
8809                         CHECK_LOCAL (n);
8810                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8811                         *sp++ = ins;
8812                         ip += 2;
8813                         break;
8814                 case CEE_LDLOCA_S: {
8815                         unsigned char *tmp_ip;
8816                         CHECK_OPSIZE (2);
8817                         CHECK_STACK_OVF (1);
8818                         CHECK_LOCAL (ip [1]);
8819
8820                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8821                                 ip = tmp_ip;
8822                                 inline_costs += 1;
8823                                 break;
8824                         }
8825
8826                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8827                         *sp++ = ins;
8828                         ip += 2;
8829                         break;
8830                 }
8831                 case CEE_STLOC_S:
8832                         CHECK_OPSIZE (2);
8833                         CHECK_STACK (1);
8834                         --sp;
8835                         CHECK_LOCAL (ip [1]);
8836                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8837                                 UNVERIFIED;
8838                         emit_stloc_ir (cfg, sp, header, ip [1]);
8839                         ip += 2;
8840                         inline_costs += 1;
8841                         break;
8842                 case CEE_LDNULL:
8843                         CHECK_STACK_OVF (1);
8844                         EMIT_NEW_PCONST (cfg, ins, NULL);
8845                         ins->type = STACK_OBJ;
8846                         ++ip;
8847                         *sp++ = ins;
8848                         break;
8849                 case CEE_LDC_I4_M1:
8850                         CHECK_STACK_OVF (1);
8851                         EMIT_NEW_ICONST (cfg, ins, -1);
8852                         ++ip;
8853                         *sp++ = ins;
8854                         break;
8855                 case CEE_LDC_I4_0:
8856                 case CEE_LDC_I4_1:
8857                 case CEE_LDC_I4_2:
8858                 case CEE_LDC_I4_3:
8859                 case CEE_LDC_I4_4:
8860                 case CEE_LDC_I4_5:
8861                 case CEE_LDC_I4_6:
8862                 case CEE_LDC_I4_7:
8863                 case CEE_LDC_I4_8:
8864                         CHECK_STACK_OVF (1);
8865                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8866                         ++ip;
8867                         *sp++ = ins;
8868                         break;
8869                 case CEE_LDC_I4_S:
8870                         CHECK_OPSIZE (2);
8871                         CHECK_STACK_OVF (1);
8872                         ++ip;
8873                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8874                         ++ip;
8875                         *sp++ = ins;
8876                         break;
8877                 case CEE_LDC_I4:
8878                         CHECK_OPSIZE (5);
8879                         CHECK_STACK_OVF (1);
8880                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8881                         ip += 5;
8882                         *sp++ = ins;
8883                         break;
8884                 case CEE_LDC_I8:
8885                         CHECK_OPSIZE (9);
8886                         CHECK_STACK_OVF (1);
8887                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8888                         ins->type = STACK_I8;
8889                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8890                         ++ip;
8891                         ins->inst_l = (gint64)read64 (ip);
8892                         MONO_ADD_INS (cfg->cbb, ins);
8893                         ip += 8;
8894                         *sp++ = ins;
8895                         break;
8896                 case CEE_LDC_R4: {
8897                         float *f;
8898                         gboolean use_aotconst = FALSE;
8899
8900 #ifdef TARGET_POWERPC
8901                         /* FIXME: Clean this up */
8902                         if (cfg->compile_aot)
8903                                 use_aotconst = TRUE;
8904 #endif
8905
8906                         /* FIXME: we should really allocate this only late in the compilation process */
8907                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8908                         CHECK_OPSIZE (5);
8909                         CHECK_STACK_OVF (1);
8910
8911                         if (use_aotconst) {
8912                                 MonoInst *cons;
8913                                 int dreg;
8914
8915                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8916
8917                                 dreg = alloc_freg (cfg);
8918                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8919                                 ins->type = cfg->r4_stack_type;
8920                         } else {
8921                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8922                                 ins->type = cfg->r4_stack_type;
8923                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8924                                 ins->inst_p0 = f;
8925                                 MONO_ADD_INS (cfg->cbb, ins);
8926                         }
8927                         ++ip;
8928                         readr4 (ip, f);
8929                         ip += 4;
8930                         *sp++ = ins;
8931                         break;
8932                 }
8933                 case CEE_LDC_R8: {
8934                         double *d;
8935                         gboolean use_aotconst = FALSE;
8936
8937 #ifdef TARGET_POWERPC
8938                         /* FIXME: Clean this up */
8939                         if (cfg->compile_aot)
8940                                 use_aotconst = TRUE;
8941 #endif
8942
8943                         /* FIXME: we should really allocate this only late in the compilation process */
8944                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8945                         CHECK_OPSIZE (9);
8946                         CHECK_STACK_OVF (1);
8947
8948                         if (use_aotconst) {
8949                                 MonoInst *cons;
8950                                 int dreg;
8951
8952                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8953
8954                                 dreg = alloc_freg (cfg);
8955                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8956                                 ins->type = STACK_R8;
8957                         } else {
8958                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8959                                 ins->type = STACK_R8;
8960                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8961                                 ins->inst_p0 = d;
8962                                 MONO_ADD_INS (cfg->cbb, ins);
8963                         }
8964                         ++ip;
8965                         readr8 (ip, d);
8966                         ip += 8;
8967                         *sp++ = ins;
8968                         break;
8969                 }
8970                 case CEE_DUP: {
8971                         MonoInst *temp, *store;
8972                         CHECK_STACK (1);
8973                         CHECK_STACK_OVF (1);
8974                         sp--;
8975                         ins = *sp;
8976
8977                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8978                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8979
8980                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8981                         *sp++ = ins;
8982
8983                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8984                         *sp++ = ins;
8985
8986                         ++ip;
8987                         inline_costs += 2;
8988                         break;
8989                 }
8990                 case CEE_POP:
8991                         CHECK_STACK (1);
8992                         ip++;
8993                         --sp;
8994
8995 #ifdef TARGET_X86
8996                         if (sp [0]->type == STACK_R8)
8997                                 /* we need to pop the value from the x86 FP stack */
8998                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8999 #endif
9000                         break;
9001                 case CEE_JMP: {
9002                         MonoCallInst *call;
9003                         MonoMethodSignature *fsig;
9004                         int i, n;
9005
9006                         INLINE_FAILURE ("jmp");
9007                         GSHAREDVT_FAILURE (*ip);
9008
9009                         CHECK_OPSIZE (5);
9010                         if (stack_start != sp)
9011                                 UNVERIFIED;
9012                         token = read32 (ip + 1);
9013                         /* FIXME: check the signature matches */
9014                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9015                         CHECK_CFG_ERROR;
9016
9017                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9018                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9019
9020                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9021
9022                         fsig = mono_method_signature (cmethod);
9023                         n = fsig->param_count + fsig->hasthis;
9024                         if (cfg->llvm_only) {
9025                                 MonoInst **args;
9026
9027                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9028                                 for (i = 0; i < n; ++i)
9029                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9030                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9031                                 /*
9032                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9033                                  * have to emit a normal return since llvm expects it.
9034                                  */
9035                                 if (cfg->ret)
9036                                         emit_setret (cfg, ins);
9037                                 MONO_INST_NEW (cfg, ins, OP_BR);
9038                                 ins->inst_target_bb = end_bblock;
9039                                 MONO_ADD_INS (cfg->cbb, ins);
9040                                 link_bblock (cfg, cfg->cbb, end_bblock);
9041                                 ip += 5;
9042                                 break;
9043                         } else if (cfg->backend->have_op_tail_call) {
9044                                 /* Handle tail calls similarly to calls */
9045                                 DISABLE_AOT (cfg);
9046
9047                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9048                                 call->method = cmethod;
9049                                 call->tail_call = TRUE;
9050                                 call->signature = mono_method_signature (cmethod);
9051                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9052                                 call->inst.inst_p0 = cmethod;
9053                                 for (i = 0; i < n; ++i)
9054                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9055
9056                                 mono_arch_emit_call (cfg, call);
9057                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9058                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9059                         } else {
9060                                 for (i = 0; i < num_args; ++i)
9061                                         /* Prevent arguments from being optimized away */
9062                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9063
9064                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9065                                 ins = (MonoInst*)call;
9066                                 ins->inst_p0 = cmethod;
9067                                 MONO_ADD_INS (cfg->cbb, ins);
9068                         }
9069
9070                         ip += 5;
9071                         start_new_bblock = 1;
9072                         break;
9073                 }
9074                 case CEE_CALLI: {
9075                         MonoInst *addr;
9076                         MonoMethodSignature *fsig;
9077
9078                         CHECK_OPSIZE (5);
9079                         token = read32 (ip + 1);
9080
9081                         ins = NULL;
9082
9083                         //GSHAREDVT_FAILURE (*ip);
9084                         cmethod = NULL;
9085                         CHECK_STACK (1);
9086                         --sp;
9087                         addr = *sp;
9088                         fsig = mini_get_signature (method, token, generic_context, &cfg->error);
9089                         CHECK_CFG_ERROR;
9090
9091                         if (method->dynamic && fsig->pinvoke) {
9092                                 MonoInst *args [3];
9093
9094                                 /*
9095                                  * This is a call through a function pointer using a pinvoke
9096                                  * signature. Have to create a wrapper and call that instead.
9097                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9098                                  * instead based on the signature.
9099                                  */
9100                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9101                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9102                                 args [2] = addr;
9103                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9104                         }
9105
9106                         n = fsig->param_count + fsig->hasthis;
9107
9108                         CHECK_STACK (n);
9109
9110                         //g_assert (!virtual_ || fsig->hasthis);
9111
9112                         sp -= n;
9113
9114                         inline_costs += 10 * num_calls++;
9115
9116                         /*
9117                          * Making generic calls out of gsharedvt methods.
9118                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9119                          * patching gshared method addresses into a gsharedvt method.
9120                          */
9121                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9122                                 /*
9123                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9124                                  */
9125                                 MonoInst *callee = addr;
9126
9127                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9128                                         /* Not tested */
9129                                         GSHAREDVT_FAILURE (*ip);
9130
9131                                 if (cfg->llvm_only)
9132                                         // FIXME:
9133                                         GSHAREDVT_FAILURE (*ip);
9134
9135                                 addr = emit_get_rgctx_sig (cfg, context_used,
9136                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9137                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9138                                 goto calli_end;
9139                         }
9140
9141                         /* Prevent inlining of methods with indirect calls */
9142                         INLINE_FAILURE ("indirect call");
9143
9144                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9145                                 MonoJumpInfoType info_type;
9146                                 gpointer info_data;
9147
9148                                 /*
9149                                  * Instead of emitting an indirect call, emit a direct call
9150                                  * with the contents of the aotconst as the patch info.
9151                                  */
9152                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9153                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9154                                         info_data = addr->inst_p0;
9155                                 } else {
9156                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9157                                         info_data = addr->inst_right->inst_left;
9158                                 }
9159
9160                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR) {
9161                                         ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR_CALL, info_data, fsig, sp);
9162                                         NULLIFY_INS (addr);
9163                                         goto calli_end;
9164                                 } else if (info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9165                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9166                                         NULLIFY_INS (addr);
9167                                         goto calli_end;
9168                                 }
9169                         }
9170                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9171
9172                         calli_end:
9173
9174                         /* End of call, INS should contain the result of the call, if any */
9175
9176                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9177                                 g_assert (ins);
9178                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9179                         }
9180
9181                         CHECK_CFG_EXCEPTION;
9182
9183                         ip += 5;
9184                         ins_flag = 0;
9185                         constrained_class = NULL;
9186                         break;
9187                 }
9188                 case CEE_CALL:
9189                 case CEE_CALLVIRT: {
9190                         MonoInst *addr = NULL;
9191                         MonoMethodSignature *fsig = NULL;
9192                         int array_rank = 0;
9193                         int virtual_ = *ip == CEE_CALLVIRT;
9194                         gboolean pass_imt_from_rgctx = FALSE;
9195                         MonoInst *imt_arg = NULL;
9196                         MonoInst *keep_this_alive = NULL;
9197                         gboolean pass_vtable = FALSE;
9198                         gboolean pass_mrgctx = FALSE;
9199                         MonoInst *vtable_arg = NULL;
9200                         gboolean check_this = FALSE;
9201                         gboolean supported_tail_call = FALSE;
9202                         gboolean tail_call = FALSE;
9203                         gboolean need_seq_point = FALSE;
9204                         guint32 call_opcode = *ip;
9205                         gboolean emit_widen = TRUE;
9206                         gboolean push_res = TRUE;
9207                         gboolean skip_ret = FALSE;
9208                         gboolean delegate_invoke = FALSE;
9209                         gboolean direct_icall = FALSE;
9210                         gboolean constrained_partial_call = FALSE;
9211                         MonoMethod *cil_method;
9212
9213                         CHECK_OPSIZE (5);
9214                         token = read32 (ip + 1);
9215
9216                         ins = NULL;
9217
9218                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9219                         CHECK_CFG_ERROR;
9220
9221                         cil_method = cmethod;
9222
9223                         if (constrained_class) {
9224                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9225                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9226                                                 g_assert (!cmethod->klass->valuetype);
9227                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9228                                                         constrained_partial_call = TRUE;
9229                                         }
9230                                 }
9231
9232                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9233                                         if (cfg->verbose_level > 2)
9234                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9235                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9236                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9237                                                   cfg->gshared)) {
9238                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9239                                                 CHECK_CFG_ERROR;
9240                                         }
9241                                 } else {
9242                                         if (cfg->verbose_level > 2)
9243                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9244
9245                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9246                                                 /*
9247                                                  * This is needed since get_method_constrained can't find
9248                                                  * the method in klass representing a type var.
9249                                                  * The type var is guaranteed to be a reference type in this
9250                                                  * case.
9251                                                  */
9252                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9253                                                         g_assert (!cmethod->klass->valuetype);
9254                                         } else {
9255                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9256                                                 CHECK_CFG_ERROR;
9257                                         }
9258                                 }
9259                         }
9260
9261                         if (!dont_verify && !cfg->skip_visibility) {
9262                                 MonoMethod *target_method = cil_method;
9263                                 if (method->is_inflated) {
9264                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9265                                         CHECK_CFG_ERROR;
9266                                 }
9267                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9268                                         !mono_method_can_access_method (method, cil_method))
9269                                         emit_method_access_failure (cfg, method, cil_method);
9270                         }
9271
9272                         if (mono_security_core_clr_enabled ())
9273                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9274
9275                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9276                                 /* MS.NET seems to silently convert this to a callvirt */
9277                                 virtual_ = 1;
9278
9279                         {
9280                                 /*
9281                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9282                                  * converts to a callvirt.
9283                                  *
9284                                  * tests/bug-515884.il is an example of this behavior
9285                                  */
9286                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9287                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9288                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9289                                         virtual_ = 1;
9290                         }
9291
9292                         if (!cmethod->klass->inited)
9293                                 if (!mono_class_init (cmethod->klass))
9294                                         TYPE_LOAD_ERROR (cmethod->klass);
9295
9296                         fsig = mono_method_signature (cmethod);
9297                         if (!fsig)
9298                                 LOAD_ERROR;
9299                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9300                                 mini_class_is_system_array (cmethod->klass)) {
9301                                 array_rank = cmethod->klass->rank;
9302                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9303                                 direct_icall = TRUE;
9304                         } else if (fsig->pinvoke) {
9305                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9306                                 fsig = mono_method_signature (wrapper);
9307                         } else if (constrained_class) {
9308                         } else {
9309                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9310                                 CHECK_CFG_ERROR;
9311                         }
9312
9313                         if (cfg->llvm_only && !cfg->method->wrapper_type && (!cmethod || cmethod->is_inflated))
9314                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9315
9316                         /* See code below */
9317                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9318                                 MonoBasicBlock *tbb;
9319
9320                                 GET_BBLOCK (cfg, tbb, ip + 5);
9321                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9322                                         /*
9323                                          * We want to extend the try block to cover the call, but we can't do it if the
9324                                          * call is made directly since its followed by an exception check.
9325                                          */
9326                                         direct_icall = FALSE;
9327                                 }
9328                         }
9329
9330                         mono_save_token_info (cfg, image, token, cil_method);
9331
9332                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9333                                 need_seq_point = TRUE;
9334
9335                         /* Don't support calls made using type arguments for now */
9336                         /*
9337                           if (cfg->gsharedvt) {
9338                           if (mini_is_gsharedvt_signature (fsig))
9339                           GSHAREDVT_FAILURE (*ip);
9340                           }
9341                         */
9342
9343                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9344                                 g_assert_not_reached ();
9345
9346                         n = fsig->param_count + fsig->hasthis;
9347
9348                         if (!cfg->gshared && cmethod->klass->generic_container)
9349                                 UNVERIFIED;
9350
9351                         if (!cfg->gshared)
9352                                 g_assert (!mono_method_check_context_used (cmethod));
9353
9354                         CHECK_STACK (n);
9355
9356                         //g_assert (!virtual_ || fsig->hasthis);
9357
9358                         sp -= n;
9359
9360                         /*
9361                          * We have the `constrained.' prefix opcode.
9362                          */
9363                         if (constrained_class) {
9364                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9365                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9366                                                 /* The 'Own method' case below */
9367                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9368                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9369                                         } else {
9370                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9371                                                 CHECK_CFG_EXCEPTION;
9372                                                 g_assert (ins);
9373                                                 goto call_end;
9374                                         }
9375                                 }
9376
9377                                 if (constrained_partial_call) {
9378                                         gboolean need_box = TRUE;
9379
9380                                         /*
9381                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9382                                          * called method is not known at compile time either. The called method could end up being
9383                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9384                                          * to box the receiver.
9385                                          * A simple solution would be to box always and make a normal virtual call, but that would
9386                                          * be bad performance wise.
9387                                          */
9388                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9389                                                 /*
9390                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9391                                                  */
9392                                                 need_box = FALSE;
9393                                         }
9394
9395                                         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)) {
9396                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9397                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9398                                                 ins->klass = constrained_class;
9399                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9400                                                 CHECK_CFG_EXCEPTION;
9401                                         } else if (need_box) {
9402                                                 MonoInst *box_type;
9403                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9404                                                 MonoInst *nonbox_call;
9405
9406                                                 /*
9407                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9408                                                  * if needed.
9409                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9410                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9411                                                  */
9412                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9413
9414                                                 NEW_BBLOCK (cfg, is_ref_bb);
9415                                                 NEW_BBLOCK (cfg, end_bb);
9416
9417                                                 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);
9418                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9419                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9420
9421                                                 /* Non-ref case */
9422                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9423
9424                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9425
9426                                                 /* Ref case */
9427                                                 MONO_START_BB (cfg, is_ref_bb);
9428                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9429                                                 ins->klass = constrained_class;
9430                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9431                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9432
9433                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9434
9435                                                 MONO_START_BB (cfg, end_bb);
9436                                                 cfg->cbb = end_bb;
9437
9438                                                 nonbox_call->dreg = ins->dreg;
9439                                                 goto call_end;
9440                                         } else {
9441                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9442                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9443                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9444                                                 goto call_end;
9445                                         }
9446                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9447                                         /*
9448                                          * The type parameter is instantiated as a valuetype,
9449                                          * but that type doesn't override the method we're
9450                                          * calling, so we need to box `this'.
9451                                          */
9452                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9453                                         ins->klass = constrained_class;
9454                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9455                                         CHECK_CFG_EXCEPTION;
9456                                 } else if (!constrained_class->valuetype) {
9457                                         int dreg = alloc_ireg_ref (cfg);
9458
9459                                         /*
9460                                          * The type parameter is instantiated as a reference
9461                                          * type.  We have a managed pointer on the stack, so
9462                                          * we need to dereference it here.
9463                                          */
9464                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9465                                         ins->type = STACK_OBJ;
9466                                         sp [0] = ins;
9467                                 } else {
9468                                         if (cmethod->klass->valuetype) {
9469                                                 /* Own method */
9470                                         } else {
9471                                                 /* Interface method */
9472                                                 int ioffset, slot;
9473
9474                                                 mono_class_setup_vtable (constrained_class);
9475                                                 CHECK_TYPELOAD (constrained_class);
9476                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9477                                                 if (ioffset == -1)
9478                                                         TYPE_LOAD_ERROR (constrained_class);
9479                                                 slot = mono_method_get_vtable_slot (cmethod);
9480                                                 if (slot == -1)
9481                                                         TYPE_LOAD_ERROR (cmethod->klass);
9482                                                 cmethod = constrained_class->vtable [ioffset + slot];
9483
9484                                                 if (cmethod->klass == mono_defaults.enum_class) {
9485                                                         /* Enum implements some interfaces, so treat this as the first case */
9486                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9487                                                         ins->klass = constrained_class;
9488                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9489                                                         CHECK_CFG_EXCEPTION;
9490                                                 }
9491                                         }
9492                                         virtual_ = 0;
9493                                 }
9494                                 constrained_class = NULL;
9495                         }
9496
9497                         if (check_call_signature (cfg, fsig, sp))
9498                                 UNVERIFIED;
9499
9500                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9501                                 delegate_invoke = TRUE;
9502
9503                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9504                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9505                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9506                                         emit_widen = FALSE;
9507                                 }
9508
9509                                 goto call_end;
9510                         }
9511
9512                         /*
9513                          * If the callee is a shared method, then its static cctor
9514                          * might not get called after the call was patched.
9515                          */
9516                         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)) {
9517                                 emit_class_init (cfg, cmethod->klass);
9518                                 CHECK_TYPELOAD (cmethod->klass);
9519                         }
9520
9521                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9522
9523                         if (cfg->gshared) {
9524                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9525
9526                                 context_used = mini_method_check_context_used (cfg, cmethod);
9527
9528                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9529                                         /* Generic method interface
9530                                            calls are resolved via a
9531                                            helper function and don't
9532                                            need an imt. */
9533                                         if (!cmethod_context || !cmethod_context->method_inst)
9534                                                 pass_imt_from_rgctx = TRUE;
9535                                 }
9536
9537                                 /*
9538                                  * If a shared method calls another
9539                                  * shared method then the caller must
9540                                  * have a generic sharing context
9541                                  * because the magic trampoline
9542                                  * requires it.  FIXME: We shouldn't
9543                                  * have to force the vtable/mrgctx
9544                                  * variable here.  Instead there
9545                                  * should be a flag in the cfg to
9546                                  * request a generic sharing context.
9547                                  */
9548                                 if (context_used &&
9549                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9550                                         mono_get_vtable_var (cfg);
9551                         }
9552
9553                         if (pass_vtable) {
9554                                 if (context_used) {
9555                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9556                                 } else {
9557                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9558
9559                                         CHECK_TYPELOAD (cmethod->klass);
9560                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9561                                 }
9562                         }
9563
9564                         if (pass_mrgctx) {
9565                                 g_assert (!vtable_arg);
9566
9567                                 if (!cfg->compile_aot) {
9568                                         /*
9569                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9570                                          * for type load errors before.
9571                                          */
9572                                         mono_class_setup_vtable (cmethod->klass);
9573                                         CHECK_TYPELOAD (cmethod->klass);
9574                                 }
9575
9576                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9577
9578                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9579                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9580                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9581                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9582                                         if (virtual_)
9583                                                 check_this = TRUE;
9584                                         virtual_ = 0;
9585                                 }
9586                         }
9587
9588                         if (pass_imt_from_rgctx) {
9589                                 g_assert (!pass_vtable);
9590
9591                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9592                                         cmethod, MONO_RGCTX_INFO_METHOD);
9593                         }
9594
9595                         if (check_this)
9596                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9597
9598                         /* Calling virtual generic methods */
9599                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9600                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9601                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9602                             fsig->generic_param_count &&
9603                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9604                                 !cfg->llvm_only) {
9605                                 MonoInst *this_temp, *this_arg_temp, *store;
9606                                 MonoInst *iargs [4];
9607
9608                                 g_assert (fsig->is_inflated);
9609
9610                                 /* Prevent inlining of methods that contain indirect calls */
9611                                 INLINE_FAILURE ("virtual generic call");
9612
9613                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9614                                         GSHAREDVT_FAILURE (*ip);
9615
9616                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9617                                         g_assert (!imt_arg);
9618                                         if (!context_used)
9619                                                 g_assert (cmethod->is_inflated);
9620                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9621                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9622                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9623                                 } else {
9624                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9625                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9626                                         MONO_ADD_INS (cfg->cbb, store);
9627
9628                                         /* FIXME: This should be a managed pointer */
9629                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9630
9631                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9632                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9633                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9634                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9635                                         addr = mono_emit_jit_icall (cfg,
9636                                                                                                 mono_helper_compile_generic_method, iargs);
9637
9638                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9639
9640                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9641                                 }
9642
9643                                 goto call_end;
9644                         }
9645
9646                         /*
9647                          * Implement a workaround for the inherent races involved in locking:
9648                          * Monitor.Enter ()
9649                          * try {
9650                          * } finally {
9651                          *    Monitor.Exit ()
9652                          * }
9653                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9654                          * try block, the Exit () won't be executed, see:
9655                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9656                          * To work around this, we extend such try blocks to include the last x bytes
9657                          * of the Monitor.Enter () call.
