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  */
  12
  13 #include <config.h>
  14
  15 #ifndef DISABLE_JIT
  16
  17 #include <signal.h>
  18
  19 #ifdef HAVE_UNISTD_H
  20 #include <unistd.h>
  21 #endif
  22
  23 #include <math.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26
  27 #ifdef HAVE_SYS_TIME_H
  28 #include <sys/time.h>
  29 #endif
  30
  31 #ifdef HAVE_ALLOCA_H
  32 #include <alloca.h>
  33 #endif
  34
  35 #include <mono/utils/memcheck.h>
  36 #include "mini.h"
  37 #include <mono/metadata/abi-details.h>
  38 #include <mono/metadata/assembly.h>
  39 #include <mono/metadata/attrdefs.h>
  40 #include <mono/metadata/loader.h>
  41 #include <mono/metadata/tabledefs.h>
  42 #include <mono/metadata/class.h>
  43 #include <mono/metadata/object.h>
  44 #include <mono/metadata/exception.h>
  45 #include <mono/metadata/opcodes.h>
  46 #include <mono/metadata/mono-endian.h>
  47 #include <mono/metadata/tokentype.h>
  48 #include <mono/metadata/tabledefs.h>
  49 #include <mono/metadata/marshal.h>
  50 #include <mono/metadata/debug-helpers.h>
  51 #include <mono/metadata/mono-debug.h>
  52 #include <mono/metadata/mono-debug-debugger.h>
  53 #include <mono/metadata/gc-internals.h>
  54 #include <mono/metadata/security-manager.h>
  55 #include <mono/metadata/threads-types.h>
  56 #include <mono/metadata/security-core-clr.h>
  57 #include <mono/metadata/profiler-private.h>
  58 #include <mono/metadata/profiler.h>
  59 #include <mono/metadata/monitor.h>
  60 #include <mono/metadata/debug-mono-symfile.h>
  61 #include <mono/utils/mono-compiler.h>
  62 #include <mono/utils/mono-memory-model.h>
  63 #include <mono/utils/mono-error-internals.h>
  64 #include <mono/metadata/mono-basic-block.h>
  65 #include <mono/metadata/reflection-internals.h>
  66
  67 #include "trace.h"
  68
  69 #include "ir-emit.h"
  70
  71 #include "jit-icalls.h"
  72 #include "jit.h"
  73 #include "debugger-agent.h"
  74 #include "seq-points.h"
  75 #include "aot-compiler.h"
  76 #include "mini-llvm.h"
  77
  78 #define BRANCH_COST 10
  79 #define INLINE_LENGTH_LIMIT 20
  80
  81 /* These have 'cfg' as an implicit argument */
  82 #define INLINE_FAILURE(msg) do {                                                                        \
  83         if ((cfg->method != cfg->current_method) && (cfg->current_method->wrapper_type == MONO_WRAPPER_NONE)) { \
  84                 inline_failure (cfg, msg);                                                                              \
  85                 goto exception_exit;                                                                                    \
  86         } \
  87         } while (0)
  88 #define CHECK_CFG_EXCEPTION do {\
  89                 if (cfg->exception_type != MONO_EXCEPTION_NONE) \
  90                         goto exception_exit;                                            \
  91         } while (0)
  92 #define METHOD_ACCESS_FAILURE(method, cmethod) do {                     \
  93                 method_access_failure ((cfg), (method), (cmethod));                     \
  94                 goto exception_exit;                                                                            \
  95         } while (0)
  96 #define FIELD_ACCESS_FAILURE(method, field) do {                                        \
  97                 field_access_failure ((cfg), (method), (field));                        \
  98                 goto exception_exit;    \
  99         } while (0)
 100 #define GENERIC_SHARING_FAILURE(opcode) do {            \
 101                 if (cfg->gshared) {                                                                     \
 102                         gshared_failure (cfg, opcode, __FILE__, __LINE__);      \
 103                         goto exception_exit;    \
 104                 }                       \
 105         } while (0)
 106 #define GSHAREDVT_FAILURE(opcode) do {          \
 107         if (cfg->gsharedvt) {                                                                                           \
 108                 gsharedvt_failure (cfg, opcode, __FILE__, __LINE__);                    \
 109                 goto exception_exit;                                                                                    \
 110         }                                                                                                                                       \
 111         } while (0)
 112 #define OUT_OF_MEMORY_FAILURE do {      \
 113                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);                \
 114                 mono_error_set_out_of_memory (&cfg->error, "");                                 \
 115                 goto exception_exit;    \
 116         } while (0)
 117 #define DISABLE_AOT(cfg) do { \
 118                 if ((cfg)->verbose_level >= 2)                                            \
 119                         printf ("AOT disabled: %s:%d\n", __FILE__, __LINE__);   \
 120                 (cfg)->disable_aot = TRUE;                                                        \
 121         } while (0)
 122 #define LOAD_ERROR do { \
 123                 break_on_unverified ();                                                         \
 124                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD); \
 125                 goto exception_exit;                                                                    \
 126         } while (0)
 127
 128 #define TYPE_LOAD_ERROR(klass) do { \
 129                 cfg->exception_ptr = klass; \
 130                 LOAD_ERROR;                                     \
 131         } while (0)
 132
 133 #define CHECK_CFG_ERROR do {\
 134                 if (!mono_error_ok (&cfg->error)) { \
 135                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);        \
 136                         goto mono_error_exit; \
 137                 } \
 138         } while (0)
 139
 140 /* Determine whenever 'ins' represents a load of the 'this' argument */
 141 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
 142
 143 static int ldind_to_load_membase (int opcode);
 144 static int stind_to_store_membase (int opcode);
 145
 146 int mono_op_to_op_imm (int opcode);
 147 int mono_op_to_op_imm_noemul (int opcode);
 148
 149 MONO_API MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
 150
 151 static int inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
 152                                                   guchar *ip, guint real_offset, gboolean inline_always);
 153 static MonoInst*
 154 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp);
 155
 156 /* helper methods signatures */
 157 static MonoMethodSignature *helper_sig_domain_get;
 158 static MonoMethodSignature *helper_sig_rgctx_lazy_fetch_trampoline;
 159 static MonoMethodSignature *helper_sig_llvmonly_imt_thunk;
 160
 161
 162 /* type loading helpers */
 163 static GENERATE_GET_CLASS_WITH_CACHE (runtime_helpers, System.Runtime.CompilerServices, RuntimeHelpers)
 164 static GENERATE_TRY_GET_CLASS_WITH_CACHE (debuggable_attribute, System.Diagnostics, DebuggableAttribute)
 165
 166 /*
 167  * Instruction metadata
 168  */
 169 #ifdef MINI_OP
 170 #undef MINI_OP
 171 #endif
 172 #ifdef MINI_OP3
 173 #undef MINI_OP3
 174 #endif
 175 #define MINI_OP(a,b,dest,src1,src2) dest, src1, src2, ' ',
 176 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
 177 #define NONE ' '
 178 #define IREG 'i'
 179 #define FREG 'f'
 180 #define VREG 'v'
 181 #define XREG 'x'
 182 #if SIZEOF_REGISTER == 8 && SIZEOF_REGISTER == SIZEOF_VOID_P
 183 #define LREG IREG
 184 #else
 185 #define LREG 'l'
 186 #endif
 187 /* keep in sync with the enum in mini.h */
 188 const char
 189 ins_info[] = {
 190 #include "mini-ops.h"
 191 };
 192 #undef MINI_OP
 193 #undef MINI_OP3
 194
 195 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
 196 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
 197 /*
 198  * This should contain the index of the last sreg + 1. This is not the same
 199  * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
 200  */
 201 const gint8 ins_sreg_counts[] = {
 202 #include "mini-ops.h"
 203 };
 204 #undef MINI_OP
 205 #undef MINI_OP3
 206
 207 #define MONO_INIT_VARINFO(vi,id) do { \
 208         (vi)->range.first_use.pos.bid = 0xffff; \
 209         (vi)->reg = -1; \
 210         (vi)->idx = (id); \
 211 } while (0)
 212
 213 guint32
 214 mono_alloc_ireg (MonoCompile *cfg)
 215 {
 216         return alloc_ireg (cfg);
 217 }
 218
 219 guint32
 220 mono_alloc_lreg (MonoCompile *cfg)
 221 {
 222         return alloc_lreg (cfg);
 223 }
 224
 225 guint32
 226 mono_alloc_freg (MonoCompile *cfg)
 227 {
 228         return alloc_freg (cfg);
 229 }
 230
 231 guint32
 232 mono_alloc_preg (MonoCompile *cfg)
 233 {
 234         return alloc_preg (cfg);
 235 }
 236
 237 guint32
 238 mono_alloc_dreg (MonoCompile *cfg, MonoStackType stack_type)
 239 {
 240         return alloc_dreg (cfg, stack_type);
 241 }
 242
 243 /*
 244  * mono_alloc_ireg_ref:
 245  *
 246  *   Allocate an IREG, and mark it as holding a GC ref.
 247  */
 248 guint32
 249 mono_alloc_ireg_ref (MonoCompile *cfg)
 250 {
 251         return alloc_ireg_ref (cfg);
 252 }
 253
 254 /*
 255  * mono_alloc_ireg_mp:
 256  *
 257  *   Allocate an IREG, and mark it as holding a managed pointer.
 258  */
 259 guint32
 260 mono_alloc_ireg_mp (MonoCompile *cfg)
 261 {
 262         return alloc_ireg_mp (cfg);
 263 }
 264
 265 /*
 266  * mono_alloc_ireg_copy:
 267  *
 268  *   Allocate an IREG with the same GC type as VREG.
 269  */
 270 guint32
 271 mono_alloc_ireg_copy (MonoCompile *cfg, guint32 vreg)
 272 {
 273         if (vreg_is_ref (cfg, vreg))
 274                 return alloc_ireg_ref (cfg);
 275         else if (vreg_is_mp (cfg, vreg))
 276                 return alloc_ireg_mp (cfg);
 277         else
 278                 return alloc_ireg (cfg);
 279 }
 280
 281 guint
 282 mono_type_to_regmove (MonoCompile *cfg, MonoType *type)
 283 {
 284         if (type->byref)
 285                 return OP_MOVE;
 286
 287         type = mini_get_underlying_type (type);
 288 handle_enum:
 289         switch (type->type) {
 290         case MONO_TYPE_I1:
 291         case MONO_TYPE_U1:
 292                 return OP_MOVE;
 293         case MONO_TYPE_I2:
 294         case MONO_TYPE_U2:
 295                 return OP_MOVE;
 296         case MONO_TYPE_I4:
 297         case MONO_TYPE_U4:
 298                 return OP_MOVE;
 299         case MONO_TYPE_I:
 300         case MONO_TYPE_U:
 301         case MONO_TYPE_PTR:
 302         case MONO_TYPE_FNPTR:
 303                 return OP_MOVE;
 304         case MONO_TYPE_CLASS:
 305         case MONO_TYPE_STRING:
 306         case MONO_TYPE_OBJECT:
 307         case MONO_TYPE_SZARRAY:
 308         case MONO_TYPE_ARRAY:
 309                 return OP_MOVE;
 310         case MONO_TYPE_I8:
 311         case MONO_TYPE_U8:
 312 #if SIZEOF_REGISTER == 8
 313                 return OP_MOVE;
 314 #else
 315                 return OP_LMOVE;
 316 #endif
 317         case MONO_TYPE_R4:
 318                 return cfg->r4fp ? OP_RMOVE : OP_FMOVE;
 319         case MONO_TYPE_R8:
 320                 return OP_FMOVE;
 321         case MONO_TYPE_VALUETYPE:
 322                 if (type->data.klass->enumtype) {
 323                         type = mono_class_enum_basetype (type->data.klass);
 324                         goto handle_enum;
 325                 }
 326                 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
 327                         return OP_XMOVE;
 328                 return OP_VMOVE;
 329         case MONO_TYPE_TYPEDBYREF:
 330                 return OP_VMOVE;
 331         case MONO_TYPE_GENERICINST:
 332                 type = &type->data.generic_class->container_class->byval_arg;
 333                 goto handle_enum;
 334         case MONO_TYPE_VAR:
 335         case MONO_TYPE_MVAR:
 336                 g_assert (cfg->gshared);
 337                 if (mini_type_var_is_vt (type))
 338                         return OP_VMOVE;
 339                 else
 340                         return mono_type_to_regmove (cfg, mini_get_underlying_type (type));
 341         default:
 342                 g_error ("unknown type 0x%02x in type_to_regstore", type->type);
 343         }
 344         return -1;
 345 }
 346
 347 void
 348 mono_print_bb (MonoBasicBlock *bb, const char *msg)
 349 {
 350         int i;
 351         MonoInst *tree;
 352
 353         printf ("\n%s %d: [IN: ", msg, bb->block_num);
 354         for (i = 0; i < bb->in_count; ++i)
 355                 printf (" BB%d(%d)", bb->in_bb [i]->block_num, bb->in_bb [i]->dfn);
 356         printf (", OUT: ");
 357         for (i = 0; i < bb->out_count; ++i)
 358                 printf (" BB%d(%d)", bb->out_bb [i]->block_num, bb->out_bb [i]->dfn);
 359         printf (" ]\n");
 360         for (tree = bb->code; tree; tree = tree->next)
 361                 mono_print_ins_index (-1, tree);
 362 }
 363
 364 void
 365 mono_create_helper_signatures (void)
 366 {
 367         helper_sig_domain_get = mono_create_icall_signature ("ptr");
 368         helper_sig_rgctx_lazy_fetch_trampoline = mono_create_icall_signature ("ptr ptr");
 369         helper_sig_llvmonly_imt_thunk = mono_create_icall_signature ("ptr ptr ptr");
 370 }
 371
 372 static MONO_NEVER_INLINE void
 373 break_on_unverified (void)
 374 {
 375         if (mini_get_debug_options ()->break_on_unverified)
 376                 G_BREAKPOINT ();
 377 }
 378
 379 static MONO_NEVER_INLINE void
 380 method_access_failure (MonoCompile *cfg, MonoMethod *method, MonoMethod *cil_method)
 381 {
 382         char *method_fname = mono_method_full_name (method, TRUE);
 383         char *cil_method_fname = mono_method_full_name (cil_method, TRUE);
 384         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 385         mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname);
 386         g_free (method_fname);
 387         g_free (cil_method_fname);
 388 }
 389
 390 static MONO_NEVER_INLINE void
 391 field_access_failure (MonoCompile *cfg, MonoMethod *method, MonoClassField *field)
 392 {
 393         char *method_fname = mono_method_full_name (method, TRUE);
 394         char *field_fname = mono_field_full_name (field);
 395         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
 396         mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname);
 397         g_free (method_fname);
 398         g_free (field_fname);
 399 }
 400
 401 static MONO_NEVER_INLINE void
 402 inline_failure (MonoCompile *cfg, const char *msg)
 403 {
 404         if (cfg->verbose_level >= 2)
 405                 printf ("inline failed: %s\n", msg);
 406         mono_cfg_set_exception (cfg, MONO_EXCEPTION_INLINE_FAILED);
 407 }
 408
 409 static MONO_NEVER_INLINE void
 410 gshared_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 411 {
 412         if (cfg->verbose_level > 2)                                                                                     \
 413                 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);
 414         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 415 }
 416
 417 static MONO_NEVER_INLINE void
 418 gsharedvt_failure (MonoCompile *cfg, int opcode, const char *file, int line)
 419 {
 420         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);
 421         if (cfg->verbose_level >= 2)
 422                 printf ("%s\n", cfg->exception_message);
 423         mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED);
 424 }
 425
 426 /*
 427  * When using gsharedvt, some instatiations might be verifiable, and some might be not. i.e.
 428  * foo<T> (int i) { ldarg.0; box T; }
 429  */
 430 #define UNVERIFIED do { \
 431         if (cfg->gsharedvt) { \
 432                 if (cfg->verbose_level > 2)                                                                     \
 433                         printf ("gsharedvt method failed to verify, falling back to instantiation.\n"); \
 434                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
 435                 goto exception_exit;                                                                                    \
 436         }                                                                                                                                       \
 437         break_on_unverified ();                                                                                         \
 438         goto unverified;                                                                                                        \
 439 } while (0)
 440
 441 #define GET_BBLOCK(cfg,tblock,ip) do {  \
 442                 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
 443                 if (!(tblock)) {        \
 444                         if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
 445             NEW_BBLOCK (cfg, (tblock)); \
 446                         (tblock)->cil_code = (ip);      \
 447                         ADD_BBLOCK (cfg, (tblock));     \
 448                 } \
 449         } while (0)
 450
 451 #if defined(TARGET_X86) || defined(TARGET_AMD64)
 452 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
 453                 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
 454                 (dest)->dreg = alloc_ireg_mp ((cfg)); \
 455                 (dest)->sreg1 = (sr1); \
 456                 (dest)->sreg2 = (sr2); \
 457                 (dest)->inst_imm = (imm); \
 458                 (dest)->backend.shift_amount = (shift); \
 459                 MONO_ADD_INS ((cfg)->cbb, (dest)); \
 460         } while (0)
 461 #endif
 462
 463 /* Emit conversions so both operands of a binary opcode are of the same type */
 464 static void
 465 add_widen_op (MonoCompile *cfg, MonoInst *ins, MonoInst **arg1_ref, MonoInst **arg2_ref)
 466 {
 467         MonoInst *arg1 = *arg1_ref;
 468         MonoInst *arg2 = *arg2_ref;
 469
 470         if (cfg->r4fp &&
 471                 ((arg1->type == STACK_R4 && arg2->type == STACK_R8) ||
 472                  (arg1->type == STACK_R8 && arg2->type == STACK_R4))) {
 473                 MonoInst *conv;
 474
 475                 /* Mixing r4/r8 is allowed by the spec */
 476                 if (arg1->type == STACK_R4) {
 477                         int dreg = alloc_freg (cfg);
 478
 479                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg1->dreg);
 480                         conv->type = STACK_R8;
 481                         ins->sreg1 = dreg;
 482                         *arg1_ref = conv;
 483                 }
 484                 if (arg2->type == STACK_R4) {
 485                         int dreg = alloc_freg (cfg);
 486
 487                         EMIT_NEW_UNALU (cfg, conv, OP_RCONV_TO_R8, dreg, arg2->dreg);
 488                         conv->type = STACK_R8;
 489                         ins->sreg2 = dreg;
 490                         *arg2_ref = conv;
 491                 }
 492         }
 493
 494 #if SIZEOF_REGISTER == 8
 495         /* FIXME: Need to add many more cases */
 496         if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) {
 497                 MonoInst *widen;
 498
 499                 int dr = alloc_preg (cfg);
 500                 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg);
 501                 (ins)->sreg2 = widen->dreg;
 502         }
 503 #endif
 504 }
 505
 506 #define ADD_BINOP(op) do {      \
 507                 MONO_INST_NEW (cfg, ins, (op)); \
 508                 sp -= 2;        \
 509                 ins->sreg1 = sp [0]->dreg;      \
 510                 ins->sreg2 = sp [1]->dreg;      \
 511                 type_from_op (cfg, ins, sp [0], sp [1]);        \
 512                 CHECK_TYPE (ins);       \
 513                 /* Have to insert a widening op */               \
 514         add_widen_op (cfg, ins, &sp [0], &sp [1]);               \
 515         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 516         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 517         *sp++ = mono_decompose_opcode ((cfg), (ins));   \
 518         } while (0)
 519
 520 #define ADD_UNOP(op) do {       \
 521                 MONO_INST_NEW (cfg, ins, (op)); \
 522                 sp--;   \
 523                 ins->sreg1 = sp [0]->dreg;      \
 524                 type_from_op (cfg, ins, sp [0], NULL);  \
 525                 CHECK_TYPE (ins);       \
 526         (ins)->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type); \
 527         MONO_ADD_INS ((cfg)->cbb, (ins)); \
 528                 *sp++ = mono_decompose_opcode (cfg, ins);       \
 529         } while (0)
 530
 531 #define ADD_BINCOND(next_block) do {    \
 532                 MonoInst *cmp;  \
 533                 sp -= 2; \
 534                 MONO_INST_NEW(cfg, cmp, OP_COMPARE);    \
 535                 cmp->sreg1 = sp [0]->dreg;      \
 536                 cmp->sreg2 = sp [1]->dreg;      \
 537                 type_from_op (cfg, cmp, sp [0], sp [1]);        \
 538                 CHECK_TYPE (cmp);       \
 539                 add_widen_op (cfg, cmp, &sp [0], &sp [1]);                                              \
 540                 type_from_op (cfg, ins, sp [0], sp [1]);                                                        \
 541                 ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);   \
 542                 GET_BBLOCK (cfg, tblock, target);               \
 543                 link_bblock (cfg, cfg->cbb, tblock);    \
 544                 ins->inst_true_bb = tblock;     \
 545                 if ((next_block)) {     \
 546                         link_bblock (cfg, cfg->cbb, (next_block));      \
 547                         ins->inst_false_bb = (next_block);      \
 548                         start_new_bblock = 1;   \
 549                 } else {        \
 550                         GET_BBLOCK (cfg, tblock, ip);           \
 551                         link_bblock (cfg, cfg->cbb, tblock);    \
 552                         ins->inst_false_bb = tblock;    \
 553                         start_new_bblock = 2;   \
 554                 }       \
 555                 if (sp != stack_start) {                                                                        \
 556                     handle_stack_args (cfg, stack_start, sp - stack_start); \
 557                         CHECK_UNVERIFIABLE (cfg); \
 558                 } \
 559         MONO_ADD_INS (cfg->cbb, cmp); \
 560                 MONO_ADD_INS (cfg->cbb, ins);   \
 561         } while (0)
 562
 563 /* *
 564  * link_bblock: Links two basic blocks
 565  *
 566  * links two basic blocks in the control flow graph, the 'from'
 567  * argument is the starting block and the 'to' argument is the block
 568  * the control flow ends to after 'from'.
 569  */
 570 static void
 571 link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 572 {
 573         MonoBasicBlock **newa;
 574         int i, found;
 575
 576 #if 0
 577         if (from->cil_code) {
 578                 if (to->cil_code)
 579                         printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
 580                 else
 581                         printf ("edge from IL%04x to exit\n", from->cil_code - cfg->cil_code);
 582         } else {
 583                 if (to->cil_code)
 584                         printf ("edge from entry to IL_%04x\n", to->cil_code - cfg->cil_code);
 585                 else
 586                         printf ("edge from entry to exit\n");
 587         }
 588 #endif
 589
 590         found = FALSE;
 591         for (i = 0; i < from->out_count; ++i) {
 592                 if (to == from->out_bb [i]) {
 593                         found = TRUE;
 594                         break;
 595                 }
 596         }
 597         if (!found) {
 598                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (from->out_count + 1));
 599                 for (i = 0; i < from->out_count; ++i) {
 600                         newa [i] = from->out_bb [i];
 601                 }
 602                 newa [i] = to;
 603                 from->out_count++;
 604                 from->out_bb = newa;
 605         }
 606
 607         found = FALSE;
 608         for (i = 0; i < to->in_count; ++i) {
 609                 if (from == to->in_bb [i]) {
 610                         found = TRUE;
 611                         break;
 612                 }
 613         }
 614         if (!found) {
 615                 newa = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (gpointer) * (to->in_count + 1));
 616                 for (i = 0; i < to->in_count; ++i) {
 617                         newa [i] = to->in_bb [i];
 618                 }
 619                 newa [i] = from;
 620                 to->in_count++;
 621                 to->in_bb = newa;
 622         }
 623 }
 624
 625 void
 626 mono_link_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
 627 {
 628         link_bblock (cfg, from, to);
 629 }
 630
 631 /**
 632  * mono_find_block_region:
 633  *
 634  *   We mark each basic block with a region ID. We use that to avoid BB
 635  *   optimizations when blocks are in different regions.
 636  *
 637  * Returns:
 638  *   A region token that encodes where this region is, and information
 639  *   about the clause owner for this block.
 640  *
 641  *   The region encodes the try/catch/filter clause that owns this block
 642  *   as well as the type.  -1 is a special value that represents a block
 643  *   that is in none of try/catch/filter.
 644  */
 645 static int
 646 mono_find_block_region (MonoCompile *cfg, int offset)
 647 {
 648         MonoMethodHeader *header = cfg->header;
 649         MonoExceptionClause *clause;
 650         int i;
 651
 652         for (i = 0; i < header->num_clauses; ++i) {
 653                 clause = &header->clauses [i];
 654                 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
 655                     (offset < (clause->handler_offset)))
 656                         return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
 657
 658                 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
 659                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
 660                                 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
 661                         else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
 662                                 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
 663                         else
 664                                 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
 665                 }
 666         }
 667         for (i = 0; i < header->num_clauses; ++i) {
 668                 clause = &header->clauses [i];
 669
 670                 if (MONO_OFFSET_IN_CLAUSE (clause, offset))
 671                         return ((i + 1) << 8) | clause->flags;
 672         }
 673
 674         return -1;
 675 }
 676
 677 static GList*
 678 mono_find_final_block (MonoCompile *cfg, unsigned char *ip, unsigned char *target, int type)
 679 {
 680         MonoMethodHeader *header = cfg->header;
 681         MonoExceptionClause *clause;
 682         int i;
 683         GList *res = NULL;
 684
 685         for (i = 0; i < header->num_clauses; ++i) {
 686                 clause = &header->clauses [i];
 687                 if (MONO_OFFSET_IN_CLAUSE (clause, (ip - header->code)) &&
 688                     (!MONO_OFFSET_IN_CLAUSE (clause, (target - header->code)))) {
 689                         if (clause->flags == type)
 690                                 res = g_list_append (res, clause);
 691                 }
 692         }
 693         return res;
 694 }
 695
 696 static void
 697 mono_create_spvar_for_region (MonoCompile *cfg, int region)
 698 {
 699         MonoInst *var;
 700
 701         var = (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
 702         if (var)
 703                 return;
 704
 705         var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
 706         /* prevent it from being register allocated */
 707         var->flags |= MONO_INST_VOLATILE;
 708
 709         g_hash_table_insert (cfg->spvars, GINT_TO_POINTER (region), var);
 710 }
 711
 712 MonoInst *
 713 mono_find_exvar_for_offset (MonoCompile *cfg, int offset)
 714 {
 715         return (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 716 }
 717
 718 static MonoInst*
 719 mono_create_exvar_for_offset (MonoCompile *cfg, int offset)
 720 {
 721         MonoInst *var;
 722
 723         var = (MonoInst *)g_hash_table_lookup (cfg->exvars, GINT_TO_POINTER (offset));
 724         if (var)
 725                 return var;
 726
 727         var = mono_compile_create_var (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL);
 728         /* prevent it from being register allocated */
 729         var->flags |= MONO_INST_VOLATILE;
 730
 731         g_hash_table_insert (cfg->exvars, GINT_TO_POINTER (offset), var);
 732
 733         return var;
 734 }
 735
 736 /*
 737  * Returns the type used in the eval stack when @type is loaded.
 738  * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
 739  */
 740 void
 741 type_to_eval_stack_type (MonoCompile *cfg, MonoType *type, MonoInst *inst)
 742 {
 743         MonoClass *klass;
 744
 745         type = mini_get_underlying_type (type);
 746         inst->klass = klass = mono_class_from_mono_type (type);
 747         if (type->byref) {
 748                 inst->type = STACK_MP;
 749                 return;
 750         }
 751
 752 handle_enum:
 753         switch (type->type) {
 754         case MONO_TYPE_VOID:
 755                 inst->type = STACK_INV;
 756                 return;
 757         case MONO_TYPE_I1:
 758         case MONO_TYPE_U1:
 759         case MONO_TYPE_I2:
 760         case MONO_TYPE_U2:
 761         case MONO_TYPE_I4:
 762         case MONO_TYPE_U4:
 763                 inst->type = STACK_I4;
 764                 return;
 765         case MONO_TYPE_I:
 766         case MONO_TYPE_U:
 767         case MONO_TYPE_PTR:
 768         case MONO_TYPE_FNPTR:
 769                 inst->type = STACK_PTR;
 770                 return;
 771         case MONO_TYPE_CLASS:
 772         case MONO_TYPE_STRING:
 773         case MONO_TYPE_OBJECT:
 774         case MONO_TYPE_SZARRAY:
 775         case MONO_TYPE_ARRAY:
 776                 inst->type = STACK_OBJ;
 777                 return;
 778         case MONO_TYPE_I8:
 779         case MONO_TYPE_U8:
 780                 inst->type = STACK_I8;
 781                 return;
 782         case MONO_TYPE_R4:
 783                 inst->type = cfg->r4_stack_type;
 784                 break;
 785         case MONO_TYPE_R8:
 786                 inst->type = STACK_R8;
 787                 return;
 788         case MONO_TYPE_VALUETYPE:
 789                 if (type->data.klass->enumtype) {
 790                         type = mono_class_enum_basetype (type->data.klass);
 791                         goto handle_enum;
 792                 } else {
 793                         inst->klass = klass;
 794                         inst->type = STACK_VTYPE;
 795                         return;
 796                 }
 797         case MONO_TYPE_TYPEDBYREF:
 798                 inst->klass = mono_defaults.typed_reference_class;
 799                 inst->type = STACK_VTYPE;
 800                 return;
 801         case MONO_TYPE_GENERICINST:
 802                 type = &type->data.generic_class->container_class->byval_arg;
 803                 goto handle_enum;
 804         case MONO_TYPE_VAR:
 805         case MONO_TYPE_MVAR:
 806                 g_assert (cfg->gshared);
 807                 if (mini_is_gsharedvt_type (type)) {
 808                         g_assert (cfg->gsharedvt);
 809                         inst->type = STACK_VTYPE;
 810                 } else {
 811                         type_to_eval_stack_type (cfg, mini_get_underlying_type (type), inst);
 812                 }
 813                 return;
 814         default:
 815                 g_error ("unknown type 0x%02x in eval stack type", type->type);
 816         }
 817 }
 818
 819 /*
 820  * The following tables are used to quickly validate the IL code in type_from_op ().
 821  */
 822 static const char
 823 bin_num_table [STACK_MAX] [STACK_MAX] = {
 824         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 825         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 826         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 827         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_MP,  STACK_INV, STACK_INV},
 828         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8,  STACK_INV, STACK_INV, STACK_INV, STACK_R8},
 829         {STACK_INV, STACK_MP,  STACK_INV, STACK_MP,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV},
 830         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 831         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 832         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4}
 833 };
 834
 835 static const char
 836 neg_table [] = {
 837         STACK_INV, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_INV, STACK_INV, STACK_INV, STACK_R4
 838 };
 839
 840 /* reduce the size of this table */
 841 static const char
 842 bin_int_table [STACK_MAX] [STACK_MAX] = {
 843         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 844         {STACK_INV, STACK_I4,  STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 845         {STACK_INV, STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 846         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 847         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 848         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 849         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 850         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 851 };
 852
 853 static const char
 854 bin_comp_table [STACK_MAX] [STACK_MAX] = {
 855 /*      Inv i  L  p  F  &  O  vt r4 */
 856         {0},
 857         {0, 1, 0, 1, 0, 0, 0, 0}, /* i, int32 */
 858         {0, 0, 1, 0, 0, 0, 0, 0}, /* L, int64 */
 859         {0, 1, 0, 1, 0, 2, 4, 0}, /* p, ptr */
 860         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* F, R8 */
 861         {0, 0, 0, 2, 0, 1, 0, 0}, /* &, managed pointer */
 862         {0, 0, 0, 4, 0, 0, 3, 0}, /* O, reference */
 863         {0, 0, 0, 0, 0, 0, 0, 0}, /* vt value type */
 864         {0, 0, 0, 0, 1, 0, 0, 0, 1}, /* r, r4 */
 865 };
 866
 867 /* reduce the size of this table */
 868 static const char
 869 shift_table [STACK_MAX] [STACK_MAX] = {
 870         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 871         {STACK_INV, STACK_I4,  STACK_INV, STACK_I4,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 872         {STACK_INV, STACK_I8,  STACK_INV, STACK_I8,  STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 873         {STACK_INV, STACK_PTR, STACK_INV, STACK_PTR, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 874         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 875         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 876         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV},
 877         {STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV, STACK_INV}
 878 };
 879
 880 /*
 881  * Tables to map from the non-specific opcode to the matching
 882  * type-specific opcode.
 883  */
 884 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
 885 static const guint16
 886 binops_op_map [STACK_MAX] = {
 887         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
 888 };
 889
 890 /* handles from CEE_NEG to CEE_CONV_U8 */
 891 static const guint16
 892 unops_op_map [STACK_MAX] = {
 893         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
 894 };
 895
 896 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
 897 static const guint16
 898 ovfops_op_map [STACK_MAX] = {
 899         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
 900 };
 901
 902 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
 903 static const guint16
 904 ovf2ops_op_map [STACK_MAX] = {
 905         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
 906 };
 907
 908 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
 909 static const guint16
 910 ovf3ops_op_map [STACK_MAX] = {
 911         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
 912 };
 913
 914 /* handles from CEE_BEQ to CEE_BLT_UN */
 915 static const guint16
 916 beqops_op_map [STACK_MAX] = {
 917         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
 918 };
 919
 920 /* handles from CEE_CEQ to CEE_CLT_UN */
 921 static const guint16
 922 ceqops_op_map [STACK_MAX] = {
 923         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
 924 };
 925
 926 /*
 927  * Sets ins->type (the type on the eval stack) according to the
 928  * type of the opcode and the arguments to it.
 929  * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
 930  *
 931  * FIXME: this function sets ins->type unconditionally in some cases, but
 932  * it should set it to invalid for some types (a conv.x on an object)
 933  */
 934 static void
 935 type_from_op (MonoCompile *cfg, MonoInst *ins, MonoInst *src1, MonoInst *src2)
 936 {
 937         switch (ins->opcode) {
 938         /* binops */
 939         case CEE_ADD:
 940         case CEE_SUB:
 941         case CEE_MUL:
 942         case CEE_DIV:
 943         case CEE_REM:
 944                 /* FIXME: check unverifiable args for STACK_MP */
 945                 ins->type = bin_num_table [src1->type] [src2->type];
 946                 ins->opcode += binops_op_map [ins->type];
 947                 break;
 948         case CEE_DIV_UN:
 949         case CEE_REM_UN:
 950         case CEE_AND:
 951         case CEE_OR:
 952         case CEE_XOR:
 953                 ins->type = bin_int_table [src1->type] [src2->type];
 954                 ins->opcode += binops_op_map [ins->type];
 955                 break;
 956         case CEE_SHL:
 957         case CEE_SHR:
 958         case CEE_SHR_UN:
 959                 ins->type = shift_table [src1->type] [src2->type];
 960                 ins->opcode += binops_op_map [ins->type];
 961                 break;
 962         case OP_COMPARE:
 963         case OP_LCOMPARE:
 964         case OP_ICOMPARE:
 965                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 966                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 967                         ins->opcode = OP_LCOMPARE;
 968                 else if (src1->type == STACK_R4)
 969                         ins->opcode = OP_RCOMPARE;
 970                 else if (src1->type == STACK_R8)
 971                         ins->opcode = OP_FCOMPARE;
 972                 else
 973                         ins->opcode = OP_ICOMPARE;
 974                 break;
 975         case OP_ICOMPARE_IMM:
 976                 ins->type = bin_comp_table [src1->type] [src1->type] ? STACK_I4 : STACK_INV;
 977                 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
 978                         ins->opcode = OP_LCOMPARE_IMM;
 979                 break;
 980         case CEE_BEQ:
 981         case CEE_BGE:
 982         case CEE_BGT:
 983         case CEE_BLE:
 984         case CEE_BLT:
 985         case CEE_BNE_UN:
 986         case CEE_BGE_UN:
 987         case CEE_BGT_UN:
 988         case CEE_BLE_UN:
 989         case CEE_BLT_UN:
 990                 ins->opcode += beqops_op_map [src1->type];
 991                 break;
 992         case OP_CEQ:
 993                 ins->type = bin_comp_table [src1->type] [src2->type] ? STACK_I4: STACK_INV;
 994                 ins->opcode += ceqops_op_map [src1->type];
 995                 break;
 996         case OP_CGT:
 997         case OP_CGT_UN:
 998         case OP_CLT:
 999         case OP_CLT_UN:
1000                 ins->type = (bin_comp_table [src1->type] [src2->type] & 1) ? STACK_I4: STACK_INV;
1001                 ins->opcode += ceqops_op_map [src1->type];
1002                 break;
1003         /* unops */
1004         case CEE_NEG:
1005                 ins->type = neg_table [src1->type];
1006                 ins->opcode += unops_op_map [ins->type];
1007                 break;
1008         case CEE_NOT:
1009                 if (src1->type >= STACK_I4 && src1->type <= STACK_PTR)
1010                         ins->type = src1->type;
1011                 else
1012                         ins->type = STACK_INV;
1013                 ins->opcode += unops_op_map [ins->type];
1014                 break;
1015         case CEE_CONV_I1:
1016         case CEE_CONV_I2:
1017         case CEE_CONV_I4:
1018         case CEE_CONV_U4:
1019                 ins->type = STACK_I4;
1020                 ins->opcode += unops_op_map [src1->type];
1021                 break;
1022         case CEE_CONV_R_UN:
1023                 ins->type = STACK_R8;
1024                 switch (src1->type) {
1025                 case STACK_I4:
1026                 case STACK_PTR:
1027                         ins->opcode = OP_ICONV_TO_R_UN;
1028                         break;
1029                 case STACK_I8:
1030                         ins->opcode = OP_LCONV_TO_R_UN;
1031                         break;
1032                 }
1033                 break;
1034         case CEE_CONV_OVF_I1:
1035         case CEE_CONV_OVF_U1:
1036         case CEE_CONV_OVF_I2:
1037         case CEE_CONV_OVF_U2:
1038         case CEE_CONV_OVF_I4:
1039         case CEE_CONV_OVF_U4:
1040                 ins->type = STACK_I4;
1041                 ins->opcode += ovf3ops_op_map [src1->type];
1042                 break;
1043         case CEE_CONV_OVF_I_UN:
1044         case CEE_CONV_OVF_U_UN:
1045                 ins->type = STACK_PTR;
1046                 ins->opcode += ovf2ops_op_map [src1->type];
1047                 break;
1048         case CEE_CONV_OVF_I1_UN:
1049         case CEE_CONV_OVF_I2_UN:
1050         case CEE_CONV_OVF_I4_UN:
1051         case CEE_CONV_OVF_U1_UN:
1052         case CEE_CONV_OVF_U2_UN:
1053         case CEE_CONV_OVF_U4_UN:
1054                 ins->type = STACK_I4;
1055                 ins->opcode += ovf2ops_op_map [src1->type];
1056                 break;
1057         case CEE_CONV_U:
1058                 ins->type = STACK_PTR;
1059                 switch (src1->type) {
1060                 case STACK_I4:
1061                         ins->opcode = OP_ICONV_TO_U;
1062                         break;
1063                 case STACK_PTR:
1064                 case STACK_MP:
1065 #if SIZEOF_VOID_P == 8
1066                         ins->opcode = OP_LCONV_TO_U;
1067 #else
1068                         ins->opcode = OP_MOVE;
1069 #endif
1070                         break;
1071                 case STACK_I8:
1072                         ins->opcode = OP_LCONV_TO_U;
1073                         break;
1074                 case STACK_R8:
1075                         ins->opcode = OP_FCONV_TO_U;
1076                         break;
1077                 }
1078                 break;
1079         case CEE_CONV_I8:
1080         case CEE_CONV_U8:
1081                 ins->type = STACK_I8;
1082                 ins->opcode += unops_op_map [src1->type];
1083                 break;
1084         case CEE_CONV_OVF_I8:
1085         case CEE_CONV_OVF_U8:
1086                 ins->type = STACK_I8;
1087                 ins->opcode += ovf3ops_op_map [src1->type];
1088                 break;
1089         case CEE_CONV_OVF_U8_UN:
1090         case CEE_CONV_OVF_I8_UN:
1091                 ins->type = STACK_I8;
1092                 ins->opcode += ovf2ops_op_map [src1->type];
1093                 break;
1094         case CEE_CONV_R4:
1095                 ins->type = cfg->r4_stack_type;
1096                 ins->opcode += unops_op_map [src1->type];
1097                 break;
1098         case CEE_CONV_R8:
1099                 ins->type = STACK_R8;
1100                 ins->opcode += unops_op_map [src1->type];
1101                 break;
1102         case OP_CKFINITE:
1103                 ins->type = STACK_R8;
1104                 break;
1105         case CEE_CONV_U2:
1106         case CEE_CONV_U1:
1107                 ins->type = STACK_I4;
1108                 ins->opcode += ovfops_op_map [src1->type];
1109                 break;
1110         case CEE_CONV_I:
1111         case CEE_CONV_OVF_I:
1112         case CEE_CONV_OVF_U:
1113                 ins->type = STACK_PTR;
1114                 ins->opcode += ovfops_op_map [src1->type];
1115                 break;
1116         case CEE_ADD_OVF:
1117         case CEE_ADD_OVF_UN:
1118         case CEE_MUL_OVF:
1119         case CEE_MUL_OVF_UN:
1120         case CEE_SUB_OVF:
1121         case CEE_SUB_OVF_UN:
1122                 ins->type = bin_num_table [src1->type] [src2->type];
1123                 ins->opcode += ovfops_op_map [src1->type];
1124                 if (ins->type == STACK_R8)
1125                         ins->type = STACK_INV;
1126                 break;
1127         case OP_LOAD_MEMBASE:
1128                 ins->type = STACK_PTR;
1129                 break;
1130         case OP_LOADI1_MEMBASE:
1131         case OP_LOADU1_MEMBASE:
1132         case OP_LOADI2_MEMBASE:
1133         case OP_LOADU2_MEMBASE:
1134         case OP_LOADI4_MEMBASE:
1135         case OP_LOADU4_MEMBASE:
1136                 ins->type = STACK_PTR;
1137                 break;
1138         case OP_LOADI8_MEMBASE:
1139                 ins->type = STACK_I8;
1140                 break;
1141         case OP_LOADR4_MEMBASE:
1142                 ins->type = cfg->r4_stack_type;
1143                 break;
1144         case OP_LOADR8_MEMBASE:
1145                 ins->type = STACK_R8;
1146                 break;
1147         default:
1148                 g_error ("opcode 0x%04x not handled in type from op", ins->opcode);
1149                 break;
1150         }
1151
1152         if (ins->type == STACK_MP)
1153                 ins->klass = mono_defaults.object_class;
1154 }
1155
1156 static const char
1157 ldind_type [] = {
1158         STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1159 };
1160
1161 #if 0
1162
1163 static const char
1164 param_table [STACK_MAX] [STACK_MAX] = {
1165         {0},
1166 };
1167
1168 static int
1169 check_values_to_signature (MonoInst *args, MonoType *this_ins, MonoMethodSignature *sig)
1170 {
1171         int i;
1172
1173         if (sig->hasthis) {
1174                 switch (args->type) {
1175                 case STACK_I4:
1176                 case STACK_I8:
1177                 case STACK_R8:
1178                 case STACK_VTYPE:
1179                 case STACK_INV:
1180                         return 0;
1181                 }
1182                 args++;
1183         }
1184         for (i = 0; i < sig->param_count; ++i) {
1185                 switch (args [i].type) {
1186                 case STACK_INV:
1187                         return 0;
1188                 case STACK_MP:
1189                         if (!sig->params [i]->byref)
1190                                 return 0;
1191                         continue;
1192                 case STACK_OBJ:
1193                         if (sig->params [i]->byref)
1194                                 return 0;
1195                         switch (sig->params [i]->type) {
1196                         case MONO_TYPE_CLASS:
1197                         case MONO_TYPE_STRING:
1198                         case MONO_TYPE_OBJECT:
1199                         case MONO_TYPE_SZARRAY:
1200                         case MONO_TYPE_ARRAY:
1201                                 break;
1202                         default:
1203                                 return 0;
1204                         }
1205                         continue;
1206                 case STACK_R8:
1207                         if (sig->params [i]->byref)
1208                                 return 0;
1209                         if (sig->params [i]->type != MONO_TYPE_R4 && sig->params [i]->type != MONO_TYPE_R8)
1210                                 return 0;
1211                         continue;
1212                 case STACK_PTR:
1213                 case STACK_I4:
1214                 case STACK_I8:
1215                 case STACK_VTYPE:
1216                         break;
1217                 }
1218                 /*if (!param_table [args [i].type] [sig->params [i]->type])
1219                         return 0;*/
1220         }
1221         return 1;
1222 }
1223 #endif
1224
1225 /*
1226  * When we need a pointer to the current domain many times in a method, we
1227  * call mono_domain_get() once and we store the result in a local variable.
1228  * This function returns the variable that represents the MonoDomain*.
1229  */
1230 inline static MonoInst *
1231 mono_get_domainvar (MonoCompile *cfg)
1232 {
1233         if (!cfg->domainvar)
1234                 cfg->domainvar = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1235         return cfg->domainvar;
1236 }
1237
1238 /*
1239  * The got_var contains the address of the Global Offset Table when AOT
1240  * compiling.
1241  */
1242 MonoInst *
1243 mono_get_got_var (MonoCompile *cfg)
1244 {
1245         if (!cfg->compile_aot || !cfg->backend->need_got_var)
1246                 return NULL;
1247         if (!cfg->got_var) {
1248                 cfg->got_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1249         }
1250         return cfg->got_var;
1251 }
1252
1253 static MonoInst *
1254 mono_get_vtable_var (MonoCompile *cfg)
1255 {
1256         g_assert (cfg->gshared);
1257
1258         if (!cfg->rgctx_var) {
1259                 cfg->rgctx_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
1260                 /* force the var to be stack allocated */
1261                 cfg->rgctx_var->flags |= MONO_INST_VOLATILE;
1262         }
1263
1264         return cfg->rgctx_var;
1265 }
1266
1267 static MonoType*
1268 type_from_stack_type (MonoInst *ins) {
1269         switch (ins->type) {
1270         case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1271         case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1272         case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1273         case STACK_R4: return &mono_defaults.single_class->byval_arg;
1274         case STACK_R8: return &mono_defaults.double_class->byval_arg;
1275         case STACK_MP:
1276                 return &ins->klass->this_arg;
1277         case STACK_OBJ: return &mono_defaults.object_class->byval_arg;
1278         case STACK_VTYPE: return &ins->klass->byval_arg;
1279         default:
1280                 g_error ("stack type %d to monotype not handled\n", ins->type);
1281         }
1282         return NULL;
1283 }
1284
1285 static G_GNUC_UNUSED int
1286 type_to_stack_type (MonoCompile *cfg, MonoType *t)
1287 {
1288         t = mono_type_get_underlying_type (t);
1289         switch (t->type) {
1290         case MONO_TYPE_I1:
1291         case MONO_TYPE_U1:
1292         case MONO_TYPE_I2:
1293         case MONO_TYPE_U2:
1294         case MONO_TYPE_I4:
1295         case MONO_TYPE_U4:
1296                 return STACK_I4;
1297         case MONO_TYPE_I:
1298         case MONO_TYPE_U:
1299         case MONO_TYPE_PTR:
1300         case MONO_TYPE_FNPTR:
1301                 return STACK_PTR;
1302         case MONO_TYPE_CLASS:
1303         case MONO_TYPE_STRING:
1304         case MONO_TYPE_OBJECT:
1305         case MONO_TYPE_SZARRAY:
1306         case MONO_TYPE_ARRAY:
1307                 return STACK_OBJ;
1308         case MONO_TYPE_I8:
1309         case MONO_TYPE_U8:
1310                 return STACK_I8;
1311         case MONO_TYPE_R4:
1312                 return cfg->r4_stack_type;
1313         case MONO_TYPE_R8:
1314                 return STACK_R8;
1315         case MONO_TYPE_VALUETYPE:
1316         case MONO_TYPE_TYPEDBYREF:
1317                 return STACK_VTYPE;
1318         case MONO_TYPE_GENERICINST:
1319                 if (mono_type_generic_inst_is_valuetype (t))
1320                         return STACK_VTYPE;
1321                 else
1322                         return STACK_OBJ;
1323                 break;
1324         default:
1325                 g_assert_not_reached ();
1326         }
1327
1328         return -1;
1329 }
1330
1331 static MonoClass*
1332 array_access_to_klass (int opcode)
1333 {
1334         switch (opcode) {
1335         case CEE_LDELEM_U1:
1336                 return mono_defaults.byte_class;
1337         case CEE_LDELEM_U2:
1338                 return mono_defaults.uint16_class;
1339         case CEE_LDELEM_I:
1340         case CEE_STELEM_I:
1341                 return mono_defaults.int_class;
1342         case CEE_LDELEM_I1:
1343         case CEE_STELEM_I1:
1344                 return mono_defaults.sbyte_class;
1345         case CEE_LDELEM_I2:
1346         case CEE_STELEM_I2:
1347                 return mono_defaults.int16_class;
1348         case CEE_LDELEM_I4:
1349         case CEE_STELEM_I4:
1350                 return mono_defaults.int32_class;
1351         case CEE_LDELEM_U4:
1352                 return mono_defaults.uint32_class;
1353         case CEE_LDELEM_I8:
1354         case CEE_STELEM_I8:
1355                 return mono_defaults.int64_class;
1356         case CEE_LDELEM_R4:
1357         case CEE_STELEM_R4:
1358                 return mono_defaults.single_class;
1359         case CEE_LDELEM_R8:
1360         case CEE_STELEM_R8:
1361                 return mono_defaults.double_class;
1362         case CEE_LDELEM_REF:
1363         case CEE_STELEM_REF:
1364                 return mono_defaults.object_class;
1365         default:
1366                 g_assert_not_reached ();
1367         }
1368         return NULL;
1369 }
1370
1371 /*
1372  * We try to share variables when possible
1373  */
1374 static MonoInst *
1375 mono_compile_get_interface_var (MonoCompile *cfg, int slot, MonoInst *ins)
1376 {
1377         MonoInst *res;
1378         int pos, vnum;
1379
1380         /* inlining can result in deeper stacks */
1381         if (slot >= cfg->header->max_stack)
1382                 return mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1383
1384         pos = ins->type - 1 + slot * STACK_MAX;
1385
1386         switch (ins->type) {
1387         case STACK_I4:
1388         case STACK_I8:
1389         case STACK_R8:
1390         case STACK_PTR:
1391         case STACK_MP:
1392         case STACK_OBJ:
1393                 if ((vnum = cfg->intvars [pos]))
1394                         return cfg->varinfo [vnum];
1395                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1396                 cfg->intvars [pos] = res->inst_c0;
1397                 break;
1398         default:
1399                 res = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
1400         }
1401         return res;
1402 }
1403
1404 static void
1405 mono_save_token_info (MonoCompile *cfg, MonoImage *image, guint32 token, gpointer key)
1406 {
1407         /*
1408          * Don't use this if a generic_context is set, since that means AOT can't
1409          * look up the method using just the image+token.
1410          * table == 0 means this is a reference made from a wrapper.
1411          */
1412         if (cfg->compile_aot && !cfg->generic_context && (mono_metadata_token_table (token) > 0)) {
1413                 MonoJumpInfoToken *jump_info_token = (MonoJumpInfoToken *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1414                 jump_info_token->image = image;
1415                 jump_info_token->token = token;
1416                 g_hash_table_insert (cfg->token_info_hash, key, jump_info_token);
1417         }
1418 }
1419
1420 /*
1421  * This function is called to handle items that are left on the evaluation stack
1422  * at basic block boundaries. What happens is that we save the values to local variables
1423  * and we reload them later when first entering the target basic block (with the
1424  * handle_loaded_temps () function).
1425  * A single joint point will use the same variables (stored in the array bb->out_stack or
1426  * bb->in_stack, if the basic block is before or after the joint point).
1427  *
1428  * This function needs to be called _before_ emitting the last instruction of
1429  * the bb (i.e. before emitting a branch).
1430  * If the stack merge fails at a join point, cfg->unverifiable is set.
1431  */
1432 static void
1433 handle_stack_args (MonoCompile *cfg, MonoInst **sp, int count)
1434 {
1435         int i, bindex;
1436         MonoBasicBlock *bb = cfg->cbb;
1437         MonoBasicBlock *outb;
1438         MonoInst *inst, **locals;
1439         gboolean found;
1440
1441         if (!count)
1442                 return;
1443         if (cfg->verbose_level > 3)
1444                 printf ("%d item(s) on exit from B%d\n", count, bb->block_num);
1445         if (!bb->out_scount) {
1446                 bb->out_scount = count;
1447                 //printf ("bblock %d has out:", bb->block_num);
1448                 found = FALSE;
1449                 for (i = 0; i < bb->out_count; ++i) {
1450                         outb = bb->out_bb [i];
1451                         /* exception handlers are linked, but they should not be considered for stack args */
1452                         if (outb->flags & BB_EXCEPTION_HANDLER)
1453                                 continue;
1454                         //printf (" %d", outb->block_num);
1455                         if (outb->in_stack) {
1456                                 found = TRUE;
1457                                 bb->out_stack = outb->in_stack;
1458                                 break;
1459                         }
1460                 }
1461                 //printf ("\n");
1462                 if (!found) {
1463                         bb->out_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * count);
1464                         for (i = 0; i < count; ++i) {
1465                                 /*
1466                                  * try to reuse temps already allocated for this purpouse, if they occupy the same
1467                                  * stack slot and if they are of the same type.
1468                                  * This won't cause conflicts since if 'local' is used to
1469                                  * store one of the values in the in_stack of a bblock, then
1470                                  * the same variable will be used for the same outgoing stack
1471                                  * slot as well.
1472                                  * This doesn't work when inlining methods, since the bblocks
1473                                  * in the inlined methods do not inherit their in_stack from
1474                                  * the bblock they are inlined to. See bug #58863 for an
1475                                  * example.
1476                                  */
1477                                 if (cfg->inlined_method)
1478                                         bb->out_stack [i] = mono_compile_create_var (cfg, type_from_stack_type (sp [i]), OP_LOCAL);
1479                                 else
1480                                         bb->out_stack [i] = mono_compile_get_interface_var (cfg, i, sp [i]);
1481                         }
1482                 }
1483         }
1484
1485         for (i = 0; i < bb->out_count; ++i) {
1486                 outb = bb->out_bb [i];
1487                 /* exception handlers are linked, but they should not be considered for stack args */
1488                 if (outb->flags & BB_EXCEPTION_HANDLER)
1489                         continue;
1490                 if (outb->in_scount) {
1491                         if (outb->in_scount != bb->out_scount) {
1492                                 cfg->unverifiable = TRUE;
1493                                 return;
1494                         }
1495                         continue; /* check they are the same locals */
1496                 }
1497                 outb->in_scount = count;
1498                 outb->in_stack = bb->out_stack;
1499         }
1500
1501         locals = bb->out_stack;
1502         cfg->cbb = bb;
1503         for (i = 0; i < count; ++i) {
1504                 EMIT_NEW_TEMPSTORE (cfg, inst, locals [i]->inst_c0, sp [i]);
1505                 inst->cil_code = sp [i]->cil_code;
1506                 sp [i] = locals [i];
1507                 if (cfg->verbose_level > 3)
1508                         printf ("storing %d to temp %d\n", i, (int)locals [i]->inst_c0);
1509         }
1510
1511         /*
1512          * It is possible that the out bblocks already have in_stack assigned, and
1513          * the in_stacks differ. In this case, we will store to all the different
1514          * in_stacks.
1515          */
1516
1517         found = TRUE;
1518         bindex = 0;
1519         while (found) {
1520                 /* Find a bblock which has a different in_stack */
1521                 found = FALSE;
1522                 while (bindex < bb->out_count) {
1523                         outb = bb->out_bb [bindex];
1524                         /* exception handlers are linked, but they should not be considered for stack args */
1525                         if (outb->flags & BB_EXCEPTION_HANDLER) {
1526                                 bindex++;
1527                                 continue;
1528                         }
1529                         if (outb->in_stack != locals) {
1530                                 for (i = 0; i < count; ++i) {
1531                                         EMIT_NEW_TEMPSTORE (cfg, inst, outb->in_stack [i]->inst_c0, sp [i]);
1532                                         inst->cil_code = sp [i]->cil_code;
1533                                         sp [i] = locals [i];
1534                                         if (cfg->verbose_level > 3)
1535                                                 printf ("storing %d to temp %d\n", i, (int)outb->in_stack [i]->inst_c0);
1536                                 }
1537                                 locals = outb->in_stack;
1538                                 found = TRUE;
1539                                 break;
1540                         }
1541                         bindex ++;
1542                 }
1543         }
1544 }
1545
1546 static MonoInst*
1547 emit_runtime_constant (MonoCompile *cfg, MonoJumpInfoType patch_type, gpointer data)
1548 {
1549         MonoInst *ins;
1550
1551         if (cfg->compile_aot) {
1552                 EMIT_NEW_AOTCONST (cfg, ins, patch_type, data);
1553         } else {
1554                 MonoJumpInfo ji;
1555                 gpointer target;
1556                 MonoError error;
1557
1558                 ji.type = patch_type;
1559                 ji.data.target = data;
1560                 target = mono_resolve_patch_target (NULL, cfg->domain, NULL, &ji, FALSE, &error);
1561                 mono_error_assert_ok (&error);
1562
1563                 EMIT_NEW_PCONST (cfg, ins, target);
1564         }
1565         return ins;
1566 }
1567
1568 static void
1569 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1570 {
1571         int ibitmap_reg = alloc_preg (cfg);
1572 #ifdef COMPRESSED_INTERFACE_BITMAP
1573         MonoInst *args [2];
1574         MonoInst *res, *ins;
1575         NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, ibitmap_reg, base_reg, offset);
1576         MONO_ADD_INS (cfg->cbb, ins);
1577         args [0] = ins;
1578         args [1] = emit_runtime_constant (cfg, MONO_PATCH_INFO_IID, klass);
1579         res = mono_emit_jit_icall (cfg, mono_class_interface_match, args);
1580         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, intf_bit_reg, res->dreg);
1581 #else
1582         int ibitmap_byte_reg = alloc_preg (cfg);
1583
1584         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, base_reg, offset);
1585
1586         if (cfg->compile_aot) {
1587                 int iid_reg = alloc_preg (cfg);
1588                 int shifted_iid_reg = alloc_preg (cfg);
1589                 int ibitmap_byte_address_reg = alloc_preg (cfg);
1590                 int masked_iid_reg = alloc_preg (cfg);
1591                 int iid_one_bit_reg = alloc_preg (cfg);
1592                 int iid_bit_reg = alloc_preg (cfg);
1593                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1594                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHR_IMM, shifted_iid_reg, iid_reg, 3);
1595                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, ibitmap_byte_address_reg, ibitmap_reg, shifted_iid_reg);
1596                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1597                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, masked_iid_reg, iid_reg, 7);
1598                 MONO_EMIT_NEW_ICONST (cfg, iid_one_bit_reg, 1);
1599                 MONO_EMIT_NEW_BIALU (cfg, OP_ISHL, iid_bit_reg, iid_one_bit_reg, masked_iid_reg);
1600                 MONO_EMIT_NEW_BIALU (cfg, OP_IAND, intf_bit_reg, ibitmap_byte_reg, iid_bit_reg);
1601         } else {
1602                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1603                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1604         }
1605 #endif
1606 }
1607
1608 /*
1609  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1610  * stored in "klass_reg" implements the interface "klass".
1611  */
1612 static void
1613 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1614 {
1615         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1616 }
1617
1618 /*
1619  * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1620  * stored in "vtable_reg" implements the interface "klass".
1621  */
1622 static void
1623 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1624 {
1625         mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1626 }
1627
1628 /*
1629  * Emit code which checks whenever the interface id of @klass is smaller than
1630  * than the value given by max_iid_reg.
1631 */
1632 static void
1633 mini_emit_max_iid_check (MonoCompile *cfg, int max_iid_reg, MonoClass *klass,
1634                                                  MonoBasicBlock *false_target)
1635 {
1636         if (cfg->compile_aot) {
1637                 int iid_reg = alloc_preg (cfg);
1638                 MONO_EMIT_NEW_AOTCONST (cfg, iid_reg, klass, MONO_PATCH_INFO_IID);
1639                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, max_iid_reg, iid_reg);
1640         }
1641         else
1642                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, max_iid_reg, klass->interface_id);
1643         if (false_target)
1644                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1645         else
1646                 MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1647 }
1648
1649 /* Same as above, but obtains max_iid from a vtable */
1650 static void
1651 mini_emit_max_iid_check_vtable (MonoCompile *cfg, int vtable_reg, MonoClass *klass,
1652                                                                  MonoBasicBlock *false_target)
1653 {
1654         int max_iid_reg = alloc_preg (cfg);
1655
1656         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, max_interface_id));
1657         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1658 }
1659
1660 /* Same as above, but obtains max_iid from a klass */
1661 static void
1662 mini_emit_max_iid_check_class (MonoCompile *cfg, int klass_reg, MonoClass *klass,
1663                                                                  MonoBasicBlock *false_target)
1664 {
1665         int max_iid_reg = alloc_preg (cfg);
1666
1667         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, max_interface_id));
1668         mini_emit_max_iid_check (cfg, max_iid_reg, klass, false_target);
1669 }
1670
1671 static void
1672 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1673 {
1674         int idepth_reg = alloc_preg (cfg);
1675         int stypes_reg = alloc_preg (cfg);
1676         int stype = alloc_preg (cfg);
1677
1678         mono_class_setup_supertypes (klass);
1679
1680         if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1681                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1682                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1683                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBLT_UN, false_target);
1684         }
1685         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1686         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1687         if (klass_ins) {
1688                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, klass_ins->dreg);
1689         } else if (cfg->compile_aot) {
1690                 int const_reg = alloc_preg (cfg);
1691                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1692                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, stype, const_reg);
1693         } else {
1694                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, stype, klass);
1695         }
1696         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, true_target);
1697 }
1698
1699 static void
1700 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1701 {
1702         mini_emit_isninst_cast_inst (cfg, klass_reg, klass, NULL, false_target, true_target);
1703 }
1704
1705 static void
1706 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1707 {
1708         int intf_reg = alloc_preg (cfg);
1709
1710         mini_emit_max_iid_check_vtable (cfg, vtable_reg, klass, false_target);
1711         mini_emit_load_intf_bit_reg_vtable (cfg, intf_reg, vtable_reg, klass);
1712         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_reg, 0);
1713         if (true_target)
1714                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1715         else
1716                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1717 }
1718
1719 /*
1720  * Variant of the above that takes a register to the class, not the vtable.
1721  */
1722 static void
1723 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1724 {
1725         int intf_bit_reg = alloc_preg (cfg);
1726
1727         mini_emit_max_iid_check_class (cfg, klass_reg, klass, false_target);
1728         mini_emit_load_intf_bit_reg_class (cfg, intf_bit_reg, klass_reg, klass);
1729         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, intf_bit_reg, 0);
1730         if (true_target)
1731                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, true_target);
1732         else
1733                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
1734 }
1735
1736 static inline void
1737 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1738 {
1739         if (klass_inst) {
1740                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_inst->dreg);
1741         } else {
1742                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_CLASS, klass);
1743                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, ins->dreg);
1744         }
1745         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1746 }
1747
1748 static inline void
1749 mini_emit_class_check (MonoCompile *cfg, int klass_reg, MonoClass *klass)
1750 {
1751         mini_emit_class_check_inst (cfg, klass_reg, klass, NULL);
1752 }
1753
1754 static inline void
1755 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1756 {
1757         if (cfg->compile_aot) {
1758                 int const_reg = alloc_preg (cfg);
1759                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
1760                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, const_reg);
1761         } else {
1762                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
1763         }
1764         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, branch_op, target);
1765 }
1766
1767 static void
1768 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1769
1770 static void
1771 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1772 {
1773         if (klass->rank) {
1774                 int rank_reg = alloc_preg (cfg);
1775                 int eclass_reg = alloc_preg (cfg);
1776
1777                 g_assert (!klass_inst);
1778                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, rank));
1779                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
1780                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1781                 //              MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
1782                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
1783                 if (klass->cast_class == mono_defaults.object_class) {
1784                         int parent_reg = alloc_preg (cfg);
1785                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
1786                         mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1787                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1788                 } else if (klass->cast_class == mono_defaults.enum_class->parent) {
1789                         mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1790                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1791                 } else if (klass->cast_class == mono_defaults.enum_class) {
1792                         mini_emit_class_check (cfg, eclass_reg, mono_defaults.enum_class);
1793                 } else if (klass->cast_class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1794                         mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, NULL, NULL);
1795                 } else {
1796                         // Pass -1 as obj_reg to skip the check below for arrays of arrays
1797                         mini_emit_castclass (cfg, -1, eclass_reg, klass->cast_class, object_is_null);
1798                 }
1799
1800                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY) && (obj_reg != -1)) {
1801                         /* Check that the object is a vector too */
1802                         int bounds_reg = alloc_preg (cfg);
1803                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
1804                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
1805                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
1806                 }
1807         } else {
1808                 int idepth_reg = alloc_preg (cfg);
1809                 int stypes_reg = alloc_preg (cfg);
1810                 int stype = alloc_preg (cfg);
1811
1812                 mono_class_setup_supertypes (klass);
1813
1814                 if (klass->idepth > MONO_DEFAULT_SUPERTABLE_SIZE) {
1815                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, idepth));
1816                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, idepth_reg, klass->idepth);
1817                         MONO_EMIT_NEW_COND_EXC (cfg, LT_UN, "InvalidCastException");
1818                 }
1819                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, supertypes));
1820                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stype, stypes_reg, ((klass->idepth - 1) * SIZEOF_VOID_P));
1821                 mini_emit_class_check_inst (cfg, stype, klass, klass_inst);
1822         }
1823 }
1824
1825 static void
1826 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1827 {
1828         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, NULL, object_is_null);
1829 }
1830
1831 static void
1832 mini_emit_memset (MonoCompile *cfg, int destreg, int offset, int size, int val, int align)
1833 {
1834         int val_reg;
1835
1836         g_assert (val == 0);
1837
1838         if (align == 0)
1839                 align = 4;
1840
1841         if ((size <= SIZEOF_REGISTER) && (size <= align)) {
1842                 switch (size) {
1843                 case 1:
1844                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI1_MEMBASE_IMM, destreg, offset, val);
1845                         return;
1846                 case 2:
1847                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI2_MEMBASE_IMM, destreg, offset, val);
1848                         return;
1849                 case 4:
1850                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI4_MEMBASE_IMM, destreg, offset, val);
1851                         return;
1852 #if SIZEOF_REGISTER == 8
1853                 case 8:
1854                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREI8_MEMBASE_IMM, destreg, offset, val);
1855                         return;
1856 #endif
1857                 }
1858         }
1859
1860         val_reg = alloc_preg (cfg);
1861
1862         if (SIZEOF_REGISTER == 8)
1863                 MONO_EMIT_NEW_I8CONST (cfg, val_reg, val);
1864         else
1865                 MONO_EMIT_NEW_ICONST (cfg, val_reg, val);
1866
1867         if (align < 4) {
1868                 /* This could be optimized further if neccesary */
1869                 while (size >= 1) {
1870                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1871                         offset += 1;
1872                         size -= 1;
1873                 }
1874                 return;
1875         }
1876
1877         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1878                 if (offset % 8) {
1879                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1880                         offset += 4;
1881                         size -= 4;
1882                 }
1883                 while (size >= 8) {
1884                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, offset, val_reg);
1885                         offset += 8;
1886                         size -= 8;
1887                 }
1888         }
1889
1890         while (size >= 4) {
1891                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, offset, val_reg);
1892                 offset += 4;
1893                 size -= 4;
1894         }
1895         while (size >= 2) {
1896                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, offset, val_reg);
1897                 offset += 2;
1898                 size -= 2;
1899         }
1900         while (size >= 1) {
1901                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, offset, val_reg);
1902                 offset += 1;
1903                 size -= 1;
1904         }
1905 }
1906
1907 void
1908 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1909 {
1910         int cur_reg;
1911
1912         if (align == 0)
1913                 align = 4;
1914
1915         /*FIXME arbitrary hack to avoid unbound code expansion.*/
1916         g_assert (size < 10000);
1917
1918         if (align < 4) {
1919                 /* This could be optimized further if neccesary */
1920                 while (size >= 1) {
1921                         cur_reg = alloc_preg (cfg);
1922                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1923                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1924                         doffset += 1;
1925                         soffset += 1;
1926                         size -= 1;
1927                 }
1928         }
1929
1930         if (!cfg->backend->no_unaligned_access && SIZEOF_REGISTER == 8) {
1931                 while (size >= 8) {
1932                         cur_reg = alloc_preg (cfg);
1933                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI8_MEMBASE, cur_reg, srcreg, soffset);
1934                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, destreg, doffset, cur_reg);
1935                         doffset += 8;
1936                         soffset += 8;
1937                         size -= 8;
1938                 }
1939         }
1940
1941         while (size >= 4) {
1942                 cur_reg = alloc_preg (cfg);
1943                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, cur_reg, srcreg, soffset);
1944                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, destreg, doffset, cur_reg);
1945                 doffset += 4;
1946                 soffset += 4;
1947                 size -= 4;
1948         }
1949         while (size >= 2) {
1950                 cur_reg = alloc_preg (cfg);
1951                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI2_MEMBASE, cur_reg, srcreg, soffset);
1952                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, destreg, doffset, cur_reg);
1953                 doffset += 2;
1954                 soffset += 2;
1955                 size -= 2;
1956         }
1957         while (size >= 1) {
1958                 cur_reg = alloc_preg (cfg);
1959                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, cur_reg, srcreg, soffset);
1960                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, destreg, doffset, cur_reg);
1961                 doffset += 1;
1962                 soffset += 1;
1963                 size -= 1;
1964         }
1965 }
1966
1967 static void
1968 emit_tls_set (MonoCompile *cfg, int sreg1, MonoTlsKey tls_key)
1969 {
1970         MonoInst *ins, *c;
1971
1972         if (cfg->compile_aot) {
1973                 EMIT_NEW_TLS_OFFSETCONST (cfg, c, tls_key);
1974                 MONO_INST_NEW (cfg, ins, OP_TLS_SET_REG);
1975                 ins->sreg1 = sreg1;
1976                 ins->sreg2 = c->dreg;
1977                 MONO_ADD_INS (cfg->cbb, ins);
1978         } else {
1979                 MONO_INST_NEW (cfg, ins, OP_TLS_SET);
1980                 ins->sreg1 = sreg1;
1981                 ins->inst_offset = mini_get_tls_offset (tls_key);
1982                 MONO_ADD_INS (cfg->cbb, ins);
1983         }
1984 }
1985
1986 /*
1987  * emit_push_lmf:
1988  *
1989  *   Emit IR to push the current LMF onto the LMF stack.