9658                          */
9659                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9660                                 MonoBasicBlock *tbb;
9661
9662                                 GET_BBLOCK (cfg, tbb, ip + 5);
9663                                 /*
9664                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9665                                  * from Monitor.Enter like ArgumentNullException.
9666                                  */
9667                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9668                                         /* Mark this bblock as needing to be extended */
9669                                         tbb->extend_try_block = TRUE;
9670                                 }
9671                         }
9672
9673                         /* Conversion to a JIT intrinsic */
9674                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9675                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9676                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9677                                         emit_widen = FALSE;
9678                                 }
9679                                 goto call_end;
9680                         }
9681                         CHECK_CFG_ERROR;
9682
9683                         /* Inlining */
9684                         if ((cfg->opt & MONO_OPT_INLINE) &&
9685                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9686                             mono_method_check_inlining (cfg, cmethod)) {
9687                                 int costs;
9688                                 gboolean always = FALSE;
9689
9690                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9691                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9692                                         /* Prevent inlining of methods that call wrappers */
9693                                         INLINE_FAILURE ("wrapper call");
9694                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9695                                         always = TRUE;
9696                                 }
9697
9698                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9699                                 if (costs) {
9700                                         cfg->real_offset += 5;
9701
9702                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9703                                                 /* *sp is already set by inline_method */
9704                                                 sp++;
9705                                                 push_res = FALSE;
9706                                         }
9707
9708                                         inline_costs += costs;
9709
9710                                         goto call_end;
9711                                 }
9712                         }
9713
9714                         /* Tail recursion elimination */
9715                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9716                                 gboolean has_vtargs = FALSE;
9717                                 int i;
9718
9719                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9720                                 INLINE_FAILURE ("tail call");
9721
9722                                 /* keep it simple */
9723                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9724                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9725                                                 has_vtargs = TRUE;
9726                                 }
9727
9728                                 if (!has_vtargs) {
9729                                         for (i = 0; i < n; ++i)
9730                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9731                                         MONO_INST_NEW (cfg, ins, OP_BR);
9732                                         MONO_ADD_INS (cfg->cbb, ins);
9733                                         tblock = start_bblock->out_bb [0];
9734                                         link_bblock (cfg, cfg->cbb, tblock);
9735                                         ins->inst_target_bb = tblock;
9736                                         start_new_bblock = 1;
9737
9738                                         /* skip the CEE_RET, too */
9739                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9740                                                 skip_ret = TRUE;
9741                                         push_res = FALSE;
9742                                         goto call_end;
9743                                 }
9744                         }
9745
9746                         inline_costs += 10 * num_calls++;
9747
9748                         /*
9749                          * Making generic calls out of gsharedvt methods.
9750                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9751                          * patching gshared method addresses into a gsharedvt method.
9752                          */
9753                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9754                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9755                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9756                                 MonoRgctxInfoType info_type;
9757
9758                                 if (virtual_) {
9759                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9760                                                 //GSHAREDVT_FAILURE (*ip);
9761                                         // disable for possible remoting calls
9762                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9763                                                 GSHAREDVT_FAILURE (*ip);
9764                                         if (fsig->generic_param_count) {
9765                                                 /* virtual generic call */
9766                                                 g_assert (!imt_arg);
9767                                                 /* Same as the virtual generic case above */
9768                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9769                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9770                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9771                                                 vtable_arg = NULL;
9772                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9773                                                 /* This can happen when we call a fully instantiated iface method */
9774                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9775                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9776                                                 vtable_arg = NULL;
9777                                         }
9778                                 }
9779
9780                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9781                                         keep_this_alive = sp [0];
9782
9783                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9784                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9785                                 else
9786                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9787                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9788
9789                                 if (cfg->llvm_only) {
9790                                         // FIXME: Avoid initializing vtable_arg
9791                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9792                                 } else {
9793                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9794                                 }
9795                                 goto call_end;
9796                         }
9797
9798                         /* Generic sharing */
9799
9800                         /*
9801                          * Use this if the callee is gsharedvt sharable too, since
9802                          * at runtime we might find an instantiation so the call cannot
9803                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9804                          */
9805                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9806                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9807                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9808                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9809                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9810                                 INLINE_FAILURE ("gshared");
9811
9812                                 g_assert (cfg->gshared && cmethod);
9813                                 g_assert (!addr);
9814
9815                                 /*
9816                                  * We are compiling a call to a
9817                                  * generic method from shared code,
9818                                  * which means that we have to look up
9819                                  * the method in the rgctx and do an
9820                                  * indirect call.
9821                                  */
9822                                 if (fsig->hasthis)
9823                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9824
9825                                 if (cfg->llvm_only) {
9826                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9827                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9828                                         else
9829                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9830                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9831                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9832                                 } else {
9833                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9834                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9835                                 }
9836                                 goto call_end;
9837                         }
9838
9839                         /* Direct calls to icalls */
9840                         if (direct_icall) {
9841                                 MonoMethod *wrapper;
9842                                 int costs;
9843
9844                                 /* Inline the wrapper */
9845                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9846
9847                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9848                                 g_assert (costs > 0);
9849                                 cfg->real_offset += 5;
9850
9851                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9852                                         /* *sp is already set by inline_method */
9853                                         sp++;
9854                                         push_res = FALSE;
9855                                 }
9856
9857                                 inline_costs += costs;
9858
9859                                 goto call_end;
9860                         }
9861
9862                         /* Array methods */
9863                         if (array_rank) {
9864                                 MonoInst *addr;
9865
9866                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9867                                         MonoInst *val = sp [fsig->param_count];
9868
9869                                         if (val->type == STACK_OBJ) {
9870                                                 MonoInst *iargs [2];
9871
9872                                                 iargs [0] = sp [0];
9873                                                 iargs [1] = val;
9874
9875                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9876                                         }
9877
9878                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9879                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9880                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9881                                                 emit_write_barrier (cfg, addr, val);
9882                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9883                                                 GSHAREDVT_FAILURE (*ip);
9884                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9885                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9886
9887                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9888                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9889                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9890                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9891                                         CHECK_TYPELOAD (cmethod->klass);
9892
9893                                         readonly = FALSE;
9894                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9895                                         ins = addr;
9896                                 } else {
9897                                         g_assert_not_reached ();
9898                                 }
9899
9900                                 emit_widen = FALSE;
9901                                 goto call_end;
9902                         }
9903
9904                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9905                         if (ins)
9906                                 goto call_end;
9907
9908                         /* Tail prefix / tail call optimization */
9909
9910                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9911                         /* FIXME: runtime generic context pointer for jumps? */
9912                         /* FIXME: handle this for generic sharing eventually */
9913                         if ((ins_flag & MONO_INST_TAILCALL) &&
9914                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9915                                 supported_tail_call = TRUE;
9916
9917                         if (supported_tail_call) {
9918                                 MonoCallInst *call;
9919
9920                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9921                                 INLINE_FAILURE ("tail call");
9922
9923                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9924
9925                                 if (cfg->backend->have_op_tail_call) {
9926                                         /* Handle tail calls similarly to normal calls */
9927                                         tail_call = TRUE;
9928                                 } else {
9929                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9930
9931                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9932                                         call->tail_call = TRUE;
9933                                         call->method = cmethod;
9934                                         call->signature = mono_method_signature (cmethod);
9935
9936                                         /*
9937                                          * We implement tail calls by storing the actual arguments into the
9938                                          * argument variables, then emitting a CEE_JMP.
9939                                          */
9940                                         for (i = 0; i < n; ++i) {
9941                                                 /* Prevent argument from being register allocated */
9942                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9943                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9944                                         }
9945                                         ins = (MonoInst*)call;
9946                                         ins->inst_p0 = cmethod;
9947                                         ins->inst_p1 = arg_array [0];
9948                                         MONO_ADD_INS (cfg->cbb, ins);
9949                                         link_bblock (cfg, cfg->cbb, end_bblock);
9950                                         start_new_bblock = 1;
9951
9952                                         // FIXME: Eliminate unreachable epilogs
9953
9954                                         /*
9955                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9956                                          * only reachable from this call.
9957                                          */
9958                                         GET_BBLOCK (cfg, tblock, ip + 5);
9959                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9960                                                 skip_ret = TRUE;
9961                                         push_res = FALSE;
9962
9963                                         goto call_end;
9964                                 }
9965                         }
9966
9967                         /*
9968                          * Synchronized wrappers.
9969                          * Its hard to determine where to replace a method with its synchronized
9970                          * wrapper without causing an infinite recursion. The current solution is
9971                          * to add the synchronized wrapper in the trampolines, and to
9972                          * change the called method to a dummy wrapper, and resolve that wrapper
9973                          * to the real method in mono_jit_compile_method ().
9974                          */
9975                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9976                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9977                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9978                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9979                         }
9980
9981                         /*
9982                          * Virtual calls in llvm-only mode.
9983                          */
9984                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9985                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9986                                 goto call_end;
9987                         }
9988
9989                         /* Common call */
9990                         INLINE_FAILURE ("call");
9991                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9992                                                                                           imt_arg, vtable_arg);
9993
9994                         if (tail_call && !cfg->llvm_only) {
9995                                 link_bblock (cfg, cfg->cbb, end_bblock);
9996                                 start_new_bblock = 1;
9997
9998                                 // FIXME: Eliminate unreachable epilogs
9999
10000                                 /*
10001                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10002                                  * only reachable from this call.
10003                                  */
10004                                 GET_BBLOCK (cfg, tblock, ip + 5);
10005                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10006                                         skip_ret = TRUE;
10007                                 push_res = FALSE;
10008                         }
10009
10010                         call_end:
10011
10012                         /* End of call, INS should contain the result of the call, if any */
10013
10014                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10015                                 g_assert (ins);
10016                                 if (emit_widen)
10017                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10018                                 else
10019                                         *sp++ = ins;
10020                         }
10021
10022                         if (keep_this_alive) {
10023                                 MonoInst *dummy_use;
10024
10025                                 /* See mono_emit_method_call_full () */
10026                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10027                         }
10028
10029                         CHECK_CFG_EXCEPTION;
10030
10031                         ip += 5;
10032                         if (skip_ret) {
10033                                 g_assert (*ip == CEE_RET);
10034                                 ip += 1;
10035                         }
10036                         ins_flag = 0;
10037                         constrained_class = NULL;
10038                         if (need_seq_point)
10039                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10040                         break;
10041                 }
10042                 case CEE_RET:
10043                         if (cfg->method != method) {
10044                                 /* return from inlined method */
10045                                 /*
10046                                  * If in_count == 0, that means the ret is unreachable due to
10047                                  * being preceeded by a throw. In that case, inline_method () will
10048                                  * handle setting the return value
10049                                  * (test case: test_0_inline_throw ()).
10050                                  */
10051                                 if (return_var && cfg->cbb->in_count) {
10052                                         MonoType *ret_type = mono_method_signature (method)->ret;
10053
10054                                         MonoInst *store;
10055                                         CHECK_STACK (1);
10056                                         --sp;
10057
10058                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10059                                                 UNVERIFIED;
10060
10061                                         //g_assert (returnvar != -1);
10062                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10063                                         cfg->ret_var_set = TRUE;
10064                                 }
10065                         } else {
10066                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10067
10068                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10069                                         emit_pop_lmf (cfg);
10070
10071                                 if (cfg->ret) {
10072                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10073
10074                                         if (seq_points && !sym_seq_points) {
10075                                                 /*
10076                                                  * Place a seq point here too even through the IL stack is not
10077                                                  * empty, so a step over on
10078                                                  * call <FOO>
10079                                                  * ret
10080                                                  * will work correctly.
10081                                                  */
10082                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10083                                                 MONO_ADD_INS (cfg->cbb, ins);
10084                                         }
10085
10086                                         g_assert (!return_var);
10087                                         CHECK_STACK (1);
10088                                         --sp;
10089
10090                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10091                                                 UNVERIFIED;
10092
10093                                         emit_setret (cfg, *sp);
10094                                 }
10095                         }
10096                         if (sp != stack_start)
10097                                 UNVERIFIED;
10098                         MONO_INST_NEW (cfg, ins, OP_BR);
10099                         ip++;
10100                         ins->inst_target_bb = end_bblock;
10101                         MONO_ADD_INS (cfg->cbb, ins);
10102                         link_bblock (cfg, cfg->cbb, end_bblock);
10103                         start_new_bblock = 1;
10104                         break;
10105                 case CEE_BR_S:
10106                         CHECK_OPSIZE (2);
10107                         MONO_INST_NEW (cfg, ins, OP_BR);
10108                         ip++;
10109                         target = ip + 1 + (signed char)(*ip);
10110                         ++ip;
10111                         GET_BBLOCK (cfg, tblock, target);
10112                         link_bblock (cfg, cfg->cbb, tblock);
10113                         ins->inst_target_bb = tblock;
10114                         if (sp != stack_start) {
10115                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10116                                 sp = stack_start;
10117                                 CHECK_UNVERIFIABLE (cfg);
10118                         }
10119                         MONO_ADD_INS (cfg->cbb, ins);
10120                         start_new_bblock = 1;
10121                         inline_costs += BRANCH_COST;
10122                         break;
10123                 case CEE_BEQ_S:
10124                 case CEE_BGE_S:
10125                 case CEE_BGT_S:
10126                 case CEE_BLE_S:
10127                 case CEE_BLT_S:
10128                 case CEE_BNE_UN_S:
10129                 case CEE_BGE_UN_S:
10130                 case CEE_BGT_UN_S:
10131                 case CEE_BLE_UN_S:
10132                 case CEE_BLT_UN_S:
10133                         CHECK_OPSIZE (2);
10134                         CHECK_STACK (2);
10135                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10136                         ip++;
10137                         target = ip + 1 + *(signed char*)ip;
10138                         ip++;
10139
10140                         ADD_BINCOND (NULL);
10141
10142                         sp = stack_start;
10143                         inline_costs += BRANCH_COST;
10144                         break;
10145                 case CEE_BR:
10146                         CHECK_OPSIZE (5);
10147                         MONO_INST_NEW (cfg, ins, OP_BR);
10148                         ip++;
10149
10150                         target = ip + 4 + (gint32)read32(ip);
10151                         ip += 4;
10152                         GET_BBLOCK (cfg, tblock, target);
10153                         link_bblock (cfg, cfg->cbb, tblock);
10154                         ins->inst_target_bb = tblock;
10155                         if (sp != stack_start) {
10156                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10157                                 sp = stack_start;
10158                                 CHECK_UNVERIFIABLE (cfg);
10159                         }
10160
10161                         MONO_ADD_INS (cfg->cbb, ins);
10162
10163                         start_new_bblock = 1;
10164                         inline_costs += BRANCH_COST;
10165                         break;
10166                 case CEE_BRFALSE_S:
10167                 case CEE_BRTRUE_S:
10168                 case CEE_BRFALSE:
10169                 case CEE_BRTRUE: {
10170                         MonoInst *cmp;
10171                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10172                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10173                         guint32 opsize = is_short ? 1 : 4;
10174
10175                         CHECK_OPSIZE (opsize);
10176                         CHECK_STACK (1);
10177                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10178                                 UNVERIFIED;
10179                         ip ++;
10180                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10181                         ip += opsize;
10182
10183                         sp--;
10184
10185                         GET_BBLOCK (cfg, tblock, target);
10186                         link_bblock (cfg, cfg->cbb, tblock);
10187                         GET_BBLOCK (cfg, tblock, ip);
10188                         link_bblock (cfg, cfg->cbb, tblock);
10189
10190                         if (sp != stack_start) {
10191                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10192                                 CHECK_UNVERIFIABLE (cfg);
10193                         }
10194
10195                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10196                         cmp->sreg1 = sp [0]->dreg;
10197                         type_from_op (cfg, cmp, sp [0], NULL);
10198                         CHECK_TYPE (cmp);
10199
10200 #if SIZEOF_REGISTER == 4
10201                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10202                                 /* Convert it to OP_LCOMPARE */
10203                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10204                                 ins->type = STACK_I8;
10205                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10206                                 ins->inst_l = 0;
10207                                 MONO_ADD_INS (cfg->cbb, ins);
10208                                 cmp->opcode = OP_LCOMPARE;
10209                                 cmp->sreg2 = ins->dreg;
10210                         }
10211 #endif
10212                         MONO_ADD_INS (cfg->cbb, cmp);
10213
10214                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10215                         type_from_op (cfg, ins, sp [0], NULL);
10216                         MONO_ADD_INS (cfg->cbb, ins);
10217                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10218                         GET_BBLOCK (cfg, tblock, target);
10219                         ins->inst_true_bb = tblock;
10220                         GET_BBLOCK (cfg, tblock, ip);
10221                         ins->inst_false_bb = tblock;
10222                         start_new_bblock = 2;
10223
10224                         sp = stack_start;
10225                         inline_costs += BRANCH_COST;
10226                         break;
10227                 }
10228                 case CEE_BEQ:
10229                 case CEE_BGE:
10230                 case CEE_BGT:
10231                 case CEE_BLE:
10232                 case CEE_BLT:
10233                 case CEE_BNE_UN:
10234                 case CEE_BGE_UN:
10235                 case CEE_BGT_UN:
10236                 case CEE_BLE_UN:
10237                 case CEE_BLT_UN:
10238                         CHECK_OPSIZE (5);
10239                         CHECK_STACK (2);
10240                         MONO_INST_NEW (cfg, ins, *ip);
10241                         ip++;
10242                         target = ip + 4 + (gint32)read32(ip);
10243                         ip += 4;
10244
10245                         ADD_BINCOND (NULL);
10246
10247                         sp = stack_start;
10248                         inline_costs += BRANCH_COST;
10249                         break;
10250                 case CEE_SWITCH: {
10251                         MonoInst *src1;
10252                         MonoBasicBlock **targets;
10253                         MonoBasicBlock *default_bblock;
10254                         MonoJumpInfoBBTable *table;
10255                         int offset_reg = alloc_preg (cfg);
10256                         int target_reg = alloc_preg (cfg);
10257                         int table_reg = alloc_preg (cfg);
10258                         int sum_reg = alloc_preg (cfg);
10259                         gboolean use_op_switch;
10260
10261                         CHECK_OPSIZE (5);
10262                         CHECK_STACK (1);
10263                         n = read32 (ip + 1);
10264                         --sp;
10265                         src1 = sp [0];
10266                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10267                                 UNVERIFIED;
10268
10269                         ip += 5;
10270                         CHECK_OPSIZE (n * sizeof (guint32));
10271                         target = ip + n * sizeof (guint32);
10272
10273                         GET_BBLOCK (cfg, default_bblock, target);
10274                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10275
10276                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10277                         for (i = 0; i < n; ++i) {
10278                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10279                                 targets [i] = tblock;
10280                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10281                                 ip += 4;
10282                         }
10283
10284                         if (sp != stack_start) {
10285                                 /*
10286                                  * Link the current bb with the targets as well, so handle_stack_args
10287                                  * will set their in_stack correctly.