1990  */
1991 static void
1992 emit_push_lmf (MonoCompile *cfg)
1993 {
1994         /*
1995          * Emit IR to push the LMF:
1996          * lmf_addr = <lmf_addr from tls>
1997          * lmf->lmf_addr = lmf_addr
1998          * lmf->prev_lmf = *lmf_addr
1999          * *lmf_addr = lmf
2000          */
2001         int lmf_reg, prev_lmf_reg;
2002         MonoInst *ins, *lmf_ins;
2003
2004         if (!cfg->lmf_ir)
2005                 return;
2006
2007         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2008                 /* Load current lmf */
2009                 lmf_ins = mono_get_lmf_intrinsic (cfg);
2010                 g_assert (lmf_ins);
2011                 MONO_ADD_INS (cfg->cbb, lmf_ins);
2012                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2013                 lmf_reg = ins->dreg;
2014                 /* Save previous_lmf */
2015                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), lmf_ins->dreg);
2016                 /* Set new LMF */
2017                 emit_tls_set (cfg, lmf_reg, TLS_KEY_LMF);
2018         } else {
2019                 /*
2020                  * Store lmf_addr in a variable, so it can be allocated to a global register.
2021                  */
2022                 if (!cfg->lmf_addr_var)
2023                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2024
2025 #ifdef HOST_WIN32
2026                 ins = mono_get_jit_tls_intrinsic (cfg);
2027                 if (ins) {
2028                         int jit_tls_dreg = ins->dreg;
2029
2030                         MONO_ADD_INS (cfg->cbb, ins);
2031                         lmf_reg = alloc_preg (cfg);
2032                         EMIT_NEW_BIALU_IMM (cfg, lmf_ins, OP_PADD_IMM, lmf_reg, jit_tls_dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2033                 } else {
2034                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2035                 }
2036 #else
2037                 lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
2038                 if (lmf_ins) {
2039                         MONO_ADD_INS (cfg->cbb, lmf_ins);
2040                 } else {
2041 #ifdef TARGET_IOS
2042                         MonoInst *args [16], *jit_tls_ins, *ins;
2043
2044                         /* Inline mono_get_lmf_addr () */
2045                         /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
2046
2047                         /* Load mono_jit_tls_id */
2048                         if (cfg->compile_aot)
2049                                 EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
2050                         else
2051                                 EMIT_NEW_ICONST (cfg, args [0], mono_jit_tls_id);
2052                         /* call pthread_getspecific () */
2053                         jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
2054                         /* lmf_addr = &jit_tls->lmf */
2055                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, MONO_STRUCT_OFFSET (MonoJitTlsData, lmf));
2056                         lmf_ins = ins;
2057 #else
2058                         lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
2059 #endif
2060                 }
2061 #endif
2062                 lmf_ins->dreg = cfg->lmf_addr_var->dreg;
2063
2064                 EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2065                 lmf_reg = ins->dreg;
2066
2067                 prev_lmf_reg = alloc_preg (cfg);
2068                 /* Save previous_lmf */
2069                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, cfg->lmf_addr_var->dreg, 0);
2070                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf), prev_lmf_reg);
2071                 /* Set new lmf */
2072                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, cfg->lmf_addr_var->dreg, 0, lmf_reg);
2073         }
2074 }
2075
2076 /*
2077  * emit_pop_lmf:
2078  *
2079  *   Emit IR to pop the current LMF from the LMF stack.
2080  */
2081 static void
2082 emit_pop_lmf (MonoCompile *cfg)
2083 {
2084         int lmf_reg, lmf_addr_reg, prev_lmf_reg;
2085         MonoInst *ins;
2086
2087         if (!cfg->lmf_ir)
2088                 return;
2089
2090         EMIT_NEW_VARLOADA (cfg, ins, cfg->lmf_var, NULL);
2091         lmf_reg = ins->dreg;
2092
2093         if (cfg->lmf_ir_mono_lmf && mini_tls_get_supported (cfg, TLS_KEY_LMF)) {
2094                 /* Load previous_lmf */
2095                 prev_lmf_reg = alloc_preg (cfg);
2096                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2097                 /* Set new LMF */
2098                 emit_tls_set (cfg, prev_lmf_reg, TLS_KEY_LMF);
2099         } else {
2100                 /*
2101                  * Emit IR to pop the LMF:
2102                  * *(lmf->lmf_addr) = lmf->prev_lmf
2103                  */
2104                 /* This could be called before emit_push_lmf () */
2105                 if (!cfg->lmf_addr_var)
2106                         cfg->lmf_addr_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2107                 lmf_addr_reg = cfg->lmf_addr_var->dreg;
2108
2109                 prev_lmf_reg = alloc_preg (cfg);
2110                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, prev_lmf_reg, lmf_reg, MONO_STRUCT_OFFSET (MonoLMF, previous_lmf));
2111                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, lmf_addr_reg, 0, prev_lmf_reg);
2112         }
2113 }
2114
2115 static void
2116 emit_instrumentation_call (MonoCompile *cfg, void *func)
2117 {
2118         MonoInst *iargs [1];
2119
2120         /*
2121          * Avoid instrumenting inlined methods since it can
2122          * distort profiling results.
2123          */
2124         if (cfg->method != cfg->current_method)
2125                 return;
2126
2127         if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE) {
2128                 EMIT_NEW_METHODCONST (cfg, iargs [0], cfg->method);
2129                 mono_emit_jit_icall (cfg, func, iargs);
2130         }
2131 }
2132
2133 static int
2134 ret_type_to_call_opcode (MonoCompile *cfg, MonoType *type, int calli, int virt)
2135 {
2136 handle_enum:
2137         type = mini_get_underlying_type (type);
2138         switch (type->type) {
2139         case MONO_TYPE_VOID:
2140                 return calli? OP_VOIDCALL_REG: virt? OP_VOIDCALL_MEMBASE: OP_VOIDCALL;
2141         case MONO_TYPE_I1:
2142         case MONO_TYPE_U1:
2143         case MONO_TYPE_I2:
2144         case MONO_TYPE_U2:
2145         case MONO_TYPE_I4:
2146         case MONO_TYPE_U4:
2147                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2148         case MONO_TYPE_I:
2149         case MONO_TYPE_U:
2150         case MONO_TYPE_PTR:
2151         case MONO_TYPE_FNPTR:
2152                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2153         case MONO_TYPE_CLASS:
2154         case MONO_TYPE_STRING:
2155         case MONO_TYPE_OBJECT:
2156         case MONO_TYPE_SZARRAY:
2157         case MONO_TYPE_ARRAY:
2158                 return calli? OP_CALL_REG: virt? OP_CALL_MEMBASE: OP_CALL;
2159         case MONO_TYPE_I8:
2160         case MONO_TYPE_U8:
2161                 return calli? OP_LCALL_REG: virt? OP_LCALL_MEMBASE: OP_LCALL;
2162         case MONO_TYPE_R4:
2163                 if (cfg->r4fp)
2164                         return calli? OP_RCALL_REG: virt? OP_RCALL_MEMBASE: OP_RCALL;
2165                 else
2166                         return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2167         case MONO_TYPE_R8:
2168                 return calli? OP_FCALL_REG: virt? OP_FCALL_MEMBASE: OP_FCALL;
2169         case MONO_TYPE_VALUETYPE:
2170                 if (type->data.klass->enumtype) {
2171                         type = mono_class_enum_basetype (type->data.klass);
2172                         goto handle_enum;
2173                 } else
2174                         return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2175         case MONO_TYPE_TYPEDBYREF:
2176                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2177         case MONO_TYPE_GENERICINST:
2178                 type = &type->data.generic_class->container_class->byval_arg;
2179                 goto handle_enum;
2180         case MONO_TYPE_VAR:
2181         case MONO_TYPE_MVAR:
2182                 /* gsharedvt */
2183                 return calli? OP_VCALL_REG: virt? OP_VCALL_MEMBASE: OP_VCALL;
2184         default:
2185                 g_error ("unknown type 0x%02x in ret_type_to_call_opcode", type->type);
2186         }
2187         return -1;
2188 }
2189
2190 //XXX this ignores if t is byref
2191 #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)))))
2192
2193 /*
2194  * target_type_is_incompatible:
2195  * @cfg: MonoCompile context
2196  *
2197  * Check that the item @arg on the evaluation stack can be stored
2198  * in the target type (can be a local, or field, etc).
2199  * The cfg arg can be used to check if we need verification or just
2200  * validity checks.
2201  *
2202  * Returns: non-0 value if arg can't be stored on a target.
2203  */
2204 static int
2205 target_type_is_incompatible (MonoCompile *cfg, MonoType *target, MonoInst *arg)
2206 {
2207         MonoType *simple_type;
2208         MonoClass *klass;
2209
2210         if (target->byref) {
2211                 /* FIXME: check that the pointed to types match */
2212                 if (arg->type == STACK_MP) {
2213                         MonoClass *base_class = mono_class_from_mono_type (target);
2214                         /* This is needed to handle gshared types + ldaddr */
2215                         simple_type = mini_get_underlying_type (&base_class->byval_arg);
2216
2217                         /* if the target is native int& or same type */
2218                         if (target->type == MONO_TYPE_I || arg->klass == mono_class_from_mono_type (simple_type))
2219                                 return 0;
2220
2221                         /* Both are primitive type byrefs and the source points to a larger type that the destination */
2222                         if (MONO_TYPE_IS_PRIMITIVE_SCALAR (target) && MONO_TYPE_IS_PRIMITIVE_SCALAR (&arg->klass->byval_arg) &&
2223                                 mono_class_instance_size (mono_class_from_mono_type (target)) <= mono_class_instance_size (arg->klass))
2224                                 return 0;
2225                         return 1;
2226                 }
2227                 if (arg->type == STACK_PTR)
2228                         return 0;
2229                 return 1;
2230         }
2231
2232         simple_type = mini_get_underlying_type (target);
2233         switch (simple_type->type) {
2234         case MONO_TYPE_VOID:
2235                 return 1;
2236         case MONO_TYPE_I1:
2237         case MONO_TYPE_U1:
2238         case MONO_TYPE_I2:
2239         case MONO_TYPE_U2:
2240         case MONO_TYPE_I4:
2241         case MONO_TYPE_U4:
2242                 if (arg->type != STACK_I4 && arg->type != STACK_PTR)
2243                         return 1;
2244                 return 0;
2245         case MONO_TYPE_PTR:
2246                 /* STACK_MP is needed when setting pinned locals */
2247                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2248                         return 1;
2249                 return 0;
2250         case MONO_TYPE_I:
2251         case MONO_TYPE_U:
2252         case MONO_TYPE_FNPTR:
2253                 /*
2254                  * Some opcodes like ldloca returns 'transient pointers' which can be stored in
2255                  * in native int. (#688008).
2256                  */
2257                 if (arg->type != STACK_I4 && arg->type != STACK_PTR && arg->type != STACK_MP)
2258                         return 1;
2259                 return 0;
2260         case MONO_TYPE_CLASS:
2261         case MONO_TYPE_STRING:
2262         case MONO_TYPE_OBJECT:
2263         case MONO_TYPE_SZARRAY:
2264         case MONO_TYPE_ARRAY:
2265                 if (arg->type != STACK_OBJ)
2266                         return 1;
2267                 /* FIXME: check type compatibility */
2268                 return 0;
2269         case MONO_TYPE_I8:
2270         case MONO_TYPE_U8:
2271                 if (arg->type != STACK_I8)
2272                         return 1;
2273                 return 0;
2274         case MONO_TYPE_R4:
2275                 if (arg->type != cfg->r4_stack_type)
2276                         return 1;
2277                 return 0;
2278         case MONO_TYPE_R8:
2279                 if (arg->type != STACK_R8)
2280                         return 1;
2281                 return 0;
2282         case MONO_TYPE_VALUETYPE:
2283                 if (arg->type != STACK_VTYPE)
2284                         return 1;
2285                 klass = mono_class_from_mono_type (simple_type);
2286                 if (klass != arg->klass)
2287                         return 1;
2288                 return 0;
2289         case MONO_TYPE_TYPEDBYREF:
2290                 if (arg->type != STACK_VTYPE)
2291                         return 1;
2292                 klass = mono_class_from_mono_type (simple_type);
2293                 if (klass != arg->klass)
2294                         return 1;
2295                 return 0;
2296         case MONO_TYPE_GENERICINST:
2297                 if (mono_type_generic_inst_is_valuetype (simple_type)) {
2298                         MonoClass *target_class;
2299                         if (arg->type != STACK_VTYPE)
2300                                 return 1;
2301                         klass = mono_class_from_mono_type (simple_type);
2302                         target_class = mono_class_from_mono_type (target);
2303                         /* The second cases is needed when doing partial sharing */
2304                         if (klass != arg->klass && target_class != arg->klass && target_class != mono_class_from_mono_type (mini_get_underlying_type (&arg->klass->byval_arg)))
2305                                 return 1;
2306                         return 0;
2307                 } else {
2308                         if (arg->type != STACK_OBJ)
2309                                 return 1;
2310                         /* FIXME: check type compatibility */
2311                         return 0;
2312                 }
2313         case MONO_TYPE_VAR:
2314         case MONO_TYPE_MVAR:
2315                 g_assert (cfg->gshared);
2316                 if (mini_type_var_is_vt (simple_type)) {
2317                         if (arg->type != STACK_VTYPE)
2318                                 return 1;
2319                 } else {
2320                         if (arg->type != STACK_OBJ)
2321                                 return 1;
2322                 }
2323                 return 0;
2324         default:
2325                 g_error ("unknown type 0x%02x in target_type_is_incompatible", simple_type->type);
2326         }
2327         return 1;
2328 }
2329
2330 /*
2331  * Prepare arguments for passing to a function call.
2332  * Return a non-zero value if the arguments can't be passed to the given
2333  * signature.
2334  * The type checks are not yet complete and some conversions may need
2335  * casts on 32 or 64 bit architectures.
2336  *
2337  * FIXME: implement this using target_type_is_incompatible ()
2338  */
2339 static int
2340 check_call_signature (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args)
2341 {
2342         MonoType *simple_type;
2343         int i;
2344
2345         if (sig->hasthis) {
2346                 if (args [0]->type != STACK_OBJ && args [0]->type != STACK_MP && args [0]->type != STACK_PTR)
2347                         return 1;
2348                 args++;
2349         }
2350         for (i = 0; i < sig->param_count; ++i) {
2351                 if (sig->params [i]->byref) {
2352                         if (args [i]->type != STACK_MP && args [i]->type != STACK_PTR)
2353                                 return 1;
2354                         continue;
2355                 }
2356                 simple_type = mini_get_underlying_type (sig->params [i]);
2357 handle_enum:
2358                 switch (simple_type->type) {
2359                 case MONO_TYPE_VOID:
2360                         return 1;
2361                         continue;
2362                 case MONO_TYPE_I1:
2363                 case MONO_TYPE_U1:
2364                 case MONO_TYPE_I2:
2365                 case MONO_TYPE_U2:
2366                 case MONO_TYPE_I4:
2367                 case MONO_TYPE_U4:
2368                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR)
2369                                 return 1;
2370                         continue;
2371                 case MONO_TYPE_I:
2372                 case MONO_TYPE_U:
2373                 case MONO_TYPE_PTR:
2374                 case MONO_TYPE_FNPTR:
2375                         if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2376                                 return 1;
2377                         continue;
2378                 case MONO_TYPE_CLASS:
2379                 case MONO_TYPE_STRING:
2380                 case MONO_TYPE_OBJECT:
2381                 case MONO_TYPE_SZARRAY:
2382                 case MONO_TYPE_ARRAY:
2383                         if (args [i]->type != STACK_OBJ)
2384                                 return 1;
2385                         continue;
2386                 case MONO_TYPE_I8:
2387                 case MONO_TYPE_U8:
2388                         if (args [i]->type != STACK_I8)
2389                                 return 1;
2390                         continue;
2391                 case MONO_TYPE_R4:
2392                         if (args [i]->type != cfg->r4_stack_type)
2393                                 return 1;
2394                         continue;
2395                 case MONO_TYPE_R8:
2396                         if (args [i]->type != STACK_R8)
2397                                 return 1;
2398                         continue;
2399                 case MONO_TYPE_VALUETYPE:
2400                         if (simple_type->data.klass->enumtype) {
2401                                 simple_type = mono_class_enum_basetype (simple_type->data.klass);
2402                                 goto handle_enum;
2403                         }
2404                         if (args [i]->type != STACK_VTYPE)
2405                                 return 1;
2406                         continue;
2407                 case MONO_TYPE_TYPEDBYREF:
2408                         if (args [i]->type != STACK_VTYPE)
2409                                 return 1;
2410                         continue;
2411                 case MONO_TYPE_GENERICINST:
2412                         simple_type = &simple_type->data.generic_class->container_class->byval_arg;
2413                         goto handle_enum;
2414                 case MONO_TYPE_VAR:
2415                 case MONO_TYPE_MVAR:
2416                         /* gsharedvt */
2417                         if (args [i]->type != STACK_VTYPE)
2418                                 return 1;
2419                         continue;
2420                 default:
2421                         g_error ("unknown type 0x%02x in check_call_signature",
2422                                  simple_type->type);
2423                 }
2424         }
2425         return 0;
2426 }
2427
2428 static int
2429 callvirt_to_call (int opcode)
2430 {
2431         switch (opcode) {
2432         case OP_CALL_MEMBASE:
2433                 return OP_CALL;
2434         case OP_VOIDCALL_MEMBASE:
2435                 return OP_VOIDCALL;
2436         case OP_FCALL_MEMBASE:
2437                 return OP_FCALL;
2438         case OP_RCALL_MEMBASE:
2439                 return OP_RCALL;
2440         case OP_VCALL_MEMBASE:
2441                 return OP_VCALL;
2442         case OP_LCALL_MEMBASE:
2443                 return OP_LCALL;
2444         default:
2445                 g_assert_not_reached ();
2446         }
2447
2448         return -1;
2449 }
2450
2451 static int
2452 callvirt_to_call_reg (int opcode)
2453 {
2454         switch (opcode) {
2455         case OP_CALL_MEMBASE:
2456                 return OP_CALL_REG;
2457         case OP_VOIDCALL_MEMBASE:
2458                 return OP_VOIDCALL_REG;
2459         case OP_FCALL_MEMBASE:
2460                 return OP_FCALL_REG;
2461         case OP_RCALL_MEMBASE:
2462                 return OP_RCALL_REG;
2463         case OP_VCALL_MEMBASE:
2464                 return OP_VCALL_REG;
2465         case OP_LCALL_MEMBASE:
2466                 return OP_LCALL_REG;
2467         default:
2468                 g_assert_not_reached ();
2469         }
2470
2471         return -1;
2472 }
2473
2474 /* Either METHOD or IMT_ARG needs to be set */
2475 static void
2476 emit_imt_argument (MonoCompile *cfg, MonoCallInst *call, MonoMethod *method, MonoInst *imt_arg)
2477 {
2478         int method_reg;
2479
2480         if (COMPILE_LLVM (cfg)) {
2481                 if (imt_arg) {
2482                         method_reg = alloc_preg (cfg);
2483                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2484                 } else {
2485                         MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2486                         method_reg = ins->dreg;
2487                 }
2488
2489 #ifdef ENABLE_LLVM
2490                 call->imt_arg_reg = method_reg;
2491 #endif
2492                 mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2493                 return;
2494         }
2495
2496         if (imt_arg) {
2497                 method_reg = alloc_preg (cfg);
2498                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, method_reg, imt_arg->dreg);
2499         } else {
2500                 MonoInst *ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHODCONST, method);
2501                 method_reg = ins->dreg;
2502         }
2503
2504         mono_call_inst_add_outarg_reg (cfg, call, method_reg, MONO_ARCH_IMT_REG, FALSE);
2505 }
2506
2507 static MonoJumpInfo *
2508 mono_patch_info_new (MonoMemPool *mp, int ip, MonoJumpInfoType type, gconstpointer target)
2509 {
2510         MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (mp, sizeof (MonoJumpInfo));
2511
2512         ji->ip.i = ip;
2513         ji->type = type;
2514         ji->data.target = target;
2515
2516         return ji;
2517 }
2518
2519 static int
2520 mini_class_check_context_used (MonoCompile *cfg, MonoClass *klass)
2521 {
2522         if (cfg->gshared)
2523                 return mono_class_check_context_used (klass);
2524         else
2525                 return 0;
2526 }
2527
2528 static int
2529 mini_method_check_context_used (MonoCompile *cfg, MonoMethod *method)
2530 {
2531         if (cfg->gshared)
2532                 return mono_method_check_context_used (method);
2533         else
2534                 return 0;
2535 }
2536
2537 /*
2538  * check_method_sharing:
2539  *
2540  *   Check whenever the vtable or an mrgctx needs to be passed when calling CMETHOD.
2541  */
2542 static void
2543 check_method_sharing (MonoCompile *cfg, MonoMethod *cmethod, gboolean *out_pass_vtable, gboolean *out_pass_mrgctx)
2544 {
2545         gboolean pass_vtable = FALSE;
2546         gboolean pass_mrgctx = FALSE;
2547
2548         if (((cmethod->flags & METHOD_ATTRIBUTE_STATIC) || cmethod->klass->valuetype) &&
2549                 (cmethod->klass->generic_class || cmethod->klass->generic_container)) {
2550                 gboolean sharable = FALSE;
2551
2552                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE))
2553                         sharable = TRUE;
2554
2555                 /*
2556                  * Pass vtable iff target method might
2557                  * be shared, which means that sharing
2558                  * is enabled for its class and its
2559                  * context is sharable (and it's not a
2560                  * generic method).
2561                  */
2562                 if (sharable && !(mini_method_get_context (cmethod) && mini_method_get_context (cmethod)->method_inst))
2563                         pass_vtable = TRUE;
2564         }
2565
2566         if (mini_method_get_context (cmethod) &&
2567                 mini_method_get_context (cmethod)->method_inst) {
2568                 g_assert (!pass_vtable);
2569
2570                 if (mono_method_is_generic_sharable_full (cmethod, TRUE, TRUE, TRUE)) {
2571                         pass_mrgctx = TRUE;
2572                 } else {
2573                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (mono_method_signature (cmethod)))
2574                                 pass_mrgctx = TRUE;
2575                 }
2576         }
2577
2578         if (out_pass_vtable)
2579                 *out_pass_vtable = pass_vtable;
2580         if (out_pass_mrgctx)
2581                 *out_pass_mrgctx = pass_mrgctx;
2582 }
2583
2584 inline static MonoCallInst *
2585 mono_emit_call_args (MonoCompile *cfg, MonoMethodSignature *sig,
2586                                          MonoInst **args, int calli, int virtual_, int tail, int rgctx, int unbox_trampoline)
2587 {
2588         MonoType *sig_ret;
2589         MonoCallInst *call;
2590 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2591         int i;
2592 #endif
2593
2594         if (cfg->llvm_only)
2595                 tail = FALSE;
2596
2597         if (tail) {
2598                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
2599
2600                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
2601         } else
2602                 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (cfg, sig->ret, calli, virtual_));
2603
2604         call->args = args;
2605         call->signature = sig;
2606         call->rgctx_reg = rgctx;
2607         sig_ret = mini_get_underlying_type (sig->ret);
2608
2609         type_to_eval_stack_type ((cfg), sig_ret, &call->inst);
2610
2611         if (tail) {
2612                 if (mini_type_is_vtype (sig_ret)) {
2613                         call->vret_var = cfg->vret_addr;
2614                         //g_assert_not_reached ();
2615                 }
2616         } else if (mini_type_is_vtype (sig_ret)) {
2617                 MonoInst *temp = mono_compile_create_var (cfg, sig_ret, OP_LOCAL);
2618                 MonoInst *loada;
2619
2620                 temp->backend.is_pinvoke = sig->pinvoke;
2621
2622                 /*
2623                  * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2624                  * address of return value to increase optimization opportunities.
2625                  * Before vtype decomposition, the dreg of the call ins itself represents the
2626                  * fact the call modifies the return value. After decomposition, the call will
2627                  * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2628                  * will be transformed into an LDADDR.
2629                  */
2630                 MONO_INST_NEW (cfg, loada, OP_OUTARG_VTRETADDR);
2631                 loada->dreg = alloc_preg (cfg);
2632                 loada->inst_p0 = temp;
2633                 /* We reference the call too since call->dreg could change during optimization */
2634                 loada->inst_p1 = call;
2635                 MONO_ADD_INS (cfg->cbb, loada);
2636
2637                 call->inst.dreg = temp->dreg;
2638
2639                 call->vret_var = loada;
2640         } else if (!MONO_TYPE_IS_VOID (sig_ret))
2641                 call->inst.dreg = alloc_dreg (cfg, (MonoStackType)call->inst.type);
2642
2643 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
2644         if (COMPILE_SOFT_FLOAT (cfg)) {
2645                 /*
2646                  * If the call has a float argument, we would need to do an r8->r4 conversion using
2647                  * an icall, but that cannot be done during the call sequence since it would clobber
2648                  * the call registers + the stack. So we do it before emitting the call.
2649                  */
2650                 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
2651                         MonoType *t;
2652                         MonoInst *in = call->args [i];
2653
2654                         if (i >= sig->hasthis)
2655                                 t = sig->params [i - sig->hasthis];
2656                         else
2657                                 t = &mono_defaults.int_class->byval_arg;
2658                         t = mono_type_get_underlying_type (t);
2659
2660                         if (!t->byref && t->type == MONO_TYPE_R4) {
2661                                 MonoInst *iargs [1];
2662                                 MonoInst *conv;
2663
2664                                 iargs [0] = in;
2665                                 conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
2666
2667                                 /* The result will be in an int vreg */
2668                                 call->args [i] = conv;
2669                         }
2670                 }
2671         }
2672 #endif
2673
2674         call->need_unbox_trampoline = unbox_trampoline;
2675
2676 #ifdef ENABLE_LLVM
2677         if (COMPILE_LLVM (cfg))
2678                 mono_llvm_emit_call (cfg, call);
2679         else
2680                 mono_arch_emit_call (cfg, call);
2681 #else
2682         mono_arch_emit_call (cfg, call);
2683 #endif
2684
2685         cfg->param_area = MAX (cfg->param_area, call->stack_usage);
2686         cfg->flags |= MONO_CFG_HAS_CALLS;
2687
2688         return call;
2689 }
2690
2691 static void
2692 set_rgctx_arg (MonoCompile *cfg, MonoCallInst *call, int rgctx_reg, MonoInst *rgctx_arg)
2693 {
2694         mono_call_inst_add_outarg_reg (cfg, call, rgctx_reg, MONO_ARCH_RGCTX_REG, FALSE);
2695         cfg->uses_rgctx_reg = TRUE;
2696         call->rgctx_reg = TRUE;
2697 #ifdef ENABLE_LLVM
2698         call->rgctx_arg_reg = rgctx_reg;
2699 #endif
2700 }
2701
2702 inline static MonoInst*
2703 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *imt_arg, MonoInst *rgctx_arg)
2704 {
2705         MonoCallInst *call;
2706         MonoInst *ins;
2707         int rgctx_reg = -1;
2708         gboolean check_sp = FALSE;
2709
2710         if (cfg->check_pinvoke_callconv && cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2711                 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2712
2713                 if (info && info->subtype == WRAPPER_SUBTYPE_PINVOKE)
2714                         check_sp = TRUE;
2715         }
2716
2717         if (rgctx_arg) {
2718                 rgctx_reg = mono_alloc_preg (cfg);
2719                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2720         }
2721
2722         if (check_sp) {
2723                 if (!cfg->stack_inbalance_var)
2724                         cfg->stack_inbalance_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2725
2726                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2727                 ins->dreg = cfg->stack_inbalance_var->dreg;
2728                 MONO_ADD_INS (cfg->cbb, ins);
2729         }
2730
2731         call = mono_emit_call_args (cfg, sig, args, TRUE, FALSE, FALSE, rgctx_arg ? TRUE : FALSE, FALSE);
2732
2733         call->inst.sreg1 = addr->dreg;
2734
2735         if (imt_arg)
2736                 emit_imt_argument (cfg, call, NULL, imt_arg);
2737
2738         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2739
2740         if (check_sp) {
2741                 int sp_reg;
2742
2743                 sp_reg = mono_alloc_preg (cfg);
2744
2745                 MONO_INST_NEW (cfg, ins, OP_GET_SP);
2746                 ins->dreg = sp_reg;
2747                 MONO_ADD_INS (cfg->cbb, ins);
2748
2749                 /* Restore the stack so we don't crash when throwing the exception */
2750                 MONO_INST_NEW (cfg, ins, OP_SET_SP);
2751                 ins->sreg1 = cfg->stack_inbalance_var->dreg;
2752                 MONO_ADD_INS (cfg->cbb, ins);
2753
2754                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, cfg->stack_inbalance_var->dreg, sp_reg);
2755                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "ExecutionEngineException");
2756         }
2757
2758         if (rgctx_arg)
2759                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2760
2761         return (MonoInst*)call;
2762 }
2763
2764 static MonoInst*
2765 emit_get_gsharedvt_info_klass (MonoCompile *cfg, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2766
2767 static MonoInst*
2768 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, MonoRgctxInfoType rgctx_type);
2769 static MonoInst*
2770 emit_get_rgctx_klass (MonoCompile *cfg, int context_used, MonoClass *klass, MonoRgctxInfoType rgctx_type);
2771
2772 static MonoInst*
2773 mono_emit_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig, gboolean tail,
2774                                                         MonoInst **args, MonoInst *this_ins, MonoInst *imt_arg, MonoInst *rgctx_arg)
2775 {
2776 #ifndef DISABLE_REMOTING
2777         gboolean might_be_remote = FALSE;
2778 #endif
2779         gboolean virtual_ = this_ins != NULL;
2780         gboolean enable_for_aot = TRUE;
2781         int context_used;
2782         MonoCallInst *call;
2783         MonoInst *call_target = NULL;
2784         int rgctx_reg = 0;
2785         gboolean need_unbox_trampoline;
2786
2787         if (!sig)
2788                 sig = mono_method_signature (method);
2789
2790         if (cfg->llvm_only && (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE))
2791                 g_assert_not_reached ();
2792
2793         if (rgctx_arg) {
2794                 rgctx_reg = mono_alloc_preg (cfg);
2795                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, rgctx_reg, rgctx_arg->dreg);
2796         }
2797
2798         if (method->string_ctor) {
2799                 /* Create the real signature */
2800                 /* FIXME: Cache these */
2801                 MonoMethodSignature *ctor_sig = mono_metadata_signature_dup_mempool (cfg->mempool, sig);
2802                 ctor_sig->ret = &mono_defaults.string_class->byval_arg;
2803
2804                 sig = ctor_sig;
2805         }
2806
2807         context_used = mini_method_check_context_used (cfg, method);
2808
2809 #ifndef DISABLE_REMOTING
2810         might_be_remote = this_ins && sig->hasthis &&
2811                 (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) &&
2812                 !(method->flags & METHOD_ATTRIBUTE_VIRTUAL) && (!MONO_CHECK_THIS (this_ins) || context_used);
2813
2814         if (might_be_remote && context_used) {
2815                 MonoInst *addr;
2816
2817                 g_assert (cfg->gshared);
2818
2819                 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2820
2821                 return mono_emit_calli (cfg, sig, args, addr, NULL, NULL);
2822         }
2823 #endif
2824
2825         if (cfg->llvm_only && !call_target && virtual_ && (method->flags & METHOD_ATTRIBUTE_VIRTUAL))
2826                 return emit_llvmonly_virtual_call (cfg, method, sig, 0, args);
2827
2828         need_unbox_trampoline = method->klass == mono_defaults.object_class || (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
2829
2830         call = mono_emit_call_args (cfg, sig, args, FALSE, virtual_, tail, rgctx_arg ? TRUE : FALSE, need_unbox_trampoline);
2831
2832 #ifndef DISABLE_REMOTING
2833         if (might_be_remote)
2834                 call->method = mono_marshal_get_remoting_invoke_with_check (method);
2835         else
2836 #endif
2837                 call->method = method;
2838         call->inst.flags |= MONO_INST_HAS_METHOD;
2839         call->inst.inst_left = this_ins;
2840         call->tail_call = tail;
2841
2842         if (virtual_) {
2843                 int vtable_reg, slot_reg, this_reg;
2844                 int offset;
2845
2846                 this_reg = this_ins->dreg;
2847
2848                 if (!cfg->llvm_only && (method->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (method->name, "Invoke")) {
2849                         MonoInst *dummy_use;
2850
2851                         MONO_EMIT_NULL_CHECK (cfg, this_reg);
2852
2853                         /* Make a call to delegate->invoke_impl */
2854                         call->inst.inst_basereg = this_reg;
2855                         call->inst.inst_offset = MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl);
2856                         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2857
2858                         /* We must emit a dummy use here because the delegate trampoline will
2859                         replace the 'this' argument with the delegate target making this activation
2860                         no longer a root for the delegate.
2861                         This is an issue for delegates that target collectible code such as dynamic
2862                         methods of GC'able assemblies.
2863
2864                         For a test case look into #667921.
2865
2866                         FIXME: a dummy use is not the best way to do it as the local register allocator
2867                         will put it on a caller save register and spil it around the call.
2868                         Ideally, we would either put it on a callee save register or only do the store part.
2869                          */
2870                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, args [0]);
2871
2872                         return (MonoInst*)call;
2873                 }
2874
2875                 if ((!cfg->compile_aot || enable_for_aot) &&
2876                         (!(method->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
2877                          (MONO_METHOD_IS_FINAL (method) &&
2878                           method->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)) &&
2879                         !(mono_class_is_marshalbyref (method->klass) && context_used)) {
2880                         /*
2881                          * the method is not virtual, we just need to ensure this is not null
2882                          * and then we can call the method directly.
2883                          */
2884 #ifndef DISABLE_REMOTING
2885                         if (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class) {
2886                                 /*
2887                                  * The check above ensures method is not gshared, this is needed since
2888                                  * gshared methods can't have wrappers.
2889                                  */
2890                                 method = call->method = mono_marshal_get_remoting_invoke_with_check (method);
2891                         }
2892 #endif
2893
2894                         if (!method->string_ctor)
2895                                 MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2896
2897                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2898                 } else if ((method->flags & METHOD_ATTRIBUTE_VIRTUAL) && MONO_METHOD_IS_FINAL (method)) {
2899                         /*
2900                          * the method is virtual, but we can statically dispatch since either
2901                          * it's class or the method itself are sealed.
2902                          * But first we need to ensure it's not a null reference.
2903                          */
2904                         MONO_EMIT_NEW_CHECK_THIS (cfg, this_reg);
2905
2906                         call->inst.opcode = callvirt_to_call (call->inst.opcode);
2907                 } else if (call_target) {
2908                         vtable_reg = alloc_preg (cfg);
2909                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2910
2911                         call->inst.opcode = callvirt_to_call_reg (call->inst.opcode);
2912                         call->inst.sreg1 = call_target->dreg;
2913                         call->inst.flags &= !MONO_INST_HAS_METHOD;
2914                 } else {
2915                         vtable_reg = alloc_preg (cfg);
2916                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
2917                         if (method->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2918                                 guint32 imt_slot = mono_method_get_imt_slot (method);
2919                                 emit_imt_argument (cfg, call, call->method, imt_arg);
2920                                 slot_reg = vtable_reg;
2921                                 offset = ((gint32)imt_slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
2922                         } else {
2923                                 slot_reg = vtable_reg;
2924                                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) +
2925                                         ((mono_method_get_vtable_index (method)) * (SIZEOF_VOID_P));
2926                                 if (imt_arg) {
2927                                         g_assert (mono_method_signature (method)->generic_param_count);
2928                                         emit_imt_argument (cfg, call, call->method, imt_arg);
2929                                 }
2930                         }
2931
2932                         call->inst.sreg1 = slot_reg;
2933                         call->inst.inst_offset = offset;
2934                         call->is_virtual = TRUE;
2935                 }
2936         }
2937
2938         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2939
2940         if (rgctx_arg)
2941                 set_rgctx_arg (cfg, call, rgctx_reg, rgctx_arg);
2942
2943         return (MonoInst*)call;
2944 }
2945
2946 MonoInst*
2947 mono_emit_method_call (MonoCompile *cfg, MonoMethod *method, MonoInst **args, MonoInst *this_ins)
2948 {
2949         return mono_emit_method_call_full (cfg, method, mono_method_signature (method), FALSE, args, this_ins, NULL, NULL);
2950 }
2951
2952 MonoInst*
2953 mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig,
2954                                            MonoInst **args)
2955 {
2956         MonoCallInst *call;
2957
2958         g_assert (sig);
2959
2960         call = mono_emit_call_args (cfg, sig, args, FALSE, FALSE, FALSE, FALSE, FALSE);
2961         call->fptr = func;
2962
2963         MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
2964
2965         return (MonoInst*)call;
2966 }
2967
2968 MonoInst*
2969 mono_emit_jit_icall (MonoCompile *cfg, gconstpointer func, MonoInst **args)
2970 {
2971         MonoJitICallInfo *info = mono_find_jit_icall_by_addr (func);
2972
2973         g_assert (info);
2974
2975         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
2976 }
2977
2978 /*
2979  * mono_emit_abs_call:
2980  *
2981  *   Emit a call to the runtime function described by PATCH_TYPE and DATA.
2982  */
2983 inline static MonoInst*
2984 mono_emit_abs_call (MonoCompile *cfg, MonoJumpInfoType patch_type, gconstpointer data,
2985                                         MonoMethodSignature *sig, MonoInst **args)
2986 {
2987         MonoJumpInfo *ji = mono_patch_info_new (cfg->mempool, 0, patch_type, data);
2988         MonoInst *ins;
2989
2990         /*
2991          * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2992          * handle it.
2993          */
2994         if (cfg->abs_patches == NULL)
2995                 cfg->abs_patches = g_hash_table_new (NULL, NULL);
2996         g_hash_table_insert (cfg->abs_patches, ji, ji);
2997         ins = mono_emit_native_call (cfg, ji, sig, args);
2998         ((MonoCallInst*)ins)->fptr_is_patch = TRUE;
2999         return ins;
3000 }
3001
3002 static MonoMethodSignature*
3003 sig_to_rgctx_sig (MonoMethodSignature *sig)
3004 {
3005         // FIXME: memory allocation
3006         MonoMethodSignature *res;
3007         int i;
3008
3009         res = (MonoMethodSignature *)g_malloc (MONO_SIZEOF_METHOD_SIGNATURE + (sig->param_count + 1) * sizeof (MonoType*));
3010         memcpy (res, sig, MONO_SIZEOF_METHOD_SIGNATURE);
3011         res->param_count = sig->param_count + 1;
3012         for (i = 0; i < sig->param_count; ++i)
3013                 res->params [i] = sig->params [i];
3014         res->params [sig->param_count] = &mono_defaults.int_class->this_arg;
3015         return res;
3016 }
3017
3018 /* Make an indirect call to FSIG passing an additional argument */
3019 static MonoInst*
3020 emit_extra_arg_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **orig_args, int arg_reg, MonoInst *call_target)
3021 {
3022         MonoMethodSignature *csig;
3023         MonoInst *args_buf [16];
3024         MonoInst **args;
3025         int i, pindex, tmp_reg;
3026
3027         /* Make a call with an rgctx/extra arg */
3028         if (fsig->param_count + 2 < 16)
3029                 args = args_buf;
3030         else
3031                 args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (fsig->param_count + 2));
3032         pindex = 0;
3033         if (fsig->hasthis)
3034                 args [pindex ++] = orig_args [0];
3035         for (i = 0; i < fsig->param_count; ++i)
3036                 args [pindex ++] = orig_args [fsig->hasthis + i];
3037         tmp_reg = alloc_preg (cfg);
3038         EMIT_NEW_UNALU (cfg, args [pindex], OP_MOVE, tmp_reg, arg_reg);
3039         csig = sig_to_rgctx_sig (fsig);
3040         return mono_emit_calli (cfg, csig, args, call_target, NULL, NULL);
3041 }
3042
3043 /* Emit an indirect call to the function descriptor ADDR */
3044 static MonoInst*
3045 emit_llvmonly_calli (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, MonoInst *addr)
3046 {
3047         int addr_reg, arg_reg;
3048         MonoInst *call_target;
3049
3050         g_assert (cfg->llvm_only);
3051
3052         /*
3053          * addr points to a <addr, arg> pair, load both of them, and
3054          * make a call to addr, passing arg as an extra arg.
3055          */
3056         addr_reg = alloc_preg (cfg);
3057         EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, addr->dreg, 0);
3058         arg_reg = alloc_preg (cfg);
3059         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, addr->dreg, sizeof (gpointer));
3060
3061         return emit_extra_arg_calli (cfg, fsig, args, arg_reg, call_target);
3062 }
3063
3064 static gboolean
3065 direct_icalls_enabled (MonoCompile *cfg)
3066 {
3067         /* LLVM on amd64 can't handle calls to non-32 bit addresses */
3068 #ifdef TARGET_AMD64
3069         if (cfg->compile_llvm)
3070                 return FALSE;
3071 #endif
3072         if (cfg->gen_sdb_seq_points || cfg->disable_direct_icalls)
3073                 return FALSE;
3074         return TRUE;
3075 }
3076
3077 MonoInst*
3078 mono_emit_jit_icall_by_info (MonoCompile *cfg, MonoJitICallInfo *info, MonoInst **args)
3079 {
3080         /*
3081          * Call the jit icall without a wrapper if possible.
3082          * The wrapper is needed for the following reasons:
3083          * - to handle exceptions thrown using mono_raise_exceptions () from the
3084          *   icall function. The EH code needs the lmf frame pushed by the
3085          *   wrapper to be able to unwind back to managed code.
3086          * - to be able to do stack walks for asynchronously suspended
3087          *   threads when debugging.
3088          */
3089         if (info->no_raise && direct_icalls_enabled (cfg)) {
3090                 char *name;
3091                 int costs;
3092
3093                 if (!info->wrapper_method) {
3094                         name = g_strdup_printf ("__icall_wrapper_%s", info->name);
3095                         info->wrapper_method = mono_marshal_get_icall_wrapper (info->sig, name, info->func, TRUE);
3096                         g_free (name);
3097                         mono_memory_barrier ();
3098                 }
3099
3100                 /*
3101                  * Inline the wrapper method, which is basically a call to the C icall, and
3102                  * an exception check.
3103                  */
3104                 costs = inline_method (cfg, info->wrapper_method, NULL,
3105                                                            args, NULL, cfg->real_offset, TRUE);
3106                 g_assert (costs > 0);
3107                 g_assert (!MONO_TYPE_IS_VOID (info->sig->ret));
3108
3109                 return args [0];
3110         } else {
3111                 return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, args);
3112         }
3113 }
3114
3115 static MonoInst*
3116 mono_emit_widen_call_res (MonoCompile *cfg, MonoInst *ins, MonoMethodSignature *fsig)
3117 {
3118         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
3119                 if ((fsig->pinvoke || LLVM_ENABLED) && !fsig->ret->byref) {
3120                         int widen_op = -1;
3121
3122                         /*
3123                          * Native code might return non register sized integers
3124                          * without initializing the upper bits.
3125                          */
3126                         switch (mono_type_to_load_membase (cfg, fsig->ret)) {
3127                         case OP_LOADI1_MEMBASE:
3128                                 widen_op = OP_ICONV_TO_I1;
3129                                 break;
3130                         case OP_LOADU1_MEMBASE:
3131                                 widen_op = OP_ICONV_TO_U1;
3132                                 break;
3133                         case OP_LOADI2_MEMBASE:
3134                                 widen_op = OP_ICONV_TO_I2;
3135                                 break;
3136                         case OP_LOADU2_MEMBASE:
3137                                 widen_op = OP_ICONV_TO_U2;
3138                                 break;
3139                         default:
3140                                 break;
3141                         }
3142
3143                         if (widen_op != -1) {
3144                                 int dreg = alloc_preg (cfg);
3145                                 MonoInst *widen;
3146
3147                                 EMIT_NEW_UNALU (cfg, widen, widen_op, dreg, ins->dreg);
3148                                 widen->type = ins->type;
3149                                 ins = widen;
3150                         }
3151                 }
3152         }
3153
3154         return ins;
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], mono_gc_get_aligned_size_for_allocator (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], mono_gc_get_aligned_size_for_allocator (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         context_used = mini_class_check_context_used (cfg, klass);
4529
4530         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
4531                 res = emit_castclass_with_cache_nonshared (cfg, src, klass);
4532                 (*inline_costs) += 2;
4533                 return res;
4534         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
4535                 MonoMethod *mono_castclass;
4536                 MonoInst *iargs [1];
4537                 int costs;
4538
4539                 mono_castclass = mono_marshal_get_castclass (klass);
4540                 iargs [0] = src;
4541
4542                 save_cast_details (cfg, klass, src->dreg, TRUE);
4543                 costs = inline_method (cfg, mono_castclass, mono_method_signature (mono_castclass),
4544                                                            iargs, ip, cfg->real_offset, TRUE);
4545                 reset_cast_details (cfg);
4546                 CHECK_CFG_EXCEPTION;
4547                 g_assert (costs > 0);
4548
4549                 cfg->real_offset += 5;
4550
4551                 (*inline_costs) += costs;
4552
4553                 return src;
4554         }
4555
4556         if (context_used) {
4557                 MonoInst *args [3];
4558
4559                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4560                         MonoInst *cache_ins;
4561
4562                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4563
4564                         /* obj */
4565                         args [0] = src;
4566
4567                         /* klass - it's the second element of the cache entry*/
4568                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4569
4570                         /* cache */
4571                         args [2] = cache_ins;
4572
4573                         return emit_castclass_with_cache (cfg, klass, args);
4574                 }
4575
4576                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4577         }
4578
4579         NEW_BBLOCK (cfg, is_null_bb);
4580
4581         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4582         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, is_null_bb);
4583
4584         save_cast_details (cfg, klass, obj_reg, FALSE);
4585
4586         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4587                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4588                 mini_emit_iface_cast (cfg, vtable_reg, klass, NULL, NULL);
4589         } else {
4590                 int klass_reg = alloc_preg (cfg);
4591
4592                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4593
4594                 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4595                         /* the remoting code is broken, access the class for now */
4596                         if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4597                                 MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4598                                 if (!vt) {
4599                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4600                                         cfg->exception_ptr = klass;
4601                                         return NULL;
4602                                 }
4603                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4604                         } else {
4605                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4606                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4607                         }
4608                         MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
4609                 } else {
4610                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4611                         mini_emit_castclass_inst (cfg, obj_reg, klass_reg, klass, klass_inst, is_null_bb);
4612                 }
4613         }
4614
4615         MONO_START_BB (cfg, is_null_bb);
4616
4617         reset_cast_details (cfg);
4618
4619         return src;
4620
4621 exception_exit:
4622         return NULL;
4623 }
4624
4625 /*
4626  * Returns NULL and set the cfg exception on error.
4627  */
4628 static MonoInst*
4629 handle_isinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src, int context_used)
4630 {
4631         MonoInst *ins;
4632         MonoBasicBlock *is_null_bb, *false_bb, *end_bb;
4633         int obj_reg = src->dreg;
4634         int vtable_reg = alloc_preg (cfg);
4635         int res_reg = alloc_ireg_ref (cfg);
4636         MonoInst *klass_inst = NULL;
4637
4638         if (context_used) {
4639                 MonoInst *args [3];
4640
4641                 if(mini_class_has_reference_variant_generic_argument (cfg, klass, context_used) || is_complex_isinst (klass)) {
4642                         MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
4643                         MonoInst *cache_ins;
4644
4645                         cache_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_CAST_CACHE);
4646
4647                         /* obj */
4648                         args [0] = src;
4649
4650                         /* klass - it's the second element of the cache entry*/
4651                         EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
4652
4653                         /* cache */
4654                         args [2] = cache_ins;
4655
4656                         return mono_emit_method_call (cfg, mono_isinst, args, NULL);
4657                 }
4658
4659                 klass_inst = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
4660         }
4661
4662         NEW_BBLOCK (cfg, is_null_bb);
4663         NEW_BBLOCK (cfg, false_bb);
4664         NEW_BBLOCK (cfg, end_bb);
4665
4666         /* Do the assignment at the beginning, so the other assignment can be if converted */
4667         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, res_reg, obj_reg);
4668         ins->type = STACK_OBJ;
4669         ins->klass = klass;
4670
4671         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4672         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_null_bb);
4673
4674         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, vtable_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4675
4676         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4677                 g_assert (!context_used);
4678                 /* the is_null_bb target simply copies the input register to the output */
4679                 mini_emit_iface_cast (cfg, vtable_reg, klass, false_bb, is_null_bb);
4680         } else {
4681                 int klass_reg = alloc_preg (cfg);
4682
4683                 if (klass->rank) {
4684                         int rank_reg = alloc_preg (cfg);
4685                         int eclass_reg = alloc_preg (cfg);
4686
4687                         g_assert (!context_used);
4688                         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
4689                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, rank_reg, klass->rank);
4690                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4691                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4692                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, MONO_STRUCT_OFFSET (MonoClass, cast_class));
4693                         if (klass->cast_class == mono_defaults.object_class) {
4694                                 int parent_reg = alloc_preg (cfg);
4695                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, parent_reg, eclass_reg, MONO_STRUCT_OFFSET (MonoClass, parent));
4696                                 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
4697                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4698                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4699                         } else if (klass->cast_class == mono_defaults.enum_class->parent) {
4700                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
4701                                 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class, OP_PBEQ, is_null_bb);
4702                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false_bb);
4703                         } else if (klass->cast_class == mono_defaults.enum_class) {
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->flags & TYPE_ATTRIBUTE_INTERFACE) {
4707                                 mini_emit_iface_class_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4708                         } else {
4709                                 if ((klass->rank == 1) && (klass->byval_arg.type == MONO_TYPE_SZARRAY)) {
4710                                         /* Check that the object is a vector too */
4711                                         int bounds_reg = alloc_preg (cfg);
4712                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg, obj_reg, MONO_STRUCT_OFFSET (MonoArray, bounds));
4713                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
4714                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4715                                 }
4716
4717                                 /* the is_null_bb target simply copies the input register to the output */
4718                                 mini_emit_isninst_cast (cfg, eclass_reg, klass->cast_class, false_bb, is_null_bb);
4719                         }
4720                 } else if (mono_class_is_nullable (klass)) {
4721                         g_assert (!context_used);
4722                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4723                         /* the is_null_bb target simply copies the input register to the output */
4724                         mini_emit_isninst_cast (cfg, klass_reg, klass->cast_class, false_bb, is_null_bb);
4725                 } else {
4726                         if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
4727                                 g_assert (!context_used);
4728                                 /* the remoting code is broken, access the class for now */
4729                                 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
4730                                         MonoVTable *vt = mono_class_vtable (cfg->domain, klass);
4731                                         if (!vt) {
4732                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
4733                                                 cfg->exception_ptr = klass;
4734                                                 return NULL;
4735                                         }
4736                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, vtable_reg, vt);
4737                                 } else {
4738                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4739                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, klass_reg, klass);
4740                                 }
4741                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false_bb);
4742                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, is_null_bb);
4743                         } else {
4744                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4745                                 /* the is_null_bb target simply copies the input register to the output */
4746                                 mini_emit_isninst_cast_inst (cfg, klass_reg, klass, klass_inst, false_bb, is_null_bb);
4747                         }
4748                 }
4749         }
4750
4751         MONO_START_BB (cfg, false_bb);
4752
4753         MONO_EMIT_NEW_PCONST (cfg, res_reg, 0);
4754         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4755
4756         MONO_START_BB (cfg, is_null_bb);
4757
4758         MONO_START_BB (cfg, end_bb);
4759
4760         return ins;
4761 }
4762
4763 static MonoInst*
4764 handle_cisinst (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4765 {
4766         /* This opcode takes as input an object reference and a class, and returns:
4767         0) if the object is an instance of the class,
4768         1) if the object is not instance of the class,
4769         2) if the object is a proxy whose type cannot be determined */
4770
4771         MonoInst *ins;
4772 #ifndef DISABLE_REMOTING
4773         MonoBasicBlock *true_bb, *false_bb, *false2_bb, *end_bb, *no_proxy_bb, *interface_fail_bb;
4774 #else
4775         MonoBasicBlock *true_bb, *false_bb, *end_bb;
4776 #endif
4777         int obj_reg = src->dreg;
4778         int dreg = alloc_ireg (cfg);
4779         int tmp_reg;
4780 #ifndef DISABLE_REMOTING
4781         int klass_reg = alloc_preg (cfg);
4782 #endif
4783
4784         NEW_BBLOCK (cfg, true_bb);
4785         NEW_BBLOCK (cfg, false_bb);
4786         NEW_BBLOCK (cfg, end_bb);
4787 #ifndef DISABLE_REMOTING
4788         NEW_BBLOCK (cfg, false2_bb);
4789         NEW_BBLOCK (cfg, no_proxy_bb);
4790 #endif
4791
4792         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4793         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, false_bb);
4794
4795         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4796 #ifndef DISABLE_REMOTING
4797                 NEW_BBLOCK (cfg, interface_fail_bb);
4798 #endif
4799
4800                 tmp_reg = alloc_preg (cfg);
4801                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4802 #ifndef DISABLE_REMOTING
4803                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, true_bb);
4804                 MONO_START_BB (cfg, interface_fail_bb);
4805                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4806
4807                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
4808
4809                 tmp_reg = alloc_preg (cfg);
4810                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4811                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4812                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, false2_bb);
4813 #else
4814                 mini_emit_iface_cast (cfg, tmp_reg, klass, false_bb, true_bb);
4815 #endif
4816         } else {
4817 #ifndef DISABLE_REMOTING
4818                 tmp_reg = alloc_preg (cfg);
4819                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4820                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4821
4822                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4823                 tmp_reg = alloc_preg (cfg);
4824                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4825                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4826
4827                 tmp_reg = alloc_preg (cfg);
4828                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4829                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4830                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4831
4832                 mini_emit_isninst_cast (cfg, klass_reg, klass, false2_bb, true_bb);
4833                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, false2_bb);
4834
4835                 MONO_START_BB (cfg, no_proxy_bb);
4836
4837                 mini_emit_isninst_cast (cfg, klass_reg, klass, false_bb, true_bb);
4838 #else
4839                 g_error ("transparent proxy support is disabled while trying to JIT code that uses it");
4840 #endif
4841         }
4842
4843         MONO_START_BB (cfg, false_bb);
4844
4845         MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4846         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4847
4848 #ifndef DISABLE_REMOTING
4849         MONO_START_BB (cfg, false2_bb);
4850
4851         MONO_EMIT_NEW_ICONST (cfg, dreg, 2);
4852         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4853 #endif
4854
4855         MONO_START_BB (cfg, true_bb);
4856
4857         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4858
4859         MONO_START_BB (cfg, end_bb);
4860
4861         /* FIXME: */
4862         MONO_INST_NEW (cfg, ins, OP_ICONST);
4863         ins->dreg = dreg;
4864         ins->type = STACK_I4;
4865
4866         return ins;
4867 }
4868
4869 static MonoInst*
4870 handle_ccastclass (MonoCompile *cfg, MonoClass *klass, MonoInst *src)
4871 {
4872         /* This opcode takes as input an object reference and a class, and returns:
4873         0) if the object is an instance of the class,
4874         1) if the object is a proxy whose type cannot be determined
4875         an InvalidCastException exception is thrown otherwhise*/
4876
4877         MonoInst *ins;
4878 #ifndef DISABLE_REMOTING
4879         MonoBasicBlock *end_bb, *ok_result_bb, *no_proxy_bb, *interface_fail_bb, *fail_1_bb;
4880 #else
4881         MonoBasicBlock *ok_result_bb;
4882 #endif
4883         int obj_reg = src->dreg;
4884         int dreg = alloc_ireg (cfg);
4885         int tmp_reg = alloc_preg (cfg);
4886
4887 #ifndef DISABLE_REMOTING
4888         int klass_reg = alloc_preg (cfg);
4889         NEW_BBLOCK (cfg, end_bb);
4890 #endif
4891
4892         NEW_BBLOCK (cfg, ok_result_bb);
4893
4894         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, obj_reg, 0);
4895         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, ok_result_bb);
4896
4897         save_cast_details (cfg, klass, obj_reg, FALSE);
4898
4899         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
4900 #ifndef DISABLE_REMOTING
4901                 NEW_BBLOCK (cfg, interface_fail_bb);
4902
4903                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4904                 mini_emit_iface_cast (cfg, tmp_reg, klass, interface_fail_bb, ok_result_bb);
4905                 MONO_START_BB (cfg, interface_fail_bb);
4906                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4907
4908                 mini_emit_class_check (cfg, klass_reg, mono_defaults.transparent_proxy_class);
4909
4910                 tmp_reg = alloc_preg (cfg);
4911                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4912                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4913                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "InvalidCastException");
4914
4915                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4916                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4917 #else
4918                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4919                 mini_emit_iface_cast (cfg, tmp_reg, klass, NULL, NULL);
4920                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, ok_result_bb);
4921 #endif
4922         } else {
4923 #ifndef DISABLE_REMOTING
4924                 NEW_BBLOCK (cfg, no_proxy_bb);
4925
4926                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
4927                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoVTable, klass));
4928                 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
4929
4930                 tmp_reg = alloc_preg (cfg);
4931                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
4932                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, MONO_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
4933
4934                 tmp_reg = alloc_preg (cfg);
4935                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, MONO_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
4936                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, tmp_reg, 0);
4937                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, no_proxy_bb);
4938
4939                 NEW_BBLOCK (cfg, fail_1_bb);
4940
4941                 mini_emit_isninst_cast (cfg, klass_reg, klass, fail_1_bb, ok_result_bb);
4942
4943                 MONO_START_BB (cfg, fail_1_bb);
4944
4945                 MONO_EMIT_NEW_ICONST (cfg, dreg, 1);
4946                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
4947
4948                 MONO_START_BB (cfg, no_proxy_bb);
4949
4950                 mini_emit_castclass (cfg, obj_reg, klass_reg, klass, ok_result_bb);
4951 #else
4952                 g_error ("Transparent proxy support is disabled while trying to JIT code that uses it");
4953 #endif
4954         }
4955
4956         MONO_START_BB (cfg, ok_result_bb);
4957
4958         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
4959
4960 #ifndef DISABLE_REMOTING
4961         MONO_START_BB (cfg, end_bb);
4962 #endif
4963
4964         /* FIXME: */
4965         MONO_INST_NEW (cfg, ins, OP_ICONST);
4966         ins->dreg = dreg;
4967         ins->type = STACK_I4;
4968
4969         return ins;
4970 }
4971
4972 static G_GNUC_UNUSED MonoInst*
4973 handle_enum_has_flag (MonoCompile *cfg, MonoClass *klass, MonoInst *enum_this, MonoInst *enum_flag)
4974 {
4975         MonoType *enum_type = mono_type_get_underlying_type (&klass->byval_arg);
4976         guint32 load_opc = mono_type_to_load_membase (cfg, enum_type);
4977         gboolean is_i4;
4978
4979         switch (enum_type->type) {
4980         case MONO_TYPE_I8:
4981         case MONO_TYPE_U8:
4982 #if SIZEOF_REGISTER == 8
4983         case MONO_TYPE_I:
4984         case MONO_TYPE_U:
4985 #endif
4986                 is_i4 = FALSE;
4987                 break;
4988         default:
4989                 is_i4 = TRUE;
4990                 break;
4991         }
4992
4993         {
4994                 MonoInst *load, *and_, *cmp, *ceq;
4995                 int enum_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4996                 int and_reg = is_i4 ? alloc_ireg (cfg) : alloc_lreg (cfg);
4997                 int dest_reg = alloc_ireg (cfg);
4998
4999                 EMIT_NEW_LOAD_MEMBASE (cfg, load, load_opc, enum_reg, enum_this->dreg, 0);
5000                 EMIT_NEW_BIALU (cfg, and_, is_i4 ? OP_IAND : OP_LAND, and_reg, enum_reg, enum_flag->dreg);
5001                 EMIT_NEW_BIALU (cfg, cmp, is_i4 ? OP_ICOMPARE : OP_LCOMPARE, -1, and_reg, enum_flag->dreg);
5002                 EMIT_NEW_UNALU (cfg, ceq, is_i4 ? OP_ICEQ : OP_LCEQ, dest_reg, -1);
5003
5004                 ceq->type = STACK_I4;
5005
5006                 if (!is_i4) {
5007                         load = mono_decompose_opcode (cfg, load);
5008                         and_ = mono_decompose_opcode (cfg, and_);
5009                         cmp = mono_decompose_opcode (cfg, cmp);
5010                         ceq = mono_decompose_opcode (cfg, ceq);
5011                 }
5012
5013                 return ceq;
5014         }
5015 }
5016
5017 /*
5018  * Returns NULL and set the cfg exception on error.
5019  */
5020 static G_GNUC_UNUSED MonoInst*
5021 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used, gboolean virtual_)
5022 {
5023         MonoInst *ptr;
5024         int dreg;
5025         gpointer trampoline;
5026         MonoInst *obj, *method_ins, *tramp_ins;
5027         MonoDomain *domain;
5028         guint8 **code_slot;
5029
5030         if (virtual_ && !cfg->llvm_only) {
5031                 MonoMethod *invoke = mono_get_delegate_invoke (klass);
5032                 g_assert (invoke);
5033
5034                 if (!mono_get_delegate_virtual_invoke_impl (mono_method_signature (invoke), context_used ? NULL : method))
5035                         return NULL;
5036         }
5037
5038         obj = handle_alloc (cfg, klass, FALSE, mono_class_check_context_used (klass));
5039         if (!obj)
5040                 return NULL;
5041
5042         /* Inline the contents of mono_delegate_ctor */
5043
5044         /* Set target field */
5045         /* Optimize away setting of NULL target */
5046         if (!(target->opcode == OP_PCONST && target->inst_p0 == 0)) {
5047                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
5048                 if (cfg->gen_write_barriers) {
5049                         dreg = alloc_preg (cfg);
5050                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, target));
5051                         emit_write_barrier (cfg, ptr, target);
5052                 }
5053         }
5054
5055         /* Set method field */
5056         method_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5057         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
5058
5059         /*
5060          * To avoid looking up the compiled code belonging to the target method
5061          * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
5062          * store it, and we fill it after the method has been compiled.
5063          */
5064         if (!method->dynamic && !(cfg->opt & MONO_OPT_SHARED)) {
5065                 MonoInst *code_slot_ins;
5066
5067                 if (context_used) {
5068                         code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
5069                 } else {
5070                         domain = mono_domain_get ();
5071                         mono_domain_lock (domain);
5072                         if (!domain_jit_info (domain)->method_code_hash)
5073                                 domain_jit_info (domain)->method_code_hash = g_hash_table_new (NULL, NULL);
5074                         code_slot = (guint8 **)g_hash_table_lookup (domain_jit_info (domain)->method_code_hash, method);
5075                         if (!code_slot) {
5076                                 code_slot = (guint8 **)mono_domain_alloc0 (domain, sizeof (gpointer));
5077                                 g_hash_table_insert (domain_jit_info (domain)->method_code_hash, method, code_slot);
5078                         }
5079                         mono_domain_unlock (domain);
5080
5081                         code_slot_ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_METHOD_CODE_SLOT, method);
5082                 }
5083                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
5084         }
5085
5086         if (cfg->llvm_only) {
5087                 MonoInst *args [16];
5088
5089                 if (virtual_) {
5090                         args [0] = obj;
5091                         args [1] = target;
5092                         args [2] = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD);
5093                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate_virtual, args);
5094                 } else {
5095                         args [0] = obj;
5096                         mono_emit_jit_icall (cfg, mono_llvmonly_init_delegate, args);
5097                 }
5098
5099                 return obj;
5100         }
5101
5102         if (cfg->compile_aot) {
5103                 MonoDelegateClassMethodPair *del_tramp;
5104
5105                 del_tramp = (MonoDelegateClassMethodPair *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDelegateClassMethodPair));
5106                 del_tramp->klass = klass;
5107                 del_tramp->method = context_used ? NULL : method;
5108                 del_tramp->is_virtual = virtual_;
5109                 EMIT_NEW_AOTCONST (cfg, tramp_ins, MONO_PATCH_INFO_DELEGATE_TRAMPOLINE, del_tramp);
5110         } else {
5111                 if (virtual_)
5112                         trampoline = mono_create_delegate_virtual_trampoline (cfg->domain, klass, context_used ? NULL : method);
5113                 else
5114                         trampoline = mono_create_delegate_trampoline_info (cfg->domain, klass, context_used ? NULL : method);
5115                 EMIT_NEW_PCONST (cfg, tramp_ins, trampoline);
5116         }
5117
5118         /* Set invoke_impl field */
5119         if (virtual_) {
5120                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
5121         } else {
5122                 dreg = alloc_preg (cfg);
5123                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, invoke_impl));
5124                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, invoke_impl), dreg);
5125
5126                 dreg = alloc_preg (cfg);
5127                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, dreg, tramp_ins->dreg, MONO_STRUCT_OFFSET (MonoDelegateTrampInfo, method_ptr));
5128                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr), dreg);
5129         }
5130
5131         dreg = alloc_preg (cfg);
5132         MONO_EMIT_NEW_ICONST (cfg, dreg, virtual_ ? 1 : 0);
5133         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, obj->dreg, MONO_STRUCT_OFFSET (MonoDelegate, method_is_virtual), dreg);
5134
5135         /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
5136
5137         return obj;
5138 }
5139
5140 static MonoInst*
5141 handle_array_new (MonoCompile *cfg, int rank, MonoInst **sp, unsigned char *ip)
5142 {
5143         MonoJitICallInfo *info;
5144
5145         /* Need to register the icall so it gets an icall wrapper */
5146         info = mono_get_array_new_va_icall (rank);
5147
5148         cfg->flags |= MONO_CFG_HAS_VARARGS;
5149
5150         /* mono_array_new_va () needs a vararg calling convention */
5151         cfg->exception_message = g_strdup ("array-new");
5152         cfg->disable_llvm = TRUE;
5153
5154         /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
5155         return mono_emit_native_call (cfg, mono_icall_get_wrapper (info), info->sig, sp);
5156 }
5157
5158 /*
5159  * handle_constrained_gsharedvt_call:
5160  *
5161  *   Handle constrained calls where the receiver is a gsharedvt type.
5162  * Return the instruction representing the call. Set the cfg exception on failure.
5163  */
5164 static MonoInst*
5165 handle_constrained_gsharedvt_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp, MonoClass *constrained_class,
5166                                                                    gboolean *ref_emit_widen)
5167 {
5168         MonoInst *ins = NULL;
5169         gboolean emit_widen = *ref_emit_widen;
5170
5171         /*
5172          * Constrained calls need to behave differently at runtime dependending on whenever the receiver is instantiated as ref type or as a vtype.
5173          * 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
5174          * pack the arguments into an array, and do the rest of the work in in an icall.
5175          */
5176         if (((cmethod->klass == mono_defaults.object_class) || (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) || (!cmethod->klass->valuetype && cmethod->klass->image != mono_defaults.corlib)) &&
5177                 (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)) &&
5178                 (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]))))) {
5179                 MonoInst *args [16];
5180
5181                 /*
5182                  * This case handles calls to
5183                  * - object:ToString()/Equals()/GetHashCode(),
5184                  * - System.IComparable<T>:CompareTo()
5185                  * - System.IEquatable<T>:Equals ()
5186                  * plus some simple interface calls enough to support AsyncTaskMethodBuilder.
5187                  */
5188
5189                 args [0] = sp [0];
5190                 if (mono_method_check_context_used (cmethod))
5191                         args [1] = emit_get_rgctx_method (cfg, mono_method_check_context_used (cmethod), cmethod, MONO_RGCTX_INFO_METHOD);
5192                 else
5193                         EMIT_NEW_METHODCONST (cfg, args [1], cmethod);
5194                 args [2] = emit_get_rgctx_klass (cfg, mono_class_check_context_used (constrained_class), constrained_class, MONO_RGCTX_INFO_KLASS);
5195
5196                 /* !fsig->hasthis is for the wrapper for the Object.GetType () icall */
5197                 if (fsig->hasthis && fsig->param_count) {
5198                         /* Pass the arguments using a localloc-ed array using the format expected by runtime_invoke () */
5199                         MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
5200                         ins->dreg = alloc_preg (cfg);
5201                         ins->inst_imm = fsig->param_count * sizeof (mgreg_t);
5202                         MONO_ADD_INS (cfg->cbb, ins);
5203                         args [4] = ins;
5204
5205                         if (mini_is_gsharedvt_type (fsig->params [0])) {
5206                                 int addr_reg, deref_arg_reg;
5207
5208                                 ins = emit_get_gsharedvt_info_klass (cfg, mono_class_from_mono_type (fsig->params [0]), MONO_RGCTX_INFO_CLASS_BOX_TYPE);
5209                                 deref_arg_reg = alloc_preg (cfg);
5210                                 /* deref_arg = BOX_TYPE != MONO_GSHAREDVT_BOX_TYPE_VTYPE */
5211                                 EMIT_NEW_BIALU_IMM (cfg, args [3], OP_ISUB_IMM, deref_arg_reg, ins->dreg, 1);
5212
5213                                 EMIT_NEW_VARLOADA_VREG (cfg, ins, sp [1]->dreg, fsig->params [0]);
5214                                 addr_reg = ins->dreg;
5215                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, addr_reg);
5216                         } else {
5217                                 EMIT_NEW_ICONST (cfg, args [3], 0);
5218                                 EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STORE_MEMBASE_REG, args [4]->dreg, 0, sp [1]->dreg);
5219                         }
5220                 } else {
5221                         EMIT_NEW_ICONST (cfg, args [3], 0);
5222                         EMIT_NEW_ICONST (cfg, args [4], 0);
5223                 }
5224                 ins = mono_emit_jit_icall (cfg, mono_gsharedvt_constrained_call, args);
5225                 emit_widen = FALSE;
5226
5227                 if (mini_is_gsharedvt_type (fsig->ret)) {
5228                         ins = handle_unbox_gsharedvt (cfg, mono_class_from_mono_type (fsig->ret), ins);
5229                 } else if (MONO_TYPE_IS_PRIMITIVE (fsig->ret) || MONO_TYPE_ISSTRUCT (fsig->ret)) {
5230                         MonoInst *add;
5231
5232                         /* Unbox */
5233                         NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), ins->dreg, sizeof (MonoObject));
5234                         MONO_ADD_INS (cfg->cbb, add);
5235                         /* Load value */
5236                         NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, add->dreg, 0);
5237                         MONO_ADD_INS (cfg->cbb, ins);
5238                         /* ins represents the call result */
5239                 }
5240         } else {
5241                 GSHAREDVT_FAILURE (CEE_CALLVIRT);
5242         }
5243
5244         *ref_emit_widen = emit_widen;
5245
5246         return ins;
5247
5248  exception_exit:
5249         return NULL;
5250 }
5251
5252 static void
5253 mono_emit_load_got_addr (MonoCompile *cfg)
5254 {
5255         MonoInst *getaddr, *dummy_use;
5256
5257         if (!cfg->got_var || cfg->got_var_allocated)
5258                 return;
5259
5260         MONO_INST_NEW (cfg, getaddr, OP_LOAD_GOTADDR);
5261         getaddr->cil_code = cfg->header->code;
5262         getaddr->dreg = cfg->got_var->dreg;
5263
5264         /* Add it to the start of the first bblock */
5265         if (cfg->bb_entry->code) {
5266                 getaddr->next = cfg->bb_entry->code;
5267                 cfg->bb_entry->code = getaddr;
5268         }
5269         else
5270                 MONO_ADD_INS (cfg->bb_entry, getaddr);
5271
5272         cfg->got_var_allocated = TRUE;
5273
5274         /*
5275          * Add a dummy use to keep the got_var alive, since real uses might
5276          * only be generated by the back ends.
5277          * Add it to end_bblock, so the variable's lifetime covers the whole
5278          * method.
5279          * It would be better to make the usage of the got var explicit in all
5280          * cases when the backend needs it (i.e. calls, throw etc.), so this
5281          * wouldn't be needed.
5282          */
5283         NEW_DUMMY_USE (cfg, dummy_use, cfg->got_var);
5284         MONO_ADD_INS (cfg->bb_exit, dummy_use);
5285 }
5286
5287 static int inline_limit;
5288 static gboolean inline_limit_inited;
5289
5290 static gboolean
5291 mono_method_check_inlining (MonoCompile *cfg, MonoMethod *method)
5292 {
5293         MonoMethodHeaderSummary header;
5294         MonoVTable *vtable;
5295 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5296         MonoMethodSignature *sig = mono_method_signature (method);
5297         int i;
5298 #endif
5299
5300         if (cfg->disable_inline)
5301                 return FALSE;
5302         if (cfg->gshared)
5303                 return FALSE;
5304
5305         if (cfg->inline_depth > 10)
5306                 return FALSE;
5307
5308         if (!mono_method_get_header_summary (method, &header))
5309                 return FALSE;
5310
5311         /*runtime, icall and pinvoke are checked by summary call*/
5312         if ((method->iflags & METHOD_IMPL_ATTRIBUTE_NOINLINING) ||
5313             (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) ||
5314             (mono_class_is_marshalbyref (method->klass)) ||
5315             header.has_clauses)
5316                 return FALSE;
5317
5318         /* also consider num_locals? */
5319         /* Do the size check early to avoid creating vtables */
5320         if (!inline_limit_inited) {
5321                 if (g_getenv ("MONO_INLINELIMIT"))
5322                         inline_limit = atoi (g_getenv ("MONO_INLINELIMIT"));
5323                 else
5324                         inline_limit = INLINE_LENGTH_LIMIT;
5325                 inline_limit_inited = TRUE;
5326         }
5327         if (header.code_size >= inline_limit && !(method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))
5328                 return FALSE;
5329
5330         /*
5331          * if we can initialize the class of the method right away, we do,
5332          * otherwise we don't allow inlining if the class needs initialization,
5333          * since it would mean inserting a call to mono_runtime_class_init()
5334          * inside the inlined code
5335          */
5336         if (!(cfg->opt & MONO_OPT_SHARED)) {
5337                 /* The AggressiveInlining hint is a good excuse to force that cctor to run. */
5338                 if (method->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING) {
5339                         vtable = mono_class_vtable (cfg->domain, method->klass);
5340                         if (!vtable)
5341                                 return FALSE;
5342                         if (!cfg->compile_aot) {
5343                                 MonoError error;
5344                                 if (!mono_runtime_class_init_full (vtable, &error))
5345                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5346                         }
5347                 } else if (method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5348                         if (cfg->run_cctors && method->klass->has_cctor) {
5349                                 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
5350                                 if (!method->klass->runtime_info)
5351                                         /* No vtable created yet */
5352                                         return FALSE;
5353                                 vtable = mono_class_vtable (cfg->domain, method->klass);
5354                                 if (!vtable)
5355                                         return FALSE;
5356                                 /* This makes so that inline cannot trigger */
5357                                 /* .cctors: too many apps depend on them */
5358                                 /* running with a specific order... */
5359                                 if (! vtable->initialized)
5360                                         return FALSE;
5361                                 MonoError error;
5362                                 if (!mono_runtime_class_init_full (vtable, &error))
5363                                         mono_error_raise_exception (&error); /* FIXME don't raise here */
5364                         }
5365                 } else if (mono_class_needs_cctor_run (method->klass, NULL)) {
5366                         if (!method->klass->runtime_info)
5367                                 /* No vtable created yet */
5368                                 return FALSE;
5369                         vtable = mono_class_vtable (cfg->domain, method->klass);
5370                         if (!vtable)
5371                                 return FALSE;
5372                         if (!vtable->initialized)
5373                                 return FALSE;
5374                 }
5375         } else {
5376                 /*
5377                  * If we're compiling for shared code
5378                  * the cctor will need to be run at aot method load time, for example,
5379                  * or at the end of the compilation of the inlining method.
5380                  */
5381                 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
5382                         return FALSE;
5383         }
5384
5385 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
5386         if (mono_arch_is_soft_float ()) {
5387                 /* FIXME: */
5388                 if (sig->ret && sig->ret->type == MONO_TYPE_R4)
5389                         return FALSE;
5390                 for (i = 0; i < sig->param_count; ++i)
5391                         if (!sig->params [i]->byref && sig->params [i]->type == MONO_TYPE_R4)
5392                                 return FALSE;
5393         }
5394 #endif
5395
5396         if (g_list_find (cfg->dont_inline, method))
5397                 return FALSE;
5398
5399         return TRUE;
5400 }
5401
5402 static gboolean
5403 mini_field_access_needs_cctor_run (MonoCompile *cfg, MonoMethod *method, MonoClass *klass, MonoVTable *vtable)
5404 {
5405         if (!cfg->compile_aot) {
5406                 g_assert (vtable);
5407                 if (vtable->initialized)
5408                         return FALSE;
5409         }
5410
5411         if (klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) {
5412                 if (cfg->method == method)
5413                         return FALSE;
5414         }
5415
5416         if (!mono_class_needs_cctor_run (klass, method))
5417                 return FALSE;
5418
5419         if (! (method->flags & METHOD_ATTRIBUTE_STATIC) && (klass == method->klass))
5420                 /* The initialization is already done before the method is called */
5421                 return FALSE;
5422
5423         return TRUE;
5424 }
5425
5426 static MonoInst*
5427 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
5428 {
5429         MonoInst *ins;
5430         guint32 size;
5431         int mult_reg, add_reg, array_reg, index_reg, index2_reg;
5432         int context_used;
5433
5434         if (mini_is_gsharedvt_variable_klass (klass)) {
5435                 size = -1;
5436         } else {
5437                 mono_class_init (klass);
5438                 size = mono_class_array_element_size (klass);
5439         }
5440
5441         mult_reg = alloc_preg (cfg);
5442         array_reg = arr->dreg;
5443         index_reg = index->dreg;
5444
5445 #if SIZEOF_REGISTER == 8
5446         /* The array reg is 64 bits but the index reg is only 32 */
5447         if (COMPILE_LLVM (cfg)) {
5448                 /* Not needed */
5449                 index2_reg = index_reg;
5450         } else {
5451                 index2_reg = alloc_preg (cfg);
5452                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index2_reg, index_reg);
5453         }
5454 #else
5455         if (index->type == STACK_I8) {
5456                 index2_reg = alloc_preg (cfg);
5457                 MONO_EMIT_NEW_UNALU (cfg, OP_LCONV_TO_I4, index2_reg, index_reg);
5458         } else {
5459                 index2_reg = index_reg;
5460         }
5461 #endif
5462
5463         if (bcheck)
5464                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index2_reg);
5465
5466 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5467         if (size == 1 || size == 2 || size == 4 || size == 8) {
5468                 static const int fast_log2 [] = { 1, 0, 1, -1, 2, -1, -1, -1, 3 };
5469
5470                 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], MONO_STRUCT_OFFSET (MonoArray, vector));
5471                 ins->klass = mono_class_get_element_class (klass);
5472                 ins->type = STACK_MP;
5473
5474                 return ins;
5475         }
5476 #endif
5477
5478         add_reg = alloc_ireg_mp (cfg);
5479
5480         if (size == -1) {
5481                 MonoInst *rgctx_ins;
5482
5483                 /* gsharedvt */
5484                 g_assert (cfg->gshared);
5485                 context_used = mini_class_check_context_used (cfg, klass);
5486                 g_assert (context_used);
5487                 rgctx_ins = emit_get_gsharedvt_info_klass (cfg, klass, MONO_RGCTX_INFO_ARRAY_ELEMENT_SIZE);
5488                 MONO_EMIT_NEW_BIALU (cfg, OP_IMUL, mult_reg, index2_reg, rgctx_ins->dreg);
5489         } else {
5490                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_MUL_IMM, mult_reg, index2_reg, size);
5491         }
5492         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, array_reg, mult_reg);
5493         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5494         ins->klass = mono_class_get_element_class (klass);
5495         ins->type = STACK_MP;
5496         MONO_ADD_INS (cfg->cbb, ins);
5497
5498         return ins;
5499 }
5500
5501 static MonoInst*
5502 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
5503 {
5504         int bounds_reg = alloc_preg (cfg);
5505         int add_reg = alloc_ireg_mp (cfg);
5506         int mult_reg = alloc_preg (cfg);
5507         int mult2_reg = alloc_preg (cfg);
5508         int low1_reg = alloc_preg (cfg);
5509         int low2_reg = alloc_preg (cfg);
5510         int high1_reg = alloc_preg (cfg);
5511         int high2_reg = alloc_preg (cfg);
5512         int realidx1_reg = alloc_preg (cfg);
5513         int realidx2_reg = alloc_preg (cfg);
5514         int sum_reg = alloc_preg (cfg);
5515         int index1, index2, tmpreg;
5516         MonoInst *ins;
5517         guint32 size;
5518
5519         mono_class_init (klass);
5520         size = mono_class_array_element_size (klass);
5521
5522         index1 = index_ins1->dreg;
5523         index2 = index_ins2->dreg;
5524
5525 #if SIZEOF_REGISTER == 8
5526         /* The array reg is 64 bits but the index reg is only 32 */
5527         if (COMPILE_LLVM (cfg)) {
5528                 /* Not needed */
5529         } else {
5530                 tmpreg = alloc_preg (cfg);
5531                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index1);
5532                 index1 = tmpreg;
5533                 tmpreg = alloc_preg (cfg);
5534                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, tmpreg, index2);
5535                 index2 = tmpreg;
5536         }
5537 #else
5538         // FIXME: Do we need to do something here for i8 indexes, like in ldelema_1_ins ?
5539         tmpreg = -1;
5540 #endif
5541
5542         /* range checking */
5543         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
5544                                        arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
5545
5546         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,
5547                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5548         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx1_reg, index1, low1_reg);
5549         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high1_reg,
5550                                        bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5551         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high1_reg, realidx1_reg);
5552         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5553
5554         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low2_reg,
5555                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
5556         MONO_EMIT_NEW_BIALU (cfg, OP_PSUB, realidx2_reg, index2, low2_reg);
5557         MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, high2_reg,
5558                                        bounds_reg, sizeof (MonoArrayBounds) + MONO_STRUCT_OFFSET (MonoArrayBounds, length));
5559         MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, high2_reg, realidx2_reg);
5560         MONO_EMIT_NEW_COND_EXC (cfg, LE_UN, "IndexOutOfRangeException");
5561
5562         MONO_EMIT_NEW_BIALU (cfg, OP_PMUL, mult_reg, high2_reg, realidx1_reg);
5563         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, mult_reg, realidx2_reg);
5564         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PMUL_IMM, mult2_reg, sum_reg, size);
5565         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult2_reg, arr->dreg);
5566         NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, add_reg, add_reg, MONO_STRUCT_OFFSET (MonoArray, vector));
5567
5568         ins->type = STACK_MP;
5569         ins->klass = klass;
5570         MONO_ADD_INS (cfg->cbb, ins);
5571
5572         return ins;
5573 }
5574
5575 static MonoInst*
5576 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
5577 {
5578         int rank;
5579         MonoInst *addr;
5580         MonoMethod *addr_method;
5581         int element_size;
5582         MonoClass *eclass = cmethod->klass->element_class;
5583
5584         rank = mono_method_signature (cmethod)->param_count - (is_set? 1: 0);
5585
5586         if (rank == 1)
5587                 return mini_emit_ldelema_1_ins (cfg, eclass, sp [0], sp [1], TRUE);
5588
5589         /* emit_ldelema_2 depends on OP_LMUL */
5590         if (!cfg->backend->emulate_mul_div && rank == 2 && (cfg->opt & MONO_OPT_INTRINS) && !mini_is_gsharedvt_variable_klass (eclass)) {
5591                 return mini_emit_ldelema_2_ins (cfg, eclass, sp [0], sp [1], sp [2]);
5592         }
5593
5594         if (mini_is_gsharedvt_variable_klass (eclass))
5595                 element_size = 0;
5596         else
5597                 element_size = mono_class_array_element_size (eclass);
5598         addr_method = mono_marshal_get_array_address (rank, element_size);
5599         addr = mono_emit_method_call (cfg, addr_method, sp, NULL);
5600
5601         return addr;
5602 }
5603
5604 static MonoBreakPolicy
5605 always_insert_breakpoint (MonoMethod *method)
5606 {
5607         return MONO_BREAK_POLICY_ALWAYS;
5608 }
5609
5610 static MonoBreakPolicyFunc break_policy_func = always_insert_breakpoint;
5611
5612 /**
5613  * mono_set_break_policy:
5614  * policy_callback: the new callback function
5615  *
5616  * Allow embedders to decide wherther to actually obey breakpoint instructions
5617  * (both break IL instructions and Debugger.Break () method calls), for example
5618  * to not allow an app to be aborted by a perfectly valid IL opcode when executing
5619  * untrusted or semi-trusted code.
5620  *
5621  * @policy_callback will be called every time a break point instruction needs to
5622  * be inserted with the method argument being the method that calls Debugger.Break()
5623  * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
5624  * if it wants the breakpoint to not be effective in the given method.
5625  * #MONO_BREAK_POLICY_ALWAYS is the default.
5626  */
5627 void
5628 mono_set_break_policy (MonoBreakPolicyFunc policy_callback)
5629 {
5630         if (policy_callback)
5631                 break_policy_func = policy_callback;
5632         else
5633                 break_policy_func = always_insert_breakpoint;
5634 }
5635
5636 static gboolean
5637 should_insert_brekpoint (MonoMethod *method) {
5638         switch (break_policy_func (method)) {
5639         case MONO_BREAK_POLICY_ALWAYS:
5640                 return TRUE;
5641         case MONO_BREAK_POLICY_NEVER:
5642                 return FALSE;
5643         case MONO_BREAK_POLICY_ON_DBG:
5644                 g_warning ("mdb no longer supported");
5645                 return FALSE;
5646         default:
5647                 g_warning ("Incorrect value returned from break policy callback");
5648                 return FALSE;
5649         }
5650 }
5651
5652 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
5653 static MonoInst*
5654 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5655 {
5656         MonoInst *addr, *store, *load;
5657         MonoClass *eklass = mono_class_from_mono_type (fsig->params [2]);
5658
5659         /* the bounds check is already done by the callers */
5660         addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5661         if (is_set) {
5662                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, args [2]->dreg, 0);
5663                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, addr->dreg, 0, load->dreg);
5664                 if (mini_type_is_reference (fsig->params [2]))
5665                         emit_write_barrier (cfg, addr, load);
5666         } else {
5667                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, &eklass->byval_arg, addr->dreg, 0);
5668                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, &eklass->byval_arg, args [2]->dreg, 0, load->dreg);
5669         }
5670         return store;
5671 }
5672
5673
5674 static gboolean
5675 generic_class_is_reference_type (MonoCompile *cfg, MonoClass *klass)
5676 {
5677         return mini_type_is_reference (&klass->byval_arg);
5678 }
5679
5680 static MonoInst*
5681 emit_array_store (MonoCompile *cfg, MonoClass *klass, MonoInst **sp, gboolean safety_checks)
5682 {
5683         if (safety_checks && generic_class_is_reference_type (cfg, klass) &&
5684                 !(sp [2]->opcode == OP_PCONST && sp [2]->inst_p0 == NULL)) {
5685                 MonoClass *obj_array = mono_array_class_get_cached (mono_defaults.object_class, 1);
5686                 MonoMethod *helper = mono_marshal_get_virtual_stelemref (obj_array);
5687                 MonoInst *iargs [3];
5688
5689                 if (!helper->slot)
5690                         mono_class_setup_vtable (obj_array);
5691                 g_assert (helper->slot);
5692
5693                 if (sp [0]->type != STACK_OBJ)
5694                         return NULL;
5695                 if (sp [2]->type != STACK_OBJ)
5696                         return NULL;
5697
5698                 iargs [2] = sp [2];
5699                 iargs [1] = sp [1];
5700                 iargs [0] = sp [0];
5701
5702                 return mono_emit_method_call (cfg, helper, iargs, sp [0]);
5703         } else {
5704                 MonoInst *ins;
5705
5706                 if (mini_is_gsharedvt_variable_klass (klass)) {
5707                         MonoInst *addr;
5708
5709                         // FIXME-VT: OP_ICONST optimization
5710                         addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
5711                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5712                         ins->opcode = OP_STOREV_MEMBASE;
5713                 } else if (sp [1]->opcode == OP_ICONST) {
5714                         int array_reg = sp [0]->dreg;
5715                         int index_reg = sp [1]->dreg;
5716                         int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
5717
5718                         if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
5719                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
5720
5721                         if (safety_checks)
5722                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
5723                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset, sp [2]->dreg);
5724                 } else {
5725                         MonoInst *addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], safety_checks);
5726                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0, sp [2]->dreg);
5727                         if (generic_class_is_reference_type (cfg, klass))
5728                                 emit_write_barrier (cfg, addr, sp [2]);
5729                 }
5730                 return ins;
5731         }
5732 }
5733
5734 static MonoInst*
5735 emit_array_unsafe_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
5736 {
5737         MonoClass *eklass;
5738
5739         if (is_set)
5740                 eklass = mono_class_from_mono_type (fsig->params [2]);
5741         else
5742                 eklass = mono_class_from_mono_type (fsig->ret);
5743
5744         if (is_set) {
5745                 return emit_array_store (cfg, eklass, args, FALSE);
5746         } else {
5747                 MonoInst *ins, *addr = mini_emit_ldelema_1_ins (cfg, eklass, args [0], args [1], FALSE);
5748                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &eklass->byval_arg, addr->dreg, 0);
5749                 return ins;
5750         }
5751 }
5752
5753 static gboolean
5754 is_unsafe_mov_compatible (MonoCompile *cfg, MonoClass *param_klass, MonoClass *return_klass)
5755 {
5756         uint32_t align;
5757         int param_size, return_size;
5758
5759         param_klass = mono_class_from_mono_type (mini_get_underlying_type (&param_klass->byval_arg));
5760         return_klass = mono_class_from_mono_type (mini_get_underlying_type (&return_klass->byval_arg));
5761
5762         if (cfg->verbose_level > 3)
5763                 printf ("[UNSAFE-MOV-INTRISIC] %s <- %s\n", return_klass->name, param_klass->name);
5764
5765         //Don't allow mixing reference types with value types
5766         if (param_klass->valuetype != return_klass->valuetype) {
5767                 if (cfg->verbose_level > 3)
5768                         printf ("[UNSAFE-MOV-INTRISIC]\tone of the args is a valuetype and the other is not\n");
5769                 return FALSE;
5770         }
5771
5772         if (!param_klass->valuetype) {
5773                 if (cfg->verbose_level > 3)
5774                         printf ("[UNSAFE-MOV-INTRISIC]\targs are reference types\n");
5775                 return TRUE;
5776         }
5777
5778         //That are blitable
5779         if (param_klass->has_references || return_klass->has_references)
5780                 return FALSE;
5781
5782         /* Avoid mixing structs and primitive types/enums, they need to be handled differently in the JIT */
5783         if ((MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && !MONO_TYPE_ISSTRUCT (&return_klass->byval_arg)) ||
5784                 (!MONO_TYPE_ISSTRUCT (&param_klass->byval_arg) && MONO_TYPE_ISSTRUCT (&return_klass->byval_arg))) {
5785                         if (cfg->verbose_level > 3)
5786                                 printf ("[UNSAFE-MOV-INTRISIC]\tmixing structs and scalars\n");
5787                 return FALSE;
5788         }
5789
5790         if (param_klass->byval_arg.type == MONO_TYPE_R4 || param_klass->byval_arg.type == MONO_TYPE_R8 ||
5791                 return_klass->byval_arg.type == MONO_TYPE_R4 || return_klass->byval_arg.type == MONO_TYPE_R8) {
5792                 if (cfg->verbose_level > 3)
5793                         printf ("[UNSAFE-MOV-INTRISIC]\tfloat or double are not supported\n");
5794                 return FALSE;
5795         }
5796
5797         param_size = mono_class_value_size (param_klass, &align);
5798         return_size = mono_class_value_size (return_klass, &align);
5799
5800         //We can do it if sizes match
5801         if (param_size == return_size) {
5802                 if (cfg->verbose_level > 3)
5803                         printf ("[UNSAFE-MOV-INTRISIC]\tsame size\n");
5804                 return TRUE;
5805         }
5806
5807         //No simple way to handle struct if sizes don't match
5808         if (MONO_TYPE_ISSTRUCT (&param_klass->byval_arg)) {
5809                 if (cfg->verbose_level > 3)
5810                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch and type is a struct\n");
5811                 return FALSE;
5812         }
5813
5814         /*
5815          * Same reg size category.
5816          * A quick note on why we don't require widening here.
5817          * The intrinsic is "R Array.UnsafeMov<S,R> (S s)".
5818          *
5819          * Since the source value comes from a function argument, the JIT will already have
5820          * the value in a VREG and performed any widening needed before (say, when loading from a field).
5821          */
5822         if (param_size <= 4 && return_size <= 4) {
5823                 if (cfg->verbose_level > 3)
5824                         printf ("[UNSAFE-MOV-INTRISIC]\tsize mismatch but both are of the same reg class\n");
5825                 return TRUE;
5826         }
5827
5828         return FALSE;
5829 }
5830
5831 static MonoInst*
5832 emit_array_unsafe_mov (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args)
5833 {
5834         MonoClass *param_klass = mono_class_from_mono_type (fsig->params [0]);
5835         MonoClass *return_klass = mono_class_from_mono_type (fsig->ret);
5836
5837         if (mini_is_gsharedvt_variable_type (fsig->ret))
5838                 return NULL;
5839
5840         //Valuetypes that are semantically equivalent or numbers than can be widened to
5841         if (is_unsafe_mov_compatible (cfg, param_klass, return_klass))
5842                 return args [0];
5843
5844         //Arrays of valuetypes that are semantically equivalent
5845         if (param_klass->rank == 1 && return_klass->rank == 1 && is_unsafe_mov_compatible (cfg, param_klass->element_class, return_klass->element_class))
5846                 return args [0];
5847
5848         return NULL;
5849 }
5850
5851 static MonoInst*
5852 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5853 {
5854 #ifdef MONO_ARCH_SIMD_INTRINSICS
5855         MonoInst *ins = NULL;
5856
5857         if (cfg->opt & MONO_OPT_SIMD) {
5858                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
5859                 if (ins)
5860                         return ins;
5861         }
5862 #endif
5863
5864         return mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
5865 }
5866
5867 static MonoInst*
5868 emit_memory_barrier (MonoCompile *cfg, int kind)
5869 {
5870         MonoInst *ins = NULL;
5871         MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
5872         MONO_ADD_INS (cfg->cbb, ins);
5873         ins->backend.memory_barrier_kind = kind;
5874
5875         return ins;
5876 }
5877
5878 static MonoInst*
5879 llvm_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5880 {
5881         MonoInst *ins = NULL;
5882         int opcode = 0;
5883
5884         /* The LLVM backend supports these intrinsics */
5885         if (cmethod->klass == mono_defaults.math_class) {
5886                 if (strcmp (cmethod->name, "Sin") == 0) {
5887                         opcode = OP_SIN;
5888                 } else if (strcmp (cmethod->name, "Cos") == 0) {
5889                         opcode = OP_COS;
5890                 } else if (strcmp (cmethod->name, "Sqrt") == 0) {
5891                         opcode = OP_SQRT;
5892                 } else if (strcmp (cmethod->name, "Abs") == 0 && fsig->params [0]->type == MONO_TYPE_R8) {
5893                         opcode = OP_ABS;
5894                 }
5895
5896                 if (opcode && fsig->param_count == 1) {
5897                         MONO_INST_NEW (cfg, ins, opcode);
5898                         ins->type = STACK_R8;
5899                         ins->dreg = mono_alloc_freg (cfg);
5900                         ins->sreg1 = args [0]->dreg;
5901                         MONO_ADD_INS (cfg->cbb, ins);
5902                 }
5903
5904                 opcode = 0;
5905                 if (cfg->opt & MONO_OPT_CMOV) {
5906                         if (strcmp (cmethod->name, "Min") == 0) {
5907                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5908                                         opcode = OP_IMIN;
5909                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5910                                         opcode = OP_IMIN_UN;
5911                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5912                                         opcode = OP_LMIN;
5913                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5914                                         opcode = OP_LMIN_UN;
5915                         } else if (strcmp (cmethod->name, "Max") == 0) {
5916                                 if (fsig->params [0]->type == MONO_TYPE_I4)
5917                                         opcode = OP_IMAX;
5918                                 if (fsig->params [0]->type == MONO_TYPE_U4)
5919                                         opcode = OP_IMAX_UN;
5920                                 else if (fsig->params [0]->type == MONO_TYPE_I8)
5921                                         opcode = OP_LMAX;
5922                                 else if (fsig->params [0]->type == MONO_TYPE_U8)
5923                                         opcode = OP_LMAX_UN;
5924                         }
5925                 }
5926
5927                 if (opcode && fsig->param_count == 2) {
5928                         MONO_INST_NEW (cfg, ins, opcode);
5929                         ins->type = fsig->params [0]->type == MONO_TYPE_I4 ? STACK_I4 : STACK_I8;
5930                         ins->dreg = mono_alloc_ireg (cfg);
5931                         ins->sreg1 = args [0]->dreg;
5932                         ins->sreg2 = args [1]->dreg;
5933                         MONO_ADD_INS (cfg->cbb, ins);
5934                 }
5935         }
5936
5937         return ins;
5938 }
5939
5940 static MonoInst*
5941 mini_emit_inst_for_sharable_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5942 {
5943         if (cmethod->klass == mono_defaults.array_class) {
5944                 if (strcmp (cmethod->name, "UnsafeStore") == 0)
5945                         return emit_array_unsafe_access (cfg, fsig, args, TRUE);
5946                 else if (strcmp (cmethod->name, "UnsafeLoad") == 0)
5947                         return emit_array_unsafe_access (cfg, fsig, args, FALSE);
5948                 else if (strcmp (cmethod->name, "UnsafeMov") == 0)
5949                         return emit_array_unsafe_mov (cfg, fsig, args);
5950         }
5951
5952         return NULL;
5953 }
5954
5955 static MonoInst*
5956 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5957 {
5958         MonoInst *ins = NULL;
5959
5960          MonoClass *runtime_helpers_class = mono_class_get_runtime_helpers_class ();
5961
5962         if (cmethod->klass == mono_defaults.string_class) {
5963                 if (strcmp (cmethod->name, "get_Chars") == 0 && fsig->param_count + fsig->hasthis == 2) {
5964                         int dreg = alloc_ireg (cfg);
5965                         int index_reg = alloc_preg (cfg);
5966                         int add_reg = alloc_preg (cfg);
5967
5968 #if SIZEOF_REGISTER == 8
5969                         if (COMPILE_LLVM (cfg)) {
5970                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, args [1]->dreg);
5971                         } else {
5972                                 /* The array reg is 64 bits but the index reg is only 32 */
5973                                 MONO_EMIT_NEW_UNALU (cfg, OP_SEXT_I4, index_reg, args [1]->dreg);
5974                         }
5975 #else
5976                         index_reg = args [1]->dreg;
5977 #endif
5978                         MONO_EMIT_BOUNDS_CHECK (cfg, args [0]->dreg, MonoString, length, index_reg);
5979
5980 #if defined(TARGET_X86) || defined(TARGET_AMD64)
5981                         EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, MONO_STRUCT_OFFSET (MonoString, chars));
5982                         add_reg = ins->dreg;
5983                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5984                                                                    add_reg, 0);
5985 #else
5986                         int mult_reg = alloc_preg (cfg);
5987                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, mult_reg, index_reg, 1);
5988                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, add_reg, mult_reg, args [0]->dreg);
5989                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU2_MEMBASE, dreg,
5990                                                                    add_reg, MONO_STRUCT_OFFSET (MonoString, chars));
5991 #endif
5992                         type_from_op (cfg, ins, NULL, NULL);
5993                         return ins;
5994                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
5995                         int dreg = alloc_ireg (cfg);
5996                         /* Decompose later to allow more optimizations */
5997                         EMIT_NEW_UNALU (cfg, ins, OP_STRLEN, dreg, args [0]->dreg);
5998                         ins->type = STACK_I4;
5999                         ins->flags |= MONO_INST_FAULT;
6000                         cfg->cbb->has_array_access = TRUE;
6001                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
6002
6003                         return ins;
6004                 } else
6005                         return NULL;
6006         } else if (cmethod->klass == mono_defaults.object_class) {
6007                 if (strcmp (cmethod->name, "GetType") == 0 && fsig->param_count + fsig->hasthis == 1) {
6008                         int dreg = alloc_ireg_ref (cfg);
6009                         int vt_reg = alloc_preg (cfg);
6010                         MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6011                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, MONO_STRUCT_OFFSET (MonoVTable, type));
6012                         type_from_op (cfg, ins, NULL, NULL);
6013
6014                         return ins;
6015                 } else if (!cfg->backend->emulate_mul_div && strcmp (cmethod->name, "InternalGetHashCode") == 0 && fsig->param_count == 1 && !mono_gc_is_moving ()) {
6016                         int dreg = alloc_ireg (cfg);
6017                         int t1 = alloc_ireg (cfg);
6018
6019                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, t1, args [0]->dreg, 3);
6020                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_MUL_IMM, dreg, t1, 2654435761u);
6021                         ins->type = STACK_I4;
6022
6023                         return ins;
6024                 } else if (strcmp (cmethod->name, ".ctor") == 0 && fsig->param_count == 0) {
6025                         MONO_INST_NEW (cfg, ins, OP_NOP);
6026                         MONO_ADD_INS (cfg->cbb, ins);
6027                         return ins;
6028                 } else
6029                         return NULL;
6030         } else if (cmethod->klass == mono_defaults.array_class) {
6031                 if (strcmp (cmethod->name, "GetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6032                         return emit_array_generic_access (cfg, fsig, args, FALSE);
6033                 else if (strcmp (cmethod->name, "SetGenericValueImpl") == 0 && fsig->param_count + fsig->hasthis == 3 && !cfg->gsharedvt)
6034                         return emit_array_generic_access (cfg, fsig, args, TRUE);
6035
6036 #ifndef MONO_BIG_ARRAYS
6037                 /*
6038                  * This is an inline version of GetLength/GetLowerBound(0) used frequently in
6039                  * Array methods.
6040                  */
6041                 else if (((strcmp (cmethod->name, "GetLength") == 0 && fsig->param_count + fsig->hasthis == 2) ||
6042                          (strcmp (cmethod->name, "GetLowerBound") == 0 && fsig->param_count + fsig->hasthis == 2)) &&
6043                          args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
6044                         int dreg = alloc_ireg (cfg);
6045                         int bounds_reg = alloc_ireg_mp (cfg);
6046                         MonoBasicBlock *end_bb, *szarray_bb;
6047                         gboolean get_length = strcmp (cmethod->name, "GetLength") == 0;
6048
6049                         NEW_BBLOCK (cfg, end_bb);
6050                         NEW_BBLOCK (cfg, szarray_bb);
6051
6052                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOAD_MEMBASE, bounds_reg,
6053                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
6054                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, bounds_reg, 0);
6055                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, szarray_bb);
6056                         /* Non-szarray case */
6057                         if (get_length)
6058                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6059                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, length));
6060                         else
6061                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6062                                                                            bounds_reg, MONO_STRUCT_OFFSET (MonoArrayBounds, lower_bound));
6063                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
6064                         MONO_START_BB (cfg, szarray_bb);
6065                         /* Szarray case */
6066                         if (get_length)
6067                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6068                                                                            args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6069                         else
6070                                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6071                         MONO_START_BB (cfg, end_bb);
6072
6073                         EMIT_NEW_UNALU (cfg, ins, OP_MOVE, dreg, dreg);
6074                         ins->type = STACK_I4;
6075
6076                         return ins;
6077                 }
6078 #endif
6079
6080                 if (cmethod->name [0] != 'g')
6081                         return NULL;
6082
6083                 if (strcmp (cmethod->name, "get_Rank") == 0 && fsig->param_count + fsig->hasthis == 1) {
6084                         int dreg = alloc_ireg (cfg);
6085                         int vtable_reg = alloc_preg (cfg);
6086                         MONO_EMIT_NEW_LOAD_MEMBASE_OP_FAULT (cfg, OP_LOAD_MEMBASE, vtable_reg,
6087                                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoObject, vtable));
6088                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADU1_MEMBASE, dreg,
6089                                                                    vtable_reg, MONO_STRUCT_OFFSET (MonoVTable, rank));
6090                         type_from_op (cfg, ins, NULL, NULL);
6091
6092                         return ins;
6093                 } else if (strcmp (cmethod->name, "get_Length") == 0 && fsig->param_count + fsig->hasthis == 1) {
6094                         int dreg = alloc_ireg (cfg);
6095
6096                         EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, ins, OP_LOADI4_MEMBASE, dreg,
6097                                                                                  args [0]->dreg, MONO_STRUCT_OFFSET (MonoArray, max_length));
6098                         type_from_op (cfg, ins, NULL, NULL);
6099
6100                         return ins;
6101                 } else
6102                         return NULL;
6103         } else if (cmethod->klass == runtime_helpers_class) {
6104                 if (strcmp (cmethod->name, "get_OffsetToStringData") == 0 && fsig->param_count == 0) {
6105                         EMIT_NEW_ICONST (cfg, ins, MONO_STRUCT_OFFSET (MonoString, chars));
6106                         return ins;
6107                 } else
6108                         return NULL;
6109         } else if (cmethod->klass == mono_defaults.monitor_class) {
6110                 gboolean is_enter = FALSE;
6111                 gboolean is_v4 = FALSE;
6112
6113                 if (!strcmp (cmethod->name, "enter_with_atomic_var") && mono_method_signature (cmethod)->param_count == 2) {
6114                         is_enter = TRUE;
6115                         is_v4 = TRUE;
6116                 }
6117                 if (!strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1)
6118                         is_enter = TRUE;
6119
6120                 if (is_enter) {
6121                         /*
6122                          * To make async stack traces work, icalls which can block should have a wrapper.
6123                          * For Monitor.Enter, emit two calls: a fastpath which doesn't have a wrapper, and a slowpath, which does.
6124                          */
6125                         MonoBasicBlock *end_bb;
6126
6127                         NEW_BBLOCK (cfg, end_bb);
6128
6129                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4_fast : (gpointer)mono_monitor_enter_fast, args);
6130                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, ins->dreg, 0);
6131                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBNE_UN, end_bb);
6132                         ins = mono_emit_jit_icall (cfg, is_v4 ? (gpointer)mono_monitor_enter_v4 : (gpointer)mono_monitor_enter, args);
6133                         MONO_START_BB (cfg, end_bb);
6134                         return ins;
6135                 }
6136         } else if (cmethod->klass == mono_defaults.thread_class) {
6137                 if (strcmp (cmethod->name, "SpinWait_nop") == 0 && fsig->param_count == 0) {
6138                         MONO_INST_NEW (cfg, ins, OP_RELAXED_NOP);
6139                         MONO_ADD_INS (cfg->cbb, ins);
6140                         return ins;
6141                 } else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0) {
6142                         return emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6143                 } else if (!strcmp (cmethod->name, "VolatileRead") && fsig->param_count == 1) {
6144                         guint32 opcode = 0;
6145                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6146
6147                         if (fsig->params [0]->type == MONO_TYPE_I1)
6148                                 opcode = OP_LOADI1_MEMBASE;
6149                         else if (fsig->params [0]->type == MONO_TYPE_U1)
6150                                 opcode = OP_LOADU1_MEMBASE;
6151                         else if (fsig->params [0]->type == MONO_TYPE_I2)
6152                                 opcode = OP_LOADI2_MEMBASE;
6153                         else if (fsig->params [0]->type == MONO_TYPE_U2)
6154                                 opcode = OP_LOADU2_MEMBASE;
6155                         else if (fsig->params [0]->type == MONO_TYPE_I4)
6156                                 opcode = OP_LOADI4_MEMBASE;
6157                         else if (fsig->params [0]->type == MONO_TYPE_U4)
6158                                 opcode = OP_LOADU4_MEMBASE;
6159                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6160                                 opcode = OP_LOADI8_MEMBASE;
6161                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6162                                 opcode = OP_LOADR4_MEMBASE;
6163                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6164                                 opcode = OP_LOADR8_MEMBASE;
6165                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6166                                 opcode = OP_LOAD_MEMBASE;
6167
6168                         if (opcode) {
6169                                 MONO_INST_NEW (cfg, ins, opcode);
6170                                 ins->inst_basereg = args [0]->dreg;
6171                                 ins->inst_offset = 0;
6172                                 MONO_ADD_INS (cfg->cbb, ins);
6173
6174                                 switch (fsig->params [0]->type) {
6175                                 case MONO_TYPE_I1:
6176                                 case MONO_TYPE_U1:
6177                                 case MONO_TYPE_I2:
6178                                 case MONO_TYPE_U2:
6179                                 case MONO_TYPE_I4:
6180                                 case MONO_TYPE_U4:
6181                                         ins->dreg = mono_alloc_ireg (cfg);
6182                                         ins->type = STACK_I4;
6183                                         break;
6184                                 case MONO_TYPE_I8:
6185                                 case MONO_TYPE_U8:
6186                                         ins->dreg = mono_alloc_lreg (cfg);
6187                                         ins->type = STACK_I8;
6188                                         break;
6189                                 case MONO_TYPE_I:
6190                                 case MONO_TYPE_U:
6191                                         ins->dreg = mono_alloc_ireg (cfg);
6192 #if SIZEOF_REGISTER == 8
6193                                         ins->type = STACK_I8;
6194 #else
6195                                         ins->type = STACK_I4;
6196 #endif
6197                                         break;
6198                                 case MONO_TYPE_R4:
6199                                 case MONO_TYPE_R8:
6200                                         ins->dreg = mono_alloc_freg (cfg);
6201                                         ins->type = STACK_R8;
6202                                         break;
6203                                 default:
6204                                         g_assert (mini_type_is_reference (fsig->params [0]));
6205                                         ins->dreg = mono_alloc_ireg_ref (cfg);
6206                                         ins->type = STACK_OBJ;
6207                                         break;
6208                                 }
6209
6210                                 if (opcode == OP_LOADI8_MEMBASE)
6211                                         ins = mono_decompose_opcode (cfg, ins);
6212
6213                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6214
6215                                 return ins;
6216                         }
6217                 } else if (!strcmp (cmethod->name, "VolatileWrite") && fsig->param_count == 2) {
6218                         guint32 opcode = 0;
6219                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6220
6221                         if (fsig->params [0]->type == MONO_TYPE_I1 || fsig->params [0]->type == MONO_TYPE_U1)
6222                                 opcode = OP_STOREI1_MEMBASE_REG;
6223                         else if (fsig->params [0]->type == MONO_TYPE_I2 || fsig->params [0]->type == MONO_TYPE_U2)
6224                                 opcode = OP_STOREI2_MEMBASE_REG;
6225                         else if (fsig->params [0]->type == MONO_TYPE_I4 || fsig->params [0]->type == MONO_TYPE_U4)
6226                                 opcode = OP_STOREI4_MEMBASE_REG;
6227                         else if (fsig->params [0]->type == MONO_TYPE_I8 || fsig->params [0]->type == MONO_TYPE_U8)
6228                                 opcode = OP_STOREI8_MEMBASE_REG;
6229                         else if (fsig->params [0]->type == MONO_TYPE_R4)
6230                                 opcode = OP_STORER4_MEMBASE_REG;
6231                         else if (fsig->params [0]->type == MONO_TYPE_R8)
6232                                 opcode = OP_STORER8_MEMBASE_REG;
6233                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I || fsig->params [0]->type == MONO_TYPE_U)
6234                                 opcode = OP_STORE_MEMBASE_REG;
6235
6236                         if (opcode) {
6237                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6238
6239                                 MONO_INST_NEW (cfg, ins, opcode);
6240                                 ins->sreg1 = args [1]->dreg;
6241                                 ins->inst_destbasereg = args [0]->dreg;
6242                                 ins->inst_offset = 0;
6243                                 MONO_ADD_INS (cfg->cbb, ins);
6244
6245                                 if (opcode == OP_STOREI8_MEMBASE_REG)
6246                                         ins = mono_decompose_opcode (cfg, ins);
6247
6248                                 return ins;
6249                         }
6250                 }
6251         } else if (cmethod->klass->image == mono_defaults.corlib &&
6252                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6253                            (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
6254                 ins = NULL;
6255
6256 #if SIZEOF_REGISTER == 8
6257                 if (!cfg->llvm_only && strcmp (cmethod->name, "Read") == 0 && fsig->param_count == 1 && (fsig->params [0]->type == MONO_TYPE_I8)) {
6258                         if (!cfg->llvm_only && mono_arch_opcode_supported (OP_ATOMIC_LOAD_I8)) {
6259                                 MONO_INST_NEW (cfg, ins, OP_ATOMIC_LOAD_I8);
6260                                 ins->dreg = mono_alloc_preg (cfg);
6261                                 ins->sreg1 = args [0]->dreg;
6262                                 ins->type = STACK_I8;
6263                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_SEQ;
6264                                 MONO_ADD_INS (cfg->cbb, ins);
6265                         } else {
6266                                 MonoInst *load_ins;
6267
6268                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6269
6270                                 /* 64 bit reads are already atomic */
6271                                 MONO_INST_NEW (cfg, load_ins, OP_LOADI8_MEMBASE);
6272                                 load_ins->dreg = mono_alloc_preg (cfg);
6273                                 load_ins->inst_basereg = args [0]->dreg;
6274                                 load_ins->inst_offset = 0;
6275                                 load_ins->type = STACK_I8;
6276                                 MONO_ADD_INS (cfg->cbb, load_ins);
6277
6278                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6279
6280                                 ins = load_ins;
6281                         }
6282                 }
6283 #endif
6284
6285                 if (strcmp (cmethod->name, "Increment") == 0 && fsig->param_count == 1) {
6286                         MonoInst *ins_iconst;
6287                         guint32 opcode = 0;
6288
6289                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6290                                 opcode = OP_ATOMIC_ADD_I4;
6291                                 cfg->has_atomic_add_i4 = TRUE;
6292                         }
6293 #if SIZEOF_REGISTER == 8
6294                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6295                                 opcode = OP_ATOMIC_ADD_I8;
6296 #endif
6297                         if (opcode) {
6298                                 if (!mono_arch_opcode_supported (opcode))
6299                                         return NULL;
6300                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6301                                 ins_iconst->inst_c0 = 1;
6302                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6303                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6304
6305                                 MONO_INST_NEW (cfg, ins, opcode);
6306                                 ins->dreg = mono_alloc_ireg (cfg);
6307                                 ins->inst_basereg = args [0]->dreg;
6308                                 ins->inst_offset = 0;
6309                                 ins->sreg2 = ins_iconst->dreg;
6310                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6311                                 MONO_ADD_INS (cfg->cbb, ins);
6312                         }
6313                 } else if (strcmp (cmethod->name, "Decrement") == 0 && fsig->param_count == 1) {
6314                         MonoInst *ins_iconst;
6315                         guint32 opcode = 0;
6316
6317                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6318                                 opcode = OP_ATOMIC_ADD_I4;
6319                                 cfg->has_atomic_add_i4 = TRUE;
6320                         }
6321 #if SIZEOF_REGISTER == 8
6322                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6323                                 opcode = OP_ATOMIC_ADD_I8;
6324 #endif
6325                         if (opcode) {
6326                                 if (!mono_arch_opcode_supported (opcode))
6327                                         return NULL;
6328                                 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
6329                                 ins_iconst->inst_c0 = -1;
6330                                 ins_iconst->dreg = mono_alloc_ireg (cfg);
6331                                 MONO_ADD_INS (cfg->cbb, ins_iconst);
6332
6333                                 MONO_INST_NEW (cfg, ins, opcode);
6334                                 ins->dreg = mono_alloc_ireg (cfg);
6335                                 ins->inst_basereg = args [0]->dreg;
6336                                 ins->inst_offset = 0;
6337                                 ins->sreg2 = ins_iconst->dreg;
6338                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6339                                 MONO_ADD_INS (cfg->cbb, ins);
6340                         }
6341                 } else if (strcmp (cmethod->name, "Add") == 0 && fsig->param_count == 2) {
6342                         guint32 opcode = 0;
6343
6344                         if (fsig->params [0]->type == MONO_TYPE_I4) {
6345                                 opcode = OP_ATOMIC_ADD_I4;
6346                                 cfg->has_atomic_add_i4 = TRUE;
6347                         }
6348 #if SIZEOF_REGISTER == 8
6349                         else if (fsig->params [0]->type == MONO_TYPE_I8)
6350                                 opcode = OP_ATOMIC_ADD_I8;
6351 #endif
6352                         if (opcode) {
6353                                 if (!mono_arch_opcode_supported (opcode))
6354                                         return NULL;
6355                                 MONO_INST_NEW (cfg, ins, opcode);
6356                                 ins->dreg = mono_alloc_ireg (cfg);
6357                                 ins->inst_basereg = args [0]->dreg;
6358                                 ins->inst_offset = 0;
6359                                 ins->sreg2 = args [1]->dreg;
6360                                 ins->type = (opcode == OP_ATOMIC_ADD_I4) ? STACK_I4 : STACK_I8;
6361                                 MONO_ADD_INS (cfg->cbb, ins);
6362                         }
6363                 }
6364                 else if (strcmp (cmethod->name, "Exchange") == 0 && fsig->param_count == 2) {
6365                         MonoInst *f2i = NULL, *i2f;
6366                         guint32 opcode, f2i_opcode, i2f_opcode;
6367                         gboolean is_ref = mini_type_is_reference (fsig->params [0]);
6368                         gboolean is_float = fsig->params [0]->type == MONO_TYPE_R4 || fsig->params [0]->type == MONO_TYPE_R8;
6369
6370                         if (fsig->params [0]->type == MONO_TYPE_I4 ||
6371                             fsig->params [0]->type == MONO_TYPE_R4) {
6372                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6373                                 f2i_opcode = OP_MOVE_F_TO_I4;
6374                                 i2f_opcode = OP_MOVE_I4_TO_F;
6375                                 cfg->has_atomic_exchange_i4 = TRUE;
6376                         }
6377 #if SIZEOF_REGISTER == 8
6378                         else if (is_ref ||
6379                                  fsig->params [0]->type == MONO_TYPE_I8 ||
6380                                  fsig->params [0]->type == MONO_TYPE_R8 ||
6381                                  fsig->params [0]->type == MONO_TYPE_I) {
6382                                 opcode = OP_ATOMIC_EXCHANGE_I8;
6383                                 f2i_opcode = OP_MOVE_F_TO_I8;
6384                                 i2f_opcode = OP_MOVE_I8_TO_F;
6385                         }
6386 #else
6387                         else if (is_ref || fsig->params [0]->type == MONO_TYPE_I) {
6388                                 opcode = OP_ATOMIC_EXCHANGE_I4;
6389                                 cfg->has_atomic_exchange_i4 = TRUE;
6390                         }
6391 #endif
6392                         else
6393                                 return NULL;
6394
6395                         if (!mono_arch_opcode_supported (opcode))
6396                                 return NULL;
6397
6398                         if (is_float) {
6399                                 /* TODO: Decompose these opcodes instead of bailing here. */
6400                                 if (COMPILE_SOFT_FLOAT (cfg))
6401                                         return NULL;
6402
6403                                 MONO_INST_NEW (cfg, f2i, f2i_opcode);
6404                                 f2i->dreg = mono_alloc_ireg (cfg);
6405                                 f2i->sreg1 = args [1]->dreg;
6406                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6407                                         f2i->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6408                                 MONO_ADD_INS (cfg->cbb, f2i);
6409                         }
6410
6411                         MONO_INST_NEW (cfg, ins, opcode);
6412                         ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : mono_alloc_ireg (cfg);
6413                         ins->inst_basereg = args [0]->dreg;
6414                         ins->inst_offset = 0;
6415                         ins->sreg2 = is_float ? f2i->dreg : args [1]->dreg;
6416                         MONO_ADD_INS (cfg->cbb, ins);
6417
6418                         switch (fsig->params [0]->type) {
6419                         case MONO_TYPE_I4:
6420                                 ins->type = STACK_I4;
6421                                 break;
6422                         case MONO_TYPE_I8:
6423                                 ins->type = STACK_I8;
6424                                 break;
6425                         case MONO_TYPE_I:
6426 #if SIZEOF_REGISTER == 8
6427                                 ins->type = STACK_I8;
6428 #else
6429                                 ins->type = STACK_I4;
6430 #endif
6431                                 break;
6432                         case MONO_TYPE_R4:
6433                         case MONO_TYPE_R8:
6434                                 ins->type = STACK_R8;
6435                                 break;
6436                         default:
6437                                 g_assert (mini_type_is_reference (fsig->params [0]));
6438                                 ins->type = STACK_OBJ;
6439                                 break;
6440                         }
6441
6442                         if (is_float) {
6443                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6444                                 i2f->dreg = mono_alloc_freg (cfg);
6445                                 i2f->sreg1 = ins->dreg;
6446                                 i2f->type = STACK_R8;
6447                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6448                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6449                                 MONO_ADD_INS (cfg->cbb, i2f);
6450
6451                                 ins = i2f;
6452                         }
6453
6454                         if (cfg->gen_write_barriers && is_ref)
6455                                 emit_write_barrier (cfg, args [0], args [1]);
6456                 }
6457                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 3) {
6458                         MonoInst *f2i_new = NULL, *f2i_cmp = NULL, *i2f;
6459                         guint32 opcode, f2i_opcode, i2f_opcode;
6460                         gboolean is_ref = mini_type_is_reference (fsig->params [1]);
6461                         gboolean is_float = fsig->params [1]->type == MONO_TYPE_R4 || fsig->params [1]->type == MONO_TYPE_R8;
6462
6463                         if (fsig->params [1]->type == MONO_TYPE_I4 ||
6464                             fsig->params [1]->type == MONO_TYPE_R4) {
6465                                 opcode = OP_ATOMIC_CAS_I4;
6466                                 f2i_opcode = OP_MOVE_F_TO_I4;
6467                                 i2f_opcode = OP_MOVE_I4_TO_F;
6468                                 cfg->has_atomic_cas_i4 = TRUE;
6469                         }
6470 #if SIZEOF_REGISTER == 8
6471                         else if (is_ref ||
6472                                  fsig->params [1]->type == MONO_TYPE_I8 ||
6473                                  fsig->params [1]->type == MONO_TYPE_R8 ||
6474                                  fsig->params [1]->type == MONO_TYPE_I) {
6475                                 opcode = OP_ATOMIC_CAS_I8;
6476                                 f2i_opcode = OP_MOVE_F_TO_I8;
6477                                 i2f_opcode = OP_MOVE_I8_TO_F;
6478                         }
6479 #else
6480                         else if (is_ref || fsig->params [1]->type == MONO_TYPE_I) {
6481                                 opcode = OP_ATOMIC_CAS_I4;
6482                                 cfg->has_atomic_cas_i4 = TRUE;
6483                         }
6484 #endif
6485                         else
6486                                 return NULL;
6487
6488                         if (!mono_arch_opcode_supported (opcode))
6489                                 return NULL;
6490
6491                         if (is_float) {
6492                                 /* TODO: Decompose these opcodes instead of bailing here. */
6493                                 if (COMPILE_SOFT_FLOAT (cfg))
6494                                         return NULL;
6495
6496                                 MONO_INST_NEW (cfg, f2i_new, f2i_opcode);
6497                                 f2i_new->dreg = mono_alloc_ireg (cfg);
6498                                 f2i_new->sreg1 = args [1]->dreg;
6499                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6500                                         f2i_new->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6501                                 MONO_ADD_INS (cfg->cbb, f2i_new);
6502
6503                                 MONO_INST_NEW (cfg, f2i_cmp, f2i_opcode);
6504                                 f2i_cmp->dreg = mono_alloc_ireg (cfg);
6505                                 f2i_cmp->sreg1 = args [2]->dreg;
6506                                 if (f2i_opcode == OP_MOVE_F_TO_I4)
6507                                         f2i_cmp->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6508                                 MONO_ADD_INS (cfg->cbb, f2i_cmp);
6509                         }
6510
6511                         MONO_INST_NEW (cfg, ins, opcode);
6512                         ins->dreg = is_ref ? alloc_ireg_ref (cfg) : alloc_ireg (cfg);
6513                         ins->sreg1 = args [0]->dreg;
6514                         ins->sreg2 = is_float ? f2i_new->dreg : args [1]->dreg;
6515                         ins->sreg3 = is_float ? f2i_cmp->dreg : args [2]->dreg;
6516                         MONO_ADD_INS (cfg->cbb, ins);
6517
6518                         switch (fsig->params [1]->type) {
6519                         case MONO_TYPE_I4:
6520                                 ins->type = STACK_I4;
6521                                 break;
6522                         case MONO_TYPE_I8:
6523                                 ins->type = STACK_I8;
6524                                 break;
6525                         case MONO_TYPE_I:
6526 #if SIZEOF_REGISTER == 8
6527                                 ins->type = STACK_I8;
6528 #else
6529                                 ins->type = STACK_I4;
6530 #endif
6531                                 break;
6532                         case MONO_TYPE_R4:
6533                                 ins->type = cfg->r4_stack_type;
6534                                 break;
6535                         case MONO_TYPE_R8:
6536                                 ins->type = STACK_R8;
6537                                 break;
6538                         default:
6539                                 g_assert (mini_type_is_reference (fsig->params [1]));
6540                                 ins->type = STACK_OBJ;
6541                                 break;
6542                         }
6543
6544                         if (is_float) {
6545                                 MONO_INST_NEW (cfg, i2f, i2f_opcode);
6546                                 i2f->dreg = mono_alloc_freg (cfg);
6547                                 i2f->sreg1 = ins->dreg;
6548                                 i2f->type = STACK_R8;
6549                                 if (i2f_opcode == OP_MOVE_I4_TO_F)
6550                                         i2f->backend.spill_var = mini_get_int_to_float_spill_area (cfg);
6551                                 MONO_ADD_INS (cfg->cbb, i2f);
6552
6553                                 ins = i2f;
6554                         }
6555
6556                         if (cfg->gen_write_barriers && is_ref)
6557                                 emit_write_barrier (cfg, args [0], args [1]);
6558                 }
6559                 else if ((strcmp (cmethod->name, "CompareExchange") == 0) && fsig->param_count == 4 &&
6560                          fsig->params [1]->type == MONO_TYPE_I4) {
6561                         MonoInst *cmp, *ceq;
6562
6563                         if (!mono_arch_opcode_supported (OP_ATOMIC_CAS_I4))
6564                                 return NULL;
6565
6566                         /* int32 r = CAS (location, value, comparand); */
6567                         MONO_INST_NEW (cfg, ins, OP_ATOMIC_CAS_I4);
6568                         ins->dreg = alloc_ireg (cfg);
6569                         ins->sreg1 = args [0]->dreg;
6570                         ins->sreg2 = args [1]->dreg;
6571                         ins->sreg3 = args [2]->dreg;
6572                         ins->type = STACK_I4;
6573                         MONO_ADD_INS (cfg->cbb, ins);
6574
6575                         /* bool result = r == comparand; */
6576                         MONO_INST_NEW (cfg, cmp, OP_ICOMPARE);
6577                         cmp->sreg1 = ins->dreg;
6578                         cmp->sreg2 = args [2]->dreg;
6579                         cmp->type = STACK_I4;
6580                         MONO_ADD_INS (cfg->cbb, cmp);
6581
6582                         MONO_INST_NEW (cfg, ceq, OP_ICEQ);
6583                         ceq->dreg = alloc_ireg (cfg);
6584                         ceq->type = STACK_I4;
6585                         MONO_ADD_INS (cfg->cbb, ceq);
6586
6587                         /* *success = result; */
6588                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, args [3]->dreg, 0, ceq->dreg);
6589
6590                         cfg->has_atomic_cas_i4 = TRUE;
6591                 }
6592                 else if (strcmp (cmethod->name, "MemoryBarrier") == 0 && fsig->param_count == 0)
6593                         ins = emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
6594
6595                 if (ins)
6596                         return ins;
6597         } else if (cmethod->klass->image == mono_defaults.corlib &&
6598                            (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
6599                            (strcmp (cmethod->klass->name, "Volatile") == 0)) {
6600                 ins = NULL;
6601
6602                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Read") && fsig->param_count == 1) {
6603                         guint32 opcode = 0;
6604                         MonoType *t = fsig->params [0];
6605                         gboolean is_ref;
6606                         gboolean is_float = t->type == MONO_TYPE_R4 || t->type == MONO_TYPE_R8;
6607
6608                         g_assert (t->byref);
6609                         /* t is a byref type, so the reference check is more complicated */
6610                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6611                         if (t->type == MONO_TYPE_I1)
6612                                 opcode = OP_ATOMIC_LOAD_I1;
6613                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6614                                 opcode = OP_ATOMIC_LOAD_U1;
6615                         else if (t->type == MONO_TYPE_I2)
6616                                 opcode = OP_ATOMIC_LOAD_I2;
6617                         else if (t->type == MONO_TYPE_U2)
6618                                 opcode = OP_ATOMIC_LOAD_U2;
6619                         else if (t->type == MONO_TYPE_I4)
6620                                 opcode = OP_ATOMIC_LOAD_I4;
6621                         else if (t->type == MONO_TYPE_U4)
6622                                 opcode = OP_ATOMIC_LOAD_U4;
6623                         else if (t->type == MONO_TYPE_R4)
6624                                 opcode = OP_ATOMIC_LOAD_R4;
6625                         else if (t->type == MONO_TYPE_R8)
6626                                 opcode = OP_ATOMIC_LOAD_R8;
6627 #if SIZEOF_REGISTER == 8
6628                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6629                                 opcode = OP_ATOMIC_LOAD_I8;
6630                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6631                                 opcode = OP_ATOMIC_LOAD_U8;
6632 #else
6633                         else if (t->type == MONO_TYPE_I)
6634                                 opcode = OP_ATOMIC_LOAD_I4;
6635                         else if (is_ref || t->type == MONO_TYPE_U)
6636                                 opcode = OP_ATOMIC_LOAD_U4;
6637 #endif
6638
6639                         if (opcode) {
6640                                 if (!mono_arch_opcode_supported (opcode))
6641                                         return NULL;
6642
6643                                 MONO_INST_NEW (cfg, ins, opcode);
6644                                 ins->dreg = is_ref ? mono_alloc_ireg_ref (cfg) : (is_float ? mono_alloc_freg (cfg) : mono_alloc_ireg (cfg));
6645                                 ins->sreg1 = args [0]->dreg;
6646                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_ACQ;
6647                                 MONO_ADD_INS (cfg->cbb, ins);
6648
6649                                 switch (t->type) {
6650                                 case MONO_TYPE_BOOLEAN:
6651                                 case MONO_TYPE_I1:
6652                                 case MONO_TYPE_U1:
6653                                 case MONO_TYPE_I2:
6654                                 case MONO_TYPE_U2:
6655                                 case MONO_TYPE_I4:
6656                                 case MONO_TYPE_U4:
6657                                         ins->type = STACK_I4;
6658                                         break;
6659                                 case MONO_TYPE_I8:
6660                                 case MONO_TYPE_U8:
6661                                         ins->type = STACK_I8;
6662                                         break;
6663                                 case MONO_TYPE_I:
6664                                 case MONO_TYPE_U:
6665 #if SIZEOF_REGISTER == 8
6666                                         ins->type = STACK_I8;
6667 #else
6668                                         ins->type = STACK_I4;
6669 #endif
6670                                         break;
6671                                 case MONO_TYPE_R4:
6672                                         ins->type = cfg->r4_stack_type;
6673                                         break;
6674                                 case MONO_TYPE_R8:
6675                                         ins->type = STACK_R8;
6676                                         break;
6677                                 default:
6678                                         g_assert (is_ref);
6679                                         ins->type = STACK_OBJ;
6680                                         break;
6681                                 }
6682                         }
6683                 }
6684
6685                 if (!cfg->llvm_only && !strcmp (cmethod->name, "Write") && fsig->param_count == 2) {
6686                         guint32 opcode = 0;
6687                         MonoType *t = fsig->params [0];
6688                         gboolean is_ref;
6689
6690                         g_assert (t->byref);
6691                         is_ref = mini_type_is_reference (&mono_class_from_mono_type (t)->byval_arg);
6692                         if (t->type == MONO_TYPE_I1)
6693                                 opcode = OP_ATOMIC_STORE_I1;
6694                         else if (t->type == MONO_TYPE_U1 || t->type == MONO_TYPE_BOOLEAN)
6695                                 opcode = OP_ATOMIC_STORE_U1;
6696                         else if (t->type == MONO_TYPE_I2)
6697                                 opcode = OP_ATOMIC_STORE_I2;
6698                         else if (t->type == MONO_TYPE_U2)
6699                                 opcode = OP_ATOMIC_STORE_U2;
6700                         else if (t->type == MONO_TYPE_I4)
6701                                 opcode = OP_ATOMIC_STORE_I4;
6702                         else if (t->type == MONO_TYPE_U4)
6703                                 opcode = OP_ATOMIC_STORE_U4;
6704                         else if (t->type == MONO_TYPE_R4)
6705                                 opcode = OP_ATOMIC_STORE_R4;
6706                         else if (t->type == MONO_TYPE_R8)
6707                                 opcode = OP_ATOMIC_STORE_R8;
6708 #if SIZEOF_REGISTER == 8
6709                         else if (t->type == MONO_TYPE_I8 || t->type == MONO_TYPE_I)
6710                                 opcode = OP_ATOMIC_STORE_I8;
6711                         else if (is_ref || t->type == MONO_TYPE_U8 || t->type == MONO_TYPE_U)
6712                                 opcode = OP_ATOMIC_STORE_U8;
6713 #else
6714                         else if (t->type == MONO_TYPE_I)
6715                                 opcode = OP_ATOMIC_STORE_I4;
6716                         else if (is_ref || t->type == MONO_TYPE_U)
6717                                 opcode = OP_ATOMIC_STORE_U4;
6718 #endif
6719
6720                         if (opcode) {
6721                                 if (!mono_arch_opcode_supported (opcode))
6722                                         return NULL;
6723
6724                                 MONO_INST_NEW (cfg, ins, opcode);
6725                                 ins->dreg = args [0]->dreg;
6726                                 ins->sreg1 = args [1]->dreg;
6727                                 ins->backend.memory_barrier_kind = MONO_MEMORY_BARRIER_REL;
6728                                 MONO_ADD_INS (cfg->cbb, ins);
6729
6730                                 if (cfg->gen_write_barriers && is_ref)
6731                                         emit_write_barrier (cfg, args [0], args [1]);
6732                         }
6733                 }
6734
6735                 if (ins)
6736                         return ins;
6737         } else if (cmethod->klass->image == mono_defaults.corlib &&
6738                            (strcmp (cmethod->klass->name_space, "System.Diagnostics") == 0) &&
6739                            (strcmp (cmethod->klass->name, "Debugger") == 0)) {
6740                 if (!strcmp (cmethod->name, "Break") && fsig->param_count == 0) {
6741                         if (should_insert_brekpoint (cfg->method)) {
6742                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
6743                         } else {
6744                                 MONO_INST_NEW (cfg, ins, OP_NOP);
6745                                 MONO_ADD_INS (cfg->cbb, ins);
6746                         }
6747                         return ins;
6748                 }
6749         } else if (cmethod->klass->image == mono_defaults.corlib &&
6750                    (strcmp (cmethod->klass->name_space, "System") == 0) &&
6751                    (strcmp (cmethod->klass->name, "Environment") == 0)) {
6752                 if (!strcmp (cmethod->name, "get_IsRunningOnWindows") && fsig->param_count == 0) {
6753 #ifdef TARGET_WIN32
6754                         EMIT_NEW_ICONST (cfg, ins, 1);
6755 #else
6756                         EMIT_NEW_ICONST (cfg, ins, 0);
6757 #endif
6758                 }
6759         } else if (cmethod->klass->image == mono_defaults.corlib &&
6760                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6761                            (strcmp (cmethod->klass->name, "Assembly") == 0)) {
6762                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetExecutingAssembly")) {
6763                         /* No stack walks are currently available, so implement this as an intrinsic */
6764                         MonoInst *assembly_ins;
6765
6766                         EMIT_NEW_AOTCONST (cfg, assembly_ins, MONO_PATCH_INFO_IMAGE, cfg->method->klass->image);
6767                         ins = mono_emit_jit_icall (cfg, mono_get_assembly_object, &assembly_ins);
6768                         return ins;
6769                 }
6770         } else if (cmethod->klass->image == mono_defaults.corlib &&
6771                            (strcmp (cmethod->klass->name_space, "System.Reflection") == 0) &&
6772                            (strcmp (cmethod->klass->name, "MethodBase") == 0)) {
6773                 if (cfg->llvm_only && !strcmp (cmethod->name, "GetCurrentMethod")) {
6774                         /* No stack walks are currently available, so implement this as an intrinsic */
6775                         MonoInst *method_ins;
6776                         MonoMethod *declaring = cfg->method;
6777
6778                         /* This returns the declaring generic method */
6779                         if (declaring->is_inflated)
6780                                 declaring = ((MonoMethodInflated*)cfg->method)->declaring;
6781                         EMIT_NEW_AOTCONST (cfg, method_ins, MONO_PATCH_INFO_METHODCONST, declaring);
6782                         ins = mono_emit_jit_icall (cfg, mono_get_method_object, &method_ins);
6783                         cfg->no_inline = TRUE;
6784                         if (cfg->method != cfg->current_method)
6785                                 inline_failure (cfg, "MethodBase:GetCurrentMethod ()");
6786                         return ins;
6787                 }
6788         } else if (cmethod->klass == mono_defaults.math_class) {
6789                 /*
6790                  * There is general branchless code for Min/Max, but it does not work for
6791                  * all inputs:
6792                  * http://everything2.com/?node_id=1051618
6793                  */
6794         } else if (((!strcmp (cmethod->klass->image->assembly->aname.name, "MonoMac") ||
6795                     !strcmp (cmethod->klass->image->assembly->aname.name, "monotouch")) &&
6796                                 !strcmp (cmethod->klass->name_space, "XamCore.ObjCRuntime") &&
6797                                 !strcmp (cmethod->klass->name, "Selector")) ||
6798                            (!strcmp (cmethod->klass->image->assembly->aname.name, "Xamarin.iOS") &&
6799                                 !strcmp (cmethod->klass->name_space, "ObjCRuntime") &&
6800                                 !strcmp (cmethod->klass->name, "Selector"))
6801                            ) {
6802                 if (cfg->backend->have_objc_get_selector &&
6803                         !strcmp (cmethod->name, "GetHandle") && fsig->param_count == 1 &&
6804                     (args [0]->opcode == OP_GOT_ENTRY || args [0]->opcode == OP_AOTCONST) &&
6805                     cfg->compile_aot && !cfg->llvm_only) {
6806                         MonoInst *pi;
6807                         MonoJumpInfoToken *ji;
6808                         MonoString *s;
6809
6810                         // FIXME: llvmonly
6811
6812                         cfg->exception_message = g_strdup ("GetHandle");
6813                         cfg->disable_llvm = TRUE;
6814
6815                         if (args [0]->opcode == OP_GOT_ENTRY) {
6816                                 pi = (MonoInst *)args [0]->inst_p1;
6817                                 g_assert (pi->opcode == OP_PATCH_INFO);
6818                                 g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
6819                                 ji = (MonoJumpInfoToken *)pi->inst_p0;
6820                         } else {
6821                                 g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
6822                                 ji = (MonoJumpInfoToken *)args [0]->inst_p0;
6823                         }
6824
6825                         NULLIFY_INS (args [0]);
6826
6827                         // FIXME: Ugly
6828                         s = mono_ldstr (cfg->domain, ji->image, mono_metadata_token_index (ji->token));
6829                         MONO_INST_NEW (cfg, ins, OP_OBJC_GET_SELECTOR);
6830                         ins->dreg = mono_alloc_ireg (cfg);
6831                         // FIXME: Leaks
6832                         ins->inst_p0 = mono_string_to_utf8 (s);
6833                         MONO_ADD_INS (cfg->cbb, ins);
6834                         return ins;
6835                 }
6836         }
6837
6838 #ifdef MONO_ARCH_SIMD_INTRINSICS
6839         if (cfg->opt & MONO_OPT_SIMD) {
6840                 ins = mono_emit_simd_intrinsics (cfg, cmethod, fsig, args);
6841                 if (ins)
6842                         return ins;
6843         }
6844 #endif
6845
6846         ins = mono_emit_native_types_intrinsics (cfg, cmethod, fsig, args);
6847         if (ins)
6848                 return ins;
6849
6850         if (COMPILE_LLVM (cfg)) {
6851                 ins = llvm_emit_inst_for_method (cfg, cmethod, fsig, args);
6852                 if (ins)
6853                         return ins;
6854         }
6855
6856         return mono_arch_emit_inst_for_method (cfg, cmethod, fsig, args);
6857 }
6858
6859 /*
6860  * This entry point could be used later for arbitrary method
6861  * redirection.