10288                                  */
10289                                 link_bblock (cfg, cfg->cbb, default_bblock);
10290                                 for (i = 0; i < n; ++i)
10291                                         link_bblock (cfg, cfg->cbb, targets [i]);
10292
10293                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10294                                 sp = stack_start;
10295                                 CHECK_UNVERIFIABLE (cfg);
10296
10297                                 /* Undo the links */
10298                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10299                                 for (i = 0; i < n; ++i)
10300                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10301                         }
10302
10303                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10304                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10305
10306                         for (i = 0; i < n; ++i)
10307                                 link_bblock (cfg, cfg->cbb, targets [i]);
10308
10309                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10310                         table->table = targets;
10311                         table->table_size = n;
10312
10313                         use_op_switch = FALSE;
10314 #ifdef TARGET_ARM
10315                         /* ARM implements SWITCH statements differently */
10316                         /* FIXME: Make it use the generic implementation */
10317                         if (!cfg->compile_aot)
10318                                 use_op_switch = TRUE;
10319 #endif
10320
10321                         if (COMPILE_LLVM (cfg))
10322                                 use_op_switch = TRUE;
10323
10324                         cfg->cbb->has_jump_table = 1;
10325
10326                         if (use_op_switch) {
10327                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10328                                 ins->sreg1 = src1->dreg;
10329                                 ins->inst_p0 = table;
10330                                 ins->inst_many_bb = targets;
10331                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10332                                 MONO_ADD_INS (cfg->cbb, ins);
10333                         } else {
10334                                 if (sizeof (gpointer) == 8)
10335                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10336                                 else
10337                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10338
10339 #if SIZEOF_REGISTER == 8
10340                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10341                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10342 #endif
10343
10344                                 if (cfg->compile_aot) {
10345                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10346                                 } else {
10347                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10348                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10349                                         ins->inst_p0 = table;
10350                                         ins->dreg = table_reg;
10351                                         MONO_ADD_INS (cfg->cbb, ins);
10352                                 }
10353
10354                                 /* FIXME: Use load_memindex */
10355                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10356                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10357                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10358                         }
10359                         start_new_bblock = 1;
10360                         inline_costs += (BRANCH_COST * 2);
10361                         break;
10362                 }
10363                 case CEE_LDIND_I1:
10364                 case CEE_LDIND_U1:
10365                 case CEE_LDIND_I2:
10366                 case CEE_LDIND_U2:
10367                 case CEE_LDIND_I4:
10368                 case CEE_LDIND_U4:
10369                 case CEE_LDIND_I8:
10370                 case CEE_LDIND_I:
10371                 case CEE_LDIND_R4:
10372                 case CEE_LDIND_R8:
10373                 case CEE_LDIND_REF:
10374                         CHECK_STACK (1);
10375                         --sp;
10376
10377                         switch (*ip) {
10378                         case CEE_LDIND_R4:
10379                         case CEE_LDIND_R8:
10380                                 dreg = alloc_freg (cfg);
10381                                 break;
10382                         case CEE_LDIND_I8:
10383                                 dreg = alloc_lreg (cfg);
10384                                 break;
10385                         case CEE_LDIND_REF:
10386                                 dreg = alloc_ireg_ref (cfg);
10387                                 break;
10388                         default:
10389                                 dreg = alloc_preg (cfg);
10390                         }
10391
10392                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10393                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10394                         if (*ip == CEE_LDIND_R4)
10395                                 ins->type = cfg->r4_stack_type;
10396                         ins->flags |= ins_flag;
10397                         MONO_ADD_INS (cfg->cbb, ins);
10398                         *sp++ = ins;
10399                         if (ins_flag & MONO_INST_VOLATILE) {
10400                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10401                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10402                         }
10403                         ins_flag = 0;
10404                         ++ip;
10405                         break;
10406                 case CEE_STIND_REF:
10407                 case CEE_STIND_I1:
10408                 case CEE_STIND_I2:
10409                 case CEE_STIND_I4:
10410                 case CEE_STIND_I8:
10411                 case CEE_STIND_R4:
10412                 case CEE_STIND_R8:
10413                 case CEE_STIND_I:
10414                         CHECK_STACK (2);
10415                         sp -= 2;
10416
10417                         if (ins_flag & MONO_INST_VOLATILE) {
10418                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10419                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10420                         }
10421
10422                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10423                         ins->flags |= ins_flag;
10424                         ins_flag = 0;
10425
10426                         MONO_ADD_INS (cfg->cbb, ins);
10427
10428                         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)))
10429                                 emit_write_barrier (cfg, sp [0], sp [1]);
10430
10431                         inline_costs += 1;
10432                         ++ip;
10433                         break;
10434
10435                 case CEE_MUL:
10436                         CHECK_STACK (2);
10437
10438                         MONO_INST_NEW (cfg, ins, (*ip));
10439                         sp -= 2;
10440                         ins->sreg1 = sp [0]->dreg;
10441                         ins->sreg2 = sp [1]->dreg;
10442                         type_from_op (cfg, ins, sp [0], sp [1]);
10443                         CHECK_TYPE (ins);
10444                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10445
10446                         /* Use the immediate opcodes if possible */
10447                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10448                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10449                                 if (imm_opcode != -1) {
10450                                         ins->opcode = imm_opcode;
10451                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10452                                         ins->sreg2 = -1;
10453
10454                                         NULLIFY_INS (sp [1]);
10455                                 }
10456                         }
10457
10458                         MONO_ADD_INS ((cfg)->cbb, (ins));
10459
10460                         *sp++ = mono_decompose_opcode (cfg, ins);
10461                         ip++;
10462                         break;
10463                 case CEE_ADD:
10464                 case CEE_SUB:
10465                 case CEE_DIV:
10466                 case CEE_DIV_UN:
10467                 case CEE_REM:
10468                 case CEE_REM_UN:
10469                 case CEE_AND:
10470                 case CEE_OR:
10471                 case CEE_XOR:
10472                 case CEE_SHL:
10473                 case CEE_SHR:
10474                 case CEE_SHR_UN:
10475                         CHECK_STACK (2);
10476
10477                         MONO_INST_NEW (cfg, ins, (*ip));
10478                         sp -= 2;
10479                         ins->sreg1 = sp [0]->dreg;
10480                         ins->sreg2 = sp [1]->dreg;
10481                         type_from_op (cfg, ins, sp [0], sp [1]);
10482                         CHECK_TYPE (ins);
10483                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10484                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10485
10486                         /* FIXME: Pass opcode to is_inst_imm */
10487
10488                         /* Use the immediate opcodes if possible */
10489                         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)) {
10490                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10491                                 if (imm_opcode != -1) {
10492                                         ins->opcode = imm_opcode;
10493                                         if (sp [1]->opcode == OP_I8CONST) {
10494 #if SIZEOF_REGISTER == 8
10495                                                 ins->inst_imm = sp [1]->inst_l;
10496 #else
10497                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10498                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10499 #endif
10500                                         }
10501                                         else
10502                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10503                                         ins->sreg2 = -1;
10504
10505                                         /* Might be followed by an instruction added by add_widen_op */
10506                                         if (sp [1]->next == NULL)
10507                                                 NULLIFY_INS (sp [1]);
10508                                 }
10509                         }
10510                         MONO_ADD_INS ((cfg)->cbb, (ins));
10511
10512                         *sp++ = mono_decompose_opcode (cfg, ins);
10513                         ip++;
10514                         break;
10515                 case CEE_NEG:
10516                 case CEE_NOT:
10517                 case CEE_CONV_I1:
10518                 case CEE_CONV_I2:
10519                 case CEE_CONV_I4:
10520                 case CEE_CONV_R4:
10521                 case CEE_CONV_R8:
10522                 case CEE_CONV_U4:
10523                 case CEE_CONV_I8:
10524                 case CEE_CONV_U8:
10525                 case CEE_CONV_OVF_I8:
10526                 case CEE_CONV_OVF_U8:
10527                 case CEE_CONV_R_UN:
10528                         CHECK_STACK (1);
10529
10530                         /* Special case this earlier so we have long constants in the IR */
10531                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10532                                 int data = sp [-1]->inst_c0;
10533                                 sp [-1]->opcode = OP_I8CONST;
10534                                 sp [-1]->type = STACK_I8;
10535 #if SIZEOF_REGISTER == 8
10536                                 if ((*ip) == CEE_CONV_U8)
10537                                         sp [-1]->inst_c0 = (guint32)data;
10538                                 else
10539                                         sp [-1]->inst_c0 = data;
10540 #else
10541                                 sp [-1]->inst_ls_word = data;
10542                                 if ((*ip) == CEE_CONV_U8)
10543                                         sp [-1]->inst_ms_word = 0;
10544                                 else
10545                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10546 #endif
10547                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10548                         }
10549                         else {
10550                                 ADD_UNOP (*ip);
10551                         }
10552                         ip++;
10553                         break;
10554                 case CEE_CONV_OVF_I4:
10555                 case CEE_CONV_OVF_I1:
10556                 case CEE_CONV_OVF_I2:
10557                 case CEE_CONV_OVF_I:
10558                 case CEE_CONV_OVF_U:
10559                         CHECK_STACK (1);
10560
10561                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10562                                 ADD_UNOP (CEE_CONV_OVF_I8);
10563                                 ADD_UNOP (*ip);
10564                         } else {
10565                                 ADD_UNOP (*ip);
10566                         }
10567                         ip++;
10568                         break;
10569                 case CEE_CONV_OVF_U1:
10570                 case CEE_CONV_OVF_U2:
10571                 case CEE_CONV_OVF_U4:
10572                         CHECK_STACK (1);
10573
10574                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10575                                 ADD_UNOP (CEE_CONV_OVF_U8);
10576                                 ADD_UNOP (*ip);
10577                         } else {
10578                                 ADD_UNOP (*ip);
10579                         }
10580                         ip++;
10581                         break;
10582                 case CEE_CONV_OVF_I1_UN:
10583                 case CEE_CONV_OVF_I2_UN:
10584                 case CEE_CONV_OVF_I4_UN:
10585                 case CEE_CONV_OVF_I8_UN:
10586                 case CEE_CONV_OVF_U1_UN:
10587                 case CEE_CONV_OVF_U2_UN:
10588                 case CEE_CONV_OVF_U4_UN:
10589                 case CEE_CONV_OVF_U8_UN:
10590                 case CEE_CONV_OVF_I_UN:
10591                 case CEE_CONV_OVF_U_UN:
10592                 case CEE_CONV_U2:
10593                 case CEE_CONV_U1:
10594                 case CEE_CONV_I:
10595                 case CEE_CONV_U:
10596                         CHECK_STACK (1);
10597                         ADD_UNOP (*ip);
10598                         CHECK_CFG_EXCEPTION;
10599                         ip++;
10600                         break;
10601                 case CEE_ADD_OVF:
10602                 case CEE_ADD_OVF_UN:
10603                 case CEE_MUL_OVF:
10604                 case CEE_MUL_OVF_UN:
10605                 case CEE_SUB_OVF:
10606                 case CEE_SUB_OVF_UN:
10607                         CHECK_STACK (2);
10608                         ADD_BINOP (*ip);
10609                         ip++;
10610                         break;
10611                 case CEE_CPOBJ:
10612                         GSHAREDVT_FAILURE (*ip);
10613                         CHECK_OPSIZE (5);
10614                         CHECK_STACK (2);
10615                         token = read32 (ip + 1);
10616                         klass = mini_get_class (method, token, generic_context);
10617                         CHECK_TYPELOAD (klass);
10618                         sp -= 2;
10619                         if (generic_class_is_reference_type (cfg, klass)) {
10620                                 MonoInst *store, *load;
10621                                 int dreg = alloc_ireg_ref (cfg);
10622
10623                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10624                                 load->flags |= ins_flag;
10625                                 MONO_ADD_INS (cfg->cbb, load);
10626
10627                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10628                                 store->flags |= ins_flag;
10629                                 MONO_ADD_INS (cfg->cbb, store);
10630
10631                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10632                                         emit_write_barrier (cfg, sp [0], sp [1]);
10633                         } else {
10634                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10635                         }
10636                         ins_flag = 0;
10637                         ip += 5;
10638                         break;
10639                 case CEE_LDOBJ: {
10640                         int loc_index = -1;
10641                         int stloc_len = 0;
10642
10643                         CHECK_OPSIZE (5);
10644                         CHECK_STACK (1);
10645                         --sp;
10646                         token = read32 (ip + 1);
10647                         klass = mini_get_class (method, token, generic_context);
10648                         CHECK_TYPELOAD (klass);
10649
10650                         /* Optimize the common ldobj+stloc combination */
10651                         switch (ip [5]) {
10652                         case CEE_STLOC_S:
10653                                 loc_index = ip [6];
10654                                 stloc_len = 2;
10655                                 break;
10656                         case CEE_STLOC_0:
10657                         case CEE_STLOC_1:
10658                         case CEE_STLOC_2:
10659                         case CEE_STLOC_3:
10660                                 loc_index = ip [5] - CEE_STLOC_0;
10661                                 stloc_len = 1;
10662                                 break;
10663                         default:
10664                                 break;
10665                         }
10666
10667                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10668                                 CHECK_LOCAL (loc_index);
10669
10670                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10671                                 ins->dreg = cfg->locals [loc_index]->dreg;
10672                                 ins->flags |= ins_flag;
10673                                 ip += 5;
10674                                 ip += stloc_len;
10675                                 if (ins_flag & MONO_INST_VOLATILE) {
10676                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10677                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10678                                 }
10679                                 ins_flag = 0;
10680                                 break;
10681                         }
10682
10683                         /* Optimize the ldobj+stobj combination */
10684                         /* The reference case ends up being a load+store anyway */
10685                         /* Skip this if the operation is volatile. */
10686                         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)) {
10687                                 CHECK_STACK (1);
10688
10689                                 sp --;
10690
10691                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10692
10693                                 ip += 5 + 5;
10694                                 ins_flag = 0;
10695                                 break;
10696                         }
10697
10698                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10699                         ins->flags |= ins_flag;
10700                         *sp++ = ins;
10701
10702                         if (ins_flag & MONO_INST_VOLATILE) {
10703                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10704                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10705                         }
10706
10707                         ip += 5;
10708                         ins_flag = 0;
10709                         inline_costs += 1;
10710                         break;
10711                 }
10712                 case CEE_LDSTR:
10713                         CHECK_STACK_OVF (1);
10714                         CHECK_OPSIZE (5);
10715                         n = read32 (ip + 1);
10716
10717                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10718                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10719                                 ins->type = STACK_OBJ;
10720                                 *sp = ins;
10721                         }
10722                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10723                                 MonoInst *iargs [1];
10724                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10725
10726                                 if (cfg->compile_aot)
10727                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10728                                 else
10729                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10730                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10731                         } else {
10732                                 if (cfg->opt & MONO_OPT_SHARED) {
10733                                         MonoInst *iargs [3];
10734
10735                                         if (cfg->compile_aot) {
10736                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10737                                         }
10738                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10739                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10740                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10741                                         *sp = mono_emit_jit_icall (cfg, ves_icall_mono_ldstr, iargs);
10742                                         mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10743                                         CHECK_CFG_ERROR;
10744                                 } else {
10745                                         if (cfg->cbb->out_of_line) {
10746                                                 MonoInst *iargs [2];
10747
10748                                                 if (image == mono_defaults.corlib) {
10749                                                         /*
10750                                                          * Avoid relocations in AOT and save some space by using a
10751                                                          * version of helper_ldstr specialized to mscorlib.
10752                                                          */
10753                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10754                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10755                                                 } else {
10756                                                         /* Avoid creating the string object */
10757                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10758                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10759                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10760                                                 }
10761                                         }
10762                                         else
10763                                         if (cfg->compile_aot) {
10764                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10765                                                 *sp = ins;
10766                                                 MONO_ADD_INS (cfg->cbb, ins);
10767                                         }
10768                                         else {
10769                                                 NEW_PCONST (cfg, ins, NULL);
10770                                                 ins->type = STACK_OBJ;
10771                                                 ins->inst_p0 = mono_ldstr_checked (cfg->domain, image, mono_metadata_token_index (n), &cfg->error);
10772                                                 CHECK_CFG_ERROR;
10773
10774                                                 if (!ins->inst_p0)
10775                                                         OUT_OF_MEMORY_FAILURE;
10776
10777                                                 *sp = ins;
10778                                                 MONO_ADD_INS (cfg->cbb, ins);
10779                                         }
10780                                 }
10781                         }
10782
10783                         sp++;
10784                         ip += 5;
10785                         break;
10786                 case CEE_NEWOBJ: {
10787                         MonoInst *iargs [2];
10788                         MonoMethodSignature *fsig;
10789                         MonoInst this_ins;
10790                         MonoInst *alloc;
10791                         MonoInst *vtable_arg = NULL;
10792
10793                         CHECK_OPSIZE (5);
10794                         token = read32 (ip + 1);
10795                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10796                         CHECK_CFG_ERROR;
10797
10798                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10799                         CHECK_CFG_ERROR;
10800
10801                         mono_save_token_info (cfg, image, token, cmethod);
10802
10803                         if (!mono_class_init (cmethod->klass))
10804                                 TYPE_LOAD_ERROR (cmethod->klass);
10805
10806                         context_used = mini_method_check_context_used (cfg, cmethod);
10807
10808                         if (mono_security_core_clr_enabled ())
10809                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10810
10811                         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)) {
10812                                 emit_class_init (cfg, cmethod->klass);
10813                                 CHECK_TYPELOAD (cmethod->klass);
10814                         }
10815
10816                         /*
10817                         if (cfg->gsharedvt) {
10818                                 if (mini_is_gsharedvt_variable_signature (sig))
10819                                         GSHAREDVT_FAILURE (*ip);
10820                         }
10821                         */
10822
10823                         n = fsig->param_count;
10824                         CHECK_STACK (n);
10825
10826                         /*
10827                          * Generate smaller code for the common newobj <exception> instruction in
10828                          * argument checking code.
10829                          */
10830                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10831                                 is_exception_class (cmethod->klass) && n <= 2 &&
10832                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10833                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10834                                 MonoInst *iargs [3];
10835
10836                                 sp -= n;
10837
10838                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10839                                 switch (n) {
10840                                 case 0:
10841                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10842                                         break;
10843                                 case 1:
10844                                         iargs [1] = sp [0];
10845                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10846                                         break;
10847                                 case 2:
10848                                         iargs [1] = sp [0];
10849                                         iargs [2] = sp [1];
10850                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10851                                         break;
10852                                 default:
10853                                         g_assert_not_reached ();
10854                                 }
10855
10856                                 ip += 5;
10857                                 inline_costs += 5;
10858                                 break;
10859                         }
10860
10861                         /* move the args to allow room for 'this' in the first position */
10862                         while (n--) {
10863                                 --sp;
10864                                 sp [1] = sp [0];
10865                         }
10866
10867                         /* check_call_signature () requires sp[0] to be set */
10868                         this_ins.type = STACK_OBJ;
10869                         sp [0] = &this_ins;
10870                         if (check_call_signature (cfg, fsig, sp))
10871                                 UNVERIFIED;
10872
10873                         iargs [0] = NULL;
10874
10875                         if (mini_class_is_system_array (cmethod->klass)) {
10876                                 *sp = emit_get_rgctx_method (cfg, context_used,
10877                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10878
10879                                 /* Avoid varargs in the common case */
10880                                 if (fsig->param_count == 1)
10881                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10882                                 else if (fsig->param_count == 2)
10883                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10884                                 else if (fsig->param_count == 3)
10885                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10886                                 else if (fsig->param_count == 4)
10887                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10888                                 else
10889                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10890                         } else if (cmethod->string_ctor) {
10891                                 g_assert (!context_used);
10892                                 g_assert (!vtable_arg);
10893                                 /* we simply pass a null pointer */
10894                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10895                                 /* now call the string ctor */
10896                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10897                         } else {
10898                                 if (cmethod->klass->valuetype) {
10899                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10900                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10901                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10902
10903                                         alloc = NULL;
10904
10905                                         /*
10906                                          * The code generated by mini_emit_virtual_call () expects
10907                                          * iargs [0] to be a boxed instance, but luckily the vcall
10908                                          * will be transformed into a normal call there.
10909                                          */
10910                                 } else if (context_used) {
10911                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10912                                         *sp = alloc;
10913                                 } else {
10914                                         MonoVTable *vtable = NULL;
10915
10916                                         if (!cfg->compile_aot)
10917                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10918                                         CHECK_TYPELOAD (cmethod->klass);
10919
10920                                         /*
10921                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10922                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10923                                          * As a workaround, we call class cctors before allocating objects.
10924                                          */
10925                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10926                                                 emit_class_init (cfg, cmethod->klass);
10927                                                 if (cfg->verbose_level > 2)
10928                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10929                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10930                                         }
10931
10932                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10933                                         *sp = alloc;
10934                                 }
10935                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10936
10937                                 if (alloc)
10938                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10939
10940                                 /* Now call the actual ctor */
10941                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10942                                 CHECK_CFG_EXCEPTION;
10943                         }
10944
10945                         if (alloc == NULL) {
10946                                 /* Valuetype */
10947                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10948                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10949                                 *sp++= ins;
10950                         } else {
10951                                 *sp++ = alloc;
10952                         }
10953
10954                         ip += 5;
10955                         inline_costs += 5;
10956                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10957                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10958                         break;
10959                 }
10960                 case CEE_CASTCLASS:
10961                         CHECK_STACK (1);
10962                         --sp;
10963                         CHECK_OPSIZE (5);
10964                         token = read32 (ip + 1);
10965                         klass = mini_get_class (method, token, generic_context);
10966                         CHECK_TYPELOAD (klass);
10967                         if (sp [0]->type != STACK_OBJ)
10968                                 UNVERIFIED;
10969
10970                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10971                         CHECK_CFG_EXCEPTION;
10972
10973                         *sp ++ = ins;
10974                         ip += 5;
10975                         break;
10976                 case CEE_ISINST: {
10977                         CHECK_STACK (1);
10978                         --sp;
10979                         CHECK_OPSIZE (5);
10980                         token = read32 (ip + 1);
10981                         klass = mini_get_class (method, token, generic_context);
10982                         CHECK_TYPELOAD (klass);
10983                         if (sp [0]->type != STACK_OBJ)
10984                                 UNVERIFIED;
10985
10986                         context_used = mini_class_check_context_used (cfg, klass);
10987
10988                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10989                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10990                                 MonoInst *args [3];
10991                                 int idx;
10992
10993                                 /* obj */
10994                                 args [0] = *sp;
10995
10996                                 /* klass */
10997                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10998
10999                                 /* inline cache*/
11000                                 idx = get_castclass_cache_idx (cfg);
11001                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
11002
11003                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
11004                                 ip += 5;
11005                                 inline_costs += 2;
11006                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11007                                 MonoMethod *mono_isinst;
11008                                 MonoInst *iargs [1];
11009                                 int costs;
11010
11011                                 mono_isinst = mono_marshal_get_isinst (klass);
11012                                 iargs [0] = sp [0];
11013
11014                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11015                                                                            iargs, ip, cfg->real_offset, TRUE);
11016                                 CHECK_CFG_EXCEPTION;
11017                                 g_assert (costs > 0);
11018
11019                                 ip += 5;
11020                                 cfg->real_offset += 5;
11021
11022                                 *sp++= iargs [0];
11023
11024                                 inline_costs += costs;
11025                         }
11026                         else {
11027                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11028                                 CHECK_CFG_EXCEPTION;
11029                                 *sp ++ = ins;
11030                                 ip += 5;
11031                         }
11032                         break;
11033                 }
11034                 case CEE_UNBOX_ANY: {
11035                         MonoInst *res, *addr;
11036
11037                         CHECK_STACK (1);
11038                         --sp;
11039                         CHECK_OPSIZE (5);
11040                         token = read32 (ip + 1);
11041                         klass = mini_get_class (method, token, generic_context);
11042                         CHECK_TYPELOAD (klass);
11043
11044                         mono_save_token_info (cfg, image, token, klass);
11045
11046                         context_used = mini_class_check_context_used (cfg, klass);
11047
11048                         if (mini_is_gsharedvt_klass (klass)) {
11049                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11050                                 inline_costs += 2;
11051                         } else if (generic_class_is_reference_type (cfg, klass)) {
11052                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11053                                 CHECK_CFG_EXCEPTION;
11054                         } else if (mono_class_is_nullable (klass)) {
11055                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11056                         } else {
11057                                 addr = handle_unbox (cfg, klass, sp, context_used);
11058                                 /* LDOBJ */
11059                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11060                                 res = ins;
11061                                 inline_costs += 2;
11062                         }
11063
11064                         *sp ++ = res;
11065                         ip += 5;
11066                         break;
11067                 }
11068                 case CEE_BOX: {
11069                         MonoInst *val;
11070                         MonoClass *enum_class;
11071                         MonoMethod *has_flag;
11072
11073                         CHECK_STACK (1);
11074                         --sp;
11075                         val = *sp;
11076                         CHECK_OPSIZE (5);
11077                         token = read32 (ip + 1);
11078                         klass = mini_get_class (method, token, generic_context);
11079                         CHECK_TYPELOAD (klass);
11080
11081                         mono_save_token_info (cfg, image, token, klass);
11082
11083                         context_used = mini_class_check_context_used (cfg, klass);
11084
11085                         if (generic_class_is_reference_type (cfg, klass)) {
11086                                 *sp++ = val;
11087                                 ip += 5;
11088                                 break;
11089                         }
11090
11091                         if (klass == mono_defaults.void_class)
11092                                 UNVERIFIED;
11093                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11094                                 UNVERIFIED;
11095                         /* frequent check in generic code: box (struct), brtrue */
11096
11097                         /*
11098                          * Look for:
11099                          *
11100                          *   <push int/long ptr>
11101                          *   <push int/long>
11102                          *   box MyFlags
11103                          *   constrained. MyFlags
11104                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11105                          *
11106                          * If we find this sequence and the operand types on box and constrained
11107                          * are equal, we can emit a specialized instruction sequence instead of
11108                          * the very slow HasFlag () call.
11109                          */
11110                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11111                             /* Cheap checks first. */
11112                             ip + 5 + 6 + 5 < end &&
11113                             ip [5] == CEE_PREFIX1 &&
11114                             ip [6] == CEE_CONSTRAINED_ &&
11115                             ip [11] == CEE_CALLVIRT &&
11116                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11117                             mono_class_is_enum (klass) &&
11118                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11119                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11120                             has_flag->klass == mono_defaults.enum_class &&
11121                             !strcmp (has_flag->name, "HasFlag") &&
11122                             has_flag->signature->hasthis &&
11123                             has_flag->signature->param_count == 1) {
11124                                 CHECK_TYPELOAD (enum_class);
11125
11126                                 if (enum_class == klass) {
11127                                         MonoInst *enum_this, *enum_flag;
11128
11129                                         ip += 5 + 6 + 5;
11130                                         --sp;
11131
11132                                         enum_this = sp [0];
11133                                         enum_flag = sp [1];
11134
11135                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11136                                         break;
11137                                 }
11138                         }
11139
11140                         // FIXME: LLVM can't handle the inconsistent bb linking
11141                         if (!mono_class_is_nullable (klass) &&
11142                                 !mini_is_gsharedvt_klass (klass) &&
11143                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11144                                 (ip [5] == CEE_BRTRUE ||
11145                                  ip [5] == CEE_BRTRUE_S ||
11146                                  ip [5] == CEE_BRFALSE ||
11147                                  ip [5] == CEE_BRFALSE_S)) {
11148                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11149                                 int dreg;
11150                                 MonoBasicBlock *true_bb, *false_bb;
11151
11152                                 ip += 5;
11153
11154                                 if (cfg->verbose_level > 3) {
11155                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11156                                         printf ("<box+brtrue opt>\n");
11157                                 }
11158
11159                                 switch (*ip) {
11160                                 case CEE_BRTRUE_S:
11161                                 case CEE_BRFALSE_S:
11162                                         CHECK_OPSIZE (2);
11163                                         ip++;
11164                                         target = ip + 1 + (signed char)(*ip);
11165                                         ip++;
11166                                         break;
11167                                 case CEE_BRTRUE:
11168                                 case CEE_BRFALSE:
11169                                         CHECK_OPSIZE (5);
11170                                         ip++;
11171                                         target = ip + 4 + (gint)(read32 (ip));
11172                                         ip += 4;
11173                                         break;
11174                                 default:
11175                                         g_assert_not_reached ();
11176                                 }
11177
11178                                 /*
11179                                  * We need to link both bblocks, since it is needed for handling stack
11180                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11181                                  * Branching to only one of them would lead to inconsistencies, so
11182                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11183                                  */
11184                                 GET_BBLOCK (cfg, true_bb, target);
11185                                 GET_BBLOCK (cfg, false_bb, ip);
11186
11187                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11188                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11189
11190                                 if (sp != stack_start) {
11191                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11192                                         sp = stack_start;
11193                                         CHECK_UNVERIFIABLE (cfg);
11194                                 }
11195
11196                                 if (COMPILE_LLVM (cfg)) {
11197                                         dreg = alloc_ireg (cfg);
11198                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11199                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11200
11201                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11202                                 } else {
11203                                         /* The JIT can't eliminate the iconst+compare */
11204                                         MONO_INST_NEW (cfg, ins, OP_BR);
11205                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11206                                         MONO_ADD_INS (cfg->cbb, ins);
11207                                 }
11208
11209                                 start_new_bblock = 1;
11210                                 break;
11211                         }
11212
11213                         *sp++ = handle_box (cfg, val, klass, context_used);
11214
11215                         CHECK_CFG_EXCEPTION;
11216                         ip += 5;
11217                         inline_costs += 1;
11218                         break;
11219                 }
11220                 case CEE_UNBOX: {
11221                         CHECK_STACK (1);
11222                         --sp;
11223                         CHECK_OPSIZE (5);
11224                         token = read32 (ip + 1);
11225                         klass = mini_get_class (method, token, generic_context);
11226                         CHECK_TYPELOAD (klass);
11227
11228                         mono_save_token_info (cfg, image, token, klass);
11229
11230                         context_used = mini_class_check_context_used (cfg, klass);
11231
11232                         if (mono_class_is_nullable (klass)) {
11233                                 MonoInst *val;
11234
11235                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11236                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11237
11238                                 *sp++= ins;
11239                         } else {
11240                                 ins = handle_unbox (cfg, klass, sp, context_used);
11241                                 *sp++ = ins;
11242                         }
11243                         ip += 5;
11244                         inline_costs += 2;
11245                         break;
11246                 }
11247                 case CEE_LDFLD:
11248                 case CEE_LDFLDA:
11249                 case CEE_STFLD:
11250                 case CEE_LDSFLD:
11251                 case CEE_LDSFLDA:
11252                 case CEE_STSFLD: {
11253                         MonoClassField *field;
11254 #ifndef DISABLE_REMOTING
11255                         int costs;
11256 #endif
11257                         guint foffset;
11258                         gboolean is_instance;
11259                         int op;
11260                         gpointer addr = NULL;
11261                         gboolean is_special_static;
11262                         MonoType *ftype;
11263                         MonoInst *store_val = NULL;
11264                         MonoInst *thread_ins;
11265
11266                         op = *ip;
11267                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11268                         if (is_instance) {
11269                                 if (op == CEE_STFLD) {
11270                                         CHECK_STACK (2);
11271                                         sp -= 2;
11272                                         store_val = sp [1];
11273                                 } else {
11274                                         CHECK_STACK (1);
11275                                         --sp;
11276                                 }
11277                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11278                                         UNVERIFIED;
11279                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11280                                         UNVERIFIED;
11281                         } else {
11282                                 if (op == CEE_STSFLD) {
11283                                         CHECK_STACK (1);
11284                                         sp--;
11285                                         store_val = sp [0];
11286                                 }
11287                         }
11288
11289                         CHECK_OPSIZE (5);
11290                         token = read32 (ip + 1);
11291                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11292                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11293                                 klass = field->parent;
11294                         }
11295                         else {
11296                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11297                                 CHECK_CFG_ERROR;
11298                         }
11299                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11300                                 FIELD_ACCESS_FAILURE (method, field);
11301                         mono_class_init (klass);
11302
11303                         /* if the class is Critical then transparent code cannot access it's fields */
11304                         if (!is_instance && mono_security_core_clr_enabled ())
11305                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11306
11307                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11308                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11309                         if (mono_security_core_clr_enabled ())
11310                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11311                         */
11312
11313                         ftype = mono_field_get_type (field);
11314
11315                         /*
11316                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11317                          * the static case.