6862  */
6863 inline static MonoInst*
6864 mini_redirect_call (MonoCompile *cfg, MonoMethod *method,
6865                                         MonoMethodSignature *signature, MonoInst **args, MonoInst *this_ins)
6866 {
6867         if (method->klass == mono_defaults.string_class) {
6868                 /* managed string allocation support */
6869                 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
6870                         MonoInst *iargs [2];
6871                         MonoVTable *vtable = mono_class_vtable (cfg->domain, method->klass);
6872                         MonoMethod *managed_alloc = NULL;
6873
6874                         g_assert (vtable); /*Should not fail since it System.String*/
6875 #ifndef MONO_CROSS_COMPILE
6876                         managed_alloc = mono_gc_get_managed_allocator (method->klass, FALSE, FALSE);
6877 #endif
6878                         if (!managed_alloc)
6879                                 return NULL;
6880                         EMIT_NEW_VTABLECONST (cfg, iargs [0], vtable);
6881                         iargs [1] = args [0];
6882                         return mono_emit_method_call (cfg, managed_alloc, iargs, this_ins);
6883                 }
6884         }
6885         return NULL;
6886 }
6887
6888 static void
6889 mono_save_args (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **sp)
6890 {
6891         MonoInst *store, *temp;
6892         int i;
6893
6894         for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
6895                 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
6896
6897                 /*
6898                  * FIXME: We should use *args++ = sp [0], but that would mean the arg
6899                  * would be different than the MonoInst's used to represent arguments, and
6900                  * the ldelema implementation can't deal with that.
6901                  * Solution: When ldelema is used on an inline argument, create a var for
6902                  * it, emit ldelema on that var, and emit the saving code below in
6903                  * inline_method () if needed.
6904                  */
6905                 temp = mono_compile_create_var (cfg, argtype, OP_LOCAL);
6906                 cfg->args [i] = temp;
6907                 /* This uses cfg->args [i] which is set by the preceeding line */
6908                 EMIT_NEW_ARGSTORE (cfg, store, i, *sp);
6909                 store->cil_code = sp [0]->cil_code;
6910                 sp++;
6911         }
6912 }
6913
6914 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
6915 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
6916
6917 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
6918 static gboolean
6919 check_inline_called_method_name_limit (MonoMethod *called_method)
6920 {
6921         int strncmp_result;
6922         static const char *limit = NULL;
6923
6924         if (limit == NULL) {
6925                 const char *limit_string = g_getenv ("MONO_INLINE_CALLED_METHOD_NAME_LIMIT");
6926
6927                 if (limit_string != NULL)
6928                         limit = limit_string;
6929                 else
6930                         limit = "";
6931         }
6932
6933         if (limit [0] != '\0') {
6934                 char *called_method_name = mono_method_full_name (called_method, TRUE);
6935
6936                 strncmp_result = strncmp (called_method_name, limit, strlen (limit));
6937                 g_free (called_method_name);
6938
6939                 //return (strncmp_result <= 0);
6940                 return (strncmp_result == 0);
6941         } else {
6942                 return TRUE;
6943         }
6944 }
6945 #endif
6946
6947 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
6948 static gboolean
6949 check_inline_caller_method_name_limit (MonoMethod *caller_method)
6950 {
6951         int strncmp_result;
6952         static const char *limit = NULL;
6953
6954         if (limit == NULL) {
6955                 const char *limit_string = g_getenv ("MONO_INLINE_CALLER_METHOD_NAME_LIMIT");
6956                 if (limit_string != NULL) {
6957                         limit = limit_string;
6958                 } else {
6959                         limit = "";
6960                 }
6961         }
6962
6963         if (limit [0] != '\0') {
6964                 char *caller_method_name = mono_method_full_name (caller_method, TRUE);
6965
6966                 strncmp_result = strncmp (caller_method_name, limit, strlen (limit));
6967                 g_free (caller_method_name);
6968
6969                 //return (strncmp_result <= 0);
6970                 return (strncmp_result == 0);
6971         } else {
6972                 return TRUE;
6973         }
6974 }
6975 #endif
6976
6977 static void
6978 emit_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
6979 {
6980         static double r8_0 = 0.0;
6981         static float r4_0 = 0.0;
6982         MonoInst *ins;
6983         int t;
6984
6985         rtype = mini_get_underlying_type (rtype);
6986         t = rtype->type;
6987
6988         if (rtype->byref) {
6989                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
6990         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
6991                 MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
6992         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
6993                 MONO_EMIT_NEW_I8CONST (cfg, dreg, 0);
6994         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
6995                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
6996                 ins->type = STACK_R4;
6997                 ins->inst_p0 = (void*)&r4_0;
6998                 ins->dreg = dreg;
6999                 MONO_ADD_INS (cfg->cbb, ins);
7000         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7001                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
7002                 ins->type = STACK_R8;
7003                 ins->inst_p0 = (void*)&r8_0;
7004                 ins->dreg = dreg;
7005                 MONO_ADD_INS (cfg->cbb, ins);
7006         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7007                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7008                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7009         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7010                 MONO_EMIT_NEW_VZERO (cfg, dreg, mono_class_from_mono_type (rtype));
7011         } else {
7012                 MONO_EMIT_NEW_PCONST (cfg, dreg, NULL);
7013         }
7014 }
7015
7016 static void
7017 emit_dummy_init_rvar (MonoCompile *cfg, int dreg, MonoType *rtype)
7018 {
7019         int t;
7020
7021         rtype = mini_get_underlying_type (rtype);
7022         t = rtype->type;
7023
7024         if (rtype->byref) {
7025                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_PCONST);
7026         } else if (t >= MONO_TYPE_BOOLEAN && t <= MONO_TYPE_U4) {
7027                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_ICONST);
7028         } else if (t == MONO_TYPE_I8 || t == MONO_TYPE_U8) {
7029                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_I8CONST);
7030         } else if (cfg->r4fp && t == MONO_TYPE_R4) {
7031                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R4CONST);
7032         } else if (t == MONO_TYPE_R4 || t == MONO_TYPE_R8) {
7033                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_R8CONST);
7034         } else if ((t == MONO_TYPE_VALUETYPE) || (t == MONO_TYPE_TYPEDBYREF) ||
7035                    ((t == MONO_TYPE_GENERICINST) && mono_type_generic_inst_is_valuetype (rtype))) {
7036                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7037         } else if (((t == MONO_TYPE_VAR) || (t == MONO_TYPE_MVAR)) && mini_type_var_is_vt (rtype)) {
7038                 MONO_EMIT_NEW_DUMMY_INIT (cfg, dreg, OP_DUMMY_VZERO);
7039         } else {
7040                 emit_init_rvar (cfg, dreg, rtype);
7041         }
7042 }
7043
7044 /* If INIT is FALSE, emit dummy initialization statements to keep the IR valid */
7045 static void
7046 emit_init_local (MonoCompile *cfg, int local, MonoType *type, gboolean init)
7047 {
7048         MonoInst *var = cfg->locals [local];
7049         if (COMPILE_SOFT_FLOAT (cfg)) {
7050                 MonoInst *store;
7051                 int reg = alloc_dreg (cfg, (MonoStackType)var->type);
7052                 emit_init_rvar (cfg, reg, type);
7053                 EMIT_NEW_LOCSTORE (cfg, store, local, cfg->cbb->last_ins);
7054         } else {
7055                 if (init)
7056                         emit_init_rvar (cfg, var->dreg, type);
7057                 else
7058                         emit_dummy_init_rvar (cfg, var->dreg, type);
7059         }
7060 }
7061
7062 /*
7063  * inline_method:
7064  *
7065  *   Return the cost of inlining CMETHOD.
7066  */
7067 static int
7068 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
7069                            guchar *ip, guint real_offset, gboolean inline_always)
7070 {
7071         MonoError error;
7072         MonoInst *ins, *rvar = NULL;
7073         MonoMethodHeader *cheader;
7074         MonoBasicBlock *ebblock, *sbblock;
7075         int i, costs;
7076         MonoMethod *prev_inlined_method;
7077         MonoInst **prev_locals, **prev_args;
7078         MonoType **prev_arg_types;
7079         guint prev_real_offset;
7080         GHashTable *prev_cbb_hash;
7081         MonoBasicBlock **prev_cil_offset_to_bb;
7082         MonoBasicBlock *prev_cbb;
7083         unsigned char* prev_cil_start;
7084         guint32 prev_cil_offset_to_bb_len;
7085         MonoMethod *prev_current_method;
7086         MonoGenericContext *prev_generic_context;
7087         gboolean ret_var_set, prev_ret_var_set, prev_disable_inline, virtual_ = FALSE;
7088
7089         g_assert (cfg->exception_type == MONO_EXCEPTION_NONE);
7090
7091 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
7092         if ((! inline_always) && ! check_inline_called_method_name_limit (cmethod))
7093                 return 0;
7094 #endif
7095 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
7096         if ((! inline_always) && ! check_inline_caller_method_name_limit (cfg->method))
7097                 return 0;
7098 #endif
7099
7100         if (!fsig)
7101                 fsig = mono_method_signature (cmethod);
7102
7103         if (cfg->verbose_level > 2)
7104                 printf ("INLINE START %p %s -> %s\n", cmethod,  mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7105
7106         if (!cmethod->inline_info) {
7107                 cfg->stat_inlineable_methods++;
7108                 cmethod->inline_info = 1;
7109         }
7110
7111         /* allocate local variables */
7112         cheader = mono_method_get_header_checked (cmethod, &error);
7113         if (!cheader) {
7114                 if (inline_always) {
7115                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
7116                         mono_error_move (&cfg->error, &error);
7117                 } else {
7118                         mono_error_cleanup (&error);
7119                 }
7120                 return 0;
7121         }
7122
7123         /*Must verify before creating locals as it can cause the JIT to assert.*/
7124         if (mono_compile_is_broken (cfg, cmethod, FALSE)) {
7125                 mono_metadata_free_mh (cheader);
7126                 return 0;
7127         }
7128
7129         /* allocate space to store the return value */
7130         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
7131                 rvar = mono_compile_create_var (cfg, fsig->ret, OP_LOCAL);
7132         }
7133
7134         prev_locals = cfg->locals;
7135         cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, cheader->num_locals * sizeof (MonoInst*));
7136         for (i = 0; i < cheader->num_locals; ++i)
7137                 cfg->locals [i] = mono_compile_create_var (cfg, cheader->locals [i], OP_LOCAL);
7138
7139         /* allocate start and end blocks */
7140         /* This is needed so if the inline is aborted, we can clean up */
7141         NEW_BBLOCK (cfg, sbblock);
7142         sbblock->real_offset = real_offset;
7143
7144         NEW_BBLOCK (cfg, ebblock);
7145         ebblock->block_num = cfg->num_bblocks++;
7146         ebblock->real_offset = real_offset;
7147
7148         prev_args = cfg->args;
7149         prev_arg_types = cfg->arg_types;
7150         prev_inlined_method = cfg->inlined_method;
7151         cfg->inlined_method = cmethod;
7152         cfg->ret_var_set = FALSE;
7153         cfg->inline_depth ++;
7154         prev_real_offset = cfg->real_offset;
7155         prev_cbb_hash = cfg->cbb_hash;
7156         prev_cil_offset_to_bb = cfg->cil_offset_to_bb;
7157         prev_cil_offset_to_bb_len = cfg->cil_offset_to_bb_len;
7158         prev_cil_start = cfg->cil_start;
7159         prev_cbb = cfg->cbb;
7160         prev_current_method = cfg->current_method;
7161         prev_generic_context = cfg->generic_context;
7162         prev_ret_var_set = cfg->ret_var_set;
7163         prev_disable_inline = cfg->disable_inline;
7164
7165         if (ip && *ip == CEE_CALLVIRT && !(cmethod->flags & METHOD_ATTRIBUTE_STATIC))
7166                 virtual_ = TRUE;
7167
7168         costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, sp, real_offset, virtual_);
7169
7170         ret_var_set = cfg->ret_var_set;
7171
7172         cfg->inlined_method = prev_inlined_method;
7173         cfg->real_offset = prev_real_offset;
7174         cfg->cbb_hash = prev_cbb_hash;
7175         cfg->cil_offset_to_bb = prev_cil_offset_to_bb;
7176         cfg->cil_offset_to_bb_len = prev_cil_offset_to_bb_len;
7177         cfg->cil_start = prev_cil_start;
7178         cfg->locals = prev_locals;
7179         cfg->args = prev_args;
7180         cfg->arg_types = prev_arg_types;
7181         cfg->current_method = prev_current_method;
7182         cfg->generic_context = prev_generic_context;
7183         cfg->ret_var_set = prev_ret_var_set;
7184         cfg->disable_inline = prev_disable_inline;
7185         cfg->inline_depth --;
7186
7187         if ((costs >= 0 && costs < 60) || inline_always || (costs >= 0 && (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_AGGRESSIVE_INLINING))) {
7188                 if (cfg->verbose_level > 2)
7189                         printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7190
7191                 cfg->stat_inlined_methods++;
7192
7193                 /* always add some code to avoid block split failures */
7194                 MONO_INST_NEW (cfg, ins, OP_NOP);
7195                 MONO_ADD_INS (prev_cbb, ins);
7196
7197                 prev_cbb->next_bb = sbblock;
7198                 link_bblock (cfg, prev_cbb, sbblock);
7199
7200                 /*
7201                  * Get rid of the begin and end bblocks if possible to aid local
7202                  * optimizations.
7203                  */
7204                 mono_merge_basic_blocks (cfg, prev_cbb, sbblock);
7205
7206                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
7207                         mono_merge_basic_blocks (cfg, prev_cbb, prev_cbb->out_bb [0]);
7208
7209                 if ((ebblock->in_count == 1) && ebblock->in_bb [0]->out_count == 1) {
7210                         MonoBasicBlock *prev = ebblock->in_bb [0];
7211
7212                         if (prev->next_bb == ebblock) {
7213                                 mono_merge_basic_blocks (cfg, prev, ebblock);
7214                                 cfg->cbb = prev;
7215                                 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
7216                                         mono_merge_basic_blocks (cfg, prev_cbb, prev);
7217                                         cfg->cbb = prev_cbb;
7218                                 }
7219                         } else {
7220                                 /* There could be a bblock after 'prev', and making 'prev' the current bb could cause problems */
7221                                 cfg->cbb = ebblock;
7222                         }
7223                 } else {
7224                         /*
7225                          * Its possible that the rvar is set in some prev bblock, but not in others.
7226                          * (#1835).
7227                          */
7228                         if (rvar) {
7229                                 MonoBasicBlock *bb;
7230
7231                                 for (i = 0; i < ebblock->in_count; ++i) {
7232                                         bb = ebblock->in_bb [i];
7233
7234                                         if (bb->last_ins && bb->last_ins->opcode == OP_NOT_REACHED) {
7235                                                 cfg->cbb = bb;
7236
7237                                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7238                                         }
7239                                 }
7240                         }
7241
7242                         cfg->cbb = ebblock;
7243                 }
7244
7245                 if (rvar) {
7246                         /*
7247                          * If the inlined method contains only a throw, then the ret var is not
7248                          * set, so set it to a dummy value.
7249                          */
7250                         if (!ret_var_set)
7251                                 emit_init_rvar (cfg, rvar->dreg, fsig->ret);
7252
7253                         EMIT_NEW_TEMPLOAD (cfg, ins, rvar->inst_c0);
7254                         *sp++ = ins;
7255                 }
7256                 cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7257                 return costs + 1;
7258         } else {
7259                 if (cfg->verbose_level > 2)
7260                         printf ("INLINE ABORTED %s (cost %d)\n", mono_method_full_name (cmethod, TRUE), costs);
7261                 cfg->exception_type = MONO_EXCEPTION_NONE;
7262                 mono_loader_clear_error ();
7263
7264                 /* This gets rid of the newly added bblocks */
7265                 cfg->cbb = prev_cbb;
7266         }
7267         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, cheader);
7268         return 0;
7269 }
7270
7271 /*
7272  * Some of these comments may well be out-of-date.
7273  * Design decisions: we do a single pass over the IL code (and we do bblock
7274  * splitting/merging in the few cases when it's required: a back jump to an IL
7275  * address that was not already seen as bblock starting point).
7276  * Code is validated as we go (full verification is still better left to metadata/verify.c).
7277  * Complex operations are decomposed in simpler ones right away. We need to let the
7278  * arch-specific code peek and poke inside this process somehow (except when the
7279  * optimizations can take advantage of the full semantic info of coarse opcodes).
7280  * All the opcodes of the form opcode.s are 'normalized' to opcode.
7281  * MonoInst->opcode initially is the IL opcode or some simplification of that
7282  * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
7283  * opcode with value bigger than OP_LAST.
7284  * At this point the IR can be handed over to an interpreter, a dumb code generator
7285  * or to the optimizing code generator that will translate it to SSA form.
7286  *
7287  * Profiling directed optimizations.
7288  * We may compile by default with few or no optimizations and instrument the code
7289  * or the user may indicate what methods to optimize the most either in a config file
7290  * or through repeated runs where the compiler applies offline the optimizations to
7291  * each method and then decides if it was worth it.
7292  */
7293
7294 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
7295 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
7296 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
7297 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
7298 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
7299 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
7300 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
7301 #define CHECK_TYPELOAD(klass) if (!(klass) || mono_class_has_failure (klass)) TYPE_LOAD_ERROR ((klass))
7302
7303 /* offset from br.s -> br like opcodes */
7304 #define BIG_BRANCH_OFFSET 13
7305
7306 static gboolean
7307 ip_in_bb (MonoCompile *cfg, MonoBasicBlock *bb, const guint8* ip)
7308 {
7309         MonoBasicBlock *b = cfg->cil_offset_to_bb [ip - cfg->cil_start];
7310
7311         return b == NULL || b == bb;
7312 }
7313
7314 static int
7315 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
7316 {
7317         unsigned char *ip = start;
7318         unsigned char *target;
7319         int i;
7320         guint cli_addr;
7321         MonoBasicBlock *bblock;
7322         const MonoOpcode *opcode;
7323
7324         while (ip < end) {
7325                 cli_addr = ip - start;
7326                 i = mono_opcode_value ((const guint8 **)&ip, end);
7327                 if (i < 0)
7328                         UNVERIFIED;
7329                 opcode = &mono_opcodes [i];
7330                 switch (opcode->argument) {
7331                 case MonoInlineNone:
7332                         ip++;
7333                         break;
7334                 case MonoInlineString:
7335                 case MonoInlineType:
7336                 case MonoInlineField:
7337                 case MonoInlineMethod:
7338                 case MonoInlineTok:
7339                 case MonoInlineSig:
7340                 case MonoShortInlineR:
7341                 case MonoInlineI:
7342                         ip += 5;
7343                         break;
7344                 case MonoInlineVar:
7345                         ip += 3;
7346                         break;
7347                 case MonoShortInlineVar:
7348                 case MonoShortInlineI:
7349                         ip += 2;
7350                         break;
7351                 case MonoShortInlineBrTarget:
7352                         target = start + cli_addr + 2 + (signed char)ip [1];
7353                         GET_BBLOCK (cfg, bblock, target);
7354                         ip += 2;
7355                         if (ip < end)
7356                                 GET_BBLOCK (cfg, bblock, ip);
7357                         break;
7358                 case MonoInlineBrTarget:
7359                         target = start + cli_addr + 5 + (gint32)read32 (ip + 1);
7360                         GET_BBLOCK (cfg, bblock, target);
7361                         ip += 5;
7362                         if (ip < end)
7363                                 GET_BBLOCK (cfg, bblock, ip);
7364                         break;
7365                 case MonoInlineSwitch: {
7366                         guint32 n = read32 (ip + 1);
7367                         guint32 j;
7368                         ip += 5;
7369                         cli_addr += 5 + 4 * n;
7370                         target = start + cli_addr;
7371                         GET_BBLOCK (cfg, bblock, target);
7372
7373                         for (j = 0; j < n; ++j) {
7374                                 target = start + cli_addr + (gint32)read32 (ip);
7375                                 GET_BBLOCK (cfg, bblock, target);
7376                                 ip += 4;
7377                         }
7378                         break;
7379                 }
7380                 case MonoInlineR:
7381                 case MonoInlineI8:
7382                         ip += 9;
7383                         break;
7384                 default:
7385                         g_assert_not_reached ();
7386                 }
7387
7388                 if (i == CEE_THROW) {
7389                         unsigned char *bb_start = ip - 1;
7390
7391                         /* Find the start of the bblock containing the throw */
7392                         bblock = NULL;
7393                         while ((bb_start >= start) && !bblock) {
7394                                 bblock = cfg->cil_offset_to_bb [(bb_start) - start];
7395                                 bb_start --;
7396                         }
7397                         if (bblock)
7398                                 bblock->out_of_line = 1;
7399                 }
7400         }
7401         return 0;
7402 unverified:
7403 exception_exit:
7404         *pos = ip;
7405         return 1;
7406 }
7407
7408 static inline MonoMethod *
7409 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context, MonoError *error)
7410 {
7411         MonoMethod *method;
7412
7413         mono_error_init (error);
7414
7415         if (m->wrapper_type != MONO_WRAPPER_NONE) {
7416                 method = (MonoMethod *)mono_method_get_wrapper_data (m, token);
7417                 if (context) {
7418                         method = mono_class_inflate_generic_method_checked (method, context, error);
7419                 }
7420         } else {
7421                 method = mono_get_method_checked (m->klass->image, token, klass, context, error);
7422         }
7423
7424         return method;
7425 }
7426
7427 static inline MonoMethod *
7428 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
7429 {
7430         MonoError error;
7431         MonoMethod *method = mini_get_method_allow_open (m, token, klass, context, cfg ? &cfg->error : &error);
7432
7433         if (method && cfg && !cfg->gshared && mono_class_is_open_constructed_type (&method->klass->byval_arg)) {
7434                 mono_error_set_bad_image (&cfg->error, cfg->method->klass->image, "Method with open type while not compiling gshared");
7435                 method = NULL;
7436         }
7437
7438         if (!method && !cfg)
7439                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7440
7441         return method;
7442 }
7443
7444 static inline MonoClass*
7445 mini_get_class (MonoMethod *method, guint32 token, MonoGenericContext *context)
7446 {
7447         MonoError error;
7448         MonoClass *klass;
7449
7450         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7451                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
7452                 if (context) {
7453                         klass = mono_class_inflate_generic_class_checked (klass, context, &error);
7454                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7455                 }
7456         } else {
7457                 klass = mono_class_get_and_inflate_typespec_checked (method->klass->image, token, context, &error);
7458                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
7459         }
7460         if (klass)
7461                 mono_class_init (klass);
7462         return klass;
7463 }
7464
7465 static inline MonoMethodSignature*
7466 mini_get_signature (MonoMethod *method, guint32 token, MonoGenericContext *context)
7467 {
7468         MonoMethodSignature *fsig;
7469
7470         if (method->wrapper_type != MONO_WRAPPER_NONE) {
7471                 fsig = (MonoMethodSignature *)mono_method_get_wrapper_data (method, token);
7472         } else {
7473                 fsig = mono_metadata_parse_signature (method->klass->image, token);
7474         }
7475         if (context) {
7476                 MonoError error;
7477                 fsig = mono_inflate_generic_signature(fsig, context, &error);
7478                 // FIXME:
7479                 g_assert(mono_error_ok(&error));
7480         }
7481         return fsig;
7482 }
7483
7484 static MonoMethod*
7485 throw_exception (void)
7486 {
7487         static MonoMethod *method = NULL;
7488
7489         if (!method) {
7490                 MonoSecurityManager *secman = mono_security_manager_get_methods ();
7491                 method = mono_class_get_method_from_name (secman->securitymanager, "ThrowException", 1);
7492         }
7493         g_assert (method);
7494         return method;
7495 }
7496
7497 static void
7498 emit_throw_exception (MonoCompile *cfg, MonoException *ex)
7499 {
7500         MonoMethod *thrower = throw_exception ();
7501         MonoInst *args [1];
7502
7503         EMIT_NEW_PCONST (cfg, args [0], ex);
7504         mono_emit_method_call (cfg, thrower, args, NULL);
7505 }
7506
7507 /*
7508  * Return the original method is a wrapper is specified. We can only access
7509  * the custom attributes from the original method.
7510  */
7511 static MonoMethod*
7512 get_original_method (MonoMethod *method)
7513 {
7514         if (method->wrapper_type == MONO_WRAPPER_NONE)
7515                 return method;
7516
7517         /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
7518         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED)
7519                 return NULL;
7520
7521         /* in other cases we need to find the original method */
7522         return mono_marshal_method_from_wrapper (method);
7523 }
7524
7525 static void
7526 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field)
7527 {
7528         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7529         MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
7530         if (ex)
7531                 emit_throw_exception (cfg, ex);
7532 }
7533
7534 static void
7535 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee)
7536 {
7537         /* we can't get the coreclr security level on wrappers since they don't have the attributes */
7538         MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
7539         if (ex)
7540                 emit_throw_exception (cfg, ex);
7541 }
7542
7543 /*
7544  * Check that the IL instructions at ip are the array initialization
7545  * sequence and return the pointer to the data and the size.
7546  */
7547 static const char*
7548 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
7549 {
7550         /*
7551          * newarr[System.Int32]
7552          * dup
7553          * ldtoken field valuetype ...
7554          * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
7555          */
7556         if (ip [0] == CEE_DUP && ip [1] == CEE_LDTOKEN && ip [5] == 0x4 && ip [6] == CEE_CALL) {
7557                 MonoError error;
7558                 guint32 token = read32 (ip + 7);
7559                 guint32 field_token = read32 (ip + 2);
7560                 guint32 field_index = field_token & 0xffffff;
7561                 guint32 rva;
7562                 const char *data_ptr;
7563                 int size = 0;
7564                 MonoMethod *cmethod;
7565                 MonoClass *dummy_class;
7566                 MonoClassField *field = mono_field_from_token_checked (method->klass->image, field_token, &dummy_class, NULL, &error);
7567                 int dummy_align;
7568
7569                 if (!field) {
7570                         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7571                         return NULL;
7572                 }
7573
7574                 *out_field_token = field_token;
7575
7576                 cmethod = mini_get_method (NULL, method, token, NULL, NULL);
7577                 if (!cmethod)
7578                         return NULL;
7579                 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
7580                         return NULL;
7581                 switch (mono_type_get_underlying_type (&klass->byval_arg)->type) {
7582                 case MONO_TYPE_BOOLEAN:
7583                 case MONO_TYPE_I1:
7584                 case MONO_TYPE_U1:
7585                         size = 1; break;
7586                 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
7587 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
7588                 case MONO_TYPE_CHAR:
7589                 case MONO_TYPE_I2:
7590                 case MONO_TYPE_U2:
7591                         size = 2; break;
7592                 case MONO_TYPE_I4:
7593                 case MONO_TYPE_U4:
7594                 case MONO_TYPE_R4:
7595                         size = 4; break;
7596                 case MONO_TYPE_R8:
7597                 case MONO_TYPE_I8:
7598                 case MONO_TYPE_U8:
7599                         size = 8; break;
7600 #endif
7601                 default:
7602                         return NULL;
7603                 }
7604                 size *= len;
7605                 if (size > mono_type_size (field->type, &dummy_align))
7606                     return NULL;
7607                 *out_size = size;
7608                 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
7609                 if (!image_is_dynamic (method->klass->image)) {
7610                         field_index = read32 (ip + 2) & 0xffffff;
7611                         mono_metadata_field_info (method->klass->image, field_index - 1, NULL, &rva, NULL);
7612                         data_ptr = mono_image_rva_map (method->klass->image, rva);
7613                         /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
7614                         /* for aot code we do the lookup on load */
7615                         if (aot && data_ptr)
7616                                 return (const char *)GUINT_TO_POINTER (rva);
7617                 } else {
7618                         /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
7619                         g_assert (!aot);
7620                         data_ptr = mono_field_get_data (field);
7621                 }
7622                 return data_ptr;
7623         }
7624         return NULL;
7625 }
7626
7627 static void
7628 set_exception_type_from_invalid_il (MonoCompile *cfg, MonoMethod *method, unsigned char *ip)
7629 {
7630         MonoError error;
7631         char *method_fname = mono_method_full_name (method, TRUE);
7632         char *method_code;
7633         MonoMethodHeader *header = mono_method_get_header_checked (method, &error);
7634
7635         if (!header) {
7636                 method_code = g_strdup_printf ("could not parse method body due to %s", mono_error_get_message (&error));
7637                 mono_error_cleanup (&error);
7638         } else if (header->code_size == 0)
7639                 method_code = g_strdup ("method body is empty.");
7640         else
7641                 method_code = mono_disasm_code_one (NULL, method, ip, NULL);
7642         mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code));
7643         g_free (method_fname);
7644         g_free (method_code);
7645         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
7646 }
7647
7648 static void
7649 emit_stloc_ir (MonoCompile *cfg, MonoInst **sp, MonoMethodHeader *header, int n)
7650 {
7651         MonoInst *ins;
7652         guint32 opcode = mono_type_to_regmove (cfg, header->locals [n]);
7653         if ((opcode == OP_MOVE) && cfg->cbb->last_ins == sp [0]  &&
7654                         ((sp [0]->opcode == OP_ICONST) || (sp [0]->opcode == OP_I8CONST))) {
7655                 /* Optimize reg-reg moves away */
7656                 /*
7657                  * Can't optimize other opcodes, since sp[0] might point to
7658                  * the last ins of a decomposed opcode.
7659                  */
7660                 sp [0]->dreg = (cfg)->locals [n]->dreg;
7661         } else {
7662                 EMIT_NEW_LOCSTORE (cfg, ins, n, *sp);
7663         }
7664 }
7665
7666 /*
7667  * ldloca inhibits many optimizations so try to get rid of it in common
7668  * cases.
7669  */
7670 static inline unsigned char *
7671 emit_optimized_ldloca_ir (MonoCompile *cfg, unsigned char *ip, unsigned char *end, int size)
7672 {
7673         int local, token;
7674         MonoClass *klass;
7675         MonoType *type;
7676
7677         if (size == 1) {
7678                 local = ip [1];
7679                 ip += 2;
7680         } else {
7681                 local = read16 (ip + 2);
7682                 ip += 4;
7683         }
7684
7685         if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
7686                 /* From the INITOBJ case */
7687                 token = read32 (ip + 2);
7688                 klass = mini_get_class (cfg->current_method, token, cfg->generic_context);
7689                 CHECK_TYPELOAD (klass);
7690                 type = mini_get_underlying_type (&klass->byval_arg);
7691                 emit_init_local (cfg, local, type, TRUE);
7692                 return ip + 6;
7693         }
7694  exception_exit:
7695         return NULL;
7696 }
7697
7698 static MonoInst*
7699 emit_llvmonly_virtual_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used, MonoInst **sp)
7700 {
7701         MonoInst *icall_args [16];
7702         MonoInst *call_target, *ins, *vtable_ins;
7703         int arg_reg, this_reg, vtable_reg;
7704         gboolean is_iface = cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE;
7705         gboolean is_gsharedvt = cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig);
7706         gboolean variant_iface = FALSE;
7707         guint32 slot;
7708         int offset;
7709
7710         /*
7711          * In llvm-only mode, vtables contain function descriptors instead of
7712          * method addresses/trampolines.
7713          */
7714         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
7715
7716         if (is_iface)
7717                 slot = mono_method_get_imt_slot (cmethod);
7718         else
7719                 slot = mono_method_get_vtable_index (cmethod);
7720
7721         this_reg = sp [0]->dreg;
7722
7723         if (is_iface && mono_class_has_variant_generic_params (cmethod->klass))
7724                 variant_iface = TRUE;
7725
7726         if (!fsig->generic_param_count && !is_iface && !is_gsharedvt) {
7727                 /*
7728                  * The simplest case, a normal virtual call.
7729                  */
7730                 int slot_reg = alloc_preg (cfg);
7731                 int addr_reg = alloc_preg (cfg);
7732                 int arg_reg = alloc_preg (cfg);
7733                 MonoBasicBlock *non_null_bb;
7734
7735                 vtable_reg = alloc_preg (cfg);
7736                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7737                 offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7738
7739                 /* Load the vtable slot, which contains a function descriptor. */
7740                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7741
7742                 NEW_BBLOCK (cfg, non_null_bb);
7743
7744                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7745                 cfg->cbb->last_ins->flags |= MONO_INST_LIKELY;
7746                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, non_null_bb);
7747
7748                 /* Slow path */
7749                 // FIXME: Make the wrapper use the preserveall cconv
7750                 // FIXME: Use one icall per slot for small slot numbers ?
7751                 icall_args [0] = vtable_ins;
7752                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7753                 /* Make the icall return the vtable slot value to save some code space */
7754                 ins = mono_emit_jit_icall (cfg, mono_init_vtable_slot, icall_args);
7755                 ins->dreg = slot_reg;
7756                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, non_null_bb);
7757
7758                 /* Fastpath */
7759                 MONO_START_BB (cfg, non_null_bb);
7760                 /* Load the address + arg from the vtable slot */
7761                 EMIT_NEW_LOAD_MEMBASE (cfg, call_target, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7762                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, arg_reg, slot_reg, SIZEOF_VOID_P);
7763
7764                 return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7765         }
7766
7767         if (!fsig->generic_param_count && is_iface && !variant_iface && !is_gsharedvt) {
7768                 /*
7769                  * A simple interface call
7770                  *
7771                  * We make a call through an imt slot to obtain the function descriptor we need to call.
7772                  * The imt slot contains a function descriptor for a runtime function + arg.
7773                  */
7774                 int slot_reg = alloc_preg (cfg);
7775                 int addr_reg = alloc_preg (cfg);
7776                 int arg_reg = alloc_preg (cfg);
7777                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7778
7779                 vtable_reg = alloc_preg (cfg);
7780                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7781                 offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7782
7783                 /*
7784                  * The slot is already initialized when the vtable is created so there is no need
7785                  * to check it here.
7786                  */
7787
7788                 /* Load the imt slot, which contains a function descriptor. */
7789                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7790
7791                 /* Load the address + arg of the imt thunk from the imt slot */
7792                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7793                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7794                 /*
7795                  * IMT thunks in llvm-only mode are C functions which take an info argument
7796                  * plus the imt method and return the ftndesc to call.
7797                  */
7798                 icall_args [0] = thunk_arg_ins;
7799                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7800                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7801                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7802
7803                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7804         }
7805
7806         if ((fsig->generic_param_count || variant_iface) && !is_gsharedvt) {
7807                 /*
7808                  * This is similar to the interface case, the vtable slot points to an imt thunk which is
7809                  * dynamically extended as more instantiations are discovered.
7810                  * This handles generic virtual methods both on classes and interfaces.
7811                  */
7812                 int slot_reg = alloc_preg (cfg);
7813                 int addr_reg = alloc_preg (cfg);
7814                 int arg_reg = alloc_preg (cfg);
7815                 int ftndesc_reg = alloc_preg (cfg);
7816                 MonoInst *thunk_addr_ins, *thunk_arg_ins, *ftndesc_ins;
7817                 MonoBasicBlock *slowpath_bb, *end_bb;
7818
7819                 NEW_BBLOCK (cfg, slowpath_bb);
7820                 NEW_BBLOCK (cfg, end_bb);
7821
7822                 vtable_reg = alloc_preg (cfg);
7823                 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_ins, OP_LOAD_MEMBASE, vtable_reg, this_reg, MONO_STRUCT_OFFSET (MonoObject, vtable));
7824                 if (is_iface)
7825                         offset = ((gint32)slot - MONO_IMT_SIZE) * SIZEOF_VOID_P;
7826                 else
7827                         offset = MONO_STRUCT_OFFSET (MonoVTable, vtable) + (slot * SIZEOF_VOID_P);
7828
7829                 /* Load the slot, which contains a function descriptor. */
7830                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, slot_reg, vtable_reg, offset);
7831
7832                 /* These slots are not initialized, so fall back to the slow path until they are initialized */
7833                 /* That happens when mono_method_add_generic_virtual_invocation () creates an IMT thunk */
7834                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, slot_reg, 0);
7835                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7836
7837                 /* Fastpath */
7838                 /* Same as with iface calls */
7839                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_addr_ins, OP_LOAD_MEMBASE, addr_reg, slot_reg, 0);
7840                 EMIT_NEW_LOAD_MEMBASE (cfg, thunk_arg_ins, OP_LOAD_MEMBASE, arg_reg, slot_reg, SIZEOF_VOID_P);
7841                 icall_args [0] = thunk_arg_ins;
7842                 icall_args [1] = emit_get_rgctx_method (cfg, context_used,
7843                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7844                 ftndesc_ins = mono_emit_calli (cfg, helper_sig_llvmonly_imt_thunk, icall_args, thunk_addr_ins, NULL, NULL);
7845                 ftndesc_ins->dreg = ftndesc_reg;
7846                 /*
7847                  * Unlike normal iface calls, these imt thunks can return NULL, i.e. when they are passed an instantiation
7848                  * they don't know about yet. Fall back to the slowpath in that case.
7849                  */
7850                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, ftndesc_reg, 0);
7851                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, slowpath_bb);
7852
7853                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7854
7855                 /* Slowpath */
7856                 MONO_START_BB (cfg, slowpath_bb);
7857                 icall_args [0] = vtable_ins;
7858                 EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7859                 icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7860                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD);
7861                 if (is_iface)
7862                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_iface_call, icall_args);
7863                 else
7864                         ftndesc_ins = mono_emit_jit_icall (cfg, mono_resolve_generic_virtual_call, icall_args);
7865                 ftndesc_ins->dreg = ftndesc_reg;
7866                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
7867
7868                 /* Common case */
7869                 MONO_START_BB (cfg, end_bb);
7870                 return emit_llvmonly_calli (cfg, fsig, sp, ftndesc_ins);
7871         }
7872
7873         /*
7874          * Non-optimized cases
7875          */
7876         icall_args [0] = sp [0];
7877         EMIT_NEW_ICONST (cfg, icall_args [1], slot);
7878
7879         icall_args [2] = emit_get_rgctx_method (cfg, context_used,
7880                                                                                         cmethod, MONO_RGCTX_INFO_METHOD);
7881
7882         arg_reg = alloc_preg (cfg);
7883         MONO_EMIT_NEW_PCONST (cfg, arg_reg, NULL);
7884         EMIT_NEW_VARLOADA_VREG (cfg, icall_args [3], arg_reg, &mono_defaults.int_class->byval_arg);
7885
7886         g_assert (is_gsharedvt);
7887         if (is_iface)
7888                 call_target = mono_emit_jit_icall (cfg, mono_resolve_iface_call_gsharedvt, icall_args);
7889         else
7890                 call_target = mono_emit_jit_icall (cfg, mono_resolve_vcall_gsharedvt, icall_args);
7891
7892         /*
7893          * Pass the extra argument even if the callee doesn't receive it, most
7894          * calling conventions allow this.
7895          */
7896         return emit_extra_arg_calli (cfg, fsig, sp, arg_reg, call_target);
7897 }
7898
7899 static gboolean
7900 is_exception_class (MonoClass *klass)
7901 {
7902         while (klass) {
7903                 if (klass == mono_defaults.exception_class)
7904                         return TRUE;
7905                 klass = klass->parent;
7906         }
7907         return FALSE;
7908 }
7909
7910 /*
7911  * is_jit_optimizer_disabled:
7912  *
7913  *   Determine whenever M's assembly has a DebuggableAttribute with the
7914  * IsJITOptimizerDisabled flag set.
7915  */
7916 static gboolean
7917 is_jit_optimizer_disabled (MonoMethod *m)
7918 {
7919         MonoError error;
7920         MonoAssembly *ass = m->klass->image->assembly;
7921         MonoCustomAttrInfo* attrs;
7922         MonoClass *klass;
7923         int i;
7924         gboolean val = FALSE;
7925
7926         g_assert (ass);
7927         if (ass->jit_optimizer_disabled_inited)
7928                 return ass->jit_optimizer_disabled;
7929
7930         klass = mono_class_try_get_debuggable_attribute_class ();
7931
7932         if (!klass) {
7933                 /* Linked away */
7934                 ass->jit_optimizer_disabled = FALSE;
7935                 mono_memory_barrier ();
7936                 ass->jit_optimizer_disabled_inited = TRUE;
7937                 return FALSE;
7938         }
7939
7940         attrs = mono_custom_attrs_from_assembly_checked (ass, &error);
7941         mono_error_cleanup (&error); /* FIXME don't swallow the error */
7942         if (attrs) {
7943                 for (i = 0; i < attrs->num_attrs; ++i) {
7944                         MonoCustomAttrEntry *attr = &attrs->attrs [i];
7945                         const gchar *p;
7946                         MonoMethodSignature *sig;
7947
7948                         if (!attr->ctor || attr->ctor->klass != klass)
7949                                 continue;
7950                         /* Decode the attribute. See reflection.c */
7951                         p = (const char*)attr->data;
7952                         g_assert (read16 (p) == 0x0001);
7953                         p += 2;
7954
7955                         // FIXME: Support named parameters
7956                         sig = mono_method_signature (attr->ctor);
7957                         if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
7958                                 continue;
7959                         /* Two boolean arguments */
7960                         p ++;
7961                         val = *p;
7962                 }
7963                 mono_custom_attrs_free (attrs);
7964         }
7965
7966         ass->jit_optimizer_disabled = val;
7967         mono_memory_barrier ();
7968         ass->jit_optimizer_disabled_inited = TRUE;
7969
7970         return val;
7971 }
7972
7973 static gboolean
7974 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig, int call_opcode)
7975 {
7976         gboolean supported_tail_call;
7977         int i;
7978
7979         supported_tail_call = mono_arch_tail_call_supported (cfg, mono_method_signature (method), mono_method_signature (cmethod));
7980
7981         for (i = 0; i < fsig->param_count; ++i) {
7982                 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
7983                         /* These can point to the current method's stack */
7984                         supported_tail_call = FALSE;
7985         }
7986         if (fsig->hasthis && cmethod->klass->valuetype)
7987                 /* this might point to the current method's stack */
7988                 supported_tail_call = FALSE;
7989         if (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)
7990                 supported_tail_call = FALSE;
7991         if (cfg->method->save_lmf)
7992                 supported_tail_call = FALSE;
7993         if (cmethod->wrapper_type && cmethod->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
7994                 supported_tail_call = FALSE;
7995         if (call_opcode != CEE_CALL)
7996                 supported_tail_call = FALSE;
7997
7998         /* Debugging support */
7999 #if 0
8000         if (supported_tail_call) {
8001                 if (!mono_debug_count ())
8002                         supported_tail_call = FALSE;
8003         }
8004 #endif
8005
8006         return supported_tail_call;
8007 }
8008
8009 /*
8010  * handle_ctor_call:
8011  *
8012  *   Handle calls made to ctors from NEWOBJ opcodes.
8013  */
8014 static void
8015 handle_ctor_call (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, int context_used,
8016                                   MonoInst **sp, guint8 *ip, int *inline_costs)
8017 {
8018         MonoInst *vtable_arg = NULL, *callvirt_this_arg = NULL, *ins;
8019
8020         if (cmethod->klass->valuetype && mono_class_generic_sharing_enabled (cmethod->klass) &&
8021                                         mono_method_is_generic_sharable (cmethod, TRUE)) {
8022                 if (cmethod->is_inflated && mono_method_get_context (cmethod)->method_inst) {
8023                         mono_class_vtable (cfg->domain, cmethod->klass);
8024                         CHECK_TYPELOAD (cmethod->klass);
8025
8026                         vtable_arg = emit_get_rgctx_method (cfg, context_used,
8027                                                                                                 cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
8028                 } else {
8029                         if (context_used) {
8030                                 vtable_arg = emit_get_rgctx_klass (cfg, context_used,
8031                                                                                                    cmethod->klass, MONO_RGCTX_INFO_VTABLE);
8032                         } else {
8033                                 MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
8034
8035                                 CHECK_TYPELOAD (cmethod->klass);
8036                                 EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
8037                         }
8038                 }
8039         }
8040
8041         /* Avoid virtual calls to ctors if possible */
8042         if (mono_class_is_marshalbyref (cmethod->klass))
8043                 callvirt_this_arg = sp [0];
8044
8045         if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8046                 g_assert (MONO_TYPE_IS_VOID (fsig->ret));
8047                 CHECK_CFG_EXCEPTION;
8048         } else if ((cfg->opt & MONO_OPT_INLINE) && cmethod && !context_used && !vtable_arg &&
8049                            mono_method_check_inlining (cfg, cmethod) &&
8050                            !mono_class_is_subclass_of (cmethod->klass, mono_defaults.exception_class, FALSE)) {
8051                 int costs;
8052
8053                 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, FALSE))) {
8054                         cfg->real_offset += 5;
8055
8056                         *inline_costs += costs - 5;
8057                 } else {
8058                         INLINE_FAILURE ("inline failure");
8059                         // FIXME-VT: Clean this up
8060                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
8061                                 GSHAREDVT_FAILURE(*ip);
8062                         mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, callvirt_this_arg, NULL, NULL);
8063                 }
8064         } else if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
8065                 MonoInst *addr;
8066
8067                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE);
8068
8069                 if (cfg->llvm_only) {
8070                         // FIXME: Avoid initializing vtable_arg
8071                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8072                 } else {
8073                         mono_emit_calli (cfg, fsig, sp, addr, NULL, vtable_arg);
8074                 }
8075         } else if (context_used &&
8076                            ((!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
8077                                  !mono_class_generic_sharing_enabled (cmethod->klass)) || cfg->gsharedvt)) {
8078                 MonoInst *cmethod_addr;
8079
8080                 /* Generic calls made out of gsharedvt methods cannot be patched, so use an indirect call */
8081
8082                 if (cfg->llvm_only) {
8083                         MonoInst *addr = emit_get_rgctx_method (cfg, context_used, cmethod,
8084                                                                                                         MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8085                         emit_llvmonly_calli (cfg, fsig, sp, addr);
8086                 } else {
8087                         cmethod_addr = emit_get_rgctx_method (cfg, context_used,
8088                                                                                                   cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
8089
8090                         mono_emit_calli (cfg, fsig, sp, cmethod_addr, NULL, vtable_arg);
8091                 }
8092         } else {
8093                 INLINE_FAILURE ("ctor call");
8094                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp,
8095                                                                                   callvirt_this_arg, NULL, vtable_arg);
8096         }
8097  exception_exit:
8098         return;
8099 }
8100
8101 static void
8102 emit_setret (MonoCompile *cfg, MonoInst *val)
8103 {
8104         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (cfg->method)->ret);
8105         MonoInst *ins;
8106
8107         if (mini_type_to_stind (cfg, ret_type) == CEE_STOBJ) {
8108                 MonoInst *ret_addr;
8109
8110                 if (!cfg->vret_addr) {
8111                         EMIT_NEW_VARSTORE (cfg, ins, cfg->ret, ret_type, val);
8112                 } else {
8113                         EMIT_NEW_RETLOADA (cfg, ret_addr);
8114
8115                         EMIT_NEW_STORE_MEMBASE (cfg, ins, OP_STOREV_MEMBASE, ret_addr->dreg, 0, val->dreg);
8116                         ins->klass = mono_class_from_mono_type (ret_type);
8117                 }
8118         } else {
8119 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
8120                 if (COMPILE_SOFT_FLOAT (cfg) && !ret_type->byref && ret_type->type == MONO_TYPE_R4) {
8121                         MonoInst *iargs [1];
8122                         MonoInst *conv;
8123
8124                         iargs [0] = val;
8125                         conv = mono_emit_jit_icall (cfg, mono_fload_r4_arg, iargs);
8126                         mono_arch_emit_setret (cfg, cfg->method, conv);
8127                 } else {
8128                         mono_arch_emit_setret (cfg, cfg->method, val);
8129                 }
8130 #else
8131                 mono_arch_emit_setret (cfg, cfg->method, val);
8132 #endif
8133         }
8134 }
8135
8136 /*
8137  * mono_method_to_ir:
8138  *
8139  *   Translate the .net IL into linear IR.
8140  */
8141 int
8142 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
8143                    MonoInst *return_var, MonoInst **inline_args,
8144                    guint inline_offset, gboolean is_virtual_call)
8145 {
8146         MonoError error;
8147         MonoInst *ins, **sp, **stack_start;
8148         MonoBasicBlock *tblock = NULL, *init_localsbb = NULL;
8149         MonoSimpleBasicBlock *bb = NULL, *original_bb = NULL;
8150         MonoMethod *cmethod, *method_definition;
8151         MonoInst **arg_array;
8152         MonoMethodHeader *header;
8153         MonoImage *image;
8154         guint32 token, ins_flag;
8155         MonoClass *klass;
8156         MonoClass *constrained_class = NULL;
8157         unsigned char *ip, *end, *target, *err_pos;
8158         MonoMethodSignature *sig;
8159         MonoGenericContext *generic_context = NULL;
8160         MonoGenericContainer *generic_container = NULL;
8161         MonoType **param_types;
8162         int i, n, start_new_bblock, dreg;
8163         int num_calls = 0, inline_costs = 0;
8164         int breakpoint_id = 0;
8165         guint num_args;
8166         GSList *class_inits = NULL;
8167         gboolean dont_verify, dont_verify_stloc, readonly = FALSE;
8168         int context_used;
8169         gboolean init_locals, seq_points, skip_dead_blocks;
8170         gboolean sym_seq_points = FALSE;
8171         MonoDebugMethodInfo *minfo;
8172         MonoBitSet *seq_point_locs = NULL;
8173         MonoBitSet *seq_point_set_locs = NULL;
8174
8175         cfg->disable_inline = is_jit_optimizer_disabled (method);
8176
8177         /* serialization and xdomain stuff may need access to private fields and methods */
8178         dont_verify = method->klass->image->assembly->corlib_internal? TRUE: FALSE;
8179         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE;
8180         dont_verify |= method->wrapper_type == MONO_WRAPPER_XDOMAIN_DISPATCH;
8181         dont_verify |= method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE; /* bug #77896 */
8182         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP;
8183         dont_verify |= method->wrapper_type == MONO_WRAPPER_COMINTEROP_INVOKE;
8184
8185         /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
8186         dont_verify_stloc = method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE;
8187         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_UNKNOWN;
8188         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED;
8189         dont_verify_stloc |= method->wrapper_type == MONO_WRAPPER_STELEMREF;
8190
8191         image = method->klass->image;
8192         header = mono_method_get_header_checked (method, &cfg->error);
8193         if (!header) {
8194                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
8195                 goto exception_exit;
8196         }
8197         generic_container = mono_method_get_generic_container (method);
8198         sig = mono_method_signature (method);
8199         num_args = sig->hasthis + sig->param_count;
8200         ip = (unsigned char*)header->code;
8201         cfg->cil_start = ip;
8202         end = ip + header->code_size;
8203         cfg->stat_cil_code_size += header->code_size;
8204
8205         seq_points = cfg->gen_seq_points && cfg->method == method;
8206
8207         if (method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
8208                 /* We could hit a seq point before attaching to the JIT (#8338) */
8209                 seq_points = FALSE;
8210         }
8211
8212         if (cfg->gen_sdb_seq_points && cfg->method == method) {
8213                 minfo = mono_debug_lookup_method (method);
8214                 if (minfo) {
8215                         MonoSymSeqPoint *sps;
8216                         int i, n_il_offsets;
8217
8218                         mono_debug_get_seq_points (minfo, NULL, NULL, NULL, &sps, &n_il_offsets);
8219                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8220                         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);
8221                         sym_seq_points = TRUE;
8222                         for (i = 0; i < n_il_offsets; ++i) {
8223                                 if (sps [i].il_offset < header->code_size)
8224                                         mono_bitset_set_fast (seq_point_locs, sps [i].il_offset);
8225                         }
8226                         g_free (sps);
8227                 } else if (!method->wrapper_type && !method->dynamic && mono_debug_image_has_debug_info (method->klass->image)) {
8228                         /* Methods without line number info like auto-generated property accessors */
8229                         seq_point_locs = mono_bitset_mem_new (mono_mempool_alloc0 (cfg->mempool, mono_bitset_alloc_size (header->code_size, 0)), header->code_size, 0);
8230                         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);
8231                         sym_seq_points = TRUE;
8232                 }
8233         }
8234
8235         /*
8236          * Methods without init_locals set could cause asserts in various passes
8237          * (#497220). To work around this, we emit dummy initialization opcodes
8238          * (OP_DUMMY_ICONST etc.) which generate no code. These are only supported
8239          * on some platforms.
8240          */
8241         if ((cfg->opt & MONO_OPT_UNSAFE) && cfg->backend->have_dummy_init)
8242                 init_locals = header->init_locals;
8243         else
8244                 init_locals = TRUE;
8245
8246         method_definition = method;
8247         while (method_definition->is_inflated) {
8248                 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
8249                 method_definition = imethod->declaring;
8250         }
8251
8252         /* SkipVerification is not allowed if core-clr is enabled */
8253         if (!dont_verify && mini_assembly_can_skip_verification (cfg->domain, method)) {
8254                 dont_verify = TRUE;
8255                 dont_verify_stloc = TRUE;
8256         }
8257
8258         if (sig->is_inflated)
8259                 generic_context = mono_method_get_context (method);
8260         else if (generic_container)
8261                 generic_context = &generic_container->context;
8262         cfg->generic_context = generic_context;
8263
8264         if (!cfg->gshared)
8265                 g_assert (!sig->has_type_parameters);
8266
8267         if (sig->generic_param_count && method->wrapper_type == MONO_WRAPPER_NONE) {
8268                 g_assert (method->is_inflated);
8269                 g_assert (mono_method_get_context (method)->method_inst);
8270         }
8271         if (method->is_inflated && mono_method_get_context (method)->method_inst)
8272                 g_assert (sig->generic_param_count);
8273
8274         if (cfg->method == method) {
8275                 cfg->real_offset = 0;
8276         } else {
8277                 cfg->real_offset = inline_offset;
8278         }
8279
8280         cfg->cil_offset_to_bb = (MonoBasicBlock **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
8281         cfg->cil_offset_to_bb_len = header->code_size;
8282
8283         cfg->current_method = method;
8284
8285         if (cfg->verbose_level > 2)
8286                 printf ("method to IR %s\n", mono_method_full_name (method, TRUE));
8287
8288         param_types = (MonoType **)mono_mempool_alloc (cfg->mempool, sizeof (MonoType*) * num_args);
8289         if (sig->hasthis)
8290                 param_types [0] = method->klass->valuetype?&method->klass->this_arg:&method->klass->byval_arg;
8291         for (n = 0; n < sig->param_count; ++n)
8292                 param_types [n + sig->hasthis] = sig->params [n];
8293         cfg->arg_types = param_types;
8294
8295         cfg->dont_inline = g_list_prepend (cfg->dont_inline, method);
8296         if (cfg->method == method) {
8297
8298                 if (cfg->prof_options & MONO_PROFILE_INS_COVERAGE)
8299                         cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, header->code_size);
8300
8301                 /* ENTRY BLOCK */
8302                 NEW_BBLOCK (cfg, start_bblock);
8303                 cfg->bb_entry = start_bblock;
8304                 start_bblock->cil_code = NULL;
8305                 start_bblock->cil_length = 0;
8306
8307                 /* EXIT BLOCK */
8308                 NEW_BBLOCK (cfg, end_bblock);
8309                 cfg->bb_exit = end_bblock;
8310                 end_bblock->cil_code = NULL;
8311                 end_bblock->cil_length = 0;
8312                 end_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
8313                 g_assert (cfg->num_bblocks == 2);
8314
8315                 arg_array = cfg->args;
8316
8317                 if (header->num_clauses) {
8318                         cfg->spvars = g_hash_table_new (NULL, NULL);
8319                         cfg->exvars = g_hash_table_new (NULL, NULL);
8320                 }
8321                 /* handle exception clauses */
8322                 for (i = 0; i < header->num_clauses; ++i) {
8323                         MonoBasicBlock *try_bb;
8324                         MonoExceptionClause *clause = &header->clauses [i];
8325                         GET_BBLOCK (cfg, try_bb, ip + clause->try_offset);
8326
8327                         try_bb->real_offset = clause->try_offset;
8328                         try_bb->try_start = TRUE;
8329                         try_bb->region = ((i + 1) << 8) | clause->flags;
8330                         GET_BBLOCK (cfg, tblock, ip + clause->handler_offset);
8331                         tblock->real_offset = clause->handler_offset;
8332                         tblock->flags |= BB_EXCEPTION_HANDLER;
8333
8334                         /*
8335                          * Linking the try block with the EH block hinders inlining as we won't be able to
8336                          * merge the bblocks from inlining and produce an artificial hole for no good reason.
8337                          */
8338                         if (COMPILE_LLVM (cfg))
8339                                 link_bblock (cfg, try_bb, tblock);
8340
8341                         if (*(ip + clause->handler_offset) == CEE_POP)
8342                                 tblock->flags |= BB_EXCEPTION_DEAD_OBJ;
8343
8344                         if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY ||
8345                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER ||
8346                             clause->flags == MONO_EXCEPTION_CLAUSE_FAULT) {
8347                                 MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8348                                 MONO_ADD_INS (tblock, ins);
8349
8350                                 if (seq_points && clause->flags != MONO_EXCEPTION_CLAUSE_FINALLY && clause->flags != MONO_EXCEPTION_CLAUSE_FILTER) {
8351                                         /* finally clauses already have a seq point */
8352                                         /* seq points for filter clauses are emitted below */
8353                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8354                                         MONO_ADD_INS (tblock, ins);
8355                                 }
8356
8357                                 /* todo: is a fault block unsafe to optimize? */
8358                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
8359                                         tblock->flags |= BB_EXCEPTION_UNSAFE;
8360                         }
8361
8362                         /*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);
8363                           while (p < end) {
8364                           printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
8365                           }*/
8366                         /* catch and filter blocks get the exception object on the stack */
8367                         if (clause->flags == MONO_EXCEPTION_CLAUSE_NONE ||
8368                             clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8369
8370                                 /* mostly like handle_stack_args (), but just sets the input args */
8371                                 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
8372                                 tblock->in_scount = 1;
8373                                 tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8374                                 tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8375
8376                                 cfg->cbb = tblock;
8377
8378 #ifdef MONO_CONTEXT_SET_LLVM_EXC_REG
8379                                 /* The EH code passes in the exception in a register to both JITted and LLVM compiled code */
8380                                 if (!cfg->compile_llvm) {
8381                                         MONO_INST_NEW (cfg, ins, OP_GET_EX_OBJ);
8382                                         ins->dreg = tblock->in_stack [0]->dreg;
8383                                         MONO_ADD_INS (tblock, ins);
8384                                 }
8385 #else
8386                                 MonoInst *dummy_use;
8387
8388                                 /*
8389                                  * Add a dummy use for the exvar so its liveness info will be
8390                                  * correct.
8391                                  */
8392                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, tblock->in_stack [0]);
8393 #endif
8394
8395                                 if (seq_points && clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8396                                         NEW_SEQ_POINT (cfg, ins, clause->handler_offset, TRUE);
8397                                         MONO_ADD_INS (tblock, ins);
8398                                 }
8399
8400                                 if (clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
8401                                         GET_BBLOCK (cfg, tblock, ip + clause->data.filter_offset);
8402                                         tblock->flags |= BB_EXCEPTION_HANDLER;
8403                                         tblock->real_offset = clause->data.filter_offset;
8404                                         tblock->in_scount = 1;
8405                                         tblock->in_stack = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*));
8406                                         /* The filter block shares the exvar with the handler block */
8407                                         tblock->in_stack [0] = mono_create_exvar_for_offset (cfg, clause->handler_offset);
8408                                         MONO_INST_NEW (cfg, ins, OP_START_HANDLER);
8409                                         MONO_ADD_INS (tblock, ins);
8410                                 }
8411                         }
8412
8413                         if (clause->flags != MONO_EXCEPTION_CLAUSE_FILTER &&
8414                                         clause->data.catch_class &&
8415                                         cfg->gshared &&
8416                                         mono_class_check_context_used (clause->data.catch_class)) {
8417                                 /*
8418                                  * In shared generic code with catch
8419                                  * clauses containing type variables
8420                                  * the exception handling code has to
8421                                  * be able to get to the rgctx.
8422                                  * Therefore we have to make sure that
8423                                  * the vtable/mrgctx argument (for
8424                                  * static or generic methods) or the
8425                                  * "this" argument (for non-static
8426                                  * methods) are live.