11318                          */
11319                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11320                                 switch (op) {
11321                                 case CEE_LDFLD:
11322                                         op = CEE_LDSFLD;
11323                                         break;
11324                                 case CEE_STFLD:
11325                                         op = CEE_STSFLD;
11326                                         break;
11327                                 case CEE_LDFLDA:
11328                                         op = CEE_LDSFLDA;
11329                                         break;
11330                                 default:
11331                                         g_assert_not_reached ();
11332                                 }
11333                                 is_instance = FALSE;
11334                         }
11335
11336                         context_used = mini_class_check_context_used (cfg, klass);
11337
11338                         /* INSTANCE CASE */
11339
11340                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11341                         if (op == CEE_STFLD) {
11342                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11343                                         UNVERIFIED;
11344 #ifndef DISABLE_REMOTING
11345                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11346                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11347                                         MonoInst *iargs [5];
11348
11349                                         GSHAREDVT_FAILURE (op);
11350
11351                                         iargs [0] = sp [0];
11352                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11353                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11354                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11355                                                     field->offset);
11356                                         iargs [4] = sp [1];
11357
11358                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11359                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11360                                                                                            iargs, ip, cfg->real_offset, TRUE);
11361                                                 CHECK_CFG_EXCEPTION;
11362                                                 g_assert (costs > 0);
11363
11364                                                 cfg->real_offset += 5;
11365
11366                                                 inline_costs += costs;
11367                                         } else {
11368                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11369                                         }
11370                                 } else
11371 #endif
11372                                 {
11373                                         MonoInst *store, *wbarrier_ptr_ins = NULL;
11374
11375                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11376
11377                                         if (mini_is_gsharedvt_klass (klass)) {
11378                                                 MonoInst *offset_ins;
11379
11380                                                 context_used = mini_class_check_context_used (cfg, klass);
11381
11382                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11383                                                 /* The value is offset by 1 */
11384                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11385                                                 dreg = alloc_ireg_mp (cfg);
11386                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11387                                                 wbarrier_ptr_ins = ins;
11388                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11389                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11390                                         } else {
11391                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11392                                         }
11393                                         if (sp [0]->opcode != OP_LDADDR)
11394                                                 store->flags |= MONO_INST_FAULT;
11395
11396                                         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)) {
11397                                                 if (mini_is_gsharedvt_klass (klass)) {
11398                                                         g_assert (wbarrier_ptr_ins);
11399                                                         emit_write_barrier (cfg, wbarrier_ptr_ins, sp [1]);
11400                                                 } else {
11401                                                         /* insert call to write barrier */
11402                                                         MonoInst *ptr;
11403                                                         int dreg;
11404
11405                                                         dreg = alloc_ireg_mp (cfg);
11406                                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11407                                                         emit_write_barrier (cfg, ptr, sp [1]);
11408                                                 }
11409                                         }
11410
11411                                         store->flags |= ins_flag;
11412                                 }
11413                                 ins_flag = 0;
11414                                 ip += 5;
11415                                 break;
11416                         }
11417
11418 #ifndef DISABLE_REMOTING
11419                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11420                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11421                                 MonoInst *iargs [4];
11422
11423                                 GSHAREDVT_FAILURE (op);
11424
11425                                 iargs [0] = sp [0];
11426                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11427                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11428                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11429                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11430                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11431                                                                                    iargs, ip, cfg->real_offset, TRUE);
11432                                         CHECK_CFG_EXCEPTION;
11433                                         g_assert (costs > 0);
11434
11435                                         cfg->real_offset += 5;
11436
11437                                         *sp++ = iargs [0];
11438
11439                                         inline_costs += costs;
11440                                 } else {
11441                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11442                                         *sp++ = ins;
11443                                 }
11444                         } else
11445 #endif
11446                         if (is_instance) {
11447                                 if (sp [0]->type == STACK_VTYPE) {
11448                                         MonoInst *var;
11449
11450                                         /* Have to compute the address of the variable */
11451
11452                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11453                                         if (!var)
11454                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11455                                         else
11456                                                 g_assert (var->klass == klass);
11457
11458                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11459                                         sp [0] = ins;
11460                                 }
11461
11462                                 if (op == CEE_LDFLDA) {
11463                                         if (sp [0]->type == STACK_OBJ) {
11464                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11465                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11466                                         }
11467
11468                                         dreg = alloc_ireg_mp (cfg);
11469
11470                                         if (mini_is_gsharedvt_klass (klass)) {
11471                                                 MonoInst *offset_ins;
11472
11473                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11474                                                 /* The value is offset by 1 */
11475                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11476                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11477                                         } else {
11478                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11479                                         }
11480                                         ins->klass = mono_class_from_mono_type (field->type);
11481                                         ins->type = STACK_MP;
11482                                         *sp++ = ins;
11483                                 } else {
11484                                         MonoInst *load;
11485
11486                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11487
11488                                         if (mini_is_gsharedvt_klass (klass)) {
11489                                                 MonoInst *offset_ins;
11490
11491                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11492                                                 /* The value is offset by 1 */
11493                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11494                                                 dreg = alloc_ireg_mp (cfg);
11495                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11496                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11497                                         } else {
11498                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11499                                         }
11500                                         load->flags |= ins_flag;
11501                                         if (sp [0]->opcode != OP_LDADDR)
11502                                                 load->flags |= MONO_INST_FAULT;
11503                                         *sp++ = load;
11504                                 }
11505                         }
11506
11507                         if (is_instance) {
11508                                 ins_flag = 0;
11509                                 ip += 5;
11510                                 break;
11511                         }
11512
11513                         /* STATIC CASE */
11514                         context_used = mini_class_check_context_used (cfg, klass);
11515
11516                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11517                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11518                                 CHECK_CFG_ERROR;
11519                         }
11520
11521                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11522                          * to be called here.
11523                          */
11524                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11525                                 mono_class_vtable (cfg->domain, klass);
11526                                 CHECK_TYPELOAD (klass);
11527                         }
11528                         mono_domain_lock (cfg->domain);
11529                         if (cfg->domain->special_static_fields)
11530                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11531                         mono_domain_unlock (cfg->domain);
11532
11533                         is_special_static = mono_class_field_is_special_static (field);
11534
11535                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11536                                 thread_ins = mono_get_thread_intrinsic (cfg);
11537                         else
11538                                 thread_ins = NULL;
11539
11540                         /* Generate IR to compute the field address */
11541                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11542                                 /*
11543                                  * Fast access to TLS data
11544                                  * Inline version of get_thread_static_data () in
11545                                  * threads.c.
11546                                  */
11547                                 guint32 offset;
11548                                 int idx, static_data_reg, array_reg, dreg;
11549
11550                                 GSHAREDVT_FAILURE (op);
11551
11552                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11553                                 static_data_reg = alloc_ireg (cfg);
11554                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11555
11556                                 if (cfg->compile_aot) {
11557                                         int offset_reg, offset2_reg, idx_reg;
11558
11559                                         /* For TLS variables, this will return the TLS offset */
11560                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11561                                         offset_reg = ins->dreg;
11562                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11563                                         idx_reg = alloc_ireg (cfg);
11564                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11565                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11566                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11567                                         array_reg = alloc_ireg (cfg);
11568                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11569                                         offset2_reg = alloc_ireg (cfg);
11570                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11571                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11572                                         dreg = alloc_ireg (cfg);
11573                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11574                                 } else {
11575                                         offset = (gsize)addr & 0x7fffffff;
11576                                         idx = offset & 0x3f;
11577
11578                                         array_reg = alloc_ireg (cfg);
11579                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11580                                         dreg = alloc_ireg (cfg);
11581                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11582                                 }
11583                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11584                                         (cfg->compile_aot && is_special_static) ||
11585                                         (context_used && is_special_static)) {
11586                                 MonoInst *iargs [2];
11587
11588                                 g_assert (field->parent);
11589                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11590                                 if (context_used) {
11591                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11592                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11593                                 } else {
11594                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11595                                 }
11596                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11597                         } else if (context_used) {
11598                                 MonoInst *static_data;
11599
11600                                 /*
11601                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11602                                         method->klass->name_space, method->klass->name, method->name,
11603                                         depth, field->offset);
11604                                 */
11605
11606                                 if (mono_class_needs_cctor_run (klass, method))
11607                                         emit_class_init (cfg, klass);
11608
11609                                 /*
11610                                  * The pointer we're computing here is
11611                                  *
11612                                  *   super_info.static_data + field->offset
11613                                  */
11614                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11615                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11616
11617                                 if (mini_is_gsharedvt_klass (klass)) {
11618                                         MonoInst *offset_ins;
11619
11620                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11621                                         /* The value is offset by 1 */
11622                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11623                                         dreg = alloc_ireg_mp (cfg);
11624                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11625                                 } else if (field->offset == 0) {
11626                                         ins = static_data;
11627                                 } else {
11628                                         int addr_reg = mono_alloc_preg (cfg);
11629                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11630                                 }
11631                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11632                                 MonoInst *iargs [2];
11633
11634                                 g_assert (field->parent);
11635                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11636                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11637                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11638                         } else {
11639                                 MonoVTable *vtable = NULL;
11640
11641                                 if (!cfg->compile_aot)
11642                                         vtable = mono_class_vtable (cfg->domain, klass);
11643                                 CHECK_TYPELOAD (klass);
11644
11645                                 if (!addr) {
11646                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11647                                                 if (!(g_slist_find (class_inits, klass))) {
11648                                                         emit_class_init (cfg, klass);
11649                                                         if (cfg->verbose_level > 2)
11650                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11651                                                         class_inits = g_slist_prepend (class_inits, klass);
11652                                                 }
11653                                         } else {
11654                                                 if (cfg->run_cctors) {
11655                                                         /* This makes so that inline cannot trigger */
11656                                                         /* .cctors: too many apps depend on them */
11657                                                         /* running with a specific order... */
11658                                                         g_assert (vtable);
11659                                                         if (! vtable->initialized)
11660                                                                 INLINE_FAILURE ("class init");
11661                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11662                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11663                                                                 goto exception_exit;
11664                                                         }
11665                                                 }
11666                                         }
11667                                         if (cfg->compile_aot)
11668                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11669                                         else {
11670                                                 g_assert (vtable);
11671                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11672                                                 g_assert (addr);
11673                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11674                                         }
11675                                 } else {
11676                                         MonoInst *iargs [1];
11677                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11678                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11679                                 }
11680                         }
11681
11682                         /* Generate IR to do the actual load/store operation */
11683
11684                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11685                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11686                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11687                         }
11688
11689                         if (op == CEE_LDSFLDA) {
11690                                 ins->klass = mono_class_from_mono_type (ftype);
11691                                 ins->type = STACK_PTR;
11692                                 *sp++ = ins;
11693                         } else if (op == CEE_STSFLD) {
11694                                 MonoInst *store;
11695
11696                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11697                                 store->flags |= ins_flag;
11698                         } else {
11699                                 gboolean is_const = FALSE;
11700                                 MonoVTable *vtable = NULL;
11701                                 gpointer addr = NULL;
11702
11703                                 if (!context_used) {
11704                                         vtable = mono_class_vtable (cfg->domain, klass);
11705                                         CHECK_TYPELOAD (klass);
11706                                 }
11707                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11708                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11709                                         int ro_type = ftype->type;
11710                                         if (!addr)
11711                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11712                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11713                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11714                                         }
11715
11716                                         GSHAREDVT_FAILURE (op);
11717
11718                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11719                                         is_const = TRUE;
11720                                         switch (ro_type) {
11721                                         case MONO_TYPE_BOOLEAN:
11722                                         case MONO_TYPE_U1:
11723                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11724                                                 sp++;
11725                                                 break;
11726                                         case MONO_TYPE_I1:
11727                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11728                                                 sp++;
11729                                                 break;
11730                                         case MONO_TYPE_CHAR:
11731                                         case MONO_TYPE_U2:
11732                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11733                                                 sp++;
11734                                                 break;
11735                                         case MONO_TYPE_I2:
11736                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11737                                                 sp++;
11738                                                 break;
11739                                                 break;
11740                                         case MONO_TYPE_I4:
11741                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11742                                                 sp++;
11743                                                 break;
11744                                         case MONO_TYPE_U4:
11745                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11746                                                 sp++;
11747                                                 break;
11748                                         case MONO_TYPE_I:
11749                                         case MONO_TYPE_U:
11750                                         case MONO_TYPE_PTR:
11751                                         case MONO_TYPE_FNPTR:
11752                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11753                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11754                                                 sp++;
11755                                                 break;
11756                                         case MONO_TYPE_STRING:
11757                                         case MONO_TYPE_OBJECT:
11758                                         case MONO_TYPE_CLASS:
11759                                         case MONO_TYPE_SZARRAY:
11760                                         case MONO_TYPE_ARRAY:
11761                                                 if (!mono_gc_is_moving ()) {
11762                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11763                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11764                                                         sp++;
11765                                                 } else {
11766                                                         is_const = FALSE;
11767                                                 }
11768                                                 break;
11769                                         case MONO_TYPE_I8:
11770                                         case MONO_TYPE_U8:
11771                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11772                                                 sp++;
11773                                                 break;
11774                                         case MONO_TYPE_R4:
11775                                         case MONO_TYPE_R8:
11776                                         case MONO_TYPE_VALUETYPE:
11777                                         default:
11778                                                 is_const = FALSE;
11779                                                 break;
11780                                         }
11781                                 }
11782
11783                                 if (!is_const) {
11784                                         MonoInst *load;
11785
11786                                         CHECK_STACK_OVF (1);
11787
11788                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11789                                         load->flags |= ins_flag;
11790                                         ins_flag = 0;
11791                                         *sp++ = load;
11792                                 }
11793                         }
11794
11795                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11796                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11797                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11798                         }
11799
11800                         ins_flag = 0;
11801                         ip += 5;
11802                         break;
11803                 }
11804                 case CEE_STOBJ:
11805                         CHECK_STACK (2);
11806                         sp -= 2;
11807                         CHECK_OPSIZE (5);
11808                         token = read32 (ip + 1);
11809                         klass = mini_get_class (method, token, generic_context);
11810                         CHECK_TYPELOAD (klass);
11811                         if (ins_flag & MONO_INST_VOLATILE) {
11812                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11813                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11814                         }
11815                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11816                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11817                         ins->flags |= ins_flag;
11818                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11819                                         generic_class_is_reference_type (cfg, klass)) {
11820                                 /* insert call to write barrier */
11821                                 emit_write_barrier (cfg, sp [0], sp [1]);
11822                         }
11823                         ins_flag = 0;
11824                         ip += 5;
11825                         inline_costs += 1;
11826                         break;
11827
11828                         /*
11829                          * Array opcodes
11830                          */
11831                 case CEE_NEWARR: {
11832                         MonoInst *len_ins;
11833                         const char *data_ptr;
11834                         int data_size = 0;
11835                         guint32 field_token;
11836
11837                         CHECK_STACK (1);
11838                         --sp;
11839
11840                         CHECK_OPSIZE (5);
11841                         token = read32 (ip + 1);
11842
11843                         klass = mini_get_class (method, token, generic_context);
11844                         CHECK_TYPELOAD (klass);
11845
11846                         context_used = mini_class_check_context_used (cfg, klass);
11847
11848                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11849                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11850                                 ins->sreg1 = sp [0]->dreg;
11851                                 ins->type = STACK_I4;
11852                                 ins->dreg = alloc_ireg (cfg);
11853                                 MONO_ADD_INS (cfg->cbb, ins);
11854                                 *sp = mono_decompose_opcode (cfg, ins);
11855                         }
11856
11857                         if (context_used) {
11858                                 MonoInst *args [3];
11859                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11860                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11861
11862                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11863
11864                                 /* vtable */
11865                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11866                                         array_class, MONO_RGCTX_INFO_VTABLE);
11867                                 /* array len */
11868                                 args [1] = sp [0];
11869
11870                                 if (managed_alloc)
11871                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11872                                 else
11873                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11874                         } else {
11875                                 if (cfg->opt & MONO_OPT_SHARED) {
11876                                         /* Decompose now to avoid problems with references to the domainvar */
11877                                         MonoInst *iargs [3];
11878
11879                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11880                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11881                                         iargs [2] = sp [0];
11882
11883                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new, iargs);
11884                                 } else {
11885                                         /* Decompose later since it is needed by abcrem */
11886                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11887                                         mono_class_vtable (cfg->domain, array_type);
11888                                         CHECK_TYPELOAD (array_type);
11889
11890                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11891                                         ins->dreg = alloc_ireg_ref (cfg);
11892                                         ins->sreg1 = sp [0]->dreg;
11893                                         ins->inst_newa_class = klass;
11894                                         ins->type = STACK_OBJ;
11895                                         ins->klass = array_type;
11896                                         MONO_ADD_INS (cfg->cbb, ins);
11897                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11898                                         cfg->cbb->has_array_access = TRUE;
11899
11900                                         /* Needed so mono_emit_load_get_addr () gets called */
11901                                         mono_get_got_var (cfg);
11902                                 }
11903                         }
11904
11905                         len_ins = sp [0];
11906                         ip += 5;
11907                         *sp++ = ins;
11908                         inline_costs += 1;
11909
11910                         /*
11911                          * we inline/optimize the initialization sequence if possible.
11912                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11913                          * for small sizes open code the memcpy
11914                          * ensure the rva field is big enough
11915                          */
11916                         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))) {
11917                                 MonoMethod *memcpy_method = get_memcpy_method ();
11918                                 MonoInst *iargs [3];
11919                                 int add_reg = alloc_ireg_mp (cfg);
11920
11921                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11922                                 if (cfg->compile_aot) {
11923                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11924                                 } else {
11925                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11926                                 }
11927                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11928                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11929                                 ip += 11;
11930                         }
11931
11932                         break;
11933                 }
11934                 case CEE_LDLEN:
11935                         CHECK_STACK (1);
11936                         --sp;
11937                         if (sp [0]->type != STACK_OBJ)
11938                                 UNVERIFIED;
11939
11940                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11941                         ins->dreg = alloc_preg (cfg);
11942                         ins->sreg1 = sp [0]->dreg;
11943                         ins->type = STACK_I4;
11944                         /* This flag will be inherited by the decomposition */
11945                         ins->flags |= MONO_INST_FAULT;
11946                         MONO_ADD_INS (cfg->cbb, ins);
11947                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11948                         cfg->cbb->has_array_access = TRUE;
11949                         ip ++;
11950                         *sp++ = ins;
11951                         break;
11952                 case CEE_LDELEMA:
11953                         CHECK_STACK (2);
11954                         sp -= 2;
11955                         CHECK_OPSIZE (5);
11956                         if (sp [0]->type != STACK_OBJ)
11957                                 UNVERIFIED;
11958
11959                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11960
11961                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11962                         CHECK_TYPELOAD (klass);
11963                         /* we need to make sure that this array is exactly the type it needs
11964                          * to be for correctness. the wrappers are lax with their usage
11965                          * so we need to ignore them here
11966                          */
11967                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11968                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11969                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11970                                 CHECK_TYPELOAD (array_class);
11971                         }
11972
11973                         readonly = FALSE;
11974                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11975                         *sp++ = ins;
11976                         ip += 5;
11977                         break;
11978                 case CEE_LDELEM:
11979                 case CEE_LDELEM_I1:
11980                 case CEE_LDELEM_U1:
11981                 case CEE_LDELEM_I2:
11982                 case CEE_LDELEM_U2:
11983                 case CEE_LDELEM_I4:
11984                 case CEE_LDELEM_U4:
11985                 case CEE_LDELEM_I8:
11986                 case CEE_LDELEM_I:
11987                 case CEE_LDELEM_R4:
11988                 case CEE_LDELEM_R8:
11989                 case CEE_LDELEM_REF: {
11990                         MonoInst *addr;
11991
11992                         CHECK_STACK (2);
11993                         sp -= 2;
11994
11995                         if (*ip == CEE_LDELEM) {
11996                                 CHECK_OPSIZE (5);
11997                                 token = read32 (ip + 1);
11998                                 klass = mini_get_class (method, token, generic_context);
11999                                 CHECK_TYPELOAD (klass);
12000                                 mono_class_init (klass);
12001                         }
12002                         else
12003                                 klass = array_access_to_klass (*ip);
12004
12005                         if (sp [0]->type != STACK_OBJ)
12006                                 UNVERIFIED;
12007
12008                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12009
12010                         if (mini_is_gsharedvt_variable_klass (klass)) {
12011                                 // FIXME-VT: OP_ICONST optimization
12012                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12013                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12014                                 ins->opcode = OP_LOADV_MEMBASE;
12015                         } else if (sp [1]->opcode == OP_ICONST) {
12016                                 int array_reg = sp [0]->dreg;
12017                                 int index_reg = sp [1]->dreg;
12018                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12019
12020                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12021                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12022
12023                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12024                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12025                         } else {
12026                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12027                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12028                         }
12029                         *sp++ = ins;
12030                         if (*ip == CEE_LDELEM)
12031                                 ip += 5;
12032                         else
12033                                 ++ip;
12034                         break;
12035                 }
12036                 case CEE_STELEM_I:
12037                 case CEE_STELEM_I1:
12038                 case CEE_STELEM_I2:
12039                 case CEE_STELEM_I4:
12040                 case CEE_STELEM_I8:
12041                 case CEE_STELEM_R4:
12042                 case CEE_STELEM_R8:
12043                 case CEE_STELEM_REF:
12044                 case CEE_STELEM: {
12045                         CHECK_STACK (3);
12046                         sp -= 3;
12047
12048                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12049
12050                         if (*ip == CEE_STELEM) {
12051                                 CHECK_OPSIZE (5);
12052                                 token = read32 (ip + 1);
12053                                 klass = mini_get_class (method, token, generic_context);
12054                                 CHECK_TYPELOAD (klass);
12055                                 mono_class_init (klass);
12056                         }
12057                         else
12058                                 klass = array_access_to_klass (*ip);
12059
12060                         if (sp [0]->type != STACK_OBJ)
12061                                 UNVERIFIED;
12062
12063                         emit_array_store (cfg, klass, sp, TRUE);
12064
12065                         if (*ip == CEE_STELEM)
12066                                 ip += 5;
12067                         else
12068                                 ++ip;
12069                         inline_costs += 1;
12070                         break;
12071                 }
12072                 case CEE_CKFINITE: {
12073                         CHECK_STACK (1);
12074                         --sp;
12075
12076                         if (cfg->llvm_only) {
12077                                 MonoInst *iargs [1];
12078
12079                                 iargs [0] = sp [0];
12080                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12081                         } else  {
12082                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12083                                 ins->sreg1 = sp [0]->dreg;
12084                                 ins->dreg = alloc_freg (cfg);
12085                                 ins->type = STACK_R8;
12086                                 MONO_ADD_INS (cfg->cbb, ins);
12087
12088                                 *sp++ = mono_decompose_opcode (cfg, ins);
12089                         }
12090
12091                         ++ip;
12092                         break;
12093                 }
12094                 case CEE_REFANYVAL: {
12095                         MonoInst *src_var, *src;
12096
12097                         int klass_reg = alloc_preg (cfg);
12098                         int dreg = alloc_preg (cfg);
12099
12100                         GSHAREDVT_FAILURE (*ip);
12101
12102                         CHECK_STACK (1);
12103                         MONO_INST_NEW (cfg, ins, *ip);
12104                         --sp;
12105                         CHECK_OPSIZE (5);
12106                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12107                         CHECK_TYPELOAD (klass);
12108
12109                         context_used = mini_class_check_context_used (cfg, klass);
12110
12111                         // FIXME:
12112                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12113                         if (!src_var)
12114                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12115                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12116                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12117
12118                         if (context_used) {
12119                                 MonoInst *klass_ins;
12120
12121                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12122                                                 klass, MONO_RGCTX_INFO_KLASS);
12123
12124                                 // FIXME:
12125                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12126                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12127                         } else {
12128                                 mini_emit_class_check (cfg, klass_reg, klass);
12129                         }
12130                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12131                         ins->type = STACK_MP;
12132                         ins->klass = klass;
12133                         *sp++ = ins;
12134                         ip += 5;
12135                         break;
12136                 }
12137                 case CEE_MKREFANY: {
12138                         MonoInst *loc, *addr;
12139
12140                         GSHAREDVT_FAILURE (*ip);
12141
12142                         CHECK_STACK (1);
12143                         MONO_INST_NEW (cfg, ins, *ip);
12144                         --sp;
12145                         CHECK_OPSIZE (5);
12146                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12147                         CHECK_TYPELOAD (klass);
12148
12149                         context_used = mini_class_check_context_used (cfg, klass);
12150
12151                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12152                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12153
12154                         if (context_used) {
12155                                 MonoInst *const_ins;
12156                                 int type_reg = alloc_preg (cfg);
12157
12158                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12159                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12160                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12161                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12162                         } else if (cfg->compile_aot) {
12163                                 int const_reg = alloc_preg (cfg);
12164                                 int type_reg = alloc_preg (cfg);
12165
12166                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12167                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12168                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12169                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12170                         } else {
12171                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12172                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12173                         }
12174                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12175
12176                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12177                         ins->type = STACK_VTYPE;
12178                         ins->klass = mono_defaults.typed_reference_class;
12179                         *sp++ = ins;
12180                         ip += 5;
12181                         break;
12182                 }
12183                 case CEE_LDTOKEN: {
12184                         gpointer handle;
12185                         MonoClass *handle_class;
12186
12187                         CHECK_STACK_OVF (1);
12188
12189                         CHECK_OPSIZE (5);
12190                         n = read32 (ip + 1);
12191
12192                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12193                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12194                                 handle = mono_method_get_wrapper_data (method, n);
12195                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12196                                 if (handle_class == mono_defaults.typehandle_class)
12197                                         handle = &((MonoClass*)handle)->byval_arg;
12198                         }
12199                         else {
12200                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12201                                 CHECK_CFG_ERROR;
12202                         }
12203                         if (!handle)
12204                                 LOAD_ERROR;
12205                         mono_class_init (handle_class);
12206                         if (cfg->gshared) {
12207                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12208                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12209                                         /* This case handles ldtoken
12210                                            of an open type, like for
12211                                            typeof(Gen<>). */
12212                                         context_used = 0;
12213                                 } else if (handle_class == mono_defaults.typehandle_class) {
12214                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12215                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12216                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12217                                 else if (handle_class == mono_defaults.methodhandle_class)
12218                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12219                                 else
12220                                         g_assert_not_reached ();
12221                         }
12222
12223                         if ((cfg->opt & MONO_OPT_SHARED) &&
12224                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12225                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12226                                 MonoInst *addr, *vtvar, *iargs [3];
12227                                 int method_context_used;
12228
12229                                 method_context_used = mini_method_check_context_used (cfg, method);
12230
12231                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12232
12233                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12234                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12235                                 if (method_context_used) {
12236                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12237                                                 method, MONO_RGCTX_INFO_METHOD);
12238                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12239                                 } else {
12240                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12241                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12242                                 }
12243                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12244
12245                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12246
12247                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12248                         } else {
12249                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12250                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12251                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12252                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12253                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12254                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12255
12256                                         mono_class_init (tclass);
12257                                         if (context_used) {
12258                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12259                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12260                                         } else if (cfg->compile_aot) {
12261                                                 if (method->wrapper_type) {
12262                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12263                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12264                                                                 /* Special case for static synchronized wrappers */
12265                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12266                                                         } else {
12267                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12268                                                                 /* FIXME: n is not a normal token */
12269                                                                 DISABLE_AOT (cfg);
12270                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12271                                                         }
12272                                                 } else {
12273                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12274                                                 }
12275                                         } else {
12276                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12277                                                 CHECK_CFG_ERROR;
12278                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12279                                         }
12280                                         ins->type = STACK_OBJ;
12281                                         ins->klass = cmethod->klass;
12282                                         ip += 5;
12283                                 } else {
12284                                         MonoInst *addr, *vtvar;
12285
12286                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12287
12288                                         if (context_used) {
12289                                                 if (handle_class == mono_defaults.typehandle_class) {
12290                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12291                                                                         mono_class_from_mono_type ((MonoType *)handle),
12292                                                                         MONO_RGCTX_INFO_TYPE);
12293                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12294                                                         ins = emit_get_rgctx_method (cfg, context_used,
12295                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12296                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12297                                                         ins = emit_get_rgctx_field (cfg, context_used,
12298                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12299                                                 } else {
12300                                                         g_assert_not_reached ();
12301                                                 }
12302                                         } else if (cfg->compile_aot) {
12303                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12304                                         } else {
12305                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12306                                         }
12307                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12308                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12309                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12310                                 }
12311                         }
12312
12313                         *sp++ = ins;
12314                         ip += 5;
12315                         break;
12316                 }
12317                 case CEE_THROW:
12318                         CHECK_STACK (1);
12319                         MONO_INST_NEW (cfg, ins, OP_THROW);
12320                         --sp;
12321                         ins->sreg1 = sp [0]->dreg;
12322                         ip++;
12323                         cfg->cbb->out_of_line = TRUE;
12324                         MONO_ADD_INS (cfg->cbb, ins);
12325                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12326                         MONO_ADD_INS (cfg->cbb, ins);
12327                         sp = stack_start;
12328
12329                         link_bblock (cfg, cfg->cbb, end_bblock);
12330                         start_new_bblock = 1;
12331                         /* This can complicate code generation for llvm since the return value might not be defined */
12332                         if (COMPILE_LLVM (cfg))
12333                                 INLINE_FAILURE ("throw");
12334                         break;
12335                 case CEE_ENDFINALLY:
12336                         /* mono_save_seq_point_info () depends on this */
12337                         if (sp != stack_start)
12338                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12339                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12340                         MONO_ADD_INS (cfg->cbb, ins);
12341                         ip++;
12342                         start_new_bblock = 1;
12343
12344                         /*
12345                          * Control will leave the method so empty the stack, otherwise
12346                          * the next basic block will start with a nonempty stack.
12347                          */
12348                         while (sp != stack_start) {
12349                                 sp--;
12350                         }
12351                         break;
12352                 case CEE_LEAVE:
12353                 case CEE_LEAVE_S: {
12354                         GList *handlers;
12355
12356                         if (*ip == CEE_LEAVE) {
12357                                 CHECK_OPSIZE (5);
12358                                 target = ip + 5 + (gint32)read32(ip + 1);
12359                         } else {
12360                                 CHECK_OPSIZE (2);
12361                                 target = ip + 2 + (signed char)(ip [1]);
12362                         }
12363
12364                         /* empty the stack */
12365                         while (sp != stack_start) {
12366                                 sp--;
12367                         }
12368
12369                         /*
12370                          * If this leave statement is in a catch block, check for a
12371                          * pending exception, and rethrow it if necessary.
12372                          * We avoid doing this in runtime invoke wrappers, since those are called
12373                          * by native code which excepts the wrapper to catch all exceptions.
12374                          */
12375                         for (i = 0; i < header->num_clauses; ++i) {
12376                                 MonoExceptionClause *clause = &header->clauses [i];
12377
12378                                 /*
12379                                  * Use <= in the final comparison to handle clauses with multiple
12380                                  * leave statements, like in bug #78024.
12381                                  * The ordering of the exception clauses guarantees that we find the
12382                                  * innermost clause.
12383                                  */
12384                                 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) {
12385                                         MonoInst *exc_ins;
12386                                         MonoBasicBlock *dont_throw;
12387
12388                                         /*
12389                                           MonoInst *load;
12390
12391                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12392                                         */
12393
12394                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12395
12396                                         NEW_BBLOCK (cfg, dont_throw);
12397
12398                                         /*
12399                                          * Currently, we always rethrow the abort exception, despite the
12400                                          * fact that this is not correct. See thread6.cs for an example.
12401                                          * But propagating the abort exception is more important than
12402                                          * getting the sematics right.
12403                                          */
12404                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12405                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12406                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12407
12408                                         MONO_START_BB (cfg, dont_throw);
12409                                 }
12410                         }
12411
12412 #ifdef ENABLE_LLVM
12413                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12414 #endif
12415
12416                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12417                                 GList *tmp;
12418                                 MonoExceptionClause *clause;
12419
12420                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12421                                         clause = (MonoExceptionClause *)tmp->data;
12422                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12423                                         g_assert (tblock);
12424                                         link_bblock (cfg, cfg->cbb, tblock);
12425                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12426                                         ins->inst_target_bb = tblock;
12427                                         ins->inst_eh_block = clause;
12428                                         MONO_ADD_INS (cfg->cbb, ins);
12429                                         cfg->cbb->has_call_handler = 1;
12430                                         if (COMPILE_LLVM (cfg)) {
12431                                                 MonoBasicBlock *target_bb;
12432
12433                                                 /*
12434                                                  * Link the finally bblock with the target, since it will
12435                                                  * conceptually branch there.
12436                                                  */
12437                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12438                                                 GET_BBLOCK (cfg, target_bb, target);
12439                                                 link_bblock (cfg, tblock, target_bb);
12440                                         }
12441                                 }
12442                                 g_list_free (handlers);
12443                         }
12444
12445                         MONO_INST_NEW (cfg, ins, OP_BR);
12446                         MONO_ADD_INS (cfg->cbb, ins);
12447                         GET_BBLOCK (cfg, tblock, target);
12448                         link_bblock (cfg, cfg->cbb, tblock);
12449                         ins->inst_target_bb = tblock;
12450
12451                         start_new_bblock = 1;
12452
12453                         if (*ip == CEE_LEAVE)
12454                                 ip += 5;
12455                         else
12456                                 ip += 2;
12457
12458                         break;
12459                 }
12460
12461                         /*
12462                          * Mono specific opcodes
12463                          */
12464                 case MONO_CUSTOM_PREFIX: {
12465
12466                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12467
12468                         CHECK_OPSIZE (2);
12469                         switch (ip [1]) {
12470                         case CEE_MONO_ICALL: {
12471                                 gpointer func;
12472                                 MonoJitICallInfo *info;
12473
12474                                 token = read32 (ip + 2);
12475                                 func = mono_method_get_wrapper_data (method, token);
12476                                 info = mono_find_jit_icall_by_addr (func);
12477                                 if (!info)
12478                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12479                                 g_assert (info);
12480
12481                                 CHECK_STACK (info->sig->param_count);
12482                                 sp -= info->sig->param_count;
12483
12484                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12485                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12486                                         *sp++ = ins;
12487
12488                                 ip += 6;
12489                                 inline_costs += 10 * num_calls++;
12490
12491                                 break;
12492                         }
12493                         case CEE_MONO_LDPTR_CARD_TABLE:
12494                         case CEE_MONO_LDPTR_NURSERY_START:
12495                         case CEE_MONO_LDPTR_NURSERY_BITS:
12496                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12497                                 CHECK_STACK_OVF (1);
12498
12499                                 switch (ip [1]) {
12500                                         case CEE_MONO_LDPTR_CARD_TABLE:
12501                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12502                                                 break;
12503                                         case CEE_MONO_LDPTR_NURSERY_START:
12504                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12505                                                 break;
12506                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12507                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12508                                                 break;
12509                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12510                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12511                                                 break;
12512                                 }
12513
12514                                 *sp++ = ins;
12515                                 ip += 2;
12516                                 inline_costs += 10 * num_calls++;
12517                                 break;
12518                         }
12519                         case CEE_MONO_LDPTR: {
12520                                 gpointer ptr;
12521
12522                                 CHECK_STACK_OVF (1);
12523                                 CHECK_OPSIZE (6);
12524                                 token = read32 (ip + 2);
12525
12526                                 ptr = mono_method_get_wrapper_data (method, token);
12527                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12528                                 *sp++ = ins;
12529                                 ip += 6;
12530                                 inline_costs += 10 * num_calls++;
12531                                 /* Can't embed random pointers into AOT code */
12532                                 DISABLE_AOT (cfg);
12533                                 break;
12534                         }
12535                         case CEE_MONO_JIT_ICALL_ADDR: {
12536                                 MonoJitICallInfo *callinfo;
12537                                 gpointer ptr;
12538
12539                                 CHECK_STACK_OVF (1);
12540                                 CHECK_OPSIZE (6);
12541                                 token = read32 (ip + 2);
12542
12543                                 ptr = mono_method_get_wrapper_data (method, token);
12544                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12545                                 g_assert (callinfo);
12546                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12547                                 *sp++ = ins;
12548                                 ip += 6;
12549                                 inline_costs += 10 * num_calls++;
12550                                 break;
12551                         }
12552                         case CEE_MONO_ICALL_ADDR: {
12553                                 MonoMethod *cmethod;
12554                                 gpointer ptr;
12555
12556                                 CHECK_STACK_OVF (1);
12557                                 CHECK_OPSIZE (6);
12558                                 token = read32 (ip + 2);
12559
12560                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12561
12562                                 if (cfg->compile_aot) {
12563                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12564                                 } else {
12565                                         ptr = mono_lookup_internal_call (cmethod);
12566                                         g_assert (ptr);
12567                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12568                                 }
12569                                 *sp++ = ins;
12570                                 ip += 6;
12571                                 break;
12572                         }
12573                         case CEE_MONO_VTADDR: {
12574                                 MonoInst *src_var, *src;
12575
12576                                 CHECK_STACK (1);
12577                                 --sp;
12578
12579                                 // FIXME:
12580                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12581                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12582                                 *sp++ = src;
12583                                 ip += 2;
12584                                 break;
12585                         }
12586                         case CEE_MONO_NEWOBJ: {
12587                                 MonoInst *iargs [2];
12588
12589                                 CHECK_STACK_OVF (1);
12590                                 CHECK_OPSIZE (6);
12591                                 token = read32 (ip + 2);
12592                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12593                                 mono_class_init (klass);
12594                                 NEW_DOMAINCONST (cfg, iargs [0]);
12595                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12596                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12597                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12598                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12599                                 ip += 6;
12600                                 inline_costs += 10 * num_calls++;
12601                                 break;
12602                         }
12603                         case CEE_MONO_OBJADDR:
12604                                 CHECK_STACK (1);
12605                                 --sp;
12606                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12607                                 ins->dreg = alloc_ireg_mp (cfg);
12608                                 ins->sreg1 = sp [0]->dreg;
12609                                 ins->type = STACK_MP;
12610                                 MONO_ADD_INS (cfg->cbb, ins);
12611                                 *sp++ = ins;
12612                                 ip += 2;
12613                                 break;
12614                         case CEE_MONO_LDNATIVEOBJ:
12615                                 /*
12616                                  * Similar to LDOBJ, but instead load the unmanaged
12617                                  * representation of the vtype to the stack.
12618                                  */
12619                                 CHECK_STACK (1);
12620                                 CHECK_OPSIZE (6);
12621                                 --sp;
12622                                 token = read32 (ip + 2);
12623                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12624                                 g_assert (klass->valuetype);
12625                                 mono_class_init (klass);
12626
12627                                 {
12628                                         MonoInst *src, *dest, *temp;
12629
12630                                         src = sp [0];
12631                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12632                                         temp->backend.is_pinvoke = 1;
12633                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12634                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12635
12636                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12637                                         dest->type = STACK_VTYPE;
12638                                         dest->klass = klass;
12639
12640                                         *sp ++ = dest;
12641                                         ip += 6;
12642                                 }
12643                                 break;
12644                         case CEE_MONO_RETOBJ: {
12645                                 /*
12646                                  * Same as RET, but return the native representation of a vtype
12647                                  * to the caller.
12648                                  */
12649                                 g_assert (cfg->ret);
12650                                 g_assert (mono_method_signature (method)->pinvoke);
12651                                 CHECK_STACK (1);
12652                                 --sp;
12653
12654                                 CHECK_OPSIZE (6);
12655                                 token = read32 (ip + 2);
12656                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12657
12658                                 if (!cfg->vret_addr) {
12659                                         g_assert (cfg->ret_var_is_local);
12660
12661                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12662                                 } else {
12663                                         EMIT_NEW_RETLOADA (cfg, ins);
12664                                 }
12665                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12666
12667                                 if (sp != stack_start)
12668                                         UNVERIFIED;
12669
12670                                 MONO_INST_NEW (cfg, ins, OP_BR);
12671                                 ins->inst_target_bb = end_bblock;
12672                                 MONO_ADD_INS (cfg->cbb, ins);
12673                                 link_bblock (cfg, cfg->cbb, end_bblock);
12674                                 start_new_bblock = 1;
12675                                 ip += 6;
12676                                 break;
12677                         }
12678                         case CEE_MONO_CISINST:
12679                         case CEE_MONO_CCASTCLASS: {
12680                                 int token;
12681                                 CHECK_STACK (1);
12682                                 --sp;
12683                                 CHECK_OPSIZE (6);
12684                                 token = read32 (ip + 2);
12685                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12686                                 if (ip [1] == CEE_MONO_CISINST)
12687                                         ins = handle_cisinst (cfg, klass, sp [0]);
12688                                 else
12689                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12690                                 *sp++ = ins;
12691                                 ip += 6;
12692                                 break;
12693                         }
12694                         case CEE_MONO_SAVE_LMF:
12695                         case CEE_MONO_RESTORE_LMF:
12696                                 ip += 2;
12697                                 break;
12698                         case CEE_MONO_CLASSCONST:
12699                                 CHECK_STACK_OVF (1);
12700                                 CHECK_OPSIZE (6);
12701                                 token = read32 (ip + 2);
12702                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12703                                 *sp++ = ins;
12704                                 ip += 6;
12705                                 inline_costs += 10 * num_calls++;
12706                                 break;
12707                         case CEE_MONO_NOT_TAKEN:
12708                                 cfg->cbb->out_of_line = TRUE;
12709                                 ip += 2;
12710                                 break;
12711                         case CEE_MONO_TLS: {
12712                                 MonoTlsKey key;
12713
12714                                 CHECK_STACK_OVF (1);
12715                                 CHECK_OPSIZE (6);
12716                                 key = (MonoTlsKey)read32 (ip + 2);
12717                                 g_assert (key < TLS_KEY_NUM);
12718
12719                                 ins = mono_create_tls_get (cfg, key);
12720                                 if (!ins) {
12721                                         if (cfg->compile_aot) {
12722                                                 DISABLE_AOT (cfg);
12723                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12724                                                 ins->dreg = alloc_preg (cfg);
12725                                                 ins->type = STACK_PTR;
12726                                         } else {
12727                                                 g_assert_not_reached ();
12728                                         }
12729                                 }
12730                                 ins->type = STACK_PTR;
12731                                 MONO_ADD_INS (cfg->cbb, ins);
12732                                 *sp++ = ins;
12733                                 ip += 6;
12734                                 break;
12735                         }
12736                         case CEE_MONO_DYN_CALL: {
12737                                 MonoCallInst *call;
12738
12739                                 /* It would be easier to call a trampoline, but that would put an
12740                                  * extra frame on the stack, confusing exception handling. So
12741                                  * implement it inline using an opcode for now.
12742                                  */
12743
12744                                 if (!cfg->dyn_call_var) {
12745                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12746                                         /* prevent it from being register allocated */
12747                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12748                                 }
12749
12750                                 /* Has to use a call inst since it local regalloc expects it */
12751                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12752                                 ins = (MonoInst*)call;
12753                                 sp -= 2;
12754                                 ins->sreg1 = sp [0]->dreg;
12755                                 ins->sreg2 = sp [1]->dreg;
12756                                 MONO_ADD_INS (cfg->cbb, ins);
12757
12758                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12759
12760                                 ip += 2;
12761                                 inline_costs += 10 * num_calls++;
12762
12763                                 break;
12764                         }
12765                         case CEE_MONO_MEMORY_BARRIER: {
12766                                 CHECK_OPSIZE (6);
12767                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12768                                 ip += 6;
12769                                 break;
12770                         }
12771                         case CEE_MONO_ATOMIC_STORE_I4: {
12772                                 g_assert (mono_arch_opcode_supported (OP_ATOMIC_STORE_I4));
12773
12774                                 CHECK_OPSIZE (6);
12775                                 CHECK_STACK (2);
12776                                 sp -= 2;
12777
12778                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_STORE_I4);
12779                                 ins->dreg = sp [0]->dreg;
12780                                 ins->sreg1 = sp [1]->dreg;
12781                                 ins->backend.memory_barrier_kind = (int) read32 (ip + 2);
12782                                 MONO_ADD_INS (cfg->cbb, ins);
12783
12784                                 ip += 6;
12785                                 break;
12786                         }
12787                         case CEE_MONO_JIT_ATTACH: {
12788                                 MonoInst *args [16], *domain_ins;
12789                                 MonoInst *ad_ins, *jit_tls_ins;
12790                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12791
12792                                 g_assert (!mono_threads_is_coop_enabled ());
12793
12794                                 cfg->orig_domain_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12795
12796                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12797                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12798
12799                                 ad_ins = mono_get_domain_intrinsic (cfg);
12800                                 jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12801
12802                                 if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12803                                         NEW_BBLOCK (cfg, next_bb);
12804                                         NEW_BBLOCK (cfg, call_bb);
12805
12806                                         if (cfg->compile_aot) {
12807                                                 /* AOT code is only used in the root domain */
12808                                                 EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12809                                         } else {
12810                                                 EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12811                                         }
12812                                         MONO_ADD_INS (cfg->cbb, ad_ins);
12813                                         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12814                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12815
12816                                         MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12817                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12818                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12819
12820                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12821                                         MONO_START_BB (cfg, call_bb);
12822                                 }
12823
12824                                 /* AOT code is only used in the root domain */
12825                                 EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12826                                 ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12827                                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->orig_domain_var->dreg, ins->dreg);
12828
12829                                 if (next_bb)
12830                                         MONO_START_BB (cfg, next_bb);
12831
12832
12833                                 ip += 2;
12834                                 break;
12835                         }
12836                         case CEE_MONO_JIT_DETACH: {
12837                                 MonoInst *args [16];
12838
12839                                 /* Restore the original domain */
12840                                 dreg = alloc_ireg (cfg);
12841                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->orig_domain_var->dreg);
12842                                 mono_emit_jit_icall (cfg, mono_jit_set_domain, args);
12843                                 ip += 2;
12844                                 break;
12845                         }
12846                         case CEE_MONO_CALLI_EXTRA_ARG: {
12847                                 MonoInst *addr;
12848                                 MonoMethodSignature *fsig;
12849                                 MonoInst *arg;
12850
12851                                 /*
12852                                  * This is the same as CEE_CALLI, but passes an additional argument
12853                                  * to the called method in llvmonly mode.
12854                                  * This is only used by delegate invoke wrappers to call the
12855                                  * actual delegate method.