8427                                  */
8428                                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8429                                                 mini_method_get_context (method)->method_inst ||
8430                                                 method->klass->valuetype) {
8431                                         mono_get_vtable_var (cfg);
8432                                 } else {
8433                                         MonoInst *dummy_use;
8434
8435                                         EMIT_NEW_DUMMY_USE (cfg, dummy_use, arg_array [0]);
8436                                 }
8437                         }
8438                 }
8439         } else {
8440                 arg_array = (MonoInst **) alloca (sizeof (MonoInst *) * num_args);
8441                 cfg->cbb = start_bblock;
8442                 cfg->args = arg_array;
8443                 mono_save_args (cfg, sig, inline_args);
8444         }
8445
8446         /* FIRST CODE BLOCK */
8447         NEW_BBLOCK (cfg, tblock);
8448         tblock->cil_code = ip;
8449         cfg->cbb = tblock;
8450         cfg->ip = ip;
8451
8452         ADD_BBLOCK (cfg, tblock);
8453
8454         if (cfg->method == method) {
8455                 breakpoint_id = mono_debugger_method_has_breakpoint (method);
8456                 if (breakpoint_id) {
8457                         MONO_INST_NEW (cfg, ins, OP_BREAK);
8458                         MONO_ADD_INS (cfg->cbb, ins);
8459                 }
8460         }
8461
8462         /* we use a separate basic block for the initialization code */
8463         NEW_BBLOCK (cfg, init_localsbb);
8464         cfg->bb_init = init_localsbb;
8465         init_localsbb->real_offset = cfg->real_offset;
8466         start_bblock->next_bb = init_localsbb;
8467         init_localsbb->next_bb = cfg->cbb;
8468         link_bblock (cfg, start_bblock, init_localsbb);
8469         link_bblock (cfg, init_localsbb, cfg->cbb);
8470
8471         cfg->cbb = init_localsbb;
8472
8473         if (cfg->gsharedvt && cfg->method == method) {
8474                 MonoGSharedVtMethodInfo *info;
8475                 MonoInst *var, *locals_var;
8476                 int dreg;
8477
8478                 info = (MonoGSharedVtMethodInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoGSharedVtMethodInfo));
8479                 info->method = cfg->method;
8480                 info->count_entries = 16;
8481                 info->entries = (MonoRuntimeGenericContextInfoTemplate *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoRuntimeGenericContextInfoTemplate) * info->count_entries);
8482                 cfg->gsharedvt_info = info;
8483
8484                 var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8485                 /* prevent it from being register allocated */
8486                 //var->flags |= MONO_INST_VOLATILE;
8487                 cfg->gsharedvt_info_var = var;
8488
8489                 ins = emit_get_rgctx_gsharedvt_method (cfg, mini_method_check_context_used (cfg, method), method, info);
8490                 MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, var->dreg, ins->dreg);
8491
8492                 /* Allocate locals */
8493                 locals_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
8494                 /* prevent it from being register allocated */
8495                 //locals_var->flags |= MONO_INST_VOLATILE;
8496                 cfg->gsharedvt_locals_var = locals_var;
8497
8498                 dreg = alloc_ireg (cfg);
8499                 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, dreg, var->dreg, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, locals_size));
8500
8501                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
8502                 ins->dreg = locals_var->dreg;
8503                 ins->sreg1 = dreg;
8504                 MONO_ADD_INS (cfg->cbb, ins);
8505                 cfg->gsharedvt_locals_var_ins = ins;
8506
8507                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
8508                 /*
8509                 if (init_locals)
8510                         ins->flags |= MONO_INST_INIT;
8511                 */
8512         }
8513
8514         if (mono_security_core_clr_enabled ()) {
8515                 /* check if this is native code, e.g. an icall or a p/invoke */
8516                 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
8517                         MonoMethod *wrapped = mono_marshal_method_from_wrapper (method);
8518                         if (wrapped) {
8519                                 gboolean pinvk = (wrapped->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL);
8520                                 gboolean icall = (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL);
8521
8522                                 /* if this ia a native call then it can only be JITted from platform code */
8523                                 if ((icall || pinvk) && method->klass && method->klass->image) {
8524                                         if (!mono_security_core_clr_is_platform_image (method->klass->image)) {
8525                                                 MonoException *ex = icall ? mono_get_exception_security () :
8526                                                         mono_get_exception_method_access ();
8527                                                 emit_throw_exception (cfg, ex);
8528                                         }
8529                                 }
8530                         }
8531                 }
8532         }
8533
8534         CHECK_CFG_EXCEPTION;
8535
8536         if (header->code_size == 0)
8537                 UNVERIFIED;
8538
8539         if (get_basic_blocks (cfg, header, cfg->real_offset, ip, end, &err_pos)) {
8540                 ip = err_pos;
8541                 UNVERIFIED;
8542         }
8543
8544         if (cfg->method == method)
8545                 mono_debug_init_method (cfg, cfg->cbb, breakpoint_id);
8546
8547         for (n = 0; n < header->num_locals; ++n) {
8548                 if (header->locals [n]->type == MONO_TYPE_VOID && !header->locals [n]->byref)
8549                         UNVERIFIED;
8550         }
8551         class_inits = NULL;
8552
8553         /* We force the vtable variable here for all shared methods
8554            for the possibility that they might show up in a stack
8555            trace where their exact instantiation is needed. */
8556         if (cfg->gshared && method == cfg->method) {
8557                 if ((method->flags & METHOD_ATTRIBUTE_STATIC) ||
8558                                 mini_method_get_context (method)->method_inst ||
8559                                 method->klass->valuetype) {
8560                         mono_get_vtable_var (cfg);
8561                 } else {
8562                         /* FIXME: Is there a better way to do this?
8563                            We need the variable live for the duration
8564                            of the whole method. */
8565                         cfg->args [0]->flags |= MONO_INST_VOLATILE;
8566                 }
8567         }
8568
8569         /* add a check for this != NULL to inlined methods */
8570         if (is_virtual_call) {
8571                 MonoInst *arg_ins;
8572
8573                 NEW_ARGLOAD (cfg, arg_ins, 0);
8574                 MONO_ADD_INS (cfg->cbb, arg_ins);
8575                 MONO_EMIT_NEW_CHECK_THIS (cfg, arg_ins->dreg);
8576         }
8577
8578         skip_dead_blocks = !dont_verify;
8579         if (skip_dead_blocks) {
8580                 original_bb = bb = mono_basic_block_split (method, &cfg->error);
8581                 CHECK_CFG_ERROR;
8582                 g_assert (bb);
8583         }
8584
8585         /* we use a spare stack slot in SWITCH and NEWOBJ and others */
8586         stack_start = sp = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
8587
8588         ins_flag = 0;
8589         start_new_bblock = 0;
8590         while (ip < end) {
8591                 if (cfg->method == method)
8592                         cfg->real_offset = ip - header->code;
8593                 else
8594                         cfg->real_offset = inline_offset;
8595                 cfg->ip = ip;
8596
8597                 context_used = 0;
8598
8599                 if (start_new_bblock) {
8600                         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
8601                         if (start_new_bblock == 2) {
8602                                 g_assert (ip == tblock->cil_code);
8603                         } else {
8604                                 GET_BBLOCK (cfg, tblock, ip);
8605                         }
8606                         cfg->cbb->next_bb = tblock;
8607                         cfg->cbb = tblock;
8608                         start_new_bblock = 0;
8609                         for (i = 0; i < cfg->cbb->in_scount; ++i) {
8610                                 if (cfg->verbose_level > 3)
8611                                         printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8612                                 EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8613                                 *sp++ = ins;
8614                         }
8615                         if (class_inits)
8616                                 g_slist_free (class_inits);
8617                         class_inits = NULL;
8618                 } else {
8619                         if ((tblock = cfg->cil_offset_to_bb [ip - cfg->cil_start]) && (tblock != cfg->cbb)) {
8620                                 link_bblock (cfg, cfg->cbb, tblock);
8621                                 if (sp != stack_start) {
8622                                         handle_stack_args (cfg, stack_start, sp - stack_start);
8623                                         sp = stack_start;
8624                                         CHECK_UNVERIFIABLE (cfg);
8625                                 }
8626                                 cfg->cbb->next_bb = tblock;
8627                                 cfg->cbb = tblock;
8628                                 for (i = 0; i < cfg->cbb->in_scount; ++i) {
8629                                         if (cfg->verbose_level > 3)
8630                                                 printf ("loading %d from temp %d\n", i, (int)cfg->cbb->in_stack [i]->inst_c0);
8631                                         EMIT_NEW_TEMPLOAD (cfg, ins, cfg->cbb->in_stack [i]->inst_c0);
8632                                         *sp++ = ins;
8633                                 }
8634                                 g_slist_free (class_inits);
8635                                 class_inits = NULL;
8636                         }
8637                 }
8638
8639                 if (skip_dead_blocks) {
8640                         int ip_offset = ip - header->code;
8641
8642                         if (ip_offset == bb->end)
8643                                 bb = bb->next;
8644
8645                         if (bb->dead) {
8646                                 int op_size = mono_opcode_size (ip, end);
8647                                 g_assert (op_size > 0); /*The BB formation pass must catch all bad ops*/
8648
8649                                 if (cfg->verbose_level > 3) printf ("SKIPPING DEAD OP at %x\n", ip_offset);
8650
8651                                 if (ip_offset + op_size == bb->end) {
8652                                         MONO_INST_NEW (cfg, ins, OP_NOP);
8653                                         MONO_ADD_INS (cfg->cbb, ins);
8654                                         start_new_bblock = 1;
8655                                 }
8656
8657                                 ip += op_size;
8658                                 continue;
8659                         }
8660                 }
8661                 /*
8662                  * Sequence points are points where the debugger can place a breakpoint.
8663                  * Currently, we generate these automatically at points where the IL
8664                  * stack is empty.
8665                  */
8666                 if (seq_points && ((!sym_seq_points && (sp == stack_start)) || (sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code)))) {
8667                         /*
8668                          * Make methods interruptable at the beginning, and at the targets of
8669                          * backward branches.
8670                          * Also, do this at the start of every bblock in methods with clauses too,
8671                          * to be able to handle instructions with inprecise control flow like
8672                          * throw/endfinally.
8673                          * Backward branches are handled at the end of method-to-ir ().
8674                          */
8675                         gboolean intr_loc = ip == header->code || (!cfg->cbb->last_ins && cfg->header->num_clauses);
8676                         gboolean sym_seq_point = sym_seq_points && mono_bitset_test_fast (seq_point_locs, ip - header->code);
8677
8678                         /* Avoid sequence points on empty IL like .volatile */
8679                         // FIXME: Enable this
8680                         //if (!(cfg->cbb->last_ins && cfg->cbb->last_ins->opcode == OP_SEQ_POINT)) {
8681                         NEW_SEQ_POINT (cfg, ins, ip - header->code, intr_loc);
8682                         if ((sp != stack_start) && !sym_seq_point)
8683                                 ins->flags |= MONO_INST_NONEMPTY_STACK;
8684                         MONO_ADD_INS (cfg->cbb, ins);
8685
8686                         if (sym_seq_points)
8687                                 mono_bitset_set_fast (seq_point_set_locs, ip - header->code);
8688                 }
8689
8690                 cfg->cbb->real_offset = cfg->real_offset;
8691
8692                 if ((cfg->method == method) && cfg->coverage_info) {
8693                         guint32 cil_offset = ip - header->code;
8694                         cfg->coverage_info->data [cil_offset].cil_code = ip;
8695
8696                         /* TODO: Use an increment here */
8697 #if defined(TARGET_X86)
8698                         MONO_INST_NEW (cfg, ins, OP_STORE_MEM_IMM);
8699                         ins->inst_p0 = &(cfg->coverage_info->data [cil_offset].count);
8700                         ins->inst_imm = 1;
8701                         MONO_ADD_INS (cfg->cbb, ins);
8702 #else
8703                         EMIT_NEW_PCONST (cfg, ins, &(cfg->coverage_info->data [cil_offset].count));
8704                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, ins->dreg, 0, 1);
8705 #endif
8706                 }
8707
8708                 if (cfg->verbose_level > 3)
8709                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8710
8711                 switch (*ip) {
8712                 case CEE_NOP:
8713                         if (seq_points && !sym_seq_points && sp != stack_start) {
8714                                 /*
8715                                  * The C# compiler uses these nops to notify the JIT that it should
8716                                  * insert seq points.
8717                                  */
8718                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, FALSE);
8719                                 MONO_ADD_INS (cfg->cbb, ins);
8720                         }
8721                         if (cfg->keep_cil_nops)
8722                                 MONO_INST_NEW (cfg, ins, OP_HARD_NOP);
8723                         else
8724                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8725                         ip++;
8726                         MONO_ADD_INS (cfg->cbb, ins);
8727                         break;
8728                 case CEE_BREAK:
8729                         if (should_insert_brekpoint (cfg->method)) {
8730                                 ins = mono_emit_jit_icall (cfg, mono_debugger_agent_user_break, NULL);
8731                         } else {
8732                                 MONO_INST_NEW (cfg, ins, OP_NOP);
8733                         }
8734                         ip++;
8735                         MONO_ADD_INS (cfg->cbb, ins);
8736                         break;
8737                 case CEE_LDARG_0:
8738                 case CEE_LDARG_1:
8739                 case CEE_LDARG_2:
8740                 case CEE_LDARG_3:
8741                         CHECK_STACK_OVF (1);
8742                         n = (*ip)-CEE_LDARG_0;
8743                         CHECK_ARG (n);
8744                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8745                         ip++;
8746                         *sp++ = ins;
8747                         break;
8748                 case CEE_LDLOC_0:
8749                 case CEE_LDLOC_1:
8750                 case CEE_LDLOC_2:
8751                 case CEE_LDLOC_3:
8752                         CHECK_STACK_OVF (1);
8753                         n = (*ip)-CEE_LDLOC_0;
8754                         CHECK_LOCAL (n);
8755                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8756                         ip++;
8757                         *sp++ = ins;
8758                         break;
8759                 case CEE_STLOC_0:
8760                 case CEE_STLOC_1:
8761                 case CEE_STLOC_2:
8762                 case CEE_STLOC_3: {
8763                         CHECK_STACK (1);
8764                         n = (*ip)-CEE_STLOC_0;
8765                         CHECK_LOCAL (n);
8766                         --sp;
8767                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
8768                                 UNVERIFIED;
8769                         emit_stloc_ir (cfg, sp, header, n);
8770                         ++ip;
8771                         inline_costs += 1;
8772                         break;
8773                         }
8774                 case CEE_LDARG_S:
8775                         CHECK_OPSIZE (2);
8776                         CHECK_STACK_OVF (1);
8777                         n = ip [1];
8778                         CHECK_ARG (n);
8779                         EMIT_NEW_ARGLOAD (cfg, ins, n);
8780                         *sp++ = ins;
8781                         ip += 2;
8782                         break;
8783                 case CEE_LDARGA_S:
8784                         CHECK_OPSIZE (2);
8785                         CHECK_STACK_OVF (1);
8786                         n = ip [1];
8787                         CHECK_ARG (n);
8788                         NEW_ARGLOADA (cfg, ins, n);
8789                         MONO_ADD_INS (cfg->cbb, ins);
8790                         *sp++ = ins;
8791                         ip += 2;
8792                         break;
8793                 case CEE_STARG_S:
8794                         CHECK_OPSIZE (2);
8795                         CHECK_STACK (1);
8796                         --sp;
8797                         n = ip [1];
8798                         CHECK_ARG (n);
8799                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [ip [1]], *sp))
8800                                 UNVERIFIED;
8801                         EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
8802                         ip += 2;
8803                         break;
8804                 case CEE_LDLOC_S:
8805                         CHECK_OPSIZE (2);
8806                         CHECK_STACK_OVF (1);
8807                         n = ip [1];
8808                         CHECK_LOCAL (n);
8809                         EMIT_NEW_LOCLOAD (cfg, ins, n);
8810                         *sp++ = ins;
8811                         ip += 2;
8812                         break;
8813                 case CEE_LDLOCA_S: {
8814                         unsigned char *tmp_ip;
8815                         CHECK_OPSIZE (2);
8816                         CHECK_STACK_OVF (1);
8817                         CHECK_LOCAL (ip [1]);
8818
8819                         if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 1))) {
8820                                 ip = tmp_ip;
8821                                 inline_costs += 1;
8822                                 break;
8823                         }
8824
8825                         EMIT_NEW_LOCLOADA (cfg, ins, ip [1]);
8826                         *sp++ = ins;
8827                         ip += 2;
8828                         break;
8829                 }
8830                 case CEE_STLOC_S:
8831                         CHECK_OPSIZE (2);
8832                         CHECK_STACK (1);
8833                         --sp;
8834                         CHECK_LOCAL (ip [1]);
8835                         if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [ip [1]], *sp))
8836                                 UNVERIFIED;
8837                         emit_stloc_ir (cfg, sp, header, ip [1]);
8838                         ip += 2;
8839                         inline_costs += 1;
8840                         break;
8841                 case CEE_LDNULL:
8842                         CHECK_STACK_OVF (1);
8843                         EMIT_NEW_PCONST (cfg, ins, NULL);
8844                         ins->type = STACK_OBJ;
8845                         ++ip;
8846                         *sp++ = ins;
8847                         break;
8848                 case CEE_LDC_I4_M1:
8849                         CHECK_STACK_OVF (1);
8850                         EMIT_NEW_ICONST (cfg, ins, -1);
8851                         ++ip;
8852                         *sp++ = ins;
8853                         break;
8854                 case CEE_LDC_I4_0:
8855                 case CEE_LDC_I4_1:
8856                 case CEE_LDC_I4_2:
8857                 case CEE_LDC_I4_3:
8858                 case CEE_LDC_I4_4:
8859                 case CEE_LDC_I4_5:
8860                 case CEE_LDC_I4_6:
8861                 case CEE_LDC_I4_7:
8862                 case CEE_LDC_I4_8:
8863                         CHECK_STACK_OVF (1);
8864                         EMIT_NEW_ICONST (cfg, ins, (*ip) - CEE_LDC_I4_0);
8865                         ++ip;
8866                         *sp++ = ins;
8867                         break;
8868                 case CEE_LDC_I4_S:
8869                         CHECK_OPSIZE (2);
8870                         CHECK_STACK_OVF (1);
8871                         ++ip;
8872                         EMIT_NEW_ICONST (cfg, ins, *((signed char*)ip));
8873                         ++ip;
8874                         *sp++ = ins;
8875                         break;
8876                 case CEE_LDC_I4:
8877                         CHECK_OPSIZE (5);
8878                         CHECK_STACK_OVF (1);
8879                         EMIT_NEW_ICONST (cfg, ins, (gint32)read32 (ip + 1));
8880                         ip += 5;
8881                         *sp++ = ins;
8882                         break;
8883                 case CEE_LDC_I8:
8884                         CHECK_OPSIZE (9);
8885                         CHECK_STACK_OVF (1);
8886                         MONO_INST_NEW (cfg, ins, OP_I8CONST);
8887                         ins->type = STACK_I8;
8888                         ins->dreg = alloc_dreg (cfg, STACK_I8);
8889                         ++ip;
8890                         ins->inst_l = (gint64)read64 (ip);
8891                         MONO_ADD_INS (cfg->cbb, ins);
8892                         ip += 8;
8893                         *sp++ = ins;
8894                         break;
8895                 case CEE_LDC_R4: {
8896                         float *f;
8897                         gboolean use_aotconst = FALSE;
8898
8899 #ifdef TARGET_POWERPC
8900                         /* FIXME: Clean this up */
8901                         if (cfg->compile_aot)
8902                                 use_aotconst = TRUE;
8903 #endif
8904
8905                         /* FIXME: we should really allocate this only late in the compilation process */
8906                         f = (float *)mono_domain_alloc (cfg->domain, sizeof (float));
8907                         CHECK_OPSIZE (5);
8908                         CHECK_STACK_OVF (1);
8909
8910                         if (use_aotconst) {
8911                                 MonoInst *cons;
8912                                 int dreg;
8913
8914                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R4, f);
8915
8916                                 dreg = alloc_freg (cfg);
8917                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR4_MEMBASE, dreg, cons->dreg, 0);
8918                                 ins->type = cfg->r4_stack_type;
8919                         } else {
8920                                 MONO_INST_NEW (cfg, ins, OP_R4CONST);
8921                                 ins->type = cfg->r4_stack_type;
8922                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8923                                 ins->inst_p0 = f;
8924                                 MONO_ADD_INS (cfg->cbb, ins);
8925                         }
8926                         ++ip;
8927                         readr4 (ip, f);
8928                         ip += 4;
8929                         *sp++ = ins;
8930                         break;
8931                 }
8932                 case CEE_LDC_R8: {
8933                         double *d;
8934                         gboolean use_aotconst = FALSE;
8935
8936 #ifdef TARGET_POWERPC
8937                         /* FIXME: Clean this up */
8938                         if (cfg->compile_aot)
8939                                 use_aotconst = TRUE;
8940 #endif
8941
8942                         /* FIXME: we should really allocate this only late in the compilation process */
8943                         d = (double *)mono_domain_alloc (cfg->domain, sizeof (double));
8944                         CHECK_OPSIZE (9);
8945                         CHECK_STACK_OVF (1);
8946
8947                         if (use_aotconst) {
8948                                 MonoInst *cons;
8949                                 int dreg;
8950
8951                                 EMIT_NEW_AOTCONST (cfg, cons, MONO_PATCH_INFO_R8, d);
8952
8953                                 dreg = alloc_freg (cfg);
8954                                 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOADR8_MEMBASE, dreg, cons->dreg, 0);
8955                                 ins->type = STACK_R8;
8956                         } else {
8957                                 MONO_INST_NEW (cfg, ins, OP_R8CONST);
8958                                 ins->type = STACK_R8;
8959                                 ins->dreg = alloc_dreg (cfg, STACK_R8);
8960                                 ins->inst_p0 = d;
8961                                 MONO_ADD_INS (cfg->cbb, ins);
8962                         }
8963                         ++ip;
8964                         readr8 (ip, d);
8965                         ip += 8;
8966                         *sp++ = ins;
8967                         break;
8968                 }
8969                 case CEE_DUP: {
8970                         MonoInst *temp, *store;
8971                         CHECK_STACK (1);
8972                         CHECK_STACK_OVF (1);
8973                         sp--;
8974                         ins = *sp;
8975
8976                         temp = mono_compile_create_var (cfg, type_from_stack_type (ins), OP_LOCAL);
8977                         EMIT_NEW_TEMPSTORE (cfg, store, temp->inst_c0, ins);
8978
8979                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8980                         *sp++ = ins;
8981
8982                         EMIT_NEW_TEMPLOAD (cfg, ins, temp->inst_c0);
8983                         *sp++ = ins;
8984
8985                         ++ip;
8986                         inline_costs += 2;
8987                         break;
8988                 }
8989                 case CEE_POP:
8990                         CHECK_STACK (1);
8991                         ip++;
8992                         --sp;
8993
8994 #ifdef TARGET_X86
8995                         if (sp [0]->type == STACK_R8)
8996                                 /* we need to pop the value from the x86 FP stack */
8997                                 MONO_EMIT_NEW_UNALU (cfg, OP_X86_FPOP, -1, sp [0]->dreg);
8998 #endif
8999                         break;
9000                 case CEE_JMP: {
9001                         MonoCallInst *call;
9002                         MonoMethodSignature *fsig;
9003                         int i, n;
9004
9005                         INLINE_FAILURE ("jmp");
9006                         GSHAREDVT_FAILURE (*ip);
9007
9008                         CHECK_OPSIZE (5);
9009                         if (stack_start != sp)
9010                                 UNVERIFIED;
9011                         token = read32 (ip + 1);
9012                         /* FIXME: check the signature matches */
9013                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9014                         CHECK_CFG_ERROR;
9015
9016                         if (cfg->gshared && mono_method_check_context_used (cmethod))
9017                                 GENERIC_SHARING_FAILURE (CEE_JMP);
9018
9019                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9020
9021                         fsig = mono_method_signature (cmethod);
9022                         n = fsig->param_count + fsig->hasthis;
9023                         if (cfg->llvm_only) {
9024                                 MonoInst **args;
9025
9026                                 args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9027                                 for (i = 0; i < n; ++i)
9028                                         EMIT_NEW_ARGLOAD (cfg, args [i], i);
9029                                 ins = mono_emit_method_call_full (cfg, cmethod, fsig, TRUE, args, NULL, NULL, NULL);
9030                                 /*
9031                                  * The code in mono-basic-block.c treats the rest of the code as dead, but we
9032                                  * have to emit a normal return since llvm expects it.
9033                                  */
9034                                 if (cfg->ret)
9035                                         emit_setret (cfg, ins);
9036                                 MONO_INST_NEW (cfg, ins, OP_BR);
9037                                 ins->inst_target_bb = end_bblock;
9038                                 MONO_ADD_INS (cfg->cbb, ins);
9039                                 link_bblock (cfg, cfg->cbb, end_bblock);
9040                                 ip += 5;
9041                                 break;
9042                         } else if (cfg->backend->have_op_tail_call) {
9043                                 /* Handle tail calls similarly to calls */
9044                                 DISABLE_AOT (cfg);
9045
9046                                 MONO_INST_NEW_CALL (cfg, call, OP_TAILCALL);
9047                                 call->method = cmethod;
9048                                 call->tail_call = TRUE;
9049                                 call->signature = mono_method_signature (cmethod);
9050                                 call->args = (MonoInst **)mono_mempool_alloc (cfg->mempool, sizeof (MonoInst*) * n);
9051                                 call->inst.inst_p0 = cmethod;
9052                                 for (i = 0; i < n; ++i)
9053                                         EMIT_NEW_ARGLOAD (cfg, call->args [i], i);
9054
9055                                 mono_arch_emit_call (cfg, call);
9056                                 cfg->param_area = MAX(cfg->param_area, call->stack_usage);
9057                                 MONO_ADD_INS (cfg->cbb, (MonoInst*)call);
9058                         } else {
9059                                 for (i = 0; i < num_args; ++i)
9060                                         /* Prevent arguments from being optimized away */
9061                                         arg_array [i]->flags |= MONO_INST_VOLATILE;
9062
9063                                 MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9064                                 ins = (MonoInst*)call;
9065                                 ins->inst_p0 = cmethod;
9066                                 MONO_ADD_INS (cfg->cbb, ins);
9067                         }
9068
9069                         ip += 5;
9070                         start_new_bblock = 1;
9071                         break;
9072                 }
9073                 case CEE_CALLI: {
9074                         MonoInst *addr;
9075                         MonoMethodSignature *fsig;
9076
9077                         CHECK_OPSIZE (5);
9078                         token = read32 (ip + 1);
9079
9080                         ins = NULL;
9081
9082                         //GSHAREDVT_FAILURE (*ip);
9083                         cmethod = NULL;
9084                         CHECK_STACK (1);
9085                         --sp;
9086                         addr = *sp;
9087                         fsig = mini_get_signature (method, token, generic_context);
9088
9089                         if (method->dynamic && fsig->pinvoke) {
9090                                 MonoInst *args [3];
9091
9092                                 /*
9093                                  * This is a call through a function pointer using a pinvoke
9094                                  * signature. Have to create a wrapper and call that instead.
9095                                  * FIXME: This is very slow, need to create a wrapper at JIT time
9096                                  * instead based on the signature.
9097                                  */
9098                                 EMIT_NEW_IMAGECONST (cfg, args [0], method->klass->image);
9099                                 EMIT_NEW_PCONST (cfg, args [1], fsig);
9100                                 args [2] = addr;
9101                                 addr = mono_emit_jit_icall (cfg, mono_get_native_calli_wrapper, args);
9102                         }
9103
9104                         n = fsig->param_count + fsig->hasthis;
9105
9106                         CHECK_STACK (n);
9107
9108                         //g_assert (!virtual_ || fsig->hasthis);
9109
9110                         sp -= n;
9111
9112                         inline_costs += 10 * num_calls++;
9113
9114                         /*
9115                          * Making generic calls out of gsharedvt methods.
9116                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9117                          * patching gshared method addresses into a gsharedvt method.
9118                          */
9119                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
9120                                 /*
9121                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
9122                                  */
9123                                 MonoInst *callee = addr;
9124
9125                                 if (method->wrapper_type != MONO_WRAPPER_DELEGATE_INVOKE)
9126                                         /* Not tested */
9127                                         GSHAREDVT_FAILURE (*ip);
9128
9129                                 if (cfg->llvm_only)
9130                                         // FIXME:
9131                                         GSHAREDVT_FAILURE (*ip);
9132
9133                                 addr = emit_get_rgctx_sig (cfg, context_used,
9134                                                                                           fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
9135                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
9136                                 goto calli_end;
9137                         }
9138
9139                         /* Prevent inlining of methods with indirect calls */
9140                         INLINE_FAILURE ("indirect call");
9141
9142                         if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST || addr->opcode == OP_GOT_ENTRY) {
9143                                 MonoJumpInfoType info_type;
9144                                 gpointer info_data;
9145
9146                                 /*
9147                                  * Instead of emitting an indirect call, emit a direct call
9148                                  * with the contents of the aotconst as the patch info.
9149                                  */
9150                                 if (addr->opcode == OP_PCONST || addr->opcode == OP_AOTCONST) {
9151                                         info_type = (MonoJumpInfoType)addr->inst_c1;
9152                                         info_data = addr->inst_p0;
9153                                 } else {
9154                                         info_type = (MonoJumpInfoType)addr->inst_right->inst_c1;
9155                                         info_data = addr->inst_right->inst_left;
9156                                 }
9157
9158                                 if (info_type == MONO_PATCH_INFO_ICALL_ADDR || info_type == MONO_PATCH_INFO_JIT_ICALL_ADDR) {
9159                                         ins = (MonoInst*)mono_emit_abs_call (cfg, info_type, info_data, fsig, sp);
9160                                         NULLIFY_INS (addr);
9161                                         goto calli_end;
9162                                 }
9163                         }
9164                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9165
9166                         calli_end:
9167
9168                         /* End of call, INS should contain the result of the call, if any */
9169
9170                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9171                                 g_assert (ins);
9172                                 *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
9173                         }
9174
9175                         CHECK_CFG_EXCEPTION;
9176
9177                         ip += 5;
9178                         ins_flag = 0;
9179                         constrained_class = NULL;
9180                         break;
9181                 }
9182                 case CEE_CALL:
9183                 case CEE_CALLVIRT: {
9184                         MonoInst *addr = NULL;
9185                         MonoMethodSignature *fsig = NULL;
9186                         int array_rank = 0;
9187                         int virtual_ = *ip == CEE_CALLVIRT;
9188                         gboolean pass_imt_from_rgctx = FALSE;
9189                         MonoInst *imt_arg = NULL;
9190                         MonoInst *keep_this_alive = NULL;
9191                         gboolean pass_vtable = FALSE;
9192                         gboolean pass_mrgctx = FALSE;
9193                         MonoInst *vtable_arg = NULL;
9194                         gboolean check_this = FALSE;
9195                         gboolean supported_tail_call = FALSE;
9196                         gboolean tail_call = FALSE;
9197                         gboolean need_seq_point = FALSE;
9198                         guint32 call_opcode = *ip;
9199                         gboolean emit_widen = TRUE;
9200                         gboolean push_res = TRUE;
9201                         gboolean skip_ret = FALSE;
9202                         gboolean delegate_invoke = FALSE;
9203                         gboolean direct_icall = FALSE;
9204                         gboolean constrained_partial_call = FALSE;
9205                         MonoMethod *cil_method;
9206
9207                         CHECK_OPSIZE (5);
9208                         token = read32 (ip + 1);
9209
9210                         ins = NULL;
9211
9212                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
9213                         CHECK_CFG_ERROR;
9214
9215                         cil_method = cmethod;
9216
9217                         if (constrained_class) {
9218                                 if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9219                                         if (!mini_is_gsharedvt_klass (constrained_class)) {
9220                                                 g_assert (!cmethod->klass->valuetype);
9221                                                 if (!mini_type_is_reference (&constrained_class->byval_arg))
9222                                                         constrained_partial_call = TRUE;
9223                                         }
9224                                 }
9225
9226                                 if (method->wrapper_type != MONO_WRAPPER_NONE) {
9227                                         if (cfg->verbose_level > 2)
9228                                                 printf ("DM Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9229                                         if (!((constrained_class->byval_arg.type == MONO_TYPE_VAR ||
9230                                                    constrained_class->byval_arg.type == MONO_TYPE_MVAR) &&
9231                                                   cfg->gshared)) {
9232                                                 cmethod = mono_get_method_constrained_with_method (image, cil_method, constrained_class, generic_context, &cfg->error);
9233                                                 CHECK_CFG_ERROR;
9234                                         }
9235                                 } else {
9236                                         if (cfg->verbose_level > 2)
9237                                                 printf ("Constrained call to %s\n", mono_type_get_full_name (constrained_class));
9238
9239                                         if ((constrained_class->byval_arg.type == MONO_TYPE_VAR || constrained_class->byval_arg.type == MONO_TYPE_MVAR) && cfg->gshared) {
9240                                                 /*
9241                                                  * This is needed since get_method_constrained can't find
9242                                                  * the method in klass representing a type var.
9243                                                  * The type var is guaranteed to be a reference type in this
9244                                                  * case.
9245                                                  */
9246                                                 if (!mini_is_gsharedvt_klass (constrained_class))
9247                                                         g_assert (!cmethod->klass->valuetype);
9248                                         } else {
9249                                                 cmethod = mono_get_method_constrained_checked (image, token, constrained_class, generic_context, &cil_method, &cfg->error);
9250                                                 CHECK_CFG_ERROR;
9251                                         }
9252                                 }
9253                         }
9254
9255                         if (!cmethod || mono_loader_get_last_error ()) {
9256                                 if (mono_loader_get_last_error ()) {
9257                                         mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
9258                                         mono_error_set_from_loader_error (&cfg->error);
9259                                         CHECK_CFG_ERROR;
9260                                 } else {
9261                                         LOAD_ERROR;
9262                                 }
9263                         }
9264                         if (!dont_verify && !cfg->skip_visibility) {
9265                                 MonoMethod *target_method = cil_method;
9266                                 if (method->is_inflated) {
9267                                         target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context), &cfg->error);
9268                                         CHECK_CFG_ERROR;
9269                                 }
9270                                 if (!mono_method_can_access_method (method_definition, target_method) &&
9271                                         !mono_method_can_access_method (method, cil_method))
9272                                         METHOD_ACCESS_FAILURE (method, cil_method);
9273                         }
9274
9275                         if (mono_security_core_clr_enabled ())
9276                                 ensure_method_is_allowed_to_call_method (cfg, method, cil_method);
9277
9278                         if (!virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_ABSTRACT))
9279                                 /* MS.NET seems to silently convert this to a callvirt */
9280                                 virtual_ = 1;
9281
9282                         {
9283                                 /*
9284                                  * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
9285                                  * converts to a callvirt.
9286                                  *
9287                                  * tests/bug-515884.il is an example of this behavior
9288                                  */
9289                                 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
9290                                 const int expected_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL;
9291                                 if (!virtual_ && mono_class_is_marshalbyref (cmethod->klass) && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
9292                                         virtual_ = 1;
9293                         }
9294
9295                         if (!cmethod->klass->inited)
9296                                 if (!mono_class_init (cmethod->klass))
9297                                         TYPE_LOAD_ERROR (cmethod->klass);
9298
9299                         fsig = mono_method_signature (cmethod);
9300                         if (!fsig)
9301                                 LOAD_ERROR;
9302                         if (cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL &&
9303                                 mini_class_is_system_array (cmethod->klass)) {
9304                                 array_rank = cmethod->klass->rank;
9305                         } else if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && icall_is_direct_callable (cfg, cmethod)) {
9306                                 direct_icall = TRUE;
9307                         } else if (fsig->pinvoke) {
9308                                 MonoMethod *wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9309                                 fsig = mono_method_signature (wrapper);
9310                         } else if (constrained_class) {
9311                         } else {
9312                                 fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
9313                                 CHECK_CFG_ERROR;
9314                         }
9315
9316                         if (cfg->llvm_only && !cfg->method->wrapper_type)
9317                                 cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
9318
9319                         /* See code below */
9320                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9321                                 MonoBasicBlock *tbb;
9322
9323                                 GET_BBLOCK (cfg, tbb, ip + 5);
9324                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9325                                         /*
9326                                          * We want to extend the try block to cover the call, but we can't do it if the
9327                                          * call is made directly since its followed by an exception check.
9328                                          */
9329                                         direct_icall = FALSE;
9330                                 }
9331                         }
9332
9333                         mono_save_token_info (cfg, image, token, cil_method);
9334
9335                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip + 5 - header->code)))
9336                                 need_seq_point = TRUE;
9337
9338                         /* Don't support calls made using type arguments for now */
9339                         /*
9340                           if (cfg->gsharedvt) {
9341                           if (mini_is_gsharedvt_signature (fsig))
9342                           GSHAREDVT_FAILURE (*ip);
9343                           }
9344                         */
9345
9346                         if (cmethod->string_ctor && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE)
9347                                 g_assert_not_reached ();
9348
9349                         n = fsig->param_count + fsig->hasthis;
9350
9351                         if (!cfg->gshared && cmethod->klass->generic_container)
9352                                 UNVERIFIED;
9353
9354                         if (!cfg->gshared)
9355                                 g_assert (!mono_method_check_context_used (cmethod));
9356
9357                         CHECK_STACK (n);
9358
9359                         //g_assert (!virtual_ || fsig->hasthis);
9360
9361                         sp -= n;
9362
9363                         /*
9364                          * We have the `constrained.' prefix opcode.
9365                          */
9366                         if (constrained_class) {
9367                                 if (mini_is_gsharedvt_klass (constrained_class)) {
9368                                         if ((cmethod->klass != mono_defaults.object_class) && constrained_class->valuetype && cmethod->klass->valuetype) {
9369                                                 /* The 'Own method' case below */
9370                                         } else if (cmethod->klass->image != mono_defaults.corlib && !(cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !cmethod->klass->valuetype) {
9371                                                 /* 'The type parameter is instantiated as a reference type' case below. */
9372                                         } else {
9373                                                 ins = handle_constrained_gsharedvt_call (cfg, cmethod, fsig, sp, constrained_class, &emit_widen);
9374                                                 CHECK_CFG_EXCEPTION;
9375                                                 g_assert (ins);
9376                                                 goto call_end;
9377                                         }
9378                                 }
9379
9380                                 if (constrained_partial_call) {
9381                                         gboolean need_box = TRUE;
9382
9383                                         /*
9384                                          * The receiver is a valuetype, but the exact type is not known at compile time. This means the
9385                                          * called method is not known at compile time either. The called method could end up being
9386                                          * one of the methods on the parent classes (object/valuetype/enum), in which case we need
9387                                          * to box the receiver.
9388                                          * A simple solution would be to box always and make a normal virtual call, but that would
9389                                          * be bad performance wise.
9390                                          */
9391                                         if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE && cmethod->klass->generic_class) {
9392                                                 /*
9393                                                  * The parent classes implement no generic interfaces, so the called method will be a vtype method, so no boxing neccessary.
9394                                                  */
9395                                                 need_box = FALSE;
9396                                         }
9397
9398                                         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)) {
9399                                                 /* The called method is not virtual, i.e. Object:GetType (), the receiver is a vtype, has to box */
9400                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9401                                                 ins->klass = constrained_class;
9402                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9403                                                 CHECK_CFG_EXCEPTION;
9404                                         } else if (need_box) {
9405                                                 MonoInst *box_type;
9406                                                 MonoBasicBlock *is_ref_bb, *end_bb;
9407                                                 MonoInst *nonbox_call;
9408
9409                                                 /*
9410                                                  * Determine at runtime whenever the called method is defined on object/valuetype/enum, and emit a boxing call
9411                                                  * if needed.
9412                                                  * FIXME: It is possible to inline the called method in a lot of cases, i.e. for T_INT,
9413                                                  * the no-box case goes to a method in Int32, while the box case goes to a method in Enum.
9414                                                  */
9415                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9416
9417                                                 NEW_BBLOCK (cfg, is_ref_bb);
9418                                                 NEW_BBLOCK (cfg, end_bb);
9419
9420                                                 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);
9421                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, box_type->dreg, MONO_GSHAREDVT_BOX_TYPE_REF);
9422                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBEQ, is_ref_bb);
9423
9424                                                 /* Non-ref case */
9425                                                 nonbox_call = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9426
9427                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9428
9429                                                 /* Ref case */
9430                                                 MONO_START_BB (cfg, is_ref_bb);
9431                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9432                                                 ins->klass = constrained_class;
9433                                                 sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9434                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9435
9436                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
9437
9438                                                 MONO_START_BB (cfg, end_bb);
9439                                                 cfg->cbb = end_bb;
9440
9441                                                 nonbox_call->dreg = ins->dreg;
9442                                                 goto call_end;
9443                                         } else {
9444                                                 g_assert (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE);
9445                                                 addr = emit_get_rgctx_virt_method (cfg, mono_class_check_context_used (constrained_class), constrained_class, cmethod, MONO_RGCTX_INFO_VIRT_METHOD_CODE);
9446                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9447                                                 goto call_end;
9448                                         }
9449                                 } else if (constrained_class->valuetype && (cmethod->klass == mono_defaults.object_class || cmethod->klass == mono_defaults.enum_class->parent || cmethod->klass == mono_defaults.enum_class)) {
9450                                         /*
9451                                          * The type parameter is instantiated as a valuetype,
9452                                          * but that type doesn't override the method we're
9453                                          * calling, so we need to box `this'.
9454                                          */
9455                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9456                                         ins->klass = constrained_class;
9457                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9458                                         CHECK_CFG_EXCEPTION;
9459                                 } else if (!constrained_class->valuetype) {
9460                                         int dreg = alloc_ireg_ref (cfg);
9461
9462                                         /*
9463                                          * The type parameter is instantiated as a reference
9464                                          * type.  We have a managed pointer on the stack, so
9465                                          * we need to dereference it here.
9466                                          */
9467                                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, sp [0]->dreg, 0);
9468                                         ins->type = STACK_OBJ;
9469                                         sp [0] = ins;
9470                                 } else {
9471                                         if (cmethod->klass->valuetype) {
9472                                                 /* Own method */
9473                                         } else {
9474                                                 /* Interface method */
9475                                                 int ioffset, slot;
9476
9477                                                 mono_class_setup_vtable (constrained_class);
9478                                                 CHECK_TYPELOAD (constrained_class);
9479                                                 ioffset = mono_class_interface_offset (constrained_class, cmethod->klass);
9480                                                 if (ioffset == -1)
9481                                                         TYPE_LOAD_ERROR (constrained_class);
9482                                                 slot = mono_method_get_vtable_slot (cmethod);
9483                                                 if (slot == -1)
9484                                                         TYPE_LOAD_ERROR (cmethod->klass);
9485                                                 cmethod = constrained_class->vtable [ioffset + slot];
9486
9487                                                 if (cmethod->klass == mono_defaults.enum_class) {
9488                                                         /* Enum implements some interfaces, so treat this as the first case */
9489                                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &constrained_class->byval_arg, sp [0]->dreg, 0);
9490                                                         ins->klass = constrained_class;
9491                                                         sp [0] = handle_box (cfg, ins, constrained_class, mono_class_check_context_used (constrained_class));
9492                                                         CHECK_CFG_EXCEPTION;
9493                                                 }
9494                                         }
9495                                         virtual_ = 0;
9496                                 }
9497                                 constrained_class = NULL;
9498                         }
9499
9500                         if (check_call_signature (cfg, fsig, sp))
9501                                 UNVERIFIED;
9502
9503                         if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && !strcmp (cmethod->name, "Invoke"))
9504                                 delegate_invoke = TRUE;
9505
9506                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_sharable_method (cfg, cmethod, fsig, sp))) {
9507                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9508                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9509                                         emit_widen = FALSE;
9510                                 }
9511
9512                                 goto call_end;
9513                         }
9514
9515                         /*
9516                          * If the callee is a shared method, then its static cctor
9517                          * might not get called after the call was patched.
9518                          */
9519                         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)) {
9520                                 emit_class_init (cfg, cmethod->klass);
9521                                 CHECK_TYPELOAD (cmethod->klass);
9522                         }
9523
9524                         check_method_sharing (cfg, cmethod, &pass_vtable, &pass_mrgctx);
9525
9526                         if (cfg->gshared) {
9527                                 MonoGenericContext *cmethod_context = mono_method_get_context (cmethod);
9528
9529                                 context_used = mini_method_check_context_used (cfg, cmethod);
9530
9531                                 if (context_used && (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
9532                                         /* Generic method interface
9533                                            calls are resolved via a
9534                                            helper function and don't
9535                                            need an imt. */
9536                                         if (!cmethod_context || !cmethod_context->method_inst)
9537                                                 pass_imt_from_rgctx = TRUE;
9538                                 }
9539
9540                                 /*
9541                                  * If a shared method calls another
9542                                  * shared method then the caller must
9543                                  * have a generic sharing context
9544                                  * because the magic trampoline
9545                                  * requires it.  FIXME: We shouldn't
9546                                  * have to force the vtable/mrgctx
9547                                  * variable here.  Instead there
9548                                  * should be a flag in the cfg to
9549                                  * request a generic sharing context.
9550                                  */
9551                                 if (context_used &&
9552                                                 ((method->flags & METHOD_ATTRIBUTE_STATIC) || method->klass->valuetype))
9553                                         mono_get_vtable_var (cfg);
9554                         }
9555
9556                         if (pass_vtable) {
9557                                 if (context_used) {
9558                                         vtable_arg = emit_get_rgctx_klass (cfg, context_used, cmethod->klass, MONO_RGCTX_INFO_VTABLE);
9559                                 } else {
9560                                         MonoVTable *vtable = mono_class_vtable (cfg->domain, cmethod->klass);
9561
9562                                         CHECK_TYPELOAD (cmethod->klass);
9563                                         EMIT_NEW_VTABLECONST (cfg, vtable_arg, vtable);
9564                                 }
9565                         }
9566
9567                         if (pass_mrgctx) {
9568                                 g_assert (!vtable_arg);
9569
9570                                 if (!cfg->compile_aot) {
9571                                         /*
9572                                          * emit_get_rgctx_method () calls mono_class_vtable () so check
9573                                          * for type load errors before.
9574                                          */
9575                                         mono_class_setup_vtable (cmethod->klass);
9576                                         CHECK_TYPELOAD (cmethod->klass);
9577                                 }
9578
9579                                 vtable_arg = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD_RGCTX);
9580
9581                                 /* !marshalbyref is needed to properly handle generic methods + remoting */
9582                                 if ((!(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
9583                                          MONO_METHOD_IS_FINAL (cmethod)) &&
9584                                         !mono_class_is_marshalbyref (cmethod->klass)) {
9585                                         if (virtual_)
9586                                                 check_this = TRUE;
9587                                         virtual_ = 0;
9588                                 }
9589                         }
9590
9591                         if (pass_imt_from_rgctx) {
9592                                 g_assert (!pass_vtable);
9593
9594                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9595                                         cmethod, MONO_RGCTX_INFO_METHOD);
9596                         }
9597
9598                         if (check_this)
9599                                 MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9600
9601                         /* Calling virtual generic methods */
9602                         if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) &&
9603                             !(MONO_METHOD_IS_FINAL (cmethod) &&
9604                               cmethod->wrapper_type != MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK) &&
9605                             fsig->generic_param_count &&
9606                                 !(cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) &&
9607                                 !cfg->llvm_only) {
9608                                 MonoInst *this_temp, *this_arg_temp, *store;
9609                                 MonoInst *iargs [4];
9610
9611                                 g_assert (fsig->is_inflated);
9612
9613                                 /* Prevent inlining of methods that contain indirect calls */
9614                                 INLINE_FAILURE ("virtual generic call");
9615
9616                                 if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig))
9617                                         GSHAREDVT_FAILURE (*ip);
9618
9619                                 if (cfg->backend->have_generalized_imt_thunk && cfg->backend->gshared_supported && cmethod->wrapper_type == MONO_WRAPPER_NONE) {
9620                                         g_assert (!imt_arg);
9621                                         if (!context_used)
9622                                                 g_assert (cmethod->is_inflated);
9623                                         imt_arg = emit_get_rgctx_method (cfg, context_used,
9624                                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
9625                                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, sp [0], imt_arg, NULL);
9626                                 } else {
9627                                         this_temp = mono_compile_create_var (cfg, type_from_stack_type (sp [0]), OP_LOCAL);
9628                                         NEW_TEMPSTORE (cfg, store, this_temp->inst_c0, sp [0]);
9629                                         MONO_ADD_INS (cfg->cbb, store);
9630
9631                                         /* FIXME: This should be a managed pointer */
9632                                         this_arg_temp = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9633
9634                                         EMIT_NEW_TEMPLOAD (cfg, iargs [0], this_temp->inst_c0);
9635                                         iargs [1] = emit_get_rgctx_method (cfg, context_used,
9636                                                                                                            cmethod, MONO_RGCTX_INFO_METHOD);
9637                                         EMIT_NEW_TEMPLOADA (cfg, iargs [2], this_arg_temp->inst_c0);
9638                                         addr = mono_emit_jit_icall (cfg,
9639                                                                                                 mono_helper_compile_generic_method, iargs);
9640
9641                                         EMIT_NEW_TEMPLOAD (cfg, sp [0], this_arg_temp->inst_c0);
9642
9643                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
9644                                 }
9645
9646                                 goto call_end;
9647                         }
9648
9649                         /*
9650                          * Implement a workaround for the inherent races involved in locking:
9651                          * Monitor.Enter ()
9652                          * try {
9653                          * } finally {
9654                          *    Monitor.Exit ()
9655                          * }
9656                          * If a thread abort happens between the call to Monitor.Enter () and the start of the
9657                          * try block, the Exit () won't be executed, see:
9658                          * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
9659                          * To work around this, we extend such try blocks to include the last x bytes
9660                          * of the Monitor.Enter () call.
9661                          */
9662                         if (cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
9663                                 MonoBasicBlock *tbb;
9664
9665                                 GET_BBLOCK (cfg, tbb, ip + 5);
9666                                 /*
9667                                  * Only extend try blocks with a finally, to avoid catching exceptions thrown
9668                                  * from Monitor.Enter like ArgumentNullException.
9669                                  */
9670                                 if (tbb->try_start && MONO_REGION_FLAGS(tbb->region) == MONO_EXCEPTION_CLAUSE_FINALLY) {
9671                                         /* Mark this bblock as needing to be extended */
9672                                         tbb->extend_try_block = TRUE;
9673                                 }
9674                         }
9675
9676                         /* Conversion to a JIT intrinsic */
9677                         if ((cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
9678                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9679                                         type_to_eval_stack_type ((cfg), fsig->ret, ins);
9680                                         emit_widen = FALSE;
9681                                 }
9682                                 goto call_end;
9683                         }
9684
9685                         /* Inlining */
9686                         if ((cfg->opt & MONO_OPT_INLINE) &&
9687                                 (!virtual_ || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
9688                             mono_method_check_inlining (cfg, cmethod)) {
9689                                 int costs;
9690                                 gboolean always = FALSE;
9691
9692                                 if ((cmethod->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
9693                                         (cmethod->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
9694                                         /* Prevent inlining of methods that call wrappers */
9695                                         INLINE_FAILURE ("wrapper call");
9696                                         cmethod = mono_marshal_get_native_wrapper (cmethod, TRUE, FALSE);
9697                                         always = TRUE;
9698                                 }
9699
9700                                 costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, always);
9701                                 if (costs) {
9702                                         cfg->real_offset += 5;
9703
9704                                         if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9705                                                 /* *sp is already set by inline_method */
9706                                                 sp++;
9707                                                 push_res = FALSE;
9708                                         }
9709
9710                                         inline_costs += costs;
9711
9712                                         goto call_end;
9713                                 }
9714                         }
9715
9716                         /* Tail recursion elimination */
9717                         if ((cfg->opt & MONO_OPT_TAILC) && call_opcode == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
9718                                 gboolean has_vtargs = FALSE;
9719                                 int i;
9720
9721                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9722                                 INLINE_FAILURE ("tail call");
9723
9724                                 /* keep it simple */
9725                                 for (i =  fsig->param_count - 1; i >= 0; i--) {
9726                                         if (MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->params [i]))
9727                                                 has_vtargs = TRUE;
9728                                 }
9729
9730                                 if (!has_vtargs) {
9731                                         for (i = 0; i < n; ++i)
9732                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9733                                         MONO_INST_NEW (cfg, ins, OP_BR);
9734                                         MONO_ADD_INS (cfg->cbb, ins);
9735                                         tblock = start_bblock->out_bb [0];
9736                                         link_bblock (cfg, cfg->cbb, tblock);
9737                                         ins->inst_target_bb = tblock;
9738                                         start_new_bblock = 1;
9739
9740                                         /* skip the CEE_RET, too */
9741                                         if (ip_in_bb (cfg, cfg->cbb, ip + 5))
9742                                                 skip_ret = TRUE;
9743                                         push_res = FALSE;
9744                                         goto call_end;
9745                                 }
9746                         }
9747
9748                         inline_costs += 10 * num_calls++;
9749
9750                         /*
9751                          * Making generic calls out of gsharedvt methods.
9752                          * This needs to be used for all generic calls, not just ones with a gsharedvt signature, to avoid
9753                          * patching gshared method addresses into a gsharedvt method.
9754                          */
9755                         if (cfg->gsharedvt && (mini_is_gsharedvt_signature (fsig) || cmethod->is_inflated || cmethod->klass->generic_class) &&
9756                                 !(cmethod->klass->rank && cmethod->klass->byval_arg.type != MONO_TYPE_SZARRAY) &&
9757                                 (!(cfg->llvm_only && virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)))) {
9758                                 MonoRgctxInfoType info_type;
9759
9760                                 if (virtual_) {
9761                                         //if (cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE)
9762                                                 //GSHAREDVT_FAILURE (*ip);
9763                                         // disable for possible remoting calls
9764                                         if (fsig->hasthis && (mono_class_is_marshalbyref (method->klass) || method->klass == mono_defaults.object_class))
9765                                                 GSHAREDVT_FAILURE (*ip);
9766                                         if (fsig->generic_param_count) {
9767                                                 /* virtual generic call */
9768                                                 g_assert (!imt_arg);
9769                                                 /* Same as the virtual generic case above */
9770                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9771                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9772                                                 /* This is not needed, as the trampoline code will pass one, and it might be passed in the same reg as the imt arg */
9773                                                 vtable_arg = NULL;
9774                                         } else if ((cmethod->klass->flags & TYPE_ATTRIBUTE_INTERFACE) && !imt_arg) {
9775                                                 /* This can happen when we call a fully instantiated iface method */
9776                                                 imt_arg = emit_get_rgctx_method (cfg, context_used,
9777                                                                                                                  cmethod, MONO_RGCTX_INFO_METHOD);
9778                                                 vtable_arg = NULL;
9779                                         }
9780                                 }
9781
9782                                 if ((cmethod->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (cmethod->name, "Invoke")))
9783                                         keep_this_alive = sp [0];
9784
9785                                 if (virtual_ && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))
9786                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE_VIRT;
9787                                 else
9788                                         info_type = MONO_RGCTX_INFO_METHOD_GSHAREDVT_OUT_TRAMPOLINE;
9789                                 addr = emit_get_rgctx_gsharedvt_call (cfg, context_used, fsig, cmethod, info_type);
9790
9791                                 if (cfg->llvm_only) {
9792                                         // FIXME: Avoid initializing vtable_arg
9793                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9794                                 } else {
9795                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9796                                 }
9797                                 goto call_end;
9798                         }
9799
9800                         /* Generic sharing */
9801
9802                         /*
9803                          * Use this if the callee is gsharedvt sharable too, since
9804                          * at runtime we might find an instantiation so the call cannot
9805                          * be patched (the 'no_patch' code path in mini-trampolines.c).
9806                          */
9807                         if (context_used && !imt_arg && !array_rank && !delegate_invoke &&
9808                                 (!mono_method_is_generic_sharable_full (cmethod, TRUE, FALSE, FALSE) ||
9809                                  !mono_class_generic_sharing_enabled (cmethod->klass)) &&
9810                                 (!virtual_ || MONO_METHOD_IS_FINAL (cmethod) ||
9811                                  !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL))) {
9812                                 INLINE_FAILURE ("gshared");
9813
9814                                 g_assert (cfg->gshared && cmethod);
9815                                 g_assert (!addr);
9816
9817                                 /*
9818                                  * We are compiling a call to a
9819                                  * generic method from shared code,
9820                                  * which means that we have to look up
9821                                  * the method in the rgctx and do an
9822                                  * indirect call.
9823                                  */
9824                                 if (fsig->hasthis)
9825                                         MONO_EMIT_NEW_CHECK_THIS (cfg, sp [0]->dreg);
9826
9827                                 if (cfg->llvm_only) {
9828                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig))
9829                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GSHAREDVT_OUT_WRAPPER);
9830                                         else
9831                                                 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9832                                         // FIXME: Avoid initializing imt_arg/vtable_arg
9833                                         ins = emit_llvmonly_calli (cfg, fsig, sp, addr);
9834                                 } else {
9835                                         addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
9836                                         ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, imt_arg, vtable_arg);
9837                                 }
9838                                 goto call_end;
9839                         }
9840
9841                         /* Direct calls to icalls */
9842                         if (direct_icall) {
9843                                 MonoMethod *wrapper;
9844                                 int costs;
9845
9846                                 /* Inline the wrapper */
9847                                 wrapper = mono_marshal_get_native_wrapper (cmethod, TRUE, cfg->compile_aot);
9848
9849                                 costs = inline_method (cfg, wrapper, fsig, sp, ip, cfg->real_offset, TRUE);
9850                                 g_assert (costs > 0);
9851                                 cfg->real_offset += 5;
9852
9853                                 if (!MONO_TYPE_IS_VOID (fsig->ret)) {
9854                                         /* *sp is already set by inline_method */
9855                                         sp++;
9856                                         push_res = FALSE;
9857                                 }
9858
9859                                 inline_costs += costs;
9860
9861                                 goto call_end;
9862                         }
9863
9864                         /* Array methods */
9865                         if (array_rank) {
9866                                 MonoInst *addr;
9867
9868                                 if (strcmp (cmethod->name, "Set") == 0) { /* array Set */
9869                                         MonoInst *val = sp [fsig->param_count];
9870
9871                                         if (val->type == STACK_OBJ) {
9872                                                 MonoInst *iargs [2];
9873
9874                                                 iargs [0] = sp [0];
9875                                                 iargs [1] = val;
9876
9877                                                 mono_emit_jit_icall (cfg, mono_helper_stelem_ref_check, iargs);
9878                                         }
9879
9880                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, TRUE);
9881                                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
9882                                         if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
9883                                                 emit_write_barrier (cfg, addr, val);
9884                                         if (cfg->gen_write_barriers && mini_is_gsharedvt_klass (cmethod->klass))
9885                                                 GSHAREDVT_FAILURE (*ip);
9886                                 } else if (strcmp (cmethod->name, "Get") == 0) { /* array Get */
9887                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9888
9889                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, fsig->ret, addr->dreg, 0);
9890                                 } else if (strcmp (cmethod->name, "Address") == 0) { /* array Address */
9891                                         if (!cmethod->klass->element_class->valuetype && !readonly)
9892                                                 mini_emit_check_array_type (cfg, sp [0], cmethod->klass);
9893                                         CHECK_TYPELOAD (cmethod->klass);
9894
9895                                         readonly = FALSE;
9896                                         addr = mini_emit_ldelema_ins (cfg, cmethod, sp, ip, FALSE);
9897                                         ins = addr;
9898                                 } else {
9899                                         g_assert_not_reached ();
9900                                 }
9901
9902                                 emit_widen = FALSE;
9903                                 goto call_end;
9904                         }
9905
9906                         ins = mini_redirect_call (cfg, cmethod, fsig, sp, virtual_ ? sp [0] : NULL);
9907                         if (ins)
9908                                 goto call_end;
9909
9910                         /* Tail prefix / tail call optimization */
9911
9912                         /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
9913                         /* FIXME: runtime generic context pointer for jumps? */
9914                         /* FIXME: handle this for generic sharing eventually */
9915                         if ((ins_flag & MONO_INST_TAILCALL) &&
9916                                 !vtable_arg && !cfg->gshared && is_supported_tail_call (cfg, method, cmethod, fsig, call_opcode))
9917                                 supported_tail_call = TRUE;
9918
9919                         if (supported_tail_call) {
9920                                 MonoCallInst *call;
9921
9922                                 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
9923                                 INLINE_FAILURE ("tail call");
9924
9925                                 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
9926
9927                                 if (cfg->backend->have_op_tail_call) {
9928                                         /* Handle tail calls similarly to normal calls */
9929                                         tail_call = TRUE;
9930                                 } else {
9931                                         emit_instrumentation_call (cfg, mono_profiler_method_leave);
9932
9933                                         MONO_INST_NEW_CALL (cfg, call, OP_JMP);
9934                                         call->tail_call = TRUE;
9935                                         call->method = cmethod;
9936                                         call->signature = mono_method_signature (cmethod);
9937
9938                                         /*
9939                                          * We implement tail calls by storing the actual arguments into the
9940                                          * argument variables, then emitting a CEE_JMP.
9941                                          */
9942                                         for (i = 0; i < n; ++i) {
9943                                                 /* Prevent argument from being register allocated */
9944                                                 arg_array [i]->flags |= MONO_INST_VOLATILE;
9945                                                 EMIT_NEW_ARGSTORE (cfg, ins, i, sp [i]);
9946                                         }
9947                                         ins = (MonoInst*)call;
9948                                         ins->inst_p0 = cmethod;
9949                                         ins->inst_p1 = arg_array [0];
9950                                         MONO_ADD_INS (cfg->cbb, ins);
9951                                         link_bblock (cfg, cfg->cbb, end_bblock);
9952                                         start_new_bblock = 1;
9953
9954                                         // FIXME: Eliminate unreachable epilogs
9955
9956                                         /*
9957                                          * OP_TAILCALL has no return value, so skip the CEE_RET if it is
9958                                          * only reachable from this call.
9959                                          */
9960                                         GET_BBLOCK (cfg, tblock, ip + 5);
9961                                         if (tblock == cfg->cbb || tblock->in_count == 0)
9962                                                 skip_ret = TRUE;
9963                                         push_res = FALSE;
9964
9965                                         goto call_end;
9966                                 }
9967                         }
9968
9969                         /*
9970                          * Synchronized wrappers.
9971                          * Its hard to determine where to replace a method with its synchronized
9972                          * wrapper without causing an infinite recursion. The current solution is
9973                          * to add the synchronized wrapper in the trampolines, and to
9974                          * change the called method to a dummy wrapper, and resolve that wrapper
9975                          * to the real method in mono_jit_compile_method ().
9976                          */
9977                         if (cfg->method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
9978                                 MonoMethod *orig = mono_marshal_method_from_wrapper (cfg->method);
9979                                 if (cmethod == orig || (cmethod->is_inflated && mono_method_get_declaring_generic_method (cmethod) == orig))
9980                                         cmethod = mono_marshal_get_synchronized_inner_wrapper (cmethod);
9981                         }
9982
9983                         /*
9984                          * Virtual calls in llvm-only mode.
9985                          */
9986                         if (cfg->llvm_only && virtual_ && cmethod && (cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
9987                                 ins = emit_llvmonly_virtual_call (cfg, cmethod, fsig, context_used, sp);
9988                                 goto call_end;
9989                         }
9990
9991                         /* Common call */
9992                         INLINE_FAILURE ("call");
9993                         ins = mono_emit_method_call_full (cfg, cmethod, fsig, tail_call, sp, virtual_ ? sp [0] : NULL,
9994                                                                                           imt_arg, vtable_arg);
9995
9996                         if (tail_call && !cfg->llvm_only) {
9997                                 link_bblock (cfg, cfg->cbb, end_bblock);
9998                                 start_new_bblock = 1;
9999
10000                                 // FIXME: Eliminate unreachable epilogs
10001
10002                                 /*
10003                                  * OP_TAILCALL has no return value, so skip the CEE_RET if it is
10004                                  * only reachable from this call.
10005                                  */
10006                                 GET_BBLOCK (cfg, tblock, ip + 5);
10007                                 if (tblock == cfg->cbb || tblock->in_count == 0)
10008                                         skip_ret = TRUE;
10009                                 push_res = FALSE;
10010                         }
10011
10012                         call_end:
10013
10014                         /* End of call, INS should contain the result of the call, if any */
10015
10016                         if (push_res && !MONO_TYPE_IS_VOID (fsig->ret)) {
10017                                 g_assert (ins);
10018                                 if (emit_widen)
10019                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
10020                                 else
10021                                         *sp++ = ins;
10022                         }
10023
10024                         if (keep_this_alive) {
10025                                 MonoInst *dummy_use;
10026
10027                                 /* See mono_emit_method_call_full () */
10028                                 EMIT_NEW_DUMMY_USE (cfg, dummy_use, keep_this_alive);
10029                         }
10030
10031                         CHECK_CFG_EXCEPTION;
10032
10033                         ip += 5;
10034                         if (skip_ret) {
10035                                 g_assert (*ip == CEE_RET);
10036                                 ip += 1;
10037                         }
10038                         ins_flag = 0;
10039                         constrained_class = NULL;
10040                         if (need_seq_point)
10041                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10042                         break;
10043                 }
10044                 case CEE_RET:
10045                         if (cfg->method != method) {
10046                                 /* return from inlined method */
10047                                 /*
10048                                  * If in_count == 0, that means the ret is unreachable due to
10049                                  * being preceeded by a throw. In that case, inline_method () will
10050                                  * handle setting the return value
10051                                  * (test case: test_0_inline_throw ()).
10052                                  */
10053                                 if (return_var && cfg->cbb->in_count) {
10054                                         MonoType *ret_type = mono_method_signature (method)->ret;
10055
10056                                         MonoInst *store;
10057                                         CHECK_STACK (1);
10058                                         --sp;
10059
10060                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10061                                                 UNVERIFIED;
10062
10063                                         //g_assert (returnvar != -1);
10064                                         EMIT_NEW_TEMPSTORE (cfg, store, return_var->inst_c0, *sp);
10065                                         cfg->ret_var_set = TRUE;
10066                                 }
10067                         } else {
10068                                 emit_instrumentation_call (cfg, mono_profiler_method_leave);
10069
10070                                 if (cfg->lmf_var && cfg->cbb->in_count && !cfg->llvm_only)
10071                                         emit_pop_lmf (cfg);
10072
10073                                 if (cfg->ret) {
10074                                         MonoType *ret_type = mini_get_underlying_type (mono_method_signature (method)->ret);
10075
10076                                         if (seq_points && !sym_seq_points) {
10077                                                 /*
10078                                                  * Place a seq point here too even through the IL stack is not
10079                                                  * empty, so a step over on
10080                                                  * call <FOO>
10081                                                  * ret
10082                                                  * will work correctly.