12856                                  */
12857                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12858
12859                                 CHECK_OPSIZE (6);
12860                                 token = read32 (ip + 2);
12861
12862                                 ins = NULL;
12863
12864                                 cmethod = NULL;
12865                                 CHECK_STACK (1);
12866                                 --sp;
12867                                 addr = *sp;
12868                                 fsig = mini_get_signature (method, token, generic_context, &cfg->error);
12869                                 CHECK_CFG_ERROR;
12870
12871                                 if (cfg->llvm_only)
12872                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12873
12874                                 n = fsig->param_count + fsig->hasthis + 1;
12875
12876                                 CHECK_STACK (n);
12877
12878                                 sp -= n;
12879                                 arg = sp [n - 1];
12880
12881                                 if (cfg->llvm_only) {
12882                                         /*
12883                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12884                                          * cconv. This is set by mono_init_delegate ().
12885                                          */
12886                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12887                                                 MonoInst *callee = addr;
12888                                                 MonoInst *call, *localloc_ins;
12889                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12890                                                 int low_bit_reg = alloc_preg (cfg);
12891
12892                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12893                                                 NEW_BBLOCK (cfg, end_bb);
12894
12895                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12896                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12897                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12898
12899                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12900                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12901                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12902                                                 /*
12903                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12904                                                  */
12905                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12906                                                 ins->dreg = alloc_preg (cfg);
12907                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12908                                                 MONO_ADD_INS (cfg->cbb, ins);
12909                                                 localloc_ins = ins;
12910                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12911                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12912                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12913
12914                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12915                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12916
12917                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12918                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12919                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12920                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12921                                                 ins->dreg = call->dreg;
12922
12923                                                 MONO_START_BB (cfg, end_bb);
12924                                         } else {
12925                                                 /* Caller uses a normal calling conv */
12926
12927                                                 MonoInst *callee = addr;
12928                                                 MonoInst *call, *localloc_ins;
12929                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12930                                                 int low_bit_reg = alloc_preg (cfg);
12931
12932                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12933                                                 NEW_BBLOCK (cfg, end_bb);
12934
12935                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12936                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12937                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12938
12939                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12940                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12941                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12942                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12943                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12944                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12945                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12946                                                 MONO_ADD_INS (cfg->cbb, addr);
12947                                                 /*
12948                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12949                                                  */
12950                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12951                                                 ins->dreg = alloc_preg (cfg);
12952                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12953                                                 MONO_ADD_INS (cfg->cbb, ins);
12954                                                 localloc_ins = ins;
12955                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12956                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12957                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12958
12959                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12960                                                 ins->dreg = call->dreg;
12961                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12962
12963                                                 MONO_START_BB (cfg, end_bb);
12964                                         }
12965                                 } else {
12966                                         /* Same as CEE_CALLI */
12967                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12968                                                 /*
12969                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12970                                                  */
12971                                                 MonoInst *callee = addr;
12972
12973                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12974                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12975                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12976                                         } else {
12977                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12978                                         }
12979                                 }
12980
12981                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12982                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12983
12984                                 CHECK_CFG_EXCEPTION;
12985
12986                                 ip += 6;
12987                                 ins_flag = 0;
12988                                 constrained_class = NULL;
12989                                 break;
12990                         }
12991                         case CEE_MONO_LDDOMAIN:
12992                                 CHECK_STACK_OVF (1);
12993                                 EMIT_NEW_PCONST (cfg, ins, cfg->compile_aot ? NULL : cfg->domain);
12994                                 ip += 2;
12995                                 *sp++ = ins;
12996                                 break;
12997                         default:
12998                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12999                                 break;
13000                         }
13001                         break;
13002                 }
13003
13004                 case CEE_PREFIX1: {
13005                         CHECK_OPSIZE (2);
13006                         switch (ip [1]) {
13007                         case CEE_ARGLIST: {
13008                                 /* somewhat similar to LDTOKEN */
13009                                 MonoInst *addr, *vtvar;
13010                                 CHECK_STACK_OVF (1);
13011                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
13012
13013                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
13014                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
13015
13016                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
13017                                 ins->type = STACK_VTYPE;
13018                                 ins->klass = mono_defaults.argumenthandle_class;
13019                                 *sp++ = ins;
13020                                 ip += 2;
13021                                 break;
13022                         }
13023                         case CEE_CEQ:
13024                         case CEE_CGT:
13025                         case CEE_CGT_UN:
13026                         case CEE_CLT:
13027                         case CEE_CLT_UN: {
13028                                 MonoInst *cmp, *arg1, *arg2;
13029
13030                                 CHECK_STACK (2);
13031                                 sp -= 2;
13032                                 arg1 = sp [0];
13033                                 arg2 = sp [1];
13034
13035                                 /*
13036                                  * The following transforms:
13037                                  *    CEE_CEQ    into OP_CEQ
13038                                  *    CEE_CGT    into OP_CGT
13039                                  *    CEE_CGT_UN into OP_CGT_UN
13040                                  *    CEE_CLT    into OP_CLT
13041                                  *    CEE_CLT_UN into OP_CLT_UN
13042                                  */
13043                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13044
13045                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13046                                 cmp->sreg1 = arg1->dreg;
13047                                 cmp->sreg2 = arg2->dreg;
13048                                 type_from_op (cfg, cmp, arg1, arg2);
13049                                 CHECK_TYPE (cmp);
13050                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13051                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13052                                         cmp->opcode = OP_LCOMPARE;
13053                                 else if (arg1->type == STACK_R4)
13054                                         cmp->opcode = OP_RCOMPARE;
13055                                 else if (arg1->type == STACK_R8)
13056                                         cmp->opcode = OP_FCOMPARE;
13057                                 else
13058                                         cmp->opcode = OP_ICOMPARE;
13059                                 MONO_ADD_INS (cfg->cbb, cmp);
13060                                 ins->type = STACK_I4;
13061                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13062                                 type_from_op (cfg, ins, arg1, arg2);
13063
13064                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13065                                         /*
13066                                          * The backends expect the fceq opcodes to do the
13067                                          * comparison too.
13068                                          */
13069                                         ins->sreg1 = cmp->sreg1;
13070                                         ins->sreg2 = cmp->sreg2;
13071                                         NULLIFY_INS (cmp);
13072                                 }
13073                                 MONO_ADD_INS (cfg->cbb, ins);
13074                                 *sp++ = ins;
13075                                 ip += 2;
13076                                 break;
13077                         }
13078                         case CEE_LDFTN: {
13079                                 MonoInst *argconst;
13080                                 MonoMethod *cil_method;
13081
13082                                 CHECK_STACK_OVF (1);
13083                                 CHECK_OPSIZE (6);
13084                                 n = read32 (ip + 2);
13085                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13086                                 CHECK_CFG_ERROR;
13087
13088                                 mono_class_init (cmethod->klass);
13089
13090                                 mono_save_token_info (cfg, image, n, cmethod);
13091
13092                                 context_used = mini_method_check_context_used (cfg, cmethod);
13093
13094                                 cil_method = cmethod;
13095                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13096                                         emit_method_access_failure (cfg, method, cil_method);
13097
13098                                 if (mono_security_core_clr_enabled ())
13099                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13100
13101                                 /*
13102                                  * Optimize the common case of ldftn+delegate creation
13103                                  */
13104                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13105                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13106                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13107                                                 MonoInst *target_ins, *handle_ins;
13108                                                 MonoMethod *invoke;
13109                                                 int invoke_context_used;
13110
13111                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13112                                                 if (!invoke || !mono_method_signature (invoke))
13113                                                         LOAD_ERROR;
13114
13115                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13116
13117                                                 target_ins = sp [-1];
13118
13119                                                 if (mono_security_core_clr_enabled ())
13120                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13121
13122                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13123                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13124                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13125                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13126                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13127                                                         }
13128                                                 }
13129
13130                                                 /* FIXME: SGEN support */
13131                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13132                                                         ip += 6;
13133                                                         if (cfg->verbose_level > 3)
13134                                                                 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));
13135                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13136                                                                 sp --;
13137                                                                 *sp = handle_ins;
13138                                                                 CHECK_CFG_EXCEPTION;
13139                                                                 ip += 5;
13140                                                                 sp ++;
13141                                                                 break;
13142                                                         }
13143                                                         ip -= 6;
13144                                                 }
13145                                         }
13146                                 }
13147
13148                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13149                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13150                                 *sp++ = ins;
13151
13152                                 ip += 6;
13153                                 inline_costs += 10 * num_calls++;
13154                                 break;
13155                         }
13156                         case CEE_LDVIRTFTN: {
13157                                 MonoInst *args [2];
13158
13159                                 CHECK_STACK (1);
13160                                 CHECK_OPSIZE (6);
13161                                 n = read32 (ip + 2);
13162                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13163                                 CHECK_CFG_ERROR;
13164
13165                                 mono_class_init (cmethod->klass);
13166
13167                                 context_used = mini_method_check_context_used (cfg, cmethod);
13168
13169                                 if (mono_security_core_clr_enabled ())
13170                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13171
13172                                 /*
13173                                  * Optimize the common case of ldvirtftn+delegate creation
13174                                  */
13175                                 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)) {
13176                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13177                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13178                                                 MonoInst *target_ins, *handle_ins;
13179                                                 MonoMethod *invoke;
13180                                                 int invoke_context_used;
13181                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13182
13183                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13184                                                 if (!invoke || !mono_method_signature (invoke))
13185                                                         LOAD_ERROR;
13186
13187                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13188
13189                                                 target_ins = sp [-1];
13190
13191                                                 if (mono_security_core_clr_enabled ())
13192                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13193
13194                                                 /* FIXME: SGEN support */
13195                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13196                                                         ip += 6;
13197                                                         if (cfg->verbose_level > 3)
13198                                                                 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));
13199                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13200                                                                 sp -= 2;
13201                                                                 *sp = handle_ins;
13202                                                                 CHECK_CFG_EXCEPTION;
13203                                                                 ip += 5;
13204                                                                 sp ++;
13205                                                                 break;
13206                                                         }
13207                                                         ip -= 6;
13208                                                 }
13209                                         }
13210                                 }
13211
13212                                 --sp;
13213                                 args [0] = *sp;
13214
13215                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13216                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13217
13218                                 if (context_used)
13219                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13220                                 else
13221                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13222
13223                                 ip += 6;
13224                                 inline_costs += 10 * num_calls++;
13225                                 break;
13226                         }
13227                         case CEE_LDARG:
13228                                 CHECK_STACK_OVF (1);
13229                                 CHECK_OPSIZE (4);
13230                                 n = read16 (ip + 2);
13231                                 CHECK_ARG (n);
13232                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13233                                 *sp++ = ins;
13234                                 ip += 4;
13235                                 break;
13236                         case CEE_LDARGA:
13237                                 CHECK_STACK_OVF (1);
13238                                 CHECK_OPSIZE (4);
13239                                 n = read16 (ip + 2);
13240                                 CHECK_ARG (n);
13241                                 NEW_ARGLOADA (cfg, ins, n);
13242                                 MONO_ADD_INS (cfg->cbb, ins);
13243                                 *sp++ = ins;
13244                                 ip += 4;
13245                                 break;
13246                         case CEE_STARG:
13247                                 CHECK_STACK (1);
13248                                 --sp;
13249                                 CHECK_OPSIZE (4);
13250                                 n = read16 (ip + 2);
13251                                 CHECK_ARG (n);
13252                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13253                                         UNVERIFIED;
13254                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13255                                 ip += 4;
13256                                 break;
13257                         case CEE_LDLOC:
13258                                 CHECK_STACK_OVF (1);
13259                                 CHECK_OPSIZE (4);
13260                                 n = read16 (ip + 2);
13261                                 CHECK_LOCAL (n);
13262                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13263                                 *sp++ = ins;
13264                                 ip += 4;
13265                                 break;
13266                         case CEE_LDLOCA: {
13267                                 unsigned char *tmp_ip;
13268                                 CHECK_STACK_OVF (1);
13269                                 CHECK_OPSIZE (4);
13270                                 n = read16 (ip + 2);
13271                                 CHECK_LOCAL (n);
13272
13273                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13274                                         ip = tmp_ip;
13275                                         inline_costs += 1;
13276                                         break;
13277                                 }
13278
13279                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13280                                 *sp++ = ins;
13281                                 ip += 4;
13282                                 break;
13283                         }
13284                         case CEE_STLOC:
13285                                 CHECK_STACK (1);
13286                                 --sp;
13287                                 CHECK_OPSIZE (4);
13288                                 n = read16 (ip + 2);
13289                                 CHECK_LOCAL (n);
13290                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13291                                         UNVERIFIED;
13292                                 emit_stloc_ir (cfg, sp, header, n);
13293                                 ip += 4;
13294                                 inline_costs += 1;
13295                                 break;
13296                         case CEE_LOCALLOC:
13297                                 CHECK_STACK (1);
13298                                 --sp;
13299                                 if (sp != stack_start)
13300                                         UNVERIFIED;
13301                                 if (cfg->method != method)
13302                                         /*
13303                                          * Inlining this into a loop in a parent could lead to
13304                                          * stack overflows which is different behavior than the
13305                                          * non-inlined case, thus disable inlining in this case.
13306                                          */
13307                                         INLINE_FAILURE("localloc");
13308
13309                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13310                                 ins->dreg = alloc_preg (cfg);
13311                                 ins->sreg1 = sp [0]->dreg;
13312                                 ins->type = STACK_PTR;
13313                                 MONO_ADD_INS (cfg->cbb, ins);
13314
13315                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13316                                 if (init_locals)
13317                                         ins->flags |= MONO_INST_INIT;
13318
13319                                 *sp++ = ins;
13320                                 ip += 2;
13321                                 break;
13322                         case CEE_ENDFILTER: {
13323                                 MonoExceptionClause *clause, *nearest;
13324                                 int cc;
13325
13326                                 CHECK_STACK (1);
13327                                 --sp;
13328                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13329                                         UNVERIFIED;
13330                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13331                                 ins->sreg1 = (*sp)->dreg;
13332                                 MONO_ADD_INS (cfg->cbb, ins);
13333                                 start_new_bblock = 1;
13334                                 ip += 2;
13335
13336                                 nearest = NULL;
13337                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13338                                         clause = &header->clauses [cc];
13339                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13340                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13341                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13342                                                 nearest = clause;
13343                                 }
13344                                 g_assert (nearest);
13345                                 if ((ip - header->code) != nearest->handler_offset)
13346                                         UNVERIFIED;
13347
13348                                 break;
13349                         }
13350                         case CEE_UNALIGNED_:
13351                                 ins_flag |= MONO_INST_UNALIGNED;
13352                                 /* FIXME: record alignment? we can assume 1 for now */
13353                                 CHECK_OPSIZE (3);
13354                                 ip += 3;
13355                                 break;
13356                         case CEE_VOLATILE_:
13357                                 ins_flag |= MONO_INST_VOLATILE;
13358                                 ip += 2;
13359                                 break;
13360                         case CEE_TAIL_:
13361                                 ins_flag   |= MONO_INST_TAILCALL;
13362                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13363                                 /* Can't inline tail calls at this time */
13364                                 inline_costs += 100000;
13365                                 ip += 2;
13366                                 break;
13367                         case CEE_INITOBJ:
13368                                 CHECK_STACK (1);
13369                                 --sp;
13370                                 CHECK_OPSIZE (6);
13371                                 token = read32 (ip + 2);
13372                                 klass = mini_get_class (method, token, generic_context);
13373                                 CHECK_TYPELOAD (klass);
13374                                 if (generic_class_is_reference_type (cfg, klass))
13375                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13376                                 else
13377                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13378                                 ip += 6;
13379                                 inline_costs += 1;
13380                                 break;
13381                         case CEE_CONSTRAINED_:
13382                                 CHECK_OPSIZE (6);
13383                                 token = read32 (ip + 2);
13384                                 constrained_class = mini_get_class (method, token, generic_context);
13385                                 CHECK_TYPELOAD (constrained_class);
13386                                 ip += 6;
13387                                 break;
13388                         case CEE_CPBLK:
13389                         case CEE_INITBLK: {
13390                                 MonoInst *iargs [3];
13391                                 CHECK_STACK (3);
13392                                 sp -= 3;
13393
13394                                 /* Skip optimized paths for volatile operations. */
13395                                 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)) {
13396                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13397                                 } 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)) {
13398                                         /* emit_memset only works when val == 0 */
13399                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13400                                 } else {
13401                                         MonoInst *call;
13402                                         iargs [0] = sp [0];
13403                                         iargs [1] = sp [1];
13404                                         iargs [2] = sp [2];
13405                                         if (ip [1] == CEE_CPBLK) {
13406                                                 /*
13407                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13408                                                  * and release barriers for cpblk. It is technically both a load and
13409                                                  * store operation, so it seems like that's the sensible thing to do.
13410                                                  *
13411                                                  * FIXME: We emit full barriers on both sides of the operation for
13412                                                  * simplicity. We should have a separate atomic memcpy method instead.
13413                                                  */
13414                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13415
13416                                                 if (ins_flag & MONO_INST_VOLATILE)
13417                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13418
13419                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13420                                                 call->flags |= ins_flag;
13421
13422                                                 if (ins_flag & MONO_INST_VOLATILE)
13423                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13424                                         } else {
13425                                                 MonoMethod *memset_method = get_memset_method ();
13426                                                 if (ins_flag & MONO_INST_VOLATILE) {
13427                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13428                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13429                                                 }
13430                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13431                                                 call->flags |= ins_flag;
13432                                         }
13433                                 }
13434                                 ip += 2;
13435                                 ins_flag = 0;
13436                                 inline_costs += 1;
13437                                 break;
13438                         }
13439                         case CEE_NO_:
13440                                 CHECK_OPSIZE (3);
13441                                 if (ip [2] & 0x1)
13442                                         ins_flag |= MONO_INST_NOTYPECHECK;
13443                                 if (ip [2] & 0x2)
13444                                         ins_flag |= MONO_INST_NORANGECHECK;
13445                                 /* we ignore the no-nullcheck for now since we
13446                                  * really do it explicitly only when doing callvirt->call
13447                                  */
13448                                 ip += 3;
13449                                 break;
13450                         case CEE_RETHROW: {
13451                                 MonoInst *load;
13452                                 int handler_offset = -1;
13453
13454                                 for (i = 0; i < header->num_clauses; ++i) {
13455                                         MonoExceptionClause *clause = &header->clauses [i];
13456                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13457                                                 handler_offset = clause->handler_offset;
13458                                                 break;
13459                                         }
13460                                 }
13461
13462                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13463
13464                                 if (handler_offset == -1)
13465                                         UNVERIFIED;
13466
13467                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13468                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13469                                 ins->sreg1 = load->dreg;
13470                                 MONO_ADD_INS (cfg->cbb, ins);
13471
13472                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13473                                 MONO_ADD_INS (cfg->cbb, ins);
13474
13475                                 sp = stack_start;
13476                                 link_bblock (cfg, cfg->cbb, end_bblock);
13477                                 start_new_bblock = 1;
13478                                 ip += 2;
13479                                 break;
13480                         }
13481                         case CEE_SIZEOF: {
13482                                 guint32 val;
13483                                 int ialign;
13484
13485                                 CHECK_STACK_OVF (1);
13486                                 CHECK_OPSIZE (6);
13487                                 token = read32 (ip + 2);
13488                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13489                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13490                                         CHECK_CFG_ERROR;
13491
13492                                         val = mono_type_size (type, &ialign);
13493                                 } else {
13494                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13495                                         CHECK_TYPELOAD (klass);
13496
13497                                         val = mono_type_size (&klass->byval_arg, &ialign);
13498
13499                                         if (mini_is_gsharedvt_klass (klass))
13500                                                 GSHAREDVT_FAILURE (*ip);
13501                                 }
13502                                 EMIT_NEW_ICONST (cfg, ins, val);
13503                                 *sp++= ins;
13504                                 ip += 6;
13505                                 break;
13506                         }
13507                         case CEE_REFANYTYPE: {
13508                                 MonoInst *src_var, *src;
13509
13510                                 GSHAREDVT_FAILURE (*ip);
13511
13512                                 CHECK_STACK (1);
13513                                 --sp;
13514
13515                                 // FIXME:
13516                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13517                                 if (!src_var)
13518                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13519                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13520                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13521                                 *sp++ = ins;
13522                                 ip += 2;
13523                                 break;
13524                         }
13525                         case CEE_READONLY_:
13526                                 readonly = TRUE;
13527                                 ip += 2;
13528                                 break;
13529
13530                         case CEE_UNUSED56:
13531                         case CEE_UNUSED57:
13532                         case CEE_UNUSED70:
13533                         case CEE_UNUSED:
13534                         case CEE_UNUSED99:
13535                                 UNVERIFIED;
13536
13537                         default:
13538                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13539                                 UNVERIFIED;
13540                         }
13541                         break;
13542                 }
13543                 case CEE_UNUSED58:
13544                 case CEE_UNUSED1:
13545                         UNVERIFIED;
13546
13547                 default:
13548                         g_warning ("opcode 0x%02x not handled", *ip);
13549                         UNVERIFIED;
13550                 }
13551         }
13552         if (start_new_bblock != 1)
13553                 UNVERIFIED;
13554
13555         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13556         if (cfg->cbb->next_bb) {
13557                 /* This could already be set because of inlining, #693905 */
13558                 MonoBasicBlock *bb = cfg->cbb;
13559
13560                 while (bb->next_bb)
13561                         bb = bb->next_bb;
13562                 bb->next_bb = end_bblock;
13563         } else {
13564                 cfg->cbb->next_bb = end_bblock;
13565         }
13566
13567         if (cfg->method == method && cfg->domainvar) {
13568                 MonoInst *store;
13569                 MonoInst *get_domain;
13570
13571                 cfg->cbb = init_localsbb;
13572
13573                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13574                         MONO_ADD_INS (cfg->cbb, get_domain);
13575                 } else {
13576                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13577                 }
13578                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13579                 MONO_ADD_INS (cfg->cbb, store);
13580         }
13581
13582 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13583         if (cfg->compile_aot)
13584                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13585                 mono_get_got_var (cfg);
13586 #endif
13587
13588         if (cfg->method == method && cfg->got_var)
13589                 mono_emit_load_got_addr (cfg);
13590
13591         if (init_localsbb) {
13592                 cfg->cbb = init_localsbb;
13593                 cfg->ip = NULL;
13594                 for (i = 0; i < header->num_locals; ++i) {
13595                         emit_init_local (cfg, i, header->locals [i], init_locals);
13596                 }
13597         }
13598
13599         if (cfg->init_ref_vars && cfg->method == method) {
13600                 /* Emit initialization for ref vars */
13601                 // FIXME: Avoid duplication initialization for IL locals.
13602                 for (i = 0; i < cfg->num_varinfo; ++i) {
13603                         MonoInst *ins = cfg->varinfo [i];
13604
13605                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13606                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13607                 }
13608         }
13609
13610         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13611                 cfg->cbb = init_localsbb;
13612                 emit_push_lmf (cfg);
13613         }
13614
13615         cfg->cbb = init_localsbb;
13616         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13617
13618         if (seq_points) {
13619                 MonoBasicBlock *bb;
13620
13621                 /*
13622                  * Make seq points at backward branch targets interruptable.
13623                  */
13624                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13625                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13626                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13627         }
13628
13629         /* Add a sequence point for method entry/exit events */
13630         if (seq_points && cfg->gen_sdb_seq_points) {
13631                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13632                 MONO_ADD_INS (init_localsbb, ins);
13633                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13634                 MONO_ADD_INS (cfg->bb_exit, ins);
13635         }
13636
13637         /*
13638          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13639          * the code they refer to was dead (#11880).
13640          */
13641         if (sym_seq_points) {
13642                 for (i = 0; i < header->code_size; ++i) {
13643                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13644                                 MonoInst *ins;
13645
13646                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13647                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13648                         }
13649                 }
13650         }
13651
13652         cfg->ip = NULL;
13653
13654         if (cfg->method == method) {
13655                 MonoBasicBlock *bb;
13656                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13657                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13658                         if (cfg->spvars)
13659                                 mono_create_spvar_for_region (cfg, bb->region);
13660                         if (cfg->verbose_level > 2)
13661                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13662                 }
13663         } else {
13664                 MonoBasicBlock *bb;
13665                 /* get_most_deep_clause () in mini-llvm.c depends on this for inlined bblocks */
13666                 for (bb = start_bblock; bb != end_bblock; bb  = bb->next_bb) {
13667                         bb->real_offset = inline_offset;
13668                 }
13669         }
13670
13671         if (inline_costs < 0) {
13672                 char *mname;
13673
13674                 /* Method is too large */
13675                 mname = mono_method_full_name (method, TRUE);
13676                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13677                 g_free (mname);
13678         }
13679
13680         if ((cfg->verbose_level > 2) && (cfg->method == method))
13681                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13682
13683         goto cleanup;
13684
13685 mono_error_exit:
13686         g_assert (!mono_error_ok (&cfg->error));
13687         goto cleanup;
13688
13689  exception_exit:
13690         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13691         goto cleanup;
13692
13693  unverified:
13694         set_exception_type_from_invalid_il (cfg, method, ip);
13695         goto cleanup;
13696
13697  cleanup:
13698         g_slist_free (class_inits);
13699         mono_basic_block_free (original_bb);
13700         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13701         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13702         if (cfg->exception_type)
13703                 return -1;
13704         else
13705                 return inline_costs;
13706 }
13707
13708 static int
13709 store_membase_reg_to_store_membase_imm (int opcode)
13710 {
13711         switch (opcode) {
13712         case OP_STORE_MEMBASE_REG:
13713                 return OP_STORE_MEMBASE_IMM;
13714         case OP_STOREI1_MEMBASE_REG:
13715                 return OP_STOREI1_MEMBASE_IMM;
13716         case OP_STOREI2_MEMBASE_REG:
13717                 return OP_STOREI2_MEMBASE_IMM;
13718         case OP_STOREI4_MEMBASE_REG:
13719                 return OP_STOREI4_MEMBASE_IMM;
13720         case OP_STOREI8_MEMBASE_REG:
13721                 return OP_STOREI8_MEMBASE_IMM;
13722         default:
13723                 g_assert_not_reached ();
13724         }
13725
13726         return -1;
13727 }
13728
13729 int
13730 mono_op_to_op_imm (int opcode)
13731 {
13732         switch (opcode) {
13733         case OP_IADD:
13734                 return OP_IADD_IMM;
13735         case OP_ISUB:
13736                 return OP_ISUB_IMM;
13737         case OP_IDIV:
13738                 return OP_IDIV_IMM;
13739         case OP_IDIV_UN:
13740                 return OP_IDIV_UN_IMM;
13741         case OP_IREM:
13742                 return OP_IREM_IMM;
13743         case OP_IREM_UN:
13744                 return OP_IREM_UN_IMM;
13745         case OP_IMUL:
13746                 return OP_IMUL_IMM;
13747         case OP_IAND:
13748                 return OP_IAND_IMM;
13749         case OP_IOR:
13750                 return OP_IOR_IMM;
13751         case OP_IXOR:
13752                 return OP_IXOR_IMM;
13753         case OP_ISHL:
13754                 return OP_ISHL_IMM;
13755         case OP_ISHR:
13756                 return OP_ISHR_IMM;
13757         case OP_ISHR_UN:
13758                 return OP_ISHR_UN_IMM;
13759
13760         case OP_LADD:
13761                 return OP_LADD_IMM;
13762         case OP_LSUB:
13763                 return OP_LSUB_IMM;
13764         case OP_LAND:
13765                 return OP_LAND_IMM;
13766         case OP_LOR:
13767                 return OP_LOR_IMM;
13768         case OP_LXOR:
13769                 return OP_LXOR_IMM;
13770         case OP_LSHL:
13771                 return OP_LSHL_IMM;
13772         case OP_LSHR:
13773                 return OP_LSHR_IMM;
13774         case OP_LSHR_UN:
13775                 return OP_LSHR_UN_IMM;
13776 #if SIZEOF_REGISTER == 8
13777         case OP_LREM:
13778                 return OP_LREM_IMM;
13779 #endif
13780
13781         case OP_COMPARE:
13782                 return OP_COMPARE_IMM;
13783         case OP_ICOMPARE:
13784                 return OP_ICOMPARE_IMM;
13785         case OP_LCOMPARE:
13786                 return OP_LCOMPARE_IMM;
13787
13788         case OP_STORE_MEMBASE_REG:
13789                 return OP_STORE_MEMBASE_IMM;
13790         case OP_STOREI1_MEMBASE_REG:
13791                 return OP_STOREI1_MEMBASE_IMM;
13792         case OP_STOREI2_MEMBASE_REG:
13793                 return OP_STOREI2_MEMBASE_IMM;
13794         case OP_STOREI4_MEMBASE_REG:
13795                 return OP_STOREI4_MEMBASE_IMM;
13796
13797 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13798         case OP_X86_PUSH:
13799                 return OP_X86_PUSH_IMM;
13800         case OP_X86_COMPARE_MEMBASE_REG:
13801                 return OP_X86_COMPARE_MEMBASE_IMM;
13802 #endif
13803 #if defined(TARGET_AMD64)
13804         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13805                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13806 #endif
13807         case OP_VOIDCALL_REG:
13808                 return OP_VOIDCALL;
13809         case OP_CALL_REG:
13810                 return OP_CALL;
13811         case OP_LCALL_REG:
13812                 return OP_LCALL;
13813         case OP_FCALL_REG:
13814                 return OP_FCALL;
13815         case OP_LOCALLOC:
13816                 return OP_LOCALLOC_IMM;
13817         }
13818
13819         return -1;
13820 }
13821
13822 static int
13823 ldind_to_load_membase (int opcode)
13824 {
13825         switch (opcode) {
13826         case CEE_LDIND_I1:
13827                 return OP_LOADI1_MEMBASE;
13828         case CEE_LDIND_U1:
13829                 return OP_LOADU1_MEMBASE;
13830         case CEE_LDIND_I2:
13831                 return OP_LOADI2_MEMBASE;
13832         case CEE_LDIND_U2:
13833                 return OP_LOADU2_MEMBASE;
13834         case CEE_LDIND_I4:
13835                 return OP_LOADI4_MEMBASE;
13836         case CEE_LDIND_U4:
13837                 return OP_LOADU4_MEMBASE;
13838         case CEE_LDIND_I:
13839                 return OP_LOAD_MEMBASE;
13840         case CEE_LDIND_REF:
13841                 return OP_LOAD_MEMBASE;
13842         case CEE_LDIND_I8:
13843                 return OP_LOADI8_MEMBASE;
13844         case CEE_LDIND_R4:
13845                 return OP_LOADR4_MEMBASE;
13846         case CEE_LDIND_R8:
13847                 return OP_LOADR8_MEMBASE;
13848         default:
13849                 g_assert_not_reached ();
13850         }
13851
13852         return -1;
13853 }
13854
13855 static int
13856 stind_to_store_membase (int opcode)
13857 {
13858         switch (opcode) {
13859         case CEE_STIND_I1:
13860                 return OP_STOREI1_MEMBASE_REG;
13861         case CEE_STIND_I2:
13862                 return OP_STOREI2_MEMBASE_REG;
13863         case CEE_STIND_I4:
13864                 return OP_STOREI4_MEMBASE_REG;
13865         case CEE_STIND_I:
13866         case CEE_STIND_REF:
13867                 return OP_STORE_MEMBASE_REG;
13868         case CEE_STIND_I8:
13869                 return OP_STOREI8_MEMBASE_REG;
13870         case CEE_STIND_R4:
13871                 return OP_STORER4_MEMBASE_REG;
13872         case CEE_STIND_R8:
13873                 return OP_STORER8_MEMBASE_REG;
13874         default:
13875                 g_assert_not_reached ();
13876         }
13877
13878         return -1;
13879 }
13880
13881 int
13882 mono_load_membase_to_load_mem (int opcode)
13883 {
13884         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13885 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13886         switch (opcode) {
13887         case OP_LOAD_MEMBASE:
13888                 return OP_LOAD_MEM;
13889         case OP_LOADU1_MEMBASE:
13890                 return OP_LOADU1_MEM;
13891         case OP_LOADU2_MEMBASE:
13892                 return OP_LOADU2_MEM;
13893         case OP_LOADI4_MEMBASE:
13894                 return OP_LOADI4_MEM;
13895         case OP_LOADU4_MEMBASE:
13896                 return OP_LOADU4_MEM;
13897 #if SIZEOF_REGISTER == 8
13898         case OP_LOADI8_MEMBASE:
13899                 return OP_LOADI8_MEM;
13900 #endif
13901         }
13902 #endif
13903
13904         return -1;
13905 }
13906
13907 static inline int
13908 op_to_op_dest_membase (int store_opcode, int opcode)
13909 {
13910 #if defined(TARGET_X86)
13911         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13912                 return -1;
13913
13914         switch (opcode) {
13915         case OP_IADD:
13916                 return OP_X86_ADD_MEMBASE_REG;
13917         case OP_ISUB:
13918                 return OP_X86_SUB_MEMBASE_REG;
13919         case OP_IAND:
13920                 return OP_X86_AND_MEMBASE_REG;
13921         case OP_IOR:
13922                 return OP_X86_OR_MEMBASE_REG;
13923         case OP_IXOR:
13924                 return OP_X86_XOR_MEMBASE_REG;
13925         case OP_ADD_IMM:
13926         case OP_IADD_IMM:
13927                 return OP_X86_ADD_MEMBASE_IMM;
13928         case OP_SUB_IMM:
13929         case OP_ISUB_IMM:
13930                 return OP_X86_SUB_MEMBASE_IMM;
13931         case OP_AND_IMM:
13932         case OP_IAND_IMM:
13933                 return OP_X86_AND_MEMBASE_IMM;
13934         case OP_OR_IMM:
13935         case OP_IOR_IMM:
13936                 return OP_X86_OR_MEMBASE_IMM;
13937         case OP_XOR_IMM:
13938         case OP_IXOR_IMM:
13939                 return OP_X86_XOR_MEMBASE_IMM;
13940         case OP_MOVE:
13941                 return OP_NOP;
13942         }
13943 #endif
13944
13945 #if defined(TARGET_AMD64)
13946         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13947                 return -1;
13948
13949         switch (opcode) {
13950         case OP_IADD:
13951                 return OP_X86_ADD_MEMBASE_REG;
13952         case OP_ISUB:
13953                 return OP_X86_SUB_MEMBASE_REG;
13954         case OP_IAND:
13955                 return OP_X86_AND_MEMBASE_REG;
13956         case OP_IOR:
13957                 return OP_X86_OR_MEMBASE_REG;
13958         case OP_IXOR:
13959                 return OP_X86_XOR_MEMBASE_REG;
13960         case OP_IADD_IMM:
13961                 return OP_X86_ADD_MEMBASE_IMM;
13962         case OP_ISUB_IMM:
13963                 return OP_X86_SUB_MEMBASE_IMM;
13964         case OP_IAND_IMM:
13965                 return OP_X86_AND_MEMBASE_IMM;
13966         case OP_IOR_IMM:
13967                 return OP_X86_OR_MEMBASE_IMM;
13968         case OP_IXOR_IMM:
13969                 return OP_X86_XOR_MEMBASE_IMM;
13970         case OP_LADD:
13971                 return OP_AMD64_ADD_MEMBASE_REG;
13972         case OP_LSUB:
13973                 return OP_AMD64_SUB_MEMBASE_REG;
13974         case OP_LAND:
13975                 return OP_AMD64_AND_MEMBASE_REG;
13976         case OP_LOR:
13977                 return OP_AMD64_OR_MEMBASE_REG;
13978         case OP_LXOR:
13979                 return OP_AMD64_XOR_MEMBASE_REG;
13980         case OP_ADD_IMM:
13981         case OP_LADD_IMM:
13982                 return OP_AMD64_ADD_MEMBASE_IMM;
13983         case OP_SUB_IMM:
13984         case OP_LSUB_IMM:
13985                 return OP_AMD64_SUB_MEMBASE_IMM;
13986         case OP_AND_IMM:
13987         case OP_LAND_IMM:
13988                 return OP_AMD64_AND_MEMBASE_IMM;
13989         case OP_OR_IMM:
13990         case OP_LOR_IMM:
13991                 return OP_AMD64_OR_MEMBASE_IMM;
13992         case OP_XOR_IMM:
13993         case OP_LXOR_IMM:
13994                 return OP_AMD64_XOR_MEMBASE_IMM;
13995         case OP_MOVE:
13996                 return OP_NOP;
13997         }
13998 #endif
13999
14000         return -1;
14001 }
14002
14003 static inline int
14004 op_to_op_store_membase (int store_opcode, int opcode)
14005 {
14006 #if defined(TARGET_X86) || defined(TARGET_AMD64)
14007         switch (opcode) {
14008         case OP_ICEQ:
14009                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14010                         return OP_X86_SETEQ_MEMBASE;
14011         case OP_CNE:
14012                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
14013                         return OP_X86_SETNE_MEMBASE;
14014         }
14015 #endif
14016
14017         return -1;
14018 }
14019
14020 static inline int
14021 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
14022 {
14023 #ifdef TARGET_X86
14024         /* FIXME: This has sign extension issues */
14025         /*
14026         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14027                 return OP_X86_COMPARE_MEMBASE8_IMM;
14028         */
14029
14030         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14031                 return -1;
14032
14033         switch (opcode) {
14034         case OP_X86_PUSH:
14035                 return OP_X86_PUSH_MEMBASE;
14036         case OP_COMPARE_IMM:
14037         case OP_ICOMPARE_IMM:
14038                 return OP_X86_COMPARE_MEMBASE_IMM;
14039         case OP_COMPARE:
14040         case OP_ICOMPARE:
14041                 return OP_X86_COMPARE_MEMBASE_REG;
14042         }
14043 #endif
14044
14045 #ifdef TARGET_AMD64
14046         /* FIXME: This has sign extension issues */
14047         /*
14048         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14049                 return OP_X86_COMPARE_MEMBASE8_IMM;
14050         */
14051
14052         switch (opcode) {
14053         case OP_X86_PUSH:
14054                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14055                         return OP_X86_PUSH_MEMBASE;
14056                 break;
14057                 /* FIXME: This only works for 32 bit immediates
14058         case OP_COMPARE_IMM:
14059         case OP_LCOMPARE_IMM:
14060                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14061                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14062                 */
14063         case OP_ICOMPARE_IMM:
14064                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14065                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14066                 break;
14067         case OP_COMPARE:
14068         case OP_LCOMPARE:
14069                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14070                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14071                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14072                         return OP_AMD64_COMPARE_MEMBASE_REG;
14073                 break;
14074         case OP_ICOMPARE:
14075                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14076                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14077                 break;
14078         }
14079 #endif
14080
14081         return -1;
14082 }
14083
14084 static inline int
14085 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14086 {
14087 #ifdef TARGET_X86
14088         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14089                 return -1;
14090
14091         switch (opcode) {
14092         case OP_COMPARE:
14093         case OP_ICOMPARE:
14094                 return OP_X86_COMPARE_REG_MEMBASE;
14095         case OP_IADD:
14096                 return OP_X86_ADD_REG_MEMBASE;
14097         case OP_ISUB:
14098                 return OP_X86_SUB_REG_MEMBASE;
14099         case OP_IAND:
14100                 return OP_X86_AND_REG_MEMBASE;
14101         case OP_IOR:
14102                 return OP_X86_OR_REG_MEMBASE;
14103         case OP_IXOR:
14104                 return OP_X86_XOR_REG_MEMBASE;
14105         }
14106 #endif
14107
14108 #ifdef TARGET_AMD64
14109         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14110                 switch (opcode) {
14111                 case OP_ICOMPARE:
14112                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14113                 case OP_IADD:
14114                         return OP_X86_ADD_REG_MEMBASE;
14115                 case OP_ISUB:
14116                         return OP_X86_SUB_REG_MEMBASE;
14117                 case OP_IAND:
14118                         return OP_X86_AND_REG_MEMBASE;
14119                 case OP_IOR:
14120                         return OP_X86_OR_REG_MEMBASE;
14121                 case OP_IXOR:
14122                         return OP_X86_XOR_REG_MEMBASE;
14123                 }
14124         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14125                 switch (opcode) {
14126                 case OP_COMPARE:
14127                 case OP_LCOMPARE:
14128                         return OP_AMD64_COMPARE_REG_MEMBASE;
14129                 case OP_LADD:
14130                         return OP_AMD64_ADD_REG_MEMBASE;
14131                 case OP_LSUB:
14132                         return OP_AMD64_SUB_REG_MEMBASE;
14133                 case OP_LAND:
14134                         return OP_AMD64_AND_REG_MEMBASE;
14135                 case OP_LOR:
14136                         return OP_AMD64_OR_REG_MEMBASE;
14137                 case OP_LXOR:
14138                         return OP_AMD64_XOR_REG_MEMBASE;
14139                 }
14140         }
14141 #endif
14142
14143         return -1;
14144 }
14145
14146 int
14147 mono_op_to_op_imm_noemul (int opcode)
14148 {
14149         switch (opcode) {
14150 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14151         case OP_LSHR:
14152         case OP_LSHL:
14153         case OP_LSHR_UN:
14154                 return -1;
14155 #endif
14156 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14157         case OP_IDIV:
14158         case OP_IDIV_UN:
14159         case OP_IREM:
14160         case OP_IREM_UN:
14161                 return -1;
14162 #endif
14163 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14164         case OP_IMUL:
14165                 return -1;
14166 #endif
14167         default:
14168                 return mono_op_to_op_imm (opcode);
14169         }
14170 }
14171
14172 /**
14173  * mono_handle_global_vregs:
14174  *
14175  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14176  * for them.
14177  */
14178 void
14179 mono_handle_global_vregs (MonoCompile *cfg)
14180 {
14181         gint32 *vreg_to_bb;
14182         MonoBasicBlock *bb;
14183         int i, pos;
14184
14185         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14186
14187 #ifdef MONO_ARCH_SIMD_INTRINSICS
14188         if (cfg->uses_simd_intrinsics)
14189                 mono_simd_simplify_indirection (cfg);
14190 #endif
14191
14192         /* Find local vregs used in more than one bb */
14193         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14194                 MonoInst *ins = bb->code;
14195                 int block_num = bb->block_num;
14196
14197                 if (cfg->verbose_level > 2)
14198                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14199
14200                 cfg->cbb = bb;
14201                 for (; ins; ins = ins->next) {
14202                         const char *spec = INS_INFO (ins->opcode);
14203                         int regtype = 0, regindex;
14204                         gint32 prev_bb;
14205
14206                         if (G_UNLIKELY (cfg->verbose_level > 2))
14207                                 mono_print_ins (ins);
14208
14209                         g_assert (ins->opcode >= MONO_CEE_LAST);
14210
14211                         for (regindex = 0; regindex < 4; regindex ++) {
14212                                 int vreg = 0;
14213
14214                                 if (regindex == 0) {
14215                                         regtype = spec [MONO_INST_DEST];
14216                                         if (regtype == ' ')
14217                                                 continue;
14218                                         vreg = ins->dreg;
14219                                 } else if (regindex == 1) {
14220                                         regtype = spec [MONO_INST_SRC1];
14221                                         if (regtype == ' ')
14222                                                 continue;
14223                                         vreg = ins->sreg1;
14224                                 } else if (regindex == 2) {
14225                                         regtype = spec [MONO_INST_SRC2];
14226                                         if (regtype == ' ')
14227                                                 continue;
14228                                         vreg = ins->sreg2;
14229                                 } else if (regindex == 3) {
14230                                         regtype = spec [MONO_INST_SRC3];
14231                                         if (regtype == ' ')
14232                                                 continue;
14233                                         vreg = ins->sreg3;
14234                                 }
14235
14236 #if SIZEOF_REGISTER == 4
14237                                 /* In the LLVM case, the long opcodes are not decomposed */
14238                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14239                                         /*
14240                                          * Since some instructions reference the original long vreg,
14241                                          * and some reference the two component vregs, it is quite hard
14242                                          * to determine when it needs to be global. So be conservative.
14243                                          */
14244                                         if (!get_vreg_to_inst (cfg, vreg)) {
14245                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14246
14247                                                 if (cfg->verbose_level > 2)
14248                                                         printf ("LONG VREG R%d made global.\n", vreg);
14249                                         }
14250
14251                                         /*
14252                                          * Make the component vregs volatile since the optimizations can
14253                                          * get confused otherwise.
14254                                          */
14255                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14256                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14257                                 }
14258 #endif
14259
14260                                 g_assert (vreg != -1);
14261
14262                                 prev_bb = vreg_to_bb [vreg];
14263                                 if (prev_bb == 0) {
14264                                         /* 0 is a valid block num */
14265                                         vreg_to_bb [vreg] = block_num + 1;
14266                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14267                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14268                                                 continue;
14269
14270                                         if (!get_vreg_to_inst (cfg, vreg)) {
14271                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14272                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14273
14274                                                 switch (regtype) {
14275                                                 case 'i':
14276                                                         if (vreg_is_ref (cfg, vreg))
14277                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14278                                                         else
14279                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14280                                                         break;
14281                                                 case 'l':
14282                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14283                                                         break;
14284                                                 case 'f':
14285                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14286                                                         break;
14287                                                 case 'v':
14288                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14289                                                         break;
14290                                                 default:
14291                                                         g_assert_not_reached ();
14292                                                 }
14293                                         }
14294
14295                                         /* Flag as having been used in more than one bb */
14296                                         vreg_to_bb [vreg] = -1;
14297                                 }
14298                         }
14299                 }
14300         }
14301
14302         /* If a variable is used in only one bblock, convert it into a local vreg */
14303         for (i = 0; i < cfg->num_varinfo; i++) {
14304                 MonoInst *var = cfg->varinfo [i];
14305                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14306
14307                 switch (var->type) {
14308                 case STACK_I4:
14309                 case STACK_OBJ:
14310                 case STACK_PTR:
14311                 case STACK_MP:
14312                 case STACK_VTYPE:
14313 #if SIZEOF_REGISTER == 8
14314                 case STACK_I8:
14315 #endif
14316 #if !defined(TARGET_X86)
14317                 /* Enabling this screws up the fp stack on x86 */
14318                 case STACK_R8:
14319 #endif
14320                         if (mono_arch_is_soft_float ())
14321                                 break;
14322
14323                         /*
14324                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14325                                 break;
14326                         */
14327
14328                         /* Arguments are implicitly global */
14329                         /* Putting R4 vars into registers doesn't work currently */
14330                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14331                         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) {
14332                                 /*
14333                                  * Make that the variable's liveness interval doesn't contain a call, since
14334                                  * that would cause the lvreg to be spilled, making the whole optimization
14335                                  * useless.
14336                                  */
14337                                 /* This is too slow for JIT compilation */
14338 #if 0
14339                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14340                                         MonoInst *ins;
14341                                         int def_index, call_index, ins_index;
14342                                         gboolean spilled = FALSE;
14343
14344                                         def_index = -1;
14345                                         call_index = -1;
14346                                         ins_index = 0;
14347                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14348                                                 const char *spec = INS_INFO (ins->opcode);
14349
14350                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14351                                                         def_index = ins_index;
14352
14353                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14354                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14355                                                         if (call_index > def_index) {
14356                                                                 spilled = TRUE;
14357                                                                 break;
14358                                                         }
14359                                                 }
14360
14361                                                 if (MONO_IS_CALL (ins))
14362                                                         call_index = ins_index;
14363
14364                                                 ins_index ++;
14365                                         }
14366
14367                                         if (spilled)
14368                                                 break;
14369                                 }
14370 #endif
14371
14372                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14373                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14374                                 var->flags |= MONO_INST_IS_DEAD;
14375                                 cfg->vreg_to_inst [var->dreg] = NULL;
14376                         }
14377                         break;
14378                 }
14379         }
14380
14381         /*
14382          * Compress the varinfo and vars tables so the liveness computation is faster and
14383          * takes up less space.
14384          */
14385         pos = 0;
14386         for (i = 0; i < cfg->num_varinfo; ++i) {
14387                 MonoInst *var = cfg->varinfo [i];
14388                 if (pos < i && cfg->locals_start == i)
14389                         cfg->locals_start = pos;
14390                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14391                         if (pos < i) {
14392                                 cfg->varinfo [pos] = cfg->varinfo [i];
14393                                 cfg->varinfo [pos]->inst_c0 = pos;
14394                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14395                                 cfg->vars [pos].idx = pos;
14396 #if SIZEOF_REGISTER == 4
14397                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14398                                         /* Modify the two component vars too */
14399                                         MonoInst *var1;
14400
14401                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14402                                         var1->inst_c0 = pos;
14403                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14404                                         var1->inst_c0 = pos;
14405                                 }
14406 #endif
14407                         }
14408                         pos ++;
14409                 }
14410         }
14411         cfg->num_varinfo = pos;
14412         if (cfg->locals_start > cfg->num_varinfo)
14413                 cfg->locals_start = cfg->num_varinfo;
14414 }
14415
14416 /*
14417  * mono_allocate_gsharedvt_vars:
14418  *
14419  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14420  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14421  */
14422 void
14423 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14424 {
14425         int i;
14426
14427         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14428
14429         for (i = 0; i < cfg->num_varinfo; ++i) {
14430                 MonoInst *ins = cfg->varinfo [i];
14431                 int idx;
14432
14433                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14434                         if (i >= cfg->locals_start) {
14435                                 /* Local */
14436                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14437                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14438                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14439                                 ins->inst_imm = idx;
14440                         } else {
14441                                 /* Arg */
14442                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14443                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14444                         }
14445                 }
14446         }
14447 }
14448
14449 /**
14450  * mono_spill_global_vars:
14451  *
14452  *   Generate spill code for variables which are not allocated to registers,
14453  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14454  * code is generated which could be optimized by the local optimization passes.