10083                                                  */
10084                                                 NEW_SEQ_POINT (cfg, ins, ip - header->code, TRUE);
10085                                                 MONO_ADD_INS (cfg->cbb, ins);
10086                                         }
10087
10088                                         g_assert (!return_var);
10089                                         CHECK_STACK (1);
10090                                         --sp;
10091
10092                                         if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
10093                                                 UNVERIFIED;
10094
10095                                         emit_setret (cfg, *sp);
10096                                 }
10097                         }
10098                         if (sp != stack_start)
10099                                 UNVERIFIED;
10100                         MONO_INST_NEW (cfg, ins, OP_BR);
10101                         ip++;
10102                         ins->inst_target_bb = end_bblock;
10103                         MONO_ADD_INS (cfg->cbb, ins);
10104                         link_bblock (cfg, cfg->cbb, end_bblock);
10105                         start_new_bblock = 1;
10106                         break;
10107                 case CEE_BR_S:
10108                         CHECK_OPSIZE (2);
10109                         MONO_INST_NEW (cfg, ins, OP_BR);
10110                         ip++;
10111                         target = ip + 1 + (signed char)(*ip);
10112                         ++ip;
10113                         GET_BBLOCK (cfg, tblock, target);
10114                         link_bblock (cfg, cfg->cbb, tblock);
10115                         ins->inst_target_bb = tblock;
10116                         if (sp != stack_start) {
10117                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10118                                 sp = stack_start;
10119                                 CHECK_UNVERIFIABLE (cfg);
10120                         }
10121                         MONO_ADD_INS (cfg->cbb, ins);
10122                         start_new_bblock = 1;
10123                         inline_costs += BRANCH_COST;
10124                         break;
10125                 case CEE_BEQ_S:
10126                 case CEE_BGE_S:
10127                 case CEE_BGT_S:
10128                 case CEE_BLE_S:
10129                 case CEE_BLT_S:
10130                 case CEE_BNE_UN_S:
10131                 case CEE_BGE_UN_S:
10132                 case CEE_BGT_UN_S:
10133                 case CEE_BLE_UN_S:
10134                 case CEE_BLT_UN_S:
10135                         CHECK_OPSIZE (2);
10136                         CHECK_STACK (2);
10137                         MONO_INST_NEW (cfg, ins, *ip + BIG_BRANCH_OFFSET);
10138                         ip++;
10139                         target = ip + 1 + *(signed char*)ip;
10140                         ip++;
10141
10142                         ADD_BINCOND (NULL);
10143
10144                         sp = stack_start;
10145                         inline_costs += BRANCH_COST;
10146                         break;
10147                 case CEE_BR:
10148                         CHECK_OPSIZE (5);
10149                         MONO_INST_NEW (cfg, ins, OP_BR);
10150                         ip++;
10151
10152                         target = ip + 4 + (gint32)read32(ip);
10153                         ip += 4;
10154                         GET_BBLOCK (cfg, tblock, target);
10155                         link_bblock (cfg, cfg->cbb, tblock);
10156                         ins->inst_target_bb = tblock;
10157                         if (sp != stack_start) {
10158                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10159                                 sp = stack_start;
10160                                 CHECK_UNVERIFIABLE (cfg);
10161                         }
10162
10163                         MONO_ADD_INS (cfg->cbb, ins);
10164
10165                         start_new_bblock = 1;
10166                         inline_costs += BRANCH_COST;
10167                         break;
10168                 case CEE_BRFALSE_S:
10169                 case CEE_BRTRUE_S:
10170                 case CEE_BRFALSE:
10171                 case CEE_BRTRUE: {
10172                         MonoInst *cmp;
10173                         gboolean is_short = ((*ip) == CEE_BRFALSE_S) || ((*ip) == CEE_BRTRUE_S);
10174                         gboolean is_true = ((*ip) == CEE_BRTRUE_S) || ((*ip) == CEE_BRTRUE);
10175                         guint32 opsize = is_short ? 1 : 4;
10176
10177                         CHECK_OPSIZE (opsize);
10178                         CHECK_STACK (1);
10179                         if (sp [-1]->type == STACK_VTYPE || sp [-1]->type == STACK_R8)
10180                                 UNVERIFIED;
10181                         ip ++;
10182                         target = ip + opsize + (is_short ? *(signed char*)ip : (gint32)read32(ip));
10183                         ip += opsize;
10184
10185                         sp--;
10186
10187                         GET_BBLOCK (cfg, tblock, target);
10188                         link_bblock (cfg, cfg->cbb, tblock);
10189                         GET_BBLOCK (cfg, tblock, ip);
10190                         link_bblock (cfg, cfg->cbb, tblock);
10191
10192                         if (sp != stack_start) {
10193                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10194                                 CHECK_UNVERIFIABLE (cfg);
10195                         }
10196
10197                         MONO_INST_NEW(cfg, cmp, OP_ICOMPARE_IMM);
10198                         cmp->sreg1 = sp [0]->dreg;
10199                         type_from_op (cfg, cmp, sp [0], NULL);
10200                         CHECK_TYPE (cmp);
10201
10202 #if SIZEOF_REGISTER == 4
10203                         if (cmp->opcode == OP_LCOMPARE_IMM) {
10204                                 /* Convert it to OP_LCOMPARE */
10205                                 MONO_INST_NEW (cfg, ins, OP_I8CONST);
10206                                 ins->type = STACK_I8;
10207                                 ins->dreg = alloc_dreg (cfg, STACK_I8);
10208                                 ins->inst_l = 0;
10209                                 MONO_ADD_INS (cfg->cbb, ins);
10210                                 cmp->opcode = OP_LCOMPARE;
10211                                 cmp->sreg2 = ins->dreg;
10212                         }
10213 #endif
10214                         MONO_ADD_INS (cfg->cbb, cmp);
10215
10216                         MONO_INST_NEW (cfg, ins, is_true ? CEE_BNE_UN : CEE_BEQ);
10217                         type_from_op (cfg, ins, sp [0], NULL);
10218                         MONO_ADD_INS (cfg->cbb, ins);
10219                         ins->inst_many_bb = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2);
10220                         GET_BBLOCK (cfg, tblock, target);
10221                         ins->inst_true_bb = tblock;
10222                         GET_BBLOCK (cfg, tblock, ip);
10223                         ins->inst_false_bb = tblock;
10224                         start_new_bblock = 2;
10225
10226                         sp = stack_start;
10227                         inline_costs += BRANCH_COST;
10228                         break;
10229                 }
10230                 case CEE_BEQ:
10231                 case CEE_BGE:
10232                 case CEE_BGT:
10233                 case CEE_BLE:
10234                 case CEE_BLT:
10235                 case CEE_BNE_UN:
10236                 case CEE_BGE_UN:
10237                 case CEE_BGT_UN:
10238                 case CEE_BLE_UN:
10239                 case CEE_BLT_UN:
10240                         CHECK_OPSIZE (5);
10241                         CHECK_STACK (2);
10242                         MONO_INST_NEW (cfg, ins, *ip);
10243                         ip++;
10244                         target = ip + 4 + (gint32)read32(ip);
10245                         ip += 4;
10246
10247                         ADD_BINCOND (NULL);
10248
10249                         sp = stack_start;
10250                         inline_costs += BRANCH_COST;
10251                         break;
10252                 case CEE_SWITCH: {
10253                         MonoInst *src1;
10254                         MonoBasicBlock **targets;
10255                         MonoBasicBlock *default_bblock;
10256                         MonoJumpInfoBBTable *table;
10257                         int offset_reg = alloc_preg (cfg);
10258                         int target_reg = alloc_preg (cfg);
10259                         int table_reg = alloc_preg (cfg);
10260                         int sum_reg = alloc_preg (cfg);
10261                         gboolean use_op_switch;
10262
10263                         CHECK_OPSIZE (5);
10264                         CHECK_STACK (1);
10265                         n = read32 (ip + 1);
10266                         --sp;
10267                         src1 = sp [0];
10268                         if ((src1->type != STACK_I4) && (src1->type != STACK_PTR))
10269                                 UNVERIFIED;
10270
10271                         ip += 5;
10272                         CHECK_OPSIZE (n * sizeof (guint32));
10273                         target = ip + n * sizeof (guint32);
10274
10275                         GET_BBLOCK (cfg, default_bblock, target);
10276                         default_bblock->flags |= BB_INDIRECT_JUMP_TARGET;
10277
10278                         targets = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * n);
10279                         for (i = 0; i < n; ++i) {
10280                                 GET_BBLOCK (cfg, tblock, target + (gint32)read32(ip));
10281                                 targets [i] = tblock;
10282                                 targets [i]->flags |= BB_INDIRECT_JUMP_TARGET;
10283                                 ip += 4;
10284                         }
10285
10286                         if (sp != stack_start) {
10287                                 /*
10288                                  * Link the current bb with the targets as well, so handle_stack_args
10289                                  * will set their in_stack correctly.
10290                                  */
10291                                 link_bblock (cfg, cfg->cbb, default_bblock);
10292                                 for (i = 0; i < n; ++i)
10293                                         link_bblock (cfg, cfg->cbb, targets [i]);
10294
10295                                 handle_stack_args (cfg, stack_start, sp - stack_start);
10296                                 sp = stack_start;
10297                                 CHECK_UNVERIFIABLE (cfg);
10298
10299                                 /* Undo the links */
10300                                 mono_unlink_bblock (cfg, cfg->cbb, default_bblock);
10301                                 for (i = 0; i < n; ++i)
10302                                         mono_unlink_bblock (cfg, cfg->cbb, targets [i]);
10303                         }
10304
10305                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ICOMPARE_IMM, -1, src1->dreg, n);
10306                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_IBGE_UN, default_bblock);
10307
10308                         for (i = 0; i < n; ++i)
10309                                 link_bblock (cfg, cfg->cbb, targets [i]);
10310
10311                         table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
10312                         table->table = targets;
10313                         table->table_size = n;
10314
10315                         use_op_switch = FALSE;
10316 #ifdef TARGET_ARM
10317                         /* ARM implements SWITCH statements differently */
10318                         /* FIXME: Make it use the generic implementation */
10319                         if (!cfg->compile_aot)
10320                                 use_op_switch = TRUE;
10321 #endif
10322
10323                         if (COMPILE_LLVM (cfg))
10324                                 use_op_switch = TRUE;
10325
10326                         cfg->cbb->has_jump_table = 1;
10327
10328                         if (use_op_switch) {
10329                                 MONO_INST_NEW (cfg, ins, OP_SWITCH);
10330                                 ins->sreg1 = src1->dreg;
10331                                 ins->inst_p0 = table;
10332                                 ins->inst_many_bb = targets;
10333                                 ins->klass = (MonoClass *)GUINT_TO_POINTER (n);
10334                                 MONO_ADD_INS (cfg->cbb, ins);
10335                         } else {
10336                                 if (sizeof (gpointer) == 8)
10337                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 3);
10338                                 else
10339                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_SHL_IMM, offset_reg, src1->dreg, 2);
10340
10341 #if SIZEOF_REGISTER == 8
10342                                 /* The upper word might not be zero, and we add it to a 64 bit address later */
10343                                 MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, offset_reg, offset_reg);
10344 #endif
10345
10346                                 if (cfg->compile_aot) {
10347                                         MONO_EMIT_NEW_AOTCONST (cfg, table_reg, table, MONO_PATCH_INFO_SWITCH);
10348                                 } else {
10349                                         MONO_INST_NEW (cfg, ins, OP_JUMP_TABLE);
10350                                         ins->inst_c1 = MONO_PATCH_INFO_SWITCH;
10351                                         ins->inst_p0 = table;
10352                                         ins->dreg = table_reg;
10353                                         MONO_ADD_INS (cfg->cbb, ins);
10354                                 }
10355
10356                                 /* FIXME: Use load_memindex */
10357                                 MONO_EMIT_NEW_BIALU (cfg, OP_PADD, sum_reg, table_reg, offset_reg);
10358                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, target_reg, sum_reg, 0);
10359                                 MONO_EMIT_NEW_UNALU (cfg, OP_BR_REG, -1, target_reg);
10360                         }
10361                         start_new_bblock = 1;
10362                         inline_costs += (BRANCH_COST * 2);
10363                         break;
10364                 }
10365                 case CEE_LDIND_I1:
10366                 case CEE_LDIND_U1:
10367                 case CEE_LDIND_I2:
10368                 case CEE_LDIND_U2:
10369                 case CEE_LDIND_I4:
10370                 case CEE_LDIND_U4:
10371                 case CEE_LDIND_I8:
10372                 case CEE_LDIND_I:
10373                 case CEE_LDIND_R4:
10374                 case CEE_LDIND_R8:
10375                 case CEE_LDIND_REF:
10376                         CHECK_STACK (1);
10377                         --sp;
10378
10379                         switch (*ip) {
10380                         case CEE_LDIND_R4:
10381                         case CEE_LDIND_R8:
10382                                 dreg = alloc_freg (cfg);
10383                                 break;
10384                         case CEE_LDIND_I8:
10385                                 dreg = alloc_lreg (cfg);
10386                                 break;
10387                         case CEE_LDIND_REF:
10388                                 dreg = alloc_ireg_ref (cfg);
10389                                 break;
10390                         default:
10391                                 dreg = alloc_preg (cfg);
10392                         }
10393
10394                         NEW_LOAD_MEMBASE (cfg, ins, ldind_to_load_membase (*ip), dreg, sp [0]->dreg, 0);
10395                         ins->type = ldind_type [*ip - CEE_LDIND_I1];
10396                         if (*ip == CEE_LDIND_R4)
10397                                 ins->type = cfg->r4_stack_type;
10398                         ins->flags |= ins_flag;
10399                         MONO_ADD_INS (cfg->cbb, ins);
10400                         *sp++ = ins;
10401                         if (ins_flag & MONO_INST_VOLATILE) {
10402                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10403                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10404                         }
10405                         ins_flag = 0;
10406                         ++ip;
10407                         break;
10408                 case CEE_STIND_REF:
10409                 case CEE_STIND_I1:
10410                 case CEE_STIND_I2:
10411                 case CEE_STIND_I4:
10412                 case CEE_STIND_I8:
10413                 case CEE_STIND_R4:
10414                 case CEE_STIND_R8:
10415                 case CEE_STIND_I:
10416                         CHECK_STACK (2);
10417                         sp -= 2;
10418
10419                         if (ins_flag & MONO_INST_VOLATILE) {
10420                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
10421                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
10422                         }
10423
10424                         NEW_STORE_MEMBASE (cfg, ins, stind_to_store_membase (*ip), sp [0]->dreg, 0, sp [1]->dreg);
10425                         ins->flags |= ins_flag;
10426                         ins_flag = 0;
10427
10428                         MONO_ADD_INS (cfg->cbb, ins);
10429
10430                         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)))
10431                                 emit_write_barrier (cfg, sp [0], sp [1]);
10432
10433                         inline_costs += 1;
10434                         ++ip;
10435                         break;
10436
10437                 case CEE_MUL:
10438                         CHECK_STACK (2);
10439
10440                         MONO_INST_NEW (cfg, ins, (*ip));
10441                         sp -= 2;
10442                         ins->sreg1 = sp [0]->dreg;
10443                         ins->sreg2 = sp [1]->dreg;
10444                         type_from_op (cfg, ins, sp [0], sp [1]);
10445                         CHECK_TYPE (ins);
10446                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10447
10448                         /* Use the immediate opcodes if possible */
10449                         if ((sp [1]->opcode == OP_ICONST) && mono_arch_is_inst_imm (sp [1]->inst_c0)) {
10450                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10451                                 if (imm_opcode != -1) {
10452                                         ins->opcode = imm_opcode;
10453                                         ins->inst_p1 = (gpointer)(gssize)(sp [1]->inst_c0);
10454                                         ins->sreg2 = -1;
10455
10456                                         NULLIFY_INS (sp [1]);
10457                                 }
10458                         }
10459
10460                         MONO_ADD_INS ((cfg)->cbb, (ins));
10461
10462                         *sp++ = mono_decompose_opcode (cfg, ins);
10463                         ip++;
10464                         break;
10465                 case CEE_ADD:
10466                 case CEE_SUB:
10467                 case CEE_DIV:
10468                 case CEE_DIV_UN:
10469                 case CEE_REM:
10470                 case CEE_REM_UN:
10471                 case CEE_AND:
10472                 case CEE_OR:
10473                 case CEE_XOR:
10474                 case CEE_SHL:
10475                 case CEE_SHR:
10476                 case CEE_SHR_UN:
10477                         CHECK_STACK (2);
10478
10479                         MONO_INST_NEW (cfg, ins, (*ip));
10480                         sp -= 2;
10481                         ins->sreg1 = sp [0]->dreg;
10482                         ins->sreg2 = sp [1]->dreg;
10483                         type_from_op (cfg, ins, sp [0], sp [1]);
10484                         CHECK_TYPE (ins);
10485                         add_widen_op (cfg, ins, &sp [0], &sp [1]);
10486                         ins->dreg = alloc_dreg ((cfg), (MonoStackType)(ins)->type);
10487
10488                         /* FIXME: Pass opcode to is_inst_imm */
10489
10490                         /* Use the immediate opcodes if possible */
10491                         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)) {
10492                                 int imm_opcode = mono_op_to_op_imm_noemul (ins->opcode);
10493                                 if (imm_opcode != -1) {
10494                                         ins->opcode = imm_opcode;
10495                                         if (sp [1]->opcode == OP_I8CONST) {
10496 #if SIZEOF_REGISTER == 8
10497                                                 ins->inst_imm = sp [1]->inst_l;
10498 #else
10499                                                 ins->inst_ls_word = sp [1]->inst_ls_word;
10500                                                 ins->inst_ms_word = sp [1]->inst_ms_word;
10501 #endif
10502                                         }
10503                                         else
10504                                                 ins->inst_imm = (gssize)(sp [1]->inst_c0);
10505                                         ins->sreg2 = -1;
10506
10507                                         /* Might be followed by an instruction added by add_widen_op */
10508                                         if (sp [1]->next == NULL)
10509                                                 NULLIFY_INS (sp [1]);
10510                                 }
10511                         }
10512                         MONO_ADD_INS ((cfg)->cbb, (ins));
10513
10514                         *sp++ = mono_decompose_opcode (cfg, ins);
10515                         ip++;
10516                         break;
10517                 case CEE_NEG:
10518                 case CEE_NOT:
10519                 case CEE_CONV_I1:
10520                 case CEE_CONV_I2:
10521                 case CEE_CONV_I4:
10522                 case CEE_CONV_R4:
10523                 case CEE_CONV_R8:
10524                 case CEE_CONV_U4:
10525                 case CEE_CONV_I8:
10526                 case CEE_CONV_U8:
10527                 case CEE_CONV_OVF_I8:
10528                 case CEE_CONV_OVF_U8:
10529                 case CEE_CONV_R_UN:
10530                         CHECK_STACK (1);
10531
10532                         /* Special case this earlier so we have long constants in the IR */
10533                         if ((((*ip) == CEE_CONV_I8) || ((*ip) == CEE_CONV_U8)) && (sp [-1]->opcode == OP_ICONST)) {
10534                                 int data = sp [-1]->inst_c0;
10535                                 sp [-1]->opcode = OP_I8CONST;
10536                                 sp [-1]->type = STACK_I8;
10537 #if SIZEOF_REGISTER == 8
10538                                 if ((*ip) == CEE_CONV_U8)
10539                                         sp [-1]->inst_c0 = (guint32)data;
10540                                 else
10541                                         sp [-1]->inst_c0 = data;
10542 #else
10543                                 sp [-1]->inst_ls_word = data;
10544                                 if ((*ip) == CEE_CONV_U8)
10545                                         sp [-1]->inst_ms_word = 0;
10546                                 else
10547                                         sp [-1]->inst_ms_word = (data < 0) ? -1 : 0;
10548 #endif
10549                                 sp [-1]->dreg = alloc_dreg (cfg, STACK_I8);
10550                         }
10551                         else {
10552                                 ADD_UNOP (*ip);
10553                         }
10554                         ip++;
10555                         break;
10556                 case CEE_CONV_OVF_I4:
10557                 case CEE_CONV_OVF_I1:
10558                 case CEE_CONV_OVF_I2:
10559                 case CEE_CONV_OVF_I:
10560                 case CEE_CONV_OVF_U:
10561                         CHECK_STACK (1);
10562
10563                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10564                                 ADD_UNOP (CEE_CONV_OVF_I8);
10565                                 ADD_UNOP (*ip);
10566                         } else {
10567                                 ADD_UNOP (*ip);
10568                         }
10569                         ip++;
10570                         break;
10571                 case CEE_CONV_OVF_U1:
10572                 case CEE_CONV_OVF_U2:
10573                 case CEE_CONV_OVF_U4:
10574                         CHECK_STACK (1);
10575
10576                         if (sp [-1]->type == STACK_R8 || sp [-1]->type == STACK_R4) {
10577                                 ADD_UNOP (CEE_CONV_OVF_U8);
10578                                 ADD_UNOP (*ip);
10579                         } else {
10580                                 ADD_UNOP (*ip);
10581                         }
10582                         ip++;
10583                         break;
10584                 case CEE_CONV_OVF_I1_UN:
10585                 case CEE_CONV_OVF_I2_UN:
10586                 case CEE_CONV_OVF_I4_UN:
10587                 case CEE_CONV_OVF_I8_UN:
10588                 case CEE_CONV_OVF_U1_UN:
10589                 case CEE_CONV_OVF_U2_UN:
10590                 case CEE_CONV_OVF_U4_UN:
10591                 case CEE_CONV_OVF_U8_UN:
10592                 case CEE_CONV_OVF_I_UN:
10593                 case CEE_CONV_OVF_U_UN:
10594                 case CEE_CONV_U2:
10595                 case CEE_CONV_U1:
10596                 case CEE_CONV_I:
10597                 case CEE_CONV_U:
10598                         CHECK_STACK (1);
10599                         ADD_UNOP (*ip);
10600                         CHECK_CFG_EXCEPTION;
10601                         ip++;
10602                         break;
10603                 case CEE_ADD_OVF:
10604                 case CEE_ADD_OVF_UN:
10605                 case CEE_MUL_OVF:
10606                 case CEE_MUL_OVF_UN:
10607                 case CEE_SUB_OVF:
10608                 case CEE_SUB_OVF_UN:
10609                         CHECK_STACK (2);
10610                         ADD_BINOP (*ip);
10611                         ip++;
10612                         break;
10613                 case CEE_CPOBJ:
10614                         GSHAREDVT_FAILURE (*ip);
10615                         CHECK_OPSIZE (5);
10616                         CHECK_STACK (2);
10617                         token = read32 (ip + 1);
10618                         klass = mini_get_class (method, token, generic_context);
10619                         CHECK_TYPELOAD (klass);
10620                         sp -= 2;
10621                         if (generic_class_is_reference_type (cfg, klass)) {
10622                                 MonoInst *store, *load;
10623                                 int dreg = alloc_ireg_ref (cfg);
10624
10625                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, dreg, sp [1]->dreg, 0);
10626                                 load->flags |= ins_flag;
10627                                 MONO_ADD_INS (cfg->cbb, load);
10628
10629                                 NEW_STORE_MEMBASE (cfg, store, OP_STORE_MEMBASE_REG, sp [0]->dreg, 0, dreg);
10630                                 store->flags |= ins_flag;
10631                                 MONO_ADD_INS (cfg->cbb, store);
10632
10633                                 if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER)
10634                                         emit_write_barrier (cfg, sp [0], sp [1]);
10635                         } else {
10636                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10637                         }
10638                         ins_flag = 0;
10639                         ip += 5;
10640                         break;
10641                 case CEE_LDOBJ: {
10642                         int loc_index = -1;
10643                         int stloc_len = 0;
10644
10645                         CHECK_OPSIZE (5);
10646                         CHECK_STACK (1);
10647                         --sp;
10648                         token = read32 (ip + 1);
10649                         klass = mini_get_class (method, token, generic_context);
10650                         CHECK_TYPELOAD (klass);
10651
10652                         /* Optimize the common ldobj+stloc combination */
10653                         switch (ip [5]) {
10654                         case CEE_STLOC_S:
10655                                 loc_index = ip [6];
10656                                 stloc_len = 2;
10657                                 break;
10658                         case CEE_STLOC_0:
10659                         case CEE_STLOC_1:
10660                         case CEE_STLOC_2:
10661                         case CEE_STLOC_3:
10662                                 loc_index = ip [5] - CEE_STLOC_0;
10663                                 stloc_len = 1;
10664                                 break;
10665                         default:
10666                                 break;
10667                         }
10668
10669                         if ((loc_index != -1) && ip_in_bb (cfg, cfg->cbb, ip + 5)) {
10670                                 CHECK_LOCAL (loc_index);
10671
10672                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10673                                 ins->dreg = cfg->locals [loc_index]->dreg;
10674                                 ins->flags |= ins_flag;
10675                                 ip += 5;
10676                                 ip += stloc_len;
10677                                 if (ins_flag & MONO_INST_VOLATILE) {
10678                                         /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10679                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10680                                 }
10681                                 ins_flag = 0;
10682                                 break;
10683                         }
10684
10685                         /* Optimize the ldobj+stobj combination */
10686                         /* The reference case ends up being a load+store anyway */
10687                         /* Skip this if the operation is volatile. */
10688                         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)) {
10689                                 CHECK_STACK (1);
10690
10691                                 sp --;
10692
10693                                 mini_emit_stobj (cfg, sp [0], sp [1], klass, FALSE);
10694
10695                                 ip += 5 + 5;
10696                                 ins_flag = 0;
10697                                 break;
10698                         }
10699
10700                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0);
10701                         ins->flags |= ins_flag;
10702                         *sp++ = ins;
10703
10704                         if (ins_flag & MONO_INST_VOLATILE) {
10705                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
10706                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
10707                         }
10708
10709                         ip += 5;
10710                         ins_flag = 0;
10711                         inline_costs += 1;
10712                         break;
10713                 }
10714                 case CEE_LDSTR:
10715                         CHECK_STACK_OVF (1);
10716                         CHECK_OPSIZE (5);
10717                         n = read32 (ip + 1);
10718
10719                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) {
10720                                 EMIT_NEW_PCONST (cfg, ins, mono_method_get_wrapper_data (method, n));
10721                                 ins->type = STACK_OBJ;
10722                                 *sp = ins;
10723                         }
10724                         else if (method->wrapper_type != MONO_WRAPPER_NONE) {
10725                                 MonoInst *iargs [1];
10726                                 char *str = (char *)mono_method_get_wrapper_data (method, n);
10727
10728                                 if (cfg->compile_aot)
10729                                         EMIT_NEW_LDSTRLITCONST (cfg, iargs [0], str);
10730                                 else
10731                                         EMIT_NEW_PCONST (cfg, iargs [0], str);
10732                                 *sp = mono_emit_jit_icall (cfg, mono_string_new_wrapper, iargs);
10733                         } else {
10734                                 if (cfg->opt & MONO_OPT_SHARED) {
10735                                         MonoInst *iargs [3];
10736
10737                                         if (cfg->compile_aot) {
10738                                                 cfg->ldstr_list = g_list_prepend (cfg->ldstr_list, GINT_TO_POINTER (n));
10739                                         }
10740                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
10741                                         EMIT_NEW_IMAGECONST (cfg, iargs [1], image);
10742                                         EMIT_NEW_ICONST (cfg, iargs [2], mono_metadata_token_index (n));
10743                                         *sp = mono_emit_jit_icall (cfg, mono_ldstr, iargs);
10744                                         mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10745                                 } else {
10746                                         if (cfg->cbb->out_of_line) {
10747                                                 MonoInst *iargs [2];
10748
10749                                                 if (image == mono_defaults.corlib) {
10750                                                         /*
10751                                                          * Avoid relocations in AOT and save some space by using a
10752                                                          * version of helper_ldstr specialized to mscorlib.
10753                                                          */
10754                                                         EMIT_NEW_ICONST (cfg, iargs [0], mono_metadata_token_index (n));
10755                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr_mscorlib, iargs);
10756                                                 } else {
10757                                                         /* Avoid creating the string object */
10758                                                         EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
10759                                                         EMIT_NEW_ICONST (cfg, iargs [1], mono_metadata_token_index (n));
10760                                                         *sp = mono_emit_jit_icall (cfg, mono_helper_ldstr, iargs);
10761                                                 }
10762                                         }
10763                                         else
10764                                         if (cfg->compile_aot) {
10765                                                 NEW_LDSTRCONST (cfg, ins, image, n);
10766                                                 *sp = ins;
10767                                                 MONO_ADD_INS (cfg->cbb, ins);
10768                                         }
10769                                         else {
10770                                                 NEW_PCONST (cfg, ins, NULL);
10771                                                 ins->type = STACK_OBJ;
10772                                                 ins->inst_p0 = mono_ldstr (cfg->domain, image, mono_metadata_token_index (n));
10773                                                 if (!ins->inst_p0)
10774                                                         OUT_OF_MEMORY_FAILURE;
10775
10776                                                 *sp = ins;
10777                                                 MONO_ADD_INS (cfg->cbb, ins);
10778                                         }
10779                                 }
10780                         }
10781
10782                         sp++;
10783                         ip += 5;
10784                         break;
10785                 case CEE_NEWOBJ: {
10786                         MonoInst *iargs [2];
10787                         MonoMethodSignature *fsig;
10788                         MonoInst this_ins;
10789                         MonoInst *alloc;
10790                         MonoInst *vtable_arg = NULL;
10791
10792                         CHECK_OPSIZE (5);
10793                         token = read32 (ip + 1);
10794                         cmethod = mini_get_method (cfg, method, token, NULL, generic_context);
10795                         CHECK_CFG_ERROR;
10796
10797                         fsig = mono_method_get_signature_checked (cmethod, image, token, generic_context, &cfg->error);
10798                         CHECK_CFG_ERROR;
10799
10800                         mono_save_token_info (cfg, image, token, cmethod);
10801
10802                         if (!mono_class_init (cmethod->klass))
10803                                 TYPE_LOAD_ERROR (cmethod->klass);
10804
10805                         context_used = mini_method_check_context_used (cfg, cmethod);
10806
10807                         if (mono_security_core_clr_enabled ())
10808                                 ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
10809
10810                         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)) {
10811                                 emit_class_init (cfg, cmethod->klass);
10812                                 CHECK_TYPELOAD (cmethod->klass);
10813                         }
10814
10815                         /*
10816                         if (cfg->gsharedvt) {
10817                                 if (mini_is_gsharedvt_variable_signature (sig))
10818                                         GSHAREDVT_FAILURE (*ip);
10819                         }
10820                         */
10821
10822                         n = fsig->param_count;
10823                         CHECK_STACK (n);
10824
10825                         /*
10826                          * Generate smaller code for the common newobj <exception> instruction in
10827                          * argument checking code.
10828                          */
10829                         if (cfg->cbb->out_of_line && cmethod->klass->image == mono_defaults.corlib &&
10830                                 is_exception_class (cmethod->klass) && n <= 2 &&
10831                                 ((n < 1) || (!fsig->params [0]->byref && fsig->params [0]->type == MONO_TYPE_STRING)) &&
10832                                 ((n < 2) || (!fsig->params [1]->byref && fsig->params [1]->type == MONO_TYPE_STRING))) {
10833                                 MonoInst *iargs [3];
10834
10835                                 sp -= n;
10836
10837                                 EMIT_NEW_ICONST (cfg, iargs [0], cmethod->klass->type_token);
10838                                 switch (n) {
10839                                 case 0:
10840                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_0, iargs);
10841                                         break;
10842                                 case 1:
10843                                         iargs [1] = sp [0];
10844                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_1, iargs);
10845                                         break;
10846                                 case 2:
10847                                         iargs [1] = sp [0];
10848                                         iargs [2] = sp [1];
10849                                         *sp ++ = mono_emit_jit_icall (cfg, mono_create_corlib_exception_2, iargs);
10850                                         break;
10851                                 default:
10852                                         g_assert_not_reached ();
10853                                 }
10854
10855                                 ip += 5;
10856                                 inline_costs += 5;
10857                                 break;
10858                         }
10859
10860                         /* move the args to allow room for 'this' in the first position */
10861                         while (n--) {
10862                                 --sp;
10863                                 sp [1] = sp [0];
10864                         }
10865
10866                         /* check_call_signature () requires sp[0] to be set */
10867                         this_ins.type = STACK_OBJ;
10868                         sp [0] = &this_ins;
10869                         if (check_call_signature (cfg, fsig, sp))
10870                                 UNVERIFIED;
10871
10872                         iargs [0] = NULL;
10873
10874                         if (mini_class_is_system_array (cmethod->klass)) {
10875                                 *sp = emit_get_rgctx_method (cfg, context_used,
10876                                                                                          cmethod, MONO_RGCTX_INFO_METHOD);
10877
10878                                 /* Avoid varargs in the common case */
10879                                 if (fsig->param_count == 1)
10880                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_1, sp);
10881                                 else if (fsig->param_count == 2)
10882                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_2, sp);
10883                                 else if (fsig->param_count == 3)
10884                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_3, sp);
10885                                 else if (fsig->param_count == 4)
10886                                         alloc = mono_emit_jit_icall (cfg, mono_array_new_4, sp);
10887                                 else
10888                                         alloc = handle_array_new (cfg, fsig->param_count, sp, ip);
10889                         } else if (cmethod->string_ctor) {
10890                                 g_assert (!context_used);
10891                                 g_assert (!vtable_arg);
10892                                 /* we simply pass a null pointer */
10893                                 EMIT_NEW_PCONST (cfg, *sp, NULL);
10894                                 /* now call the string ctor */
10895                                 alloc = mono_emit_method_call_full (cfg, cmethod, fsig, FALSE, sp, NULL, NULL, NULL);
10896                         } else {
10897                                 if (cmethod->klass->valuetype) {
10898                                         iargs [0] = mono_compile_create_var (cfg, &cmethod->klass->byval_arg, OP_LOCAL);
10899                                         emit_init_rvar (cfg, iargs [0]->dreg, &cmethod->klass->byval_arg);
10900                                         EMIT_NEW_TEMPLOADA (cfg, *sp, iargs [0]->inst_c0);
10901
10902                                         alloc = NULL;
10903
10904                                         /*
10905                                          * The code generated by mini_emit_virtual_call () expects
10906                                          * iargs [0] to be a boxed instance, but luckily the vcall
10907                                          * will be transformed into a normal call there.
10908                                          */
10909                                 } else if (context_used) {
10910                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, context_used);
10911                                         *sp = alloc;
10912                                 } else {
10913                                         MonoVTable *vtable = NULL;
10914
10915                                         if (!cfg->compile_aot)
10916                                                 vtable = mono_class_vtable (cfg->domain, cmethod->klass);
10917                                         CHECK_TYPELOAD (cmethod->klass);
10918
10919                                         /*
10920                                          * TypeInitializationExceptions thrown from the mono_runtime_class_init
10921                                          * call in mono_jit_runtime_invoke () can abort the finalizer thread.
10922                                          * As a workaround, we call class cctors before allocating objects.
10923                                          */
10924                                         if (mini_field_access_needs_cctor_run (cfg, method, cmethod->klass, vtable) && !(g_slist_find (class_inits, cmethod->klass))) {
10925                                                 emit_class_init (cfg, cmethod->klass);
10926                                                 if (cfg->verbose_level > 2)
10927                                                         printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
10928                                                 class_inits = g_slist_prepend (class_inits, cmethod->klass);
10929                                         }
10930
10931                                         alloc = handle_alloc (cfg, cmethod->klass, FALSE, 0);
10932                                         *sp = alloc;
10933                                 }
10934                                 CHECK_CFG_EXCEPTION; /*for handle_alloc*/
10935
10936                                 if (alloc)
10937                                         MONO_EMIT_NEW_UNALU (cfg, OP_NOT_NULL, -1, alloc->dreg);
10938
10939                                 /* Now call the actual ctor */
10940                                 handle_ctor_call (cfg, cmethod, fsig, context_used, sp, ip, &inline_costs);
10941                                 CHECK_CFG_EXCEPTION;
10942                         }
10943
10944                         if (alloc == NULL) {
10945                                 /* Valuetype */
10946                                 EMIT_NEW_TEMPLOAD (cfg, ins, iargs [0]->inst_c0);
10947                                 type_to_eval_stack_type (cfg, &ins->klass->byval_arg, ins);
10948                                 *sp++= ins;
10949                         } else {
10950                                 *sp++ = alloc;
10951                         }
10952
10953                         ip += 5;
10954                         inline_costs += 5;
10955                         if (!(seq_point_locs && mono_bitset_test_fast (seq_point_locs, ip - header->code)))
10956                                 emit_seq_point (cfg, method, ip, FALSE, TRUE);
10957                         break;
10958                 }
10959                 case CEE_CASTCLASS:
10960                         CHECK_STACK (1);
10961                         --sp;
10962                         CHECK_OPSIZE (5);
10963                         token = read32 (ip + 1);
10964                         klass = mini_get_class (method, token, generic_context);
10965                         CHECK_TYPELOAD (klass);
10966                         if (sp [0]->type != STACK_OBJ)
10967                                 UNVERIFIED;
10968
10969                         ins = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
10970                         CHECK_CFG_EXCEPTION;
10971
10972                         *sp ++ = ins;
10973                         ip += 5;
10974                         break;
10975                 case CEE_ISINST: {
10976                         CHECK_STACK (1);
10977                         --sp;
10978                         CHECK_OPSIZE (5);
10979                         token = read32 (ip + 1);
10980                         klass = mini_get_class (method, token, generic_context);
10981                         CHECK_TYPELOAD (klass);
10982                         if (sp [0]->type != STACK_OBJ)
10983                                 UNVERIFIED;
10984
10985                         context_used = mini_class_check_context_used (cfg, klass);
10986
10987                         if (!context_used && mini_class_has_reference_variant_generic_argument (cfg, klass, context_used)) {
10988                                 MonoMethod *mono_isinst = mono_marshal_get_isinst_with_cache ();
10989                                 MonoInst *args [3];
10990                                 int idx;
10991
10992                                 /* obj */
10993                                 args [0] = *sp;
10994
10995                                 /* klass */
10996                                 EMIT_NEW_CLASSCONST (cfg, args [1], klass);
10997
10998                                 /* inline cache*/
10999                                 idx = get_castclass_cache_idx (cfg);
11000                                 args [2] = emit_runtime_constant (cfg, MONO_PATCH_INFO_CASTCLASS_CACHE, GINT_TO_POINTER (idx));
11001
11002                                 *sp++ = mono_emit_method_call (cfg, mono_isinst, args, NULL);
11003                                 ip += 5;
11004                                 inline_costs += 2;
11005                         } else if (!context_used && (mono_class_is_marshalbyref (klass) || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
11006                                 MonoMethod *mono_isinst;
11007                                 MonoInst *iargs [1];
11008                                 int costs;
11009
11010                                 mono_isinst = mono_marshal_get_isinst (klass);
11011                                 iargs [0] = sp [0];
11012
11013                                 costs = inline_method (cfg, mono_isinst, mono_method_signature (mono_isinst),
11014                                                                            iargs, ip, cfg->real_offset, TRUE);
11015                                 CHECK_CFG_EXCEPTION;
11016                                 g_assert (costs > 0);
11017
11018                                 ip += 5;
11019                                 cfg->real_offset += 5;
11020
11021                                 *sp++= iargs [0];
11022
11023                                 inline_costs += costs;
11024                         }
11025                         else {
11026                                 ins = handle_isinst (cfg, klass, *sp, context_used);
11027                                 CHECK_CFG_EXCEPTION;
11028                                 *sp ++ = ins;
11029                                 ip += 5;
11030                         }
11031                         break;
11032                 }
11033                 case CEE_UNBOX_ANY: {
11034                         MonoInst *res, *addr;
11035
11036                         CHECK_STACK (1);
11037                         --sp;
11038                         CHECK_OPSIZE (5);
11039                         token = read32 (ip + 1);
11040                         klass = mini_get_class (method, token, generic_context);
11041                         CHECK_TYPELOAD (klass);
11042
11043                         mono_save_token_info (cfg, image, token, klass);
11044
11045                         context_used = mini_class_check_context_used (cfg, klass);
11046
11047                         if (mini_is_gsharedvt_klass (klass)) {
11048                                 res = handle_unbox_gsharedvt (cfg, klass, *sp);
11049                                 inline_costs += 2;
11050                         } else if (generic_class_is_reference_type (cfg, klass)) {
11051                                 res = handle_castclass (cfg, klass, *sp, ip, &inline_costs);
11052                                 CHECK_CFG_EXCEPTION;
11053                         } else if (mono_class_is_nullable (klass)) {
11054                                 res = handle_unbox_nullable (cfg, *sp, klass, context_used);
11055                         } else {
11056                                 addr = handle_unbox (cfg, klass, sp, context_used);
11057                                 /* LDOBJ */
11058                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
11059                                 res = ins;
11060                                 inline_costs += 2;
11061                         }
11062
11063                         *sp ++ = res;
11064                         ip += 5;
11065                         break;
11066                 }
11067                 case CEE_BOX: {
11068                         MonoInst *val;
11069                         MonoClass *enum_class;
11070                         MonoMethod *has_flag;
11071
11072                         CHECK_STACK (1);
11073                         --sp;
11074                         val = *sp;
11075                         CHECK_OPSIZE (5);
11076                         token = read32 (ip + 1);
11077                         klass = mini_get_class (method, token, generic_context);
11078                         CHECK_TYPELOAD (klass);
11079
11080                         mono_save_token_info (cfg, image, token, klass);
11081
11082                         context_used = mini_class_check_context_used (cfg, klass);
11083
11084                         if (generic_class_is_reference_type (cfg, klass)) {
11085                                 *sp++ = val;
11086                                 ip += 5;
11087                                 break;
11088                         }
11089
11090                         if (klass == mono_defaults.void_class)
11091                                 UNVERIFIED;
11092                         if (target_type_is_incompatible (cfg, &klass->byval_arg, *sp))
11093                                 UNVERIFIED;
11094                         /* frequent check in generic code: box (struct), brtrue */
11095
11096                         /*
11097                          * Look for:
11098                          *
11099                          *   <push int/long ptr>
11100                          *   <push int/long>
11101                          *   box MyFlags
11102                          *   constrained. MyFlags
11103                          *   callvirt instace bool class [mscorlib] System.Enum::HasFlag (class [mscorlib] System.Enum)
11104                          *
11105                          * If we find this sequence and the operand types on box and constrained
11106                          * are equal, we can emit a specialized instruction sequence instead of
11107                          * the very slow HasFlag () call.
11108                          */
11109                         if ((cfg->opt & MONO_OPT_INTRINS) &&
11110                             /* Cheap checks first. */
11111                             ip + 5 + 6 + 5 < end &&
11112                             ip [5] == CEE_PREFIX1 &&
11113                             ip [6] == CEE_CONSTRAINED_ &&
11114                             ip [11] == CEE_CALLVIRT &&
11115                             ip_in_bb (cfg, cfg->cbb, ip + 5 + 6 + 5) &&
11116                             mono_class_is_enum (klass) &&
11117                             (enum_class = mini_get_class (method, read32 (ip + 7), generic_context)) &&
11118                             (has_flag = mini_get_method (cfg, method, read32 (ip + 12), NULL, generic_context)) &&
11119                             has_flag->klass == mono_defaults.enum_class &&
11120                             !strcmp (has_flag->name, "HasFlag") &&
11121                             has_flag->signature->hasthis &&
11122                             has_flag->signature->param_count == 1) {
11123                                 CHECK_TYPELOAD (enum_class);
11124
11125                                 if (enum_class == klass) {
11126                                         MonoInst *enum_this, *enum_flag;
11127
11128                                         ip += 5 + 6 + 5;
11129                                         --sp;
11130
11131                                         enum_this = sp [0];
11132                                         enum_flag = sp [1];
11133
11134                                         *sp++ = handle_enum_has_flag (cfg, klass, enum_this, enum_flag);
11135                                         break;
11136                                 }
11137                         }
11138
11139                         // FIXME: LLVM can't handle the inconsistent bb linking
11140                         if (!mono_class_is_nullable (klass) &&
11141                                 !mini_is_gsharedvt_klass (klass) &&
11142                                 ip + 5 < end && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
11143                                 (ip [5] == CEE_BRTRUE ||
11144                                  ip [5] == CEE_BRTRUE_S ||
11145                                  ip [5] == CEE_BRFALSE ||
11146                                  ip [5] == CEE_BRFALSE_S)) {
11147                                 gboolean is_true = ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S;
11148                                 int dreg;
11149                                 MonoBasicBlock *true_bb, *false_bb;
11150
11151                                 ip += 5;
11152
11153                                 if (cfg->verbose_level > 3) {
11154                                         printf ("converting (in B%d: stack: %d) %s", cfg->cbb->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
11155                                         printf ("<box+brtrue opt>\n");
11156                                 }
11157
11158                                 switch (*ip) {
11159                                 case CEE_BRTRUE_S:
11160                                 case CEE_BRFALSE_S:
11161                                         CHECK_OPSIZE (2);
11162                                         ip++;
11163                                         target = ip + 1 + (signed char)(*ip);
11164                                         ip++;
11165                                         break;
11166                                 case CEE_BRTRUE:
11167                                 case CEE_BRFALSE:
11168                                         CHECK_OPSIZE (5);
11169                                         ip++;
11170                                         target = ip + 4 + (gint)(read32 (ip));
11171                                         ip += 4;
11172                                         break;
11173                                 default:
11174                                         g_assert_not_reached ();
11175                                 }
11176
11177                                 /*
11178                                  * We need to link both bblocks, since it is needed for handling stack
11179                                  * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
11180                                  * Branching to only one of them would lead to inconsistencies, so
11181                                  * generate an ICONST+BRTRUE, the branch opts will get rid of them.
11182                                  */
11183                                 GET_BBLOCK (cfg, true_bb, target);
11184                                 GET_BBLOCK (cfg, false_bb, ip);
11185
11186                                 mono_link_bblock (cfg, cfg->cbb, true_bb);
11187                                 mono_link_bblock (cfg, cfg->cbb, false_bb);
11188
11189                                 if (sp != stack_start) {
11190                                         handle_stack_args (cfg, stack_start, sp - stack_start);
11191                                         sp = stack_start;
11192                                         CHECK_UNVERIFIABLE (cfg);
11193                                 }
11194
11195                                 if (COMPILE_LLVM (cfg)) {
11196                                         dreg = alloc_ireg (cfg);
11197                                         MONO_EMIT_NEW_ICONST (cfg, dreg, 0);
11198                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, dreg, is_true ? 0 : 1);
11199
11200                                         MONO_EMIT_NEW_BRANCH_BLOCK2 (cfg, OP_IBEQ, true_bb, false_bb);
11201                                 } else {
11202                                         /* The JIT can't eliminate the iconst+compare */
11203                                         MONO_INST_NEW (cfg, ins, OP_BR);
11204                                         ins->inst_target_bb = is_true ? true_bb : false_bb;
11205                                         MONO_ADD_INS (cfg->cbb, ins);
11206                                 }
11207
11208                                 start_new_bblock = 1;
11209                                 break;
11210                         }
11211
11212                         *sp++ = handle_box (cfg, val, klass, context_used);
11213
11214                         CHECK_CFG_EXCEPTION;
11215                         ip += 5;
11216                         inline_costs += 1;
11217                         break;
11218                 }
11219                 case CEE_UNBOX: {
11220                         CHECK_STACK (1);
11221                         --sp;
11222                         CHECK_OPSIZE (5);
11223                         token = read32 (ip + 1);
11224                         klass = mini_get_class (method, token, generic_context);
11225                         CHECK_TYPELOAD (klass);
11226
11227                         mono_save_token_info (cfg, image, token, klass);
11228
11229                         context_used = mini_class_check_context_used (cfg, klass);
11230
11231                         if (mono_class_is_nullable (klass)) {
11232                                 MonoInst *val;
11233
11234                                 val = handle_unbox_nullable (cfg, *sp, klass, context_used);
11235                                 EMIT_NEW_VARLOADA (cfg, ins, get_vreg_to_inst (cfg, val->dreg), &val->klass->byval_arg);
11236
11237                                 *sp++= ins;
11238                         } else {
11239                                 ins = handle_unbox (cfg, klass, sp, context_used);
11240                                 *sp++ = ins;
11241                         }
11242                         ip += 5;
11243                         inline_costs += 2;
11244                         break;
11245                 }
11246                 case CEE_LDFLD:
11247                 case CEE_LDFLDA:
11248                 case CEE_STFLD:
11249                 case CEE_LDSFLD:
11250                 case CEE_LDSFLDA:
11251                 case CEE_STSFLD: {
11252                         MonoClassField *field;
11253 #ifndef DISABLE_REMOTING
11254                         int costs;
11255 #endif
11256                         guint foffset;
11257                         gboolean is_instance;
11258                         int op;
11259                         gpointer addr = NULL;
11260                         gboolean is_special_static;
11261                         MonoType *ftype;
11262                         MonoInst *store_val = NULL;
11263                         MonoInst *thread_ins;
11264
11265                         op = *ip;
11266                         is_instance = (op == CEE_LDFLD || op == CEE_LDFLDA || op == CEE_STFLD);
11267                         if (is_instance) {
11268                                 if (op == CEE_STFLD) {
11269                                         CHECK_STACK (2);
11270                                         sp -= 2;
11271                                         store_val = sp [1];
11272                                 } else {
11273                                         CHECK_STACK (1);
11274                                         --sp;
11275                                 }
11276                                 if (sp [0]->type == STACK_I4 || sp [0]->type == STACK_I8 || sp [0]->type == STACK_R8)
11277                                         UNVERIFIED;
11278                                 if (*ip != CEE_LDFLD && sp [0]->type == STACK_VTYPE)
11279                                         UNVERIFIED;
11280                         } else {
11281                                 if (op == CEE_STSFLD) {
11282                                         CHECK_STACK (1);
11283                                         sp--;
11284                                         store_val = sp [0];
11285                                 }
11286                         }
11287
11288                         CHECK_OPSIZE (5);
11289                         token = read32 (ip + 1);
11290                         if (method->wrapper_type != MONO_WRAPPER_NONE) {
11291                                 field = (MonoClassField *)mono_method_get_wrapper_data (method, token);
11292                                 klass = field->parent;
11293                         }
11294                         else {
11295                                 field = mono_field_from_token_checked (image, token, &klass, generic_context, &cfg->error);
11296                                 CHECK_CFG_ERROR;
11297                         }
11298                         if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_field (method, field))
11299                                 FIELD_ACCESS_FAILURE (method, field);
11300                         mono_class_init (klass);
11301
11302                         /* if the class is Critical then transparent code cannot access it's fields */
11303                         if (!is_instance && mono_security_core_clr_enabled ())
11304                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11305
11306                         /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
11307                            any visible *instance* field  (in fact there's a single case for a static field in Marshal) XXX
11308                         if (mono_security_core_clr_enabled ())
11309                                 ensure_method_is_allowed_to_access_field (cfg, method, field);
11310                         */
11311
11312                         ftype = mono_field_get_type (field);
11313
11314                         /*
11315                          * LDFLD etc. is usable on static fields as well, so convert those cases to
11316                          * the static case.
11317                          */
11318                         if (is_instance && ftype->attrs & FIELD_ATTRIBUTE_STATIC) {
11319                                 switch (op) {
11320                                 case CEE_LDFLD:
11321                                         op = CEE_LDSFLD;
11322                                         break;
11323                                 case CEE_STFLD:
11324                                         op = CEE_STSFLD;
11325                                         break;
11326                                 case CEE_LDFLDA:
11327                                         op = CEE_LDSFLDA;
11328                                         break;
11329                                 default:
11330                                         g_assert_not_reached ();
11331                                 }
11332                                 is_instance = FALSE;
11333                         }
11334
11335                         context_used = mini_class_check_context_used (cfg, klass);
11336
11337                         /* INSTANCE CASE */
11338
11339                         foffset = klass->valuetype? field->offset - sizeof (MonoObject): field->offset;
11340                         if (op == CEE_STFLD) {
11341                                 if (target_type_is_incompatible (cfg, field->type, sp [1]))
11342                                         UNVERIFIED;
11343 #ifndef DISABLE_REMOTING
11344                                 if ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class) {
11345                                         MonoMethod *stfld_wrapper = mono_marshal_get_stfld_wrapper (field->type);
11346                                         MonoInst *iargs [5];
11347
11348                                         GSHAREDVT_FAILURE (op);
11349
11350                                         iargs [0] = sp [0];
11351                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11352                                         EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11353                                         EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) :
11354                                                     field->offset);
11355                                         iargs [4] = sp [1];
11356
11357                                         if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11358                                                 costs = inline_method (cfg, stfld_wrapper, mono_method_signature (stfld_wrapper),
11359                                                                                            iargs, ip, cfg->real_offset, TRUE);
11360                                                 CHECK_CFG_EXCEPTION;
11361                                                 g_assert (costs > 0);
11362
11363                                                 cfg->real_offset += 5;
11364
11365                                                 inline_costs += costs;
11366                                         } else {
11367                                                 mono_emit_method_call (cfg, stfld_wrapper, iargs, NULL);
11368                                         }
11369                                 } else
11370 #endif
11371                                 {
11372                                         MonoInst *store;
11373
11374                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11375
11376                                         if (mini_is_gsharedvt_klass (klass)) {
11377                                                 MonoInst *offset_ins;
11378
11379                                                 context_used = mini_class_check_context_used (cfg, klass);
11380
11381                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11382                                                 /* The value is offset by 1 */
11383                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11384                                                 dreg = alloc_ireg_mp (cfg);
11385                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11386                                                 /* The decomposition will call mini_emit_stobj () which will emit a wbarrier if needed */
11387                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, dreg, 0, sp [1]->dreg);
11388                                         } else {
11389                                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, field->type, sp [0]->dreg, foffset, sp [1]->dreg);
11390                                         }
11391                                         if (sp [0]->opcode != OP_LDADDR)
11392                                                 store->flags |= MONO_INST_FAULT;
11393
11394                                 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)) {
11395                                         /* insert call to write barrier */
11396                                         MonoInst *ptr;
11397                                         int dreg;
11398
11399                                         dreg = alloc_ireg_mp (cfg);
11400                                         EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11401                                         emit_write_barrier (cfg, ptr, sp [1]);
11402                                 }
11403
11404                                         store->flags |= ins_flag;
11405                                 }
11406                                 ins_flag = 0;
11407                                 ip += 5;
11408                                 break;
11409                         }
11410
11411 #ifndef DISABLE_REMOTING
11412                         if (is_instance && ((mono_class_is_marshalbyref (klass) && !MONO_CHECK_THIS (sp [0])) || mono_class_is_contextbound (klass) || klass == mono_defaults.marshalbyrefobject_class)) {
11413                                 MonoMethod *wrapper = (op == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
11414                                 MonoInst *iargs [4];
11415
11416                                 GSHAREDVT_FAILURE (op);
11417
11418                                 iargs [0] = sp [0];
11419                                 EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11420                                 EMIT_NEW_FIELDCONST (cfg, iargs [2], field);
11421                                 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
11422                                 if (cfg->opt & MONO_OPT_INLINE || cfg->compile_aot) {
11423                                         costs = inline_method (cfg, wrapper, mono_method_signature (wrapper),
11424                                                                                    iargs, ip, cfg->real_offset, TRUE);
11425                                         CHECK_CFG_EXCEPTION;
11426                                         g_assert (costs > 0);
11427
11428                                         cfg->real_offset += 5;
11429
11430                                         *sp++ = iargs [0];
11431
11432                                         inline_costs += costs;
11433                                 } else {
11434                                         ins = mono_emit_method_call (cfg, wrapper, iargs, NULL);
11435                                         *sp++ = ins;
11436                                 }
11437                         } else
11438 #endif
11439                         if (is_instance) {
11440                                 if (sp [0]->type == STACK_VTYPE) {
11441                                         MonoInst *var;
11442
11443                                         /* Have to compute the address of the variable */
11444
11445                                         var = get_vreg_to_inst (cfg, sp [0]->dreg);
11446                                         if (!var)
11447                                                 var = mono_compile_create_var_for_vreg (cfg, &klass->byval_arg, OP_LOCAL, sp [0]->dreg);
11448                                         else
11449                                                 g_assert (var->klass == klass);
11450
11451                                         EMIT_NEW_VARLOADA (cfg, ins, var, &var->klass->byval_arg);
11452                                         sp [0] = ins;
11453                                 }
11454
11455                                 if (op == CEE_LDFLDA) {
11456                                         if (sp [0]->type == STACK_OBJ) {
11457                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, sp [0]->dreg, 0);
11458                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "NullReferenceException");
11459                                         }
11460
11461                                         dreg = alloc_ireg_mp (cfg);
11462
11463                                         if (mini_is_gsharedvt_klass (klass)) {
11464                                                 MonoInst *offset_ins;
11465
11466                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11467                                                 /* The value is offset by 1 */
11468                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11469                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11470                                         } else {
11471                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, dreg, sp [0]->dreg, foffset);
11472                                         }
11473                                         ins->klass = mono_class_from_mono_type (field->type);
11474                                         ins->type = STACK_MP;
11475                                         *sp++ = ins;
11476                                 } else {
11477                                         MonoInst *load;
11478
11479                                         MONO_EMIT_NULL_CHECK (cfg, sp [0]->dreg);
11480
11481                                         if (mini_is_gsharedvt_klass (klass)) {
11482                                                 MonoInst *offset_ins;
11483
11484                                                 offset_ins = emit_get_gsharedvt_info (cfg, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11485                                                 /* The value is offset by 1 */
11486                                                 EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11487                                                 dreg = alloc_ireg_mp (cfg);
11488                                                 EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, sp [0]->dreg, offset_ins->dreg);
11489                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, dreg, 0);
11490                                         } else {
11491                                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, sp [0]->dreg, foffset);
11492                                         }
11493                                         load->flags |= ins_flag;
11494                                         if (sp [0]->opcode != OP_LDADDR)
11495                                                 load->flags |= MONO_INST_FAULT;
11496                                         *sp++ = load;
11497                                 }
11498                         }
11499
11500                         if (is_instance) {
11501                                 ins_flag = 0;
11502                                 ip += 5;
11503                                 break;
11504                         }
11505
11506                         /* STATIC CASE */
11507                         context_used = mini_class_check_context_used (cfg, klass);
11508
11509                         if (ftype->attrs & FIELD_ATTRIBUTE_LITERAL) {
11510                                 mono_error_set_field_load (&cfg->error, field->parent, field->name, "Using static instructions with literal field");
11511                                 CHECK_CFG_ERROR;
11512                         }
11513
11514                         /* The special_static_fields field is init'd in mono_class_vtable, so it needs
11515                          * to be called here.
11516                          */
11517                         if (!context_used && !(cfg->opt & MONO_OPT_SHARED)) {
11518                                 mono_class_vtable (cfg->domain, klass);
11519                                 CHECK_TYPELOAD (klass);
11520                         }
11521                         mono_domain_lock (cfg->domain);
11522                         if (cfg->domain->special_static_fields)
11523                                 addr = g_hash_table_lookup (cfg->domain->special_static_fields, field);
11524                         mono_domain_unlock (cfg->domain);
11525
11526                         is_special_static = mono_class_field_is_special_static (field);
11527
11528                         if (is_special_static && ((gsize)addr & 0x80000000) == 0)
11529                                 thread_ins = mono_get_thread_intrinsic (cfg);
11530                         else
11531                                 thread_ins = NULL;
11532
11533                         /* Generate IR to compute the field address */
11534                         if (is_special_static && ((gsize)addr & 0x80000000) == 0 && thread_ins && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
11535                                 /*
11536                                  * Fast access to TLS data
11537                                  * Inline version of get_thread_static_data () in
11538                                  * threads.c.
11539                                  */
11540                                 guint32 offset;
11541                                 int idx, static_data_reg, array_reg, dreg;
11542
11543                                 GSHAREDVT_FAILURE (op);
11544
11545                                 MONO_ADD_INS (cfg->cbb, thread_ins);
11546                                 static_data_reg = alloc_ireg (cfg);
11547                                 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, MONO_STRUCT_OFFSET (MonoInternalThread, static_data));
11548
11549                                 if (cfg->compile_aot) {
11550                                         int offset_reg, offset2_reg, idx_reg;
11551
11552                                         /* For TLS variables, this will return the TLS offset */
11553                                         EMIT_NEW_SFLDACONST (cfg, ins, field);
11554                                         offset_reg = ins->dreg;
11555                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset_reg, offset_reg, 0x7fffffff);
11556                                         idx_reg = alloc_ireg (cfg);
11557                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, idx_reg, offset_reg, 0x3f);
11558                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHL_IMM, idx_reg, idx_reg, sizeof (gpointer) == 8 ? 3 : 2);
11559                                         MONO_EMIT_NEW_BIALU (cfg, OP_PADD, static_data_reg, static_data_reg, idx_reg);
11560                                         array_reg = alloc_ireg (cfg);
11561                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, 0);
11562                                         offset2_reg = alloc_ireg (cfg);
11563                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ISHR_UN_IMM, offset2_reg, offset_reg, 6);
11564                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, offset2_reg, offset2_reg, 0x1ffffff);
11565                                         dreg = alloc_ireg (cfg);
11566                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, array_reg, offset2_reg);
11567                                 } else {
11568                                         offset = (gsize)addr & 0x7fffffff;
11569                                         idx = offset & 0x3f;
11570
11571                                         array_reg = alloc_ireg (cfg);
11572                                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, array_reg, static_data_reg, idx * sizeof (gpointer));
11573                                         dreg = alloc_ireg (cfg);
11574                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_ADD_IMM, dreg, array_reg, ((offset >> 6) & 0x1ffffff));
11575                                 }
11576                         } else if ((cfg->opt & MONO_OPT_SHARED) ||
11577                                         (cfg->compile_aot && is_special_static) ||
11578                                         (context_used && is_special_static)) {
11579                                 MonoInst *iargs [2];
11580
11581                                 g_assert (field->parent);
11582                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11583                                 if (context_used) {
11584                                         iargs [1] = emit_get_rgctx_field (cfg, context_used,
11585                                                 field, MONO_RGCTX_INFO_CLASS_FIELD);
11586                                 } else {
11587                                         EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11588                                 }
11589                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11590                         } else if (context_used) {
11591                                 MonoInst *static_data;
11592
11593                                 /*
11594                                 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
11595                                         method->klass->name_space, method->klass->name, method->name,
11596                                         depth, field->offset);
11597                                 */
11598
11599                                 if (mono_class_needs_cctor_run (klass, method))
11600                                         emit_class_init (cfg, klass);
11601
11602                                 /*
11603                                  * The pointer we're computing here is
11604                                  *
11605                                  *   super_info.static_data + field->offset
11606                                  */
11607                                 static_data = emit_get_rgctx_klass (cfg, context_used,
11608                                         klass, MONO_RGCTX_INFO_STATIC_DATA);
11609
11610                                 if (mini_is_gsharedvt_klass (klass)) {
11611                                         MonoInst *offset_ins;
11612
11613                                         offset_ins = emit_get_rgctx_field (cfg, context_used, field, MONO_RGCTX_INFO_FIELD_OFFSET);
11614                                         /* The value is offset by 1 */
11615                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PSUB_IMM, offset_ins->dreg, offset_ins->dreg, 1);
11616                                         dreg = alloc_ireg_mp (cfg);
11617                                         EMIT_NEW_BIALU (cfg, ins, OP_PADD, dreg, static_data->dreg, offset_ins->dreg);
11618                                 } else if (field->offset == 0) {
11619                                         ins = static_data;
11620                                 } else {
11621                                         int addr_reg = mono_alloc_preg (cfg);
11622                                         EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, addr_reg, static_data->dreg, field->offset);
11623                                 }
11624                                 } else if ((cfg->opt & MONO_OPT_SHARED) || (cfg->compile_aot && addr)) {
11625                                 MonoInst *iargs [2];
11626
11627                                 g_assert (field->parent);
11628                                 EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11629                                 EMIT_NEW_FIELDCONST (cfg, iargs [1], field);
11630                                 ins = mono_emit_jit_icall (cfg, mono_class_static_field_address, iargs);
11631                         } else {
11632                                 MonoVTable *vtable = NULL;
11633
11634                                 if (!cfg->compile_aot)
11635                                         vtable = mono_class_vtable (cfg->domain, klass);
11636                                 CHECK_TYPELOAD (klass);
11637
11638                                 if (!addr) {
11639                                         if (mini_field_access_needs_cctor_run (cfg, method, klass, vtable)) {
11640                                                 if (!(g_slist_find (class_inits, klass))) {
11641                                                         emit_class_init (cfg, klass);
11642                                                         if (cfg->verbose_level > 2)
11643                                                                 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
11644                                                         class_inits = g_slist_prepend (class_inits, klass);
11645                                                 }
11646                                         } else {
11647                                                 if (cfg->run_cctors) {
11648                                                         /* This makes so that inline cannot trigger */
11649                                                         /* .cctors: too many apps depend on them */
11650                                                         /* running with a specific order... */
11651                                                         g_assert (vtable);
11652                                                         if (! vtable->initialized)
11653                                                                 INLINE_FAILURE ("class init");
11654                                                         if (!mono_runtime_class_init_full (vtable, &cfg->error)) {
11655                                                                 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
11656                                                                 g_assert_not_reached ();
11657                                                                 goto exception_exit;
11658                                                         }
11659                                                 }
11660                                         }
11661                                         if (cfg->compile_aot)
11662                                                 EMIT_NEW_SFLDACONST (cfg, ins, field);
11663                                         else {
11664                                                 g_assert (vtable);
11665                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11666                                                 g_assert (addr);
11667                                                 EMIT_NEW_PCONST (cfg, ins, addr);
11668                                         }
11669                                 } else {
11670                                         MonoInst *iargs [1];
11671                                         EMIT_NEW_ICONST (cfg, iargs [0], GPOINTER_TO_UINT (addr));
11672                                         ins = mono_emit_jit_icall (cfg, mono_get_special_static_data, iargs);
11673                                 }
11674                         }
11675
11676                         /* Generate IR to do the actual load/store operation */
11677
11678                         if ((op == CEE_STFLD || op == CEE_STSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11679                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11680                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11681                         }
11682
11683                         if (op == CEE_LDSFLDA) {
11684                                 ins->klass = mono_class_from_mono_type (ftype);
11685                                 ins->type = STACK_PTR;
11686                                 *sp++ = ins;
11687                         } else if (op == CEE_STSFLD) {
11688                                 MonoInst *store;
11689
11690                                 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, store, ftype, ins->dreg, 0, store_val->dreg);
11691                                 store->flags |= ins_flag;
11692                         } else {
11693                                 gboolean is_const = FALSE;
11694                                 MonoVTable *vtable = NULL;
11695                                 gpointer addr = NULL;
11696
11697                                 if (!context_used) {
11698                                         vtable = mono_class_vtable (cfg->domain, klass);
11699                                         CHECK_TYPELOAD (klass);
11700                                 }
11701                                 if ((ftype->attrs & FIELD_ATTRIBUTE_INIT_ONLY) && (((addr = mono_aot_readonly_field_override (field)) != NULL) ||
11702                                                 (!context_used && !((cfg->opt & MONO_OPT_SHARED) || cfg->compile_aot) && vtable->initialized))) {
11703                                         int ro_type = ftype->type;
11704                                         if (!addr)
11705                                                 addr = (char*)mono_vtable_get_static_field_data (vtable) + field->offset;
11706                                         if (ro_type == MONO_TYPE_VALUETYPE && ftype->data.klass->enumtype) {
11707                                                 ro_type = mono_class_enum_basetype (ftype->data.klass)->type;
11708                                         }
11709
11710                                         GSHAREDVT_FAILURE (op);
11711
11712                                         /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
11713                                         is_const = TRUE;
11714                                         switch (ro_type) {
11715                                         case MONO_TYPE_BOOLEAN:
11716                                         case MONO_TYPE_U1:
11717                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint8 *)addr));
11718                                                 sp++;
11719                                                 break;
11720                                         case MONO_TYPE_I1:
11721                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint8 *)addr));
11722                                                 sp++;
11723                                                 break;
11724                                         case MONO_TYPE_CHAR:
11725                                         case MONO_TYPE_U2:
11726                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint16 *)addr));
11727                                                 sp++;
11728                                                 break;
11729                                         case MONO_TYPE_I2:
11730                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint16 *)addr));
11731                                                 sp++;
11732                                                 break;
11733                                                 break;
11734                                         case MONO_TYPE_I4:
11735                                                 EMIT_NEW_ICONST (cfg, *sp, *((gint32 *)addr));
11736                                                 sp++;
11737                                                 break;
11738                                         case MONO_TYPE_U4:
11739                                                 EMIT_NEW_ICONST (cfg, *sp, *((guint32 *)addr));
11740                                                 sp++;
11741                                                 break;
11742                                         case MONO_TYPE_I:
11743                                         case MONO_TYPE_U:
11744                                         case MONO_TYPE_PTR:
11745                                         case MONO_TYPE_FNPTR:
11746                                                 EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11747                                                 type_to_eval_stack_type ((cfg), field->type, *sp);
11748                                                 sp++;
11749                                                 break;
11750                                         case MONO_TYPE_STRING:
11751                                         case MONO_TYPE_OBJECT:
11752                                         case MONO_TYPE_CLASS:
11753                                         case MONO_TYPE_SZARRAY:
11754                                         case MONO_TYPE_ARRAY:
11755                                                 if (!mono_gc_is_moving ()) {
11756                                                         EMIT_NEW_PCONST (cfg, *sp, *((gpointer *)addr));
11757                                                         type_to_eval_stack_type ((cfg), field->type, *sp);
11758                                                         sp++;
11759                                                 } else {
11760                                                         is_const = FALSE;
11761                                                 }
11762                                                 break;
11763                                         case MONO_TYPE_I8:
11764                                         case MONO_TYPE_U8:
11765                                                 EMIT_NEW_I8CONST (cfg, *sp, *((gint64 *)addr));
11766                                                 sp++;
11767                                                 break;
11768                                         case MONO_TYPE_R4:
11769                                         case MONO_TYPE_R8:
11770                                         case MONO_TYPE_VALUETYPE:
11771                                         default:
11772                                                 is_const = FALSE;
11773                                                 break;
11774                                         }
11775                                 }
11776
11777                                 if (!is_const) {
11778                                         MonoInst *load;
11779
11780                                         CHECK_STACK_OVF (1);
11781
11782                                         EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, load, field->type, ins->dreg, 0);
11783                                         load->flags |= ins_flag;
11784                                         ins_flag = 0;
11785                                         *sp++ = load;
11786                                 }
11787                         }
11788
11789                         if ((op == CEE_LDFLD || op == CEE_LDSFLD) && (ins_flag & MONO_INST_VOLATILE)) {
11790                                 /* Volatile loads have acquire semantics, see 12.6.7 in Ecma 335 */
11791                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_ACQ);
11792                         }
11793
11794                         ins_flag = 0;
11795                         ip += 5;
11796                         break;
11797                 }
11798                 case CEE_STOBJ:
11799                         CHECK_STACK (2);
11800                         sp -= 2;
11801                         CHECK_OPSIZE (5);
11802                         token = read32 (ip + 1);
11803                         klass = mini_get_class (method, token, generic_context);
11804                         CHECK_TYPELOAD (klass);
11805                         if (ins_flag & MONO_INST_VOLATILE) {
11806                                 /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
11807                                 emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
11808                         }
11809                         /* FIXME: should check item at sp [1] is compatible with the type of the store. */
11810                         EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, sp [0]->dreg, 0, sp [1]->dreg);
11811                         ins->flags |= ins_flag;
11812                         if (cfg->gen_write_barriers && cfg->method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER &&
11813                                         generic_class_is_reference_type (cfg, klass)) {
11814                                 /* insert call to write barrier */
11815                                 emit_write_barrier (cfg, sp [0], sp [1]);
11816                         }
11817                         ins_flag = 0;
11818                         ip += 5;
11819                         inline_costs += 1;
11820                         break;
11821
11822                         /*
11823                          * Array opcodes
11824                          */
11825                 case CEE_NEWARR: {
11826                         MonoInst *len_ins;
11827                         const char *data_ptr;
11828                         int data_size = 0;
11829                         guint32 field_token;
11830
11831                         CHECK_STACK (1);
11832                         --sp;
11833
11834                         CHECK_OPSIZE (5);
11835                         token = read32 (ip + 1);
11836
11837                         klass = mini_get_class (method, token, generic_context);
11838                         CHECK_TYPELOAD (klass);
11839
11840                         context_used = mini_class_check_context_used (cfg, klass);
11841
11842                         if (sp [0]->type == STACK_I8 || (SIZEOF_VOID_P == 8 && sp [0]->type == STACK_PTR)) {
11843                                 MONO_INST_NEW (cfg, ins, OP_LCONV_TO_OVF_U4);
11844                                 ins->sreg1 = sp [0]->dreg;
11845                                 ins->type = STACK_I4;
11846                                 ins->dreg = alloc_ireg (cfg);
11847                                 MONO_ADD_INS (cfg->cbb, ins);
11848                                 *sp = mono_decompose_opcode (cfg, ins);
11849                         }
11850
11851                         if (context_used) {
11852                                 MonoInst *args [3];
11853                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11854                                 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class);
11855
11856                                 /* FIXME: Use OP_NEWARR and decompose later to help abcrem */
11857
11858                                 /* vtable */
11859                                 args [0] = emit_get_rgctx_klass (cfg, context_used,
11860                                         array_class, MONO_RGCTX_INFO_VTABLE);
11861                                 /* array len */
11862                                 args [1] = sp [0];
11863
11864                                 if (managed_alloc)
11865                                         ins = mono_emit_method_call (cfg, managed_alloc, args, NULL);
11866                                 else
11867                                         ins = mono_emit_jit_icall (cfg, ves_icall_array_new_specific, args);
11868                         } else {
11869                                 if (cfg->opt & MONO_OPT_SHARED) {
11870                                         /* Decompose now to avoid problems with references to the domainvar */
11871                                         MonoInst *iargs [3];
11872
11873                                         EMIT_NEW_DOMAINCONST (cfg, iargs [0]);
11874                                         EMIT_NEW_CLASSCONST (cfg, iargs [1], klass);
11875                                         iargs [2] = sp [0];
11876
11877                                         ins = mono_emit_jit_icall (cfg, mono_array_new, iargs);
11878                                 } else {
11879                                         /* Decompose later since it is needed by abcrem */
11880                                         MonoClass *array_type = mono_array_class_get (klass, 1);
11881                                         mono_class_vtable (cfg->domain, array_type);
11882                                         CHECK_TYPELOAD (array_type);
11883
11884                                         MONO_INST_NEW (cfg, ins, OP_NEWARR);
11885                                         ins->dreg = alloc_ireg_ref (cfg);
11886                                         ins->sreg1 = sp [0]->dreg;
11887                                         ins->inst_newa_class = klass;
11888                                         ins->type = STACK_OBJ;
11889                                         ins->klass = array_type;
11890                                         MONO_ADD_INS (cfg->cbb, ins);
11891                                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11892                                         cfg->cbb->has_array_access = TRUE;
11893
11894                                         /* Needed so mono_emit_load_get_addr () gets called */
11895                                         mono_get_got_var (cfg);
11896                                 }
11897                         }
11898
11899                         len_ins = sp [0];
11900                         ip += 5;
11901                         *sp++ = ins;
11902                         inline_costs += 1;
11903
11904                         /*
11905                          * we inline/optimize the initialization sequence if possible.