14455  */
14456 void
14457 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14458 {
14459         MonoBasicBlock *bb;
14460         char spec2 [16];
14461         int orig_next_vreg;
14462         guint32 *vreg_to_lvreg;
14463         guint32 *lvregs;
14464         guint32 i, lvregs_len;
14465         gboolean dest_has_lvreg = FALSE;
14466         MonoStackType stacktypes [128];
14467         MonoInst **live_range_start, **live_range_end;
14468         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14469
14470         *need_local_opts = FALSE;
14471
14472         memset (spec2, 0, sizeof (spec2));
14473
14474         /* FIXME: Move this function to mini.c */
14475         stacktypes ['i'] = STACK_PTR;
14476         stacktypes ['l'] = STACK_I8;
14477         stacktypes ['f'] = STACK_R8;
14478 #ifdef MONO_ARCH_SIMD_INTRINSICS
14479         stacktypes ['x'] = STACK_VTYPE;
14480 #endif
14481
14482 #if SIZEOF_REGISTER == 4
14483         /* Create MonoInsts for longs */
14484         for (i = 0; i < cfg->num_varinfo; i++) {
14485                 MonoInst *ins = cfg->varinfo [i];
14486
14487                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14488                         switch (ins->type) {
14489                         case STACK_R8:
14490                         case STACK_I8: {
14491                                 MonoInst *tree;
14492
14493                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14494                                         break;
14495
14496                                 g_assert (ins->opcode == OP_REGOFFSET);
14497
14498                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14499                                 g_assert (tree);
14500                                 tree->opcode = OP_REGOFFSET;
14501                                 tree->inst_basereg = ins->inst_basereg;
14502                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14503
14504                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14505                                 g_assert (tree);
14506                                 tree->opcode = OP_REGOFFSET;
14507                                 tree->inst_basereg = ins->inst_basereg;
14508                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14509                                 break;
14510                         }
14511                         default:
14512                                 break;
14513                         }
14514                 }
14515         }
14516 #endif
14517
14518         if (cfg->compute_gc_maps) {
14519                 /* registers need liveness info even for !non refs */
14520                 for (i = 0; i < cfg->num_varinfo; i++) {
14521                         MonoInst *ins = cfg->varinfo [i];
14522
14523                         if (ins->opcode == OP_REGVAR)
14524                                 ins->flags |= MONO_INST_GC_TRACK;
14525                 }
14526         }
14527
14528         /* FIXME: widening and truncation */
14529
14530         /*
14531          * As an optimization, when a variable allocated to the stack is first loaded into
14532          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14533          * the variable again.
14534          */
14535         orig_next_vreg = cfg->next_vreg;
14536         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14537         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14538         lvregs_len = 0;
14539
14540         /*
14541          * These arrays contain the first and last instructions accessing a given
14542          * variable.
14543          * Since we emit bblocks in the same order we process them here, and we
14544          * don't split live ranges, these will precisely describe the live range of
14545          * the variable, i.e. the instruction range where a valid value can be found
14546          * in the variables location.
14547          * The live range is computed using the liveness info computed by the liveness pass.
14548          * We can't use vmv->range, since that is an abstract live range, and we need
14549          * one which is instruction precise.
14550          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14551          */
14552         /* FIXME: Only do this if debugging info is requested */
14553         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14554         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14555         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14556         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14557
14558         /* Add spill loads/stores */
14559         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14560                 MonoInst *ins;
14561
14562                 if (cfg->verbose_level > 2)
14563                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14564
14565                 /* Clear vreg_to_lvreg array */
14566                 for (i = 0; i < lvregs_len; i++)
14567                         vreg_to_lvreg [lvregs [i]] = 0;
14568                 lvregs_len = 0;
14569
14570                 cfg->cbb = bb;
14571                 MONO_BB_FOR_EACH_INS (bb, ins) {
14572                         const char *spec = INS_INFO (ins->opcode);
14573                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14574                         gboolean store, no_lvreg;
14575                         int sregs [MONO_MAX_SRC_REGS];
14576
14577                         if (G_UNLIKELY (cfg->verbose_level > 2))
14578                                 mono_print_ins (ins);
14579
14580                         if (ins->opcode == OP_NOP)
14581                                 continue;
14582
14583                         /*
14584                          * We handle LDADDR here as well, since it can only be decomposed
14585                          * when variable addresses are known.
14586                          */
14587                         if (ins->opcode == OP_LDADDR) {
14588                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14589
14590                                 if (var->opcode == OP_VTARG_ADDR) {
14591                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14592                                         MonoInst *vtaddr = var->inst_left;
14593                                         if (vtaddr->opcode == OP_REGVAR) {
14594                                                 ins->opcode = OP_MOVE;
14595                                                 ins->sreg1 = vtaddr->dreg;
14596                                         }
14597                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14598                                                 ins->opcode = OP_LOAD_MEMBASE;
14599                                                 ins->inst_basereg = vtaddr->inst_basereg;
14600                                                 ins->inst_offset = vtaddr->inst_offset;
14601                                         } else
14602                                                 NOT_IMPLEMENTED;
14603                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14604                                         /* gsharedvt arg passed by ref */
14605                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14606
14607                                         ins->opcode = OP_LOAD_MEMBASE;
14608                                         ins->inst_basereg = var->inst_basereg;
14609                                         ins->inst_offset = var->inst_offset;
14610                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14611                                         MonoInst *load, *load2, *load3;
14612                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14613                                         int reg1, reg2, reg3;
14614                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14615                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14616
14617                                         /*
14618                                          * gsharedvt local.
14619                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14620                                          */
14621
14622                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14623
14624                                         g_assert (info_var);
14625                                         g_assert (locals_var);
14626
14627                                         /* Mark the instruction used to compute the locals var as used */
14628                                         cfg->gsharedvt_locals_var_ins = NULL;
14629
14630                                         /* Load the offset */
14631                                         if (info_var->opcode == OP_REGOFFSET) {
14632                                                 reg1 = alloc_ireg (cfg);
14633                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14634                                         } else if (info_var->opcode == OP_REGVAR) {
14635                                                 load = NULL;
14636                                                 reg1 = info_var->dreg;
14637                                         } else {
14638                                                 g_assert_not_reached ();
14639                                         }
14640                                         reg2 = alloc_ireg (cfg);
14641                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14642                                         /* Load the locals area address */
14643                                         reg3 = alloc_ireg (cfg);
14644                                         if (locals_var->opcode == OP_REGOFFSET) {
14645                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14646                                         } else if (locals_var->opcode == OP_REGVAR) {
14647                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14648                                         } else {
14649                                                 g_assert_not_reached ();
14650                                         }
14651                                         /* Compute the address */
14652                                         ins->opcode = OP_PADD;
14653                                         ins->sreg1 = reg3;
14654                                         ins->sreg2 = reg2;
14655
14656                                         mono_bblock_insert_before_ins (bb, ins, load3);
14657                                         mono_bblock_insert_before_ins (bb, load3, load2);
14658                                         if (load)
14659                                                 mono_bblock_insert_before_ins (bb, load2, load);
14660                                 } else {
14661                                         g_assert (var->opcode == OP_REGOFFSET);
14662
14663                                         ins->opcode = OP_ADD_IMM;
14664                                         ins->sreg1 = var->inst_basereg;
14665                                         ins->inst_imm = var->inst_offset;
14666                                 }
14667
14668                                 *need_local_opts = TRUE;
14669                                 spec = INS_INFO (ins->opcode);
14670                         }
14671
14672                         if (ins->opcode < MONO_CEE_LAST) {
14673                                 mono_print_ins (ins);
14674                                 g_assert_not_reached ();
14675                         }
14676
14677                         /*
14678                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14679                          * src register.
14680                          * FIXME:
14681                          */
14682                         if (MONO_IS_STORE_MEMBASE (ins)) {
14683                                 tmp_reg = ins->dreg;
14684                                 ins->dreg = ins->sreg2;
14685                                 ins->sreg2 = tmp_reg;
14686                                 store = TRUE;
14687
14688                                 spec2 [MONO_INST_DEST] = ' ';
14689                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14690                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14691                                 spec2 [MONO_INST_SRC3] = ' ';
14692                                 spec = spec2;
14693                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14694                                 g_assert_not_reached ();
14695                         else
14696                                 store = FALSE;
14697                         no_lvreg = FALSE;
14698
14699                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14700                                 printf ("\t %.3s %d", spec, ins->dreg);
14701                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14702                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14703                                         printf (" %d", sregs [srcindex]);
14704                                 printf ("\n");
14705                         }
14706
14707                         /***************/
14708                         /*    DREG     */
14709                         /***************/
14710                         regtype = spec [MONO_INST_DEST];
14711                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14712                         prev_dreg = -1;
14713
14714                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14715                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14716                                 MonoInst *store_ins;
14717                                 int store_opcode;
14718                                 MonoInst *def_ins = ins;
14719                                 int dreg = ins->dreg; /* The original vreg */
14720
14721                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14722
14723                                 if (var->opcode == OP_REGVAR) {
14724                                         ins->dreg = var->dreg;
14725                                 } 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)) {
14726                                         /*
14727                                          * Instead of emitting a load+store, use a _membase opcode.
14728                                          */
14729                                         g_assert (var->opcode == OP_REGOFFSET);
14730                                         if (ins->opcode == OP_MOVE) {
14731                                                 NULLIFY_INS (ins);
14732                                                 def_ins = NULL;
14733                                         } else {
14734                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14735                                                 ins->inst_basereg = var->inst_basereg;
14736                                                 ins->inst_offset = var->inst_offset;
14737                                                 ins->dreg = -1;
14738                                         }
14739                                         spec = INS_INFO (ins->opcode);
14740                                 } else {
14741                                         guint32 lvreg;
14742
14743                                         g_assert (var->opcode == OP_REGOFFSET);
14744
14745                                         prev_dreg = ins->dreg;
14746
14747                                         /* Invalidate any previous lvreg for this vreg */
14748                                         vreg_to_lvreg [ins->dreg] = 0;
14749
14750                                         lvreg = 0;
14751
14752                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14753                                                 regtype = 'l';
14754                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14755                                         }
14756
14757                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14758
14759 #if SIZEOF_REGISTER != 8
14760                                         if (regtype == 'l') {
14761                                                 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));
14762                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14763                                                 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));
14764                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14765                                                 def_ins = store_ins;
14766                                         }
14767                                         else
14768 #endif
14769                                         {
14770                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14771
14772                                                 /* Try to fuse the store into the instruction itself */
14773                                                 /* FIXME: Add more instructions */
14774                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14775                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14776                                                         ins->inst_imm = ins->inst_c0;
14777                                                         ins->inst_destbasereg = var->inst_basereg;
14778                                                         ins->inst_offset = var->inst_offset;
14779                                                         spec = INS_INFO (ins->opcode);
14780                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14781                                                         ins->opcode = store_opcode;
14782                                                         ins->inst_destbasereg = var->inst_basereg;
14783                                                         ins->inst_offset = var->inst_offset;
14784
14785                                                         no_lvreg = TRUE;
14786
14787                                                         tmp_reg = ins->dreg;
14788                                                         ins->dreg = ins->sreg2;
14789                                                         ins->sreg2 = tmp_reg;
14790                                                         store = TRUE;
14791
14792                                                         spec2 [MONO_INST_DEST] = ' ';
14793                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14794                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14795                                                         spec2 [MONO_INST_SRC3] = ' ';
14796                                                         spec = spec2;
14797                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14798                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14799                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14800                                                         ins->dreg = -1;
14801                                                         ins->inst_basereg = var->inst_basereg;
14802                                                         ins->inst_offset = var->inst_offset;
14803                                                         spec = INS_INFO (ins->opcode);
14804                                                 } else {
14805                                                         /* printf ("INS: "); mono_print_ins (ins); */
14806                                                         /* Create a store instruction */
14807                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14808
14809                                                         /* Insert it after the instruction */
14810                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14811
14812                                                         def_ins = store_ins;
14813
14814                                                         /*
14815                                                          * We can't assign ins->dreg to var->dreg here, since the
14816                                                          * sregs could use it. So set a flag, and do it after
14817                                                          * the sregs.
14818                                                          */
14819                                                         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)))
14820                                                                 dest_has_lvreg = TRUE;
14821                                                 }
14822                                         }
14823                                 }
14824
14825                                 if (def_ins && !live_range_start [dreg]) {
14826                                         live_range_start [dreg] = def_ins;
14827                                         live_range_start_bb [dreg] = bb;
14828                                 }
14829
14830                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14831                                         MonoInst *tmp;
14832
14833                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14834                                         tmp->inst_c1 = dreg;
14835                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14836                                 }
14837                         }
14838
14839                         /************/
14840                         /*  SREGS   */
14841                         /************/
14842                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14843                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14844                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14845                                 sreg = sregs [srcindex];
14846
14847                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14848                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14849                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14850                                         MonoInst *use_ins = ins;
14851                                         MonoInst *load_ins;
14852                                         guint32 load_opcode;
14853
14854                                         if (var->opcode == OP_REGVAR) {
14855                                                 sregs [srcindex] = var->dreg;
14856                                                 //mono_inst_set_src_registers (ins, sregs);
14857                                                 live_range_end [sreg] = use_ins;
14858                                                 live_range_end_bb [sreg] = bb;
14859
14860                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14861                                                         MonoInst *tmp;
14862
14863                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14864                                                         /* var->dreg is a hreg */
14865                                                         tmp->inst_c1 = sreg;
14866                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14867                                                 }
14868
14869                                                 continue;
14870                                         }
14871
14872                                         g_assert (var->opcode == OP_REGOFFSET);
14873
14874                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14875
14876                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14877
14878                                         if (vreg_to_lvreg [sreg]) {
14879                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14880
14881                                                 /* The variable is already loaded to an lvreg */
14882                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14883                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14884                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14885                                                 //mono_inst_set_src_registers (ins, sregs);
14886                                                 continue;
14887                                         }
14888
14889                                         /* Try to fuse the load into the instruction */
14890                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14891                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14892                                                 sregs [0] = var->inst_basereg;
14893                                                 //mono_inst_set_src_registers (ins, sregs);
14894                                                 ins->inst_offset = var->inst_offset;
14895                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14896                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14897                                                 sregs [1] = var->inst_basereg;
14898                                                 //mono_inst_set_src_registers (ins, sregs);
14899                                                 ins->inst_offset = var->inst_offset;
14900                                         } else {
14901                                                 if (MONO_IS_REAL_MOVE (ins)) {
14902                                                         ins->opcode = OP_NOP;
14903                                                         sreg = ins->dreg;
14904                                                 } else {
14905                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14906
14907                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14908
14909                                                         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) {
14910                                                                 if (var->dreg == prev_dreg) {
14911                                                                         /*
14912                                                                          * sreg refers to the value loaded by the load
14913                                                                          * emitted below, but we need to use ins->dreg
14914                                                                          * since it refers to the store emitted earlier.
14915                                                                          */
14916                                                                         sreg = ins->dreg;
14917                                                                 }
14918                                                                 g_assert (sreg != -1);
14919                                                                 vreg_to_lvreg [var->dreg] = sreg;
14920                                                                 g_assert (lvregs_len < 1024);
14921                                                                 lvregs [lvregs_len ++] = var->dreg;
14922                                                         }
14923                                                 }
14924
14925                                                 sregs [srcindex] = sreg;
14926                                                 //mono_inst_set_src_registers (ins, sregs);
14927
14928 #if SIZEOF_REGISTER != 8
14929                                                 if (regtype == 'l') {
14930                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14931                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14932                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14933                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14934                                                         use_ins = load_ins;
14935                                                 }
14936                                                 else
14937 #endif
14938                                                 {
14939 #if SIZEOF_REGISTER == 4
14940                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14941 #endif
14942                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14943                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14944                                                         use_ins = load_ins;
14945                                                 }
14946                                         }
14947
14948                                         if (var->dreg < orig_next_vreg) {
14949                                                 live_range_end [var->dreg] = use_ins;
14950                                                 live_range_end_bb [var->dreg] = bb;
14951                                         }
14952
14953                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14954                                                 MonoInst *tmp;
14955
14956                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14957                                                 tmp->inst_c1 = var->dreg;
14958                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14959                                         }
14960                                 }
14961                         }
14962                         mono_inst_set_src_registers (ins, sregs);
14963
14964                         if (dest_has_lvreg) {
14965                                 g_assert (ins->dreg != -1);
14966                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14967                                 g_assert (lvregs_len < 1024);
14968                                 lvregs [lvregs_len ++] = prev_dreg;
14969                                 dest_has_lvreg = FALSE;
14970                         }
14971
14972                         if (store) {
14973                                 tmp_reg = ins->dreg;
14974                                 ins->dreg = ins->sreg2;
14975                                 ins->sreg2 = tmp_reg;
14976                         }
14977
14978                         if (MONO_IS_CALL (ins)) {
14979                                 /* Clear vreg_to_lvreg array */
14980                                 for (i = 0; i < lvregs_len; i++)
14981                                         vreg_to_lvreg [lvregs [i]] = 0;
14982                                 lvregs_len = 0;
14983                         } else if (ins->opcode == OP_NOP) {
14984                                 ins->dreg = -1;
14985                                 MONO_INST_NULLIFY_SREGS (ins);
14986                         }
14987
14988                         if (cfg->verbose_level > 2)
14989                                 mono_print_ins_index (1, ins);
14990                 }
14991
14992                 /* Extend the live range based on the liveness info */
14993                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14994                         for (i = 0; i < cfg->num_varinfo; i ++) {
14995                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14996
14997                                 if (vreg_is_volatile (cfg, vi->vreg))
14998                                         /* The liveness info is incomplete */
14999                                         continue;
15000
15001                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
15002                                         /* Live from at least the first ins of this bb */
15003                                         live_range_start [vi->vreg] = bb->code;
15004                                         live_range_start_bb [vi->vreg] = bb;
15005                                 }
15006
15007                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
15008                                         /* Live at least until the last ins of this bb */
15009                                         live_range_end [vi->vreg] = bb->last_ins;
15010                                         live_range_end_bb [vi->vreg] = bb;
15011                                 }
15012                         }
15013                 }
15014         }
15015
15016         /*
15017          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
15018          * by storing the current native offset into MonoMethodVar->live_range_start/end.
15019          */
15020         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
15021                 for (i = 0; i < cfg->num_varinfo; ++i) {
15022                         int vreg = MONO_VARINFO (cfg, i)->vreg;
15023                         MonoInst *ins;
15024
15025                         if (live_range_start [vreg]) {
15026                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15027                                 ins->inst_c0 = i;
15028                                 ins->inst_c1 = vreg;
15029                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15030                         }
15031                         if (live_range_end [vreg]) {
15032                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15033                                 ins->inst_c0 = i;
15034                                 ins->inst_c1 = vreg;
15035                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15036                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15037                                 else
15038                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15039                         }
15040                 }
15041         }
15042
15043         if (cfg->gsharedvt_locals_var_ins) {
15044                 /* Nullify if unused */
15045                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15046                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15047         }
15048
15049         g_free (live_range_start);
15050         g_free (live_range_end);
15051         g_free (live_range_start_bb);
15052         g_free (live_range_end_bb);
15053 }
15054
15055 /**
15056  * FIXME:
15057  * - use 'iadd' instead of 'int_add'
15058  * - handling ovf opcodes: decompose in method_to_ir.
15059  * - unify iregs/fregs
15060  *   -> partly done, the missing parts are:
15061  *   - a more complete unification would involve unifying the hregs as well, so
15062  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15063  *     would no longer map to the machine hregs, so the code generators would need to
15064  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15065  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15066  *     fp/non-fp branches speeds it up by about 15%.
15067  * - use sext/zext opcodes instead of shifts
15068  * - add OP_ICALL
15069  * - get rid of TEMPLOADs if possible and use vregs instead
15070  * - clean up usage of OP_P/OP_ opcodes
15071  * - cleanup usage of DUMMY_USE
15072  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15073  *   stack
15074  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15075  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15076  * - make sure handle_stack_args () is called before the branch is emitted
15077  * - when the new IR is done, get rid of all unused stuff
15078  * - COMPARE/BEQ as separate instructions or unify them ?
15079  *   - keeping them separate allows specialized compare instructions like
15080  *     compare_imm, compare_membase
15081  *   - most back ends unify fp compare+branch, fp compare+ceq
15082  * - integrate mono_save_args into inline_method
15083  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15084  * - handle long shift opts on 32 bit platforms somehow: they require
15085  *   3 sregs (2 for arg1 and 1 for arg2)
15086  * - make byref a 'normal' type.
15087  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15088  *   variable if needed.
15089  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15090  *   like inline_method.
15091  * - remove inlining restrictions
15092  * - fix LNEG and enable cfold of INEG
15093  * - generalize x86 optimizations like ldelema as a peephole optimization
15094  * - add store_mem_imm for amd64
15095  * - optimize the loading of the interruption flag in the managed->native wrappers
15096  * - avoid special handling of OP_NOP in passes
15097  * - move code inserting instructions into one function/macro.
15098  * - try a coalescing phase after liveness analysis
15099  * - add float -> vreg conversion + local optimizations on !x86
15100  * - figure out how to handle decomposed branches during optimizations, ie.
15101  *   compare+branch, op_jump_table+op_br etc.
15102  * - promote RuntimeXHandles to vregs
15103  * - vtype cleanups:
15104  *   - add a NEW_VARLOADA_VREG macro
15105  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15106  *   accessing vtype fields.
15107  * - get rid of I8CONST on 64 bit platforms
15108  * - dealing with the increase in code size due to branches created during opcode
15109  *   decomposition:
15110  *   - use extended basic blocks
15111  *     - all parts of the JIT
15112  *     - handle_global_vregs () && local regalloc
15113  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15114  * - sources of increase in code size:
15115  *   - vtypes
15116  *   - long compares
15117  *   - isinst and castclass
15118  *   - lvregs not allocated to global registers even if used multiple times
15119  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15120  *   meaningful.
15121  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15122  * - add all micro optimizations from the old JIT
15123  * - put tree optimizations into the deadce pass
15124  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15125  *   specific function.
15126  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15127  *   fcompare + branchCC.
15128  * - create a helper function for allocating a stack slot, taking into account
15129  *   MONO_CFG_HAS_SPILLUP.
15130  * - merge r68207.
15131  * - merge the ia64 switch changes.
15132  * - optimize mono_regstate2_alloc_int/float.
15133  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15134  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15135  *   parts of the tree could be separated by other instructions, killing the tree
15136  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15137  *   instructions if the result of the load is used multiple times ?
15138  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15139  * - LAST MERGE: 108395.
15140  * - when returning vtypes in registers, generate IR and append it to the end of the
15141  *   last bb instead of doing it in the epilog.
15142  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15143  */
15144
15145 /*
15146
15147 NOTES
15148 -----
15149
15150 - When to decompose opcodes:
15151   - earlier: this makes some optimizations hard to implement, since the low level IR
15152   no longer contains the neccessary information. But it is easier to do.
15153   - later: harder to implement, enables more optimizations.
15154 - Branches inside bblocks:
15155   - created when decomposing complex opcodes.
15156     - branches to another bblock: harmless, but not tracked by the branch
15157       optimizations, so need to branch to a label at the start of the bblock.
15158     - branches to inside the same bblock: very problematic, trips up the local
15159       reg allocator. Can be fixed by spitting the current bblock, but that is a
15160       complex operation, since some local vregs can become global vregs etc.
15161 - Local/global vregs:
15162   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15163     local register allocator.
15164   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15165     structure, created by mono_create_var (). Assigned to hregs or the stack by
15166     the global register allocator.
15167 - When to do optimizations like alu->alu_imm:
15168   - earlier -> saves work later on since the IR will be smaller/simpler
15169   - later -> can work on more instructions
15170 - Handling of valuetypes:
15171   - When a vtype is pushed on the stack, a new temporary is created, an
15172     instruction computing its address (LDADDR) is emitted and pushed on
15173     the stack. Need to optimize cases when the vtype is used immediately as in
15174     argument passing, stloc etc.
15175 - Instead of the to_end stuff in the old JIT, simply call the function handling
15176   the values on the stack before emitting the last instruction of the bb.
15177 */
15178
15179 #endif /* DISABLE_JIT */