11906                          * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
11907                          * for small sizes open code the memcpy
11908                          * ensure the rva field is big enough
11909                          */
11910                         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))) {
11911                                 MonoMethod *memcpy_method = get_memcpy_method ();
11912                                 MonoInst *iargs [3];
11913                                 int add_reg = alloc_ireg_mp (cfg);
11914
11915                                 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, MONO_STRUCT_OFFSET (MonoArray, vector));
11916                                 if (cfg->compile_aot) {
11917                                         EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
11918                                 } else {
11919                                         EMIT_NEW_PCONST (cfg, iargs [1], (char*)data_ptr);
11920                                 }
11921                                 EMIT_NEW_ICONST (cfg, iargs [2], data_size);
11922                                 mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
11923                                 ip += 11;
11924                         }
11925
11926                         break;
11927                 }
11928                 case CEE_LDLEN:
11929                         CHECK_STACK (1);
11930                         --sp;
11931                         if (sp [0]->type != STACK_OBJ)
11932                                 UNVERIFIED;
11933
11934                         MONO_INST_NEW (cfg, ins, OP_LDLEN);
11935                         ins->dreg = alloc_preg (cfg);
11936                         ins->sreg1 = sp [0]->dreg;
11937                         ins->type = STACK_I4;
11938                         /* This flag will be inherited by the decomposition */
11939                         ins->flags |= MONO_INST_FAULT;
11940                         MONO_ADD_INS (cfg->cbb, ins);
11941                         cfg->flags |= MONO_CFG_HAS_ARRAY_ACCESS;
11942                         cfg->cbb->has_array_access = TRUE;
11943                         ip ++;
11944                         *sp++ = ins;
11945                         break;
11946                 case CEE_LDELEMA:
11947                         CHECK_STACK (2);
11948                         sp -= 2;
11949                         CHECK_OPSIZE (5);
11950                         if (sp [0]->type != STACK_OBJ)
11951                                 UNVERIFIED;
11952
11953                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
11954
11955                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
11956                         CHECK_TYPELOAD (klass);
11957                         /* we need to make sure that this array is exactly the type it needs
11958                          * to be for correctness. the wrappers are lax with their usage
11959                          * so we need to ignore them here
11960                          */
11961                         if (!klass->valuetype && method->wrapper_type == MONO_WRAPPER_NONE && !readonly) {
11962                                 MonoClass *array_class = mono_array_class_get (klass, 1);
11963                                 mini_emit_check_array_type (cfg, sp [0], array_class);
11964                                 CHECK_TYPELOAD (array_class);
11965                         }
11966
11967                         readonly = FALSE;
11968                         ins = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
11969                         *sp++ = ins;
11970                         ip += 5;
11971                         break;
11972                 case CEE_LDELEM:
11973                 case CEE_LDELEM_I1:
11974                 case CEE_LDELEM_U1:
11975                 case CEE_LDELEM_I2:
11976                 case CEE_LDELEM_U2:
11977                 case CEE_LDELEM_I4:
11978                 case CEE_LDELEM_U4:
11979                 case CEE_LDELEM_I8:
11980                 case CEE_LDELEM_I:
11981                 case CEE_LDELEM_R4:
11982                 case CEE_LDELEM_R8:
11983                 case CEE_LDELEM_REF: {
11984                         MonoInst *addr;
11985
11986                         CHECK_STACK (2);
11987                         sp -= 2;
11988
11989                         if (*ip == CEE_LDELEM) {
11990                                 CHECK_OPSIZE (5);
11991                                 token = read32 (ip + 1);
11992                                 klass = mini_get_class (method, token, generic_context);
11993                                 CHECK_TYPELOAD (klass);
11994                                 mono_class_init (klass);
11995                         }
11996                         else
11997                                 klass = array_access_to_klass (*ip);
11998
11999                         if (sp [0]->type != STACK_OBJ)
12000                                 UNVERIFIED;
12001
12002                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12003
12004                         if (mini_is_gsharedvt_variable_klass (klass)) {
12005                                 // FIXME-VT: OP_ICONST optimization
12006                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12007                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12008                                 ins->opcode = OP_LOADV_MEMBASE;
12009                         } else if (sp [1]->opcode == OP_ICONST) {
12010                                 int array_reg = sp [0]->dreg;
12011                                 int index_reg = sp [1]->dreg;
12012                                 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + MONO_STRUCT_OFFSET (MonoArray, vector);
12013
12014                                 if (SIZEOF_REGISTER == 8 && COMPILE_LLVM (cfg))
12015                                         MONO_EMIT_NEW_UNALU (cfg, OP_ZEXT_I4, index_reg, index_reg);
12016
12017                                 MONO_EMIT_BOUNDS_CHECK (cfg, array_reg, MonoArray, max_length, index_reg);
12018                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, array_reg, offset);
12019                         } else {
12020                                 addr = mini_emit_ldelema_1_ins (cfg, klass, sp [0], sp [1], TRUE);
12021                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, addr->dreg, 0);
12022                         }
12023                         *sp++ = ins;
12024                         if (*ip == CEE_LDELEM)
12025                                 ip += 5;
12026                         else
12027                                 ++ip;
12028                         break;
12029                 }
12030                 case CEE_STELEM_I:
12031                 case CEE_STELEM_I1:
12032                 case CEE_STELEM_I2:
12033                 case CEE_STELEM_I4:
12034                 case CEE_STELEM_I8:
12035                 case CEE_STELEM_R4:
12036                 case CEE_STELEM_R8:
12037                 case CEE_STELEM_REF:
12038                 case CEE_STELEM: {
12039                         CHECK_STACK (3);
12040                         sp -= 3;
12041
12042                         cfg->flags |= MONO_CFG_HAS_LDELEMA;
12043
12044                         if (*ip == CEE_STELEM) {
12045                                 CHECK_OPSIZE (5);
12046                                 token = read32 (ip + 1);
12047                                 klass = mini_get_class (method, token, generic_context);
12048                                 CHECK_TYPELOAD (klass);
12049                                 mono_class_init (klass);
12050                         }
12051                         else
12052                                 klass = array_access_to_klass (*ip);
12053
12054                         if (sp [0]->type != STACK_OBJ)
12055                                 UNVERIFIED;
12056
12057                         emit_array_store (cfg, klass, sp, TRUE);
12058
12059                         if (*ip == CEE_STELEM)
12060                                 ip += 5;
12061                         else
12062                                 ++ip;
12063                         inline_costs += 1;
12064                         break;
12065                 }
12066                 case CEE_CKFINITE: {
12067                         CHECK_STACK (1);
12068                         --sp;
12069
12070                         if (cfg->llvm_only) {
12071                                 MonoInst *iargs [1];
12072
12073                                 iargs [0] = sp [0];
12074                                 *sp++ = mono_emit_jit_icall (cfg, mono_ckfinite, iargs);
12075                         } else  {
12076                                 MONO_INST_NEW (cfg, ins, OP_CKFINITE);
12077                                 ins->sreg1 = sp [0]->dreg;
12078                                 ins->dreg = alloc_freg (cfg);
12079                                 ins->type = STACK_R8;
12080                                 MONO_ADD_INS (cfg->cbb, ins);
12081
12082                                 *sp++ = mono_decompose_opcode (cfg, ins);
12083                         }
12084
12085                         ++ip;
12086                         break;
12087                 }
12088                 case CEE_REFANYVAL: {
12089                         MonoInst *src_var, *src;
12090
12091                         int klass_reg = alloc_preg (cfg);
12092                         int dreg = alloc_preg (cfg);
12093
12094                         GSHAREDVT_FAILURE (*ip);
12095
12096                         CHECK_STACK (1);
12097                         MONO_INST_NEW (cfg, ins, *ip);
12098                         --sp;
12099                         CHECK_OPSIZE (5);
12100                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12101                         CHECK_TYPELOAD (klass);
12102
12103                         context_used = mini_class_check_context_used (cfg, klass);
12104
12105                         // FIXME:
12106                         src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12107                         if (!src_var)
12108                                 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
12109                         EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
12110                         MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass));
12111
12112                         if (context_used) {
12113                                 MonoInst *klass_ins;
12114
12115                                 klass_ins = emit_get_rgctx_klass (cfg, context_used,
12116                                                 klass, MONO_RGCTX_INFO_KLASS);
12117
12118                                 // FIXME:
12119                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, klass_reg, klass_ins->dreg);
12120                                 MONO_EMIT_NEW_COND_EXC (cfg, NE_UN, "InvalidCastException");
12121                         } else {
12122                                 mini_emit_class_check (cfg, klass_reg, klass);
12123                         }
12124                         EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value));
12125                         ins->type = STACK_MP;
12126                         ins->klass = klass;
12127                         *sp++ = ins;
12128                         ip += 5;
12129                         break;
12130                 }
12131                 case CEE_MKREFANY: {
12132                         MonoInst *loc, *addr;
12133
12134                         GSHAREDVT_FAILURE (*ip);
12135
12136                         CHECK_STACK (1);
12137                         MONO_INST_NEW (cfg, ins, *ip);
12138                         --sp;
12139                         CHECK_OPSIZE (5);
12140                         klass = mini_get_class (method, read32 (ip + 1), generic_context);
12141                         CHECK_TYPELOAD (klass);
12142
12143                         context_used = mini_class_check_context_used (cfg, klass);
12144
12145                         loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
12146                         EMIT_NEW_TEMPLOADA (cfg, addr, loc->inst_c0);
12147
12148                         if (context_used) {
12149                                 MonoInst *const_ins;
12150                                 int type_reg = alloc_preg (cfg);
12151
12152                                 const_ins = emit_get_rgctx_klass (cfg, context_used, klass, MONO_RGCTX_INFO_KLASS);
12153                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
12154                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12155                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12156                         } else if (cfg->compile_aot) {
12157                                 int const_reg = alloc_preg (cfg);
12158                                 int type_reg = alloc_preg (cfg);
12159
12160                                 MONO_EMIT_NEW_CLASSCONST (cfg, const_reg, klass);
12161                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
12162                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, MONO_STRUCT_OFFSET (MonoClass, byval_arg));
12163                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
12164                         } else {
12165                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
12166                                 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, klass), klass);
12167                         }
12168                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
12169
12170                         EMIT_NEW_TEMPLOAD (cfg, ins, loc->inst_c0);
12171                         ins->type = STACK_VTYPE;
12172                         ins->klass = mono_defaults.typed_reference_class;
12173                         *sp++ = ins;
12174                         ip += 5;
12175                         break;
12176                 }
12177                 case CEE_LDTOKEN: {
12178                         gpointer handle;
12179                         MonoClass *handle_class;
12180
12181                         CHECK_STACK_OVF (1);
12182
12183                         CHECK_OPSIZE (5);
12184                         n = read32 (ip + 1);
12185
12186                         if (method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD ||
12187                                         method->wrapper_type == MONO_WRAPPER_SYNCHRONIZED) {
12188                                 handle = mono_method_get_wrapper_data (method, n);
12189                                 handle_class = (MonoClass *)mono_method_get_wrapper_data (method, n + 1);
12190                                 if (handle_class == mono_defaults.typehandle_class)
12191                                         handle = &((MonoClass*)handle)->byval_arg;
12192                         }
12193                         else {
12194                                 handle = mono_ldtoken_checked (image, n, &handle_class, generic_context, &cfg->error);
12195                                 CHECK_CFG_ERROR;
12196                         }
12197                         if (!handle)
12198                                 LOAD_ERROR;
12199                         mono_class_init (handle_class);
12200                         if (cfg->gshared) {
12201                                 if (mono_metadata_token_table (n) == MONO_TABLE_TYPEDEF ||
12202                                                 mono_metadata_token_table (n) == MONO_TABLE_TYPEREF) {
12203                                         /* This case handles ldtoken
12204                                            of an open type, like for
12205                                            typeof(Gen<>). */
12206                                         context_used = 0;
12207                                 } else if (handle_class == mono_defaults.typehandle_class) {
12208                                         context_used = mini_class_check_context_used (cfg, mono_class_from_mono_type ((MonoType *)handle));
12209                                 } else if (handle_class == mono_defaults.fieldhandle_class)
12210                                         context_used = mini_class_check_context_used (cfg, ((MonoClassField*)handle)->parent);
12211                                 else if (handle_class == mono_defaults.methodhandle_class)
12212                                         context_used = mini_method_check_context_used (cfg, (MonoMethod *)handle);
12213                                 else
12214                                         g_assert_not_reached ();
12215                         }
12216
12217                         if ((cfg->opt & MONO_OPT_SHARED) &&
12218                                         method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD &&
12219                                         method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED) {
12220                                 MonoInst *addr, *vtvar, *iargs [3];
12221                                 int method_context_used;
12222
12223                                 method_context_used = mini_method_check_context_used (cfg, method);
12224
12225                                 vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12226
12227                                 EMIT_NEW_IMAGECONST (cfg, iargs [0], image);
12228                                 EMIT_NEW_ICONST (cfg, iargs [1], n);
12229                                 if (method_context_used) {
12230                                         iargs [2] = emit_get_rgctx_method (cfg, method_context_used,
12231                                                 method, MONO_RGCTX_INFO_METHOD);
12232                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper_generic_shared, iargs);
12233                                 } else {
12234                                         EMIT_NEW_PCONST (cfg, iargs [2], generic_context);
12235                                         ins = mono_emit_jit_icall (cfg, mono_ldtoken_wrapper, iargs);
12236                                 }
12237                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12238
12239                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12240
12241                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12242                         } else {
12243                                 if ((ip + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 5) &&
12244                                         ((ip [5] == CEE_CALL) || (ip [5] == CEE_CALLVIRT)) &&
12245                                         (cmethod = mini_get_method (cfg, method, read32 (ip + 6), NULL, generic_context)) &&
12246                                         (cmethod->klass == mono_defaults.systemtype_class) &&
12247                                         (strcmp (cmethod->name, "GetTypeFromHandle") == 0)) {
12248                                         MonoClass *tclass = mono_class_from_mono_type ((MonoType *)handle);
12249
12250                                         mono_class_init (tclass);
12251                                         if (context_used) {
12252                                                 ins = emit_get_rgctx_klass (cfg, context_used,
12253                                                         tclass, MONO_RGCTX_INFO_REFLECTION_TYPE);
12254                                         } else if (cfg->compile_aot) {
12255                                                 if (method->wrapper_type) {
12256                                                         mono_error_init (&error); //got to do it since there are multiple conditionals below
12257                                                         if (mono_class_get_checked (tclass->image, tclass->type_token, &error) == tclass && !generic_context) {
12258                                                                 /* Special case for static synchronized wrappers */
12259                                                                 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
12260                                                         } else {
12261                                                                 mono_error_cleanup (&error); /* FIXME don't swallow the error */
12262                                                                 /* FIXME: n is not a normal token */
12263                                                                 DISABLE_AOT (cfg);
12264                                                                 EMIT_NEW_PCONST (cfg, ins, NULL);
12265                                                         }
12266                                                 } else {
12267                                                         EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, image, n, generic_context);
12268                                                 }
12269                                         } else {
12270                                                 MonoReflectionType *rt = mono_type_get_object_checked (cfg->domain, (MonoType *)handle, &cfg->error);
12271                                                 CHECK_CFG_ERROR;
12272                                                 EMIT_NEW_PCONST (cfg, ins, rt);
12273                                         }
12274                                         ins->type = STACK_OBJ;
12275                                         ins->klass = cmethod->klass;
12276                                         ip += 5;
12277                                 } else {
12278                                         MonoInst *addr, *vtvar;
12279
12280                                         vtvar = mono_compile_create_var (cfg, &handle_class->byval_arg, OP_LOCAL);
12281
12282                                         if (context_used) {
12283                                                 if (handle_class == mono_defaults.typehandle_class) {
12284                                                         ins = emit_get_rgctx_klass (cfg, context_used,
12285                                                                         mono_class_from_mono_type ((MonoType *)handle),
12286                                                                         MONO_RGCTX_INFO_TYPE);
12287                                                 } else if (handle_class == mono_defaults.methodhandle_class) {
12288                                                         ins = emit_get_rgctx_method (cfg, context_used,
12289                                                                         (MonoMethod *)handle, MONO_RGCTX_INFO_METHOD);
12290                                                 } else if (handle_class == mono_defaults.fieldhandle_class) {
12291                                                         ins = emit_get_rgctx_field (cfg, context_used,
12292                                                                         (MonoClassField *)handle, MONO_RGCTX_INFO_CLASS_FIELD);
12293                                                 } else {
12294                                                         g_assert_not_reached ();
12295                                                 }
12296                                         } else if (cfg->compile_aot) {
12297                                                 EMIT_NEW_LDTOKENCONST (cfg, ins, image, n, generic_context);
12298                                         } else {
12299                                                 EMIT_NEW_PCONST (cfg, ins, handle);
12300                                         }
12301                                         EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12302                                         MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, addr->dreg, 0, ins->dreg);
12303                                         EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12304                                 }
12305                         }
12306
12307                         *sp++ = ins;
12308                         ip += 5;
12309                         break;
12310                 }
12311                 case CEE_THROW:
12312                         CHECK_STACK (1);
12313                         MONO_INST_NEW (cfg, ins, OP_THROW);
12314                         --sp;
12315                         ins->sreg1 = sp [0]->dreg;
12316                         ip++;
12317                         cfg->cbb->out_of_line = TRUE;
12318                         MONO_ADD_INS (cfg->cbb, ins);
12319                         MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
12320                         MONO_ADD_INS (cfg->cbb, ins);
12321                         sp = stack_start;
12322
12323                         link_bblock (cfg, cfg->cbb, end_bblock);
12324                         start_new_bblock = 1;
12325                         /* This can complicate code generation for llvm since the return value might not be defined */
12326                         if (COMPILE_LLVM (cfg))
12327                                 INLINE_FAILURE ("throw");
12328                         break;
12329                 case CEE_ENDFINALLY:
12330                         /* mono_save_seq_point_info () depends on this */
12331                         if (sp != stack_start)
12332                                 emit_seq_point (cfg, method, ip, FALSE, FALSE);
12333                         MONO_INST_NEW (cfg, ins, OP_ENDFINALLY);
12334                         MONO_ADD_INS (cfg->cbb, ins);
12335                         ip++;
12336                         start_new_bblock = 1;
12337
12338                         /*
12339                          * Control will leave the method so empty the stack, otherwise
12340                          * the next basic block will start with a nonempty stack.
12341                          */
12342                         while (sp != stack_start) {
12343                                 sp--;
12344                         }
12345                         break;
12346                 case CEE_LEAVE:
12347                 case CEE_LEAVE_S: {
12348                         GList *handlers;
12349
12350                         if (*ip == CEE_LEAVE) {
12351                                 CHECK_OPSIZE (5);
12352                                 target = ip + 5 + (gint32)read32(ip + 1);
12353                         } else {
12354                                 CHECK_OPSIZE (2);
12355                                 target = ip + 2 + (signed char)(ip [1]);
12356                         }
12357
12358                         /* empty the stack */
12359                         while (sp != stack_start) {
12360                                 sp--;
12361                         }
12362
12363                         /*
12364                          * If this leave statement is in a catch block, check for a
12365                          * pending exception, and rethrow it if necessary.
12366                          * We avoid doing this in runtime invoke wrappers, since those are called
12367                          * by native code which excepts the wrapper to catch all exceptions.
12368                          */
12369                         for (i = 0; i < header->num_clauses; ++i) {
12370                                 MonoExceptionClause *clause = &header->clauses [i];
12371
12372                                 /*
12373                                  * Use <= in the final comparison to handle clauses with multiple
12374                                  * leave statements, like in bug #78024.
12375                                  * The ordering of the exception clauses guarantees that we find the
12376                                  * innermost clause.
12377                                  */
12378                                 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) {
12379                                         MonoInst *exc_ins;
12380                                         MonoBasicBlock *dont_throw;
12381
12382                                         /*
12383                                           MonoInst *load;
12384
12385                                           NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
12386                                         */
12387
12388                                         exc_ins = mono_emit_jit_icall (cfg, mono_thread_get_undeniable_exception, NULL);
12389
12390                                         NEW_BBLOCK (cfg, dont_throw);
12391
12392                                         /*
12393                                          * Currently, we always rethrow the abort exception, despite the
12394                                          * fact that this is not correct. See thread6.cs for an example.
12395                                          * But propagating the abort exception is more important than
12396                                          * getting the sematics right.
12397                                          */
12398                                         MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, exc_ins->dreg, 0);
12399                                         MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, dont_throw);
12400                                         MONO_EMIT_NEW_UNALU (cfg, OP_THROW, -1, exc_ins->dreg);
12401
12402                                         MONO_START_BB (cfg, dont_throw);
12403                                 }
12404                         }
12405
12406 #ifdef ENABLE_LLVM
12407                         cfg->cbb->try_end = (intptr_t)(ip - header->code);
12408 #endif
12409
12410                         if ((handlers = mono_find_final_block (cfg, ip, target, MONO_EXCEPTION_CLAUSE_FINALLY))) {
12411                                 GList *tmp;
12412                                 MonoExceptionClause *clause;
12413
12414                                 for (tmp = handlers; tmp; tmp = tmp->next) {
12415                                         clause = (MonoExceptionClause *)tmp->data;
12416                                         tblock = cfg->cil_offset_to_bb [clause->handler_offset];
12417                                         g_assert (tblock);
12418                                         link_bblock (cfg, cfg->cbb, tblock);
12419                                         MONO_INST_NEW (cfg, ins, OP_CALL_HANDLER);
12420                                         ins->inst_target_bb = tblock;
12421                                         ins->inst_eh_block = clause;
12422                                         MONO_ADD_INS (cfg->cbb, ins);
12423                                         cfg->cbb->has_call_handler = 1;
12424                                         if (COMPILE_LLVM (cfg)) {
12425                                                 MonoBasicBlock *target_bb;
12426
12427                                                 /*
12428                                                  * Link the finally bblock with the target, since it will
12429                                                  * conceptually branch there.
12430                                                  */
12431                                                 GET_BBLOCK (cfg, tblock, cfg->cil_start + clause->handler_offset + clause->handler_len - 1);
12432                                                 GET_BBLOCK (cfg, target_bb, target);
12433                                                 link_bblock (cfg, tblock, target_bb);
12434                                         }
12435                                 }
12436                                 g_list_free (handlers);
12437                         }
12438
12439                         MONO_INST_NEW (cfg, ins, OP_BR);
12440                         MONO_ADD_INS (cfg->cbb, ins);
12441                         GET_BBLOCK (cfg, tblock, target);
12442                         link_bblock (cfg, cfg->cbb, tblock);
12443                         ins->inst_target_bb = tblock;
12444
12445                         start_new_bblock = 1;
12446
12447                         if (*ip == CEE_LEAVE)
12448                                 ip += 5;
12449                         else
12450                                 ip += 2;
12451
12452                         break;
12453                 }
12454
12455                         /*
12456                          * Mono specific opcodes
12457                          */
12458                 case MONO_CUSTOM_PREFIX: {
12459
12460                         g_assert (method->wrapper_type != MONO_WRAPPER_NONE);
12461
12462                         CHECK_OPSIZE (2);
12463                         switch (ip [1]) {
12464                         case CEE_MONO_ICALL: {
12465                                 gpointer func;
12466                                 MonoJitICallInfo *info;
12467
12468                                 token = read32 (ip + 2);
12469                                 func = mono_method_get_wrapper_data (method, token);
12470                                 info = mono_find_jit_icall_by_addr (func);
12471                                 if (!info)
12472                                         g_error ("Could not find icall address in wrapper %s", mono_method_full_name (method, 1));
12473                                 g_assert (info);
12474
12475                                 CHECK_STACK (info->sig->param_count);
12476                                 sp -= info->sig->param_count;
12477
12478                                 ins = mono_emit_jit_icall (cfg, info->func, sp);
12479                                 if (!MONO_TYPE_IS_VOID (info->sig->ret))
12480                                         *sp++ = ins;
12481
12482                                 ip += 6;
12483                                 inline_costs += 10 * num_calls++;
12484
12485                                 break;
12486                         }
12487                         case CEE_MONO_LDPTR_CARD_TABLE:
12488                         case CEE_MONO_LDPTR_NURSERY_START:
12489                         case CEE_MONO_LDPTR_NURSERY_BITS:
12490                         case CEE_MONO_LDPTR_INT_REQ_FLAG: {
12491                                 CHECK_STACK_OVF (1);
12492
12493                                 switch (ip [1]) {
12494                                         case CEE_MONO_LDPTR_CARD_TABLE:
12495                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_CARD_TABLE_ADDR, NULL);
12496                                                 break;
12497                                         case CEE_MONO_LDPTR_NURSERY_START:
12498                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_START, NULL);
12499                                                 break;
12500                                         case CEE_MONO_LDPTR_NURSERY_BITS:
12501                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_GC_NURSERY_BITS, NULL);
12502                                                 break;
12503                                         case CEE_MONO_LDPTR_INT_REQ_FLAG:
12504                                                 ins = emit_runtime_constant (cfg, MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG, NULL);
12505                                                 break;
12506                                 }
12507
12508                                 *sp++ = ins;
12509                                 ip += 2;
12510                                 inline_costs += 10 * num_calls++;
12511                                 break;
12512                         }
12513                         case CEE_MONO_LDPTR: {
12514                                 gpointer ptr;
12515
12516                                 CHECK_STACK_OVF (1);
12517                                 CHECK_OPSIZE (6);
12518                                 token = read32 (ip + 2);
12519
12520                                 ptr = mono_method_get_wrapper_data (method, token);
12521                                 EMIT_NEW_PCONST (cfg, ins, ptr);
12522                                 *sp++ = ins;
12523                                 ip += 6;
12524                                 inline_costs += 10 * num_calls++;
12525                                 /* Can't embed random pointers into AOT code */
12526                                 DISABLE_AOT (cfg);
12527                                 break;
12528                         }
12529                         case CEE_MONO_JIT_ICALL_ADDR: {
12530                                 MonoJitICallInfo *callinfo;
12531                                 gpointer ptr;
12532
12533                                 CHECK_STACK_OVF (1);
12534                                 CHECK_OPSIZE (6);
12535                                 token = read32 (ip + 2);
12536
12537                                 ptr = mono_method_get_wrapper_data (method, token);
12538                                 callinfo = mono_find_jit_icall_by_addr (ptr);
12539                                 g_assert (callinfo);
12540                                 EMIT_NEW_JIT_ICALL_ADDRCONST (cfg, ins, (char*)callinfo->name);
12541                                 *sp++ = ins;
12542                                 ip += 6;
12543                                 inline_costs += 10 * num_calls++;
12544                                 break;
12545                         }
12546                         case CEE_MONO_ICALL_ADDR: {
12547                                 MonoMethod *cmethod;
12548                                 gpointer ptr;
12549
12550                                 CHECK_STACK_OVF (1);
12551                                 CHECK_OPSIZE (6);
12552                                 token = read32 (ip + 2);
12553
12554                                 cmethod = (MonoMethod *)mono_method_get_wrapper_data (method, token);
12555
12556                                 if (cfg->compile_aot) {
12557                                         EMIT_NEW_AOTCONST (cfg, ins, MONO_PATCH_INFO_ICALL_ADDR, cmethod);
12558                                 } else {
12559                                         ptr = mono_lookup_internal_call (cmethod);
12560                                         g_assert (ptr);
12561                                         EMIT_NEW_PCONST (cfg, ins, ptr);
12562                                 }
12563                                 *sp++ = ins;
12564                                 ip += 6;
12565                                 break;
12566                         }
12567                         case CEE_MONO_VTADDR: {
12568                                 MonoInst *src_var, *src;
12569
12570                                 CHECK_STACK (1);
12571                                 --sp;
12572
12573                                 // FIXME:
12574                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
12575                                 EMIT_NEW_VARLOADA ((cfg), (src), src_var, src_var->inst_vtype);
12576                                 *sp++ = src;
12577                                 ip += 2;
12578                                 break;
12579                         }
12580                         case CEE_MONO_NEWOBJ: {
12581                                 MonoInst *iargs [2];
12582
12583                                 CHECK_STACK_OVF (1);
12584                                 CHECK_OPSIZE (6);
12585                                 token = read32 (ip + 2);
12586                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12587                                 mono_class_init (klass);
12588                                 NEW_DOMAINCONST (cfg, iargs [0]);
12589                                 MONO_ADD_INS (cfg->cbb, iargs [0]);
12590                                 NEW_CLASSCONST (cfg, iargs [1], klass);
12591                                 MONO_ADD_INS (cfg->cbb, iargs [1]);
12592                                 *sp++ = mono_emit_jit_icall (cfg, ves_icall_object_new, iargs);
12593                                 ip += 6;
12594                                 inline_costs += 10 * num_calls++;
12595                                 break;
12596                         }
12597                         case CEE_MONO_OBJADDR:
12598                                 CHECK_STACK (1);
12599                                 --sp;
12600                                 MONO_INST_NEW (cfg, ins, OP_MOVE);
12601                                 ins->dreg = alloc_ireg_mp (cfg);
12602                                 ins->sreg1 = sp [0]->dreg;
12603                                 ins->type = STACK_MP;
12604                                 MONO_ADD_INS (cfg->cbb, ins);
12605                                 *sp++ = ins;
12606                                 ip += 2;
12607                                 break;
12608                         case CEE_MONO_LDNATIVEOBJ:
12609                                 /*
12610                                  * Similar to LDOBJ, but instead load the unmanaged
12611                                  * representation of the vtype to the stack.
12612                                  */
12613                                 CHECK_STACK (1);
12614                                 CHECK_OPSIZE (6);
12615                                 --sp;
12616                                 token = read32 (ip + 2);
12617                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12618                                 g_assert (klass->valuetype);
12619                                 mono_class_init (klass);
12620
12621                                 {
12622                                         MonoInst *src, *dest, *temp;
12623
12624                                         src = sp [0];
12625                                         temp = mono_compile_create_var (cfg, &klass->byval_arg, OP_LOCAL);
12626                                         temp->backend.is_pinvoke = 1;
12627                                         EMIT_NEW_TEMPLOADA (cfg, dest, temp->inst_c0);
12628                                         mini_emit_stobj (cfg, dest, src, klass, TRUE);
12629
12630                                         EMIT_NEW_TEMPLOAD (cfg, dest, temp->inst_c0);
12631                                         dest->type = STACK_VTYPE;
12632                                         dest->klass = klass;
12633
12634                                         *sp ++ = dest;
12635                                         ip += 6;
12636                                 }
12637                                 break;
12638                         case CEE_MONO_RETOBJ: {
12639                                 /*
12640                                  * Same as RET, but return the native representation of a vtype
12641                                  * to the caller.
12642                                  */
12643                                 g_assert (cfg->ret);
12644                                 g_assert (mono_method_signature (method)->pinvoke);
12645                                 CHECK_STACK (1);
12646                                 --sp;
12647
12648                                 CHECK_OPSIZE (6);
12649                                 token = read32 (ip + 2);
12650                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12651
12652                                 if (!cfg->vret_addr) {
12653                                         g_assert (cfg->ret_var_is_local);
12654
12655                                         EMIT_NEW_VARLOADA (cfg, ins, cfg->ret, cfg->ret->inst_vtype);
12656                                 } else {
12657                                         EMIT_NEW_RETLOADA (cfg, ins);
12658                                 }
12659                                 mini_emit_stobj (cfg, ins, sp [0], klass, TRUE);
12660
12661                                 if (sp != stack_start)
12662                                         UNVERIFIED;
12663
12664                                 MONO_INST_NEW (cfg, ins, OP_BR);
12665                                 ins->inst_target_bb = end_bblock;
12666                                 MONO_ADD_INS (cfg->cbb, ins);
12667                                 link_bblock (cfg, cfg->cbb, end_bblock);
12668                                 start_new_bblock = 1;
12669                                 ip += 6;
12670                                 break;
12671                         }
12672                         case CEE_MONO_CISINST:
12673                         case CEE_MONO_CCASTCLASS: {
12674                                 int token;
12675                                 CHECK_STACK (1);
12676                                 --sp;
12677                                 CHECK_OPSIZE (6);
12678                                 token = read32 (ip + 2);
12679                                 klass = (MonoClass *)mono_method_get_wrapper_data (method, token);
12680                                 if (ip [1] == CEE_MONO_CISINST)
12681                                         ins = handle_cisinst (cfg, klass, sp [0]);
12682                                 else
12683                                         ins = handle_ccastclass (cfg, klass, sp [0]);
12684                                 *sp++ = ins;
12685                                 ip += 6;
12686                                 break;
12687                         }
12688                         case CEE_MONO_SAVE_LMF:
12689                         case CEE_MONO_RESTORE_LMF:
12690                                 ip += 2;
12691                                 break;
12692                         case CEE_MONO_CLASSCONST:
12693                                 CHECK_STACK_OVF (1);
12694                                 CHECK_OPSIZE (6);
12695                                 token = read32 (ip + 2);
12696                                 EMIT_NEW_CLASSCONST (cfg, ins, mono_method_get_wrapper_data (method, token));
12697                                 *sp++ = ins;
12698                                 ip += 6;
12699                                 inline_costs += 10 * num_calls++;
12700                                 break;
12701                         case CEE_MONO_NOT_TAKEN:
12702                                 cfg->cbb->out_of_line = TRUE;
12703                                 ip += 2;
12704                                 break;
12705                         case CEE_MONO_TLS: {
12706                                 MonoTlsKey key;
12707
12708                                 CHECK_STACK_OVF (1);
12709                                 CHECK_OPSIZE (6);
12710                                 key = (MonoTlsKey)read32 (ip + 2);
12711                                 g_assert (key < TLS_KEY_NUM);
12712
12713                                 ins = mono_create_tls_get (cfg, key);
12714                                 if (!ins) {
12715                                         if (cfg->compile_aot) {
12716                                                 DISABLE_AOT (cfg);
12717                                                 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
12718                                                 ins->dreg = alloc_preg (cfg);
12719                                                 ins->type = STACK_PTR;
12720                                         } else {
12721                                                 g_assert_not_reached ();
12722                                         }
12723                                 }
12724                                 ins->type = STACK_PTR;
12725                                 MONO_ADD_INS (cfg->cbb, ins);
12726                                 *sp++ = ins;
12727                                 ip += 6;
12728                                 break;
12729                         }
12730                         case CEE_MONO_DYN_CALL: {
12731                                 MonoCallInst *call;
12732
12733                                 /* It would be easier to call a trampoline, but that would put an
12734                                  * extra frame on the stack, confusing exception handling. So
12735                                  * implement it inline using an opcode for now.
12736                                  */
12737
12738                                 if (!cfg->dyn_call_var) {
12739                                         cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12740                                         /* prevent it from being register allocated */
12741                                         cfg->dyn_call_var->flags |= MONO_INST_VOLATILE;
12742                                 }
12743
12744                                 /* Has to use a call inst since it local regalloc expects it */
12745                                 MONO_INST_NEW_CALL (cfg, call, OP_DYN_CALL);
12746                                 ins = (MonoInst*)call;
12747                                 sp -= 2;
12748                                 ins->sreg1 = sp [0]->dreg;
12749                                 ins->sreg2 = sp [1]->dreg;
12750                                 MONO_ADD_INS (cfg->cbb, ins);
12751
12752                                 cfg->param_area = MAX (cfg->param_area, cfg->backend->dyn_call_param_area);
12753
12754                                 ip += 2;
12755                                 inline_costs += 10 * num_calls++;
12756
12757                                 break;
12758                         }
12759                         case CEE_MONO_MEMORY_BARRIER: {
12760                                 CHECK_OPSIZE (6);
12761                                 emit_memory_barrier (cfg, (int)read32 (ip + 2));
12762                                 ip += 6;
12763                                 break;
12764                         }
12765                         case CEE_MONO_JIT_ATTACH: {
12766                                 MonoInst *args [16], *domain_ins;
12767                                 MonoInst *ad_ins, *jit_tls_ins;
12768                                 MonoBasicBlock *next_bb = NULL, *call_bb = NULL;
12769
12770                                 cfg->attach_cookie = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12771                                 cfg->attach_dummy = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
12772
12773                                 if (mono_threads_is_coop_enabled ()) {
12774                                         /* AOT code is only used in the root domain */
12775                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12776                                         EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12777                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12778                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12779                                 } else {
12780                                         EMIT_NEW_PCONST (cfg, ins, NULL);
12781                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12782
12783                                         ad_ins = mono_get_domain_intrinsic (cfg);
12784                                         jit_tls_ins = mono_get_jit_tls_intrinsic (cfg);
12785
12786                                         if (cfg->backend->have_tls_get && ad_ins && jit_tls_ins) {
12787                                                 NEW_BBLOCK (cfg, next_bb);
12788                                                 NEW_BBLOCK (cfg, call_bb);
12789
12790                                                 if (cfg->compile_aot) {
12791                                                         /* AOT code is only used in the root domain */
12792                                                         EMIT_NEW_PCONST (cfg, domain_ins, NULL);
12793                                                 } else {
12794                                                         EMIT_NEW_PCONST (cfg, domain_ins, cfg->domain);
12795                                                 }
12796                                                 MONO_ADD_INS (cfg->cbb, ad_ins);
12797                                                 MONO_EMIT_NEW_BIALU (cfg, OP_COMPARE, -1, ad_ins->dreg, domain_ins->dreg);
12798                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, call_bb);
12799
12800                                                 MONO_ADD_INS (cfg->cbb, jit_tls_ins);
12801                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, jit_tls_ins->dreg, 0);
12802                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBEQ, call_bb);
12803
12804                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, next_bb);
12805                                                 MONO_START_BB (cfg, call_bb);
12806                                         }
12807
12808                                         /* AOT code is only used in the root domain */
12809                                         EMIT_NEW_PCONST (cfg, args [0], cfg->compile_aot ? NULL : cfg->domain);
12810                                         EMIT_NEW_PCONST (cfg, args [1], NULL);
12811                                         ins = mono_emit_jit_icall (cfg, mono_jit_thread_attach, args);
12812                                         MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->attach_cookie->dreg, ins->dreg);
12813
12814                                         if (next_bb)
12815                                                 MONO_START_BB (cfg, next_bb);
12816                                 }
12817
12818                                 ip += 2;
12819                                 break;
12820                         }
12821                         case CEE_MONO_JIT_DETACH: {
12822                                 MonoInst *args [16];
12823
12824                                 /* Restore the original domain */
12825                                 dreg = alloc_ireg (cfg);
12826                                 EMIT_NEW_UNALU (cfg, args [0], OP_MOVE, dreg, cfg->attach_cookie->dreg);
12827                                 EMIT_NEW_VARLOADA (cfg, args [1], cfg->attach_dummy, cfg->attach_dummy->inst_vtype);
12828                                 mono_emit_jit_icall (cfg, mono_jit_thread_detach, args);
12829                                 ip += 2;
12830                                 break;
12831                         }
12832                         case CEE_MONO_CALLI_EXTRA_ARG: {
12833                                 MonoInst *addr;
12834                                 MonoMethodSignature *fsig;
12835                                 MonoInst *arg;
12836
12837                                 /*
12838                                  * This is the same as CEE_CALLI, but passes an additional argument
12839                                  * to the called method in llvmonly mode.
12840                                  * This is only used by delegate invoke wrappers to call the
12841                                  * actual delegate method.
12842                                  */
12843                                 g_assert (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE);
12844
12845                                 CHECK_OPSIZE (6);
12846                                 token = read32 (ip + 2);
12847
12848                                 ins = NULL;
12849
12850                                 cmethod = NULL;
12851                                 CHECK_STACK (1);
12852                                 --sp;
12853                                 addr = *sp;
12854                                 fsig = mini_get_signature (method, token, generic_context);
12855
12856                                 if (cfg->llvm_only)
12857                                         cfg->signatures = g_slist_prepend_mempool (cfg->mempool, cfg->signatures, fsig);
12858
12859                                 n = fsig->param_count + fsig->hasthis + 1;
12860
12861                                 CHECK_STACK (n);
12862
12863                                 sp -= n;
12864                                 arg = sp [n - 1];
12865
12866                                 if (cfg->llvm_only) {
12867                                         /*
12868                                          * The lowest bit of 'arg' determines whenever the callee uses the gsharedvt
12869                                          * cconv. This is set by mono_init_delegate ().
12870                                          */
12871                                         if (cfg->gsharedvt && mini_is_gsharedvt_variable_signature (fsig)) {
12872                                                 MonoInst *callee = addr;
12873                                                 MonoInst *call, *localloc_ins;
12874                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12875                                                 int low_bit_reg = alloc_preg (cfg);
12876
12877                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12878                                                 NEW_BBLOCK (cfg, end_bb);
12879
12880                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12881                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12882                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12883
12884                                                 /* Normal case: callee uses a normal cconv, have to add an out wrapper */
12885                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12886                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12887                                                 /*
12888                                                  * ADDR points to a gsharedvt-out wrapper, have to pass <callee, arg> as an extra arg.
12889                                                  */
12890                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12891                                                 ins->dreg = alloc_preg (cfg);
12892                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12893                                                 MONO_ADD_INS (cfg->cbb, ins);
12894                                                 localloc_ins = ins;
12895                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12896                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12897                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12898
12899                                                 call = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12900                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12901
12902                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, no conversion is needed */
12903                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12904                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12905                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12906                                                 ins->dreg = call->dreg;
12907
12908                                                 MONO_START_BB (cfg, end_bb);
12909                                         } else {
12910                                                 /* Caller uses a normal calling conv */
12911
12912                                                 MonoInst *callee = addr;
12913                                                 MonoInst *call, *localloc_ins;
12914                                                 MonoBasicBlock *is_gsharedvt_bb, *end_bb;
12915                                                 int low_bit_reg = alloc_preg (cfg);
12916
12917                                                 NEW_BBLOCK (cfg, is_gsharedvt_bb);
12918                                                 NEW_BBLOCK (cfg, end_bb);
12919
12920                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PAND_IMM, low_bit_reg, arg->dreg, 1);
12921                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, low_bit_reg, 0);
12922                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_PBNE_UN, is_gsharedvt_bb);
12923
12924                                                 /* Normal case: callee uses a normal cconv, no conversion is needed */
12925                                                 call = emit_extra_arg_calli (cfg, fsig, sp, arg->dreg, callee);
12926                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12927                                                 /* Gsharedvt case: callee uses a gsharedvt cconv, have to add an in wrapper */
12928                                                 MONO_START_BB (cfg, is_gsharedvt_bb);
12929                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_PXOR_IMM, arg->dreg, arg->dreg, 1);
12930                                                 NEW_AOTCONST (cfg, addr, MONO_PATCH_INFO_GSHAREDVT_IN_WRAPPER, fsig);
12931                                                 MONO_ADD_INS (cfg->cbb, addr);
12932                                                 /*
12933                                                  * ADDR points to a gsharedvt-in wrapper, have to pass <callee, arg> as an extra arg.
12934                                                  */
12935                                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC_IMM);
12936                                                 ins->dreg = alloc_preg (cfg);
12937                                                 ins->inst_imm = 2 * SIZEOF_VOID_P;
12938                                                 MONO_ADD_INS (cfg->cbb, ins);
12939                                                 localloc_ins = ins;
12940                                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
12941                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, 0, callee->dreg);
12942                                                 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, localloc_ins->dreg, SIZEOF_VOID_P, arg->dreg);
12943
12944                                                 ins = emit_extra_arg_calli (cfg, fsig, sp, localloc_ins->dreg, addr);
12945                                                 ins->dreg = call->dreg;
12946                                                 MONO_EMIT_NEW_BRANCH_BLOCK (cfg, OP_BR, end_bb);
12947
12948                                                 MONO_START_BB (cfg, end_bb);
12949                                         }
12950                                 } else {
12951                                         /* Same as CEE_CALLI */
12952                                         if (cfg->gsharedvt && mini_is_gsharedvt_signature (fsig)) {
12953                                                 /*
12954                                                  * We pass the address to the gsharedvt trampoline in the rgctx reg
12955                                                  */
12956                                                 MonoInst *callee = addr;
12957
12958                                                 addr = emit_get_rgctx_sig (cfg, context_used,
12959                                                                                                    fsig, MONO_RGCTX_INFO_SIG_GSHAREDVT_OUT_TRAMPOLINE_CALLI);
12960                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, callee);
12961                                         } else {
12962                                                 ins = (MonoInst*)mono_emit_calli (cfg, fsig, sp, addr, NULL, NULL);
12963                                         }
12964                                 }
12965
12966                                 if (!MONO_TYPE_IS_VOID (fsig->ret))
12967                                         *sp++ = mono_emit_widen_call_res (cfg, ins, fsig);
12968
12969                                 CHECK_CFG_EXCEPTION;
12970
12971                                 ip += 6;
12972                                 ins_flag = 0;
12973                                 constrained_class = NULL;
12974                                 break;
12975                         }
12976                         default:
12977                                 g_error ("opcode 0x%02x 0x%02x not handled", MONO_CUSTOM_PREFIX, ip [1]);
12978                                 break;
12979                         }
12980                         break;
12981                 }
12982
12983                 case CEE_PREFIX1: {
12984                         CHECK_OPSIZE (2);
12985                         switch (ip [1]) {
12986                         case CEE_ARGLIST: {
12987                                 /* somewhat similar to LDTOKEN */
12988                                 MonoInst *addr, *vtvar;
12989                                 CHECK_STACK_OVF (1);
12990                                 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
12991
12992                                 EMIT_NEW_TEMPLOADA (cfg, addr, vtvar->inst_c0);
12993                                 EMIT_NEW_UNALU (cfg, ins, OP_ARGLIST, -1, addr->dreg);
12994
12995                                 EMIT_NEW_TEMPLOAD (cfg, ins, vtvar->inst_c0);
12996                                 ins->type = STACK_VTYPE;
12997                                 ins->klass = mono_defaults.argumenthandle_class;
12998                                 *sp++ = ins;
12999                                 ip += 2;
13000                                 break;
13001                         }
13002                         case CEE_CEQ:
13003                         case CEE_CGT:
13004                         case CEE_CGT_UN:
13005                         case CEE_CLT:
13006                         case CEE_CLT_UN: {
13007                                 MonoInst *cmp, *arg1, *arg2;
13008
13009                                 CHECK_STACK (2);
13010                                 sp -= 2;
13011                                 arg1 = sp [0];
13012                                 arg2 = sp [1];
13013
13014                                 /*
13015                                  * The following transforms:
13016                                  *    CEE_CEQ    into OP_CEQ
13017                                  *    CEE_CGT    into OP_CGT
13018                                  *    CEE_CGT_UN into OP_CGT_UN
13019                                  *    CEE_CLT    into OP_CLT
13020                                  *    CEE_CLT_UN into OP_CLT_UN
13021                                  */
13022                                 MONO_INST_NEW (cfg, cmp, (OP_CEQ - CEE_CEQ) + ip [1]);
13023
13024                                 MONO_INST_NEW (cfg, ins, cmp->opcode);
13025                                 cmp->sreg1 = arg1->dreg;
13026                                 cmp->sreg2 = arg2->dreg;
13027                                 type_from_op (cfg, cmp, arg1, arg2);
13028                                 CHECK_TYPE (cmp);
13029                                 add_widen_op (cfg, cmp, &arg1, &arg2);
13030                                 if ((arg1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((arg1->type == STACK_PTR) || (arg1->type == STACK_OBJ) || (arg1->type == STACK_MP))))
13031                                         cmp->opcode = OP_LCOMPARE;
13032                                 else if (arg1->type == STACK_R4)
13033                                         cmp->opcode = OP_RCOMPARE;
13034                                 else if (arg1->type == STACK_R8)
13035                                         cmp->opcode = OP_FCOMPARE;
13036                                 else
13037                                         cmp->opcode = OP_ICOMPARE;
13038                                 MONO_ADD_INS (cfg->cbb, cmp);
13039                                 ins->type = STACK_I4;
13040                                 ins->dreg = alloc_dreg (cfg, (MonoStackType)ins->type);
13041                                 type_from_op (cfg, ins, arg1, arg2);
13042
13043                                 if (cmp->opcode == OP_FCOMPARE || cmp->opcode == OP_RCOMPARE) {
13044                                         /*
13045                                          * The backends expect the fceq opcodes to do the
13046                                          * comparison too.
13047                                          */
13048                                         ins->sreg1 = cmp->sreg1;
13049                                         ins->sreg2 = cmp->sreg2;
13050                                         NULLIFY_INS (cmp);
13051                                 }
13052                                 MONO_ADD_INS (cfg->cbb, ins);
13053                                 *sp++ = ins;
13054                                 ip += 2;
13055                                 break;
13056                         }
13057                         case CEE_LDFTN: {
13058                                 MonoInst *argconst;
13059                                 MonoMethod *cil_method;
13060
13061                                 CHECK_STACK_OVF (1);
13062                                 CHECK_OPSIZE (6);
13063                                 n = read32 (ip + 2);
13064                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13065                                 CHECK_CFG_ERROR;
13066
13067                                 mono_class_init (cmethod->klass);
13068
13069                                 mono_save_token_info (cfg, image, n, cmethod);
13070
13071                                 context_used = mini_method_check_context_used (cfg, cmethod);
13072
13073                                 cil_method = cmethod;
13074                                 if (!dont_verify && !cfg->skip_visibility && !mono_method_can_access_method (method, cmethod))
13075                                         METHOD_ACCESS_FAILURE (method, cil_method);
13076
13077                                 if (mono_security_core_clr_enabled ())
13078                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13079
13080                                 /*
13081                                  * Optimize the common case of ldftn+delegate creation
13082                                  */
13083                                 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, cfg->cbb, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
13084                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13085                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13086                                                 MonoInst *target_ins, *handle_ins;
13087                                                 MonoMethod *invoke;
13088                                                 int invoke_context_used;
13089
13090                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13091                                                 if (!invoke || !mono_method_signature (invoke))
13092                                                         LOAD_ERROR;
13093
13094                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13095
13096                                                 target_ins = sp [-1];
13097
13098                                                 if (mono_security_core_clr_enabled ())
13099                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13100
13101                                                 if (!(cmethod->flags & METHOD_ATTRIBUTE_STATIC)) {
13102                                                         /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
13103                                                         if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
13104                                                                 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_COMPARE_IMM, -1, target_ins->dreg, 0);
13105                                                                 MONO_EMIT_NEW_COND_EXC (cfg, EQ, "ArgumentException");
13106                                                         }
13107                                                 }
13108
13109                                                 /* FIXME: SGEN support */
13110                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13111                                                         ip += 6;
13112                                                         if (cfg->verbose_level > 3)
13113                                                                 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));
13114                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, FALSE))) {
13115                                                                 sp --;
13116                                                                 *sp = handle_ins;
13117                                                                 CHECK_CFG_EXCEPTION;
13118                                                                 ip += 5;
13119                                                                 sp ++;
13120                                                                 break;
13121                                                         }
13122                                                         ip -= 6;
13123                                                 }
13124                                         }
13125                                 }
13126
13127                                 argconst = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_METHOD);
13128                                 ins = mono_emit_jit_icall (cfg, mono_ldftn, &argconst);
13129                                 *sp++ = ins;
13130
13131                                 ip += 6;
13132                                 inline_costs += 10 * num_calls++;
13133                                 break;
13134                         }
13135                         case CEE_LDVIRTFTN: {
13136                                 MonoInst *args [2];
13137
13138                                 CHECK_STACK (1);
13139                                 CHECK_OPSIZE (6);
13140                                 n = read32 (ip + 2);
13141                                 cmethod = mini_get_method (cfg, method, n, NULL, generic_context);
13142                                 CHECK_CFG_ERROR;
13143
13144                                 mono_class_init (cmethod->klass);
13145
13146                                 context_used = mini_method_check_context_used (cfg, cmethod);
13147
13148                                 if (mono_security_core_clr_enabled ())
13149                                         ensure_method_is_allowed_to_call_method (cfg, method, cmethod);
13150
13151                                 /*
13152                                  * Optimize the common case of ldvirtftn+delegate creation
13153                                  */
13154                                 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)) {
13155                                         MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
13156                                         if (ctor_method && (ctor_method->klass->parent == mono_defaults.multicastdelegate_class)) {
13157                                                 MonoInst *target_ins, *handle_ins;
13158                                                 MonoMethod *invoke;
13159                                                 int invoke_context_used;
13160                                                 gboolean is_virtual = cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL;
13161
13162                                                 invoke = mono_get_delegate_invoke (ctor_method->klass);
13163                                                 if (!invoke || !mono_method_signature (invoke))
13164                                                         LOAD_ERROR;
13165
13166                                                 invoke_context_used = mini_method_check_context_used (cfg, invoke);
13167
13168                                                 target_ins = sp [-1];
13169
13170                                                 if (mono_security_core_clr_enabled ())
13171                                                         ensure_method_is_allowed_to_call_method (cfg, method, ctor_method);
13172
13173                                                 /* FIXME: SGEN support */
13174                                                 if (invoke_context_used == 0 || cfg->llvm_only) {
13175                                                         ip += 6;
13176                                                         if (cfg->verbose_level > 3)
13177                                                                 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));
13178                                                         if ((handle_ins = handle_delegate_ctor (cfg, ctor_method->klass, target_ins, cmethod, context_used, is_virtual))) {
13179                                                                 sp -= 2;
13180                                                                 *sp = handle_ins;
13181                                                                 CHECK_CFG_EXCEPTION;
13182                                                                 ip += 5;
13183                                                                 sp ++;
13184                                                                 break;
13185                                                         }
13186                                                         ip -= 6;
13187                                                 }
13188                                         }
13189                                 }
13190
13191                                 --sp;
13192                                 args [0] = *sp;
13193
13194                                 args [1] = emit_get_rgctx_method (cfg, context_used,
13195                                                                                                   cmethod, MONO_RGCTX_INFO_METHOD);
13196
13197                                 if (context_used)
13198                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn_gshared, args);
13199                                 else
13200                                         *sp++ = mono_emit_jit_icall (cfg, mono_ldvirtfn, args);
13201
13202                                 ip += 6;
13203                                 inline_costs += 10 * num_calls++;
13204                                 break;
13205                         }
13206                         case CEE_LDARG:
13207                                 CHECK_STACK_OVF (1);
13208                                 CHECK_OPSIZE (4);
13209                                 n = read16 (ip + 2);
13210                                 CHECK_ARG (n);
13211                                 EMIT_NEW_ARGLOAD (cfg, ins, n);
13212                                 *sp++ = ins;
13213                                 ip += 4;
13214                                 break;
13215                         case CEE_LDARGA:
13216                                 CHECK_STACK_OVF (1);
13217                                 CHECK_OPSIZE (4);
13218                                 n = read16 (ip + 2);
13219                                 CHECK_ARG (n);
13220                                 NEW_ARGLOADA (cfg, ins, n);
13221                                 MONO_ADD_INS (cfg->cbb, ins);
13222                                 *sp++ = ins;
13223                                 ip += 4;
13224                                 break;
13225                         case CEE_STARG:
13226                                 CHECK_STACK (1);
13227                                 --sp;
13228                                 CHECK_OPSIZE (4);
13229                                 n = read16 (ip + 2);
13230                                 CHECK_ARG (n);
13231                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, param_types [n], *sp))
13232                                         UNVERIFIED;
13233                                 EMIT_NEW_ARGSTORE (cfg, ins, n, *sp);
13234                                 ip += 4;
13235                                 break;
13236                         case CEE_LDLOC:
13237                                 CHECK_STACK_OVF (1);
13238                                 CHECK_OPSIZE (4);
13239                                 n = read16 (ip + 2);
13240                                 CHECK_LOCAL (n);
13241                                 EMIT_NEW_LOCLOAD (cfg, ins, n);
13242                                 *sp++ = ins;
13243                                 ip += 4;
13244                                 break;
13245                         case CEE_LDLOCA: {
13246                                 unsigned char *tmp_ip;
13247                                 CHECK_STACK_OVF (1);
13248                                 CHECK_OPSIZE (4);
13249                                 n = read16 (ip + 2);
13250                                 CHECK_LOCAL (n);
13251
13252                                 if ((tmp_ip = emit_optimized_ldloca_ir (cfg, ip, end, 2))) {
13253                                         ip = tmp_ip;
13254                                         inline_costs += 1;
13255                                         break;
13256                                 }
13257
13258                                 EMIT_NEW_LOCLOADA (cfg, ins, n);
13259                                 *sp++ = ins;
13260                                 ip += 4;
13261                                 break;
13262                         }
13263                         case CEE_STLOC:
13264                                 CHECK_STACK (1);
13265                                 --sp;
13266                                 CHECK_OPSIZE (4);
13267                                 n = read16 (ip + 2);
13268                                 CHECK_LOCAL (n);
13269                                 if (!dont_verify_stloc && target_type_is_incompatible (cfg, header->locals [n], *sp))
13270                                         UNVERIFIED;
13271                                 emit_stloc_ir (cfg, sp, header, n);
13272                                 ip += 4;
13273                                 inline_costs += 1;
13274                                 break;
13275                         case CEE_LOCALLOC:
13276                                 CHECK_STACK (1);
13277                                 --sp;
13278                                 if (sp != stack_start)
13279                                         UNVERIFIED;
13280                                 if (cfg->method != method)
13281                                         /*
13282                                          * Inlining this into a loop in a parent could lead to
13283                                          * stack overflows which is different behavior than the
13284                                          * non-inlined case, thus disable inlining in this case.
13285                                          */
13286                                         INLINE_FAILURE("localloc");
13287
13288                                 MONO_INST_NEW (cfg, ins, OP_LOCALLOC);
13289                                 ins->dreg = alloc_preg (cfg);
13290                                 ins->sreg1 = sp [0]->dreg;
13291                                 ins->type = STACK_PTR;
13292                                 MONO_ADD_INS (cfg->cbb, ins);
13293
13294                                 cfg->flags |= MONO_CFG_HAS_ALLOCA;
13295                                 if (init_locals)
13296                                         ins->flags |= MONO_INST_INIT;
13297
13298                                 *sp++ = ins;
13299                                 ip += 2;
13300                                 break;
13301                         case CEE_ENDFILTER: {
13302                                 MonoExceptionClause *clause, *nearest;
13303                                 int cc;
13304
13305                                 CHECK_STACK (1);
13306                                 --sp;
13307                                 if ((sp != stack_start) || (sp [0]->type != STACK_I4))
13308                                         UNVERIFIED;
13309                                 MONO_INST_NEW (cfg, ins, OP_ENDFILTER);
13310                                 ins->sreg1 = (*sp)->dreg;
13311                                 MONO_ADD_INS (cfg->cbb, ins);
13312                                 start_new_bblock = 1;
13313                                 ip += 2;
13314
13315                                 nearest = NULL;
13316                                 for (cc = 0; cc < header->num_clauses; ++cc) {
13317                                         clause = &header->clauses [cc];
13318                                         if ((clause->flags & MONO_EXCEPTION_CLAUSE_FILTER) &&
13319                                                 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
13320                                             (!nearest || (clause->data.filter_offset < nearest->data.filter_offset)))
13321                                                 nearest = clause;
13322                                 }
13323                                 g_assert (nearest);
13324                                 if ((ip - header->code) != nearest->handler_offset)
13325                                         UNVERIFIED;
13326
13327                                 break;
13328                         }
13329                         case CEE_UNALIGNED_:
13330                                 ins_flag |= MONO_INST_UNALIGNED;
13331                                 /* FIXME: record alignment? we can assume 1 for now */
13332                                 CHECK_OPSIZE (3);
13333                                 ip += 3;
13334                                 break;
13335                         case CEE_VOLATILE_:
13336                                 ins_flag |= MONO_INST_VOLATILE;
13337                                 ip += 2;
13338                                 break;
13339                         case CEE_TAIL_:
13340                                 ins_flag   |= MONO_INST_TAILCALL;
13341                                 cfg->flags |= MONO_CFG_HAS_TAIL;
13342                                 /* Can't inline tail calls at this time */
13343                                 inline_costs += 100000;
13344                                 ip += 2;
13345                                 break;
13346                         case CEE_INITOBJ:
13347                                 CHECK_STACK (1);
13348                                 --sp;
13349                                 CHECK_OPSIZE (6);
13350                                 token = read32 (ip + 2);
13351                                 klass = mini_get_class (method, token, generic_context);
13352                                 CHECK_TYPELOAD (klass);
13353                                 if (generic_class_is_reference_type (cfg, klass))
13354                                         MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, sp [0]->dreg, 0, 0);
13355                                 else
13356                                         mini_emit_initobj (cfg, *sp, NULL, klass);
13357                                 ip += 6;
13358                                 inline_costs += 1;
13359                                 break;
13360                         case CEE_CONSTRAINED_:
13361                                 CHECK_OPSIZE (6);
13362                                 token = read32 (ip + 2);
13363                                 constrained_class = mini_get_class (method, token, generic_context);
13364                                 CHECK_TYPELOAD (constrained_class);
13365                                 ip += 6;
13366                                 break;
13367                         case CEE_CPBLK:
13368                         case CEE_INITBLK: {
13369                                 MonoInst *iargs [3];
13370                                 CHECK_STACK (3);
13371                                 sp -= 3;
13372
13373                                 /* Skip optimized paths for volatile operations. */
13374                                 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)) {
13375                                         mini_emit_memcpy (cfg, sp [0]->dreg, 0, sp [1]->dreg, 0, sp [2]->inst_c0, 0);
13376                                 } 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)) {
13377                                         /* emit_memset only works when val == 0 */
13378                                         mini_emit_memset (cfg, sp [0]->dreg, 0, sp [2]->inst_c0, sp [1]->inst_c0, 0);
13379                                 } else {
13380                                         MonoInst *call;
13381                                         iargs [0] = sp [0];
13382                                         iargs [1] = sp [1];
13383                                         iargs [2] = sp [2];
13384                                         if (ip [1] == CEE_CPBLK) {
13385                                                 /*
13386                                                  * FIXME: It's unclear whether we should be emitting both the acquire
13387                                                  * and release barriers for cpblk. It is technically both a load and
13388                                                  * store operation, so it seems like that's the sensible thing to do.
13389                                                  *
13390                                                  * FIXME: We emit full barriers on both sides of the operation for
13391                                                  * simplicity. We should have a separate atomic memcpy method instead.
13392                                                  */
13393                                                 MonoMethod *memcpy_method = get_memcpy_method ();
13394
13395                                                 if (ins_flag & MONO_INST_VOLATILE)
13396                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13397
13398                                                 call = mono_emit_method_call (cfg, memcpy_method, iargs, NULL);
13399                                                 call->flags |= ins_flag;
13400
13401                                                 if (ins_flag & MONO_INST_VOLATILE)
13402                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_SEQ);
13403                                         } else {
13404                                                 MonoMethod *memset_method = get_memset_method ();
13405                                                 if (ins_flag & MONO_INST_VOLATILE) {
13406                                                         /* Volatile stores have release semantics, see 12.6.7 in Ecma 335 */
13407                                                         emit_memory_barrier (cfg, MONO_MEMORY_BARRIER_REL);
13408                                                 }
13409                                                 call = mono_emit_method_call (cfg, memset_method, iargs, NULL);
13410                                                 call->flags |= ins_flag;
13411                                         }
13412                                 }
13413                                 ip += 2;
13414                                 ins_flag = 0;
13415                                 inline_costs += 1;
13416                                 break;
13417                         }
13418                         case CEE_NO_:
13419                                 CHECK_OPSIZE (3);
13420                                 if (ip [2] & 0x1)
13421                                         ins_flag |= MONO_INST_NOTYPECHECK;
13422                                 if (ip [2] & 0x2)
13423                                         ins_flag |= MONO_INST_NORANGECHECK;
13424                                 /* we ignore the no-nullcheck for now since we
13425                                  * really do it explicitly only when doing callvirt->call
13426                                  */
13427                                 ip += 3;
13428                                 break;
13429                         case CEE_RETHROW: {
13430                                 MonoInst *load;
13431                                 int handler_offset = -1;
13432
13433                                 for (i = 0; i < header->num_clauses; ++i) {
13434                                         MonoExceptionClause *clause = &header->clauses [i];
13435                                         if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
13436                                                 handler_offset = clause->handler_offset;
13437                                                 break;
13438                                         }
13439                                 }
13440
13441                                 cfg->cbb->flags |= BB_EXCEPTION_UNSAFE;
13442
13443                                 if (handler_offset == -1)
13444                                         UNVERIFIED;
13445
13446                                 EMIT_NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, handler_offset)->inst_c0);
13447                                 MONO_INST_NEW (cfg, ins, OP_RETHROW);
13448                                 ins->sreg1 = load->dreg;
13449                                 MONO_ADD_INS (cfg->cbb, ins);
13450
13451                                 MONO_INST_NEW (cfg, ins, OP_NOT_REACHED);
13452                                 MONO_ADD_INS (cfg->cbb, ins);
13453
13454                                 sp = stack_start;
13455                                 link_bblock (cfg, cfg->cbb, end_bblock);
13456                                 start_new_bblock = 1;
13457                                 ip += 2;
13458                                 break;
13459                         }
13460                         case CEE_SIZEOF: {
13461                                 guint32 val;
13462                                 int ialign;
13463
13464                                 CHECK_STACK_OVF (1);
13465                                 CHECK_OPSIZE (6);
13466                                 token = read32 (ip + 2);
13467                                 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !image_is_dynamic (method->klass->image) && !generic_context) {
13468                                         MonoType *type = mono_type_create_from_typespec_checked (image, token, &cfg->error);
13469                                         CHECK_CFG_ERROR;
13470
13471                                         val = mono_type_size (type, &ialign);
13472                                 } else {
13473                                         MonoClass *klass = mini_get_class (method, token, generic_context);
13474                                         CHECK_TYPELOAD (klass);
13475
13476                                         val = mono_type_size (&klass->byval_arg, &ialign);
13477
13478                                         if (mini_is_gsharedvt_klass (klass))
13479                                                 GSHAREDVT_FAILURE (*ip);
13480                                 }
13481                                 EMIT_NEW_ICONST (cfg, ins, val);
13482                                 *sp++= ins;
13483                                 ip += 6;
13484                                 break;
13485                         }
13486                         case CEE_REFANYTYPE: {
13487                                 MonoInst *src_var, *src;
13488
13489                                 GSHAREDVT_FAILURE (*ip);
13490
13491                                 CHECK_STACK (1);
13492                                 --sp;
13493
13494                                 // FIXME:
13495                                 src_var = get_vreg_to_inst (cfg, sp [0]->dreg);
13496                                 if (!src_var)
13497                                         src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
13498                                 EMIT_NEW_VARLOADA (cfg, src, src_var, src_var->inst_vtype);
13499                                 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, MONO_STRUCT_OFFSET (MonoTypedRef, type));
13500                                 *sp++ = ins;
13501                                 ip += 2;
13502                                 break;
13503                         }
13504                         case CEE_READONLY_:
13505                                 readonly = TRUE;
13506                                 ip += 2;
13507                                 break;
13508
13509                         case CEE_UNUSED56:
13510                         case CEE_UNUSED57:
13511                         case CEE_UNUSED70:
13512                         case CEE_UNUSED:
13513                         case CEE_UNUSED99:
13514                                 UNVERIFIED;
13515
13516                         default:
13517                                 g_warning ("opcode 0xfe 0x%02x not handled", ip [1]);
13518                                 UNVERIFIED;
13519                         }
13520                         break;
13521                 }
13522                 case CEE_UNUSED58:
13523                 case CEE_UNUSED1:
13524                         UNVERIFIED;
13525
13526                 default:
13527                         g_warning ("opcode 0x%02x not handled", *ip);
13528                         UNVERIFIED;
13529                 }
13530         }
13531         if (start_new_bblock != 1)
13532                 UNVERIFIED;
13533
13534         cfg->cbb->cil_length = ip - cfg->cbb->cil_code;
13535         if (cfg->cbb->next_bb) {
13536                 /* This could already be set because of inlining, #693905 */
13537                 MonoBasicBlock *bb = cfg->cbb;
13538
13539                 while (bb->next_bb)
13540                         bb = bb->next_bb;
13541                 bb->next_bb = end_bblock;
13542         } else {
13543                 cfg->cbb->next_bb = end_bblock;
13544         }
13545
13546         if (cfg->method == method && cfg->domainvar) {
13547                 MonoInst *store;
13548                 MonoInst *get_domain;
13549
13550                 cfg->cbb = init_localsbb;
13551
13552                 if ((get_domain = mono_get_domain_intrinsic (cfg))) {
13553                         MONO_ADD_INS (cfg->cbb, get_domain);
13554                 } else {
13555                         get_domain = mono_emit_jit_icall (cfg, mono_domain_get, NULL);
13556                 }
13557                 NEW_TEMPSTORE (cfg, store, cfg->domainvar->inst_c0, get_domain);
13558                 MONO_ADD_INS (cfg->cbb, store);
13559         }
13560
13561 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
13562         if (cfg->compile_aot)
13563                 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
13564                 mono_get_got_var (cfg);
13565 #endif
13566
13567         if (cfg->method == method && cfg->got_var)
13568                 mono_emit_load_got_addr (cfg);
13569
13570         if (init_localsbb) {
13571                 cfg->cbb = init_localsbb;
13572                 cfg->ip = NULL;
13573                 for (i = 0; i < header->num_locals; ++i) {
13574                         emit_init_local (cfg, i, header->locals [i], init_locals);
13575                 }
13576         }
13577
13578         if (cfg->init_ref_vars && cfg->method == method) {
13579                 /* Emit initialization for ref vars */
13580                 // FIXME: Avoid duplication initialization for IL locals.
13581                 for (i = 0; i < cfg->num_varinfo; ++i) {
13582                         MonoInst *ins = cfg->varinfo [i];
13583
13584                         if (ins->opcode == OP_LOCAL && ins->type == STACK_OBJ)
13585                                 MONO_EMIT_NEW_PCONST (cfg, ins->dreg, NULL);
13586                 }
13587         }
13588
13589         if (cfg->lmf_var && cfg->method == method && !cfg->llvm_only) {
13590                 cfg->cbb = init_localsbb;
13591                 emit_push_lmf (cfg);
13592         }
13593
13594         cfg->cbb = init_localsbb;
13595         emit_instrumentation_call (cfg, mono_profiler_method_enter);
13596
13597         if (seq_points) {
13598                 MonoBasicBlock *bb;
13599
13600                 /*
13601                  * Make seq points at backward branch targets interruptable.
13602                  */
13603                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
13604                         if (bb->code && bb->in_count > 1 && bb->code->opcode == OP_SEQ_POINT)
13605                                 bb->code->flags |= MONO_INST_SINGLE_STEP_LOC;
13606         }
13607
13608         /* Add a sequence point for method entry/exit events */
13609         if (seq_points && cfg->gen_sdb_seq_points) {
13610                 NEW_SEQ_POINT (cfg, ins, METHOD_ENTRY_IL_OFFSET, FALSE);
13611                 MONO_ADD_INS (init_localsbb, ins);
13612                 NEW_SEQ_POINT (cfg, ins, METHOD_EXIT_IL_OFFSET, FALSE);
13613                 MONO_ADD_INS (cfg->bb_exit, ins);
13614         }
13615
13616         /*
13617          * Add seq points for IL offsets which have line number info, but wasn't generated a seq point during JITting because
13618          * the code they refer to was dead (#11880).
13619          */
13620         if (sym_seq_points) {
13621                 for (i = 0; i < header->code_size; ++i) {
13622                         if (mono_bitset_test_fast (seq_point_locs, i) && !mono_bitset_test_fast (seq_point_set_locs, i)) {
13623                                 MonoInst *ins;
13624
13625                                 NEW_SEQ_POINT (cfg, ins, i, FALSE);
13626                                 mono_add_seq_point (cfg, NULL, ins, SEQ_POINT_NATIVE_OFFSET_DEAD_CODE);
13627                         }
13628                 }
13629         }
13630
13631         cfg->ip = NULL;
13632
13633         if (cfg->method == method) {
13634                 MonoBasicBlock *bb;
13635                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
13636                         bb->region = mono_find_block_region (cfg, bb->real_offset);
13637                         if (cfg->spvars)
13638                                 mono_create_spvar_for_region (cfg, bb->region);
13639                         if (cfg->verbose_level > 2)
13640                                 printf ("REGION BB%d IL_%04x ID_%08X\n", bb->block_num, bb->real_offset, bb->region);
13641                 }
13642         }
13643
13644         if (inline_costs < 0) {
13645                 char *mname;
13646
13647                 /* Method is too large */
13648                 mname = mono_method_full_name (method, TRUE);
13649                 mono_cfg_set_exception_invalid_program (cfg, g_strdup_printf ("Method %s is too complex.", mname));
13650                 g_free (mname);
13651         }
13652
13653         if ((cfg->verbose_level > 2) && (cfg->method == method))
13654                 mono_print_code (cfg, "AFTER METHOD-TO-IR");
13655
13656         goto cleanup;
13657
13658 mono_error_exit:
13659         g_assert (!mono_error_ok (&cfg->error));
13660         goto cleanup;
13661
13662  exception_exit:
13663         g_assert (cfg->exception_type != MONO_EXCEPTION_NONE);
13664         goto cleanup;
13665
13666  unverified:
13667         set_exception_type_from_invalid_il (cfg, method, ip);
13668         goto cleanup;
13669
13670  cleanup:
13671         g_slist_free (class_inits);
13672         mono_basic_block_free (original_bb);
13673         cfg->dont_inline = g_list_remove (cfg->dont_inline, method);
13674         cfg->headers_to_free = g_slist_prepend_mempool (cfg->mempool, cfg->headers_to_free, header);
13675         if (cfg->exception_type)
13676                 return -1;
13677         else
13678                 return inline_costs;
13679 }
13680
13681 static int
13682 store_membase_reg_to_store_membase_imm (int opcode)
13683 {
13684         switch (opcode) {
13685         case OP_STORE_MEMBASE_REG:
13686                 return OP_STORE_MEMBASE_IMM;
13687         case OP_STOREI1_MEMBASE_REG:
13688                 return OP_STOREI1_MEMBASE_IMM;
13689         case OP_STOREI2_MEMBASE_REG:
13690                 return OP_STOREI2_MEMBASE_IMM;
13691         case OP_STOREI4_MEMBASE_REG:
13692                 return OP_STOREI4_MEMBASE_IMM;
13693         case OP_STOREI8_MEMBASE_REG:
13694                 return OP_STOREI8_MEMBASE_IMM;
13695         default:
13696                 g_assert_not_reached ();
13697         }
13698
13699         return -1;
13700 }
13701
13702 int
13703 mono_op_to_op_imm (int opcode)
13704 {
13705         switch (opcode) {
13706         case OP_IADD:
13707                 return OP_IADD_IMM;
13708         case OP_ISUB:
13709                 return OP_ISUB_IMM;
13710         case OP_IDIV:
13711                 return OP_IDIV_IMM;
13712         case OP_IDIV_UN:
13713                 return OP_IDIV_UN_IMM;
13714         case OP_IREM:
13715                 return OP_IREM_IMM;
13716         case OP_IREM_UN:
13717                 return OP_IREM_UN_IMM;
13718         case OP_IMUL:
13719                 return OP_IMUL_IMM;
13720         case OP_IAND:
13721                 return OP_IAND_IMM;
13722         case OP_IOR:
13723                 return OP_IOR_IMM;
13724         case OP_IXOR:
13725                 return OP_IXOR_IMM;
13726         case OP_ISHL:
13727                 return OP_ISHL_IMM;
13728         case OP_ISHR:
13729                 return OP_ISHR_IMM;
13730         case OP_ISHR_UN:
13731                 return OP_ISHR_UN_IMM;
13732
13733         case OP_LADD:
13734                 return OP_LADD_IMM;
13735         case OP_LSUB:
13736                 return OP_LSUB_IMM;
13737         case OP_LAND:
13738                 return OP_LAND_IMM;
13739         case OP_LOR:
13740                 return OP_LOR_IMM;
13741         case OP_LXOR:
13742                 return OP_LXOR_IMM;
13743         case OP_LSHL:
13744                 return OP_LSHL_IMM;
13745         case OP_LSHR:
13746                 return OP_LSHR_IMM;
13747         case OP_LSHR_UN:
13748                 return OP_LSHR_UN_IMM;
13749 #if SIZEOF_REGISTER == 8
13750         case OP_LREM:
13751                 return OP_LREM_IMM;
13752 #endif
13753
13754         case OP_COMPARE:
13755                 return OP_COMPARE_IMM;
13756         case OP_ICOMPARE:
13757                 return OP_ICOMPARE_IMM;
13758         case OP_LCOMPARE:
13759                 return OP_LCOMPARE_IMM;
13760
13761         case OP_STORE_MEMBASE_REG:
13762                 return OP_STORE_MEMBASE_IMM;
13763         case OP_STOREI1_MEMBASE_REG:
13764                 return OP_STOREI1_MEMBASE_IMM;
13765         case OP_STOREI2_MEMBASE_REG:
13766                 return OP_STOREI2_MEMBASE_IMM;
13767         case OP_STOREI4_MEMBASE_REG:
13768                 return OP_STOREI4_MEMBASE_IMM;
13769
13770 #if defined(TARGET_X86) || defined (TARGET_AMD64)
13771         case OP_X86_PUSH:
13772                 return OP_X86_PUSH_IMM;
13773         case OP_X86_COMPARE_MEMBASE_REG:
13774                 return OP_X86_COMPARE_MEMBASE_IMM;
13775 #endif
13776 #if defined(TARGET_AMD64)
13777         case OP_AMD64_ICOMPARE_MEMBASE_REG:
13778                 return OP_AMD64_ICOMPARE_MEMBASE_IMM;
13779 #endif
13780         case OP_VOIDCALL_REG:
13781                 return OP_VOIDCALL;
13782         case OP_CALL_REG:
13783                 return OP_CALL;
13784         case OP_LCALL_REG:
13785                 return OP_LCALL;
13786         case OP_FCALL_REG:
13787                 return OP_FCALL;
13788         case OP_LOCALLOC:
13789                 return OP_LOCALLOC_IMM;
13790         }
13791
13792         return -1;
13793 }
13794
13795 static int
13796 ldind_to_load_membase (int opcode)
13797 {
13798         switch (opcode) {
13799         case CEE_LDIND_I1:
13800                 return OP_LOADI1_MEMBASE;
13801         case CEE_LDIND_U1:
13802                 return OP_LOADU1_MEMBASE;
13803         case CEE_LDIND_I2:
13804                 return OP_LOADI2_MEMBASE;
13805         case CEE_LDIND_U2:
13806                 return OP_LOADU2_MEMBASE;
13807         case CEE_LDIND_I4:
13808                 return OP_LOADI4_MEMBASE;
13809         case CEE_LDIND_U4:
13810                 return OP_LOADU4_MEMBASE;
13811         case CEE_LDIND_I:
13812                 return OP_LOAD_MEMBASE;
13813         case CEE_LDIND_REF:
13814                 return OP_LOAD_MEMBASE;
13815         case CEE_LDIND_I8:
13816                 return OP_LOADI8_MEMBASE;
13817         case CEE_LDIND_R4:
13818                 return OP_LOADR4_MEMBASE;
13819         case CEE_LDIND_R8:
13820                 return OP_LOADR8_MEMBASE;
13821         default:
13822                 g_assert_not_reached ();
13823         }
13824
13825         return -1;
13826 }
13827
13828 static int
13829 stind_to_store_membase (int opcode)
13830 {
13831         switch (opcode) {
13832         case CEE_STIND_I1:
13833                 return OP_STOREI1_MEMBASE_REG;
13834         case CEE_STIND_I2:
13835                 return OP_STOREI2_MEMBASE_REG;
13836         case CEE_STIND_I4:
13837                 return OP_STOREI4_MEMBASE_REG;
13838         case CEE_STIND_I:
13839         case CEE_STIND_REF:
13840                 return OP_STORE_MEMBASE_REG;
13841         case CEE_STIND_I8:
13842                 return OP_STOREI8_MEMBASE_REG;
13843         case CEE_STIND_R4:
13844                 return OP_STORER4_MEMBASE_REG;
13845         case CEE_STIND_R8:
13846                 return OP_STORER8_MEMBASE_REG;
13847         default:
13848                 g_assert_not_reached ();
13849         }
13850
13851         return -1;
13852 }
13853
13854 int
13855 mono_load_membase_to_load_mem (int opcode)
13856 {
13857         // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
13858 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13859         switch (opcode) {
13860         case OP_LOAD_MEMBASE:
13861                 return OP_LOAD_MEM;
13862         case OP_LOADU1_MEMBASE:
13863                 return OP_LOADU1_MEM;
13864         case OP_LOADU2_MEMBASE:
13865                 return OP_LOADU2_MEM;
13866         case OP_LOADI4_MEMBASE:
13867                 return OP_LOADI4_MEM;
13868         case OP_LOADU4_MEMBASE:
13869                 return OP_LOADU4_MEM;
13870 #if SIZEOF_REGISTER == 8
13871         case OP_LOADI8_MEMBASE:
13872                 return OP_LOADI8_MEM;
13873 #endif
13874         }
13875 #endif
13876
13877         return -1;
13878 }
13879
13880 static inline int
13881 op_to_op_dest_membase (int store_opcode, int opcode)
13882 {
13883 #if defined(TARGET_X86)
13884         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG)))
13885                 return -1;
13886
13887         switch (opcode) {
13888         case OP_IADD:
13889                 return OP_X86_ADD_MEMBASE_REG;
13890         case OP_ISUB:
13891                 return OP_X86_SUB_MEMBASE_REG;
13892         case OP_IAND:
13893                 return OP_X86_AND_MEMBASE_REG;
13894         case OP_IOR:
13895                 return OP_X86_OR_MEMBASE_REG;
13896         case OP_IXOR:
13897                 return OP_X86_XOR_MEMBASE_REG;
13898         case OP_ADD_IMM:
13899         case OP_IADD_IMM:
13900                 return OP_X86_ADD_MEMBASE_IMM;
13901         case OP_SUB_IMM:
13902         case OP_ISUB_IMM:
13903                 return OP_X86_SUB_MEMBASE_IMM;
13904         case OP_AND_IMM:
13905         case OP_IAND_IMM:
13906                 return OP_X86_AND_MEMBASE_IMM;
13907         case OP_OR_IMM:
13908         case OP_IOR_IMM:
13909                 return OP_X86_OR_MEMBASE_IMM;
13910         case OP_XOR_IMM:
13911         case OP_IXOR_IMM:
13912                 return OP_X86_XOR_MEMBASE_IMM;
13913         case OP_MOVE:
13914                 return OP_NOP;
13915         }
13916 #endif
13917
13918 #if defined(TARGET_AMD64)
13919         if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
13920                 return -1;
13921
13922         switch (opcode) {
13923         case OP_IADD:
13924                 return OP_X86_ADD_MEMBASE_REG;
13925         case OP_ISUB:
13926                 return OP_X86_SUB_MEMBASE_REG;
13927         case OP_IAND:
13928                 return OP_X86_AND_MEMBASE_REG;
13929         case OP_IOR:
13930                 return OP_X86_OR_MEMBASE_REG;
13931         case OP_IXOR:
13932                 return OP_X86_XOR_MEMBASE_REG;
13933         case OP_IADD_IMM:
13934                 return OP_X86_ADD_MEMBASE_IMM;
13935         case OP_ISUB_IMM:
13936                 return OP_X86_SUB_MEMBASE_IMM;
13937         case OP_IAND_IMM:
13938                 return OP_X86_AND_MEMBASE_IMM;
13939         case OP_IOR_IMM:
13940                 return OP_X86_OR_MEMBASE_IMM;
13941         case OP_IXOR_IMM:
13942                 return OP_X86_XOR_MEMBASE_IMM;
13943         case OP_LADD:
13944                 return OP_AMD64_ADD_MEMBASE_REG;
13945         case OP_LSUB:
13946                 return OP_AMD64_SUB_MEMBASE_REG;
13947         case OP_LAND:
13948                 return OP_AMD64_AND_MEMBASE_REG;
13949         case OP_LOR:
13950                 return OP_AMD64_OR_MEMBASE_REG;
13951         case OP_LXOR:
13952                 return OP_AMD64_XOR_MEMBASE_REG;
13953         case OP_ADD_IMM:
13954         case OP_LADD_IMM:
13955                 return OP_AMD64_ADD_MEMBASE_IMM;
13956         case OP_SUB_IMM:
13957         case OP_LSUB_IMM:
13958                 return OP_AMD64_SUB_MEMBASE_IMM;
13959         case OP_AND_IMM:
13960         case OP_LAND_IMM:
13961                 return OP_AMD64_AND_MEMBASE_IMM;
13962         case OP_OR_IMM:
13963         case OP_LOR_IMM:
13964                 return OP_AMD64_OR_MEMBASE_IMM;
13965         case OP_XOR_IMM:
13966         case OP_LXOR_IMM:
13967                 return OP_AMD64_XOR_MEMBASE_IMM;
13968         case OP_MOVE:
13969                 return OP_NOP;
13970         }
13971 #endif
13972
13973         return -1;
13974 }
13975
13976 static inline int
13977 op_to_op_store_membase (int store_opcode, int opcode)
13978 {
13979 #if defined(TARGET_X86) || defined(TARGET_AMD64)
13980         switch (opcode) {
13981         case OP_ICEQ:
13982                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13983                         return OP_X86_SETEQ_MEMBASE;
13984         case OP_CNE:
13985                 if (store_opcode == OP_STOREI1_MEMBASE_REG)
13986                         return OP_X86_SETNE_MEMBASE;
13987         }
13988 #endif
13989
13990         return -1;
13991 }
13992
13993 static inline int
13994 op_to_op_src1_membase (MonoCompile *cfg, int load_opcode, int opcode)
13995 {
13996 #ifdef TARGET_X86
13997         /* FIXME: This has sign extension issues */
13998         /*
13999         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14000                 return OP_X86_COMPARE_MEMBASE8_IMM;
14001         */
14002
14003         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14004                 return -1;
14005
14006         switch (opcode) {
14007         case OP_X86_PUSH:
14008                 return OP_X86_PUSH_MEMBASE;
14009         case OP_COMPARE_IMM:
14010         case OP_ICOMPARE_IMM:
14011                 return OP_X86_COMPARE_MEMBASE_IMM;
14012         case OP_COMPARE:
14013         case OP_ICOMPARE:
14014                 return OP_X86_COMPARE_MEMBASE_REG;
14015         }
14016 #endif
14017
14018 #ifdef TARGET_AMD64
14019         /* FIXME: This has sign extension issues */
14020         /*
14021         if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
14022                 return OP_X86_COMPARE_MEMBASE8_IMM;
14023         */
14024
14025         switch (opcode) {
14026         case OP_X86_PUSH:
14027                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14028                         return OP_X86_PUSH_MEMBASE;
14029                 break;
14030                 /* FIXME: This only works for 32 bit immediates
14031         case OP_COMPARE_IMM:
14032         case OP_LCOMPARE_IMM:
14033                 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
14034                         return OP_AMD64_COMPARE_MEMBASE_IMM;
14035                 */
14036         case OP_ICOMPARE_IMM:
14037                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14038                         return OP_AMD64_ICOMPARE_MEMBASE_IMM;
14039                 break;
14040         case OP_COMPARE:
14041         case OP_LCOMPARE:
14042                 if (cfg->backend->ilp32 && load_opcode == OP_LOAD_MEMBASE)
14043                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14044                 if ((load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32) || (load_opcode == OP_LOADI8_MEMBASE))
14045                         return OP_AMD64_COMPARE_MEMBASE_REG;
14046                 break;
14047         case OP_ICOMPARE:
14048                 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE))
14049                         return OP_AMD64_ICOMPARE_MEMBASE_REG;
14050                 break;
14051         }
14052 #endif
14053
14054         return -1;
14055 }
14056
14057 static inline int
14058 op_to_op_src2_membase (MonoCompile *cfg, int load_opcode, int opcode)
14059 {
14060 #ifdef TARGET_X86
14061         if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
14062                 return -1;
14063
14064         switch (opcode) {
14065         case OP_COMPARE:
14066         case OP_ICOMPARE:
14067                 return OP_X86_COMPARE_REG_MEMBASE;
14068         case OP_IADD:
14069                 return OP_X86_ADD_REG_MEMBASE;
14070         case OP_ISUB:
14071                 return OP_X86_SUB_REG_MEMBASE;
14072         case OP_IAND:
14073                 return OP_X86_AND_REG_MEMBASE;
14074         case OP_IOR:
14075                 return OP_X86_OR_REG_MEMBASE;
14076         case OP_IXOR:
14077                 return OP_X86_XOR_REG_MEMBASE;
14078         }
14079 #endif
14080
14081 #ifdef TARGET_AMD64
14082         if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && cfg->backend->ilp32)) {
14083                 switch (opcode) {
14084                 case OP_ICOMPARE:
14085                         return OP_AMD64_ICOMPARE_REG_MEMBASE;
14086                 case OP_IADD:
14087                         return OP_X86_ADD_REG_MEMBASE;
14088                 case OP_ISUB:
14089                         return OP_X86_SUB_REG_MEMBASE;
14090                 case OP_IAND:
14091                         return OP_X86_AND_REG_MEMBASE;
14092                 case OP_IOR:
14093                         return OP_X86_OR_REG_MEMBASE;
14094                 case OP_IXOR:
14095                         return OP_X86_XOR_REG_MEMBASE;
14096                 }
14097         } else if ((load_opcode == OP_LOADI8_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE && !cfg->backend->ilp32)) {
14098                 switch (opcode) {
14099                 case OP_COMPARE:
14100                 case OP_LCOMPARE:
14101                         return OP_AMD64_COMPARE_REG_MEMBASE;
14102                 case OP_LADD:
14103                         return OP_AMD64_ADD_REG_MEMBASE;
14104                 case OP_LSUB:
14105                         return OP_AMD64_SUB_REG_MEMBASE;
14106                 case OP_LAND:
14107                         return OP_AMD64_AND_REG_MEMBASE;
14108                 case OP_LOR:
14109                         return OP_AMD64_OR_REG_MEMBASE;
14110                 case OP_LXOR:
14111                         return OP_AMD64_XOR_REG_MEMBASE;
14112                 }
14113         }
14114 #endif
14115
14116         return -1;
14117 }
14118
14119 int
14120 mono_op_to_op_imm_noemul (int opcode)
14121 {
14122         switch (opcode) {
14123 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
14124         case OP_LSHR:
14125         case OP_LSHL:
14126         case OP_LSHR_UN:
14127                 return -1;
14128 #endif
14129 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
14130         case OP_IDIV:
14131         case OP_IDIV_UN:
14132         case OP_IREM:
14133         case OP_IREM_UN:
14134                 return -1;
14135 #endif
14136 #if defined(MONO_ARCH_EMULATE_MUL_DIV)
14137         case OP_IMUL:
14138                 return -1;
14139 #endif
14140         default:
14141                 return mono_op_to_op_imm (opcode);
14142         }
14143 }
14144
14145 /**
14146  * mono_handle_global_vregs:
14147  *
14148  *   Make vregs used in more than one bblock 'global', i.e. allocate a variable
14149  * for them.
14150  */
14151 void
14152 mono_handle_global_vregs (MonoCompile *cfg)
14153 {
14154         gint32 *vreg_to_bb;
14155         MonoBasicBlock *bb;
14156         int i, pos;
14157
14158         vreg_to_bb = (gint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (gint32*) * cfg->next_vreg + 1);
14159
14160 #ifdef MONO_ARCH_SIMD_INTRINSICS
14161         if (cfg->uses_simd_intrinsics)
14162                 mono_simd_simplify_indirection (cfg);
14163 #endif
14164
14165         /* Find local vregs used in more than one bb */
14166         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14167                 MonoInst *ins = bb->code;
14168                 int block_num = bb->block_num;
14169
14170                 if (cfg->verbose_level > 2)
14171                         printf ("\nHANDLE-GLOBAL-VREGS BLOCK %d:\n", bb->block_num);
14172
14173                 cfg->cbb = bb;
14174                 for (; ins; ins = ins->next) {
14175                         const char *spec = INS_INFO (ins->opcode);
14176                         int regtype = 0, regindex;
14177                         gint32 prev_bb;
14178
14179                         if (G_UNLIKELY (cfg->verbose_level > 2))
14180                                 mono_print_ins (ins);
14181
14182                         g_assert (ins->opcode >= MONO_CEE_LAST);
14183
14184                         for (regindex = 0; regindex < 4; regindex ++) {
14185                                 int vreg = 0;
14186
14187                                 if (regindex == 0) {
14188                                         regtype = spec [MONO_INST_DEST];
14189                                         if (regtype == ' ')
14190                                                 continue;
14191                                         vreg = ins->dreg;
14192                                 } else if (regindex == 1) {
14193                                         regtype = spec [MONO_INST_SRC1];
14194                                         if (regtype == ' ')
14195                                                 continue;
14196                                         vreg = ins->sreg1;
14197                                 } else if (regindex == 2) {
14198                                         regtype = spec [MONO_INST_SRC2];
14199                                         if (regtype == ' ')
14200                                                 continue;
14201                                         vreg = ins->sreg2;
14202                                 } else if (regindex == 3) {
14203                                         regtype = spec [MONO_INST_SRC3];
14204                                         if (regtype == ' ')
14205                                                 continue;
14206                                         vreg = ins->sreg3;
14207                                 }
14208
14209 #if SIZEOF_REGISTER == 4
14210                                 /* In the LLVM case, the long opcodes are not decomposed */
14211                                 if (regtype == 'l' && !COMPILE_LLVM (cfg)) {
14212                                         /*
14213                                          * Since some instructions reference the original long vreg,
14214                                          * and some reference the two component vregs, it is quite hard
14215                                          * to determine when it needs to be global. So be conservative.
14216                                          */
14217                                         if (!get_vreg_to_inst (cfg, vreg)) {
14218                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14219
14220                                                 if (cfg->verbose_level > 2)
14221                                                         printf ("LONG VREG R%d made global.\n", vreg);
14222                                         }
14223
14224                                         /*
14225                                          * Make the component vregs volatile since the optimizations can
14226                                          * get confused otherwise.
14227                                          */
14228                                         get_vreg_to_inst (cfg, MONO_LVREG_LS (vreg))->flags |= MONO_INST_VOLATILE;
14229                                         get_vreg_to_inst (cfg, MONO_LVREG_MS (vreg))->flags |= MONO_INST_VOLATILE;
14230                                 }
14231 #endif
14232
14233                                 g_assert (vreg != -1);
14234
14235                                 prev_bb = vreg_to_bb [vreg];
14236                                 if (prev_bb == 0) {
14237                                         /* 0 is a valid block num */
14238                                         vreg_to_bb [vreg] = block_num + 1;
14239                                 } else if ((prev_bb != block_num + 1) && (prev_bb != -1)) {
14240                                         if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
14241                                                 continue;
14242
14243                                         if (!get_vreg_to_inst (cfg, vreg)) {
14244                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14245                                                         printf ("VREG R%d used in BB%d and BB%d made global.\n", vreg, vreg_to_bb [vreg], block_num);
14246
14247                                                 switch (regtype) {
14248                                                 case 'i':
14249                                                         if (vreg_is_ref (cfg, vreg))
14250                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
14251                                                         else
14252                                                                 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL, vreg);
14253                                                         break;
14254                                                 case 'l':
14255                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
14256                                                         break;
14257                                                 case 'f':
14258                                                         mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
14259                                                         break;
14260                                                 case 'v':
14261                                                         mono_compile_create_var_for_vreg (cfg, &ins->klass->byval_arg, OP_LOCAL, vreg);
14262                                                         break;
14263                                                 default:
14264                                                         g_assert_not_reached ();
14265                                                 }
14266                                         }
14267
14268                                         /* Flag as having been used in more than one bb */
14269                                         vreg_to_bb [vreg] = -1;
14270                                 }
14271                         }
14272                 }
14273         }
14274
14275         /* If a variable is used in only one bblock, convert it into a local vreg */
14276         for (i = 0; i < cfg->num_varinfo; i++) {
14277                 MonoInst *var = cfg->varinfo [i];
14278                 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
14279
14280                 switch (var->type) {
14281                 case STACK_I4:
14282                 case STACK_OBJ:
14283                 case STACK_PTR:
14284                 case STACK_MP:
14285                 case STACK_VTYPE:
14286 #if SIZEOF_REGISTER == 8
14287                 case STACK_I8:
14288 #endif
14289 #if !defined(TARGET_X86)
14290                 /* Enabling this screws up the fp stack on x86 */
14291                 case STACK_R8:
14292 #endif
14293                         if (mono_arch_is_soft_float ())
14294                                 break;
14295
14296                         /*
14297                         if (var->type == STACK_VTYPE && cfg->gsharedvt && mini_is_gsharedvt_variable_type (var->inst_vtype))
14298                                 break;
14299                         */
14300
14301                         /* Arguments are implicitly global */
14302                         /* Putting R4 vars into registers doesn't work currently */
14303                         /* The gsharedvt vars are implicitly referenced by ldaddr opcodes, but those opcodes are only generated later */
14304                         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) {
14305                                 /*
14306                                  * Make that the variable's liveness interval doesn't contain a call, since
14307                                  * that would cause the lvreg to be spilled, making the whole optimization
14308                                  * useless.
14309                                  */
14310                                 /* This is too slow for JIT compilation */
14311 #if 0
14312                                 if (cfg->compile_aot && vreg_to_bb [var->dreg]) {
14313                                         MonoInst *ins;
14314                                         int def_index, call_index, ins_index;
14315                                         gboolean spilled = FALSE;
14316
14317                                         def_index = -1;
14318                                         call_index = -1;
14319                                         ins_index = 0;
14320                                         for (ins = vreg_to_bb [var->dreg]->code; ins; ins = ins->next) {
14321                                                 const char *spec = INS_INFO (ins->opcode);
14322
14323                                                 if ((spec [MONO_INST_DEST] != ' ') && (ins->dreg == var->dreg))
14324                                                         def_index = ins_index;
14325
14326                                                 if (((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg)) ||
14327                                                         ((spec [MONO_INST_SRC1] != ' ') && (ins->sreg1 == var->dreg))) {
14328                                                         if (call_index > def_index) {
14329                                                                 spilled = TRUE;
14330                                                                 break;
14331                                                         }
14332                                                 }
14333
14334                                                 if (MONO_IS_CALL (ins))
14335                                                         call_index = ins_index;
14336
14337                                                 ins_index ++;
14338                                         }
14339
14340                                         if (spilled)
14341                                                 break;
14342                                 }
14343 #endif
14344
14345                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14346                                         printf ("CONVERTED R%d(%d) TO VREG.\n", var->dreg, vmv->idx);
14347                                 var->flags |= MONO_INST_IS_DEAD;
14348                                 cfg->vreg_to_inst [var->dreg] = NULL;
14349                         }
14350                         break;
14351                 }
14352         }
14353
14354         /*
14355          * Compress the varinfo and vars tables so the liveness computation is faster and
14356          * takes up less space.
14357          */
14358         pos = 0;
14359         for (i = 0; i < cfg->num_varinfo; ++i) {
14360                 MonoInst *var = cfg->varinfo [i];
14361                 if (pos < i && cfg->locals_start == i)
14362                         cfg->locals_start = pos;
14363                 if (!(var->flags & MONO_INST_IS_DEAD)) {
14364                         if (pos < i) {
14365                                 cfg->varinfo [pos] = cfg->varinfo [i];
14366                                 cfg->varinfo [pos]->inst_c0 = pos;
14367                                 memcpy (&cfg->vars [pos], &cfg->vars [i], sizeof (MonoMethodVar));
14368                                 cfg->vars [pos].idx = pos;
14369 #if SIZEOF_REGISTER == 4
14370                                 if (cfg->varinfo [pos]->type == STACK_I8) {
14371                                         /* Modify the two component vars too */
14372                                         MonoInst *var1;
14373
14374                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_LS (cfg->varinfo [pos]->dreg));
14375                                         var1->inst_c0 = pos;
14376                                         var1 = get_vreg_to_inst (cfg, MONO_LVREG_MS (cfg->varinfo [pos]->dreg));
14377                                         var1->inst_c0 = pos;
14378                                 }
14379 #endif
14380                         }
14381                         pos ++;
14382                 }
14383         }
14384         cfg->num_varinfo = pos;
14385         if (cfg->locals_start > cfg->num_varinfo)
14386                 cfg->locals_start = cfg->num_varinfo;
14387 }
14388
14389 /*
14390  * mono_allocate_gsharedvt_vars:
14391  *
14392  *   Allocate variables with gsharedvt types to entries in the MonoGSharedVtMethodRuntimeInfo.entries array.
14393  * Initialize cfg->gsharedvt_vreg_to_idx with the mapping between vregs and indexes.
14394  */
14395 void
14396 mono_allocate_gsharedvt_vars (MonoCompile *cfg)
14397 {
14398         int i;
14399
14400         cfg->gsharedvt_vreg_to_idx = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * cfg->next_vreg);
14401
14402         for (i = 0; i < cfg->num_varinfo; ++i) {
14403                 MonoInst *ins = cfg->varinfo [i];
14404                 int idx;
14405
14406                 if (mini_is_gsharedvt_variable_type (ins->inst_vtype)) {
14407                         if (i >= cfg->locals_start) {
14408                                 /* Local */
14409                                 idx = get_gsharedvt_info_slot (cfg, ins->inst_vtype, MONO_RGCTX_INFO_LOCAL_OFFSET);
14410                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = idx + 1;
14411                                 ins->opcode = OP_GSHAREDVT_LOCAL;
14412                                 ins->inst_imm = idx;
14413                         } else {
14414                                 /* Arg */
14415                                 cfg->gsharedvt_vreg_to_idx [ins->dreg] = -1;
14416                                 ins->opcode = OP_GSHAREDVT_ARG_REGOFFSET;
14417                         }
14418                 }
14419         }
14420 }
14421
14422 /**
14423  * mono_spill_global_vars:
14424  *
14425  *   Generate spill code for variables which are not allocated to registers,
14426  * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
14427  * code is generated which could be optimized by the local optimization passes.
14428  */
14429 void
14430 mono_spill_global_vars (MonoCompile *cfg, gboolean *need_local_opts)
14431 {
14432         MonoBasicBlock *bb;
14433         char spec2 [16];
14434         int orig_next_vreg;
14435         guint32 *vreg_to_lvreg;
14436         guint32 *lvregs;
14437         guint32 i, lvregs_len;
14438         gboolean dest_has_lvreg = FALSE;
14439         MonoStackType stacktypes [128];
14440         MonoInst **live_range_start, **live_range_end;
14441         MonoBasicBlock **live_range_start_bb, **live_range_end_bb;
14442
14443         *need_local_opts = FALSE;
14444
14445         memset (spec2, 0, sizeof (spec2));
14446
14447         /* FIXME: Move this function to mini.c */
14448         stacktypes ['i'] = STACK_PTR;
14449         stacktypes ['l'] = STACK_I8;
14450         stacktypes ['f'] = STACK_R8;
14451 #ifdef MONO_ARCH_SIMD_INTRINSICS
14452         stacktypes ['x'] = STACK_VTYPE;
14453 #endif
14454
14455 #if SIZEOF_REGISTER == 4
14456         /* Create MonoInsts for longs */
14457         for (i = 0; i < cfg->num_varinfo; i++) {
14458                 MonoInst *ins = cfg->varinfo [i];
14459
14460                 if ((ins->opcode != OP_REGVAR) && !(ins->flags & MONO_INST_IS_DEAD)) {
14461                         switch (ins->type) {
14462                         case STACK_R8:
14463                         case STACK_I8: {
14464                                 MonoInst *tree;
14465
14466                                 if (ins->type == STACK_R8 && !COMPILE_SOFT_FLOAT (cfg))
14467                                         break;
14468
14469                                 g_assert (ins->opcode == OP_REGOFFSET);
14470
14471                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_LS (ins->dreg));
14472                                 g_assert (tree);
14473                                 tree->opcode = OP_REGOFFSET;
14474                                 tree->inst_basereg = ins->inst_basereg;
14475                                 tree->inst_offset = ins->inst_offset + MINI_LS_WORD_OFFSET;
14476
14477                                 tree = get_vreg_to_inst (cfg, MONO_LVREG_MS (ins->dreg));
14478                                 g_assert (tree);
14479                                 tree->opcode = OP_REGOFFSET;
14480                                 tree->inst_basereg = ins->inst_basereg;
14481                                 tree->inst_offset = ins->inst_offset + MINI_MS_WORD_OFFSET;
14482                                 break;
14483                         }
14484                         default:
14485                                 break;
14486                         }
14487                 }
14488         }
14489 #endif
14490
14491         if (cfg->compute_gc_maps) {
14492                 /* registers need liveness info even for !non refs */
14493                 for (i = 0; i < cfg->num_varinfo; i++) {
14494                         MonoInst *ins = cfg->varinfo [i];
14495
14496                         if (ins->opcode == OP_REGVAR)
14497                                 ins->flags |= MONO_INST_GC_TRACK;
14498                 }
14499         }
14500
14501         /* FIXME: widening and truncation */
14502
14503         /*
14504          * As an optimization, when a variable allocated to the stack is first loaded into
14505          * an lvreg, we will remember the lvreg and use it the next time instead of loading
14506          * the variable again.
14507          */
14508         orig_next_vreg = cfg->next_vreg;
14509         vreg_to_lvreg = (guint32 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint32) * cfg->next_vreg);
14510         lvregs = (guint32 *)mono_mempool_alloc (cfg->mempool, sizeof (guint32) * 1024);
14511         lvregs_len = 0;
14512
14513         /*
14514          * These arrays contain the first and last instructions accessing a given
14515          * variable.
14516          * Since we emit bblocks in the same order we process them here, and we
14517          * don't split live ranges, these will precisely describe the live range of
14518          * the variable, i.e. the instruction range where a valid value can be found
14519          * in the variables location.
14520          * The live range is computed using the liveness info computed by the liveness pass.
14521          * We can't use vmv->range, since that is an abstract live range, and we need
14522          * one which is instruction precise.
14523          * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
14524          */
14525         /* FIXME: Only do this if debugging info is requested */
14526         live_range_start = g_new0 (MonoInst*, cfg->next_vreg);
14527         live_range_end = g_new0 (MonoInst*, cfg->next_vreg);
14528         live_range_start_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14529         live_range_end_bb = g_new (MonoBasicBlock*, cfg->next_vreg);
14530
14531         /* Add spill loads/stores */
14532         for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
14533                 MonoInst *ins;
14534
14535                 if (cfg->verbose_level > 2)
14536                         printf ("\nSPILL BLOCK %d:\n", bb->block_num);
14537
14538                 /* Clear vreg_to_lvreg array */
14539                 for (i = 0; i < lvregs_len; i++)
14540                         vreg_to_lvreg [lvregs [i]] = 0;
14541                 lvregs_len = 0;
14542
14543                 cfg->cbb = bb;
14544                 MONO_BB_FOR_EACH_INS (bb, ins) {
14545                         const char *spec = INS_INFO (ins->opcode);
14546                         int regtype, srcindex, sreg, tmp_reg, prev_dreg, num_sregs;
14547                         gboolean store, no_lvreg;
14548                         int sregs [MONO_MAX_SRC_REGS];
14549
14550                         if (G_UNLIKELY (cfg->verbose_level > 2))
14551                                 mono_print_ins (ins);
14552
14553                         if (ins->opcode == OP_NOP)
14554                                 continue;
14555
14556                         /*
14557                          * We handle LDADDR here as well, since it can only be decomposed
14558                          * when variable addresses are known.
14559                          */
14560                         if (ins->opcode == OP_LDADDR) {
14561                                 MonoInst *var = (MonoInst *)ins->inst_p0;
14562
14563                                 if (var->opcode == OP_VTARG_ADDR) {
14564                                         /* Happens on SPARC/S390 where vtypes are passed by reference */
14565                                         MonoInst *vtaddr = var->inst_left;
14566                                         if (vtaddr->opcode == OP_REGVAR) {
14567                                                 ins->opcode = OP_MOVE;
14568                                                 ins->sreg1 = vtaddr->dreg;
14569                                         }
14570                                         else if (var->inst_left->opcode == OP_REGOFFSET) {
14571                                                 ins->opcode = OP_LOAD_MEMBASE;
14572                                                 ins->inst_basereg = vtaddr->inst_basereg;
14573                                                 ins->inst_offset = vtaddr->inst_offset;
14574                                         } else
14575                                                 NOT_IMPLEMENTED;
14576                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg] < 0) {
14577                                         /* gsharedvt arg passed by ref */
14578                                         g_assert (var->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
14579
14580                                         ins->opcode = OP_LOAD_MEMBASE;
14581                                         ins->inst_basereg = var->inst_basereg;
14582                                         ins->inst_offset = var->inst_offset;
14583                                 } else if (cfg->gsharedvt && cfg->gsharedvt_vreg_to_idx [var->dreg]) {
14584                                         MonoInst *load, *load2, *load3;
14585                                         int idx = cfg->gsharedvt_vreg_to_idx [var->dreg] - 1;
14586                                         int reg1, reg2, reg3;
14587                                         MonoInst *info_var = cfg->gsharedvt_info_var;
14588                                         MonoInst *locals_var = cfg->gsharedvt_locals_var;
14589
14590                                         /*
14591                                          * gsharedvt local.
14592                                          * Compute the address of the local as gsharedvt_locals_var + gsharedvt_info_var->locals_offsets [idx].
14593                                          */
14594
14595                                         g_assert (var->opcode == OP_GSHAREDVT_LOCAL);
14596
14597                                         g_assert (info_var);
14598                                         g_assert (locals_var);
14599
14600                                         /* Mark the instruction used to compute the locals var as used */
14601                                         cfg->gsharedvt_locals_var_ins = NULL;
14602
14603                                         /* Load the offset */
14604                                         if (info_var->opcode == OP_REGOFFSET) {
14605                                                 reg1 = alloc_ireg (cfg);
14606                                                 NEW_LOAD_MEMBASE (cfg, load, OP_LOAD_MEMBASE, reg1, info_var->inst_basereg, info_var->inst_offset);
14607                                         } else if (info_var->opcode == OP_REGVAR) {
14608                                                 load = NULL;
14609                                                 reg1 = info_var->dreg;
14610                                         } else {
14611                                                 g_assert_not_reached ();
14612                                         }
14613                                         reg2 = alloc_ireg (cfg);
14614                                         NEW_LOAD_MEMBASE (cfg, load2, OP_LOADI4_MEMBASE, reg2, reg1, MONO_STRUCT_OFFSET (MonoGSharedVtMethodRuntimeInfo, entries) + (idx * sizeof (gpointer)));
14615                                         /* Load the locals area address */
14616                                         reg3 = alloc_ireg (cfg);
14617                                         if (locals_var->opcode == OP_REGOFFSET) {
14618                                                 NEW_LOAD_MEMBASE (cfg, load3, OP_LOAD_MEMBASE, reg3, locals_var->inst_basereg, locals_var->inst_offset);
14619                                         } else if (locals_var->opcode == OP_REGVAR) {
14620                                                 NEW_UNALU (cfg, load3, OP_MOVE, reg3, locals_var->dreg);
14621                                         } else {
14622                                                 g_assert_not_reached ();
14623                                         }
14624                                         /* Compute the address */
14625                                         ins->opcode = OP_PADD;
14626                                         ins->sreg1 = reg3;
14627                                         ins->sreg2 = reg2;
14628
14629                                         mono_bblock_insert_before_ins (bb, ins, load3);
14630                                         mono_bblock_insert_before_ins (bb, load3, load2);
14631                                         if (load)
14632                                                 mono_bblock_insert_before_ins (bb, load2, load);
14633                                 } else {
14634                                         g_assert (var->opcode == OP_REGOFFSET);
14635
14636                                         ins->opcode = OP_ADD_IMM;
14637                                         ins->sreg1 = var->inst_basereg;
14638                                         ins->inst_imm = var->inst_offset;
14639                                 }
14640
14641                                 *need_local_opts = TRUE;
14642                                 spec = INS_INFO (ins->opcode);
14643                         }
14644
14645                         if (ins->opcode < MONO_CEE_LAST) {
14646                                 mono_print_ins (ins);
14647                                 g_assert_not_reached ();
14648                         }
14649
14650                         /*
14651                          * Store opcodes have destbasereg in the dreg, but in reality, it is an
14652                          * src register.
14653                          * FIXME:
14654                          */
14655                         if (MONO_IS_STORE_MEMBASE (ins)) {
14656                                 tmp_reg = ins->dreg;
14657                                 ins->dreg = ins->sreg2;
14658                                 ins->sreg2 = tmp_reg;
14659                                 store = TRUE;
14660
14661                                 spec2 [MONO_INST_DEST] = ' ';
14662                                 spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14663                                 spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14664                                 spec2 [MONO_INST_SRC3] = ' ';
14665                                 spec = spec2;
14666                         } else if (MONO_IS_STORE_MEMINDEX (ins))
14667                                 g_assert_not_reached ();
14668                         else
14669                                 store = FALSE;
14670                         no_lvreg = FALSE;
14671
14672                         if (G_UNLIKELY (cfg->verbose_level > 2)) {
14673                                 printf ("\t %.3s %d", spec, ins->dreg);
14674                                 num_sregs = mono_inst_get_src_registers (ins, sregs);
14675                                 for (srcindex = 0; srcindex < num_sregs; ++srcindex)
14676                                         printf (" %d", sregs [srcindex]);
14677                                 printf ("\n");
14678                         }
14679
14680                         /***************/
14681                         /*    DREG     */
14682                         /***************/
14683                         regtype = spec [MONO_INST_DEST];
14684                         g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
14685                         prev_dreg = -1;
14686
14687                         if ((ins->dreg != -1) && get_vreg_to_inst (cfg, ins->dreg)) {
14688                                 MonoInst *var = get_vreg_to_inst (cfg, ins->dreg);
14689                                 MonoInst *store_ins;
14690                                 int store_opcode;
14691                                 MonoInst *def_ins = ins;
14692                                 int dreg = ins->dreg; /* The original vreg */
14693
14694                                 store_opcode = mono_type_to_store_membase (cfg, var->inst_vtype);
14695
14696                                 if (var->opcode == OP_REGVAR) {
14697                                         ins->dreg = var->dreg;
14698                                 } 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)) {
14699                                         /*
14700                                          * Instead of emitting a load+store, use a _membase opcode.
14701                                          */
14702                                         g_assert (var->opcode == OP_REGOFFSET);
14703                                         if (ins->opcode == OP_MOVE) {
14704                                                 NULLIFY_INS (ins);
14705                                                 def_ins = NULL;
14706                                         } else {
14707                                                 ins->opcode = op_to_op_dest_membase (store_opcode, ins->opcode);
14708                                                 ins->inst_basereg = var->inst_basereg;
14709                                                 ins->inst_offset = var->inst_offset;
14710                                                 ins->dreg = -1;
14711                                         }
14712                                         spec = INS_INFO (ins->opcode);
14713                                 } else {
14714                                         guint32 lvreg;
14715
14716                                         g_assert (var->opcode == OP_REGOFFSET);
14717
14718                                         prev_dreg = ins->dreg;
14719
14720                                         /* Invalidate any previous lvreg for this vreg */
14721                                         vreg_to_lvreg [ins->dreg] = 0;
14722
14723                                         lvreg = 0;
14724
14725                                         if (COMPILE_SOFT_FLOAT (cfg) && store_opcode == OP_STORER8_MEMBASE_REG) {
14726                                                 regtype = 'l';
14727                                                 store_opcode = OP_STOREI8_MEMBASE_REG;
14728                                         }
14729
14730                                         ins->dreg = alloc_dreg (cfg, stacktypes [regtype]);
14731
14732 #if SIZEOF_REGISTER != 8
14733                                         if (regtype == 'l') {
14734                                                 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));
14735                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14736                                                 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));
14737                                                 mono_bblock_insert_after_ins (bb, ins, store_ins);
14738                                                 def_ins = store_ins;
14739                                         }
14740                                         else
14741 #endif
14742                                         {
14743                                                 g_assert (store_opcode != OP_STOREV_MEMBASE);
14744
14745                                                 /* Try to fuse the store into the instruction itself */
14746                                                 /* FIXME: Add more instructions */
14747                                                 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
14748                                                         ins->opcode = store_membase_reg_to_store_membase_imm (store_opcode);
14749                                                         ins->inst_imm = ins->inst_c0;
14750                                                         ins->inst_destbasereg = var->inst_basereg;
14751                                                         ins->inst_offset = var->inst_offset;
14752                                                         spec = INS_INFO (ins->opcode);
14753                                                 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE) || (ins->opcode == OP_RMOVE))) {
14754                                                         ins->opcode = store_opcode;
14755                                                         ins->inst_destbasereg = var->inst_basereg;
14756                                                         ins->inst_offset = var->inst_offset;
14757
14758                                                         no_lvreg = TRUE;
14759
14760                                                         tmp_reg = ins->dreg;
14761                                                         ins->dreg = ins->sreg2;
14762                                                         ins->sreg2 = tmp_reg;
14763                                                         store = TRUE;
14764
14765                                                         spec2 [MONO_INST_DEST] = ' ';
14766                                                         spec2 [MONO_INST_SRC1] = spec [MONO_INST_SRC1];
14767                                                         spec2 [MONO_INST_SRC2] = spec [MONO_INST_DEST];
14768                                                         spec2 [MONO_INST_SRC3] = ' ';
14769                                                         spec = spec2;
14770                                                 } else if (!lvreg && (op_to_op_store_membase (store_opcode, ins->opcode) != -1)) {
14771                                                         // FIXME: The backends expect the base reg to be in inst_basereg
14772                                                         ins->opcode = op_to_op_store_membase (store_opcode, ins->opcode);
14773                                                         ins->dreg = -1;
14774                                                         ins->inst_basereg = var->inst_basereg;
14775                                                         ins->inst_offset = var->inst_offset;
14776                                                         spec = INS_INFO (ins->opcode);
14777                                                 } else {
14778                                                         /* printf ("INS: "); mono_print_ins (ins); */
14779                                                         /* Create a store instruction */
14780                                                         NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
14781
14782                                                         /* Insert it after the instruction */
14783                                                         mono_bblock_insert_after_ins (bb, ins, store_ins);
14784
14785                                                         def_ins = store_ins;
14786
14787                                                         /*
14788                                                          * We can't assign ins->dreg to var->dreg here, since the
14789                                                          * sregs could use it. So set a flag, and do it after
14790                                                          * the sregs.
14791                                                          */
14792                                                         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)))
14793                                                                 dest_has_lvreg = TRUE;
14794                                                 }
14795                                         }
14796                                 }
14797
14798                                 if (def_ins && !live_range_start [dreg]) {
14799                                         live_range_start [dreg] = def_ins;
14800                                         live_range_start_bb [dreg] = bb;
14801                                 }
14802
14803                                 if (cfg->compute_gc_maps && def_ins && (var->flags & MONO_INST_GC_TRACK)) {
14804                                         MonoInst *tmp;
14805
14806                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_DEF);
14807                                         tmp->inst_c1 = dreg;
14808                                         mono_bblock_insert_after_ins (bb, def_ins, tmp);
14809                                 }
14810                         }
14811
14812                         /************/
14813                         /*  SREGS   */
14814                         /************/
14815                         num_sregs = mono_inst_get_src_registers (ins, sregs);
14816                         for (srcindex = 0; srcindex < 3; ++srcindex) {
14817                                 regtype = spec [MONO_INST_SRC1 + srcindex];
14818                                 sreg = sregs [srcindex];
14819
14820                                 g_assert (((sreg == -1) && (regtype == ' ')) || ((sreg != -1) && (regtype != ' ')));
14821                                 if ((sreg != -1) && get_vreg_to_inst (cfg, sreg)) {
14822                                         MonoInst *var = get_vreg_to_inst (cfg, sreg);
14823                                         MonoInst *use_ins = ins;
14824                                         MonoInst *load_ins;
14825                                         guint32 load_opcode;
14826
14827                                         if (var->opcode == OP_REGVAR) {
14828                                                 sregs [srcindex] = var->dreg;
14829                                                 //mono_inst_set_src_registers (ins, sregs);
14830                                                 live_range_end [sreg] = use_ins;
14831                                                 live_range_end_bb [sreg] = bb;
14832
14833                                                 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14834                                                         MonoInst *tmp;
14835
14836                                                         MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14837                                                         /* var->dreg is a hreg */
14838                                                         tmp->inst_c1 = sreg;
14839                                                         mono_bblock_insert_after_ins (bb, ins, tmp);
14840                                                 }
14841
14842                                                 continue;
14843                                         }
14844
14845                                         g_assert (var->opcode == OP_REGOFFSET);
14846
14847                                         load_opcode = mono_type_to_load_membase (cfg, var->inst_vtype);
14848
14849                                         g_assert (load_opcode != OP_LOADV_MEMBASE);
14850
14851                                         if (vreg_to_lvreg [sreg]) {
14852                                                 g_assert (vreg_to_lvreg [sreg] != -1);
14853
14854                                                 /* The variable is already loaded to an lvreg */
14855                                                 if (G_UNLIKELY (cfg->verbose_level > 2))
14856                                                         printf ("\t\tUse lvreg R%d for R%d.\n", vreg_to_lvreg [sreg], sreg);
14857                                                 sregs [srcindex] = vreg_to_lvreg [sreg];
14858                                                 //mono_inst_set_src_registers (ins, sregs);
14859                                                 continue;
14860                                         }
14861
14862                                         /* Try to fuse the load into the instruction */
14863                                         if ((srcindex == 0) && (op_to_op_src1_membase (cfg, load_opcode, ins->opcode) != -1)) {
14864                                                 ins->opcode = op_to_op_src1_membase (cfg, load_opcode, ins->opcode);
14865                                                 sregs [0] = var->inst_basereg;
14866                                                 //mono_inst_set_src_registers (ins, sregs);
14867                                                 ins->inst_offset = var->inst_offset;
14868                                         } else if ((srcindex == 1) && (op_to_op_src2_membase (cfg, load_opcode, ins->opcode) != -1)) {
14869                                                 ins->opcode = op_to_op_src2_membase (cfg, load_opcode, ins->opcode);
14870                                                 sregs [1] = var->inst_basereg;
14871                                                 //mono_inst_set_src_registers (ins, sregs);
14872                                                 ins->inst_offset = var->inst_offset;
14873                                         } else {
14874                                                 if (MONO_IS_REAL_MOVE (ins)) {
14875                                                         ins->opcode = OP_NOP;
14876                                                         sreg = ins->dreg;
14877                                                 } else {
14878                                                         //printf ("%d ", srcindex); mono_print_ins (ins);
14879
14880                                                         sreg = alloc_dreg (cfg, stacktypes [regtype]);
14881
14882                                                         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) {
14883                                                                 if (var->dreg == prev_dreg) {
14884                                                                         /*
14885                                                                          * sreg refers to the value loaded by the load
14886                                                                          * emitted below, but we need to use ins->dreg
14887                                                                          * since it refers to the store emitted earlier.
14888                                                                          */
14889                                                                         sreg = ins->dreg;
14890                                                                 }
14891                                                                 g_assert (sreg != -1);
14892                                                                 vreg_to_lvreg [var->dreg] = sreg;
14893                                                                 g_assert (lvregs_len < 1024);
14894                                                                 lvregs [lvregs_len ++] = var->dreg;
14895                                                         }
14896                                                 }
14897
14898                                                 sregs [srcindex] = sreg;
14899                                                 //mono_inst_set_src_registers (ins, sregs);
14900
14901 #if SIZEOF_REGISTER != 8
14902                                                 if (regtype == 'l') {
14903                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_MS (sreg), var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
14904                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14905                                                         NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, MONO_LVREG_LS (sreg), var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
14906                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14907                                                         use_ins = load_ins;
14908                                                 }
14909                                                 else
14910 #endif
14911                                                 {
14912 #if SIZEOF_REGISTER == 4
14913                                                         g_assert (load_opcode != OP_LOADI8_MEMBASE);
14914 #endif
14915                                                         NEW_LOAD_MEMBASE (cfg, load_ins, load_opcode, sreg, var->inst_basereg, var->inst_offset);
14916                                                         mono_bblock_insert_before_ins (bb, ins, load_ins);
14917                                                         use_ins = load_ins;
14918                                                 }
14919                                         }
14920
14921                                         if (var->dreg < orig_next_vreg) {
14922                                                 live_range_end [var->dreg] = use_ins;
14923                                                 live_range_end_bb [var->dreg] = bb;
14924                                         }
14925
14926                                         if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
14927                                                 MonoInst *tmp;
14928
14929                                                 MONO_INST_NEW (cfg, tmp, OP_GC_LIVENESS_USE);
14930                                                 tmp->inst_c1 = var->dreg;
14931                                                 mono_bblock_insert_after_ins (bb, ins, tmp);
14932                                         }
14933                                 }
14934                         }
14935                         mono_inst_set_src_registers (ins, sregs);
14936
14937                         if (dest_has_lvreg) {
14938                                 g_assert (ins->dreg != -1);
14939                                 vreg_to_lvreg [prev_dreg] = ins->dreg;
14940                                 g_assert (lvregs_len < 1024);
14941                                 lvregs [lvregs_len ++] = prev_dreg;
14942                                 dest_has_lvreg = FALSE;
14943                         }
14944
14945                         if (store) {
14946                                 tmp_reg = ins->dreg;
14947                                 ins->dreg = ins->sreg2;
14948                                 ins->sreg2 = tmp_reg;
14949                         }
14950
14951                         if (MONO_IS_CALL (ins)) {
14952                                 /* Clear vreg_to_lvreg array */
14953                                 for (i = 0; i < lvregs_len; i++)
14954                                         vreg_to_lvreg [lvregs [i]] = 0;
14955                                 lvregs_len = 0;
14956                         } else if (ins->opcode == OP_NOP) {
14957                                 ins->dreg = -1;
14958                                 MONO_INST_NULLIFY_SREGS (ins);
14959                         }
14960
14961                         if (cfg->verbose_level > 2)
14962                                 mono_print_ins_index (1, ins);
14963                 }
14964
14965                 /* Extend the live range based on the liveness info */
14966                 if (cfg->compute_precise_live_ranges && bb->live_out_set && bb->code) {
14967                         for (i = 0; i < cfg->num_varinfo; i ++) {
14968                                 MonoMethodVar *vi = MONO_VARINFO (cfg, i);
14969
14970                                 if (vreg_is_volatile (cfg, vi->vreg))
14971                                         /* The liveness info is incomplete */
14972                                         continue;
14973
14974                                 if (mono_bitset_test_fast (bb->live_in_set, i) && !live_range_start [vi->vreg]) {
14975                                         /* Live from at least the first ins of this bb */
14976                                         live_range_start [vi->vreg] = bb->code;
14977                                         live_range_start_bb [vi->vreg] = bb;
14978                                 }
14979
14980                                 if (mono_bitset_test_fast (bb->live_out_set, i)) {
14981                                         /* Live at least until the last ins of this bb */
14982                                         live_range_end [vi->vreg] = bb->last_ins;
14983                                         live_range_end_bb [vi->vreg] = bb;
14984                                 }
14985                         }
14986                 }
14987         }
14988
14989         /*
14990          * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
14991          * by storing the current native offset into MonoMethodVar->live_range_start/end.
14992          */
14993         if (cfg->backend->have_liverange_ops && cfg->compute_precise_live_ranges && cfg->comp_done & MONO_COMP_LIVENESS) {
14994                 for (i = 0; i < cfg->num_varinfo; ++i) {
14995                         int vreg = MONO_VARINFO (cfg, i)->vreg;
14996                         MonoInst *ins;
14997
14998                         if (live_range_start [vreg]) {
14999                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_START);
15000                                 ins->inst_c0 = i;
15001                                 ins->inst_c1 = vreg;
15002                                 mono_bblock_insert_after_ins (live_range_start_bb [vreg], live_range_start [vreg], ins);
15003                         }
15004                         if (live_range_end [vreg]) {
15005                                 MONO_INST_NEW (cfg, ins, OP_LIVERANGE_END);
15006                                 ins->inst_c0 = i;
15007                                 ins->inst_c1 = vreg;
15008                                 if (live_range_end [vreg] == live_range_end_bb [vreg]->last_ins)
15009                                         mono_add_ins_to_end (live_range_end_bb [vreg], ins);
15010                                 else
15011                                         mono_bblock_insert_after_ins (live_range_end_bb [vreg], live_range_end [vreg], ins);
15012                         }
15013                 }
15014         }
15015
15016         if (cfg->gsharedvt_locals_var_ins) {
15017                 /* Nullify if unused */
15018                 cfg->gsharedvt_locals_var_ins->opcode = OP_PCONST;
15019                 cfg->gsharedvt_locals_var_ins->inst_imm = 0;
15020         }
15021
15022         g_free (live_range_start);
15023         g_free (live_range_end);
15024         g_free (live_range_start_bb);
15025         g_free (live_range_end_bb);
15026 }
15027
15028 /**
15029  * FIXME:
15030  * - use 'iadd' instead of 'int_add'
15031  * - handling ovf opcodes: decompose in method_to_ir.
15032  * - unify iregs/fregs
15033  *   -> partly done, the missing parts are:
15034  *   - a more complete unification would involve unifying the hregs as well, so
15035  *     code wouldn't need if (fp) all over the place. but that would mean the hregs
15036  *     would no longer map to the machine hregs, so the code generators would need to
15037  *     be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
15038  *     wouldn't work any more. Duplicating the code in mono_local_regalloc () into
15039  *     fp/non-fp branches speeds it up by about 15%.
15040  * - use sext/zext opcodes instead of shifts
15041  * - add OP_ICALL
15042  * - get rid of TEMPLOADs if possible and use vregs instead
15043  * - clean up usage of OP_P/OP_ opcodes
15044  * - cleanup usage of DUMMY_USE
15045  * - cleanup the setting of ins->type for MonoInst's which are pushed on the
15046  *   stack
15047  * - set the stack type and allocate a dreg in the EMIT_NEW macros
15048  * - get rid of all the <foo>2 stuff when the new JIT is ready.
15049  * - make sure handle_stack_args () is called before the branch is emitted
15050  * - when the new IR is done, get rid of all unused stuff
15051  * - COMPARE/BEQ as separate instructions or unify them ?
15052  *   - keeping them separate allows specialized compare instructions like
15053  *     compare_imm, compare_membase
15054  *   - most back ends unify fp compare+branch, fp compare+ceq
15055  * - integrate mono_save_args into inline_method
15056  * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
15057  * - handle long shift opts on 32 bit platforms somehow: they require
15058  *   3 sregs (2 for arg1 and 1 for arg2)
15059  * - make byref a 'normal' type.
15060  * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
15061  *   variable if needed.
15062  * - do not start a new IL level bblock when cfg->cbb is changed by a function call
15063  *   like inline_method.
15064  * - remove inlining restrictions
15065  * - fix LNEG and enable cfold of INEG
15066  * - generalize x86 optimizations like ldelema as a peephole optimization
15067  * - add store_mem_imm for amd64
15068  * - optimize the loading of the interruption flag in the managed->native wrappers
15069  * - avoid special handling of OP_NOP in passes
15070  * - move code inserting instructions into one function/macro.
15071  * - try a coalescing phase after liveness analysis
15072  * - add float -> vreg conversion + local optimizations on !x86
15073  * - figure out how to handle decomposed branches during optimizations, ie.
15074  *   compare+branch, op_jump_table+op_br etc.
15075  * - promote RuntimeXHandles to vregs
15076  * - vtype cleanups:
15077  *   - add a NEW_VARLOADA_VREG macro
15078  * - the vtype optimizations are blocked by the LDADDR opcodes generated for
15079  *   accessing vtype fields.
15080  * - get rid of I8CONST on 64 bit platforms
15081  * - dealing with the increase in code size due to branches created during opcode
15082  *   decomposition:
15083  *   - use extended basic blocks
15084  *     - all parts of the JIT
15085  *     - handle_global_vregs () && local regalloc
15086  *   - avoid introducing global vregs during decomposition, like 'vtable' in isinst
15087  * - sources of increase in code size:
15088  *   - vtypes
15089  *   - long compares
15090  *   - isinst and castclass
15091  *   - lvregs not allocated to global registers even if used multiple times
15092  * - call cctors outside the JIT, to make -v output more readable and JIT timings more
15093  *   meaningful.
15094  * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
15095  * - add all micro optimizations from the old JIT
15096  * - put tree optimizations into the deadce pass
15097  * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
15098  *   specific function.
15099  * - unify the float comparison opcodes with the other comparison opcodes, i.e.
15100  *   fcompare + branchCC.
15101  * - create a helper function for allocating a stack slot, taking into account
15102  *   MONO_CFG_HAS_SPILLUP.
15103  * - merge r68207.
15104  * - merge the ia64 switch changes.
15105  * - optimize mono_regstate2_alloc_int/float.
15106  * - fix the pessimistic handling of variables accessed in exception handler blocks.
15107  * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
15108  *   parts of the tree could be separated by other instructions, killing the tree
15109  *   arguments, or stores killing loads etc. Also, should we fold loads into other
15110  *   instructions if the result of the load is used multiple times ?
15111  * - make the REM_IMM optimization in mini-x86.c arch-independent.
15112  * - LAST MERGE: 108395.
15113  * - when returning vtypes in registers, generate IR and append it to the end of the
15114  *   last bb instead of doing it in the epilog.
15115  * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
15116  */
15117
15118 /*
15119
15120 NOTES
15121 -----
15122
15123 - When to decompose opcodes:
15124   - earlier: this makes some optimizations hard to implement, since the low level IR
15125   no longer contains the neccessary information. But it is easier to do.
15126   - later: harder to implement, enables more optimizations.
15127 - Branches inside bblocks:
15128   - created when decomposing complex opcodes.
15129     - branches to another bblock: harmless, but not tracked by the branch
15130       optimizations, so need to branch to a label at the start of the bblock.
15131     - branches to inside the same bblock: very problematic, trips up the local
15132       reg allocator. Can be fixed by spitting the current bblock, but that is a
15133       complex operation, since some local vregs can become global vregs etc.
15134 - Local/global vregs:
15135   - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
15136     local register allocator.
15137   - global vregs: used in more than one bblock. Have an associated MonoMethodVar
15138     structure, created by mono_create_var (). Assigned to hregs or the stack by
15139     the global register allocator.
15140 - When to do optimizations like alu->alu_imm:
15141   - earlier -> saves work later on since the IR will be smaller/simpler
15142   - later -> can work on more instructions
15143 - Handling of valuetypes:
15144   - When a vtype is pushed on the stack, a new temporary is created, an
15145     instruction computing its address (LDADDR) is emitted and pushed on
15146     the stack. Need to optimize cases when the vtype is used immediately as in
15147     argument passing, stloc etc.
15148 - Instead of the to_end stuff in the old JIT, simply call the function handling
15149   the values on the stack before emitting the last instruction of the bb.
15150 */
15151
15152 #endif /* DISABLE_JIT */